piperidines has been researched along with Kidney-Failure--Chronic* in 42 studies
5 review(s) available for piperidines and Kidney-Failure--Chronic
Article | Year |
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An evaluation of difelikefalin as a treatment option for moderate-to-severe pruritus in end stage renal disease.
Topics: Europe; Humans; Kidney Failure, Chronic; Piperidines; Pruritus; Renal Dialysis | 2021 |
Middle East Respiratory Syndrome (MERS) is a novel respiratory illness firstly reported in Saudi Arabia in 2012. It is caused by a new corona virus, called MERS corona virus (MERS-CoV). Most people who have MERS-CoV infection developed severe acute respiratory illness.. This work is done to determine the clinical characteristics and the outcome of intensive care unit (ICU) admitted patients with confirmed MERS-CoV infection.. This study included 32 laboratory confirmed MERS corona virus infected patients who were admitted into ICU. It included 20 (62.50%) males and 12 (37.50%) females. The mean age was 43.99 ± 13.03 years. Diagnosis was done by real-time reverse transcription polymerase chain reaction (rRT-PCR) test for corona virus on throat swab, sputum, tracheal aspirate, or bronchoalveolar lavage specimens. Clinical characteristics, co-morbidities and outcome were reported for all subjects.. Most MERS corona patients present with fever, cough, dyspnea, sore throat, runny nose and sputum. The presence of abdominal symptoms may indicate bad prognosis. Prolonged duration of symptoms before patients' hospitalization, prolonged duration of mechanical ventilation and hospital stay, bilateral radiological pulmonary infiltrates, and hypoxemic respiratory failure were found to be strong predictors of mortality in such patients. Also, old age, current smoking, smoking severity, presence of associated co-morbidities like obesity, diabetes mellitus, chronic heart diseases, COPD, malignancy, renal failure, renal transplantation and liver cirrhosis are associated with a poor outcome of ICU admitted MERS corona virus infected patients.. Plasma HO-1, ferritin, p21, and NQO1 were all elevated at baseline in CKD participants. Plasma HO-1 and urine NQO1 levels each inversely correlated with eGFR (. SnPP can be safely administered and, after its injection, the resulting changes in plasma HO-1, NQO1, ferritin, and p21 concentrations can provide information as to antioxidant gene responsiveness/reserves in subjects with and without kidney disease.. A Study with RBT-1, in Healthy Volunteers and Subjects with Stage 3-4 Chronic Kidney Disease, NCT0363002 and NCT03893799.. HFNC did not significantly modify work of breathing in healthy subjects. However, a significant reduction in the minute volume was achieved, capillary [Formula: see text] remaining constant, which suggests a reduction in dead-space ventilation with flows > 20 L/min. (ClinicalTrials.gov registration NCT02495675).. 3 组患者手术时间、术中显性失血量及术后 1 周血红蛋白下降量比较差异均无统计学意义(. 对于肥胖和超重的膝关节单间室骨关节炎患者,采用 UKA 术后可获满意短中期疗效,远期疗效尚需进一步随访观察。.. Decreased muscle strength was identified at both time points in patients with hEDS/HSD. The evolution of most muscle strength parameters over time did not significantly differ between groups. Future studies should focus on the effectiveness of different types of muscle training strategies in hEDS/HSD patients.. These findings support previous adverse findings of e-cigarette exposure on neurodevelopment in a mouse model and provide substantial evidence of persistent adverse behavioral and neuroimmunological consequences to adult offspring following maternal e-cigarette exposure during pregnancy. https://doi.org/10.1289/EHP6067.. This RCT directly compares a neoadjuvant chemotherapy regimen with a standard CROSS regimen in terms of overall survival for patients with locally advanced ESCC. The results of this RCT will provide an answer for the controversy regarding the survival benefits between the two treatment strategies.. NCT04138212, date of registration: October 24, 2019.. Results of current investigation indicated that milk type and post fermentation cooling patterns had a pronounced effect on antioxidant characteristics, fatty acid profile, lipid oxidation and textural characteristics of yoghurt. Buffalo milk based yoghurt had more fat, protein, higher antioxidant capacity and vitamin content. Antioxidant and sensory characteristics of T. If milk is exposed to excessive amounts of light, Vitamins B. The two concentration of ZnO nanoparticles in the ambient air produced two different outcomes. The lower concentration resulted in significant increases in Zn content of the liver while the higher concentration significantly increased Zn in the lungs (p < 0.05). Additionally, at the lower concentration, Zn content was found to be lower in brain tissue (p < 0.05). Using TEM/EDX we detected ZnO nanoparticles inside the cells in the lungs, kidney and liver. Inhaling ZnO NP at the higher concentration increased the levels of mRNA of the following genes in the lungs: Mt2 (2.56 fold), Slc30a1 (1.52 fold) and Slc30a5 (2.34 fold). At the lower ZnO nanoparticle concentration, only Slc30a7 mRNA levels in the lungs were up (1.74 fold). Thus the two air concentrations of ZnO nanoparticles produced distinct effects on the expression of the Zn-homeostasis related genes.. Until adverse health effects of ZnO nanoparticles deposited in organs such as lungs are further investigated and/or ruled out, the exposure to ZnO nanoparticles in aerosols should be avoided or minimised. Topics: A549 Cells; Acetylmuramyl-Alanyl-Isoglutamine; Acinetobacter baumannii; Acute Lung Injury; Adaptor Proteins, Signal Transducing; Adenine; Adenocarcinoma; Adipogenesis; Administration, Cutaneous; Administration, Ophthalmic; Adolescent; Adsorption; Adult; Aeromonas hydrophila; Aerosols; Aged; Aged, 80 and over; Aging; Agriculture; Air Pollutants; Air Pollution; Airway Remodeling; Alanine Transaminase; Albuminuria; Aldehyde Dehydrogenase 1 Family; Algorithms; AlkB Homolog 2, Alpha-Ketoglutarate-Dependent Dioxygenase; Alzheimer Disease; Amino Acid Sequence; Ammonia; Ammonium Compounds; Anaerobiosis; Anesthetics, Dissociative; Anesthetics, Inhalation; Animals; Anti-Bacterial Agents; Anti-HIV Agents; Anti-Infective Agents; Anti-Inflammatory Agents; Antibiotics, Antineoplastic; Antibodies, Antineutrophil Cytoplasmic; Antibodies, Monoclonal, Humanized; Antifungal Agents; Antigens, Bacterial; Antigens, CD; Antigens, Differentiation, Myelomonocytic; Antimetabolites, Antineoplastic; Antineoplastic Agents; Antineoplastic Combined Chemotherapy Protocols; Antioxidants; Antitubercular Agents; Antiviral Agents; Apolipoproteins E; Apoptosis; Arabidopsis; Arabidopsis Proteins; Arsenic; Arthritis, Rheumatoid; Asthma; Atherosclerosis; ATP-Dependent Proteases; Attitude of Health Personnel; Australia; Austria; Autophagy; Axitinib; Bacteria; Bacterial Outer Membrane Proteins; Bacterial Proteins; Bacterial Toxins; Bacterial Typing Techniques; Bariatric Surgery; Base Composition; Bayes Theorem; Benzoxazoles; Benzylamines; beta Catenin; Betacoronavirus; Betula; Binding Sites; Biological Availability; Biological Oxygen Demand Analysis; Biomarkers; Biomarkers, Tumor; Biopsy; Bioreactors; Biosensing Techniques; Birth Weight; Blindness; Blood Chemical Analysis; Blood Gas Analysis; Blood Glucose; Blood Pressure; Blood Pressure Monitoring, Ambulatory; Blood-Brain Barrier; Blotting, Western; Body Mass Index; Body Weight; Bone and Bones; Bone Density; Bone Resorption; Borates; Brain; Brain Infarction; Brain Injuries, Traumatic; Brain Neoplasms; Breakfast; Breast Milk Expression; Breast Neoplasms; Bronchi; Bronchoalveolar Lavage Fluid; Buffaloes; Cadherins; Calcification, Physiologic; Calcium Compounds; Calcium, Dietary; Cannula; Caprolactam; Carbon; Carbon Dioxide; Carboplatin; Carcinogenesis; Carcinoma, Ductal; Carcinoma, Ehrlich Tumor; Carcinoma, Hepatocellular; Carcinoma, Non-Small-Cell Lung; Carcinoma, Pancreatic Ductal; Carcinoma, Renal Cell; Cardiovascular Diseases; Carps; Carrageenan; Case-Control Studies; Catalysis; Catalytic Domain; Cattle; CD8-Positive T-Lymphocytes; Cell Adhesion; Cell Cycle Proteins; Cell Death; Cell Differentiation; Cell Line; Cell Line, Tumor; Cell Movement; Cell Nucleus; Cell Phone Use; Cell Proliferation; Cell Survival; Cell Transformation, Neoplastic; Cell Transformation, Viral; Cells, Cultured; Cellulose; Chemical Phenomena; Chemoradiotherapy; Child; Child Development; Child, Preschool; China; Chitosan; Chlorocebus aethiops; Cholecalciferol; Chromatography, Liquid; Circadian Clocks; 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Proto-Oncogene Proteins c-ret; Proto-Oncogene Proteins p21(ras); Proton Pumps; Protons; Protoporphyrins; Pseudomonas aeruginosa; Pseudomonas fluorescens; Pulmonary Artery; Pulmonary Disease, Chronic Obstructive; Pulmonary Gas Exchange; Pulmonary Veins; Pyrazoles; Pyridines; Pyrimidines; Qualitative Research; Quinoxalines; Rabbits; Random Allocation; Rats; Rats, Sprague-Dawley; Rats, Wistar; Receptors, Histamine H3; Receptors, Immunologic; Receptors, Transferrin; Recombinant Proteins; Recurrence; Reference Values; Referral and Consultation; Regional Blood Flow; Registries; Regulon; Renal Insufficiency, Chronic; Reperfusion Injury; Repressor Proteins; Reproducibility of Results; Republic of Korea; Research Design; Resistance Training; Respiration, Artificial; Respiratory Distress Syndrome; Respiratory Insufficiency; Resuscitation; Retinal Dehydrogenase; Retreatment; Retrospective Studies; Reverse Transcriptase Inhibitors; Rhinitis, Allergic; Ribosomal Proteins; Ribosomes; Risk Assessment; 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STAT3 Transcription Factor; Streptomyces coelicolor; Stress, Psychological; Stroke; Stroke Volume; Structure-Activity Relationship; Students, Medical; Students, Pharmacy; Substance Abuse Treatment Centers; Sulfur Dioxide; Surface Properties; Surface-Active Agents; Surveys and Questionnaires; Survival Analysis; Survival Rate; Survivin; Sweden; Swine; Swine, Miniature; Sympathetic Nervous System; T-Lymphocytes, Regulatory; Talaromyces; Tandem Mass Spectrometry; tau Proteins; Telemedicine; Telomerase; Telomere; Telomere Homeostasis; Temperature; Terminally Ill; Th1 Cells; Thiamethoxam; Thiazoles; Thiophenes; Thioredoxin Reductase 1; Thrombosis; Thulium; Thyroid Cancer, Papillary; Thyroid Carcinoma, Anaplastic; Thyroid Neoplasms; Time Factors; Titanium; Tomography, Emission-Computed, Single-Photon; Tomography, X-Ray Computed; TOR Serine-Threonine Kinases; Transcription Factor AP-1; Transcription Factors; Transcription, Genetic; Transcriptional Activation; Transcriptome; Transforming Growth Factor beta1; Transistors, Electronic; Translational Research, Biomedical; Transplantation Tolerance; Transplantation, Homologous; Transportation; Treatment Outcome; Tretinoin; Tuberculosis, Multidrug-Resistant; Tuberculosis, Pulmonary; Tubulin Modulators; Tumor Microenvironment; Tumor Necrosis Factor Inhibitors; Tumor Necrosis Factor-alpha; Twins; Ultrasonic Therapy; Ultrasonography; Ultraviolet Rays; United States; Up-Regulation; Uranium; Urethra; Urinary Bladder; Urodynamics; Uromodulin; Uveitis; Vasoconstrictor Agents; Ventricular Function, Left; Vero Cells; Vesicular Transport Proteins; Viral Nonstructural Proteins; Visual Acuity; Vital Capacity; Vitamin D; Vitamin D Deficiency; Vitamin K 2; Vitamins; Volatilization; Voriconazole; Waiting Lists; Waste Disposal, Fluid; Wastewater; Water Pollutants, Chemical; Whole Genome Sequencing; Wine; Wnt Signaling Pathway; Wound Healing; Wounds and Injuries; WW Domains; X-linked Nuclear Protein; X-Ray Diffraction; Xanthines; Xenograft Model Antitumor Assays; YAP-Signaling Proteins; Yogurt; Young Adult; Zebrafish; Zebrafish Proteins; Ziziphus | 2016 |
Pharmacokinetics of histamine (H2)-receptor antagonists, including roxatidine, in chronic renal failure.
In this paper the effects of chronic renal failure on the pharmacokinetics of H2-antagonists are reviewed and the results obtained with roxatidine presented. In normal renal function renal clearance is around 60-80% of total plasma clearance of all H2-antagonists. Consequently, prolongation of serum half-life, mainly due to a decrease in urinary excretion, is noted in patients with decreasing glomerular filtration rate. In chronic renal failure, a dose reduction is therefore necessary with all H2-antagonists, including roxatidine. It appears that neither haemodialysis nor peritoneal dialysis substantially influences the pharmacokinetics of these drugs. Therefore, the same dosage schedule as in uraemia may be applied in patients with dialysis. Finally, in the elderly the dosage of all H2-antagonists should be adapted to the expected decrease in renal function. Topics: Anti-Ulcer Agents; Cimetidine; Famotidine; Histamine H2 Antagonists; Humans; Kidney Failure, Chronic; Piperidines; Ranitidine; Renal Dialysis; Thiazoles | 1988 |
Metabolism of flecainide.
After oral administration in healthy human subjects, flecainide absorption is prompt (average peak level at 3 to 4 hours) and nearly complete (at least 90%); flecainide does not appear to undergo consequential presystemic biotransformation. Oral absorption in patients with cardiac arrhythmias, renal disease and congestive heart failure (CHF) is also good. Plasma levels of flecainide are proportional to dose within the therapeutic range. Neither food nor antacid affect the extent of flecainide absorption. In healthy subjects, the plasma half-life of unchanged flecainide is relatively long (mean 13 hours after single doses and 16 hours after multiple dosage). For patients with ventricular premature complexes, the half-life is longer (mean 20 hours), and twice-daily oral dosage is effective. The rate of flecainide elimination from plasma may possibly be reduced in older patients. Overall, the plasma pharmacokinetics of flecainide appear to be reasonably linear (not dose- or concentration-dependent). In humans, most (mean 86%) of a single oral dose is excreted in urine as flecainide and its metabolites; only a small portion (mean 5%) is found in feces. Thus, flecainide does not appear to undergo extensive biliary excretion. A substantial portion (mean 27%) of a dose is excreted in urine as unchanged flecainide. Under alkaline urinary conditions, flecainide elimination may be decreased. Only 2 major and 2 or 3 minor metabolites are found in human urine. The 2 major urinary metabolites possess little or no detectable antiarrhythmic activity and are also the major metabolites present in human plasma (primarily conjugated); since free metabolite levels are very low in plasma, metabolites are not likely to contribute any consequential pharmacologic activity. The rate of flecainide elimination from plasma is somewhat slower in patients with moderate renal failure and in patients with CHF than that for healthy persons, and is markedly slower in some patients with end-stage renal disease. Urinary excretion of unchanged flecainide is somewhat less in moderate renal patients and is markedly less in end-stage renal patients, but is not altered in CHF patients. Dosage should be reduced in patients with more severe renal disease and, if indicated, in some CHF patients. Hemodialysis is not an effective means for removal of unchanged flecainide, but does provide more substantial removal of metabolites. Flecainide is not extensively bound (mean 40%) to human plasma proteins Topics: Animals; Anti-Arrhythmia Agents; Biotransformation; Blood Proteins; Chromatography, High Pressure Liquid; Female; Flecainide; Half-Life; Heart Failure; Humans; Intestinal Absorption; Kidney Failure, Chronic; Kinetics; Male; Piperidines | 1984 |
The treatment of malaria.
At least four doses of quinine followed by a single dose of mefloquine or by a single dose of sulfadoxine-pyrimethamine are two highly effective regimens for chloroquine-resistant falciparum malaria. Mefloquine alone is valuable in ambulant patients. Chloroquine-sensitive falciparum malaria can be treated with a course of chloroquine. Vivax and all other types of malaria should be treated with sequential chloroquine and primaquine. Quinine, by intravenous infusion, is the most effective drug for severe falciparum malaria. The optimum intravenous dose varies between 5 mg/kg and 10 mg/kg administered over four hours. Intravenous or oral quinine should be administered about every 12 hours and the total daily dose of quinine should rarely exceed 20 mg/kg. Intravenous fluid input should be controlled in falciparum malaria to prevent pulmonary oedema. Established renal failure is best treated by dialysis. The value of adrenocortical steroids for falciparum coma has not been established. Fresh blood transfusion may be helpful in small doses for severe anaemia and to replace clotting factors. Anticoagulants, such as heparin, should not be used in falciparum malaria. Topics: Anemia; Antimalarials; Blackwater Fever; Child; Child, Preschool; Chloroquine; Coma; Drug Combinations; Drug Resistance, Microbial; Hemorrhage; Humans; Kidney Failure, Chronic; Malaria; Piperidines; Plasmodium falciparum; Plasmodium vivax; Primaquine; Pulmonary Edema; Quinine; Quinolines; Sulfadoxine | 1976 |
9 trial(s) available for piperidines and Kidney-Failure--Chronic
Article | Year |
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A phase 2 study of oral difelikefalin in subjects with chronic kidney disease and moderate-to-severe pruritus.
Chronic pruritus is burdensome for patients with chronic kidney disease (CKD).. We evaluated difelikefalin efficacy and safety in reducing itch in subjects with non-dialysis-dependent CKD and those undergoing hemodialysis (HD).. This phase 2, double-blind, randomized, placebo-controlled, dose-finding study enrolled non-dialysis-dependent CKD (stage 3-5) and HD subjects with moderate-to-severe pruritus. Subjects were equally randomized to oral difelikefalin (0.25, 0.5, or 1.0 mg) or placebo once daily for 12 weeks. The primary end point was the change in the weekly mean Worst Itching Intensity Numeric Rating Scale (WI-NRS) score at week 12.. Two hundred sixty-nine subjects were randomized (mean [SD] baseline WI-NRS: 7.1 [1.2]). Difelikefalin 1.0 mg significantly reduced weekly mean WI-NRS scores versus placebo at week 12 (P = .018), with numerical reductions observed with difelikefalin 0.25 and 0.5 mg. At week 12, 38.6% of subjects receiving difelikefalin 1.0 mg achieved a complete response (WI-NRS 0-1) versus 14.4% receiving placebo. Difelikefalin resulted in ∼20% improvement in itch-related quality-of-life measures. The most common treatment-emergent adverse events were dizziness, fall, constipation, diarrhea, gastroesophageal reflux disease, fatigue, hyperkalemia, hypertension, and urinary tract infection.. Study duration was 12 weeks.. Oral difelikefalin significantly reduced itch intensity in stage 3-5 CKD subjects with moderate-to-severe pruritus, supporting continued development for this condition. Topics: Double-Blind Method; Humans; Kidney Failure, Chronic; Piperidines; Pruritus; Renal Dialysis; Severity of Illness Index | 2023 |
A Phase 3 Trial of Difelikefalin in Hemodialysis Patients with Pruritus.
Difelikefalin is a peripherally restricted and selective agonist of kappa opioid receptors that are considered to be important in modulating pruritus in conditions such as chronic kidney disease.. In this double-blind, placebo-controlled, phase 3 trial, we randomly assigned patients undergoing hemodialysis who had moderate-to-severe pruritus to receive either intravenous difelikefalin (at a dose of 0.5 μg per kilogram of body weight) or placebo three times per week for 12 weeks. The primary outcome was the percentage of patients with an improvement (decrease) of at least 3 points from baseline at week 12 in the weekly mean score on the 24-hour Worst Itching Intensity Numerical Rating Scale (WI-NRS; scores range from 0 to 10, with higher scores indicating greater itch intensity). The secondary outcomes included the change from baseline in itch-related quality-of-life measures, the percentage of patients with an improvement of at least 4 points in the WI-NRS score at week 12, and safety.. A total of 378 patients underwent randomization. A total of 82 of 158 patients (51.9%) in the difelikefalin group had a decrease of at least 3 points in the WI-NRS score (primary outcome), as compared with 51 of 165 (30.9%) in the placebo group. The imputed percentage of patients with a decrease of at least 3 points in the WI-NRS score was 49.1% in the difelikefalin group, as compared with 27.9% in the placebo group (P<0.001). Difelikefalin also resulted in a significant improvement from baseline to week 12 in itch-related quality of life as measured by the 5-D itch scale and the Skindex-10 scale. The imputed percentage of patients with a decrease of at least 4 points in the WI-NRS score at week 12 was significantly greater in the difelikefalin group than in the placebo group (37.1% [observed data: 64 of 158 patients] vs. 17.9% [observed data: 35 of 165 patients], P<0.001). Diarrhea, dizziness, and vomiting were more common in the difelikefalin group than in the placebo group.. Patients treated with difelikefalin had a significant reduction in itch intensity and improved itch-related quality of life as compared with those who received placebo. (Funded by Cara Therapeutics; KALM-1 ClinicalTrials.gov number, NCT03422653.). Topics: Adult; Double-Blind Method; Female; Humans; Kidney Failure, Chronic; Male; Middle Aged; Piperidines; Pruritus; Quality of Life; Receptors, Opioid; Renal Dialysis; Treatment Outcome; Uremia | 2020 |
Pharmacokinetics and Safety After a Single Dose of Imarikiren in Subjects with Renal or Hepatic Impairment.
Imarikiren hydrochloride (TAK-272; SCO-272) is a novel direct renin inhibitor. The objective of this study was to determine the effects of renal impairment (RI) or hepatic impairment (HI) on the pharmacokinetics and safety of imarikiren.. This phase I, open-label, parallel-group comparative study evaluated the pharmacokinetics and safety of a single 40 mg oral dose of imarikiren in RI [mild, moderate, severe, or end-stage renal disease (ESRD), and on hemodialysis] or HI (mild or moderate) subjects compared with subjects with normal renal or hepatic function.. Following administration of a single 40 mg oral imarikiren dose, the geometric mean imarikiren area under the plasma concentration-time curve from time zero to infinity (AUC. RI and HI are associated with limited changes in imarikiren pharmacokinetics. Imarikiren was safe and well-tolerated, regardless of the severity of RI or HI.. ClinicalTrials.gov Identifier: NCT02367872. Topics: Adult; Aged; Area Under Curve; Benzimidazoles; Cardiovascular Agents; Enzyme Inhibitors; Female; Humans; Kidney; Kidney Failure, Chronic; Liver Diseases; Male; Middle Aged; Morpholines; Piperidines; Renal Dialysis | 2018 |
Middle East Respiratory Syndrome (MERS) is a novel respiratory illness firstly reported in Saudi Arabia in 2012. It is caused by a new corona virus, called MERS corona virus (MERS-CoV). Most people who have MERS-CoV infection developed severe acute respiratory illness.. This work is done to determine the clinical characteristics and the outcome of intensive care unit (ICU) admitted patients with confirmed MERS-CoV infection.. This study included 32 laboratory confirmed MERS corona virus infected patients who were admitted into ICU. It included 20 (62.50%) males and 12 (37.50%) females. The mean age was 43.99 ± 13.03 years. Diagnosis was done by real-time reverse transcription polymerase chain reaction (rRT-PCR) test for corona virus on throat swab, sputum, tracheal aspirate, or bronchoalveolar lavage specimens. Clinical characteristics, co-morbidities and outcome were reported for all subjects.. Most MERS corona patients present with fever, cough, dyspnea, sore throat, runny nose and sputum. The presence of abdominal symptoms may indicate bad prognosis. Prolonged duration of symptoms before patients' hospitalization, prolonged duration of mechanical ventilation and hospital stay, bilateral radiological pulmonary infiltrates, and hypoxemic respiratory failure were found to be strong predictors of mortality in such patients. Also, old age, current smoking, smoking severity, presence of associated co-morbidities like obesity, diabetes mellitus, chronic heart diseases, COPD, malignancy, renal failure, renal transplantation and liver cirrhosis are associated with a poor outcome of ICU admitted MERS corona virus infected patients.. Plasma HO-1, ferritin, p21, and NQO1 were all elevated at baseline in CKD participants. Plasma HO-1 and urine NQO1 levels each inversely correlated with eGFR (. SnPP can be safely administered and, after its injection, the resulting changes in plasma HO-1, NQO1, ferritin, and p21 concentrations can provide information as to antioxidant gene responsiveness/reserves in subjects with and without kidney disease.. A Study with RBT-1, in Healthy Volunteers and Subjects with Stage 3-4 Chronic Kidney Disease, NCT0363002 and NCT03893799.. HFNC did not significantly modify work of breathing in healthy subjects. However, a significant reduction in the minute volume was achieved, capillary [Formula: see text] remaining constant, which suggests a reduction in dead-space ventilation with flows > 20 L/min. (ClinicalTrials.gov registration NCT02495675).. 3 组患者手术时间、术中显性失血量及术后 1 周血红蛋白下降量比较差异均无统计学意义(. 对于肥胖和超重的膝关节单间室骨关节炎患者,采用 UKA 术后可获满意短中期疗效,远期疗效尚需进一步随访观察。.. Decreased muscle strength was identified at both time points in patients with hEDS/HSD. The evolution of most muscle strength parameters over time did not significantly differ between groups. Future studies should focus on the effectiveness of different types of muscle training strategies in hEDS/HSD patients.. These findings support previous adverse findings of e-cigarette exposure on neurodevelopment in a mouse model and provide substantial evidence of persistent adverse behavioral and neuroimmunological consequences to adult offspring following maternal e-cigarette exposure during pregnancy. https://doi.org/10.1289/EHP6067.. This RCT directly compares a neoadjuvant chemotherapy regimen with a standard CROSS regimen in terms of overall survival for patients with locally advanced ESCC. The results of this RCT will provide an answer for the controversy regarding the survival benefits between the two treatment strategies.. NCT04138212, date of registration: October 24, 2019.. Results of current investigation indicated that milk type and post fermentation cooling patterns had a pronounced effect on antioxidant characteristics, fatty acid profile, lipid oxidation and textural characteristics of yoghurt. Buffalo milk based yoghurt had more fat, protein, higher antioxidant capacity and vitamin content. Antioxidant and sensory characteristics of T. If milk is exposed to excessive amounts of light, Vitamins B. The two concentration of ZnO nanoparticles in the ambient air produced two different outcomes. The lower concentration resulted in significant increases in Zn content of the liver while the higher concentration significantly increased Zn in the lungs (p < 0.05). Additionally, at the lower concentration, Zn content was found to be lower in brain tissue (p < 0.05). Using TEM/EDX we detected ZnO nanoparticles inside the cells in the lungs, kidney and liver. Inhaling ZnO NP at the higher concentration increased the levels of mRNA of the following genes in the lungs: Mt2 (2.56 fold), Slc30a1 (1.52 fold) and Slc30a5 (2.34 fold). At the lower ZnO nanoparticle concentration, only Slc30a7 mRNA levels in the lungs were up (1.74 fold). Thus the two air concentrations of ZnO nanoparticles produced distinct effects on the expression of the Zn-homeostasis related genes.. Until adverse health effects of ZnO nanoparticles deposited in organs such as lungs are further investigated and/or ruled out, the exposure to ZnO nanoparticles in aerosols should be avoided or minimised. Topics: A549 Cells; Acetylmuramyl-Alanyl-Isoglutamine; Acinetobacter baumannii; Acute Lung Injury; Adaptor Proteins, Signal Transducing; Adenine; Adenocarcinoma; Adipogenesis; Administration, Cutaneous; Administration, Ophthalmic; Adolescent; Adsorption; Adult; Aeromonas hydrophila; Aerosols; Aged; Aged, 80 and over; Aging; Agriculture; Air Pollutants; Air Pollution; Airway Remodeling; Alanine Transaminase; Albuminuria; Aldehyde Dehydrogenase 1 Family; Algorithms; AlkB Homolog 2, Alpha-Ketoglutarate-Dependent Dioxygenase; Alzheimer Disease; Amino Acid Sequence; Ammonia; Ammonium Compounds; Anaerobiosis; Anesthetics, Dissociative; Anesthetics, Inhalation; Animals; Anti-Bacterial Agents; Anti-HIV Agents; Anti-Infective Agents; Anti-Inflammatory Agents; Antibiotics, Antineoplastic; Antibodies, Antineutrophil Cytoplasmic; Antibodies, Monoclonal, Humanized; Antifungal Agents; Antigens, Bacterial; Antigens, CD; Antigens, Differentiation, Myelomonocytic; Antimetabolites, Antineoplastic; Antineoplastic Agents; Antineoplastic Combined Chemotherapy Protocols; Antioxidants; Antitubercular Agents; Antiviral Agents; Apolipoproteins E; Apoptosis; Arabidopsis; Arabidopsis Proteins; Arsenic; Arthritis, Rheumatoid; Asthma; Atherosclerosis; ATP-Dependent Proteases; Attitude of Health Personnel; Australia; Austria; Autophagy; Axitinib; Bacteria; Bacterial Outer Membrane Proteins; Bacterial Proteins; Bacterial Toxins; Bacterial Typing Techniques; Bariatric Surgery; Base Composition; Bayes Theorem; Benzoxazoles; Benzylamines; beta Catenin; Betacoronavirus; Betula; Binding Sites; Biological Availability; Biological Oxygen Demand Analysis; Biomarkers; Biomarkers, Tumor; Biopsy; Bioreactors; Biosensing Techniques; Birth Weight; Blindness; Blood Chemical Analysis; Blood Gas Analysis; Blood Glucose; Blood Pressure; Blood Pressure Monitoring, Ambulatory; Blood-Brain Barrier; Blotting, Western; Body Mass Index; Body Weight; Bone and Bones; Bone Density; Bone Resorption; Borates; Brain; Brain Infarction; Brain Injuries, Traumatic; Brain Neoplasms; Breakfast; Breast Milk Expression; Breast Neoplasms; Bronchi; Bronchoalveolar Lavage Fluid; Buffaloes; Cadherins; Calcification, Physiologic; Calcium Compounds; Calcium, Dietary; Cannula; Caprolactam; Carbon; Carbon Dioxide; Carboplatin; Carcinogenesis; Carcinoma, Ductal; Carcinoma, Ehrlich Tumor; Carcinoma, Hepatocellular; Carcinoma, Non-Small-Cell Lung; Carcinoma, Pancreatic Ductal; Carcinoma, Renal Cell; Cardiovascular Diseases; Carps; Carrageenan; Case-Control Studies; Catalysis; Catalytic Domain; Cattle; CD8-Positive T-Lymphocytes; Cell Adhesion; Cell Cycle Proteins; Cell Death; Cell Differentiation; Cell Line; Cell Line, Tumor; Cell Movement; Cell Nucleus; Cell Phone Use; Cell Proliferation; Cell Survival; Cell Transformation, Neoplastic; Cell Transformation, Viral; Cells, Cultured; Cellulose; Chemical Phenomena; Chemoradiotherapy; Child; Child Development; Child, Preschool; China; Chitosan; Chlorocebus aethiops; Cholecalciferol; Chromatography, Liquid; Circadian Clocks; 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Forced Expiratory Volume; Forests; Fractures, Bone; Fruit and Vegetable Juices; Fusobacteria; G1 Phase Cell Cycle Checkpoints; G2 Phase Cell Cycle Checkpoints; Gamma Rays; Gastrectomy; Gastrointestinal Microbiome; Gastrointestinal Stromal Tumors; Gefitinib; Gels; Gemcitabine; Gene Amplification; Gene Expression; Gene Expression Regulation; Gene Expression Regulation, Bacterial; Gene Expression Regulation, Neoplastic; Gene Expression Regulation, Plant; Gene Knockdown Techniques; Gene-Environment Interaction; Genotype; Germany; Glioma; Glomerular Filtration Rate; Glucagon; Glucocorticoids; Glycemic Control; Glycerol; Glycogen Synthase Kinase 3 beta; Glycolipids; Glycolysis; Goblet Cells; Gram-Negative Bacterial Infections; Granulocyte Colony-Stimulating Factor; Graphite; Greenhouse Effect; Guanidines; Haemophilus influenzae; HCT116 Cells; Health Knowledge, Attitudes, Practice; Health Personnel; Health Services Accessibility; Health Services Needs and Demand; Health Status Disparities; Healthy Volunteers; 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Oocytes; Open Reading Frames; Osteoclasts; Osteogenesis; Osteoporosis; Osteoporosis, Postmenopausal; Outpatients; Ovarian Neoplasms; Ovariectomy; Overweight; Oxazines; Oxidants; Oxidation-Reduction; Oxidative Stress; Oxides; Oxidoreductases; Oxygen; Oxygen Inhalation Therapy; Oxygenators, Membrane; Ozone; Paclitaxel; Paenibacillus; Pain Measurement; Palliative Care; Pancreatic Neoplasms; Pandemics; Parasympathetic Nervous System; Particulate Matter; Pasteurization; Patient Preference; Patient Satisfaction; Pediatric Obesity; Permeability; Peroxiredoxins; Peroxynitrous Acid; Pharmaceutical Services; Pharmacists; Pharmacy; Phaseolus; Phenotype; Phoeniceae; Phosphates; Phosphatidylinositol 3-Kinases; Phospholipid Transfer Proteins; Phospholipids; Phosphorus; Phosphorylation; Photoperiod; Photosynthesis; Phylogeny; Physical Endurance; Physicians; Pilot Projects; Piperidines; Pituitary Adenylate Cyclase-Activating Polypeptide; Plant Extracts; Plant Leaves; Plant Proteins; Plant Roots; Plaque, Atherosclerotic; Pneumonia; Pneumonia, Viral; Point-of-Care Testing; Polyethylene Glycols; Polymers; Polysorbates; Pore Forming Cytotoxic Proteins; Positron Emission Tomography Computed Tomography; Positron-Emission Tomography; Postprandial Period; Poverty; Pre-Exposure Prophylaxis; Prediabetic State; Predictive Value of Tests; Pregnancy; Pregnancy Trimester, First; Pregnancy, High-Risk; Prenatal Exposure Delayed Effects; Pressure; Prevalence; Primary Graft Dysfunction; Primary Health Care; Professional Role; Professionalism; Prognosis; Progression-Free Survival; Prolactin; Promoter Regions, Genetic; Proof of Concept Study; Proportional Hazards Models; Propylene Glycol; Prospective Studies; Prostate; Protein Binding; Protein Biosynthesis; Protein Isoforms; Protein Kinase Inhibitors; Protein Phosphatase 2; Protein Processing, Post-Translational; Protein Serine-Threonine Kinases; Protein Structure, Tertiary; Protein Transport; Proteoglycans; Proteome; Proto-Oncogene Proteins c-akt; Proto-Oncogene Proteins c-myc; Proto-Oncogene Proteins c-ret; Proto-Oncogene Proteins p21(ras); Proton Pumps; Protons; Protoporphyrins; Pseudomonas aeruginosa; Pseudomonas fluorescens; Pulmonary Artery; Pulmonary Disease, Chronic Obstructive; Pulmonary Gas Exchange; Pulmonary Veins; Pyrazoles; Pyridines; Pyrimidines; Qualitative Research; Quinoxalines; Rabbits; Random Allocation; Rats; Rats, Sprague-Dawley; Rats, Wistar; Receptors, Histamine H3; Receptors, Immunologic; Receptors, Transferrin; Recombinant Proteins; Recurrence; Reference Values; Referral and Consultation; Regional Blood Flow; Registries; Regulon; Renal Insufficiency, Chronic; Reperfusion Injury; Repressor Proteins; Reproducibility of Results; Republic of Korea; Research Design; Resistance Training; Respiration, Artificial; Respiratory Distress Syndrome; Respiratory Insufficiency; Resuscitation; Retinal Dehydrogenase; Retreatment; Retrospective Studies; Reverse Transcriptase Inhibitors; Rhinitis, Allergic; Ribosomal Proteins; Ribosomes; Risk Assessment; Risk Factors; Ritonavir; Rivers; RNA Interference; RNA-Seq; RNA, Messenger; RNA, Ribosomal, 16S; RNA, Small Interfering; Rosuvastatin Calcium; Rural Population; Saccharomyces cerevisiae; Saccharomyces cerevisiae Proteins; Salivary Ducts; Salivary Gland Neoplasms; San Francisco; SARS-CoV-2; Satiation; Satiety Response; Schools; Schools, Pharmacy; Seasons; Seawater; Selection, Genetic; Sequence Analysis, DNA; Serine-Threonine Kinase 3; Sewage; Sheep; Sheep, Domestic; Shock, Hemorrhagic; Signal Transduction; Silver; Silymarin; Single Photon Emission Computed Tomography Computed Tomography; Sirolimus; Sirtuin 1; Skin; Skin Neoplasms; Skin Physiological Phenomena; Sleep Initiation and Maintenance Disorders; Social Class; Social Participation; Social Support; Soil; Soil Microbiology; Solutions; Somatomedins; Soot; Specimen Handling; Spectrophotometry, Ultraviolet; Spectroscopy, Fourier Transform Infrared; Spectrum Analysis; Spinal Fractures; Spirometry; Staphylococcus aureus; STAT1 Transcription Factor; STAT3 Transcription Factor; Streptomyces coelicolor; Stress, Psychological; Stroke; Stroke Volume; Structure-Activity Relationship; Students, Medical; Students, Pharmacy; Substance Abuse Treatment Centers; Sulfur Dioxide; Surface Properties; Surface-Active Agents; Surveys and Questionnaires; Survival Analysis; Survival Rate; Survivin; Sweden; Swine; Swine, Miniature; Sympathetic Nervous System; T-Lymphocytes, Regulatory; Talaromyces; Tandem Mass Spectrometry; tau Proteins; Telemedicine; Telomerase; Telomere; Telomere Homeostasis; Temperature; Terminally Ill; Th1 Cells; Thiamethoxam; Thiazoles; Thiophenes; Thioredoxin Reductase 1; Thrombosis; Thulium; Thyroid Cancer, Papillary; Thyroid Carcinoma, Anaplastic; Thyroid Neoplasms; Time Factors; Titanium; Tomography, Emission-Computed, Single-Photon; Tomography, X-Ray Computed; TOR Serine-Threonine Kinases; Transcription Factor AP-1; Transcription Factors; Transcription, Genetic; Transcriptional Activation; Transcriptome; Transforming Growth Factor beta1; Transistors, Electronic; Translational Research, Biomedical; Transplantation Tolerance; Transplantation, Homologous; Transportation; Treatment Outcome; Tretinoin; Tuberculosis, Multidrug-Resistant; Tuberculosis, Pulmonary; Tubulin Modulators; Tumor Microenvironment; Tumor Necrosis Factor Inhibitors; Tumor Necrosis Factor-alpha; Twins; Ultrasonic Therapy; Ultrasonography; Ultraviolet Rays; United States; Up-Regulation; Uranium; Urethra; Urinary Bladder; Urodynamics; Uromodulin; Uveitis; Vasoconstrictor Agents; Ventricular Function, Left; Vero Cells; Vesicular Transport Proteins; Viral Nonstructural Proteins; Visual Acuity; Vital Capacity; Vitamin D; Vitamin D Deficiency; Vitamin K 2; Vitamins; Volatilization; Voriconazole; Waiting Lists; Waste Disposal, Fluid; Wastewater; Water Pollutants, Chemical; Whole Genome Sequencing; Wine; Wnt Signaling Pathway; Wound Healing; Wounds and Injuries; WW Domains; X-linked Nuclear Protein; X-Ray Diffraction; Xanthines; Xenograft Model Antitumor Assays; YAP-Signaling Proteins; Yogurt; Young Adult; Zebrafish; Zebrafish Proteins; Ziziphus | 2016 |
Endothelin-A receptor antagonism reduces blood pressure and increases renal blood flow in hypertensive patients with chronic renal failure: a comparison of selective and combined endothelin receptor blockade.
Endothelin (ET) is implicated in the pathophysiology of chronic renal failure (CRF). We therefore studied the systemic and renal hemodynamic effects of ET receptor antagonists in CRF and examined differences between selective ETA, selective ETB, and combined ETA/B receptor blockade.. We conducted a randomized, placebo-controlled, double-blind, 4-way crossover study comparing selective ET receptor antagonists BQ-123 (ETA) and BQ-788 (ETB), given alone and in combination, in acute studies in 8 hypertensive CRF patients and 8 matched healthy controls. BQ-123, alone and in combination with BQ-788, reduced blood pressure in CRF, particularly with BQ-123 alone (mean arterial pressure: controls -4+/-2%, CRF -13+/-2%, P<0.01 versus placebo). In CRF, in the face of this fall in blood pressure, BQ-123 substantially increased renal blood flow (38.8+/-23.9%, P<0.01 versus placebo) and reduced renal vascular resistance (-44.5+/-11.3%, P<0.01 versus placebo) when given alone but not when combined with BQ-788. These changes were accompanied by a reduction in effective filtration fraction. BQ-123, alone or in combination with BQ-788, had minimal effects on the renal circulation in healthy controls, and BQ-788 alone produced both systemic and renal vasoconstriction in CRF and healthy controls.. ETA receptor antagonism was highly effective in lowering blood pressure in CRF patients currently treated for hypertension. In addition, there were effects consistent with a renoprotective action. However, because the ETB receptor appears to play a key role in the maintenance of tonic renal vasodilation, combined ETA/B receptor antagonism, although it lowered blood pressure, did not confer these renal benefits. Topics: Antihypertensive Agents; Blood Pressure; Cross-Over Studies; Double-Blind Method; Endothelin A Receptor Antagonists; Endothelin B Receptor Antagonists; Endothelin-1; Hemodynamics; Humans; Hypertension, Renal; Kidney; Kidney Failure, Chronic; Male; Middle Aged; Oligopeptides; Peptides, Cyclic; Piperidines; Proteinuria; Renal Circulation; Sodium | 2004 |
The vascular endothelin system is not overactive in normotensive hemodialysis patients.
The hemodynamic significance of elevated endothelin-1 (ET) plasma levels in hemodialysis (HD) patients is unknown. Therefore, we studied the role of ET in the regulation of vascular tone in normotensive HD patients and matched healthy controls (C).. The forearm blood flow (FBF) responses to adenosine, norepinephrine, the ET-A receptor antagonist BQ-123 (40 nmol/min), the ET-B receptor antagonist BQ-788 (1 and 50 nmol/min), and ET (5 pmol/min) were measured. Results are percent of baseline change +/- SEM (baseline = 100%).. Responses to adenosine and norepinephrine were both unchanged in HD. In HD, BQ-123 increased FBF less than in C (133 +/- 9 vs. 178 +/- 27%; P = 0.02). BQ-788 failed to change FBF in C but decreased FBF to 83 +/- 4% in HD. Compared to BQ-123 alone, BQ-123 plus BQ-788 (50 nmol/min) caused an additional increase of FBF (234 +/- 32%, P < 0.001) in C, but not in HD (139 +/- 14%). This additional increase was absent when BQ-788 was co-infused at 1 nmol/min. ET reduced FBF comparably in both groups.. Resistance vessels of HD patients have unremarkable contractile properties, as shown by responses to adenosine and norepinephrine. In HD, the basal vascular ET-mediated tone is reduced. The main action of the ET-B receptor in C is vasoconstrictive, which also is blunted in HD. The intact response to exogenous ET indicates the normal function of ET receptors in HD. Our results could be explained by a reduced generation or reduced metabolic clearance rate of ET in normotensive HD patients. Controversy remains concerning the role of the ET-B receptor when comparing the present data with previously published literature. Topics: Adenosine; Adult; Antihypertensive Agents; Blood Pressure; Brachial Artery; Endothelin Receptor Antagonists; Endothelin-1; Female; Humans; Kidney Failure, Chronic; Male; Middle Aged; Norepinephrine; Oligopeptides; Peptides, Cyclic; Piperidines; Receptor, Endothelin A; Receptor, Endothelin B; Regional Blood Flow; Renal Dialysis; Vasoconstrictor Agents; Vasodilator Agents | 2002 |
End-stage renal failure reduces central clearance and prolongs the elimination half life of remifentanil.
To evaluate the pharmacokinetics of remifentanil in 13 end-stage renal failure patients compared to matched control patients with normal renal function.. Remifentanil was infused for 20 min at a rate of 0.1 microg x kg(-1) x min(-1). Serial arterial blood samples (3 mL) were drawn at the start of infusion (zero), five, ten, 15, 20, 22.5, 25, 27.5, 30, 35, 40, 45, 50, 55 and 60 min. Blood samples were immediately preserved with citric acid and chilled on ice. High performance liquid chromatography-tandem mass spectrometry concentration assay was performed using GI 95779B internal standard.. A two-compartment pharmacokinetic model provided an adequate fit for individual patient data. There was no difference in the mean +/- SD distribution half life (t1/2) between the renal failure group (1.65 +/- 0.7 min) and the control group (1.58 +/- 0.54 min). There was a significant difference in the central clearance (Cl(c)) and elimination half life (t1/2) ss) between the renal failure group (28 +/- 7 mL x kg(-1) x min(-1) and 18.86 +/- 2.06 min, respectively) and the control group (46.3 +/- 13.8 mL x kg(-1) x min(-1) and 16.35 +/- 2.99 min, respectively). Remifentanil blood concentrations were significantly higher in the renal failure group than in the control group.. We have demonstrated a significant reduction in the Cl(c) and a prolongation of t1/2 ss of remifentanil in end-stage renal failure patients. While statistically significant, these variations in the pharmacokinetics of remifentanil were clinically modest and may be explained by a reduced volume of distribution in the period following hemodialysis. Topics: Analgesics, Opioid; Area Under Curve; Chromatography, High Pressure Liquid; Female; Half-Life; Humans; Kidney Failure, Chronic; Male; Mass Spectrometry; Middle Aged; Nonlinear Dynamics; Piperidines; Prospective Studies; Remifentanil | 2002 |
Pharmacokinetics of ritanserin in patients undergoing hemodialysis.
The pharmacokinetics of ritanserin were studied in five patients with chronic renal insufficiency and who were undergoing periodic hemodialysis. Immediately after breakfast, a single 10-mg ritanserin tablet was administered to each patient on a day that they did not undergo dialysis. Plasma ritanserin levels were measured by a specific high-performance liquid chromatographic assay sensitive to 2 ng/mL plasma. After the oral 10-mg dose, the average time to reach the peak plasma concentration, Tmax, was 4.4 +/- 2.2 hours in these uremic patients, with a range of 2 to 8 hours. The average peak plasma concentration was 73.6 +/- 26.9 ng/mL (range: 54.6-120.0 ng/mL). Compared with a previous study in healthy volunteers, the uremic patients had a slower absorption profile, with a 39% reduction in peak plasma concentration and mean delay of 2.5 hours in Tmax. The mean area under the plasma concentration-time curve for ritanserin (2031 +/- 636 ng.hr/mL) was 47% lower compared with that in healthy volunteers (3867 +/- 1413 ng.hr/mL). The observed delayed and lower ritanserin absorption in these uremic patients may be caused by the chronic use of antacids such as aluminum hydroxide and calcium carbonate in all patients and/or by concurrent pathologic changes in the gastrointestinal mucosa of these patients. The regular hemodialysis sessions every 2-3 days did not affect the elimination rate of ritanserin, as the terminal half-life in these patients (39 +/- 23 hr) is similar to that in healthy volunteers (41 +/- 14 hr). Topics: Administration, Oral; Adult; Female; Half-Life; Humans; Kidney Failure, Chronic; Male; Middle Aged; Piperidines; Renal Dialysis; Ritanserin; Uremia | 1991 |
The pharmacokinetics of paroxetine in renal impairment.
Topics: Adult; Aged; Antidepressive Agents; Clinical Trials as Topic; Female; Humans; Kidney Failure, Chronic; Kidney Function Tests; Male; Metabolic Clearance Rate; Middle Aged; Paroxetine; Piperidines; Serotonin Antagonists | 1989 |
29 other study(ies) available for piperidines and Kidney-Failure--Chronic
Article | Year |
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KMUP-1 regulates the vascular calcification in chronic renal failure by mediating NO/cGMP/PKG signaling pathway.
To explore the potential mechanism of KMUP-1 in the vascular calcification of chronic renal failure (CRF) through mediating NO/cGMP/PKG pathway, and provide novel insights into the CRF treatment.. CRF rats were treated by KMUP-1 with/without L-NNA (a NOS inhibitor) and then performed by ELISA, alizarin red staining, Von Kossa staining, Masson's trichrome, Sirius red staining and CD3 immunohistochemical staining. Simultaneously, vascular smooth muscle cells (VSMCs) were collected from rats to confirm the effect of KMUP-1 on vascular calcification in vitro via NO/cGMP/PKG pathway. Besides, protein and mRNA expressions were determined via Western blotting and qRT-PCR, respectively.. CRF rats were elevated in 24-h urine protein, blood urea nitrogen (BUN), serum creatinine, Cys-C levels and inflammatory cytokines. Besides, CRF rats also showed increased calcium content and ALP level with up-regulated mRNA of osteogenic differentiation-related markers. Furthermore, the up-regulated expressions of eNOS and PKG, as well as down-regulated levels of NOx and cGMP were also found in CRF rats. However, renal failure and vascular calcification of CRF were improved significantly by KMUP-1 treatment via activation of NO/cGMP/PKG pathway. Moreover, KMUP-1 treatment attenuated calcified VSMCs, accompanied by the decreases in the calcified nodules, level of calcium and activity of ALP. In addition, either L-NNA treatment for CRF rats or the calcified VSMCs could antagonize the improving effect of KMUP-1.. KMUP-1 can improve the renal function and vascular calcification in CRF rats at least in part by activating NO/cGMP/PKG pathway. Topics: Animals; Calcium; Cyclic GMP; Cyclic GMP-Dependent Protein Kinases; Disease Models, Animal; Kidney Failure, Chronic; Male; Myocytes, Smooth Muscle; Nitric Oxide; Osteogenesis; Piperidines; Rats; Rats, Sprague-Dawley; Signal Transduction; Vascular Calcification; Xanthines | 2020 |
Ibrutinib therapy for lymphoplasmacytic lymphoma.
Topics: Adenine; Adult; Agammaglobulinaemia Tyrosine Kinase; Aged; Aged, 80 and over; Antineoplastic Agents; Female; Humans; Immunoglobulin M; Kidney Failure, Chronic; Male; Middle Aged; Molecular Targeted Therapy; Neoplasm Proteins; Paraproteins; Piperidines; Protein-Tyrosine Kinases; Pyrazoles; Pyrimidines; Salvage Therapy; Treatment Outcome; Waldenstrom Macroglobulinemia | 2017 |
Pharmacokinetics of tofacitinib, a janus kinase inhibitor, in patients with impaired renal function and end-stage renal disease.
The pharmacokinetics (PK) of tofacitinib were assessed in patients with mild (Cockcroft-Gault creatinine clearance >50 and ≤80 mL/min), moderate (≥30 and ≤50 mL/min), and severe (<30 mL/min) renal impairment, and end-stage renal disease (ESRD) requiring dialysis. Six patients each with normal, mild, moderate, or severely impaired renal function, and 12 patients with ESRD, received single tofacitinib doses of 10 mg. PK data were obtained from blood and dialyzate (patients with ESRD only) samples prior and subsequent to dosing and/or hemodialysis (patients with ESRD only). Relative to patients with normal renal function, mean (90% CI) AUC(0-∞) ratios were 137% (97-195), 143% (101-202), and 223% (157-316) in patients with mild, moderate, and severe renal impairment, respectively. Maximum plasma concentrations (Cmax ) were similar across the four treatment groups. Terminal phase half-life (t1/2 ) increased with severity of renal impairment. Mean AUC(0-∞) in patients with ESRD on a non-dialysis day was similar to that in patients with moderate renal impairment and approximately 40% greater than healthy volunteer data. Mean (SD) dialyzer efficiency (ratio of dialyzer clearance/blood flow entering the dialyzer) was 0.73 (0.15). However, due to extensive non-renal clearance, dialysis procedure is unlikely to result in significant elimination of tofacitinib. Topics: Adult; Aged; Area Under Curve; Aryl Hydrocarbon Hydroxylases; Cytochrome P-450 CYP2C19; Cytochrome P-450 CYP3A; Female; Half-Life; Humans; Janus Kinases; Kidney Diseases; Kidney Failure, Chronic; Liver; Male; Middle Aged; Piperidines; Protein Kinase Inhibitors; Pyrimidines; Pyrroles; Renal Dialysis | 2014 |
Progressive endothelin-1 gene activation initiates chronic/end-stage renal disease following experimental ischemic/reperfusion injury.
This study assessed whether endothelin-1 (ET-1) helps mediate postischemic acute kidney injury (AKI) progression to chronic kidney disease (CKD). The impact(s) of potent ETA or ETB receptor-specific antagonists (Atrasentan and BQ-788, respectively) on disease progression were assessed 24 h or 2 weeks following 30 min of unilateral ischemia in CD-1 mice. Unilateral ischemia caused progressive renal ET-1 protein/mRNA increases with concomitant ETA, but not ETB, mRNA elevations. Extensive histone remodeling consistent with gene activation and increased RNA polymerase II (Pol II) binding occurred at the ET-1 gene. Unilateral ischemia produced progressive renal injury as indicated by severe histologic injury and a 40% loss of renal mass. Pre- and post-ischemia or just postischemic treatment with Atrasentan conferred dramatic protective effects such as decreased tubule/microvascular injury, normalized tissue lactate, and total preservation of renal mass. Nuclear KI-67 staining was not increased by Atrasentan, implying that increased tubule proliferation was not involved. Conversely, ETB blockade had no protective effect. Thus, our findings provide the first evidence that ET-1 operating through ETA can have a critical role in ischemic AKI progression to CKD. Blockade of ETA provided dramatic protection, indicating the functional significance of these results. Topics: Animals; Atrasentan; Disease Models, Animal; Disease Progression; Endothelin A Receptor Antagonists; Endothelin B Receptor Antagonists; Endothelin-1; Kidney Failure, Chronic; Male; Mice; Mice, Inbred Strains; Oligopeptides; Piperidines; Pyrrolidines; Receptor, Endothelin A; Receptor, Endothelin B; Renal Insufficiency, Chronic; Reperfusion Injury; RNA, Messenger | 2013 |
Effects of DPP-4 inhibitors on the heart in a rat model of uremic cardiomyopathy.
Uremic cardiomyopathy contributes substantially to mortality in chronic kidney disease (CKD) patients. Glucagon-like peptide-1 (GLP-1) may improve cardiac function, but is mainly degraded by dipeptidyl peptidase-4 (DPP-4).. In a rat model of chronic renal failure, 5/6-nephrectomized [5/6N] rats were treated orally with DPP-4 inhibitors (linagliptin, sitagliptin, alogliptin) or placebo once daily for 4 days from 8 weeks after surgery, to identify the most appropriate treatment for cardiac dysfunction associated with CKD. Linagliptin showed no significant change in blood level AUC(0-∞) in 5/6N rats, but sitagliptin and alogliptin had significantly higher AUC(0-∞) values; 41% and 28% (p = 0.0001 and p = 0.0324), respectively. No correlation of markers of renal tubular and glomerular function with AUC was observed for linagliptin, which required no dose adjustment in uremic rats. Linagliptin 7 µmol/kg caused a 2-fold increase in GLP-1 (AUC 201.0 ng/l*h) in 5/6N rats compared with sham-treated rats (AUC 108.6 ng/l*h) (p = 0.01). The mRNA levels of heart tissue fibrosis markers were all significantly increased in 5/6N vs control rats and reduced/normalized by linagliptin.. DPP-4 inhibition increases plasma GLP-1 levels, particularly in uremia, and reduces expression of cardiac mRNA levels of matrix proteins and B-type natriuretic peptides (BNP). Linagliptin may offer a unique approach for treating uremic cardiomyopathy in CKD patients, with no need for dose-adjustment. Topics: Animals; Area Under Curve; Cardiomyopathies; Dipeptidyl Peptidase 4; Dipeptidyl-Peptidase IV Inhibitors; Disease Models, Animal; Gene Expression Regulation; Glomerular Filtration Rate; Glucagon-Like Peptide 1; Heart; Humans; Kidney Failure, Chronic; Linagliptin; Myocardium; Natriuretic Peptide, Brain; Nephrectomy; Piperidines; Purines; Pyrazines; Quinazolines; Rats; Reverse Transcriptase Polymerase Chain Reaction; Sitagliptin Phosphate; Triazoles; Uracil; Uremia | 2011 |
Evidence of alpha1-adrenoceptor functional changes in omental arteries of patients with end-stage renal disease.
1 Alpha1-Adrenoceptor (alpha1-AR) subtypes were characterized in isolated omental arteries obtained after abdominal surgery in patients with end-stage renal disease (ESRD) or with Diabetes Mellitus type 2 plus ESRD (ESRD-DM). 2 Omental arteries from patients with ESRD and ESRD-DM elicited a significant increase in sensitivity to phenylephrine with a pD(2) (-log EC50) of 6.7 and 6.6, respectively, vs. the control (5.8, P < 0.001). 3 Stimulation with phenylephrine was conducted in the presence or absence of selective alpha1-AR competitive antagonists: 5-methylurapidil (alpha1A-), AH11110A (1-[biphenyl-2-yloxy]-4-imino-4-piperidin-1-yl-butan-2-ol; alpha1B-) and BMY7378 (8-[2-[4-(2-methoxyphenyl)-1-piperazinyl]ethyl]-8-azaspiro [4.5] decane-7,9-dione; alpha(1D)-). The relative abundance of mRNA for all three alpha(1)-ARs was determined. 4 The maximal contractile responses to phenylephrine were: E(max) 1.59 +/- 0.17, 1.48 +/- 0.08 and 1.55 +/- 0.14 g for the ESRD, ESRD-DM and control groups, respectively. 5 Functionally, there was an increment in the affinity for the alpha(1A)-AR antagonist (pA2: control 7.45, ESRD 8.36, ESRD-DM 8.0; P < 0.01), and a reduction in the alpha1B-AR antagonist affinity (8.3 for controls, 7.6 for ESRD and 7.3 for ESRD-DM; P < 0.01) associated with renal disease. The affinities for the alpha1D-AR antagonist were similar among the studied groups (8.5 for the controls, 8.7 for the ESRD and 8.1 for the ESRD-DM groups). 6 Renal disease increased mRNA expression of alpha(1B)-ARs and reduced both alpha1A- and alpha(1D)-ARs subtypes in ESRD and ESRD-DM patients. 7 The results suggest that human omental arteries exposed to chronic uraemia show vascular hypersensitivity to phenylephrine, because of functional alpha1-AR changes. Topics: Adrenergic alpha-Agonists; Adrenergic alpha-Antagonists; Adult; Arteries; Diabetes Mellitus, Type 2; Dose-Response Relationship, Drug; Female; Humans; Imines; Kidney Failure, Chronic; Male; Middle Aged; Omentum; Phenylephrine; Piperazines; Piperidines; Receptors, Adrenergic, alpha-1; Reverse Transcriptase Polymerase Chain Reaction; RNA, Messenger; Vasoconstriction; Vasoconstrictor Agents | 2008 |
Beneficial effects of CCR1 blockade on the progression of chronic renal allograft damage.
The biology of chemokines and their receptors have been linked to the development of chronic allograft damage. Effects of CCR1 antagonist BX 471 were studied in a Fischer to Lewis renal transplantation model at days 10, 21 and 42 after transplantation. BX 471 treatment did not effectively reduce signs of acute rejection at day 10 but significantly improved allograft function and morphology at day 21 posttransplantation. When therapy was initiated on day 21 after transplantation, glomerulosclerosis and tubulointerstitial fibrosis were significantly inhibited by day 42 posttransplantation. Parallel decrease in infiltrating and proliferating mononuclear cells (ED1, CD8 and Ki67) was observed in treated allografts. Expression of acute phase reactive and proinflammatory genes (HO-1, osteopontin) and molecules associated with fibrosis (PAI-1, TGF-beta1, biglycan) was downregulated at day 21; reduced collagen deposition was observed, parallel to a significant lower number of alpha-SMA+ interstitial myofibroblasts. In situ hybridization demonstrated that biglycan expression was reduced following CCR1 blockade in interstitium of treated allografts. CCR1 antagonism was found to inhibit CCL5-induced secretion of biglycan by macrophages in vitro. CCR1 blockade significantly inhibited development and progression of chronic allograft damage. CCR1 antagonists may represent a therapeutic option for chronic inflammation and fibrosis in renal grafts. Topics: Animals; Biglycan; Disease Progression; Extracellular Matrix Proteins; Fibrosis; Graft Rejection; Graft Survival; Kidney Failure, Chronic; Kidney Transplantation; Lymphocyte Activation; Macrophages; Models, Animal; Phenylurea Compounds; Piperidines; Proteoglycans; Rats; Receptors, CCR1; Receptors, Chemokine; RNA, Messenger; T-Lymphocytes | 2007 |
Blockade of cannabinoid CB1 receptors improves renal function, metabolic profile, and increased survival of obese Zucker rats.
Obesity is a major risk factor in the development of chronic renal failure. Rimonabant, a cannabinoid CB1 receptor antagonist, improves body weight and metabolic disorders; however, its effect on mortality and chronic renal failure associated with obesity is unknown. Obese Zucker rats received either rimonabant or vehicle for 12 months and were compared to a pair-fed but untreated group of obese rats. Mortality in the obese rats was significantly reduced by rimonabant along with a sustained decrease in body weight, transient reduction in food intake, and an increase in plasma adiponectin. This was associated with significant reduction in plasma total cholesterol, low-density lipoprotein cholesterol/high-density lipoprotein cholesterol ratio, triglycerides, glucose, norepinephrine, plasminogen activator inhibitor 1, and preservation of pancreatic weight and beta-cell mass index. The cannabinoid antagonist attenuated the increase in proteinuria, urinary N-acetylglucosaminidase excretion, plasma creatinine, and urea nitrogen levels while improving creatinine clearance. Renal hypertrophy along with glomerular and tubulointerstitial lesions were reduced by rimonabant. Although the drug did not modify hemodynamics, it normalized the pressor response to angiotensin II. Our study suggests that in a rat model of chronic renal failure due to obesity, rimonabant preserves renal function and increases survival. Topics: Adiponectin; Animals; Body Weight; Disease Models, Animal; Eating; Kidney; Kidney Failure, Chronic; Lipids; Male; Obesity; Piperidines; Pyrazoles; Rats; Rats, Zucker; Receptor, Cannabinoid, CB1; Rimonabant; Survival Analysis | 2007 |
New acetylcholinesterase inhibitor (donepezil) treatment for Alzheimer's disease in a chronic dialysis patient.
The new-generation acetylcholinesterase inhibitor, donepezil, is useful in the treatment of mild-to-moderate Alzheimer's disease. A 72-year-old male chronic hemodialysis patient was diagnosed as having moderate Alzheimer's disease. We administered donepezil at 3 mg/day orally to the patient. After 1 month's treatment, the patient improved to a controllable psychiatric condition and was discharged from the hospital. The 24-hour plasma concentration profile of donepezil following the 3-mg once-daily dose varied from 11.1 to 18.2 ng/ml. The through level of donepezil was reduced from 12.4 to 10.9 ng/ml over a 3-month period. We did not experience any episodes of drug toxicity or adverse effects in this chronic dialysis patient. Donepezil treatment might have a beneficial impact on patients with severe renal dysfunction. Topics: Aged; Alzheimer Disease; Cholinesterase Inhibitors; Donepezil; Humans; Indans; Kidney Failure, Chronic; Male; Piperidines; Renal Dialysis | 2002 |
The choice of anaesthesia course during kidney transplantation.
Topics: Adult; Anesthesia, General; Anesthetics, Inhalation; Anesthetics, Intravenous; Female; Humans; Kidney Failure, Chronic; Kidney Transplantation; Male; Methyl Ethers; Middle Aged; Piperidines; Remifentanil; Sevoflurane | 2000 |
Total intravenous anesthesia with remifentanil, propofol and cisatracurium in end-stage renal failure.
To compare recovery parameters of total intravenous anesthesia (TIVA) with remifentanil and propofol, hemodynamic responses to perioperative events, and pharmacodynamic parameters of cisatracurium in 22 end-stage renal failure and 22 normal renal function patients.. Anesthesia was induced with 2-3 mg x kg(-1) propofol and 1 microg x kg(-1) remifentanil and maintained with 75 microg x kg(-1) x min(-1) propofol and propofol initial infusion of 0.2 microg x kg(-1) x min(-1) propofol. Arterial pressure and heart rate were maintained by remifentanil infusion rate adjustments. The first twitch (T1) was maintained at 25% by an infusion of cisatracurium.. There was no difference in the time to maintenance of adequate respiration, date of birth recollection, first analgesic administration, between the renal failure (4.8+/-2.5, 7.8+/-3.2, 12.3+/-5.3 min respectively) and the control group (5.2+/-2.8, 8.1+/-3.1, 12.7+/-5.5 min): nor were there any differences in the time to 25% T1 recovery, T1 recovery from 25% to 75%, or cisatracurium infusion rate between the renal failure group (32.1 +/-10.8 min, 18.2+/-5.5 min, 0.89+/-0.29 microg x kg(-1) min(-1) respectively) and the control group (35.9 (7.9 min, 18.4+/-3.8 min, 0.95+/-0.22 microg x kg(-1) x min(-1)).. End-stage renal failure does not prolong recovery from TIVA with remifentanil and propofol, or the recovery from cisatracurium neuromuscular block. Topics: Adult; Anesthesia, Intravenous; Anesthetics, Intravenous; Atracurium; Female; Hemodynamics; Humans; Kidney Failure, Chronic; Male; Middle Aged; Neuromuscular Blocking Agents; Piperidines; Propofol; Remifentanil | 1999 |
Drug-related low responsiveness to recombinant human erythropoietin therapy in three patients with end-stage renal disease.
Topics: Aged; Allopurinol; Anemia; Captopril; Drug Interactions; Drug Resistance; Erythropoietin; Female; Humans; Kidney Failure, Chronic; Male; Middle Aged; Piperidines; Recombinant Proteins | 1997 |
Torsades de pointes in two chronic renal failure patients treated with cisapride and clarithromycin.
Patients with chronic renal failure are often on multiple medications and are at risk for the development of adverse effects from drug interactions. Two cases of torsades de pointes that followed the initiation of clarithromycin therapy in patients receiving long-term cisapride therapy are being reported. Elevated cisapride levels while on this combination with return to therapeutic range while on cisapride only was documented in one of the patients. The role of the inhibition of cytochrome P-4503A4 in the occurrence of the arrhythmia is discussed. Topics: Aged; Aged, 80 and over; Anti-Bacterial Agents; Cisapride; Clarithromycin; Drug Interactions; Female; Gastrointestinal Agents; Humans; Kidney Failure, Chronic; Male; Middle Aged; Piperidines; Torsades de Pointes | 1997 |
The pharmacokinetics and pharmacodynamics of remifentanil in volunteers with severe hepatic or renal dysfunction.
Topics: Analgesics, Opioid; Case-Control Studies; Humans; Kidney Failure, Chronic; Liver Diseases; Piperidines; Remifentanil | 1996 |
Pharmacokinetics and pharmacodynamics of roxatidine in patients with renal insufficiency.
1. Roxatidine acetate, a new histamine H2-receptor antagonist, was administered in the evening (75 mg p.o.) to eight patients with renal insufficiency (CLCR 8-17 ml min-1) for 12 days and plasma drug concentrations were measured. 2. Ambulatory intragastric pH was monitored following the last dose and values were compared with those on day 1 when all patients received a placebo. 3. The terminal elimination half-life (mean +/- s.d.) of roxatidine was 10.8 +/- 2.4 h and its oral clearance was 178 +/- 43 ml min-1. 4. During roxatidine treatment gastrin levels increased slightly (median 189 vs 289 ng l-1) and the hyperparathyroid status of the patients was almost normalized (parathyroid hormone levels: median 199 vs 132 ng l-1). 5. The mean latency to a gastric pH of at least 4 was 4.3 +/- 1.4 h. The duration of action (intragastric pH > 4) was 10.6 +/- 3.9 h. 6. As in a pilot study with six patients (CLCR < or = 17 ml min-1) the recommended dosage regimen (75 mg 48 h-1) was unable to maintain gastric pH > 4 for more than 6 h, daily nocturnal intake of 75 mg roxatidine acetate appears appropriate to elevate gastric pH > 4 for a sufficient period of time. Topics: Adult; Drug Administration Schedule; Female; Gastric Acid; Gastric Acidity Determination; Gastrins; Histamine H2 Antagonists; Humans; Kidney Failure, Chronic; Male; Middle Aged; Parathyroid Hormone; Piperidines | 1995 |
Effect of cisapride on gastric emptying in haemodialysis patients.
Topics: Adult; Anti-Ulcer Agents; Cisapride; Female; Gastric Emptying; Humans; Kidney Failure, Chronic; Male; Middle Aged; Piperidines; Renal Dialysis | 1994 |
Effects of vasopressin V1 and V2 receptor antagonists on progressive renal failure in rats.
1. The relationship between vasopressin and the progression of renal failure has been proposed, but not intensively investigated because of a lack of orally available, selective vasopressin antagonists. 2. The effects of novel, orally available vasopressin V1 and V2 receptor antagonists on several indices of the progression of chronic renal failure, i.e. blood pressure, urinary protein excretion, sodium balance and renal histopathology, were investigated by using Wistar rats with adriamycin-induced nephropathy accelerated by deoxycorticosterone acetate-salt hypertension. Groups 2 and 3 were treated with V1 and V2 antagonists, respectively, while the untreated group 1 served as the control. To block the effects of vasopressin efficaciously, V1 and V2 antagonists were simultaneously administered (group 4). 3. At week 6, 2 weeks after the beginning of administration of deoxycorticosterone acetate-salt and vasopressin antagonists after the second injection of adriamycin, V1 and V2 antagonists given either alone or in combination significantly reduced the systolic blood pressure as compared with the control, and urine volume was increased in groups 3 and 4. The proteinuria was also decreased at week 10 in groups 2, 3 and 4. Differences in sodium excretion between all groups were not significant. Histopathological alterations in the kidneys of group 4 were significantly ameliorated. 4. These results suggest that a combination of V1 and V2 antagonists can have therapeutic effects in certain types of chronic renal failure. Topics: Animals; Antidiuretic Hormone Receptor Antagonists; Benzazepines; Kidney; Kidney Failure, Chronic; Male; Piperidines; Quinolones; Rats; Rats, Wistar; Urine | 1994 |
Pharmacokinetics of orally administered levocabastine in patients with renal insufficiency.
The effects of renal insufficiency and hemodialysis on the pharmacokinetics of orally administered levocabastine were studied in six nondialysis patients and in six patients undergoing regular hemodialysis. Levocabastine .5 mg, supplied as a solution, was administered orally to each patient 1 hour after breakfast. Compared with data in healthy volunteers, the oral absorption and disposition of levocabastine were impaired in patients with renal insufficiency. The time to reach peak plasma concentration was increased and the peak plasma concentration was decreased in the patients with renal insufficiency compared with healthy volunteers. Urinary excretion of the unchanged drug, which is the major elimination pathway of levocabastine, was reduced in the patients with renal insufficiency. The decreased urinary excretion most likely contributed to the prolonged half-life (from 36 hours to 95 hours) and increased area under the plasma concentration-time curve (+56%) in the patients with renal insufficiency as compared with the healthy volunteers. Although the 6-hour hemodialysis procedure starting 4 hours after dosing eliminated 10% of the oral dose, the terminal half-life and the total area under the plasma concentration-time curve did not differ significantly between the hemodialysis and the nonhemodialysis patients. In conclusion, the current study showed that the initial oral absorption of levocabastine is reduced and that levocabastine elimination is prolonged in patients with renal insufficiency. Topics: Adult; Female; Half-Life; Histamine H1 Antagonists; Humans; Kidney Failure, Chronic; Male; Middle Aged; Piperidines; Renal Dialysis | 1993 |
A lack of anti-hypertensive effect of an orally effective V1 receptor antagonist, OPC-21268, in end-stage renal disease.
Topics: Adult; Antidiuretic Hormone Receptor Antagonists; Arginine Vasopressin; Blood Pressure; Female; Humans; Hypertension, Renal; Kidney Failure, Chronic; Male; Middle Aged; Piperidines; Quinolones | 1993 |
The effect of OPC-21268, an oral, nonpeptide arginine vasopressin V1 receptor antagonist, on a patient with congestive heart failure.
Topics: Adult; Antidiuretic Hormone Receptor Antagonists; Arginine Vasopressin; Blood Pressure; Diabetes Mellitus, Type 2; Female; Heart Failure; Heart Rate; Humans; Kidney Failure, Chronic; Piperidines; Quinolones | 1993 |
Pharmacokinetics and pharmacodynamics of cisapride in patients undergoing hemodialysis.
Twenty-two patients who were receiving hemodialysis were studied in three groups of eight subjects each to assess the pharmacokinetics during the dialysis-free interval and during hemodialysis treatment and to assess the pharmacodynamics of cisapride. Cisapride and its metabolite norcisapride were measured by use of HPLC and gas chromatography, respectively. The pharmacodynamic effect of cisapride was measured by means of radionuclide gastric emptying. After a single oral dose of 20 mg the terminal half-life of cisapride was 9.6 +/- 3.3 hours, the volume of distribution was 4.8 +/- 3.3 L/kg, the total oral plasma clearance was 380 +/- 161 ml/min, the area under the curve was 1024 +/- 447 ng.hr/ml (mean +/- SD). Norcisapride only could be detected in the dialysate (0.36 +/- 0.067 mg) and was eliminated by a hemodialysis clearance of 34.7 +/- 7.9 ml/min. Cisapride reduced gastric retention from 77.6% +/- 21.1% to 43.7% +/- 18.2% of maximum filling (40 minutes after meals) and normalized the abnormal gastric emptying time in patients receiving dialysis. Cisapride dosage adjustment or substitution after hemodialysis is not necessary. Topics: Adult; Aged; Analysis of Variance; Chromatography, Gas; Chromatography, High Pressure Liquid; Cisapride; Female; Gastric Emptying; Humans; Kidney Failure, Chronic; Male; Middle Aged; Monitoring, Physiologic; Piperidines; Renal Dialysis | 1991 |
Vomiting and chronic renal failure.
Topics: Administration, Oral; Cisapride; Gastroesophageal Reflux; Humans; Infant; Kidney Failure, Chronic; Piperidines; Serotonin Antagonists; Vomiting | 1991 |
Pharmacokinetics of loratadine in patients with renal insufficiency.
The disposition of loratadine, a new orally active histamine H1 receptor antagonist and its primary metabolite descarboethoxyloratadine were characterized in adult volunteers with normal renal function (group I), patients with chronic renal failure, i.e., creatinine clearance less than 30 mL/min (group II), as well as chronic hemodialysis patients (group III). The effect of hemodialysis on the disposition of loratadine and descarboethoxyloratadine was also assessed. Subjects in groups I and II were given a single oral 40 mg dose of loratadine while the patients in Group III received two single 40 mg doses of loratadine (during an interdialytic period and just prior to hemodialysis). Loratadine was rapidly absorbed and the decline of plasma concentrations after attainment of the Cmax was biexponential in all subjects. No significant differences in t1/2 beta were observed between the three groups (8.7 +/- 5.9, 7.6 +/- 6.9, 8.6 +/- 1.6 hrs: in groups I, II, and III, respectively). The apparent total body clearance and apparent volume of distribution of loratadine also did not differ significantly among the three groups. No significant differences in the Cmax or tmax of the metabolite were observed. The metabolite AUC infinity 0 however was significantly greater in group II subjects: (212.4 +/- 37.8, 469.5 +/- 95.4, 325.2 +/- 114.6 ng.hr/mL; groups I, II, and III, respectively). No significant relationship was observed between the terminal elimination half-life of loratadine or descarboethoxyloratadine and creatinine clearance. Hemodialysis augmented endogenous clearance by less than 1%. The disposition of loratadine is not significantly altered in patients with severe renal insufficiency nor is hemodialysis an effective means of removing loratadine or descarboethoxyloratadine from the body. Topics: Adult; Cyproheptadine; Female; Humans; Kidney Failure, Chronic; Loratadine; Male; Middle Aged; Piperidines; Pyridines; Renal Dialysis; Time Factors | 1990 |
Intraperitoneal cisapride for the treatment of diabetics with gastroparesis and end-stage renal disease.
Topics: Adult; Cisapride; Diabetes Mellitus, Type 1; Diabetic Nephropathies; Drug Evaluation; Gastrointestinal Motility; Humans; Infusions, Parenteral; Kidney Failure, Chronic; Male; Myenteric Plexus; Peritoneal Dialysis, Continuous Ambulatory; Piperidines; Stimulation, Chemical | 1990 |
A pharmacokinetic study of roxatidine acetate in chronic renal failure.
The pharmacokinetics of a single oral dose of roxatidine acetate 150 mg were studied in 31 patients with varying degrees of chronic renal failure. The patients were divided into 5 groups according to their creatinine clearance (Clcr): controls (Clcr 94.5 +/- 13.9 ml/min; n = 6); mild chronic renal failure (Clcr 47 +/- 6 ml/min; n = 4); moderate chronic renal failure (Clcr 27.3 +/- 3.1 ml/min; n = 4); severe chronic renal failure (Clcr 12.8 +/- 1.4 ml/min; n = 5) and uraemia (Clcr 6.6 +/- 0.6 ml/min; n = 12). Serum and urine samples were analysed with capillary gas chromatography to measure the salt of the desacetyl metabolite of roxatidine acetate (roxatidine). The terminal half-life was 6.02 +/- 0.31 hours in controls and 7.35 +/- 0.57, 9.3 +/- 0.83, 14.6 +/- 3.7 and 18.10 +/- 2.77 hours, respectively, in the 4 other groups, with progressively decreasing creatinine clearance. Maximum serum concentration and time to maximum serum concentration rose from 816 +/- 75 ng/ml and 2.08 +/- 0.22 hours, respectively, in controls to 1364.7 +/- 156 ng/ml and 4.05 +/- 0.47 hours, respectively, in uraemic patients. Relative total clearance progressively decreased with decreasing glomerular filtration rate (GFR) [from 353.6 +/- 26 ml/min in controls to 90.31 +/- 12.2 ml/min in patients with uraemia]. Renal clearance decreased from a control of 243.9 +/- 56 ml/min to 12.32 +/- 0.18 ml/min in uraemic patients. A linear correlation between creatinine clearance and both relative total clearance and renal drug clearance was noted.(ABSTRACT TRUNCATED AT 250 WORDS) Topics: Adult; Aged; Female; Half-Life; Histamine H2 Antagonists; Humans; Kidney Failure, Chronic; Male; Middle Aged; Piperidines | 1988 |
Lorcainide kinetics and protein binding in patients with end-stage renal disease.
Lorcainide is a new antiarrhythmic drug undergoing clinical investigation for management of patients with ventricular arrhythmias. In this study we investigated the kinetic profile of lorcainide in nine patients with end-stage renal disease. A single intravenous bolus of 100 mg of the drug was injected while the patients were undergoing hemodialysis or during the off-dialysis period. Renal disease did not alter the kinetic properties of lorcainide; the elimination t1/2 beta during hemodialysis was 8.61 +/- 6.35 h, not significantly different from 7.04 +/- 4.12 h off-dialysis. Serum protein binding of lorcainide was investigated in vitro, and the percent binding of lorcainide to serum proteins of normal volunteers and renal or cardiac patients was not significantly different. These data suggest that renal disease should not alter either the dose or the dosing interval of lorcainide. Topics: Adult; Aged; Anti-Arrhythmia Agents; Benzeneacetamides; Blood Proteins; Half-Life; Humans; Kidney Failure, Chronic; Kinetics; Male; Middle Aged; Piperidines; Protein Binding | 1984 |
Proceedings: Studies of experimental chronic renal failure I, Increased permeability of the rat's blood-brain barrier to phenglutarimide hydrochloride.
Topics: Animals; Blood-Brain Barrier; Kidney Failure, Chronic; Male; Permeability; Piperidines; Piperidones; Rats | 1975 |
Minoxidil in severe hypertension with renal failure. Effect of its addition to conventional antihypertensive drugs.
Topics: Adult; Antihypertensive Agents; Blood Pressure; Evaluation Studies as Topic; Female; Follow-Up Studies; Furosemide; Guanethidine; Heart Rate; Humans; Hydralazine; Hydrochlorothiazide; Hypertension; Hypertrichosis; Hypotension, Orthostatic; Kidney Failure, Chronic; Male; Methyldopa; Middle Aged; Minoxidil; Nausea; Piperidines; Pyrimidines | 1973 |
[Study of the association of a diuretic and a sympatholitic agent and its application in the treatment of hypertension].
Topics: Aged; Albuminuria; Amides; Brain; Clopamide; Diuresis; Diuretics; Ergoloid Mesylates; Fundus Oculi; Headache; Humans; Hypertension; Kidney Failure, Chronic; Middle Aged; Obesity; Piperidines; Sodium; Vertigo | 1969 |