pitolisant has been researched along with Disease-Models--Animal* in 8 studies
1 review(s) available for pitolisant and Disease-Models--Animal
3 trial(s) available for pitolisant and Disease-Models--Animal
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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. 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YAP-Signaling Proteins; Yogurt; Young Adult; Zebrafish; Zebrafish Proteins; Ziziphus | 2016 |
Efficacy of the histamine 3 receptor (H3R) antagonist pitolisant (formerly known as tiprolisant; BF2.649) in epilepsy: dose-dependent effects in the human photosensitivity model.
A new class of drugs, the nonimidazole histamine 3 receptor (H3R) antagonists, has been developed in the past decade for treatment of various brain diseases. Pitolisant is such a drug. We studied the pharmacodynamic effect of pitolisant in patients with epilepsy in early Phase II, using the photosensitivity proof of concept model. A total of 14 adult patients (11 females and 3 males; 5 drug naïve) were studied for three days to evaluate the effect of a single oral dose of pitolisant on EEG photosensitivity ranges. All patients showed repeatedly a generalized photoparoxysmal response (PPR) prior to drug administration on placebo Day 1. A statistically significant suppressive effect (standardized photosensitive response [SPR] reduction as measured with paired t-tests) for 20-, 40-, or 60-mg doses of pitolisant was seen in 9/14 (64%) patients of whom 6/14 (43%) showed abolition of the response to intermittent photic stimulation (IPS). Patients on the highest dosage (60 mg) showed the strongest effect with an effect lasting up to 28 h. Thus, full-scale Phase II studies with this novel H3R antagonist, pitolisant, in patients with epilepsy are warranted. Topics: Administration, Oral; Adult; Animals; Anticonvulsants; Disease Models, Animal; Dose-Response Relationship, Drug; Electroencephalography; Electroshock; Epilepsy, Reflex; Excitatory Amino Acid Agonists; Female; Humans; Kainic Acid; Male; Mice; Piperidines; Time Factors; Young Adult | 2013 |
An inverse agonist of the histamine H(3) receptor improves wakefulness in narcolepsy: studies in orexin-/- mice and patients.
Narcolepsy is characterized by excessive daytime sleepiness (EDS), cataplexy, direct onsets of rapid eye movement (REM) sleep from wakefulness (DREMs) and deficiency of orexins, neuropeptides that promote wakefulness largely via activation of histamine (HA) pathways. The hypothesis that the orexin defect can be circumvented by enhancing HA release was explored in narcoleptic mice and patients using tiprolisant, an inverse H(3)-receptor agonist. In narcoleptic orexin(-/-) mice, tiprolisant enhanced HA and noradrenaline neuronal activity, promoted wakefulness and decreased abnormal DREMs, all effects being amplified by co-administration of modafinil, a currently-prescribed wake-promoting drug. In a pilot single-blind trial on 22 patients receiving a placebo followed by tiprolisant, both for 1 week, the Epworth Sleepiness Scale (ESS) score was reduced from a baseline value of 17.6 by 1.0 with the placebo (p>0.05) and 5.9 with tiprolisant (p<0.001). Excessive daytime sleep, unaffected under placebo, was nearly suppressed on the last days of tiprolisant dosing. H(3)-receptor inverse agonists could constitute a novel effective treatment of EDS, particularly when associated with modafinil. Topics: Animals; Benzhydryl Compounds; Central Nervous System Stimulants; Disease Models, Animal; Female; Histamine Agonists; Humans; Intracellular Signaling Peptides and Proteins; Male; Mice; Mice, Inbred C57BL; Mice, Knockout; Modafinil; Narcolepsy; Neuropeptides; Orexins; Piperidines; Polysomnography; Prospective Studies; Reaction Time; Severity of Illness Index; Single-Blind Method; Sleep Stages; Wakefulness | 2008 |
5 other study(ies) available for pitolisant and Disease-Models--Animal
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Histamine H3 receptor antagonism modulates autism-like hyperactivity but not repetitive behaviors in BTBR T+Itpr3tf/J inbred mice.
Autism spectrum disorders (ASDs) are a group of neurodevelopmental conditions defined by behavioral deficits in social communication and interactions, mental inflexibility and repetitive behaviors. Converging evidence from observational and preclinical studies suggest that excessive repetitive behaviors in people with ASD may be due to elevated histaminergic H3 receptor signaling in the striatum. We hypothesized that systemic administration of pharmacological histamine H3 receptor antagonists would attenuate the expression of repetitive behaviors in the BTBR T+Itpr3tf/J (BTBR) mouse inbred strain, an established mouse model presenting autism-like repetitive behaviors and novelty-induced hyperactivity. We further aimed to investigate whether agonism of the histamine H3 receptor would be sufficient to induce repetitive behaviors in the C57BL/6J control mouse strain.. Different doses of H3 receptor agonists (i.e., (R)-α-methylhistamine and immethridine) and H3 receptor antagonists/inverse agonists (i.e., ciproxifan and pitolisant) were administered via intraperitoneal (i.p.) injection in male mice to characterize the acute effects of these compounds on ASD-related behavioral readouts.. The highly selective H3 receptor agonist immethridine significantly increased the time spent in stereotypic patterns in C57BL/6J mice, but this effect appeared to be driven by general sedative properties of the compound. High doses of pitolisant significantly decreased locomotor hyperactivity in novel environments in BTBR mice, without significant effects on repetitive behaviors.. Based on our findings, we conclude that acute H3 receptor manipulation mainly affected general motor activity levels in novel environments. Small changes in stereotyped behaviors were observed but appeared to be driven by altered general activity levels. Topics: Animals; Autism Spectrum Disorder; Behavior, Animal; Corpus Striatum; Disease Models, Animal; Grooming; Histamine Agonists; Histamine H3 Antagonists; Humans; Hyperkinesis; Imidazoles; Locomotion; Male; Mice; Mice, Inbred C57BL; Piperidines; Receptors, Histamine H3; Social Behavior; Stereotyped Behavior | 2022 |
Pitolisant protects mice chronically treated with corticosterone from some behavioral but not metabolic changes in corticosterone-induced depression model.
As a continuation of our previous experiments, this study aimed to investigate the antidepressant- and anxiolytic-like activity of pitolisant in mice using the corticosterone-induced depression model. The forced swim and the elevated plus maze tests were used as behavioral endpoints. We also studied the effect pitolisant had on the level of acetoacetic acid in the urine as well as the glucose tolerance and body weight of the mice that had been administered corticosterone.. Pitolisant (10 mg/kg b.w.) did not prevent depressive-like behavior in mice during the chronic corticosterone administration but did counteract anxiety-like behavior, whilst fluoxetine (10 mg/kg) was shown to protect the mice from both of these behaviors. None of the treatments that were used in the study showed an effect on the locomotor activity of the mice. Pitolisant did not prevent an increase in acetoacetic acid levels in the urine, nor did it improve glucose tolerance in the tested mice.. Although literature data indicates that there is significant potential for finding an antidepressant and anti-diabetic drug among the histamine H Topics: Animals; Behavior, Animal; Corticosterone; Depression; Disease Models, Animal; Histamine H3 Antagonists; Male; Mice; Piperidines | 2020 |
Nonclinical cardiovascular safety of pitolisant: comparing International Conference on Harmonization S7B and Comprehensive in vitro Pro-arrhythmia Assay initiative studies.
We evaluated the concordance of results from two sets of nonclinical cardiovascular safety studies on pitolisant.. Nonclinical studies envisaged both in the International Conference on Harmonization (ICH) S7B guideline and Comprehensive in vitro Pro-arrhythmia Assay (CiPA) initiative were undertaken. The CiPA initiative included in vitro ion channels, stem cell-derived human ventricular myocytes, and in silico modelling to simulate human ventricular electrophysiology. ICH S7B-recommended assays included in vitro hERG (K. Both sets of nonclinical data consistently excluded pitolisant from having clinically relevant QT-liability or pro-arrhythmic potential. CiPA studies revealed pitolisant to have modest calcium channel blocking and late I. Our findings support the CiPA initiative but suggest that sponsors should consider investigating drug effects on EADs and the use of pro-arrhythmia models when the results from CiPA studies are ambiguous. Topics: Animals; Arrhythmias, Cardiac; Computer Simulation; Disease Models, Animal; Dogs; Electrocardiography; Female; Humans; Ion Channels; Male; Myocytes, Cardiac; Piperidines; Purkinje Fibers; Rabbits; Research Design | 2017 |
The dual-acting H3 receptor antagonist and AChE inhibitor UW-MD-71 dose-dependently enhances memory retrieval and reverses dizocilpine-induced memory impairment in rats.
Both the histamine H3 receptor (H3R) and acetylcholine esterase (AChE) are involved in the regulation of release and metabolism of acetylcholine and several other central neurotransmitters. Therefore, dual-active H3R antagonists and AChE inhibitors (AChEIs) have shown in several studies to hold promise to treat cognitive disorders like Alzheimer's disease (AD). The novel dual-acting H3R antagonist and AChEI 7-(3-(piperidin-1-yl)propoxy)-1,2,3,9-tetrahydropyrrolo[2,1-b]quinazoline (UW-MD-71) with excellent selectivity profiles over both the three other HRs as well as the AChE's isoenzyme butyrylcholinesterase (BChE) shows high and balanced in vitro affinities at both H3R and AChE with IC50 of 33.9nM and hH3R antagonism with Ki of 76.2nM, respectively. In the present study, the effects of UW-MD-71 (1.25-5mg/kg, i.p.) on acquisition, consolidation, and retrieval in a one-trial inhibitory avoidance task in male rats were investigated applying donepezil (DOZ) and pitolisant (PIT) as reference drugs. Furthermore, the effects of UW-MD-71 on memory deficits induced by the non-competitive N-methyl-d-aspartate (NMDA) antagonist dizocilpine (DIZ) were tested. Our results indicate that administration of UW-MD-71 before the test session dose-dependently increased performance and enhanced procognitive effect on retrieval. However neither pre- nor post-training acute systemic administration of UW-MD-71 facilitated acquisition or consolidation. More importantly, UW-MD-71 (2.5mg/kg, i.p.) ameliorated the DIZ-induced amnesic effects. Furthermore, the procognitive activity of UW-MD-71 in retrieval was completely reversed and partly abrogated in DIZ-induced amnesia when rats were pretreated with the centrally-acting H2R antagonist zolantidine (ZOL), but not with the CNS penetrant H1R antagonist pyrilamine (PYR). These results demonstrate the procognitive effects of UW-MD-71 in two in vivo memory models, and are to our knowledge the first demonstration in vivo that a potent dual-acting H3R antagonist and AChEI is effective in improving retrieval processes in the one-trial inhibitory avoidance task and provide evidence to such compounds to treat cognitive disorders. Topics: Animals; Avoidance Learning; Benzothiazoles; Cholinesterase Inhibitors; Disease Models, Animal; Dizocilpine Maleate; Donepezil; Dose-Response Relationship, Drug; Drug Evaluation, Preclinical; Histamine H3 Antagonists; Indans; Male; Memory; Memory Disorders; Nootropic Agents; Phenoxypropanolamines; Piperidines; Pyrilamine; Pyrroles; Quinazolines; Random Allocation; Rats, Wistar; Receptors, Histamine H3 | 2016 |
Brain histamine and schizophrenia: potential therapeutic applications of H3-receptor inverse agonists studied with BF2.649.
BF2.649, a high affinity and selective non-imidazole histamine H(3)-receptor antagonist/inverse agonist, was found to easily enter the brain after oral administration to mice: it displayed a ratio of brain/plasma levels of about 25 when considering either C(max) or AUC values. At low oral doses (2.5-20mg/kg), it elicited in mice a dose-dependent wakening effect accompanied with a shift towards high frequency waves of the EEG, a sign of cortical activation. DOPAC/dopamine ratios were enhanced in the prefrontal cortex but not in the striatum, indicating a selective activation of a sub-population of dopaminergic neurons. BF2.649 showed significant inhibitory activity in several mouse models of schizophrenia. It reduced locomotor hyperactivity elicited by methamphetamine or dizolcipine without significantly affecting spontaneous locomotor activity when administered alone. It also abolished the apomorphine-induced deficit in prepulse inhibition. These observations suggest that H(3)-receptor inverse agonists/antagonists deserve attention as a novel class of antipsychotic drugs endowed with pro-cognitive properties. Topics: Administration, Oral; Animals; Disease Models, Animal; Histamine Antagonists; Mice; Piperidines; Receptors, Histamine H3; Schizophrenia | 2007 |