pectins and Arthritis--Rheumatoid

The constitutional isomers and tautomers of oxadiazolones, as well as their mono- and disulfur analogues, were calculated at the B3LYP/aug-cc-pVDZ level. Four groups of 30 molecules each were considered: oxadiazolone, oxadiazolthione, thiadiazolone, and thiadiazolthione isomers. The compounds were categorized into six groups according to permutations of three heteroatoms in the five-membered ring. Additionally, each of the constitutional isomer was considered to have five tautomers conserving stable five-membered ring: two NH tautomers, two rotameric OH (or SH) forms and one CH. La trombocitosis es un hallazgo casual frecuente en pediatría. En niños, predominan las formas secundarias, siendo las infecciones su causa más prevalente. Se distinguen 4 grados de trombocitosis en función del número de plaquetas; en la forma extrema, se supera el 1.000.000/mm. Endoscopic thrombin injection was similar to glue injection in achieving successful hemostasis of AGVH. However, a higher incidence of complications may be associated with glue injection.

Topics: Acetaminophen; Administration, Oral; Adolescent; Adsorption; Adult; Allyl Compounds; Amylopectin; Amylose; Anaerobiosis; Animals; Anti-Bacterial Agents; Anura; Arginase; Arthritis, Rheumatoid; Asthma; Atmosphere; B-Lymphocytes; Basic Helix-Loop-Helix Transcription Factors; Bioelectric Energy Sources; Biofilms; Biofuels; Biomarkers; Biopolymers; Bioreactors; Brain; Brain Injuries, Traumatic; Breast Neoplasms; Calibration; Carbon Tetrachloride; Caspase 3; Catalysis; Catechin; Cations; Cattle; CD4-Positive T-Lymphocytes; CD8-Positive T-Lymphocytes; Cell Body; Cell Line, Tumor; Cell Plasticity; Chemical and Drug Induced Liver Injury; Chemistry Techniques, Synthetic; China; Chitosan; Chloride Channels; Chromatography, High Pressure Liquid; Chromosome Mapping; Cognition; Cognitive Dysfunction; Cohort Studies; Colitis, Ulcerative; Colloids; Coloring Agents; Congresses as Topic; Correlation of Data; Crystallization; Cyanoacrylates; Cyclohexane Monoterpenes; Cyprinidae; Cytochrome P-450 CYP1A1; Death, Sudden; Dent Disease; Dietary Supplements; Diffusion Magnetic Resonance Imaging; Disease Models, Animal; Disease Progression; Disease Resistance; Disulfides; Drug Monitoring; Drug Stability; Ecotoxicology; Electricity; Electrodes; Endocytosis; Environmental Exposure; Environmental Monitoring; Enzyme Inhibitors; Epithelial-Mesenchymal Transition; Esophageal and Gastric Varices; Esters; Fagopyrum; Female; Ferrosoferric Oxide; Flame Retardants; Flavobacteriaceae; Flow Cytometry; Follow-Up Studies; Formoterol Fumarate; Fusarium; Garlic; Gastrointestinal Hemorrhage; Gene Expression; Genes, Plant; Genetic Markers; Glial Fibrillary Acidic Protein; Gliosis; Global Health; Glutathione Transferase; Glycine max; Gum Arabic; Hemostasis, Endoscopic; Hepatocytes; Hippocampus; Humans; Hydrogen-Ion Concentration; Illinois; Immunoglobulin G; Indoleamine-Pyrrole 2,3,-Dioxygenase; Infant, Newborn; Infant, Small for Gestational Age; Injections, Intraperitoneal; Interleukin-4; Iowa; Iron; Ki-67 Antigen; Kidney; Kinetics; Kynurenine; Lakes; Levofloxacin; Lipid Peroxidation; Lipids; Liver; Liver Cirrhosis, Experimental; Magnetic Fields; Magnetic Iron Oxide Nanoparticles; Male; Manure; Maze Learning; Memory, Short-Term; Metal Nanoparticles; Metals, Heavy; Methane; Mice; Mice, Inbred C57BL; Mice, Knockout; Michigan; Microalgae; Microbial Consortia; Mitochondria; Models, Animal; Models, Chemical; Models, Neurological; Molecular Structure; Molecular Weight; Mutation; Myeloid-Derived Suppressor Cells; NADPH Oxidase 2; Neoplasm Recurrence, Local; Neurites; Neurons; Neuroprotective Agents; NF-kappa B; NIH 3T3 Cells; Nitric Oxide Synthase Type II; Nitrogen; Ohio; Ointments; Ontario; Organelle Biogenesis; Organophosphates; Organophosphorus Compounds; Oxidative Stress; Palladium; Particle Size; Pectins; Phenotype; Phytotherapy; Piperidines; Placenta; Plant Diseases; Plant Extracts; Polymers; Polymorphism, Genetic; Polyphenols; Powders; Pregnancy; Pregnancy Trimester, First; Prospective Studies; Protein Kinase Inhibitors; Protein Structure, Secondary; Proteins; Pyridines; Pyrimidines; Rats, Wistar; Real-Time Polymerase Chain Reaction; Receptors, Aryl Hydrocarbon; Receptors, Chemokine; Receptors, Formyl Peptide; Receptors, Lipoxin; Recovery of Function; Recurrence; Reference Standards; Reference Values; Reproducibility of Results; Respiratory Function Tests; Retrospective Studies; Risk; Sensitivity and Specificity; Sewage; Signal Transduction; Sodium Glutamate; Soil; Solanum tuberosum; Solubility; Solutions; Spectroscopy, Fourier Transform Infrared; Spectrum Analysis; Spermatozoa; STAT3 Transcription Factor; Sulfamethoxazole; Tea; Temperature; Thermodynamics; Thrombin; Treatment Outcome; Triazoles; United States; Viscosity; Waste Disposal, Fluid; Wastewater; Water; Water Pollutants, Chemical; Water Purification; White Matter; Wisconsin; X-Ray Diffraction; Zea mays

Much progress has been made in recent years on the diagnostic value, Ag specificity, and pathogenic roles of autoantibodies correlated to the development of rheumatoid arthritis (RA) in humans. However, carbohydrate Ag-specific autoantibodies that may also play important roles in RA have largely been ignored. In this article, we report that serum levels of Abs capable of recognizing α1,4-polygalacturonic acid [(PGA); major structural component of pectin] strongly correlate with RA in humans. The measurements of PGA-specific Abs (PGA-Abs) in sera are comparable to rheumatoid factors and anti-cyclic citrullinated peptide Abs as serological diagnostic markers for RA in terms of sensitivity and specificity. Immunohistochemical staining results indicate that the PGA-Abs selectively bound synovial membrane cells and chondrocytes in the joints of both humans and rabbits (but not rodents). Induction of PGA-Abs by s.c. immunization of rabbits with carrier protein-conjugated synthetic PGA led to severe inflammatory reactions (synovial hyperplasia, small vessel proliferation, and inflammatory cell infiltration) in the joints. Injection of affinity purified anti-PGA IgG into the synovial cavity of rabbits resulted in accumulation of proinflammatory cytokines such as TNF-α, IL-8, and IL-1β in synovial fluid, as well as local pathological damage. We conclude that the PGA-cross-reactive moiety represents a major autoantigen in the joints and can be targeted by autoantibodies capable of triggering arthritogenic responses in vivo.

Topics: Adult; Animals; Antibody Specificity; Arthritis, Rheumatoid; Autoantibodies; Biomarkers; Chondrocytes; Cross Reactions; Cytokines; Female; Humans; Male; Mice; Mice, Inbred BALB C; Middle Aged; Pectins; Rabbits

The constitutional isomers and tautomers of oxadiazolones, as well as their mono- and disulfur analogues, were calculated at the B3LYP/aug-cc-pVDZ level. Four groups of 30 molecules each were considered: oxadiazolone, oxadiazolthione, thiadiazolone, and thiadiazolthione isomers. The compounds were categorized into six groups according to permutations of three heteroatoms in the five-membered ring. Additionally, each of the constitutional isomer was considered to have five tautomers conserving stable five-membered ring: two NH tautomers, two rotameric OH (or SH) forms and one CH. La trombocitosis es un hallazgo casual frecuente en pediatría. En niños, predominan las formas secundarias, siendo las infecciones su causa más prevalente. Se distinguen 4 grados de trombocitosis en función del número de plaquetas; en la forma extrema, se supera el 1.000.000/mm. Endoscopic thrombin injection was similar to glue injection in achieving successful hemostasis of AGVH. However, a higher incidence of complications may be associated with glue injection.

Topics: Acetaminophen; Administration, Oral; Adolescent; Adsorption; Adult; Allyl Compounds; Amylopectin; Amylose; Anaerobiosis; Animals; Anti-Bacterial Agents; Anura; Arginase; Arthritis, Rheumatoid; Asthma; Atmosphere; B-Lymphocytes; Basic Helix-Loop-Helix Transcription Factors; Bioelectric Energy Sources; Biofilms; Biofuels; Biomarkers; Biopolymers; Bioreactors; Brain; Brain Injuries, Traumatic; Breast Neoplasms; Calibration; Carbon Tetrachloride; Caspase 3; Catalysis; Catechin; Cations; Cattle; CD4-Positive T-Lymphocytes; CD8-Positive T-Lymphocytes; Cell Body; Cell Line, Tumor; Cell Plasticity; Chemical and Drug Induced Liver Injury; Chemistry Techniques, Synthetic; China; Chitosan; Chloride Channels; Chromatography, High Pressure Liquid; Chromosome Mapping; Cognition; Cognitive Dysfunction; Cohort Studies; Colitis, Ulcerative; Colloids; Coloring Agents; Congresses as Topic; Correlation of Data; Crystallization; Cyanoacrylates; Cyclohexane Monoterpenes; Cyprinidae; Cytochrome P-450 CYP1A1; Death, Sudden; Dent Disease; Dietary Supplements; Diffusion Magnetic Resonance Imaging; Disease Models, Animal; Disease Progression; Disease Resistance; Disulfides; Drug Monitoring; Drug Stability; Ecotoxicology; Electricity; Electrodes; Endocytosis; Environmental Exposure; Environmental Monitoring; Enzyme Inhibitors; Epithelial-Mesenchymal Transition; Esophageal and Gastric Varices; Esters; Fagopyrum; Female; Ferrosoferric Oxide; Flame Retardants; Flavobacteriaceae; Flow Cytometry; Follow-Up Studies; Formoterol Fumarate; Fusarium; Garlic; Gastrointestinal Hemorrhage; Gene Expression; Genes, Plant; Genetic Markers; Glial Fibrillary Acidic Protein; Gliosis; Global Health; Glutathione Transferase; Glycine max; Gum Arabic; Hemostasis, Endoscopic; Hepatocytes; Hippocampus; Humans; Hydrogen-Ion Concentration; Illinois; Immunoglobulin G; Indoleamine-Pyrrole 2,3,-Dioxygenase; Infant, Newborn; Infant, Small for Gestational Age; Injections, Intraperitoneal; Interleukin-4; Iowa; Iron; Ki-67 Antigen; Kidney; Kinetics; Kynurenine; Lakes; Levofloxacin; Lipid Peroxidation; Lipids; Liver; Liver Cirrhosis, Experimental; Magnetic Fields; Magnetic Iron Oxide Nanoparticles; Male; Manure; Maze Learning; Memory, Short-Term; Metal Nanoparticles; Metals, Heavy; Methane; Mice; Mice, Inbred C57BL; Mice, Knockout; Michigan; Microalgae; Microbial Consortia; Mitochondria; Models, Animal; Models, Chemical; Models, Neurological; Molecular Structure; Molecular Weight; Mutation; Myeloid-Derived Suppressor Cells; NADPH Oxidase 2; Neoplasm Recurrence, Local; Neurites; Neurons; Neuroprotective Agents; NF-kappa B; NIH 3T3 Cells; Nitric Oxide Synthase Type II; Nitrogen; Ohio; Ointments; Ontario; Organelle Biogenesis; Organophosphates; Organophosphorus Compounds; Oxidative Stress; Palladium; Particle Size; Pectins; Phenotype; Phytotherapy; Piperidines; Placenta; Plant Diseases; Plant Extracts; Polymers; Polymorphism, Genetic; Polyphenols; Powders; Pregnancy; Pregnancy Trimester, First; Prospective Studies; Protein Kinase Inhibitors; Protein Structure, Secondary; Proteins; Pyridines; Pyrimidines; Rats, Wistar; Real-Time Polymerase Chain Reaction; Receptors, Aryl Hydrocarbon; Receptors, Chemokine; Receptors, Formyl Peptide; Receptors, Lipoxin; Recovery of Function; Recurrence; Reference Standards; Reference Values; Reproducibility of Results; Respiratory Function Tests; Retrospective Studies; Risk; Sensitivity and Specificity; Sewage; Signal Transduction; Sodium Glutamate; Soil; Solanum tuberosum; Solubility; Solutions; Spectroscopy, Fourier Transform Infrared; Spectrum Analysis; Spermatozoa; STAT3 Transcription Factor; Sulfamethoxazole; Tea; Temperature; Thermodynamics; Thrombin; Treatment Outcome; Triazoles; United States; Viscosity; Waste Disposal, Fluid; Wastewater; Water; Water Pollutants, Chemical; Water Purification; White Matter; Wisconsin; X-Ray Diffraction; Zea mays

The aim of this study was to develop a pectin-based colon-specific multiparticulate delivery system. Aceclofenac was used as a model drug owing to its potential therapeutic efficacy in rheumatoid arthritis. Pectin microspheres were prepared using emulsion dehydration technique. These microspheres were coated with Eudragit S-100 using solvent evaporation method. The effect of different variables (polymer, emulsifier, stirring speed and stirring time) was investigated in terms of size, surface morphology, entrapment efficiency, in vitro release and in vivo studies. The size of uncoated microspheres ranged from 30 to 55 µm and exhibited 5-40% of drug release in the upper gastrointestinal tract; however, continuous high release of drug was observed at colonic pH. In addition, the release of drug from the microspheres was found to be higher in the presence of rat cecal contents with maximum release at the 8th hour. This is one of the prerequisites for the effective treatment of rheumatoid arthritis, indicating the effect of colonic enzymes on the pectin microspheres. In vivo studies suggest the maintenance of therapeutic concentration of drug for 24 h with significant anti-inflammatory effect. Therefore, these findings clearly suggest that the Eudragit-coated pectin microspheres offer an exciting mode of aceclofenac delivery to colon in the chronopharmacological treatment of rheumatoid arthritis.

Topics: Animals; Anti-Inflammatory Agents, Non-Steroidal; Arthritis, Experimental; Arthritis, Rheumatoid; Calorimetry, Differential Scanning; Coated Materials, Biocompatible; Delayed-Action Preparations; Diclofenac; Drug Carriers; Drug Chronotherapy; Drug Compounding; Drug Stability; Gastric Juice; Intestinal Secretions; Male; Microspheres; Particle Size; Pectins; Polymethacrylic Acids; Rats; Rats, Wistar; Solubility; Spectroscopy, Fourier Transform Infrared; Surface Properties; Tissue Distribution

Topics: Adult; Aged; Alginates; Animals; Arthritis, Rheumatoid; Carcinoma; Cattle; Female; Hodgkin Disease; Humans; Hyaluronic Acid; Hyaluronoglucosaminidase; Hydrogen-Ion Concentration; Leukemia; Male; Middle Aged; Neoplasm Metastasis; Neoplasms; Pectins; Polysaccharides; Synovial Fluid; Time Factors; Viscosity