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Microcalorimetric investigations of drug-albumin interactions. 1984

G H Hardee, and J S Fleitman, and M Otagiri, and J H Perrin

Flow microcalorimetry was used to estimate primary binding constants for drug-albumin interactions. Measurements of heat of reaction at two temperatures illustrated the danger of extrapolation for pharmacokinetic purposes of measurements made at temperatures other than 37 degrees. The method could be used to predict competition between two drugs for a single binding site. Major advantages over spectroscopic techniques included direct determinations of thermodynamic parameters, and the use of physiological concentrations of albumin.

UI MeSH Term Description Entries
D011485 Protein Binding The process in which substances, either endogenous or exogenous, bind to proteins, peptides, enzymes, protein precursors, or allied compounds. Specific protein-binding measures are often used as assays in diagnostic assessments. Plasma Protein Binding Capacity,Binding, Protein
D002151 Calorimetry The measurement of the quantity of heat involved in various processes, such as chemical reactions, changes of state, and formations of solutions, or in the determination of the heat capacities of substances. The fundamental unit of measurement is the joule or the calorie (4.184 joules). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
D003975 Diazepam A benzodiazepine with anticonvulsant, anxiolytic, sedative, muscle relaxant, and amnesic properties and a long duration of action. Its actions are mediated by enhancement of GAMMA-AMINOBUTYRIC ACID activity. 7-Chloro-1,3-dihydro-1-methyl-5-phenyl-2H-1,4-benzodiazepin-2-one,Apaurin,Diazemuls,Faustan,Relanium,Seduxen,Sibazon,Stesolid,Valium
D004364 Pharmaceutical Preparations Drugs intended for human or veterinary use, presented in their finished dosage form. Included here are materials used in the preparation and/or formulation of the finished dosage form. Drug,Drugs,Pharmaceutical,Pharmaceutical Preparation,Pharmaceutical Product,Pharmaceutic Preparations,Pharmaceutical Products,Pharmaceuticals,Preparations, Pharmaceutical,Preparation, Pharmaceutical,Preparations, Pharmaceutic,Product, Pharmaceutical,Products, Pharmaceutical
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000077589 Sulfathiazole A sulfathiazole compound that is used as a short-acting anti-infective agent. It is no longer commonly used systemically due to its toxicity, but may still be applied topically in combination with other drugs for the treatment of vaginal and skin infections, and is still used in veterinary medicine. Benzenesulfonamide, 4-amino-N-2-thiazolyl,Alphadol,N(1)-2-thiazolylsulfanilamide,Norsulfazole,Sulfathiazole Sodium,Sulfathiazole, Monosodium Salt,4-amino-N-2-thiazolyl Benzenesulfonamide,Benzenesulfonamide, 4 amino N 2 thiazolyl
D000418 Albumins Water-soluble proteins found in egg whites, blood, lymph, and other tissues and fluids. They coagulate upon heating. Albumin
D012709 Serum Albumin A major protein in the BLOOD. It is important in maintaining the colloidal osmotic pressure and transporting large organic molecules. Plasma Albumin,Albumin, Serum
D013432 Sulfathiazoles Sulfanilamides consisting of a 4-aminobenzenesulfonamido group at the 2-position of 1,3-thiazole. They are often used as ANTI-INFECTIVE AGENTS.
D013449 Sulfonamides A group of compounds that contain the structure SO2NH2. Sulfonamide,Sulfonamide Mixture,Sulfonamide Mixtures,Mixture, Sulfonamide,Mixtures, Sulfonamide

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