Dose proportionality of bisoprolol enantiomers in humans after oral administration of the racemate. 1994

A Dutta, and R Lanc, and E Begg, and R Robson, and L Sia, and G Dukart, and R Desjardins, and A Yacobi
Medical Research Division, American Cyanamid Company, Pearl River, NY 10965.

Dose proportionality of racemic bisoprolol and the stereoselectivity of its enantiomers were studied after single oral dosing of 5 to 40 mg of bisoprolol hemifumarate in eight healthy male volunteers in an open-label, randomized, four-way cross-over trial. There were dose-proportional increases in mean peak plasma concentration (Cmax) and area under the plasma concentration versus time curve (AUC) values for the racemate and the individual enantiomers. No statistically significant differences were detected between the mean half life (t 1/2), Cmax, and time to reach Cmax (tmax) of the R- and S-isomers at each of the four dose levels studied. These findings support dose proportionality and absence of stereoselective pharmacokinetics for bisoprolol in the dose range studied.

UI MeSH Term Description Entries
D008297 Male Males
D006207 Half-Life The time it takes for a substance (drug, radioactive nuclide, or other) to lose half of its pharmacologic, physiologic, or radiologic activity. Halflife,Half Life,Half-Lifes,Halflifes
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000284 Administration, Oral The giving of drugs, chemicals, or other substances by mouth. Drug Administration, Oral,Administration, Oral Drug,Oral Administration,Oral Drug Administration,Administrations, Oral,Administrations, Oral Drug,Drug Administrations, Oral,Oral Administrations,Oral Drug Administrations
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D013237 Stereoisomerism The phenomenon whereby compounds whose molecules have the same number and kind of atoms and the same atomic arrangement, but differ in their spatial relationships. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed) Molecular Stereochemistry,Stereoisomers,Stereochemistry, Molecular,Stereoisomer
D017298 Bisoprolol A cardioselective beta-1 adrenergic blocker. It is effective in the management of HYPERTENSION and ANGINA PECTORIS. Bisoprolol Fumarate,Bisoprolol Fumarate (1:1) Salt, (+-)-Isomer,Bisoprolol Fumarate (2:1) Salt, (+-)-Isomer,Bisoprolol Hydrochloride,Bisoprolol Methanesulfonate Salt,Bisoprolol, (+-)-Isomer,Bisoprolol, (-)-Isomer,Bisoprolol, Fumarate (1:1) Salt,Bisoprolol, Fumarate (2:1) Salt,CL-297939,Concor,EMD-33512,CL 297939,CL297939,EMD 33512,EMD33512,Fumarate, Bisoprolol,Hydrochloride, Bisoprolol
D018592 Cross-Over Studies Studies comparing two or more treatments or interventions in which the subjects or patients, upon completion of the course of one treatment, are switched to another. In the case of two treatments, A and B, half the subjects are randomly allocated to receive these in the order A, B and half to receive them in the order B, A. A criticism of this design is that effects of the first treatment may carry over into the period when the second is given. (Last, A Dictionary of Epidemiology, 2d ed) Cross-Over Design,Cross-Over Trials,Crossover Design,Crossover Studies,Crossover Trials,Cross Over Design,Cross Over Studies,Cross Over Trials,Cross-Over Designs,Cross-Over Study,Crossover Designs,Crossover Study,Design, Cross-Over,Design, Crossover,Designs, Cross-Over,Designs, Crossover,Studies, Cross-Over,Studies, Crossover,Study, Cross-Over,Study, Crossover,Trial, Cross-Over,Trial, Crossover,Trials, Cross-Over,Trials, Crossover

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