title: Differential effect of type I and type II diabetes on antipyrine disposition in man.
abstract: As the influence of diabetes on drug metabolism in patients is controversial, a study was performed to assess antipyrine (AP) disposition in controlled Type I and Type II diabetics and 2 age- and sex-matched control groups. In Type I diabetics, the half-life of AP was significantly reduced from 12.0 (controls) to 7.9 h, and the volume of distribution (V) was lowered from 733 to 569 ml.kg-1. The resulting plasma clearance and cumulative urinary excretion of AP and its metabolites over 24 h did not differ from controls. In Type II diabetics, the AP half-life (14.5 h) and V (568 ml.kg-1) did not differ from their age- and sex-matched controls (11.1 h and 643 ml.kg-1, respectively), but the plasma clearance of AP was significantly reduced by 30%, and urinary excretion was significantly reduced to 44% of controls. The differential effects of Types I and II diabetes on AP metabolism may explain, at least in part, the controversial data in the literature.
authors.affiliation: Department of Clinical Pharmacology University of Berne, Switzerland.
authors.forename: T
authors.initials: T
authors.lastname: Zysset
authors.forename: H
authors.initials: H
authors.lastname: Wietholtz
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000983:Antipyrine / Q000378:metabolism* / Q000493:pharmacokinetics; D001711:Biotransformation; D003922:Diabetes Mellitus, Type 1 / Q000378:metabolism*; D003924:Diabetes Mellitus, Type 2 / Q000378:metabolism*; D005260:Female; D006207:Half-Life; D006801:Humans; D008297:Male; D008875:Middle Aged
chemical_list: D000983:Antipyrine