title: The effect of hydroxy metabolites of clarithromycin to the pharmacokinetic parameters, and determination of hydroxy metabolites ratio of clarithromycin.
abstract: Clarithromycin is a broad-spectrum macrolide antibacterial agent which is effective both in vitro and in vivo against the major pathogens responsible for respiratory tract infections. Clarithromycin's principal metabolite is 14-(R) hydroxyclarithromycin (14-OH-clarithromycin). The other metabolite, namely 14-(S) hydroxyclarithromycin is inactive. The purpose of this study was to show the hydroxylation of CLA at the 14 position to form the R and S epimers and to determine the metabolic ratio of 14ROHCLA/CLA and 14SOHCLA/CLA for understanding the metabolization. This study suggest that in healthy adults, the individual variations in therapeutic responses to clarithromycin can be assumed by taking the drug and its metabolites ratios. Clarithromycin and metabolites ratios increase during metabolization.
authors.affiliation: Yeditepe Health Service, GLP Laboratory and GCP Clinics, Acibadem, Istanbul, Turkey.
authors.forename: Durisehvar
authors.initials: D
authors.lastname: Unal
authors.forename: Aysen
authors.initials: A
authors.lastname: Fenercioglu
authors.forename: Latif
authors.initials: L
authors.lastname: Ozbay
authors.forename: Banu
authors.initials: B
authors.lastname: Ozkirim
authors.forename: Dilek
authors.initials: D
authors.lastname: Erol
mesh_terms: D000293:Adolescent; D000328:Adult; D000900:Anti-Bacterial Agents / Q000378:metabolism*; D017291:Clarithromycin / Q000031:analogs & derivatives* / Q000378:metabolism*; D006801:Humans; D006900:Hydroxylation; D008297:Male; D008875:Middle Aged; D013237:Stereoisomerism; D055815:Young Adult
chemical_list: D000900:Anti-Bacterial Agents; C056228:14-hydroxyclarithromycin; D017291:Clarithromycin