title: Pharmacokinetics and metabolic rates of acetyl salicylic acid and its metabolites in an Otomi ethnic group of Mexico.
abstract: The objective of this study was to determine pharmacokinetic differences of acetyl salicylic acid (ASA) and its metabolites: gentisic acid (GA), salicylic acid (SA) and salicyluric acid (SUA) between Otomies and Mesticians healthy subjects. Design. Ten Otomies and 10 Mesticians were included. After a single dose of aspirin given orally (15 mg/kg), blood and urine samples were collected at different times. Results. Pharmacokinetic parameters of salicylates showed significant differences, except distribution volume of SA, and elimination half-life of SUA. Metabolic rates of ASA showed significant differences for all rates between both groups. On the other hand, percentages of dose excreted were more reduced for SA and SUA for the Otomies than for the Mesticians. Conclusion. Results reflect differences in the hydrolysis way i.e. from ASA to SA and aromatic hydroxylation i.e. from SA to GA, which were slower in Otomies subjects, showing a possible pharmacokinetic differences about the capabilities of ASA biotransformation as a consequence of ethnic differences.
authors.affiliation: Interdisciplinary Centre of Investigation for the Regional Integral Development, National Politechnic Institute, México.
authors.forename: Ismael
authors.initials: I
authors.lastname: Lares-Asseff
authors.forename: Hugo
authors.initials: H
authors.lastname: Juárez-Olguín
authors.forename: Janett
authors.initials: J
authors.lastname: Flores-Pérez
authors.forename: Adrian
authors.initials: A
authors.lastname: Guillé-Pérez
authors.forename: Arturo
authors.initials: A
authors.lastname: Vargas
mesh_terms: D000293:Adolescent; D000328:Adult; D001241:Aspirin / Q000378:metabolism / Q000493:pharmacokinetics*; D005260:Female; D006801:Humans; D007198:Indians, North American; D008297:Male; D008657:Metabolic Clearance Rate / Q000502:physiology; D008800:Mexico / Q000208:ethnology; D018709:Statistics, Nonparametric
chemical_list: D001241:Aspirin