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Disposition of Aspirin and Its Metabolites in the Semen of Man
Author(s) -
Kershaw Richard A.,
Mays Dennis C.,
Bianchine Joseph R.,
Gerber Nicholas
Publication year - 1987
Publication title -
the journal of clinical pharmacology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 116
eISSN - 1552-4604
pISSN - 0091-2700
DOI - 10.1002/j.1552-4604.1987.tb03019.x
Subject(s) - semen , aspirin , salicylic acid , chemistry , urine , sperm , semen quality , pharmacology , medicine , chromatography , andrology , biochemistry
The study was undertaken to determine the distribution of aspirin and its metabolites in the semen of humans after an oral dose of aspirin. Each of seven healthy male volunteers was given a single oral dose of 975 mg of aspirin on an empty stomach together with 200 mL of water. Timed samples of blood and semen were obtained from each subject, and the concentrations of aspirin, salicylic acid, and salicyluric acid determined by a specific high‐performance liquid chromatographic assay. The mean peak concentration of aspirin was 6.5 μg/mL in plasma (range, 4.9‐8.9 μg/mL), reached in 26 minutes (range, 13–33 minutes). The half‐life of aspirin was 31 minutes. The concentration ratio of aspirin (semen/plasma) was 0.12 (except for one subject in whom it was 0.025). The mean peak concentration of salicylate in plasma was 49 μg/mL (range, 42–62 μg/mL), reached in 2.5 hours (range, 2.0–2.8 hours). Salicylate distributed rapidly into semen and maintained a concentration ratio (semen/plasma) of 0.15. Salicyluric acid (the glycine conjugate of salicylic acid) was found in the semen. Its high concentration in some subjects' semen (four times the concurrent plasma concentration) was attributed to contamination of semen sample with residual urine, containing salicylurate, in the urethra of those who urinated after the dose of aspirin. Possible side effects of aspirin and salicylate in semen include adverse effects on fertility, male‐mediated teratogenesis, dominant lethal mutations, and hypersensitivity reactions in the recipients.