Determination of the Acetylator Phenotype and Pharmacokinetics of Some Sulphonamides in Man
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The pharmacokinetics of sulphamethizole, sulphamethoxazole, sulphadiazine, sulphapyridine and sulphadimidine have been studied in man. Renal clearance values of the metabolite N4-acetylsulphonamide are 6 to 20 times higher than those of the corresponding parent compound. The renal clearance of sulphonamides is dependent on the urine flow. N4-Acetylsulphonamide concentration-time profiles for plasma and urine have been constructed for the sulphonamides. The percentage N4-acetylsulphonamide-time profiles for plasma are excellent tools for establishing the acetylator phenotype, while those constructed from urine samples are less useful. Evidence is obtained that sulphadimidine is metabolically processes by 2 different isoenzymes, while sulphadiazine, sulphapyridine and sulphamethoxazole are processes by 1 acetylating isoenzyme. Sulphamethizole is acetylated to very little extent.
Viana P, Meisel L, Lopes A, de Jesus R, Sarmento G, Duarte S Antibiotics (Basel). 2021; 10(8).
PMID: 34438939 PMC: 8388677. DOI: 10.3390/antibiotics10080888.
Kerrn M, Frimodt-Moller N, Espersen F Antimicrob Agents Chemother. 2003; 47(3):1002-9.
PMID: 12604534 PMC: 149286. DOI: 10.1128/AAC.47.3.1002-1009.2003.
van der Ven A, Mantel M, Vree T, Koopmans P, van der Meer J Br J Clin Pharmacol. 1994; 38(2):147-50.
PMID: 7981016 PMC: 1364861. DOI: 10.1111/j.1365-2125.1994.tb04339.x.
Astbury C, Beyeler C, Bird H Rheumatol Int. 1995; 14(6):257-60.
PMID: 7597382 DOI: 10.1007/BF00262093.
Vree T, Hekster Y, Damsma J, Tijhuis M, Friesen W Eur J Clin Pharmacol. 1981; 20(4):283-92.
PMID: 7308281 DOI: 10.1007/BF00618779.