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. 1984 Apr;17(4):459–464. doi: 10.1111/j.1365-2125.1984.tb02372.x

A simple test for acetylator phenotype using caffeine.

D M Grant, B K Tang, W Kalow
PMCID: PMC1463406  PMID: 6721992

Abstract

A method is presented for the use of caffeine, in the forms commonly ingested by a large proportion of the world's population, to test for the clinically important acetylation polymorphism. Each of 146 subjects provided a spot sample of urine between 2 and 6 h after coffee, tea or cola soft drink consumption, and the molar ratio of 5-acetylamino-6- formylamino -3-methyluracil ( AFMU ) to 1-methylxanthine (1X) was determined by a simple h.p.l.c. assay. The ratio afforded segregation of three apparent modes of acetylation capacity in this population, in concordance with a standard sulphamethazine phenotyping procedure and with other methods using controlled caffeine intake and urine collections. The day-to-day consistency of the method was established in eight selected subjects.

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Selected References

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  1. Carr K., Oates J. A., Nies A. S., Woosley R. L. Simultaneous analysis of dapsone and monoacetyldapsone employing high performance liquid chromatography: a rapid method for determination of acetylator phenotype. Br J Clin Pharmacol. 1978 Nov;6(5):421–427. doi: 10.1111/j.1365-2125.1978.tb04606.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Cartwright R. A., Glashan R. W., Rogers H. J., Ahmad R. A., Barham-Hall D., Higgins E., Kahn M. A. Role of N-acetyltransferase phenotypes in bladder carcinogenesis: a pharmacogenetic epidemiological approach to bladder cancer. Lancet. 1982 Oct 16;2(8303):842–845. doi: 10.1016/s0140-6736(82)90810-8. [DOI] [PubMed] [Google Scholar]
  3. Chapron D. J., Blum M. R., Kramer P. A. Evidence for a trimodal pattern of acetylation of isoniazid in uremic subjects. J Pharm Sci. 1978 Jul;67(7):1018–1019. doi: 10.1002/jps.2600670740. [DOI] [PubMed] [Google Scholar]
  4. Chapron D. J., Kramer P. A., Mercik S. A. Kinetic discrimination of three sulfamethazine acetylation phenotypes. Clin Pharmacol Ther. 1980 Jan;27(1):104–113. doi: 10.1038/clpt.1980.16. [DOI] [PubMed] [Google Scholar]
  5. Drayer D. E., Reidenberg M. M. Clinical consequences of polymorphic acetylation of basic drugs. Clin Pharmacol Ther. 1977 Sep;22(3):251–258. doi: 10.1002/cpt1977223251. [DOI] [PubMed] [Google Scholar]
  6. EVANS D. A., MANLEY K. A., McKUSICK V. A. Genetic control of isoniazid metabolism in man. Br Med J. 1960 Aug 13;2(5197):485–491. doi: 10.1136/bmj.2.5197.485. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. EVANS D. A., WHITE T. A. HUMAN ACETYLATION POLYMORPHISM. J Lab Clin Med. 1964 Mar;63:394–403. [PubMed] [Google Scholar]
  8. Eidus L., Hodgkin M. M. Screening of isoniazid inactivators. Antimicrob Agents Chemother. 1973 Jan;3(1):130–133. doi: 10.1128/aac.3.1.130. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Evans D. A. An improved and simplified method of detecting the acetylator phenotype. J Med Genet. 1969 Dec;6(4):405–407. doi: 10.1136/jmg.6.4.405. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Grant D. M., Tang B. K., Kalow W. Polymorphic N-acetylation of a caffeine metabolite. Clin Pharmacol Ther. 1983 Mar;33(3):355–359. doi: 10.1038/clpt.1983.45. [DOI] [PubMed] [Google Scholar]
  11. Grant D. M., Tang B. K., Kalow W. Variability in caffeine metabolism. Clin Pharmacol Ther. 1983 May;33(5):591–602. doi: 10.1038/clpt.1983.80. [DOI] [PubMed] [Google Scholar]
  12. Lee E. J., Lee L. K. A simple pharmacokinetic method for separating the three acetylation phenotypes: a preliminary report. Br J Clin Pharmacol. 1982 Mar;13(3):375–378. doi: 10.1111/j.1365-2125.1982.tb01388.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. Schröder H. Simplified method for determining acetylator phenotype. Br Med J. 1972 Aug 26;3(5825):506–507. doi: 10.1136/bmj.3.5825.506. [DOI] [PMC free article] [PubMed] [Google Scholar]
  14. Tang B. K., Grant D. M., Kalow W. Isolation and identification of 5-acetylamino-6-formylamino-3-methyluracil as a major metabolite of caffeine in man. Drug Metab Dispos. 1983 May-Jun;11(3):218–220. [PubMed] [Google Scholar]
  15. Weber W. W., Brenner W. A filter paper method for determining isoniazid acetylator phenotype. Am J Hum Genet. 1974 Jul;26(4):467–473. [PMC free article] [PubMed] [Google Scholar]
  16. Wolf H., Lower G. M., Jr, Bryan G. T. Role of N-acetyltransferase phenotype in human susceptibility to bladder carcinogenic arylamines. Scand J Urol Nephrol. 1980;14(2):161–165. doi: 10.3109/00365598009179555. [DOI] [PubMed] [Google Scholar]
  17. du Souich P., McLean A. J., Stoeckel K., Ohlendorf D., Gibaldi M. Screening methods using sulfamethazine for determining acetylator phenotype. Clin Pharmacol Ther. 1979 Dec;26(6):757–765. doi: 10.1002/cpt1979266757. [DOI] [PubMed] [Google Scholar]

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