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Decreased plasma half-life of phenylbutazone in workers exposed to chlorinated pesticides

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Summary

The plasma half-life of a single oral dose of phenylbutazone was investigated in 14 men occupationally exposed to a mixture of insecticides, mainly lindane, and in 12 matched controls with significantly lower plasma levels of lindane. — The mean plasma half-life of phenylbutazone was significantly shorter (p<0.05) in the subjects exposed to lindane than in the non-exposed controls, but there was no relationship between the half-life of phenylbutazone and the plasma level of lindane. No correlation was found between the plasma half-life of phenylbutazone and that of antipyrine determined in the same subjects two years previously. If the plasma half-life of phenylbutazone is accepted as an index of the metabolism of this drug, then the shorter half-lives found in the exposed subjects suggest that the metabolism of this compound can be enhanced by such environmental factors as exposure to chlorinated insecticides.

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References

  1. Dale, W.E., Curley, A., Cueto, C.; Jr.: Hexane extractable chlorinated insecticides in human blood. Life Sciences5, 47–54 (1966).

    Google Scholar 

  2. Davies, D.S., Thorgeirsson, S.S.: Mechanism of hepatic drug oxidation and its relationship to individual differences in rates of oxidation in man. Ann. N.Y. Acad. Sci.179, 411–420 (1971).

    Google Scholar 

  3. Jacob, F., Monod, J.: Genetic regulatory mechanism in the synthesis of proteins. J. Molec. Biol.3, 318–356 (1961).

    Google Scholar 

  4. Kolmodin, B., Azarnoff, D.L., Sjöqvist, F.: Effect of environmental factors on drug metabolism. Decreased plasma half-lives of antipyrine in workers exposed to chlorinated insecticides. Clin. Pharmacol. Therap.10, 638–642 (1969).

    Google Scholar 

  5. Kolmodin-Hedman, B., Alexanderson, B., Sjöqvist, F.: Effect of exposure to lindane on drug metabolism: decreased hexobarbital sleeping-times and increased antipyrine disappearance rate in rats. Toxicol. Appl. Pharmacol.20, 299–307 (1971).

    Google Scholar 

  6. Milby, T.H., Samuels, A.J., Ottoboni, F.: Human exposure to lindane: blood lindane levels as a function of exposure. J. Occup. Med.10, 584–587 (1968).

    Google Scholar 

  7. Palmér, L., Kolmodin-Hedman, B.: An improved quantitative gas chromatographic method for analyses of small quantities of chlorinated pesticides in human plasma. Submitted to J. Chromat., 1972.

  8. Poland, A., Smith, D., Kuntzman, R., Jacobsson, M., Conney, A.H.: Effect of intensive occupational exposure to DDT on phenylbutazone and cortisol metabolism in humans. Clin. Pharmacol. Therap.11, 725–733 (1970).

    Google Scholar 

  9. Vesell, E.S., Page, J.G.: Genetic control of the phenobarbital-induced shortening of plasma antipyrine half-lives in man. J. clin. Invest.48, 2202–2208 (1969).

    Google Scholar 

  10. Vesell, E.S., Passananti, G.T., Greene, F.E., Page, J.G.: Genetic control of drug levels and of the induction of drug-metabolizing enzymes in man: individual variability in the extent of allopurinol and nortriptyline inhibition of drug metabolism. Ann. N.Y. Acad. Sci.179, 752–773 (1971).

    Google Scholar 

  11. Whittaker, J.A., Price-Evans, D.A.: Genetic control of phenylbutazone metabolism in man. Brit. med. J.1970 IV, 323–328.

    Google Scholar 

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Kolmodin-Hedman, B. Decreased plasma half-life of phenylbutazone in workers exposed to chlorinated pesticides. Eur J Clin Pharmacol 5, 195–198 (1973). https://doi.org/10.1007/BF00564902

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  • DOI: https://doi.org/10.1007/BF00564902

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