Summary
The urinary excretion of nicotine and its metabolites, nicotine-l’-N-oxide and cotinine, were determined for 40 pregnant and 30 non-pregnant smokers. The pregnant subjects participated in a longitudinal study over their last trimester in order to describe variations in nicotine metabolism with gestational age. No significant relationship was found between the level of excretion of the nicotine metabolites and infant birthweight for the pregnant smokers; nor was evidence found for the preferential accumulation of cotinine compared to nicotine-l’-N-oxide for pregnant compared to non-pregnant smokers. The longitudinal study demonstrated a significant drop in the nicotine-l’-N-oxide excretion level over the 29th to the 32nd weeks of gestation for all six subjects examined over this period.
Tests demonstrated that this decrease in the nicotine-l’-N-oxide level was not due to an unusual decomposition effect in the urine.
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References
Davies D.P., Gray O.P., Ellwood P.C. and Abernethy M. (1976): Cigarette smoking in pregnancy: Associations with maternal weight gain and fetal growth. Lancet,1, 385–387.
Rush D. (1974): Examination of the relationship between birth weight, cigarette smoking during pregnancy and maternal weight gain. J. Obst. and Gynacol. of Brit. Commonwealth,81, 746–752.
Simpson W.J. (1957): A preliminary report on cigarette smoking and the incidence of prematurity.Am. J. Obs., 73, 808–815.
Rush D. and Kass E.H. (1972): Maternal smoking: a reassessment of the association with perinatal mortality.Am. J. of Epiderm, 96, 183–196.
Larson P.S., Haag H.B. and Silvette H. (1961): InTobacco, Experimental and Clinical Studies. Williams and Wilkins Co., Baltimore.
Beckett A.H., Gorrod J.W. and Jenner P. (1971a): The effect of smoking on nicotine metabolismin vitro in humans.J. Pharm. Pharmac., 23, 62–67.
Gorrod J.W. and Jenner P. (1975): InEssays in Tixocology, 6, Ed. by Hayes W.J. Academic Press, New York.
Gorrod J.W., Jenner P., Keysell G. and Beckett A.H. (1971): Selective inhibition of alternative oxidative pathways of nicotine metabolismin vitro.Chem.-Biol, Interact, 3, 269–270.
Gorrod J.W., Jenner P., Keysell G.R. and Mikhael B.R. (1974): Oxidative metabolism of nicotine by cigarette smokers with cancer of the urinary bladder.J. Nat. Cancer Inst., 52, 1421–1424.
Dean M.E. and Stock B.H. (1975): Hepatic microsomal metabolism of drugs during pregnancy in the rat.Drug Metab. Disp., 3, 325–331.
Tjalve H., Hansson E. and Schmiterlow C.G. (1965): Passage of14C-Nicotine and its metabolites into mice foetuses and placentae.Acta Pharmac. Toxical, 26, 539–555.
Fabro S. (1973): InFetal Pharmacology. Ed. by L. Boreus. Raven Press, New York.
Beckett A.H. and Triggs E.J. (1966): Determination of nicotine and its metabolite, cotinine, in urine by gas chromatography.Nature, 211, 1415–1417.
Beckett A.H., Gorrod J.W. and Jenner P. (1971b): The analysis of nicotine-l’-N-oxide in urine, in the presence of nicotine and cotinine, and its applications to the study of in vivo nicotine metabolism in man.J. Pharm. Pharmac., 23, 55S-61S.
Taylor E.C. and Boyer N.E. (1959): Pyridine-1 -oxides. IV. Nicotine-1-oxide, nicotine-1’oxide and nicotine-1,1’-oxide.J. Org. Chem., 24, 275–277.
Bowman E.R. and McKennis Jr. H. (1959): (−)-Cotinine.Biochem. Prep., 10, 31–33.
Haag H.B. and Larson P.S. (1942): Studies on the fate of nicotine in the body I. The effect of pH on the urinary excretion of nicotine by tobacco smokers.J. Pharm. Exp. Ther., 76, 235–239.
Zabriskie J.R. (1963): Effect of cigarette smoking during pregnancy. Study of 2,000 cases.Obst. Gyn., 21, 405–411.
Hobkirk R., Blahey P.R., Alfheim A., Raeside J.I. and Joron G.E. (1960): Urinary estrogen excretion in normal and diabetic pregnancy.J. Clin. Endo. Metab., 20, 805–813.
Hughes E.C., Lloyd C.W., Jones D., Lobotsky J., Rienzo J.S. and Avery G.M. (1954): Some recent observations concerning the toxemias of pregnancy.Amer. J. Obs. and Gynacol., 67, 782–800.
Whitfield C.R., Chan W.H., Sproule W.B. and Stewart A.D. (1972): Amniotic fluid lecithin: Sphingomyelin ratio and fetal lung development.Brit. Med. J., 2, 85–86.
Skryten A., Johnson P., Samside G. and Gustafson A. (1976): Studies in diabetic pregnancy. I. Serum lipidsActa Obstret. Gynacol., 55, 211–215.
Robinson D.S. (1970): InComprehensive Biochemistry, 18, Ed. by Florkin M. and Stotz E.H., Elsevier, Amsterdam.
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Klein, A.E., Gorrod, J.W. The metabolism of nicotine in cigarette smokers during pregnancy. European Journal of Drug Metabolism and Pharmacokinetics 3, 87–93 (1978). https://doi.org/10.1007/BF03189375
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DOI: https://doi.org/10.1007/BF03189375