Abstract
Tryptophan (Trp) metabolism and disposition in relation to alcohol and alcoholism are briefly reviewed. The changes observed could generally be classified into those: (1) exerted by acute or chronic alcohol administration and/or subsequent withdrawal; (2) already present in the absence of alcohol consumption, such as in naive alcohol-preferring animals or in abstinent alcoholics. In normal rats, acute ethanol administration activates liver Trp pyrrolase and exerts a biphasic effect on brain 5-HT (5-hydroxytryptamine or serotonin) synthesis, whereas chronic ethanol administration and subsequent withdrawal exert opposite effects on 5-HT synthesis mediated by corresponding changes in liver Trp pyrrolase activity. A cerebral 5-HT deficiency has been demonstrated in the alcohol-preferring C57BL mouse strain and in a number of alcohol-preferring rat lines, the mechanism of which is understood only in two models; the C57BL mouse strain has a higher liver Trp pyrrolase activity and the P rat line from Indiana has a lower density of serotonergic fibres in cerebral cortex. In man, acute ethanol intake lowers circulating [Trp] and its availability to the brain, almost certainly by activating liver Trp pyrrolase. Some evidence exists for possible inhibition of pyrrolase activity in non-abstinent chronic alcoholics. Evidence in recently abstinent alcoholics suggests that Trp availability to the brain may be impaired and that this may be particularly so in patients with positive family history. Exploration of this latter possibility may be important in understanding the biological basis of predisposition to alcoholism.
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References
Badawy, A. A.-B., 1988, Effects of alcohol on tryptophan metabolism, Biochem. Soc. Trans.16: 254.
Badawy, A. A.-B., and Evans, M., 1976, The role of free serum tryptophan in the biphasic effect of acute ethanol administration on the cencentrations of rat brain tryptophan, 5-hydroxytryptamine and 5-hydroxyindol-3-ylacetic acid, Biochem. J. 160: 315.
Badawy, A. A.-B., Morgan, C. J., Lane, J., Dhaliwal, K., and Bradley, D. M., 1989, Liver tryptophan pyrrolase: a major determinant of the lower brain 5-hydroxytryptamine concentration in alcohol-preferring C57BL mice, Biochem. J.264: 597.
Badawy, A. A.-B., Morgan, C. J., Lane, J., Dhaliwal, K., and Bradley, D. M., 1989, Liver tryptophan pyrrolase: a major determinant of the lower brain 5-hydroxytryptamine concentration in alcohol-preferring C57BL mice, Biochem. J.264: 597.
Badawy, A. A.-B., Punjani, N. F., and Evans, M., 1979, Enhancement of rat brain tryptophan metabolism by chronic ethanol administration and possible involvement of decreased liver tryptophan pyrrolase activity, Biochem J. 178: 575.
Badawy, A. A.-B., Punjani, N. E, Evans, C. M., and Evans M., 1980, Inhibition of rat brain tryptophan metabolism by ethanol withdrawal and possible involvement of the enhanced liver tryptophan pyrrolase activity, Biochem. J.192: 449.
Badawy, A. A.-B., Punjani, N. E, Evans, C. M., and Evans M., 1980, Inhibition of rat brain tryptophan metabolism by ethanol withdrawal and possible involvement of the enhanced liver tryptophan pyrrolase activity, Biochem. J.192: 449.
Branchey L., Branchey M., Shaw S., and Lieber C.S., 1984, Depression, suicide, and aggression in alcoholics and their relationship to plasma amino acids, Psychiatry Res. 12: 219.
Branchey L., and Lieber C.S., 1982, Activity of tryptophan pyrrolase after chronic alcohol administration, Substance Alcohol Actions/Misuse2: 225.
Buydens-Branchey L., Branchey M.H., Noumair D., and Lieber C.S., 1989, Age of alcoholism onset: II. relationship to susceptibility to serotonin precursor availability, Arch. Gen. Psychiat.46: 231.
Cloninger, C. R., Bohman, M., and Sigvardsson, S., 1981, Inheritance of alcohol abuse: cross-fostering analysis of adopted men, Arch. Gen. Psychiat.38: 861.
Eriksson, T., Magnusson, T., Carlsson, A., Hagman, M.,and Jagenburg, R., 1983, Decrease in plasma amino acids in man after an acute dose of ethanol, J Stud. Alcohol44: 215.
Friedman, M. J., Krstulovic, A. M., Severighaus, J. M., and Brown, S. J., 1988, Altered conversion of tryptophan to kynurenine in newly abstinent alcoholics, Biol. Psychiat.23: 89.
Korpi, E. R., Sinclair, J. D., Kaheinen, P., Viitamaa, T., Hellevuo, K., and Kiianmaa, K., 1988, Brain regional and adrenal monoamine concentrations and behavioral responses to stress in alcohol-preferring AA and alcohol-avoiding ANA rats, Alcohol. 5: 417.
LeMarquand, D., Pihl, R. O., and Benkelfat, C., 1994a, Serotonin and alcohol intake, abuse, and dependence: clinical evidence, Biol. Psychiat.36: 326.
LeMarquand, D., Pihl, R. O., and Benkelfat, C., 1994b, Serotonin and alcohol intake, abuse, and dependence: findings of animal studies, Biol. Psychiat.36: 395.
Morgan, C. J., Badawy, A. A.-B., Den Dulk, A., Verbanck, P., and Pelc, I., 1995, Lower serum tryptophan concentrations in alcoholics with positive family history, Alcohol Alcohol. 30: 554 (Abstract).
Murphy, J. M., McBride, W. J., Lumeng, L., and Li, T.-K., 1986, Alcohol preference and regional brain monoamine contents of N/NIH heterogeneous stock rats, Alcohol Drug Res. 7: 33.
Murphy, J. M., McBride, W. J., Lumeng, L., and Li, T.-K., 1987, Contents of monoamines in forebrain regions of alcohol-preferring (P) and -nonpreferring (NP) lines of rats, Pharmacol. Biochem. Behav.26: 389.
Oretti, R. G., Bano, S., Morgan, C. J., Badawy, A. A.-B., Buckland, P., and McGuffin, P., 1995, Prevention of alcohol withdrawal seizures and associated tryptophan metabolic disturbances in rats by cycloheximide, Alcohol Alcohol. 30: 539.
Pietraszek, M. H., Urano, T., Sumioshi, K., Serizawa, K., Takahashi, S., Takada, Y., and Takada, A., 1991, Alcohol-induced depression: involvement of serotonin, Alcohol Alcohol. 26: 155.
Rezvani, A. H., Overstreet, D. H., and Janowsky, D. S., 1990, Genetic serotonin deficiency and alcohol preference in the Fawn Hooded rats, Alcohol Alcohol. 25: 573.
Sellers, E. M., Higgins, G. A., and Sobell, M. B., 1992, 5-HT and alcohol abuse, Trends Pharmacol Sci. 13: 69.
Siegal, F. L., Roach, M. K., and Pomeroy, L. R., 1964, Plasma amino acid patterns in alcoholism: the effects of ethanol loading, Proc. Nat. Acad. Sci. USA51: 605.
Thomson, S. M., Jr., and McMillen, B. A., 1987, Test for decreased serotonin/tryptophan metabolite ratios in abstinent alcoholics, Alcohol4: 1.
Walsh, M. P., Howarth, P. J. N., and Marks, V., 1966, Pyridoxine deficiency and tryptophan metabolism in chronic alcoholics, Am. J. Clin. Nutr.19: 379.
Yoshimoto, K., Komura, S., Kano, A., and Mizohata, K., 1985, Alcohol preference and brain monoamines in five inbred strains of mice. IRCS Med. Sci. 13: 1192.
Zhou, F. C., Bledsoe, S., Lumeng, L., and Li, T.-K., 1991, Immunostained serotonergic fibers are decreased in selected brain regions of alcohol- preferring rats, Alcohol8: 425.
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© 1996 Plenum Press, New York
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Badawy, A.AB. (1996). Tryptophan Metabolism and Disposition in Relation to Alcohol and Alcoholism. In: Filippini, G.A., Costa, C.V.L., Bertazzo, A. (eds) Recent Advances in Tryptophan Research. Advances in Experimental Medicine and Biology, vol 398. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-0381-7_10
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DOI: https://doi.org/10.1007/978-1-4613-0381-7_10
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