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Bacterial Change in Mental Disorder: The Bacterial Digestion of Tyrosine

Published online by Cambridge University Press:  19 February 2018

F. H. Stewart
F. H. Stewart*
Affiliation:
Cheddleton Mental Hospital
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Extract

In a previous paper (Journ. Ment. Sci., April, 1928, p. 269) the writer has pointed out that a culture tube of tyrosine bouillon, if inoculated from the fæces of a healthy person, incubated for forty-eight hours and distilled, will be found to contain not more than 0.008% of phenol, or at most 0.015%. If, on the other hand, similar cultures are made from mental patients they will contain 0.02 to 0.03% of phenol in one half of the persons examined. In all these cases the phenol is formed by the action of bacteria on the tyrosine in an alkaline medium. The most important phenol-producing bacterium in the insane is B. Morgani, which can be demonstrated in 25% of acute cases, while B. phenologenes, Berthelot, is found in a smaller number. The paper referred to dealt with the toxic effects of B. Morgani and the results of vaccination with this organism. In the present paper another aspect of the matter will be considered, namely, the production of tyramine from tyrosine by intestinal bacteria, and whether poisoning by this substance may be a cause of mental disturbance.

Type
Part I.—Original Articles
Information
Journal of Mental Science , Volume 74 , Issue 306 , July 1928 , pp. 416 - 424
Copyright
Copyright © Royal College of Psychiatrists, 1928 

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References

Barger, G., The Simpler Natural Bases. Tyramine and Phenol: Berthelot, 1918, Ann. de l'Institut Pasteur, xxxii, p. 17.Google Scholar
Berthelot, and Bertrand, , 1911, C.R. Soc. Biol. Google Scholar
Dobrowotski, , 1910, Ann. Inst. Past., xxiv, p. 595.Google Scholar
Ewins, and Laidlaw, , 1910, Journ. Physiol., p. 78.CrossRefGoogle Scholar
Frohlich, and Pick, , 1913, Arch. of Exp. Path. and Pharm., lxxi, p. 23.Google Scholar
Harvey, W. H., 1911, Journ. Path. and Bact., xvi, p. 95.CrossRefGoogle Scholar
Hanke, and Koessler, , 1919, Journ. Biol. Chem., pp. 497 and 521.CrossRefGoogle Scholar
Idem. , 1922, ibid., p. 131.Google Scholar
Idem. , 1923, ibid., pp. 879 and 889.Google Scholar
Idem. , 1924, ibid., pp. 835 and 867. Ergot : Robertson and Ashby, 1928, Brit. Med. Journ., i, p. 302.Google Scholar
Histamine, : Bertrand and Berthelot, 1913, Lancet, lxxxiv, p. 523.Google Scholar
Dale, and Laidlaw, , 1910, Journ. Physiol., xli, p. 318.CrossRefGoogle Scholar
Eustis, , 1912, A., Amer. Journ. Med. Sci., cxlvi, p. 862, quoted by Martindale, and Westcott, , Extra Pharmacopœia, 1920, p. 399.CrossRefGoogle Scholar
Meakins, and Harington, , 1923, Journ. Phar. Exp. Therap., xx, p. 45.Google Scholar
Mellanby, , 1911, Lancet, ii, p. 8.CrossRefGoogle Scholar
Mellanby, and Twort, , 1912, Journ. Physiol., xlv, p. 52.Google Scholar
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