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  • Title: Tryptophan metabolism in animals with dermatitis. I) In Rats.
    Author: De Antoni A, Baccichetti F, Costa C, Vanzan S, Allegri G.
    Journal: Boll Soc Ital Biol Sper; 1979 Sep 15; 55(17):1707-13. PubMed ID: 550869.
    Abstract:
    Tryptophan metabolism "via kynurenine" after load of amino-acid has been studied in urine of rats before and after induction of experimental light-conditioned dermatitis with psoralen. Tryptophan load in animals during the acute phase of dermatitis (one day after induction) causes a markedly increased urinary excretion of total metabolites in comparison with that obtained before dermatitis. After six days of dermatitis, when the skin damage was in repair, the excretory values after tryptophan load in rats are only slightly increased indicating that the metabolic disturbance is correlated with the skin damage.
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