April 2010 in “Cancer Research” This study found significant upregulation of IDO-1 and IDO-2 in human basal cell carcinomas, suggesting that IDO production may confer immune privilege characteristics to the tumors, potentially impacting their growth.
21 citations
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September 1990 in “Journal of The American Academy of Dermatology” This study reports that six women developed scleroderma while taking L-tryptophan and showed improvement after stopping the supplement and/or starting corticosteroid therapy.
4 citations
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July 1994 in “Clinics in Dermatology” This review discusses the emergence and impact of eosinophilia-myalgia syndrome related to L-tryptophan and offers insights into environmental factors affecting sclerodermatous conditions, with no new research findings presented.
25 citations
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December 2005 in “Molecular Genetics and Metabolism” This study reports that riboflavin may increase enzymatic activity in a GCDH-deficient patient with specific mutations, but doesn't fully normalize urinary organic acid levels.
January 2019 in “Durham e-Theses (Durham University)” This study utilized advanced imaging techniques to quantify hair damage and dye uptake dynamics, revealing that compound penetration in hair is influenced by molecule size and lipophilicity.