醫學文章翻譯節錄

Elevated urinary xanthurenate may be produced from dietary tryptophan even when there is no extra tryptophan challenge. In such cases, vitamin BB insuf­ficiency is significant enough to interfere with even the normal conversion of dietary tryptophan When piglets were used to study vitamin B6 deficiency, urinary levels of kynurcnate and xanthurcnate were elevated early in vitamin B6 deficiency, and continued to rise as the deficiency worsened.

若排除其他色氨酸干擾因素，一般飲食中的色氨酸可導致黃尿酸升高，如此維他命B6不足將嚴重阻礙一般飲食中色氨酸轉換，當以豬隻做研究時，在維生素B6不足發生初期時，尿液中犬尿胺酸及黃尿酸含量便開始升高；若不足程度增加，情況便會加劇。