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A comparative study of urinary xanthopterin and neopterin in liver diseases.

By adsorption to activated charcoal, various pteridine derivatives in human urine are oxidized to xanthopterin. Following this oxidation, xanthopterin in urine from healthy subjects and from patients with liver diseases was assayed by high performance liquid chromatography. The mean values for xanthopterin in healthy subjects were 532 +/- 116 mumol/ mol creatinine (mean +/- SD) in males and 585 +/- 153 mumol/ mol creatinine in females; the difference was statistically significant (p < 0.01). Xanthopterin concentrations in patients with liver disease were significantly higher than those in normal subjects. When compared with urinary neopterin, which is a marker of activated cell immunity, xanthopterin was significantly increased even in fatty liver disease. These findings suggest that increased concentrations of urinary xanthopterin in liver diseases reflect not only the status of activated cell-mediated immunity, but also injury to liver cells.[1]

References

  1. A comparative study of urinary xanthopterin and neopterin in liver diseases. Fukuda, A., Mazda, T., Gyure, W.L., Iino, T., Harada, H., Yakura, M., Kamitsukasa, H., Ohbayashi, A., Oka, T., Tsusué, M. European journal of clinical chemistry and clinical biochemistry : journal of the Forum of European Clinical Chemistry Societies. (1993) [Pubmed]
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