Diagnosis of cerebrotendinous xanthomatosis (CTX) and effect of chenodeoxycholic acid therapy by analysis of urine using capillary gas chromatography

Add time:07/23/2019    Source:sciencedirect.com

By means of capillary gas chromatography urine samples of patients with cerebrotendinous xanthomatosis (CTX) were investigated before and during treatment by oral administration of chenodeoxycholic acid. The occurrence of various conjugated bile alcohols, presumably glucuronides, was demonstrated, the major compound being 5β-cholestane-3α,7α,12α,23ξ,25-pentol. In the bile acid fraction norcholic acid and hydroxycholic acid were shown to be present in considerable amounts. In this way the presence of CTX can be demonstrated conclusively. After chenodeoxycholic acid therapy the excretion of both abnormal bile acids as well as of bile alcohols rapidly decreased within a few weeks, showing the effectiveness of the treatment. By early discovery and subsequent therapy it may be possible to prevent the onset of the detrimental symptoms such as mental deficiency, caused by the accumulation of cholestanol and cholesterol in CTX patients.

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