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Mechanisms of disease: Inborn errors of bile acid synthesis.

Abstract
Inborn errors of bile acid synthesis are rare genetic disorders that can present as neonatal cholestasis, neurologic disease or fat-soluble-vitamin deficiencies. There are nine known defects of bile acid synthesis, including oxysterol 7alpha-hydroxylase deficiency, Delta(4)-3-oxosteroid-5beta-reductase deficiency, 3beta-hydroxy-Delta(5)-C(27)-steroid dehydrogenase deficiency, cerebrotendinous xanthomatosis (also known as sterol 27-hydroxylase deficiency), alpha-methylacyl-CoA racemase deficiency, and Zellweger syndrome (also known as cerebrohepatorenal syndrome). These diseases are characterized by a failure to produce normal bile acids and an accumulation of unusual bile acids and bile acid intermediaries. Individuals with inborn errors of bile acid synthesis generally present with the hallmark features of normal or low serum bile acid concentrations, normal gamma-glutamyl transpeptidase concentrations and the absence of pruritus. Failure to diagnose any of these conditions can result in liver failure or progressive chronic liver disease. If recognized early, many patients can have a remarkable clinical response to oral bile acid therapy.
AuthorsShikha S Sundaram, Kevin E Bove, Mark A Lovell, Ronald J Sokol
JournalNature clinical practice. Gastroenterology & hepatology (Nat Clin Pract Gastroenterol Hepatol) Vol. 5 Issue 8 Pg. 456-68 (Aug 2008) ISSN: 1743-4386 [Electronic] England
PMID18577977 (Publication Type: Journal Article, Research Support, N.I.H., Extramural, Review)
Chemical References
  • Bile Acids and Salts
  • gamma-Glutamyltransferase
Topics
  • Bile Acids and Salts (biosynthesis, blood, genetics)
  • Humans
  • Liver Diseases (genetics, pathology)
  • Metabolism, Inborn Errors (diagnosis, enzymology, genetics)
  • Pruritus
  • gamma-Glutamyltransferase (blood)

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