期刊
BRITISH MEDICAL BULLETIN
卷 92, 期 1, 页码 79-93出版社
OXFORD UNIV PRESS
DOI: 10.1093/bmb/ldp032
关键词
bile acid malabsorption; diarrhoea; SeHCAT; mechanisms
资金
- Bardhan Research & Education Trust
Bile acid malabsorption (BAM) is a syndrome of chronic watery diarrhoea with excess faecal bile acids. Disruption of the enterohepatic circulation of bile acids following surgical resection is a common cause of BAM. The condition is easily diagnosed by the selenium homocholic acid taurine (SeHCAT) test and responds to bile acid sequestrants. Idiopathic BAM (IBAM, primary bile acid diarrhoea) is the condition where no definitive cause for low SeHCAT retention can be identified. Review of PubMed and major journals. Evidence is accumulating that BAM is more prevalent than first thought. Management of chronic diarrhoea involves excluding secondary causes. Treatment of the condition is with bile acid binders. SeHCAT testing is not widely performed, limiting awareness of how common this condition can be. The underlying mechanism for IBAM has been unclear. Increasing awareness of the condition is important. Alternative mechanisms of IBAM have been suggested which involve an increased bile acid pool size and reduced negative feedback regulation of bile acid synthesis by FGF19. New sequestrants are available. Further research into the precise mechanism of IBAM is needed. Improvements in the recognition of the condition and optimization of treatment are required.
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