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Original Article

Postprandial Conjugated and Unconjugated Serum Bile Acid Levels after Proctocolectomy with Ileal Pouch-Anal Anastomosis

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Pages 786-790 | Received 04 Nov 1992, Accepted 05 Apr 1993, Published online: 08 Jul 2009
 

Abstract

Salemans JMJI, Nagengast FM, Tangerman A, van Schaik A, de Haan AFJ, Jansen JBMJ. Postprandial conjugated and unconjugated serum bile acid levels after proctocolectomy with ileal pouch-anal anastomosis. Scand J Gastroenterol 1993;28:786-790.

In patients with ileal pouch-anal anastomosis (IPAA) bile acid reabsorption may be impaired, and stasis may lead to deconjugation and dehydroxylation of bile acids as a result of bacterial overgrowth. We therefore studied fasting and postprandial conjugated and unconjugated serum levels of cholic (CA), chenodeoxycholic (CDCA), and deoxycholic acid (DCA) in 11 patients who underwent proctocolectomy with IPAA and in 11 healthy controls. Fasting levels of conjugated DCA but not CA and CDCA were significantly lower in IPAA patients. Postprandially, conjugated bile acid levels were significantly lower in IPAA patients. Postprandial unconjugated CA levels were significantly higher and CDCA levels tended to be higher in IPAA patients, whereas unconjugated DCA levels were lower in IPAA patients. These data suggest that reabsorption of conjugated bile acids is impaired after IPAA; deconjugation of bile acids may result from bacterial overgrowth secondary to stasis in the pouch; and dehydroxylation of bile acids is decreased after proctocolectomy with IPAA.

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