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Aliment Pharmacol Ther. 1998 Jun;12(6):499-507.

Review article: short chain fatty acids in health and disease.

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Division of Gastroenterology, The University of Texas-Houston Medical School, USA.


Short chain fatty acids (SCFAs) have been the subject of much research over the past few decades. They play a vital role in maintenance of colonic integrity and metabolism. They are produced when dietary fibre is fermented by colonic bacteria. SCFAs are avidly absorbed in the colon, at the same time as sodium and water absorption and bicarbonate secretion. Once absorbed, SCFAs are used preferentially as fuel for colonic epithelial cells and have trophic effects on the epithelium. Clinically, SCFAs have been studied as possible therapeutic agents in diversion colitis, ulcerative colitis, radiation proctitis, pouchitis and antibiotic-associated diarrhoea. Although some promising effects have been observed in uncontrolled studies, a specific therapeutic role for SCFAs remains to be defined. SCFAs may be the effector of the beneficial role of fibre in prevention of colon cancer.

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