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Effect of Short-Chain Fatty Acids on Colonic Function and Structure

Division of Gastroenterology and Nutrition, Albert Einstein Medical Center and Temple University School of Medicine, Philadelphia, Pennsylvania

Gary M. Levine, MD

Division of Gastroenterology and Nutrition, Albert Einstein Medical Center and Temple University School of Medicine, Philadelphia, Pennsylvania

Short-chain fatty acids (SCFA), fermentation products of fiber, are believed to play a role in intestinal adaptation. Although the administration of fiber or the infusion of SCFA has been shown to cause colonic growth, studies have been done primarily in enterally fed animals. In addition, the effects of SCFA on absorptive function have not been determined. Adult male rats were maintained on total parenteral nutrition (TPN) and, in addition, received either 150 mmol/L of saline or 150 mmol/L of SCFA mixture (60:25:15, acetate:propionate:butyrate) into the proximal colon. One week later, the in vivo absorption of water, electrolytes, and 20 mmol/ L of butyrate was measured. After the rats were killed, parameters of colonic mass were determined. SCFA infusion into the colon had no significant effect on absorptive function. However, significantly greater mucosal height (p < .01) and mucosal DNA (p < .05), were observed. Although SCFA has a modest effect on colonic structure, they do not influence absorptive function in TPN rats. (Journal of Parenteral and Enteral Nutrition 16:1-4, 1992)

Journal of Parenteral and Enteral Nutrition, Vol. 16, No. 1, 1-4 (1992)
DOI: 10.1177/014860719201600101


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