短链脂肪酸(SCFA)在无反刍动物的大肠经细菌无氧酵解碳水化合物而产生。乙酸、丙酸和丁酸约占 SCFA 的83%。许多研究表明 SCFA 对结肠有营养作用,并对结肠的微循环也有直接影响。人体行Hartmann’s 造口术后,关闭的直肠失去其自然 SCFA源。故这些病人的直肠是研究 SCFA 重要作用的理想活体模型。本研究是对行 Short-chain fatty acids (SCFA) are produced in the absence of ruminal anaerobic glycolysis of carbohydrates in the large intestine of ruminants. Acetic acid, propionic acid, and butyric acid account for about 83% of SCFA. Many studies have shown that SCFA has a nutritional effect on the colon and has a direct effect on the microcirculation of the colon. After the body was lined with Hartmann’s stoma, the closed rectum lost its natural SCFA source. Therefore, the rectum of these patients is an ideal living model for studying the important role of SCFA. This study is right