Effect of Qingchang Suppository on intestinal permeability in rats with ulcerative colitis / 中国中西医结合杂志

ABSTRACT

<p><b>OBJECTIVE</b>To observe the effect of Qingchang Suppository (QCS, a Chinese herbal preparation) on intestinal permeability in rat ulcerative colitis (UC) model induced by trinitrobenzene sulforic acid, and to explore the mechanism of QCS for healing the ulceration.</p><p><b>METHODS</b>Labelled by FITC-dextran 4 000 (FD-4), the permeability of colonic membrane in UC rat and effect of QCS on it were observed in vitro and in vivo.</p><p><b>RESULTS</b>In vivo study showed that the colonic FD-4 permeability of UC rat was increased significantly, being 6-fold of normal in 30 min. After treated with QCS of high/moderate dosage, it significantly attenuated to different degrees (P < 0.05). FD-4 permeability coefficient (Papp) determination in vitro showed that Papp in model rats increased to (5.001 +/- 1.316) x10(-8) cm/s in 120 min, being 2.5-fold of control; and which could be decreased by high/moderate dose QCS effectively (P < 0.05).</p><p><b>CONCLUSION</b>QCS could suppress the high colonic permeability in UC model rats, improve the barrier function of intestinal membrane and promote the healing of ulceration. Qingchang Suppository; ulcerative colitis; intestinal permeability in UC model rats, improve the barrier function of intestinal membrane and promote the healing of ulceration.</p>