The activity of disaccharide enzyme in the epidermis of intestine is letdown, to affect the absorption of lactose and other disaccharide. The disaccharide increasing to raise the osmotic pressure,and cause water diarrhea.
同时小肠粘膜上皮内的双糖酶活性减退,致肠内乳糖及其他双糖吸收障碍,肠道内双糖增多,渗透压升高,水分渗出,导致水样性腹泻。