能全素对5-FU化疗后大鼠肠屏障功能的影响

目的 研究评价肠内营养对5-FU化疗后大鼠肠屏障功能的影响.方法 30只SD大鼠被随机分为3组:EN组:单纯能全素肠内营养;STD组:5-FU化疗+能全素肠内营养;CHOW组:腹腔注射5-FU化疗+自由进食.化疗前后观察各组大鼠体重、尿乳果糖/甘露醇的变化,并在第8 d时测定门静脉血内毒素水平、门静脉血和淋巴结培养以及取结肠、回肠标本进行组织学病理切片,测定绒毛高度和肠壁厚度.结果 和EN组相比,STD组大鼠体重明显下降、尿乳果糖/甘露醇比值增加,黏膜高度和肠壁厚度也明显降低;EN组大鼠体重、尿乳果糖/甘露醇等各项观察指标略差于CHOW组.结论 5-Fu可引起大鼠肠屏障损害;单纯能全素肠内营养对化疗后大鼠肠屏障的保护作用不如自由进食.

The effects of Nutrison on rat gut barrier after 5-FU chemotherapy

Objective To investigate and assess the effects of nutrison on rat gut barrier after 5-FU chemo-therapy. Methods Thirty male Sprague-Dawley rats were randomly assigned to three groups: EN group: nutrison intestinal nutrition; STD group: nutrison intestinal nutrition + chemotherapy; CHOW group: chow+ chemotherapy. The changies such as weight, lactulose / mannitol of urine samples before and after chem-otherapy were observed. At the 8th day, colon as well as jejunum tissue were also sampled for pathological examination to measure the height of jejunum villi, the thickness of colon and jejunum. Results Compared to EN group, the body weight the height of jejunum mucosa and the thickness of colon / jejunum loss of STD group was significantly decreased, as well as the L/M inceased. The data showed that CHOW group was bet-ter than EN group. Conclusions Intraperitoneal injection of 5-FU increased the intestinal permeability of rats and damaged the function of intestinal barrier. The intestinal mucosal protection effect of nutrison EN in post-chemotherapy rats was weaker than the effect of a free-eating group.