Changes of glucagon-like peptide-2 expression in serum and ileum after colectomy in rats
10.3760/cma.j.issn.2095-428X.2013.11.009
- VernacularTitle:结肠切除术后大鼠血浆及小肠内胰高血糖素样肽-2水平的变化
- Author:
Yu-Long LIU
1
;
Jia WEI
;
Ning LI
;
Lei XIANG
;
Hong-Yi ZHANG
;
Jie-Xiong FENG
Author Information
1. 华中科技大学同济医学院同济医院小儿外科
- Keywords:
Glucagon-like peptide-2;
Colectomy;
Intestinal adaption
- From:
Chinese Journal of Applied Clinical Pediatrics
2013;28(11):828-831
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the effect of colectomy on the expression of glucagon-like peptide-2 (GLP-2) in serum and ileum and compare the changes of GLP-2 after different colectomy in rats.Methods Eighty male or female rats,aging 3-4 months old,were recruited in this study.The rats weight 180-250 g.The 80 rats were evenly and randomly distributed into 4 groups according to the surgical procedures they underwent:control group,in which the rats were not performed any procedures; sham surgery group,in which the rats underwent laparotomy ;left hemicolectomy group,in which the rats were performed left hemicolectomy;and subtotal colectomy group,in which the rats were performed subtotal colectomy.According to execution time,each group had 4 subgroups,including 0 day group,10 day group,20 day group and 30 day group,and 5 rats were included in each subgroup.The whole blood was collected through cardiac puncture.Serum was collected and GLP-2 in serum was determined by enzyme-linked immunosorbent assay.The GLP-2 in ileum was studied by immunohistochemistry staining.The length of villus of ileum was also measured by HE staining.Results The protein of GLP-2 was found in fibroblasts,epithelium and endocrine cells in ileum.Compared with control group and sham surgery group,the expressions of GLP-2 in serum and ileum increased significantly in the rats that underwent left hemicolectomy after surgery(all P ＜ 0.05),and it was increasing with time.The villus length of the rats underwent left hemicolectomy also increased significantly compared with the control group and sham surgery groups 20 days and 30 days after surgery(all P ＜ 0.05).The expressions of GLP-2 in serun and ileum and villus length of the rats with subtotal colectomy were not significantly different from those of the control group and sham surgery group(all P ＞ 0.05).Conclusions The expressions of GLP-2 in serum and ileum are elevated after left hemicolectomy but not in subtotal colectomy,which may be related to the delayed intestinal adaption after colectomy.
