Intestinal motility alterations and expression of intercellular adhesion molecule-1 within the rat intestinal muscularis after ischemia reperfusion
10.3760/cma.j.issn.1007-631X.2011.04.020
- VernacularTitle:肠缺血再灌注损伤大鼠小肠运动功能的变化与细胞间黏附分子1表达的关系
- Author:
Jian LIU
;
Zhanchao ZHAO
;
Chengrui XUE
- Publication Type:Journal Article
- Keywords:
Ischemia;
Reperfusion injury;
Disease models,animal;
Movement disorders;
Intercellular adhesion molecule-1
- From:
Chinese Journal of General Surgery
2011;26(4):328-331
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the relationship between the intestinal motility alterations and intercellular adhesion molecule-1 ( ICAM-1 ) expression within the rat intestinal muscularis after ischemia reperfusion. Methods Thirty Wistar rats were divided randomly into IIR, monoclanal anti-ICAM-1 and sham group (n = 10), HR models were established by clamping-releasing the superior mesenteric artery. Gut transit was measured in vivo and intestinal circular muscle contractions were measured in an organ bath. The expression of ICAM-1 mRNA was detected by RT-PCR and immunohistochemisty. Leukocyte infiltration and myeloperoxidase (MPO) activity were quantified in sham and ischemia/reperfusion rats with and without monoclonal anti-ICAM-1 antibody treatment. Results The gut transit of monoclonal anti-ICAM-1 group was improved obviously as compared with IIR group. Circular smooth muscle contractility stimulated by ICAM-1 mRNA expression was 1.69 ± 0. 57 and 1.76 ± 0. 32 within the muscularis; Leukocyte infiltration into the muscularis was (5.6 ±2. 2) c/f and ( 18. 2 ±3. 1 ) c/f. MPO activity was (2. 03 ±0. 56) U/g and (6. 41 ± 1.25 ) U/g respectively. The differences were all statistically significant between IIR and treatment groups ( P ＜ 0. 05 ). The expression of ICAM-1 protein in IIR and anti-ICAM-1 groups was not significantly different (P ＞ 0. 05). Conclusions The up-regulated expression of ICAM-1 after ⅡR injury calls forth local infiltration of PMN within the intestinal muscularis, leading to intestinal motility dysfunction.
