| 硫化氢对大鼠肠缺血∕再灌注损伤中肠黏膜上皮细胞凋亡的影响 |
| |
| 引用本文： | 朱仁武,顾叶春,张煜程,姜阳贵,戴雍月.硫化氢对大鼠肠缺血∕再灌注损伤中肠黏膜上皮细胞凋亡的影响[J].中华全科医学,2016,14(8):1255-1258. |
| |
| 作者姓名： | 朱仁武 顾叶春 张煜程 姜阳贵 戴雍月 |
| |
| 作者单位： | 1. 温州市中西医结合医院普外科, 浙江 温州 325000; |
| |
| 基金项目： | 浙江省医药卫生科研项目(2014-KYB-259) |
| |
| 摘 要： | 目的 研究外源性硫化氢(H2S)对缺血/再灌注中肠黏膜上皮细胞凋亡的影响，并探讨其作用机制。 方法 分离肠系膜上动脉，用血管夹夹闭其根部1 h，随后松夹形成再灌注，建立在体肠缺血/再灌注损伤模型。实验设3个组:假手术对照组(C组)、缺血/再灌注组(I/R组)和缺血/再灌注硫化氢预处理组(NaHS组)，24只健康清洁级SD大鼠随机分到以上各组，每组8只。再灌注2 h检测各组血清和小肠组织上清液超氧化物歧化酶(SOD)、丙二醛(MDA)及谷甘肽过氧化物酶(GSH-Px)水平，HE染色光镜下观察小肠黏膜组织病理学改变，使用原位缺口末端标记(TUNEL)法进行细胞凋亡检测，Western blot法检测caspase-3蛋白的表达情况。 结果 与C组相比，I/R组和NaHS组的小肠黏膜和腺体损伤明显，血清及小肠组织SOD、GSH-Px水平明显降低，细胞凋亡指数(AI)和MDA水平明显升高，回肠组织caspase-3蛋白表达明显增加；而NaHS组和I/R组比较，损伤明显减轻，SOD和GSH-Px水平显著提高，细胞凋亡指数(AI)、MDA水平和caspase-3蛋白的表达水平均显著降低(P＜0.01)。 结论 H2S在一定程度上保护了缺血/再灌注后的肠黏膜组织，减轻了肠黏膜上皮细胞的凋亡，该作用可能与减轻缺血/再灌注过程中的氧化应激反应有关。
|
| 关 键 词： | 硫化氢 肠黏膜 缺血再灌注损伤 凋亡 caspase-3 超氧化物歧化酶 丙二醛 |
| 收稿时间： | 2015-12-22 |
Effects of hydrogen sulfide on apoptosis of intestinal mucosal epithelial cells during ischemia / reperfusion in rats |
| |
| Affiliation: | Department of General Surgery,Wenzhou Hospital of the Integration of Traditional Chinese and Western Medicine,Wenzhou,Zhejiang 325000,China |
| |
| Abstract: | Objective To explore the effects of hydrogen sulfide(H2S) on apoptosis of intestinal mucosal epithelial cells during ischemia/reperfusion in rats and discuss the potential mechanisms. Methods The superior mesenteric artery was separated and blocked from the root using vascular clamp for 1 hour,then remove the clamp to restore blood supply,which accomplish duplicating intestinal ischemia/reperfusion animal model. Twenty-four male SD rats were randomly divided into3 groups with 8 rats in each group:Sham-operation control group(C group),Ischemia/reperfusion group(I/R group) and H2 S pretreatment group(Na HS group). Collect blood and intestinal tissue samples to assay the levels of superoxidase dismutase(SOD),malondialdehyde(MDA) and glutathione peroxidase(GSH-Px) after 2 hour reperfusion. The intestinal mucosal injury and histological alteration under through HE staining was observed. TUNEL method was used to detect apoptosis cells. Caspase-3 protein was measured by Western blot. Results Compared with C group,the damage of small intestinal mucosal tissue and gland was obvious in both I/R group and Na HS group,the levels of SOD and GSH-Px in serum and intestinal tissue was significantly decreased,cell apoptosis index(AI),MDA levels and caspase-3 protein expression were increased significantly. H2 S pretreatment markedly alleviated the pathological damage of small intestinal mucosal tissue,reduced the number of apoptosis cells,decreased the levels of MDA and caspase-3 protein expression,and promoted the levels of SOD and GSH-Px(P < 0. 01),as compared with I/R group. Conclusion H2 S can relieve the injury of intestinal mucosal tissues after ischemia/reperfusion,reduce the intestinal mucosal epithelial cells apoptosis,which maybe relates to its relieving the oxidative stress reaction during ischemia/reperfusion. |
| |
| Keywords: | |
|
| 点击此处可从《中华全科医学》浏览原始摘要信息 |
|
点击此处可从《中华全科医学》下载全文 |
|
