炎调方调控 Rho / ROCK 信号通路对脓毒症急性胃肠 损伤小鼠肠上皮细胞凋亡的研究
作者:
作者单位:

1.河南省中医院/ 河南中医药大学第二附属医院,郑州 450002;2.黄河科技学院,郑州 450000

中图分类号:

R-33


Mechanism of Yantiao Fang regulating the Rho / ROCK signaling pathway in apoptosis of intestinal epithelial cells in mice with acute gastrointestinal injury caused by sepsis
Author:
Affiliation:

1. Henan Provincial Hospital of Traditional Chinese Medicine / Second Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou 450002, China. 2. Yellow River Institute of Science and Technology, Zhengzhou 450000

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    摘要:

    目的 探讨炎调方调控 Rho / ROCK 信号通路对脓毒症急性胃肠损伤小鼠肠上皮细胞凋亡的影响。 方法 取 70 只 BALB / c 小鼠随机分为空白组、假手术组和造模小鼠。 除空白组、假手术组外,各组小鼠均采用盲肠结扎穿孔术( cecum ligation and puncture,CLP)构建脓毒症急性胃肠损伤小鼠模型,将造模成功的小鼠随机分为模型组、炎调方低、中、高剂量组和 ROCK 抑制剂组。 采用 HE 染色观察小鼠回肠组织病理学改变;ELISA 法检测各组小鼠血清 IL-1β、IL-6、TNF-α、IL-10 水平;免疫组织化学检测观察 PCNA、Ki-67 的表达;蛋白印迹法检测回肠组织凋亡指标 cleaved caspase3 蛋白、Bax 蛋白表达;RT-qPCR 检测小鼠回肠组织 ROCK mRNA、MLC mRNA 表达。 结果较空白组和假手术组相比,模型组小鼠的 Chiu’ s 病理评分、促炎介质( IL-1β、IL-6、TNF-α) 水平、cleaved caspase3 蛋白、Bax 蛋白、ROCK mRNA、MLC mRNA 水平升高(P<0. 05) ,而抑炎介质( IL-10)水平和回肠组织中 PCNA、Ki-67 表达降低(P<0. 05) 。 与 模 型 组 比 较,炎 调 方 各 组 随 着 剂 量 增 加,回 肠 组 织 病 理 学 改 变 均 得 到 不 同 程 度 改 善,其Chiu’ s 病理评分、血清中 IL-1β、IL-6、TNF-α 水平、cleaved caspase3 蛋白、Bax 蛋白、ROCK mRNA、MLC mRNA 的表达降低(P<0. 05) ,而 IL-10 水平、回肠组织中 PCNA、Ki-67 表达升高P<0. 05) 。 结论 炎调方可能通过调控 Rho /ROCK 信号通路抑制脓毒症急性胃肠损伤小鼠的肠上皮细胞凋亡,从而具有减轻肠道组织炎症反应,最终达到防止肠黏膜组织损伤的作用。

    Abstract:

    Objective To investigate the effect of Yantiao Fang on apoptosis of intestinal epithelial cells in mice with acute gastrointestinal injury caused by sepsis by regulating the Rho / ROCK signaling pathway. Methods Seventy BALB / c mice were randomly divided into normal, sham, and model groups. Except for normal and sham groups, mice were subjected to cecal ligation and perforation to establish a mouse model of acute gastrointestinal injury caused by sepsis.The mouse models were randomly divided into model, Low, Medium, and High dose of Yantiao Fang, and ROCK inhibitor groups. Histopathological changes of the ileum were observed by HE staining. Serum levels of IL-1β, IL-6, TNF-α, and IL-10 were measured by ELISA. PCNA and Ki-67 expression was detected by immunohistochemistry. Cleaved caspase3 and Bax expression was detected by Western blot. ROCK and MLC mRNA expression in the ileum was measured by RTqPCR. Results Compared with normal and sham groups, Chiu’ s pathological score, proinflammatory factor ( IL-1β, IL6, and TNF-α) levels, cleaved caspase3 and Bax protein expression, and ROCK and MLC mRNA levels were increased in the model group (P<0. 05) . Moreover, anti-inflammatory mediator IL-10 and expression of PCNA and Ki-67 in the ileum were decreased in the model group (P<0. 05) . Compared with the model group, histopathological changes of the ileum in all Yantiao Fang groups were improved by various degrees with the increase in dose. Chiu’ s pathological score, IL-1β, IL6, and TNF-α serum levels, cleaved caspase3 and Bax protein expression, and ROCK and MLC mRNA levels were decreased in Yantian Fang groups ( P< 0. 05) . The IL-10 level and expression of PCNA and Ki-67 in the ileum were increased in Yantian Fang groups ( P< 0. 05) . Conclusions Yantiao Fang may inhibit apoptosis of intestinal epithelial cells in mice with acute gastrointestinal injury due to sepsis by regulating the Rho / ROCK signaling pathway, thereby alleviating intestinal tissue inflammation and ultimately preventing intestinal mucosal tissue injury.

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陈 乾,王 帝,张定一,贾赛蕾,王丽辉,曹玉净,李 鲜,李燕红.炎调方调控 Rho / ROCK 信号通路对脓毒症急性胃肠 损伤小鼠肠上皮细胞凋亡的研究[J].中国比较医学杂志,2024,34(2):16~24.

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  • 收稿日期:2023-04-10
  • 在线发布日期: 2024-05-07
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