中国组织工程研究 ›› 2021, Vol. 25 ›› Issue (23): 3666-3671.doi: 10.12307/2021.037

• 组织构建实验造模 experimental modeling in tissue construction • 上一篇    下一篇

银杏酮酯预处理减轻辐射所致模型小鼠的急性肠损伤

左振魁1,韩佳瑞1,计树灵2,贺璐璐2   

  1. 1河南省中医院(河南中医药大学第二附属医院)肛肠科,河南省郑州市   450002;2河南中医药大学,河南省郑州市   450000
  • 收稿日期:2020-07-01 修回日期:2020-07-04 接受日期:2020-08-11 出版日期:2021-08-18 发布日期:2021-01-26
  • 通讯作者: 韩佳瑞,博士,副教授,河南省中医院(河南中医药大学第二附属医院),河南省郑州市 450002
  • 作者简介:左振魁,男,1975年生,黑龙江省牡丹江市人,汉族,黑龙江中医药大学毕业,硕士,副主任医师,主要从事临床结直肠肛门外科方面的研究。
  • 基金资助:
    河南省高等学校重点科研项目计划(16A360007,17A360003),项目负责人:左振魁

Pretreatment with ginkgo biloba extract 50 alleviates radiation-induced acute intestinal injury in mice

Zuo Zhenkui1, Han Jiarui1, Ji Shuling2, He Lulu2   

  1. 1Department of Anorectal Diseases, Henan Province Hospital of TCM (The Second Affiliated Hospital of Henan University of Chinese Medicine), Zhengzhou 450002, Henan Province, China; 2Henan University of Chinese Medicine, Zhengzhou 450000, Henan Province, China
  • Received:2020-07-01 Revised:2020-07-04 Accepted:2020-08-11 Online:2021-08-18 Published:2021-01-26
  • Contact: Han Jiarui, MD, Associate professor, Department of Anorectal Diseases, Henan Province Hospital of TCM (The Second Affiliated Hospital of Henan University of Chinese Medicine), Zhengzhou 450002, Henan Province, China
  • About author:Zuo Zhenkui, Master, Associate chief physician, Department of Anorectal Diseases, Henan Province Hospital of TCM (The Second Affiliated Hospital of Henan University of Chinese Medicine), Zhengzhou 450002, Henan Province, China
  • Supported by:
    Key Scientific Research Project Plan of Henan Provincial Universities, No. 16A360007 and 17A360003 (to ZZK)

摘要:

文题释义:
急性放射性肠损伤:肿瘤患者在接受高剂量的胸部、骨盆、腹部和全身放疗时,肠道对放疗的辐射线高度敏感,这种放疗性辐射线会对肠道造成急性损伤。
肠上皮屏障:完整的肠黏膜上皮细胞以及上皮细胞间通过紧密连接的方式构成的肠黏膜上皮结构。

背景:高剂量的胸部、骨盆、腹部和全身放疗均可能触发急性肠损伤。已有研究表明,银杏酮酯(GBE50)具有抗氧化和抗炎作用,而其对放疗性辐射导致急性肠损伤的作用尚不清楚。
目的:探讨GBE50预处理对辐射导致的急性肠损伤的保护作用和机制。
方法:将27只小鼠随机分为对照组、辐射组、GBE50治疗组,每组9只。采用苏木精-伊红染色观察小肠的病理学改变;TUNEL染色评估隐窝和绒毛中细胞凋亡情况;免疫组化法检测小肠组织中Ki67、嗅质蛋白4和溶菌酶的表达和分布;Western blot法检测小肠组织中闭合蛋白1、闭合小环蛋白1和Lgr5的表达水平;采用试剂盒法检测小肠组织中丙二醛含量和超氧化物歧化酶活性。
结果与结论:①与辐射组相比,GBE50预处理可显著减轻小鼠辐射引起的病理学改变和细胞凋亡,提高辐射后小肠干细胞的再生能力,减轻辐射引起的小鼠肠上皮屏障破坏和氧化应激反应;②结果表明,GBE50预处理可减轻辐射导致的小鼠急性肠损伤。

https://orcid.org/0000-0003-2641-4538 (左振魁) 

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程

关键词: 银杏酮酯, 辐射, 放疗, 急性肠损伤, 细胞凋亡, 隐窝, 绒毛

Abstract: BACKGROUND: Acute intestinal injury may be triggered by high doses of radiotherapy to the chest, pelvis, abdomen, and total body. Previous studies have shown that ginkgo biloba extract 50 (GBE50) has antioxidant and anti-inflammatory effects, but its role in the treatment of radiation-induced acute intestinal injury is yet unclear.
OBJECTIVE: To investigate the protective effect and mechanism of GBE50 against radiation-induced acute intestinal injury in mice. 
METHODS: Twenty-seven mice were randomly divided into control group, radiation group and GBE50 treatment group, with nine rats in each group. Pathological changes of the jejunum were observed by hematoxylin-eosin staining. Apoptosis in crypts and villi was evaluated by TUNEL staining. The expressions and distributions of Ki67, olfactomedin 4 and lysozyme in small intestine tissue were detected by immunohistochemistry. The expressions of Claudin-1, Zonula Occludens-1 and Lgr5 in small intestine tissue were detected by western blot. Malondialdehyde content and superoxide dismutase activity in small intestine tissue were detected by corresponding kit methods. 
RESULTS AND CONCLUSION: Compared with the radiation group, GBE50 pretreatment significantly reduced the pathological changes and cell apoptosis caused by radiation in mice, improved the regeneration ability of intestinal stem cells after radiation, and reduced the destruction of intestinal epithelial barrier and oxidative stress induced by radiation. Therefore, all the results indicate that GBE50 pretreatment can alleviate radiation-induced acute intestinal injury in mice.

Key words: ginkgo biloba extract 50, radiation, radiotherapy, acute intestinal injury, cell apoptosis, crypt, villus

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