实验动物与比较医学 ›› 2018, Vol. 38 ›› Issue (6): 440-445.DOI: 10.3969/j.issn.1674-5817.2018.06.007

• 论著 • 上一篇    下一篇

姜黄素预处理对沙漠干热中暑大鼠回肠、结肠内容物菌群表达量的影响

许琴1, 董翔1, 李建瑛1, 张东辉1, 李佳佳1, 杨亚萍2, 杨秋月2, 是文辉1, 马娜1, 宋来阳1, 刘江伟1   

  1. 1.新疆军区总医院新疆特殊环境医学重点实验室,乌鲁木齐 830000;
    2.新疆农业大学食品科学与药学学院,乌鲁木齐 830052
  • 收稿日期:2018-05-31 出版日期:2018-12-25 发布日期:2021-03-01
  • 作者简介:许琴(1974-),女,博士。研究方向:医学实验动物学。E-mail:xuqin740831@163.com
  • 基金资助:
    新疆自治区自然科学基金项目(No.2015211C241)

The Effect of Curcumin Pretreatment on Flora Expression of Ileum and Colon Contents in Heatstroke Rats with Simulated Desert Environment

XU Qin1, DONG Xiang1, LI Jian-ying1, ZHANG Dong-hui1, LI Jia-jia1, YANG Ya-ping2, YANG Qiu-yue2, SHI Wen-hui1, MA Na1, SONG Lai-yang1, LIU Jiang-wei1   

  1. 1. The Key Laboratory of Special Environmental Medicines of Xinjiang,General Hospital of Xinjiang Military Districts,Urumqi 830000,China;
    2. College of Food Science and Pharmacy,Xinjiang Agricultural University,Urumqi 830052,China
  • Received:2018-05-31 Online:2018-12-25 Published:2021-03-01

摘要: 目的 分析姜黄素预处理对沙漠干热中暑大鼠回肠、结肠菌群表达量的影响。方法 雄性 SD 大鼠50只,随机分为5组:常温常湿空白组、轻度中暑组、中度中暑组、重度中暑组、重度中暑姜黄素干预组,每组10只。姜黄素干预组200 mg/kg,1 mL/100 g体质量灌胃姜黄素混悬液,其余各组灌胃等体积生理盐水,连续7 d。利用西北特殊环境人工实验舱复制不同程度中暑模型,麻醉动物,无菌留取回肠、结肠内容物,PCR法分析各组大鼠回肠、结肠大肠杆菌、肠球菌、双歧杆菌、乳酸杆菌表达量的变化。结果 沙漠干热中暑大鼠回肠、结肠大肠杆菌、肠球菌表达量均显著增加(P<0.05),乳酸杆菌表达量未发生明显变化、双歧杆菌表达量显著降低(P<0.01)。姜黄素干预处理降低了回肠、结肠条件致病菌大肠杆菌、肠球菌表达量,增加了回肠、结肠有益菌双歧杆菌表达量,但对乳酸杆菌作用不明显。结论 姜黄素可能通过提高中暑大鼠回肠、结肠内双歧杆菌的表达量,抑制回肠、结肠内大肠杆菌和肠球菌的增殖,维持肠道菌群稳态,降低肠源性感染的程度,增强大鼠对中暑的耐受力。

关键词: 姜黄素, 中暑, 回肠, 结肠, 肠道菌群

Abstract: Objective To investigate the effect of Curcumin on the flora expression of ileum and colon content in heatstroke rats with simulated dry heat desert environment. Methods Fifty male SD rats were randomly divided into 5 groups, with 10 rats in each group, including normal temperature and humidity group (control group), mild heat stroke group, moderate heat stroke group, severe heat stroke group, and severe heat stroke with Curcumin intervention group. The rats in Curcumin intervention group were intragastrically administrated with 200 mg/kg Curcumin suspension (1 mL/100 g body weight) for 7 successive days and the rest of the groups were continuously irrigated with saline for 7 days. Different degree of heat stroke rat models were established with the northwest special artificial environment laboratory chamber in our laboratory as previous ways. Animals were anesthetized and sterile specimens of ileum and colon contents were frozen in liquid nitrogen, PCR was used to analyze the expression of Escherichia coli, Enterococcus, Lactobacillus, Bacillus bifidus in the rats of each group. Results Heatstroke rats in simulated dry heat desert environment, the Escherichia coli and Enterococcus expression in their ileum and colon were increased significantly (P<0.05), the expression of Lactobacillus did not change significantly, and Bifidobacterium expression was significantly decreased (P<0.01). After intervention with Curcumin, Escherichia coli, Enterococcius expression was significantly decreased (P<0.05), the expression of Lactobacillus did not change significantly, but Bifidobacterium expression was significantly increased (P<0.01). Conclusion Curcumin may improve the expression of bacteria Bifidobacterium in the ileum and colon of heatstroke rats, inhibit opportunistic pathogenic Escherichia coli and enterococci proliferation in ileum and colon, therefore, keep the intestinal flora in homeostasis, reduce the degree of intestinal infection and enhance the rats' tolerance to heatstroke.

Key words: Curcumin, Heat stroke, Ileum, Colon, Intestinal bacteria

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