Page 38 - 南京医科大学学报自然科学版
P. 38
南京医科大学学报(自然科学版) 第42卷第8期
·1080 · Journal of Nanjing Medical University(Natural Sciences) 2022年8月
·基础研究·
TIR/BB环拟似物AS⁃1对小鼠肾缺血再灌注损伤的保护作用研究
刁爱芹 ,张光际 ,王 卉 ,潘爱萍 ,袁海建 ,李建涛 2*
1
1
1
1
1
泰州职业技术学院医学技术学院,江苏 泰州 225300;南京医科大学病理生理学系,江苏 南京 210029
1 2
[摘 要] 目的:研究TIR/BB环拟似物AS⁃1对小鼠肾脏缺血再灌注损伤的保护作用及机制。方法:雄性C57BL/6小鼠随机分
成4组:假手术组(sham)、肾缺血再灌注组(RIR)、AS⁃1+肾缺血再灌注组(AS⁃1+RIR)、溶剂+肾缺血再灌注组(溶剂+RIR)。采
用夹闭双侧肾动、静脉45 min,再灌注24 h的方法构建肾缺血再灌注损伤模型。AS⁃1+RIR组与溶剂+RIR组在术前30 min按
剂量 50 mg/kg 分别腹腔注射 AS⁃1 和溶剂,再灌注 24 h 后检测肾功能参数、血清炎症因子、凋亡指标及磷酸化 NF⁃κB p65(p⁃
p65)表达水平。结果:与假手术组比较,缺血再灌注组血清肌酐(Scr)、尿素氮(BUN)、TNF⁃α、IL⁃6、p⁃p65、Cleaved caspase3及
+
Bax的表达水平均明显提高(P < 0.01),肾间质CD68 和MPO炎症细胞浸润增多,Bcl⁃2的表达量明显降低(P < 0.01),Bcl⁃2/Bax
的比值也降低。给予 AS⁃1 处理后可以使 Scr、BUN、TNF⁃α、IL⁃6、p⁃p65、Cleaved caspase3、及 Bax 的水平明显降低(P<0.01),
CD68 和MPO炎症细胞浸润减少;Bcl⁃2的表达量升高(P < 0.01),Bcl⁃2/Bax的比值也升高。结论:TIR/BB环拟似物AS⁃1对小鼠
+
肾缺血再灌注损伤有保护作用,其机制可能与其抑制NF⁃κB信号通路的活化,产生抗炎作用和抗凋亡作用有关。
[关键词] TIR/BB环拟似物AS⁃1;肾脏;缺血再灌注损伤
[中图分类号] R329.26 [文献标志码] A [文章编号] 1007⁃4368(2022)08⁃1080⁃07
doi:10.7655/NYDXBNS20220805
Protective effect of TIR/BB⁃loop mimetic AS⁃1 on renal ischemia/reperfusion injury in mice
1
1
1
1
1
DIAO Aiqin ,ZHANG Guangji ,WANG Hui ,PAN Aiping ,YUAN Haijian ,LI Jiantao 2*
2
1 Medical Institute of Taizhou Polytechnic College,Taizhou 225300;Department of Pathophysiology,Nanjing
Medical University,Nanjing 211166,China
[Abstract] Objective:To explore the effect and mechanism of TIR/BB⁃loop mimetic AS⁃1 on renal ischemia/reperfusion injury in
mice. Methods:Male C57BL/6 mice were randomly and equally divided into four groups:sham operation group(Sham group),renal
ischemia/reperfusion injury group(RIR group),AS⁃1+renal ischemia/reperfusion injury group(AS⁃1+RIR group),vehilce+renal
ischemia/reperfusion injury group(vehilce + RIR group). The renal ischemia/reperfusion injury model was constructed by clipping
bilateral renal veins for 45 min and reperfusion for 24 h. The AS⁃1+RIR group and vehilce+RIR group were intraperitoneally injected
with 50 mg/kg AS⁃1 and vehicle 30 minutes before operation. After 24 h reperfusion,renal functional parameters,serum mediator
concentrations,markers of apoptosis indexes and expression of phosphorylated NF⁃κB p65 were determined. Results:Serum creatinine
(Scr)、blood ureanitrogen(BUN)、TNF⁃α、IL⁃6、Cleaved caspase3、Bax and p⁃NF⁃κB p65 were significantly increased after renal IR
compared with the sham group(P<0.01). The expression of Bcl⁃2 and the ratio of Bcl⁃2/Bax were significantly decreased(P < 0.01).
After treatment with AS⁃1,the levels of Scr、BUN、TNF⁃α、IL⁃6、cleaved caspase 3、Bax and P⁃p65 were significantly decreased(P <
0.01),the expression of Bcl⁃2 was increased(P < 0.01),and the ratio of Bcl⁃2/Bax was also increased. Conclusion:TIR/BB loop
analogue AS ⁃ 1 has protective effect on renal ischemia ⁃ reperfusion injury in mice. The mechanism may be related to its anti ⁃
inflammatory and anti apoptotic effects by inhibiting the activation of NF ⁃ κ B signaling pathway.
[Key words] TIR/BB⁃loop mimetic AS⁃1;kidney;ischemia/reperfusion injury
[J Nanjing Med Univ,2022,42(08):1080⁃1086]
[基金项目] 泰州市科技支撑计划(社会发展)项目(TS201912);泰州职业技术学院科研项目(TZYKY⁃18⁃21);泰州职业技术
学院大学生创新创业训练计划项目(YJDC2020001)
∗
通信作者(Corresponding author),E⁃mail:ljt@njmu.edu.cn