Inhibition of glycogen synthase kinase 3β attenuates cold ischemia/reperfusion injury in rat kidney graft

Shuai SU; Qilin ZHANG; Yunlong WANG; Ruitu RAN; Zhikang YIN

doi:10.16016/j.1000-5404.201803147

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Inhibition of glycogen synthase kinase 3β attenuates cold ischemia/reperfusion injury in rat kidney graft

Military Medicine | 更新时间：2026-01-09

- Inhibition of glycogen synthase kinase 3β attenuates cold ischemia/reperfusion injury in rat kidney graft
- Journal of Third Military Medical University Vol. 40, Issue 18, Pages: 1653-1662(2018)
- 作者机构：
  
  400016 重庆，重庆医科大学附属第一医院泌尿外科
- 作者简介：
- 基金信息：
  
  the Basic and Frontier Science Research Project of Chongqing Science and Technology Commission(CSTC2014jcyjA0210)
- DOI：10.16016/j.1000-5404.201803147
  CLC： R617;R692;R977.3
- Received：20 March 2018，
  
  Revised：2018-05-08，
  
  Published：30 September 2018
- 稿件说明：
移动端阅览
Shuai SU, Qilin ZHANG, Yunlong WANG, et al. Inhibition of glycogen synthase kinase 3β attenuates cold ischemia/reperfusion injury in rat kidney graft[J]. Journal of Third Military Medical University, 2018, 40(18): 1653-1662.
DOI：

Shuai SU, Qilin ZHANG, Yunlong WANG, et al. Inhibition of glycogen synthase kinase 3β attenuates cold ischemia/reperfusion injury in rat kidney graft[J]. Journal of Third Military Medical University, 2018, 40(18): 1653-1662. DOI： 10.16016/j.1000-5404.201803147.

摘要

目的

分析GSK-3β抑制剂TDZD-8对大鼠肾移植缺血再灌注损伤(ischemia reperfusion injury

IRI)中NF-κB的活化、炎症反应和氧化应激的作用。

方法

选用250～280 g雄性SD大鼠，建立大鼠肾移植模型和冷IRI模型。肾移植模型：将大鼠分为假手术组、肾移植组、肾移植+5 mg/kg TDZD-8组和肾移植+1 mg/kg TDZD-8组，每组6只；冷缺血再灌注模型：将大鼠分为假手术组、IRI组、IRI+5 mg/kg TDZD-8组和IRI+1 mg/kg TDZD-8组，每组6只。采用Western blot和IHC检测两个模型各组大鼠p-RelA/p65、p-GSK-3β、GSK-3β、RelA/p65变化；ELISA检测血清TNF-α、IL-1β、SOD和MDA的变化；HE染色观察肾脏的病理改变，进行肾小管坏死评分；检测血清肌酐和尿素氮。

结果

与假手术组相比，肾移植组或冷IRI组血清肌酐、尿素氮、TNF-α、IL-1β和MDA活性明显增高(

0.01)，血清SOD活性降低(

0.01)，肾小管坏死评分明显升高(

0.01)；免疫组化检测结果显示p-GSK-3β和p-RelA/p65磷酸化水平上调(

0.01)，Western blot检测结果显示NF-κB p65活性升高和GSK-3β活性降低(

0.01)，病理损伤加重。使用TDZD-8干预后，大鼠血清肌酐、尿素氮、TNF-α、IL-1β和MDA活性降低(

0.05)，血清SOD活性升高(

0.05)，肾小管坏死评分降低(

0.05)；免疫组化检测结果显示p-GSK-3β和p-RelA/p65磷酸化水平下调(

0.05)，Western blot检测结果显示NF-κB p65活性降低并且GSK-3β活性增高(

0.05)，病理损伤减轻。

结论

GSK-3β抑制剂能降低NF-κB活性，下调NF-κB的磷酸化，减少下游炎症因子的释放，减轻肾脏病理和氧化应激损伤，减轻肾移植缺血再灌注损伤。

Abstract

Objective

To investigate the effect of TDZD-8

a glycogen synthase kinase 3β (GSK-3β) inhibitor

on the activation of nuclear factor-κB (NF-κB) and oxidative stress in ischemia reperfusion injury (IRI) in the kidney graft of rats.

Methods

Male SD rats were randomized into renal transplantation (RT) model group and cold IRI model group. In both groups

the rats were subdivided into sham-operated group

RT group

RT+TDZD-8 (5 mg/kg) group and RT+TDZD-8 (1 mg/kg) group (

=6). Western blotting and immunohistochemistry were used to observe the changes in p-RelA/p65

p-GSK-3β

GSK-3β and RelA/p65 in the renal graft

and the changes in serum tumor necrosis factor-α (TNF-α)

interleukin-1β (IL-1β)

superoxide dismutase (SOD) activity and malondialdehyde (MDA) content were determined with enzyme-linked immunosorbent assay (ELISA). The pathological changes in the graft were observed with HE staining and renal tubular necrosis scores were assessed. A colorimetric assay was used to detect the changes in serum creatinine and urea nitrogen of the rats.

Results

Compared with sham-operated group

the recipient rats in RT model and cold IRI model groups showed significantly increased serum levels of creatinine

urea nitrogen

TNF-α

IL-1β

and MDA (

0.01)

lowered serum SOD activity (

0.01)

and increased renal tubular necrosis scores (

0.01); the expression levels of p-RelA/p65 and p-GSK-3β and NF-κB p65 activity were significantly increased (

0.01) and GSK-3β activity was decreased (

0.01) in the renal graft. Interventions with TDZD-8 in the 2 models significantly decreased serum levels of creatinine

urea nitrogen

TNF-α

IL-1β

and MDA (

0.05)

elevated serum SOD activity (

0.05) and lowered the renal tubular necrosis score (

0.05)

and decreased p-RelA/p65 and p-GSK-3β expression levels and NF-κB p65 activity in the graft (

0.05)

Western blotting showed decreased NF-κB p65 activity but enhanced GSK-3β activity (

0.05).

Conclusion

GSK-3β inhibitor can lower NF-κB activity

down-regulate the phosphorylation of NF-κB

and reduce the release of the downstream inflammatory factors to alleviate pathological changes and oxidative stress and reduce IRI in the renal graft.

关键词

Keywords

references

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