Isoflurane Preconditioning Protects the Myocardium Against Ischemia and Reperfusion Injury by Upregulating GRM1 Expression

Author(s): He Huang*, Xiaoyan Qing, Handan Li

Journal Name: Current Neurovascular Research

Volume 17 , Issue 2 , 2020


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Abstract:

Background: Reduction in myocardial I/R injury has become the key to the therapy of ischemic cardiovascular disease. Isoflurane (ISO) preconditioning can mimic the major potent protective mechanisms and attenuate ischemia injury. Nevertheless, the mechanisms involved in the cardioprotective effects afforded by isoflurane preconditioning have never been evaluated systematically.

Methods: Mice were randomly divided into an ISO preconditioning group and control group. The size of the infarcted region was measured, and comparisons between ISO preconditioning and control animals were made. The metabotropic glutamate receptor type 1(GRM1) expression levels in all groups were determined by quantitative PCR. GRM1 protein expression and DNA damage relative protein γ-H2AX were measured by western blot analysis. The oxidative stress was detected by immunofluorescence after staining with the Dihydroethidium (DHE).

Results: ISO preconditioning significantly reduced the IR induced infarct volumes and reversed the GRM1 protein expression level in I/R induced myocardial injury. Moreover, ISO preconditioning has a protective effect in reducing the I/R induced DNA damage and oxidative stress.

Conclusion: The results of the present study have demonstrated that the expression of GRM1 provides a protective role in ISO preconditioning against I/R-induced myocardial infarction by reducing the oxidative stress and DNA damage.

Keywords: ISO preconditioning, GRM1, ischemia, myocardial infarction, DNA, Dihydroethidium (DHE).

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Article Details

VOLUME: 17
ISSUE: 2
Year: 2020
Published on: 11 February, 2020
Page: [171 - 176]
Pages: 6
DOI: 10.2174/1567202617666200212104453
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