Transient receptor potential vanilloid-1 antagonist AMG517 playing a neuroprotective role in cerebral ischemia/reperfusion injury in mice by regulating the release of inflammatory factors

doi:10.16098/j.issn.0529-1356.2020.02.003

Abstract

Abstract:

Objective To investigate the effects of transient receptor potential vanilloid-1(TRPV1) antagonist AMG517 on cerebral ischemic/reperfusion injury in mice. Methods Forty male C57BL/6 mice were assigned to the following groups: sham group, vehicle+ischemia/reperfusion group (vehicle), capsaicin+ischemia/reperfusion group(capsaicin), and AMG517+ischemia/reperfusion group(AMG517). Ischemic/reperfusion injury was induced by permanent middle cerebral artery occlusion(MCAO) and neurological deficits were evaluated 72 hours after MCAO. Then, infarct volume, brain edema, mRNA expression of TRPV1 and serum concentrations of tumor necrosis factor α(TNF-α) and interleukin-10 (IL-10) were measured. Results Compared with the vehicle group, AMG517 significantly decreased the infarct volume (P<0.01). Neurobehavioral score significantly decreased following administration of AMG517 (P<0.01) 72 hours after MCAO. Compared with the sham group, the mRNA expression of TRPV1 significantly increased in vehicle group (P<0.01). AMG517 significantly increased the anti-inflammatory cytokine IL-10 and decreased the inflammatory cytokine TNF-α (P<0.05). Conclusion AMG517 can improve ischemia/reperfusion injury in mice and may play a neuroprotective effect by alleviating inflammation.

Key words: Ischemia/reperfusion injury, Transient receptor potential vanilloid-1, AMG517, Neurobehavioral score, Real-time PCR, Enzyme inked immunosorbent assay, Mouse

CLC Number:

R743.31

PENG Zhi-feng LIU Ying NIU Chun-hong. Transient receptor potential vanilloid-1 antagonist AMG517 playing a neuroprotective role in cerebral ischemia/reperfusion injury in mice by regulating the release of inflammatory factors[J]. Acta Anatomica Sinica, 2020, 51(2): 167-171.

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