Neuroprotection on Ischemic Brain Injury by Mg/H Released from Endovascular Mg Implant

Overview

Journal Bioact Mater

Specialty Biomedical Engineering

Date 2024 Sep 16

PMID 39280580

Authors

Yang Zhang

Hongkang Zhang

Miaowen Jiang

Xiaofeng Cao

Xiaoxiao Ge

Baoying Song

Jing Lan

Wenhao Zhou

Zhengfei Qi

Xuenan Gu

Juzhe Liu

Yufeng Zheng

Ming Li

Xunming Ji

Affiliations

Soon will be listed here.

Abstract

Most acute ischemic stroke patients with large vessel occlusion require stent implantation for complete recanalization. Yet, due to ischemia-reperfusion injury, over half of these patients still experience poor prognoses. Thus, neuroprotective treatment is imperative to alleviate the ischemic brain injury, and a proof-of-concept study was conducted on "biodegradable neuroprotective stent". This concept is premised on the hypothesis that locally released Mg/H from Mg metal within the bloodstream could offer synergistic neuroprotection against reperfusion injury in distant cerebral ischemic tissues. Initially, the study evaluated pure Mg's neuroactive potential using oxygen-glucose deprivation/reoxygenation (OGD/R) injured neuron cells. Subsequently, a pure Mg wire was implanted into the common carotid artery of the transient middle cerebral artery occlusion (MCAO) rat model to simulate human brain ischemia/reperfusion injury. analyses revealed that pure Mg extract aided mouse hippocampal neuronal cell (HT-22) in defending against OGD/R injury. Additionally, the protective effects of the Mg wire on behavioral abnormalities, neural injury, blood-brain barrier disruption, and cerebral blood flow reduction in MCAO rats were verified. Conclusively, Mg-based biodegradable neuroprotective implants could serve as an effective local Mg/H delivery system for treating distant cerebral ischemic diseases.

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