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image of Electroacupuncture Serum Protects Blood-brain Barrier Damage after Ischemic Stroke BY Regulating the Pericytes in vitro

Abstract

Background

Electroacupuncture (EA) exerts a protective role in Blood-Brain Barrier (BBB) damage after ischemic stroke, but whether this effect involves the regulation of the pericytes is unclear.

Methods

The BBB models were established with brain microvascular endothelial cells (BMECs) and pericytes, and the co-cultured cells were randomly divided into three groups: the control group, oxygen-glucose deprivation/reoxygenation (OGD/R) group and EA group. OGD/R was performed to simulate cerebral ischemia-reperfusion . EA serum was prepared by EA treatment at the “Renzhong” (GV26) and “Baihui” (GV20) acupoints in middle cerebral artery occlusion/reperfusion rats. Furthermore, the characteristics of BMECs and pericytes were identified with immunohistochemistry staining. The cell morphology of the BBB model was observed using an inverted microscope. The function of BBB was measured with transendothelial electrical resistance (TEER) and sodium fluorescein, and the viability, apoptosis, and migration of pericytes were detected by cell counting kit-8, flow cytometry, and Transwell migration assay.

Results

BMECs were positive staining for Factor-VIII, and pericytes were positive staining for the α-SMA and NG2. EA serum improved cell morphology of the BBB model increased TEER, and decreased sodium fluorescein in OGD/R condition. Besides, EA serum alleviated pericytes” apoptosis rate and migration number, and enhanced pericytes' viability rate in OGD/R condition.

Conclusion

EA serum protects against BBB damage induced by OGD/R , and this protection might be achieved by attenuating pericytes apoptosis and migration, as well as enhancing pericytes viability. The findings provided new evidence for EA as a medical therapy for ischemic stroke.

© 2024 Bentham Science Publishers
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2024-11-25
2025-01-23

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/content/journals/cnr/10.2174/0115672026361204241115112340
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Electroacupuncture Serum Protects Blood-brain Barrier Damage after Ischemic Stroke BY Regulating the Pericytes in vitro
Bentham Science Publishers ; https://doi.org/10.2174/0115672026361204241115112340
/content/journals/cnr/10.2174/0115672026361204241115112340
/content/journals/cnr/10.2174/0115672026361204241115112340
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  • Article Type:     Research Article
Keywords: Electroacupuncture serum ; in vitro ; blood-brain barrier ; ischemic stroke ; pericyte ; oxygen-glucose deprivation/reoxygenation

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