JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
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Brain microvascular endothelial cells mediate neuroprotective effects on ischemia/reperfusion neurons.

AIM OF THE STUDY: The permeability of the blood-brain barrier (BBB) is a bottleneck for the development of new cerebropathy medications because the medication must be transmitted across the BBB to achieve its curative function. To explore a new approach to the treatment of brain disease, this study investigated the mediating effects of brain microvascular endothelial cells (MVECs) on injured neurons.

MATERIALS AND METHODS: MVECs and cortical neurons were cultured and damage by cerebral ischemia/reperfusion (I/R) was simulated. The conditioned media from four groups of MVECs - normal cells (N-CM), normal cells treated with Tong Luo Jiu Nao (TLJN) (NT-CM), simulated cerebral I/R cells (I/R-CM), and simulated cells treated with TLJN (I/RTCM) - were then collected. These conditioned media were added to neuronal cultures and the viability of the neurons was examined.

RESULTS: The results demonstrated that N-CM could alleviate I/R damage to neurons, and this capacity could be improved by TLJN treatment. However, I/R-CM could cause damage to normal and I/R neurons, while I/RT-CM could significantly alleviate the damage to I/R neurons.

CONCLUSIONS: We propose that MVECs secrete active substances that influence the survival of neurons, and so MVECs may mediate a neuroprotective effect on ischemia/reperfusion neurons.

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