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KMID : 1200020220460020222
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Diabetes & Metabolism Journal
2022 Volume.46 No. 2 p.222 ~ p.238
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Glial and Vascular Cell Regulation of the Blood-Brain Barrier in Diabetes
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Li Xiaolong
Cai Yan
Zhang Zuo
Zhou Jiyin
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Abstract
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As a structural barrier, the blood-brain barrier (BBB) is located at the interface between the brain parenchyma and blood, and modulates communication between the brain and blood microenvironment to maintain homeostasis. The BBB is composed of endothelial cells, basement membrane, pericytes, and astrocytic end feet. BBB impairment is a distinguishing and pathogenic factor in diabetic encephalopathy. Diabetes causes leakage of the BBB through downregulation of tight junction proteins, resulting in impaired functioning of endothelial cells, pericytes, astrocytes, microglia, nerve/glial antigen 2-glia, and oligodendrocytes. However, the temporal regulation, mechanisms of molecular and signaling pathways, and consequences of BBB impairment in diabetes are not well understood. Consequently, the efficacy of therapies diabetes targeting BBB leakage still lags behind the requirements. This review summarizes the recent research on the effects of diabetes on BBB composition and the potential roles of glial and vascular cells as therapeutic targets for BBB disruption in diabetic encephalopathy.
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KEYWORD
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Astrocytes, Blood-brain barrier, Diabetes mellitus, Endothelial cells, Microglia, Oligodendrocyte precursor cells, Oligodendroglia, Pericytes
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