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脳は温度変化に脆弱な組織と考えられており,温度が神経回路構造や機能に影響を与えることが報告されてきた。脳内の免疫細胞であるミクログリアは,動的な放射状突起で脳内環境を探索し,シナプス除去などによって神経回路の再編成を行う。本論では,ミクログリアが温度感受性受容体であるTRPチャネルを介して脳内温度情報を感知し,神経回路再編成を行う可能性について考察する。
Abstract
Brain tissue is vulnerable to temperature changes, which are known to affect the structure and function of neural circuits. Owing to their dynamic ramified processes, microglia, which serve as immune cells in the brain, are associated with surveillance of the brain environment and mediate synaptic pruning to reorganize neural circuits. In this section, we discuss the possible role of microglia as temperature sensors in the brain via thermosensitive transient receptor potential channels and their role in reorganization of neural circuits.
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