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神经胶质细胞感知并控制脑内的H^(+)/CO_(2)
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作者 Alexander V Gourine nicholas dale 杜一星(编译) 《神经损伤与功能重建》 2022年第8期496-496,共1页
维持恒定的大脑pH值对于支持神经元的活动、神经元回路内的有效交流以及大脑对信息的有效处理至关重要。本综述重点关注神经胶质细胞如何检测和响应脑组织pH值和CO_(2)浓度的变化,然后触发系统和局部的适应机制,确保脑回路运行环境的稳... 维持恒定的大脑pH值对于支持神经元的活动、神经元回路内的有效交流以及大脑对信息的有效处理至关重要。本综述重点关注神经胶质细胞如何检测和响应脑组织pH值和CO_(2)浓度的变化,然后触发系统和局部的适应机制,确保脑回路运行环境的稳定。本文详细介绍了神经胶质细胞对H+和CO_(2)敏感的细胞和分子机制,并讨论了神经胶质化学敏感性和信号传导在3个协同工作以保持大脑pH值恒定的关键机制中的作用。本文讨论的证据表明,脑干的星形胶质细胞和边缘神经胶质细胞对中枢呼吸二氧化碳化学感受至关重要——这是机体依据血液和大脑pH值和二氧化碳分压的变化来调节呼吸,以维持系统pH值稳态的一种基本生理机制。本文还回顾了在与神经元活动和代谢变化相关的酸变化负荷条件下,星形胶质细胞参与维持局部脑组织细胞外pH值的证据,并讨论了神经胶质细胞在介导CO_(2)对脑血管影响中的潜在作用。 展开更多
关键词 酸碱平衡 二氧化碳 酸碱度 呼吸回路
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Purines:From Diagnostic Biomarkers to Therapeutic Agents in Brain Injury 被引量:2
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作者 Bruno G.Frenguelli nicholas dale 《Neuroscience Bulletin》 SCIE CAS CSCD 2020年第11期1315-1326,共12页
The purines constitute a family of inter-related compounds that serve a broad range of important intracellular and extracellular biological functions.In particular,adenosine triphosphate(ATP)and its metabolite and pre... The purines constitute a family of inter-related compounds that serve a broad range of important intracellular and extracellular biological functions.In particular,adenosine triphosphate(ATP)and its metabolite and precursor,adenosine,regulate a wide variety of cellular and systems-level physiological processes extending from ATP acting as the cellular energy currency,to the adenosine arising from the depletion of cellular ATP and responding to reduce energy demand and hence to preserve ATP during times of metabolic stress.This inter-relationship provides opportunities for both the diagnosis of energy depletion during conditions such as stroke,and the replenishment of ATP after such events.In this review we address these opportunities and the broad potential of purines as diagnostics and restorative agents. 展开更多
关键词 PURINES ADENOSINE ATP Biomarker Stroke Cerebral ischemia Traumatic brain injury ADENINE D-RIBOSE
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