脊椎动物视网膜的pH值及其自然发生的和病理变化的变化
Andrey V Dmitriev1, Robert A Linsenmeier2
1Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA.
Progress in retinal and eye research
|November 28, 2024
概括
本综述详细介绍了脊椎动物视网膜中的离子 (H+) 度. 视网膜pH值随着光线和昼夜节律的变化而变化,并且干扰可以导致酸性化,影响视力.
科学领域:
- 神经科学是一个神经科学.
- 眼科医生 眼科 眼科
- 身体生理学 身体生理学
背景情况:
- 离子 (H+) 的度,以pH值测量,对于细胞功能至关重要.
- 了解视网膜pH稳态对于理解视觉处理和疾病至关重要.
研究的目的:
- 对脊椎动物视网膜中H+度的现有数据进行审查.
- 讨论H+恒温的独特方面,包括代谢生产和缓冲.
- 在各种条件下详细说明细胞外H+度 ([H+]o) 的分布和动态变化.
主要方法:
- 对调查视网膜pH值的研究进行文献综述.
- 对细胞外H+分布和度梯度数据的分析.
- 检查影响视网膜pH值的因素,包括照明,昼夜节律和病理状态.
主要成果:
- 细胞外H+度 ([H+]o) 在脊椎动物视网膜内表现出特定的分布,在内部外核层中最高,并向RPE和玻璃体下降.
- 光会诱导复杂的,通常是化的[H+]o变化,而昼夜节律在夜间显示出更高的H+水平.
- 不同的病理状况,包括酸症,缺氧,糖尿病和碳酸酶抑制,扰乱H + 稳态,导致视网膜酸.
结论:
- 视网膜细胞外pH值是动态的,受到生理和病理因素的影响.
- 虽然细胞外pH值可能在细胞间通信中起作用,但它不是流体运输的主要调节器,也不是水平细胞的典型反信号.
- 在H+稳态中断通常导致视网膜酸性,对视网膜血流,新陈代谢和整体功能产生负面影响.
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