期刊
NEUROMOLECULAR MEDICINE
卷 24, 期 2, 页码 155-168出版社
HUMANA PRESS INC
DOI: 10.1007/s12017-021-08672-0
关键词
Al-adenosine receptors; mitoK(ATP)(+)-channels; Hippocampus; Neuroprotection; Hypoxia; Hypercapnia
资金
- Russian Science Foundation [18-75-00016]
- Russian Science Foundation [18-75-00016] Funding Source: Russian Science Foundation
The study found that the combination of hypercapnia and hypoxia can increase the relative number of A1-adenosine receptors and mitoK(ATP)(+)-channels in astrocytes, potentially enhancing their neuroprotective effects. However, hypercapnia alone does not have this effect.
The mechanisms and signaling pathways of the neuroprotective effects of hypercapnia and its combination with hypoxia are not studied sufficiently. The study aims to test the hypothesis of the potentiating effect of hypercapnia on the systems of adaptation to hypoxia, directly associated with A1-adenosine receptors and mitochondrial ATP-dependent K+-channels (mitoK(ATP)(+)-channels). We evaluated the relative number of A1-adenosine receptors and mitoK(ATP)(+)-channels in astrocytes obtained from male Wistar rats exposed to various respiratory conditions (15 times of hypoxia and/or hypercapnia). In addition, the relative number of these molecules in astrocytes was evaluated on an in vitro model of chemical hypoxia, as well as in the cerebral cortex after photothrombotic damage. This study indicates an increase in the relative number of A1-adenosine receptors in astrocytes and in cells next to the stroke region of the cerebral cortex in rats exposed to hypoxia and hypercapnic hypoxia, but not hypercapnia alone. Hypercapnia and hypoxia increase the relative number of mitoK(ATP)(+)-channels in astrocytes and in cells of the peri-infarct region of the cerebral cortex in rats. In an in vitro study, hypercapnia mitigates the effects of acute chemical hypoxia observed in astrocytes for A1-adenosine receptors and mitoK(ATP)(+)-channels. Hypercapnia, unlike hypoxia, does not affect the relative number of A1 receptors to adenosine. At the same time, both hypercapnia and hypoxia increase the relative number of mitoK(ATP)(+)-channels, which can potentiate their protective effects with combined exposure. [GRAPHICS] .
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据