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Inhibition of hyperpolarization-activated cyclic nucleotide-gated cation channel attenuates cerebral ischemia reperfusion-induced impairment of learning and memory by regulating apoptotic pathway. | LitMetric

Inhibition of hyperpolarization-activated cyclic nucleotide-gated cation channel attenuates cerebral ischemia reperfusion-induced impairment of learning and memory by regulating apoptotic pathway.

Metab Brain Dis

Third-grade Pharmacological Laboratory on Traditional Chinese Medicine, State Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, 443002, PR China.

Published: December 2023

AI Article Synopsis

Article Abstract

Stroke is the second leading cause of death globally. Cognitive dysfunction is a common complication of stroke, which seriously affects the patient's quality of life. Previous studies have shown that the expression of hyperpolarization-activated cyclic nucleotide-gated cation (HCN) channel is closely related to ischemia-reperfusion (IR) injury and subsequent cognitive impairment. We also found that ZD7288, a specific inhibitor of the HCN channel, attenuated IR injury during short-term reperfusion. Since apoptosis can induce cell necrosis and aggravate cognitive impairment after IR, the purpose of this study is to define whether ZD7288 could improve cognitive impairment after prolonged cerebral reperfusion in rats by regulating apoptotic pathways. Our data indicated that ZD7288 can ameliorate spatial cognitive behavior and synaptic plasticity, protect the morphology of hippocampal neurons, and alleviate hippocampal apoptotic cells in IR rats. This effect may be related to down-regulating the expressions of pro-apoptotic proteins such as AIF, p53, Bax, and Caspase-3, and increasing the ratio of Bcl-2/Bax. Taken together, it suggested that inhibition of the HCN channel improves cognitive impairment after IR correlated with its regulation of apoptotic pathways.

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Source
http://dx.doi.org/10.1007/s11011-023-01306-3DOI Listing

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