Enhanced autophagy interacting proteins negatively correlated with the activation of apoptosis-related caspase family proteins after focal ischemic stroke of young rats

Jie Wang; Zihao Xia; Peng Sheng; Mengmeng Shen; Lidong Ding; Dezhi Liu; Bing Chun Yan

doi:10.1186/s12868-022-00740-w

BMC Neuroscience (Sep 2022)

Enhanced autophagy interacting proteins negatively correlated with the activation of apoptosis-related caspase family proteins after focal ischemic stroke of young rats

Jie Wang,
Zihao Xia,
Peng Sheng,
Mengmeng Shen,
Lidong Ding,
Dezhi Liu,
Bing Chun Yan

Affiliations

Jie Wang: Medical College, Institute of Translational Medicine, Department of Neurology, Affiliated Hospital of Yangzhou University, Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, The Key Laboratory of Syndrome Differentiation and Treatment of Gastric Cancer of the State Administration of Traditional Chinese Medicine, Yangzhou University
Zihao Xia: Medical College, Institute of Translational Medicine, Department of Neurology, Affiliated Hospital of Yangzhou University, Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, The Key Laboratory of Syndrome Differentiation and Treatment of Gastric Cancer of the State Administration of Traditional Chinese Medicine, Yangzhou University
Peng Sheng: Medical College, Institute of Translational Medicine, Department of Neurology, Affiliated Hospital of Yangzhou University, Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, The Key Laboratory of Syndrome Differentiation and Treatment of Gastric Cancer of the State Administration of Traditional Chinese Medicine, Yangzhou University
Mengmeng Shen: Medical College, Institute of Translational Medicine, Department of Neurology, Affiliated Hospital of Yangzhou University, Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, The Key Laboratory of Syndrome Differentiation and Treatment of Gastric Cancer of the State Administration of Traditional Chinese Medicine, Yangzhou University
Lidong Ding: Department of Neurology, Taizhou Second People’s Hospital
Dezhi Liu: Department of Neurology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine
Bing Chun Yan: Medical College, Institute of Translational Medicine, Department of Neurology, Affiliated Hospital of Yangzhou University, Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, The Key Laboratory of Syndrome Differentiation and Treatment of Gastric Cancer of the State Administration of Traditional Chinese Medicine, Yangzhou University

DOI: https://doi.org/10.1186/s12868-022-00740-w
Journal volume & issue: Vol. 23, no. 1
pp. 1 – 16

Abstract

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Abstract Background Neuronal injury induced in young rats by cerebral ischemia reperfusion (CIR) is known to differ substantially from that in adult rats. In the present study, we investigated the specific differences in neuronal injury induced by focal CIR between young and adult rats. Results 2, 3, 5-triphenyl tetrazolium chloride (TTC) staining revealed a gradual increase in the infarct volume of both young and adult rats in accordance with I/R times and was significantly lower in young rats than in adult rats under the same conditions. The number of cells in the cortex showing immunoreactivity for neuronal nuclei (NeuN) gradually decreased in both young and adult rats in accordance with I/R times; these numbers were significantly higher in young rats than in adult rats under the same conditions. Similarly, as the duration of I/R increased, the degree of glial activation in the cortex penumbra region became more severe in both young and adult groups; however, glial activation was significantly lower in the cortex penumbra region of young rats when compared with that in adult rats. In addition, the expression of Beclin-1 was significantly higher in the infarct penumbra of young rats than adult rats and was more frequently co-expressed with neurons. The levels of autophagy-related proteins increased significantly in the penumbra region after I/R in both young and adult groups, this increase was more pronounced in young rats than in adult rats. Following CIR, analysis revealed significantly lower levels of pro-apoptosis-related factors and significantly higher levels of anti-apoptosis-related proteins in the young rats than in adult rats. Conclusions Collectively, the present results suggest that the the reduced levels of neuronal death after CIR in young rats were closely related to enhanced levels of autophagy and reduced levels of pro-apoptosis in neurons.

Published in BMC Neuroscience

ISSN: 1471-2202 (Online)
Publisher: BMC
Country of publisher: United Kingdom
LCC subjects: Medicine: Internal medicine: Neurosciences. Biological psychiatry. Neuropsychiatry; Science: Physiology: Neurophysiology and neuropsychology
Website: http://bmcneurosci.biomedcentral.com

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