Effects of β-asarone on spatial learning and memory impairment by exhaustive exercise-induced fatigue: Role of NR-CaMKII-ERK/CREB signal in hippocampus of rats.

Autor: Xie S; School of Sports Science, Jinggangshan University, Jian, Jiangxi 343009, China., Zhu M; School of Sports Science, Jinggangshan University, Jian, Jiangxi 343009, China. Electronic address: zhu_mj@163.com., Zhu H; School of Sports Science, Jinggangshan University, Jian, Jiangxi 343009, China., Wang W; School of Sports Science, Jinggangshan University, Jian, Jiangxi 343009, China.
Jazyk: angličtina
Zdroj: Behavioural brain research [Behav Brain Res] 2024 Aug 05; Vol. 471, pp. 115076. Date of Electronic Publication: 2024 May 31.
DOI: 10.1016/j.bbr.2024.115076
Abstrakt: Objective: It is to investigate the effects of β-asarone on learning and memory, hippocampal morphology, synaptophysin (SYP) and postsynaptic density 95(PSD95) protein expression, N-methyl-D-aspartic acid receptor 2B (NR2B)- Ca 2+ /calmodulin (CaM)-dependent protein kinase II (CaMKII) - Extracellular signal-regulated kinase (ERK) / Cyclic-AMP response element binding protein (CREB) signal in hippocampus of rats with exhaustive exercise-induced fatigue.
Methods: Fifty Sprague-Dawley male rats were randomly divided into five groups: normal group, exercise group, exercise and β-asarone (2.5, 10, 40 mg/kg)-treated groups. The learning and memory in rats were tested by Morris water maze experiment. We measured the hippocampal morphology by Nissl staining. The levels of SYP, PSD95, NR2B, CaMKII, ERK1/2, CREB, p-NR2B, p-CaMKII, p-ERK1/2 and p-CREB expression were measured by western blot analysis.
Results: The results demonstrated that β-asarone (10, 40 mg/kg) treatment significantly decreased the latency to find the platform, increased the time spent in the target quadrant and the number of crossing the platform of rats with exhaustive exercise-induced fatigue. β-asarone (10, 40 mg/kg) treatment increased the cell density in the hippocampus CA1 region, significantly up-regulated NR2B-CaMKII-ERK/CREB signal and improved the protein expression levels of SYP and PSD95 in hippocampus of rats with exhaustive exercise-induced fatigue.
Conclusions: It suggests that β-asarone could improve learning and memory of rats with exhaustive exercise-induced fatigue. The mechanism might be related to β-asarone protecting the morphology of hippocampus, increasing the protein expression levels of SYP and PSD95 and up-regulating NR2B-CaMKII-ERK/CREB signal in hippocampus of rats with exhaustive exercise-induced fatigue.
Competing Interests: Declaration of Competing Interest There are no conflicts to declare.
(Copyright © 2024. Published by Elsevier B.V.)
Databáze: MEDLINE
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