长期补充肌酸可以通过增加大脑中的CK-BB活动来改善D-Gal诱导的衰老模型中的认知和海马体结构性可塑性障碍
Zhu Zhu1, Hantao Zhang2, Qianlin Li2
1Department of Pathology and Pathophysiology, School of Medicine Nanjing University of Chinese Medicine Nanjing China.
Food science & nutrition
|January 16, 2025
概括
肌酸补充可以提高大脑肌酸激酶-BB (CK-BB) 活性,改善老年小鼠的学习,记忆和突触可塑性. 这种神经保护作用可以对抗与衰老相关的认知衰退和氧化应激.
科学领域:
- 神经科学是一个神经科学.
- 生物化学 生物化学
- 老年学是一门学科.
背景情况:
- 肌酸 (Cr) 通过脂肌酸-肌酸激酶 (pCr-CK) 系统在大脑能量恒温中发挥着至关重要的作用.
- 一种特定于大脑的CK异型,CK-BB,对大脑能量代谢至关重要.
- 与年龄相关的认知能力下降通常与大脑能量代谢受损和氧化压力有关.
研究的目的:
- 研究肌酸补充对认知功能和结构突触可塑性的影响.
- 探索肌酸激酶-BB (CK-BB) 在老化小鼠模型中调解这些效应的作用.
主要方法:
- 使用D-银糖 (D-gal) 注射诱导老化小鼠模型.
- 使用腺相关病毒实验性地降低了肌酸激酶-BB (CK-BB) 水平.
- 小鼠在饮食中补充了3%的肌酸.
主要成果:
- D-银糖诱导认知衰退,氧化应激,并降低了CK-BB的活动和表达.
- 降低CK-BB水平导致学习缺陷,氧化应激和海马脊柱损伤.
- 肌酸补充剂增加了CK-BB的活性和表达,减轻了认知障碍和神经退行.
结论:
- 在D-银糖引起的认知障碍中,CK-BB对结构性可塑性至关重要.
- 肌酸作为神经保护剂,有可能预防或延迟与年龄相关的认知缺陷.
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