维生素D3补充可以逆转与衰老相关的胆固醇功能的变化,并改善老鼠的空间记忆
Elif Aksoz1, Medine Karabulut2, Mustafa Hilmi Yaranoğlu3
1Balikesir University, Faculty of Medicine, Department of Medical Pharmacology, Cagis Campus, Balikesir, Turkey.
维生素D补充剂通过增强大脑胆固醇功能,改善了老老鼠的空间记忆. 这表明维生素D可能有助于延缓与年龄相关的认知衰退和阿尔茨海默病.
科学领域:
- 神经科学是一个神经科学.
- 老年学是一门学科.
- 营养科学 营养科学
背景情况:
- 维生素D缺乏在衰老中很常见,并且与认知能力下降,痴呆和阿尔茨海默病 (AD) 相关.
- 老龄化会影响饮食中的维生素D摄入量和合成,加剧缺乏症的风险.
研究的目的:
- 为了研究是否维生素D补充剂可以抵消与年龄相关的记忆缺陷和老老鼠的海马胆固醇系统变化.
- 评估维生素D对空间记忆和老化大脑中的特定神经递质酶活动的影响.
主要方法:
- 三十只Wistar白色老鼠 (年轻和老年) 被分为年轻对照,老年对照和老年+维生素D组.
- 老老鼠接受维生素D (500 IU/kg/天);用莫里斯水迷宫测试空间记忆.
- 分析了海马体的乙胆 (ACh) 水平和胆乙转移酶 (ChAT),乙胆化酶 (AChE) 和丁胆化酶 (BChE) 的活性.
主要成果:
- 维生素D补充剂增加了老老鼠的ACh水平和AChE/BChE活动,扭转了与年龄相关的下降.
- 随着年龄的增长或维生素D治疗,ChAT酶活性没有改变.
- 增强的海马胆能传输与老老鼠的空间记忆性能改善相关.
结论:
- 维生素D补充剂有效地改善了老老鼠的空间记忆.
- 认知效益很可能是通过逆转与年龄相关的脑胆固醇功能的改变来实现的.
- 维生素D有可能缓解与衰老和阿尔茨海默病相关的认知衰退.
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