在 n-3 PUFA 和 B 维生素的协同作用下,通过促进 TET2 介导的活性 DNA 脱甲基化来预防糖尿病认知功能障碍
1School of Health and Life Sciences, University of Health and Rehabilitation Sciences, Qingdao, Shandong Province, China.
Clinical nutrition (Edinburgh, Scotland)
|January 11, 2025
概括
补充n-3多不和脂肪酸 (PUFA) 和B族维生素可以预防糖尿病认知功能障碍 (DCD). 这种组合通过增强营养运输和DNA甲基化来改善糖尿病模型中的认知功能和大脑健康.
科学领域:
- 神经科学是一个神经科学.
- 内分泌学 在内分泌学.
- 营养科学 营养科学
背景情况:
- 糖尿病认知功能障碍 (DCD) 是糖尿病管理中日益关注的问题.
- n-3多不和脂肪酸 (PUFA) 和B族维生素与预防糖尿病并发症有关.
- 对n-3PUFA和维生素B对DCD的协同作用尚未完全理解.
研究的目的:
- 调查n-3PUFA和同类半氨酸在DCD中的作用.
- 在DCD上探索鱼油,叶酸和维生素B12补充剂联合的分子机制.
- 评估这种组合对DCD的治疗潜力.
主要方法:
- 病例对照研究,比较红细胞膜脂肪酸和血清同型半氨酸在患有和没有DCD的糖尿病患者中.
- 用鱼油,叶酸和维生素B12治疗链毒素诱导的DCD小鼠.
- 对认知功能,神经元形态,同类氨酸代谢,DNA甲基化和脱甲基化途径的分析.
主要成果:
- 低的n-3PUFA水平和高的homocysteine显著增加了DCD风险.
- 联合补充剂改善了DDC小鼠的认知障碍和神经元形态.
- 叶酸和B12通过降低homocysteine和S-adenosylhomocysteine来增强大脑的DHA运输,抑制细胞亡.
- 补充促进了DNA甲基化,并通过TET2功能维持了TET介导的脱甲基化.
结论:
- 结合的n-3PUFA和B族维生素补充剂显示了对DCD的协同预防作用.
- 这种组合代表了在糖尿病患者中预防DCD的有希望的策略.
- 了解分子机制为DCD病原和治疗提供了新的见解.
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