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Haiyun Chen¹, Biqi Ren^2,3, Jing Wang³

¹Department of Plastic Surgery, Affiliated Friendship Plastic Surgery Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, China.

|April 1, 2025

概括

维生素D和Sirtuin 1 (Sirt1) 对抗与年龄相关的肌肉损失 (肉症). 这项研究表明,活性维生素D增强Sirt1,减少肌肉细胞衰老和增强肌肉修复,提供一种潜在的治疗策略.

科学领域:

老年学和肌肉生理学
分子生物学和内分泌学.

背景情况:

肌肉质量和功能与年龄相关的下降,与维生素D缺乏有关.
Sirtuin 1 (Sirt1) 是一个关键的蛋白质脱乙酶,参与细胞调节和衰老.

研究的目的:

研究由维生素D调节的Sirt1在预防肉类的作用.
阐明维生素D影响Sirt1和肌肉健康的分子机制.

主要方法:

使用了野生型,1α-基酶淘汰和Sirt1转基因淘汰小鼠模型.
评估肌肉Sirt1水平,质量,纤维类型和衰老标志物.
研究了1,25-二氧维生素D (1,25(OH) 2D3) 对C2C12神经细胞和介酶干细胞 (MSC) 的影响.

主要成果:

1,25(OH) 2D3通过VDR介导的转录在肌细胞中调节了Sirt1和MyoD1的表达.
在MSC中Sirt1过度表达减轻了肌肉质量损失,并改善了淘汰小鼠的肌肉纤维特征.
维生素D诱导的Sirt1通过减少衰老和SASP通过p53和p65.5的脱乙烯化来增强肌肉细胞的健康.

结论:

维生素D促进肌肉健康,并防止肉,部分通过Sirt1激活.
准维生素D-Sirt1通路为与年龄相关的肌肉衰竭提供了一个有希望的治疗策略.
用活性维生素D和Sirt1激活的补充剂可以控制肉症.

关键词:

我的世界 Myod1 在Sirt1上有活性维生素D的维生素D.肌肉再生肌肉再生这种类型的麻症是sarcopenia.

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