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酸盐食补充剂减轻了小鼠神经肌肉结处与年龄相关的变化

Maira Rossi¹, Lucrezia Zuccarelli², Lorenza Brocca¹

¹Department of Molecular Medicine, University of Pavia, Pavia, Italy.

The Journal of physiology

|February 26, 2025

概括

酸盐补充剂通过增强氧化 (NO) 信号传递和减少氧化应激,改善了老年小鼠的神经肌肉结合稳定性和肌肉健康. 这表明了与年龄相关的肌肉衰退的潜在治疗策略.

科学领域:

衰老和神经肌肉功能
氧化还原生物学和氧化信号传递
肌肉生理学和肌肉再生

背景情况:

与年龄相关的神经肌肉衰退涉及神经和神经肌肉结 (NMJ) 不稳定.
线粒体功能障碍和氧化还原失衡与衰老有关.
氧化 (NO) 的生物可用性随着年龄的增长而降低,影响肌肉健康.

研究的目的:

研究酸盐补充剂对抗与年龄相关的神经肌肉变化的潜力.
评估酸盐补充剂对老年小鼠NMJ完整性,肌肉纤维特性和氧化还原状态的影响.

主要方法:

年轻,老和补充酸盐的老老鼠的比较.
评估NO信号,氧化/化应激标志物和抗氧化酶水平.
分析肌肉纤维大小,纤维化,NMJ形态和肌缩标志物.

主要成果:

老老鼠表现出NO信号受损,氧化应激增加,肌肉纤维较小和NMJ不稳定.
在老老鼠中补充酸盐改善了NO的生物可用性,减少了纤维化,增加了肌肉纤维大小.
补充剂还降低了氧化应激,逆转了NMJ变化,并降低了变质标志物.

结论:

酸盐补充剂可以通过改善NO生物可用性和氧化还原平衡来抵消与年龄有关的神经肌肉衰退.
这一策略增强了合成代谢途径,稳定了神经肌肉相互作用.
酸盐补充剂是一种潜在的治疗方法,可以缓解与年龄相关的肌肉损失和功能障碍.

关键词:

年龄化的衰老.扩展器是指数长度的长度长度.胃中半导体胃中半导体线粒体中的线粒体.神经肌肉结节是一个神经肌肉结节.酸盐补充剂的使用方法氧化应激是一种氧化应激.前的前侧.

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