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线粒体重塑潜在的年龄诱导的骨肌肉消耗:让我们谈谈性
Alexandra Moreira-Pais1, Rui Vitorino2, Cláudia Sousa-Mendes3
1Research Center in Physical Activity, Health and Leisure (CIAFEL), Faculty of Sport, University of Porto (FADEUP) and Laboratory for Integrative and Translational Research in Population Health (ITR), 4200-450, Porto, Portugal; LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal; Centre for Research and Technology of Agro Environmental and Biological Sciences (CITAB), Inov4Agro, University of Trás-os-Montes and Alto Douro (UTAD), Quinta de Prados, 5000-801, Vila Real, Portugal.
在老年女性中,由于线粒体功能障碍,萨尔科佩尼亚会更严重地影响骨肌肉,与男性不同. 这凸显了针对性别特异的萨尔科佩尼亚治疗需要专注于线粒体的需要.
科学领域:
- 肌肉生理学和衰老研究.
- 线粒体生物学和功能.
- 年龄相关疾病中的性别差异.
背景情况:
- 麻症,与年龄相关的肌肉损失,降低生活质量,增加死亡率.
- 在萨尔科佩尼亚病变发生过程中的性别差异,特别是线粒体功能障碍,尚未得到充分理解.
- 了解这些差异对于开发有效的肉症干预措施至关重要.
研究的目的:
- 为了研究骨肌肉在衰老过程中线粒体重塑的性别差异.
- 为了分析大鼠腹肌肌的线粒体丰富部分的蛋白质变化.
- 识别导致性别特异性肉症发展的分子机制.
主要方法:
- 来自年轻和老年雄性和雌性大鼠腹肌肌肉中的线粒体丰富部分的蛋白质组概况.
- 分析因年龄而导致的骨肌缩和纤维化.
- 评估激素信号通路 (雌激素和雄激素受体) 和线粒细胞衰变调解器 (帕金).
主要成果:
- 年龄诱导的骨肌肉缩和纤维化在两性,在女性更明显.
- 女人显示线粒体雌激素受体α信号的年龄相关的减少.
- 女性特有的线粒体重塑包括改变脂肪酸氧化,减少复杂子单元,增加氧化损伤,可能是由于帕金斯水平较低.
- 男人保持了丸激素和雄激素受体水平,与有限的年龄诱导的线粒体重塑.
结论:
- 与男性相比,女性的衰老更严重地影响骨肌肉线粒体蛋白质组.
- 女人与年龄相关的线粒体功能障碍可能与雌激素信号减少和线粒体功能受损有关.
- 这些发现强调了对萨尔科佩尼亚管理和针对线粒体的治疗方法的性别个性化方法的必要性.
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