Egawa Tatsuro, Hayashi Tatsuya
Laboratory of Health and Exercise Sciences, Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, Japan.
Laboratory of Sports and Exercise Medicine, Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, Japan.
Front Physiol. 2022 Feb 24;13:855358. doi: 10.3389/fphys.2022.855358. eCollection 2022.
Glycative stress is a type of biological stress caused by non-enzymatic glycation reactions, which include advanced glycation end product (AGE) formation, AGE accumulation, glycation-driven dysfunction of proteins and cellular signaling, inflammation, oxidation, and tissue damage. Increased glycative stress derived from hyperglycemia and lifestyle disorders is a risk factor in metabolic and age-related diseases, such as type 2 diabetes, cardiovascular disease, cancer, Alzheimer's disease, osteoporosis, and dementia. Studies have shown that AGE accumulation is correlated with the age-related loss of muscle mass and power output, also called sarcopenia. Mechanistically, dysfunctions of contractile proteins, myogenic capacity, and protein turnover can cause glycative stress-induced skeletal muscle dysfunction. Because the skeletal muscle is the largest metabolic organ in the body, maintaining skeletal muscle health is essential for whole-body health. Increasing awareness and understanding of glycative stress in the skeletal muscle in this review will contribute to the maintenance of better skeletal muscle function.
糖基化应激是一种由非酶糖基化反应引起的生物应激,包括晚期糖基化终产物(AGE)的形成、AGE的积累、糖基化驱动的蛋白质功能障碍和细胞信号传导、炎症、氧化以及组织损伤。由高血糖和生活方式紊乱导致的糖基化应激增加是代谢性疾病和与年龄相关疾病的危险因素,如2型糖尿病、心血管疾病、癌症、阿尔茨海默病、骨质疏松症和痴呆症。研究表明,AGE的积累与与年龄相关的肌肉质量和力量输出的丧失有关,即肌肉减少症。从机制上讲,收缩蛋白功能障碍、生肌能力和蛋白质周转会导致糖基化应激诱导的骨骼肌功能障碍。由于骨骼肌是人体最大的代谢器官,维持骨骼肌健康对全身健康至关重要。在本综述中提高对骨骼肌中糖基化应激的认识和理解将有助于维持更好的骨骼肌功能。