期刊
NUTRIENTS
卷 14, 期 9, 页码 -出版社
MDPI
DOI: 10.3390/nu14091975
关键词
high-fat diet; muscle; sarcopenic obesity; mitochondria; zebrafish
资金
- National Natural Science Foundation of China [81801392, 32100919]
- Research Foundation of Hunan Province Education Department [21B0066]
- Hunan Provincial Natural Science Foundation of China [2019JJ50098]
- Postgraduate Scientific Research Innovation Project of Hunan Province [CX20200532, CX20210483]
This study found that a high-fat diet can lead to decreased mitochondrial function and subsequent muscle atrophy in a zebrafish model. These findings provide new insights into the development of therapeutic strategies for mitochondria-related muscular atrophy.
Obesity is a highly prevalent disease that can induce metabolic syndrome and is associated with a greater risk of muscular atrophy. Mitochondria play central roles in regulating the physiological metabolism of skeletal muscle; however, whether a decreased mitochondrial function is associated with impaired muscle function is unclear. In this study, we evaluated the effects of a high-fat diet on muscle mitochondrial function in a zebrafish model of sarcopenic obesity (SOB). In SOB zebrafish, a significant decrease in exercise capacity and skeletal muscle fiber cross-sectional area was detected, accompanied by high expression of the atrophy-related markers Atrogin-1 and muscle RING-finger protein-1. Zebrafish with SOB exhibited inhibition of mitochondrial biogenesis and fatty acid oxidation as well as disruption of mitochondrial fusion and fission in atrophic muscle. Thus, our findings showed that muscle atrophy was associated with SOB-induced mitochondrial dysfunction. Overall, these results showed that the SOB zebrafish model established in this study may provide new insights into the development of therapeutic strategies to manage mitochondria-related muscular atrophy.
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