Journal
MOLECULES
Volume 27, Issue 23, Pages -Publisher
MDPI
DOI: 10.3390/molecules27238625
Keywords
sarcopenia; drug screening; animal models; skeletal muscle enlargement
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Human life expectancy has increased, leading to a rising proportion of elderly individuals and the associated issue of skeletal muscle aging. Exercise therapy is currently the only treatment option for this condition. This review explores strategies for modeling skeletal muscle aging in cell cultures and rodents, and discusses the potential of zebrafish models for future research.
Human life expectancy has markedly increased over the past hundred years. Consequently, the percentage of elderly people is increasing. Aging and sarcopenic changes in skeletal muscles not only reduce locomotor activities in elderly people but also increase the chance of trauma, such as bone fractures, and the incidence of other diseases, such as metabolic syndrome, due to reduced physical activity. Exercise therapy is currently the only treatment and prevention approach for skeletal muscle aging. In this review, we aimed to summarize the strategies for modeling skeletal muscle senescence in cell cultures and rodents and provide future perspectives based on zebrafish models. In cell cultures, in addition to myoblast proliferation and myotube differentiation, senescence induction into differentiated myotubes is also promising. In rodents, several models have been reported that reflect the skeletal muscle aging phenotype or parts of it, including the accelerated aging models. Although there are fewer models of skeletal muscle aging in zebrafish than in mice, various models have been reported in recent years with the development of CRISPR/Cas9 technology, and further advancements in the field using zebrafish models are expected in the future.
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