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Molecular Research in Skeletal Muscle Metabolism

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Endocrinology and Metabolism".

Deadline for manuscript submissions: closed (30 July 2024) | Viewed by 2687

Special Issue Editor


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Guest Editor
Division of Physiology, Pharmacology and Neuroscience, School of Life Sciences, Queen’s Medical Centre, University of Nottingham Medical School, Nottingham NG7 2UH, UK
Interests: type 2 diabetes; muscle insulin resistance; sepsis; inflammation; energy metabolism; ageing; inactivity
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Special Issue Information

Dear Colleagues,

Skeletal muscles (SKMs) are mostly used for locomotion and other physical duties, as well as preserving the structural integrity of the body and facilitating the body’s systemic blood and nutritional flow. Skeletal muscle properties and volume are inextricably linked to human health, lifespan and the quality of life. While muscle metabolism can readily satisfy the resting muscle tone, which is constant throughout the day, intense physical activities may force muscle metabolism to meet energy demands that are nearly 100 times higher than the resting values. Carefully coordinating anatomical, physiological and biochemical adaptations in response to cellular molecular reactions to repeated stressors is the only way to accomplish this enormous effort. In summary, a collection of signaling mechanisms mimics the volume, strength and resilience of muscles by first obtaining more dormant DNA material from satellite cells, then replicating particular DNA genetic sequences to facilitate the translation of subsequent genetic messages, and finally producing a sequence of amino acids that build new proteins in muscles.

The present call is intended to stimulate thoughts about recent findings or improvements in previously discovered molecular mechanisms underpinning muscle metabolism.

Dr. Dumitru Constantin-Teodosiu
Guest Editor

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Keywords

  • skeletal muscles
  • muscle metabolism
  • cellular molecular
  • satellite cells
 

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Published Papers (1 paper)

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Research

12 pages, 3062 KiB  
Article
Aging-Related Metabolome Analysis of the Masseter Muscle in Senescence-Accelerated Mouse-Prone 8
by Yoshiaki Kato, Teruhide Hoshino, Yudai Ogawa, Keisuke Sugahara and Akira Katakura
Int. J. Mol. Sci. 2024, 25(17), 9684; https://doi.org/10.3390/ijms25179684 - 7 Sep 2024
Cited by 2 | Viewed by 1767
Abstract
Frailty is a vulnerable state that marks the transition to long-term care for older people. Early detection and prevention of sarcopenia, the main symptom of frailty, are important to ensure an excellent quality of life for older people. Recently, the relationship between frailty, [...] Read more.
Frailty is a vulnerable state that marks the transition to long-term care for older people. Early detection and prevention of sarcopenia, the main symptom of frailty, are important to ensure an excellent quality of life for older people. Recently, the relationship between frailty, sarcopenia, and oral function has been attracting attention. This study aimed to clarify the changes in metabolites and metabolic pathways due to aging in the masseter muscle of senescence-accelerated mouse-prone 8 (SAMP8) mice. A capillary electrophoresis-mass spectrometry metabolome analysis was performed on the masseter muscle of 12-week-old, 40-week-old, and 55-week-old mice. The expression of enzymes involved in metabolome pathways considered to be related to aging was confirmed using reverse transcription polymerase chain reaction. Clear metabolic fluctuations were observed between 12, 40-week-old, and 55-week-old SAMP8 mice. The extracted metabolic pathways were the glycolysis, polyamine metabolome, and purine metabolome pathways. Nine fluctuated metabolites were common among the groups. Spermidine and Val were increased, which was regarded as a characteristic change in the masseter muscle due to aging. In conclusion, the age-related metabolic pathways in SAMP8 mice were the glycolysis, polyamine metabolome, and purine metabolome pathways. The increased spermidine and Val levels in the masseter muscle compared with the lower limbs are characteristic changes. Full article
(This article belongs to the Special Issue Molecular Research in Skeletal Muscle Metabolism)
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