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The sirtuins constitute a group of histone deacetylases reliant on NAD for their activity that have gained recognition for their critical roles as regulators of numerous biological processes. These enzymes have various functions in skeletal muscle biology, including development, metabolism, and the body's response to disease. This comprehensive review seeks to clarify sirtuins' complex role in skeletal muscle metabolism, including glucose uptake, fatty acid oxidation, mitochondrial dynamics, autophagy regulation, and exercise adaptations. It also examines their critical roles in developing skeletal muscle, including myogenesis, the determination of muscle fiber type, regeneration, and hypertrophic responses. Moreover, it sheds light on the therapeutic potential of sirtuins by examining their impact on a range of skeletal muscle disorders. By integrating findings from various studies, this review outlines the context of sirtuin-mediated regulation in skeletal muscle, highlighting their importance and possible consequences for health and disease.
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http://dx.doi.org/10.7150/ijbs.96885 | DOI Listing |
J Gerontol A Biol Sci Med Sci
September 2025
Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, USA.
Maintenance of organismal function requires tightly regulated biomolecular communication. However, with aging, communication deteriorates, thereby disrupting effective information flow. Using information theory applied to skeletal muscle single cell RNA-seq data from young, middle-aged, and aged animals, we quantified the loss of communication efficiency over time.
View Article and Find Full Text PDFEchocardiography
September 2025
Department of Cardiology, The First Affiliated Hospital of Soochow University, Suzhou, China.
Objectives: To explore the relationships between cardiac parameters and body composition indices, identifying predictors of subclinical cardiac systolic dysfunction.
Methods: Using anthropometric and serological parameters, echocardiography, and body composition analysis, this study evaluated metabolic profiles, cardiac remodeling patterns, and body composition characteristics in young adult obese patients, while quantifying the correlations between cardiac parameters and body composition indices. Subclinical left ventricular systolic dysfunction was defined as global longitudinal strain (GLS) < 18%.
Ophthalmic Plast Reconstr Surg
September 2025
Division of Orbital and Ophthalmic Plastic Surgery.
Purpose: To objectively quantify, in East Asians and Caucasians, the width and distribution of the retro-orbicularis oculi and frontalis fat (ROOF) pad, subcutaneous fat, and orbicularis oculi muscle (OOM) at the superior orbital rim margin as well as 5 mm superior and inferior to this point.
Methods: Thirty adults were studied by high-resolution, surface coil MRI. In the quasi-sagittal image through the globe center, the ROOF, subcutaneous fat, and OOM thickness were measured anterior to the orbital septum, at 3 points: at the superior orbital rim, and 5 mm superior, and 5 mm inferior to the rim.
Ther Adv Chronic Dis
September 2025
Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Anshan Road 154, Heping District, Tianjin 300052, China.
Background: Liver cirrhosis, characterized by chronic inflammation, is frequently complicated by malnutrition. Nutritional indices, such as the prognostic nutritional index (PNI) and the skeletal muscle index (SMI), calculated as the muscle area quantified via CT scans at the third lumbar vertebra level divided by the square of the patient's height in meters (cm/m), are associated with outcomes in inflammatory diseases.
Objectives: We aimed to evaluate the diagnostic efficacy of the PNI both independently and in combination with the SMI for identifying malnutrition in cirrhosis and to explore their prognostic implications.
Front Genet
August 2025
Laboratory of Cellular Biochemistry and Molecular Biology, CRIBENS, Catholic University of the Sacred Heart, Milan, Italy.
Neutral Lipid Storage Disease with Myopathy (NLSDM) is a rare lipid metabolism disorder caused by impaired Adipose Triglyceride Lipase (ATGL) activity, leading to neutral lipid accumulation in various tissues. It typically manifests with progressive skeletal myopathy, with an onset of around 35 years. In addition, some patients develop cardiomyopathy and liver dysfunction.
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