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How knee muscles and ground reaction forces shape knee buckling and ankle push-off in neuromuscular simulations of human walking.
Sci Rep
January 2025
Chair of Applied Mechanics, Technical University of Munich, Garching, 85748, Germany.
Ankle push-off is important for efficient, human-like walking, and many prosthetic devices mimic push-off using motors or elastic elements. The knee is extended throughout the stance phase and begins to buckle just before push-off, with timing being crucial. However, the exact mechanisms behind this buckling are still unclear.
View Article and Find Full Text PDFEffects of HMG CoA reductase (HMGCR) deficiency on skeletal muscle development.
FEBS J
January 2025
Greg Marzolf Jr. Muscular Dystrophy Center and Department of Neurology, University of Minnesota Medical School, Minneapolis, MN, USA.
Pathogenic variants in HMGCR were recently linked to a limb-girdle muscular dystrophy (LGMD) phenotype. The protein product HMG CoA reductase (HMGCR) catalyzes a key component of the cholesterol synthesis pathway. The two other muscle diseases associated with HMGCR, statin-associated myopathy (SAM) and autoimmune anti-HMGCR myopathy, are not inherited in a Mendelian pattern.
View Article and Find Full Text PDFAssessing the Effect of Fatigue on Swallowing Function in Adults with Acute Stroke. A Pilot Study.
Arch Rehabil Res Clin Transl
December 2024
Peninsula Hospital Center, Department of Speech-Language Pathology and Audiology, Far Rockaway, NY.
Objective: To determine if fatigue systematically effects the timing of swallowing events and to discuss underlying causes of fatigue other than peripheral neuromuscular fatigue.
Design: Pre-post within-subject repeated-measures design.
Setting: General acute care hospital and designated stroke center.
Recommendations for mitochondria transfer and transplantation nomenclature and characterization.
Nat Metab
January 2025
Centre for Orthopaedic Research, Medical School of the University of Western Australia, Nedlands, Western Australia, Australia.
Intercellular mitochondria transfer is an evolutionarily conserved process in which one cell delivers some of their mitochondria to another cell in the absence of cell division. This process has diverse functions depending on the cell types involved and physiological or disease context. Although mitochondria transfer was first shown to provide metabolic support to acceptor cells, recent studies have revealed diverse functions of mitochondria transfer, including, but not limited to, the maintenance of mitochondria quality of the donor cell and the regulation of tissue homeostasis and remodelling.
View Article and Find Full Text PDFSafe and Orally Bioavailable Inhibitor of Serine Palmitoyltransferase Improves Age-Related Sarcopenia.
ACS Pharmacol Transl Sci
January 2025
Laboratory of Integrative Systems Physiology, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland.
The accumulation of ceramides and related metabolites has emerged as a pivotal mechanism contributing to the onset of age-related diseases. However, small molecule inhibitors targeting the ceramide synthesis pathway for clinical use are currently unavailable. We synthesized a safe and orally bioavailable inhibitor, termed ALT-007, targeting the rate-limiting enzyme of ceramide synthesis, serine palmitoyltransferase (SPT).
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