The authors studied the genesis of myosatellitocytes in normalcy and hypo- and hyperkinesia in skeletal muscles of albino rats. It is for the first time in the development of atrophy of the muscle fiber physiological hypertrophy that an additional mechanism has been described of the formation of myosatellitocytes from segregated nucleosarcoplasmic sites. An analysis is provided of ultrastructural reorganization of satellite cells in long-term restriction of motor activity.
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January 2025
National Council of Research (CNR), Institute of Biochemistry and Cell Biology, 00015 Monterotondo (RM), Italy.
Botulinum neurotoxin type A (BoNT/A) has expanded its therapeutic uses beyond neuromuscular disorders to include treatments for various pain syndromes and neurological conditions. Originally recognized for blocking acetylcholine release at neuromuscular junctions, BoNT/A's effects extend to both peripheral and central nervous systems. Its ability to undergo retrograde transport allows BoNT/A to modulate synaptic transmission and reduce pain centrally, influencing neurotransmitter systems beyond muscle control.
View Article and Find Full Text PDFJ Anat
January 2025
Institute of Sports Medicine Copenhagen, Department of Orthopedic Surgery, Copenhagen University Hospital - Bispebjerg-Frederiksberg, Copenhagen, Denmark.
Tendon injuries and disorders associated with mechanical tendon overuse are common musculoskeletal problems. Even though tendons play a central role in human movement, the intrinsic healing process of tendon is very slow. So far, it is known that tendon cell activity is supported by several interstitial cells within the tendon.
View Article and Find Full Text PDFVet Sci
December 2024
College of Veterinary Medicine, Yangzhou University/Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou 225009, China.
This study investigated the effects of long-term serum starvation on autophagy, metabolism, and differentiation of porcine skeletal muscle satellite cells (SMSCs) and elucidated the role of autophagy in skeletal muscle development. Our findings provide a theoretical basis for improving meat production in domestic pigs. The SMSCs isolated and preserved in our laboratory were revived and divided into six groups based on the culture medium serum concentration to simulate varying levels of serum starvation: 20% serum (control group), 15% serum (mild serum starvation group), 5% serum (severe serum starvation group), and their autophagy inhibition groups supplemented with 3-methyladenine.
View Article and Find Full Text PDFFood Sci Anim Resour
January 2025
Department of Animal Science and Technology, Chung-Ang University, Anseong 17546, Korea.
This study was conducted to investigate the recent research trends of alternative protein foods being developed to replace traditional livestock foods and thus determine the current state of the technology and the potential for industrialization. The results of this study showed that the technology related to cultured meat has not yet reached industrialization. However, serum-free media development, technologies to improve culture efficiency, and technologies to improve taste and flavor are being researched.
View Article and Find Full Text PDFJ Pediatr Ophthalmol Strabismus
January 2025
Purpose: To investigate the effects of recession or re-section surgery on PAX 7 positive satellite cells of the extraocular muscle (EOM) in rabbits.
Methods: A total of 20 rabbits (40 eyes) were included in this study. The superior rectus muscle of the right eye was either recessed or resected.
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