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Metformin inhibits muscle atrophy through the PI3K/AKT/mTOR pathway in a rat model of acute rotator cuff tears.
J Shoulder Elbow Surg
December 2024
Department of Orthopaedic Surgery, Konkuk University Medical Center, Seoul, Korea.
Background: Muscle atrophy after the rupture of a rotator cuff (RC) tendon is a major factor that increases the risk of secondary complications and re-rupture. Metformin, a type 2 diabetes treatment, can be used to modulate intracellular signaling pathways that promote muscle growth. This study aimed to verify whether systemic metformin administration could prevent supraspinatus (SS) atrophy after RC rupture in a rat model.
View Article and Find Full Text PDFSingle-Cell RNA-Seq Reveals Injuries in Aortic Dissection and Identifies PDGF Signalling Pathway as a Potential Therapeutic Target.
J Cell Mol Med
December 2024
Department of Emergency Medicine, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong, China.
Aortic dissection (AD) represents a critical condition characterised by a tear in the inner lining of the aorta, leading to the leakage of blood into the layers of the aortic wall, posing a significant risk to life. However, the pathogenesis is unclear. In this study, scRNA-seq was applied to cells derived from aortas of both AD and non-AD donors (control) to unveil the cellular landscape.
View Article and Find Full Text PDFImpact of galectin-3 on neurotrophic factor expression by PCR array: potential implications for the human cornea.
Front Cell Dev Biol
December 2024
Department of Ophthalmology, Tufts Medical Center, Tufts University School of Medicine, Boston, MA, United States.
The cornea is densely innervated to maintain the integrity of the ocular surface, facilitating functions such as sensation and tear production. Following damage, alterations in the corneal microenvironment can profoundly affect its innervation, potentially impairing healing and sensory perception. One protein frequently upregulated at the ocular surface following tissue damage is galectin-3, but its contribution to corneal nerve regeneration remains unclear.
View Article and Find Full Text PDFNEDD4 enhances bone‑tendon healing in rotator cuff tears by reducing fatty infiltration.
Mol Med Rep
March 2025
School of Clinical Medicine, Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China.
Rotator cuff tears (RCT) can cause shoulder pain, weakness and stiffness, significantly affecting daily life. Analysis of the GSE103266 dataset revealed significant changes in the mTOR/PI3K/Akt signaling pathway and lipid metabolism‑related pathways, suggesting that fatty infiltration may affect RCT. The analysis indicated that the ubiquitin ligase NEDD4 plays a critical role in RCT.
View Article and Find Full Text PDFIon Channels as Potential Drug Targets in Dry Eye Disease and Their Clinical Relevance: A Review.
Cells
December 2024
Center for Research on Harmful Effects of Biological and Chemical Hazards, Departments of Genetics, Microbiology and Immunology, Faculty of Medical Sciences, University of Kragujevac, 69 Svetozar Markovic Street, 34000 Kragujevac, Serbia.
Dry eye disease (DED) is a common multifactorial disorder characterized by a deficiency in the quality and/or quantity of tear fluid. Tear hyperosmolarity, the dysfunction of ion channel proteins, and eye inflammation are primarily responsible for the development and progression of DED. Alterations in the structure and/or function of ion channel receptors (transient receptor potential ankyrin 1 (TRPA1), transient receptor potential melastatin 8 (TRPM8), transient receptor potential vanilloid 1 and 4 (TRPV1 and TRPV4)), and consequent hyperosmolarity of the tears represent the initial step in the development and progression of DED.
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