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The E3 ubiquitin ligase MARCH1 mediates downregulation of plasma membrane GABA receptors under ischemic conditions by inhibiting fast receptor recycling.
Sci Rep
January 2025
Institute of Pharmacology and Toxicology, University of Zurich, Winterthurerstrasse 190, CH-8057, Zurich, Switzerland.
GABA receptors mediate prolonged inhibition in the brain and are important for keeping neuronal excitation and inhibition in a healthy balance. However, under excitotoxic/ischemic conditions, GABA receptors are downregulated by dysregulated endocytic trafficking and can no longer counteract the severely enhanced excitation, eventually triggering neuronal death. Recently, we developed interfering peptides targeting protein-protein interactions involved in downregulating the receptors.
View Article and Find Full Text PDFEndoscopic Flexor Hallucis Longus Tendon Transfer for the Treatment of Chronic Achilles Tendon Defects.
JBJS Essent Surg Tech
January 2025
The Ohio State University College of Medicine, Columbus, Ohio.
Background: An all-inside endoscopic flexor hallucis longus (FHL) tendon transfer is indicated for the treatment of chronic, full-thickness Achilles tendon defects. The aim of this procedure is to restore function of the gastrocnemius-soleus complex while avoiding the wound complications associated with open procedures.
Description: This procedure can be performed through 2 endoscopic portals, a posteromedial portal (the working portal) and a posterolateral portal (the visualization portal).
AbstractClimate change will affect both the mean and the variability in environmental conditions and may have major negative impacts on population densities in the future. For annual plants that already live in an extreme environment like the Sonoran Desert, keeping a fraction of their seeds dormant underground (for possibly years at a time) is critical to survive. Here, we consider how this form of bet hedging (i.
View Article and Find Full Text PDFElectrical Interference in Clinical Practice: A Conceptual and Practical Approach.
Muscle Nerve
December 2024
Department of Neurology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA.
Electrical Interference (EI: radiated electromagnetic and/or power line interference) is a common problem in clinical neurophysiology with many causes and thus various conceivable solutions. Although newer digitized electrodiagnostic (EDX) systems have markedly reduced EI issues, it remains a possible impediment in achieving high quality studies. So that the electrodiagnostic medicine consultant (EMC) can problem solve EI, this monograph details the fundamental functional concepts and terminology of electronic amplification and recording electrodes from a practical perspective.
View Article and Find Full Text PDFCalcium sensing receptor expression is downregulated in gastroenteropancreatic neuroendocrine tumours via epigenetic mechanisms.
Int J Cancer
March 2025
OCDEM, Radcliffe Department of Medicine, University of Oxford, Oxford, UK.
Article Synopsis
- Gastroenteropancreatic neuroendocrine tumors (GEP-NETs) can be either hormone-secreting or non-secreting, have serious health implications, and an average survival of 75-124 months.
- Research shows that key genes involved in the tumor's development, especially epigenetic regulators like MEN1, DAXX, and ATRX, are often mutated, but their effects are not well understood.
- The calcium sensing receptor (CaSR) is significantly reduced in GEP-NETs, potentially due to DNA methylation and chromatin modifications, suggesting it functions as a tumor suppressor by inhibiting cell growth in pancreatic NETs.
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