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Unlabelled: Cytoplasmic proteins must recruit to membranes to function in processes such as endocytosis and cell division. Many of these proteins recognize not only the chemical structure of the membrane lipids, but the curvature of the surface, binding more strongly to more highly curved surfaces, or 'curvature sensing'. Curvature sensing by amphipathic helices is known to vary with membrane bending rigidity, but changes to lipid composition can simultaneously alter membrane thickness, spontaneous curvature, and leaflet symmetry, thus far preventing a systematic characterization of lipid composition on such curvature sensing through either experiment or simulation.
View Article and Find Full Text PDFThe Unfulfilled Potential of Synthetic and Biological Hydrogel Membranes in the Treatment of Abdominal Hernias.
Gels
November 2024
Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó Street 37-47, H-1094 Budapest, Hungary.
Hydrogel membranes can offer a cutting-edge solution for abdominal hernia treatment. By combining favorable mechanical parameters, tissue integration, and the potential for targeted drug delivery, hydrogels are a promising alternative therapeutic option. The current review examines the application of hydrogel materials composed of synthetic and biological polymers, such as polyethylene glycol (PEG), polyvinyl alcohol (PVA), gelatine, and silk fibroin, in the context of hernia repair.
View Article and Find Full Text PDFAdhesion extent data of repaired rabbit Achilles tendons three weeks post-surgery and characterization data of different implant materials used for these surgeries.
Data Brief
December 2024
Division of Plastic Surgery and Hand Surgery, University Hospital Zurich, Sternwartstrasse 14, Zurich 8091, Switzerland.
As one major problem after tendon rupture repair, surgeons are confronted with fibrotic adhesion formation of the healing tendon to the surrounding tissue. Although early active motion is recommended during rehabilitation, adhesions may lead to joint stiffness and a restricted range of motion. One viable option to counteract adhesion formation is to add a thin elastic tube that is placed over the conventionally sutured repair site.
View Article and Find Full Text PDFModeling the mechanochemical feedback for membrane-protein interactions using a continuum mesh model.
Methods Enzymol
July 2024
Department of Mechanical and Aerospace Engineering, University of California San Diego, La Jolla, California, United States. Electronic address:
The Helfrich free energy is widely used to model the generation of membrane curvature due to different physical and chemical components. The governing equations resulting from the energy minimization procedure are a system of coupled higher order partial differential equations. Simulations of membrane deformation for obtaining quantitative comparisons against experimental observations require computational schemes that will allow us to solve these equations without restrictions to axisymmetric coordinates.
View Article and Find Full Text PDFBenefits of Aerosolized, Point-of-care, Autologous Skin Cell Suspension (ASCS) for the Closure of Full-thickness Wounds From Thermal and Nonthermal Causes: Learning Curves From the First 50 Consecutive Cases at an Urban, Level 1 Trauma Center.
Ann Surg
September 2024
Department of Pathology, WakeMed Health and Hospitals, Raleigh, NC.
Objective: To determine the utility of Autologous Skin Cell Suspension (ASCS) in closing full-thickness (FT) defects from injury and infection.
Background: Although ASCS has documented success in closing partial-thickness burns, far less is known about the efficacy of ASCS in FT defects.
Methods: Fifty consecutive patients with FT defects (burn 17, necrotizing infection 13, crush 7, degloving 5, and other 8) underwent closure with the bilayer technique of 3:1 widely meshed, thin, split-thickness skin graft and 80:1 expanded ASCS.
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