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How well do empirical molecular mechanics force fields model the cholesterol condensing effect?
J Chem Phys
January 2025
School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom.
Membrane properties are determined in part by lipid composition, and cholesterol plays a large role in determining these properties. Cellular membranes show a diverse range of cholesterol compositions, the effects of which include alterations to cellular biomechanics, lipid raft formation, membrane fusion, signaling pathways, metabolism, pharmaceutical therapeutic efficacy, and disease onset. In addition, cholesterol plays an important role in non-cellular membranes, with its concentration in the skin lipid matrix being implicated in several skin diseases.
View Article and Find Full Text PDFSkeletal organoids.
Biomater Transl
November 2024
Organoid Research Center, Institute of Translational Medicine, Shanghai University, Shanghai, China.
The skeletal system, composed of bones, muscles, joints, ligaments, and tendons, serves as the foundation for maintaining human posture, mobility, and overall biomechanical functionality. However, with ageing, chronic overuse, and acute injuries, conditions such as osteoarthritis, intervertebral disc degeneration, muscle atrophy, and ligament or tendon tears have become increasingly prevalent and pose serious clinical challenges. These disorders not only result in pain, functional loss, and a marked reduction in patients' quality of life but also impose substantial social and economic burdens.
View Article and Find Full Text PDFBiomechanical and Functional Features of the Carrier Erythrocytes Prolonging Circulation Time of Biotherapeutic Targeted to Glycophorin A.
Bioconjug Chem
January 2025
Department of Pharmacology, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104-5127, United States.
Red blood cells (RBCs) serve as natural transporters and can be modified to enhance the pharmacokinetics and pharmacodynamics of a protein cargo. Affinity targeting of Factor IX (FIX) to the RBC membrane is a promising approach to improve the (pro)enzyme's pharmacokinetics. For RBC targeting, purified human FIX was conjugated to the anti-mouse glycophorin A monoclonal antibody Ter119.
View Article and Find Full Text PDFEffects of a video-supported Cawthorne-Cooksey exercise program in older adults with balance deficits and dizziness: A preliminary randomised pilot study.
Australas J Ageing
March 2025
Department of Physiotherapy, Faculty of Health Sciences, International Hellenic University - Alexander Campus, Thessaloniki, Greece.
Objectives: To determine the safety and efficacy of a video-supported Cawthorne-Cooksey exercise program (CCEP) in improving balance, dizziness and decreasing fear of falling in older adults with balance deficits and dizziness.
Methods: Thirty-two older adults were divided into two groups (intervention and control). The intervention group followed a video-supported CCEP group, while the control group received written instructions to maintain their usual activity and counselling on fall prevention.
Finite Element Analysis of Proximal Femoral Bionic Nail (PFBN), Proximal Femoral Nail Antirotation and InterTan for Treatment of Reverse Obliquity Intertrochanteric Fractures.
Orthop Surg
January 2025
Department of Trauma and Orthopeadics, Peking University People's Hospital, Beijing, People's Republic of China.
Objective: Reverse obliquity intertrochanteric fracture is an unstable type of fracture. Current guidelines recommend intramedullary fixation, but there are still complications such as screw removal, hip varus, nail withdrawal, and nail fracture. The objective of this study was to use finite element analysis to compare the biomechanical properties of the novel proximal femoral bionic nail (PFBN), proximal femoral nail antirotation (PFNA), and combined compression interlocking intramedullary nail (InterTan) in the treatment of reverse obliquity intertrochanteric fractures (AO/OTA 31-A3.
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