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The Role of Re-Entrant Microstructures in Modulating Droplet Evaporation Modes.
Micromachines (Basel)
December 2024
Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan Campus, 170 Kessels Road, Brisbane, QLD 4111, Australia.
The evaporation dynamics of sessile droplets on re-entrant microstructures are critical for applications in microfluidics, thermal management, and self-cleaning surfaces. Re-entrant structures, such as mushroom-like shapes with overhanging features, trap air beneath droplets to enhance non-wettability. The present study examines the evaporation of a water droplet on silicon carbide (SiC) and silicon dioxide (SiO) re-entrant structures, focusing on the effects of material composition and solid area fraction on volume reduction, contact angle, and evaporation modes.
View Article and Find Full Text PDFIt is well known that activation of NMDA receptors can trigger long-term synaptic depression (LTD) and that a morphological correlate of this functional plasticity is spine retraction and elimination. Recent studies have led to the surprising conclusion that NMDA-induced spine shrinkage proceeds independently of ion flux and requires the initiation of protein synthesis, highlighting an unappreciated contribution of mRNA translation to non-ionotropic NMDAR signaling. Here we used NMDA-induced spine shrinkage in slices of mouse hippocampus as a readout to investigate this novel modality of synaptic transmission.
View Article and Find Full Text PDFMigrasome formation is initiated preferentially in tubular junctions by membrane tension.
Biophys J
January 2025
Department of Physiology and Pharmacology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Center for Physics and Chemistry of Living Systems, Tel Aviv University, Tel Aviv, Israel. Electronic address:
Migrasomes, the vesicle-like membrane micro-structures, arise on the retraction fibers (RFs), the branched nano-tubules pulled out of cell plasma membranes during cell migration and shaped by membrane tension. Migrasomes form in two steps: a local RF bulging is followed by a protein-dependent stabilization of the emerging spherical bulge. Here we addressed theoretically and experimentally the previously unexplored mechanism of bulging of membrane tubular systems.
View Article and Find Full Text PDFInvestigation the effect of rigid taping on knee and hip joint kinematics in chronic stroke patients with knee hyperextension gait.
Gait Posture
December 2024
Faculty of Medicine, Neurology Department, Hacettepe University, Ankara, Turkey.
Background: Although stroke patients gain an advantage in gait due to the knee hyperextension that occurs during the stance phase, this situation disrupts the biomechanical structure of the knee and increases the risk of injury to the capsular and ligamentous structures. The aim of this study was to examine the effects of rigid taping on hyperextension control and pelvic kinematics in stroke patients with knee hyperextension during the stance phase of gait.
Research Question: Does rigid taping have an effect on hyperextension control and pelvic kinematics in stroke patients with knee hyperextension?
Methods: Thirty stroke patients aged between 40 and 70 were included in this pre-postintervention study.
Dendritic pathology and overexpression of MAP2 in Purkinje cells from mice inoculated with rabies virus.
J Mol Histol
December 2024
Grupo de Morfología Celular, Instituto Nacional de Salud (INS), Av. Calle 26 No. 51-20, Bogotá, DC, 111321, Colombia.
The effect of rabies virus infection on dendritic morphology and on the expression of the MAP2 protein in Purkinje cells in the cerebellum of mice was studied. ICR mice were inoculated with rabies virus, and six days later, the mice were sacrificed, the cerebellum was removed and processed for Golgi-Cox staining or MAP2 immunohistochemistry. Infection with rabies virus altered the dendritic pattern of Purkinje cells ranged from moderate changes to accentuated retraction in the dendritic tree of some Purkinje cells.
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