Results 111 to 120 of about 264,616 (357)

Sleep Loss Promotes Astrocytic Phagocytosis and Microglial Activation in Mouse Cerebral Cortex

Journal of Neuroscience, 2017
We previously found that Mertk and its ligand Gas6, astrocytic genes involved in phagocytosis, are upregulated after acute sleep deprivation. These results suggested that astrocytes may engage in phagocytic activity during extended wake, but direct ...
M. Bellesi, L. de Vivo, M. Chini, F. Gilli, G. Tononi, C. Cirelli   +5 more
semanticscholar   +1 more source

Autophagy Meets Phagocytosis [PDF]

Immunity, 2013
Autophagy can degrade intracellular bacteria, but how this pathway contributes to phagocytosis is unclear. In this issue of Immunity, Bonilla et al. (2013) demonstrate an additional role for autophagy in Mycobacterium tuberculosis internalization by macrophages.
Jennifer A. Philips, Ken Cadwell
openaire   +2 more sources

Matrix Viscoelasticity Orchestrates Osteogenesis via Mechanotransduction Mediated Metabolic Switch in Macrophages

Advanced Healthcare Materials, EarlyView.
Fast‐relaxation viscoelastic hydrogel triggers a metabolic shift in macrophages, favoring oxidative phosphorylation (OXPHOS) over glycolysis via vasodilator‐stimulated phosphoprotein (VASP) / hypoxia‐inducible factor 1 alpha (HIF1α) signaling meditated mechanotransdution, thereby enhancing their capacity to recruit mesenchymal stem cells (MSCs) and ...
Dihao Tao, Hanzhe Wang, Shiping Chang, Jiayu Cheng, Ningning Da, Li Zhang, Jianhua Yang, Wenzhe Wang, Feng Xu, Bei Li   +9 more
wiley   +1 more source

The zipper mechanism in phagocytosis: energetic requirements and variability in phagocytic cup shape [PDF]

arXiv, 2010
Phagocytosis is the fundamental cellular process by which eukaryotic cells bind and engulf particles by their cell membrane. Particle engulfment involves particle recognition by cell-surface receptors, signaling and remodeling of the actin cytoskeleton to guide the membrane around the particle in a zipper-like fashion. Despite the signaling complexity,
arxiv  

Coupling of β2 integrins to actin by a mechanosensitive molecular clutch drives complement receptor-mediated phagocytosis

Nature Cell Biology, 2019
αMβ2 integrin (complement receptor 3) is a major receptor for phagocytosis in macrophages. In other contexts, integrins’ activities and functions are mechanically linked to actin dynamics through focal adhesions.
Valentin Jaumouillé, A. Cartagena-Rivera, Clare M. Waterman   +2 more
semanticscholar   +1 more source

A Dual‐Layer Hydrogel Barrier Integrating Bio‐Adhesive and Anti‐Adhesive Properties Prevents Postoperative Abdominal Adhesions

Advanced Healthcare Materials, EarlyView.
A new dual‐layer hydrogel barrier for preventing postoperative abdominal adhesions is developed. The inner layer, consisting of polyethyleneimine (PEI) and thioctic acid (TA), enhanced adhesion to moist tissues. The outer layer combines zwitterionic, thermoresponsive hyaluronic acid with anti‐inflammatory epigallocatechin gallate (EGCG) and forms a ...
Mena Asha Krishnan, Olawale A. Alimi, Mitchell Kuss, Tiffany N Razabdouski, Erika A Eksioglu, Bin Duan, Bo Liu   +6 more
wiley   +1 more source

Neurophagy, the phagocytosis of live neurons and synapses by glia, contributes to brain development and disease

The FEBS Journal, 2018
It was previously thought that neurons were phagocytosed only when dead or dying. However, it is increasingly clear that viable synapses, dendrites, axons and whole neurons can be phagocytosed alive (defined here as neurophagy), and this may contribute ...
A. Vilalta, Guy C. Brown
semanticscholar   +1 more source

Development of Itaconate Polymers Microparticles for Intracellular Regulation of Pro‐Inflammatory Macrophage Activation

Advanced Healthcare Materials, EarlyView.
This study develops itaconate‐based polymer microparticles (IA‐MPs) for macrophage‐targeted intracellular delivery, overcoming the limitations of traditional itaconate administration. IA‐MPs achieve controlled release through phagocytosis, reducing pro‐inflammatory cytokine expression and reprogramming macrophage metabolism toward glycolysis.
Kaitlyn E. Woodworth, Zachary S.C.S. Froom, Natasha D. Osborne, Christian N. Rempe, Brenden Wheeler, Kyle Medd, Neal I. Callaghan, Huikang Qian, Abhinav P. Acharya, Carlie Charron, Locke Davenport Huyer   +10 more
wiley   +1 more source

Effects of nanoparticles on murine macrophages [PDF]

, 2011
Metallic nanoparticles are more and more widely used in an increasing number of applications. Consequently, they are more and more present in the environment, and the risk that they may represent for human health must be evaluated. This requires to increase our knowledge of the cellular responses to nanoparticles. In this context, macrophages appear as
arxiv   +1 more source

Defective bacterial phagocytosis is associated with dysfunctional mitochondria in COPD macrophages

European Respiratory Journal, 2019
Increased reactive oxygen species (ROS) have been implicated in the pathophysiology of chronic obstructive pulmonary disease (COPD). This study examined the effect of exogenous and endogenous oxidative stress on macrophage phagocytosis in patients with ...
K. Belchamber, Richa Singh, Craig M. Batista, M. Whyte, D. Dockrell, I. Kilty, M. Robinson, J. Wedzicha, P. Barnes, L. Donnelly   +9 more
semanticscholar   +1 more source