Results 11 to 20 of about 498,271 (378)

Inceptor facilitates acrosomal vesicle formation in spermatids and is required for male fertility

open access: yesFrontiers in Cell and Developmental Biology, 2023
Spermatogenesis is a crucial biological process that enables the production of functional sperm, allowing for successful reproduction. Proper germ cell differentiation and maturation require tight regulation of hormonal signals, cellular signaling ...
Sara Bilekova   +18 more
doaj   +1 more source

Liposomes encapsulating polymeric chitosan based vesicles - a vesicle in vesicle system for drug delivery [PDF]

open access: yes, 2000
Drug delivery systems comprising vesicles prepared from one amphiphile encapsulating vesicles prepared from a second amphiphile have not been prepared previously due to a tendency of the bilayer components of the different vesicles to mix during ...
Dufès, Christine   +3 more
core   +1 more source

Dynamic shapes of floppy vesicles enclosing active Brownian particles with membrane adhesion [PDF]

open access: yesSoft Matter 19, 3436-3449 (2023), 2023
Recent advances in micro- and nano-technologies allow the construction of complex active systems from biological and synthetic materials. An interesting example is active vesicles, which consist of a membrane enclosing self-propelled particles, and exhibit several features resembling biological cells.
arxiv   +1 more source

Activity-dependence of synaptic vesicle dynamics [PDF]

open access: yes, 2017
The proper function of synapses relies on efficient recycling of synaptic vesicles. The small size of synaptic boutons has hampered efforts to define the dynamical states of vesicles during recycling.
Forte, Luca A   +2 more
core   +2 more sources

Survival of red blood cells after transfusion: processes and consequences

open access: yesFrontiers in Physiology, 2013
The currently available data suggest that efforts towards improving the quality of red blood cell (RBC) blood bank products should concentrate on: (1) preventing the removal of a considerable fraction of the transfused RBCs that takes place within the ...
Giel eBosman
doaj   +1 more source

Membrane trafficking in health and disease

open access: yesDisease Models & Mechanisms, 2020
Membrane trafficking pathways are essential for the viability and growth of cells, and play a major role in the interaction of cells with their environment.
Rebecca Yarwood   +3 more
doaj   +1 more source

Coordinated oscillations in cortical actin and Ca2+ correlate with cycles of vesicle secretion. [PDF]

open access: yes, 2012
The actin cortex both facilitates and hinders the exocytosis of secretory granules. How cells consolidate these two opposing roles was not well understood. Here we show that antigen activation of mast cells induces oscillations in Ca(2+) and PtdIns(4,5)P(
Meyer, T, Wollman, R
core   +1 more source

Adhesion of vesicles

open access: yesPhysical Review A, 1990
A simple model for the adhesion of vesicles to interfaces and membranes is introduced and theoretically studied. It is shown that adhering (or bound) vesicles can exhibit a large variety of different shapes. The notion of a contact angle governed by tension is found to be applicable only for a restricted subset of these shapes. Furthermore, the vesicle
Udo Seifert   +3 more
openaire   +5 more sources

A Self-Assembled Aggregate Composed of a Fatty Acid Membrane and the Building Blocks of Biological Polymers Provides a First Step in the Emergence of Protocells

open access: yesLife, 2016
We propose that the first step in the origin of cellular life on Earth was the self-assembly of fatty acids with the building blocks of RNA and protein, resulting in a stable aggregate.
Roy A. Black, Matthew C. Blosser
doaj   +1 more source

SNARE-Mediated Exocytosis in Neuronal Development

open access: yesFrontiers in Molecular Neuroscience, 2020
The formation of the nervous system involves establishing complex networks of synaptic connections between proper partners. This developmental undertaking requires the rapid expansion of the plasma membrane surface area as neurons grow and polarize ...
Fabio L. Urbina   +4 more
doaj   +1 more source

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