1,771 results found
    1. Neuroscience

    Test of the 'glymphatic' hypothesis demonstrates diffusive and aquaporin-4-independent solute transport in rodent brain parenchyma

    Alex J Smith et al.
    Solute movement in brain extracellular space is determined by solute diffusion, and does not depend on convection or aquaporin-4 expression as predicted by the glymphatic mechanism.
    1. Neuroscience

    Noninvasive quantification of axon radii using diffusion MRI

    Jelle Veraart et al.
    Cell-specific architectural properties such as the axon diameter of the white matter of the human brain can be quantified accurately and non-invasively using diffusion magnetic resonance imaging.
    1. Cell Biology

    A sphingolipid-dependent diffusion barrier confines ER stress to the yeast mother cell

    Lori Clay et al.
    Sphingolipids govern the compartmentalization of yeast cells through the assembly of lateral diffusion barriers in ER membranes.
    1. Computational and Systems Biology
    2. Developmental Biology

    High-throughput mathematical analysis identifies Turing networks for patterning with equally diffusing signals

    Luciano Marcon et al.
    Realistic reaction-diffusion signaling networks that include cell-autonomous factors can robustly form self-organizing spatial patterns for any combination of diffusion coefficients without requiring differential diffusivity.
    1. Neuroscience

    Effects of fluorescent glutamate indicators on neurotransmitter diffusion and uptake

    Moritz Armbruster et al.
    Fluorescent glutamate indicators distort the time course of neurotransmitter diffusion and uptake by competing with transporters, an important caveat to consider when using iGluSnFR and its analogs.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    A glucose-starvation response regulates the diffusion of macromolecules

    Ryan P Joyner et al.
    During stress conditions, eukaryotic cells dramatically alter their biophysical properties to regulate diffusion of macromolecules.
    1. Cell Biology

    Single molecule imaging reveals a major role for diffusion in the exploration of ciliary space by signaling receptors

    Fan Ye et al.
    Membrane receptor proteins move through primary cilia largely by passive diffusion rather than by active intraflagellar transport.
    1. Cancer Biology
    2. Physics of Living Systems

    Membrane interactions of the globular domain and the hypervariable region of KRAS4b define its unique diffusion behavior

    Debanjan Goswami et al.
    Compared to other isoforms of RAS, KRAS4b has unique membrane diffusion behavior related to its biology, and the two major domains of the protein both contribute to this diffusion behavior.
    1. Neuroscience

    Synaptic input sequence discrimination on behavioral timescales mediated by reaction-diffusion chemistry in dendrites

    Upinder Singh Bhalla
    The powerful computational operation of sequence recognition on behavioral timescales of approximately 1 s may emerge from synaptic activity-triggered build-up of biochemical waves in short 20 micron zones on dendrites.
    1. Physics of Living Systems
    2. Structural Biology and Molecular Biophysics

    High-throughput, single-particle tracking reveals nested membrane domains that dictate KRasG12D diffusion and trafficking

    Yerim Lee et al.
    The nanoscopic landscape of the membrane has a direct impact on the spatiotemporal, and likely also the signaling, dynamics of Ras proteins.

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