395 results found
    1. Neuroscience

    Ultrastructural analysis of adult mouse neocortex comparing aldehyde perfusion with cryo fixation

    Natalya Korogod et al.
    Snap-freezing of brain tissue reveals its true structure-showing that cells are less squashed together, and the connections between neurons are less enclosed than previously thought.
    1. Cell Biology
    2. Plant Biology

    From plasmodesma geometry to effective symplasmic permeability through biophysical modelling

    Eva E Deinum et al.
    A new biophysical model enables the reconciliation of ultrastructural and tissue level measurements on parameters affecting intercellular communication, and provides novel functional insight into experimental findings.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    A high-resolution morphological and ultrastructural map of anterior sensory cilia and glia in Caenorhabditis elegans

    David B Doroquez et al.
    The three-dimensional structures of 50 sensory cilia present in the head of the adult C. elegans hermaphrodite have been reconstructed to provide a foundation for investigations into the mechanisms by which the diversity of cilia structures is generated and how this structural diversity is related to specific sensory neuron functions.
    1. Neuroscience

    Ultrastructural heterogeneity of layer 4 excitatory synaptic boutons in the adult human temporal lobe neocortex

    Rachida Yakoubi et al.
    Neocortical synapses in layer 4 of the human temporal lobe neocortex were quantitatively characterized, at the subcellular level, using high-end, high-resolution electron microscopy and 3D-volume reconstructions.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    High-quality ultrastructural preservation using cryofixation for 3D electron microscopy of genetically labeled tissues

    Tin Ki Tsang et al.
    A broadly applicable method that faithfully preserves genetically labeled cellular structures for 3D electron microscopy (EM) and correlated light and electron microscopy (CLEM).
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Changes of mitochondrial ultrastructure and function during ageing in mice and Drosophila

    Tobias Brandt et al.
    Respiratory activity and inner membrane organisation of mitochondria from Drosophila melanogaster break down during ageing, but mouse heart mitochondria appear to be protected against age-related damage.
    1. Cell Biology
    2. Neuroscience

    Modeling of axonal endoplasmic reticulum network by spastic paraplegia proteins

    Belgin Yalçın et al.
    Proteins of the reticulon and REEP families, homologous to the products of human Hereditary Spastic Paraplegia disease genes, contribute to shaping and continuity of the axonal endoplasmic reticulum network in Drosophila.
    1. Neuroscience

    Structural plasticity of dendritic secretory compartments during LTP-induced synaptogenesis

    Yelena D Kulik et al.
    The secretory and recycling components of neuronal dendrites, smooth endoplasmic reticulum and endosomes, were discovered to support synaptogenesis underlying a cellular mechanism of learning and memory in the developing brain.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    Molecular and topological reorganizations in mitochondrial architecture interplay during Bax-mediated steps of apoptosis

    Nicholas R Ader et al.
    Correlative microscopy and electron cryo-tomography on apoptotic HeLa cells reveal remodeling of outer and inner mitochondrial membranes, Bax cluster ultrastructure and ATP synthase reorganization in ruptured mitochondria.
    1. Neuroscience

    Oligodendrocyte-encoded Kir4.1 function is required for axonal integrity

    Lucas Schirmer et al.
    Ultrastructural and loss-of-function experiments show that oligodendrocyte-encoded Kir4.1 is located near active axonal structures, including within myelin inner tongue, and has critical functions to promote axonal activity and preserve integrity.

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