754 results found
    1. Evolutionary Biology

    Evolution: Oxygen and early animals

    Kalle T Rytkönen
    The biology of sponges provides clues about how early animals may have dealt with low levels of oxygen.
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    1. Evolutionary Biology

    The last common ancestor of animals lacked the HIF pathway and respired in low-oxygen environments

    Daniel B Mills et al.
    Sponges and ctenophores lack hypoxia-inducible factors, suggesting that the metazoan last common ancestor could have lived aerobically under severe hypoxia and did not need to regulate its transcription in response to oxygen availability.
    1. Plant Biology

    Phosphoprotein SAK1 is a regulator of acclimation to singlet oxygen in Chlamydomonas reinhardtii

    Setsuko Wakao et al.
    SAK1, a novel cytoplasmic phosphoprotein, is a key intermediate component of the retrograde signaling pathway controlling nuclear gene expression during acclimation of Chlamydomonas cells to singlet oxygen stress.
    1. Human Biology and Medicine
    2. Neuroscience

    Mapping oxygen concentration in the awake mouse brain

    Declan G Lyons et al.
    Two-photon phosphorescence lifetime microscopy reveals the physiological values of oxygen concentration and blood flow parameters in the brains of awake mice.
    1. Cell Biology
    2. Stem Cells and Regenerative Medicine

    Environmental changes in oxygen tension reveal ROS-dependent neurogenesis and regeneration in the adult newt brain

    L Shahul Hameed et al.
    Control of neural stem cells by reactive oxygen species (ROS) provides a link between systemic shifts in oxygen tension and neuronal regeneration, and suggests an evolutionary driving force for the inherent ability of newts to regenerate their brain cells.
    1. Cell Biology

    Damage-induced reactive oxygen species regulate vimentin and dynamic collagen-based projections to mediate wound repair

    Danny LeBert et al.
    Live real time imaging and perturbation experiments reveal how vimentin integrates with early damage induced reactive oxygen species to mediate collagen rearrangements and epithelial cell projections during wound repair and regeneration.
    1. Developmental Biology

    Evolutionary Developmental Biology: Sensing oxygen inside and out

    Maria R Stupnikov, Wellington V Cardoso
    Neuroendocrine cells act as oxygen sensors in animals from fish to humans, but the evolutionary origins of these cells are only just becoming clear.
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    1. Stem Cells and Regenerative Medicine

    Reactive oxygen species-dependent Toll/NF-κB activation in the Drosophila hematopoietic niche confers resistance to wasp parasitism

    Isabelle Louradour et al.
    In the Drosophila hematopoietic microenvironment, a regulatory network involving Toll/NF-B, EGFR signaling and reactive oxygen species controls blood cell production in response to immune stress.
    1. Human Biology and Medicine

    Human cardiac fibroblasts adaptive responses to controlled combined mechanical strain and oxygen changes in vitro

    Giovanni Stefano Ugolini et al.
    Human cardiac fibroblasts regulate their cellular responses according to the combination of multiple environmental stimuli namely oxygen changes and mechanical signals.
    1. Microbiology and Infectious Disease

    Biofilms: Take my breath away

    Vinai C Thomas, Paul D Fey
    A lack of oxygen activates a pathway that causes the bacterial cell wall to break down, which, in turn, aids bacterial biofilm development.
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