1,036 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. Neuroscience

    Reactive oxygen species regulate activity-dependent neuronal plasticity in Drosophila

    Matthew CW Oswald et al.
    Reactive oxygen species, previously considered damaging agents linked to pathology, are required for normal neuronal plasticity, including adjustment of synaptic terminal size, maintenance of synaptic physiology and adaptive behavioural responses.
    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. 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. 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

    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. Neuroscience

    More homogeneous capillary flow and oxygenation in deeper cortical layers correlate with increased oxygen extraction

    Baoqiang Li et al.
    Resting-state capillary blood flow and oxygenation are more homogeneous in the deeper cortical layers, underpinning an important mechanism by which the microvascular network adapts to an increased local oxidative metabolism.
    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.

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