1,724 results found
    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. Ecology

    Biophysical and physiological processes causing oxygen loss from coral reefs

    Cynthia B Silveira et al.
    Coral reef heterotrophic bacteria and fleshy macroalgae cause oxygen loss from reef systems through microbial biomass accumulation and ebullition from algae surfaces.
    1. 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. Biochemistry and Chemical Biology
    2. Neuroscience

    Phasic oxygen dynamics confounds fast choline-sensitive biosensor signals in the brain of behaving rodents

    Ricardo M Santos, Anton Sirota
    Fast fluctuations of oxygen, linked to behavioral and neural dynamics in vivo, cause phasic transients is amperometry-measured cholinergic signals via the mechanism of non-steady-state enzyme kinetics in the choline-oxidase-based biosensor.
    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

    Regulator of G protein signaling 12 enhances osteoclastogenesis by suppressing Nrf2-dependent antioxidant proteins to promote the generation of reactive oxygen species

    Andrew Ying Hui Ng et al.
    Rgs12 protein is a novel regulator of the Nrf2 protein by facilitating the proteasomal degradation of the transcription factor during osteoclast differentiation.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    Reactive oxygen species oxidize STING and suppress interferon production

    Lili Tao et al.
    Redox modification of STING represents a novel target for interferon regulation and control of herpesvirus replication.
    1. 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. Ecology

    Oxygen isotopes suggest elevated thermometabolism within multiple Permo-Triassic therapsid clades

    Kévin Rey et al.
    Two therapsid clades, dicynodonts and cynodonts, independently acquired and developed an endotherm-like thermoregulation during the Late Permian period, that probably helped them to survive the major global climate and environmental fluctuations of the end-Permian.

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