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    1. Medicine
    2. Immunology and Inflammation

    Chronic muscle weakness and mitochondrial dysfunction in the absence of sustained atrophy in a preclinical sepsis model

    Allison M Owen et al.
    Sepsis-induced long-term muscle weakness was reproduced using a refined murine model, which was accompanied by mitochondrial dysfunction in the absence of sustained atrophy, suggesting the promise of mitochondria-targeted post-sepsis therapies.
    1. Genetics and Genomics
    2. Immunology and Inflammation

    Siglec receptors impact mammalian lifespan by modulating oxidative stress

    Flavio Schwarz et al.
    By contributing to the maintenance of ROS homeostasis, CD33-related Siglecs control oxidative damage and influence rate of aging and lifespan.
    1. Developmental Biology
    2. Neuroscience

    Maintenance of age in human neurons generated by microRNA-based neuronal conversion of fibroblasts

    Christine J Huh et al.
    MicroRNA-based direct conversion of human fibroblasts to neurons is applicable to fibroblasts from donors ranging in age from neonatal to centenarian, allowing the generation of neurons that maintain the age-associated signatures of the starting fibroblasts.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Bedrock radioactivity influences the rate and spectrum of mutation

    Nathanaëlle Saclier et al.
    Subterranean isopods endemic to regions with large igneous rock formations have a higher mutation rate and display an excess of mutations that are typical of an oxidative stress.
    1. Cell Biology
    2. Neuroscience

    Degradation of engulfed mitochondria is rate-limiting in Optineurin-mediated mitophagy in neurons

    Chantell S Evans, Erika LF Holzbaur
    In neuronal mitophagy, Parkin and OPTN induce efficient sequestration of damaged somal mitochondria into autophagosomes, but slow turnover via lysosomal acidification may be a point of vulnerability for the cell.
    1. Cell Biology

    Rab5 and Alsin regulate stress-activated cytoprotective signaling on mitochondria

    FoSheng Hsu et al.
    Oxidative stress leads to the translocation of Rab5 from endosome to mitochondria, regulated by ALS/Alsin, a component associated with amyotrophic lateral sclerosis, leading to mitochondrial-endosomal physical contacts and a cytoprotective response.
    1. Medicine

    Myocardial NADPH oxidase-4 regulates the physiological response to acute exercise

    Matthew Hancock et al.
    Cardiomyocyte Nox4 is a crucial physiological mediator of Nrf2 activation during acute exercise, triggering an adaptive response that preserves redox balance, mitochondrial and cardiac function to support normal physical exercise.
    1. Ecology
    2. Microbiology and Infectious Disease

    Subcellular tracking reveals the location of dimethylsulfoniopropionate in microalgae and visualises its uptake by marine bacteria

    Jean-Baptiste Raina et al.
    The intracellular location of a key sulfur compound, dimethylsulfoniopropionate, was identified in microalgae and its subsequent uptake by marine bacteria was quantified using a combination of secondary-ion mass-spectrometry techniques.
    1. Cell Biology
    2. Stem Cells and Regenerative Medicine

    Oxidative stress induces stem cell proliferation via TRPA1/RyR-mediated Ca2+ signaling in the Drosophila midgut

    Chiwei Xu et al.
    In response to tissue damage, reactive oxygen species can be sensed by cation channels TRPA1/RyR to cause increases of cytosolic Ca2+ in intestinal stem cells, activating Ras/MAPK activity and stimulating stem cell proliferation in Drosophila.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    Neuroprotective effects of TRPA1 channels in the cerebral endothelium following ischemic stroke

    Paulo Wagner Pires, Scott Earley
    Acute hypoxia activates TRPA1 channels in cerebral artery endothelial cells to activate an early adaptive response to reduce tissue ischemic damage through vasodilation.