1,176 results found
    1. Cell Biology

    High-altitude hypoxia exposure inhibits erythrophagocytosis by inducing macrophage ferroptosis in the spleen

    Wan-ping Yang, Mei-qi Li ... Qian-qian Luo
    Hypobaric hypoxia exposure initiates splenic ferroptosis, reducing red pulp macrophages and exacerbating high-altitude polycythemia by impairing erythrophagocytosis and increasing red blood cell retention.
    1. Evolutionary Biology

    Convergent changes in muscle metabolism depend on duration of high-altitude ancestry across Andean waterfowl

    Neal J Dawson, Luis Alza ... Kevin G McCracken
    Changes in pathways of lipid oxidation, glycolysis, and mitochondrial oxidative phosphorylation are common strategies to cope with high-altitude hypoxia, but some changes require longer evolutionary time to arise.
    1. Evolutionary Biology

    Sex-biased regulatory changes in the placenta of native highlanders contribute to adaptive fetal development

    Tian Yue, Yongbo Guo ... Bing Su
    Comparative transcriptome analyses of human placenta reveal regulatory divergence between native highlanders and lowland immigrants living at high altitude, and a sex-biased pattern of genetic adaptation.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Archaic introgression contributed to shape the adaptive modulation of angiogenesis and cardiovascular traits in human high-altitude populations from the Himalayas

    Giulia Ferraretti, Paolo Abondio ... Marco Sazzini
    A combination of composite-likelihood and gene network-based methods to investigate the impact of Denisovan introgression on the evolution of complex (i.e., polygenic) adaptive traits in high-altitude populations of Tibetan/Sherpa ancestry.
    1. Ecology
    2. Evolutionary Biology

    Reduced metabolism supports hypoxic flight in the high-flying bar-headed goose (Anser indicus)

    Jessica U Meir, Julia M York ... William K Milsom
    Measurements of bar-headed geese flying in a wind tunnel in hypoxia reveal that these birds sustain aerobic flight at high altitude via a reduction in metabolism.
    1. Biochemistry and Chemical Biology
    2. Evolutionary Biology

    Survival of mineral-bound peptides into the Miocene

    Beatrice Demarchi, Meaghan Mackie ... Julia Clarke
    Ostrich eggshell from the Liushu Formation in northwestern China push ancient protein preservation into the Miocene.
    1. Computational and Systems Biology

    Derivation and internal validation of prediction models for pulmonary hypertension risk assessment in a cohort inhabiting Tibet, China

    Junhui Tang, Rui Yang ... Yali Xu
    Prediction models for pulmonary hypertension based on a cohort inhabiting Tibet, China were established and validated.
    1. Ecology
    2. Evolutionary Biology

    Physiology: The highs and lows of bird flight

    Jon Harrison
    Bar-headed geese lower their flight metabolic rates to fly in low-oxygen conditions.
    Version of Record
    Insight
    1. Evolutionary Biology
    2. Genetics and Genomics

    The genomic legacy of aurochs hybridisation in ancient and modern Iberian cattle

    Torsten Günther, Jacob Chisausky ... Cristina Valdiosera
    After their introduction to the Iberian peninsula, domestic cattle hybridised with mostly male wild aurochs for millennia until human actions likely ended this process about 4000 years ago.
    1. Ecology

    A circadian clock drives behavioral activity in Antarctic krill (Euphausia superba) and provides a potential mechanism for seasonal timing

    Lukas Hüppe, Dominik Bahlburg ... Bettina Meyer
    Behavioral experiments provide strong evidence that krill swimming behavior is controlled by biological clocks throughout the year, revealing a key mechanism for adaptation to high-latitude habitats.

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