Hypobaric hypoxia exposure initiates splenic ferroptosis, reducing red pulp macrophages and exacerbating high-altitude polycythemia by impairing erythrophagocytosis and increasing red blood cell retention.
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.
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.
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.
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.
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.
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.