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Scherer, T.* ; Metz, M.* ; Beghini, M.* ; Bilban, M.* ; Gensthaler, L.* ; Luca, A.C.* ; Kaplanian, M.* ; Abu Eid, S.* ; Koldyka, O.* ; Hackl, M.T.* ; Dürr, S.* ; Rivelles, E.* ; Schönecker, S.S.* ; Pöltl, L.* ; Kaya, A.* ; Chami, R.* ; Nusko, L.* ; Tschare, C.* ; Ablaza, K.* ; Höbler, A.L.* ; Klimek, P.* ; Leutner, M.* ; Yamamoto, M.* ; Suzuki, N.* ; Stemmer, K. ; Zeyda, M.* ; Steinacher, D.* ; Nics, L.* ; Müller, A.M.S.* ; Helbich, T.H.* ; Moriggl, R.* ; Kautzky-Willer, A.* ; Windberger, U.* ; Prager, G.* ; Fürnsinn, C.*

A direct effect of the hematocrit on blood glucose: Evidence from hypoxia- and erythropoietin-treated mice.

Sci. Adv. 11:eadt7366 (2025)
Publ. Version/Full Text DOI PMC
Open Access Gold
Creative Commons Lizenzvertrag
Blood glucose is lower in mountain dwellers living under low partial oxygen pressure. We show that obese mice maintained under hypoxia exhibit a delayed but distinct decrease in blood glucose with improved insulin sensitivity, which is independent of changes in body weight. This effect of hypoxia is mediated by erythropoiesis and is a direct result of the rising hematocrit, which could be due to erythrocytes acting as carriers of glucose units in the blood. Glucose lowering by the red cell mass is evidenced by a prompt decrease in glycemia in mice receiving a blood transfusion. Furthermore, life under hypoxia as well as treatment with erythropoietin reduce glycemia also in mice expressing the erythropoietin receptor exclusively in hematopoietic cells, which contrasts with previous assumptions attributing metabolic actions of erythropoietin to direct action on nonhematopoietic tissues. Our results provide a rationale for associations between hematocrit and blood glucose in humans under anti-anemic therapy, polycythemia, smoking, and high-altitude exposure.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords Recombinant-human-erythropoietin; Inverse Association; Insulin Sensitivity; High-altitude; Homeostasis; Testosterone; Performance; Expression; Obesity; Diet
ISSN (print) / ISBN 2375-2548
e-ISSN 2375-2548
Quellenangaben Volume: 11, Issue: 16, Pages: , Article Number: eadt7366 Supplement: ,
Publisher American Association for the Advancement of Science (AAAS)
Publishing Place Washington, DC [u.a.]
Non-patent literature Publications
Reviewing status Peer reviewed
Grants Skolkovo (Moskow School of Management, Russia)
Austrian Science Fund (FWF)