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Nitric oxide permits hypoxia-induced lymphatic perfusion by controlling arterial-lymphatic conduits in zebrafish and glass catfish
Södertörns högskola, Institutionen för livsvetenskaper, Molekylärbiologi.
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2009 (Engelska)Ingår i: Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, E-ISSN 1091-6490, Vol. 106, nr 43, s. 18408-18413Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The blood and lymphatic vasculatures are structurally and functionally coupled in controlling tissue perfusion, extracellular interstitial fluids, and immune surveillance. Little is known, however, about the molecular mechanisms that underlie the regulation of bloodlymphatic vessel connections and lymphatic perfusion. Here we show in the adult zebrafish and glass catfish (Kryptopterus bicirrhis) that blood-lymphatic conduits directly connect arterial vessels to the lymphatic system. Under hypoxic conditions, arterial-lymphatic conduits (ALCs) became highly dilated and linearized by NO-induced vascular relaxation, which led to blood perfusion into the lymphatic system. NO blockage almost completely abrogated hypoxia-induced ALC relaxation and lymphatic perfusion. These findings uncover mechanisms underlying hypoxia-induced oxygen compensation by perfusion of existing lymphatics in fish. Our results might also imply that the hypoxia-induced NO pathway contributes to development of progression of pathologies, including promotion of lymphatic metastasis by modulating arterial-lymphatic conduits, in the mammalian system.

Ort, förlag, år, upplaga, sidor
2009. Vol. 106, nr 43, s. 18408-18413
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Biologiska vetenskaper
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URN: urn:nbn:se:sh:diva-13879DOI: 10.1073/pnas.0907608106ISI: 000271222500066PubMedID: 19822749Scopus ID: 2-s2.0-70849085474OAI: oai:DiVA.org:sh-13879DiVA, id: diva2:465588
Tillgänglig från: 2011-12-14 Skapad: 2011-12-14 Senast uppdaterad: 2017-07-18Bibliografiskt granskad

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Söll, IrisHauptmann, Giselbert

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Proceedings of the National Academy of Sciences of the United States of America
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