dc.date.accessioned | 2019-02-22T14:55:00Z | |
dc.date.available | 2019-02-22T14:55:00Z | |
dc.date.created | 2019-02-22T14:55:00Z | |
dc.date.issued | 2015 | |
dc.identifier | https://hdl.handle.net/20.500.12866/5702 | |
dc.identifier | https://doi.org/10.1089/ham.2014.1086 | |
dc.description.abstract | Long-term residence at high altitude is associated with the development of chronic mountain sickness (CMS), which is characterized by excessive erythrocytosis (EE). EE occurs under chronic hypoxia, and a strongly selected mutation in hypoxia-inducible factor 2α (HIF2A) has been found in native Tibetans that correlates with having a normal hemoglobin at high altitude. We sought to evaluate differences in plasma levels of four HIF-responsive proteins in 20 participants with EE (hemoglobin >21 g/dL in men and >19 in women) and in 20 healthy, age- and sex-matched participants without EE living at high altitude in Puno, Peru. We performed ELISA to measure plasma levels of the four HIF-responsive proteins: vascular endothelial growth factor (VEGF), soluble VEGF receptor 1 (sVEGF-R1), endothelin-1, and erythropoietin. As a secondary aim, we evaluated the association between HIF-responsive proteins and echocardiography-estimated pulmonary artery systolic pressure (PASP) in a subset of 26 participants. sVEGF-R1 was higher in participants with vs. without EE (mean 107 pg/mL vs. 90 pg/mL; p=0.007). Although plasma concentrations of endothelin-1, VEGF, and erythropoietin were higher in participants with vs. without EE, they did not achieve statistical significance (all p>0.25). Both sVEGF-R1 (p=0.04) and erythropoietin (p=0.04) were positively associated with PASP after adjustment for age, sex, and BMI. HIF-responsive proteins may play a pathophysiological role in altitude-related, chronic diseases but our results did not show consistent changes in all measured HIF-responsive proteins. Larger studies are needed to evaluate for additional genetic and environmental risk factors. | |
dc.language | eng | |
dc.publisher | Mary Ann Liebert | |
dc.relation | High Altitude Medicine and Biology | |
dc.relation | 1557-8682 | |
dc.rights | https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es | |
dc.rights | info:eu-repo/semantics/restrictedAccess | |
dc.subject | Peru | |
dc.subject | Adult | |
dc.subject | Female | |
dc.subject | Humans | |
dc.subject | Male | |
dc.subject | chronic mountain sickness | |
dc.subject | Aged | |
dc.subject | Middle Aged | |
dc.subject | Altitude | |
dc.subject | Altitude Sickness | |
dc.subject | Polycythemia | |
dc.subject | Case-Control Studies | |
dc.subject | Blood Pressure | |
dc.subject | pulmonary artery | |
dc.subject | Pulmonary Artery | |
dc.subject | erythrocytosis | |
dc.subject | polycythemia | |
dc.subject | excessive erythrocytosis | |
dc.subject | erythropoietin | |
dc.subject | hypoxia | |
dc.subject | blood pressure | |
dc.subject | altitude | |
dc.subject | Biomarkers | |
dc.subject | human | |
dc.subject | adult | |
dc.subject | aged | |
dc.subject | female | |
dc.subject | male | |
dc.subject | middle aged | |
dc.subject | Article | |
dc.subject | priority journal | |
dc.subject | Hypoxia | |
dc.subject | controlled study | |
dc.subject | blood | |
dc.subject | echocardiography | |
dc.subject | altitude disease | |
dc.subject | pulmonary hypertension | |
dc.subject | biological marker | |
dc.subject | case control study | |
dc.subject | VEGF | |
dc.subject | clinical article | |
dc.subject | hypoxia inducible factor | |
dc.subject | physiology | |
dc.subject | protein expression | |
dc.subject | vasculotropin receptor 1 | |
dc.subject | enzyme linked immunosorbent assay | |
dc.subject | Erythropoietin | |
dc.subject | C reactive protein | |
dc.subject | systolic blood pressure | |
dc.subject | basic helix loop helix transcription factor | |
dc.subject | Basic Helix-Loop-Helix Transcription Factors | |
dc.subject | endothelial PAS domain-containing protein 1 | |
dc.subject | endothelin 1 | |
dc.subject | Endothelin-1 | |
dc.subject | EPO | |
dc.subject | HIF | |
dc.subject | lung artery pressure | |
dc.subject | protein blood level | |
dc.subject | Vascular Endothelial Growth Factor Receptor-1 | |
dc.subject | Vascular Endothelial Growth Factors | |
dc.subject | vasculotropin | |
dc.title | Association between serum concentrations of hypoxia inducible factor responsive proteins and excessive erythrocytosis in high altitude Peru | |
dc.type | info:eu-repo/semantics/article | |