Estrogen inhibits vascular calcification in rats via hypoxia-induced factor-1α signaling

Objective Calcification serves as a surrogate for atherosclerosis-associated vascular diseases, and coronary artery calcification is mediated by multiple pathogenic factors. Estrogen is a known factor that protects the arterial wall against atherosclerosis, but its role in the coronary artery calcif...

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Published in:Vascular 2020-08, Vol.28 (4), p.465-474
Main Authors: Wu, Xinhua, Zhao, Qiuyan, Chen, Zhangrong, Geng, Yong-Jian, Zhang, Wanting, Zhou, Qingqing, Yang, Wei, Liu, Quanyi, Liu, Hong
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cited_by cdi_FETCH-LOGICAL-c401t-91f956201ec5c5c9305ac24c35ca3601f0657f8ba07203eb59489cc249b609073
cites cdi_FETCH-LOGICAL-c401t-91f956201ec5c5c9305ac24c35ca3601f0657f8ba07203eb59489cc249b609073
container_end_page 474
container_issue 4
container_start_page 465
container_title Vascular
container_volume 28
creator Wu, Xinhua
Zhao, Qiuyan
Chen, Zhangrong
Geng, Yong-Jian
Zhang, Wanting
Zhou, Qingqing
Yang, Wei
Liu, Quanyi
Liu, Hong
description Objective Calcification serves as a surrogate for atherosclerosis-associated vascular diseases, and coronary artery calcification is mediated by multiple pathogenic factors. Estrogen is a known factor that protects the arterial wall against atherosclerosis, but its role in the coronary artery calcification development remains largely unclear. This study tested the hypothesis that estrogen inhibits coronary artery calcification via the hypoxia-induced factor-1α pathway. Methods Eight-week-old healthy female Sprague–Dawley rats were castrated, and vitamin D3 was administered orally to establish. Hypoxia-induced factor-1 inhibitor was administered to test its effect on vascular calcification and expression of bone morphogenetic protein 2 and runt-related transcription factor-2. Vascular smooth muscle cell calcification was induced with CaCl2 in rat aortic smooth muscle cells in the presence or absence of E2(17β-estradiol) and bone morphogenetic protein 2 siRNA intervention. Results The estrogen levels in ovariectomized rats were significantly decreased, as determined by ELISA. Expression of hypoxia-induced factor-1α mRNA and protein was significantly increased in vascular cells with calcification as compared to those without calcification (p 
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Estrogen is a known factor that protects the arterial wall against atherosclerosis, but its role in the coronary artery calcification development remains largely unclear. This study tested the hypothesis that estrogen inhibits coronary artery calcification via the hypoxia-induced factor-1α pathway. Methods Eight-week-old healthy female Sprague–Dawley rats were castrated, and vitamin D3 was administered orally to establish. Hypoxia-induced factor-1 inhibitor was administered to test its effect on vascular calcification and expression of bone morphogenetic protein 2 and runt-related transcription factor-2. Vascular smooth muscle cell calcification was induced with CaCl2 in rat aortic smooth muscle cells in the presence or absence of E2(17β-estradiol) and bone morphogenetic protein 2 siRNA intervention. Results The estrogen levels in ovariectomized rats were significantly decreased, as determined by ELISA. Expression of hypoxia-induced factor-1α mRNA and protein was significantly increased in vascular cells with calcification as compared to those without calcification (p &lt; 0.01). E2 treatment decreased the calcium concentration in vascular cell calcification and cell calcium nodules in vitro (p &lt; 0.05). E2 also lowered the levels of hypoxia-induced factor-1α mRNA and protein (p &lt; 0.01). Oral administration of the hypoxia-induced factor-1α inhibitor dimethyloxetane in castrated rats alleviated vascular calcification and expression of osteogenesis-related transcription factors, bone morphogenetic protein 2 and RUNX2 (p &lt; 0.01). Finally, bone morphogenetic protein 2 siRNA treatment decreased the levels of p-Smad1/5/8 in A7r5 calcification cells (p &lt; 0.01). Conclusion Estrogen deficiency enhances vascular calcification. Treatment with estrogen reduces the expression of hypoxia-induced factor-1α as well as vascular calcification in rats. The estrogen effects occur in a fashion dependent on hypoxia-induced factor-1α regulation of bone morphogenetic protein-2 and downstream Smad1/5/8.</description><identifier>ISSN: 1708-5381</identifier><identifier>EISSN: 1708-539X</identifier><identifier>DOI: 10.1177/1708538120904297</identifier><identifier>PMID: 32089109</identifier><language>eng</language><publisher>London, England: SAGE Publications</publisher><subject>Original</subject><ispartof>Vascular, 2020-08, Vol.28 (4), p.465-474</ispartof><rights>The Author(s) 2020</rights><rights>The Author(s) 2020 2020 SAGE Publications</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c401t-91f956201ec5c5c9305ac24c35ca3601f0657f8ba07203eb59489cc249b609073</citedby><cites>FETCH-LOGICAL-c401t-91f956201ec5c5c9305ac24c35ca3601f0657f8ba07203eb59489cc249b609073</cites><orcidid>0000-0001-7358-8683</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885,27924,27925,79364</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/32089109$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Wu, Xinhua</creatorcontrib><creatorcontrib>Zhao, Qiuyan</creatorcontrib><creatorcontrib>Chen, Zhangrong</creatorcontrib><creatorcontrib>Geng, Yong-Jian</creatorcontrib><creatorcontrib>Zhang, Wanting</creatorcontrib><creatorcontrib>Zhou, Qingqing</creatorcontrib><creatorcontrib>Yang, Wei</creatorcontrib><creatorcontrib>Liu, Quanyi</creatorcontrib><creatorcontrib>Liu, Hong</creatorcontrib><title>Estrogen inhibits vascular calcification in rats via hypoxia-induced factor-1α signaling</title><title>Vascular</title><addtitle>Vascular</addtitle><description>Objective Calcification serves as a surrogate for atherosclerosis-associated vascular diseases, and coronary artery calcification is mediated by multiple pathogenic factors. Estrogen is a known factor that protects the arterial wall against atherosclerosis, but its role in the coronary artery calcification development remains largely unclear. This study tested the hypothesis that estrogen inhibits coronary artery calcification via the hypoxia-induced factor-1α pathway. Methods Eight-week-old healthy female Sprague–Dawley rats were castrated, and vitamin D3 was administered orally to establish. Hypoxia-induced factor-1 inhibitor was administered to test its effect on vascular calcification and expression of bone morphogenetic protein 2 and runt-related transcription factor-2. Vascular smooth muscle cell calcification was induced with CaCl2 in rat aortic smooth muscle cells in the presence or absence of E2(17β-estradiol) and bone morphogenetic protein 2 siRNA intervention. Results The estrogen levels in ovariectomized rats were significantly decreased, as determined by ELISA. Expression of hypoxia-induced factor-1α mRNA and protein was significantly increased in vascular cells with calcification as compared to those without calcification (p &lt; 0.01). E2 treatment decreased the calcium concentration in vascular cell calcification and cell calcium nodules in vitro (p &lt; 0.05). E2 also lowered the levels of hypoxia-induced factor-1α mRNA and protein (p &lt; 0.01). Oral administration of the hypoxia-induced factor-1α inhibitor dimethyloxetane in castrated rats alleviated vascular calcification and expression of osteogenesis-related transcription factors, bone morphogenetic protein 2 and RUNX2 (p &lt; 0.01). Finally, bone morphogenetic protein 2 siRNA treatment decreased the levels of p-Smad1/5/8 in A7r5 calcification cells (p &lt; 0.01). Conclusion Estrogen deficiency enhances vascular calcification. Treatment with estrogen reduces the expression of hypoxia-induced factor-1α as well as vascular calcification in rats. 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Estrogen is a known factor that protects the arterial wall against atherosclerosis, but its role in the coronary artery calcification development remains largely unclear. This study tested the hypothesis that estrogen inhibits coronary artery calcification via the hypoxia-induced factor-1α pathway. Methods Eight-week-old healthy female Sprague–Dawley rats were castrated, and vitamin D3 was administered orally to establish. Hypoxia-induced factor-1 inhibitor was administered to test its effect on vascular calcification and expression of bone morphogenetic protein 2 and runt-related transcription factor-2. Vascular smooth muscle cell calcification was induced with CaCl2 in rat aortic smooth muscle cells in the presence or absence of E2(17β-estradiol) and bone morphogenetic protein 2 siRNA intervention. Results The estrogen levels in ovariectomized rats were significantly decreased, as determined by ELISA. Expression of hypoxia-induced factor-1α mRNA and protein was significantly increased in vascular cells with calcification as compared to those without calcification (p &lt; 0.01). E2 treatment decreased the calcium concentration in vascular cell calcification and cell calcium nodules in vitro (p &lt; 0.05). E2 also lowered the levels of hypoxia-induced factor-1α mRNA and protein (p &lt; 0.01). Oral administration of the hypoxia-induced factor-1α inhibitor dimethyloxetane in castrated rats alleviated vascular calcification and expression of osteogenesis-related transcription factors, bone morphogenetic protein 2 and RUNX2 (p &lt; 0.01). Finally, bone morphogenetic protein 2 siRNA treatment decreased the levels of p-Smad1/5/8 in A7r5 calcification cells (p &lt; 0.01). Conclusion Estrogen deficiency enhances vascular calcification. Treatment with estrogen reduces the expression of hypoxia-induced factor-1α as well as vascular calcification in rats. The estrogen effects occur in a fashion dependent on hypoxia-induced factor-1α regulation of bone morphogenetic protein-2 and downstream Smad1/5/8.</abstract><cop>London, England</cop><pub>SAGE Publications</pub><pmid>32089109</pmid><doi>10.1177/1708538120904297</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0001-7358-8683</orcidid><oa>free_for_read</oa></addata></record>
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title Estrogen inhibits vascular calcification in rats via hypoxia-induced factor-1α signaling
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