{"title":"在小鼠模型中，PM2.5 通过 Ang II/ERK1/2/TGF-β1 信号通路诱导心肌纤维化。","authors":"Xiwen Zang, Jun Zhao, Chengzhi Lu","doi":"10.1177/14703203211003786","DOIUrl":null,"url":null,"abstract":"<p><strong>Objects: </strong>To discuss the influence of PM2.5 on myocardial fibrosis and related mechanism.</p><p><strong>Methods: </strong>PM2.5 particles were prepared into different concentrations of solution to drip into the mice's trachea twice each week. The mice were divided into five groups, Blank control group (C group), NS control group (J group), high dose group (G group, 10 mg/kg), medium dose group (Z group, 5 mg/kg), and 1ow dose group (D group, 2.5 mg/kg). After 6 weeks, the myocardial fibrosis was observed by HE and Masson staining. The expression of Ang II, ERK1/2, and TGF-β<sub>1</sub> was examined by Western Blotting (WB) and Real time PCR (RT-PCR).</p><p><strong>Results: </strong>The higher dose PM2.5 was administrated, the worse the myocardial fibrosis was in PM2.5 groups. The expression of Ang II, ERK1/2, and TGF-β<sub>1</sub> was increased in higher dose groups in protein and mRNA level.</p><p><strong>Conclusion: </strong>1. PM2.5 induced the cardiac fibrosis. 2. PM2.5 dripped into trachea in mice model activated the expression of Ang II, ERK1/2, and TGF-β<sub>1</sub>. The activation of renin-angiotensin system (RAS) was suggested to participate in the cardiac fibrosis induced by PM2.5.</p>","PeriodicalId":17330,"journal":{"name":"Journal of the Renin-Angiotensin-Aldosterone System","volume":null,"pages":null},"PeriodicalIF":2.1000,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/0d/f3/10.1177_14703203211003786.PMC7983242.pdf","citationCount":"0","resultStr":"{\"title\":\"PM2.5 inducing myocardial fibrosis mediated by Ang II/ERK1/2/TGF-β<sub>1</sub> signaling pathway in mice model.\",\"authors\":\"Xiwen Zang, Jun Zhao, Chengzhi Lu\",\"doi\":\"10.1177/14703203211003786\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Objects: </strong>To discuss the influence of PM2.5 on myocardial fibrosis and related mechanism.</p><p><strong>Methods: </strong>PM2.5 particles were prepared into different concentrations of solution to drip into the mice's trachea twice each week. The mice were divided into five groups, Blank control group (C group), NS control group (J group), high dose group (G group, 10 mg/kg), medium dose group (Z group, 5 mg/kg), and 1ow dose group (D group, 2.5 mg/kg). After 6 weeks, the myocardial fibrosis was observed by HE and Masson staining. The expression of Ang II, ERK1/2, and TGF-β<sub>1</sub> was examined by Western Blotting (WB) and Real time PCR (RT-PCR).</p><p><strong>Results: </strong>The higher dose PM2.5 was administrated, the worse the myocardial fibrosis was in PM2.5 groups. The expression of Ang II, ERK1/2, and TGF-β<sub>1</sub> was increased in higher dose groups in protein and mRNA level.</p><p><strong>Conclusion: </strong>1. PM2.5 induced the cardiac fibrosis. 2. PM2.5 dripped into trachea in mice model activated the expression of Ang II, ERK1/2, and TGF-β<sub>1</sub>. The activation of renin-angiotensin system (RAS) was suggested to participate in the cardiac fibrosis induced by PM2.5.</p>\",\"PeriodicalId\":17330,\"journal\":{\"name\":\"Journal of the Renin-Angiotensin-Aldosterone System\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.1000,\"publicationDate\":\"2021-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/0d/f3/10.1177_14703203211003786.PMC7983242.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of the Renin-Angiotensin-Aldosterone System\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.1177/14703203211003786\",\"RegionNum\":4,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"PERIPHERAL VASCULAR DISEASE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the Renin-Angiotensin-Aldosterone System","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1177/14703203211003786","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PERIPHERAL VASCULAR DISEASE","Score":null,"Total":0}
PM2.5 inducing myocardial fibrosis mediated by Ang II/ERK1/2/TGF-β1 signaling pathway in mice model.
Objects: To discuss the influence of PM2.5 on myocardial fibrosis and related mechanism.
Methods: PM2.5 particles were prepared into different concentrations of solution to drip into the mice's trachea twice each week. The mice were divided into five groups, Blank control group (C group), NS control group (J group), high dose group (G group, 10 mg/kg), medium dose group (Z group, 5 mg/kg), and 1ow dose group (D group, 2.5 mg/kg). After 6 weeks, the myocardial fibrosis was observed by HE and Masson staining. The expression of Ang II, ERK1/2, and TGF-β1 was examined by Western Blotting (WB) and Real time PCR (RT-PCR).
Results: The higher dose PM2.5 was administrated, the worse the myocardial fibrosis was in PM2.5 groups. The expression of Ang II, ERK1/2, and TGF-β1 was increased in higher dose groups in protein and mRNA level.
Conclusion: 1. PM2.5 induced the cardiac fibrosis. 2. PM2.5 dripped into trachea in mice model activated the expression of Ang II, ERK1/2, and TGF-β1. The activation of renin-angiotensin system (RAS) was suggested to participate in the cardiac fibrosis induced by PM2.5.
期刊介绍：
JRAAS is a peer-reviewed, open access journal, serving as a resource for biomedical professionals, primarily with an active interest in the renin-angiotensin-aldosterone system in humans and other mammals. It publishes original research and reviews on the normal and abnormal function of this system and its pharmacology and therapeutics, mostly in a cardiovascular context but including research in all areas where this system is present, including the brain, lungs and gastro-intestinal tract.
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