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- W3044091409 endingPage "111044" @default.
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- W3044091409 abstract "Exposure to ambient fine particulate matter (PM2.5) is associated with various adverse health outcomes. Although several mechanisms have been proposed including oxidative stress and inflammatory responses, the exact mechanism is still unknown. Few studies have investigated the mechanism linking PM2.5 and blood pressure (BP). In this study, we measured urinary metabolites and BP -related renin-angiotensin-aldosterone system (RAAS) to investigate the associations between ambient PM2.5 exposure and BP in healthy C57BL/6 mice. The C57BL/6 mice were exposed to ambient concentrated PM2.5 or filtered air (FA) for 16 weeks. Systolic BP and diastolic BP were measured by noninvasive BP system. The urine metabolites were quantified using the untargeted metabolomics approach. The expression of RAAS-related proteins angiotensin-converting enzyme (ACE)2, angiotensin (Ang) II, Ang (1–7) and aldosterone (ALD) were measured using Western blot and ELISA kits. The metabolomics analysis demonstrated that PM2.5 exposure induced significant changes of some metabolites in urine, including stress hormones, amino acids, fatty acids, and lipids. Furthermore, there was an elevation of BP, increase of serous Ang II and ALD, along with the decrease of ACE2 and Ang (1–7) in kidney in the PM2.5-exposed mice compared with FA-exposed mice. The results demonstrated that PM2.5 exposure-induced BP elevation might be associated with RAAS activation. Meanwhile, PM2.5 exposure-induced changes of stress hormone and lipid metabolism might mediate the activation of RAAS. The results suggested that the systemic stress hormone and lipid metabolism was associated with the development of hypertension." @default.
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- W3044091409 date "2020-10-01" @default.
- W3044091409 modified "2023-09-28" @default.
- W3044091409 title "Ambient fine particulate matter induced the elevation of blood pressure through ACE2/Ang(1–7) pathway: The evidence from urine metabolites" @default.
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- W3044091409 doi "https://doi.org/10.1016/j.ecoenv.2020.111044" @default.
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