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- W4313386243 abstract "Abstract Pulmonary Hypertension is characterized by pulmonary arterial remodeling and increased pressure in the pulmonary circulation. It is often associated with inflammation in the lungs and can lead to right heart failure. Our work shows that urban ambient pollution exacerbates the experimental pulmonary hypertension phenotype just like other types of inflammatory lung conditions. We aimed to identify microRNAs (miRNAs) that are differentially expressed in our mouse model. In addition, we examined plasma samples from individuals occupationally exposed to high levels of air pollution or cigarette smoke, and from controls. Our study is the first to show significantly de-regulated expression of three microRNA species (miR-135a, miR-21, miR-204) in the lungs of mice that were exposed to antigen and particulate matter and developed pulmonary hypertension. De-regulated levels of miR-21 and miR-204 have been reported in human pulmonary hypertension and in experimental pulmonary hypertension. MiR-135a is targeting STAT6 and upregulated expression has been reported in experimental asthma. Using human samples, our study showed that plasma levels of miR-21 and miR-135a, but not levels of miR-204, clustered individuals with high dose exposures and individuals with low dose environmental exposures. Current studies are aimed at identifying the cytokines that control these miRNAs’ expression. The long range goal is to identify miRNAs that indicate an at-risk state of the pulmonary vasculature." @default.
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- W4313386243 date "2014-05-01" @default.
- W4313386243 modified "2023-10-01" @default.
- W4313386243 title "Regulation of microRNA expression in the lungs by exposure to air pollution & antigen (HUM2P.340)" @default.
- W4313386243 doi "https://doi.org/10.4049/jimmunol.192.supp.53.13" @default.
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