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Chronic colitis upregulates microRNAs suppressing brain-derived neurotrophic factor in the adult heart

PLoS ONE. 2021-09; 
Yanbo Tang, Kevin T Kline, Xiaoying S Zhong, Ying Xiao, Haifeng Lian, Jun Peng, Xiaowei Liu, Don W Powell, Guodu Tang, Qingjie Li
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摘要

Ulcerative colitis and Crohn's disease are classified as chronic inflammatory bowel diseases (IBD) with known extraintestinal manifestations. The interplay between heart and gut in IBD has previously been noted, but the mechanisms remain elusive. Our objective was to identify microRNAs mediating molecular remodeling and resulting cardiac impairment in a rat model of colitis. To induce chronic colitis, dextran sodium sulfate (DSS) was given to adult rats for 5 days followed by 9 days with normal drinking water for 4 cycles over 8 weeks. Echocardiography was performed to evaluate heart function. DSS-induced colitis led to a significant decrease in ejection fraction, increased left ventricular mass and size, and e... More

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