کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5830182 1559013 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Acute myocardial ischemia directly modulates the expression of brain natriuretic peptide at the transcriptional and translational levels via inflammatory cytokines
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب سلولی و مولکولی
پیش نمایش صفحه اول مقاله
Acute myocardial ischemia directly modulates the expression of brain natriuretic peptide at the transcriptional and translational levels via inflammatory cytokines
چکیده انگلیسی
Cardiomyocyte stretching has been reported to be a major trigger for brain natriuretic peptide (BNP) release; however, an increase in circulating BNP is observed in patients with acute myocardial ischemia in the absence of increased left ventricular wall stress or cardiomyocyte stretching. In the present study, to investigate the direct and independent effects of acute myocardial ischemia on BNP expression and its mechanism, we established an in vitro glucose-free ischemia and hypoxia injured model of cultured rat cardiomyotes and proved hypoxia upregulated expressions of interleukin-6(il-6) and BNP. Further treatment with il-6 elicited dose- and time-dependent increases in BNP mRNA and protein expression as well as an upregulation in transforming growth factor-β1 (TGF-β1)/Smad2 expression, which was partially suppressed by a neutralizing antibody. In conclusion, our study showed that acute myocardial ischemia can directly upregulate BNP expression at the translational and transcriptional levels through the action of il-6, and this process is associated with the upregulation of TGF-β1/Smad2 signal path.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Pharmacology - Volume 670, Issue 1, 16 November 2011, Pages 7-12
نویسندگان
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