کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10954215 | 1097851 | 2009 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Pleiotropic effects of neutrophils on myocyte apoptosis and left ventricular remodeling during early volume overload
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
بیولوژی سلول
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![عکس صفحه اول مقاله: Pleiotropic effects of neutrophils on myocyte apoptosis and left ventricular remodeling during early volume overload Pleiotropic effects of neutrophils on myocyte apoptosis and left ventricular remodeling during early volume overload](/preview/png/10954215.png)
چکیده انگلیسی
Most of the available evidence on the role of neutrophils on pathological cardiac remodeling has been pertained after acute myocardial infarction. However, whether neutrophils directly contribute to the pathogenesis of cardiac remodeling after events other than acute myocardial infarction remains unknown. Here we show that acute eccentric hypertrophy induced by aorto-caval fistula (ACF) in the rats induced an increase in the inflammatory response characterized by activation of the STAT pathway and increased infiltration of neutrophils in the myocardium. This early inflammation was associated with a decrease in interstitial collagen accumulation and an increase in myocyte apoptosis. Neutrophil infiltration blockade attenuated MMP activation, ECM degradation, and myocyte apoptosis induced by ACF at 24Â hours and attenuated the development of eccentric hypertrophy induced by ACF at 2 and 3Â weeks, suggesting a causal relationship between neutrophils and the ACF-induced cardiac remodeling. In contrast, sustained neutrophil depletion over 4Â weeks resulted in adverse cardiac remodeling with further increase in cardiac dilatation and macrophage infiltration, but with no change in myocyte apoptosis level. These data support a functional role for neutrophils in MMP activation, ECM degradation, and myocyte apoptosis during eccentric cardiac hypertrophy and underscore the adverse effects of chronic anti-neutrophil therapy on cardiac remodeling induced by early volume overload.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular and Cellular Cardiology - Volume 47, Issue 5, November 2009, Pages 634-645
Journal: Journal of Molecular and Cellular Cardiology - Volume 47, Issue 5, November 2009, Pages 634-645
نویسندگان
Mikhail A. Kolpakov, Rachid Seqqat, Khadija Rafiq, Hang Xi, Kennneth B. Margulies, Joseph R. Libonati, Pamela Powel, Steven R. Houser, Louis J. Dell'italia, Abdelkarim Sabri,