کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2899177 1173120 2007 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Bone marrow-derived progenitor cells contribute to lung remodelling after myocardial infarction
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی کاردیولوژی و پزشکی قلب و عروق
پیش نمایش صفحه اول مقاله
Bone marrow-derived progenitor cells contribute to lung remodelling after myocardial infarction
چکیده انگلیسی

BackgroundCongestive heart failure (CHF) causes structural modifications of the lungs that contribute to the functional limitations of affected subjects. We hypothesized that bone marrow-derived progenitor cells could contribute to lung structural remodelling after myocardial infarction (MI).MethodsWistar rats were irradiated and received a bone marrow transplant (BMT) from green fluorescent protein (GFP) transgenic rats, followed 5 weeks later by coronary artery ligation or sham operation. Five weeks after MI, lung immunofluorescence studies were performed and GFP expression evaluated by Western immunoblotting.ResultsAfter MI, rats developed lung structural remodelling characterized by myofibroblast (MF) proliferation in the alveolar septa. After BMT, some GFP+ cells were found in the lungs of sham animals. The amount of GFP+ cells in the lungs of MI rats was greatly increased with evidence of differentiation into MFs, as evaluated by co-localization correlation analysis with smooth muscle alpha-actin (P<.01). These cells were particularly abundant in the perivenular regions where they incorporated into the wall of blood vessels. There was a threefold increase in lung GFP protein expression after MI (P=.01).ConclusionsAfter MI, bone marrow-derived progenitor differentiates into lung MFs. This novel pathophysiologic process may contribute to the pulmonary manifestations of CHF and could have significant therapeutic implications.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cardiovascular Pathology - Volume 16, Issue 6, November–December 2007, Pages 321–328
نویسندگان
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