2015
DOI: 10.5935/1678-9741.20150004
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Analysis of immunostaining and western blotting of endothelin 1 and its receptors in mitral stenosis

Abstract: IntroductionRheumatic Fever represents a serious public health problem in developing countries, with thousands of new cases each year. It is an autoimmune disease, which occurs in response to infection by streptococcus A.ObjectiveThe aim of this study was to evaluate the immunolabeling and protein expression for endothelin-1 and 3 (ET-1, ET-3) and its receptors (ETA, ETB) in rheumatic mitral valves.MethodsImmunohistochemistry was used to identify ET-1/ET-3 and ETA/ETB receptors in rheumatic and control mitral … Show more

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“…MMVD involves glycosaminoglycan and proteoglycan accumulation resulting in leaflet weakening and valve prolapse, whereas MS is associated with fibrotic remodelling, collagen accumulation and leaflet stiffening [9,10]. Angiogenic remodelling is a hallmark of both CAVD and MS, but it is not observed during MMVD [10][11][12][13][14]. During CAVD and MS, both valves also & 2016 The Author(s) Published by the Royal Society.…”
Section: Introductionmentioning
confidence: 99%
“…MMVD involves glycosaminoglycan and proteoglycan accumulation resulting in leaflet weakening and valve prolapse, whereas MS is associated with fibrotic remodelling, collagen accumulation and leaflet stiffening [9,10]. Angiogenic remodelling is a hallmark of both CAVD and MS, but it is not observed during MMVD [10][11][12][13][14]. During CAVD and MS, both valves also & 2016 The Author(s) Published by the Royal Society.…”
Section: Introductionmentioning
confidence: 99%
“…No entanto, em concentrações mais elevadas, atua como mediador patogênico causando vasoconstrição, fibrose, inflamação e hipertrofia vascular, dessa forma as dosagens aumentadas de ET1 nos estudos feitos em valvas mitrais reumáticas justificam esse achado. 4,5 Segundo Krapf et al A fusão comissural é o principal mecanismo de EM reumática. As lesões associadas são o encurtamento das cordas e fusão e espessamento dos folhetos.…”
Section: Fisiopatologiaunclassified