Cardiac nuclear hormone receptor mRNA in heart failure in man

详细信息    查看全文

• 作者：Sylvé ; n ; Christer ; Jansson ; Eva ; Sotonyi ; Peter ; Waagstein ; Finn ; Barkhem ; Tomas ; Brö ; nnegå ; rd ; Mikael
• 关键词：dilated cardiomyopathy ; myocardium ; messenger RNA ; receptor ; thyroid hormone ; glucocorticoid hormone
• 刊名：Life Sciences
• 出版年：1996
• 出版时间：October 25, 1996
• 年：1996
• 卷：59
• 期：22
• 页码：1917-1922
• 全文大小：349 K

文摘

Eight donor hearts and six explanted hearts due to dilated cardiomyopathy, normal skeletal muscle and liver were analysed. Glucocorticoid receptor (GR) and thyroid hormone receptor (T3R) isoforms β1, β2, α1 and α2 mRNA abundance were determined by solution hybridization. Both GR and T3R receptor mRNA isoforms were lower in the myocardium as compared to skeletal muscle and in particular to liver. GR mRNA abundance was higher than that of any T3R isoform while the sum of ligand-binding isoforms (β1, β2 and α1) were similar in the myocardium and in skeletal muscle as opposed to the liver where GR mRNA was higher. GR mRNA abundance was similar in right and left ventricles from donor hearts and in cardiomyopathy. T3R β1 showed higher levels in the right ventricle with higher levels in cardiomyopathy as compared to donor heart. T3R isoform α1 and especially the α1/α2 ratio were lower in left ventricle in cardiomyopathy compared to donor hearts. In conclusion, GR and T3R isoforms mRNA abundance are low in the human myocardium. In the failing myocardium GR and T3R β2 and α2 show no signs of reactivity while T3R β1 and α1 mRNA adapt.