scholarly journals Subtype Specific Downregulation of Thyroid Hormone Receptor mRNA by .BETA.-Adrenoreceptor Blockade in the Myocardium.

2000 ◽  
Vol 23 (11) ◽  
pp. 1303-1306 ◽  
Author(s):  
Shiva SHAHRARA ◽  
Christer SYLVEN ◽  
Viktor DRVOTA
Keyword(s):  
Thyroid Hormone ◽  
Hormone Receptor ◽  
Thyroid Hormone Receptor ◽  
Receptor Mrna

scholarly journals Effects of hyper- and hypothyroid on expression of thyroid hormone receptor mRNA in rat myocardium

2007 ◽  
Vol 195 (3) ◽  
pp. 429-438 ◽  
Author(s):  
C R Liu ◽  
L Y Li ◽  
F Shi ◽  
X Y Zang ◽  
Y M Liu ◽  
...  
Keyword(s):  
Thyroid Hormone ◽  
Mrna Expression ◽  
Hormone Receptor ◽  
Thyroid Hormone Receptor ◽  
Developmental Process ◽  
Control Group ◽  
Rat Myocardium ◽  
Receptor Mrna ◽  
Close Relationship ◽  
Heart Lesions

Thyroid dysfunction is classified into hyperthyroidism and congenital hypothyroidism (CH). Both hyperthyroidism and CH can cause heart lesions; however, the mechanisms involved remain unclear. The left ventricle was collected from eu-, hyper-, and hypothyroid rat. RNA was extracted and reverse-transcripted to cDNA. Real-time fluorescence quantitation-PCR was used to quantify the differential expression of thyroid hormone receptor (TR) subtype mRNA among eu-, hyper-, and hypothyroid rat myocardium. Here, we show that compared with the normal myocardium, TRα1 mRNA expression was upregulated by 51% (P<0.01), TRα2 mRNA expression was downregulated by 58% (P<0.01), and TRβ1 mRNA expression remained unchanged in hyperthyroid rat myocardium (P>0.05). TRα1, TRα2, and TRβ1 were expressed in normal and hypothyroid rat myocardium throughout the developmental process. In hypothyroid rats, myocardial TRα1 mRNA expression was generally downregulated and the expression peak appeared late. Myocardial TRα2 mRNA expression was generally upregulated and the expression peak appeared late. Myocardial TRβ1 mRNA expression was generally downregulated and changed similarly with the control group. In addition, the hypogenetic myocardium can be seen in the hypothyroid rat by pathology study. Taken together, the abnormal expression of TR subtype mRNA may have a close relationship with the pathogenesis of CH and hyperthyroidism heart disease.

scholarly journals A purine-rich intronic element enhances alternative splicing of thyroid hormone receptor mRNA

RNA ◽  
2001 ◽  
Vol 7 (6) ◽  
pp. 859-874 ◽  
Author(s):  
MICHELLE L. HASTINGS ◽  
CATHERINE M. WILSON ◽  
STEPHEN H. MUNROE
Keyword(s):  
Alternative Splicing ◽  
Thyroid Hormone ◽  
Hormone Receptor ◽  
Thyroid Hormone Receptor ◽  
Receptor Mrna
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