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Sodium butyrate selectively alters thyroid hormone receptor gene expression in GH3 cells 总被引:4,自引:0,他引:4
M A Lazar 《The Journal of biological chemistry》1990,265(29):17474-17477
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Carmelo Nucera Patrizia Muzzi Cecilia Tiveron Antonella Farsetti Federico La Regina Benedetta Foglio Shou‐Ching Shih Fabiola Moretti Linda Della Pietra Francesca Mancini Ada Sacchi Francesco Trimarchi Alessandro Vercelli Alfredo Pontecorvi 《Journal of cellular and molecular medicine》2010,14(10):2417-2435
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Region-specific effects of hypothyroidism on the relative expression of thyroid hormone receptors in adult rat brain 总被引:6,自引:0,他引:6
The aim of this study was to determine whether changes in the circulating thyroid hormone (TH) and brain synaptosomal TH content
affected the relative levels of mRNA encoding different thyroid hormone receptor (TR) isoforms in adult rat brain. Northern
analysis of polyA+RNA from cerebral cortex, hippocampus and cerebellum of control and hypothyroid adult rats was performed in order to determine
the relative expression of all TR isoforms. Circulating and synaptosomal TH concentrations were determined by radioimmunoassay.
Region-specific quantitative differences in the expression pattern of all TR isoforms in euthyroid animals and hypothyroid
animals were recorded. In hypothyroidism, the levels of TRα2 mRNA (non-T3-binding isoform) were decreased in all brain regions examined. In contrast the relative expression of TRα1 was increased
in cerebral cortex and hippocampus, whereas in cerebellum remained unaffected. The TRβ1 relative expression in cerebral cortex
and hippocampus of hypothyroid animals was not affected, whereas this TR isoform was not detectable in cerebellum. The TR
isoform mRNA levels returned to control values following T4 intraperitoneal administration to the hypothyroid rats. The obtained results show that in vivo depletion of TH regulates TR gene expression in adult rat brain in a region-specific manner. (Mol Cell Biochem 278: 93–100, 2005) 相似文献