Modulation of thyroid hormone receptors, TR alpha and TR beta, by using different doses of triiodothyronine (T3) at different times
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
03/12/2014
03/12/2014
01/07/2013
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Resumo |
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Processo FAPESP: 10/16911-4 Objective: To examine the effect of different doses of triiodothyronine (T3) on mRNA levels of thyroid hormone receptors, TR alpha and TR beta, at different times. Materials and methods: 3T3-L1 adipocytes were incubated with T3 (physiological dose: F; supraphysiological doses: SI or SII), or without T3 (control, C) for 0.5, 1, 6, or 24h. TR alpha and TR beta mRNA was detected using real-time polymerase chain reaction. Results: F increased TR beta mRNA levels at 0.5h. After 1h, TR alpha levels increased with F and SI and TR beta levels decreased with SII compared with C, F, and SI. After 6h, both genes were suppressed at all concentrations. In 24h, TR alpha and TR beta levels were similar to those of C group. Conclusions: T3 action with F began at 1h for TR alpha and at 0.5h for TR beta. These results suggest the importance of knowing the times and doses that activate T3 receptors in adipocytes. |
Formato |
368-374 |
Identificador |
http://dx.doi.org/10.1590/S0004-27302013000500006 Arquivos Brasileiros de Endocrinologia e Metabologia. Rio de Janeiro, Rj: Sbem-soc Brasil Endocrinologia & Metabologia, v. 57, n. 5, p. 368-374, 2013. 0004-2730 1677-9487 http://hdl.handle.net/11449/132408 10.1590/S0004-27302013000500006 S0004-27302013000500006 WOS:000322398100006 2-s2.0-84880955870 S0004-27302013000500006.pdf |
Idioma(s) |
eng |
Publicador |
Sbem-soc Brasil Endocrinologia & Metabologia |
Relação |
Arquivos Brasileiros de Endocrinologia & Metabologia |
Direitos |
openAccess |
Palavras-Chave | #TR alpha #TR beta #triiodothyronine #adipocytes |
Tipo |
info:eu-repo/semantics/article |