[Effects of peroxisome proliferator-activated receptors γ on the expression of insulin receptor substrate-4 gene in rat cortical neurons and mouse brain].
Nan Fang Yi Ke Da Xue Xue Bao
; 33(10): 1463-6, 2013 Oct.
Article
em Zh
| MEDLINE
| ID: mdl-24144747
ABSTRACT
OBJECTIVE:
To investigate the effect of peroxisome proliferator-activated receptors γ (PPARγ) on insulin receptor substrate-4 (IRS-4) gene expression in the brain.METHODS:
Primarily cultured cortical neurons from E17-18 Sprague Dawley rats, after 1 week of plating, were exposed to 10 µmol/L PPARγ agonist rosiglitazone for 0, 1, 4 or 24 h. Adult C57BL/6J mice or conditional brain PPARγ knock-out mice (B-PPARγ-KO, BKO) received an intraperitoneal injection of rosiglitazone in 10% DMSO at 12 mg/kg or injection of the same volume of saline containing 10% DMSO. The effect of rosiglitazone on the survival of the neurons was examined by MTT assay. The expression of IRS-4 mRNA was analyzed by real-time quantitative PCR.RESULTS:
The survival of the cortical neurons showed no significant difference between the agonist groups and the control group. The expression of IRS-4 mRNA was significantly up-regulated in the cortical tissues and neurons of the agonist groups compared with the control groups (P<0.05), but in BKO mice without treatment, IRS-4 mRNA expression was significantly down-regulated (P<0.05).CONCLUSION:
PPARγ can enhance the expression of IRS-4 mRNA in the brain.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Córtex Cerebral
/
Tiazolidinedionas
/
PPAR gama
/
Proteínas Substratos do Receptor de Insulina
Limite:
Animals
/
Pregnancy
Idioma:
Zh
Ano de publicação:
2013
Tipo de documento:
Article