Linked Life Data

11303782

Source:http://linkedlifedata.com/resource/pubmed/id/11303782

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pubmed-article:11303782pubmed:abstractTextMechanisms underlying the acute effects of amphetamine (AMP) were examined by monitoring the expression of metabotropic glutamate receptor 5 (mGluR5) and specific 3H-glutamate binding in the developing rat brain. Each of the postnatal day (P) 4, P21 and P60 rats received one intraperitoneal injection of AMP, 5 mg/kg or saline and were sacrificed one hour later. In situ hybridization analysis revealed that the AMP treatment raised the levels of the mGluR5 mRNA by 9-28% in the neurons of the layer 5 of motor and somatosensory cortices, whereas reduced the levels by 12-28% in the layer 5 of perirhinal cortex and the ventromedial part of caudate-putamen of the 3 ages. In the layer 2/3 neurons of cingular cortex, an 18% higher and 14% and 22% lower than control levels of the mRNA were detected in the P4 and in the P21 and P60 rats injected with AMP. Moreover, the levels of mGluR5 mRNA in the hippocampi and dentate gyri were elevated by AMP to 110-151% of controls in the rats of 3 ages. Reversible 3H-glutamate binding assay showed an increase of 25% and a 12% decrease in the binding levels in the cortices of AMP-treated P4 and P21 rats. The AMP administration also produced a 27% reduction and 62% elevation in the binding of the hippocampi of P4 and P60 rats. The results reveal age- and region-dependent changes in the expression of the glutamate receptors induced by AMP and may indicate differential plastic capability of the neurons to the drug perturbation.lld:pubmed
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pubmed-article:11303782pubmed:dateRevised2006-11-15lld:pubmed
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pubmed-article:11303782pubmed:articleTitleEffect of amphetamine on the expression of the metabotropic glutamate receptor 5 mRNA in developing rat brain.lld:pubmed
pubmed-article:11303782pubmed:affiliationDepartment of Anatomy, College of Medicine, National Taiwan University, Taipei, Republic of China.lld:pubmed
pubmed-article:11303782pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:11303782pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed