کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9415675 | 1614322 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Differential regulation of ionotropic glutamate receptor subunits following cocaine self-administration
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کلمات کلیدی
PFCnigrostriatalVTAmesocorticolimbicN-methyl-d-aspartateNMDAAMPANACCPUcaudate–putamen - Caudate-PutameniGluR - IgluReinforcement - تقویتsubstantia nigra - توده سیاهself-administration - خود ادارهprefrontal cortex - قشر prefrontalNeural Basis of Behavior - مبانی عصبی رفتاریDrugs of abuse: cocaine - مواد مخدر: کوکائینventral tegmental area - ناحیه تگمنتوم شکمیNucleus accumbens - هسته accumbensCocaine - کوکائین glutamate - گلوتامات
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Previous examination of binge cocaine self-administration and 2 week withdrawal from cocaine self-administration on ionotropic glutamate receptor subunit (iGluRs) protein levels revealed significant alterations in iGluR protein levels that differed between the mesocorticolimbic and nigrostriatal pathways. The present study was undertaken to extend the examination of cocaine-induced alterations in iGluR protein expression by assessing the effects of acute withdrawal (15-16 h) from limited access cocaine self-administration (8 h/day, 15 days). Western blotting was used to compare levels of iGluR protein expression (NR1-3B, GluR1-7, KA2) in the mesolimbic (ventral tegmental area, VTA; nucleus accumbens, NAc; and prefrontal cortex, PFC) and nigrostriatal pathways (substantia nigra, SN and dorsal caudate-putamen, CPu). Within the mesolimbic pathway, reductions were observed in NR1 and GluR5 immunoreactivity in the VTA although no significant alterations were observed in any iGluR subunits in the NAc. In the PFC, NR1 was significantly upregulated while GluR2/3, GluR4, GluR5, GluR6/7, and KA2 were decreased. Within the nigrostriatal pathway, NR1, NR2A, NR2B, GluR1, GluR6/7 and KA2 were increased in the dorsal CPu, whereas no significant changes were observed in the SN. The results demonstrate region- and pathway-specific alterations in iGluR subunit expression following limited cocaine self-administration and suggest the importance for the activation of pathways that are substrates of the reinforcing and motoric effects of cocaine.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Brain Research - Volume 1064, Issues 1â2, 7 December 2005, Pages 75-82
Journal: Brain Research - Volume 1064, Issues 1â2, 7 December 2005, Pages 75-82
نویسندگان
Scott E. Hemby, Brian Horman, Wenxue Tang,