کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9425695 | 1614909 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dissociation of the effect of spatial behaviors on the phosphorylation of cAMP-response element binding protein (CREB) within the nucleus accumbens
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کلمات کلیدی
cyclic AMP-response element binding proteinCREBPBSp-CREBSDSPKCGAPDHNAccN-methyl-d-aspartateNMDAcAMP - cAMPVentral striatum - Striatum درشتCyclic adenosine monophosphate - آدنوزین مونوفسفات CyclicSpatial novelty - تازگی فضاییanalysis of variance - تحلیل واریانسANOVA - تحلیل واریانس Analysis of variancelong-term potentiation - تقویت درازمدتLTP - تقویت طولانی مدت یا LTP exploration - جهانگردی یا اکتشافDopamine - دوپامینRam - رمsodium dodecyl sulfate - سدیم دودسیل سولفاتTranscription factor - عامل رونویسیPhosphate-buffered saline - محلول نمک فسفات با خاصیت بافریNucleus accumbens - هسته accumbensProtein kinase C - پروتئین کیناز سیRadial arm maze - پیچ و خم بازوی شعاعیoptical density - چگالی نوریglyceraldehyde-3-phosphate dehydrogenase - گلیسرالیدید-3-فسفات دهیدروژنازSpatial learning - یادگیری فضایی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Several studies have reported a role for the nucleus accumbens (NAcc) in learning and synaptic plasticity. Many of them suggest that the NAcc is involved in translating cortico-limbic information to the motor system mediating spatial learning and memory processes. Previous studies from our laboratory have shown that protein kinase C is activated following training in a food search spatial learning task. The present study further characterizes the molecular substrates associated with NAcc-dependent spatial behavior. The cyclic AMP-response element binding protein (CREB), a transcription factor implicated in the formation of long-term memory, was studied in the NAcc following spatial training in a food search spatial learning task. Western blots were performed to detect phosphorylated (activated) and total CREB protein levels. Our results show that CREB is significantly phosphorylated in the NAcc 48 h after habituation and at 5 min and 1 h after the first spatial training session in comparison with the naive animals that remained in their home cages. Since published data show that NAcc plays a role in novelty detection and reactivity, we conducted further experiments in order to dissociate the effect on CREB phosphorylation and expression of spatial novelty (single exposure), exploration, and spatial learning in the food search apparatus. Results show that CREB phosphorylation is significantly increased 48 h after exposure to a novel environment. The present study suggests that CREB phosphorylation observed in the NAcc during habituation and spatial training may be mainly triggered by detection of spatial novelty.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience - Volume 130, Issue 4, 2005, Pages 833-842
Journal: Neuroscience - Volume 130, Issue 4, 2005, Pages 833-842
نویسندگان
L. Alvarez-Jaimes, M. Centeno-González, M. Feliciano-Rivera, C.S. Maldonado-Vlaar,