کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6277229 | 1295749 | 2010 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Common properties between synaptic plasticity in the main olfactory bulb and olfactory learning in young rats
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کلمات کلیدی
NMDA6-cyano-2,3-dihydroxy-7-nitro-quinoxalineGRLN-methyl-d-asparatateAP5CREBaCSFPNDMOBD-(−)-2-amino-5-phosphonopentanoic acid - D - (-) - 2-amino-5-phosphonopentanoic acidfEPSPs - fEPSP هاMAPK - MAPKBeta-adrenoceptors - بتا آدرنرژیکPreference - ترجیحlong-term potentiation - تقویت درازمدتLTP - تقویت طولانی مدت یا LTP postnatal day - روز پس از زایمانCNQX - سیانکیوایکسAversion - غرق شدنlateral olfactory tract - قطعه بویایی جانبیmain olfactory bulb - لامپ عصبانی اصلیgranule cell layer - لایه سلول گرانولLot - لوطlocus coeruleus - لوکوس سیرولئوسartificial cerebrospinal fluid - مایع مغزی نخاعی مصنوعیnoradrenaline - نورآدرنالین field excitatory postsynaptic potentials - پتانسیل پستنیپتیک تحریک پذیری میدانmitogen-activated protein kinase - پروتئین کیناز فعال با mitogenL-type calcium channel - کانال کلسیم L نوع
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Aversive olfactory learning was established in young rats after odor exposure paired with foot shock through a classical conditioning paradigm. Using behavioral pharmacology and Western blotting, we previously reported that plasticity in the main olfactory bulb (MOB) underlies aversive olfactory learning. Since long-term potentiation (LTP) observed in the hippocampus is believed to be a cellular substrate for aspects of memory, we attempted to induce LTP in the MOB. Using brain slices containing the MOB, we found that five tetani of the lateral olfactory tract evoked LTP that was blocked by the N-methyl-d-aspartate (NMDA) receptor antagonist AP5. Although three tetani induced no significant changes in control slices, with noradrenaline (NA) application they produced clear LTP (NA-mediated LTP), which was not dependent on NMDA receptors. NA's facilitating effect on LTP induction was blocked by the β-adrenoceptor antagonist timolol but not by the α-adrenoceptor antagonist phentolamine, and was mimicked by the β-adrenoceptor agonist isoproterenol. The l-type calcium channel blocker nifedipine completely blocked LTP as well as NA-mediated LTP. In addition, we found that aversive olfactory learning was impaired by β-adrenoceptor antagonist, timolol but not by α-adrenoceptor antagonist, phentolamine, and only odor training established olfactory learning by isoproterenol infusion. Moreover, we found that nifedipine but not AP5 prevented olfactory learning formation. These common properties provided evidence for neural correlates between NA-mediated LTP aversive olfactory learning in young rats.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience - Volume 170, Issue 1, 29 September 2010, Pages 259-267
Journal: Neuroscience - Volume 170, Issue 1, 29 September 2010, Pages 259-267
نویسندگان
J.J. Zhang, F. Okutani, G.Z. Huang, M. Taniguchi, Y. Murata, H. Kaba,