کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9118805 | 1157779 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Medial septal galanin and acetylcholine: influence on hippocampal acetylcholine and spatial learning
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
علوم غدد
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چکیده انگلیسی
The effect of intraseptal galanin on basal acetylcholine release in the ventral hippocampus was examined by in vivo microdialysis and high-performance liquid chromatography. Both galanin (3 nmol/rat) and scopolamine (10 μg/rat) infused into the MS/dBB increased basal acetylcholine release in the ventral hippocampus. The combined injections of galanin and scopolamine resulted in an excessive increase in acetylcholine release. These results indicate, that galanin activates septohippocampal cholinergic neurons, suggesting that septal galanin may have a facilitatory role in spatial learning. Moreover, the level of muscarinic activity within the septal area appears to be critical for the effects of galanin on cognitive functions, since the combination of galanin and scopolamine produced a marked impairment in spatial learning, despite a marked increase in hippocampal acetylcholine release. In summary, a limited range of cholinergic muscarinic transmission may contribute to optimal hippocampal function, a finding that has important implications for therapeutic approaches in the treatment of disorders of memory function.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuropeptides - Volume 39, Issue 3, June 2005, Pages 245-248
Journal: Neuropeptides - Volume 39, Issue 3, June 2005, Pages 245-248
نویسندگان
E. Elvander, S.O. Ãgren,