کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5816172 | 1115562 | 2009 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
GABAA receptors as in vivo substrate for the anxiolytic action of valerenic acid, a major constituent of valerian root extracts
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب رفتاری
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: GABAA receptors as in vivo substrate for the anxiolytic action of valerenic acid, a major constituent of valerian root extracts GABAA receptors as in vivo substrate for the anxiolytic action of valerenic acid, a major constituent of valerian root extracts](/preview/png/5816172.png)
چکیده انگلیسی
Valerian extracts have been used for centuries to alleviate restlessness and anxiety albeit with unknown mechanism of action in vivo. We now describe a specific binding site on GABAA receptors with nM affinity for valerenic acid and valerenol, common constituents of valerian. Both agents enhanced the response to GABA at multiple types of recombinant GABAA receptors. A point mutation in the β2 or β3 subunit (N265M) of recombinant receptors strongly reduced the drug response. In vivo, valerenic acid and valerenol exerted anxiolytic activity with high potencies in the elevated plus maze and the light/dark choice test in wild type mice. In β3 (N265M) point-mutated mice the anxiolytic activity of valerenic acid was absent. Thus, neurons expressing β3 containing GABAA receptors are a major cellular substrate for the anxiolytic action of valerian extracts.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuropharmacology - Volume 56, Issue 1, January 2009, Pages 174-181
Journal: Neuropharmacology - Volume 56, Issue 1, January 2009, Pages 174-181
نویسندگان
Dietmar Benke, Andrea Barberis, Sascha Kopp, Karl-Heinz Altmann, Monika Schubiger, Kaspar E. Vogt, Uwe Rudolph, Hanns Möhler,