کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6275452 1614856 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Intracerebroventricular injection of kynurenic acid attenuates corticotrophin-releasing hormone-augmented stress responses in neonatal chicks
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
Intracerebroventricular injection of kynurenic acid attenuates corticotrophin-releasing hormone-augmented stress responses in neonatal chicks
چکیده انگلیسی

In the brain of neonatal chicks, tryptophan has a sedative effect, and a part of this effect might be dependent upon its metabolite, serotonin. However, the functional mechanisms have not been fully clarified, since l-tryptophan produces kynurenic acid (KYNA) through the kynurenine pathway. The present study aimed to clarify the effect of KYNA on the stress response upon social isolation. Intracerebroventricular injection of KYNA induced a strong sedative effect under stress compared with the effect of l-tryptophan, with or without intracerebroventricular injection of corticotrophin-releasing hormone (CRH). KYNA dose-dependently induced sedative and hypnotic effects under CRH-augmented social isolation stress. Taken together, these results indicate that KYNA is a likely candidate for the sedative and hypnotic effects of tryptophan under acutely stressful conditions.

► Kynurenic acid seemed to have a stronger sedative effect than tryptophan under social isolation stress. ► Intracerebroventricular injection of kynurenic acid induced a strong sedative effect under stress. ► Kynurenic acid is a likely candidate for the sedative and hypnotic effects of tryptophan under acutely stressful conditions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience - Volume 220, 18 September 2012, Pages 142-148
نویسندگان
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