کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6281936 | 1615123 | 2014 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Orexin-1 receptor mediates the increased food and water intake induced by intracerebroventricular injection of the stable somatostatin pan-agonist, ODT8-SST in rats
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کلمات کلیدی
SSTNPYOX2RICVintracerebroventricular(ly)OX1RSB-334867LHAOrexin-2 receptorOrexin-1 receptorDMSO - DMSOOrexin-A - اورکسین ADimethylsulfoxide - دیمتیل سولفواکسیدWater intake - مصرف آبfood intake - مصرف غذاlateral hypothalamic area - منطقه هیپوتالاموس جانبیSomatostatin receptor - گیرنده سوماتوستاتینNeuropeptide Y - یوروپروتئین Y
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Intracerebroventricular (icv) injection of the stable somatostatin pan-agonist, ODT8-SST induces a somatostatin 2 receptor (sst2) mediated robust feeding response that involves neuropeptide Y and opioid systems in rats. We investigated whether the orexigenic system driven by orexin also plays a role. Food and water intake after icv injection was measured concomitantly in non-fasted and non-water deprived rats during the light phase. In vehicle treated rats (100% DMSO, icv), ODT8-SST (1 μg/rat, icv) significantly increased the 2-h food and water intake compared to icv vehicle plus saline (5.1 ± 1.0 g vs. 1.2 ± 0.4 g and 11.3 ± 1.9 mL vs. 2.5 ± 1.2 mL, respectively). The orexin-1 receptor antagonist, SB-334867 (16 μg/rat, icv) completely inhibited the 2-h food and water intake induced by icv ODT8-SST. In contrast, the icv pretreatment with the selective somatostatin sst2 antagonist, S-406-028, established to block the orexigenic effect of icv ODT8-SST, did not modify the increased food and water intake induced by icv orexin-A (10.7 μg/rat). These data indicate that orexin-1 receptor signaling system is part of the brain neurocircuitry contributing to the orexigenic and dipsogenic responses induced by icv ODT8-SST and that orexin-A stimulates food intake independently from brain sst2 activation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience Letters - Volume 576, 25 July 2014, Pages 88-92
Journal: Neuroscience Letters - Volume 576, 25 July 2014, Pages 88-92
نویسندگان
Hiroshi Karasawa, Seiichi Yakabi, Lixin Wang, Yvette Taché,