کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4330971 | 1614283 | 2007 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Cholecystokinin-2 receptors modulate freezing and escape behaviors evoked by the electrical stimulation of the rat dorsolateral periaqueductal gray
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کلمات کلیدی
CCKdPAGdlPAGCCK-4DMPAGFreezing - انجمادFear - ترسperiaqueductal gray - خاکستری پرآبیdorsomedial periaqueductal gray - خاکستری پرایاکتومیdorsolateral periaqueductal gray - خاکستری پرایاکتیوال دو طرفهdorsal periaqueductal gray - خاکستری پرایکتون پشتی پشتیescape - در رفتنPanic - پانیکcholecystokinin - کولهسیستوکینینCCK2 receptor - گیرنده CCK2
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Cholecystokinin-2 receptors modulate freezing and escape behaviors evoked by the electrical stimulation of the rat dorsolateral periaqueductal gray Cholecystokinin-2 receptors modulate freezing and escape behaviors evoked by the electrical stimulation of the rat dorsolateral periaqueductal gray](/preview/png/4330971.png)
چکیده انگلیسی
Systemic injection of the cholecystokinin type 2 (CCK2) receptor agonist CCK-4 evokes panic attacks in humans and facilitates the expression of a panic-related defensive behavior, escape, in rats. Given the prominent role attributed to the dorsal periaqueductal gray (dPAG) in the pathophysiology of panic, this midbrain area has been assumed to be one of the key regions mediating these effects of CCK-4. However, only a few studies have directly investigated the role of dPAG CCK2 receptors in the regulation of panic-related behaviors. Even more disappointingly, the results of these investigations have been far from conclusive. In the present study we further addressed this issue by evaluating the effect of the intra-dorsolateral periaqueductal gray (dlPAG) injection of CCK-4 on two panic-related defensive behaviors, freezing and escape, evoked in male Wistar rats by the electrical stimulation of the dlPAG. The effects of CCK-4 (0.005-0.5 μg/0.2 μl) were compared to those caused by the local microinjection of the CCK2 receptor antagonist LY225910 (0.001-1.0 μg/0.2 μl). The results showed that whereas CCK-4 facilitated the expression of both freezing and escape behaviors, LY225910 had the opposite effect. Pretreatment with an ineffective dose of LY225910 prevented the panicogenic-like effect of CCK-4. These results strengthen the view that CCK2 receptors located in the dlPAG are involved in the regulation of panic-related behaviors and may mediate the effect of CCK-4 on panic.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Brain Research - Volume 1156, 2 July 2007, Pages 133-138
Journal: Brain Research - Volume 1156, 2 July 2007, Pages 133-138
نویسندگان
Leandro José Bertoglio, Valquiria Camin de Bortoli, Hélio Jr.,