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|Title:||The CCK2agonist BC264 reverses freezing behavior habituation in PVG hooded rats on repeated exposures to a cat|
PVG hooded and Sprague-Dawley
|Citation:||Farook, J.M., McLachlan, C.S., Zhu, Y.Z., Wong, P.T.-H., Lee, L., Moochhala, S.M. (2004). The CCK2agonist BC264 reverses freezing behavior habituation in PVG hooded rats on repeated exposures to a cat. Neuroscience Letters 355 (3) : 205-208. ScholarBank@NUS Repository. https://doi.org/10.1016/j.neulet.2003.11.010|
|Abstract:||Our previous studies (NeuroReport 12 (2001) 2717) showed that PVG hooded and not Sprague-Dawley (SD) rats exhibit remarkable freezing behavior on exposure to a cat in the cat freezing test apparatus. In the present study, we further examined the differences between these two strains of rats in response to repeated daily exposure to a cat in the cat freezing test apparatus. Freezing behavior habituation was observed in both PVG hooded (days 5-7) and SD rats (days 3-7). A selective CCK2 agonist (BC264, 0.3 μg/kg, i.p.) on day 8 reversed habituated freezing behavior and locomotor activity in PVG hooded rats, but not in SD rats. These results suggest that CCK2 receptors mediate habituation to an anxiety-inducing stimulus in PVG hooded rats and further suggest that differential expression of these CCK2 receptors underlies this strain difference. © 2003 Elsevier Ireland Ltd. All rights reserved.|
|Source Title:||Neuroscience Letters|
|Appears in Collections:||Staff Publications|
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