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Iranian Journal of Veterinary Science and Technology، جلد ۱۵، شماره ۲، صفحات ۳۸-۴۷
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عنوان انگلیسی Intra-periaqueductal Grey Matter Injection of Orexin A Attenuates Nitroglycerin-induced Deficits in Learning and Memory in Male Rats
چکیده انگلیسی مقاله This study explored the potential contribution of Orx1R within vlPAG to the learning and memory of animals with chronic migraine-like pain. Migraine was induced by repeated i.p. administration of nitroglycerin (5 mg/kg). Passive avoidance adeptness was evaluated in the shuttle box maze. The spatial memory performance was estimated using MWM tests. In the MWM task, NTG-injected rats revealed an imperative increase in escape latency and traveled the distance to catch the stage and a decrease in the time spent to pass into the goal zone in comparison to the control animals. Such NTG-evoked responses were attenuated by the post-treating intra-vlPAG injection of orexin A at 100 but not 25 and 50 pM. Furthermore, in the shuttle box test, NTG-treated rats showed eversion memory retrieval impairment as reflected by decreased phase through latency and longer time spent in the black chambers of the maze. Administration of orexin A at 50 and 100 pM could suppress NTG-related eversion memory deficiency in rats. However, orexin A (100 pM) aptitude to preserve memory performance, in both MWM and shuttle box tasks, was significantly prevented by SB334867 (20 nM) as an Orx1R antagonist. Overall, these data support the role of Orx1R within vlPAG to modulate migraine-related cognition deficits in rats. 
کلیدواژه‌های انگلیسی مقاله Migraine, Nitroglycerin, Orexin A, learning and memory, Rats
نویسندگان مقاله Razieh Kooshki |
Department of Biology, Faculty of Science, Lorestan University, Khorramabad, Iran.

Mehdi Abbasnejad |
Department of Biology, Faculty of Sciences, Shahid Bahonar University of Kerman, Kerman, Iran.

Baharosadat Majdzadeh |
Department of Biology, Faculty of Sciences, Shahid Bahonar University of Kerman, Kerman, Iran.

نشانی اینترنتی https://ijvst.um.ac.ir/article_43875_01469d4c63a4dd7374fd925567b09cc8.pdf
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