HIPPOCAMPAL OPIOID RECEPTORS MEDIATE THE EFFECTS OF PERIPHERAL CORTICOSTERONE ON CONSOLIDATION AND RETRIEVAL OF SPATIAL MEMORY IN RAT

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VAFAEI ABAS ALI; RASHIDIPOUR A.; SAJADI AHMAD ALI

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Journal: Cell Journal (Yakhteh) Year:2008 | Volume:9 | Issue:4 (36) Page(s): 268-275

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Title

HIPPOCAMPAL OPIOID RECEPTORS MEDIATE THE EFFECTS OF PERIPHERAL CORTICOSTERONE ON CONSOLIDATION AND RETRIEVAL OF SPATIAL MEMORY IN RAT

Author(s)

VAFAEI ABAS ALI | RASHIDIPOUR A. | SAJADI AHMAD ALI | Issue Writer Certificate

Keywords

HIPPOCAMPUSQ2

WATER MAZEQ3

SPATIAL MEMORYQ2

NALTHROXONEQ2

CORTICOSTERONEQ2

Abstract

Objective: Strong evidence indicate that activity of glucocorticoid receptors is necessary for emotional memory processess and these effects probably are mediated by hipppocampal opioid receptors. The aim of this study was to test whether there were any interaction between glucocorticoid and hippocampal opiate receptors on consolidtaion and retrieval of SPATIAL MEMORY. Materials and Methods: In this experimental study, 120 male Wistar rats (250-300 gr) were used. At first, the animals underwent surgery implant canulae in bilateraly of dorsal HIPPOCAMPUS (DH). Then one week later they were trained in a WATER MAZE task with eight trials for one day for consolidation and six trials per day for six consecutive days for retrieval processes. The retention of the spatial training was assessed 24h after the last training session with a 60-s probe trial. CORTICOSTERONE (1mg/kg the best dose) was injected IP immediately after training or 30 min before retrieval. Also NALTHROXONE (10 and 20mg/ul/ per side) was injected bilaterally into hippocmapus immediately after training or 60 min before retrieval test.Results: The results indicated that injection of corticostrone immediatly after training or 30 min before retention significantly enhanced or impaired consolidation and retrieval memory respectively (p<0.01) and these effects were blocked by injection of naltroxone in to DH (p<0.05) in either cases.Conclusion: The findings suggest that the opioid receptors in HIPPOCAMPUS play an important role in mediating the enhancing or impairing effects of systemic CORTICOSTERONE on memory consolidation and retrieval.

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APA: Copy

VAFAEI, ABAS ALI, RASHIDIPOUR, A., & SAJADI, AHMAD ALI. (2008). HIPPOCAMPAL OPIOID RECEPTORS MEDIATE THE EFFECTS OF PERIPHERAL CORTICOSTERONE ON CONSOLIDATION AND RETRIEVAL OF SPATIAL MEMORY IN RAT. CELL JOURNAL (YAKHTEH), 9(4 (36)), 268-275. SID. https://sid.ir/paper/16479/en

Vancouver: Copy

VAFAEI ABAS ALI, RASHIDIPOUR A., SAJADI AHMAD ALI. HIPPOCAMPAL OPIOID RECEPTORS MEDIATE THE EFFECTS OF PERIPHERAL CORTICOSTERONE ON CONSOLIDATION AND RETRIEVAL OF SPATIAL MEMORY IN RAT. CELL JOURNAL (YAKHTEH)[Internet]. 2008;9(4 (36)):268-275. Available from: https://sid.ir/paper/16479/en

IEEE: Copy

ABAS ALI VAFAEI, A. RASHIDIPOUR, and AHMAD ALI SAJADI, “HIPPOCAMPAL OPIOID RECEPTORS MEDIATE THE EFFECTS OF PERIPHERAL CORTICOSTERONE ON CONSOLIDATION AND RETRIEVAL OF SPATIAL MEMORY IN RAT,” CELL JOURNAL (YAKHTEH), vol. 9, no. 4 (36), pp. 268–275, 2008, [Online]. Available: https://sid.ir/paper/16479/en

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