THE IMPACT OF THE INJECTION OF CANNABINOIDERGIC DRUGS IN THE DORSAL HIPPOCAMPUS ON THE MEMORY RETRIEVAL OF DOPAMINE SENSITIZED RATS

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NASEHI M.; ZARINDAST M.R.; HAERI ROUHANI SEYED ALI; SAHEBGHARANI M.

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Journal: Advances in Cognitive Sciences Year:2009 | Volume:10 | Issue:4 (40) Page(s): 71-82

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Title

THE IMPACT OF THE INJECTION OF CANNABINOIDERGIC DRUGS IN THE DORSAL HIPPOCAMPUS ON THE MEMORY RETRIEVAL OF DOPAMINE SENSITIZED RATS

Author(s)

NASEHI M. | ZARINDAST M.R. | HAERI ROUHANI SEYED ALI | SAHEBGHARANI M. | Issue Writer Certificate

Keywords

CANNABINOIDSQ3

HIPPOCAMPUSQ3

SENSITIZATIONQ3

APOMORPHINEQ3

PASSIVE AVOIDANCE TASKQ2

MEMORYQ3

RATQ2

Abstract

Objective: In present study, the effects of intra-dorsal hippocampal (intra-CA1) injection of cannabinoid receptor agents on MEMORY retrieval have been investigated in 3-days APOMORPHINE-treated RATs. Method: PASSIVE AVOIDANCE TASK of MEMORY has been used to examine the MEMORY retrieval, 24 h after training. APOMORPHINE was injected subcutaneously (S.C.), once daily for 3-days followed by 5 days free of the APOMORPHINE before training. Results: Post-training intra-CA1 infusions of the non-selective CB1-CB2 receptor agonist, WIN55, 212-2 (0.1, 0.25 and 0.5 mg/rat), dose-dependently shortened the step-through latency, suggesting impaired MEMORY retrieval, whereas post-training intra-CA1 microinjections of the selective CB1 receptor antagonist, AM251 (25, 50 and 100 ng/rat) did not affect MEMORY retrieval. Intra-CA1 infusions of AM251 and WIN55, 212-2, two min apart, did not modify the WIN55, 212-2-induced reduction of step-through latency. However, the deleterious effect of WIN55, 212-2 (0.25 mg/rat) was completely abolished in RATs previously given APOMORPHINE (0.5 and 1 mg/kg/day, S.C.) for 3 days. This reversal of WIN55, 212-2- induced amnestic-like effect was counteracted by the dopamine D2 receptor antagonist, sulpiride (0.25, 0.5 and 1 mg/kg/day×3-days, S.C.), administered 30 min before each injection of APOMORPHINE (0.5 mg/kg/day×3-days, S.C.). The D1 receptor antagonist, SCH 23390 (0.01, 0.02, 0.07 and 0.1 mg/kg/day×3-days, S.C.), was ineffective in this respect. Conclusion: The results suggest that subchronic APOMORPHINE treatement may induce dopamine D2 receptor SENSITIZATION, which in turn reversed amnesia induced by WIN55, 212-2.

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References

تغییر حساسیت گیرنده D1 دوپامینی در ناحیه پشتی هیپو کامپ (CA1) و تاثیر آن بر روی ترجیح مکان شرطی شده ناشی از مرفین (CPP)

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APA: Copy

NASEHI, M., ZARINDAST, M.R., HAERI ROUHANI, SEYED ALI, & SAHEBGHARANI, M.. (2009). THE IMPACT OF THE INJECTION OF CANNABINOIDERGIC DRUGS IN THE DORSAL HIPPOCAMPUS ON THE MEMORY RETRIEVAL OF DOPAMINE SENSITIZED RATS. ADVANCES IN COGNITIVE SCIENCE, 10(4 (40)), 71-82. SID. https://sid.ir/paper/83087/en

Vancouver: Copy

NASEHI M., ZARINDAST M.R., HAERI ROUHANI SEYED ALI, SAHEBGHARANI M.. THE IMPACT OF THE INJECTION OF CANNABINOIDERGIC DRUGS IN THE DORSAL HIPPOCAMPUS ON THE MEMORY RETRIEVAL OF DOPAMINE SENSITIZED RATS. ADVANCES IN COGNITIVE SCIENCE[Internet]. 2009;10(4 (40)):71-82. Available from: https://sid.ir/paper/83087/en

IEEE: Copy

M. NASEHI, M.R. ZARINDAST, SEYED ALI HAERI ROUHANI, and M. SAHEBGHARANI, “THE IMPACT OF THE INJECTION OF CANNABINOIDERGIC DRUGS IN THE DORSAL HIPPOCAMPUS ON THE MEMORY RETRIEVAL OF DOPAMINE SENSITIZED RATS,” ADVANCES IN COGNITIVE SCIENCE, vol. 10, no. 4 (40), pp. 71–82, 2009, [Online]. Available: https://sid.ir/paper/83087/en

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