μ-Opioid receptor in the CA1 involves in tramadol and morphine cross state-dependent memory
| Autor: | Setareh Nouri Zadeh-Tehrani, Mohammad-Reza Zarrindast, Ardeshir Akbarabadi, Afarin Rahimi-Movaghar, Mitra-Sadat Sadat-Shirazi, Saba Niknamfar |
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| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Agonist Male Microinjections medicine.drug_class Receptors Opioid mu Amnesia Pharmacology Naltrexone 03 medical and health sciences 0302 clinical medicine Opioid receptor Memory medicine Avoidance Learning Animals Drug Interactions CA1 Region Hippocampal Tramadol Opioidergic Dose-Response Relationship Drug Morphine business.industry General Neuroscience Rats 030104 developmental biology nervous system Opioid Mental Recall medicine.symptom business 030217 neurology & neurosurgery medicine.drug |
| Zdroj: | Neuroscience letters. 705 |
| ISSN: | 1872-7972 |
| Popis: | In the present study, the effect of tramadol – an opioid painkiller drug with abuse potential- on amnesia and state-dependent memory and its interaction with the opioidergic system was investigated in male Wistar rats. Intra CA-1 administration of tramadol (0.5, 1, and 2 μg/rat) before training, dose-dependently decreased the learning ability in passive avoidance task. Amnesia induced by pre-train tramadol administration was significantly reversed by pre-test administration of tramadol (1 μg/rat). Pre-test administration of naltrexone (a μ-opioid receptor (MOR) antagonist) inhibited the effect of tramadol on memory retrieval. In addition, the pre-test administration of morphine (1 μg/rat, intra-CA1) also reversed memory impairment induced by pre-train tramadol administration. Although, pre-train morphine administration (1 μg/rat, intra-CA1), induced memory impairment reversed by pre-test tramadol administration (1 μg/rat, intra-CA1). In addition, the level of MOR in the hippocampus decreased in animals with memory impairment due to using tramadol in the training day. However, state-dependent retrieval using tramadol or cross state-dependent retrieval using morphine enhanced the MOR level in the hippocampus. The results of the study suggested that intra-CA1 tramadol administration induced memory impairment, improved by pre-test administration of either tramadol or morphine (MOR agonist). It could be concluded that tramadol is capable to induced state-dependent memory and also, it has a cross state-dependent memory with morphine in the hippocampus, done possibly through MOR. |
| Databáze: | OpenAIRE |
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