The Effect of Nitric Oxide Microinjection in Nucleus Accumbens Shell on Morphine Withdrawal Signs in Male Rats
Introduction: This study was performed to evaluate the effects of intra-nucleus accumbens shell microinjection of Larginine (NO precursor) and L-NAME (nitric oxide synthase (NOS) inhibitor) on morphine withdrawal signs in male rats. Method: Rats were anaesthetized with a combination of ketamine and...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Kerman University of Medical Sciences
2005-09-01
|
| Series: | Journal of Kerman University of Medical Sciences |
| Subjects: | |
| Online Access: | https://jkmu.kmu.ac.ir/article_31986_247af64f18c2487de6286e4cf831630e.pdf |
| _version_ | 1827911758205943808 |
|---|---|
| author | V Sheibani Gh Sepehri F Baghaiee R Farazifard |
| author_facet | V Sheibani Gh Sepehri F Baghaiee R Farazifard |
| author_sort | V Sheibani |
| collection | DOAJ |
| description | Introduction: This study was performed to evaluate the effects of intra-nucleus accumbens shell microinjection of Larginine (NO precursor) and L-NAME (nitric oxide synthase (NOS) inhibitor) on morphine withdrawal signs in male rats. Method: Rats were anaesthetized with a combination of ketamine and xylazine, and placed in stereotaxic apparatus, and a guide cannula was inserted into nucleus accumbens (Nacc) shell, (1.7 mm Anterior to bregma, 0.8 mm bilaterally to bregma and 7.1 mm depth from skull surface). Morphine dependency was induced by subcutaneous administration of morphine (10-20 mg/kg for 5 days), and morphine withdrawal signs were precipitated by naloxone administration (4 mg/kg/ip). Rats received either single or repeated microinjections of saline, L-arginine or L-NAME into Nacc shell during the scheduled periods for 5 days. In Sham group, bilateral canulla was inserted into Nacc shell , but no drug was microinjected, and in saline group only normal saline was injected into Nacc shell in the same way as the experimental groups during the scheduled periods.Control group was intact. Results: The results of this study showed no significant difference between control and saline treated groups in the expression of morphine withdrawal signs. Single dose microinjection of L-NAME / L-arginine, just prior to the last injection of morphine, had no effect on morphine withdrawal signs, but repeated microinjection of L-arginine / LNAME decreased jumping, rearing and weight loss (only in L-NAME group), as compared to control rats. Conclusion: The obtained results indicate that NO injection in Nacc shell may be involved in some of morphine withdrawal signs |
| first_indexed | 2024-03-13T02:06:57Z |
| format | Article |
| id | doaj.art-37b9b5547d844ce18db71f6229d4a424 |
| institution | Directory Open Access Journal |
| issn | 2008-2843 |
| language | English |
| last_indexed | 2024-03-13T02:06:57Z |
| publishDate | 2005-09-01 |
| publisher | Kerman University of Medical Sciences |
| record_format | Article |
| series | Journal of Kerman University of Medical Sciences |
| spelling | doaj.art-37b9b5547d844ce18db71f6229d4a4242023-07-01T05:41:52ZengKerman University of Medical SciencesJournal of Kerman University of Medical Sciences2008-28432005-09-0112422823631986The Effect of Nitric Oxide Microinjection in Nucleus Accumbens Shell on Morphine Withdrawal Signs in Male RatsV Sheibani0Gh Sepehri1F Baghaiee2R Farazifard3Assistant professor of Physiology, Kerman Neuroscience Research Center, Kerman University of Medical Sciences and Health Services, Kerman, Iran.Associate Professor of Pharmacology, School of Farmacy, Kerman University of Medical Sciences and Health Services, Kerman, Iran.M.Sc in Physiology, Department of Physiology and Pharmacology, Kerman University of Medical Sciences and Health Services, Kerman, IranM.Sc in Physiology, Kerman Neuroscience Research Center, Kerman University of Medical Sciences, and Health Services, Kerman, Iran.Introduction: This study was performed to evaluate the effects of intra-nucleus accumbens shell microinjection of Larginine (NO precursor) and L-NAME (nitric oxide synthase (NOS) inhibitor) on morphine withdrawal signs in male rats. Method: Rats were anaesthetized with a combination of ketamine and xylazine, and placed in stereotaxic apparatus, and a guide cannula was inserted into nucleus accumbens (Nacc) shell, (1.7 mm Anterior to bregma, 0.8 mm bilaterally to bregma and 7.1 mm depth from skull surface). Morphine dependency was induced by subcutaneous administration of morphine (10-20 mg/kg for 5 days), and morphine withdrawal signs were precipitated by naloxone administration (4 mg/kg/ip). Rats received either single or repeated microinjections of saline, L-arginine or L-NAME into Nacc shell during the scheduled periods for 5 days. In Sham group, bilateral canulla was inserted into Nacc shell , but no drug was microinjected, and in saline group only normal saline was injected into Nacc shell in the same way as the experimental groups during the scheduled periods.Control group was intact. Results: The results of this study showed no significant difference between control and saline treated groups in the expression of morphine withdrawal signs. Single dose microinjection of L-NAME / L-arginine, just prior to the last injection of morphine, had no effect on morphine withdrawal signs, but repeated microinjection of L-arginine / LNAME decreased jumping, rearing and weight loss (only in L-NAME group), as compared to control rats. Conclusion: The obtained results indicate that NO injection in Nacc shell may be involved in some of morphine withdrawal signshttps://jkmu.kmu.ac.ir/article_31986_247af64f18c2487de6286e4cf831630e.pdfnucleus accumbensnitric oxidel-argininel-namemorphine dependencymorphine withdrawal |
| spellingShingle | V Sheibani Gh Sepehri F Baghaiee R Farazifard The Effect of Nitric Oxide Microinjection in Nucleus Accumbens Shell on Morphine Withdrawal Signs in Male Rats Journal of Kerman University of Medical Sciences nucleus accumbens nitric oxide l-arginine l-name morphine dependency morphine withdrawal |
| title | The Effect of Nitric Oxide Microinjection in Nucleus Accumbens Shell on Morphine Withdrawal Signs in Male Rats |
| title_full | The Effect of Nitric Oxide Microinjection in Nucleus Accumbens Shell on Morphine Withdrawal Signs in Male Rats |
| title_fullStr | The Effect of Nitric Oxide Microinjection in Nucleus Accumbens Shell on Morphine Withdrawal Signs in Male Rats |
| title_full_unstemmed | The Effect of Nitric Oxide Microinjection in Nucleus Accumbens Shell on Morphine Withdrawal Signs in Male Rats |
| title_short | The Effect of Nitric Oxide Microinjection in Nucleus Accumbens Shell on Morphine Withdrawal Signs in Male Rats |
| title_sort | effect of nitric oxide microinjection in nucleus accumbens shell on morphine withdrawal signs in male rats |
| topic | nucleus accumbens nitric oxide l-arginine l-name morphine dependency morphine withdrawal |
| url | https://jkmu.kmu.ac.ir/article_31986_247af64f18c2487de6286e4cf831630e.pdf |
| work_keys_str_mv | AT vsheibani theeffectofnitricoxidemicroinjectioninnucleusaccumbensshellonmorphinewithdrawalsignsinmalerats AT ghsepehri theeffectofnitricoxidemicroinjectioninnucleusaccumbensshellonmorphinewithdrawalsignsinmalerats AT fbaghaiee theeffectofnitricoxidemicroinjectioninnucleusaccumbensshellonmorphinewithdrawalsignsinmalerats AT rfarazifard theeffectofnitricoxidemicroinjectioninnucleusaccumbensshellonmorphinewithdrawalsignsinmalerats AT vsheibani effectofnitricoxidemicroinjectioninnucleusaccumbensshellonmorphinewithdrawalsignsinmalerats AT ghsepehri effectofnitricoxidemicroinjectioninnucleusaccumbensshellonmorphinewithdrawalsignsinmalerats AT fbaghaiee effectofnitricoxidemicroinjectioninnucleusaccumbensshellonmorphinewithdrawalsignsinmalerats AT rfarazifard effectofnitricoxidemicroinjectioninnucleusaccumbensshellonmorphinewithdrawalsignsinmalerats |