Attenuation of morphine withdrawal signs by a D1 receptor agonist in the locus coeruleus of rats

In the present study, the effects of intra-locus coeruleus injection of a dopamine D1 receptor agonist (SKF38393) on naloxone-induced withdrawal signs of morphine-dependent rats were examined. Twenty different withdrawal signs were assessed. The total withdrawal score was calculated and used as an i...

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Veröffentlicht in:Neuroreport 2005-10, Vol.16 (15), p.1683-1686
Hauptverfasser: Dizgah, Iraj Mirzaii, Karimian, Seyed Morteza, Zarrindast, Mohammad Reza, Sohanaki, Hamid
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creator Dizgah, Iraj Mirzaii
Karimian, Seyed Morteza
Zarrindast, Mohammad Reza
Sohanaki, Hamid
description In the present study, the effects of intra-locus coeruleus injection of a dopamine D1 receptor agonist (SKF38393) on naloxone-induced withdrawal signs of morphine-dependent rats were examined. Twenty different withdrawal signs were assessed. The total withdrawal score was calculated and used as an index of withdrawal intensity for comparison. The D1 agonist and antagonist were injected 15 and 30 min prior to expression of naloxone-induced withdrawal signs, respectively. SKF38393 (2 and 4 μg/site) decreased while SCH23390 (a D1 antagonist) had no effect on the total withdrawal score. On the other hand, SCH23390 (25 ng/site) reversed the SKF38393 effect. It may be concluded that activation of dopamine D1 receptors in the locus coeruleus attenuates naloxone-induced withdrawal.
doi_str_mv 10.1097/01.wnr.0000180142.91644.65
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inhibitors</topic><topic>Substance Withdrawal Syndrome - drug therapy</topic><topic>Toxicology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Dizgah, Iraj Mirzaii</creatorcontrib><creatorcontrib>Karimian, Seyed Morteza</creatorcontrib><creatorcontrib>Zarrindast, Mohammad Reza</creatorcontrib><creatorcontrib>Sohanaki, Hamid</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Animal Behavior Abstracts</collection><collection>Neurosciences Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><jtitle>Neuroreport</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Dizgah, Iraj Mirzaii</au><au>Karimian, Seyed Morteza</au><au>Zarrindast, Mohammad Reza</au><au>Sohanaki, Hamid</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Attenuation of morphine withdrawal signs by a D1 receptor agonist in the locus coeruleus of rats</atitle><jtitle>Neuroreport</jtitle><addtitle>Neuroreport</addtitle><date>2005-10-17</date><risdate>2005</risdate><volume>16</volume><issue>15</issue><spage>1683</spage><epage>1686</epage><pages>1683-1686</pages><issn>0959-4965</issn><eissn>1473-558X</eissn><abstract>In the present study, the effects of intra-locus coeruleus injection of a dopamine D1 receptor agonist (SKF38393) on naloxone-induced withdrawal signs of morphine-dependent rats were examined. 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subjects 2,3,4,5-Tetrahydro-7,8-dihydroxy-1-phenyl-1H-3-benzazepine - administration & dosage
2,3,4,5-Tetrahydro-7,8-dihydroxy-1-phenyl-1H-3-benzazepine - antagonists & inhibitors
2,3,4,5-Tetrahydro-7,8-dihydroxy-1-phenyl-1H-3-benzazepine - therapeutic use
Animals
Behavior, Animal - drug effects
Benzazepines - administration & dosage
Benzazepines - pharmacology
Biological and medical sciences
Dopamine Agonists - administration & dosage
Dopamine Agonists - therapeutic use
Drug addictions
Injections
Locus Coeruleus - physiology
Male
Medical sciences
Morphine Dependence
Naloxone - administration & dosage
Naloxone - pharmacology
Narcotic Antagonists - administration & dosage
Narcotic Antagonists - pharmacology
Rats
Rats, Wistar
Receptors, Dopamine D1 - agonists
Receptors, Dopamine D1 - antagonists & inhibitors
Substance Withdrawal Syndrome - drug therapy
Toxicology
title Attenuation of morphine withdrawal signs by a D1 receptor agonist in the locus coeruleus of rats
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