Cited by 34Neurotransmitter Receptor Influence on BehaviorNeuropeptides and Animal PhysiologyPrenatal Substance Exposure Effects

Morphine withdrawal syndrome: involvement of the dopaminergic system in prepubertal male and female mice

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Diaz, Silvina L., Kemmling, Alma K., Rubio, Modesto C., Balerio, Graciela N.·2005·Pharmacology Biochemistry and Behavior

Abstract

Morphine (MOR) withdrawal signs are more marked in males than in females. Considering that the influence of the dopaminergic system on these differences is unclear, we analyzed dopamine (DA) and dihydroxyphenylacetic-acid (DOPAC) brain levels during naloxone (NAL)-precipitated withdrawal as well as the involvement of D(1) and D(2) receptors in the expression of MOR withdrawal in either sex. Prepubertal Swiss-Webster mice received MOR (2 mg/kg, i.p.) twice daily for 9 days. On the tenth day, dependent animals received NAL (6 mg/kg, i.p.) after MOR and were sacrificed 30 min later. DA and DOPAC concentrations were determined in different brain areas using HPLC with electrochemical detection. Other pool of mice received either a D(1) (SCH 23390; 0.2 mg/kg, i.p.) or D(2) (raclopride; 0.3 mg/kg, i.p.) receptor antagonist before NAL and withdrawal signs were evaluated. DA and DOPAC levels only decreased in striatum and cortex of withdrawn males. Conversely, both DA receptor antagonists decreased the expression of MOR withdrawal signs in either sex. The neurochemical sex differences described here could partially explain the behavioral sex differences observed during MOR withdrawal. Additionally, SCH-23390 and raclopride effects suggest an important role of both DA receptors in the expression of MOR withdrawal in males and females.

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Crossref · 10.1016/j.pbb.2005.10.012

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  1. [33]33. Samini M, Fakhrian R, Mohagheghi M, Dehpour AR. Comparison of the effect of levodopa and bromocriptine on naloxone-precipitated morphine with- drawal symptoms in mice. Hum Psychopharmacol 2000;15:95 -101.

Authors
Diaz, S. L., Kemmling, A. K., Rubio, M. C., & Balerio, G. N.
Affiliations
Consejo Nacional de Investigaciones Científicas y Técnicas (AR)
Corresponding author
Balerio, Graciela N.
Venue
Pharmacology Biochemistry and Behavior
Publisher
Elsevier BV
Published
2005-12
Volume
82
Issue
4
Pages
601-607
ISSN
0091-3057 (ISSN-L)
OpenAlex
W2162428350
Cited by
34
References
41
Citations by year
2025: 2 · 2024: 2 · 2023: 6 · 2022: 5 · 2021: 1 · 2020: 3 · 2019: 2 · 2018: 1 · 2017: 1 · 2016: 2 · 2015: 1 · 2014: 1 · 2013: 1 · 2012: 1
FWCI
0.36
Type
journal article
Language
en
Open access
Locations
  • Pharmacology Biochemistry and Behavior (publishedVersion)
  • PubMed (publishedVersion)
  • CONICET Digital (CONICET) (submittedVersion, cc-by-nc-sa)
Funders
Universidad de Buenos Aires
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Prenatal Substance Exposure Effects
Keywords
morphine withdrawal, dopaminergic system, sex differences, prepubertal mice, dopamine, DOPAC, dopamine D1 receptor, dopamine D2 receptor, naloxone-precipitated withdrawal, striatum, cortex, dopamine antagonists
MeSH terms
Animals, Behavior, Animal, Brain, Dopamine, Female, Male, Morphine, Sexual Maturation, Substance Withdrawal Syndrome, Receptors, Dopamine D1, Receptors, Dopamine D2, Mice

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