Cited by 52Neurotransmitter Receptor Influence on BehaviorNeuroscience and Neuropharmacology ResearchMemory and Neural Mechanisms

D1 and D2 dopaminergic systems in the rat basolateral amygdala are involved in anxiogenic-like effects induced by histamine

Bananej, Maryam, Karimi-Sori, Ahmad, Zarrindast, Mohammad Reza, Ahmadi, Shamseddin·2012·Journal of Psychopharmacology

Abstract

Involvement of the dopamine receptors in the basolateral amygdala (BLA) in the effects of histamine on anxiety-like behaviors of the elevated plus maze in male Wistar rats was investigated. The results showed that bilateral intra-BLA injections of histamine (2.5, 5 and 7.5 µg/rat) induced an anxiogenic-like effect, revealed by decreases in percentage of open arm time (%OAT) and open arm entries (%OAE). Intra-BLA administration of dopamine D1 receptor agonist, SKF38393 (0.25 µg/rat), and dopamine D2 receptor agonist, quinpirole (0.03 and 0.05 µg/rat), decreased %OAT but not %OAE. Conversely, intra-BLA administration of dopamine D1 receptor antagonist, SCH23390 (0.5 and 1 µg/rat), and dopamine D2 receptor antagonist, sulpiride (0.3 and 0.5 µg/rat), increased %OAT and %OAE, suggesting an anxiolytic-like effect for both drugs. Interestingly, co-administration of a silent dose of SCH23390 or sulpiride prevented anxiogenic-like effects of SKF38393 and quinpirole, respectively. Conjoint administration of a sub-effective dose of SKF38393 (0.125 µg/rat) or quinpirole (0.01 µg/rat) along with lower doses of histamine (1 and 2.5 µg/rat) induced anxiolytic-like effects. On the other hand, intra-BLA pretreatment with a silent dose of SCH23390 (0.25 µg/rat) or sulpiride (0.1 µg/rat) prevented the anxiogenic-like effect of higher doses of histamine (5 and 7.5 µg/rat). No significant change was observed in total closed arm entries, as an index for motor activity of the animals. It can be concluded that the dopamine D1 and D2 receptors in the BLA may be involved in the anxiogenic-like effects induced by histamine.

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Crossref · 10.1177/0269881111405556

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Authors
Bananej, M., Karimi-Sori, A., Zarrindast, M. R., & Ahmadi, S.
Affiliations
  • Islamic Azad University, Tehran (IR)
  • Tehran University of Medical Sciences (IR)
  • University of Kurdistan (IR)
Venue
Journal of Psychopharmacology
Published
2011-05-31
Volume
26
Issue
4
Pages
564-574
ISSN
  • 0269-8811 (ISSN-L)
  • 1461-7285
OpenAlex
W2141363263
Cited by
52
References
53
Citations by year
2025: 3 · 2024: 6 · 2023: 3 · 2022: 9 · 2021: 2 · 2020: 3 · 2019: 2 · 2018: 2 · 2017: 3 · 2016: 3 · 2015: 3 · 2014: 2 · 2013: 4 · 2012: 7
FWCI
1.72
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Psychopharmacology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
dopamine D1 receptor, dopamine D2 receptor, basolateral amygdala, histamine, anxiogenic effects, anxiolytic effects, elevated plus maze, SKF 38393, quinpirole, SCH 23390, sulpiride, anxiety-like behavior
MeSH terms
Amygdala, Animals, Anxiety, Benzazepines, Histamine, Male, Sulpiride, Rats, Wistar, Receptors, Dopamine D1, Receptors, Dopamine D2, Maze Learning, Quinpirole, Rats

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