Cited by 93Neuroendocrine regulation and behaviorNeurotransmitter Receptor Influence on BehaviorNeuropeptides and Animal Physiology

μ-Opioid receptors within subregions of the striatum mediate pair bond formation through parallel yet distinct reward mechanisms

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Resendez, Shanna L., Dome, Mackenzie, Gormley, Gwen, Franco, Dena, Nevárez, Natalie, Hamid, Arif A., Aragona, Brandon J.·2013·The Journal of Neuroscience

Abstract

The prairie vole is a socially monogamous rodent that is an excellent animal model for studies of the neurobiology of social attachment. Such studies have demonstrated that activation of reward circuitry during social interactions facilitates pair bond formation. Within this circuitry, μ-opioid receptors (MORs) modulate naturally rewarding behavior in an anatomically segregated manner; MORs located throughout the striatum (dorsal striatum, NAc core, and the entire NAc shell) are implicated in general motivational processes, whereas those located specifically within the dorsomedial NAc shell mediate positive hedonics (and are referred to as a "hedonic hotspot"). The purpose of the present study was to determine whether MORs within these distinct subregions differentially mediate pair bond formation. We first used receptor autoradiography to compare MOR binding densities between these regions. MOR binding was significantly higher in the NAc core and dorsomedial NAc shell compared with the ventral NAc shell. We next used partner preference testing to determine whether MORs within these subregions differentially mediate pair bonding. Blockade of MORs using 1 or 3 μg of H-d-Phe-Cys-Tyr-d-Trp-Arg-Thr-Pen-Thr-NH2 within the dorsal striatum decreased mating during the cohabitation period and inhibited partner preference formation. In contrast, blockade of MORs within dorsomedial NAc shell inhibited partner preference formation without effecting mating behavior, whereas other regions were not involved. Thus, MORs within the dorsal striatum mediate partner preference formation via impairment of mating, whereas those in the dorsomedial NAc shell appear to mediate pair bond formation through the positive hedonics associated with mating.

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Authors
Resendez, S. L., Dome, M., Gormley, G., Franco, D., Nevárez, N., Hamid, A. A., & Aragona, B. J.
Affiliations
University of Michigan (US)
Venue
The Journal of Neuroscience
Published
2013-05-22
Volume
33
Issue
21
Pages
9140-9149
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2032055424
Cited by
93
References
100
Citations by year
2026: 6 · 2025: 4 · 2024: 4 · 2023: 3 · 2022: 5 · 2021: 9 · 2020: 5 · 2019: 3 · 2018: 6 · 2017: 19 · 2016: 10 · 2015: 8 · 2014: 9 · 2013: 2
FWCI
14.51
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Science Foundation (0953106)
Topics
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
Keywords
mu-opioid receptor, pair bonding, Microtus ochrogaster, social attachment, reward systems, dorsal striatum, nucleus accumbens shell, nucleus accumbens core, mate preferences, mating behavior, opioid receptor blockade, social monogamy
MeSH terms
Animals, Corpus Striatum, Arvicolinae, Dose-Response Relationship, Drug, Female, Male, Motor Activity, Narcotic Antagonists, Nucleus Accumbens, Pair Bond, Peptides, Protein Binding, Reward, Receptors, Opioid, mu

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