Cited by 999Neuroendocrine regulation and behaviorNeuropeptides and Animal PhysiologyNeurotransmitter Receptor Influence on Behavior

The oxytocin receptor: from intracellular signaling to behavior

Jurek, Benjamin, Neumann, Inga D.·2018·Physiological Reviews

Abstract

The many facets of the oxytocin (OXT) system of the brain and periphery elicited nearly 25,000 publications since 1930 (see FIGURE 1 , as listed in PubMed), which revealed central roles for OXT and its receptor (OXTR) in reproduction, and social and emotional behaviors in animal and human studies focusing on mental and physical health and disease. In this review, we discuss the mechanisms of OXT expression and release, expression and binding of the OXTR in brain and periphery, OXTR-coupled signaling cascades, and their involvement in behavioral outcomes to assemble a comprehensive picture of the central and peripheral OXT system. Traditionally known for its role in milk let-down and uterine contraction during labor, OXT also has implications in physiological, and also behavioral, aspects of reproduction, such as sexual and maternal behaviors and pair bonding, but also anxiety, trust, sociability, food intake, or even drug abuse. The many facets of OXT are, on a molecular basis, brought about by a single receptor. The OXTR, a 7-transmembrane G protein-coupled receptor capable of binding to either Gα i or Gα q proteins, activates a set of signaling cascades, such as the MAPK, PKC, PLC, or CaMK pathways, which converge on transcription factors like CREB or MEF-2. The cellular response to OXT includes regulation of neurite outgrowth, cellular viability, and increased survival. OXTergic projections in the brain represent anxiety and stress-regulating circuits connecting the paraventricular nucleus of the hypothalamus, amygdala, bed nucleus of the stria terminalis, or the medial prefrontal cortex. Which OXT-induced patterns finally alter the behavior of an animal or a human being is still poorly understood, and studying those OXTR-coupled signaling cascades is one initial step toward a better understanding of the molecular background of those behavioral effects.

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Crossref · 10.1152/physrev.00031.2017

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  • OXT exhibits temporally and spatially specific release patterns, and peripheral release can occur independently of or in parallel with central release.

    “OXT exhibits temporally and spatially specific release patterns, and peripheral release can occur independently of or in parallel with central release (Jurek and Neumann, 2018).”
  • OXT activates OXTRs, which are coupled with Gq or Gi/o proteins, resulting in diverse downstream effects.

    “OXT activates OXTRs, which are coupled with Gq or Gi/o proteins, resulting in diverse downstream effects (Jurek and Neumann, 2018).”
  • There is a bidirectional relationship between the OXTergic system and the HPA axis.

    “Furthermore, there is a bidirectional relationship between the OXTergic system and the HPA axis (Bowling, 2023; Harvey, 2020; Jurek and Neumann, 2018).”
  • OXT engages in intracellular signaling to regulate gene expression and synaptic plasticity in the amygdala, hippocampus, and prefrontal cortex to support long-term adaptations in emotional responses and social behaviors.

    “OXT engages in intracellular signaling to regulate gene expression (Jurek and Neumann, 2018; Uvnas-Moberg, 2024) and synaptic plasticity in the amygdala (Gur et al., 2014), hippocampus (Lin and Hsu, 2018), and prefrontal cortex (Ninan, 2011) to support long-term adaptations in emotional responses and social behaviors (Marlin and Froemke, 2017).”
  • In the CNS, OXT is released from dendritic or axonal terminals to specific brain regions to modulate neurotransmitter release, synaptic plasticity, and neural network activity.

    “In the CNS, OXT is released from dendritic or axonal terminals to specific brain regions to modulate neurotransmitter release, synaptic plasticity, and neural network activity (Chini et al., 2017; Jurek and Neumann, 2018).”

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Authors
Jurek, B., & Neumann, I. D.
Affiliations
University of Regensburg (DE)
Venue
Physiological Reviews
Published
2018-07-01
Volume
98
Issue
3
Pages
1805-1908
ISSN
  • 0031-9333 (ISSN-L)
  • 1522-1210
OpenAlex
W2808328764
Cited by
999
References
1,146
Citations by year
2026: 125 · 2025: 138 · 2024: 139 · 2023: 118 · 2022: 156 · 2021: 157 · 2020: 98 · 2019: 46 · 2018: 22
FWCI
12.58
Type
journal article
Language
en
Open access
closed
Locations
  • Physiological Reviews (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Deutsche Forschungsgemeinschaft (DFG) (NE 465/31-1 and JU 3039/1-1)
  • BMBF (710849)
  • EU (930742)
Topics
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
oxytocin, oxytocin receptor, G protein-coupled receptors, intracellular signaling, social behavior, anxiety, stress, reproduction, maternal behavior, pair bonding, MAPK signaling, CREB, MEF2, hypothalamic paraventricular nucleus, amygdala, bed nucleus of the stria terminalis, medial prefrontal cortex, drug abuse, dietary intake, sociability
MeSH terms
Animals, Arginine Vasopressin, Behavior, Animal, Brain, Eating, Humans, Oxytocin, Satiety Response, Behavior, Addictive, Receptors, Oxytocin, Evolution, Molecular, Calcium Signaling, MAP Kinase Signaling System

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