Oxytocin increases locus coeruleus alpha 2-adrenoreceptor responsiveness in rats
Abstract
Oxytocin induces several antistress-like effects in rats. As the central noradrenergic nucleus locus coeruleus (LC) participates in arousal reactions and cardiovascular control, we used extracellular single-cell recording techniques to investigate a potential influence of oxytocin on LC neuronal activity. Oxytocin (1 mg/kg s.c.) given once a day for 5 days to male rats, increased the responsiveness of noradrenergic LC neurons to intravenous (i.v.) administration of clonidine, when compared to controls treated with saline for 5 days (P < 0.01). The spontaneous firing rate was not affected by oxytocin treatment. This study indicates that oxytocin treatment increases the responsiveness of LC alpha 2-adrenoreceptors.
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The LC contains oxytocin receptors.
“The LC also contains oxytocin receptors (Petersson et al., 1998).”
From Oxytocin enhances pupil dilation and sensitivity to 'hidden' emotional expressions (2013) · cites this paper as Petersson et al., 1998
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- Authors
- Petersson, M., Uvnäs-Moberg, K., Erhardt, S., & Engberg, G.
- Affiliations
- Karolinska University Hospital (SE)
- Karolinska Institutet (SE)
- Corresponding author
- Uvnäs-Moberg, Kerstin
- Venue
- Neuroscience Letters
- Publisher
- Elsevier BV
- Published
- 1998-09
- Volume
- 255
- Issue
- 2
- Pages
- 115-118
- ISSN
- 0304-3940 (ISSN-L)
- OpenAlex
- W2074465550
- Cited by
- 71
- References
- 20
- Citations by year
- 2026: 1 · 2025: 1 · 2024: 3 · 2022: 6 · 2021: 4 · 2020: 6 · 2019: 3 · 2018: 3 · 2017: 1 · 2016: 2 · 2015: 4 · 2014: 2 · 2013: 2 · 2012: 3
- FWCI
- 5.53
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Neuroscience Letters (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
- Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
- Keywords
- oxytocin, locus coeruleus, alpha2-adrenoceptors, noradrenergic neurons, clonidine, neuronal responsiveness, anti-stress effects, arousal, spontaneous firing rate
- MeSH terms
- Adrenergic alpha-Agonists, Animals, Clonidine, Drug Synergism, Injections, Intravenous, Locus Coeruleus, Male, Neurons, Oxytocin, Receptors, Adrenergic, alpha, Rats, Sprague-Dawley, Rats
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