Cited by 322Neuroendocrine regulation and behaviorNeuropeptides and Animal PhysiologyHypothalamic control of reproductive hormones

Possible Role for Endogenous Oxytocin in Estrogen-Facilitated Maternal Behavior in Rats

Fahrbach, Susan E., Morrell, Joan I., Pfaff, Donald W.·2008·Neuroendocrinology

Abstract

Intracerebroventricular (i.c.v.) infusions of oxytocin (OXY) induce short-latency maternal behavior in estrogen-primed virgin rats. To investigate if brain OXY might have a role in the onset of maternal behavior at parturition, we have used both antisera to OXY and an analog antagonist of OXY, d(CH2)5–8-ornithine-vasotocin, to reduce the activity of endogenous OXY in a pregnancy-terminated preparation which yields reliable short-latency maternal behavior. Sprague-Dawley rats with lateral ventricle cannulae were ovariectomized and hysterectomized on day 16 of gestation; maternal behavior was stimulated by a s.c. injection of estradiol benzoate (EB). Effects of the i.c.v. infusion of antisera to OXY or of the i.c.v. infusion of d(CH2)5–8-ornithine-vasotocin on the latency to respond to pups were tested by presenting pups 48 h after surgery and EB treatment. Behavioral observations were made for the next 5 h and periodically over the next 5 days. Groups receiving either the antisera to OXY or the analog antagonist had significantly longer latencies to respond to pups than did control groups. In a separate experiment, i.c.v. infusion of d(CH2)5–8-ornithine-vasotocin was shown to have no effect on the performance of maternal behavior in lactating rats 5 days postpartum. These results suggest that OXY may have a role in promoting short-latency maternal behavior in steroid-primed female rats, but that it is probably not involved in sustaining this behavior during lactation.

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Crossref · 10.1159/000124125

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Authors
Fahrbach, S. E., Morrell, J. I., & Pfaff, D. W.
Affiliations
Rockefeller University (US)
Venue
Neuroendocrinology
Publisher
S. Karger AG
Published
2008-03-28
Volume
40
Issue
6
Pages
526-532
ISSN
  • 0028-3835 (ISSN-L)
  • 1423-0194
OpenAlex
W1965235291
Cited by
322
References
0
Citations by year
2026: 1 · 2025: 1 · 2024: 3 · 2023: 3 · 2022: 5 · 2021: 7 · 2020: 19 · 2019: 6 · 2018: 8 · 2017: 12 · 2016: 7 · 2015: 6 · 2014: 13 · 2013: 6 · 2012: 8
FWCI
14.67
Type
journal article
Language
en
Open access
closed
Locations
  • Neuroendocrinology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
Keywords
oxytocin, maternal behavior, estrogen, estradiol benzoate, arginine vasotocin, oxytocin antagonist, abortion (veterinary), childbirth, lactation, postpartum behavior, intracerebroventricular infusion
MeSH terms
Animals, Estradiol, Female, Immune Sera, Lactation, Maternal Behavior, Oxytocin, Pregnancy, Rats, Inbred Strains, Time Factors, Rats

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