Cited by 52Neurotransmitter Receptor Influence on BehaviorNeural and Behavioral Psychology StudiesEstrogen and related hormone effects

The effects of gonadal steroids on brain stimulation reward in female rats

Bless, Elizabeth P., McGinnis, Kelley A., Mitchell, Amy L., Hartwell, Amy, Mitchell, John B.·1997·Behavioural Brain Research

Abstract

The present study examined possible estrogen and/or progesterone effects on the mesolimbic dopamine (DA) system using brain stimulation reward (BSR). It is well known that BSR with electrical stimulation of the medial forebrain bundle (MFB) depends on the functioning of the mesolimbic DA system. If estrogen affects this system in a manner similar to its effects on the nigrostriatal DA system, reward measures would be expected to vary across the estrous cycle. Cycling female rats were trained to bar press for electrical stimulation to the MFB. Animals were tested at each stage of the estrous cycle, after ovariectomy and 4, 24, 48, 72 and 96 h after hormone replacement with estradiol (10 micrograms, s.c.), estradiol and progesterone (0.5 mg, s.c.), or oil (s.c.). The rewarding value of the stimulation and the maximum rate of bar pressing increased during estrus, but not during proestrus or metestrus, as compared with diestrus. Hormone replacement had differing effects on reward and motor performance. Motor performance increased 4 and 24 h after estrogen alone and 24 h after estrogen with the addition of progesterone 4 h before testing. The rewarding value of the stimulation increased only 24 h after estrogen together with an injection of progesterone 4 h before testing. These results indicate that gonadal steroids affect the functioning of the mesolimbic DA system.

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Crossref · 10.1016/s0166-4328(96)00129-5

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  • Testosterone and/or estradiol administration increases conditioned place preference, lever pressing for drug and saccharin, and reward-related brain stimulation in animals.

    “administrations of testosterone and/or estradiol have been tied to increased conditioned place preference (Alexander, Packard, & Hines, 1994), lever pressing for drug and saccharin administration (Clark, Lindenfield, & Gibbons, 1996; Miele, Rosellin, & Svare, 1988), and reward-related brain stimulation (Bless et al., 1997).”

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Authors
Bless, E. P., McGinnis, K. A., Mitchell, A. L., Hartwell, A., & Mitchell, J. B.
Affiliations
Boston College (US)
Corresponding author
  • Bless, Elizabeth P.
  • Mitchell, John B.
Venue
Behavioural Brain Research
Publisher
Elsevier BV
Published
1997-01
Volume
82
Issue
2
Pages
235-244
ISSN
0166-4328 (ISSN-L)
OpenAlex
W2170549725
Cited by
52
References
52
Citations by year
2026: 1 · 2025: 1 · 2024: 3 · 2023: 2 · 2021: 1 · 2020: 1 · 2019: 1 · 2018: 2 · 2017: 2 · 2016: 2 · 2015: 2 · 2013: 4 · 2012: 1
FWCI
0.92
Type
journal article
Language
en
Open access
closed
Locations
  • Behavioural Brain Research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
Keywords
sex steroids, estrogen, progesterone, brain stimulation reward, mesolimbic dopamine system, medial forebrain bundle, estrous cycle, estradiol replacement, ovariectomy, female rats, motor performance
MeSH terms
Animals, Brain, Conditioning, Operant, Dopamine, Estrogens, Estrus, Female, Medial Forebrain Bundle, Ovariectomy, Progesterone, Reward, Self Stimulation, Rats

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