Cited by 32Neurotransmitter Receptor Influence on BehaviorNeuropeptides and Animal PhysiologyRegulation of Appetite and Obesity

Increased Ethanol Consumption and Preference in Mice Lacking Neurotensin Receptor Type 2: NEUROTENSIN RECEPTOR TYPE 2 AND ALCOHOLISM

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Lee, Moonnoh R., Hinton, David J., Unal, Sencan S., Richelson, Elliott, Choi, Doo-Sup·2011·Alcoholism: Clinical and Experimental Research

Abstract

BACKGROUND: Neurotensin receptors (NTS) regulate a variety of the biological functions of neurotensin (NT) in the central nervous system. Although NT and neurotensin receptors type 1 (NTS1) are implicated in some of the behavioral effects of ethanol, the functional roles of neurotensin receptors type 2 (NTS2) in ethanol intoxication and consumption remain unknown. Here, we investigated behavioral effects mediated by NTS2 in response to ethanol, which are implicated in ethanol consumption and preference, using NTS2 null mice. METHOD: First, we examined ethanol-induced locomotion, ataxia, hypnosis, and hypothermia in NTS2 null mice. Next, we measured ethanol consumption and preference in NTS2 null mice by giving them free choice between ethanol- and tap water-containing bottles. Then using a brain-permeable NT analog, NT69L, we examined the role of NTS2 in locomotor activity and ataxia. Finally, we examined the effect of NT69L on ethanol consumption and preference in NTS2 null mice. RESULTS: We found that NTS2 null mice appear less sensitive to the acute hypnotic effects of ethanol and consumed more ethanol compared to wild-type littermates in a 2-bottle choice experiment, even though ethanol-induced locomotion, ataxia, and hypothermia were similar between genotypes. Interestingly, the administration of NT69L for 4 consecutive days significantly reduced alcohol consumption and preference in wild-type littermates as well as in NTS2 null mice. CONCLUSIONS: Our findings suggest that NTS2 regulates ethanol-induced hypnosis and ethanol consumption.

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Authors
Lee, M. R., Hinton, D. J., Unal, S. S., Richelson, E., & Choi, D.-S.
Affiliations
Mayo Clinic (US)
Corresponding author
Choi, Doo-Sup
Venue
Alcoholism: Clinical and Experimental Research
Publisher
Wiley
Published
2010-10-06
Volume
35
Issue
1
Pages
99-107
ISSN
0145-6008 (ISSN-L)
OpenAlex
W1722439486
Cited by
32
References
60
Citations by year
2024: 2 · 2023: 6 · 2022: 1 · 2021: 2 · 2020: 3 · 2019: 4 · 2018: 2 · 2017: 2 · 2016: 3 · 2015: 1 · 2014: 3 · 2013: 3
FWCI
0.39
Type
journal article
Language
en
Open access
Locations
  • Alcoholism Clinical and Experimental Research (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute on Alcohol Abuse and Alcoholism (R01AA015164, R01AA018779, P20AA017830)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
Keywords
neurotensin, ethanol consumption, ethanol preference, ethanol intoxication, locomotor activity, ataxia, hypothermia, alcoholism
MeSH terms
Alcohol Drinking, Ethanol, Animals, Body Temperature, Male, Mice, Inbred C57BL, Motor Activity, Neurotensin, Peptide Fragments, Receptors, Neurotensin, Mice, Knockout, Mice, Taste Perception

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