Evidence map›Paper›PMID 19342492›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2009

The melanin-concentrating hormone system modulates cocaine reward.

Shinjae Chung, F Woodward Hopf, Hiroshi Nagasaki, Chun-Ying Li, James D Belluzzi, Antonello Bonci, Olivier Civelli

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 81 papers.

0numbers the graph read from it
0cells of the map it votes in
81citing papers in PubMed
5.8field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

81 citing papers in PubMed, 149 citations in OpenAlex.

  1. Modulation of accumbens dopamine by MCH neurons during learning and consummatory behavior.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
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21 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 4 institutions in 2 countries.

Shinjae ChungDepartment of Pharmacology, University of California, Irvine, CA 92697, USA.
F Woodward Hopf
Hiroshi Nagasaki
Chun-Ying Li
James D Belluzzi
Antonello Bonci
Olivier Civelli
University of California, Irvine · USErnest Gallo Clinic and Research Center · USNagoya University · JPUniversity of California, San Francisco · US

Funding

CHARACTERIZATION OF TWO NOVEL NEUROPEPTIDESR01MH060231 · NIMH · UNIVERSITY OF CALIFORNIA-IRVINE · PI CIVELLI, OLIVIER · 1999 to 2008
$2.7M
Novel Glycoprotein Hormone-Like proteinsR01DK063001 · NIDDK · UNIVERSITY OF CALIFORNIA-IRVINE · PI CIVELLI, OLIVIER · 2003 to 2006
$1.2M
NIDDK NIH HHS DK63001NIDDK NIH HHS R01 DK063001NIMH NIH HHS MH60231NIMH NIH HHS R01 MH060231
6 · The paper itself

Abstract

Drug addiction is mediated by complex neuronal processes that converge on the shell of the nucleus accumbens (NAcSh). The NAcSh receives inputs from the lateral hypothalamus (LH), where self-stimulation can be induced. Melanin-concentrating hormone (MCH) is produced mainly in the LH, and its receptor (MCH1R) is highly expressed in the NAcSh. We found that, in the NAcSh, MCH1R is coexpressed with dopamine receptors (D1R and D2R), and that MCH increases spike firing when both D1R and D2R are activated. Also, injecting MCH potentiates cocaine-induced hyperactivity in mice. Mice lacking MCH1R exhibit decreased cocaine-induced conditioned place preference, as well as cocaine sensitization. Using a specific MCH1R antagonist, we further show that acute blockade of the MCH system not only reduces cocaine self-administration, but also attenuates cue- and cocaine-induced reinstatement. Thus, the MCH system has an important modulatory role in cocaine reward and reinforcement by potentiating the dopaminergic system in the NAcSh, which may provide a new rationale for treating cocaine addiction.

Indexed as

RewardAnimalsBehaviorCocaineCuesDopamineHypothalamic HormonesMaleMelaninsMiceMice, Inbred C57BLMice, KnockoutMotor ActivityNucleus AccumbensPituitary HormonesProtein TransportCocaineDopamineHypothalamic HormonesMchr1 protein, mousemelanin-concentrating hormoneMelaninsPituitary HormonesReceptors, Dopamine D1Receptors, Dopamine D2Receptors, Somatostatin

Identifiers

PMID19342492
PMCPMC2672513
OpenAlexW2020433910

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.