Evidence map›Paper›PMID 19805188›Full record

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

Melanin-concentrating hormone directly inhibits GnRH neurons and blocks kisspeptin activation, linking energy balance to reproduction.

Min Wu, Iryna Dumalska, Elena Morozova, Anthony van den Pol, Meenakshi Alreja

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 48 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed, 2 pooled it
14.0field-weighted citation impact, top 1% 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

48 citing papers in PubMed, 2 syntheses or guidelines pooled it, 120 citations in OpenAlex.

  1. Kisspeptins in human reproduction-future therapeutic potential.Journal of assisted reproduction and genetics · 2012
    Pooled it
  2. Pooled it
  3. Accumulated deep sleep is a powerful predictor of LH pulse onset in pubertal children.The Journal of clinical endocrinology and metabolism · 2015
    Trial
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  15. Melanin-concentrating hormone neurons release glutamate for feedforward inhibition of the lateral septum.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2015
    Article
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  17. Review
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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

5 authors at 2 institutions in 1 country.

Min WuDepartment of Psychiatry, Yale University School of Medicine and the Ribicoff Research Facilities, Connecticut Mental Health Center, New Haven, CT 06508, USA.
Iryna Dumalska
Elena Morozova
Anthony van den Pol
Meenakshi Alreja
Connecticut Mental Health Center · USSalk Institute for Biological Studies · US

Funding

Response properties of hypothalamic MCH neuronsR01NS048476 · NINDS · YALE UNIVERSITY · PI VAN DEN POL, ANTHONY N · 2005 to 2014
$3.7M
Hypocretin NeuronsR01NS041454 · NINDS · YALE UNIVERSITY · PI VAN DEN POL, ANTHONY N · 2002 to 2010
$2.9M
CHOLINERGIC &GABAERGIC MECHANISM SEPTOHIPPOCAMPAL PATHWAYR01MH061465 · NIMH · YALE UNIVERSITY · PI ALREJA, MEENAKSHI · 2001 to 2010
$2.4M
NIMH NIH HHS MH61465NIMH NIH HHS R01 MH061465NINDS NIH HHS NS41454NINDS NIH HHS NS48476NINDS NIH HHS R01 NS041454NINDS NIH HHS R01 NS048476
6 · The paper itself

Abstract

A link between energy balance and reproduction is critical for the survival of all species. Energy-consuming reproductive processes need to be aborted in the face of a negative energy balance, yet knowledge of the pathways mediating this link remains limited. Fasting and food restriction that inhibit fertility also upregulate the hypothalamic melanin-concentrating hormone (MCH) system that promotes feeding and decreases energy expenditure; MCH knockout mice are lean and have a higher metabolism but remain fertile. MCH also modulates sleep, drug abuse behavior, and mood, and MCH receptor antagonists are currently being developed as antiobesity and antidepressant drugs. Despite the clinical implications of MCH, the direct postsynaptic effects of MCH have never been reported in CNS neurons. Using patch-clamp recordings in brain slices from multiple lines of transgenic GFP mice, we demonstrate a strong inhibitory effect of MCH on an exclusive population of septal vGluT2-GnRH neurons that is activated by the puberty-triggering and preovulatory luteinizing hormone surge-mediating peptide, kisspeptin. MCH has no effect on kisspeptin-insensitive GnRH, vGluT2, cholinergic, or GABAergic neurons located within the same nucleus. The inhibitory effects of MCH are reproducible and nondesensitizing and are mediated via a direct postsynaptic Ba(2+)-sensitive K(+) channel mechanism involving the MCHR1 receptor. MCH immunoreactive fibers are in close proximity to vGluT2-GFP and GnRH-GFP neurons. Importantly, MCH blocks the excitatory effect of kisspeptin on vGluT2-GnRH neurons. Considering the role of MCH in regulating energy balance and of GnRH and kisspeptin in triggering puberty and maintaining fertility, MCH may provide a critical link between energy balance and reproduction directly at the level of the kisspeptin-activated vGluT2-GnRH neuron.

Indexed as

AnimalsBrainEnergy MetabolismFemaleGonadotropin-Releasing HormoneGreen Fluorescent ProteinsHypothalamic HormonesImmunohistochemistryKisspeptinsMaleMelaninsMembrane PotentialsMiceMice, TransgenicMicroscopy, FluorescenceNeuronsGonadotropin-Releasing HormoneGreen Fluorescent ProteinsHypothalamic HormonesKiss1 protein, mouseKisspeptinsMchr1 protein, mousemelanin-concentrating hormoneMelaninsPeptide FragmentsPituitary HormonesReceptors, SomatostatinSlc17a6 protein, mouseTumor Suppressor ProteinsVesicular Glutamate Transport Protein 2

Identifiers

PMID19805188
PMCPMC2761345
OpenAlexW2035780360

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.