Evidence map›Paper›PMID 19443569›Full record

ArticleEndocrinology2009

Circadian regulation of Kiss1 neurons: implications for timing the preovulatory gonadotropin-releasing hormone/luteinizing hormone surge.

Jessica L Robertson, Donald K Clifton, Horacio O de la Iglesia, Robert A Steiner, Alexander S Kauffman

Abstract read
In one paragraph

Article in Endocrinology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 111 papers.

0numbers the graph read from it
0cells of the map it votes in
111citing papers in PubMed
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

111 citing papers in PubMed, 181 citations in OpenAlex.

  1. Article
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  7. Review
  8. Article
  9. Shifting GnRH Neuron Ensembles Underlie Successive Preovulatory Luteinizing Hormone Surges.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  10. Article
  11. Review
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  16. Article
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51 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

5 authors at 2 institutions in 1 country.

Jessica L RobertsonDepartments of Biology, University of Washington, Seattle, Washington 98195, USA.
Donald K Clifton
Horacio O de la Iglesia
Robert A Steiner
Alexander S Kauffman
University of Washington · USUniversity of California, San Diego · US

Funding

THE MAMMALIAN REPRODUCTIVE GENETIC DATABASEU54HD012629 · NICHD · UNIVERSITY OF WASHINGTON · PI BRAUN, ROBERT E · 1998 to 2011
$19.1M
PROJECT 3 - Steroid-Metabolic Interactions In the Control of GnRH NeuronsU54HD028934 · NICHD · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI MCCARTNEY, CHRISTOPHER ROLLAND · 1998 to 2013
$16.5M
BRAIN GENES GOVERNING REPRODUCTIONR01HD027142 · NICHD · UNIVERSITY OF WASHINGTON · PI STEINER, ROBERT A · 1993 to 2005
$1.0M
Forced Desynchronization of the Rat Circadian SystemR01MH075016 · NIMH · UNIVERSITY OF WASHINGTON · PI DE LA IGLESIA, HORACIO O · 2006 to 2009
$956k
Role of Kiss1 neurons in the seasonal and circadian control of reproductionR00HD056157 · NICHD · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI KAUFFMAN, ALEXANDER S · 2009 to 2011
$845k
Role of Kiss1 neurons in the seasonal and circadian control of reproductionK99HD056157 · NICHD · UNIVERSITY OF WASHINGTON · PI KAUFFMAN, ALEXANDER S · 2007 to 2008
$126k
NICHD NIH HHS K99 HD056157NICHD NIH HHS K99/R00 HD056157NICHD NIH HHS R00 HD056157NICHD NIH HHS R01 HD027142NICHD NIH HHS R01 HD27142NICHD NIH HHS U54 HD012629NICHD NIH HHS U54 HD028934NICHD NIH HHS U54 HD12629NICHD NIH HHS U54 HD28934NIMH NIH HHS R01 MH075016
6 · The paper itself

Abstract

The preovulatory GnRH/LH surge depends on the presence of estradiol (E(2)) and is gated by a circadian oscillator in the suprachiasmatic nucleus (SCN) that causes the surge to occur within a specific temporal window. Although the mechanisms by which the clock times the LH surge are unclear, evidence suggests that the SCN is linked to GnRH neurons through a multisynaptic pathway that includes neurons in the anteroventral periventricular nucleus (AVPV). Recently, Kiss1 neurons in the AVPV have been implicated in the surge mechanism, suggesting that they may integrate circadian and E(2) signals to generate the LH surge. We tested whether Kiss1 neurons display circadian patterns of regulation in synchrony with the temporal pattern of LH secretion. Mice housed in 14 h light, 10 h dark were ovariectomized, given E(2) capsules (or nothing), and transferred into constant darkness. Two days later, the mice were killed at various times of day and their LH and Kiss1 levels assessed. In E(2)-treated females, LH levels were low except during late subjective day (indicative of an LH surge). Similarly, AVPV Kiss1 expression and c-fos coexpression in Kiss1 neurons showed circadian patterns that peaked coincident with LH. These temporal changes in Kiss1 neurons occurred under steady-state E(2) and constant environmental conditions, suggesting that Kiss1 neurons are regulated by circadian signals. In the absence of E(2), animals displayed no circadian pattern in LH secretion or Kiss1 expression. Collectively, these findings suggest that the LH surge is controlled by AVPV Kiss1 neurons whose activity is gated by SCN signals in an E(2)-dependent manner.

Indexed as

AnimalsCircadian RhythmEstradiolEstrogensFemaleGene Expression RegulationGonadotropin-Releasing HormoneIn Situ HybridizationKisspeptinsLuteinizing HormoneMiceMice, Inbred C57BLNeuronsOvariectomyProteinsSuprachiasmatic NucleusEstradiolEstrogensGonadotropin-Releasing HormoneKiss1 protein, mouseKisspeptinsLuteinizing HormoneProteins

Identifiers

PMID19443569
PMCPMC2717859
OpenAlexW2071810743

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.