Evidence map›Paper›PMID 20332598›Full record

ArticleNeuroendocrinology2010

Estrogen actions on neuroendocrine glia.

Paul Micevych, Galyna Bondar, John Kuo

Open access · bronzeAbstract read
In one paragraph

Article in Neuroendocrinology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
6.5field-weighted citation impact, top 4% 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

24 citing papers in PubMed, 53 citations in OpenAlex.

  1. Effects of estradiol, tamoxifen, and raloxifene on human temporal lobe cortex astroglial cell spreading.Gynecological endocrinology : the official journal of the International Society of Gynecological Endocrinology · 2026
    Article
  2. Article
  3. Review
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  5. Article
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  7. Article
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  13. Estrogen, astrocytes and the neuroendocrine control of metabolism.Reviews in endocrine & metabolic disorders · 2013
    Review
  14. Review
  15. Neurosteroids, trigger of the LH surge.The Journal of steroid biochemistry and molecular biology · 2012
    Article
  16. Review
  17. Review
  18. Rapid estrogen signaling in the brain: implications for the fine-tuning of neuronal circuitry.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2011
    Review
  19. Article
  20. Early developmental actions of endocrine disruptors on the hypothalamus, hippocampus, and cerebral cortex.Journal of toxicology and environmental health. Part B, Critical reviews · 2011
    Review
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

3 authors at 3 institutions in 1 country.

Paul MicevychDepartment of Neurobiology, Laboratory of Neuroendocrinology, UCLA Brain Research Institute, David Geffen School of Medicine at UCLA, 10833 LeConte Avenue, Los Angeles, CA 90095-1763, USA. pmicevych @ mednet.ucla.edu
Galyna Bondar
John Kuo
Neurological Research Institute · USUCLA Health · USUniversity of California, Los Angeles · US

Funding

SEX STEROID ACTIVATION OF OPIOID CIRCUITS IN THE CNSR01DA013185 · NIDA · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI MICEVYCH, PAUL E · 2001 to 2016
$5.0M
Physiology of Hypothalamic Neurosteroidal ProgesteroneR01HD042635 · NICHD · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI MICEVYCH, PAUL E · 2003 to 2019
$4.8M
WOMEN'S REPRODUCTIVE HEALTH RESEARCH CAREER DEVELOPMENTK12HD001281 · NICHD · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI CHAUDHURI, GAUTAM · 1998 to 2008
$2.8M
NICHD NIH HHS HD001281NICHD NIH HHS HD042635NICHD NIH HHS K12 HD001281NICHD NIH HHS R01 HD042635NIDA NIH HHS DA013185NIDA NIH HHS R01 DA013185
6 · The paper itself

Abstract

Astrocytes are the most abundant cells in the central nervous system (CNS). It appears that astrocytes are as diverse as neurons, having different phenotypes in various regions throughout the brain and participating in intercellular communication that involves signaling to neurons. It is not surprising then that astrocytes in the hypothalamus have an active role in the CNS regulation of reproduction. In addition to the traditional mechanism involving ensheathment of neurons and processes, astrocytes may have a critical role in regulating estrogen-positive feedback. Work in our laboratory has focused on the relationship between circulating estradiol and progesterone synthesized de novo in the brain. We have demonstrated that circulating estradiol stimulates the synthesis of progesterone in adult hypothalamic astrocytes, and this neuroprogesterone is critical for initiating the LH surge. Estradiol cell signaling is initiated at the cell membrane and involves the transactivation of metabotropic glutamate receptor type 1a (mGluR1a) leading to the release of intracellular stores of calcium. We used surface biotinylation to demonstrate that estrogen receptor-alpha (ERalpha) is present in the cell membrane and has an extracellular portion. Like other membrane receptors, ERalpha is inserted into the membrane and removed via internalization after agonist stimulation. This trafficking is directly regulated by estradiol, which rapidly and transiently increases the levels of membrane ERalpha, and upon activation, increases internalization that finally leads to ERalpha degradation. This autoregulation temporally limits membrane-initiated estradiol cell signaling. Thus, neuroprogesterone, the necessary signal for the LH surge, is released when circulating levels of estradiol peak on proestrus and activate progesterone receptors whose expression has been induced by the gradual rise of estradiol during follicular development.

Indexed as

AnimalsAstrocytesEstradiolEstrogen Receptor alphaFemaleHumansHypothalamusModels, BiologicalProgesteroneReceptors, Metabotropic GlutamateReproductionSignal TransductionEstradiolEstrogen Receptor alphaProgesteroneReceptors, Metabotropic Glutamate

Identifiers

PMID20332598
PMCPMC2889254
OpenAlexW1970231474

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.