Evidence map›Paper›PMID 19357131›Full record

ArticleReproduction (Cambridge, England)2009

NTRK1 and NTRK2 receptors facilitate follicle assembly and early follicular development in the mouse ovary.

Bredford Kerr, Cecilia Garcia-Rudaz, Mauricio Dorfman, Alfonso Paredes, Sergio R Ojeda

Open access · bronzeAbstract read
In one paragraph

Article in Reproduction (Cambridge, England), 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 1 pooled it
4.3field-weighted citation impact, top 6% 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

40 citing papers in PubMed, 1 synthesis or guideline pooled it, 82 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Review
  8. Neurotrophin-4 promotesHuman reproduction open · 2024
    Article
  9. Article
  10. Article
  11. Review
  12. Review
  13. Article
  14. Article
  15. Shuttle Transfer of mRNA TranscriptsFrontiers in veterinary science · 2022
    Article
  16. Review
  17. Article
  18. The Crazy Ovary.Genes · 2021
    Review
  19. Article
  20. Article
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 3 institutions in 2 countries.

Bredford KerrDivision of Neuroscience, Oregon National Primate Research Center/Oregon Health and Science University, 505 Northwest 185th Avenue, Beaverton, Oregon 97006, USA.
Cecilia Garcia-Rudaz
Mauricio Dorfman
Alfonso Paredes
Sergio R Ojeda
Oregon Health & Science University · USOregon National Primate Research Center · USUniversity of Chile · CL

Funding

YR 50 PROJ- ROBERTS PRIMATE ISLETP51RR000163 · NCRR · OREGON REGIONAL PRIMATE RESEARCH CENTER · PI FRUH, KLAUS J · 1985 to 2011
$140.8M
VASOACTIVE FACTORS IN ART CYCLES AND OVARIAN HYPERSTIMULATION SYNDROMEU54HD018185 · NICHD · OREGON REGIONAL PRIMATE RESEARCH CENTER · PI BETHEA, CYNTHIA LOUISE · 1999 to 2010
$13.8M
NEURAL CONTROL OF THE PREPUBERTAL OVARYR01HD024870 · NICHD · OREGON REGIONAL PRIMATE RESEARCH CENTER · PI OJEDA, SERGIO R · 1988 to 2011
$4.1M
INTERNATIONAL TRAINING &RESEARCH IN POPULATION &HEALTHD43TW000668 · FIC · OREGON REGIONAL PRIMATE RESEARCH CENTER · PI CONN, P. MICHAEL · 1995 to 2010
$2.1M
REPRODUCTIVE STEROIDS AND EXPERIMENTAL STROKEK01RR000163 · NCRR · OREGON HEALTH AND SCIENCE UNIVERSITY · PI MURPHY, STEPHANIE J · 2000 to 2004
$479k
REPRODUCTIVE BIOLOGY IN PRIMATES: CENTER FACILITIESP30HD018185 · NICHD · OREGON REGIONAL PRIMATE RESEARCH CENTER · PI SPIES, HAROLD G · 1985 to 1998
–
FIC NIH HHS D43 TW000668NCRR NIH HHS K01 RR000163NCRR NIH HHS P51 RR000163NICHD NIH HHS HD00668NICHD NIH HHS HD18185NICHD NIH HHS HD24870NICHD NIH HHS P30 HD018185NICHD NIH HHS R01 HD024870NICHD NIH HHS U54 HD018185
6 · The paper itself

Abstract

Recent studies have demonstrated that neurotrophins (NTs) and their NTRK tyrosine kinase receptors, thought to be exclusively required for the development of the nervous system, are also involved in controlling ovarian development. Here, we show that primordial follicle formation is decreased in the absence of nerve growth factor (NGF) or its receptor NTRK1, and in the absence of NTRK2, the receptor for neurotrophin-4 (NTF4) and brain-derived neurotrophic factor (BDNF). This deficiency is not due to premature oocyte loss, because the ovaries of Ntrk1(-/-) and Ntrk2(-/-) mice do not show an increased rate of oocyte death antedating the initiation of folliculogenesis. Moreover, exposure of NGF-deficient ovaries to NGF rescues the defect in follicular assembly, if NTRK1 receptors are present, suggesting that the absence of NTs causes a delay, and not an irretrievable loss, of follicle formation. Both the number of secondary follicles and FSH receptor (FSHR) expression are diminished in Ntrk1- and Ntrk2-null ovaries, but not in ovaries lacking the common NT receptor NGFR. Transient exposure of wild-type ovaries to NTF4 increases Fshr gene expression and enhances the ability of the ovary to respond to FSH with formation of cyclin D2, a cell cycle protein mediating the proliferative actions of FSH in the ovary. These results indicate that both NTRK1 and NTRK2 receptors are necessary for the timely assembly of primordial follicles and for sustaining early follicular development. They also suggest that a mechanism by which NTRK2 receptors facilitate subsequent follicle development is by inducing the formation of functional FSHR.

Indexed as

AnimalsAnimals, NewbornApoptosisCyclin D2FemaleFollicle Stimulating HormoneMembrane GlycoproteinsMiceMice, 129 StrainMice, Inbred C57BLMice, KnockoutNerve Growth FactorNerve Growth FactorsOocytesOvarian FollicleOvaryCcnd2 protein, mouseCyclin D2Follicle Stimulating HormoneMembrane GlycoproteinsNerve Growth FactorNerve Growth Factorsneurotrophin 4Ntrk2 protein, mouseProtein-Tyrosine KinasesReceptors, FSHReceptor, trkAReceptor, trkB

Identifiers

PMID19357131
PMCPMC3150184
OpenAlexW2167387574

What OpenQuestion holds

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LicenceTDM
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.