Evidence map›Paper›PMID 19266562›Full record

ArticleThe Journal of comparative neurology2009

Birth of ophthalmic trigeminal neurons initiates early in the placodal ectoderm.

Kathryn L McCabe, John W Sechrist, Marianne Bronner-Fraser

Open access · greenAbstract read
In one paragraph

Article in The Journal of comparative neurology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.2field-weighted citation impact, top 22% 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

18 citing papers in PubMed, 35 citations in OpenAlex.

  1. Elp1 function in placode-derived neurons is critical for proper trigeminal ganglion development.Developmental dynamics : an official publication of the American Association of Anatomists · 2025
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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

3 authors at 2 institutions in 1 country.

Kathryn L McCabeDivision of Biology 139-74, California Institute of Technology, Pasadena, California 91125, USA.
John W Sechrist
Marianne Bronner-Fraser
California Institute of Technology · USZero to Three · US

Funding

Ectodermal Placode Development into Sensory StructuresR01DE016459 · NIDCR · CALIFORNIA INSTITUTE OF TECHNOLOGY · PI BRONNER, MARIANNE · 2004 to 2014
$3.8M
NIDCR NIH HHS R01 DE016459NIDCR NIH HHS R01DE16459
6 · The paper itself

Abstract

The largest of the cranial ganglia, the trigeminal ganglion, relays cutaneous sensations of the head to the central nervous system. Its sensory neurons have a dual origin from both ectodermal placodes and neural crest. Here, we show that the birth of neurons derived from the chick ophthalmic trigeminal placode begins prior to their ingression (HH11), as early as HH8, and considerably earlier than previously suspected (HH16). Furthermore, cells exiting the cell cycle shortly thereafter express the ophthalmic trigeminal placode marker Pax3 (HH9). At HH11, these postmitotic Pax3+ placode cells begin to express the pan-neuronal marker neurofilament while still in the ectoderm. Analysis of the ectodermal origin and distribution of these early postmitotic neurons reveals that the ophthalmic placode extends further rostrally than anticipated, contributing to neurons that reside in and make a significant contribution to the ophthalmic trigeminal nerve. These data redefine the timing and extent of neuron formation from the ophthalmic trigeminal placode.

Indexed as

Amino AcidsAnimalsBromodeoxyuridineCell DifferentiationChick EmbryoEctodermGene Expression Regulation, DevelopmentalNerve Tissue ProteinsNeurogenesisNeuronsPhosphoprotein PhosphatasesThymidineTrigeminal GanglionTritiumAmino AcidsBromodeoxyuridinedolaisoleucineNerve Tissue ProteinsPhosphoprotein PhosphatasesThymidineTritium

Identifiers

PMID19266562
PMCPMC2717094
OpenAlexW2061048607

What OpenQuestion holds

Textmetadata
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.