Evidence map›Paper›PMID 9334420›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience1997

Nerve growth factor treatment increases brain-derived neurotrophic factor selectively in TrkA-expressing dorsal root ganglion cells and in their central terminations within the spinal cord.

G J Michael, S Averill, A Nitkunan, M Rattray, D L Bennett, Q Yan, J V Priestley

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 1997. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 154 papers.

0numbers the graph read from it
0cells of the map it votes in
154citing papers in PubMed
8.9field-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

154 citing papers in PubMed, 506 citations in OpenAlex.

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94 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

7 authors at 3 institutions in 2 countries.

G J MichaelDepartment of Anatomy, Faculty of Basic Medical Sciences, Queen Mary and Westfield College, London 31 4NS, United Kingdom.
S Averill
A Nitkunan
M Rattray
D L Bennett
Q Yan
J V Priestley
Queen Mary University of London · GBAmgen (United States) · USSt Thomas' Hospital · GB

Funding

Wellcome Trust
6 · The paper itself

Abstract

Using immunocytochemistry and in situ hybridization, we have examined the expression of brain-derived neurotrophic factor (BDNF) and of neurotrophin receptors in dorsal root ganglion cells. In the adult rat, BDNF mRNA and protein were found mainly in the subpopulation of cells that express the nerve growth factor (NGF) receptor trkA and the neuropeptide calcitonin gene-related peptide (CGRP). NGF increased BDNF within the trkA/CGRP cells to the extent that almost 90% of trkA cells contained BDNF mRNA after intrathecal NGF treatment, and 80-90% of BDNF-expressing cells contained trkA. Non-trkA cells that expressed BDNF included some trkC cells and some small cells that labeled with the lectin Griffonia simplicifolia IB4, a marker for cells that do not express trks. However, very few trkB cells expressed either BDNF mRNA or protein, and NGF did not increase BDNF expression in non-trkA cells. BDNF protein was anterogradely transported both peripherally and centrally. The central transport resulted in BDNF immunoreactivity in CGRP containing terminal arbors in the dorsal horn of the spinal cord, and this immunoreactivity was increased by NGF treatment. Electron microscopic analysis revealed that the BDNF immunoreactivity was present in finely myelinated and unmyelinated axons and in axon terminals, where it was most concentrated over dense-cored vesicles. Our data do not support an autocrine or paracrine role for BDNF within normal dorsal root ganglia, but indicate that BDNF may act as an anterograde trophic messenger. NGF levels in the periphery could influence dorsal horn neurons via release of BDNF from primary afferents.

Indexed as

Afferent PathwaysAnimalsAxonal TransportBrain-Derived Neurotrophic FactorCalcitonin Gene-Related PeptideFluorescent Antibody Technique, IndirectGanglia, SpinalGene Expression RegulationInjections, IntraperitonealInjections, SpinalIn Situ Hybridization, FluorescenceMaleMicroscopy, ElectronNerve Growth FactorsNerve Tissue ProteinsProto-Oncogene ProteinsBrain-Derived Neurotrophic FactorCalcitonin Gene-Related PeptideNerve Growth FactorsNerve Tissue ProteinsProto-Oncogene ProteinsReceptor, Ciliary Neurotrophic FactorReceptor Protein-Tyrosine KinasesReceptors, Nerve Growth FactorReceptor, trkAReceptor, trkCRNA, Messenger

Identifiers

PMID9334420
PMCPMC6573719
OpenAlexW1914763441

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.