Evidence map›Paper›PMID 1429842›Full record

ArticleThe Journal of cell biology1992

Calcium influx into neurons can solely account for cell contact-dependent neurite outgrowth stimulated by transfected L1.

E J Williams, P Doherty, G Turner, R A Reid, J J Hemperly, F S Walsh

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of cell biology, 1992. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed, 1 pooled it
8.2field-weighted citation impact, top 2% 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

49 citing papers in PubMed, 1 synthesis or guideline pooled it, 184 citations in OpenAlex.

  1. Cell adhesion and intracellular calcium signaling in neurons.Cell communication and signaling : CCS · 2013
    Pooled it
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  19. The role of endocytic l1 trafficking in polarized adhesion and migration of nerve growth cones.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2001
    Article
  20. Recycling of the cell adhesion molecule L1 in axonal growth cones.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2000
    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

6 authors at 1 institution in 1 country.

E J WilliamsDepartment of Experimental Pathology, UMDS, Guy's Hospital, London Bridge, England.
P Doherty
G Turner
R A Reid
J J Hemperly
F S Walsh
Guy's Hospital · GB

Funding

Wellcome Trust
6 · The paper itself

Abstract

We have used monolayers of control 3T3 cells and 3T3 cells expressing transfected human L1 as a culture substrate for rat PC12 cells and rat cerebellar neurons. PC12 cells and cerebellar neurons extended longer neurites on human L1 expressing cells. Neurons isolated from the cerebellum at postnatal day 9 responded equally as well as those isolated at postnatal day 1-4, and this contrasts with the failure of these older neurons to respond to the transfected human neural cell adhesion molecule (NCAM). Human L1-dependent neurite outgrowth could be blocked by antibodies that bound to rat L1 and, additionally, the response could be fully inhibited by pertussis toxin and substantially inhibited by antagonists of L- and N-type calcium channels. Calcium influx into neurons induced by K+ depolarization fully mimics the L1 response. Furthermore, we show that L1- and K+(-)dependent neurite outgrowth can be specifically inhibited by a reduction in extracellular calcium to 0.25 microM, and by pretreatment of cerebellar neurons with the intracellular calcium chelator BAPTA/AM. In contrast, the response was not inhibited by heparin or by removal of polysialic acid from neuronal NCAM both of which substantially inhibit NCAM-dependent neurite outgrowth. These data demonstrate that whereas NCAM and L1 promote neurite outgrowth via activation of a common CAM-specific second messenger pathway in neurons, neuronal responsiveness to NCAM and L1 is not coordinately regulated via posttranslational processing of NCAM. The fact that NCAM- and L1-dependent neurite outgrowth, but not adhesion, are calcium dependent provides further evidence that adhesion per se does not directly contribute to neurite outgrowth.

Indexed as

Second Messenger Systems3T3 CellsAnimalsCalciumCalcium Channel BlockersCell Adhesion Molecules, NeuronalCell CommunicationCells, CulturedHeparinImmune SeraLeukocyte L1 Antigen ComplexMiceNerve Growth FactorsNeuritesNeuronsPC12 CellsCalciumCalcium Channel BlockersCell Adhesion Molecules, NeuronalHeparinImmune SeraLeukocyte L1 Antigen ComplexNerve Growth FactorsPertussis ToxinVirulence Factors, Bordetella

Identifiers

PMID1429842
PMCPMC2289701
OpenAlexW2097743788

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.