Evidence map›Paper›PMID 1645735›Full record

ArticleThe Journal of cell biology1991

Cortical filamentous actin disassembly and scinderin redistribution during chromaffin cell stimulation precede exocytosis, a phenomenon not exhibited by gelsolin.

M L Vitale, A Rodríguez Del Castillo, L Tchakarov, J M Trifaró

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In one paragraph

Article in The Journal of cell biology, 1991. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed
4.0field-weighted citation impact, top 5% 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

62 citing papers in PubMed, 219 citations in OpenAlex.

  1. Assays of Platelet SNARE-actin Interactions.Methods in molecular biology (Clifton, N.J.) · 2025
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  12. Adseverin knockdown inhibits osteoclastogenesis in RAW264.7 cells.International journal of molecular medicine · 2014
    Article
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  14. Secretagogue stimulation of neurosecretory cells elicits filopodial extensions uncovering new functional release sites.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2013
    Article
  15. Review
  16. Review
  17. Multiple roles for the actin cytoskeleton during regulated exocytosis.Cellular and molecular life sciences : CMLS · 2013
    Review
  18. Article
  19. Article
  20. Article

2 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

4 authors at 1 institution in 1 country.

M L VitaleDepartment of Pharmacology, Faculty of Medicine, University of Ottawa, Ontario, Canada.
A Rodríguez Del Castillo
L Tchakarov
J M Trifaró
University of Ottawa · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Immunofluorescence and cytochemical studies have demonstrated that filamentous actin is mainly localized in the cortical surface of the chromaffin cell. It has been suggested that these actin filament networks act as a barrier to the secretory granules, impeding their contact with the plasma membrane. Stimulation of chromaffin cells produces a disassembly of actin filament networks, implying the removal of the barrier. The presence of gelsolin and scinderin, two Ca(2+)-dependent actin filament severing proteins, in the cortical surface of the chromaffin cells, suggests the possibility that cell stimulation brings about activation of one or more actin filament severing proteins with the consequent disruption of actin networks. Therefore, biochemical studies and fluorescence microscopy experiments with scinderin and gelsolin antibodies and rhodamine-phalloidin, a probe for filamentous actin, were performed in cultured chromaffin cells to study the distribution of scinderin, gelsolin, and filamentous actin during cell stimulation and to correlate the possible changes with catecholamine secretion. Here we report that during nicotinic stimulation or K(+)-evoked depolarization, subcortical scinderin but not gelsolin is redistributed and that this redistribution precedes catecholamine secretion. The rearrangement of scinderin in patches is mediated by nicotinic receptors. Cell stimulation produces similar patterns of distribution of scinderin and filamentous actin. However, after the removal of the stimulus, the recovery of scinderin cortical pattern of distribution is faster than F-actin reassembly, suggesting that scinderin is bound in the cortical region of the cell to a component other than F-actin. We also demonstrate that peripheral actin filament disassembly and subplasmalemmal scinderin redistribution are calcium-dependent events. Moreover, experiments with an antibody against dopamine-beta-hydroxylase suggest that exocytosis sites are preferentially localized to areas of F-actin disassembly.

Indexed as

ExocytosisActinsAdrenal MedullaAnimalsCalcium-Binding ProteinsCattleCells, CulturedCytoskeletal ProteinsGelsolinImmune SeraImmunoassayKineticsMicrofilament ProteinsMicroscopy, FluorescenceMolecular WeightMuscarineActinsCalcium-Binding ProteinsCytoskeletal ProteinsGelsolinImmune SeraMicrofilament ProteinsMuscarineNicotineNorepinephrinescinderinTubocurarine

Identifiers

PMID1645735
PMCPMC2289017
OpenAlexW2133229697

What OpenQuestion holds

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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.