Evidence map›Paper›PMID 8120104›Full record

ArticleThe Journal of cell biology1994

Okadaic acid disrupts clusters of synaptic vesicles in frog motor nerve terminals.

W J Betz, A W Henkel

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of cell biology, 1994. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed
2.5field-weighted citation impact, top 9% 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

47 citing papers in PubMed, 113 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Multiple Roles of Actin in Exo- and Endocytosis.Frontiers in synaptic neuroscience · 2022
    Review
  7. Article
  8. Nanomachinery Organizing Release at Neuronal and Ribbon Synapses.International journal of molecular sciences · 2019
    Review
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Spontaneous vesicle recycling in the synaptic bouton.Frontiers in cellular neuroscience · 2014
    Review
  16. Article
  17. Article
  18. Article
  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

2 authors at 1 institution in 1 country.

W J BetzDepartment of Physiology, University of Colorado Medical School, Denver 80262.
A W Henkel
University of Colorado Denver · US

Funding

OPTICAL ANALYSIS OF SYNAPTIC VESICLE RECYCLINGR01NS023466 · NINDS · UNIVERSITY OF COLORADO DENVER · PI BETZ, WILLIAM J · 1986 to 2009
$2.8M
NERVE MUSCLE SYNAPSE FORMATIONR01NS010207 · NINDS · UNIVERSITY OF COLORADO DENVER · PI BETZ, WILLIAM J · 1985 to 1992
–
NINDS NIH HHS NS10207NINDS NIH HHS NS23466
6 · The paper itself

Abstract

The fluorophore FM1-43 appears to stain membranes of recycled synaptic vesicles. We used FM1-43 to study mechanisms of synaptic vesicle clustering and mobilization in living frog motor nerve terminals. FM1-43 staining of these terminals produces a linear series of fluorescent spots, each spot marking the cluster of several hundred synaptic vesicles at an active zone. Most agents we tested did not affect staining, but the phosphatase inhibitor okadaic acid (OA) disrupted the fluorescent spots, causing dye to spread throughout the terminal. Consistent with this, electron microscopy showed that vesicle clusters were disrupted by OA treatment. However, dye did not spread passively to a uniform spatial distribution. Instead, time lapse movies showed clear evidence of active dye movements, as if synaptic vesicles were being swept along by an active translocation mechanism. Large dye accumulations sometimes occurred at sites of Schwann cell nuclei. These effects of OA were not significantly affected by pretreatment with colchicine or cytochalasin D. Electrophysiological recordings showed that OA treatment reduced the amount of acetylcholine released in response to nerve stimulation. The results suggest that an increased level of protein phosphorylation induced by OA treatment mobilizes synaptic vesicles and unmasks a powerful vesicle translocation mechanism, which may function normally to distribute synaptic vesicles between active zones.

Indexed as

Pyridinium CompoundsQuaternary Ammonium CompoundsAnimalsCytochalasin DElectric StimulationEthers, CyclicFluorescent DyesKineticsMicroscopy, ElectronMotor NeuronsOkadaic AcidPhosphoprotein PhosphatasesRana pipiensSynaptic VesiclesTime FactorsCytochalasin DEthers, CyclicFluorescent DyesFM1 43Okadaic AcidPhosphoprotein PhosphatasesPyridinium CompoundsQuaternary Ammonium Compounds

Identifiers

PMID8120104
PMCPMC2119960
OpenAlexW2166152407

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.