Evidence map›Paper›PMID 12770915›Full record

ArticleBiophysical journal2003

Unexpected mobility variation among individual secretory vesicles produces an apparent refractory neuropeptide pool.

Yuen-Keng Ng, Xinghua Lu, Alexandra Gulacsi, Weiping Han, Michael J Saxton, Edwin S Levitan

Open access · bronzeAbstract readComparative StudyEvaluation StudyValidation Study
In one paragraph

Article in Biophysical journal, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.3field-weighted citation impact, top 23% 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

13 citing papers in PubMed, 24 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Review
  6. Increased motion and travel, rather than stable docking, characterize the last moments before secretory granule fusion.Proceedings of the National Academy of Sciences of the United States of America · 2007
    Article
  7. Presynaptic ryanodine receptor-activated calmodulin kinase II increases vesicle mobility and potentiates neuropeptide release.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2007
    Article
  8. Primed vesicles can be distinguished from docked vesicles by analyzing their mobility.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2007
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
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 2 institutions in 1 country.

Yuen-Keng NgDepartment of Pharmacology, E1351 Biomedical Science Tower, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, USA.
Xinghua Lu
Alexandra Gulacsi
Weiping Han
Michael J Saxton
Edwin S Levitan
University of Pittsburgh · USUniversity of California, Davis · US

Funding

Dense-Core Vesicle Circulation, Capture and Synaptic Neuropeptide ReleaseR01NS032385 · NINDS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI EDWIN S LEVITAN · 1995 to 2026
$13.0M
LATERAL DIFFUSION IN AN ARCHIPELAGO: MONTE CARLO STUDIESR01GM038133 · NIGMS · UNIVERSITY OF CALIFORNIA DAVIS · PI SAXTON, MICHAEL J. · 1988 to 2011
$1.9M
NIGMS NIH HHS GM38133NIGMS NIH HHS R01 GM038133NINDS NIH HHS NS32385NINDS NIH HHS R01 NS032385
6 · The paper itself

Abstract

Most stored neuropeptide cannot be released from nerve terminals suggesting the existence of a refractory pool of dense core vesicles (DCVs). Past fluorescence photobleaching recovery, single particle tracking and release experiments suggested that the refractory neuropeptide pool corresponds to a distinct immobile fraction of cytoplasmic DCVs. However, tracking of hundreds of individual green fluorescent protein-labeled neuropeptidergic vesicles by wide-field or evanescent-wave microscopy shows that a separate immobile fraction is not evident. Instead, the DCV diffusion coefficient (D) distribution is unusually broad and asymmetric. Furthermore, the distribution shifts with a release facilitator. This unexpected variation, which could reflect heterogeneity among vesicles or in their medium, is shown to generate the appearance of a regulated refractory neuropeptide pool.

Indexed as

Models, BiologicalAnimalsCell MovementComputer SimulationDiffusionMicroscopy, FluorescenceNerve Growth FactorsNeuropeptidesPC12 CellsProtein TransportRatsReproducibility of ResultsSecretory VesiclesSensitivity and SpecificityNerve Growth FactorsNeuropeptides

Identifiers

PMID12770915
PMCPMC1302991
OpenAlexW2000049837

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.