Evidence map›Paper›PMID 10920039›Full record

ArticleBiophysical journal2000

Multiple-particle tracking measurements of heterogeneities in solutions of actin filaments and actin bundles.

J Apgar, Y Tseng, E Fedorov, M B Herwig, S C Almo, D Wirtz

Open access · bronzeAbstract read
In one paragraph

Article in Biophysical journal, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers.

0numbers the graph read from it
0cells of the map it votes in
58citing papers in PubMed
2.9field-weighted citation impact, top 10% 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

58 citing papers in PubMed, 216 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Particle tracking microrheology of cancer cells in living subjects.Materials today (Kidlington, England) · 2020
    Article
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  7. Review
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  14. Article
  15. Article
  16. Minimizing biases associated with tracking analysis of submicron particles in heterogeneous biological fluids.Journal of controlled release : official journal of the Controlled Release Society · 2015
    Article
  17. Article
  18. Article
  19. Article
  20. A microrheological study of hydrogel kinetics and micro-heterogeneity.The European physical journal. E, Soft matter · 2014
    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 2 institutions in 1 country.

J ApgarDepartment of Chemical Engineering, The Johns Hopkins University, Baltimore, Maryland 21218, USA.
Y Tseng
E Fedorov
M B Herwig
S C Almo
D Wirtz
Johns Hopkins University · USAlbert Einstein College of Medicine · US

Funding

NIAID NIH HHS AI44417
6 · The paper itself

Abstract

One of the central functions of actin cytoskeleton is to provide the mechanical support required for the establishment and maintenance of cell morphology. The mechanical properties of actin filament assemblies are a consequence of both the available polymer concentration and the actin regulatory proteins that direct the formation of higher order structures. By monitoring the displacement of well-dispersed microspheres via fluorescence microscopy, we probe the degree of spatial heterogeneity of F-actin gels and networks in vitro. We compare the distribution of the time-dependent mean-square displacement (MSD) of polystyrene microspheres imbedded in low- and high-concentration F-actin solutions, in the presence and absence of the F-actin-bundling protein fascin. The MSD distribution of a 2. 6-microM F-actin solution is symmetric and its standard deviation is similar to that of a homogeneous solution of glycerol of similar zero-shear viscosity. However, increasing actin concentration renders the MSD distribution wide and asymmetric, an effect enhanced by fascin. Quantitative changes in the shape of the MSD distribution correlate qualitatively with the presence of large heterogeneities in F-actin solutions produced by increased filament concentration and the presence of actin bundles, as detected by confocal microscopy. Multiple-particle tracking offers a new, quantitative method to characterize the organization of biopolymers in solution.

Indexed as

ActinsAnimalsChickensCytoskeletonMicroscopy, ConfocalMicroscopy, FluorescenceMicrospheresModels, MolecularMuscle, SkeletalProtein ConformationSolutionsActinsSolutions

Identifiers

PMID10920039
PMCPMC1301005
OpenAlexW2055551670

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.