Evidence map›Paper›PMID 1912279›Full record

ArticleBiophysical journal1991

Spatial Fourier analysis of video photobleaching measurements. Principles and optimization.

T T Tsay, K A Jacobson

Open access · bronzeAbstract read
In one paragraph

Article in Biophysical journal, 1991. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
2.4field-weighted citation impact, top 12% 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

45 citing papers in PubMed, 88 citations in OpenAlex.

  1. Human mesenchymal stem/stromal cell-derived extracellular vesicle transport in meniscus fibrocartilage.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2025
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  9. Photoactivatable fluorescent probes reveal heterogeneous nanoparticle permeation through biological gels at multiple scales.Journal of controlled release : official journal of the Controlled Release Society · 2017
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  17. Relationship between solute transport properties and tissue morphology in human annulus fibrosus.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2009
    Article
  18. Review
  19. Article
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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.

T T TsayBiomedical Engineering Curriculum, School of Medicine, University of North Carolina, Chapel Hill 27599-7090.
K A Jacobson
Cancer Research Center · US

Funding

NIGMS NIH HHS GM41402
6 · The paper itself

Abstract

The major use of the fluorescence recovery after photobleaching (FRAP) technique is to measure the translational motion of the molecular components in various condensed media. In a conventional laser spot photobleaching experiment, a photomultiplier is used to measure the total brightness levels of the bleached region in the sample, so no spatial information can be directly obtained. In video-FRAP, a series of images after photobleaching is acquired, allowing the spatial character of the recovery to be determined; this permits direct detection of both anisotropic diffusion and flow. To utilize all of the available image data to determine the transport coefficients, a two-dimensional spatial Fourier transform analysis of the images after photobleaching was employed. The change in the transform between two time points reflects the action of diffusion during the interim. An important advantage of this method, which involves taking the ratio of image transforms at different time points, is that it does not require a specific initial condition to be created by laser photobleaching. The ability of the analysis to extract transport coefficients from computer-simulated diffusional recovery is assessed in the presence of increasing amounts of noise. Experimental data analysis from the diffusion of proteins in viscous solutions and from the diffusion of protein receptors on cell surfaces demonstrate the feasibility of the Fourier analysis to obtain transport coefficients from the video FRAP measurement.

Indexed as

Fourier AnalysisPhotochemistryBiophysical PhenomenaBiophysicsCell MembraneComputer SimulationDiffusionFluorescenceLasersMacromolecular SubstancesModels, TheoreticalMacromolecular Substances

Identifiers

PMID1912279
PMCPMC1260072
OpenAlexW1979747191

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.