Evidence map›Paper›PMID 16603503›Full record

ArticleBiophysical journal2006

Diffusional anisotropy in collagenous tissues: fluorescence imaging of continuous point photobleaching.

Holly A Leddy, Mansoor A Haider, Farshid Guilak

Open access · bronzeAbstract read
In one paragraph

Article in Biophysical journal, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
3.6field-weighted citation impact, top 8% 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

42 citing papers in PubMed, 85 citations in OpenAlex.

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  5. [Study on transport of small molecule rhodamine B within different layers of cartilage].Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi · 2022
    Article
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  20. Effects of cartilage impact with and without fracture on chondrocyte viability and the release of inflammatory markers.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2013
    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

3 authors at 2 institutions in 1 country.

Holly A LeddyDepartment of Surgery, Duke University Medical Center, Durham, North Carolina 27710, USA.
Mansoor A Haider
Farshid Guilak
Duke Medical Center · USNorth Carolina State University · US

Funding

Thermally-Triggered Intra-articular Drug Delivery for OAP01AR050245 · NIAMS · DUKE UNIVERSITY · PI GUILAK, FARSHID · 2003 to 2012
$11.5M
University Training Program in Biomolecular & Tissue EngineeringT32GM008555 · NIGMS · DUKE UNIVERSITY · PI GERSBACH, CHARLES A. · 1994 to 2021
$8.1M
VISCOELASTIC PROPERTIES OF NORMAL AND OA CHONDRONSR01AG015768 · NIA · WASHINGTON UNIVERSITY · PI GUILAK, FARSHID · 1998 to 2022
$7.7M
Mechanical and Osmotic Signaling in ChondrocytesR01AR048182 · NIAMS · DUKE UNIVERSITY · PI GUILAK, FARSHID · 2003 to 2013
$3.0M
NIAMS NIH HHS AR48182NIAMS NIH HHS AR50245NIAMS NIH HHS P01 AR050245NIAMS NIH HHS R01 AR048182NIA NIH HHS AG15768NIA NIH HHS R01 AG015768NIGMS NIH HHS GM08555NIGMS NIH HHS T32 GM008555
6 · The paper itself

Abstract

Molecular transport in avascular collagenous tissues such as articular cartilage occurs primarily via diffusion. The presence of ordered structures in the extracellular matrix may influence the local transport of macromolecules, leading to anisotropic diffusion depending on the relative size of the molecule and that of extracellular matrix structures. Here we present what we believe is a novel photobleaching technique for measuring the anisotropic diffusivity of macromolecules in collagenous tissues. We hypothesized that macromolecular diffusion is anisotropic in collagenous tissues, depending on molecular size and the local organization of the collagen structure. A theoretical model and experimental protocol for fluorescence imaging of continuous point photobleaching was developed to measure diffusional anisotropy. Significant anisotropy was observed in highly ordered collagenous tissues such as ligament, with diffusivity ratios>2 along the fiber direction compared to the perpendicular direction. In less-ordered tissues such as articular cartilage, diffusional anisotropy was dependent on site in the tissue and size of the diffusing molecule. Anisotropic diffusion was also dependent on the size of the diffusing molecule, with greatest anisotropy observed for larger molecules. These findings suggest that diffusional transport of macromolecules is anisotropic in collagenous tissues, with higher rates of diffusion along primary orientation of collagen fibers.

Indexed as

Models, BiologicalAnimalsAnisotropyCattleCollagenComputer SimulationConnective TissueDiffusionFluorescence Recovery After PhotobleachingIn Vitro TechniquesMicroscopy, FluorescenceCollagen

Identifiers

PMID16603503
PMCPMC1479052
OpenAlexW1976848578

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.