Evidence map›Paper›PMID 21345981›Full record

ArticleInvestigative ophthalmology & visual science2011

Intermediate filaments regulate tissue size and stiffness in the murine lens.

Douglas S Fudge, John V McCuaig, Shannon Van Stralen, John F Hess, Huan Wang, Richard T Mathias, Paul G FitzGerald

Open access · bronzeAbstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed
0.8field-weighted citation impact, top 29% 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

46 citing papers in PubMed, 62 citations in OpenAlex.

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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

7 authors at 2 institutions in 2 countries.

Douglas S FudgeDepartment. of Integrative Biology, University of Guelph, Guelph, Ontario, Canada.
John V McCuaig
Shannon Van Stralen
John F Hess
Huan Wang
Richard T Mathias
Paul G FitzGerald
University of Guelph · CAUniversity of California, Davis · US

Funding

VISION RESEARCH CORE GRANTP30EY012576 · NEI · UNIVERSITY OF CALIFORNIA DAVIS · PI LISA M OAKES · 1999 to 2026
$18.9M
VOLUME REGULATION IN NORMAL AND CATARACTOUS LENSESR01EY006391 · NEI · STATE UNIVERSITY NEW YORK STONY BROOK · PI MATHIAS, RICHARD T · 1985 to 2014
$5.4M
MOLECULAR ANALYSIS OF OCULAR LENS BEADED FILAMENTSR01EY008747 · NEI · UNIVERSITY OF CALIFORNIA DAVIS · PI FITZGERALD, PAUL GILLESPIE · 1990 to 2010
$4.5M
EXTRAMURAL RESEARCH FACILITIES CONSTRUCTIONC06RR012088 · NCRR · UNIVERSITY OF CALIFORNIA DAVIS · PI CURRY, FITZ-ROY E · 1996 to 1996
–
NCRR NIH HHS C06 RR012088NCRR NIH HHS C06 RR-12088-01NEI NIH HHS EY06391NEI NIH HHS P30 EY012576NEI NIH HHS P30 EY12576NEI NIH HHS R01 EY006391NEI NIH HHS R01 EY008747NEI NIH HHS R01 EY08747
6 · The paper itself

Abstract

purposeTo define the contributions of the beaded filament (BF), a lens-specific intermediate filament (IF), to lens morphology and biomechanics.

methodsWild-type and congenic CP49 knockout (KO) mice were compared by using electrophysiological, biomechanical, and morphometric approaches, to determine changes that occurred because of the absence of this cytoskeletal structure.

resultsElectrophysiological assessment established that the fiber cells lacking the lens-specific IFs were indistinguishable from wild-type fiber cells. The CP49 KO mice exhibited lower stiffness, and an unexpected higher resilience than the wild-type lenses. The absence of these filaments resulted in lenses that were smaller, and exhibited a higher ratio of lens:lens nucleus size. Finally, lens shape differed as well, with the CP49 KO showing a higher ratio of axial:equatorial diameter.

conclusionsPrevious work has shown that BFs are necessary in maintaining fiber cell and lens structural phenotypes with age, and that absence of these filaments results in a loss of lens clarity. This work demonstrates that several tissue-level properties that are critical to lens function are also dependent, at least in part, on the presence of these lens-specific IFs.

Indexed as

AgingAnimalsElasticityElectric ImpedanceEye ProteinsIntermediate Filament ProteinsLens, CrystallineMiceMice, Inbred C57BLMice, KnockoutOrgan SizeEye ProteinsfilensinIntermediate Filament Proteinsphakinin

Identifiers

PMID21345981
PMCPMC3109061
OpenAlexW2142460261

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.