Evidence map›Paper›PMID 21515662›Full record

ArticleAmerican journal of physiology. Lung cellular and molecular physiology2011

Differential effects of claudin-3 and claudin-4 on alveolar epithelial barrier function.

Leslie A Mitchell, Christian E Overgaard, Christina Ward, Susan S Margulies, Michael Koval

Open access · greenAbstract read
In one paragraph

Article in American journal of physiology. Lung cellular and molecular physiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 76 papers.

0numbers the graph read from it
0cells of the map it votes in
76citing papers in PubMed
6.0field-weighted citation impact, top 4% 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

76 citing papers in PubMed, 120 citations in OpenAlex.

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  10. Early Radiation-Induced Changes in Lung Tissue and Intercellular Junctions: Implications for Tissue Repair and Fibrosis.Pathophysiology : the official journal of the International Society for Pathophysiology · 2024
    Article
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16 more citing papers are in PubMed but not listed here.

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

5 authors at 3 institutions in 1 country.

Leslie A MitchellDivision of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia 30322, USA.
Christian E Overgaard
Christina Ward
Susan S Margulies
Michael Koval
Pulmonary and Allergy Associates · USEmory and Henry College · USUniversity of Pennsylvania · US

Funding

THE ROLE OF TGFB IN ETHANOL MEDIATED LUNG INJURYP50AA013757 · NIAAA · EMORY UNIVERSITY · PI MARTIN, GREGORY S · 2003 to 2013
$15.7M
MECHANICAL INJURY OF THE ALVEOLAR EPITHELIUMR01HL057204 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI MARGULIES, SUSAN SHEPS · 1997 to 2010
$3.3M
Institutional Training Grant in Alcohol ResearchT32AA013528 · NIAAA · EMORY UNIVERSITY · PI GUIDOT, DAVID MARSHALL · 2002 to 2011
$3.2M
Molecular determinants of lung barrier functionR01HL083120 · NHLBI · EMORY UNIVERSITY · PI KOVAL, MICHAEL H. · 2006 to 2009
$1.4M
NHLBI NIH HHS R01-HL-083120NHLBI NIH HHS R01-HL-57204NIAAA NIH HHS AA-013528NIAAA NIH HHS P50-AA-013757NIAAA NIH HHS T32 AA013528
6 · The paper itself

Abstract

Alveolar barrier function depends critically on the claudin family tight junction proteins. Of the major claudins expressed by alveolar epithelial cells, claudin (Cldn)-3 and Cldn-4 are the most closely related by amino acid homology, yet they differ dramatically in the pattern of expression. Previously published reports have shown that Cldn-3 is predominantly expressed by type II alveolar epithelial cells; Cldn-4 is expressed throughout the alveolar epithelium and is specifically upregulated in response to acute lung injury. Using primary rat alveolar epithelial cells transduced with yellow fluorescent protein-tagged claudin constructs, we have identified roles for Cldn-3 and Cldn-4 in alveolar epithelial barrier function. Surprisingly, increasing expression of Cldn-3 decreased alveolar epithelial barrier function, as assessed by transepithelial resistance and dye flux measurements. Conversely, increasing Cldn-4 expression improved alveolar epithelial transepithelial resistance compared with control cells. Other alveolar epithelial tight junction proteins were largely unaffected by increased expression of Cldn-3 and Cldn-4. Taken together, these results demonstrate that, in the context of the alveolar epithelium, Cldn-3 and Cldn-4 have different effects on paracellular permeability, despite significant homology in their extracellular loop domains.

Indexed as

AnimalsCell Membrane PermeabilityClaudin-3Claudin-4Epithelial CellsMembrane ProteinsProtein TransportPulmonary AlveoliRatsRats, Sprague-DawleyRecombinant Fusion ProteinsRespiratory MucosaTight JunctionsTransduction, GeneticClaudin-3Claudin-4Cldn3 protein, ratMembrane ProteinsRecombinant Fusion Proteins

Identifiers

PMID21515662
PMCPMC3129905
OpenAlexW2150838419

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.