Evidence map›Paper›PMID 20019371›Full record

ArticleInvestigative ophthalmology & visual science2010

Formation and disassembly of adherens and tight junctions in the corneal endothelium: regulation by actomyosin contraction.

Charanya Ramachandran, Sangly P Srinivas

Open access · greenAbstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.8field-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

24 citing papers in PubMed, 44 citations in OpenAlex.

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  11. Transcriptomic analysis of differential gene expression during chick periocular neural crest differentiation into corneal cells.Developmental dynamics : an official publication of the American Association of Anatomists · 2019
    Article
  12. Article
  13. Review
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  17. Review
  18. Review
  19. Review
  20. P2Y receptors as regulators of lung endothelial barrier integrity.Journal of cardiovascular disease research · 2011
    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

2 authors at 1 institution in 1 country.

Charanya RamachandranSchool of Optometry, Indiana University, Bloomington, Indiana, USA.
Sangly P Srinivas
Indiana University Bloomington · US

Funding

Kinetics of Drug Penetration Across the Cornea at a Microscopic LevelR21EY019119 · NEI · TRUSTEES OF INDIANA UNIVERSITY · PI SRINIVAS, SANGLY P · 2008 to 2009
$410k
NEI NIH HHS R21 EY019119NEI NIH HHS R21-EY019119
6 · The paper itself

Abstract

Purpose. To determine the role of actin cytoskeleton in the disassembly and reformation of adherens junctions (AJs) and tight junctions (TJs) in bovine corneal endothelial monolayers. Methods. Disassembly and reformation of AJs and TJs were induced by extracellular Ca(2+) depletion and subsequent add-back of Ca(2+), respectively. Resultant changes in the transendothelial electrical resistance (TER), an indicator of integrity of TJs, were measured based on electrical cell-substrate impedance. Phosphorylated myosin light chain (ppMLC), a biochemical measure of actomyosin contraction, and activation of its upstream regulatory molecule RhoA-GTP were assessed by Western blot analysis. Results. Extracellular Ca(2+) depletion led to activation of RhoA, increase in ppMLC, decrease in TER, contraction of the perijunctional actomyosin ring (PAMR), and redistribution of zonula occludens-1 (ZO-1) and cadherins. These effects were reversed on Ca(2+) add-back. Pretreatment with Y-27632 and blebbistatin (as inhibitors of actomyosin contraction) reduced the rate of decline in TER, opposed the contraction of the PAMR, and blocked the redistribution of ZO-1 and cadherins. Both drugs reduced the recovery in TER and opposed the normal redistribution of ZO-1 and cadherins on Ca(2+) add-back. Cytochalasin D, which led to dissolution of the PAMR, also reduced the recovery of TER on Ca(2+) add-back. Conclusions. The (Ca(2+) depletion)-induced disassembly of AJs accelerates the breakdown of TJs through a concomitant increase in the actomyosin contraction of the PAMR. However, these data on reassembly show that a contractile tone of the PAMR is essential for assembly of the apical junctional complex.

Indexed as

ActinsActomyosinAdherens JunctionsAmidesAnimalsBlotting, WesternCadherinsCalciumCattleCell Culture TechniquesElectric ImpedanceEndothelium, CornealFluorescent Antibody Technique, IndirectHeterocyclic Compounds, 4 or More RingsMembrane ProteinsMyosin Light ChainsActinsActomyosinAmidesblebbistatinCadherinsCalciumHeterocyclic Compounds, 4 or More RingsMembrane ProteinsMyosin Light ChainsPhosphoproteinsPyridinesrhoA GTP-Binding ProteinY 27632Zonula Occludens-1 Protein

Identifiers

PMID20019371
PMCPMC2868408
OpenAlexW2091430959

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.