Evidence map›Paper›PMID 17217947›Full record

ArticleExperimental eye research2007

Transgenic overexpression of connexin50 induces cataracts.

June Chung, Viviana M Berthoud, Layne Novak, Rebecca Zoltoski, Benjamin Heilbrunn, Peter J Minogue, Xiaoqin Liu, Lisa Ebihara, Jer Kuszak, Eric C Beyer

Open access · greenAbstract read
In one paragraph

Article in Experimental eye research, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
1.1field-weighted citation impact, top 25% 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

21 citing papers in PubMed, 29 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Article
  5. Article
  6. Article
  7. Focus on lens connexins.BMC cell biology · 2017
    Review
  8. Article
  9. Article
  10. Article
  11. Connexin46fs380 causes progressive cataracts.Investigative ophthalmology & visual science · 2014
    Article
  12. Article
  13. Article
  14. Connexin mutants and cataracts.Frontiers in pharmacology · 2013
    Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. 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

10 authors at 4 institutions in 1 country.

June ChungDepartment of Pediatrics, University of Chicago, IL 60637, USA. jchung@peds.bsd.uchicago.edu
Viviana M Berthoud
Layne Novak
Rebecca Zoltoski
Benjamin Heilbrunn
Peter J Minogue
Xiaoqin Liu
Lisa Ebihara
Jer Kuszak
Eric C Beyer
University of Chicago · USRosalind Franklin University of Medicine and Science · USRush University Medical Center · USIllinois College of Optometry · US

Funding

BIOLOGY OF LENS INTERCELLULAR COMMUNICATIONR01EY008368 · NEI · WASHINGTON UNIVERSITY · PI BEYER, ERIC C · 1995 to 2018
$7.1M
INTERCELLULAR COMMUNICATION IN THE LENSR01EY010589 · NEI · ROSALIND FRANKLIN UNIV OF MEDICINE &SCI · PI EBIHARA, LISA · 1994 to 2013
$3.5M
ELECTRON MICROSCOPIC STUDIES OF THE CRYSTALLINE LENSR01EY006642 · NEI · RUSH UNIVERSITY MEDICAL CENTER · PI KUSZAK, JER · 1986 to 2006
$2.1M
MECHANISMS OF PHOTORECEPTOR OUTER SEGMENT DEVELOPMENTF32EY006642 · NEI · JOHNS HOPKINS UNIVERSITY · PI BELECKY-ADAMS, TERI L · 1995 to 1997
–
BIOLOGY OF LENS INTERCELLULAR COMMUNICATIONR29EY008368 · NEI · WASHINGTON UNIVERSITY · PI BEYER, ERIC C · 1990 to 1994
–
NEI NIH HHS EY-06642NEI NIH HHS EY-08368NEI NIH HHS EY-10589NEI NIH HHS F32 EY006642NEI NIH HHS R01 EY006642NEI NIH HHS R01 EY008368NEI NIH HHS R01 EY010589
6 · The paper itself

Abstract

To examine the effects of increased expression of Cx50 in the mouse lens, transgenic mice were generated using a DNA construct containing the human Cx50 coding region and a C-terminal FLAG epitope driven by the chicken betaB1-crystallin promoter. Expression of this protein in paired Xenopus oocytes induced gap junctional currents of similar magnitude to wild type human Cx50. Three lines of transgenic mice expressing the transgenic protein were analyzed. Lenses from transgenic mice were smaller than those from non-transgenic littermates, and had cataracts that were already visible at postnatal day 1. Expression of the transgene resulted in a 3- to 13-fold increase in Cx50 protein levels above those of non-transgenic animals. Light microscopy revealed alterations in epithelial cell differentiation, fiber cell structure, interactions between fiber cells and areas of liquefaction. Scanning electron microscopy showed fiber cells of varying widths with bulging areas along single fibers. Anti-Cx50 and anti-FLAG immunoreactivities were detected at appositional membranes and in intracellular vesicles in transgenic lenses. N-cadherin, Cx46, ZO-1 and aquaporin 0 localized mainly at the plasma membrane, although some N-cadherin and aquaporin 0 was associated with the intracellular vesicles. The abundance and solubility/integrity of alphaA-, alphaB-, beta- and gamma-crystallin were unaffected. These results demonstrate that transgenic expression of Cx50 in mice leads to cataracts associated with formation of cytoplasmic vesicles containing Cx50 and decreased or slowed epithelial differentiation without major alterations in the distribution of other integral membrane or membrane-associated proteins or the integrity/solubility of crystallins.

Indexed as

AnimalsAquaporinsCataractCells, CulturedConnexin 50ConnexinsCrystallinsElectrophysiologyEye ProteinsGene ExpressionGenetic EngineeringHumansImmunoblottingLens, CrystallineMembrane ProteinsMiceAquaporinsConnexin 50ConnexinsCrystallinsEye ProteinsMembrane ProteinsPhosphoproteinsTJP1 protein, humanTjp1 protein, mouseTJP1 protein, XenopusXenopus ProteinsZonula Occludens-1 Protein

Identifiers

PMID17217947
PMCPMC1857337
OpenAlexW2000946726

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.