Evidence map›Paper›PMID 20574026›Full record

ArticleInvestigative ophthalmology & visual science2010

Increased hyaluronan synthase-2 mRNA expression and hyaluronan accumulation with choroidal thickening: response during recovery from induced myopia.

Jody A Summers Rada, Allan F Wiechmann, Lindsey R Hollaway, Bruce A Baggenstoss, Paul H Weigel

Open access · hybridAbstract 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 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
0.7field-weighted citation impact, top 33% 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

13 citing papers in PubMed, 18 citations in OpenAlex.

  1. Critical role of lipid metabolism in axial myopia development.International journal of ophthalmology · 2025
    Review
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Effect of MT3 on Retinal and Choroidal TGF-Journal of ophthalmology · 2017
    Article
  8. Article
  9. Article
  10. Article
  11. The choroid as a sclera growth regulator.Experimental eye research · 2013
    Review
  12. Article
  13. 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

5 authors at 2 institutions in 2 countries.

Jody A Summers RadaDepartments of Cell Biology, University of Oklahoma Health Science Center, Oklahoma City, OK 73104, USA. jody-rada@ouhsc.edu
Allan F Wiechmann
Lindsey R Hollaway
Bruce A Baggenstoss
Paul H Weigel
Institute of Cell Biology · UAOphthalmology Associates (United States) · US

Funding

Regulation of Scleral Growth and Remodelling in MyopiaR01EY009391 · NEI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI SUMMERS, JODY A · 1992 to 2021
$6.5M
STRUCTURE/FUNCTION OF HYALURANAN BINDING PROTEINS/RECEPTR01GM035978 · NIGMS · UNIVERSITY OF TEXAS MEDICAL BR GALVESTON · PI WEIGEL, PAUL H · 1986 to 2012
$4.1M
NEI NIH HHS R01 EY009391NEI NIH HHS R01 EY09391NIGMS NIH HHS R01 GM035978NIGMS NIH HHS R01 GM35978
6 · The paper itself

Abstract

purposeSeveral studies have convincingly shown that in chicks, compensation for imposed focus involves immediate changes in choroid thickness. The molecular events associated with choroidal thickening and the regulation of the choroidal response are largely unknown.

methodsForm-deprivation myopia was induced in the right eyes of 2-day-old chicks by the application of translucent occluders for 10 days and was followed by unrestricted vision for an additional 1 to 20 days (recovery). Individual choroids were isolated from treated and control eyes and used for reverse transcription-quantitative PCR, hyaluronan (HA) localization with biotinylated hyaluronic acid binding protein (b-HABP), and analyses of HA size and concentration by size exclusion chromatography-multiangle laser light scattering (SEC-MALLS).

resultsHAS2 gene expression increased significantly after 6 hours of unrestricted vision (>7-fold) and peaked at 24 hours (>9-fold). In untreated eyes, HA was localized to perivascular sheaths of larger choroidal blood vessels; however, after 4 to 15 days of recovery, intense labeling for HA was detected throughout the thickened choroidal stroma. Analyses of choroidal HA by SEC-MALLS indicated that HA concentration was significantly increased in recovering choroids compared with controls after 4 to 8 days of recovery (≈3.5-fold).

conclusionsNewly synthesized HA accumulates in the choroidal stroma of recovering eyes and is most likely responsible for the stromal swelling observed during recovery from myopia. This HA accumulation is initiated by a rapid increase in choroidal expression of the HAS2 gene in response to myopic defocus.

Indexed as

AnimalsAnimals, NewbornChickensChoroidChromatography, GelDisease Models, AnimalGene Expression Regulation, EnzymologicGlucuronosyltransferaseHyaluronic AcidHypertrophyMaleMyopiaReverse Transcriptase Polymerase Chain ReactionRNA, MessengerSensory DeprivationGlucuronosyltransferaseHyaluronic AcidRNA, Messenger

Identifiers

PMID20574026
PMCPMC3055751
OpenAlexW2081357206

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.