Evidence map›Paper›PMID 22916220›Full record

SynthesisPloS one2012

αA crystallin may protect against geographic atrophy-meta-analysis of cataract vs. cataract surgery for geographic atrophy and experimental studies.

Peng Zhou, Hong-Fei Ye, Yong-Xiang Jiang, Jin Yang, Xiang-Jia Zhu, Xing-Huai Sun, Yi Luo, Guo-Rui Dou, Yu-Sheng Wang, Yi Lu

Open access · goldAbstract readMeta-Analysis
In one paragraph

Synthesis in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
0.7field-weighted citation impact, top 31% 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

10 citing papers in PubMed, 11 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. A functional polymorphism in the promoter of αA-crystallin increases the risk of nAMD.International journal of clinical and experimental pathology · 2019
    Article
  5. Review
  6. Review
  7. Article
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  10. 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 2 institutions in 1 country.

Peng ZhouDepartment of Ophthalmology, Eye and ENT Hospital of Fudan University, Shanghai, People's Republic of China.
Hong-Fei Ye
Yong-Xiang Jiang
Jin Yang
Xiang-Jia Zhu
Xing-Huai Sun
Yi Luo
Guo-Rui Dou
Yu-Sheng Wang
Yi Lu
Eye & ENT Hospital of Fudan University · CNXijing Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCataract and geographic atrophy (GA, also called advanced "dry" age-related macular degeneration) are the two major causes of visual impairment in the developed world. The association between cataract surgery and the development of GA was controversial in previous studies. METHODS/PRINCIPAL

findingsWe performed a meta-analysis by pooling the current evidence in literature and found that cataract is associated with an increased risk of geographic atrophy with a summary odds ratio (OR) of 3.75 (95% CI: 95% CI: 1.84-7.62). However, cataract surgery is not associated with the risk of geographic atrophy (polled OR=3.23, 95% CI: 0.63-16.47). Further experiments were performed to analyze how the αA-crystallin, the major component of the lens, influences the development of GA in a mouse model. We found that theαA-crystallin mRNA and protein expression increased after oxidative stress induced by NaIO(3) in immunohistochemistry of retinal section and western blot of posterior eyecups. Both functional and histopathological evidence confirmed that GA is more severe in αA-crystallin knockout mice compared to wild-type mice.

conclusionsTherefore, αA-crystallin may protect against geographic atrophy. This study provides a better understanding of the relationship between cataract, cataract surgery, and GA.

Indexed as

Cataract Extractionalpha-Crystallin A ChainAnimalsBlotting, WesternCataractCells, CulturedElectroretinographyGeographic AtrophyHumansImmunohistochemistryIodatesMiceMice, KnockoutOxidative StressReactive Oxygen SpeciesReal-Time Polymerase Chain Reactionalpha-Crystallin A ChainIodatesReactive Oxygen Speciessodium iodate

Identifiers

PMID22916220
PMCPMC3423426
OpenAlexW2064202747

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.