Evidence map›Paper›PMID 24520184›Full record

ArticleMolecular vision2014

Epigallocatechin gallate eye drops protect against ultraviolet B-induced corneal oxidative damage in mice.

Mu-Hsin Chen, Chia-Fang Tsai, Yu-Wen Hsu, Fung-Jou Lu

Open access · greenAbstract read
In one paragraph

Article in Molecular vision, 2014. 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
3.1field-weighted citation impact, top 9% 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, 27 citations in OpenAlex.

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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

4 authors at 3 institutions in 1 country.

Mu-Hsin ChenInstitute of Medicine, College of Medicine, Chung Shan Medical University, Taichung City, Taiwan, ROC.
Chia-Fang TsaiDepartment of Biotechnology, TransWorld University, Douliu City, Taiwan, ROC.
Yu-Wen HsuSchool of Occupational Safety and Health, Chung Shan Medical University, Taichung City, Taiwan, ROC ; Department of Ophthalmology, Chung Shan Medical University Hospital, Taichung City, Taiwan, ROC.
Fung-Jou LuInstitute of Medicine, College of Medicine, Chung Shan Medical University, Taichung City, Taiwan, ROC ; Department of Ophthalmology, Chung Shan Medical University Hospital, Taichung City, Taiwan, ROC.
Chung Shan Medical University Hospital · TWChung Shan Medical University · TWTransWorld University · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeUltraviolet B (UVB) radiation from sunlight is a known risk factor for human corneal injury. The aim of the present study was to investigate the protective effects of green tea polyphenol epigallocatechin gallate (EGCG) on UVB radiation-induced corneal oxidative damage in male imprinting control region (ICR) mice.

methodsCorneal oxidative damage was induced by exposure to UVB radiation at 560 μW/cm(2). The animals received 0%, 0.1%, and 0.01% EGCG eye drops at a 5 mg/ml dose, twice daily for 8 days. Corneal surface damage was graded according to smoothness and the extent of lissamine green staining. Corneal glutathione (GSH), thiobarbituric acid-reactive substances (TBARS), and protein carbonyl levels, as well as superoxide dismutase (SOD), catalase, glutathione peroxidase (GSH-Px), and glutathione reductase (GSH-Rd) activity in the cornea, were measured to monitor corneal injury.

resultsUVB radiation caused significant damage to the corneas, including apparent corneal ulceration and severe epithelial exfoliation, leading to a decrease in SOD, catalase, GSH-Px, GSH-Rd, and GSH activity in the cornea. However, the corneal TBARS and protein carbonyls increased compared with the control group. Treatment with EGCG eye drops significantly (p<0.05) ameliorated corneal damage, increased SOD, catalase, GSH-Px, GSH-Rd, and GSH activity, and decreased the TBARS and protein carbonyls in the corneas compared with the UVB-treated group.

conclusionsEGCG eye drops exhibit potent protective effects on UVB radiation-induced corneal oxidative damage in mice, likely due to the increase in antioxidant defense system activity and the inhibition of lipid peroxidation and protein oxidation.

Indexed as

Ultraviolet RaysAnimalsAntioxidantsCatalaseCatechinCorneaGlutathioneGlutathione PeroxidaseGlutathione ReductaseHumansLissamine Green DyesMaleMiceMice, Inbred ICROphthalmic SolutionsOxidative StressAntioxidantsCatalaseCatechinepigallocatechin gallateGlutathioneGlutathione PeroxidaseGlutathione ReductaseLissamine Green DyesOphthalmic SolutionsProtective AgentsSuperoxide DismutaseThiobarbituric Acid Reactive Substances

Identifiers

PMID24520184
PMCPMC3919670
OpenAlexW2150828480

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.