Evidence map›Paper›PMID 28902914›Full record

ArticlePloS one2017

Oxidative stress induces dysregulated autophagy in corneal epithelium of keratoconus patients.

Rohit Shetty, Anupam Sharma, Natasha Pahuja, Priyanka Chevour, Neeraja Padmajan, Kamesh Dhamodaran, Chaitra Jayadev, Rudy M M A Nuijts, Arkasubhra Ghosh, Jeyabalan Nallathambi

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed, 3 pooled it
5.1field-weighted citation impact, top 4% 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

47 citing papers in PubMed, 3 syntheses or guidelines pooled it, 77 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Update on the Physiopathology of Keratoconus.Medical sciences (Basel, Switzerland) · 2026
    Review
  5. Article
  6. Autophagy in ocular diseases: from mechanisms to therapeutic potential.Frontiers in cell and developmental biology · 2026
    Review
  7. Article
  8. Characterization of Corneal Defects in ATG7-Deficient Mice.International journal of molecular sciences · 2025
    Article
  9. Review
  10. Review
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Systemic and Ocular Associations of Keratoconus.Expert review of ophthalmology · 2024
    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 3 institutions in 2 countries.

Rohit ShettyDepartment of Cornea and Refractive surgery, Narayana Nethralaya Eye Hospital, Narayana Health City, Bommasandra, Bangalore, Karnataka, India.
Anupam SharmaGROW Research Laboratory, Narayana Nethralaya Foundation, Bangalore, Karnataka, India.
Natasha PahujaDepartment of Cornea and Refractive surgery, Narayana Nethralaya Eye Hospital, Narayana Health City, Bommasandra, Bangalore, Karnataka, India.
Priyanka ChevourGROW Research Laboratory, Narayana Nethralaya Foundation, Bangalore, Karnataka, India.
Neeraja PadmajanGROW Research Laboratory, Narayana Nethralaya Foundation, Bangalore, Karnataka, India.
Kamesh DhamodaranGROW Research Laboratory, Narayana Nethralaya Foundation, Bangalore, Karnataka, India.
Chaitra JayadevDepartment of Cornea and Refractive surgery, Narayana Nethralaya Eye Hospital, Narayana Health City, Bommasandra, Bangalore, Karnataka, India.
Rudy M M A NuijtsMaastricht University Medical Centre, Maastricht, The Netherlands.
Arkasubhra GhoshGROW Research Laboratory, Narayana Nethralaya Foundation, Bangalore, Karnataka, India.
Jeyabalan NallathambiGROW Research Laboratory, Narayana Nethralaya Foundation, Bangalore, Karnataka, India.ORCID http://orcid.org/0000-0001-7380-8762
Narayana Nethralaya · INNarayana Health · INMaastricht University Medical Centre · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Oxidative stress is one of the key factors that contributes to the pathogenesis of keratoconus (KC). Macroautophagy is a vital cellular mechanism that is activated in response to oxidative stress. The aim of this study was to understand the role of the autophagic lysosomal pathway in the oxidative damage of KC corneal epithelium and the human corneal epithelial cell line (HCE).The corneal epithelium was collected from 78 KC patients undergoing corneal cross-linking or topography guided photorefractive keratectomy. We performed microarray, qPCR and western blot analysis for the expression of autophagy markers on this epithelium from patients with different clinical grades of KC. A differential expression pattern of autophagy related markers was observed in the diseased corneal cone-specific epithelium compared to matched peripheral epithelium from KC patients with increasing clinical severity. Human corneal epithelial cells exposed to oxidative stress were analyzed for the expression of key proteins associated with KC pathogenesis and the autophagic pathway. Oxidative stress led to an increase in reactive oxygen species and an imbalanced expression of autophagy markers in the HCE cells. Further, reduced levels of Akt/p70S6 Kinase, which is a known target of the mTOR pathway was observed in HCE cells under oxidative stress as well as in KC epithelium. Our results suggest that an altered expression of proteins suggestive of defective autophagy and is a consequence of oxidative damage. This could play a possible role in the pathogenesis of KC.

Indexed as

AutophagyOxidative StressAdultBiomarkersEpithelium, CornealHumansKeratoconusPhotorefractive KeratectomyReactive Oxygen SpeciesReal-Time Polymerase Chain ReactionBiomarkersReactive Oxygen Species

Identifiers

PMID28902914
PMCPMC5597215
OpenAlexW2754309942

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.