Evidence map›Paper›PMID 24662332›Full record

ArticleOphthalmic research2014

Human corneal epithelial cells produce antimicrobial peptides LL-37 and β-defensins in response to heat-killed Candida albicans.

Xia Hua, Xiaoyong Yuan, Xin Tang, Zhijie Li, Stephen C Pflugfelder, De-Quan Li

Abstract read
In one paragraph

Article in Ophthalmic research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.5field-weighted citation impact, top 20% 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

18 citing papers in PubMed, 26 citations in OpenAlex.

  1. Article
  2. Oral Innate Immunity and the Role of Oral Epithelial Cells.Advances in experimental medicine and biology · 2026
    Review
  3. Review
  4. Article
  5. Article
  6. Article
  7. Immunomodulatory and Allergenic Properties of Antimicrobial Peptides.International journal of molecular sciences · 2022
    Review
  8. Review
  9. Review
  10. Article
  11. Immunologic mechanism of fungal keratitis.International journal of ophthalmology · 2021
    Review
  12. Pathogens (Basel, Switzerland) · 2019
    Review
  13. Visions of Eye Commensals: The Known and the Unknown About How the Microbiome Affects Eye Disease.BioEssays : news and reviews in molecular, cellular and developmental biology · 2018
    Review
  14. Article
  15. Oral innate immunity in HIV infection in HAART era.Journal of oral pathology & medicine : official publication of the International Association of Oral Pathologists and the American Academy of Oral Pathology · 2016
    Review
  16. Article
  17. Article
  18. 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

6 authors at 4 institutions in 2 countries.

Xia HuaTianjin Eye Hospital, Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China.
Xiaoyong Yuan
Xin Tang
Zhijie Li
Stephen C Pflugfelder
De-Quan Li
Baylor College of Medicine · USTianjin Medical University · CNOcular Surface Center · USTianjin Medical University Eye Hospital · CN

Funding

VISION RESEARCH CENTERP30EY002520 · NEI · BAYLOR COLLEGE OF MEDICINE · PI Samuel M Wu · 1985 to 2026
$14.8M
PATHOGENESIS OF CONJUNCTIVAL SQUAMOUS METAPLASIAR01EY011915 · NEI · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI PFLUGFELDER, STEPHEN C · 1997 to 2023
$8.0M
NEI NIH HHS P30 EY002520NEI NIH HHS R01 EY011915
6 · The paper itself

Abstract

aimsTo explore the innate response of human corneal epithelial cells (HCECs) exposed to fungus by producing antimicrobial peptides LL-37 and β-defensins.

methodsPrimary HCECs were treated with heat-killed Candida albicans (HKCA) at different doses (10(3)-10(6) cells/ml) for 2-48 h. The cells were subjected to total RNA extraction, reverse transcription and quantitative real-time PCR for mRNA expression. Cells treated for 48 h were used for immunofluorescent staining and ELISA.

resultsHuman LL-37 and β-defensins (hBDs) 1-4 were detected in normal HCECs. The mRNA expression of LL-37, hBD2, and hBD3 was dose-dependently induced by HKCA with their peak levels at 4 h. HKCA (10(6) cells/ml) stimulated the mRNA of LL-37, hBD2, and hBD3 4.33 ± 1.81, 3.75 ± 1.31, and 4.91 ± 1.09 fold, respectively, in HCECs. The stimulated production of LL-37, hBD2, and hBD3 by HKCA was confirmed at protein levels by immunofluorescent staining and ELISA. The protein production of LL-37, hBD2, and hBD3 significantly increased to 109.1 ± 18.2 pg/ml, 4.33 ± 1.67 ng/ml, and 296.9 ± 81.8 pg/ml, respectively, in culture medium of HCECs exposed to HKCA (10(6) cells/ml) compared to untreated HCECs.

conclusionsHCECs produce antimicrobial peptides, LL-37, hBD2 and hBD3, in response to stimulation of HKCA, which suggests a novel innate immune mechanism of the ocular surface in defense against fungal invasion.

Indexed as

AdultAntimicrobial Cationic Peptidesbeta-DefensinsCandida albicansCathelicidinsCells, CulturedEnzyme-Linked Immunosorbent AssayEpithelial CellsEpithelium, CornealFluorescent Antibody Technique, IndirectGene Expression RegulationHumansMiddle AgedReal-Time Polymerase Chain ReactionRNA, MessengerYoung AdultAntimicrobial Cationic Peptidesbeta-DefensinsCathelicidinsRNA, Messenger

Identifiers

PMID24662332
PMCPMC5744485
OpenAlexW1993917762

What OpenQuestion holds

Textmetadata
LicenceTDM
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.