Evidence map›Paper›PMID 22608476›Full record

ArticleOphthalmology2012

Cellular changes of the corneal epithelium and stroma in herpes simplex keratitis: an in vivo confocal microscopy study.

Pedram Hamrah, Afsun Sahin, Mohammad H Dastjerdi, Bashar M Shahatit, Hasan A Bayhan, Reza Dana, Deborah Pavan-Langston

Open access · greenAbstract readControlled Clinical Trial
In one paragraph

Article in Ophthalmology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
6.0field-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

28 citing papers in PubMed, 67 citations in OpenAlex.

  1. Review
  2. Review
  3. Immune responses to injury and their links to eye disease.Translational research : the journal of laboratory and clinical medicine · 2021
    Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Impact of herpetic stromal immune keratitis in corneal biomechanics and innervation.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2018
    Observational
  14. Article
  15. Article
  16. Review
  17. Challenges of corneal infections.Expert review of ophthalmology · 2016
    Article
  18. Article
  19. Observational
  20. 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

7 authors at 3 institutions in 2 countries.

Pedram HamrahOcular Surface Imaging Center, Cornea Service, Massachusetts Eye & Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts 02114, USA. pedram_hamrah@meei.harvard.edu
Afsun Sahin
Mohammad H Dastjerdi
Bashar M Shahatit
Hasan A Bayhan
Reza Dana
Deborah Pavan-Langston
Massachusetts Eye and Ear Infirmary · USHarvard University · USImaging Center · US

Funding

Immunobiology of Corneal Antigen-Presenting CellsK08EY020575 · NEI · MASSACHUSETTS EYE AND EAR INFIRMARY · PI HAMRAH, PEDRAM · 2010 to 2013
$914k
New Strategies for Modulation of Corneal and Ocular Surface InflammationK24EY019098 · NEI · MASSACHUSETTS EYE AND EAR INFIRMARY · PI DANA, REZA · 2008 to 2012
$594k
NEI NIH HHS K08 EY020575NEI NIH HHS K08-EY020575NEI NIH HHS K24 EY019098NEI NIH HHS K24-EY019098NEI NIH HHS L30 EY021919
6 · The paper itself

Abstract

purposeTo analyze the morphologic features of corneal epithelial cells and keratocytes by in vivo confocal microscopy in patients with herpes simplex keratitis (HSK) as associated with corneal innervation.

designProspective, cross-sectional, controlled, single-center study.

participantsThirty-one eyes with the diagnosis HSK and their contralateral clinically unaffected eyes were studied and compared with normal controls (n = 15).

methodsIn vivo confocal microscopy (Confoscan 4; Nidek Technologies, Gamagori, Japan) and corneal esthesiometry (Cochet-Bonnet; Luneau Ophthalmologie, Chartres, France) of the central cornea were performed bilaterally in all patients and controls. Patients were grouped into normal (>5.5 cm), mild (>2.5-5.5 cm), and severe (<2.5 cm) loss of sensation.

main outcome measuresChanges in morphologic features and density of the superficial and basal epithelial cells, as well as stromal keratocytes, were assessed by 2 masked observers. Changes were correlated to corneal sensation, number of nerves, and total length of nerves.

resultsThere was a significant and gradual decrease in the density of superficial epithelial cells in HSK eyes, with 852.50 ± 24.4 cells/mm(2) in eyes with severe sensation loss and 2435.23 ± 224.3 cells/mm(2) in control eyes (P = 0.008). Superficial epithelial cell size was 2.5-fold larger in HSK eyes (835.3 μm(2)) compared with contralateral or normal eyes (407.4 μm(2); P = 0.003). A significant number of hyperreflective desquamating superficial epithelial cells were present in HSK eyes with normal (6.4%), mild (29.1%), and severe (52.2%) loss of sensation, but were absent in controls. The density of basal epithelial cells, anterior keratocytes, and posterior keratocytes did not show statistical significance between patients and controls. Changes in superficial epithelial cell density and morphologic features correlated strongly with total nerve length, number, and corneal sensation. Scans of contralateral eyes did not show any significant epithelial or stromal changes compared with controls.

conclusionsIn vivo confocal microscopy reveals profound HSK-induced changes in the superficial epithelium, as demonstrated by increase in cell size, decrease in cell density, and squamous metaplasia. This study demonstrated that these changes correlate strongly with changes in corneal innervation.

Indexed as

Cell CountCell SizeCorneaCorneal KeratocytesCorneal StromaCranial Nerve DiseasesCross-Sectional StudiesEpithelium, CornealFemaleHumansKeratitis, HerpeticMaleMicroscopy, ConfocalMiddle AgedOphthalmic NerveProspective Studies

Identifiers

PMID22608476
PMCPMC3426622
OpenAlexW20656662

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.