Evidence map›Paper›PMID 33034620›Full record

ArticleJAMA ophthalmology2020

Severe Acute Respiratory Syndrome Coronavirus 2 Nucleocapsid Protein in the Ocular Tissues of a Patient Previously Infected With Coronavirus Disease 2019.

Ying Yan, Bo Diao, Yueping Liu, Wenqiang Zhang, Gang Wang, Xiao Chen

Open access · greenAbstract readCase Reports
In one paragraph

Article in JAMA ophthalmology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
4.4field-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

20 citing papers in PubMed, 37 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Observational
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Review
  11. Article
  12. Observational
  13. Article
  14. Presence of SARS-CoV-2 in a Cornea Transplant.Pathogens (Basel, Switzerland) · 2021
    Article
  15. Review
  16. Article
  17. Systemic diseases and the cornea.Experimental eye research · 2021
    Review
  18. Review
  19. Article
  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

6 authors at 1 institution in 1 country.

Ying YanDepartment of Ophthalmology, General Hospital of the Central Theater Command, Wuhan, China.
Bo DiaoLaboratory of Basic Medical, General Hospital of the Central Theater Command, Wuhan, China.
Yueping LiuLaboratory of Basic Medical, General Hospital of the Central Theater Command, Wuhan, China.
Wenqiang ZhangDepartment of Ophthalmology, General Hospital of the Central Theater Command, Wuhan, China.
Gang WangLaboratory of Basic Medical, General Hospital of the Central Theater Command, Wuhan, China.
Xiao ChenDepartment of Ophthalmology, General Hospital of the Central Theater Command, Wuhan, China.
Central Hospital of Wuhan · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Importance: Coronavirus disease 2019 (COVID-19) has been recognized as a pandemic by the World Health Organization. Whether severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) can also infect tissues besides the respiratory system, such as the ocular tissues, remains unclear. Objective: To determine whether SARS-CoV-2 exists intracellularly in the ocular tissues of a patient previously infected with COVID-19. Design, Setting, and Participants: This case study analyzed a patient previously infected with COVID-19 who had an acute glaucoma attack during her rehabilitation. Plasma samples and tissue specimens, including ones from the conjunctiva, anterior lens capsular, trabecular meshwork, and iris, were collected during phacoemulsification and trabeculectomy surgery. Specimens from another patient who had glaucoma but not COVID-19 were used as a negative control. Main Outcomes and Measures: Specimens were analyzed using hematoxylin-eosin staining. The nucleocapsid protein antigen of SARS-CoV-2 was measured in the conjunctiva, trabecular meshwork, and iris using immunofluorescence and immunohistochemistry. The expression of angiotensin-converting enzyme 2 receptor on the conjunctiva was measured using immunohistochemistry. Results: The patient with a previous COVID-19 infection was female and 64 years old, and the control patient without a COVID-19 infection history was male and 61 years old. The nucleocapsid protein antigen of SARS-CoV-2 was detected on the cells of the conjunctiva, trabecular, and iris of the patient infected with COVID-19 but not in the control participant, while angiotensin-converting enzyme 2 receptor proteins were detected on the conjunctiva of both patients. Conclusions and Relevance: The nucleocapsid protein antigen of SARS-CoV-2 existed intracellularly in the ocular tissues of a patient previously infected with COVID-19. Thus, SARS-CoV-2 can also infect ocular tissues in addition to the respiratory system.

Indexed as

Coronavirus Nucleocapsid ProteinsCOVID-19EyeFemaleHumansMiddle AgedPhosphoproteinsCoronavirus Nucleocapsid Proteinsnucleocapsid phosphoprotein, SARS-CoV-2Phosphoproteins

Identifiers

PMID33034620
PMCPMC7545349
OpenAlexW3091968397

What OpenQuestion holds

Textmetadata
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.