Evidence map›Paper›PMID 32971472›Full record

ArticleEBioMedicine2020

Heterogeneous expression of the SARS-Coronavirus-2 receptor ACE2 in the human respiratory tract.

Miguel E Ortiz, Andrew Thurman, Alejandro A Pezzulo, Mariah R Leidinger, Julia A Klesney-Tait, Philip H Karp, Ping Tan, Christine Wohlford-Lenane, Paul B McCray, David K Meyerholz

Open access · goldAbstract read
In one paragraph

Article in EBioMedicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 132 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
132citing papers in PubMed, 1 pooled it
4.1field-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

132 citing papers in PubMed, 1 synthesis or guideline pooled it, 200 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Review
  6. Article
  7. Expression of angiotensin-converting enzyme 2, transmembrane serine protease 2, and sirtuin 1 proteins in lungs of different age groups.Jornal brasileiro de pneumologia : publicacao oficial da Sociedade Brasileira de Pneumologia e Tisilogia · 2026
    Article
  8. Review
  9. Article
  10. Article
  11. Review
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Review

72 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 1 institution in 1 country.

Miguel E OrtizDepartments of Pediatrics, University of Iowa College of Medicine, University of Iowa, Iowa City, IA, USA.
Andrew ThurmanDepartments of Internal Medicine, University of Iowa College of Medicine, University of Iowa, Iowa City, IA, USA.
Alejandro A PezzuloDepartments of Internal Medicine, University of Iowa College of Medicine, University of Iowa, Iowa City, IA, USA.
Mariah R LeidingerDepartments of Pathology, University of Iowa College of Medicine, University of Iowa, Iowa City, IA, USA.
Julia A Klesney-TaitDepartments of Internal Medicine, University of Iowa College of Medicine, University of Iowa, Iowa City, IA, USA.
Philip H KarpDepartments of Internal Medicine, University of Iowa College of Medicine, University of Iowa, Iowa City, IA, USA.
Ping TanDepartments of Internal Medicine, University of Iowa College of Medicine, University of Iowa, Iowa City, IA, USA.
Christine Wohlford-LenaneDepartments of Pediatrics, University of Iowa College of Medicine, University of Iowa, Iowa City, IA, USA.
Paul B McCrayDepartments of Pediatrics, University of Iowa College of Medicine, University of Iowa, Iowa City, IA, USA. Electronic address: paul-mccray@uiowa.edu.
David K MeyerholzDepartments of Pathology, University of Iowa College of Medicine, University of Iowa, Iowa City, IA, USA. Electronic address: david-meyerholz@uiowa.edu.
University of Iowa · US

Funding

Pulmonary Toxicology Facility CoreP30ES005605 · NIEHS · UNIVERSITY OF IOWA · PI Brandi Janssen · 1990 to 2026
$40.5M
SARS-CoV Proteins in Heterologous Viral InfectionP01AI060699 · NIAID · UNIVERSITY OF IOWA · PI PERLMAN, STANLEY · 2004 to 2021
$21.5M
Heat-shock protein 90 modulates goblet cell metaplasia in human airway epitheliaK01HL140261 · NHLBI · UNIVERSITY OF IOWA · PI PEZZULO, ALEJANDRO ANTONIO · 2019 to 2023
$746k
NHLBI NIH HHS K01 HL140261NIAID NIH HHS P01 AI060699NIEHS NIH HHS P30 ES005605
6 · The paper itself

Abstract

backgroundZoonotically transmitted coronaviruses are responsible for three disease outbreaks since 2002, including the current COVID-19 pandemic, caused by SARS-CoV-2. Its efficient transmission and range of disease severity raise questions regarding the contributions of virus-receptor interactions. ACE2 is a host ectopeptidase and the receptor for SARS-CoV-2. Numerous reports describe ACE2 mRNA abundance and tissue distribution; however, mRNA abundance is not always representative of protein levels. Currently, there is limited data evaluating ACE2 protein and its correlation with other SARS-CoV-2 susceptibility factors. MATERIALS AND

methodsWe systematically examined the human upper and lower respiratory tract using single-cell RNA sequencing and immunohistochemistry to determine receptor expression and evaluated its association with risk factors for severe COVID-19.

findingsOur results reveal that ACE2 protein is highest within regions of the sinonasal cavity and pulmonary alveoli, sites of presumptive viral transmission and severe disease development, respectively. In the lung parenchyma, ACE2 protein was found on the apical surface of a small subset of alveolar type II cells and colocalized with TMPRSS2, a cofactor for SARS-CoV2 entry. ACE2 protein was not increased by pulmonary risk factors for severe COVID-19. Additionally, ACE2 protein was not reduced in children, a demographic with a lower incidence of severe COVID-19.

interpretationThese results offer new insights into ACE2 protein localization in the human respiratory tract and its relationship with susceptibility factors to COVID-19.

Indexed as

AdultAgedAlveolar Epithelial CellsAngiotensin-Converting Enzyme 2BetacoronavirusChildChild, PreschoolCoronavirus InfectionsCOVID-19FemaleHumansMaleMiddle AgedPandemicsPeptidyl-Dipeptidase APneumonia, ViralACE2 protein, humanAngiotensin-Converting Enzyme 2Peptidyl-Dipeptidase ARNA, MessengerSerine EndopeptidasesTMPRSS2 protein, humanAlveolar type II cellsCiliated cellsExpressionImmunohistochemistryLung

Identifiers

PMID32971472
PMCPMC7505653
OpenAlexW3087588044

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.