Evidence map›Paper›PMID 34287338›Full record

ReviewPediatric reports2021

Innate Immunity in Children and the Role of ACE2 Expression in SARS-CoV-2 Infection.

Mario Dioguardi, Angela Pia Cazzolla, Claudia Arena, Diego Sovereto, Giorgia Apollonia Caloro, Antonio Dioguardi, Vito Crincoli, Luigi Laino, Giuseppe Troiano, Lorenzo Lo Muzio

Abstract readReview
In one paragraph

Review in Pediatric reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
–field-weighted citation impact
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

23 citing papers in PubMed.

  1. Review
  2. Review
  3. Symptoms of long COVID in children and adolescents: a scoping review.Revista da Escola de Enfermagem da U S P · 2025
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. SARS-CoV-2 infection and its effects on the endocrine system.Best practice & research. Clinical endocrinology & metabolism · 2023
    Review
  17. Article
  18. Article
  19. Observational
  20. First Description of Serological Evidence for SARS-CoV-2 in Lactating Cows.Animals : an open access journal from MDPI · 2022
    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.

Mario DioguardiDepartment of Clinical and Experimental Medicine, University of Foggia, Via Rovelli 50, 71122 Foggia, Italy.ORCID 0000-0003-0949-3457
Angela Pia CazzollaDepartment of Clinical and Experimental Medicine, University of Foggia, Via Rovelli 50, 71122 Foggia, Italy.
Claudia ArenaDepartment of Clinical and Experimental Medicine, University of Foggia, Via Rovelli 50, 71122 Foggia, Italy.ORCID 0000-0001-7277-146X
Diego SoveretoDepartment of Clinical and Experimental Medicine, University of Foggia, Via Rovelli 50, 71122 Foggia, Italy.
Giorgia Apollonia CaloroUnità Operativa Nefrologia e Dialisi, Presidio Ospedaliero Scorrano, ASL (Azienda Sanitaria Locale) Lecce, Via Giuseppina Delli Ponti, 73020 Scorrano, Italy.
Antonio DioguardiU.S.C.A. "Unità Speciali di Continuità Assistenziale" Troia 2, ASL "Azienda Sanitaria Locale" Foggia Contrada Fontanelle, 71029 Troia, Italy.
Vito CrincoliDepartment of Basic Medical Sciences, Neurosciences and Sensory Organs, Division of Complex Operating Unit of Dentistry, "Aldo Moro" University of Bari, Piazza G. Cesare 11, 70124 Bari, Italy.ORCID 0000-0003-0236-0205
Luigi LainoMultidisciplinary Department of Medical-Surgical and Odontostomatological Specialties, University of Campania "Luigi Vanvitelli", 80121 Naples, Italy.ORCID 0000-0003-2372-7109
Giuseppe TroianoDepartment of Clinical and Experimental Medicine, University of Foggia, Via Rovelli 50, 71122 Foggia, Italy.ORCID 0000-0001-5647-4414
Lorenzo Lo MuzioDepartment of Clinical and Experimental Medicine, University of Foggia, Via Rovelli 50, 71122 Foggia, Italy.ORCID 0000-0003-4633-4893

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

COVID-19 (Coronavirus Disease 2019) is an emerging viral disease caused by the coronavirus SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2), which leads to severe respiratory infections in humans. The first reports came in December 2019 from the city of Wuhan in the province of Hubei in China. It was immediately clear that children developed a milder disease than adults. The reasons for the milder course of the disease were attributed to several factors: innate immunity, difference in ACE2 (angiotensin-converting enzyme II) receptor expression, and previous infections with other common coronaviruses (CovH). This literature review aims to summarize aspects of innate immunity by focusing on the role of ACE2 expression and viral infections in children in modulating the antibody response to SARS-CoV-2 infection. This review was conducted using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Articles deemed potentially eligible were considered, including those dealing with COVID-19 in children and providing more up-to-date and significant data in terms of epidemiology, prognosis, course, and symptoms, focusing on the etiopathogenesis of SARS-CoV-2 disease in children. The bibliographic search was conducted using the search engines PubMed and Scopus. The following search terms were entered in PubMed and Scopus: COVID-19 AND ACE2 AND Children; COVID-19 AND Immunity innate AND children. The search identified 857 records, and 18 studies were applicable based on inclusion and exclusion criteria that addressed the issues of COVID-19 concerning the role of ACE2 expression in children. The scientific literature agrees that children develop milder COVID-19 disease than adults. Milder symptomatology could be attributed to innate immunity or previous CovH virus infections, while it is not yet fully understood how the differential expression of ACE2 in children could contribute to milder disease.

Indexed as

ACE-2adolescentschildrencoronavirusCOVID-19SARS-CoV-2

Identifiers

PMID34287338
PMCPMC8293341

What OpenQuestion holds

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Registered trials

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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.