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Innate Immunity in Children and the Role of ACE2 Expression in SARS-CoV-2 Infection.
Pediatr Rep. 2021 Jul 02; 13(3):363-382.PR

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.

Authors+Show Affiliations

Department of Clinical and Experimental Medicine, University of Foggia, Via Rovelli 50, 71122 Foggia, Italy.Department of Clinical and Experimental Medicine, University of Foggia, Via Rovelli 50, 71122 Foggia, Italy.Department of Clinical and Experimental Medicine, University of Foggia, Via Rovelli 50, 71122 Foggia, Italy.Department of Clinical and Experimental Medicine, University of Foggia, Via Rovelli 50, 71122 Foggia, Italy.Unità Operativa Nefrologia e Dialisi, Presidio Ospedaliero Scorrano, ASL (Azienda Sanitaria Locale) Lecce, Via Giuseppina Delli Ponti, 73020 Scorrano, Italy.U.S.C.A. "Unità Speciali di Continuità Assistenziale" Troia 2, ASL "Azienda Sanitaria Locale" Foggia Contrada Fontanelle, 71029 Troia, Italy.Department 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.Multidisciplinary Department of Medical-Surgical and Odontostomatological Specialties, University of Campania "Luigi Vanvitelli", 80121 Naples, Italy.Department of Clinical and Experimental Medicine, University of Foggia, Via Rovelli 50, 71122 Foggia, Italy.Department of Clinical and Experimental Medicine, University of Foggia, Via Rovelli 50, 71122 Foggia, Italy.

Pub Type(s)

Journal Article
Review

Language

eng

PubMed ID

34287338

Citation

Dioguardi, Mario, et al. "Innate Immunity in Children and the Role of ACE2 Expression in SARS-CoV-2 Infection." Pediatric Reports, vol. 13, no. 3, 2021, pp. 363-382.
Dioguardi M, Cazzolla AP, Arena C, et al. Innate Immunity in Children and the Role of ACE2 Expression in SARS-CoV-2 Infection. Pediatr Rep. 2021;13(3):363-382.
Dioguardi, M., Cazzolla, A. P., Arena, C., Sovereto, D., Caloro, G. A., Dioguardi, A., Crincoli, V., Laino, L., Troiano, G., & Lo Muzio, L. (2021). Innate Immunity in Children and the Role of ACE2 Expression in SARS-CoV-2 Infection. Pediatric Reports, 13(3), 363-382. https://doi.org/10.3390/pediatric13030045
Dioguardi M, et al. Innate Immunity in Children and the Role of ACE2 Expression in SARS-CoV-2 Infection. Pediatr Rep. 2021 Jul 2;13(3):363-382. PubMed PMID: 34287338.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Innate Immunity in Children and the Role of ACE2 Expression in SARS-CoV-2 Infection. AU - Dioguardi,Mario, AU - Cazzolla,Angela Pia, AU - Arena,Claudia, AU - Sovereto,Diego, AU - Caloro,Giorgia Apollonia, AU - Dioguardi,Antonio, AU - Crincoli,Vito, AU - Laino,Luigi, AU - Troiano,Giuseppe, AU - Lo Muzio,Lorenzo, Y1 - 2021/07/02/ PY - 2021/06/17/received PY - 2021/06/28/revised PY - 2021/06/28/accepted PY - 2021/7/21/entrez PY - 2021/7/22/pubmed PY - 2021/7/22/medline KW - ACE-2 KW - COVID-19 KW - SARS-CoV-2 KW - adolescents KW - children KW - coronavirus SP - 363 EP - 382 JF - Pediatric reports JO - Pediatr Rep VL - 13 IS - 3 N2 - 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. SN - 2036-749X UR - https://www.unboundmedicine.com/medline/citation/34287338/Innate_Immunity_in_Children_and_the_Role_of_ACE2_Expression_in_SARS-CoV-2_Infection. L2 - https://www.mdpi.com/resolver?pii=pediatric13030045 DB - PRIME DP - Unbound Medicine ER -
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