Age-related differences in the immune response could contribute to determine the spectrum of severity of COVID-19

© 2021 The Authors. Immunity, Inflammation and Disease published by John Wiley & Sons Ltd..

Coronavirus disease 2019 (COVID-19), can present with a wide spectrum of severity. Elderly patients with cardiac, pulmonary and metabolic comorbidities are more likely to develop the severe manifestations of COVID-19, which are observed in less than 5% of the pediatric patients. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is able to induce an immune impairment and dysregulation, finally resulting in the massive release of inflammatory mediators, strongly contributing to the pulmonary and systemic manifestations in COVID-19. In children, the immune dysregulation following SARS-CoV-2 can also be responsible of a severe disease phenotype defined as multisystem inflammatory syndrome in children. As the immune system undergoes a complex process of maturation from birth to adult age, differences in the immune and inflammatory response could have a significant impact in determining the spectrum of severity of COVID-19. Indeed, children show a higher ability to respond to viral infections and a reduced baseline pro-inflammatory state compared with elderly patients. Age and comorbidities contribute to disease severity through immune-mediated mechanisms, since they are associated with a chronic increase of pro-inflammatory mediators, and cause an enhanced susceptibility to develop an immune dysregulation following SARS-CoV-2 infection. Also the expression of ACE2, the receptor of SARS-CoV-2, varies with age, and is linked to the immune and inflammatory response through a complex, and not completely elucidated, network. This paper reviews the peculiar immunopathogenic aspects of COVID-19, with a focus on the differences between adult and pediatric patients.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:9

Enthalten in:

Immunity, inflammation and disease - 9(2021), 2 vom: 10. Juni, Seite 331-339

Sprache:

Englisch

Beteiligte Personen:

Costagliola, Giorgio [VerfasserIn]
Spada, Erika [VerfasserIn]
Consolini, Rita [VerfasserIn]

Links:

Volltext

Themen:

ACE2
ACE2 protein, human
Angiotensin-Converting Enzyme 2
Children
Comparative Study
Coronavirus
Cytokine storm
EC 3.4.17.23
Immune dysregulation
Journal Article
Multisystem inflammatory syndrome in children (MIS-C)
Receptors, Virus
Review

Anmerkungen:

Date Completed 21.05.2021

Date Revised 05.10.2022

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1002/iid3.404

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM321265904