Diverging patterns in innate immunity against respiratory viruses during a lifetime: lessons from the young and the old

被引:0
|
作者
Smits, Hermelijn H. [1 ]
Jochems, Simon P. [1 ]
机构
[1] Leiden Univ M, Leiden Univ Ctr Infect Dis LU CID, Med Ctr, Leiden, Netherlands
来源
EUROPEAN RESPIRATORY REVIEW | 2024年 / 33卷 / 172期
关键词
INVARIANT T-CELLS; COMMUNITY-ACQUIRED PNEUMONIA; TRACT INFECTIONS; INFLUENZA-VIRUS; SARS-COV-2; INFECTION; BACTERIAL EXTRACTS; MUCOUS METAPLASIA; DENDRITIC CELLS; GUT MICROBIOTA; HOST RESPONSE;
D O I
10.1183/16000617.0266-2023
中图分类号
R56 [呼吸系及胸部疾病];
学科分类号
摘要
Respiratory viral infections frequently lead to severe respiratory disease, particularly in vulnerable populations such as young children, individuals with chronic lung conditions and older adults, resulting in hospitalisation and, in some cases, fatalities. The innate immune system plays a crucial role in monitoring for, and initiating responses to, viruses, maintaining a state of preparedness through the constant expression of antimicrobial defence molecules. Throughout the course of infection, innate immunity remains actively involved, contributing to viral clearance and damage control, with pivotal contributions from airway epithelial cells and resident and newly recruited immune cells. In instances where viral infections persist or are not effectively eliminated, innate immune components prominently contribute to the resulting pathophysiological consequences. Even though both young children and older adults are susceptible to severe respiratory disease caused by various respiratory viruses, the underlying mechanisms may differ significantly. Children face the challenge of developing and maturing their immunity, while older adults contend with issues such as immune senescence and inflammaging. This review aims to compare the innate immune responses in respiratory viral infections across both age groups, identifying common central hubs that could serve as promising targets for innovative therapeutic and preventive strategies, despite the apparent differences in underlying mechanisms.
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页数:19
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