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Mucosal immunity in health care workers’ respiratory tracts in the post-COVID-19 period

Coronavirus disease (COVID-19) has generated interest in the assessment of systemic immune status, but existing knowledge about mucosal immunity is clearly insufficient to understand the full pathogenetic mechanisms of the disease. The aim of this study was to evaluate the long-term effects of novel...

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Published in:Scientific reports 2023-05, Vol.13 (1), p.7162-7162, Article 7162
Main Authors: Kryukova, Nadezhda, Baranova, Irina, Abramova, Natalia, Khromova, Ekaterina, Pachomov, Dmitry, Svitich, Oksana, Chuchalin, Alexander, Kostinov, Mikhail
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container_title Scientific reports
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creator Kryukova, Nadezhda
Baranova, Irina
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Kostinov, Mikhail
description Coronavirus disease (COVID-19) has generated interest in the assessment of systemic immune status, but existing knowledge about mucosal immunity is clearly insufficient to understand the full pathogenetic mechanisms of the disease. The aim of this study was to evaluate the long-term effects of novel coronavirus infection on mucosal immunity in the postinfection period among health care workers (HCWs). A total of 180 health care workers with and without a history of COVID-19 who ranged in age from 18 to 65 years were enrolled in this one-stage, cross-sectional study. The study subjects completed the 36-Item Short Form (36) Health Survey (SF-36) and the Fatigue Assessment Scale. Secretory immunoglobulin A (sIgA) and total immunoglobulin G (IgG) levels were quantified in saliva samples, induced sputum samples, and nasopharyngeal and oropharyngeal scrapings by an enzyme-linked immunosorbent assay. Specific anti-SARS-CoV-2 IgG antibodies were quantified in serum samples by chemiluminescence immunoassay. Analysis of the questionnaire data showed that all HCWs with a history of COVID-19 reported health problems that limited their daily activities and negative changes in their emotional health three months after the disease, regardless of its severity. The following shifts were detected in the adaptive arm of the immune response in different mucosal compartments. Among subjects who had severe or moderate-to-severe COVID-19, salivary sIgA levels were significantly higher than those in the control group ( p  
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Analysis of the questionnaire data showed that all HCWs with a history of COVID-19 reported health problems that limited their daily activities and negative changes in their emotional health three months after the disease, regardless of its severity. The following shifts were detected in the adaptive arm of the immune response in different mucosal compartments. Among subjects who had severe or moderate-to-severe COVID-19, salivary sIgA levels were significantly higher than those in the control group ( p  &lt; 0.05 and p  &lt; 0.005, respectively). Compared to the subjects in the control group, all subjects with prior COVID-19 had significantly higher levels of total IgG in induced sputum. In the group of patients who had had severe infection, total IgG in saliva was also higher ( p  &lt; 0.05). 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subjects 631/250
631/250/2152
631/250/254
631/250/347
Adult
Antibodies, Viral - analysis
Chemiluminescence
Coronaviruses
COVID-19
COVID-19 - immunology
COVID-19 - pathology
COVID-19 - physiopathology
Enzyme-linked immunosorbent assay
Fatigue
Health care
Health Personnel
Health problems
Humanities and Social Sciences
Humans
Immune response
Immune response (humoral)
Immune status
Immunity (Disease)
Immunity, Mucosal
Immunoglobulin A
Immunoglobulin A - analysis
Immunoglobulin G
Immunoglobulin G - analysis
Immunoglobulins
Long-term effects
Medical personnel
Middle Aged
Mucosal immunity
multidisciplinary
Respiratory System - immunology
Respiratory tract
Russia
Saliva
SARS-CoV-2 - physiology
Science
Science (multidisciplinary)
Severe acute respiratory syndrome coronavirus 2
Severity of Illness Index
Sputum
Statistical analysis
Young Adult
title Mucosal immunity in health care workers’ respiratory tracts in the post-COVID-19 period
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