Background: Primary diagnosis of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection is based on detection of virus RNA in nasopharyngeal swab samples. In addition, analysis of humoral immunity against SARS-CoV-2 has an important role in viral diagnostics and seroprevalence estimates.
Methods: We developed and optimized an enzyme immunoassays (EIA) using SARS-CoV-2 nucleoprotein (N), S1 and receptor binding domain (RBD) of the viral spike protein, and N proteins from SARS, Middle East respiratory syndrome (MERS), and 4 low-pathogenic human CoVs. Neutralizing antibody activity was compared with SARS-CoV-2 IgG, IgA, and IgM EIA results.
Results: The sensitivity of EIA for detecting immune response in COVID-19 patients (n = 101) was 77% in the acute phase and 100% in the convalescent phase of SARS-CoV-2 infection when N and RBD were used as antigens in IgG and IgA specific EIAs. SARS-CoV-2 infection significantly increased humoral immune responses against the 229E and NL63 N proteins. S1 and RBD-based EIA results had a strong correlation with microneutralization test results.
Conclusions: The data indicate a combination of SARS-CoV-2 S1 or RBD and N proteins and analysis of IgG and IgA immunoglobulin classes in sera provide an excellent basis for specific and sensitive serological diagnostics of COVID-19.
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http://dx.doi.org/10.1093/infdis/jiab222 | DOI Listing |
Am J Ther
November 2024
Department of Lymphatic Oncology, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Third Hospital of Shanxi Medical University, Tongji Shanxi Hospital, Taiyuan, China.
Best Pract Res Clin Anaesthesiol
March 2024
Department of Surgery, Universitat de València, 46010 València, Spain; Ivano-Frankivsk National Medical University, 76018 Ivano-Frankivsk, Ukraine.
Health care workers are at risk of infection from aerosolization of respiratory secretions, droplet and contact spread. This has gained great importance after the COVID19 pandemic. Intra-operative aerosol-generating procedures are arguably unavoidable in the routine provision of thoracic anesthesia.
View Article and Find Full Text PDFBest Pract Res Clin Anaesthesiol
September 2024
Department of Anaesthesiology, University Hospitals Leuven (BE), Department of Cardiovascular Sciences, KU Leuven (BE), Herestraat 49, B-3000, Leuven, Belgium.
Critical illness during pregnancy poses significant challenges driven by complex interactions between physiological changes, pre-existing conditions, and healthcare disparities. In high-income countries, increasing maternal age and comorbidities complicate obstetric care by triggering an unprecedented rise in cardiac disease during pregnancy, while infections like influenza and COVID-19 are important causes of maternal adult respiratory distress syndrome. Extracorporeal membrane oxygenation (ECMO) gained prominence as a vital intervention, providing respiratory and/or cardiac support, for varying indications between antenatal and postpartum periods.
View Article and Find Full Text PDFJ Health Psychol
January 2025
Key Laboratory of Human Development and Mental Health of Hubei Province, School of Psychology, Central China Normal University, Wuhan, China.
Despite numerous studies observing a positive correlation between family resilience and psychological well-being during the COVID-19 pandemic, the strength of this association varied considerably in previous research. This study aims to obtain reliable estimates for effect sizes and investigate the potential moderators of the association between family resilience and psychological well-being during the COVID-19 pandemic. Seventeen studies (65 effect sizes, 14,511 participants) were reviewed using a systematic literature search and the PRISMA approach.
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