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Impact of COVID-19 vaccination on saliva immune barriers: IgA, lysozyme, and lactoferrin

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Abstract

Understanding the role of salivary constituents, such as lactoferrin, lysozyme, and secretory immunoglobulin A (sIgA), in immune protection and defense mechanisms against microbial invasion and colonization of the airways is important in light of the ongoing severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic. The salivary immune barrier in individuals affected by COVID-19 may contribute to disease prognosis. Thus, the aim of the present review is to evaluate the effect of COVID-19 vaccines on the immunological composition of saliva. IgA antibodies generated by vaccination can neutralize the virus at mucosal surfaces, whereas antimicrobial peptides, such as lysozyme and lactoferrin, have broad-spectrum antimicrobial activity. Collectively, these components contribute to the protective immune response of the oral cavity and may help minimize viral transmission as well as the severity of COVID-19. Measuring the levels of these components in the saliva of COVID-19-vaccinated individuals can help in evaluating the vaccine's ability to induce mucosal immunity, and it might also provide insights into whether saliva can be used in diagnostics or surveillance for monitoring immune responses following vaccination. This also has implications for viral transmission.

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The data that support the findings of this study are available from the corresponding author.

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Funding

University of Basrah, 2023.

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Authors and Affiliations

  1. Biology Department, College of Science University of Basrah, Basrah, 61001, Iraq

    Hanadi H. Abdul-Kareem, Marwan Y. Al-Maqtoofi & Ahmed A. Burghal

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  1. Hanadi H. Abdul-Kareem
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  2. Marwan Y. Al-Maqtoofi
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Correspondence to Marwan Y. Al-Maqtoofi.

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Abdul-Kareem, H.H., Al-Maqtoofi, M.Y. & Burghal, A.A. Impact of COVID-19 vaccination on saliva immune barriers: IgA, lysozyme, and lactoferrin. Arch Virol 168, 293 (2023). https://doi.org/10.1007/s00705-023-05914-3

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