Modulation of the Immune Response to Respiratory Viruses by Vitamin D
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Background: Vitamin D deficiency has been shown to be independently associated with increased risk of viral acute respiratory infection (ARI) in a number of observational studies, and meta-analysis of clinical trials of vitamin D supplementation for prevention of ARI has demonstrated protective effects. Several cellular studies have investigated the effects of vitamin D metabolites on immune responses to respiratory viruses, but syntheses of these reports are lacking.
Scope: In this article, we review the literature reporting results of in vitro experiments investigating immunomodulatory actions of vitamin D metabolites in human respiratory epithelial cells infected with respiratory viruses.
Key Findings: Vitamin D metabolites do not consistently influence replication or clearance of rhinovirus, respiratory syncytial virus (RSV) or influenza A virus in human respiratory epithelial cell culture, although they do modulate expression and secretion of type 1 interferon, chemokines including CXCL8 and CXCL10 and pro-inflammatory cytokines, such as TNF and IL-6.
Future Research: More studies are needed to clarify the effects of vitamin D metabolites on respiratory virus-induced expression of cell surface markers mediating viral entry and bacterial adhesion to respiratory epithelial cells.
Wimalawansa S Nutrients. 2025; 17(3).
PMID: 39940457 PMC: 11820523. DOI: 10.3390/nu17030599.
Vitamin D as an Adjuvant Immune Enhancer to SARS-Cov-2 Vaccine.
Salamony A, Abdelsalam M, Elguindy N, Roshdy W, Youssef A, Shamikh Y Curr Microbiol. 2025; 82(3):122.
PMID: 39918738 DOI: 10.1007/s00284-025-04095-3.
Mattioli A, Coppi F, Severino P, Penna C, Pagliaro P, Dei Cas A Nutrients. 2025; 17(1.
PMID: 39796548 PMC: 11722835. DOI: 10.3390/nu17010115.
Vitamin D deficiency and duration of COVID-19 symptoms in UK healthcare workers.
Chadda K, Roberts S, Lugg S, Faniyi A, Faustini S, Webster C Front Med (Lausanne). 2024; 11:1494129.
PMID: 39655234 PMC: 11625565. DOI: 10.3389/fmed.2024.1494129.
Hamed E, Abdelhady S, Al-Touny S, Kishk R, Mohamed M, Rageh F BMC Med Genomics. 2024; 17(1):284.
PMID: 39623417 PMC: 11613538. DOI: 10.1186/s12920-024-02018-y.