Evaluation of vitamin D status, vitamin D receptor expression, and innate immune mediators in COVID-19.

What Was Tested

Researchers studied Vitamin D, K2, Magnesium and Zinc in this observational study publication.

The Coronavirus disease 2019 (COVID-19) pandemic underscored the importance of identifying host factors that influence susceptibility to infection.

Vitamin D signaling, mediated via its receptor (VDR), along with innate immune mediators such as antimicrobial peptides (e.g., DEFA1-3) and inflammatory chemokines (e.g., CCL20), plays a critical role in antiviral defense.

This study aimed to determine how serum vitamin D status and gene expression of VDR, DEFA1-3, and CCL20 associate with COVID-19 risk in a Lebanese cohort.

Who Took Part

The abstract describes 264 patients taking part.

PubMed indexes the participants as adults, middle-aged adults and older adults, both men and women.

This prospective observational study assessed serum vitamin D concentrations and nasopharyngeal gene expression in Lebanese participants tested for SARS-CoV-2 between January and March 2024.

The researchers enrolled 264 patients undergoing RT-qPCR (targeting ORF1, N, and E genes) and quantified serum 25-hydroxyvitamin D [25(OH)D].

How the Study Was Run

In a subset of 70 individuals stratified by COVID-19 status, the researchers measured VDR, DEFA1-3, CCL20, and GAPDH expression by RT-qPCR.

Multiple logistic regression and Pearson correlation analyses were performed.

What Was Measured

The subject headings attached to it are COVID-19, Vitamin D, Receptors, Calcitriol, Immunity, Innate, SARS-CoV-2, Chemokine CCL20 and alpha-Defensins.

Author keywords: VDR, inflammatory biomarkers and innate immunity.

What This Means in Plain Language

This is an observational study of Vitamin D, K2, Magnesium and Zinc in 264 patients.

Results are reported in around 6 sentences of the abstract; we leave them to the paper itself rather than summarise them.

The publication is from 2025 (Frontiers in endocrinology), a journal based in Switzerland.

More context: the Vitamin D, K2, Magnesium and Zinc compound page, all human trials.