ArticlePloS one2026
Association of visceral fat and plasmacytoid dendritic cell-derived interferon alpha with SARS-CoV-2 infection.
Article in PloS one, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
8 authors.
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Abstract
Type I interferon (IFN-I: IFNα/β) production by plasmacytoid dendritic cells (pDCs) is critical for controlling viral infections. Visceral fat obesity is associated with severe outcomes in viral infections, but its effect on pDC-mediated IFN-I production in the context of SARS-CoV-2 infection remains unclear. This cross-sectional study evaluated cytokine production by blood pDCs in response to TLR7/8 stimulation and analyzed its association with visceral fat area (VFA). IFN-I production was exclusively observed in pDCs following TLR7/8 stimulation. The proportion of IFNα-positive pDCs (pDC-IFNα) was significantly lower in individuals with high VFA (above the median) and negatively correlated with VFA (r = -0.27, P < 0.001). Logistic regression revealed that high VFA or low pDC-IFNα levels (below the median) were independently associated with a history of SARS-CoV-2 infection. Moreover, individuals with both high VFA and low pDC-IFNα levels had significantly higher odds of infection compared to those with low VFA and high pDC-IFNα levels. These findings suggest a potential relationship between VFA and impaired pDC function, which may influence susceptibility to SARS-CoV-2 infection. Managing VFA and enhancing pDC responses might represent strategies to reduce infection risk in individuals with visceral fat obesity.
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