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| Home > Publications database > Low sun exposure acts synergistically with high EBNA-1 antibody levels in MS etiology. |
| Home > Publications database > Low sun exposure acts synergistically with high EBNA-1 antibody levels in MS etiology. |
| Journal Article | DKFZ-2021-01957 |
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2021
Wiley-Blackwell
Oxford [u.a.]
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Please use a persistent id in citations: doi:10.1111/ene.15082
Abstract: Among multiple sclerosis (MS) patients, an association has been observed between low levels of vitamin D and high Epstein-Barr nuclear antigen 1 (EBNA-1) antibody levels. However, whether sun exposure/vitamin D moderates the role of Epstein-Barr virus infection in MS etiology is unclear. We aimed to investigate potential synergistic effects between low sun exposure and elevated EBNA-1 antibody levels regarding MS risk.We used a population-based case-control study involving 2017 incident cases of MS and 2443 matched controls. We used logistic regression models to calculate odds ratios of MS with 95% confidence intervals (CI) in subjects with different sun exposure habits and EBNA-1 status. Potential interaction on the additive scale was evaluated by calculating the attributable proportion due to interaction (AP).Low sun exposure acted synergistically with high EBNA-1 antibody levels (AP 0.2, 95% CI 0.03-0.3) in its association to increased MS risk. The interaction was present regardless of HLA-DRB1*15:01 status.Low sun exposure may either directly, or indirectly by affecting vitamin D levels, synergistically reinforce pathogenic mechanisms, such as aspects of the adaptive immune response, related to MS risk conveyed by EBV infection.
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