Abstract |
Vitamin D is a fat-soluble vitamin that is metabolized by the liver into 25-hydroxyvitamin D [25( OH)D] and then by the kidney into 1,25-dihydroxyvitamin D [1,25( OH)2D], which activates the vitamin D receptor expressed in various cells, including immune cells, for an overall immunostimulatory effect. Here, to investigate whether oral supplementation of 25-hydroxyvitamin D3 [25( OH)D3], a major form of vitamin D metabolite 25( OH)D, has a prophylactic effect on influenza A virus infection, mice were fed a diet containing a high dose of 25( OH)D3 and were challenged with the influenza virus. In the lungs of 25(OH)D3-fed mice, the viral titers were significantly lower than in the lungs of standardly fed mice. Additionally, the proinflammatory cytokines IL-5 and IFN-γ were significantly downregulated after viral infection in 25(OH)D3-fed mice, while anti-inflammatory cytokines were not significantly upregulated. These results indicate that 25( OH)D3 suppresses the production of inflammatory cytokines and reduces virus replication and clinical manifestations of influenza virus infection in a mouse model.
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Authors | Hirotaka Hayashi, Masatoshi Okamatsu, Honami Ogasawara, Naoko Tsugawa, Norikazu Isoda, Keita Matsuno, Yoshihiro Sakoda |
Journal | Nutrients
(Nutrients)
Vol. 12
Issue 7
(Jul 05 2020)
ISSN: 2072-6643 [Electronic] Switzerland |
PMID | 32635656
(Publication Type: Journal Article)
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Chemical References |
- Cytokines
- IFNG protein, mouse
- Interleukin-5
- Vitamins
- Interferon-gamma
- Calcifediol
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Topics |
- Animals
- Calcifediol
(administration & dosage)
- Cytokines
(blood)
- Dietary Supplements
- Disease Models, Animal
- Down-Regulation
(drug effects)
- Influenza A virus
(drug effects)
- Interferon-gamma
(blood)
- Interleukin-5
(blood)
- Lung
(virology)
- Mice
- Orthomyxoviridae Infections
(blood, prevention & control, virology)
- Up-Regulation
(drug effects)
- Virus Replication
(drug effects)
- Vitamins
(administration & dosage)
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