| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2010: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2009: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Research Abstract |
The vitamin A metabolite, retinoic acid, plays an essential role in the homing of lymphocytes to the small intestinal tissues. Retinoic acid also affects differentiation of naive CD4^+ T cells to Foxp3^+ inducible regulatory T cells and proinflammatory Th17 cells. It has been suggested thus that vitamin A might be involved in the regulation of intestinal immune balance. In the present study, we found that oral administration of antigen strongly induced T cell responses and antibody responses in vitamin A-deficient mice but not vitamin A-sufficient control mice. These results suggest that vitamin A deficiency may cause food allergy.
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