Effects of vitamin A on the immune function of intestinal mucosa lymphocytes in mice

YANG Ling-Yun; CHU Bo; JIANG Li-Rong

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Chinese Journal of Contemporary Pediatrics ›› 2010, Vol. 12 ›› Issue (12) : 976-978.

EXPERIMENTAL RESEARCH

Effects of vitamin A on the immune function of intestinal mucosa lymphocytes in mice

YANG Ling-Yun, CHU Bo, JIANG Li-Rong

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Abstract

OBJECTIVE: To study the effects of vitamin A on the development of T lymphocytes in peripheral blood and small intestine and on the cytokine response of intestinal mucosa in mice. METHODS: Twenty young mice were randomly fed with forage containing vitamin A 250 or 4 IU/g (n=10 each). Three weeks later, the levels of CD4+ CD25+ T subsets in peripheral blood and intestinal mucosa were measured by flow cytometry. The levels of cytokines IFN-γ, IL-4, IL-17 and IL-23 in stool were measured using ELISA. RESULTS: The levels of CD4+ CD25+ T subsets in peripheral blood and intestinal mucosa in the 250 IU/g vitamin A group were significantly higher than those in the 4 IU/g vitamin A group (P<0.05). The IL-4 level in stool increased, in contrast, the IL-23 level in stool decreased significantly in the 250 IU/g vitamin A group when compared with the 4 IU/g vitamin A group (P<0.05). CONCLUSIONS: vitamin A may promote the development of CD4+ CD25+ T lymphocytes in peripheral blood and small intestine. Moreover, it may be involved in intestinal mucosa-associated immune response by regulating cytokines IL-4 and IL-23.［Chin J Contemp Pediatr, 2010, 12 (12):976-978］

Key words

Vitamin A / Mucosa immunity / Regulatory T cell / Cytokine / Mice

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YANG Ling-Yun, CHU Bo, JIANG Li-Rong. Effects of vitamin A on the immune function of intestinal mucosa lymphocytes in mice[J]. Chinese Journal of Contemporary Pediatrics. 2010, 12(12): 976-978

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