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Abstract Title:

Dietary litchi pulp polysaccharides could enhance immunomodulatory and antioxidant effects in mice.

Abstract Source:

Int J Biol Macromol. 2016 Nov ;92:1067-1073. Epub 2016 Aug 8. PMID: 27514443

Abstract Author(s):

Fei Huang, Ruifen Zhang, Yang Liu, Juan Xiao, Lei Liu, Zhencheng Wei, Yang Yi, Mingwei Zhang, Dong Liu

Article Affiliation:

Fei Huang

Abstract:

The purpose of this study was to investigate the immunomodulatory and antioxidant activities of litchi pulp polysaccharides (LP) in cyclophosphamide (Cy)-induced mice. The administration of LP (50, 100 and 200mg/kg/d) remarkably enhanced mesenteric lymph node cells proliferation and serum IgA. Moreover, IL-6, TNF-α, IgG and IgM levels in serum were significantly improved in a dose-dependent manner with LP treatment. Dietary LP induced systemic immune responses including stimulating the proliferation of splenocytes, balancing the ratio of spleen lymphocyte subsets, up-regulating the thymus and spleen indices. Thus, we speculate litchi polysaccharides would express their systemic immunomodulatory effects by triggering the intestinal mucosal immunity. Likewise, LP also significantly increased total antioxidant capacity, as well as superoxidase dismutase and glutathione peroxidase activity, while decreasing malondialdehyde levels in the serum and liver. The immunomodulatory activity of LP was accompanied with its antioxidant activity, which might be related with its structure and prebiotic effect. This is a novel study on the relationship between the immunomodulatory and antioxidant activities of litchi polysaccharides.

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