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Food Chem. 2012 Oct 15;134(4):1906-11. doi: 10.1016/j.foodchem.2012.03.110. Epub 2012 Apr 3.

Composition analysis and immuno-modulatory effect of okra (Abelmoschus esculentus L.) extract.

Author information

1
Department of Food Science, National Pingtung University of Science and Technology, No. 1 Shuehfu Rd., Neipu, Pingtung 91201, Taiwan, ROC. ssheu@mail.npust.edu.tw

Abstract

The aim of this study was to analyse the composition of okra (Abelmoschus esculentus L.) extract and investigate the effect of A. esculentus L. polysaccharides (AE-PS) on the maturation and function of dendritic cells (DCs) derived from rat bone marrow hematopoietic cells (BMHCs) in vitro. BMHC-derived immature DCs (BMHC-imDCs) were extracted from rats and treated with AE-PS. The hydrolysed okra extract contained 0.6% β-1, 3-D-glucan. AE-PS induced the presence of polymorphic nuclei and elongated protrusion in the BHMC-imDCs, indicating DC activation. Treatment with 100 μg/mL of AE-PS increased the MHC class II and CD80/86 expression levels by 41% and 42%, respectively. Treated cells had reduced endocytosis activity. The secretion of IL-12 and IFN-γ increased significantly by 120% and 75%, respectively, when treated with 100 μg/mL of AE-PS. Moreover, IL-10 production was reduced by 66%. In conclusion, AE-PS exhibits stimulatory effects on rat dendritic cells and promotes the secretion of T(H)1 cytokines.

PMID:
23442637
DOI:
10.1016/j.foodchem.2012.03.110
[Indexed for MEDLINE]

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