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Planta Med. 2015 Oct;81(15):1370-4. doi: 10.1055/s-0035-1557821. Epub 2015 Aug 19.

Suppressive Effect of Dietary Fucoidan on Proinflammatory Immune Response and MMP-1 Expression in UVB-Irradiated Mouse Skin.

Author information

1
Department of Cytopathology, Graduate School of Medical Sciences, Kitasato University, Sagamihara, Japan.
2
Department of Biochemistry, Graduate School of Medical Sciences, Kitasato University, Sagamihara, Japan.
3
Department of Immunology, Graduate School of Medical Sciences, Kitasato University, Sagamihara, Japan.
4
Riken Vitamin Co., Ltd., Tokyo, Japan.

Abstract

It is well known that ultraviolet B irradiation leads to dermal inflammation. In this study, we found that Mekabu fucoidan suppressed edema, decreased the thickness of the prickle cell layer, and decreased matrix metalloproteinase 1 in the skin of mice irradiated with ultraviolet B. Moreover, we found that the mean level of interferon gamma of Mekabu fucoidan-treated, ultraviolet B-irradiated mice (approximately 2.2 ng/mL) was not significantly different from that in normal mice (approximately 2.5 ng/mL). In contrast, a significant decrease in the mean level of interferon gamma (approximately 1.3 ng/mL) in ultraviolet B-irradiated control mice was observed compared with that in Mekabu fucoidan-treated, ultraviolet B-irradiated mice. The mean thickness of the prickle cell layer in the skin of Mekabu fucoidan-treated, ultraviolet B-irradiated mice was less than that in the ultraviolet B-irradiated control mice. Metalloproteinase 1 activity was significantly higher in the skin of ultraviolet B-irradiated mice than in the skin of untreated, nonirradiated normal mice. Metalloproteinase 1 in the skin of ultraviolet B-irradiated, Mekabu fucoidan- or L(+)-ascorbic acid (vitamin C)-treated mice was significantly lower than that in the ultraviolet B-irradiated control mice. Mitigation of the morphological changes in Mekabu fucoidan-treated mice was correlated with a decrease in metalloproteinase 1 levels. These data indicate that Mekabu fucoidan is an effective suppressor of inflammation in an ultraviolet B-irradiated mouse model.

PMID:
26287767
DOI:
10.1055/s-0035-1557821
[Indexed for MEDLINE]

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