Planta Med 2015; 81(15): 1370-1374
DOI: 10.1055/s-0035-1557821
Biological and Pharmacological Activity
Original Papers
Georg Thieme Verlag KG Stuttgart · New York

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

Hiroko Maruyama
1   Department of Cytopathology, Graduate School of Medical Sciences, Kitasato University, Sagamihara, Japan
,
Hidekazu Tamauchi
2   Department of Biochemistry, Graduate School of Medical Sciences, Kitasato University, Sagamihara, Japan
,
Fumitaka Kawakami
3   Department of Immunology, Graduate School of Medical Sciences, Kitasato University, Sagamihara, Japan
,
Keiko Yoshinaga
4   Riken Vitamin Co., Ltd., Tokyo, Japan
,
Takahisa Nakano
4   Riken Vitamin Co., Ltd., Tokyo, Japan
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Publikationsverlauf

received 10. Februar 2015
revised 25. Juni 2015

accepted 09. Juli 2015

Publikationsdatum:
19. August 2015 (online)

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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.