1. Anti-inflammatory effects of green soybean extract irradiated with visible light.
- Author
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Tanaka K, Ohgo Y, Katayanagi Y, Yasui K, Hiramoto S, Ikemoto H, Nakata Y, Miyoshi N, Isemura M, Ohashi N, and Imai S
- Subjects
- Animals, Anti-Inflammatory Agents chemistry, Cytokines metabolism, Dermatitis, Atopic drug therapy, Disease Models, Animal, Humans, Inflammation Mediators metabolism, Interleukin-2 biosynthesis, Jurkat Cells, MAP Kinase Signaling System drug effects, Male, Mice, Plant Extracts chemistry, Anti-Inflammatory Agents pharmacology, Anti-Inflammatory Agents radiation effects, Light, Plant Extracts pharmacology, Plant Extracts radiation effects, Glycine max chemistry
- Abstract
We conducted a preliminary investigation of the effects of visible light irradiation on plant extracts, and we observed a strong suppressive effect on interleukin (IL) 2 expression with the inhibition of c-Jun amino-terminal kinase (JNK) phosphorylation in Jurkat cells by visible light irradiation to ethanol extract from green soybeans (LIEGS). This effect was produced only by extracts from green soybeans (Glycine max) and not other-color soybeans. LIEGS suppressed the lipopolysaccharide-induced IL-6, IL-12 and TNF-α expression levels in human monocyte THP-1 cells in a concentration-dependent manner. LIEGS was applied for 8 weeks to NC/Nga mice. LIEGS suppressed the development of atopic dermatitis (AD)-like skin lesions and reduced the dermatitis scores of the mice. The light irradiation changed the various types of small-molecule compounds in extracts. Visible light irradiation to daidzein with chlorophyll b induced a novel oxidative product of daidzein. This product suppressed IL-2 expression in Jurkat cells.
- Published
- 2014
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