KMID : 0545120200300040490
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Journal of Microbiology and Biotechnology 2020 Volume.30 No. 4 p.490 ~ p.496
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Croton hirtus L'Her Extract Prevents Inflammation in RAW264.7 Macrophages Via Inhibition of NF-¥êB Signaling Pathway
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Kim Min-Jeong
Kim Ju-Gyeong Sydara Kong Many Lee Sang-Woo Jung Sung-Keun
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Abstract
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Consumption of anti-inflammatory nutraceuticals may help treat or prevent inflammation-related illnesses such as diabetes, cardiovascular disease, and cancer. This study evaluated the effect of Croton hirtus L'Her extract (CHE) on lipopolysaccharide (LPS)-induced nitric oxide (NO) production and nuclear factor kappa-B (NF-¥êB) signaling cascades. CHE significantly suppressed LPS-induced NO production and inducible nitric oxide synthase (iNOS) expression in RAW264.7 macrophages, although cyclooxygenase (COX)-2 expression was not affected. CHE also suppressed LPS-induced I¥êB kinase (IKK), I¥êB, and p65 phosphorylation in RAW264.7 cells. Western blot and immunofluorescence assays of cytosol and nuclear p65 and the catalytic subunit of NF-¥êB showed that CHE suppressed LPS-induced p65 translocation from the cytosol to the nucleus. CHE also suppressed LPS-induced Interleukin (IL)-6 and tumor necrosis factor (TNF)-¥á production in RAW264.7 cells. These results suggest that CHE prevents NO-mediated inflammation by suppressing NF-¥êB and inflammatory cytokines..
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KEYWORD
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Croton hirtus L, inflammation, NF-¥êB, nutraceuticals, macrophage, nitric oxide
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