| Suppressive Effect on Lipopolysaccharide-Induced Proinflammatory Mediators by Citrus aurantium L. in Macrophage RAW 264.7 Cells via NF-κB Signal Pathway. | |
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MedLine Citation:
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PMID: 20953420 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Citrus fruits have been used as an edible fruit and a traditional medicine since ancient times. In particular, the peels of immature citrus fruits are used widely in traditional herbal medicine in Korea, as they are believed to contain bioactive components exerting anti-inflammatory activity. This study examined whether the crude methanol extract of Citrus aurantium L. (CME) has a suppressive effect on inducible enzymes and proinflammatory cytokines by inhibiting the NF-κB pathway in LPS-stimulated macrophage RAW 264.7 cells. The cells were pretreated with the indicated concentrations of CME (5, 10, 20, and 50 μg/mL) and then treated with LPS (1 μg/mL). The results showed that CME (10, 20, and 50 μg/mL) inhibited the LPS- (1 μg/mL) induced mRNA and protein expression of iNOS in macrophage Raw 264.7 cells. In addition, the expression of COX-2 was inhibited at the mRNA and protein levels by CME in a dose-dependent manner. The mRNA expression of proinflammatory cytokines, such as TNF-α and IL-6, were markedly reduced by CME (10, 20, and 50 μg/mL). Moreover, CME clearly suppressed the nuclear translocation of the NF-κB p65 subunits, which was correlated with its inhibitory effect on I-κB phosphorylation. These results suggest that CME has anti-inflammatory properties by modulating the expression of COX-2, iNOS, and proinflammatory cytokines, such as TNF-α and IL-6, in macrophage RAW 264.7 cells via the NF-κB pathway. |
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Authors:
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Sang-Rim Kang; Dae-Yong Han; Kwang-Il Park; Hyeon-Soo Park; Yong-Bae Cho; Hu-Jang Lee; Won-Sup Lee; Chung Ho Ryu; Yeong Lae Ha; Do Hoon Lee; Jin A Kim; Gon-Sup Kim |
Publication Detail:
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Type: Journal Article Date: 2010-09-21 |
Journal Detail:
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Title: Evidence-based complementary and alternative medicine : eCAM Volume: 2011 ISSN: 1741-4288 ISO Abbreviation: Evid Based Complement Alternat Med Publication Date: 2011 |
Date Detail:
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Created Date: 2010-10-18 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101215021 Medline TA: Evid Based Complement Alternat Med Country: England |
Other Details:
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Languages: eng Pagination: - Citation Subset: - |
Affiliation:
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Institute of Life Science and College of Veterinary Medicine, Gyeongsang National University, Gazwa, Jinju 660-701, Republic of Korea. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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