The overproduction of nitric oxide (NO) and prostaglandin E-2 (PGE(2)) causes neurodegenerative diseases, such as Alzheimer's disease and Parkinson's disease. Four lignans, (+)-eudesmin (1), (+)-magnolin (2), (+)yangambin (3) and a new structure named as epimagnolin B (4) were isolated from Magnolia fargesii (Magnoliaceae) as the inhibitors of NO production in LPS-activated microglia. The most potent compound 4 inhibited the production of NO and PGE(2) and the expression of respective enzyme iNOS and COX-2 through the suppression of I-kappa B-alpha degradation and nuclear translocation of p65 subunit of NF-kappa B. (C) 2009 Published by Elsevier Ltd.
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Korea Res Inst Biosci & Biotechnol, Immunomodulator Res Lab, Taejon 305600, South KoreaKorea Res Inst Biosci & Biotechnol, Immunomodulator Res Lab, Taejon 305600, South Korea
Ahn, KS
;
Jung, KY
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Korea Res Inst Biosci & Biotechnol, Immunomodulator Res Lab, Taejon 305600, South KoreaKorea Res Inst Biosci & Biotechnol, Immunomodulator Res Lab, Taejon 305600, South Korea
Jung, KY
;
Kim, JH
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Korea Res Inst Biosci & Biotechnol, Immunomodulator Res Lab, Taejon 305600, South KoreaKorea Res Inst Biosci & Biotechnol, Immunomodulator Res Lab, Taejon 305600, South Korea
Kim, JH
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Oh, SR
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Korea Res Inst Biosci & Biotechnol, Immunomodulator Res Lab, Taejon 305600, South KoreaKorea Res Inst Biosci & Biotechnol, Immunomodulator Res Lab, Taejon 305600, South Korea
Oh, SR
;
Lee, HK
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Korea Res Inst Biosci & Biotechnol, Immunomodulator Res Lab, Taejon 305600, South KoreaKorea Res Inst Biosci & Biotechnol, Immunomodulator Res Lab, Taejon 305600, South Korea
机构:
Korea Res Inst Biosci & Biotechnol, Immunomodulator Res Lab, Taejon 305600, South KoreaKorea Res Inst Biosci & Biotechnol, Immunomodulator Res Lab, Taejon 305600, South Korea
Ahn, KS
;
Jung, KY
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Korea Res Inst Biosci & Biotechnol, Immunomodulator Res Lab, Taejon 305600, South KoreaKorea Res Inst Biosci & Biotechnol, Immunomodulator Res Lab, Taejon 305600, South Korea
Jung, KY
;
Kim, JH
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Korea Res Inst Biosci & Biotechnol, Immunomodulator Res Lab, Taejon 305600, South KoreaKorea Res Inst Biosci & Biotechnol, Immunomodulator Res Lab, Taejon 305600, South Korea
Kim, JH
;
Oh, SR
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机构:
Korea Res Inst Biosci & Biotechnol, Immunomodulator Res Lab, Taejon 305600, South KoreaKorea Res Inst Biosci & Biotechnol, Immunomodulator Res Lab, Taejon 305600, South Korea
Oh, SR
;
Lee, HK
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Korea Res Inst Biosci & Biotechnol, Immunomodulator Res Lab, Taejon 305600, South KoreaKorea Res Inst Biosci & Biotechnol, Immunomodulator Res Lab, Taejon 305600, South Korea