Taipei Medical University

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Liao CH
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------>journal_name=Molecular Carcinog.
------>paper_name=Suppression of inducible nitric oxide synthase and cyclooxygenase-2 in downregulating nuclear factor-kappa B pathway by Garcinol.
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------>fullAbstract=Garcinol is a polyisoprenylated benzophenone derivative of Garcinia indica fruit rind and other species. Recent studies have demonstrated that garcinol exhibited antioxidative effects in vitro. In this study, we found that garcinol inhibited the expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) in lipopolysaccharide (LPS)-activated macrophages. Western blot analyzes and gel-shift assays revealed that garcinol strongly blocks the activation of eukaryotic transcription factor nuclear factor-kappa B (NF-kappa B)-induced by LPS. Moreover, transient transfection experiments showed that garcinol inhibited the NF-kappa B-dependent transcriptional activity. Based on these data, we demonstrated that inhibition of LPS-induced NF-kappa B activation occurred through suppressing the phosphorylation of I kappa B alpha and p38 mitogen-activated kinase (MAPK). Garcinol also lowers the LPS-induced increase of intracellular reactive oxygen species (ROS), which contributes to the activation of NF-kappa B. The NF-kappa B signaling pathway leads to inflammatory reaction and our results suggest that garcinol suppresses the expression of iNOS in this pathway.
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------>authors2=Sang S
------>authors3=Liang YC
------>authors4=Ho CT
------>authors5=Lin JK
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------>authors=Liao CH
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------>updateTitle=Suppression of inducible nitric oxide synthase and cyclooxygenase-2 in downregulating nuclear factor-kappa B pathway by Garcinol.
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------>publish_year=2004
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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z