Charles Santhanaraju Vairappan, and Kamada, Takashi and Won, Woo Lee and You , Jin Jeon (2013) Anti-inflammatory activity of halogenated secondary metabolites of Laurencia snackeyi (Weber-van Bosse) Masuda in LPS-stimulated RAW 264.7 macrophages. Journal of Applied Phycology , 25 (6). pp. 1805-1813. ISSN 0921-8971
Official URL: http://link.springer.com/article/10.1007/s10811-01...
Secondary metabolites of tropical seaweed are proven to exhibit variety of biological activities. Six species of seaweed (Caulerpa racemosa var. laete-virens, Caulerpa sertularioides f. longipes, Halymenia dilatata, Laurencia snackeyi, Padina boryana, and Sargassum swartzii) were tested for anti-inflammatory activity in lipopolysaccharide (LPS)-stimulated RAW 264.7 cells. Crude L. snackeyi extract exhibit potent activity, and upon bioassay-guided isolation, it contained four halogenated compounds that exert profound inhibitory effects against nitric oxide (NO) production in LPS-stimulated RAW 264.7 cells. These compounds were subjected to spectroscopic measurements and were identified as palisadin A (1), aplysistatin (2), 5-acetoxypalisadin B (3), and palisol (4). Further experiments showed aplysistatin (2) to significantly inhibit NO production and prostaglandin-E2 (PGE2) production, and suppress inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) expression in LPS-stimulated RAW 264.7 cells. Therefore, aplysistatin (2) is suggested to inhibit NO and PGE2 production via the inhibition of iNOS and COX-2, indicating that its activity may be attributed to the modulation of anti-inflammatory agents.
|Uncontrolled Keywords:||Seaweed, Laurencia snackeyi, Halogenated metabolites, Anti-inflammatory|
|Subjects:||Q Science > QH Natural history > QH301 Biology|
|Divisions:||SCHOOL > Institute for Tropical Biology and Conservation|
|Deposited By:||IR Admin|
|Deposited On:||15 Nov 2013 11:51|
|Last Modified:||17 Feb 2015 13:03|
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