Abstract

Antioxidant and anti-inflammatory activities of methanolic extract of Clerodendrum cyrtophyllum Turcz (ECT) were investigated in the present study. ECT showed high phenolic content (223 μg·GAE−1 equivalent) and strong 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging (IC50 = 52.74 μg·mL−1) and reduced power ability. Furthermore, ECT exhibited significant protective ability in H2O2/Fe3+ /ascorbic acid-induced DNA and protein damage. Moreover, ECT inhibited NO production by 47.15% at 0.8 mg·mL−1 in lipopolysaccharides-stimulated RAW264.7 macrophages. Semi-quantitative reverse transcription polymerase chain reaction (RT-PCR) analysis showed that the expression of iNOS and COX-2 in RAW264.7 cells was down-regulated after treatment with increasing concentration of ECT. In conclusion, ECT has shown potent antioxidant and anti-inflammatory activities could be considered as a source of health promoting antioxidant and complementary medicinal supplement.

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