Research Article

Anti-Inflammatory Effect of a Polyphenol-Enriched Fraction from Acalypha wilkesiana on Lipopolysaccharide-Stimulated RAW 264.7 Macrophages and Acetaminophen-Induced Liver Injury in Mice

Figure 3

Effect of PEF on LPS-stimulated iNOS and COX-2 expression in RAW 264.7 macrophages. RAW 264.7 macrophages were preincubated with 10–200 μg/mL PEF for 2 h and then treated with 1 μg/mL LPS for 24 h. (a) The protein level of iNOS and COX-2 was determined by Western blot analysis. GAPDH was used as an endogenous control. (b) Total RNA was isolated and reverse-transcribed into cDNA for RT-PCR analysis of iNOS and COX-2 mRNA level. GAPDH was used as an endogenous control. Results are shown as the mean ± SD (). The different letters represent the statistical differences at among the groups by Tukey-Kramer’s test.
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