1. Introduction
Inflammation is a defense response to harmful stimuli. The
inflammatory response must be approximately terminated to prevent
tissue damage, and failure to terminate inflammation results
in chronic inflammation and cellular destruction. Chronic inflammation
can lead to a variety of diseases, such as atherosclerosis,
rheumatoid arthritis, cancer, and allergies. During the inflammatory
process, many kinds of cells are activated, and these cells secrete
various pro-inflammatory molecules, including cytokines
and nitric oxide (NO). Macrophages are essential for the host defense
system and the secretion of pro-inflammatory mediators in
response to bacterial lipopolysaccharide (LPS) (Hald et al., 2012;
Nguyen et al., 2012; Pan et al., 2008; van Rooijen and Sanders,
1997).