Broussochalcone A, a potent antioxidant and effective suppressor of inducible nitric oxide synthase in lipopolysaccharide-activated macrophages11Abbreviations: NF-κB, nuclear factor-κB; NO, nitric oxide; NOS, nitric oxide synthase; iNOS, inducible NOS; BCA, broussochalcone A; BHT, butylated hydroxytoluene; DPPH, diphenyl-2-picrylhydrazyl; L-NAME, NG-nitro-l-arginine methyl ester; LPS, lipopolysaccharide; MDA, malondialdyhyde; PDTC, pyrrolidine dithiocarbamate; TBARS, thiobarbituric acid-reactive substances; PMSF, phenylmethylsulfonyl fluoride; and DTT, dithiothreitol.