Regulation of Lipopolysaccharide-Induced Inducible Nitric-Oxide Synthase Expression through the Nuclear Factor- (cid:1) B Pathway and Interferon- (cid:2) /Tyrosine Kinase 2/Janus Tyrosine Kinase 2-Signal Transducer and Activator of Transcription-1 Signaling Cascades by 2-Naphthylethyl-6,7-dihydroxy-