“…A variety of hypotheses were proposed, including reactive metabolite formation and accumulation, mitochondrial dysfunction and oxidative stress, inhibition of bile salt exporter pump, and apoptosis (Chojkier, 2005;Masubuchi, 2006). The major TGZ metabolites (sulfate, glucuronide, quinone) have been identified in cultured cells, experimental animals, and human patients (Kawai et al, 1997;Loi et al, 1999;Yoshigae et al, 2000;Honma et al, 2002;Watanabe et al, 2002).…”