We previously reported peritoneal fibrosis (PF) induced by chlorhexidine (CH) was significantly suppressed in PF rats with AST supplemented diet, and the level of 8-hydroxy-2'-deoxyguanosine (8-OHdG) and cytokine such as TNFα and TGFβ were suppressed in the peritoneum[11]. This evidence concerns the gene TNF and pemphigus foliaceus.