PPARG and Peritoneal Fibrosis: As abnormal expression of AQP-1 and ZO-1 leads to degenerated function of the peritoneum, and abnormal expression of PPAR-γ is related to peritoneal fibrosis and neoangiogenesis, we determined the effect of rosiglitazone on the expression of AQP–1, ZO-1, and PPAR-γ.