SERPINH1 and Peritoneal Fibrosis: In support of this proposal, HSP47 inhibition by antisense oligodeoxynucleotides obviously suppresses collagen production in 3 T6 cells [23], experimental proliferative glomerulonephritis [31] and in peritoneal fibrosis [32], indicating that HSP47 is a promising target for the treatment of fibrotic diseases including IPF.