Increased myocardial collagen content in transgenic rats overexpressing cardiac angiotensin-converting enzyme is related to enhanced breakdown of N-acetyl-Ser-Asp-Lys-Pro and increased phosphorylation of Smad2/3 - Saraswati Pokharel; Peter P. Van Geel; Umesh C. Sharma; Jack P.M. Cleutjens; Holger Bohnemeier; Xiao-Li Tian; Heribert Schunkert; Harry J.G.M. Crijns; Martin Paul; Yigal M. Pinto (Circulation, 2004)