CAV1 and Myocardial fibrosis: Strong negative correlations between Cav-1 and Hsp47 were very recently reported in myocardial fibrosis.42 Injections of a peptide containing the Cav-1 scaffolding domain led to reversing of Cav-1 deficiency in the tissue and to a significant reduction of expression levels of Col1 and the collagen chaperone Hsp47.