... investigating the putative vasoactiveproperties of human cathepsins K and LClaire Desmazes 1 , Laurent Galineau 1 , Francis Gauthier 1 , Dieter Bro¨ mme2 and Gilles Lalmanach 1 1Laboratoire ... increase microvascularpermeability and modulate the release of histamine,prostaglandine E2, superoxide radicals and pro-inflamma-tory cytokines, IL -1 and TNF -a [4–7]. Since the character-ization ... [28]. Samples: lane 1, hK1; lane 2, hK1/HMWK (molar ratio, 0 .1) ; lane 3, hK1/HMWK (molar ratio, 0. 01) ; lane 4, HMWK; lane 5,cathepsin L/HMWK (molar ratio, 2); lane 6, cathepsin L/HMWK (molar ratio,...