A composition comprising Polyhydroxyurethanes, Glycosaminoglycans, hydrolysed glycosaminoglycans, glycosamines of glycosaminoglycans, chemically modified or not and a Protein or a peptide； said protein being collagen, elastin, keratin, fibronectin, actin, myosin, laminin, a peptide or a blend of those proteins or peptides, fibrillated, hydrolysed, chemically modified or not. This homogenous composition is obtained by the polymerisation or the covalent bounding of two preparations containing cyclic polycarbonates, polyamines, glycosaminoglycans, hydrolysed glycosaminoglycans, glycosamines, chemically modified or not and proteins or peptides or a blend of those proteins or peptides, fibrillated, hydrolysed, chemically modified or not.
