*2.5.2 ECM remodelling*

Extra cellular matrix is a molecular network consisting of glycol conjugates, proteins, glycosaminoglycans and adhesive receptors that associate with each other and forms frame network, where cells reside on them [68]. The ECM frame work is present in all tissues it continuously shifts in quantitative and qualitative terms on a daily basis. In case of myocytes ECM is essential for attachment, alignment and orientation facilities the cellular contractions in myocytes. Changes in the ECM of the heart found in DOX treatments, the symptoms of DOX are related to the activation of the Membrane Metalloproteinase enzymes MMP-2 & 9 in 4 weeks of treatment [69]. Changes in MMP-2 activate the Akt channels; suppress the superoxide dismutase enzyme, which raises the amount of superoxide levels, and induce caspase-3 and all other agents together promote remodelling and apoptosis [70].
