Cadherins are a family of transmembrane glycoproteins that mediate calcium-dependent cell-cell adhesion and play an important role in the maintenance of normal tissue architecture. N-cadherin (neural cadherin),also known as CDH2 (cadherin 2),is a classical member of the cadherin superfamily which also include E-,P-,R-,and B-cadherins. Expression of N-cadherin has been reported on various cell types including neurons,endothelial cells and cardiac myocytes . N-cadherin has functions in early brain morphogenesis,synaptogenesis and synaptic plasticity .