Increased circulating b-amyloid and decreased Mitochondrial-derived peptide (MOTS-c), a peptide improving tissue insulin sensitivity, are reported in diabetes. The investigators plan to investigate the association of both biofactors with high on-clopidogrel platelet reactivity and cardiovascular mortality in type 2 diabetic patients with Coronary artery disease

In type II diabetic patients with Coronary artery disease treated with clopidogrel and aspirin, the investigators plan to measure: i. maximum platelet aggregation to adenosine diphosphate (ADP) by Light Transmission Aggregometry (LTAmax), as a marker of on-clopidogrel treatment platelet reactivity ii. Malondialdehyde (MDA), as oxidative stress marker, Mitochondrial-derived peptide MOTS-c and b-amyloid. blood levels.