CXCL12 and myocardial infarction: However, infection with rAAV1-SDF-1α-eGFP significantly increased SDF-1α expression in infarcted myocardium (SDF-1α vs. MI, 2.22±0.38 vs. 1.20±0.19, p<0.01, SDF-1α vs. Empty, 2.22±0.38 vs. 1.30±0.17, p<0.01) at day 21.