Figure 1From: Muscle atrophy induced by SOD1G93A expression does not involve the activation of caspase in the absence of denervationCaspase expression and activity are selectively upregulated in atrophic muscle of SOD1G93A mice at paralysis stage. (A) Representative Western blot analysis using caspase-3 antibody (top) and cleaved caspase-3 antibody (bottom) in wild-type (WT) (lane 1), myosin light chain (MLC)/SOD1G93A (lane 2) and SOD1G93A (lane 4) transgenic muscle. Cnt+ represents the positive control (HeLa cells treated with staurosporin) for cleaved caspase-3. Immunoblotting for α-tubulin served as a control for protein loading. (B and C) Analysis (n = 5) of (B) caspase-1 and (C)caspase-3 activity on WT, MLC/SOD1G93A and SOD1G93A transgenic mice. *P < 0.05. Mean values ± SEM for caspase-1: WT = 1.055 ± 0.03, MLC/SOD1G93A = 0.908 ± 0.10 and SOD1G93A = 2.385 ± 0.10. Mean values ± SEM for caspase-3: WT = 1.01 ± 0.01, MLC/SOD1G93A = 0.75 ± 0.18 and SOD1G93A = 1.56 ± 0.07.Back to article page