(E) Results of western blot analysis involving dystrophin antibodies dys1, Mandys18 and Manex46e (recognizing respectively exon 26-30, 17-35, and 46), of total protein extracts (20 µg) obtained from post-treatment biopsy specimens of Pt 01 (tibialis anterior muscle); Ct was used as positive dystrophin control. Below, bands corresponding to myosin heavy chain are shown as loading control. No bands corresponding to full length dystrophin were observed. A schematic representation of the deleted portion of the dystrophin and the region recognized by used antibodies is depicted above the western blot.(F) Results of western blot analysis involving dystrophin antibodies Mandys18 and Manex46e, of total protein extracts (10-20 µg) obtained from pre-treatment (performed at time of diagnosis) and post-treatment biopsy specimens of Pt 02 (tibialis anterior muscle); Ct was used as positive dystrophin control. Below, bands corresponding to myosin heavy chain are shown as loading control. One faint band corresponding to full length dystrophin is observed only in the post-treatment samples with both Mandys18 and Manex46e antibodies. A schematic representation of the deleted portion of the dystrophin and the region recognized by used antibodies is depicted above the western blot.(G) Results of western blot analysis involving dystrophin antibodies Mandys106 (recognizing exon 43) and dys1, of total protein extracts (80 µg, following protein concentration by Amicon Ultra-0.5 centrifugal filter devices, Millipore) obtained from pre-treatment and post-treatment biopsy specimens of Pt 05 (gastrocnemius); Ct was used as positive dystrophin control, CtDmd was used as dystrophin negative control. Below, bands corresponding to myosin heavy chain are shown as loading control. Bands corresponding approximately to full length dystrophin are observed in pre and post-treatment samples with both antibodies However, bands in post-treatment sample appeared higher in amount. A schematic representation of the dystrophin point mutation (black vertical bar) and the region recognized by used antibodies is depicted above the western blot.(H) Results of western blot analysis involving dystrophin antibodies Mandys106 and dys1, of total protein extracts (80 µg, following protein concentration by Amicon Ultra-0.5 centrifugal filter devices, Millipore) obtained from pre-treatment and post-treatment biopsy specimens of Pt 06 (gastrocnemius); Ct was used as positive dystrophin control. Below, bands corresponding to myosin heavy chain are shown as loading control. Bands corresponding approximately to full length dystrophin are observed in pre and post-treatment samples with both antibodies Bands in pre-treatment sample appeared higher in amount as compared to post-treatment sample. A schematic representation of the dystrophin point mutation (black vertical bar) and the region recognized by used antibodies is depicted above the western blot. 