The Effect of Two-Week Resistance and Endurance Training on Skeletal Muscle Repair and Regeneration after Ischemia-Reperfusion in Rat

Abstract

PURPOSE The present study examined the effect of two-week resistance and endurance training on skeletal muscle repair and regeneration after ischemia-reperfusion (IR) injury in rat. METHODS Ten week-old male Sprague-Dawley (SD) rats were divided into three groups (IR-CON, IR-RE, IR-EN). To evaluate different property of muscle types, soleus (SOL) and extensor digitorum longus (EDL) muscle were dissected. We conducted confocal microscope experiment and western blot for evaluating cell cycle of skeletal muscle repair and regeneration. RESULTS Satellite cells (SC) of SOL and EDL muscle were markedly increased after both exercise training. However myonuclear was only increased on SOL muscle. MyoD protein expression in SOL and EDL was increased after endurance exercise training. CONCLUSIONS It is consider that exercise training after IR injury may affect to repair and regeneration of damaged skeletal muscle positively by increasing SC and myonuclear in all exercise training, despite a little different response follow muscle types.

Keywords

• ischemia-reperfusion
• satellite cell
• myonuclear
• skeletal muscle
• exercise training