Keywords: تهیه پیش دبستانی; RIPC; Remote ischemic preconditioning; RMPC; Remote morphine preconditioning; EPC; Early preconditioning; LPC; Late preconditioning; OR; Opioid receptor; ROS; Reactive oxygen species; Mb; Myoglobin; VSMC; Vascular smooth muscle cell; MPO; Myeloperoxidase;