PC can obviously protect cultured neonatal rat cardiomyocytes, isolated or in situ rat heart from H/R or I/R injuries.

• 结果提示，缺血或缺氧预处理对心肌具有保护作用，预处理可以减少再次长时间的缺氧/复氧或缺血/再灌注对心肌细胞的损伤。