Oxygen-free radicals generally known as reactive oxygen species (ROS) are well recognized for playing a dual role as both deleterious and beneficial radical specie. The development of tissue injury and the outcome of the disease depend on the balance between the generation of toxic radicals and tissue antioxidant status (Windrow et al., 1993). However, the concentrations of ROS (such as superoxide anion, hydrogen peroxide, and hydroxy radical) exceeding the antioxidant protection of the cells can elicit widespread damage to DNA, proteins, and endogenous lipids (Yu, 1994)