Free radical generation occurs continuously within cells as a consequence of common
metabolic processes. However, in high concentrations, whether from endogenous or …

The purpose of this chapter is to examine the role of antioxidants, and thus the role of free
radicals in the activities of the immune system. The chapter is divided into three main …

Free radicals are generated in our body by several systems. A balance among free radicals
and antioxidants is an important matter for appropriate physiological function. If free radicals …

Through evolution, oxygen, itself a free radical, was chosen as the terminal electron
acceptor for respiration. The two unpaired electrons of oxygen spin in the same direction; …

Reactive oxygen species (ROS) is a collective term used for oxygen-derived free radicals
(superoxide, hydroxyl radical, nitric oxide) and non-radical oxygen derivatives of high …

Cells generate energy by reducing molecular oxygen to water. Düring the process, small
amounts of partially reduced reactive oxygen forms are produced as unavoidable …

Free radicals and oxidants play a dual role as both toxic and beneficial compounds, since
they can be either harmful or helpful to the body. They are produced either from normal cell …

Oxidative stress has received a considerable scientific attention as a mediator in the etiology
of many human diseases. Oxidative stress is the result of an imbalance between free …

Reactive oxygen species (ROS) are generated constantly in vivo. They can lead to lipid
peroxidation and oxidation of some enzymes, as well as protein oxidation and degradation …

Recent research on herbal field reports various ailments associated with free radicals. The
risk of ailments because of oxidative stress increases due to undesirable way of life …