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 …

Free radicals and related species have attracted a great deal of attention in recent years.
They are mainly derived from oxygen (reactive oxygen species/ROS) and nitrogen (reactive …

There has been an explosion of research related to free radicals and antioxidants in recent
years, and hundreds of laboratories worldwide are actively involved in many as pects of free …

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 …

Free radicals are substances normally produced by the human body as one of the defense
mechanisms against harmful substances. When the rate of their production exceeds the …

Free radicals are small diffusible molecules that are highly reactive because of the unpaired
electron. Free radicals were initially thought to be oxygen centred radicals called reactive …

Free radicals are chemical species (atoms, molecules, or ions) containing one or more
unpaired electrons in their external orbitals and generally display a remarkable reactivity …

Damage to cells caused by free radicals is believed to play a central role in the aging
process and in disease progression. Antioxidants are our first line of defense against free …

The biochemistry of reactive oxygen species (ROS) such as superoxide anion, hydrogen
peroxide, hydroxyl radicals, and singlet oxygen is important in aerobic metabolism of the cell …