Free Radicals In Biological Systems And In The Environment

A free radical is an atom or molecule that possesses one or more unpaired electrons. Since electrons are more stable when paired together in orbitals, radicals are generally unstable and are therefore highly reactive with a variety of substrates. Free radicals of importance in biological systems include reactive oxygen species (ROS) and reactive nitrogen species (RNS). ROS include superoxide anion X hydroxyl radical ('OH), lipid radical (LOO^), peroxy (XOO^) radicals, and singlet oxygen (:O2). Hydrogen peroxide (H2O2) and lipid hydroperoxides (LOOH) are not truly free radicals, but they are lumped with the ROS because of their increased reactivity with biomolecules. RNS include nitric oxide (NO), a diatomic free radical that is synthesized by a family of enzymes called NO synthases (NOS), and peroxynitrite (ONOO ) formed by the reaction of NO with . Nitrite radical

10 Ways To Fight Off Cancer

10 Ways To Fight Off Cancer

Learning About 10 Ways Fight Off Cancer Can Have Amazing Benefits For Your Life The Best Tips On How To Keep This Killer At Bay Discovering that you or a loved one has cancer can be utterly terrifying. All the same, once you comprehend the causes of cancer and learn how to reverse those causes, you or your loved one may have more than a fighting chance of beating out cancer.

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