Does the Interdependence between Oxidative Stress and Inflammation Explain the Antioxidant Paradox?

Table 1

Important reactive species in biological system.

Free radicals	Nonradicals
Reactive oxygen species
Superoxide,	Hydrogen peroxide, H2O2
Hydroxyl, OH	Singlet oxygen,
Peroxyl,	Organic peroxides, ROOH
Alkoxyl, RO	Peroxynitrite, ONOO^−
Carbonate,	Peroxynitrous acid, ONOOH
Reactive chlorine species
Atomic chlorine, Cl	Hypochlorous acid, HOCl
	Chlorine gas, Cl2
	Nitryl (nitronium) chloride, NO2Cl
Reactive nitrogen species
Nitric oxide, NO	Nitrous acid, HNO2
Nitrogen dioxide,	Nitrosyl cation, NO^+
	Nitroxyl anion, NO^−
	Dinitrogen tetroxide, N2O4
	Dinitrogen trioxide, N2O3
	Peroxynitrous acid, ONOOH
	Alkyl peroxynitrites, ROONO