Review Article

Oxidative Stress Indexes for Diagnosis of Health or Disease in Humans

Table 1

Biomarkers used in the oxidative stress measurement in human fluids.

Oxidation markers

Lipids
(i) Conjugated dienes (CD)
(ii) Aldehydic products
 (a) Malondialdehyde (MDA)
 (b) 4-hydroxy-2-nonenal (4-HNE)
(iii) Alkane exhalation
(iv) Total hydroperoxides (LOOH)
(v) Oxidized LDL (oxo-LDL)
(vi) F2-isoprostanes (F2-Iso)
(vii) Advanced lipid peroxidation end products (ALEs)
DNA
(i) Nucleotide oxidation
 (a) 8-hydroxy-guanosine (8OHG)
 (b) 8-hydroxy-desoxyguanosine (8OHdG)
 (c) Thymidine glycol
 (d) 7,8-dihydroxy-8-oxo-2-deoxyguanosine (8oxodG)
 (e) 5-chlorouracil
(ii) Deoxyribose oxidation
Proteins
(i) Protein carbonyls
(ii) Advanced oxidation protein products (AOPP)
(iii) Amino acid oxidation
 (a) 3-nitro-tyrosine
 (b) 3-chloro-tyrosine
(iv) Ischemia-modified albumin (IMA)
(v) Advanced glycation end products (AGEs)
Oxidants
(i) Hydrogen peroxide (H2O2)
(ii) Superoxide anion radical (O2−⋅)
(iii) Nitric oxide (NO)
Antioxidant markers
Nonenzymatic
(i) Vitamins (A, C, E)
(ii) Metals (Se, Zn)
(iii) Glutathione and cysteine
(iv) Uric acid
Enzymes
(i) Superoxide dismutase (SOD)
(ii) Glutathione peroxidase (GPx)
(iii) Glutathione reductase (GR)
(iv) Catalase (CAT)
Nonenzymatic antioxidant capacity
(i) Oxygen radical antioxidant capacity (ORAC)
(ii) Total radical-trapping antioxidant parameter (TRAP)
(iii) Total antioxidant capacity (TAC)
(iv) Total antioxidant status (TAS)
(v) Ferric reducing antioxidant potential (FRAP)
(vi) Antioxidant gap
(vii) Biological antioxidant potential (BAP)

We consider MDA and TBARS as the same because TBARS is the procedure most used to measure MDA.