Evaluation of total antioxidant potential (TRAP) and total antioxidant reactivity from luminol-enhanced chemiluminescence measurements.
The effect of antioxidants and biological fluids on the intensity of luminol induced chemiluminescence by radicals derived from the thermolysis of 2,2'-azo-bis(2-amidinopropane) has been employed to monitor TRAP and TOTAL ANTIOXIDANT REACTIVITY (TAR) levels. The latter parameter, which considers not only the quantity of oxidants but also their reactivity, is considered a potentially more useful index of the antioxidant status of a biological fluid. The results obtained employing human blood plasma and human urine show that the detected antioxidant capacity of both fluids is mainly related to the uric acid concentration of the samples.
Lissi
E
E
Department of Chemistry, Faculty of Science, University of Santiago de Chile.
Salim-Hanna
M
M
Pascual
C
C
del Castillo
M D
MD
D000578:Amidines / Q000737:chemistry; D000975:Antioxidants / Q000494:pharmacology*; D001769:Blood; D005609:Free Radicals; D006358:Hot Temperature; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008163:Luminescent Measurements; D008165:Luminol / Q000494:pharmacology*; D014527:Uric Acid / Q000097:blood / Q000652:urine; D014556:Urine
D000578:Amidines; D000975:Antioxidants; D005609:Free Radicals; D014527:Uric Acid; D008165:Luminol; C046728:2,2'-azobis(2-amidinopropane)