Medicina Fluminensis, Vol. 43. No. 2., 2007.
Pregledni rad
LIPID PEROXIDATION - CAUSES AND CONSEQUENCES
Leo Štefan
; Medicinski fakultet Sveučilišta u Rijeci, Hrvatska
Tina Tepšić
; Medicinski fakultet Sveučilišta u Rijeci, Hrvatska
Tina Zavidić
; Medicinski fakultet Sveučilišta u Rijeci, Hrvatska
Marta Urukalo
; Medicinski fakultet Sveučilišta u Rijeci, Hrvatska
Dalibor Tota
; Medicinski fakultet Sveučilišta u Rijeci, Hrvatska
Robert Domitrović
; Medicinski fakultet Sveučilišta u Rijeci, Hrvatska
Sažetak
ABSTRACT
Occasionally, under normal biological conditions, oxygen does manage to steal away electrons from other molecules by nonenzymatic autoxidations, which results in the free radical formation. Polyunsaturated fatty acids frequently serves as the target for generated free radicals, inducing lipid peroxidation. Intracellular and extracelular antioxidants attenuate oxidative damage of lipid
molecules, primarily PUFA, but also other molecules. The most efficient way to eliminate undesirable toxic species is by means of enzyme catalysis. Families of antioxidant enzymes have evolved for this purpose, including superoxide dismutases (SOD) for the elimination of the superoxide radical, and catalases (CAT) and glutathione peroxidases (GPx) for the elimination of hydrogen peroxide and organic peroxides. Lipid damage could be determined by measuring the amount of malondialdehyde (MDA), 4-hydroxynonenal (HNE), isoprostanes and other products of lipid peroksidation. Increased lipid peroxidation increase the risk of atherogenesis and other inflammatory diseases.
Ključne riječi
reactive oxygen species; antioxidants; lipid peroxidation; atherosclerosis
Hrčak ID:
22556
URI
Datum izdavanja:
25.6.2007.
Posjeta: 14.031 *