Publicou 4 edições por ano
ISSN Imprimir: 0731-8898
ISSN On-line: 2162-6537
Indexed in
Antioxidant Properties of Apple Juice and Its Protection Against Cr( VI)-Induced Cellular Injury
RESUMO
Reactive oxygen species (ROS) have been shown to cause a broad spectrum of damage to the biological system. ROS-mediated reactions are believed to play a key role in Cr(VI)-induced carcinogenesis. Using electron spin resonance (ESR) spin trapping, the present study shows that apple juice efficiently scavenged hydroxyl radicals generated by Cr(VI) reduction catalyzed by glutathione reduc-tase/NADPH. Apple juice reduced Cr(VI)-induced lipid peroxidation, DNA damage, cell apoptosis, and NF-kВ activation in human lung epithelial A549 cells. The lipid peroxidation was measured by a colorimetric assay, DNA damage by single cell gel electrophoresis assay, induction of cell apoptosis by flow cytometry, and activation of NF-kВ by luciferase assay. The results show that through its antioxidant properties, apple juice can protect Cr(VI)-induced cellular injury and may help reduce its carcinogenic potential.
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