Free radical research · 2010
HNE-protein adducts formation in different pre-carcinogenic stages of hepatitis in LEC rats.
СтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Marquez-Quiñones Adriana, Cipak Ana, Zarkovic Kamelija, Fattel-Fazenda Samia, Villa-Treviño Saul, Waeg Georg, Zarkovic Neven, Guéraud Françoise
Аннотация
Lipid peroxidation is highly associated with chronic degenerative diseases such as cancer. 4-hydroxy-2-nonenal is one of the major products of lipid peroxidation. 4-hydroxy-2-nonenal can interact with biomolecules, changing their conformation and activity. This study presents 4-hydroxy-2-nonenal-protein adducts formation in the first stages of Long-Evans Cinnamon rat hepatitis, a well recognized model for oxidative stress-associated hepatocarcinogenesis. 4-hydroxy-2-nonenal-protein adducts appeared in hepatocyte cytoplasm before the beginning of hepatitis and their presence was very strong during hepatitis, while a transient perinuclear expression of 4-hydroxy-2-nonenal-protein adducts was shown mainly at early hepatitis stages. 4-hydroxy-2-nonenal-protein adducts formation correlated to the expression of the tumour marker glutathione S-transferase P-form. These results show that lipid peroxidation modification of proteins might be implicated in the first stages of hepatocyte cancer initiation in Long-Evans Cinnamon rats.