alexa Abstract | Erythrocyte malondialdeyde and antioxidant status in oral squamous cell carcinoma patients and tobacco chewers/smokers

Biomedical Research
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Abstract

The aim of this study was to evaluate the levels of lipid peroxidation and antioxidants in the erythrocytes of oral cancer patients and tobacco chewers/smokers. 25 patients with biopsy proven oral squamous cell carcinoma(OSCC), 25 cases of tobacco chewers/smokers and 25 age and sex matched healthy control subjects were included in the study. The levels of malondialdehyde (MDA), a lipid peroxidation marker and antioxidants like superoxide dis-mutase(SOD) and glutathione(G-SH) were determined by colorimetric methods. Erythro-cyte MDA levels were significantly increased (p<0.001) and erythrocyte SOD and G-SH lev-els were significantly reduced (p<0.001) in OSCC patients compared to control subjects, where as statistically significant increase(p<0.05) in SOD was observed in tobacco chew-ers/smokers group. There is a negative correlation between MDA and G-SH in OSCC pa-tients and tobacco chewers/smokers. This study shows that there is higher magnitude of oxidative stress in OSCC patients and a weak antioxidant defense system makes the muco-sal cells more vulnerable to the genotoxic effect of reactive oxygen species(ROS). A diet rich in antioxidants may alleviate the oxidative stress to some extent.

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Author(s): Raghavendra U Vivian D Souza Benedicta Dsouza

Keywords

Malondialdehyde, antioxidants, OSCC, smokers

 
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