title: Lipid peroxidation and antioxidant status in head and neck squamous cell carcinoma patients.
abstract: Oxidative stress, a consequence of an imbalance between the formation and inactivation of reactive oxygen species, may be involved in the pathogenesis of many diseases including cancer. To evaluate the magnitude of oxidative stress, a study on the plasma levels of superoxide dismutase, total thiols, ascorbic acid and malondialdehyde (MDA) has been done in head and neck squamous cell carcinoma patients before the start of any oncological treatment and compared with healthy controls. The specific activity of superoxide dismutase in cancer patients is decreased significantly when compared to the control (p < 0.05). The total thiol and ascorbic acid levels are significantly reduced (p < 0.005) whereas MDA levels are significantly increased in the patients (p < 0.00005). Our findings show that the oxidative stress is elevated in cancer patients as evidenced by elevated levels of lipid peroxidation products and depletion of enzymatic and non-enzymatic antioxidants.
authors.affiliation: Department of Biochemistry, Lucknow University, Lucknow, India.
authors.forename: Aashita
authors.initials: A
authors.lastname: Gupta
authors.forename: Madan L B
authors.initials: ML
authors.lastname: Bhatt
authors.forename: Mithilesh K
authors.initials: MK
authors.lastname: Misra
mesh_terms: D000328:Adult; D000368:Aged; D000975:Antioxidants / Q000378:metabolism*; D001205:Ascorbic Acid / Q000097:blood; D002294:Carcinoma, Squamous Cell / Q000378:metabolism*; D006258:Head and Neck Neoplasms / Q000378:metabolism*; D006801:Humans; D015227:Lipid Peroxidation; D008297:Male; D008315:Malondialdehyde / Q000097:blood; D008875:Middle Aged; D009367:Neoplasm Staging; D013438:Sulfhydryl Compounds / Q000097:blood; D013482:Superoxide Dismutase / Q000097:blood
chemical_list: D000975:Antioxidants; D013438:Sulfhydryl Compounds; D008315:Malondialdehyde; D013482:Superoxide Dismutase; D001205:Ascorbic Acid