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Oxidative Products of Proteins and Antioxidant Potential of Thiols in Gastric Carcinoma Patients

机译:胃癌患者蛋白质的氧化产物和硫醇的抗氧化潜力

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Oxidative Products of Proteins and Antioxidant Potential of Thiols in Gastric Carcinoma PatientsIt has been suggested that oxidative stress defined as a shift in antioxidant/oxidant balance towards oxidants is associated with the pathogenesis of many diseases, including carcinogenesis. Reactive oxygen species can induce carcinogenesis via injury to macromolecules such as DNA, carbohydrates and proteins. Forty primary gastric carcinoma patients and 40 healthy controls were included in the study. Advanced oxidation protein products, total thiols, total protein, albumin in plasma, % hemolysis in RBC suspension and glutathione in both whole blood and plasma were estimated. Our studies demonstrated a significant increase in advanced oxidation protein products, % hemolysis (p=0.033), A:G ratio (p=0.003) and a highly significant decrease in blood glutathione (p=0.036), total thiols (p=0.001), plasma thiols other than glutathione and total antioxidant activity. The findings suggest that gastric carcinoma is associated with oxygen derived free radicals accumulation, and depletion of total antioxidant activity has lead to oxidative stress and advancement of oxidative-antioxidative disorders followed by progression of gastric cancer.
机译:胃癌患者蛋白质的氧化产物和硫醇的抗氧化潜力已表明,氧化应激定义为抗氧化剂/氧化剂平衡向氧化剂的转移,与许多疾病的发病机理有关,包括癌变。活性氧可通过损伤大分子(例如DNA,碳水化合物和蛋白质)来诱导癌变。该研究包括40名原发性胃癌患者和40名健康对照。估计了高级氧化蛋白产物,总硫醇,总蛋白,血浆中的白蛋白,RBC悬浮液中的溶血百分比以及全血和血浆中的谷胱甘肽。我们的研究表明,高级氧化蛋白产物,溶血百分比(p = 0.033),A:G比(p = 0.003)和血液谷胱甘肽(p = 0.036),总硫醇(p = 0.001)的显着降低显着增加。 ,谷胱甘肽以外的血浆硫醇和总抗氧化活性。这些发现表明,胃癌与氧衍生的自由基积累有关,总抗氧化剂活性的降低导致氧化应激和氧化-抗氧化疾病的发展,进而导致胃癌的发展。

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