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检测1255例康康吸烟者和524例健康非吸烟者血浆一氧化氮(P-NO)、维生素C(P-VC)、维生素E(P-VE)、β-胡萝卜素(P-β-CAR)含量和红细胞超氧化物歧化酶(E-SOD)、过氧化氢酶(E-CAT)、谷胱甘肽过氧化物酶(E-GSH-PX)活性,并做65对配比实验,结果表明,与非吸烟组比较,吸烟组的P-NO平均含量显著升高(P<0.001),P-VC、P-VE、P-β-CAR平均含量和E-SOD、E-CAT、E-GSH-PX平均活性皆显著降低(P<0.001)。随吸烟时间和吸烟量的增加,其P-NO含量也增高,P-VC、P-VE、P-β-CAR含量和E-SOD、E-CAT、E-GSH-PX活性降低,并均呈一定程度的的直线相关(P<0.001)。提示吸烟者体内的氧化和抗氧化平衡严重失调,氧自由基反应明显加剧。
The levels of plasma nitric oxide (P-NO), vitamin C (P-VC), vitamin E (P-VE) and β-carotene (P-β-CAR) were determined in 1255 healthy smokers and 524 healthy nonsmokers ) Content and E-SOD, E-CAT and E-GSH-PX activities were measured and compared. The results showed that the average content of P-NO in smoking group was significantly higher than that in non-smoking group (P <0.001), and the average contents of P-VC, P-VE, P-β-CAR and E- The average activity of CAT and E-GSH-PX were significantly decreased (P <0.001). The content of P-NO, P-VC, P-VE and P-β-CAR and the activities of E-SOD, E-CAT and E-GSH-PX decreased with the increase of smoking time and smoking There was a certain degree of linear correlation (P <0.001). Tip smokers body oxidation and antioxidant balance of a serious imbalance, oxygen free radical reaction was significantly aggravated.