监测SARS患者血MDA、NO和iNOS水平及其意义(英文)

Detection of serum MDA, NO and iNOS in patients with SARS and its clinical significance~*

目的 :监测SARS患者血清丙二醛 (MDA)和一氧化氮 (NO)、诱导型一氧化氮合酶 (iNOS)浓度并探讨其意义。方法 :采用硫代巴比妥酸比色法测定MDA、硝酸还原酶法测定NO、酶联免疫吸附法定量测定iNOS ,检测早期、恢复期SARS患者以及出院后SARS随访者 ,一线未患SARS医护人员 ,健康体检者血清中MDA、NO和iNOS含量。结果 :SARS早期血清MDA含量显著高于恢复期 (P <0 0 1) ,恢复期均高于出院后随访时和一线医护人员与体检者(P <0 0 1)。SARS早期组NO水平高于其他各组 (P <0 0 5 ) ,恢复期组、随访组均与一线医护人员组和健康对照组有显著差异 (P <0 0 1)。SARS早期iNOS含量高于其他各期 (P <0 0 1) ,恢复期与一线医护人员有显著差异 (P <0 0 5 ) ,其余组间两两比较均无显著差异 (P >0 0 5 )。结论 :SARS的发病机制中病理损伤与自由基有关。

AIM: To observe free radicals (MDA, NO) and iNOS of patients with severe acute respiratory syndrome (SARS) and to explore its significance. METHODS: MDA, NO_2^-/NO_3^- and iNOS were determined in SARS patients during the early, recovery and follow-up stage, front doctors and nurses (contact group) and health people (health control). RESULTS: The level of MDA during first stage was higher than that of recovery stage and the MDA level of recovery stage was higher than that of follow-up stage, contact group, and health control group (P<0.01). The content of NO_2^-/NO_3^- during early stage was higher than that of other groups, and the NO_2^-/NO_3^- contents of recovery stage, follow-up stage were higher than that of contact group and health control group (P<0.01), respectively. The mean of iNOS during early stage was highest than that of other stages (P<0.01) and the mean of recovery stage was higher than that of contact group (P<0.05), there were no difference in iNOS activity among any other groups (P>0.05). CONCLUSION: The pathological injury in pathogenesis of SARS is related to free radicals. [