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Oxidative stress biomarkers in sporadic ALS

机译:散发性ALS中的氧化应激生物标志物

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摘要

We aimed to investigate oxidative stress biomarkers in a cross-sectional pilot study of 50 participants with sporadic ALS (SALS) compared to 46 control subjects. We measured urinary 8-oxodeoxyguanosine (8-oxodG), urinary 15-F2t-isoprostane (IsoP), and plasma protein carbonyl by ELISA methods. We also determined if ELISA measurement of 8-oxodG could be validated against measures from high-pressure liquid chromatography coupled with electrochemical detection, the current standard method. We found that 8-oxodG and IsoP levels adjusted for creatinine were significantly elevated in SALS participants. These differences persisted after age and gender were controlled in regression analyses. These markers are highly and positively correlated with each other. 8-oxodG measured by the two techniques from the same urine sample were positively correlated (p<.0001). Protein carbonyl was not different between SALS participants and controls. In conclusion, using ELISA, we confirmed that certain oxidative stress biomarkers were elevated in SALS participants. ELISA may be reliable and thus useful in epidemiology studies requiring large numbers of samples to determine the significance of increased oxidative stress markers in SALS. Further studies are required.
机译:我们旨在通过对50名散发性ALS(SALS)参与者与46名对照受试者进行比较的横断先导研究来研究氧化应激生物标记物。我们通过ELISA方法测量了尿中的8-氧代脱氧鸟苷(8-oxodG),尿液中的15-F2t-异前列腺素(IsoP)和血浆蛋白羰基。我们还确定了是否可以通过高压液相色谱结合电化学检测(当前的标准方法)来验证8-oxodG的ELISA测定。我们发现在SALS参与者中,针对肌酐调整的8-oxodG和IsoP水平显着升高。在回归分析中控制了年龄和性别之后,这些差异仍然存在。这些标记相互之间高度正相关。通过两种技术从同一尿液样品中测得的8-oxodG呈正相关(p <.0001)。 SALS参与者和对照组之间的羰基蛋白没有差异。总之,使用ELISA,我们证实了SALS参与者中某些氧化应激生物标记物的升高。 ELISA可能是可靠的,因此可用于需要大量样本来确定SALS中氧化应激标记物增加的重要性的流行病学研究中。需要进一步研究。

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