Urinary biomarkers of oxidative status.

Urinary biomarkers of oxidative status.
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DOI:
10.1016/j.cca.2012.06.012
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发表时间:
2012-10-09
期刊:
Clinica chimica acta; international journal of clinical chemistry
影响因子:
--
通讯作者:
Spasojevic I
Spasojevic I
中科院分区:
其他
文献类型:
--
作者:
Il'yasova D;Scarbrough P;Spasojevic I

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由活性氧(ROS)产生的氧化损伤已经涉及许多健康状况(包括大量慢性疾病)的病因学和病理学。尿液氧化状态的生物标志物提供了一个很好的机会,研究人群中的氧化还原平衡。使用尿液生物标志物,样本采集是非侵入性的,有机/金属含量低,这最大限度地减少了对样本中分子的氧化损伤的人为形成。此外,与血液水平相比,尿液中生物标志物的水平在更长的时间段内呈现氧化还原平衡的综合指数。本文综述了适用于流行病学研究的生物标志物的评价标准,并评价了几类非酶促形成的生物标志物:脂质、蛋白质、DNA和尿酸氧化产物尿囊素的氧化损伤。审查认为,形成,代谢和发挥每种生物标志物,现有的数据验证在动物和临床模型的氧化应激,分析方法,其内部和个体间的变化。用于监测氧化状态随时间推移的推荐生物标志物是F2-异前列烷和8-oxodG。对于个体间比较,建议使用F2-异前列腺素,而尿8-oxodG水平可能会受到DNA修复能力差异的混淆。有希望的尿生物标志物包括尿囊素、丙烯醛-赖氨酸和二酪氨酸。
Oxidative damage produced by reactive oxygen species (ROS) has been implicated in the etiology and pathology of many health conditions, including a large number of chronic diseases. Urinary biomarkers of oxidative status present a great opportunity to study redox balance in human populations. With urinary biomarkers, specimen collection is non-invasive and the organic/metal content is low, which minimizes the artifactual formation of oxidative damage to molecules in specimens. Also, urinary levels of the biomarkers present intergraded indices of redox balance over a longer period of time compared to blood levels. This review summarizes the criteria for evaluation of biomarkers applicable to epidemiological studies and evaluation of several classes of biomarkers that are formed non-enzymatically: oxidative damage to lipids, proteins, DNA, and allantoin, an oxidative product of uric acid. The review considers formation, metabolism, and exertion of each biomarker, available data on validation in animal and clinical models of oxidative stress, analytical approaches, and their intra- and inter-individual variation. The recommended biomarkers for monitoring oxidative status over time are F2-isoprostanes and 8-oxodG. For inter-individual comparisons, F2-isoprostanes are recommended, whereas urinary 8-oxodG levels may be confounded by differences in the DNA repair capacity. Promising urinary biomarkers include allantoin, acrolein-lysine, and dityrosine.
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