The levels of urinary hydrogen peroxide and thiobarbituric acid reactive substances have been compared during the menstrual cycle of 12 regularly menstruating women. Higher level of both indices of oxidative stress (normalized with respect to creatinine content) were found in the luteal phase of the cycle. These results give further evidence for the usefulness of urinary hydrogen peroxide and thiobarbituric acid reactive substances as potential biomarkers of oxidative stress and for the antioxidant action of estrogens.

中文翻译：

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月经周期中氧化应激标志物的变化。

在12名经常月经的妇女的月经周期中比较了尿中的过氧化氢和硫代巴比妥酸反应性物质的水平。在该周期的黄体期中发现了较高的氧化应激指数（相对于肌酐含量标准化）。这些结果为尿过氧化氢和硫代巴比妥酸反应性物质作为潜在的氧化应激生物标志物以及雌激素的抗氧化作用提供了进一步的证据。