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Aging with higher fractional exhaled nitric oxide levels are associated with increased urinary 8-oxo-7,8-dihydro-2′-deoxyguanosine concentrations in elder females

Jian Hou, Yuqing Yang, Xiji Huang, Yuanchao Song, Huizhen Sun, Jianshu Wang, Fan Hou, Chuanyao Liu, Weihong Chen, Jing Yuan
Environmental science and pollution research international 2016 v.23 no.23 pp. 23815-23824
DNA, air pollutants, air pollution, cooking, elderly, electrochemistry, excretion, females, high performance liquid chromatography, humans, inflammation, liquid petroleum gas, nitric oxide, oxidative stress, regression analysis, risk, smoking (habit), women
Indoor air pollutants from environmental tobacco smoke and cooking fume can induce oxidative stress and inflammatory response, which generate oxidatively damaged DNA in human body. Among 2224 adults, levels of FENO and urinary 8-oxodG were measured using a nano coulomb nitric oxide analyzer and a high performance liquid chromatography system with electrochemical detector, respectively. Association between aging with higher FENO levels and urinary 8-oxodG levels were analyzed using multiple linear regression analysis. Nonsmoking women aged 64 years and over, with higher FENO (≥ 25 part per billion) and self-catering but without passive smoking had a higher risk of increased urinary 8-oxodG (△% of urinary 8-oxodG: 81.3 %, 95 % CI: 27.4–158.0 %) levels, particularly these elderly women with using liquefied petroleum gas for cooking, had a higher risk for increased urinary 8-oxodG levels (△% of urinary 8-oxodG: 100.2 %, 95 % CI: 95 % CI: 35.3–196.3 %), compared with those aged less than 64 years, with lower FENO (< 25 part per billion). Cooking activity aggravated aging-related the aging-induced in urinary 8-oxodG excretion among nonsmoking women aged 64 years and over but without passive smoking.