Portal de Periódicos da CAPES

Levels of 8-oxo-dGsn and 8-oxo-Gsn in random urine are consistent with 24 h urine in healthy subjects and patients with renal disease

2017; Taylor & Francis; Volume: 51; Issue: 6 Linguagem: Inglês

10.1080/10715762.2017.1346249

1071-5762

Yong-Hui Mao, Qinghua Weng, Leng-Nan Xu, Xiang‐Yu Li, Ban Zhao, Ying Sun, Jing-Jing Nie, Ji-Hong Hu, Qi Zhou, L.‐Q. Zhang, Jian Guo, Ming-Zhang Zuo, Sadayoshi Ito, Jian‐Ping Cai,

DNA and Nucleic Acid Chemistry

Oxidatively generated damage to nucleic acids may play an important role in the pathophysiological processes of a variety of diseases. 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxo-dGsn) and 8-oxo-7,8-dihydroguanosine (8-oxo-Gsn) are oxidatively generated products of DNA and RNA, respectively. Our previous studies have suggested that the amounts of 8-oxo-dGsn and 8-oxo-Gsn in urine were considerably higher than other body fluid or tissue. The aim of this study was to investigate whether 8-oxo-dGsn and 8-oxo-Gsn levels in random urine samples are consistent with those in 24 h urine samples in healthy subjects and patients with renal disease. A total of 16 healthy subjects and 104 renal disease patients were enrolled in this study, and their random and 24 h urine samples were collected. The levels of urinary 8-oxo-dGsn and 8-oxo-Gsn were quantified by LC-MS/MS and corrected by creatinine. Regardless of healthy subjects or renal disease patients, the levels of oxidised nucleosides in random urine samples were consistent with 24 h urine samples. Regardless of the age bracket, there is no significant difference between random samples and 24 h urine samples. In conclusion, 8-oxo-dGsn and 8-oxo-Gsn levels in random urine samples could replace those in 24 h urine samples, and were considered as the representative of the level of systemic oxidative stress for the whole day.