Analysis of oxidative stress expressed by urinary level of biopyrrins and 8-hydroxydeoxyguanosine in patients with chronic schizophrenia.

Aims: Previous studies have supported the claim that psychological stress induces the production of reactive oxygen species. Several authors have suggested that patients with psychiatric disorders show high levels of oxidative stress markers. We examined different oxidative stress markers in patients with chronic schizophrenia.

Effects of lifestyle factors on urinary oxidative stress and serum antioxidant markers in pregnant Japanese women: A cohort study.

Oxidative stress plays a major pathological role in pregnancy-related complications. Although oxidative stress is induced by exogenous toxins in association with a poor lifestyle in normal subjects, there is little information on the factors altering oxidative stress and antioxidant levels during pregnancy. The purpose of this study was to determine the relationship between lifestyle factors and oxidative stress/antioxidant levels during each trimester and 1-month postpartum.

Elevated urinary biopyrrin excretion and oxidative bilirubin metabolism during 24-hour ultramarathon running.

The oxidative metabolite of bilirubin, biopyrrin, is considered a useful candidate marker of oxidative stress in vivo. The present study examines whether urinary biopyrrin excretion is elevated and how general laboratory parameters are changed by long-duration running such as that involved in ultramarathons. Fifteen volunteer runners (12 males and 3 females; aged 44 +/- 9 years; means +/- SD) provided written informed consent to participate in this study.

Differences in oxidative stress markers based on the aetiology of heart failure: comparison of oxidative stress in patients with and without coronary artery disease.

Various oxidative stress markers have been measured to evaluate the status of heart failure (HF). However, the relationships between these markers and the aetiology of HF have not been fully investigated. This study compared 8-hydroxy-2'-deoxyguanosine (8-OHdG) and biopyrrins levels in patients with ischemic and non-ischemic HF.