RESUMO
ABSTRACT Objective: This study investigates the relationship between serum nitric oxide, asymmetrical dimethylarginine and symmetrical dimethylarginine levels and Total Antioxidant Capacity, and cognitive function in patients with bipolar disorder. Method: The study included 42 bipolar patients, diagnosed and assessed according to the DSM-V criteria, and 30 healthy controls. The Sociodemographic Questionnaire was used for the collection of data, and a bivariate Pearson correlation analysis was carried out. Results: The patient scores from a Rey Auditory Verbal Learning Test (RAVLT), Auditory Consonant Trigram (ACT), Digit Span Test (DST), Wisconsin Card Sorting Test (WCST), Trail Making-B (TMT-B) and Stroop Tests (ST) were found to be impaired in patients with BD when compared to the healthy controls. The SDMA level of the patient group was significantly higher in the control group, while the ADMA level was lower. The SDMA value was found to be positively correlated with ST-1,2,5 duration; and the NO value was positively correlated with ST-3 duration. Conclusions: The presence of neurobiological markers may serve to predict the severity of neurocognitive deficits, and can provide information about the progress of the disease.