Akademik Veri Yönetim Sistemi
International Journal of Developmental Neuroscience, cilt.84, sa.8, ss.857-866, 2024 (SCI-Expanded)
Objective: Evaluation of the biomarkers and their relations with sleep in attention deficit hyperactivity disorder (ADHD) is important for understanding the impairments in cognitive functioning. In this study, we aimed to investigate the brain-derived neurotrophic factor (BDNF) and sialic acid (Sia) levels, and their possible relations with chronotypes in ADHD. Methods: The study included 100 drug-naive children with ADHD and 74 healthy children as controls. Conners' Parent Rating Scale-Revised (CPRS-R) scores were used for the severity assessment. Morningness Eveningness Questionnaire (MEQ) was used to determine the chronotypes of participants. ELISA kits were used for the assessment of BDNF and Sia plasma levels. Results: Levels of BDNF and Sia were found to be statistically significantly higher in the ADHD group compared to healthy children (p < 0.001, p < 0.001, respectively). BDNF and Sia levels were found to be higher in the ADHD group with eveningness chronotype (p = 0.045, p = 0.038). The binary logistic regression model was statistically significant (p = 0.033), higher BDNF and Sia levels were assessed as predictive factors for the diagnosis of ADHD. Also, eveningness chronotype was found as a predictive factor of BDNF and Sia levels in ADHD. Conclusion: The results indicate that BDNF and Sia levels, which are related to cognitive functions and sleep, increase with the age of ADHD. Eveningness chronotype, connected with the severity of ADHD, is related to BDNF and Sia levels. There is a need for further studies to confirm these results.