Microribonucleic acid dysregulations in children and adolescents with obsessive–compulsive disorder
MEHMET EMİN ERDAL | ÖZLEM İZCİ AY | MUSTAFA ERTAN AY | BAHAR TAŞDELEN
Aim: Obsessive–compulsive disorder (OCD) is a disorder characterized by the presence of obsessions and/or compulsions. Although disorder etiology and pathogenesis remains unknown, several theories about OCD development have been proposed, and many researchers believe that it is caused by both genetic and environmental factors. In the current study, our aim was to investigate miRNA levels in OCD. Methods: In the current study, we evaluated miR18a-5p, miR22-3p, miR24-3p, miR106b-5p, miR107, miR125b-5p, and miR155a-5p levels in child and adolescent OCD patients. The research sample consisted of a group of 23 OCD patients and 40 healthy volunteer controls. Results: There was no significant difference in age and sex between the two groups (P0.05).The levels of miR22-3p, miR24-3p, miR106b-5p, m...
The impact of synapsin III gene on the neurometabolite level alterations after single-dose methylphenidate in attention-deficit hyperactivity disorder patients
Erdal, Mehmet Emin
Objective: To investigate the neurometabolite level changes according to synapsin III gene rs133945G.A and rs133946C.G polymorphisms by using magnetic resonance spectroscopy (MRS) in patients with attention-deficit hyperactivity disorder (ADHD). Methods: Fifty-seven adults diagnosed with ADHD were recruited for the study. The participants were examined by single-voxel 1H MRS when medication naïve and 30 minutes after oral administration of 10 mg methylphenidate (Mph). Those who had been on a stimulant discontinued the medication 48 hours before MRS imaging. Spectra were taken from the anterior cingulate cortex, dorsolateral prefrontal cortex, striatum, and cerebellum, and N-acetylaspartate (NAA), choline, and creatine levels were examined. For genotyping of the synapsin III gene polymorphi...
White matter alterations related to attention-deficit hyperactivity disorder and COMT val158met polymorphism: children with valine homozygote attention-deficit hyperactivity disorder have altered white matter connectivity in the right cingulum (cingulate gyrus)
MEHMET EMİN ERDAL | ÖZLEM İZCİ AY
Introduction: In this article, the COMT gene val158met polymorphism and attention-deficit hyperactivity disorder (ADHD)-related differences in diffusion-tensor-imaging-measured white matter (WM) structure in children with ADHD and controls were investigated. Patients and methods: A total of 71 children diagnosed with ADHD and 24 controls aged 8–15 years were recruited. Using diffusion tensor imaging, COMT polymorphism and ADHD-related WM alterations were investigated, and any interaction effect between the COMT polymorphism and ADHD was also examined. The effects of age, sex, and estimated total IQ were controlled by multivariate analysis of covariance (MANCOVA). Results: First, an interaction between the COMT val158met polymorphism and ADHD in the right (R) cingulum (cingulate gyrus) (CGC...