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Subject: search.filters.subject.vitamin B12

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    Relationships between Vitamin B12, Folate Levels and Clinical Features in Attention Deficit Hyperactivity Disorder and Attention Deficit Hyperactivity Disorder-Not Otherwise Specified
    (GALENOS PUBL HOUSE, 2020-01-01) Ozturk, Yusuf; Topal, Zehra; Demir, Nuran; Tufan, Ali Evren
    Aim: In this study, we aimed to compare the levels of vitamin 812 and folate in children with Attention Deficit and Hyperactivity Disorder (ADHD) and Attention Deficit and Hyperactivity Disorder-Not Otherwise Specified (ADHD-NOS). Materials and Methods: This study was planned as a cross-sectional, retrospective study. Patients were recruited between January 2012 and January 2013 and 205 case records were evaluated. The ADHD and ADHA-NOS groups were compared according to vitamin B12 and folate levels. Symptom severity was evaluated by the Turgay DSM-IV-Based Child and Adolescent Behavior Disorders Screening and Rating scale. Anxiety symptom severity was assessed by The Screen for Anxiety Related Emotional Disorders. Results: The average age of the children in the ADHD group was 10.88 +/- 3.02 (n=99) years, and the average age of the children in the ADHD-NOS group was 9.93 +/- 2.49 (n=106) years. There was no statistically significant difference between two groups in terms of Vitamin B12 level and folate level (p>0.05). A statistically significant negative correlation between the total number of diagnoses of a child and vitamin 812 levels was found. Folate levels correlated significantly with anxiety total scores generalized anxiety subscale. Conclusion: Vitamin B12 levels may be affected in children with impairing ADHD symptoms and increased comorbidities. The results of the study should be supported by future studies.
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    Comparison of serum B12, folate and homocysteine concentrations in children with autism spectrum disorder or attention deficit hyperactivity disorder and healthy controls
    (DOVE MEDICAL PRESS LTD, 2019-01-01) Yektas, Cigdem; Alpay, Merve; Tufan, Ali Evren
    Objective: We aimed to investigate the serum concentrations of vitamin B12, folate and homocysteine in children diagnosed with attention deficit hyperactivity disorder (ADHD) or autism spectrum disorder (ASD) and healthy controls. Materials and methods: Serum vitamin B12, folate and homocysteine concentrations were measured in 118 children (48 children diagnosed with ADHD, 35 children diagnosed with ASD and 35 healthy controls). Symptom severity in the ADHD and ASD groups was evaluated by the Childhood Autism Rating Scale and Turgay-DSM-1V-Based Screening and Assessment Scale for Disruptive Behavior Disorders. Multivariate analysis of covariance was used to evaluate the effects of diagnosis and gender on biochemical parameters. Results: The ADHD and ASD groups and the healthy controls differed significantly regarding vitamin B12 and homocysteine concentrations, but not folate levels. Patients with ASD had the lowest vitamin B12 and the highest homocysteine levels. Vitamin B12 levels correlated negatively with hyperactivity and/orimpulsivity and oppositionality symptoms in children with ADHD. There were no relationships between psychometric evaluations and laboratory measurements in children with ASD. Gender did not affect vitamin concentrations. Conclusion: Previous studies found that vitamin B12 was reduced while homocysteine was elevated among patients with ADHD and ASDs. Our results also support those reported previously. Oppositionality and hyperactivity and/orimpulsivity may be related to vitamin B12 and homocysteine levels in children with ADHD. Further studies are required to define the role of these parameters and effects on the etiology and clinical manifestations of ASD and ADHD.