Repository of Research and Investigative Information

Repository of Research and Investigative Information

Rafsanjan University of Medical Sciences

Profiling of miRNAs in serum of children with attention-deficit hyperactivity disorder shows significant alterations

(2019) Profiling of miRNAs in serum of children with attention-deficit hyperactivity disorder shows significant alterations. Journal of Psychiatric Research. pp. 185-192.

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Background: Attention-deficit/hyperactivity disorder (ADHD), a common psychiatric disorder, is identified by abnormal levels of impulsivity, inattention, and hyperactivity. MiRNAs play important roles in neural network development of the brain. Circulating miRNAs (cmiRNAs) are offered as promising noninvasive markers for psychiatric disorders. In this study, the expression level of neurologically relevant miRNAs was evaluated in serum samples of ADHD individuals. Methods: RNA extraction was performed for 60 subjects with ADHD and 60 healthy controls, and the cDNAs were synthesized for all the miRNAs. The expression level of 84 cmiRNAs was then examined in 4 ADHD subjects and 4 controls. The altered expression of 10 cmiRNAs was further evaluated in validation cohort comprising 56 ADHD and 56 control samples by qPCR. The diagnostic power of the miRNAs was determined by use of Receiver operating characteristic (ROC) analysis. The cmiRNAs target genes were predicted using DIANA mirPath software and gene ontology enrichment analysis was performed using Cytoscape CLUGO. Results: Initially, 10 miRNAs showed differential expression in ADHD individuals. Further analysis confirmed four miRNAs (hsa-miR-101-3p, hsa-miR-130a-3p, hsa-miR-138-5p and hsa-miR-195-5p) upregulated and one miRNA (hsa-miR-106b-5p) downregulated. These miRNAs showed significant predictive values for discriminating ADHD individuals. Enrichment analysis highlighted the involvement of the deregulated cmiRNAs in many canonical neurobiological pathways and mechanisms. Conclusions: Our report is the first comprehensive study on the expression profiling of miRNAs in serum of ADHD subjects. These findings suggest a set of cmiRNAs as potential noninvasive biomarkers for ADHD.

Item Type: Article
Keywords: Attention-deficit hyperactivity disorder Circulating miRNAs Psychiatric disorders Gene expression Profiling circulating mirnas microrna rna expression dysregulation adolescents cytoscape networks disease
Subjects: QU Biochemistry. Cell Biology and Genetics > QU 100-133 Biochemistry of the Human Body
Divisions: Education Vice-Chancellor Department > Faculty of Medicine > Department of Basic Science > Department of Clinical Biochemistry
Page Range: pp. 185-192
Journal or Publication Title: Journal of Psychiatric Research
Journal Index: ISI, Pubmed, Scopus
Volume: 109
Identification Number:
Depositing User: خانم مهتاب اکبری

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