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miRNA profiling in the hippocampus of attention‐deficit/hyperactivity disorder rats
Author(s) -
Tian Tian,
Zhang Yan,
Wu Tianqi,
Yang Lei,
Chen Chunxiao,
Li Nan,
Li Yue,
Xu Siliang,
Fu Ziyi,
Cui Xianwei,
Ji Chenbo,
Chi Xia,
Tong Meiling,
Chen Ronghua,
Hong Qin,
Hu Youfang
Publication year - 2019
Publication title -
journal of cellular biochemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.028
H-Index - 165
eISSN - 1097-4644
pISSN - 0730-2312
DOI - 10.1002/jcb.27639
Subject(s) - attention deficit hyperactivity disorder , hippocampus , neuroscience , profiling (computer programming) , microrna , attention deficit , attention deficit disorder , psychology , psychiatry , biology , genetics , computer science , gene , operating system
Attention‐deficit/hyperactivity disorder (ADHD) is characterized by attention deficit, hyperactivity, impulsivity, and learning and memory impairment. Although the pathogenesis of learning and memory impairment is still unknown, some studies have suggested an association with hippocampus dysfunction. We aimed to explore the role of miRNAs in the learning and memory impairments observed in ADHD. Differentially expressed hippocampal micro‐ribonucleic acids (miRNAs) in spontaneously hypertensive rats (SHRs) and Wistar‐Kyoto rats (WKYs) were detected on an Illumina HiSeq. 2000 genome analyzer. A total of 25 differentially expressed miRNAs (fold‐change ≥ 2 and P ‐value < 0.05) were identified. The target genes of these differentially expressed miRNAs were predicted using online tools (TargetScan and miRDB). Gene ontology and pathway analysis of the predicted target genes were carried out to assess their putative biological functions. Meanwhile, quantitative real‐time PCR was used to validate the HiSeq results, revealing that three miRNAs (miR‐1‐b, miR‐741‐3p, and miR‐206‐3p) were upregulated and four (miR‐182, miR‐471‐5p, miR‐183‐5p, and miR‐211‐5p) were downregulated in the SHR group compared with the WKY group. In addition, we confirmed that Dyrk1a is regulated by miR‐211‐5p. These results help us understand the contribution of miRNAs in the hippocampus to ADHD and provide new insights into the pathogenesis of this condition.