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Published in: NeuroMolecular Medicine 2/2015

01-06-2015 | Original Paper

Circulating MicroRNA Let-7d in Attention-Deficit/Hyperactivity Disorder

Authors: Li Hui Wu, Min Peng, Mei Yu, Qian Lei Zhao, Chao Li, Yu Tong Jin, Yong Jiang, Zhong Yi Chen, Nian Hui Deng, Hui Sun, Xing Zhong Wu

Published in: NeuroMolecular Medicine | Issue 2/2015

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Abstract

Up to date, there has been no molecular signature available in the clinical practice for attention-deficit/hyperactivity disorder (ADHD). To investigate circulating miRNA let-7d significance in ADHD, we investigated serum miRNA let-7d in 35 newly diagnosed ADHD subjects who were randomly selected from 406 patients out of 7450 children, paired with gender- and age-matched control through case–control study. We observed that circulating miRNA let-7d was significantly higher in ADHD subjects than in control (p < 0.05). Higher circulation level of miRNA let-7d was significantly associated with ADHD (odds ratio 16.7; 95 % confidence, p < 0.05). Meanwhile, serum galectin-3 level was down-regulated in ADHD subjects and the subjects with low galectin-3 expression accounted for 66 % in ADHD. The difference of the serum galectin-3 levels between ADHD and non-ADHD groups reached significance (p < 0.05). In 1-year follow-up, a significantly higher rate of clinical improvement was noted in subjects with low level of circulating miRNA let-7d (p < 0.05) than those with high level of circulating miRNA let-7d. Our data demonstrated that miRNA let-7d was elevated in the serum of ADHD subjects, which might be a novel, useful molecule signature for ADHD.
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Metadata
Title
Circulating MicroRNA Let-7d in Attention-Deficit/Hyperactivity Disorder
Authors
Li Hui Wu
Min Peng
Mei Yu
Qian Lei Zhao
Chao Li
Yu Tong Jin
Yong Jiang
Zhong Yi Chen
Nian Hui Deng
Hui Sun
Xing Zhong Wu
Publication date
01-06-2015
Publisher
Springer US
Published in
NeuroMolecular Medicine / Issue 2/2015
Print ISSN: 1535-1084
Electronic ISSN: 1559-1174
DOI
https://doi.org/10.1007/s12017-015-8345-y

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