A Study With Multimodal Neurobiological Approaches to Explore the Interactions Between Monoamine Transporter Genes and Environmental Factors on Attention Deficit Hyperactivity Disorder.
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 202
- 试验地点
- 2
- 主要终点
- ADHD symptoms
研究概览
简要总结
Previous studies have demonstrated significant associations of attention-deficit hyperactivity disorder (ADHD) with monoamine transporter genes, including dopamine transporter gene (DAT1), norepinephrine transporter gene (SLC6A2), and serotonin transporter gene (SLC6A4) as well as the important role of environmental factors in the pathogenesis of ADHD. Hence, investigating how genes and environments interact with each other may contribute to the understanding of the pathophysiological mechanisms of ADHD. In this 3-year project, investigators will explore the complex gene-environment interplay in ADHD with multimodal neurobiological approaches, including neuropsychology, neuroimaging, and metabolites, in order to identify the crucial pathophysiological pathways from genes to the brain.
详细描述
In the present project, investigators aim to explore the complex gene-environment interplay in children with ADHD to identify the crucial pathophysiological pathways from genes to the brain. To achieve our objective, investigators will use multimodal neurobiological approaches to effectively resolve the four major challenges in exploring gene-environment interactions on ADHD.
- investigators will use multiple levels of neurobiological approaches to identify the interactions between monoamine transporter genes and environment on ADHD, including neuropsychology, neuroimaging, and neuroactive metabolites in plasma, which will provide larger effects than clinical diagnosis.
- investigators will employ correlation analyses to test for the presence of correlations between the monoamine transporter genotypes and the environmental factors.
- investigators will use both categorical (diagnosis of ADHD) and dimensional (inattention and hyperactivity-impulsivity symptoms of ADHD) approaches to assess the interaction effects between monoamine transporter genes and environment.
- investigators will conduct interactions with ageitems to model more accurately the effects of age, which may be non-linearly related to the neurobiological basis of ADHD.
研究设计
- 研究类型
- Observational
- 观察模型
- Case Control
- 时间视角
- Cross Sectional
入排标准
- 年龄范围
- 7 Years 至 16 Years（Child）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Children or adolescents, between 7 and 16 years of age, must have clinical diagnosis of ADHD according to the DSM-5 diagnostic criteria.
- •They have to be medication-naïve. They never receive any medication for the treatment of ADHD.
- •They and their parents must understand sufficiently to communicate properly with the investigators.
- •They must have a Full-Scale Intelligence Quotient(FIQ) score greater than 80.
排除标准
- •They have a major psychiatric comorbid disorder, including schizophrenia, schizoaffective disorder, affective disorders, or autism spectrum disorder.
- •They have a past history of seizure, or they are taking antiepileptic drugs.
- •They have a past history of substance dependence or abuse, including nicotine, alcohol, amphetamine, or any over-the-counter medication.
- •They have a past history of major systemic disease.
- •They are using Chinese herbs or health supplements.
结局指标
主要结局
ADHD symptoms
时间窗: 1 hour
Subjects will be interviewed by Chinese Version of the Kiddie Epidemiologic version of the Schedule for Affective Disorders and Schizophrenia (K-SADS-E)
次要结局
- Neuropsychological testing(15 mins)
- Brain imaging(1 hour)
- Metabolomics profiling(10 mins)