MRI Investigations in Attention Deficit Hyperactivity Disorder (ADHD) and High Potential (HP) Children for a Better Therapeutic Approach

Not Applicable

Completed

• Conditions: ADHD
• Interventions: Other: MRI; Other: neuropsychological assessment

• Registration Number: NCT02823782
• Lead Sponsor: Hospices Civils de Lyon

Brief Summary

Impulsivity and/or hyperactivity in children has become one of the main clinical symptom for consultation, among the most frequent, in general or pediatric medicine. Among the different clinical forms of instability, ADHD appears to be an especially disabling condition for the development of the child, both in psychomotor, cognitive, emotional and relational aspects. Further, a significant link between ADHD children and some children with High Potential (HP) is observed. HP children show overall ahead cognitive developments compared to children with the same age. In these children, as well as in children with ADHD, an attention vulnerability, psychomotor deficits are noted, as well as emotional and relational deficits that significantly contrasted with some of their cognitive skills. Regarding the HP, the hypothesis is that children with significantly heterogeneous results (Complex) to the Wechsler IV scales are affected by this shift, and hence, by the difficulty of a differential diagnosis with ADHD, unlike those whose intelligence quotient (IQ) results that are more homogeneous (Laminar).

The goal of this work was to study a population of 80 children aged from 8 to 12 years (20 subjects per group) to evaluate the functional and structural brain development by:

* Functional magnetic resonance imaging (fMRI) acquisitions with cognitive stimulations, involving attention, working memory and semantic processing, and emotional stimulations,

* fMRI acquisitions at rest (without activation),

* diffusion tensor magnetic resonance imaging (DTI) acquisitions,

* 3D anatomic acquisitions. Identification of developmental differences in certain cortical brain areas (eg, prefrontal vs parietal), white matter fiber bundles or functional networks preferentially used by one or other of these groups, will help to better understand this disease, and to improve the differential diagnosis in order to implement a more appropriate and personalized management of the patients via new therapeutic strategies.

Detailed Description

Not available

Study Timeline

• Study Start: 2013-05
• Primary Completion: 2015-02
• Study Completion: 2015-02
• Status Verified: 2016-06
• Study First Submitted: 2016-06-09
• Study First Submitted QC: 2016-06-30
• Last Update Submitted: 2016-06-30
• Study First Posted: 2016-07-06
• Last Update Posted: 2016-07-06

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 74

Inclusion Criteria

• Right-hand 4 groups :
• Laminar HP : IQ > 130 and difference between Verbal Comprehension Index (VCI) and Perceptual Reasoning Index (PRI) < 9
• Complex HP : IQ > 130 and difference between VCI and PRI >15
• ADHD : 90 < IQ <110
• Controls : 90 < IQ <110

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Exclusion Criteria

• Subjects with any psychiatric disorders except ADHD,
• Subjects with known learning deficits (dyslexia, dysphasia...), attention deficits except for ADHD group
• Subjects with claustrophobia or magnetic devices
• Children with out both parental agreements

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
ADHD	MRI	Structural and functional MRI markers
Complex HP	MRI	Structural and functional MRI markers
ADHD	neuropsychological assessment	Structural and functional MRI markers
Control	neuropsychological assessment	Structural and functional MRI markers
Laminar HP	MRI	Structural and functional MRI markers
Laminar HP	neuropsychological assessment	Structural and functional MRI markers
Control	MRI	Structural and functional MRI markers
Complex HP	neuropsychological assessment	Structural and functional MRI markers

Primary Outcome Measures

Name	Time	Method
Cortical gray matter (GM) volumes	Day 1	using the software VBM (Voxel Based Morphometry)
Functional MRI activity during cognitive tests	Day 1	using the software SPM (Statistical Parametric Mapping)
Functional connectivity in resting-state fMRI	Day 1	using the graph-theory methods
Subcortical gray matter (GM) volumes	Day 1	using the software VBM (Voxel Based Morphometry)
Functional MRI activity during emotional tests	Day 1	using the software SPM (Statistical Parametric Mapping)
Microstructural connectivity of white matter (WM) fiber bundles	Day 1	measured by diffusion tensor imaging. Diffusion metrics maps are compared using the software TBSS (Track Based Spatial Statistics),

Trial Locations

Locations (1)

Service de psychiatrie infantile, Hôpital Pierre Wertheimer, 59 Boulevard Pinel; 🇫🇷 Bron, France