Cited by 5Genetics and Neurodevelopmental DisordersAdvanced Neuroimaging Techniques and ApplicationsFetal and Pediatric Neurological Disorders

Relationship between genotype and arcuate fasciculus morphology in six young children with global developmental delay: Preliminary DTI stuy: Genotype and Language Tract Morphology

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Jeong, Jeong-Won, Sundaram, Senthil, Behen, Michael E., Chugani, Harry T.·2016·Journal of Magnetic Resonance Imaging

Abstract

Purpose To investigate whether different genetic mutations observed in children with global developmental delay (GD) are associated with unique patterns of the arcuate fasciculus dysmorphology. Materials and Methods Six children with GD (age: 36.8 ± 14.1 months, 5 boys) having mutations in MID1, CDK4, SFRP1, EN2, RXRG-GLRB, or MECP2, and five children with typical development (TD, age: 38.5 ± 20.5 months, 4 boys) underwent a 3 Tesla MRI including diffusion weighted imaging (DWI). Five language pathway segments in the left hemisphere, “C1: Broca's to Wernicke's area,” “C2: Broca's to premotor area,” “C3: premotor to Wernicke's area,” “C4: Wernicke's to inferior parietal area,” and “C5: premotor to inferior parietal area” were objectively identified using the DWI “maximum a posteriori probability” classifier. Results Affinity propagation clustering analysis found that three arcuate pathway segments, C1,2,4, of MID1, CDK4, EN2, and MECP2 had a similar pattern of volume ratio while those of SFRP1 and RXRG-GLRB had a heterogeneous pattern of volume ratio (net similarity = -0.01). Using receiver operating characteristic curve analysis, the fiber ratios of C1,2,4 showed a high probability to discriminate between GD and TD, yielding an accuracy of 0.91, 0.91, 1.00, respectively. The fiber volumes of C1 and C4 showed a strong correlation with expressive language (R2 = 0.6019; P-value = 0.033) and receptive language (R2 = 0.6379; P-value = 0.028), respectively. Conclusion The findings of the present study provide preliminary evidence to suggest that different segments of the arcuate fasciculus are formed under the regulation of different genes which, when mutated, may result in developmental delay. J. Magn. Reson. Imaging 2016;44:1504–1512.

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  • Genes associated with axon guidance functions, important for refinement of neural circuits including those relevant for speech and language, are found in introgression deserts.

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Authors
Jeong, J.-W., Sundaram, S., Behen, M. E., & Chugani, H. T.
Affiliations
  • Wayne State University (US)
  • Alfred I. duPont Hospital for Children (US)
Corresponding author
Jeong, Jeong-Won
Venue
Journal of Magnetic Resonance Imaging
Publisher
Wiley
Published
2016-06-02
Volume
44
Issue
6
Pages
1504-1512
ISSN
1053-1807 (ISSN-L)
OpenAlex
W2421055376
Cited by
5
References
33
Citations by year
2021: 1 · 2020: 1 · 2019: 1 · 2018: 1 · 2016: 1
FWCI
0.81
Type
journal article
Language
en
Open access
Locations
  • Journal of Magnetic Resonance Imaging (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Neurological Disorders and Stroke (R01-NS089659)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Fetal and Pediatric Neurological Disorders
Keywords
arcuate fasciculus, global developmental delay, genotypes, genetic mutations, language pathways, diffusion tensor imaging, fiber volume content, MID1, CDK4, SFRP1, EN2, MeCP2, expressive language, receptive language, children
MeSH terms
Developmental Disabilities, Child, Preschool, Female, Genotype, Humans, Male, Neural Pathways, Parietal Lobe, Pilot Projects, Sensitivity and Specificity, Temporal Lobe, Reproducibility of Results, Genetic Predisposition to Disease, Diffusion Tensor Imaging, Genetic Association Studies

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