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In Vitro Modeling of Down Syndrome Neurogenesis Using Human-Induced Pluripotent Stem Cells
Published on: March 7, 2025
838
A multi-level developmental approach to exploring individual differences in Down syndrome: genes, brain, behaviour,
Michael S C Thomas1, Olatz Ojinaga Alfageme2, Hana D'Souza3
1Centre for Brain and Cognitive Development, Birkbeck, University of London, London WC1E 7HX, United Kingdom.
Research in Developmental Disabilities
|July 13, 2020
Summary
Individual differences in Down syndrome (DS) development were studied, linking early language and brain development to later Alzheimer's disease (AD) risk. Findings suggest early brain structure may predict cognitive development in DS.
Area of Science:
- Developmental Psychology
- Genetics
- Neuroscience
Background:
- Individual differences in Down syndrome (DS) development are significant.
- Understanding these variations is crucial for predicting developmental trajectories and later-life health outcomes, such as Alzheimer's disease (AD).
Purpose of the Study:
- To investigate the causes of individual differences in Down syndrome (DS) development.
- To explore links between early development (language, brain structure) and the risk of Alzheimer's disease (AD) in adults with DS.
- To evaluate the influence of genetics (APOE genotype) and environment (SES) on developmental variability.
Main Methods:
- Utilized data from the MacArthur-Bates Communicative Development Inventories (CDI) and Mullen Scales of Early Learning (MSEL) for language development in 84 infants and children with DS.
- Examined the impact of socio-economic status (SES) and apolipoprotein E (APOE) genotype on language development.
- Employed advanced magnetic resonance imaging (MRI) techniques to assess prenatal and neonatal brain structure in DS, linking it to cognitive development.
Main Results:
- Observed significant developmental delay and wide individual differences in receptive and expressive language.
- Socio-economic status (SES) did not reliably predict developmental variability.
- APOE genotype showed no reliable effect, with a weak trend for faster development in carriers of the genotype associated with higher AD risk.
- Established methodological viability for linking early brain structure differences to infant cognitive development.
Conclusions:
- Early brain structure in individuals with Down syndrome (DS) may serve as a potential early marker for cognitive development.
- Further research with larger sample sizes is needed to discern patterns and confirm findings related to genetics and environment.
- A multi-level, multi-method, lifespan developmental approach is essential for understanding Down syndrome variations.
Keywords:
Alzheimer’s diseaseDown syndromeapolipoprotein APOE genebrain imaginggeneticsindividual differencessocio-economic statusvocabulary developmentMore Related Videos
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