DPSPDNT - Posters/abstracts em congressos nacionais
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Browsing DPSPDNT - Posters/abstracts em congressos nacionais by Author "Almeida, J."
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- Copy number variants involving components of the glutamatergic synaptic pathway in ASD patientsPublication . Oliveira, B.A.; Conceição, I.C.; Correia, C.A.; Café, C.; Almeida, J.; Mouga, S.; Duque, F.; Oliveira, G.; Vicente, A.M.Copy Number Variants (CNVs) play an important role in susceptibility to Autism Spectrum Disorders (ASD), in particular when deleting or duplicating genes involved in synaptic structure and function such as glutamatergic synapse genes. Identifying CNVs of etiologic relevance for ASD that include glutamatergic genes may contribute to the understanding of glutamate-related pathogenic mechanisms in this disorder.
- Differential diagnosis of Autism Spectrum Disorder (ASD) by CNV detection – can early diagnosis be improved?Publication . Kwiatkowska, K.; Conceição, I.C.; Rodrigues, A.C.; Picanço, I.; Marques, I.; Melo, J.; Ferreira, S.; Café, C.; Almeida, J.; Mouga, S.; Oliveira, G.; Vicente, A.M.Autism Spectum Disorder (ASD) is an impairment in neurodevelopment that can be recognized in the first years of life. Symptoms are diverse and vary in severity, determining prognosis and influencing the integration in the community. ASD is characterized by difficulties in interpersonal interaction, verbal and nonverbal communication, and by uncommon interests, inappropriate and uncontrolled behaviors, and repetitive activities. Specific and early diagnosis allows early and effective intervention that improves learning, communication and social skills of autistic children.
- Expression Profile of Circulating miRNAs in Autism Spectrum Disorders Population samplePublication . Conceição, I.C.; Rodrigues, A.C.; Kwiatkowska, K.; Picanço, I.; Café, C.; Almeida, J.; Mouga, S.; Enguita, F.J.; Oliveira, G.; Vicente, A.M.Autism Spectrum Disorder (ASD) is a common complex disorder, highly heterogeneous and with unclear etiology. While many different rare variants are known to be etiological factors for ASD, they don’t completely explain the genetic variance in this disorder, and common genetic variants could not, thus far, be identified. The possible contribution of epigenetic factors, such as deregulated miRNAs expression, should be addressed. miRNAs are small noncoding RNA molecules that negatively regulate gene expression via degradation or translational repression of their target messenger RNAs. miRNAs play critical roles in several biological processes, and are associated with human pathology. Recent studies have suggested that miRNAs in plasma and serum might be derived from circulating blood cells under healthy conditions, but might be released from pathological tissues during illness. The strong correlation between circulating and tissue miRNAs indicates that circulating miRNAs might be biomarkers for diseases, including central nervous system disorders. We are currently assessing miRNA profiles in plasma from ASD patients and patients with other neurodevelopmental disabilities (eg. psychomotor developmental delay, intellectual disability, etc).
- Use of machine leaning approaches to explore genetic and phenotypic associations for Autism Spectrum DisorderPublication . Asif, M.; Conceição, I.C.; Machado, C.; Pereira, P.; Café, C.; Almeida, J.; Mouga, S.; Oliveira, G.; Couto, F.; Vicente, A.M.Introduction: Autism Spectrum Disorder (ASD) is a neurodevelopmental disorder of high complexity ASD is characterized by impaired social interaction and communication and by stereotyped behaviors, and a high heterogeneity in clinical presentation. It is hypothesized that such complex heterogeneous phenotypic behaviors are associated with genetic factors. To further dissect the complex correlations between phenotype and genotype in ASD, in the current study we used powerful machine learning algorithms, like decision trees, to integrate clinical information from diagnostic instruments like the ADI-R and the ADOS as well as adaptive behavior and cognitive scales (VABS and WISC) with genetic data (Copy Number Variants, CNVs). ASD traits in parents were assessed using specific tools SRS and PSPQ.