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Defeitos congénitos de glicosilação (cdg) em portugal: a ponta do iceberg

Síndroma de Zellweger

Os autores apresentam o caso de um recém-nascido do sexo masculino com hipotonia severa, sucção débil, convulsões, facies dismórfico ehepatomegalia. Esttidos subsequentes revelaram, leucodistrofia, disfunção hepática, aumento dos ácidos gordos de cadeia muito longa (AGCML) ediminuição da actividade enzimática da dihidroxiacetonafosfato-aciltransferase (DHAP-AT) nos fibroblastos. Os resultados laboratoriais e a ...

Can power laws help us understand gene and proteome information?

Proteins are biochemical entities consisting of one or more blocks typically folded in a 3D pattern. Each block (a polypeptide) is a single linear sequence of amino acids that are biochemically bonded together. The amino acid sequence in a protein is defined by the sequence of a gene or several genes encoded in the DNA-based genetic code. This genetic code typically uses twenty amino acids, but in certain organ...

A síndrome de Smith-Lemli-Opitz: características fenotípicas e genotípicas dos ...

A síndrome de Smith-Lemli-Opitz (SLOS) é uma síndrome polimalformativa de transmissão autossómica recessiva causada por um défice metabólico da biossíntese do colesterol, que se caracteriza por dismorfias craniofaciais, anomalias congénitas de vários órgãos (salientando-se as do esqueleto e do aparelho urogenital), restrição de crescimento intra-uterino (RCIU), alterações comportamentais e atraso mental. É caus...

Multi-dimensional scaling applied to histogram-based DNA analysis

This paper aims to study the relationships between chromosomal DNA sequences of twenty species. We propose a methodology combining DNA-based word frequency histograms, correlation methods, and an MDS technique to visualize structural information underlying chromosomes (CRs) and species. Four statistical measures are tested (Minkowski, Cosine, Pearson product-moment, and Kendall τ rank correlations) to analyze t...

Histogram-based DNA analysis for the visualization of chromosome, genome and sp...

We describe a novel approach to explore DNA nucleotide sequence data, aiming to produce high-level categorical and structural information about the underlying chromosomes, genomes and species. The article starts by analyzing chromosomal data through histograms using fixed length DNA sequences. After creating the DNA-related histograms, a correlation between pairs of histograms is computed, producing a global co...

De Barsy syndrome and ATP6V0A2-CDG

Comment on: Eur J Hum Genet. 2009 Sep;17(9):1099-110