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This study was approved by the ethics committee of the Faculty of Medicine of Universidad Nacional. A cellular mechanism governing the severity of Pelizaeus-Merzbacher disease.
Saray Esther Polo Polo
All patients were male, 6 months to 16 years of age, one of them died by the age of 5 due to complications of a respiratory infection. University of Washington, Seattle; https: Pelizaeus Merzbacher Disease PMD is a chronic pediatric leukoencephalopathy caused by disorders of the axonal myelination and the myelin metabolism in the oligodendrocytes, reported for the first time on by doctor Friedrich Pelizaeus 1 and revisited on by Knicef Merzbacher 2.
Pelizaeus-Merzbacher disease clinical and nosological study.
Ile47IlefsX4 and resulted in a truncated protein product, 4 aminoacids downstream Among other differential diagnosis we can count Krabbe desarrolli, Canavan disease, other leukodystrophies and cerebral palsy.
Abgeviada PMD is characterized in the first stages of disease by nystagmus, hypotonia and tremor in male affected patients, joint progressively by ataxia and spastic quadriparesis in the school age. Laboratory endpoints are shown in Table 2. Q99X affects the cytoplasmic domain while c. Q99X and missense mutation c. Neuroimaging of patients with classic PMD showed evidence of T2 hyperintensities both diffuse desargollo periventricular in the supratentorial withe matter.
Patients desarrlolo from a connatal form of PMD, the most severe phenotype, have histopathological studies revealing complete absence of myelination in the brain, explaining the rapid clinical deterioration and suggesting tan death of this patients may respond to nervous conduction alterations in brain control centers.
PLP1-related inherited dysmyelinating disorders Pelizaeus-Merzbacher disease and spastic paraplegia type 2. PLP1 molecular analysis Complete duplication. To our knowledge, this is not only one of first Latin-American case series but the larger one, presenting the main characteristics of the clinical diagnosis and molecular signatures of PMD male affected patients, being the classical form overall more frequent than the connatal form.
Connatal form of PMD is more severe than the classical form, a verifiable fact in our series, and with a reported expectancy of life lower than the first decade of life. In the physical examination, Mean age at diagnosis was esccala years 5 months, being classic PMD most frequently diagnosed, as compared to the connatal phenotype.
On the other hand, NS patients suffer from desarroollo less harmful condition also caused by large deletions or damaging mutations resulting in loss of PLP1 protein product. The esccala protein gene and myelin disorders in man and animal models. Available for review by the Editors of this journal and are kept within the clinical records of each patient. Pelizaeus-Merzbacher disease, Pelizaeus-Merzbacher-like disease 1, and related hypomyelinating disorders.
Structure and molecular arrangement of proteolipid protein of central nervous system myelin. Survival rates in this patients have been described to be up to the seventh decade of life.
Interestingly, it has been described NS affected individuals to have a multifocal demyelinating neuropathy 812 sometimes being the only clinical feature of the syndrome; NS patients do not present jnicef nystagmus, their spastic paraplegia is mild, affecting primarily the lower limbs, and ataxic compromise may vary. Q99X nonsense variant in two ddland in one patient the c. Cerebral magnetic resonance imaging.
Most of mutations detected on individuals diagnosed with SPG2 are missense 8.
Calaméo – Saray Esther Polo Polo
Note that patients are cited on the tables with their assigned pedigree numbers. PLP1 gene is located in chromosomal region Xq22, with a 17 kb lenght, 7 exons and 6 introns. Its genetic etiology affects the expression of the Proteolipidic Protein type 1 34varying from hemizygous mutations to gene dosage alterations of the PLP1 Xq Clinical and mutational spectrum of Colombian patients with Pelizaeus Merzbacher Disease Translated title es: The espectrum of PLP1 gene mutations in patients with classical form of the Pelizaeus Merzbacher disease.
Z Ges Neurol Psychiatr. Estudios Moleculares y Resultados: Classic PMD affected males also have improved cognitive development, with acceptable speech.
In our sample, two patients had history of cerebral palsy, being an actual comorbidity in only one of them. Mutations in noncoding regions of uniccef proteolipid protein gene in Pelizaeus-Merzbacher disease.
Clinical and mutational spectrum of Colombian patients with Pelizaeus Merzbacher Disease
Molecular studies were used in the majority of the cases to confirm the diagnosis Hobson GM, Kamholz J. Case series presentation Seven individuals ages 6 months to 16 years 4 probands, 3 male relatives of the probandsdiagnosed clinically, paraclinically and molecularly as Pelizaeus Merzbacher patients, attended in different medical care centers in Colombia Fig.
Seven individuals ages 6 months to 16 years 4 probands, desardollo male relatives of the probandsdiagnosed clinically, paraclinically and molecularly as Pelizaeus Merzbacher patients, attended in different medical care centers in Colombia Fig.