Tese de doutoramento em Ciências Biomédicas, apresentada à Faculdade de Medicina da Universidade de Coimbra ; Fundação para a Ciência e Tecnologia, Bolsa de Doutoramento (SFRH/BD/27442/2006)
Mutations in three genes (PSEN1, PSEN2, and APP) have been identified in patients with early-onset (<65years) Alzheimer’s disease (AD). We performed a screening for mutations in the coding regions of presenilins, as well as exons 16 and 17 of the APP gene in a total of 231 patients from the Iberian peninsular with a clinical diagnosis of early onset AD (mean age at onset of 52.9 years; range 31– 64). We found t...
LRRK2 mutations have recently been described in families with Parkinson's disease. Here we show that one of them (G2019S) is present in 6% (7 of 124) unrelated cases of disease in a clinic-based sample series from central Portugal, but not present in 126 controls from the same population. Thus, LRRK2 mutations appear to be a common cause of typical Parkinson's disease and as such will alter clinical practice. ©...
A doença de Alzheimer é a forma de demência mais comum no idoso, afectando cerca de 10% dos indivíduos com 65 anos. Considera-se que tenha uma origem multifactorial, sendo vários os factores que contribuem para a formação das placas senis, bem como das tranças neurofibrilares, características desta patologia. O diagnóstico baseia-se no exame clínico, testes neuropsicológicos e técnicas de imagiologia cerebral, ...
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