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Spinocerebellar ataxia type 7 (SCA7) is an autosomal dominant disease characterized by progressive cerebellar ataxia and macular degeneration causing progressive blindness. It accounts for 1 to 11.6 % of spinocerebellar ataxias (SCAs) cases worldwide and for 7.4 % of SCA7 cases in Mexico. We identified a cluster of SCA7 families who resided in a circumscribed area of Veracruz and investigated whether...
The etiology of Alzheimer’s disease (AD) is complex. To date, molecular genetic studies in several families affected with AD have identified three genes associated with highly penetrant early-onset AD: Presenilin 1 (PSEN1), Presenilin 2 (PSEN2) and β-amyloid precursor protein (APP); and one gene (apolipoprotein E) associated with late-onset AD. Molecular analysis of the PSEN1 gene was performed by...
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