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Clinic-based cases with frontotemporal dementia show increased cerebrospinal fluid tau and high apolipoprotein E epsilon4 frequency, but no tau gene mutations

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Vis graf over relationer

Frontotemporal dementia (FTD) belongs to a group of neurodegenerative disorders known as tauopathies, characterized by intracellular aggregation of hyperphosphorylated tau protein in the brain. Some tauopathies, like Alzheimer's disease (AD), consistently show increased levels of tau protein in cerebrospinal fluid (CSF). However, similar studies in FTD populations have shown variable results, although mutations in the tau gene are identified as causes of disease in certain FTD families. In the present study, a Swedish clinic-based FTD population was investigated with respect to CSF tau levels, apolipoprotein E (APOE) genotype distribution and occurrence of mutations in the tau gene. CSF tau levels were significantly increased among FTD patients (534 +/- 235 pg tau/ml, P < 0.001) (n = 47) compared to controls (316 +/- 137 pg tau/ml) (n = 51). Furthermore, a strong increase in the APOE epsilon4 allele frequency was found in the FTD population, as 52% were epsilon4 carriers, compared to 21% of the controls. However, no mutations in the tau gene were identified. These findings support the present notion of a common pathogenic pathway in the disease processes for several tauopathies, with both APOE epsilon4 and CSF tau being a pathological link between the different disorders. Furthermore, we conclude that mutations in the tau gene are a rare cause of FTD. .

OriginalsprogEngelsk
TidsskriftExperimental Neurology
Vol/bind168
Udgave nummer2
Sider (fra-til)413-8
Antal sider6
ISSN0014-4886
DOI
StatusUdgivet - apr. 2001
Eksternt udgivetJa

ID: 49249776