Aug 16, 2006

TAU haplotype and the Saitohin Q7R gene polymorphism do not influence CSF Tau in Alzheimer's disease and are not associated with frontotemporal dementia or Parkinson's disease

Neuro-degenerative Diseases
Annica JohanssonK Blennow


Recent studies have described Saitohin(STH), a gene located in the human TAU gene. The corresponding protein shows a similar tissue expression to tau, which is involved in many neurodegenerative disorders including Alzheimer's disease (AD), frontotemporal dementia (FTD) and Parkinson's disease (PD). A single nucleotide polymorphism in the STH gene has been suggested to be involved in sporadic AD and is in complete linkage disequilibrium with the TAU haplotype H1. A case-control study was performed to further explore the possible involvement of the STH Q7R polymorphism and the extended TAU haplotype in AD, FTD or PD. Patients with AD (n = 398), FTD (n = 96) and PD (n = 105), and controls (n = 186) were genotyped for the STH polymorphism and/or the TAU haplotype. Genotype data were related to levels of total-tau, phospho-tau and Abeta(1-42) in cerebral spinal fluid (CSF) in more than 300 AD patients and to an amount of senile plaques and neurofibrillary tangles in the frontal cortex and hippocampus in patients with autopsy-confirmed AD. The STH Q7R polymorphism and the TAU haplotype were in complete linkage disequilibrium in all patients (AD and FTD) and controls investigated for both genes. There were no significant differences ...Continue Reading

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Mentioned in this Paper

Senile Paranoid Dementia
Gene Polymorphism
Familial Alzheimer Disease (FAD)
Neurofibrillary Degeneration (Morphologic Abnormality)
Pathogenic Organism
Genetic Screening Method
Neurodegenerative Disorders Pathway
Dysequilibrium Syndrome

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