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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.

Artikel i vetenskaplig tidskrift
Författare Annica Johansson
Henrik Zetterberg
Anna Håkansson
Hans Nissbrandt
Kaj Blennow
Publicerad i Neuro-degenerative diseases
Volym 2
Nummer/häfte 1
Sidor 28-35
ISSN 1660-2854
Publiceringsår 2005
Publicerad vid Institutionen för klinisk neurovetenskap, Sektionen för laborativ neurovetenskap
Institutionen för fysiologi och farmakologi, Avdelningen för farmakologi
Sidor 28-35
Språk en
Länkar dx.doi.org/10.1159/000086428
Ämnesord Aged, Alzheimer Disease, cerebrospinal fluid, genetics, Amyloid beta-Protein, genetics, Brain, metabolism, physiopathology, Brain Chemistry, genetics, Case-Control Studies, DNA Mutational Analysis, Dementia, cerebrospinal fluid, genetics, Female, Genetic Markers, genetics, Genetic Predisposition to Disease, genetics, Genetic Screening, Genotype, Haplotypes, genetics, Humans, Male, Middle Aged, Mutation, genetics, Parkinson Disease, cerebrospinal fluid, genetics, Peptide Fragments, genetics, Polymorphism, Genetic, genetics, Predictive Value of Tests, tau Proteins, cerebrospinal fluid, genetics
Ämneskategorier Neurokemi

Sammanfattning

BACKGROUND: 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. OBJECTIVE: 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. METHODS: 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. RESULTS: 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 in genotype or allele distributions in AD, FTD or PD cases compared to controls. Neither TAU haplotype nor STH influenced CSF levels of total-tau, phospho-tau and Abeta(1-42) significantly. In AD patients with neuropathological scores of plaque and tangles, no associations with TAU haplotype and STH were found. CONCLUSION: We found no evidence that could support a major pathogenic role of STH and TAU haplotype in AD, FTD or PD.

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