Cited by 61Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchGenetic Associations and Epidemiology

The −48 C/T polymorphism in the presenilin 1 promoter is associated with an increased risk of developing Alzheimer's disease and an increased Aβ load in brain

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Lambert, Jean-Charles, Mann, David M A, Harris, Judith M, Chartier-Harlin, Marie-Christine, Cumming, Alistair, Coates, John, Lemmon, Helen, StClair, David +2 more·2001·Journal of Medical Genetics

Abstract

Mutations in the presenilin 1 gene (PS1) account for the majority of early onset, familial, autosomal dominant forms of Alzheimer's disease (AD), whereas its role in other late onset forms of AD remains unclear. A -48 C/T polymorphism in the PS1 promoter has been associated with an increased genetic risk in early onset complex AD and moreover has been shown to influence the expression of the PS1 gene. This raises the possibility that previous conflicting findings from association studies with homozygosity for the PS1 intron 8 polymorphism might be the result of linkage disequilibrium with the -48 CC genotype. Here we provide further evidence of increased risk of AD associated with homozygosity for the -48 CC genotype (odds ratio=1.6). We also report a phenotypic correlation with Abeta(40), Abeta(42(43)), and total Abeta load in AD brains. The -48 CC genotype was associated with 47% greater total Abeta load (p<0.003) compared to CT + TT genotype bearers. These results suggest that the -48 C/T polymorphism in the PS1 promoter may increase the risk of AD, perhaps by altering PS1 gene expression and thereby influencing Abeta load.

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Crossref · 10.1136/jmg.38.6.353

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  • Oligomeric Aβ rather than fibril Aβ is regarded as the toxic species of this peptide.

    “oligomeric Aβ rather than fibril Aβ is regarded as the toxic species of this peptide [143,144,145,146].”

    From Mitochondrial Oxidative and Nitrosative Stress and Alzheimer Disease (2020) · cites this paper as [145]

    The Discussion reports increased Aβ deposition associated with the PS1 promoter polymorphism, and the Abstract discusses Aβ42(43) as a species suspected to initiate plaque formation; neither passage compares oligomeric and fibrillar Aβ toxicity. Searches for oligomeric Aβ and for soluble oligomers versus fibrillar amyloid found no passage addressing that comparison. Page numbers were not available in our copy. (LLM, conf=0.72)

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Research works printed but not linked: 1

  1. Iwatsubo T, Odaka N, Suzuki N, Mizusawa H, Nukina N, Ihara Y. Visualisation of A (42,43)-positive and A 40- positive senile plaques with end-specific A monoclonal antibodies: evidence that an initially deposited species is A 1-42(43). Neuron 1995;13:45-53.

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Authors
Lambert, J.-C., Mann, D. M. A., Harris, J. M., Chartier-Harlin, M.-C., Cumming, A., Coates, J., Lemmon, H., StClair, D., Iwatsubo, T., & Lendon, C.
Affiliations
  • Inserm (FR)
  • aMolecular Psychiatry Department, Division of Neuroscience, Queen Elizabeth Psychiatry Hospital, University of Birmingham, Birmingham B15 2QZ, UK, bLaboratory Medicine Academic Group, Department of Medicine, Stopford Building, University of Manchester, Oxford Road, Manchester M13 9PT, UK, cINSERM 508, Institut Pasteur de Lille, 1 rue du Professeur Calmette, BP 245, 59019 Lille Cédex, France, dDepartment of Mental Health, Foresterhill, University of Aberdeen, Aberdeen AB25 2ZD, UK, eDepartment of N
Venue
Journal of Medical Genetics
Publisher
BMJ
Published
2001-06-01
Volume
38
Issue
6
Pages
353-355
ISSN
  • 0022-2593 (ISSN-L)
  • 1468-6244
OpenAlex
W2147663114
Cited by
61
References
21
Citations by year
2025: 1 · 2023: 1 · 2020: 1 · 2019: 1 · 2018: 2 · 2017: 4 · 2016: 1 · 2015: 1 · 2013: 4 · 2012: 1
FWCI
3.98
Type
journal article
Language
en
Open access
Locations
  • Journal of Medical Genetics (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • University of Birmingham Research Portal (University of Birmingham) (submittedVersion)
  • Research Explorer (The University of Manchester) (submittedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
Keywords
presenilin 1, Alzheimer's disease, genetic risk, Aβ40, amyloid-beta 42, linkage disequilibrium, late-onset Alzheimer's disease
MeSH terms
Aged, Alzheimer Disease, Brain, Female, Gene Frequency, Genotype, Humans, Male, Membrane Proteins, Promoter Regions, Genetic, Amyloid beta-Peptides, Age of Onset, Genetic Predisposition to Disease, Polymorphism, Single Nucleotide, Presenilin-1

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