title: Total serum cholesterol levels and Alzheimer's dementia in patients with Down syndrome.
abstract: BACKGROUND
  The risk for dementia in Alzheimer's disease (DAD) in adults with Down syndrome (DS) is higher than in the general adult population. Hypercholesterolaemia has been reported as a risk factor for DAD in the general population. This study investigated the role of serum cholesterol levels in the onset of DAD in the DS population.
  
  
  METHODS
  This study investigated total serum cholesterol levels in 179 DS persons (with and without DAD). The possible association between Apolipoprotein E and amyloid beta1-40 and beta1-42 levels was also investigated.
  
  
  RESULTS
  No statistically significant association was found between total serum cholesterol levels and dementia in AD or with amyloid beta levels. However for DS adults with an apoE epsilon4 allele significantly higher serum cholesterol levels were found.
  
  
  CONCLUSIONS
  Hypercholesterolaemia is not a risk factor for DAD in persons with DS. However, DS persons with an apoE epsilon4 allele are susceptible to high serum cholesterol. Such individuals should be screened on a regular basis.
authors.affiliation: Liverpool John Moore University, c/o Greenfields, Monyhull, Birmingham, UK. vprasher@compuserve.com
authors.forename: V P
authors.initials: VP
authors.lastname: Prasher
authors.forename: E
authors.initials: E
authors.lastname: Airuehia
authors.forename: A
authors.initials: A
authors.lastname: Patel
authors.forename: M S
authors.initials: MS
authors.lastname: Haque
mesh_terms: D000293:Adolescent; D000328:Adult; D000483:Alleles; D000544:Alzheimer Disease / Q000097:blood* / Q000235:genetics; D016229:Amyloid beta-Peptides / Q000097:blood*; D001057:Apolipoproteins E / Q000235:genetics; D015415:Biomarkers / Q000097:blood; D002784:Cholesterol / Q000097:blood*; D003704:Dementia / Q000097:blood* / Q000235:genetics; D004314:Down Syndrome / Q000097:blood* / Q000235:genetics; D005260:Female; D005787:Gene Frequency; D006801:Humans; D008297:Male; D008875:Middle Aged; D010446:Peptide Fragments / Q000097:blood*; D055815:Young Adult
chemical_list: D016229:Amyloid beta-Peptides; D001057:Apolipoproteins E; D015415:Biomarkers; D010446:Peptide Fragments; C078592:amyloid beta-protein (1-40); C075222:amyloid beta-protein (1-42); D002784:Cholesterol