Abstract:
BACKGROUND AND PURPOSE:It has been suggested that the interleukin-1A (IL-1A) allele 2 is a risk factor for Alzheimer's disease (AD). Because cerebral amyloid angiopathy-related hemorrhage (CAAH) often coexists with AD, we examined the IL-1A polymorphism in CAAH. METHODS:In a case-control study, patients with pathologically verified CAAH, AD patients without intracerebral hemorrhage, and neuropathologically normal control subjects were studied. DNA was extracted from brain tissue, and IL-1A was genotyped. Logistic regression was used to examine the IL-1A polymorphism in CAAH patients with and without AD compared with AD and non-AD control subjects. RESULTS:There were 42 patients with CAAH, 232 AD patients, and 167 non-AD control subjects. In age-adjusted analyses, there was no association between possession of IL-1A allele 2 and risk of CAAH compared with AD control subjects (odds ratio [OR], 0.94; 95% confidence interval [CI], 0.45 to 1.97; P=0.87) or non-AD control subjects (OR, 0.94; 95% CI, 0.47 to 1.87; P=0.86). Stratifying for the presence of apolipoprotein E epsilon2 or epsilon4 demonstrated the known increased risk of CAAH from these lipoprotein E alleles. Subgroup analyses demonstrated a nonsignificant excess of the IL-1A 2,2 genotype in patients with CAAH and AD compared with those CAAH patients who did not have histological evidence indicating AD (OR, 2.17; 95% CI, 0.15 to 122.3; P=0.64). Comparisons between CAAH patients with AD and AD control subjects and between CAAH patients without AD and non-AD control subjects did not demonstrate an association between CAAH and possession of either the IL-1A allele 2 or the 2,2 genotype. CONCLUSIONS:The IL-1A allele 2 or 2,2 genotype does not appear to be a major risk factor for CAAH.
journal_name
Strokejournal_title
Strokeauthors
McCarron MO,Stewart J,McCarron P,Love S,Vinters HV,Ironside JW,Mann DM,Graham DI,Nicoll JAdoi
10.1161/01.STR.0000089294.85447.1Esubject
Has Abstractpub_date
2003-10-01 00:00:00pages
e193-5issue
10eissn
0039-2499issn
1524-4628pii
01.STR.0000089294.85447.1Ejournal_volume
34pub_type
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