Multiple biomarkers and risk of clinical and subclinical vascular brain injury: the Framingham Offspring Study.
Circulation
; 125(17): 2100-7, 2012 May 01.
Article
em En
| MEDLINE
| ID: mdl-22456473
ABSTRACT
BACKGROUND:
Several biomarkers have been individually associated with vascular brain injury, but no prior study has explored the simultaneous association of a biologically plausible panel of biomarkers with the incidence of stroke/transient ischemic attack and the prevalence of subclinical brain injury. METHODS ANDRESULTS:
In 3127 stroke-free Framingham offspring (age, 59±10 years; 54% female), we related a panel of 8 biomarkers assessing inflammation (C-reactive protein), hemostasis (D-dimer and plasminogen activator inhibitor-1), neurohormonal activity (aldosterone-to-renin ratio, B-type natriuretic peptide, and N-terminal proatrial natriuretic peptides), and endothelial function (homocysteine and urinary albumin/creatinine ratio) measured at the sixth examination (1995-1998) to risk of incident stroke/transient ischemic attack. In a subset of 1901 participants with available brain magnetic resonance imaging (1999-2005), we further related these biomarkers to total cerebral brain volume, covert brain infarcts, and large white-matter hyperintensity volume. During a median follow-up of 9.2 years, 130 participants experienced incident stroke/transient ischemic attack. In multivariable analyses adjusted for stroke risk factors, the biomarker panel was associated with incident stroke/transient ischemic attack and with total cerebral brain volume (P<0.05 for both) but not with covert brain infarcts or white-matter hyperintensity volume (P>0.05). In backward elimination analyses, higher log-B-type natriuretic peptide (hazard ratio, 1.39 per 1-SD increment; P=0.002) and log-urinary albumin/creatinine ratio (hazard ratio, 1.31 per 1-SD increment; P=0.004) were associated with increased risk of stroke/transient ischemic attack and improved risk prediction compared with the Framingham Stroke Risk Profile alone; when the <5%, 5% to 15%, or >15% 10-year risk category was used, the net reclassification index was 0.109 (P=0.037). Higher C-reactive protein (ß=-0.21 per 1-SD increment; P=0.008), D-dimer (ß=-0.18 per 1-SD increment; P=0.041), total homocysteine (ß=-0.21 per 1-SD increment; P=0.005), and urinary albumin/creatinine ratio (ß=-0.15 per 1-SD increment; P=0.042) were associated with lower total cerebral brain volume.CONCLUSION:
In a middle-aged community sample, we identified multiple biomarkers that were associated with clinical and subclinical vascular brain injury and could improve risk stratification.
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Encéfalo
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Lesões Encefálicas
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Biomarcadores
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Ataque Isquêmico Transitório
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Acidente Vascular Cerebral
Tipo de estudo:
Etiology_studies
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Incidence_studies
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Observational_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Aged
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Female
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Humans
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Male
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Middle aged
País/Região como assunto:
America do norte
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article