http://stroke.ahajournals.org/content/early/2013/01/29/STROKEAHA.112.680520.abstract
Abstract
Background and Purpose—Parental
stroke has been related to an increased risk of stroke in the
offspring. This study examines whether parental stroke
is also associated with increased vascular
brain injury and poorer cognitive performance among offspring free of
clinical
stroke.
Methods—Multivariable
regression analyses were used to relate parental stroke to
cross-sectional and change in brain magnetic resonance
imaging measures and cognitive function among
the offspring, with and without adjustment for vascular risk factors.
Results—Stroke- and dementia-free Framingham Offspring (n=1297, age, 61±9 years, 54% women) were studied. Parental stroke by age 65
years was associated with a higher baseline white matter hyperintensity volume (β=0.17±0.08; P=0.027) and with lower visual memory performance (β= −0.80±0.34; P=0.017).
During a 6-year follow-up, parental stroke was also associated with
increase in white matter hyperintensity volume
(odds ratio [OR], 1.87; 95% confidence
interval [CI], 1.03–3.38) and decline in executive function (Trails B–A;
OR, 1.81;
95% CI, 1.06–3.09). The associations with
white matter hyperintensity volume and visual memory attenuated after
additional
adjustment for concomitant vascular risk
factors.
Conclusions—Parental
stroke by age 65 years is associated with increased vascular brain
injury and lower memory in offspring equivalent
to 3 and 7 years of brain aging,
respectively. This may be partly attributed to inheritance of vascular
risk factors.
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