Head circumference, apolipoprotein E genotype and cognition in the Bavarian School Sisters Study - 24/03/12
, P. Alexopoulos a, 1, S. Wagenpfeil b, H. Bickel a, A. Kurz a
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Abstract |
Background |
The apolipoprotein E (APOE) 
4 allele is correlated with an earlier onset of Alzheimer’s disease symptoms; larger head circumference has been associated with an individual resilience against cognitive impairment.
Methods |
We explored if larger head circumference attenuates the effect of the APOE 4 allele on cognition in 380 Catholic sisters covering the spectrum from normal cognitive performance to severe dementia.
Results |
Linear regression analysis, adjusting for risk factors for cognitive decline, revealed that APOE 4 was correlated with worse cognition and that larger head circumference attenuated the negative effect of the 4 allele on cognitive performance.
Conclusion |
Larger head circumference (i.e. larger brain size) seems to be associated with greater resilience against genetic determinants of cognitive impairment, possibly due to enhanced brain or cognitive reserve.
Le texte complet de cet article est disponible en PDF.Keywords : Brain reserve, Cognitive reserve, Alzheimer’s disease, Gender, Genetics, Risk factors
Plan
Vol 27 - N° 3
P. 219-222 - avril 2012 Retour au numéro
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