Article (Scientific journals)
P-selectin Expression Tracks Cerebral Atrophy in Mexican-Americans.
Kochunov, P.; Glahn, D. C.; Hong, L. E. et al.
2012In Frontiers in Genetics, 3, p. 65
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Keywords :
DTI; P-selectin; aging; cerebral atrophy; gene expression; genetics; hypertension
Abstract :
[en] BACKGROUND AND PURPOSE: We hypothesized that the P-selectin (SELP) gene, localized to a region on chromosome 1q24, pleiotropically contributes to increased blood pressure and cerebral atrophy. We tested this hypothesis by performing genetic correlation analyses for 13 mRNA gene expression measures from P-selectin and 11 other genes located in 1q24 region and three magnetic resonance imaging derived indices of cerebral integrity. METHODS: The subject pool consisted of 369 (219F; aged 28-85, average = 47.1 +/- 12.7 years) normally aging, community-dwelling members of large extended Mexican-American families. Genetic correlation analysis decomposed phenotypic correlation coefficients into genetic and environmental components among 13 leukocyte-based mRNA gene expressions and three whole-brain and regional measurements of cerebral integrity: cortical gray matter thickness, fractional anisotropy of cerebral white matter, and the volume of hyperintensive WM lesions. RESULTS: From the 13 gene expressions, significant phenotypic correlations were only found for the P- and L-selectin expression levels. Increases in P-selectin expression levels tracked with decline in cerebral integrity while the opposite trend was observed for L-selectin expression. The correlations for the P-selectin expression were driven by shared genetic factors, while the correlations with L-selectin expression were due to shared environmental effects. CONCLUSION: This study demonstrated that P-selectin expression shared a significant variance with measurements of cerebral integrity and posits elevated P-selectin expression levels as a potential risk factor of hypertension-related cerebral atrophy.
Disciplines :
Genetics & genetic processes
Neurology
Author, co-author :
Kochunov, P.
Glahn, D. C.
Hong, L. E.
Lancaster, J.
Curran, J. E.
Johnson, M. P.
Winkler, Anderson ;  Université de Liège - ULiège > Form. doc. sc. bioméd. & pharma.
Holcomb, H. H.
Kent, J. W. Jr
Mitchell, B.
Kochunov, V.
Olvera, R. L.
Cole, S. A.
Dyer, T. D.
Moses, E. K.
Goring, H.
Almasy, L.
Duggirala, R.
Blangero, J.
More authors (9 more) Less
Language :
English
Title :
P-selectin Expression Tracks Cerebral Atrophy in Mexican-Americans.
Publication date :
2012
Journal title :
Frontiers in Genetics
eISSN :
1664-8021
Publisher :
Frontiers Media S.A., Switzerland
Volume :
3
Pages :
65
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 03 May 2017

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