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Genome-wide linkage analysis of pulse pressure in American Indians: the Strong Heart Study.

Abstract：

BACKGROUND:Pulse pressure, a measure of central arterial stiffness and a predictor of cardiovascular mortality, has known genetic components. METHODS:To localize the genetic effects of pulse pressure, we conducted a genome-wide linkage analysis of 1,892 American-Indian participants of the Strong Heart Family Study (SHFS). Blood pressure was measured three times and the average of the last two measures was used for analyses. Pulse pressure, the difference between systolic blood pressure (SBP) and diastolic blood pressure (DBP), was log-transformed and adjusted for the effects of age and sex within each study center. Variance component linkage analyses were performed using marker allele frequencies derived from all individuals and multipoint identity-by-descent matrices calculated in Loki. RESULTS:We identified a quantitative-trait locus influencing pulse pressure on chromosome 7 at 37 cM (marker D7S493, LOD = 3.3) and suggestive evidence of linkage on chromosome 19 at 92 cM (marker D19S888, LOD = 1.8). CONCLUSIONS:The signal on 7p15.3 overlaps positive findings for pulse pressure among Utah population samples, suggesting that this region may harbor gene variants for blood pressure related traits.

journal_name

Am J Hypertens

journal_title

American journal of hypertension

authors

Franceschini N,MacCluer JW,Rose KM,Rutherford S,Cole SA,Laston S,Göring HH,Diego VP,Roman MJ,Lee ET,Best LG,Howard BV,Fabsitz RR,North KE

doi

10.1038/ajh.2007.34

subject

Has Abstract

pub_date

2008-02-01 00:00:00

pages

194-9

issue

2

eissn

0895-7061

issn

1941-7225

pii

ajh200734

journal_volume

21

pub_type

杂志文章

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