title: Quantitative trait locus analysis for hemostasis and thrombosis.
abstract: Susceptibility to thrombosis varies in human populations as well as many in inbred mouse strains. The objective of this study was to characterize the genetic control of thrombotic risk on three chromosomes. Previously, utilizing a tail-bleeding/rebleeding assay as a surrogate of hemostasis and thrombosis function, three mouse chromosome substitution strains (CSS) (B6-Chr5(A/J), Chr11(A/J), Chr17(A/J)) were identified (Hmtb1, Hmtb2, Hmtb3). The tail-bleeding/rebleeding assay is widely used and distinguishes mice with genetic defects in blood clot formation or dissolution. In the present study, quantitative trait locus (QTL) analysis revealed a significant locus for rebleeding (clot stability) time (time between cessation of initial bleeding and start of the second bleeding) on chromosome 5, suggestive loci for bleeding time (time between start of bleeding and cessation of bleeding) also on chromosomes 5, and two suggestive loci for clot stability on chromosome 17 and one on chromosome 11. The three CSS and the parent A/J had elevated clot stability time. There was no interaction of genes on chromosome 11 with genes on chromosome 5 or chromosome 17. On chromosome 17, twenty-three candidate genes were identified in synteny with previously identified loci for thrombotic risk on human chromosome 18. Thus, we have identified new QTLs and candidate genes not previously known to influence thrombotic risk.
authors.affiliation: Department of Molecular Cardiology, Joseph J. Jacobs Center for Thrombosis and Vascular Biology, Cleveland, OH 44195, USA.
authors.forename: Qila
authors.initials: Q
authors.lastname: Sa
authors.forename: Erika
authors.initials: E
authors.lastname: Hart
authors.forename: Annie E
authors.initials: AE
authors.lastname: Hill
authors.forename: Joseph H
authors.initials: JH
authors.lastname: Nadeau
authors.forename: Jane L
authors.initials: JL
authors.lastname: Hoover-Plow
mesh_terms: D000483:Alleles; D000818:Animals; D033481:Chromosomes, Mammalian / Q000235:genetics; D004262:DNA Restriction Enzymes / Q000378:metabolism; D005819:Genetic Markers; D006487:Hemostasis / Q000235:genetics*; D051379:Mice; D008810:Mice, Inbred C57BL; D018895:Microsatellite Repeats / Q000235:genetics; D012150:Polymorphism, Restriction Fragment Length; D040641:Quantitative Trait Loci / Q000235:genetics*; D013927:Thrombosis / Q000235:genetics*
chemical_list: D005819:Genetic Markers; D004262:DNA Restriction Enzymes
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