Rat model of familial combined hyperlipidemia as a result of comparative mapping.
Total genome scan was carried out in 266 F2 intercrosses from the Prague hypertriglyceridemic (HTG) rat that shares several clinical characteristics with human metabolic syndrome. Two loci for plasma triglycerides (TG) were localized on chromosome 2 (Chr 2) (LOD 4.4, 3.2). The first locus overlapped with the rat syntenic region of the human locus for the metabolic syndrome and for small, dense LDL, while the second overlapped with the syntenic region of another locus for small, dense LDL in humans by the comparative mapping approach. Loci for TG on rat Chr 13 (LOD 3.3) and Chr 1 (LOD 2.7) overlapped with the syntenic region of loci for human familial combined hyperlipidemia (FCHL) in Finnish and Dutch populations, respectively. The concordances of loci for TG localized in this study with previously reported loci for FCHL and its related phenotypes are underlying the generalized importance of these loci in dyslipidemia. These data suggest the close relationship between dyslipidemia in HTG rats and human FCHL, establishing a novel animal model for exploration of pathophysiology and therapy based on genomic determinants.
Ueno
Takahiro
T
Centre de recherche du Centre hospitalier de l'Université de Montréal, Montreal, Quebec, Canada.
Tremblay
Johanne
J
Kunes
Jaroslav
J
Zicha
Josef
J
Dobesova
Zdenka
Z
Pausova
Zdenka
Z
Deng
Alan Y
AY
Sun
Yu-Lin
YL
Jacob
Howard J
HJ
Hamet
Pavel
P
D000818:Animals; D002784:Cholesterol / Q000097:blood; D002874:Chromosome Mapping / Q000379:methods*; D004195:Disease Models, Animal; D005260:Female; D008040:Genetic Linkage / Q000235:genetics; D005819:Genetic Markers / Q000235:genetics; D005820:Genetic Testing / Q000379:methods; D016678:Genome; D006801:Humans; D006950:Hyperlipidemia, Familial Combined / Q000097:blood / Q000235:genetics* / Q000473:pathology; D008297:Male; D010641:Phenotype; D040641:Quantitative Trait Loci / Q000235:genetics; D051381:Rats; D011917:Rats, Inbred Lew; D017208:Rats, Wistar; D012727:Sex Characteristics; D014280:Triglycerides / Q000097:blood
D005819:Genetic Markers; D014280:Triglycerides; D002784:Cholesterol