title: Mapping and Congenic Dissection of Genetic Loci Contributing to Hyperglycemia and Dyslipidemia in Mice.
abstract: BACKGROUND
  Patients with dyslipidemia have an increased risk of developing type 2 diabetes, and diabetic patients often have dyslipidemia. Potential genetic connections of fasting plasma glucose with plasma lipid profile were evaluated using hyperlipidemic mice.
  
  
  METHODS
  225 male F2 mice were generated from BALB/cJ (BALB) and SM/J(SM) Apoe-deficient (Apoe-/-) mice and fed a Western diet for 5 weeks. Fasting plasma glucose and lipid levels of F2 mice were measured before and after 5 weeks of Western diet and quantitative trait locus (QTL) analysis was performed using data collected from these two time points. 144 SNP(single nucleotide polymorphism) markers across the entire genome were typed.
  
  
  RESULTS
  One major QTL (logarithm of odds ratio (LOD): 6.46) peaked at 12.7 cM on chromosome 9,Bglu16, and 3 suggestive QTLs on chromosomes 15, 18 and X were identified for fasting glucose, and over 10 loci identified for lipid traits. Bglu16 was adjacent to a major QTL, Hdlq17, for high-density lipoprotein (HDL) cholesterol (LOD: 6.31, peak: 19.1 cM). A congenic strain with a donor chromosomal region harboring Bglu16 and Hdlq17 on the Apoe-/- background showed elevations in plasma glucose and HDL levels. Fasting glucose levels were significantly correlated with non-HDL cholesterol and triglyceride levels, especially on the Western diet, but only marginally correlated with HDL levels in F2 mice.
  
  
  CONCLUSIONS
  We have demonstrated a correlative relationship between fasting glucose and plasma lipids in a segregating F2 population under hyperlipidemic conditions, and this correlation is partially due to genetic linkage between the two disorders.
authors: Departments of Radiology and Medical Imaging, University of Virginia, Charlottesville, Virginia, United States of America.|Biochemistry & Molecular Genetics, University of Virginia, Charlottesville, Virginia, United States of America.
authors: Weibin
authors: W
authors: Shi
authors: Departments of Radiology and Medical Imaging, University of Virginia, Charlottesville, Virginia, United States of America.
authors: Qian
authors: Q
authors: Wang
authors: Departments of Radiology and Medical Imaging, University of Virginia, Charlottesville, Virginia, United States of America.
authors: Wonseok
authors: W
authors: Choi
authors: Departments of Radiology and Medical Imaging, University of Virginia, Charlottesville, Virginia, United States of America.
authors: Jing
authors: J
authors: Li
mesh_terms: D000818:Animals; D001057:Apolipoproteins E / Q000097:blood / Q000172:deficiency / Q000235:genetics; D001786:Blood Glucose / Q000378:metabolism; D008076:Cholesterol, HDL / Q000097:blood; D002874:Chromosome Mapping; D003433:Crosses, Genetic; D066273:Diet, Western; D050171:Dyslipidemias / Q000097:blood / Q000235:genetics*; D008040:Genetic Linkage; D005819:Genetic Markers; D006943:Hyperglycemia / Q000097:blood / Q000235:genetics*; D008055:Lipids / Q000097:blood; D008297:Male; D051379:Mice; D020297:Mice, Congenic; D008807:Mice, Inbred BALB C; D008809:Mice, Inbred C3H; D008810:Mice, Inbred C57BL; D018345:Mice, Knockout; D020641:Polymorphism, Single Nucleotide; D040641:Quantitative Trait Loci; D014280:Triglycerides / Q000097:blood
chemical_list: D001057:Apolipoproteins E; D001786:Blood Glucose; D008076:Cholesterol, HDL; D005819:Genetic Markers; D008055:Lipids; D014280:Triglycerides