Mapping genetic loci that regulate lipid levels in a NZB/B1NJxRF/J intercross and a combined intercross involving NZB/B1NJ, RF/J, MRL/MpJ, and SJL/J mouse strains.

Mapping genetic loci that regulate lipid levels in a NZB/B1NJxRF/J intercross and a combined intercross involving NZB/B1NJ, RF/J, MRL/MpJ, and SJL/J mouse strains. Research Abstract Details 

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Mapping genetic loci that regulate lipid levels in a NZB/B1NJxRF/J intercross and a combined intercross involving NZB/B1NJ, RF/J, MRL/MpJ, and SJL/J mouse strains. Abstract Text:

Jon E Wergedal,Cheryl L Ackert-Bicknell,Wesley G Beamer,Subburaman Mohan,David J Baylink,Apurva K Srivastava,

The NZB/B1NJ (NZB) mouse strain exhibits high cholesterol and HDL levels in blood compared with several other strains of mice. To study the genetic regulation of blood lipid levels, we performed a genome-wide linkage analysis in 542 chow-fed F2 female mice from an NZBxRF/J (RF) intercross and in a combined data set that included NZBxRF and MRL/MpJxSJL/J intercrosses. In the NZBxRF F2 mice, the cholesterol and HDL concentrations were influenced by quantitative trait loci (QTL) on chromosome (Chr) 5 [logarithm of odds (LOD) 17-19; D5Mit10] that was in the region identified earlier in crosses involving NZB mice, but two QTLs on Chr 12 (LOD 4.7; D12Mit182) and Chr 19 (LOD 5.7; D19Mit1) were specific to the NZBxRF intercross. Triglyceride levels were affected by two novel QTLs at D12Mit182 (LOD 8.7) and D15Mit13 (LOD 3.5). The combined-cross linkage analysis (1,054 mice, 231 markers) 1) identified four shared QTLs (Chrs 5, 7, 14, and 17) that were not detected in one of the parental crosses and 2) improved the resolution of two shared QTLs. In summary, we report additional loci regulating lipid levels in NZB mice that had not been identified earlier in crosses involving the NZB strain of mice. The identification of shared loci from multiple crosses increases confidence toward finding the QTL gene.

Mapping genetic loci that regulate lipid levels in a NZB/B1NJxRF/J intercross and a combined intercross involving NZB/B1NJ, RF/J, MRL/MpJ, and SJL/J mouse strains. Publishing Authors By Initials

JE Wergedal,CL Ackert-Bicknell,WG Beamer,S Mohan,DJ Baylink,AK Srivastava,

For similar genetic phenomena: variation (genetics) research abstracts see: genetic phenomena: variation (genetics) research

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Mapping genetic loci that regulate lipid levels in a NZB/B1NJxRF/J intercross and a combined intercross involving NZB/B1NJ, RF/J, MRL/MpJ, and SJL/J mouse strains. Journal Published:

PUBLICATION TYPE: Research Support, U.S. Gov't,

Journal: Journal of lipid research

VOLUME: 48

Page Numbers: 1724-34

Journal Abbreviation: J. Lipid Res.

ISSN: 0022-2275

DAY: 13

MONTH: 05

YEAR: 2007

Mapping genetic loci that regulate lipid levels in a NZB/B1NJxRF/J intercross and a combined intercross involving NZB/B1NJ, RF/J, MRL/MpJ, and SJL/J mouse strains. Information

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LANGUAGE: eng

NlmUniqueID: 376606

Mapping genetic loci that regulate lipid levels in a NZB/B1NJxRF/J intercross and a combined intercross involving NZB/B1NJ, RF/J, MRL/MpJ, and SJL/J mouse strains. Keywords Mesh Terms:

KEYWORDS: Variation (Genetics)

MESH TERMS: metabolism

Chemical & Substance for Abstract: Mapping genetic loci that regulate lipid levels in a NZB/B1NJxRF/J intercross and a combined intercross involving NZB/B1NJ, RF/J, MRL/MpJ, and SJL/J mouse strains. Information

Substance Name: Cholesterol

Registry Number: 57-88-5

Grant and Affiliation Information for Mapping genetic loci that regulate lipid levels in a NZB/B1NJxRF/J intercross and a combined intercross involving NZB/B1NJ, RF/J, MRL/MpJ, and SJL/J mouse strains.

AFFILIATION: Musculoskeletal Disease Center, Loma Linda VA Health Care Systems, Loma Linda, CA, USA.

Country: United States

AGENCY: United States NIAMS

GRANT: AR-46204

ACRONYM: AR

MEDLINETA: J Lipid Res

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