Genetic Screening of the Lipoprotein Lipase Gene for Mutations in Chinese Subjects with or without Hypertriglyceridemia

Yuhong Yang; Yunxiang Mu; Yu Zhao; Xinyu Liu; Lili Zhao; Junmei Wang; Yonghong Xie

doi:10.1016/S1673-8527(07)60041-1

Volume 34 Issue 5

May 2007

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Genetic Screening of the Lipoprotein Lipase Gene for Mutations in Chinese Subjects with or without Hypertriglyceridemia

doi: 10.1016/S1673-8527(07)60041-1

Department of Biochemistry, Tianjin Medical University, Tianjin 300070, China

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Corresponding author: E-mail address: tjxieyh@sina.com (Yonghong Xie)
Received Date: 2006-09-11
Accepted Date: 2006-12-19

Available Online: 2007-06-07

Publish Date: 2007-05-20

Abstract

Abstract

Objective: To investigate the association between the mutations in lipoprotein lipase gene and hypertriglyceridemia (HTG). Methods: The lipoprotein lipase (LPL) gene was screened for mutations in 386 Chinese subjects with (108 cases in the HTG group) or without HTG (278 cases in the control group), by single-strand conformation polymorphism (SSCP) analysis and DNA sequencing. Results: One novel silent mutation L103L, one missense mutation P207L, three splicing mutations Int3/3′-ass/C(-6) → T, and the common S447X polymorphism has been identified in the whole coding region and exon-intron junctions of the LPL gene were examined. Heterozygous P207L found in the HTG group was the first case reported in Asia and subsequently another P207L heterozygote was found in the proband's family, all of which suggested that P207L was one of the causes of familial combined hyperlipidemia, but was not so prevalent as that in French Canadian. Int3/3′-ass/C(-6) → T was found in both groups in the present study although it was regarded as a pathogenic variant to HTG earlier on. Moreover about the beneficial polymorphism S447X, there was also some supportive evidence that the levels of triglycerides (TG) in S447X carriers were significantly lower than noncarriers in the subjects without HTG. Conclusions: The association between theLPL variants and HTG is quite complicated and versatile, genotyping of LPL in a larger-scale screening should be necessary and justifiable.
- lipoprotein lipase,
- mutations,
- Chinese,
- hypertriglyceridemia

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References

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