Relationship between the Apolipoprotein AI, B gene polymorphism and the risk of non-traumatic osteonecrosis

  • Yin J
  • Liu Z
  • Zhao S
 et al. 
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Abstract

BACKGROUND: Previous studies suggested that Apolipoprotein AI (ApoAI) and apolipoprotein B (ApoB) gene polymorphisms may result in lipid metabolism disorders. Genetic polymorphisms in these genes may be associated with the occurrence of osteonecrosis. METHODS: We designed a case-control study including 429 patients of osteonecrosis and 368 age- and sex-matched control subjects. Polymerase chain reaction was used to amplify the DNA fragments in promoter -75 G > A of ApoAI gene and EcoR I, Xba I and 3'-VNTR of ApoB gene in osteonecrosis patients and healthy controls. We utilized polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method to genotype these four single nucleotide polymorphisms (SNPs). RESULTS: For -75 G > A polymorphism of ApoAI, AA genotype frequency (0.501) was significantly higher in patients with osteonecrosis than that in control (0.462) subjects (P A of ApoAI gene had higher susceptibility to osteonecrosis than G allele carriers. The genotype and allele frequency distributions showed no significant difference in EcoR I, Xba Iand 3'-VNTR loci of ApoB gene between the osteonecrosis group and control group. CONCLUSION: Our study suggested that ApoAI gene -75G > A polymorphism may be associated with susceptibility to osteonecrosis in Chinese population. However, our results need further investigation with large sample size and various populations.

Author-supplied keywords

  • Apolipoprotein AI
  • Apolipoprotein B
  • Gene polymorphism
  • Molecular epidemiology
  • Non-traumatic osteonecrosis

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Authors

  • Ji Min Yin

  • Zhao Liu

  • Shi Chang Zhao

  • Yan Jie Guo

  • Zhong Tang Liu

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