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Chinese Journal of Clinicians(Electronic Edition) ›› 2020, Vol. 14 ›› Issue (12): 953-961. doi: 10.3877/cma.j.issn.1674-0785.2020.12.001

Special Issue:

• Clinical Research •     Next Articles

Effect of PPM1K gene single nucleotide polymorphisms rs1440581 and rs7678928 on serum branched chain amino acid levels and subsequent cardiovascular disease risk

Ziyu Liu1, Surong Wen1, Xiaoqing Wang1, Xing Qi1, Hairong Hao1, Yanwen Lu1, Jing Li1, Shayan Li1, Weinan Yu1, Hongwen Zhou2, Wen Hu1,()   

  1. 1. Department of Endocrinology and Metabolism, Huai'an Hospital Affiliated to Xuzhou Medical College, Huai'an 223021, China
    2. Department of Endocrinology and Metabolism, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210000, China
  • Received:2020-06-03 Online:2020-12-15 Published:2021-03-23
  • Contact: Wen Hu

Abstract:

Objective

To investigate the effect of PPM1K gene single nucleotide polymorphisms rs1440581 and rs7678928 on serum branched chain amino acid levels and subsequent cardiovascular disease (CVD) risk within 4 years.

Methods

A total of 234 subjects randomly selected from Huai'an Second People's Hospital from August to September 2014 were detected for the genotypes of rs1440581 and rs7678928 of PPM1K gene by second-generation sequencing. All subjects were given health guidance and followed for four years. The associations between the two polymorphisms and the levels of serum branched chain amino acids and other risk factors of cardiovascular disease were analyzed with SPSS 22.0 software.

Results

The distribution frequencies of genotypes of rs1440581 and rs7678928 were consistent with the Hardy-Weinberg equilibrium (P>0.05). The baseline levels of serum valine (P=0.022) and total branched chain amino acids (P=0.026) in subjects with CC genotype of rs1440581 were higher than those with TT genotype. There were no significant differences in the levels of serum branched chain amino acids among genotypes of rs7678928. After four-year follow-up, there were statistical differences in the levels of blood pressure, serum triglyceride, high-density lipoprotein cholesterol and aspartate aminotransferase among each genotype of rs1440581 (P<0.05). The levels of blood pressure and serum high-density lipoprotein cholesterol in each genotype of rs7678928 were statistically different (P<0.05). Under the same intervention measures, there were little improvement in the levels of serum FPG, TG, HDL-C, ALT, AST, and CREA in subjects with rs1440581 CC genotype and rs7678928 TT genotype.

Conclusion

Allele C of rs1440581 of PPM1K gene is associated with elevated serum valine, total branched chain amino acids, and CVD risk. The CC genotype of rs1440581 may be a better marker for the risk of CVD as substitutes for the levels of baseline serum branched amino acids after 4 years.

Key words: PPM1K gene, Single nucleotide polymorphisms, Branched amino acid

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