Association of SOD2 A16V and PON2 S311C polymorphisms with polycystic ovary syndrome in Chinese women

  • Q. Liu
  • H. Liu
  • H. Bai
  • W. Huang
  • R. Zhang
  • J. Tan
  • L. Guan
  • P. Fan
Original Article



To investigate the relationship between superoxide dismutase 2 (SOD2) A16V and paraoxonase 2 (PON2) S311C gene variants and the risk of polycystic ovary syndrome (PCOS) and evaluate the effects of the genotypes on clinical, hormonal, metabolic and oxidative stress indexes in Chinese women.


This is a cross-sectional study of 932 patients with PCOS and 745 control women. For the clinical and metabolic association study of genotypes, 631 patients and 492 controls were included after excluding the subjects with interferential factors. Genotypes were determined by polymerase chain reaction (PCR) and restriction fragment length polymorphism analysis. Serum total oxidant status, total antioxidant capacity (T-AOC), oxidative stress index and malondialdehyde (MDA) levels, and clinical and metabolic parameters were also analyzed.


The prevalence of the A allele of SOD2 A16V polymorphism was significantly greater in patients with PCOS than in control subjects. Genotype (AA + AV) remained a significant predictor for PCOS in prognostic models including age, body mass index, insulin resistance index, high-density lipoprotein (HDL), low-density lipoprotein (LDL), and triglycerides (TGs) as covariates. Patients carrying the A allele had significantly higher serum luteinizing hormone (LH) levels, and the ratio of LH to follicle-stimulating hormone compared with patients with the VV genotype. We also showed that patients carrying the C allele of the PON2 S311C polymorphism had lower T-AOC compared with patients carrying the SS genotype. However, no significant differences were observed in the frequencies of the S311C genotypes and alleles of the PON2 gene between PCOS and control groups.


The SOD2 A16V, but not PON2 S311C, polymorphism may be one of the genetic determinants for PCOS in Chinese women.


Superoxide dismutase 2 Paraoxonase 2 Gene polymorphism Oxidative stress Polycystic ovary syndrome 



We thank women with or without PCOS who donated blood samples for this study. We are thankful to You Li, De Hua Wan, Qi Song, Feng Zhang, Ying Wang, Jinxia Zhang, and Yujin Zhang for work performed to support this study.


This work was funded by the Chinese National Natural Science Foundation (81370681) and the Program for Changjiang Scholars and Innovative Research Team in University, Ministry of Education (IRT0935).

Compliance with ethical standards

Conflict of interest

On behalf of all authors, the corresponding author states that there is no conflict of interest.

Ethical approval

All procedures performed in this study involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki Declaration and its later amendments.

Informed consent

Informed consent was obtained from all individual participants included in the study.

Data availability

The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.


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© Italian Society of Endocrinology (SIE) 2019

Authors and Affiliations

  1. 1.Laboratory of Genetic Disease and Perinatal Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second University HospitalSichuan UniversityChengduPeople’s Republic of China
  2. 2.Department of Obstetrics and Gynecology, West China Second University HospitalSichuan UniversityChengduPeople’s Republic of China
  3. 3.Laboratory of Genetic Disease and Perinatal Medicine, West China Second University HospitalSichuanUniversityChengduPeople’s Republic of China

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