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Article

Association between serum levels and pentanucleotide polymorphism in the sex hormone binding globulin gene and cardiovascular risk factors in females with polycystic ovary syndrome

  • Authors:
    • Dinka Pavicic Baldani
    • Lana Skrgatic
    • Jasmina Ziva Cerne
    • Sasa Kralik Oguic
    • Blaz Matija Gersak
    • Ksenija Gersak
  • View Affiliations / Copyright

    Affiliations: Department of Obstetrics and Gynecology, University of Zagreb Medical School, Division of Human Reproduction, University Medical Centre Zagreb, 10000 Zagreb, Croatia, Department of Obstetrics and Gynecology, University Medical Centre Ljubljana, Ljubljana SI‑1000, Slovenia, Clinical Institute of Laboratory Diagnostics, University Medical Centre Zagreb, 10000 Zagreb, Croatia, Faculty of Medicine, University of Ljubljana, Ljubljana SI‑1104, Slovenia
  • Pages: 3941-3947
    |
    Published online on: December 19, 2014
       https://doi.org/10.3892/mmr.2014.3117
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Abstract

The objective of the present study was to evaluate the influence of TAAAA repeat allele length on the levels of serum sex hormone binding globulin (SHBG) and cardiovascular risk factors in patients with polycystic ovary syndrome (PCOS). The study included 91 females with PCOS and 99 healthy controls. Phenotypic hyperandrogenism, body mass index and waist‑to‑hip ratio (WHR) were recorded. Hormonal profiles, fasting insulin and glucose levels, lipid profiles and C‑reactive protein (CRP) levels were measured. Genotyping of TAAAA repeat polymorphisms in the SHBG gene was performed. No significant difference was found in the frequency and distribution of TAAAA repeat alleles between PCOS patients and controls (P=0.739). In PCOS patients, SHBG levels were inversely correlated with serum C‑reactive protein (CRP) levels (R=−0.489, P<0.001). PCOS patients with long TAAAA repeat alleles had significantly lower serum SHBG and free testosterone levels, yet higher CRP levels than patients with short allele repeats. A multiple linear regression model using the number of TAAAA repeats, waist‑to‑hip ratio, a homeostatic model assessment of insulin resistance and age as independent predictors explained 44.8% of the variability in serum SHBG levels. In this model, TAAAA repeat polymorphism was found to be the only reliable predictor of serum SHBG levels (P<0.001). In conclusion, the TAAAA repeat polymorphism was shown to not be a major determinant of the PCOS status, although it influenced serum SHBG levels in females with PCOS. A strong independent association existed between serum SHBG and CRP levels. CRP is an established risk factor of cardiovascular disease and a marker of low‑grade inflammation, typical of atherogenesis. This may be one of the pathways by which low SHBG levels affect cardiovascular risk.
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Copy and paste a formatted citation
Spandidos Publications style
Baldani DP, Skrgatic L, Cerne JZ, Oguic SK, Gersak BM and Gersak K: Association between serum levels and pentanucleotide polymorphism in the sex hormone binding globulin gene and cardiovascular risk factors in females with polycystic ovary syndrome. Mol Med Rep 11: 3941-3947, 2015.
APA
Baldani, D.P., Skrgatic, L., Cerne, J.Z., Oguic, S.K., Gersak, B.M., & Gersak, K. (2015). Association between serum levels and pentanucleotide polymorphism in the sex hormone binding globulin gene and cardiovascular risk factors in females with polycystic ovary syndrome. Molecular Medicine Reports, 11, 3941-3947. https://doi.org/10.3892/mmr.2014.3117
MLA
Baldani, D. P., Skrgatic, L., Cerne, J. Z., Oguic, S. K., Gersak, B. M., Gersak, K."Association between serum levels and pentanucleotide polymorphism in the sex hormone binding globulin gene and cardiovascular risk factors in females with polycystic ovary syndrome". Molecular Medicine Reports 11.5 (2015): 3941-3947.
Chicago
Baldani, D. P., Skrgatic, L., Cerne, J. Z., Oguic, S. K., Gersak, B. M., Gersak, K."Association between serum levels and pentanucleotide polymorphism in the sex hormone binding globulin gene and cardiovascular risk factors in females with polycystic ovary syndrome". Molecular Medicine Reports 11, no. 5 (2015): 3941-3947. https://doi.org/10.3892/mmr.2014.3117
Copy and paste a formatted citation
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Spandidos Publications style
Baldani DP, Skrgatic L, Cerne JZ, Oguic SK, Gersak BM and Gersak K: Association between serum levels and pentanucleotide polymorphism in the sex hormone binding globulin gene and cardiovascular risk factors in females with polycystic ovary syndrome. Mol Med Rep 11: 3941-3947, 2015.
APA
Baldani, D.P., Skrgatic, L., Cerne, J.Z., Oguic, S.K., Gersak, B.M., & Gersak, K. (2015). Association between serum levels and pentanucleotide polymorphism in the sex hormone binding globulin gene and cardiovascular risk factors in females with polycystic ovary syndrome. Molecular Medicine Reports, 11, 3941-3947. https://doi.org/10.3892/mmr.2014.3117
MLA
Baldani, D. P., Skrgatic, L., Cerne, J. Z., Oguic, S. K., Gersak, B. M., Gersak, K."Association between serum levels and pentanucleotide polymorphism in the sex hormone binding globulin gene and cardiovascular risk factors in females with polycystic ovary syndrome". Molecular Medicine Reports 11.5 (2015): 3941-3947.
Chicago
Baldani, D. P., Skrgatic, L., Cerne, J. Z., Oguic, S. K., Gersak, B. M., Gersak, K."Association between serum levels and pentanucleotide polymorphism in the sex hormone binding globulin gene and cardiovascular risk factors in females with polycystic ovary syndrome". Molecular Medicine Reports 11, no. 5 (2015): 3941-3947. https://doi.org/10.3892/mmr.2014.3117
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