27Mar 2019

SERUM C-PEPTIDE CONCENTRATIONS IN WOMEN WITH POLYCYSTIC OVARIAN SYNDROME (PCOS).

  • Assistant Professor, Department Of Biochemistry, Gitam Institute Of Medical Sciences And Research (Gimsr), Visakhaptnam.
  • Third Year Mbbs, Gimsr, Visakhaptnam.
  • Professor AndHod Biochemistry, Gimsr, Visakhaptnam.
  • professor, department of radiology, Gimsr, Visakhaptnam.
  • Gimsr, Visakhaptnam.
  • Abstract
  • Keywords
  • References
  • Cite This Article as
  • Corresponding Author

Background:Polycystic ovarian syndrome (PCOS) is a heterogenous endocrine disorder affecting majority of women in reproductive age. The major endocrine disruption being excessive androgen production and abnormal insulin activity. Excess body weight in women with PCOS accelerates progression towards diabetes by exacerbating both insulin resistance and inappropriate insulin response. As Insulin levels are related to C-peptide levels and as insulin resistance is key finding in PCOS women, increased serum insulin and serum C-Peptide concentrations are considered to be a major finding in PCOS. Methods:Its a case control study was carried out in Gitam institute of medical sciences and research hospital during june 2018 to august 2018 which includes 60 females aged between 17-29 years. Out of 60 female participants, 30 females were cases with PCOS and the remaining 30 were age matched apparently healthy females. Diagnosis of PCOS is based on 2 of 3 findings ? oligo/anovulation, hyperandrogenism, polycystic ovaries in ultrasound (Rotterdam criteria). Results:Serum C-peptide concentrations measured in cases and controls were analysed by SPSS statistical software 23.0. The means of C-peptide between case and control group were compared by unpaired student t-test. P value less than 0.05 were considered statistically significant. The mean ? SD of C-peptide in case group (women with PCOS) was 3.24?0.51 ng/ml which was significantly higher (P < 0.05) than mean of control group (women without PCOS). Conclusion:This study showed significantly higher serum C-peptide concentrations in women with PCOS confirming the presence of insulin resistance in PCOS women.


  1. De Leo, M. C. Musacchio, V. Cappelli et al., Genetic, hormonal and metabolic aspects of PCOS: an update Reproductive Biology and Endocrinology (2016) 14:38 DOI 10.1186/s12958-016-0173.
  2. Susan M Sirmans, Kristen A Pate et al., Epidemiology, diagnosis, and management of polycystic ovary syndrome Clinical Epidemiology 2014:6 1?13.
  3. Berger MJ, Taymor ML, Patton WC et al., Gonadotropin levels and secretory patterns in patients with typical and atypical polycystic ovarian desease. FertilSteril, 1975; 26: 619-27.
  4. St?phanie B Mayer, William S Evans & John E Nestler., Polycystic ovary syndrome and insulin: our understanding in the past, present and future.,Womens Health (2015) 11(2), 137?149.
  5. EvanthiaDiamanti-Kandarakis and Andrea Dunaif ., Insulin Resistance and the Polycystic Ovary Syndrome Revisited: An Update on Mechanisms and Implications 2012 Oct 12., 10.1210/er.2011-1034.
  6. Maciejewska-Jeske M, Szczesna A, Męczekalski B et al., Serum C-peptide concentration in overweight and obese women with polycystic ovary syndrome Pol MerkurLekarski. 2010 Aug; 29(170):93-9.
  7. Franks S, McCarthy M, Hardy K et al., Development of polycystic ovary syndrome: involvement of genetic and environmental factors. Int J Androl. 2006;29:278?85.
  8. De Leo V, La Marca A. Petraglia F et al., Insulin-lowering agents in the management of polycystic ovary syndrome. Endocr Rev. 2003;24:633?67.
  9. Steiner D.F, Cunningham D,SpigelmanL,et al., Insulin Biosynthesis: Evidence for a Precursor.?Science.?157?(3789): 697?700.
  10. Clark PM et al., Assays for insulin, proinsulin and C-peptide. Ann ClinBiochem 1999; 36: 541?564.
  11. Polonsky KS, Licinio-Paixao J., et al. Use of biosynthetic human C-peptide in the measurement of insulin secretion rates in normal volunteers and type I diabetic patients. J Clin Invest 1986; 77: 98?105.
  12. Maliqueo1, I.Atwater2., Proinsulin serum concentrations in women with polycystic ovary syndrome: a marker of b-cell dysfunction, Human Reproduction Vol.18, No.12 pp. 2683?2688, 2003
  13. Stassek, J. Erdmann et al., C-Peptide, Baseline and Postprandial Insulin Resistance after a Carbohydrate-Rich Test Meal ? Evidence for an Increased Insulin Clearance in PCOS Patients, GeburtshilfeFrauenheilkd. 2017 Jan; 77(1): 59?65.
  14. MahabeerS ,Jialal et al., Insulin and C-peptide secretion in non-obese patients with polycystic ovarian disease. HormMetab Res. 1989 Sep;21(9):502-6.
  15. MelaniaManco et al., Insulin Dynamics in Young Women with Polycystic Ovary Syndrome and Normal Glucose Tolerance across Categories of Body Mass Index., PLoS One. 2014; 9(4): e92995.
  16. Lobo RA, Carmina E. The importance of diagnosing the polycystic ovary syndrome. Ann Intern Med 2000;132: 989-93.
  17. Dunaif A, Xia J, Book CB, Schenker E et al., Excessive insulin receptor serine phosphorylation in cultured fibroblasts and in skeletal muscle. A potential mechanism for insulin resistance in the polycystic ovary syndrome. J Clin Invest 1995;96:801-10.
  18. Dunaif A et al., Insulin resistance and the polycystic ovary syndrome: mechanism and implications for pathogenesis. Endocrine Rev 1997;18:774-800.
  19. Zhang LH, Rodriguez H, Ohno S et al., Serine phosphorylation of human P450c17 increases 17,20-lyase activity: implications for adrenarche and the polycystic ovary syndrome. ProcNatlAcadSci USA 1995;92: 10619-23.
  20. Kahn CR, Flier JS, Bar RS et al. The syndromes of insulin resistance and acanthosisnigricans. Insulin-receptor disorders in man. Engl. J. Med. 294(14), 739?745 (1976).
  21. Taylor SI, Dons RF, Hernandez E et al., Insulin resistance associated with androgen excess in women with autoantibodies to the insulin receptor. Intern. Med. 97(6), 851?855 (1982).
  22. Diamanti-Kandarakis E, Argyrakopolou G, Economou F, et al. Defects in insulin signaling pathways in ovarian steroidogenesis and other tissues in polycystic ovary syndrome. J Steroid Biocheman Molecular Bio. 2008;109:242?6.

[B.Divya Dharshini, Pasupuleti Pallavi, D.S.S. Girijavani, B.K.Durgaprasad and Manasa. (2019); SERUM C-PEPTIDE CONCENTRATIONS IN WOMEN WITH POLYCYSTIC OVARIAN SYNDROME (PCOS). Int. J. of Adv. Res. 7 (Mar). 1380-1386] (ISSN 2320-5407). www.journalijar.com


DR.B.DIVYA DHARSHINI
Assistant professor, Biochemistry, Gitam institute of medical sciences, GIMSR, Visakhapatnam

DOI:


Article DOI: 10.21474/IJAR01/8770      
DOI URL: https://dx.doi.org/10.21474/IJAR01/8770