Journal of Bioengineering & Biomedical Science

Characterization of Inhibin Alpha Gene in Patients of Polycystic Ovary Syndrome

Abstract

Farkhanda Haroon, Ayesha Maqbool, Rabia Rafiq, Fatima Azhar and Muhammad Nazer Ul Islam Haroon

Polycystic ovary syndrome (PCOS) is multi-symptomatic gynecological disorder with high prevalence (5-10%) among human females. Primarily it affects female reproductive system resulting in infrequent menstrual cycles. Visceral adiposity, insulin resistance, hirsutism and infertility are other consequences of PCOS. Genetic as well as environmental factors contribute for the progression of PCOS. Multiple studies revealed association of PCOS with mutations in different genes specifically expressing androgens and androgen receptors. PCOS is an autosomal and X-linked disease. Inhibin A downregulates the follicle stimulating hormone (FSH) to promote ovulation and normal menstrual cycle. Inhibin A is a hetero dimer of INHA and inhibin INHB subunits. INHA along with Anti-mullerian hormone can be used as a diagnostic marker for PCOS. This study has been conducted using data of fifty participants. They were classified into two groups, control and experimental group. Out of total 50 participants, 30 were PCOS patients and 20 were healthy control subjects. Blood samples of PCOS patients were collected from Pakistan Institute of Medical Sciences. Extracted DNA from blood was used for amplification of exon 2 of INHA subunit of Inhibin A and B gene. Restriction digestion of Amplified gene segment was carried out with restriction endonuclease. Restriction fragment length polymorphism (RFLP) results showed 30% (p 0.0178) of PCOS patients having heterozygous mutation (G769A/ rs12720062). Results revealed positive risk of developing PCOS when having A allele at position 769bp in heterozygous state. So, we concluded that there is an association between heterozygosity at rs12720062 and risk of development of PCOS.