NCT00437333

Metformin Suspension and Insulin Sensitivity

Insulin Sensitivity After Metformin Suspension in Normal-Weight Women With Polycystic Ovary Syndrome

• Status: Completed
• Phase: Phase 4
• Study type: Interventional
• Enrollment: 30 (planned)
• Sponsor: University Magna Graecia · Academic / Other
• Sex: Female
• Age: 20 Years – 30 Years
• Healthy volunteers: Not accepted

Summary

Metformin is an insulin sensitizing drug routinely used for the treatment of anovulatory patients with polycystic ovary syndrome (PCOS). To date, the metabolic effects of the long-term metformin administration are know but no data are available on the effects after its suspension. The purpose of this study is to evaluate the effects of metformin suspension on insulin sensitivity in PCOS patients.

Detailed description

Thirty young normal-weight anovulatory PCOS women will be enrolled. The diagnosis of PCOS will be based on the presence of clinical \[Ferriman-Gallwey score ≥ 8\] or biochemical hyperandrogenism (serum testosterone levels (\>2 SD above our reference mean values) and chronic anovulation \[serum luteal progesterone (P) below 2 ng/mL)\]. Patients will be randomly allocated into two groups (metformin and placebo group) using a computer-software. Fifteen PCOS patients will be treated with metformin at a dosage of 1700 mg daily (one tablet of 850 mg twice daily; metformin group), whereas other 15 PCOS will be treated with placebo tables (one tablet twice daily; placebo group). The duration of the treatment will be 12 months. Patients will be instructed to follow their usual diet and physical activity, and to use barrier contraception throughout the study. The length and the frequency of the menstrual cycles, and the adverse experiences (AEs) will be reported on a daily diary. Each subject will undergo follow-up visits under (at six and 12 months from treatment starting) and after treatment (at six and 12 months from treatment withdrawal). At each follow-up visit, in all subjects the same operator will perform clinical, hormonal, metabolic, and insulin sensitivity assessments by euglycemic hyperinsulinemic clamp.

Conditions

• Polycystic Ovary Syndrome

Interventions

Type	Name	Description
DRUG	Metformin cloridrate

Timeline

• Start date: 2003-12-01
• Completion: 2006-04-01
• First posted: 2007-02-21
• Last updated: 2007-02-21

Locations

1 site across 1 country: Italy