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A randomised, double-blind, placebo-controlled crossover trial of the effects of metformin therapy on vascular and metabolic risk in young women with polycystic ovary syndrome. - Effects of metformin on vascular function in Polycystic Ovary Syndrome

A randomised, double-blind, placebo-controlled crossover trial of the effects of metformin therapy on vascular and metabolic risk in young women with polycystic ovary syndrome. - Effects of metformin on vascular function in Polycystic Ovary Syndrome

Status
Active, not recruiting
Phases
Phase 4
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2005-005470-69-GB
Enrollment
36
Registered
2006-07-27
Start date
2007-08-16
Completion date
Unknown
Last updated
2019-06-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Polycystic Ovary Syndrome

Interventions

Trade Name: Metformin Hydrochloride (Glucophage) Product Name: Metformin Product Code: not applicable Pharmaceutical Form: Tablet

Sponsors

Cardiff University
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. A diagnosis of polycystic ovary syndrome. This will be based on evidence of androgen excess (clinical symptoms of hyperandrogenism and/or elevated testosterone) with ovulatory dysfunction (fewer than 6 menstrual cycles per year), supported by ovarian ultrasound where available. Congenital adrenal hyperplasia, Cushing’s syndrome, androgen-secreting neoplasms, hyperprolactinaemia and thyroid disease will be excluded by biochemical testing. 2. Patients will be aged between 18 and 30 years. Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range F.1.3 Elderly (>=65 years) no F.1.3.1 Number of subjects for this age range

Exclusion criteria

Exclusion criteria: 1. Pregnancy or the intention to become pregnant during the course of this trial. 2. Breastfeeding. 3. A history of current or previous use (within 6 months) of oral contraceptives, antidiabetics or antiandrogens. 4. Medical history of diabetes or hypertension. 5. Contraindications to metformin therapy including renal or hepatic impairment.

Design outcomes

Primary

MeasureTime frame
Main Objective: To determine whether metformin therapy improves endothelial function and arterial compliance in young women with polycystic ovary syndrome and to establish whether the degree of insulin resistance following metformin treatment is the major determinant of improvement in endothelial response in young women with polycystic ovary syndrome.;Secondary Objective: To determine whether treatment with metformin reduces metabolic risk by measuring its effect on insulin sensitivity, lipid profiles and markers of inflammation in young women with polycystic ovary syndrome.;Primary end point(s): The primary end-points of this study will be changes in endothelial function and arterial stiffness i.e. changes in pulse wave velocity and augmentation index (as measured by pulse wave analysis post-salbutamol versus post-GTN) from baseline. Secondary end-points will include changes in testosterone, PAI-1, ET-1, hsCRP, measures of insulin resistance and lipid profile.

Countries

United Kingdom

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026