Effect of Decreasing Iron Tissue Depots on the Cardiovascular Risk of Women With Polycystic Ovary Syndrome
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 37
- 试验地点
- 1
- 主要终点
- Change in the Matsuda index from the circulating glucose and insulin concentrations during and standard oral glucose tolerance test.
研究概览
简要总结
AIMS To study the effects of the decrease in iron tissue depots after scheduled bloodletting on insulin sensitivity, carbohydrate metabolism, classic and non-classic cardiovascular risk factors in patients with functional hyperandrogenism (polycystic ovary syndrome & idiopathic hyperandrogenism) on standard treatment with combined oral contraceptives (COC) according to usual clinical practice.
METHODOLOGY
Open label, controlled, parallel, prospective study of 12 months of duration, with 2 randomized arms of follow-up:
i) Intervention Group: Patients with functional hyperandrogenism on standard COC treatment randomly allocated to perform scheduled phlebotomies from the third month of treatment to the end of the study (3 times with a 3-month interval between them).
ii) Control Group: Patients with functional hyperandrogenism on standard COC treatment randomly allocated to follow-up without bloodletting.
The whole group of patients will undergo a comprehensive anthropometric and hormonal assessment, evaluation of classic cardiovascular risk factors (insulin sensitivity and carbohydrate metabolism after a standard oral glucose test- 75 g), lipid profile, ambulatory and office blood pressure monitoring, proinflammatory profile, oxidative stress status, autonomic function assessment, and iron-related metabolism parameters at baseline, after 3-month COC treatment and after reduction of iron tissue depots plus OC in the Intervention Group of patients, and throughout follow-up under treatment with COC in the Control Group of patients. If a significant relationship between circulating hepcidin levels and elevated ferritin concentrations is observed, a study of the potential influence of mutations/polymorphic variants of hepcidin gene on ferritin values will be performed as well.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 45 Years（Adult）
- 性别
- Female
- 接受健康志愿者
- 否
入选标准
- •Premenopausal women with functional hyperandrogenism defined as:
- •Polycystic ovary syndrome (PCOS): Clinical and biochemical hyperandrogenism plus ovulatory dysfunction or polycystic ovarian morphology.
- •Idiopathic hyperandrogenism: Clinical and biochemical hyperandrogenism with normal ovulatory cycles and normal ovarian morphology.
- •Combined oral contraceptive pill indication for treatment: i) hyperandrogenism-related dermo-cosmetic complaints with psychoemotional impact; ii) endometrial protection; and/or iii) contraception desire.
- •Scheduled phlebotomy acceptation if randomly allocated.
- •Signed informed consent.
排除标准
- •Contraindication for blood donation.
- •Plasma ferritin < 76 pmol/l and/or transferrin saturation percent < 15%.
- •Anemia (plasma hemoglobin < 12 g/dl or hematocrit < 36%).
- •Chronic kidney disease (eGFR < 60 ml/min per 1.73 m2).
- •Personal history of dyslipidemia, hypertension, prediabetes, diabetes mellitus, gestational diabetes or cardiovascular events.
- •Treatment with oral contraceptives, antiandrogens, insulin sensitizers, drugs that might interfere with blood pressure regulation, lipid profile or carbohydrate metabolism, and oral/parenteral iron therapy for the previous 3 months to inclusion.
- •Previous surgical treatment for PCOS.
- •History of blood donation for the previous 12 months to inclusion.
- •Current history of infectious disease, inflammatory disease, liver disease, neurologic disease or malignancy.
- •Eating disorders. Body mass index < 18.5 Kg/m
- •Hereditary hemochromatosis.
- •Celiac disease or malabsorptive disorder.
- •Contraindication for treatment with combined oral contraceptives.
- •Current smoking, recreational drug use or excessive alcohol consumption (> 40 g per day).
研究组 & 干预措施
Intervention
Premenopausal women with functional hyperandrogenism under combined oral contraceptive pill qd as usual clinical practice who will undergo a scheduled standard phlebotomy every 3 months from month 3 to 12 of follow-up.
干预措施: Phlebotomy (Procedure)
Intervention
Premenopausal women with functional hyperandrogenism under combined oral contraceptive pill qd as usual clinical practice who will undergo a scheduled standard phlebotomy every 3 months from month 3 to 12 of follow-up.
干预措施: ethinylestradiol (Drug)
Intervention
Premenopausal women with functional hyperandrogenism under combined oral contraceptive pill qd as usual clinical practice who will undergo a scheduled standard phlebotomy every 3 months from month 3 to 12 of follow-up.
干预措施: Cyproterone Acetate (Drug)
Control
Premenopausal women with functional hyperandrogenism under standard combined oral contraceptive pill qd as usual clinical practice.
干预措施: ethinylestradiol (Drug)
Control
Premenopausal women with functional hyperandrogenism under standard combined oral contraceptive pill qd as usual clinical practice.
干预措施: Cyproterone Acetate (Drug)
结局指标
主要结局
Change in the Matsuda index from the circulating glucose and insulin concentrations during and standard oral glucose tolerance test.
时间窗: one year
Percentage of patients with Hb < 12 g/dl or hematocrit <36% throughout the study
时间窗: one year
次要结局
- Change in the Disposition index between month 0 and 12 of follow-up(one year)
- Percentage of patients with a hypovolemic event during blood donation(one year)
- Change in the percentage of patients with undiagnosed prediabetes/diabetes between month 0 and 12 of follow-up(one year)
- Change in the lipid profile between month 0 and 12 of follow-up(one year)
- Changes in the blood pressure recordings between month 0 and 12 of follow-up(one year)
- Percentage of patients with ferropenia throughout the study(one year)
研究者
Manuel Luque Ramírez
Member of the Diabetes, Obesity and Human Reproduction Research Group, Centro de Investigación Biomédica en Red Diabetes y Enfermedades Metabólicas Asociadas CIBERDEM.
Fundacion para la Investigacion Biomedica del Hospital Universitario Ramon y Cajal