Evaluation of Adrenal Androgens in Normal and Obese Girls After Suppression and Stimulation (JCM022)
试验速览
- 阶段
- 不适用
- 状态
- 进行中（未招募）
- 入组人数
- 84
- 试验地点
- 1
- 主要终点
- Change in progesterone concentrations from the 2100-2300 time block to the 0500-0700 time block in normal weight girls compared to overweight girls.
研究概览
简要总结
Women with polycystic ovary syndrome (PCOS) often have irregular menstrual periods, too much facial and body hair, and weight gain. Women with PCOS also have a hard time becoming pregnant. Girls with high levels of the male hormone testosterone often develop PCOS as adults. Some girls with high levels of male hormone will develop normal hormone levels as they grow up, but most girls continue to have high levels of male hormone as adults. The purpose of this study is to understand where the male and female hormones come from in girls as they get older. The investigators think the adrenal gland, makes most of the hormones in young girls and that the ovary and the adrenal gland make these hormones in older girls. The investigators would like to find out whether an overactive adrenal gland makes these hormones higher in girls who are overweight, compared to those who are not overweight.
详细描述
We propose that the adrenal gland is the predominant source of the early morning rise in progesterone and testosterone which is more marked in early puberty. Specifically, we hypothesize that dexamethasone administration at 22:00 will be associated with a dampened progesterone and testosterone rise the subsequent morning in normal girls. We also propose that the adrenal gland is the source of the excess androgen production in young obese girls, and that dexamethasone will decrease their early morning testosterone and progesterone levels. We will explore the hypothesis that functional adrenal hyperandrogenism, or ACTH hyperresponsiveness, is one mechanism underlying this excess adrenal androgen production seen in obesity.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Basic Science
- 盲法
- None
入排标准
- 年龄范围
- 7 Years 至 18 Years（Child, Adult）
- 性别
- Female
- 接受健康志愿者
- 是
入选标准
- •Normal and obese (>95th BMI%) females
- •Weight of 24 kg or more
- •Early to late puberty (expected age range 7-18)
- •Screening labs within age-appropriate normal range, with the exception of a mildly low hematocrit (see below) and the hormonal abnormalities inherent in obesity which could include mildly elevated LH, lipids, testosterone, prolactin, DHEAS, E2, glucose, and insulin; and decreased follicle-stimulating hormone (FSH) and/or sex hormone-binding globulin (SHBG)
排除标准
- •Screening labs outside of age-appropriate normal range
- •Hemoglobin <12 mg/dL and hematocrit<36% (Subjects will be offered the opportunity to take iron supplementation for 60 days if their hematocrit is slightly low (33-36%) (suggestive of iron deficiency anemia) and will then return for retesting of their hemoglobin/hematocrit. If still <36%, they will be excluded.)
- •Morning Cortisol <5 g/dL
- •17-hydroxyprogesterone >295 ng/dL
- •Weight<24 kg
- •History of Cushing's syndrome or adrenal insufficiency
- •Pregnant (self reported)
研究组 & 干预措施
Dexamethasone, Cortrosyn
Dexamethasone given 1 mg PO Cortrosyn given single IV bolus 0f 0.25 mg
干预措施: Dexamethasone (Drug)
Dexamethasone, Cortrosyn
Dexamethasone given 1 mg PO Cortrosyn given single IV bolus 0f 0.25 mg
干预措施: Cortrosyn (Drug)
结局指标
主要结局
Change in progesterone concentrations from the 2100-2300 time block to the 0500-0700 time block in normal weight girls compared to overweight girls.
时间窗: Time frame for the study will be 14 hours (Sampling begins at 1900 hrs and proceeds through 0800 hours the following morning).
A primary endpoint for analysis in this study is the change in progesterone concentrations from the 2100-2300 time block to the 0500-0700 time block in normal weight girls compared to overweight girls.
次要结局
- Overnight changes in male and female hormones in response to ACTH suppression(14 hours (Sampling begins at 1900 hours and proceeds through 0800 the following morning))
- Response to ACTH stimulation in normal weight and overweight girls(14 hours (1900 - 0800 hrs))
研究者
Christine Burt Solorzano
Assistant Professor of Pediatrics
University of Virginia