Clinical trial NCT00989781: Mechanisms of Increased Androgen Production Among Women With Polycystic Ovary Syndrome
Official title: Mechanisms of Increased Androgen Production Among Women With Polycystic Ovary Syndrome
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Polycystic Ovary Syndrome
Keywords: PCOS, Androgens, ovary, polycystic
Lead sponsor: University of California, San Diego
Sponsor class: OTHER
First posted: 2009-10-06
Enrollment: 41
Sex: FEMALE
Minimum age (years): 18
Maximum age (years): 37
Standard ages: ADULT
Accepts healthy volunteers: yes
Allocation: NON_RANDOMIZED
Intervention model: PARALLEL
Primary purpose: SCREENING

Brief summary: Jeffrey Chang MD is conducting a research study to learn more about the increased male hormone levels, otherwise known as androgens, seen in women with polycystic ovary syndrome (PCOS). Women with PCOS have ovaries that are comprised of many cysts, or follicles. They also have irregular or absent menstrual periods and symptoms of increased male hormones, such as facial hair or acne. In each part of the study (except part 4 which is for PCOS women only) we will be comparing responses of PCOS women to normal controls

Detailed description: The first part of this study looks specifically at the structure of the ovaries, which are the female sex glands where both androgens and estrogens (female hormones) are made. It involves imaging your ovaries with a technology called 3-D Ultrasound. We are interested in recording the number, size and arrangement of the follicles in your ovaries.

The second part of the study looks at how the ovary produces male hormones, or androgens, with and without follicle stimulating hormone (FSH) stimulation. Hormones are substances made by a gland in one part of the body which regulate another part. FSH is a hormone naturally produced by the pituitary gland located in the brain and it helps the ovary produce estrogens, or female hormones. LH is a hormone also naturally produced by the pituitary gland and it has the ability to stimulate the ovary to make androgens. We are interested to see how much androgen your ovaries will produce in response to LH with and without FSH. To accomplish this, you will be given FSH as well as hCG, a drug that acts like LH to stimulate the ovary; FSH and hCG are approved by the Food and Drug Administration (FDA) for this investigational, off-label use.

The third part of the study looks at how much the adrenal glands contribute to the increase male hormone levels seen in PCOS. ACTH is a hormone naturally produced by the pituitary gland located in the brain and it stimulates the adrenals to make hormones. The adrenal glands are above the kidneys. They are chiefly responsible for helping the body adjust to stressful situations and work by producing cortisol and adrenaline. The adrenal glands also produce androgens, or male hormones. Previous studies have shown that some women with PCOS produce more male hormones from their adrenals. We are interested to see how much androgen your adrenal glands produce. To accomplish this, you will first be given dexamethasone, a stress steroid, to temporarily suppress your adrenal glands. You will then be given ACTH intravenously over the course of 7 hours to stimulate your adrenal glands.

The fourth part of the study is for PCOS women only and looks at how much the role of insulin contributes to the increase male hormone levels. Insulin is a hormone naturally produced by the pancreas that stimulates all of the cells in your body to take up glucose, or sugar, from the blood. Previous studies have shown that PCOS women who are more resistant to insulin, or whose cells do not take up glucose from the blood in response to insulin, make more male hormones. We are interested to see how much androgen your ovaries produce in response to LH before and after we temporarily decrease the amount of insulin in your blood. To accomplish this, you will again be given hCG, a drug that acts like LH to stimulate the ovary, with and without diazoxide, a drug that decreases the amount of insulin in your bloodstream. These tests will all be done after you are on a diet that limits how much sugar you eat. To test how much insulin you make, you will also be given Oral Glucose Tolerance Tests before and after diazoxide. This test is done by drinking a sugary liquid and testing your blood over 3 hours.

Eligibility criteria: Inclusion Criteria:

A group of 40 women with PCOS and 20 normal women ages 18-37 will be studied.

* Subjects will be determined to have PCOS based on clinical history of irregular menses and clinical or laboratory evidence of hyperandrogenism and polycystic ovaries on ultrasound.
* Subjects should not have been on any hormonal therapy or metformin for at least 2 months prior to study start.
* Subjects will be determined to be normal controls if they have a clinical history of regular periods

Exclusion Criteria:

* Women with hemoglobin less than 11 gm/dl at screening evaluation
* Women with untreated thyroid abnormalities
* Pregnant women or women who are nursing
* Women with BMI \> 37
* Women with known sensitivity to the agents being used
* Women with prosthetic devices (i.e.,ear)/ shunts (ventricular), Hearing aids, Metal plate/pins/screws/wires
* Women with diabetes, or renal, liver, or heart disease.

Primary outcomes:
measure: 17-hydroxyprogesterone Responses to hCG in PCOS Women and Normal Controls
timeFrame: Baseline and 24 hours after hCG
Secondary outcomes:
measure: Adrenal 17-hydroxyprogesterone Response to ACTH in PCOS Women and Normal Controls
timeFrame: Baseline and 1, 2, 3, 4, 5, and 6 hours after ACTH
measure: 17 Hydroxyprogesterone Response to hCG Injection After Lowered Insulin Levels.
timeFrame: Baseline and 24 after hCG
measure: Anti-Mullerian Hormone (AMH)
timeFrame: Baseline
Other outcomes:
measure: Follicle Count on 3-D Ultrasound in PCOS Women and Normal Controls
timeFrame: baseline
Locations:
city: San Diego
country: United States
facility: UCSD Medical Center
state: California
Study officials:
affiliation: Professor
name: R. Jeffrey Chang, M.D.
role: PRINCIPAL_INVESTIGATOR
References: