Coronary Heart Disease Clinical Trial
Official title:
Identification of the Menstrual Cycle-Associated Factors That Modulate Circulating Lipid Levels in Premenopausal Women
Women who have regular menstrual cycles have a lower risk of heart disease than men of the same age or women who no longer have menstrual cycles. The purpose of this study is to help determine why the menstrual cycle causes a lower risk of heart disease. The investigators believe that the hormones (estradiol and progesterone) produced during the menstrual cycle, as well as the normal processes occurring in the follicle and corpus luteum (transformed follicle), change levels of "good" and "bad" cholesterol in the blood-stream. These levels of good and bad cholesterol are an important risk factor for heart disease. Therefore, our goal is to determine what effects each of these factors (estradiol, progesterone, follicle, corpus luteum) have on the levels of good and bad cholesterol in the woman's bloodstream. As many women take birth control pills, which contain synthetic forms of estradiol and progesterone that block ovulation and development of a corpus luteum, the investigators also want to determine what effect one common type of birth control pill has on levels of good and bad cholesterol.
Status | Completed |
Enrollment | 5 |
Est. completion date | January 2013 |
Est. primary completion date | June 2012 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | Female |
Age group | 21 Years to 40 Years |
Eligibility |
Inclusion Criteria: - Normal menstrual cycles of 25-35 days in length for at least previous 3 cycles - 21-40 years of age - BMI > 18, < 30 - Serum P4 > 9 ng/ml on single sample collected between days 18-25 of self-reported menstrual cycle - Flexible schedule allowing morning blood draws on less than 48 hour notice - In good general health - Commit to remain on stable diet during study period (no changes to normal dietary habits) - Commit to using non-hormonal contraceptive methods during study period except those prescribed in the experimental protocol - No objections to taking study drugs Exclusion Criteria: - Oral contraceptive use or other hormone supplement within the preceding 2 months - Long-acting hormonal contraceptive use in the past 12 months (e.g., Depo-Provera®) - Contraindications to study drugs - Current or past pregnancy within the previous 6 months or currently trying to conceive - Desiring to conceive in the next 8 months - Breastfeeding in the past 2 months - Diagnosed Diabetes or Metabolic Syndrome - Current or previous use of cholesterol lowering drugs within the preceding 12 months - Diagnosed Polycystic Ovary Syndrome - History of, or self-reported, substance abuse - Smoker - Previous infertility treatment excluding male factor issues - Use of an investigational drug within the past 2 months |
Allocation: Non-Randomized, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Basic Science
Country | Name | City | State |
---|---|---|---|
United States | Oregon Health & Sciences University, Department of Obstetrics and Gynecology, Women's Health Research Unit | Portland | Oregon |
Lead Sponsor | Collaborator |
---|---|
Oregon Health and Science University | Medical Research Foundation, Oregon |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Total to HDL Cholesterol Ratio | Entire Study | No |
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