- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00611104
Studying the Effect of Freeze-Dried Table Grape Powder on Blood Estrogen Levels in Postmenopausal Women
Evaluation of the Aromatase Inhibition Potential of Standardized Grape Extract
RATIONALE: Estrogen can cause the growth of breast cancer cells. Studying samples of blood and urine in the laboratory from participants receiving freeze-dried table grape powder may help doctors understand the effect of this drug on blood estrogen levels.
PURPOSE: This clinical trial is studying the effect of freeze-dried table grape powder on blood estrogen levels in postmenopausal women.
Study Overview
Status
Conditions
Detailed Description
OBJECTIVES:
- To measure the change in levels of plasma estrone (E1), estradiol, E1-conjugates, and E1-sulfates in postmenopausal women after 6 weeks of daily ingestion of 94 grams of freeze-dried table grape powder.
- To conduct bioavailability research on the freeze-dried table grape powder in humans through the analysis of participants' blood and urine samples.
OUTLINE: Participants receive oral freeze-dried table grape powder once daily on days 1-42 in addition to their usual diet. Treatment continues in the absence of toxicity.
Participants undergo blood sample collection at baseline, periodically after the first dose, and on the last day of the study for pharmacokinetic and bioavailability analysis. Samples are examined by mass spectrometry to measure plasma levels of estrone (E1), estradiol, E1-conjugates, E1-sulfates, testosterone, and androstenedione. Participants also undergo spot urine collection and weight and height measurement periodically during study.
Participants complete food diaries on days 1-3, 21-23, and 40-42 to assess their intake of grapes, grape juice, and red wine and to examine the constancy of their caloric intake over the course of the study.
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
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Minnesota
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Rochester, Minnesota, United States, 55905
- Mayo Clinic
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
PATIENT CHARACTERISTICS:
- ECOG performance status 0-1
- Female
- Postmenopausal (defined as women who have had both ovaries removed or no menstrual period for at least 12 consecutive months)
- Able to give informed consent and complete food records alone or with assistance
Description
DISEASE CHARACTERISTICS:
Participant in the Mayo Mammography Health Study
- Has consented to provide baseline mammogram for digitization
PATIENT CHARACTERISTICS:
- ECOG performance status 0-1
- Female
- Postmenopausal (defined as women who have had both ovaries removed or no menstrual period for at least 12 consecutive months)
- Able to give informed consent and complete food records alone or with assistance
- Willing to provide research blood and urine samples
- Must be a non-smoker
- Willing to maintain current weight
- No history of breast ductal carcinoma in situ or any other cancer, except basal cell or squamous cell skin cancer or lobular carcinoma in situ
- No history of allergic or other adverse reaction to grapes
- No history of diabetes or glucose intolerance
PRIOR CONCURRENT THERAPY:
- No concurrent hormone therapy, including estradiol, estrone, or progestins
Study Plan
How is the study designed?
Design Details
- Observational Models: Case-Control
- Time Perspectives: Prospective
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
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Serum levels of plasma estrone (E1), estradiol, E1-conjugates, and E1-sulfates
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Bioavailability of the freeze-dried table grape powder in humans
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Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Janet E. Olson, PhD, Mayo Clinic
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- CDR0000581219
- P30CA015083 (U.S. NIH Grant/Contract)
- MC0536 (Other Identifier: Mayo Clinic Cancer Center)
- 06-002061 (Other Identifier: Mayo Clinic IRB)
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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