Oral Contraceptives and Subantimicrobial Doxycycline: Effect on Endometrial MMPs
This trial is active, not recruiting.
|Sponsor||University of Hawaii|
|Collaborator||Charles Drew University of Medicine and Science|
|Start date||November 2011|
|End date||June 2012|
|Trial size||14 participants|
|Trial identifier||NCT01469585, UH DOXY RTRN|
The purpose of this study is to compare the effects (good and bad) of subantimicrobial dose doxycycline on the irregular bleeding women experience when taking continuous oral contraceptive pills. This research is being done because currently, there is no effective treatment for this condition. Findings from this study could help to decrease the side effects of birth control pills and decrease unplanned pregnancies.
|Endpoint classification||efficacy study|
|Intervention model||parallel assignment|
|Masking||single blind (outcomes assessor)|
Determine the effect of combined oral contraceptives on endometrial MMP expression.
time frame: 49 days
Determine the effect of sub-antimicrobial doxycycline on MMP expression and activity in continuous oral contraceptive users.
time frame: 84 days
Female participants from 18 years up to 45 years old.
- Women between the ages 18 and 45 who are ovulatory as demonstrated by a pre-treatment Progesterone (P) greater than or equal to 3.0 ng/mL prior to oral contraceptive use
- Women with any absolute contraindications to EE and LNG;
- Women who are pregnant, breastfeeding or have POS;
- Use of oral contraceptives, patch, ring, intrauterine or implantable hormonal contraception within 4-weeks;
- Medroxyprogesterone acetate use within six months;
- Current use of drugs that interfere with sex steroid metabolism.
|Official title||Oral Contraceptives and Subantimicrobial Doxycycline: Effect on Endometrial MMPs|
|Principal investigator||Bliss Kaneshiro, MD, MPH|
|Description||Continuous oral contraceptive administration entails women taking hormonally active pills for 28 days without a seven day placebo week to avoid hormonal withdrawal bleeding. Unfortunately, with continuous administration, timed, regular bleeding can be replace by irregular, unscheduled bleeding, which often leads to dissatisfaction, discontinuation and the possibility of unplanned pregnancy. MMPs, a group of zinc-dependant proteases, are hypothesized to play a role in endometrial degradation. The purpose of this study is to describe the expression of MMPs in endometrial biopsy (EMB) specimens collected 1) prior to initiating oral contraceptives 2) while taking cyclic oral contraceptive 3) while taking continuous oral contraceptives and 4) while taking continuous oral contraceptives along with sub-antimicrobial doxycycline.|
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