This study investigates the response of vaginal and cervical tissue after exposure to three vaginal products: hydroxyethyl cellulose (HEC) placebo, nonoxynol-9 (N9) and imiquimod (IMQ) cream.
Each woman in this study will be evaluated 5 separate times: 1. Baseline in the follicular phase of the menstrual cycle; 2. Baseline in the luteal phase of the menstrual cycle; 3. After a 3 day (4 dose) treatment with HEC placebo; 4. After a 3 day (4 dose) treatment of 4% N-9; 5. After a 2 day (2 dose) treatment of IMQ. A subset of 5 women will have an additional baseline visit in the follicular phase. The order of the N-9 and IMQ treatments is randomized. The study is cross over in design. The per sequence of treatments is as follows: Baseline in the follicular phase of the menstrual cycle, next is baseline in the luteal phase of the menstrual cycle, next is after a 3 day (4 dose) treatment with HEC placebo. At this point in the study, half of the participants are randomized to do the N-9 treatment and then the IMQ treatment. The remaining half of the participants do the IMQ treatment and then the N-9 treatment. All participants are sampled at the 5 timepoints described above.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
20
Participants first have sampling in the follicular and luteal phases of the menstrual cycle. Then participants receive 4 doses of HEC placebo gel in the luteal phase. Finally, participants are randomized to the order of IMiquimod, 2 doses vaginally, in the luteal phase and nonoxynol-9, 4%, 4 doses vaginally in the luteal phase.
Participants first have sampling in the follicular and luteal phases of the menstrual cycle. Then participants receive 4 doses of HEC placebo gel in the luteal phase. Finally, participants are randomized to the order of IMiquimod, 2 doses vaginally, in the luteal phase and nonoxynol-9, 4%, 4 doses vaginally in the luteal phase.
Participants first have sampling in the follicular and luteal phases of the menstrual cycle. Then participants receive 4 doses of HEC placebo gel in the luteal phase. Finally, participants are randomized to the order of IMiquimod, 2 doses vaginally, in the luteal phase and nonoxynol-9, 4%, 4 doses vaginally in the luteal phase.
Eastern Virginia Medical School CONRAD Clinical Research Center
Norfolk, Virginia, United States
Differential Microarray gene expression (particularly looking at pathways involved in inflammation and immune response) in vaginal tissues after exposure to N9, HEC or imiquimod
These data are still undergoing analysis
Time frame: Biopsies are performed 8 - 18 hours after exposure to each product
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