Clinical Trials Logo

Clinical Trial Summary

The purpose of this study is to help us determine how hormones impact the production of cervical mucus which is a fluid secreted by the opening of the uterus, also called the cervix. During a normal menstrual cycle, cervical mucus changes in response to two hormones that the ovaries make: estrogen and progesterone. Many of the birth control methods women use thicken mucus and make it less likely for sperm to enter the uterus. The goal of this study is to better understand the effects estrogen and progesterone have on the cervical mucus in the body. To do this, the investigators will be using a drug that suppresses natural hormone production for 3 months. Estrogen and progesterone will be artificially replaced to better understand their effects. The investigators will also be studying the effect of a common birth control pill that may work by thickening cervical mucus. Last, the investigators will study some of the cells in the cervix that produce mucus.


Clinical Trial Description

This proposed study is to evaluate the temporal changes in human cervical mucus in response to progesterone and progestins as an initial step toward clarifying these relationships. Our hypothesis is that direct effects of progesterone on the endocervix, independent of estrogen withdrawal, cause contraceptive changes to cervical mucus. To study this, a randomized, prospective, crossover study will be conducted by examining cervical mucus changes in a small cohort of women in whom investigators will suppress circulating hormonal levels by administering a GnRH antagonist. Investigators will then artificially replace Estrogen and Progesterone in order to differentiate their effects on clinical and laboratory measurements of mucus quality. The investigators will be looking closely at the immediate changes in mucus when .35 mg of norethindrone, a marketed drug is administered in this experimental setting. Cervical cell samples will also be collected at various time points and perform RT-PCR to determine whether genes for membrane bound progesterone receptor are expressed and regulated by Estrogen and Progesterone. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT02969590
Study type Interventional
Source Oregon Health and Science University
Contact
Status Completed
Phase Phase 4
Start date March 29, 2015
Completion date August 23, 2017

See also
  Status Clinical Trial Phase
Completed NCT02577601 - Impact of Combined Hormonal Contraceptives on UPA Phase 4
Completed NCT03153644 - Improving Contraceptive Care for Women With Medical Conditions
Completed NCT04112095 - Adherence With Continuous-dose Oral Contraceptive: Evaluation of Self-Selection and Use Phase 3
Recruiting NCT05521646 - Implementing Best Practice Postpartum Contraceptive Services Through a Quality Improvement Initiative N/A
Active, not recruiting NCT04291001 - Ovarian Function With ENG Implant and UPA Use Early Phase 1
Completed NCT04568980 - Assessment of Contraceptive Safety and Effectiveness in Cystic Fibrosis
Completed NCT03438682 - Real World Effectiveness and Safety of Hysteroscopic (Essure®) Compared to Laparoscopic Sterilization
Active, not recruiting NCT01948882 - Evaluation of Safety and Effectiveness of the Essure (Model ESS505) Device to Prevent Pregnancy in Women N/A
Enrolling by invitation NCT04997499 - Adolescent Subcutaneous (SQ) Injection Video Validation N/A
Recruiting NCT03589040 - Darunavir and Rilpivirine Interactions With Etonogestrel Contraceptive Implant Phase 2
Completed NCT04463680 - Rifampin and the Contraceptive Implant Phase 4
Completed NCT03154125 - Sayana® Press Extension Study Phase 3
Withdrawn NCT03725358 - A Cluster-RCT to Increase the Uptake of LARCs Among Adolescent Females and Young Women in Cameroon. N/A
Completed NCT02957630 - "E4/DRSP Endocrine Function, Metabolic Control and Hemostasis Study" Phase 1/Phase 2
Completed NCT02456584 - Pharmacodynamics and Pharmacokinetics Study of Existing DMPA Contraceptive Methods Phase 1
Completed NCT02718222 - Impact and Performance of Institutionalizing Immediate Post-partum IUD Services N/A
Recruiting NCT02121067 - LNG-IUS at 2 Weeks Postpartum Phase 4
Terminated NCT02169869 - Immediate Postplacental IUD Insertion N/A
Recruiting NCT02292056 - Medication Safety and Contraceptive Counseling for Reproductive Aged Women With Psychiatric Conditions N/A
Withdrawn NCT01930994 - Kenya Sino-implant (II) PK Study N/A