- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT06043310
Estrogen and Microvascular Function
September 12, 2023 updated by: Julie K. Freed, Medical College of Wisconsin
Sex-specific Effects of Continuous Estrogen on Human in Vivo Microvascular Function
The goal of this study is to learn how long-term use of estrogen affects blood vessels in healthy adults who were assigned male at birth.
Participants will:
- give one blood draw of 5 mL
- have a camera placed under the tongue to take pictures of blood vessels
- have 2 laser Doppler microdialysis catheters placed on the forearm to monitor blood vessels before and after local drug infusion
Researchers will compare blood vessel function of those who take estrogen supplements to those who do not.
Study Overview
Status
Recruiting
Conditions
Intervention / Treatment
Study Type
Observational
Enrollment (Estimated)
20
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Contact
- Name: Shona Hang
- Phone Number: 414-955-2348
- Email: shang@mcw.edu
Study Locations
-
-
Wisconsin
-
Wauwatosa, Wisconsin, United States, 53226
- Recruiting
- Froedtert Hospital
-
Contact:
- Shona Hang
- Phone Number: 414-955-2348
- Email: shang@mcw.edu
-
Principal Investigator:
- Julie Freed, MD, PhD
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
- Adult
Accepts Healthy Volunteers
N/A
Sampling Method
Non-Probability Sample
Study Population
Community sample
Description
Inclusion Criteria:
- Adults aged 18-60 years
- Identify as assigned male at birth (AMAB) +/- continuous estrogen treatment for a minimum of 1 year.
- Blood pressure <140/ < 90 mmHg
- No more than 1 cardiovascular risk factor
Exclusion Criteria:
- BMI >35
- Medications that could alter cardiovascular control
- Rash, skin disease, or pigmentation disorders
- Anemia
- Kidney Disease
- Known skin allergies
- Smoking or tobacco use within last 6 months
- Coronary Artery Disease
- > 1 cardiovascular risk factor
- Hypertension
- Diabetes
- Hypercholesterolemia
- Hyperlipidemia
- Bleeding disorders
- Use of anti-coagulants
- Allergies to study drugs
- Erectile dysfunction medication in the past 6 months
- Use of topical/non-topical steroids in last 6 months
- Internal mouth sores
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
AMAB + continuous estrogen
Identify as assigned male at birth (AMAB) who have had continuous estrogen treatment for a minimum of 1 year.
|
L-NAME will be infused locally through microdialysis catheters.
ACh will be infused locally through microdialysis catheters.
SNP will be infused locally through microdialysis catheters.
|
AMAB - continuous estrogen
Identify as assigned male at birth (AMAB) who have not had continuous estrogen treatment for a minimum of 1 year.
|
L-NAME will be infused locally through microdialysis catheters.
ACh will be infused locally through microdialysis catheters.
SNP will be infused locally through microdialysis catheters.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in Perfused Vessel Density
Time Frame: 0.5 hours
|
Total vessel density (TVD) will be calculated using the DeBacker Score manual analysis on all images that have a minimum microcirculation image quality score (MIQS) of 10.
Perfused vessel density (PVD) will be calculated by multiplying total vessel density (TVD) x proportion of perfused vessels (PPV%).
|
0.5 hours
|
Change in blood vessel dilation
Time Frame: 2 hours
|
Cutaneous vascular conductance in response to acetylcholine, L-NAME, and sodium nitroprusside infusions will be calculated as percentage of cardiovascular conductance.
|
2 hours
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Actual)
June 2, 2023
Primary Completion (Estimated)
December 1, 2029
Study Completion (Estimated)
December 1, 2029
Study Registration Dates
First Submitted
September 12, 2023
First Submitted That Met QC Criteria
September 12, 2023
First Posted (Actual)
September 21, 2023
Study Record Updates
Last Update Posted (Actual)
September 21, 2023
Last Update Submitted That Met QC Criteria
September 12, 2023
Last Verified
September 1, 2023
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- PRO40920
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Yes
Studies a U.S. FDA-regulated device product
No
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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