NCT06417177 · University of Missouri-Columbia
Impact of Early Aging and Menopause on the Vascular Responses to Hypoxia
What this study is about
The purpose of this study is to examine hypoxic vasodilation and the role of beta-adrenergic receptors in younger premenopausal, perimenopausal, and older postmenopausal women.
View original scientific description
The purpose of this study is to examine hypoxic vasodilation and the role of beta-adrenergic receptors in younger premenopausal, perimenopausal, and older postmenopausal women.
Interventions
DRUG
Placebo
Participants will receive a placebo in pill form.
DRUG
Propranolol
Participants will receive oral propranolol (1 mg/kg).
DRUG
Gemtesa
Participants will receive oral gemtesa (75 mg).
Primary outcome measures
Forearm blood flow
Time frame: Change from baseline to 5 minutes.
Blood flow in the forearm measured with venous occlusion plethysmography.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Female assigned at birth
- Pre, peri- or post-menopausal
- Healthy weight (BMI ≥18 and ≤30 kg/m2)
Exclusion criteria
- Male (assigned at birth)
- Pregnancy, breastfeeding
- Use of hormone replacement therapies
- Hysterectomy
- Body mass index \>30 kg/m2
- Diagnosed sleep apnea
- Current smoking/Nicotine/Drug use
- Nerve/neurologic disease
- Cardiovascular, hepatic, renal, respiratory disease
- Blood pressure ≥140/90 mmHg
- Diabetes, Polycystic ovarian syndrome
- Communication barriers
- Prescription medications
- Malignant cancer
Where
- Columbia, Missouri
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Sep 9, 2025 · Source of record for eligibility and locations