- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04423627
Sympathetic Regulation of Large Artery Stiffness in Humans With ISH (SELECT)
April 17, 2024 updated by: Gary L. Pierce, PhD, University of Iowa
Sympathetic Regulation of Large Artery Stiffness in Humans With Age-Related Isolated Systolic Hypertension
Stiffening of your blood vessels, particularly the large vessels from your heart (called the aorta and carotids) you age contributes to the development of cardiovascular disease (CVD) such as heart attack and stroke.
Nerve activity from your brain to your body also increases with advancing age but it is unknown if this nerve activity contributes directly to the stiffening on your blood vessels in older adults in addition to high blood pressure.
Therefore, successful completion of the proposed aims will have a significant clinical impact by identifying if nerve activity from your brain could be a novel target for therapies that would lower stiffness of the aorta and carotid arteries in older adults.
Study Overview
Status
Recruiting
Conditions
Intervention / Treatment
Study Type
Interventional
Enrollment (Estimated)
78
Phase
- Early Phase 1
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: Amy Stroud, RN, MSN
- Phone Number: 3193849549
- Email: amy-stroud@uiowa.edu
Study Contact Backup
- Name: Gary L Pierce, PhD
- Phone Number: 3193359487
- Email: gary-pierce@uiowa.edu
Study Locations
-
-
Iowa
-
Iowa City, Iowa, United States, 52242
- Recruiting
- University of Iowa
-
Contact:
- Amy Stroud, MSN, RN
- Phone Number: 319-384-9549
- Email: amy-stroud@uiowa.edu
-
Iowa City, Iowa, United States, 52240
- Recruiting
- Amy Stroud
-
Contact:
- Amy Stroud, MSN, RN
- Phone Number: 319-356-9549
- Email: amy-stroud@uiowa.edu
-
Principal Investigator:
- Gary L Pierce, 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
60 years to 85 years (Adult, Older Adult)
Accepts Healthy Volunteers
Yes
Description
Inclusion Criteria:
- age 60-85
- non-smoking
- clinically healthy
- untreated or treated stage 1 isolated systolic hypertension (ISH) (systolic BP 130-139 mmHg; diastolic BP <90 mmHg) or stage 2 ISH (systolic BP 140-159 mmHg; diastolic BP <90 mmHg) per 2017 AHA/ACC hypertension guidelines
- if subject is on antihypertensive medications, they will stop taking medication for a one-week washout period after Visit 1 before they return for Visit 2. They will come in at day 3 and day 7 of the one-week washout for a BP reading, to confirm that systolic BP is <160 mmHg.
Exclusion Criteria:
- no history of cardiovascular disease (e.g., myocardial infarction, bypass surgery, angioplasty/stent, heart failure, cardiomyopathy, pacemaker/defibrillator, peripheral artery disease), pulmonary disease, liver disease, Type I or II diabetes, cancer (treated by chemotherapy and/or radiation), psychiatric illness, on aspirin or other non-steroidal anti-inflammatory drugs (NSAIDs).
- aspirin, NSAIDs, vitamins, herbal supplements, omega-3-fatty acids will have to discontinue for at least 1 week before participation and remain discontinued during the study.
- blood thinners, serotonin reuptake inhibitors (SSRIs), or PDE5 inhibitors will also be excluded.
- Women must be postmenopausal for at least 6 months (surgical or natural) and not currently on hormone replacement therapy.
- Subjects not on antihypertensive will not be eligible if their resting clinic systolic BP is <130 mmHg or >160 mmHg and diastolic BP >90 mmHg.
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
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Triple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Placebo Comparator: Placebo
|
Placebo
|
Experimental: Clonidine
0.2 mg/day oral
|
Clonidine 0.2 mg/day oral tablet
|
Active Comparator: Hydrochlorothiazide
37.5 mg/day oral
|
Hydrochlorothiazide 37.5 mg/day oral tablet
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in carotid-femoral pulse wave velocity
Time Frame: Baseline and after 4 weeks
|
Aortic stiffness
|
Baseline and after 4 weeks
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in carotid distensibility index
Time Frame: Baseline and after 4 weeks
|
Change in carotid distensibility
|
Baseline and after 4 weeks
|
Change in carotid flow pulsatility index
Time Frame: Baseline and after 4 weeks
|
Change in carotid flow pulsatility
|
Baseline and after 4 weeks
|
Change in carotid intimal medial thickness (IMT)
Time Frame: Baseline and after 4 weeks
|
Change in carotid wall thickness
|
Baseline and after 4 weeks
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Investigators
- Principal Investigator: Gary Pierce, PhD, University of Iowa
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 1, 2021
Primary Completion (Estimated)
June 30, 2025
Study Completion (Estimated)
December 30, 2025
Study Registration Dates
First Submitted
June 5, 2020
First Submitted That Met QC Criteria
June 8, 2020
First Posted (Actual)
June 9, 2020
Study Record Updates
Last Update Posted (Actual)
April 19, 2024
Last Update Submitted That Met QC Criteria
April 17, 2024
Last Verified
April 1, 2024
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Cardiovascular Diseases
- Vascular Diseases
- Heart Murmurs
- Essential Hypertension
- Hypertension
- Systolic Murmurs
- Isolated Systolic Hypertension
- Physiological Effects of Drugs
- Adrenergic Agents
- Neurotransmitter Agents
- Molecular Mechanisms of Pharmacological Action
- Antihypertensive Agents
- Autonomic Agents
- Peripheral Nervous System Agents
- Analgesics
- Sensory System Agents
- Adrenergic alpha-2 Receptor Agonists
- Adrenergic alpha-Agonists
- Adrenergic Agonists
- Natriuretic Agents
- Membrane Transport Modulators
- Diuretics
- Sympatholytics
- Sodium Chloride Symporter Inhibitors
- Hydrochlorothiazide
- Clonidine
Other Study ID Numbers
- 202004244
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
NO
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Yes
Studies a U.S. FDA-regulated device product
No
product manufactured in and exported from the U.S.
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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