- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03763357
Acute Effects of Leg Heating on Skeletal Muscle Blood Flow
Acute Effects of Leg Heating on Skeletal Muscle Blood Flow in Patients With Symptomatic Peripheral Artery Disease
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Cilostazol is the only effective medication available to treat walking pain (intermittent claudication) and it has multiple side effects. Overall improvement in walking performance in patients who use cilostazol is small. Endovascular and surgical interventions are effective alternatives for patients who don't respond to medical therapy, however, these procedures are costly and only applicable to patients with certain lesions types and carry a high risk of restenosis.
Heat therapy (HT) is an emerging non-invasive approach that has been shown to enhance vascular function of the leg in old individuals. The objective of this study is to test the hypothesis that a single session of heat therapy will increase local muscle tissue blood flow in the calf of patients with PAD as assessed by PET/CT imaging of generator-based 62Cu-ETS.
Subjects who have met inclusion criteria will volunteer for a single experimental visit. Participants will wear the water circulating pants and asked to rest supine for 30 minutes inside the scanner. Water at 43 degrees C will be perfused through the pants for 90 minutes with the goal to increase skin temperature in the calf to 39 degrees C. IV injections of 62Cu-ETS and subsequent perfusion imaging will be performed at the end of the 30 minute baseline period, after 45 minutes of heat therapy and at the end of the intervention (90 minutes). Due to the short half life of 62Cu, radioactivity from the prior administrations will not interfere with acquisition of a subsequent PET scan at this timing interval.
Study Type
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Bruno T Roseguini, PhD
- Phone Number: 765-496-2612
- Email: brosegui@purdue.edu
Study Contact Backup
- Name: Janet S Klein, RN, MSN
- Phone Number: 317-962-0287
- Email: jswklein@iupui.edu
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Child
- Adult
- Older Adult
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Men and women with a stable symptomatic claudication for >/= 6 months
- Ankle brachial index < 0.9
Exclusion Criteria:
- Uncontrolled diabetes
- Heart failure
- COPD
- Critical limb ischemia
- Prior amputation
- Exercise-limiting co-morbidity
- Recent (< 3 months) intra-inguinal revascularization or planned in study period
- Plans to change medical therapy during duration of study
- Active cancer
- Chronic kidney disease (eGFR < 30)
- HIV positive, active HBV or HCV disease
- Presence of an clinical condition that makes the patient not suitable to participate in the trial
- Peripheral neuropathy, numbness or paresthesia in the legs
- Morbid obesity BMI > 36 or unable to fit into water-circulating pants
- Open wounds or ulcers on the extremity
- Claustrophobia/unable to tolerate PET/CT scanning
- Women of child-bearing age
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Heat Therapy
Subject will dress in water-circulating trousers that are connected to a Heat Therapy (HT) pump.
Warm water (42-43 degrees C) will be perfused through the pants for 90 minutes.
|
Water at 42-43 degrees C will be circulated through the water circulating trousers to obtain calf skin temperature 39 degrees C followed by PET/CT imaging of generator-based 62Cu-ETS.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in calf blood flow
Time Frame: Blood flow measurements will be completed at baseline (0 minutes) and after 45 and 90 minutes of exposure to heat therapy or a control regimen
|
Calf muscle perfusion rate (mL⋅min-1⋅g-1) will be obtained after administration of tracer 62Cu-ETS before, during and after exposure to heat therapy or a control intervention.
Changes from in perfusion rate from baseline to 45 minutes and 90 minutes of heating or control will be measured.
|
Blood flow measurements will be completed at baseline (0 minutes) and after 45 and 90 minutes of exposure to heat therapy or a control regimen
|
Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start (Anticipated)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 1809400414
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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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