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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT06129110
Other study ID # 23-0545
Secondary ID 1R01DK134706-01A
Status Recruiting
Phase N/A
First received
Last updated
Start date January 1, 2024
Est. completion date December 1, 2029

Study information

Verified date April 2024
Source University of Colorado, Denver
Contact Bryan Bergman, PhD
Phone 3037243919
Email bryan.bergman@cuanschutz.edu
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The goal of this intervention study is to learn about how weight loss impacts molecular signaling of intermuscular adipose tissue (IMAT) in individuals with obesity. The main question it aims to answer is how inflammatory molecules secreted by IMAT promote muscle insulin resistance and inflammation, and how these same molecules are diminished after weight loss. Following screening visits involving body composition measures, blood testing, strength testing, and a thigh muscle biopsy, participants will go through a 12-week dietary intervention for weight loss. After 12 weeks, this will be followed by the same testing and biopsies that were completed before the intervention. Researchers will then compare outcomes of individuals who lost weight to individuals who did not lose weight.


Recruitment information / eligibility

Status Recruiting
Enrollment 70
Est. completion date December 1, 2029
Est. primary completion date December 1, 2028
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years to 70 Years
Eligibility Inclusion Criteria: - Generally healthy men and women aged 18-70 - BMI between 30-40 - Less than 1 hour of exercise per week - Women: 1. may be pre or post menopausal Exclusion Criteria: - Type 1 or Type 2 diabetes - Thyroid disease - History of lung disease - Active use of nicotine - Severe plasma lipid disorders - Taking hormone replacement drugs, blood thinners, or thiazoladinediones - Women: 1. Currently going through menopause or peri-menopause 2. Pregnant or breastfeeding 3. History of Polycystic Ovary Syndrome

Study Design


Intervention

Behavioral:
Diet Weight Loss
Low calorie diet of meal replacement shakes

Locations

Country Name City State
United States University of Colorado Anschutz Aurora Colorado

Sponsors (3)

Lead Sponsor Collaborator
University of Colorado, Denver National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), National Institutes of Health (NIH)

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Insulin Sensitivity Participants will undergo a standard 3-hour hyperinsulinemic/euglycemic clamp with insulin infused at 80 mU/m2/min, and glucose clamped at 90 mg/dl with a variable dextrose infusion. 12 weeks
Primary Body Weight Participant weight will be measured using BodyTrace scales during the 12 week intervention. 12 weeks
Primary IMAT Content A multi-slice MRI will be used to quantify IMAT and muscle content in both legs with acquisition of ~20 axial images (10 mm thickness) with 10 mm spacing between images starting superior to the patella. IMAT content will be quantified using the well-validated Sirlin 6-echo method and normalized to muscle volume. 12 weeks
Primary Muscle Mass A multi-slice MRI will be used to quantify IMAT and muscle content in both legs with acquisition of ~20 axial images (10 mm thickness) with 10 mm spacing between images starting superior to the patella. Muscle volume will be quantified using standard methods with anatomical cross-sectional area evaluated in each T1 weighted, high resolution, gradient echo profile scan, and multiplied by the length of the muscle. 12 weeks
Primary Muscle Strength Participants will perform quadriceps muscle strength testing using an isokinetic dynamometer. 12 weeks
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