The Effects of Tirzepatide Use on Muscle and Vascular Function Among Obese Older Adults
The University of Texas Health Science Center at San Antonio
Summary
Obesity and type 2 diabetes mellitus (T2DM) represent major public health concerns in the aging community. Tirzepatide, a novel dual glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) receptor agonist recently approved for the treatment of T2DM and obesity has been shown to be effective at reducing weight, improving markers of T2DM control, and improving cardiovascular health. Utilization of tirzepatide among older adults has been on the rise since FDA approval was issued, however the effects of tirzepatide use on functional outcomes in older adults with obesity are not well established. Recent studies show that weight loss caused by tirzepatide may be driven by substantial loss of lean muscle mass, which may contribute to weakness and frailty, particularly among older adults. The proposed pilot study aims to evaluate how treatment with tirzepatide for 6 months affects muscle mass and function among older adults, and if changes in muscle mass are linked to changes in functional status over the same time period.
Description
This study is a pilot, single-arm, open-label clinical trial to evaluate the effects of Tirzepatide on muscle mass, strength, and vascular health among older adults with obesity. This study is set in South Texas, where rates of obesity and related health issues, including type 2 diabetes and cardiovascular conditions, exceed national averages and where aging-related diseases are on the rise. Tirzepatide is a new FDA approved medication that promotes weight loss and improves health by targeting specific pathways in the body. While it has been shown to be effective in managing weight and blood s…
Eligibility
- Age range
- 50+ years
- Sex
- All
- Healthy volunteers
- No
Inclusion Criteria * Men and postmenopausal women aged 50 years or older. * Body Mass Index (BMI) ≥30 kg/m². * Untreated HbA1c \<6.5% at baseline. * Willingness and ability to comply with all study procedures, including fasting requirements for certain visits. * Able to provide informed consent and participate in all study assessments. Exclusion Criteria * Active diagnosis of type 2 diabetes mellitus (T2DM), defined by active use of glucose-lowering medications or hemoglobin A1c ≥ 6.5%. * Body Mass Index (BMI) ≥ 40 kg/m². * Moderate to severe gastroesophageal reflux disease based on patient…
Interventions
- DrugTirzepatide
Once weekly tirzepatide starting at 2.5 mg/weekly, with dose escalation monthly by 2.5 mg to a target dose of 10 mg/weekly or maximum tolerated
Location
- University of Texas Health Science Center at San AntonioSan Antonio, Texas