Mayo Clinic in Rochester
Rochester, Minnesota, 55905, United States
Location status: Recruiting
Location contact
Kelli A Lytle, PhD
CONTACT
Madeline Reid
CONTACT
NCT Number: NCT06416969
Adults who gain most of their excess weight in the abdominal area typically do not respond to factors that "turn on" fat cells the same way as people who don't have excessive weight. Researchers are trying to understand why fat tissue responds differently in people with different body types.
Interested in participating?
Request Info18 year–65 year
All sexes
Interventional
Early Phase 1
Rochester, Minnesota, 55905, United States
Location status: Recruiting
Kelli A Lytle, PhD
CONTACT
Madeline Reid
CONTACT
Healthy volunteers accepted: Yes
Only the study team can determine whether someone qualifies for participation.
Inclusion criteria
o Upper body/visceral obesity (UBO) in women will be defined as those with a waist-hip ratio (WHR) > 0.85 and/or increased visceral fat by single slice CT scan, usually with > 120 cm2 of visceral fat by CT scanning or a visceral fat/total fat ratio of > 0.30, and/or biochemical evidence of metabolic syndrome as defined by adenosine triphosphate (ATP) III criteria (fasting plasma triglycerides ≥ 150 mg/dL, HDL-cholesterol < 50 mg/dL for women and < 40 mg/dL for men, fasting plasma glucose ≥ 100 mg/dL). Upper body obesity in men will be defined as a waist-hip ratio of >0.95 and/or increased visceral fat (visceral fat area > 120 cm2 or a visceral/total fat abdominal ratio by CT of > 0.40) by single slice CT scan and/or biochemical evidence of metabolic syndrome as defined by ATP III criterial. These visceral fat values are based upon the data collected at Mayo Clinic using our methods, and are correlated with dyslipidemia and hyperinsulinemia.
Exclusion criteria
Intravenous infusion 200 ug/hr for 2 hours, 100 ug/hr for 30 minutes
Intravenous infusion
Time frame: approximately 3.5 hours
regional palmitate release rates (micromol/min) will be measured using a combination of leg and splanchnic blood flow combined with stable isotope tracer measurements of palmitate uptake and release across the leg and splanchnic bed. Upper body, non-splanchnic palmitate release will be calculated as: total palmitate release - (splanchnic palmitate release + (leg palmitate release x 2)). Release rates will be measured at baseline (overnight fasting) and in response to the infusion of somatostatin plus epinephrine. This will allow us to understand the factors that may limit maximum lipolysis stimulation in upper body obesity for leg, splanchnic and upper body non-splanchnic adipose tissue palmitate release.
Time frame: approximately 3.5 hours
we will measure whether stimulated adipose tissue lipolysis from infusions of somatostatin and epinephrine is impaired in UBO and, if so, if this is related to regional differences in lipolysis and lipolysis-regulating proteins;
Time frame: approximately 3.5 hours
We will measure the regional FFA:glycerol release ratio, a measure of intracellular reesterification, differs between UBO and non-UBO adults in a way that accounts for the differences in systemic FFA delivery. This will require the use of both FFA and glycerol tracers.
Contact information is provided by the study sponsor or research team.
Kelli Lytle, PhD
CONTACT
Madeline Reid
CONTACT
Mayo Clinic
Other
Stimulation of Regional Lipolysis and Adipocyte Lipolysis Proteins
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View the official ClinicalTrials.gov record (opens in a new tab)This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.
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