CompletedNot Applicable

The Impact of Bariatric Surgery on Adipocyte Metabolism

United States28 participantsStarted 2015-03-26

Plain-language summary

The purpose of this study is to understand how daily rhythms of behavior affect the expression of genes in fat cells, and how these daily cycles affect the way fat cells respond to insulin (a hormone that controls blood sugar levels) before and after bariatric surgery.

Who can participate

Age range

18 Years – 55 Years

Sex

FEMALE

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Obese Subjects Inclusion Criteria: * 18-55 years old * Female * BMI greater than 40 kg/m2 * Scheduled for bariatric surgery at the Center for the Surgical Treatment of Obesity at the University of Chicago * Signed informed consent Exclusion Criteria: * Male * Diagnosed with a systemic illnesses, including heart, renal, liver, or malignant disease * Uncontrolled hypertension (blood pressure greater than 140 mmHg systolic and 90 mmHg diastolic without medication) * use of beta blockers * hemoglobin less than 11.5g/dL * known allergy to lidocaine * pregnancy * lactation * Subjects will not have undergone surgery, donated a unit of blood, or participated in another clinical study within the last 4 weeks prior to consent. * Post-menopausal Non-Obese Subjects Inclusion Criteria: * 18-55 years old * Female * BMI less than 30 kg/m2 * Signed informed consent Exclusion Criteria: * Male * Diagnosed with a systemic illnesses, including heart, renal, liver, or malignant disease * Uncontrolled hypertension (blood pressure greater than 140 mmHg systolic and 90 mmHg diastolic without medication) * use of beta blockers * hemoglobin less than 11.5g/dL * known allergy to lidocaine * pregnancy * lactation * Subjects will not have undergone surgery, donated a unit of blood, or participated in another clinical study within the last 4 weeks prior to consent. * Post-menopausal

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Change in insulin sensitivity

Timeframe: 12 weeks

Trial details

NCT IDNCT04242524

SponsorUniversity of Chicago

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2025-12-15

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