Obesity, Insulin Resistance, and PASC: Persistent SARS-CoV-2
Obesity, Insulin Resistance, and PASC: Persistent SARS-CoV-2 Infection and Inflammation in Human Adipose Tissue
Stanford University
55 participants
Jun 6, 2023
INTERVENTIONAL
Conditions
Summary
The investigators are studying the pathophysiologic links between obesity, insulin resistance (IR), adipose tissue infection, and post-acute sequelae of COVID-19 (PASC). This study looks at whether adipose (fat) tissue contributes to PASC by driving chronic inflammation or by serving as a reservoir for SARS-CoV-2 persistence. The results will not only determine whether obesity and IR are risk factors for PASC, but will also define fundamental biology that sets the stage for the investigation of novel or existing therapies that target the causal pathways identified.
Eligibility
Plain Language Summary
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Interventions
After an overnight fast, approximately 1-2 grams of subcutaneous fat will be removed by a needle. Participants will have a local anesthetic prior to the procedure. The needle fat biopsy will be repeated at quarterly intervals for one year (every 3 months). We will also draw 1 10mL tube of blood at each biopsy for measurement of inflammatory cytokines.
An Insulin Sensitivity Test (SSPG: Steady State Plasma Glucose) is performed to determine if participants are insulin sensitive or insulin resistant. This test is approximately 5-6 hours in length. Participants will be asked to fast for 12 hours. The insulin sensitivity test is designed to measure how well your cells remove glucose from your blood in response to insulin. During this test participants will have two small catheters (tubing) placed in their veins (I.V. lines). The total amount of blood that will be drawn during this test will be 140 mL of blood (approximately 9.5 tablespoons). Insulin is a natural hormone, and octreotide (a synthetic hormone) is a drug that temporarily blocks the secretion of insulin from your pancreas. A member of the research team is present and monitoring the results along with the nursing staff.
Locations(2)
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NCT05833217