Health Effects of Liposuction in Overweight Women With Elevated Insulin Levels, Impaired Glucose Tolerance and/or Type 2 Diabetes

2014-07-23 21:56:31 | BioPortfolio


This study is for women who have already decided to undergo liposuction at Georgetown University Medical Center in Washington, D.C. To take part in this study, a woman must first meet with the plastic surgeons there, and be accepted by them to have liposuction. This study will investigate whether large volume liposuction improves risk factors for heart disease in overweight women with type 2 (adult onset) diabetes, impaired glucose tolerance, or elevated blood insulin levels. Large volume liposuction is the surgical removal of at least 10 pounds (4.5 kg) of body fat, usually from the abdomen, hips or chest. Risk factors for heart disease include high blood pressure and elevated levels of blood lipids (cholesterol and triglycerides), blood glucose (sugar), and blood insulin. Subjects who participate in all parts of this study will receive a total of $930.00.

Overweight women 18 years or older with high blood insulin levels, impaired glucose tolerance, or type 2 diabetes, who are planning to have large volume liposuction performed at Georgetown University Medical Center in Washington, D.C., may be eligible for this study. For a subject to be accepted into this study, she must first meet with the plastic surgeons at Georgetown University Medical Center, and they have to agree to perform large volume liposuction. The decision that someone is suitable for liposuction is not under the control of the NIH or of any NIH investigator.

Those enrolled will undergo the following procedures at four separate times - before undergoing liposuction, 4 weeks after surgery, 4 months after surgery and 1 year after surgery:

- Body measurements - taken with calipers to measure several skinfold thicknesses (the width of a fat fold) and with a tape measure to measure the circumference of parts of the body.

- Urine sample and 6-hour urine collection - to test for pregnancy and to evaluate kidney function.

- Glucose tolerance test - measures insulin sensitivity and how the body uses sugar, how well insulin works, and insulin sensitivity. The procedure involves placement of two catheters (thin, flexible tubes) through a needle into a vein in each arm. Sugar water is infused into one catheter and 20 minutes into the test a small amount of insulin is injected. Blood samples are drawn from the other catheter at frequent intervals for a total of 5 hours.

- Electrocardiogram (ECG) and echocardiography - measure the heart's electrical activity and function.

- Abdominal computerized tomography (CT) scan - produces images for measuring body fat in the abdomen. (not done at the 4-week visit). Takes about half an hour to complete.

- DXA X-ray - measures body fat, muscle and bone mineral content. Takes about half an hour to complete.

- Bod Pod - capsule-like device used to determine the proportion of body weight composed of fat and non-fat tissue. Takes less than 10 minutes

- Bioelectric impedance analysis device - measures the proportions of body fat based on electrical conduction of a small electric current. Takes 2-3 minutes.

- 24-hour blood pressure monitoring - a device attached to a blood pressure cuff strapped to the arm measures blood pressure every 15 to 30 minutes continuously for 24 hours.

- Vascular reactivity tests - a blood pressure cuff is inflated for about 4 minutes before deflating, providing information on the function of the small blood vessels in the skin, as well as an idea of the function level of small blood vessels elsewhere in the body. Takes half an hour.

- Blood samples - collected to evaluate kidney and liver function and to measure body lipids, such as cholesterol, minerals, and other substances.


Obesity is a major predisposing factor for future Type 2 diabetes because it is often associated with insulin resistance and impaired glucose tolerance. Insulin resistance has been suggested as the common link for other aspects of the cardiac dysmetabolic syndrome that includes hypertension, dyslipidemia, obesity, and macrovascular arterial disease. There are racial disparities in the prevalence of both obesity and Type 2 diabetes: Compared with non-Hispanic Caucasians, African American women have almost twice the prevalence of overweight, obesity, and Type 2 diabetes.

Because data from predominantly Caucasian populations suggest that the quantity of truncal (sometimes called upper body) adipose tissue, which includes the adipose tissue surrounding the abdominal viscera, is far more important for risk stratification than that found in the limbs or buttocks, which contain subcutaneous adipose tissue, it has been presumed that attempts at treatment of obesity should concentrate on reducing visceral fat. However, despite their greater risks for the complications of obesity, African Americans have less visceral abdominal adipose tissue than Caucasians matched for body weight. Further, recent metabolic studies suggest that upper body subcutaneous adipose tissue may play a significant role, particularly for African Americans, in the comorbid metabolic conditions associated with obesity.

With the advent of the large volume liposuction technique, selective removal of substantial quantities of subcutaneous adipose tissue has become possible. It is unknown whether the complications of obesity can be ameliorated by removal of subcutaneous adipose tissue, but one preliminary study suggests that fasting hyperinsulinism can be improved by this approach.

We propose to conduct a pilot study of 10 patients (five Caucasians and five African-Americans) who plan to undergo liposuction. We will investigate how large volume liposuction affects the metabolic complications of obesity in overweight patients who have hyperinsulinemia, impaired glucose tolerance, or type 2 diabetes. We will investigate the effects of liposuction on various indices of the cardiac dysmetabolic syndrome by performing studies of insulin sensitivity and lipid metabolism at four time points: before large volume liposuction, 1 month after liposuction, 4 months after liposuction, and 1 year after liposuction. At each visit we will study body composition, blood pressure, cardiac function, dietary habits, insulin insensitivity, free fatty acids, and lipid profiles.

Study Design



Glucose Intolerance


National Institute of Child Health and Human Development (NICHD)
United States




National Institutes of Health Clinical Center (CC)

Results (where available)

View Results


Published on BioPortfolio: 2014-07-23T21:56:31-0400

Clinical Trials [984 Associated Clinical Trials listed on BioPortfolio]

Prevention of Corticosteroid-Induced Glucose Intolerance

Glucose intolerance is frequent and serious complication of corticosteroid therapy. the aim of the study is to examine the hypothesis that co treatment with rosiglitazone can prevent gluco...

C-Reactive Protein and Endothelial Dysfunction in Women With Glucose Intolerance

The goal of this study is to determine whether markers of vascular inflammation (such as c-reactive protein) can predict endothelial dysfunction (as measured by flow-mediated dilation) in ...

Carbohydrate Intolerance Questionnaire Study

The purpose of this study is to evaluate the validity of using a carbohydrate intolerance questionnaire (CIQ) and/or other health markers as a means of predicting response to insulin sensi...

Cohort Study for Clinical Research in Gangnam Severance Hospital

The prevalence of type 2 diabetes has consistently increased and type 2 diabetes can cause many types of vascular complications. Diabetes develops due to glucose intolerance. Early detecti...

Microbiome and Non-caloric Artificial Sweeteners in Humans

Non-caloric artificial sweeteners (NAS) are common food supplements consumed by millions worldwide as means of combating weight gain and diabetes, by retaining sweet taste without increasi...

PubMed Articles [2880 Associated PubMed Articles listed on BioPortfolio]

Glutathione S-transferase P Deficiency Induces Glucose Intolerance via JNK-dependent Enhancement of Hepatic Gluconeogenesis.

Hepatic glutathione S-transferases (GSTs) are dysregulated in human obesity, non-alcoholic fatty liver disease (NAFLD) and diabetes. The multifunctional GST Pi isoform (GSTP) catalyzes the conjugation...

Lnk/Sh2b3 Regulates Adipose Inflammation and Glucose Tolerance through Group 1 ILCs.

Lnk/Sh2b3 is an adaptor protein that negatively regulates cytokine signaling in lymphohematopoiesis. A missense variant within the LNK/SH2B3 gene has been reported to be a risk variant for several aut...

Glucose intolerance in children with cystic fibrosis: a developing country's perspective.

Background Cystic fibrosis-related diabetes (CFRD) is a common comorbidity reported in patients with cystic fibrosis (CF). There is a dearth of data on glucose intolerance or CFRD in children with CF ...

Glucose intolerance in monosodium glutamate obesity is linked to hyperglucagonemia and insulin resistance in α cells.

Obesity predisposes to glucose intolerance and type 2 diabetes (T2D). This disease is often characterized by insulin resistance, changes in insulin clearance, and β-cell dysfunction. However, studies...

Design and synthesis of rosiglitazone-ferulic acid-nitric oxide donor trihybrids for improving glucose tolerance.

Glucose intolerance is associated with metabolic syndrome and type 2 diabetes mellitus (T2DM) while some new therapeutic drugs, such as rosiglitazone (Rosi), for T2DM can cause severe cardiovascular s...

Medical and Biotech [MESH] Definitions

A pathological state in which BLOOD GLUCOSE level is less than approximately 140 mg/100 ml of PLASMA at fasting, and above approximately 200 mg/100 ml plasma at 30-, 60-, or 90-minute during a GLUCOSE TOLERANCE TEST. This condition is seen frequently in DIABETES MELLITUS, but also occurs with other diseases and MALNUTRITION.

A heterogeneous group of disorders characterized by HYPERGLYCEMIA and GLUCOSE INTOLERANCE.

Maintenance of a constant blood glucose level by perfusion or infusion with glucose or insulin. It is used for the study of metabolic rates (e.g., in glucose, lipid, amino acid metabolism) at constant glucose concentration.

An enzyme which catalyzes the hydrolysis of LACTOSE to D-GALACTOSE and D-GLUCOSE. Defects in the enzyme cause LACTOSE INTOLERANCE.

A glucose transport facilitator that is expressed primarily in PANCREATIC BETA CELLS; LIVER; and KIDNEYS. It may function as a GLUCOSE sensor to regulate INSULIN release and glucose HOMEOSTASIS.

More From BioPortfolio on "Health Effects of Liposuction in Overweight Women With Elevated Insulin Levels, Impaired Glucose Tolerance and/or Type 2 Diabetes"

Quick Search


Relevant Topics

Women's Health
Women's Health - key topics include breast cancer, pregnancy, menopause, stroke Follow and track Women's Health News on BioPortfolio: Women's Health News RSS Women'...

Cardiovascular disease (CVD)
Acute Coronary Syndromes (ACS) Blood Cardiovascular Dialysis Hypertension Stent Stroke Vascular Cardiovascular disease (CVD) includes all the diseases of the heart and circulation including coronary heart disease (angina...

Obesity is the condition in which excess fat has accumulated in the body (mostly in subcutaneous tissues). clinical obesity is considered to be present when a person has a BMI of over 30 (Oxford Dictionary of Medicine). It is becoming increasing common i...

Searches Linking to this Trial