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This study is designed to look at the effect of Pioglitazone treatment on the body's ability to burn food in order to produce energy.
Skeletal muscle mitochondrial defects are a sine qua non of insulin resistance in patients with T2DM. Pioglitazone decreases free fatty acid levels and restores mitochondria number in adipose tissue whereas high fat diet and lipid infusion decreases genes involved in mitochondrial biogenesis. Increased lipid flux from diet or adipose tissue into skeletal muscle might be the cause of decreased mitochondrial biogenesis. The purpose of this study is to determine if 22 weeks treatment with Pioglitazone can increase mitochondrial biogenesis in muscle in 30 uncomplicated T2DM patients that were previously not taking TZD's. This Phase IV, randomized, double-blind, placebo controlled, clinical trial will consist of 3 phases: a screening, a placebo / Pioglitazone phase (12 weeks) and a weight loss period (6-10 weeks). The primary endpoint is to identify the changes in skeletal muscle mitochondria number and gene expression. Secondary endpoints include MRS measured mitochondrial capacity, insulin sensitivity for glucose disposal and insulin suppression of free fatty acids, electron transport chain activity, mitochondrial content and intra hepatic and intra myocellular lipid. Metformin and Sulfonylurea will be used as standardized oral therapy to maintain HbA1C < 7.0. After completing the protocol, patients will be offered a very low calorie liquid diet (800kcal/d) to assist them in losing weight. During this period they will continue on their previously randomized treatment. When patients lose 10% of their body weight, patients will be switched to a weight maintenance diet (meal replacement with 1 can of glucerna at breakfast and lunch with a "healthy" dinner) for 10 days. MRS measured mitochondrial capacity will again be determined to see if weight loss + pioglitazone has more effect on mitochondrial function than pioglitazone alone.
Allocation: Randomized, Control: Placebo Control, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Treatment
Diabetes Mellitus, Type 2
Pennington Biomedical Research Center
Pennington Biomedical Research Center
Published on BioPortfolio: 2014-07-23T21:34:39-0400
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A subclass of DIABETES MELLITUS that is not INSULIN-responsive or dependent (NIDDM). It is characterized initially by INSULIN RESISTANCE and HYPERINSULINEMIA; and eventually by GLUCOSE INTOLERANCE; HYPERGLYCEMIA; and overt diabetes. Type II diabetes mellitus is no longer considered a disease exclusively found in adults. Patients seldom develop KETOSIS but often exhibit OBESITY.
The time period before the development of symptomatic diabetes. For example, certain risk factors can be observed in subjects who subsequently develop INSULIN RESISTANCE as in type 2 diabetes (DIABETES MELLITUS, TYPE 2).
A subtype of DIABETES MELLITUS that is characterized by INSULIN deficiency. It is manifested by the sudden onset of severe HYPERGLYCEMIA, rapid progression to DIABETIC KETOACIDOSIS, and DEATH unless treated with insulin. The disease may occur at any age, but is most common in childhood or adolescence.
A type of diabetes mellitus that is characterized by severe INSULIN RESISTANCE and LIPODYSTROPHY. The latter may be generalized, partial, acquired, or congenital (LIPODYSTROPHY, CONGENITAL GENERALIZED).
A life-threatening complication of diabetes mellitus, primarily of TYPE 1 DIABETES MELLITUS with severe INSULIN deficiency and extreme HYPERGLYCEMIA. It is characterized by excessive LIPOLYSIS, oxidation of FATTY ACIDS, production of KETONE BODIES, a sweet smell to the breath (KETOSIS;) DEHYDRATION; and depressed consciousness leading to COMA.
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