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The Metabolic Effects of Acute Hyperglycemia in Patients With Type 2 Diabetes

2014-08-27 03:31:35 | BioPortfolio

Summary

The purpose of the study is to characterize the changes in amino acid, lipid and glucose metabolism in patients with type 2 diabetes exposed to acute hyperglycemia. Moreover we wish to assess the effect of acute hyperglycemia on cardiac output.

Description

Cardiovascular disease is the main cause of death in modern Western societies. Obesity, diabetes and the metabolic syndrome are the main risk factors for cardiovascular disease. People with type 2 diabetes and no history of heart disease have a risk of myocardial infarction similar to the risk in non-diabetic patients with known heart disease.

However, the causal relationship between obesity, diabetes and cardiovascular disease is unclear. Insulin resistance leads to many metabolic abnormalities, including high circulating levels of free fatty acids (FFA). FFA induces insulin resistance and may lead to beta cell failure. In addition FFA may directly worsen the metabolic and electrochemical performance of the working heart. Moreover it is still unclear how acute hyperglycemia affects cardiac output.

In this study our purpose is to characterize the changes in amino acid, lipid and glucose metabolism in patients with type 2 diabetes exposed to acute hyperglycemia (blood glucose between 18 and 20 mmol/L) compared to the amino acid, lipid and glucose metabolism at a normal glucose level (blood glucose between 5 and 7 mmol/L). The results from the patients with type 2 diabetes will be compared with results from healthy controls examined in a fasting basal state. The patients must not suffer from any kind of serious heart disease and should be treated with insulin.

Moreover we wish to compare cardiac output at high and normal blood glucose levels, respectively. Cardiac output will primarily be assessed by doppler echocardiography.

Study Design

Control: Active Control, Endpoint Classification: Efficacy Study, Intervention Model: Crossover Assignment, Masking: Open Label, Primary Purpose: Basic Science

Conditions

Type 2 Diabetes Mellitus

Intervention

Actrapid (human insulin)

Location

Department M (Endocrinology and Diabetes), Aarhus University Hospital
Aarhus
Denmark
8000

Status

Enrolling by invitation

Source

University of Aarhus

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:31:35-0400

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Medical and Biotech [MESH] Definitions

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.

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 51-amino acid pancreatic hormone that plays a major role in the regulation of glucose metabolism, directly by suppressing endogenous glucose production (GLYCOGENOLYSIS; GLUCONEOGENESIS) and indirectly by suppressing GLUCAGON secretion and LIPOLYSIS. Native insulin is a globular protein comprised of a zinc-coordinated hexamer. Each insulin monomer containing two chains, A (21 residues) and B (30 residues), linked by two disulfide bonds. Insulin is used as a drug to control insulin-dependent diabetes mellitus (DIABETES MELLITUS, TYPE 1).

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 strain of Rattus norvegicus which is a model for spontaneous insulin-dependent diabetes mellitus (DIABETES MELLITUS, INSULIN-DEPENDENT).

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