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Dapagliflozin in Physical Exercise in Type 1 Diabetes

2019-08-13 18:05:44 | BioPortfolio

Summary

Inhibitors of sodium-dependent glucose-transporter 2 (SGLT-2 inhibitors, including dapagliflozin) inhibit glucose reabsorption in renal tubular cells, hereby increasing glycosuria in the hyperglycemic state. Its mechanisms of action are independent of insulin, which makes SGLT-2 inhibitors a potential adjunct to insulin in type 1 diabetes mellitus (T1DM).

However, a higher risk for diabetic ketoacidosis (DKA) was reported in patients with T1DM taking SGLT-2 inhibitors. DKA depends on an accumulation of ketone bodies in the blood stream, which equals an accumulation of acids that lead to acidosis. The underlying mechanisms of this observation are unknown. Ketone body production depends on the molar ratio of glucagon to insulin, with insulin suppressing but glucagon stimulating ketone body production. This translates into higher production during relative insulin deficiency, carbohydrate deficiency, and prolonged fasting, which occurs during sickness but also physical exercise. Physical exercise is a recommended cornerstone in the treatment of T1DM and current treatment guidelines recommend both, reductions of insulin doses and ingestion of additional carbohydrates to avoid hypoglycemic events. These adaptions might increase relative insulin deficiency, hyperglycemia and glycaemic variability, which might in turn promote ketone body production. The addition of SGLT-2 inhibitors further may promote ketogenesis even though there are reports of SGLT-2 inhibitors increase Glucagon-like-peptide-1 (GLP-1) in patients with T1DM. GLP-1 is a suppressor of glucagon secretion. In summary, knowledge about the effects of SGLT-2 inhibition on ketone body production is scarce, especially during exercise in patients with T1DM.

The study seeks to illustrate the effect of SGLT-2 inhibition on glycemic variability and ketone body production during and after recreational exercise in patients with T1DM. The results of study 2 will provide the basis for future studies investigating the underlying mechanisms of potentially modified ketone body production during and after exercise under SGLT-2 inhibition.

Study Design

Conditions

Diabetes Mellitus, Type 1

Intervention

Forxiga 10mg followed by placebo OR reverse

Location

Department of Diabetes, Endocrinology, Nutritional Medicine and Metabolism, Inselspital, Bern University Hospital, University of
Bern
Switzerland
3010

Status

Not yet recruiting

Source

University Hospital Inselspital, Berne

Results (where available)

View Results

Links

Published on BioPortfolio: 2019-08-13T18:05:44-0400

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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.

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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