Active clinical trials for "Endocrine System Diseases"

With this study the investigators investigate the effects of amino acids (tryptophan in two different concentrations, leucin) and sugar alcohols (xylitol, erythritol) on satiety mechanisms.

The proposed randomized controlled trial will test the effect of a low-carbohydrate diet on hemoglobin A1c among individuals with elevated hemoglobin A1c that are within the range of prediabetes or diabetes. Results may provide evidence about the role of carbohydrate restriction in individuals with or at high risk of type 2 diabetes.

The purpose of this study is to compare the effectiveness of low dose human chorionic gonadotropin (HCG) in combination with clomiphen citrate to induce ovulation and its endocrine response in patients who had previously failed to ovulate on clomiphen citrate alone. The investigators will also compare the effectiveness and endocrine response of this approach with the regimen of adding HMG to clomiphen citrate.

With this study the investigators investigate the effects of amino acids (tryptophan, leucin) and sugar alcohols (xylitol, erythritol) on satiety mechanisms and brain activation.

The purpose of this study was to validate the growth hormone releasing hormone (GHRH) plus arginine (GHRH+arg) stimulation test and it´s cut-off limits for diagnosis of adult growth hormone deficiency using the growth hormone (GH) Immulite 2000 Xpi assay calibrated against the IS 98/574 from the World Health Organization. A specific aim was to study the effect of gender and age on the peak GH response in the GHRH+arg test

To assess the effects of AZD4901 when given in multiple doses to females with Polycystic Ovary Syndrome

The purpose of this study is to compare ways of giving advice and providing support to improve diet and physical activity in adult primary care patients with elevated body mass index and dysglycemia.

The overall objective of the study is to examine the changes within the gut microbiome after the supplementation of inulin and its effect on markers of mineral metabolism and bone turnover.

Growth hormone (GH) is essential for longitudinal bone growth and somatic development. These protein anabolic effects require sufficient nutritional supply. During fasting and caloric restriction GH predominantly promotes fat metabolism. GH counteracts the effect of insulin in many tissues, of which insulin-stimulated glucose uptake in skeletal muscle has been most extensively studied. Substrate competition between elevated free fatty acids and glucose is suggested as a mechanism, and this hypothesis can be tested mechanistically by means of acipimox, which is a nicotinic acid that suppresses the fat metabolizing effects of GH. The hypothesis is, that the suppressive effect of GH on insulin-stimulated glucose uptake in skeletal muscle is obviated by acipimox-induced inhibition of fat metabolism. In order to investigate this, eight adult hypopituitary patients with documented GH-deficiency will be studied in the presence and absence of GH and acipimox, respectively, and biopsies from skeletal muscle and subcutaneous adipose tissue will be analyzed. Knowledge of the effects of growth hormone and fat metabolism can in shot-sight as well as in long-sight have great importance for the understanding of growth disorders from overweight and type 2 diabetes to malnutrition and eating disorders.

The purpose of this study is to determine the reciprocal control between gastric functions and intestinal parameters in the development of satiation in obese people.