GLUCAGON-LIKE PEPTIDE-1 AFFECTS TASTE PERCEPTION DIFFERENTLY IN WOMEN: A RANDOMIZED, PLACEBO-CONTROLLED CROSSOVER STUDY.

Gastrointestinal tract is an important connector between food intake and body weight, it senses basic tastes in a similar manner as the tongue. The aim of the study was to find out how gut hormone glucagon-like peptide-1 (GLP-1) influences taste preference. Fourteen healthy participants (six male and eight female) were included in this double-blind, placebo-controlled crossover study. After overnight fast and salty fluid (oral sodium load), participants were randomized to receive placebo (500 mL of 0.9% saline) or GLP-1 infusion (1.5 pmol/kg/min) over a 3-hour period. At the end of infusion, participants chose food preferences from illustrations of food types representing 5 tastes. After 7 days, the protocol was repeated, this time those that had received placebo first got GLP-1 infusion, and those having received GLP-1 first got placebo. Change of taste preference after GLP-1 infusion but not after placebo was reported as response, and non-response was reported in case of taste persistence. A statistically significant difference in response type was found between genders, with women being more likely to change their taste preference after GLP-1 than men. The change of taste upon GLP-1 infusion observed in women might be ascribed to estrogen weight-lowering effects accomplished by receptor-mediated delivery.

Glucagon-Like Peptide-1 Infusion Suppresses Aldosterone Levels in Healthy Normal-Weight Individuals: Double-Blind, Placebo-Controlled Crossover Study.

INTRODUCTION: Glucagon-like peptide-1 (GLP-1) has many effects on the human body, but its glucose-lowering effect through its stimulation of insulin secretion is the most significant. GLP-1 also acts on renal function and hemodynamics. The antihypertensive and renoprotective effects of GLP-1 receptor agonists are partly explained by their vasoactive effect and increased natriuresis, but their positive influences on blood pressure and the development and progression of kidney disease are attributed to many effects beyond glycemic control. The aim of this study was to determine how the native gut hormone GLP-1 influences the renin-angiotensin-aldosterone system (RAAS). METHODS: Fourteen healthy participants (6 males and 8 females) were included in a double-blind, placebo-controlled crossover study. After overnight fasting and oral sodium loading, participants were randomly assigned to receive either placebo (500 ml of 0.9% saline) or GLP-1 infusion (1.5 pmol/kg/min dissolved in 500 ml of 0.9% saline) over a 3-h period. After 3 and 6 h, the following parameters were measured: glucose, insulin, plasma renin activity, aldosterone, GLP-1, and antidiuretic hormone. After 7 days, the protocol was repeated, except that those who had previously received placebo now received GLP-1 infusion, and those who had previously received GLP-1 now received placebo. RESULTS: Three hours after GLP-1 infusion, aldosterone had decreased by a statistically significant amount (p < 0.008) compared to the baseline level. CONCLUSION: The present study showed that native GLP-1 can decrease aldosterone secretion in a group of healthy individuals, supporting the idea of beneficial outcomes of GLP-1-activating agents on blood pressure and the RAAS. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT02130778.

Type 1 diabetes from adolescence to adulthood: is there a permanent need for nutrition education and re-education?

BACKGROUND: The transition for type 1 diabetes patients from pediatric to adult diabetology care is challenging process for both medical team and patients. Adult diabetology usually insists on stricter goals and focuses on increased empowerment and self-care. We set to find a more practical and effective way to determine patient knowledge and skills during the transition. The aim of the study was to identify screening questions which best represent knowledge in management of type 1 diabetes and to explore the differences in the effect of a structured educational program for type 1 diabetes patient diagnosed in childhood versus adulthood. METHODS: It was an observational study exploring effect of a structured educational program for 39 participants diagnosed with type 1 diabetes in childhood (group 1) vs. 20 patients diagnosed in adulthood (group 2). Main outcome measures were A1C and knowledge questionnaire results change before and after education. RESULTS: The effect of education was equal in both groups, with higher basal level of knowledge in group 1. There was a significant correlation between questions regarding carbohydrate counting and A1C after 3 and 6-12 months in group 1. We found that questions regarding carbohydrate counting may predict glycemic control and represent general knowledge. CONCLUSIONS: Carbohydrate counting is crucial in predicting glycemic control and representing general knowledge about diabetes. Patients diagnosed in childhood may be more knowledgeable in diabetes management, but their practical skill in matching insulin dose and carbohydrate content is poor. Both groups improved their knowledge in similar proportion with same educational program.

[Management of adrenal incidentaloma: the position statement of the Croatian referral center for adrenal gland disorders]. / Dijagnostika i lijecenje incidentaloma nadbubrezne zlijezde: preporuke referentnog centra ministarstva zdravstva za bolesti nadbubrezne zlijezde.

Adrenal incidentalomas are tumours of adrenal glands discovered during diagnostic workup for other clinical condition unrelated to adrenal glands. Improvement in imaging techniques and their widespread use in everyday practice have increased detection of adrenal incidentalomas making their management one of the most important challenges of modern endocrinology. Based on the relevant medical literature and guidelines of other international societies a panel of Croatian leading experts in adrenal gland disorders provide practical recommendations for the diagnostics and treatment of adrenal incidentaloma.