Endocrine Abstracts

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The Management of both type 1 diabetes (T1DM) and type 2 diabetes (T2DM) involves careful monitoring and treatment of hypertension, hyperlipidaemia and hyperglycaemia. Aggressive treatment of high blood pressure and high cholesterol has been proven effective in reducing mortality in both T1DM and T2DM. Various guidelines advocate certain values for blood pressure and for cholesterol to be aimed for. These cut-off values have been pushed downwards constantly during the last 3 d...

Background: Several studies have documented an altered body composition in Turner syndrome (TS), a model of premature ovarian failure. Body fat is increased and muscle mass is decreased. The ovarian failure necessitates substitution with female hormone replacement therapy (HRT) for a number of years, and HRT induces favourable changes in body composition with a decrease in body fat and an increase in fat free mass. It is unknown how HRT affects protein metabolism.<p class=...

Introduction: The clinical significance of the impact of GH on glucose homeostasis in adults with GH deficiency (GHD) remains unclear. We report the impact of 4 years of continuous GH therapy on HbA1c and progression to diabetes.Methods: Data were analysed from patients with adult-onset GHD (>20 years old) enrolled in NordiNet® International Outcome Study (IOS) (NCT00960128), an observational study, and treated with GH (Norditropin<su...

Glucagon-like peptide-1 (GLP-1) is an incretine hormone with multiple actions besides control of glucose homeostasis. GLP-1 is known to cause natriuresis in humans but the effects on basic renal physiology are still partly unknown.This study therefore aimed to demonstrate the effects of GLP-1 on kidney hemodynamics, electrolyte handling, and the renin–angiotensin–aldosterone system in healthy men.Twelve healthy young male...

Introduction: Type 1 diabetes (T1D) is characterized by primary insulin insufficiency and secondary disruption of GH–IGF–IGFBP axis. S.c. insulin therapy is necessary to normalize this axis. This study aimed to investigate whether the distinct insulin profiles obtained with insulin aspart and human insulin preparations, respectively, affect IGF1 concentration and bioactivity and IGFBP levels differently.Methods: In a randomized, four-period cro...

Objective: PWS is associated with hypogonadism and partial GH insufficiency. In addition partial insufficiency of the hypothalamic–pituitary–adrenal (HPA) axis recently was suggested (de Lind van Wijngaarden 2008) based upon an insufficient response to an overnight single-dose metyrapone in 15 out of 25 (60%) children. We aimed at further exploring this potentially dangerous condition.Methods: During a 1-year period genetically verified PWS pat...

Background: The impact of GH on insulin sensitivity is ambiguous since both long standing GH-deficiency as well as acute GH exposure and prolonged GH-excess are associated with insulin resistance.Aim: To test the hypotheses that the insulin antagonistic effect of GH i) is dynamic and depend on ambient GH levels and ii) subsides gradually with time after GH exposure.Methods: Eight GHDA participated in a randomised crossover study. E...

Introduction: We questioned the justification of general recommendations for assessment of hypopituitarism in patients with traumatic brain injury (TBI), and aimed to describe the prevalence of hypopituitarism in a national TBI population of patients admitted to a Danish hospital in 2008, as compared to healthy controls.Patients and methods: We included 463 patients (18–65 years) hospitalized ≥24 h, with more than subtle TBI as indicated by lo...

Background: Serum IGFI measurements are used during GH replacement in GHDA for titration of the GH dose, to monitor compliance and to avoid overdosing, but it is uncertain if pretreatment IGFI is a determinant of the GH dose or the response to GH treatment.Methods: Data from the NordiNet IOS have been analyzed to determine pretreatment serum IGFI concentrations in GHDA and to analyze if they influence the GH starting dose and/or the therapeutic response ...