Endocrine Abstracts

Context: Hyponatremia due to the syndrome of inappropriate antidiuretic hormone secretion (SIADH) is a very common condition in hospitalized patients. It is crucial to establish the cause of SIADH especially in order to exclude or detect an underlying malignancy. As SIADH can be caused by paraneoplastically produced arginine vasopressin (AVP), we hypothesized that its stable surrogate marker copeptin may be used as a diagnostic tool.Methods: We analyzed ...

Background: The goal of this project was to identify non-osmotic stimuli of arginine vasopressin (AVP) release during exercise. Non-osmotic AVP release can lead to severe hyponatremia in otherwise healthy marathon runners.Interleukin-1 (IL-1) increases during exercise and was shown to induce AVP in animal models. We here therefore investigated whether copeptin (a surrogate marker for AVP) increases upon exercise in young and healthy males, and whether this increase is regulate...

Background: Studies in rodents and non-human primates revealed beneficial effects of oxytocin on systemic metabolism, body weight and food intake. Several rodent studies demonstrated that olfactory stimulation with D-limonene, improves systemic glycemia, reduces food intake and body weight, while olfactory stimulation with the scent of lavender oil had opposite effects. The aim of this study was to investigate if systemic oxytocin levels are affected upon olfactory stimulation...

The co-secretion of GHRH and GH has been described previously in a patient with GHRH producing pituitary somatotroph adenoma. Here we present a patient with MEN1 and ectopic secretion of both GHRH and GH from a neuroendocrine lung tumor.A 52-year-old woman was diagnosed in 2009 with two lung tumors, 4 cm right upper lobe tumor, and 2 cm left lower lobe tumor. Owing to a mild coarsening of facial features, acromegaly was suspected. Endocrine studies showe...

BackgroundPolycystic Ovary Syndrome (PCOS) is the most prevalent endocrine disorder in women of reproductive age. The main components are hyperandrogenemia and oligo-/amenorrhea. The pathophysiology of PCOS is not fully understood which is why no causal treatment options are available. A multitude of observational studies demonstrated elevated C-reactive protein (CRP) levels in patients with PCOS compared with weight-matched controls. CRP is a sensitive ...

Background: The differential diagnosis of diabetes insipidus is challenging. The most reliable diagnostic approach is hypertonic saline-stimulated copeptin measurements. However, as this test is based on the induction of hypernatremia, it is associated with adverse effects and needs close sodium monitoring. We hypothesized that arginine-stimulated copeptin measurements provide an alternative, simple and safe diagnostic test for diabetes insipidus.Methods...