Endocrine Abstracts

Introduction: The clinical relevance of low IGF-I levels, caused by cranial radiotherapy, in adult childhood cancer survivors has not been studied extensively. We evaluated whether IGF-I is a useful marker for altered body composition and growth hormone deficiency in this group.Methods: We analyzed retrospective data from 610 adult childhood cancer survivors, retrieved from the late effects clinic. Median age at diagnosis was 6 years (interquartile range...

Introduction: Obesity, represented by high body mass index (BMI), is a major complication after treatment for childhood cancer. High amount of total and visceral fat and low lean body mass are described as more reliable determinants, predicting the development of cardiovascular disease. In this study longitudinal changes of BMI and body composition in adult childhood cancer survivors were evaluated.Methods: Data of 417 adult childhood cancer survivors, w...

Context: In untreated acromegalic patients, decreased cognitive functioning is reported to be associated with the degree of GH and IGF1 excess. Whether previous GH excess or current medical treatment for acromegaly specifically affects cognition remains unclear.Objective: To compare cognitive functioning in patients who are treated for acromegaly and non-functioning pituitary adenomas (NFA). In addition, we assessed the influence of prolonged medical tre...

Objective: The current study aims to describe sexual desire in female-to-male transsexuals post SRS (sex reassignment surgery) using a validated questionnaire. The association between serum androgen levels and the intensity and frequency of sexual desire are examined. The data are compared to those of male-to-female transsexual persons.Design: Cross sectional study.Methods: Female-to-male transsexual persons, post SRS, (n=48...

Background: Amiodarone is frequently associated with thyroid dysfunction. Identifying predictors for amiodarone-associated thyroid dysfunction and assessing treatment outcome may aid clinicians in daily practice.Patients and methods: In our retrospective study, we included 303 consecutive patients with amiodarone therapy for cardiac arrhythmias (260 with atrial fibrillation and 43 with ventricular arrhythmias). Thyroid function tests were performed every...

Introduction: Vitamin D deficiency is very common in Northern Europe. Recently, we developed an equation to calculate the vitamin D deficit, based on the serum 25-OH vitamin D3 (25OHD3) level and body weight: vitamin D deficit (IU)=40×(75−serum 25OHD3)×body weight. The calculated deficit gives the amount of cholecalciferol that is required to raise the serum 25OHD3 level to the target of 75 nmol/l.<p class="abstex...

Introduction: Severe vitamin D deficiency is very common in northern Europe. It is not limited to the elderly, but occurs in a large variety of subjects. Colecalciferol dosing guidelines for rapid correction of vitamin D deficiency are not available.Objective: To assess the optimal Colecalciferol dose regimen, based on body weight, for rapid correction of vitamin D deficiency, in a variety of subjects.Materials and methods: One hun...

The growth hormone (GH) receptor is a key regulator of cellular metabolism. Using model cell systems we have investigated how GH-induced signaling is regulated, both in paracrine and autocrine conditions.Three features render GHR unique: (a) an active ubiquitination system is required for both endocytosis and degradation in lysosomes; (b) uptake of receptor is a continuous process, independent of GH binding and Jak2 signal transduction; (c) only cell sur...

Introduction: Cortistatin (CST) is a 17 amino-acid neuropeptide involved in sleep regulation. Due to its structural resemblance to somatostatin (SS), CST binds with high affinity to the 5 known SS receptors. CST also binds to the putative MrgX2 receptor. Previously we demonstrated that various types of human immune cells and tissues as well as lymphoid cell lines express CST mRNA. We suggested that CST plays a regulatory role in immune cell function both in physiological and p...

Background and aim: Adipose and muscle tissue dysfunction are associated with obesity-related complications, especially insulin resistance (IR) and inflammation, which improve after weight loss. The underlying mechanisms are however not yet fully understood. This study investigates changes in systemic and regional markers of IR and inflammation during weight loss in subjects with obesity.Materials and methods: Twenty subjects with obesity (age 49±10...