Endocrine Abstracts

Background and aim: Aryl hydrocarbon receptor-interacting protein (AIP) is evolutionary conserved and widely distributed throughout organism. Broad interest for AIP comes from involvement of loss-of-function AIP mutations in pituitary adenoma pathogenesis. The role of AIP in normal pituitary function is largely unknown. AIP is co-localized with GH in somatotroph secretory vesicles. Serum AIP protein was proteomically identified. We aimed at investigating whether AIP and GH are...

Previous studies demonstrated that n-3 polyunsaturated fatty acids (PUFA) reduce insulin resistance and non-alcoholic fatty liver disease (NAFLD). However, we previously reported that transgenic expression of the fat-1 n-3 desaturase, inducing the endogenous production of n-3 PUFA, improved insulin resistance but not hepatic steatosis in a mouse model of obesity. Thus, we compared the effects of increasing n-3 PUFA levels through oral or endogenous approaches in diet-...

Apart from the crucial effects of vitamin D on bone health, vitamin D deficiency has been associated with various chronic conditions such as metabolic or reproductive disturbances. The polycystic ovary syndrome (PCOS) represents the most common endocrine disorder among women of reproductive age. Women affected by PCOS frequently suffer from oligo- or anovulation as well as from obesity and insulin resistance. There is accumulating evidence showing an association of vitamin D s...

Primary generalized glucocorticoid resistance is characterized by glucocorticoid excess without any Cushing syndrome. Patients exhibit variable clinical presentation including arterial hypertension, hirsutism or adrenal hyperplasia. Although glucocorticoid resistance has been associated with glucocorticoid receptor (GR) mutations (encoded by NR3C1 gene), only 23 mutations have been reported so far. We have conducted a French National Research Program, referred to as M...

Introduction: Pegvisomant (PEGV) is approved for the treatment of acromegaly since 2003. This is the second interim analysis of data from ACROSTUDY, with the majority of patients treated for at least five years (yrs).Methods/design: ACROSTUDY is an international, open-label, prospective, non-interventional, post-marketing surveillance study monitoring the long-term safety and efficacy of PEGV. Patients were enrolled in the study on an ongoing basis.<...

Background and aims: Insulin therapy and the use of clinical decision support systems to achieve glycaemic control in hospitalized patients with hyperglycaemia are recommended by clinical guidelines. The aim of this evaluation was to assess time in target by continuous glucose monitoring (CGM) achieved by a basal-bolus insulin algorithm using insulin glargine U300 during hospital stay in patients with type 2 diabetes (T2D).Material and methods: 30 patien...

Background: Altered hepatic mitochondrial activity plays a key role in the development of non-alcoholic fatty liver disease (NAFLD). GH has been shown to stimulate mitochondrial function in skeletal muscle. Therefore we hypothesize that the time course of serum GH concentrations during an oral glucose tolerance test might be related to hepatic mitochondrial energy metabolism in vivo in humans.Methods: 15 volunteers (male/female: 7/8; 55±8 y...

Recently, somatic, heterozygous mutations in the gene encoding the deubiquitinase USP8 have been identified in 30–60% of corticotroph tumors. These mutations were found to hinder binding of 14-3-3 proteins, increasing its deubiquitinating activity. One substrate is Epidermal Growth Factor Receptor (EGFR), USP8 triggering EGFR recycling and increased EGFR signaling. However, tumors harboring mutations in USP8 are smaller than WT tumors, raising the debate if EGFR, as a pot...

Introduction: The prevalence of transsexuality in Europe is uncertain in absence of epidemiological studies, so it’s difficult to implement public healthcare strategies.Aim: To describe healthcare demand evolution in a gender identity clinical service in our country.Methods: Our center is a public university hospital placed in Valencia (Spain). It is a reference center on gender dysphoria from two provinces (Valencia and Caste...

Introduction: Obesity is associated with hypothalamic inflammation (HI) in animal models. While MRI studies in humans also found an increased intensity in the MBH in obese subjects, it remains unclear (1) if HI causes neuronal death and (2) if HI reverses during weight loss.Patients and methods: n=50 obese subjects and n=50 age- and sex-matched controls where examined. MRI scans including spectroscopy were performed. Also, detailed nutr...