Endocrine Abstracts

Introduction: Phthalates are suspected to influence thyroid function in epidemiologic and experimental animal studies. The aim of the study was to investigate the ability of primary human thyroid cell cultures to metabolise phthalates and a possible concentration-dependent response of phthalates on thyroglobulin (Tg) secretion.Methods: Human thyrocytes obtained from thyroidectomies were cultured to confluent monolayers. These were exposed to DEHP in conc...

A GH peak of 3 μg/l during the insulin tolerance test (ITT) is considered the gold standard for identifying adults with severe GH deficiency. Alternative stimuli such as arginine (AST) and glucagon (GST) are also employed but produce lower GH peaks than the ITT in normal subjects. Despite this, 3 μg/l is used as the diagnostic threshold for these tests, raising the possibility that severe GH deficiency is being diagnosed inappropriately.We stud...

Background: Pheochromocytomas and catecholamine-secreting paragangliomas (PPGL) are rare catecholamine-producing tumors. Due to the rarity, limited data on prognosis exists and data are mainly from tertiary centers with potential referral bias. Here, we present population-based mortality data over an observation period of 40 years.Materials and methods: We identified a cohort of 198 PPGL patients diagnosed 1 January 1977 to 31 December 2016 in North and ...

Introduction: Some methodologists have raised concern about the validity of the standard method of assessing patient-reported outcomes, i.e. retrospective questionnaires. Repeated momentary measurements have been introduced to avoid recall bias and provide ecological validity. Although having theoretical advantages, the measurement properties remain unsubstantiated. This study examines the relationship between the retrospective thyroid-related quality of life patient-reported ...

Head and neck paragangliomas (HNPGLs) are a type of neuroendocrine tumour. They arise from the sympathetic ganglia and can be either sporadic or due to hereditary syndromes (up to 40%). Most HNPGLs do not produce significant amounts of catecholamines1. Often, HNPGLs are detected in late stages due to compression or infiltration of cranial structures1. We report a case of a paraganglioma of the basis cranii due to somatic variants of SDHB (succinate dehydr...

ContextActive acromegaly is associated with impaired glucose metabolism, which improves upon treatment. Treatment options include surgery, medical therapy with somatostatin analogues (SSA) and Pegvisomant (PEG) and in few cases irradiation.ObjectiveTo describe the differential effect of various treatment regimens on the secretion of glucose, insulin, glucagon, glucagon-like peptide-1 (GLP1), and glucose-depen...

Background: Thyroid autoimmunity is the most prevalent autoimmune disorder among women of reproductive age and has been linked to pregnancy loss. In recurrent pregnancy loss (RPL), couples suffer several consecutive losses resulting in physical as well as psychological strains. Thyroid autoimmunity has been suggested as a risk factor in RPL, but most studies have focused on thyroid peroxidase antibodies (TPOAbs), not taking into account the presence of thyroglobulin antibodies...

Background and Aim: Ongoing anabolic androgenic steroids (AAS) use has been linked with left ventricle dysfunction, while information on the effects years after discontinuation is limited. Furthermore, the underlying mechanism behind the impaired cardiac function is unknown. Early signs of cardiomyopathy, such as microvascular dysfunction with global or regional reduced myocardial perfusion can be measured noninvasively by cardiac positron emission tomography (PET) with Rubidi...

Background and Objective: Information on the long-term effects of anabolic androgenic steroids (AAS) use on the myocellular properties of human skeletal muscle is scarce, despite being the primary target of AAS. Animal studies suggest persistence of upregulated myonuclei numbers following AAS discontinuation. Few human studies have investigated the effects of AAS on human skeletal muscle cell morphology and exclusively focused on current AAS users. No data exist elucidating th...

Objective: The use of anabolic, androgenic steroids (AAS) to increase muscle mass and strength has become widespread among younger men engaged in recreational strength training. Although, repercussions exist for elite athletes with a ban of two to four years, the long-term effects on muscle mass following cessation are currently unknown. The present study aims to investigate previous users’ ability to retain lean mass and strength after long-term AAS cessation.<p clas...