Endocrine Abstracts

Introduction: Neuroendocrine Tumors of the Colon are often aggressive and metastatic at diagnosis. The diagnosis is histologicaly obtained through immunohistochemical evaluation of biopsy specimens/metastases, with positive staining for Chromogranin A and Synaptophysin.Case Report: A 54-year-old independent patient with Type 1 Diabetes, leading to diabetic nephropathy, underwent a renal transplant followed by graft failure and is currently on hemodialysi...

Introduction: Primary Bilateral Macronodular Adrenal Hyperplasia (PBMAH) represents <2% of all causes of Cushing’s Syndrome (CS). Clinical course is insidious, with adrenal bilateral macronodules and gradual cortisol excess, only rarely presenting with overt CS. The pathophysiology remains unclear in most cases; however, pathogenic variants in the onco-supressor ARMC5 gene are described in 25-50% of PBMAH and may confer a more severe clinical course. <p class="abs...

Trabecular bone score (TBS) is a recent noninvasive analytical method, based upon DXA images, related to bone microarchitecture or bone quality; together, TBS and DXA may evidence bone strength. Falls and osteoporotic fractures increase with ageing, while both BMD and vitamin D levels slowly decline. Data about the influence of vitamin D on the TBS are scarce.Aim: To evaluate the influence of the blood vitamin D levels on the TBS in normal men.<p cla...

Increased recognition of the morbidity and mortality due to osteoporosis in men are main issues of public health. Ageing and the propensity to falls are the main risk factors for osteoporotic fractures in men; moreover, hypogonadism is an important secondary cause of low bone mineral density (BMD), but very little is known about the effect of hypogonadism treatment on the BMD.Objective: The aim was to study the impact on BMD of the treatment of male hypo...

Introduction: Obesity is a pathological condition characterized by a low-grade systemic inflammatory state that predisposes to the onset of some diseases, such as hypertension, diabetes, and hyperlipidemia. Also, obesity can impact bone metabolism, but its effects are controversial.Aims: This observational study aimed to evaluate and correlate the bone mass with the lipidic profile, adipocytokines, glucose metabolism, hepatic function and purine metaboli...

Introduction: Osteoporosis is a common metabolic bone disease characterized by reduced bone mass and increased risk of fragility fractures. The pathogenesis of this disease is complex and influenced by multiple risk factors, where genetic factors play an important role. Menopause predisposes women to osteoporosis due to declining estrogen levels. Osteoporosis and iron metabolism have an important relationship. Iron overload suppresses osteoblast formation and stimulate osteocl...

Introduction: Primary Bilateral Macronodular Adrenal Hyperplasia (PBMAH) represents <2% of causes of Cushing’s Syndrome (CS). Clinical course is insidious, with adrenal bilateral macronodules and gradual cortisol excess, only rarely presenting with overt CS. The pathophysiology remains unclear, however, hyperactivation of the cAMP/PKA pathway, in 77-87% of cases through aberrantly expressed G-protein coupled receptors (GPCRs), has been described. Despite being a benig...

Neuroendocrine neoplasia (NENs) are rare tumours that show features of neuroendocrine differentiation. Generally, NENs can be subdivides into high-grade neuroendocrine carcinomas (NECs) and low-to-intermediate grade neuroendocrine tumours (NETs). The most common Endodermal NETs’ localisations are the lungs, ileum, appendix, and rectum. Neuroectodermal NETs include medullary thyroid cancer (MTC), pheochromocytoma (PHEO), and paraganglioma (PGL). Nets are estimated to occur...

Low plasma sex hormone-binding globulin (SHBG) levels are present in patients suffering chronic metabolic diseases, including non-alcoholic fatty liver disease (NAFLD). However, whether altered SHBG production plays a role in development and progression of this disease is unclear. To investigate SHBG involvement in NAFLD, we studied the effects of overexpressing SHBG in two mouse models, a genetically-induced model, by developing a double transgenic mouse by crossing the human...

Aims: To study the association of protein tyrosine phosphatase (LMW–PTP/ACP1) polymorphism with bone mineral density and metabolic parameters of bone remodelling.Methods: BMD (g/cm2) was measured by DEXA in 760 subjects: 448 normal BMD (359F/89M; 49.7±12.9 years; 30.2±5.4 kg/m2) and 312 osteoporosis (265F/47M; 63.9±10.4 years; 27.16±4.4 kg/m2). Metabolic bone remodelling parameters were analyzed: ...