Endocrine Abstracts

Introduction: Benzo[a]Pyrene (BaP) is an endocrine-disrupting chemical, which may impact reproduction. It is a polycyclic aromatic hydrocarbon generated by the incomplete combustion of organic compounds. BaP may be accumulated in the environment, achieving effective concentrations in the nanomolar range and exerting genotoxic effects in long-term exposed humans.Aim: We evaluated the short-term impact of BaP on luteinizing-hormone (LH)/choriogonadotropin ...

Follicle stimulating hormone (FSH) is produced by the anterior pituitary gland and it is a key hormone in the reproductive system. FSH is a heterodimeric glycoprotein composed with two extensively glycosylated protein sobunits (α and β) N-glycosylated in two positions (Asn52 and Asn78 in the FSHα subunit and Asn7 and Asn24 in the FSHβ subunit) giving rise to numerous isoforms of FSH. Glycosylation has been shown t...

Introduction: With the increased use of imaging modalities, detection of Adrenal Incidentaloma (AI) has become common.Aim: We evaluated management of patients with AI to improve service delivery.Method: Patients with AI referred to our endocrinology outpatient service (2006–2019). Data was collected from electronic case records and radiology reporting system. Demography, biochemical investigations, time interval between two sc...

Background/objective: mETE has shown no effect on survival, and the 8th edition of the AJCC classification no longer considers mETE in the pT3 definition. Therefore, tumors with mETE below 40 mm are now staged pT1/pT2. However, controversy remains regarding mETE impact on disease recurrence. This study assessed the risk of recurrence of PTC patients previously classified as pT3 because of mETE, compared to PTC patients staged pT1-pT2.Methods: Monocentric...

Successful minimally invasive parathyroidectomy for primary hyperparathyroidism depends on accuracy of pre-operative localisation studies. Ultrasound (US) and sestimibi (SM) scanning remain the imaging modalities of choice reserving MRI, CT and PET for patients who have not been cured by previous explorations or for whom other localization techniques are uninformative or discordant. The aim of this study was to review the accuracy of US and SM in the pre-operative localisation...

Introduction: Genetic of pituitary tumors (PT) is incompletely understood. The aim of this study was to search for somatic copy number variations (CNV) in pituitary tumors and evaluate their prognostic impact on tumor recurrence.Methods: CGH array analysis (Agilent SurePrint G3 Human CGH+SNP Microarray 4×180 K) was performed on 196 fresh-frozen PT (67 gonadotroph, 31 corticotroph, 38 prolactinomas, 60 somatotroph). PT were classified according to th...

Introduction: Follicle-stimulating hormone (FSH) is a glycoprotein that support reproduction by regulating ovarian follicular growth and development. Recent studies demonstrated that proliferative signals mediating folliculogenesis are mediated by the G protein-coupled estrogen receptor (GPER) expressed in ovarian tissues throughout the follicular phase. In granulosa cells, GPER forms heteromers with FSHR, reprogramming cAMP-induced death signals to AKT-dependent, anti-apoptot...

Introduction: Type 5 phosphodiesterase (PDE5) inhibitors (PDE5i) lead to intracellular cyclic-guanosine monophosphate (cGMP) increase and are used for clinical treatment of erectile dysfunction. Studies found that cGMP may up/downregulate the growth of certain endocrine tumor cells, suggesting that the use of PDE5i could impact the risk of certain tumors, such as colorectal cancer.Aim: We evaluated if PDE5i may impact thyroid cancer cell growth in vi...

Introduction: Despite normal thyroid stimulating hormone (TSH) serum levels, 10% of hypothyroid patients treated with LT4 complain of hypothyroidism symptoms, likely linked to decreased availability of free triiodothyronine (fT3). Thus, combined levothyroxine/liothyronine (LT4/lT3) therapy was suggested to ensure a more physiological balance in peripheral tissues.Aim: To evaluate the effectiveness of combined LT4/lT3 therapy in thyroidectomized subjects,...

There is limited research into the impact of active brown adipose tissue (aBAT) in patients with phaeochromocytomas and paragangliomas (PPGLs). A small body of evidence has shown that patients with PPGL patients can exhibit a high prevalence for aBAT recognized as ranging between 8 - 28% without specific correlation to germline mutations. Furthermore, it has been suggested that aBAT may be linked to increased mortality. Systematic searches of the Medical Literature Analysis an...