Searchable abstracts of presentations at key conferences in endocrinology

ea0037oc8.3 | Endocrine tumours | ECE2015

miR-372 is aberrantly expressed in most parathyroid tumours and might contribute to parathyroid tumourigenesis by inhibiting CDKN1A/p21 and LATS2

Verdelli Chiara , Forno Irene , Vaira Valentina , Guarnieri Vito , Scillitani Alfredo , Cetani Filomena , Vicentini Leonardo , Balza Gianni , Beretta Edoardo , Corbetta Sabrina

We previously described aberrant expression of microRNAs belonging to the chromosome 19 cluster (C19MC) and the close miR-371-373 cluster in two-thirds of parathyroid carcinomas (PCas). Therefore, we investigated the involvement of the miR-371-373 cluster in parathyroid tumours, where miR-372 was the most consistently upregulated. miR-372 is known to be highly expressed in human embryonic stem cells and definitely downregulated upon differentiation. Moreover, miR-372 promotes ...

ea0037gp.30.06 | Endocrine tumours and neoplasia – General | ECE2015

The Wnt/β-catenin pathway regulates the expression of early embryonic stem cell genes in human parathyroid tumours

Verdelli Chiara , Forno Irene , Vaira Valentina , Guarnieri Vito , Scillitani Alfredo , Cetani Filomena , Vicentini Leonardo , Balza Gianni , Beretta Edoardo , Corbetta Sabrina

Though there is no evidence of a constitutive nuclear accumulation of β-catenin, the Wnt/β-catenin pathway might be deregulated in parathyroid tumours. We investigated unphosphorylated active β-catenin distribution by western blot in 16 typical parathyroid adenomas (PAds): β-catenin accumulation in the nuclear protein fractions varied from the levels detected in Caco-2 cells with constitutively active Wnt signalling (three PAds) to the levels measured in HE...

ea0070aep16 | Adrenal and Cardiovascular Endocrinology | ECE2020

Effects of adrenalectomy on arterial hypertension in patients with adrenal subclinical hypercortisolism: Preliminary results of a randomized clinical trial

Morelli Valentina , Frigerio Sofia , Aresta Carmen , Passeri Elena , Pugliese Flavia , Corbetta Sabrina , Scillitani Alfredo , Arosio Maura , Chiodini Iacopo

Introduction: The management of patients with adrenal incidentaloma (AI) and possible subclinical hypercortisolism (SH) is debated. This randomized study was aimed to evaluate the effects of adrenalectomy on arterial hypertension (AH).Methods: We consecutively evaluated 590 AI patients (referred to 3 Italian Centres between 06/2016 and 12/2019). Among these, 134 patients showed a possible SH (i.e. 1 mg DST between 1.8 and 5 µg/dl). Based on the excl...

ea0016p16 | Adrenal | ECE2008

The role of midnight salivary cortisol levels in the diagnosis of subclinical hypercortisolism (SH) in patients with adrenal incidentaloma (AI)

Masserini Benedetta , Bergamaschi Silvia , Barbieri Annamaria , Salcuni Antonio , Morelli Valentina , Scillitani Alfredo , Beck-Peccoz Paolo , Chiodini Iacopo

Background: Several criteria (i.e., cortisol supprimibility after 1 mg overnight dexamethasone suppression test -F-dex-, low ACTH levels, high 24 h urinary free cortisol levels -UFC-, high midnight serum cortisol levels) have been used for defining SH. Nevertheless, a real gold standard combination of tests is lacking. Recently midnight salivary cortisol (MSC) has been described as a sensitive marker for the diagnosis of overt hypercortisolism, while the role of MSC in the dia...

ea0073aep9 | Adrenal and Cardiovascular Endocrinology | ECE2021

Effects of adrenalectomy on arterial hypertension, glucose and lipid metabolism in patients with mild autonomous cortisol secretion: preliminary results of a Randomized Clinical Trial

Frigerio Sofia , Morelli Valentina , Aresta Carmen , Elena Passeri4 , Pugliese Flavia , Corbetta Sabrina , Scillitani Alfredo , Arosio Maura , Chiodini Iacopo

IntroductionThe management of patients with adrenal incidentaloma (AI) and mild autonomous cortisol secretion (MACS) is debated. This randomized study aimed to evaluate the effects of adrenalectomy on arterial hypertension (AH), glucose and lipid metabolism.MethodsWe consecutively evaluated 626 AI patients (referred to 3 Italian Centers between 06/2016 and 02/2020). According to the inclusion criteria, we enr...

ea0073aep21 | Adrenal and Cardiovascular Endocrinology | ECE2021

Metabolic and Inflammation markers in patients with mild autonomous cortisol secretion: preliminary results of a Randomized Clinical Trial

Morelli Valentina , Frigerio Sofia , Perego Silvia , Lombardi Giovanni , Aresta Carmen , Pugliese Flavia , Scillitani Alfredo , Arosio Maura , Corbetta Sabrina , Chiodini Iacopo

IntroductionIrisin is a molecule secreted from skeletal muscle and contributes to maintenance of metabolic homeostasis leading to increased energy expenditure and reducing the risk of obesity and diabetes. Literature data suggest that patients with Cushing disease have lower irisin values than controls and remission of hypercortisolism increases these values. Moreover, other plasma inflammation markers implicated in the pathogenesis of atherosclerosis, i...

ea0041gp115 | Endocrine Tumours | ECE2016

Loss of cells expressing the T-box transcription factor TBX1 might be associated with a quiescent phenotype in parathyroid tumours

Verdelli Chiara , Avagliano Laura , Ferrero Stefano , Guarnieri Vito , Cetani Filomena , Vicentini Leonardo , Beretta Edoardo , Scillitani Alfredo , Bulfamante Gaetano , Vaira Valentina , Corbetta Sabrina

Embryonic transcription factors have been involved in tumourigenesis. The transcription factor TBX1 regulates the embryonic parathyroid cells fate. Indeed, it has never been investigated in human adult parathyroids. Here, expression, function and regulation of the TBX1 gene were analyzed in adult normal and tumour parathyroid tissues. Immunohistochemistry identified 30–70% (mean±S.E.M, 52.0±7.3%) of cells expressing TBX1 at nuclear levels...

ea0041gp118 | Endocrine Tumours | ECE2016

Expression and regulation of the early embryonic stem cell genes in parathyroid tumours

Verdelli Chiara , Forno Irene , Ferrero Stefano , Guarnieri Vito , Scillitani Alfredo , Cetani Filomena , Vicentini Leonardo , Balza Gianni , Beretta Edoardo , Creo Pasquale , Vaira Valentina , Corbetta Sabrina

An embryonic gene signature has been suggested in parathyroid tumours. We investigated the expression of early embryonic stem cell (ESC) genes in parathyroid tumours. POU5F1/OCT4, SOX2 and NANOG transcripts were detected in almost all parathyroid adenomas (PAds; n=22) and atypical PAds (n=3), besides the variable expression of ESC genes KLF4, EGR1, and REX1/ZFP42. OCT4, SOX2 and NANOG proteins expression w...

ea0032p513 | Endocrine tumours and neoplasia | ECE2013

The embryonic transcription factor TBX1 is expressed in adult parathyroid cells and might be involved in parathyroid tumorigenesis

Verdelli Chiara , Varia Valentina , Meregalli Mirella , Terranegra Annalisa , Guarnieri Vito , Scillitani Alfredo , Passeri Elena , Vocentini Leonardo , Ferrero Stefano , Spada Anna , Corbetta Sabrina

Cancer cells and embryonic stem cells share many key biological properties and have common genetic signature: transcription factors regulating self-renewal and differentiation have been found expressed in human cancer cells. We focused our attention on TBX1, the gene involved in 22q11.2 microdeletion/DiGeorge syndrome, which is involved in heart, thymic and parathyroid cells differentiation.Real-time PCR, western blot and immunohistochemistry de...