Searchable abstracts of presentations at key conferences in endocrinology

ea0090p330 | Diabetes, Obesity, Metabolism and Nutrition | ECE2023

Cabergoline counteracts adipose and skeletal muscle lipid accumulation through promoting oxidative pathway: an in vivo and in vitro preclinical study

Negri Mariarosaria , Pivonello Claudia , Amatrudo Feliciana , Patalano Roberta , Monto Tatiana , Paola Provvisiero Donatella , Simeoli Chiara , de Angelis Cristina , Simona Auriemma Renata , Colao Annamaria , Crescenzo Raffaella , Pivonello Rosario

Obesity, characterized by an abnormal body fat accumulation mainly caused by a chronic imbalance between energy intake and expenditure, is a massive public health problem. Targeting excessive fat deposition in adipose tissue and ectopic fat accumulation in skeletal muscle through promoting lipid oxidation pathway may represent a promising strategy to counteract obesity. This study aims at investigating the effects of cabergoline (CAB), a dopamine agonist, on adipose and skelet...

ea0090p145 | Pituitary and Neuroendocrinology | ECE2023

Somatostatin receptor type 2 (SSTR2) expression regulation by miR-375 in a murine pituitary corticotroph tumor cell model

Pivonello Claudia , Patalano Roberta , Monto Tatiana , Negri Mariarosaria , Amatrudo Feliciana , Paola Provvisiero Donatella , Simeoli Chiara , Paola Nicola , Larocca Angelica , Massimo Crescenzo Erminio , Colao Annamaria , Pivonello Rosario

Cushing’s disease (CD), caused by an adrenocorticotropic hormone (ACTH)-secreting pituitary tumor, is the most common form of hypercortisolism. Pituitary surgery is the first-line treatment of CD and medical treatment is an alternative second-line approach to control cortisol excess. Long-term exposure to glucocorticoids (GC) downregulates the expression of somatostatin receptor type 2 (SSTR2) but not type 5 (SSTR5) in human and mouse ACTH-secreting tumor cell cultures; t...

ea0099p286 | Diabetes, Obesity, Metabolism and Nutrition | ECE2024

The clock regulator bmal1 mediates the circadian control of gc-dependent skeletal muscle catabolism by driving PI3K (P100α)-GR interaction

Negri Mariarosaria , Pivonello Claudia , Amatrudo Feliciana , Patalano Roberta , Paola Provvisiero Donatella , de Angelis Cristina , Larocca Angelica , Simeoli Chiara , Colao Annamaria , Pivonello Rosario

The transcriptional activator Bmal1, reaching acrophase in the morning and bathyphase in the evening, is the main regulator of circadian clock. A mutual interaction between circadian clock and glucocorticoids (GCs) has been described as well as their implication in muscle metabolism. The current in vitro study aims at investigating Bmal1 involvement in muscle catabolism induced by GCs circadian exposure. To this aim, mouse myocytes C2C12 were serum-shocked to synchron...

ea0099ep345 | Endocrine-Related Cancer | ECE2024

Cellular localization of clock gene PER2 plays an essential role in tumour aggressiveness and drug resistance in in vitro models of hepatocellular carcinoma

Negri Mariarosaria , Amatrudo Feliciana , Paola Provvisiero Donatella , Patalano Roberta , Monto Tatiana , De Angelis Cristina , Simeoli Chiara , Simona Auriemma Renata , Colao Annamaria , Pivonello Rosario , Pivonello Claudia

Acquired resistance has limited the use of systemic molecular therapy in the management of hepatocellular carcinoma (HCC). Immunotherapy, alone and in combination with systemic molecular therapy, is now the first-line standard of care for HCC. The current in vitro study aims at investigating PER2 role in the HCC aggressiveness and drug resistance acquisition. Parental PLC/PRF/5, PLC/PRF/5 resistant to Everolimus (EveR) and to Sorafenib (SorR) cell lines were used. To evaluate ...

ea0056p674 | Nuclear receptors and Signal transduction | ECE2018

1,25 dihydroxyvitamin D reverses everolimus resistance in hepatocellular carcinoma activating mesenchymal-epithelial transition and miR-375

Pivonello Claudia , Paola Provvisiero Donatella , Negri Mariarosaria , Di Gennaro Gilda , de Angelis Cristina , Patalano Roberta , Galdiero Giacomo , Simeoli Chiara , Simona Auriemma Renata , Cristina De Martino Maria , Colao Annamaria , Pivonello Rosario

HCC is a difficult-to-treat-cancer with poor prognosis. EVOLVE-1 trial demonstrated that EVE did not improve overall survival in molecularly and clinically unselected patients with advanced HCC resistant to sorafenib. In selected patients, the well-established antitumor effect of EVE could make this a potential adjuvant therapy. Unfortunately, EVE acquired resistance due to the tumor adaptation to chronic drug use is a current challenge. VitD was deemed as potential regimen to...