The aggressiveness of succinate dehydrogenase subunit B-deficient chromaffin cells is reduced when their bioelectrical properties are restored by glibenclamide.

Pheochromocytomas/paragangliomas (PPGLs) are neuroendocrine tumours, mostly resulting from mutations in predisposing genes. Mutations of succinate dehydrogenase (SDH) subunit B (SDHB) are associated with high probability of metastatic disease. Since bioelectrical properties and signalling in cancer are an emerging field, we investigated the metabolic, functional and electrophysiological characteristics in human succinate dehydrogenase subunit B (SDHB)-deficient pheochromocytoma cells.

Hemodynamic parameters in patients undergoing surgery for pheochromocytoma/paraganglioma: a retrospective study.

Background: Pheochromocytoma (PHEO) and paraganglioma (PGL) are rare neuroendocrine tumors characterized by hemodynamic instability, caused by the paroxysmal release of catecholamines. Patients may develop cardiovascular complications in the perioperative phase due to the massive release of catecholamines, particularly during anesthetic induction and surgical manipulation of the tumor. The aim of this retrospective study was to evaluate the risk factors involved in perioperative hemodynamic instability in patients who underwent surgery for chromaffin tumors.

Tumour microenvironment in pheochromocytoma and paraganglioma.

Pheochromocytomas and Paragangliomas (Pheo/PGL) are rare catecholamine-producing tumours derived from adrenal medulla or from the extra-adrenal paraganglia respectively. Around 10-15% of Pheo/PGL develop metastatic forms and have a poor prognosis with a 37% of mortality rate at 5 years. These tumours have a strong genetic determinism, and the presence of succinate dehydrogenase B (SDHB) mutations are highly associated with metastatic forms.

The regulatory effect of sex steroids on the RhoA/ROCK pathway in the rat distal vagina.

Background: Sex steroids have been demonstrated as important modulators of vaginal function. The RhoA/ROCK calcium-sensitizing pathway plays a role in genital smooth muscle contractile mechanism, but its regulation has never been elucidated.

Aim: This study investigated the sex steroid regulation of the vaginal smooth muscle RhoA/ROCK pathway using a validated animal model.

Metformin Treatment Induces Different Response in Pheochromocytoma/Paraganglioma Tumour Cells and in Primary Fibroblasts.

Pheochromocytoma/paragangliomas (PPGLs) are neuroendocrine tumours, often non-metastatic, but without available effective treatment for their metastatic form. Recent studies have shown that metformin exhibits antiproliferative activity in many human cancers, including PPGLs. Nevertheless, no data are available on the role of metformin on PPGL cells (two-dimension, 2D) and spheroids (three-dimension, 3D) migration/invasion.

SDHB and SDHD silenced pheochromocytoma spheroids respond differently to tumour microenvironment and their aggressiveness is inhibited by impairing stroma metabolism.

Germline mutations in more than 20 genes, including those encoding for the succinate dehydrogenase (SDH), predispose to rare tumours, such as pheochromocytoma/paraganglioma (PPGL). Despite encoding for the same enzymatic complex, SDHC and SDHD mutated PHEO/PGLs are generally benign, while up to 80% of SDHB mutated ones are malignant. In this study, we evaluated the different effects of tumour microenvironment on tumour cell migration/invasion, by co-culturing SDHB or SDHD silenced tumour spheroids with primary cancer-associated fibroblasts (CAFs).

A rare case of Krukenberg tumor by gallbladder cancer.

Introduction: Gallbladder cancer commonly spreads by direct extension to the liver and adjacent organs of the gastrointestinal tract. Ovarian metastases by biliary origin, though known, are a very uncommon finding.

Presentation Of Case: We report a rare metastatic localization by gallbladder cancer, Krukenberg tumor mimicking a primitive ovarian cancer.

Complex multisystem phenotype associated with the mitochondrial DNA m.5522G>A mutation.

Mitochondrial tRNAs are responsible for more than half of pathogenic point mutations in the mitochondrial genome (mtDNA). Different mutations give rise to widely differing phenotypes, ranging from isolated organ-specific diseases to multisystem conditions. Herein, we report a 40-year-old woman presenting with a complex multisystem phenotype including sensorineural hearing loss, retinopathy, severe dilated cardiomyopathy, non-insulin dependent diabetes mellitus, and renal failure.

Effects of ultralow topical estriol dose on vaginal health and quality of life in postmenopausal women who underwent surgical treatment for pelvic organ prolapse.

Objective: To evaluate the efficacy of low concentrations of vaginal estriol gel in postmenopausal women with pelvic static disorders before and after vaginal surgical treatment, assessing vaginal health, sexual function, and quality of life (QoL).

Methods: Women affected by genital prolapse were enrolled. Vaginal health, QoL, and sexual function were investigated at baseline (T0), before surgery (T1), and 13 weeks after surgery (T2).

Rare cause of odynophagia: Giant esophageal ulcer.

Gastrointestinal complications are a frequent cause of morbidity after transplantation and may affect up to 40% of kidney transplant recipients. Here we report a rare case of idiopathic giant esophageal ulcer in a kidney transplant recipient. A 37-year-old female presented with a one-week history of odynophagia and weight loss.

Quality of life and sexual function of naturally postmenopausal women on an ultralow-concentration estriol vaginal gel.

Objective: This study aims to evaluate the sexual function and quality of life (QoL) of naturally postmenopausal women affected by genitourinary syndrome of menopause who were treated with an ultralow-concentration estriol vaginal gel (0.005%).

Methods: Postmenopausal women with vulvovaginal atrophy symptoms and sexual disorders were enrolled in a case-control study.