Endocrine Abstracts

Introduction: Regardless of improvements in MRI, up to 20% of ACTH-secreting pituitary tumors are only identified at surgical exploration. The objective was to estimate whether there is any difference in blood vessels and the subsequent ability to uptake contrast agent in visualized micro-adenomas as compared to non-visualized on MRI ACTH-secreting pituitary tumors.Materials and methods: Retrospective evaluation of ACTH-positive pituitary tumors from pat...

Introduction: ACTH-secreting pituitary adenoma tissue differs from normal pituitary gland tissue in microRNA (miR) expression. MiRs are secreted into circulation and can be detected as potential biomarkersAim: To evaluate the difference in miR levels in plasma samples drained from inferior petrosal sinuses in patients with Cushing’s disease (CD) and ectopic-ACTH syndrome (EAS).Materials and methods: we enrolled 24 patients wi...

Relevance: Due to numerous causes of PA, AVS allows differentiating variant nosological forms of PA. The importance of differential diagnosis is due to the fact that surgery is reasonable only with unilateral variant of PA, while in idiopathic hyperaldosteronism surgery isn’t a method of choice.Purpose: To assess the diagnostic possibilities of using AVS against the background of endogenous stimulation of adrenocorticotropic hormone (ACTH) in the ea...

Objective: To estimate the outcome of neurosurgery in patients with Cushing’s disease (CD) with and without pituitary adenoma visualisation on MRI.Material and methods: Patients with confirmed CD (11.2008–11.2014) by both inferior petrosal sinus sampling (IPSS) and histological evaluation after neurosurgery were enrolled into the study. Subjects were referred for IPSS because of non-visualised pituitary adenoma or contradictory results of non-i...

According to previous research microRNA (miR) are expressed differently in corticotropinoma and ACTH-secreting neuroendocrine tumors. MiR are released into circulation by several mechanisms and considered to be promising biomarkers.Objective: To evaluate whether preselected miR are differently expressed in plasma samples of patients with ACTH-dependent Cushing’s syndrome (CS).Materials and methods: The blood samples were colle...

Introduction: Recent studies have shown that microRNA could serve as biomarkers in various types of cancer and other diseases. Aim: To reveal microRNA that differ in patients with Cushing’s diseases (CD) and Ectopic ACTH-syndrome (EAS) to form a specific panel for differential diagnosis of ACTH-dependent Cushing’s syndrome (CS).Materials and Methods: Plasma samples from both sinuses and cubital vein were drained during in...