Endocrine Abstracts

Context: Pituitary tumor can cause infertility. It can be hormonally active adenoma (mostly prolactinoma) or hormonally inactive. Hyperprolactinemia is the most common disorder. Prolactin interferes with pulsatile secretion of the hypothalamus gonadoliberin (GnRH) and consequent pituitary gonadotropins (FSH and LH), and then leads to abnormal gonadal function. As a result, a man gets impaired spermatogenesis and endocrine function of the testicles. Infertility and reduced test...

Introduction: Acromegaly is a rare disease of the pituitary gland. Both GH and IGF-1 levels are of key importance for monitoring of treatment effects in patients with acromegaly. In some patients, divergent results of measurements of these hormones are observed. Purpose: The purpose of the study was to estimate frequency of GH and IGF-1 inconsistencies in the population of patients with acromegaly included in the Polish Register of Acromegaly Patients, a...

Background: The curative therapy of primary hyperparathyroidism (pHPT) is surgery. Data about ultrasound-guided laser ablation (LA) of parathyroid tumor are limited, however it could be a solution for patients with high surgery or anesthetic risk. We report our experience on LA of parathyroid tumors in 11 patients with pHPT with high surgery or anesthetic risk.Methods: LA was performed under ultrasound guidance with an output power of 3W. Total energy an...

IntroductionTreatment of choice in acromegaly is transsphenoidal resection of GH-secreting pituitary adenoma. Its efficacy ranges from 28% to 83% depending on tumor size and location. Random GH < 1 µg/l or nadir GH in OGTT < 0.4 µg/l and normal IGF-1 are found to be the evidence of effective surgery. However, some patients diagnosed with acromegaly remission after surgery present discordant GH and IGF-1 results.Ai...

Introduction: Active acromegaly is diagnosed based on clinical symptoms and biochemical tests, such as elevated GH concentration, IGF-1 concentration above the reference range for sex and age. However, due to certain limitations associated with IGF-1 measurements, alternative biomarkers are being sought that may be useful at various stages of the diagnostic and therapeutic process.Purpose: Evaluation of the usefulness of serum soluble α-klotho prote...

Introduction: Pheochromocytoma is a rare tumor that develops from chromaffin cells of the adrenal medulla. In about 90% of cases, it is a benign tumor. Along with catecholamines, neuroendocrine cells of the adrenal medulla have the ability to produce various proteins and neuropeptides and secrete them into the blood. Among the known biologically active substances are: neuropeptide Y and human cocaine- and amphetamine-regulated transcript (CART).Purpose: ...

Introduction: Paragangliomas belong to the neuroendocrine tumours arising from autonomic nervous system. Various localizations, symptoms that can mimic a wide range of diseases and often unpredictable ability to metastasize are the reasons why paragangliomas pose a significant diagnostic challenge. More than one third of paragangliomas is associated with germline mutations –succinate dehydrogenase (SDH) subunit genes are among the most common susceptibility genes. SDHD wa...

Introduction: The treatment of choice in persistent acromegaly after transsphenoidal adenomectomy is pharmacological treatment with first generation somatostatin analogs. They are effective in 25% to 45% of patients. Second generation somatostatin analog – pasireotide seems to be more effective.Aim: The aim of the study was to assess the efficacy and safety of pasireotide LAR in acromegaly patients resistant to first generation somatostatin analogs...

Background: McCune Albright syndrome (MAS) is a rare mosaic genetic disorder affecting 1/100 000 to 1/1 000 000 of the population. It arises from a somatic gain-of-function mutation in GNAS gene. The clinical picture is complex and includes fibrous dysplasia (FD), café-au-lait spots, precocious puberty and other hyperactive endocrinopathies. The degree of FGF23 overproduction is correlated with FD severity, and frank hypophosphatemia occurs only in patients with extensive...

Background: Obesity poses a considerable threat to health, increasing the likelihood of accompanying conditions such as type 2 diabetes, hypertension, dyslipidemia, and cancer. Ageing results in the accumulation of damaging factors leading to the development of chronic diseases. Inflammation levels, telomere length, level of neurocognitive function, metabolic age serve as acknowledged indicators of biological aging. The prevalence of premature ageing in obesity has been eviden...