Endocrine Abstracts

Growth hormone (GH) is the primary regulator of insulin-like growth factor-I (IGF-I) production in a wide variety of tissues. After secretion by the pituitary GH, GH is transported to the liver and stimulates IGF-I production in the liver. The IGF-I produced in the liver accounts for most of the IGF-I in the circulation. The circulating IGF-I will have effects on extra hepatic tissues as the heart, lung, muscles and kidney. Circulating IGF-I feeds back at the level of the pitu...

Background: In the core phase of the PAPE study until 24 weeks we have shown that switching to pasireotide LAR (PAS-LAR) in well-controlled acromegaly patients receiving combination therapy of somatostatin analogues and pegvisomant (PEGV), normalizes IGF1 levels in the majority of patients. PAS-LAR induced a significant PEGV sparing effect, but this was at the expense of a higher incidence of diabetes. This extension study until 48-weeks assesses the efficacy, safety and quali...

Background: The response to first-generation long-acting somatostatin analogues (LA-SSA) treatment in acromegaly depends on the expression of the somatostatin receptor (SSTR) subtypes. In contrast to octreotide and lanreotide which preferentially bind to SSTR2, pasireotide targets multiple SSTRs, with the highest binding affinity for SSTR5. It has previously been suggested that SSTR5 expression could predict the response to pasireotide LAR (PAS-LAR) treatment in acromegaly.</p...

Purpose: Although quality of life (QoL) is improved in patients with acromegaly after disease control, QoL correlates only weakly with traditional biomarkers. Our objective is to investigate a potential relation between the new serum biomarker soluble Klotho (sKlotho), GH and insulin-like growth factor 1 (IGF-1) levels and QoL.Methods: In this prospective cohort study, we investigated 54 acromegaly patients biochemically well-controlled on combination tr...

The mTOR and IGF pathways have been suggested to play a role in the pathogenesis of pheochromocytomas (PCC). mTOR inhibitors, as sirolimus (S) and everolimus (E), as well as IGF1R antagonists could be a potential novel treatment for malignant PPC.The aim of this study was to evaluate the expression of the main components of the IGF/mTOR pathway in human PCC and to investigate the effects of the mTOR inhibitors S and E and of the IGF1R/insulin receptor (I...