Searchable abstracts of presentations at key conferences in endocrinology

ea0026p84 | Endocrine tumours and neoplasia | ECE2011

The demethylating agent 5-aza-2-deoxycytidine upregulates somatostatin type 2 receptor expression and enhances internalization of radiolabeled somatostatin analogue in human carcinoid tumour cells

Veenstra M J , van Koetsveld P M , Farrel W E , Dogan F , Waaijers A M , Sprij-Mooij D M , Lamberts S W J , Vitale G , Hofland L

Introduction: Neuroendocrine tumors (NET) are rare tumors originating from various types of neuroendocrine cells. The somatostatin receptor type 2 (sst2) is expressed in NET cells and is a target for therapy with somatostatin analogues.Epigenetic changes including methylation of DNA at CpG dinucleotides, and particularly in the promoter region of genes can inhibit transcription. Methylation can be inhibited by cytidine analogues such as 5-aza-...

ea0026p188 | Neuroendocrinology | ECE2011

Glucocorticoid receptor gene polymorphisms are associated with disease course during pregnancy and the post-partum period in rheumatoid arthritis

Quax R A M , de Man Y A , Koper J W , Willemsen S P , Lamberts S W J , Hazes J M W , Dolhain R J E M , Feelders R A

Background: The mechanism underlying the spontaneous improvement of rheumatoid arthritis (RA) during pregnancy and the subsequent post-partum flare is incompletely understood. The glucocorticoid receptor (GR) polymorphisms Bcl1 and 9β are associated with an increased and decreased glucocorticoid sensitivity respectively. We examined the relation between carriership of these functional GR polymorphisms and disease course during pregnancy and post-partum in RA...

ea0026p351 | Steroid metabolism | ECE2011

Evaluation of a method to measure long term cortisol levels in health and disease

Manenschijn L , Koper J W , van den Akker E L T , Feelders R A , Lamberts S W J , van Rossum E F C

Introduction: Elevated levels of cortisol are known to induce a wide range of pathology, e.g. abdominal obesity, type 2 diabetes and cardiovascular disease. Measuring serum and saliva cortisol is limited to one time point. Measurement of cortisol in scalp hair is a recently developed method to measure long term cortisol levels and might reflect cortisol exposure in patients with hyper- or hypo-cortisolism and in healthy persons. Our aims were to explore this measurement of cor...

ea0026p363 | Adrenal medulla | ECE2011

Expression of IGF/mTOR pathway components in human pheochromocytomas and in vitro inhibition of PC12 rat pheochromocytoma cell growth by mTOR inhibitors

De Martino M C , Feelders R A , van Koetsveld P M , De Krijger R R , Janssen J A M J L , Sprij-Mooij D , Lamberts S W J , de Herder W W , Colao Annamaria , Pivonello Rosario , Hofland Leo

The pathogenesis of pheochromocytomas (pheo) is poorly understood and malignant pheo need new treatment options. mTOR inhibitors, as sirolimus (S) and everolimus (E), are new promising antineoplastic drugs.Aim: To evaluate whether the IGF/mTOR pathways have a role in the pathogenesis and whether S and E may have antiproliferative effects in pheo.In 24 human pheo and two normal adrenal medulla (NM), we evaluated the mRNA expression ...