Endocrine Abstracts

PATZ1, a member of the POZ-ZF protein family of transcription factors is emerging as an important cancer-associated factor that can act either as oncogene or tumour-suppressor depending on the cellular context. Consistent with a tumour-suppressor role in thyroid cells, we have shown that PATZ1 is highly downregulated in anaplastic thyroid carcinomas compared to normal thyroid tissue and is a powerful inhibitor of anaplastic thyroid cancer cell survival, migration, invasiveness...

Objective: Abnormal mitochondria are well known in oxyphilic thyroid tumors but recent data also confirm profound mitochondrial alterations in other thyroid carcinomas. These changes are linked to the aggressiveness of the tumors. Our group recently demonstrated in an in vivo model, that inhibition of phosphoinositide 3-kinase (PI3K) signalling suppressed the invasive and metastatic behaviour of thyroid cancer cells. Here, we evaluated whether a modulation of PI3K sig...

Poorly differentiated thyroid cancers are associated with variable types of p53 function derangements and bad prognosis due to the lack of effective treatments. SP600125 is a widely used JNK-inhibitor which recently showed anticancer properties in a p53 related way. Here, we tested the effect of SP600125 on four different thyroid cancer cell lines derived from PDTCs and ATCs with different p53 status.We analyzed the effects on cellular replication and ap...

Introduction: The global patterns of aberrant DNA methylation in thyroid cancer are not known. In this study, we have used DNA methylation arrays to determine, for the first time, the genome-wide promoter methylation status of different subtypes of thyroid tumors.Material and methods: We analyzed a cohort of 54 snap frozen thyroid samples (thirteen papillary tumors, six follicular, eleven anaplastic, twenty medullar and four normal tissue samples). Also ...

Recent studies demonstrated that the calcium/calmodulin dependent kinase 2 (CaMKII) is involved in the regulation of proliferation and survival of epithelial cells, were it phosphorylates RAF-1 and modulates MAPK pathway. A endogenous CaMKII inhibitor (hCaKIINα) is expressed in some cell types. It is down-expressed in colon and in ovarian cancer where it inversely correlates with the disease extension.Aim of our study is to determine the possible ro...

ESE Young Investigator AwardBackground: It is still discussed if subclinical hyperthyroidism and ‘high-normal’ thyroid function are risk-factors for cardiovascular mortality.Objectives: To examine the risk of cardiovascular and all-cause mortality in relation to subclinical hyperthyroidism.Methods: Patients consulting their general practitioner from 2000 to 2009 in Copenhagen, Denmark, who ...