Endocrine Abstracts

In response to hormone activation of the glucocorticoid receptor, GR responsive promoters move through a complex series of activity states, a phenomenon we term promoter progression. Genome-wide profiling of glucocorticoid receptor (GR) regulated loci reveals several classes of response, including genes that are transiently activated and genes that are transiently repressed. In contrast to the conventional paradigm of activation and repression, GR modulation of genome function...

We performed the analysis of correlation between gene expression profile of the papillary thyroid cancer PTC tumors and known clinical factors influencing the outcome of the disease. Gene expression profile was assessed on Human Genome U133A array (Affymetrix). We examined tumors samples obtained from 49 patients diagnosed with PTC. For further evaluation we included following factors: sex, age, tumor size, capsule invasion, multifocality, vascular invasion, lymph node and dis...

Germinal mutations in protooncogene RET are associated with the inherited medullary thyroid carcinoma (MTC) which occurs as the sole manifestation of disease (FMTC) or, more frequently, as the part of multiple endocrine neoplasia (MEN2). The contribution of RET polymorphism to the occurrence of apparent sporadic MTCs is controversial. In our previous study we have found out that the frequency of RET 769 CTT>CTG polymorphism in patients with MTCs is not significantly higher...

Introduction: Discovery of V600E (BRAFT1799A) mutation in papillary thyroid carcinoma (PTC) widened our knowledge about mechanisms of its molecular initiation. It has been revealed that activating mutations of the BRAF kinase are much more frequent in PTC than RET rearrangements.Aim of the study: Estimation of V600E BRAF mutation frequency in PTC and analysis of differences in gene expression profile between papillary thyroid car...

Introduction: Gain of function mutations of RET protooncogene are associated with hereditary medullary thyrpoid cancer. There are mainly specific hot-spot RET gene mutations however they may differ between population.Aim of the study: In this study we report the prevalence of RET mutations in Polish population based on 20 years of experience of referral polish centers.Material and methods: RET ge...