Abstract library

67 results for "Karra".
#2031 Screening of Differentially Expressed Genes in Gastric Neuroendocrine Neoplasms Based on Human Transcriptome Array
Introduction: Gastric neuroendocrine neoplasms (g-NENs) are a heterogeneous group of tumors.
Conference: 15th Annual ENETS conference (2018)
Category: Basic Science - Genetics, epigenetics, miRNAs, Omics
Presenting Author: Yaling Wei
Authors: Wei Y, Bai J, He N, Hua X, ...
#65 Deletions of 11q21-q25 are associated with atypical lung carcinoids and a poor clinical outcome
Introduction: Lung carcinoids comprise a group of smoking-unrelated neuroendocrine tumors, which can be classified in typical (TC) and atypical (AC) carcinoids. Classification is complex and its accuracy to predict disease outcome is variable. In a previous array comparative genomic hybridization (arrayCGH) study, we showed that the average number of chromosomal alterations (≥ 1Mb) was significantly higher in ACs than in TCs (512 v. 226 per tumor) and that the most common region of chromosome loss was 11q21-q25 (Neuroendocrinology 2009;90:136-137).
Conference: 7th Annual ENETS Conference (2010)
Category: Basic
Presenting Author: MSc Dorian RA Swarts
#360 High Resolution (Epi)genomic Analysis Comparing Pulmonary Carcinoids with a Favorable and a Poor Disease Outcome
Introduction: Lung carcinoids are a heterogenous group of neuroendocrine tumors. MEN1 mutations and 11q22-q25 deletions have been implied in their tumorigenesis. Very few genome wide and methylation studies have been conducted to further elucidate molecular mechanisms underlying tumorigenesis.
Conference:
Category: Basic
Presenting Author: Msc Dorian R.A. Swarts
#357 Alternative Splicing and Differential Gene Expression in Pancreatic NETs
Introduction: Alternative splicing is an important mechanism to increase diversity of the proteome in higher organisms. These protein isoforms can provide as a selective drug target or marker for cancer diagnosis.
We present here a new DNA array that allows identification of splice variation and differential expression of 357 G protein-coupled receptors (GPCR) and 11 proteins of the extracellular matrix.
Conference:
Category: Basic
Presenting Author: Jan Lennart Körner
#355 MicroRNA Signatures as Novel Biomarkers in Small Intestine Neuroendocrine Tumors
Introduction: Small intestine (SI) neuroendocrine tumors (NET) arise from serotonin-producing intraepithelial cells in the SI referred to as enterochromafin cells. The detection of SI-NETs is often concomitant with the appearance of hepatic metastasis thus most patients with SI-NET have metastases at initial presentation. MicroRNAs (miRs) are post-transcriptional key regulators in tumorigenesis which regulate expression of other genes. Little evidence of miR expression or deregulation in SI-NETs has been reported.
Conference:
Category: Basic
Presenting Author: Su-Chen Li
Authors: Li S C, Ahmed E, Martijn C, Lloyd R, ...
#646 Immunohistochemical (IHC) and Cytogenetic Approach for Improving Diagnosis and Therapy of Ewing Sarcoma (ES)/pPNET Arising in the Ileocecal Region
Introduction: ES/pPNET primary to the ileocecal region (IpPNET) have been rarely reported on and show close similarities in histology and clinical presentation with small round blue cell tumors. The EWS gene is fused to four members of the ETS family.
Conference: 10th Annual ENETS Conference (2013)
Category: Pathology, grading, staging
Presenting Author: Md, PhD Massimo Milione
Keywords: EWS, pPnet, FEV
#62 Genome-wide DNA methylation profiling of pancreatic neuroendocrine tumors identifies distinct methylation profiles and differentially methylated gene promoter regions associated with low, medium and high grade tumors
Introduction: Integration of genetics and epigenetics has emerged as a powerful approach to studying cellular differentiation (Mikkelsen et al, 2009) and tumorigenesis (Shen et al, 2007). The study of DNA methylation is of particular importance in cancer, as causal involvement has been demonstrated and it is the most stable of all epigenetic modifications, making it a desirable marker for both early detection and treatment of tumors. Hypermethylation of CpG sites in gene promoter regions leads to decreased gene expression; if such a gene is a tumor suppressor, this leads to carcinogenesis. To date, there have been no studies of genome-wide DNA methylation profiling of NETs. This study sets out to determine the DNA methylation profiles of low, intermediate and high grade pancreatic NET liver metastases with the intention of identifying dysregulated biological pathways in the development of these tumors. A protocol for the analysis formalin-fixed paraffin embedded tissue (FFPE) has also been developed in order to study these tumors in significant numbers following this pilot study.
Conference: 7th Annual ENETS Conference (2010)
Category: Basic
Presenting Author: Dr Christina Thirlwell
#1557 Dual High Throughput Proteomic and Transcriptomic Screen for Predictive Biomarkers of Everolimus Sensitivity in Pancreatic NET
Introduction: mTOR inhibitor Everolimus is approved for the treatment of well-differentiated PNET. The heterogeneity of the response rate and the potential toxicity warrant predictive biomarkers.
Conference: 13th Annual ENETS conference (2016)
Category: Basic Science - mTOR and other pathways, signalling, receptors
Presenting Author: Dr Jerome Cros
Authors: Bucau M, Cros J, Raffenne J, Rebours V, ...
#330 Differential Protein Expression in Small Intestinal Carcinoids and Liver Metastases
Introduction: Small intestinal carcinoids (SICs) are being increasingly detected, yet often with metastatic disease. Little is known about the molecular pathways important in the development of metastasis.
Conference: 8th Annual ENETS Conference (2011)
Category: Basic
Presenting Author: Michelle Kim
Authors: Kim M, Wang D, Cui M, Ward S, ...
#424 Role of MicroRNAs in Small Intestine Neuroendocrine Tumors
Introduction: Small intestinal neuroendocrine tumors (SI-NETs) arise from enterochromaffin cells, which belong to the endocrine system. MicroRNAs (miRs) are post-transcriptional regulators. They control multiple biological processes often functioning either as tumor suppressor genes or oncogenes.
Conference: 9th Annual ENETS Conference (2012)
Category: Basic
Presenting Author: Su-Chen Li
Authors: Li S C, Martijn C, Essaghir A, Lloyd R, ...