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Pancreatic Neoplasms: HELP
Articles by Ioannis G. Papaconstantinou
Based on 4 articles published since 2009
(Why 4 articles?)
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Between 2009 and 2019, Ioannis Papaconstantinou wrote the following 4 articles about Pancreatic Neoplasms.
 
+ Citations + Abstracts
1 Review A review on the role of microRNA in biology, diagnosis, and treatment of pancreatic adenocarcinoma. 2012

Papaconstantinou, Ioannis G / Lykoudis, Panagis M / Gazouli, Maria / Manta, Asimina / Polymeneas, Giorgos / Voros, Dionysios. ·Second Department of Surgery, Aretaieion Hospital, School of Medicine, University of Athens, Athens, Greece. panagis.lykoudis08@imperial.ac.uk ·Pancreas · Pubmed #22695087.

ABSTRACT: OBJECTIVES: MicroRNAs are molecules implicated in RNA-RNA interaction, playing a role in cell proliferation and differentiation, as well as in carcinogenesis. Knowledge on their biological features is necessary to understand their role in phenotypic characteristics of pancreatic adenocarcinoma. METHODS: Review of current literature concerning mechanisms of action, studying methods, implementations, and preclinical trials on pancreatic adenocarcinoma. RESULTS: More than 20 microRNAs have been identified, being involved in pancreatic adenocarcinoma biology, affecting tumor growth, metastatic potential, and chemosensitivity. Combinations of microRNAs can be used to differentiate between pancreatic adenocarcinoma and other pancreatic pathologies, as well as to assess prognosis. Manipulations of microRNAs can decrease the rate of growth or reinstall chemosensitivity to certain chemotherapeutic agents. CONCLUSIONS: The field of microRNAs promises novel diagnostic and therapeutic tools in the management of pancreatic adenocarcinoma.

2 Article Do pancreatic cancer and chronic pancreatitis share the same genetic risk factors? A PANcreatic Disease ReseArch (PANDoRA) consortium investigation. 2018

Campa, Daniele / Pastore, Manuela / Capurso, Gabriele / Hackert, Thilo / Di Leo, Milena / Izbicki, Jakob R / Khaw, Kay-Tee / Gioffreda, Domenica / Kupcinskas, Juozas / Pasquali, Claudio / Macinga, Peter / Kaaks, Rudolf / Stigliano, Serena / Peeters, Petra H / Key, Timothy J / Talar-Wojnarowska, Renata / Vodicka, Pavel / Valente, Roberto / Vashist, Yogesh K / Salvia, Roberto / Papaconstantinou, Ioannis / Shimizu, Yasuhiro / Valsuani, Chiara / Zambon, Carlo Federico / Gazouli, Maria / Valantiene, Irena / Niesen, Willem / Mohelnikova-Duchonova, Beatrice / Hara, Kazuo / Soucek, Pavel / Malecka-Panas, Ewa / Bueno-de-Mesquita, H B As / Johnson, Theron / Brenner, Herman / Tavano, Francesca / Fogar, Paola / Ito, Hidemi / Sperti, Cosimo / Butterbach, Katja / Latiano, Anna / Andriulli, Angelo / Cavestro, Giulia Martina / Busch, Olivier R C / Dijk, Frederike / Greenhalf, William / Matsuo, Keitaro / Lombardo, Carlo / Strobel, Oliver / König, Anna-Katharina / Cuk, Katarina / Strothmann, Hendrik / Katzke, Verena / Cantore, Maurizio / Mambrini, Andrea / Oliverius, Martin / Pezzilli, Raffaele / Landi, Stefano / Canzian, Federico. ·Department of Biology, University of Pisa, Pisa, Italy. · Genomic Epidemiology Group, German Cancer Research Center (DKFZ), Heidelberg, Germany. · Digestive and Liver Disease Unit, S. Andrea Hospital 'Sapienza' University of Rome, Rome, Italy. · Department of General Surgery, University Hospital Heidelberg, Heidelberg, Germany. · Gastroenterology and Gastrointestinal Endoscopy Unit, Vita-Salute San Raffaele University, San Raffaele Scientific Institute, Milan, Italy. · Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany. · Clinical Gerontology Unit, Addenbrooke's Hospital, University of Cambridge School of Clinical Medicine, Cambridge, United Kingdom. · Division of Gastroenterology and Research Laboratory, Department of Surgery, IRCCS Scientific Institute and Regional General Hospital "Casa Sollievo della Sofferenza", San Giovanni Rotondo, Italy. · Department of Gastroenterology, Lithuanian University of Health Sciences, Kaunas, Lithuania. · Department of Surgery, Oncology and Gastroenterology (DiSCOG), University of Padova, Padova, Italy. · Institute of Experimental Medicine, Czech Academy of Sciences and Institute of Clinical and Experimental Medicine, Prague, Czech Republic. · Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany. · Department of Epidemiology, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, The Netherlands. · MRC-PHE Centre for Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Imperial College, London, United Kingdom. · Cancer Epidemiology Unit, Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom. · Department of Digestive Tract Diseases, Medical University of Lodz, Lodz, Poland. · Department of Visceral Surgery, Kantonsspital Aarau AG, Aarau, Switzerland. · Department of Surgery, Pancreas Institute, University and Hospital Trust of Verona, Verona, Italy. · Second Department of Surgery, Aretaieion Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece. · Department of Gastroenterological Surgery, Aichi Cancer Center Hospital, Nagoya, Japan. · Oncological Department, Azienda USL Toscana Nord Ovest, Oncological Unit of Massa Carrara, Carrara, Massa and Carrara, Italy. · Department of Medicine (DIMED), University of Padova, Padova, Italy. · Department of Basic Medical Sciences, Laboratory of Biology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece. · Department of Oncology, Palacky University Medical School and Teaching Hospital, Olomouc, Czech Republic. · Department of Gastroenterology, Aichi Cancer Center Hospital, Nagoya, Japan. · Biomedical Center, Faculty of Medicine in Pilsen, Charles University in Prague, Pilsen, Czech Republic. · Department for Determinants of Chronic Diseases (DCD), National Institute for Public Health and the Environment, Bilthoven, The Netherlands. · Department of Epidemiology and Biostatistics, The School of Public Health, Imperial College London, St Mary's Campus, London, United Kingdom. · Department of Social & Preventive Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia. · Division of Clinical Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany. · Division of Preventive Oncology, German Cancer Research Center (DKFZ), and National Center for Tumor Diseases (NCT), Heidelberg, Germany. · German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany. · Department of Laboratory Medicine, University-Hospital of Padova, Padova, Italy. · Division of Molecular and Clinical Epidemiology, Aichi Cancer Center Research Institute, Nagoya, Japan. · Department of Epidemiology, Nagoya University Graduate School of Medicine, Nagoya, Japan. · Department of Surgery, Academic Medical Centre, Amsterdam, the Netherlands. · Department of Pathology, Academic Medical Centre, Amsterdam, the Netherlands. · Institute for Health Research, Liverpool Pancreas Biomedical Research Unit, University of Liverpool, Liverpool, United Kingdom. · Division of General and Transplant Surgery, University of Pisa, Pisa, Italy. · Dipartimento di Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, University of Pisa, Pisa, Italy. · Transplant Surgery Department, Institute for Clinical and Experimental Medicine, Prague, Czech Republic. · Pancreas Unit, Department of Digestive Diseases and Internal Medicine Sant'Orsola-Malpighi Hospital, Bologna, Italy. ·Int J Cancer · Pubmed #28913878.

ABSTRACT: Pancreatic ductal adenocarcinoma (PDAC) is a very aggressive tumor with a five-year survival of less than 6%. Chronic pancreatitis (CP), an inflammatory process in of the pancreas, is a strong risk factor for PDAC. Several genetic polymorphisms have been discovered as susceptibility loci for both CP and PDAC. Since CP and PDAC share a consistent number of epidemiologic risk factors, the aim of this study was to investigate whether specific CP risk loci also contribute to PDAC susceptibility. We selected five common SNPs (rs11988997, rs379742, rs10273639, rs2995271 and rs12688220) that were identified as susceptibility markers for CP and analyzed them in 2,914 PDAC cases, 356 CP cases and 5,596 controls retrospectively collected in the context of the international PANDoRA consortium. We found a weak association between the minor allele of the PRSS1-PRSS2-rs10273639 and an increased risk of developing PDAC (OR

3 Article MicroRNA gene polymorphisms in pancreatic cancer. 2013

Pavlakis, Emmanouel / Papaconstantinou, Ioannis / Gazouli, Maria / Theodosopoulos, Theodosios / Karamanolis, Georgios / Genatas, Konstantinos / Ladas, Spiros D. ·2nd Department of Surgery, Areteion Hospital, School of Medicine, University of Athens, Athens, Greece. ·Pancreatology · Pubmed #23719600.

ABSTRACT: MicroRNAs (miRNAs) act as regulators of gene expression via translational repression. Single nucleotide polymorphisms (SNPs) in miRNAs have been shown to affect the regulatory capacity of miRNAs by influencing miRNA processing and/or miRNA-mRNA interactions. The purpose of this study was to investigate the association between 2 SNPs commonly found in precursor miRNA and the susceptibility and clinicopathological characteristics of pancreatic cancer. The rs11614913/miR-196a2, rs2910164/miR-146a SNPs were genotyped in 93 patients with pancreatic cancer and in 122 healthy controls. No significant differences in genotype distributions between controls and PC patients were observed. However, rs2910164 GG and rs11614913 CC genotypes and the rs2910164C/rs11614913C and rs2910164G/rs11614913C haplotypes were significantly overrepresented in PC patients with T1 and T2 tumor status than in those with T3 and T4. Our findings suggested that the rs2910164 and rs11614913 SNPs might play a role in pancreatic tumorigenesis, but the molecular mechanism underlying the particular sequence variations in miRNA that can cause aberrant expression remains to be determined.

4 Article Expression of microRNAs in patients with pancreatic cancer and its prognostic significance. 2013

Papaconstantinou, Ioannis G / Manta, Asimina / Gazouli, Maria / Lyberopoulou, Anna / Lykoudis, Panagis M / Polymeneas, Giorgos / Voros, Dionysios. ·Second Department of Surgery, Aretaieion Hospital, Athens, Greece. ·Pancreas · Pubmed #22850622.

ABSTRACT: OBJECTIVES: Investigation of expression profile of well-established microRNAs in pancreatic adenocarcinoma, and its correlation with clinicopathological factors. METHODS: Eighty-eight samples of ductal pancreatic adenocarcinoma and 98 control samples were analyzed by real-time polymerase chain reaction for miR-21, miR-31, miR-122, miR-145, miR-146a, miR-155, miR-210, and miR-222 expressions. The results were normalized and then statistically analyzed using nonparametric statistical tests. RESULTS: According to our results, miR-21, miR-155, miR-210, miR-221, and miR-222, were overexpressed in diseased tissues than in the control samples, whereas miR-31, miR-122, miR-145, and miR-146a were underexpressed. Additionally, the expressions of miR-21 and miR-155 were associated with tumor stage and poor prognosis. CONCLUSIONS: The tumorigenic role of miR-21 and miR-155 was confirmed, whereas down-regulation of miR-31, miR-145, and miR-146a, in dispute with current literature, renders necessary the revision of use of microRNAs as biological markers.