Plemochoe is an open access institutional repository established for the sole purpose of gathering preserving and distributing original research material produced by the EUC faculty and researchers. Plemochoe aims to validate the intellectual life of the University by promoting scientific research to the local and international communities. Plemochoe comprises undergraduate and graduate dissertations, doctoral theses, journal articles, conference papers, working papers, technical reports, and other educational or research documents.
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Recent Additions
  • Publication
    Biologic Therapies and Risk of Infection and Malignancy in Patients With Inflammatory Bowel Disease: A Systematic Review and Network Meta-analysis
    (W.B. Saunders, 2016-10-01)
    Stefanos Bonovas
    ;
    Gionata Fiorino
    ;
    Mariangela Allocca
    ;
    Georgios K. Nikolopoulos
    ;
    Laurent Peyrin-Biroulet
    ;
    Silvio Danese
    ;
    Background & Aims Safety issues are a major concern for patients considering treatments for inflammatory bowel disease (IBD). We performed a systematic review and meta-analysis to determine whether biologic agents affect the risk of infection or malignancy in adults with IBD. Methods We searched PubMed, Embase, Scopus, Cochrane IBD Group Specialized Trials Register, World Health Organization International Clinical Trials Registry Platform, and ClinicalTrials.gov through March 2016 for randomized placebo-controlled or head-to-head trials of biologic agents approved for treatment of adults with IBD (ie, adalimumab, certolizumab, golimumab, infliximab, natalizumab, or vedolizumab). Two reviewers independently extracted study data and outcomes (serious infections, opportunistic infections, tuberculosis, any infection, and malignancies) and rated each trial's risk of bias. We used conventional meta-analysis to synthesize direct evidence and a network meta-analysis for adjusted indirect treatment comparisons. Results We identified 49 randomized placebo-controlled studies comprising 14,590 participants. Synthesis of the evidence indicated that patients treated with biologics had a moderate increase in risk of any infection (odds ratio [OR], 1.19; 95% confidence interval [CI], 1.10–1.29) and a significant increase in risk of opportunistic infections (OR, 1.90; 95% CI, 1.21–3.01). Risk of serious infections was not increased in patients treated with biologics (OR, 0.89; 95% CI, 0.71–1.12). On the contrary, biologics appeared to significantly reduce risk of serious infections in studies with low risk of bias (OR, 0.56; 95% CI, 0.35–0.90). We did not find an increased risk of malignancy with use of biologic agents (OR, 0.90; 95% CI, 0.54–1.50), but data were insufficient in terms of exposure and follow-up times. None of the indirect comparisons, either among the individual agents or between the anti–tumor necrosis factor and anti-integrin classes, reached significance for any of the outcomes analyzed. Conclusions On the basis of a systematic review and meta-analysis, biologic agents increase the risk of opportunistic infections in patients with IBD, but not the risk of serious infections. It is necessary to continue to monitor the comparative and long-term safety profiles of these drugs.
  • Publication
    Influenza vaccine effectiveness in preventing hospitalizations with laboratory-confirmed influenza in Greece during the 2014-2015 season: A test-negative study
    (John Wiley and Sons Inc., 2016-11-01) ;
    Athanasios Kossyvakis
    ;
    Angeliki Melidou
    ;
    Anastasia Andreopoulou
    ;
    Maria Exindari
    ;
    Georgia Gioula
    ;
    Antonios Kalliaropoulos
    ;
    Kyriaki Tryfinopoulou
    ;
    Vasiliki Pogka
    ;
    Georgia Spala
    ;
    Nikolaos Malisiovas
    ;
    Andreas Mentis
    The 2014–2015 influenza season was marked by circulation of antigenically drifted A/H3N2 strains, raising the possibility of low seasonal influenza Vaccine Effectiveness (VE). We assessed VE against hospitalization with laboratory-confirmed influenza for the 2014–2015 season, using routine surveillance data. Non-sentinel swab samples from Greek hospital inpatients were tested for influenza by RT-PCR in three laboratories, covering the entire country. We estimated VE using a test-negative design. Out of 883 patients with known vaccination status, 161 (18.2%) were vaccinated, and 392/883 patients (44.4%) tested positive for influenza, of whom 162 (41.3%) had type B and 151 (38.5%) had A/H3N2. Adjusted VE was 31.6% (95%CI: 2.9–51.8%) against any influenza, 46.8%, 95%CI: 12.5–67.6%) against type B and −1.9%, 95%CI: −69.5 to 38.7%) against A/H3N2. VE against non-ICU hospitalization appeared to be higher, but the difference did not reach statistical significance. Circulating A/H3N2 viruses showed substantial antigenic drift, while about half of the type B strains were similar to the vaccine strain. Despite the antigenic drift of the A/H3N2 strains, the vaccine still offered substantial protection against hospitalization with laboratory-confirmed influenza, mostly due to a surge in type B influenza late in the season. Vaccine coverage was low, even among groups targeted for vaccination, and considerable effort should be made to improve it. J. Med. Virol. 88:1896–1904, 2016.
  • Publication
    Antiviral susceptibility profile of influenza A viruses; keep an eye on immunocompromised patients under prolonged treatment
    (Springer Verlag, 2017-02-01) ;
    A. Kossyvakis
    ;
    A.-F. A. Mentis
    ;
    K. Tryfinopoulou
    ;
    V. Pogka
    ;
    A. Kalliaropoulos
    ;
    E. Antalis
    ;
    A. Meijer
    ;
    S. Tsiodras
    ;
    P. Karakitsos
    ;
    A. F. Mentis
    There was an increase in severe and fatal influenza cases in Greece during the 2011–2015 post-pandemic period. To investigate causality, we determined neuraminidase (NA) inhibitor susceptibility and resistance-conferring NA and hemagglutinin (HA) mutations in circulating influenza type A viruses during the pandemic (2009–2010) and post-pandemic periods in Greece. One hundred thirty-four influenza A(H1N1)pdm09 and 95 influenza A(H3N2) viruses submitted to the National Influenza Reference Laboratory of Southern Greece were tested for susceptibility to oseltamivir and zanamivir. Antiviral resistance was assessed by neuraminidase sequence analysis, as well as the fluorescence-based 50 % inhibitory concentration (IC50) method. Five influenza A(H1N1)pdm09 viruses (2.2 %) showed significantly reduced inhibition by oseltamivir (average IC50 300.60nM vs. 1.19nM) by Gaussian kernel density plot analysis. These viruses were isolated from immunocompromised patients and harbored the H275Y oseltamivir resistance-conferring NA substitution. All A(H1N1)pdm09 viruses were zanamivir-susceptible, and all A(H3N2) viruses were susceptible to both drugs. Oseltamivir-resistant viruses did not form a distinct cluster by phylogenetic analysis. Permissive mutations were detected in immunogenic and non immunogenic NA regions of both oseltamivir- resistant and susceptible viruses in the post-pandemic seasons. Several amino acid substitutions in the HA1 domain of the HA gene of post-pandemic viruses were identified. This study indicated low resistance to NAIs among tested influenza viruses. Antiviral resistance emerged only in immunocompromised patients under long-term oseltamivir treatment. Sequential sample testing in this vulnerable group of patients is recommended to characterise resistance or reinfection and viral evolution.
  • Publication
    Excess all-cause and influenza-attributable mortality in Europe, December 2016 to February 2017
    (European Centre for Disease Prevention and Control (ECDC), 2017-04-06) ;
    Lasse S Vestergaard
    ;
    Jens Nielsen
    ;
    Tyra G Krause
    ;
    Laura Espenhain
    ;
    Katrien Tersago
    ;
    Natalia Bustos Sierra
    ;
    Gleb Denissov
    ;
    Kaire Innos
    ;
    Mikko J Virtanen
    ;
    Anne Fouillet
    ;
    Anna Paldy
    ;
    Janos Bobvos
    ;
    Lisa Domegan
    ;
    Joan O’Donnell
    ;
    Matteo Scortichini
    ;
    Annamaria de Martino
    ;
    Kathleen England
    ;
    Neville Calleja
    ;
    Liselotte van Asten
    ;
    Anne C Teirlinck
    ;
    Ragnhild Tønnessen
    ;
    Richard A White
    ;
    Susana P Silva
    ;
    Ana P Rodrigues
    ;
    Amparo Larrauri
    ;
    Inmaculada Leon
    ;
    Ahmed Farah
    ;
    Christoph Junker
    ;
    Mary Sinnathamby
    ;
    Richard G Pebody
    ;
    Arlene Reynolds
    ;
    Jennifer Bishop
    ;
    Diane Gross
    ;
    Cornelia Adlhoch
    ;
    Pasi Penttinen
    ;
    Kåre Mølbak
    Since December 2016, excess all-cause mortality was observed in many European countries, especially among people aged ≥ 65 years. We estimated all-cause and influenza-attributable mortality in 19 European countries/regions. Excess mortality was primarily explained by circulation of influenza virus A(H3N2). Cold weather snaps contributed in some countries. The pattern was similar to the last major influenza A(H3N2) season in 2014/15 in Europe, although starting earlier in line with the early influenza season start.
  • Publication
    Systematic review with meta‐analysis: use of 5‐aminosalicylates and risk of colorectal neoplasia in patients with inflammatory bowel disease
    (Blackwell Publishing Ltd, 2017-05-01) ;
    S. Bonovas
    ;
    G. Fiorino
    ;
    G. Nikolopoulos
    ;
    L. Peyrin‐Biroulet
    ;
    S. Danese
    Background: The relationship of 5-aminosalicylates’ use with the risk of colorectal neoplasia in patients with inflammatory bowel disease (IBD) has been the focus of a growing body of research. Aim: To investigate this association through an updated meta-analysis of observational studies. Methods: PubMed, Scopus and major conference proceedings were searched up to December 2016. The identified studies were evaluated for publication bias and heterogeneity. Pooled relative risk (RR) estimates were calculated using random-effect models. Detailed subgroup analyses were performed. The GRADE approach was used to assess the quality of evidence. Results: Thirty-one independent observational studies including 2137 cases of colorectal neoplasia (of which 76% were cancers) were incorporated. Between-study heterogeneity was moderate, while strong suspicion of small-study effects was raised. The overall analysis revealed a protective association between 5-aminosalicylates’ use and colorectal neoplasia (RR = 0.57, 95% CI: 0.45–0.71). When the analysis was stratified according to study design and setting, the association was significant in cohort (RR = 0.65, 95% CI: 0.43–0.99; n = 10) and case–control studies (RR = 0.53, 95% CI: 0.40–0.70; n = 21), population-based (RR = 0.70, 95% CI: 0.52–0.94; n = 12) and hospital-based studies (RR = 0.46, 95% CI: 0.34–0.61; n = 19). Exposure to 5-aminosalicylates was protective against cancer (RR = 0.58, 95% CI: 0.45–0.74) and dysplasia (RR = 0.54, 95% CI: 0.35–0.84). The reduction in colorectal neoplasia risk was strong in ulcerative colitis (RR = 0.50, 95% CI: 0.38–0.64), but nonsignificant in Crohn's disease (RR = 0.76, 95% CI: 0.43–1.33). Mesalazine (mesalamine) use was protective (RR = 0.70, 95% CI: 0.51–0.94) with evidence of a dose-effect. The effect of sulfasalazine was marginally nonsignificant (RR = 0.72, 95% CI: 0.51–1.01). Conclusions: Our findings support a potential chemopreventive role of 5-aminosalicylates in IBD. Further, high-quality prospective research is warranted.
Most viewed
  • Person
    Louca, Loucas T.
    Dr. Loucas Louca is an Associate Professor of Science Education at the European University Cyprus. His research interests focus on student abilities for inquiry in science, on modeling-based learning in scinece and on teachers’ instructional strategies for promoting student inquiry in science. He has also a longstanding interest in supporting professional teacher development in science education. He has been involved in several nationally and EU funded projects focusing on student inquiry in science, teacher professional development, professional learning communities, development of curriculum materials, promoting opportunities for gender balance in science education, STEM education, and promoting inquiry-based teaching and learning in science. He has also experiences in the development and enactment of afternoon clubs for young children in Science, and he also has designed various out-of-school STEM activities for students.
  • Research Project
    Mediterranean practitioners’ network & capacity
    The Mediterranean and Black Sea region is an international centre of economic and commercial development and transactions. At the same time, though, it is characterised by a very volatile and dynamically changing security environment that poses severe threats and challenges on the societies and their prosperity. MEDEA aspires to contribute to the establishment of safer and more secure societies throughout the Mediterranean and Black Sea region using research and innovation as a catalyst to promote collaboration between practitioners from diverse disciplines and countries. The MEDEA project, during its 60 months of implementation aims to: Establish and Operate the MEDEA network. A multi-disciplinary network of security practitioners, with active links to policy makers and users/providers of security innovations across the M&BS countries focusing on Border Protection and other Security- and Disaster-Related tasks. All MEDEA members will engage in activities towards maintaining its sustainability and longevity even after the end of the project. Engage participants in anticipatory governance on emerging security challenges that the Mediterranean and Black Sea regions would face in the coming years (present until +10 years), based on a threefold structure that forms the backbone of the project: i) understanding the unsatisfactory state of play, ii) design the desirable future and iii) define a resilient pathway on how to achieve this. Push for the “co-creation” of security technology and capabilities innovations between practitioners and innovation. Their evaluation and prioritization will be based on a multi-criteria analysis (technology, operational, cost-benefit, etc.) and it will be linked to Human Development, Policy Making and Organizational Improvements in-terms of facilitating their use by the practitioners. Establish and annually update the Mediterranean Security Research and Innovation Agenda (MSRIA), that identifies areas where security & defence research is needed (including the research needs that are not covered by civilian research) and establishes recommendations for European Security & Defence technology investments. It will constitute the common position of the Mediterranean practitioners’ for future call for proposals from European and National funding mechanisms.
  • Research Project
    Global Response Against Child Exploitation
    GRACE aims to equip European law enforcement agencies with advanced analytical and investigative capabilities to respond to the spread of online child sexual exploitation material. The growth in online child sexual exploitation and abuse material is a significant challenge for European law enforcement agencies. Referrals of CSEM exceed the capacity of LEAs to respond in a practical and timely manner. To safeguard victims, prosecute offenders and limit the spread of CSEM, LEAs need a next-generation AI-powered investigative platform. Background The sexual exploitation and abuse of children, the production of CSEM and subsequent distribution of this material via the internet is a shocking crime. Referrals from Online Service Providers (OSPs) are crucial to fighting CSE. Growth in the number of referrals of CSEM to LEAs is driven both by increased availability and distribution of online CSEM and improved detection and reporting processes. The extent of referrals is affecting LEAs' capacity to respond promptly, leading to an inability to prevent harm to infants and children, rescue those in immediate danger, and investigate and prosecute perpetrators. Core concepts Recent improvements to the referral process have improved LEAs capabilities. However, the sheer volume of data obtained in CSE cases stretches human resources, the limits of manual analysis beyond most LEAs reach. Given there has been a 4,000% increase in referrals since 2014, a new approach to managing, processing and analysing this content is necessary. At the heart of the project, GRACE has three core concepts. Adress the volume and analyse the content of online CSEM through technological innovations; Provide genuine operational value to LEAs in their investigation of online CSEM; and Impact at the strategic and policy level in the harmonisation of EU-wide responses to CSE.
  • Research Project
    Developing Flipped Methods
    Flipped classroom (FC) is a pedagogical approach in which the conventional notion of classroom-based learning is inverted, so that students are introduced to the learning material before class, with classroom time then being used to deepen understanding through discussion with peers and problem-solving activities facilitated by teachers. Although using FC methods has multiple benefits and is growing popularity, researchers and practitioners indicate that among impediments of widespread usage of FC methods are the additional time and technological support in relation to development of flipped learning activities. The flipped approach often involves the investment of significant time and energy on the part of instructors (e.g., recording video lectures; designing additional in-class activities). It is therefore recommended for teachers flipping their courses in team. By working in team, teachers can share their experiences of implementing flipped classrooms as well as their teaching resources The “Developing Flipped Methods for Teaching” project aims at developing all the necessary flipped learning pedagogical material (out-of-class tasks, pre-assessment tools, in-class activities) for teaching a discipline (psychology) covering a whole academic year course. The project aims at overcoming the difficulties of elaborating multiple materials for teaching with flipped classroom design. By collaboration of six education institutions an entire discipline will be covered with FC materials in seven languages (English, Romanian, Hungarian, Portuguese, Bulgarian, Slovak and Greek), tackling a gap between educational research and practice. One of the project partners, The Mihai Eminescu National Pedagogical High School (Romania) is a secondary-level educational institute. Due to the particularities of the Romanian education system they offer teacher and kindergarten teacher training program, whereby graduates receive a teacher-kindergarten teacher degree. In Romania psychology is part of the secondary-level school curricula, so high schools can also benefit from educational materials translated to Romanian. Their main role in the project is to translate the developed educational methods by the higher education institutes from the partnership, to test and adapt it to the Romanian requirements. The partnership is composed from other six Higher Education Institutes with Teacher Training Faculties, who have important experience as partners or leaders Strategic Partnership projects and educational innovation. The main intellectual output of the project are the pedagogical materials for teaching an entire course of psychology with flipped classroom (FC) methods (materials for 30 courses), available in seven languages. Each pedagogical material is composed of instructional video, out-of-class work plans (online activities) associated with Low-stakes, formative assignments as well as in-class activities and assessment tools.