Parcourir par auteur "Kyriakopoulou, Z."
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Characterization of novel intergenogroup and intergenotype recombinant noroviruses from central Greece
Ruether, I. G. A.; Dimitriou, T. G.; Tsakogiannis, D.; Kyriakopoulou, Z.; Amoutzias, G. D.; Gartzonika, C.; Levidiotou-Stefanou, S.; Markoulatos, P. (2014)Noroviruses (NoVs) are a major causative agent of acute gastroenteritis in humans. They are members of the Caliciviridae family and based on the genetic analysis of the RdRp and capsid regions, human NoVs are divided into ... -
Circulation of intergenotype recombinant noroviruses GII.9/GII.6 from 2006 to 2011 in central Greece
Ruether, I. G. A.; Tsakogiannis, D.; Kyriakopoulou, Z.; Dimitriou, T. G.; Papamichail, C.; Gartzonika, C.; Leveidiotou-Stefanou, S.; Markoulatos, P. (2014)Noroviruses (NoVs) are members of the Caliciviridae family and are recognized as a worldwide cause of acute nonbacterial gastroenteritis. Based on the genetic analysis of the RdRp and capsid regions, human NoVs are divided ... -
Combined 5 ' UTR RFLP analysis and VP1 sequencing for epidemic investigation of enteroviruses
Kyriakopoulou, Z.; Tsolis, K.; Pliaka, V.; Tsakogiannis, D.; Ruether, I. G. A.; Gartzonika, C.; Levidiotou-Stefanou, S.; Markoulatos, P. (2013)Enteroviruses, the main cause of aseptic meningitis, consist of 100 serotypes, and many of them have been associated with large outbreaks. In the present study, a comparison of RFLP analysis of the 5' untranslated region ... -
Complete genomic characterization of an intertypic Sabin 3/Sabin 2 capsid recombinant
Dedepsidis, E.; Pliaka, V.; Kyriakopoulou, Z.; Brakoulias, C.; Levidiotou-Stefanou, S.; Pratti, A.; Mamuris, Z.; Markoulatos, P. (2008)The genetic properties of strain K/2002, isolated from fecal samples of a 7-month-old child who had received his first oral poliovirus vaccine (OPV) dose at the age of 3 months, are described. Preliminary sequencing ... -
Complete nucleotide sequence analysis of the VP1 genomic region of Echoviruses 6 isolated from sewage in Greece revealed 98% similarity with Echoviruses 6 that were characterized from an aseptic meningitis outbreak 1 year later
Kyriakopoulou, Z.; Dedepsidis, E.; Pliaka, V.; Tsakogiannis, D.; Ruether, I. G. A.; Krikelis, A.; Markoulatos, P. (2011)The molecular characterization of two enterovirus strains (LR51A5 and LR61G3) isolated from the sewage treatment plant unit in Larissa, Greece, in May and June 2006 and the investigation of their relationship with enteroviruses ... -
Correlation between recombination junctions and RNA secondary structure elements in poliovirus Sabin strains
Dedepsidis, E.; Kyriakopoulou, Z.; Pliaka, V.; Markoulatos, P. (2010)In order to test the hypothesis that RNA structural elements promote the distribution of certain types of recombination junctions in each one of the 2C and 3D poliovirus genomic regions (Sabin 3/Sabin 2 or Sabin 1 in 2C ... -
Correlation of mutations and recombination with growth kinetics of poliovirus vaccine strains
Pliaka, V.; Kyriakopoulou, Z.; Tsakogiannis, D.; Ruether, I. G. A.; Gartzonika, C.; Levidiotou-Stefanou, S.; Krikelis, A.; Markoulatos, P. (2010)Attenuated strains of Sabin poliovirus vaccine replicate in the human gut and, in rare cases, may cause vaccine-associated paralytic poliomyelitis (VAPP). The genetic instability of Sabin strains constitutes one of the ... -
Detection of unusual mutation within the VP1 region of different re-isolates of poliovirus Sabin vaccine
Dedepsidis, E.; Karakasiliotis, I.; Paximadi, E.; Kyriakopoulou, Z.; Komiotis, D.; Markoulatos, P. (2006)In the present study, a genomic analysis of full VP1 sequence region of 15 clinical re-isolates (14 healthy vaccinees and one bone marrow tumor patient) was conducted, aiming to the identification of mutations and to the ... -
Determination of antigenic properties of vaccine derived poliovirus strains
Pliaka, V.; Achilleos, C.; Kyriakopoulou, Z.; Tsakogiannis, D.; Ruether, I. G. A.; Gartzonica, C.; Levidiotou-Stefanou, S.; Markoulatos, P. (2010)In this study, the immunity level of the southern Greek population in the 1-10-year, 11-20-year, 21-30-year and 31-40-year age groups with regard to Sabin vaccine strains and a collection of 11 recombinant and three ... -
Determination of human papillomavirus 16 physical status through E1/E6 and E2/E6 ratio analysis
Tsakogiannis, D.; Kyriakopoulou, Z.; Ruether, I. G. A.; Amoutzias, G. D.; Dimitriou, T. G.; Diamantidou, V.; Kotsovassilis, C.; Markoulatos, P. (2014)Human papillomavirus (HPV) 16 genome integration into the host chromosome is a crucial event during the life cycle of the virus and a major step towards carcinogenesis. The integration of HPV16 DNA promotes a constitutive ... -
Direct extraction and molecular characterization of enteroviruses genomes from human faecal samples
Bolanaki, E.; Kottaridi, C.; Dedepsidis, E.; Kyriakopoulou, Z.; Pliaka, V.; Pratti, A.; Levidiotou-Stefanou, S.; Markoulatos, P. (2008)Routine diagnosis of acute flaccid paralysis (AFP) is still based on classical virological procedures. Several enteroviruses serotypes are not easily isolated in cell cultures system used and routinely more than one passage ... -
Duplex Real-time PCR assay and SYBR green I melting curve analysis for molecular identification of HPV genotypes 16, 18, 31, 35, 51 and 66
Tsakogiannis, D.; Papacharalampous, M.; Toska, E.; Kyriakopoulou, Z.; Dimitriou, T. G.; Ruether, I. G. A.; Komiotis, D.; Markoulatos, P. (2015)Long-term infection with high-risk HPV genotypes is the leading cause of cervical cancer. In the present study a Duplex Real-time PCR assay was developed in order to identify HPV types 16, 18, 31, 35, 51 and 66 in three ... -
Full-Genome Sequence Analysis of a Multirecombinant Echovirus 3 Strain Isolated from Sewage in Greece
Kyriakopoulou, Z.; Dedepsidis, E.; Pliaka, V.; Tsakogiannis, D.; Pratti, A.; Levidiotou-Stefanou, S.; Markoulatos, P. (2010)An echovirus 3 (Echo3) strain (strain LR31G7) was isolated from a sewage treatment plant in Greece in 2005. Full-genome molecular, phylogenetic, and SimPlot analyses were conducted in order to reveal the evolutionary ... -
Genome analysis of two type 6 echovirus (E6) strains recovered from sewage specimens in Greece in 2006
Kyriakopoulou, Z.; Pliaka, V.; Tsakogiannis, D.; Ruether, I. G. A.; Komiotis, D.; Gartzonika, C.; Levidiotou-Stefanou, S.; Markoulatos, P. (2012)Echovirus 6 (E6) is one of the main enteroviral serotypes that was isolated from cases of aseptic meningitis and encephalitis during the last years in Greece. Two E6 (LR51A5 and LR61G3) were isolated from the sewage treatment ... -
Growth kinetic analysis of bi-recombinant poliovirus vaccine strains
Pliaka, V.; Dedepsidis, E.; Kyriakopoulou, Z.; Papadi, G.; Tsakogiannis, D.; Pratti, A.; Levidiotou-Stefanou, S.; Markoulatos, P. (2010)Attenuated strains of Sabin poliovirus vaccine replicate in the human gut and in rare cases may cause vaccine-associated paralytic poliomyelitis (VAPP). Mutations at specific sites of the genome and recombination between ... -
Identification of novel E6-E7 sequence variants of human papillomavirus 16
Tsakogiannis, D.; Kyriakopoulou, Z.; Amoutzias, G.; Ruether, I. G. A.; Dimitriou, T. G.; Panotopoulou, E.; Markoulatos, P. (2013)The rate of evolution of the human papillomavirus 16 (HPV16) genome is low. However, the ability of the E6 oncoprotein to interact with distinct p53 variants causes selective pressure on the E6 gene. In addition, intratypic ... -
Molecular and evolutionary analysis of HPV16 E6 and E7 genes in Greek women
Tsakogiannis, D.; Papadopoulou, A.; Kontostathi, G.; Ruether, I. G. A.; Kyriakopoulou, Z.; Dimitriou, T. G.; Orfanoudakis, G.; Markoulatos, P. (2013)Human papillomavirus type 16 (HPV16) non-European variants have been associated with persistent infection and cervical cancer development, while the L83V variant of the E6 gene has been correlated with the progression of ... -
Molecular and phylogenetic analysis of the HPV 16 E4 gene in cervical lesions from women in Greece
Tsakogiannis, D.; Ruether, I. G. A.; Kyriakopoulou, Z.; Pliaka, V.; Skordas, V.; Gartzonika, C.; Levidiotou-Stefanou, S.; Markoulatos, P. (2012)The HPV16 E1(a )E4 protein is thought to contribute to the release of newly formed viral particles from infected epithelia. In order to investigate amino acid mutations in the HPV16 E1(a )E4 protein, the complete E4 ORF ... -
Molecular characterization of a new intergenotype Norovirus GII recombinant
Ruether, I. G. A.; Tsakogiannis, D.; Pliaka, V.; Kyriakopoulou, Z.; Krikelis, A.; Gartzonika, C.; Leveidiotou-Stefanou, S.; Markoulatos, P. (2012)Human noroviruses (NoVs) of the Caliciviridae family are a major cause of epidemic gastroenteritis. The NoV genus is genetically diverse and recombination of viral RNA is known to depend upon various immunological and ... -
Molecular characterization of wild-type polioviruses isolated in Greece during the 1996 outbreak in Albania
Kyriakopoulou, Z.; Kottaridi, C.; Dedepsidis, E.; Bolanaki, E.; Levidiotou-Stefanou, S.; Markoulatos, P. (2006)During the present study three type 1 poliovirus strains isolated in Greece during the 1996 poliomyelitis outbreak in Albania were retrospectively investigated and determination of their relationship with other epidemic ...