1
|
Konstantopoulos G, Leventakou D, Saltiel DR, Zervoudi E, Logotheti E, Pettas S, Karagianni K, Daiou A, Hatzistergos KE, Dafou D, Arsenakis M, Kottaridi C. HPV16 E6 Oncogene Contributes to Cancer Immune Evasion by Regulating PD-L1 Expression through a miR-143/HIF-1a Pathway. Viruses 2024; 16:113. [PMID: 38257813 PMCID: PMC10819893 DOI: 10.3390/v16010113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 01/11/2024] [Indexed: 01/24/2024] Open
Abstract
Human Papillomaviruses have been associated with the occurrence of cervical cancer, the fourth most common cancer that affects women globally, while 70% of cases are caused by infection with the high-risk types HPV16 and HPV18. The integration of these viruses' oncogenes E6 and E7 into the host's genome affects a multitude of cellular functions and alters the expression of molecules. The aim of this study was to investigate how these oncogenes contribute to the expression of immune system control molecules, using cell lines with integrated HPV16 genome, before and after knocking out E6 viral gene using the CRISPR/Cas9 system, delivered with a lentiviral vector. The molecules studied are the T-cell inactivating protein PD-L1, its transcription factor HIF-1a and the latter's negative regulator, miR-143. According to our results, in the E6 knock out (E6KO) cell lines an increased expression of miR-143 was recorded, while a decrease in the expression of HIF-1a and PD-L1 was exhibited. These findings indicate that E6 protein probably plays a significant role in enabling cervical cancer cells to evade the immune system, while we propose a molecular pathway in cervical cancer, where PD-L1's expression is regulated by E6 protein through a miR-143/HIF-1a axis.
Collapse
Affiliation(s)
- Georgios Konstantopoulos
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (G.K.); (D.-R.S.); (E.L.); (S.P.); (K.K.); (K.E.H.); (D.D.); (M.A.)
| | - Danai Leventakou
- 2nd Department of Pathology, University General Hospital Attikon, School of Medicine, National and Kapodistrian University of Athens, 12462 Athens, Greece;
| | - Despoina-Rozi Saltiel
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (G.K.); (D.-R.S.); (E.L.); (S.P.); (K.K.); (K.E.H.); (D.D.); (M.A.)
| | - Efthalia Zervoudi
- Research Unit—Oncology Unit, University General Hospital Attikon, School of Medicine, National and Kapodistrian University of Athens, 12462 Athens, Greece;
| | - Eirini Logotheti
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (G.K.); (D.-R.S.); (E.L.); (S.P.); (K.K.); (K.E.H.); (D.D.); (M.A.)
| | - Spyros Pettas
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (G.K.); (D.-R.S.); (E.L.); (S.P.); (K.K.); (K.E.H.); (D.D.); (M.A.)
| | - Korina Karagianni
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (G.K.); (D.-R.S.); (E.L.); (S.P.); (K.K.); (K.E.H.); (D.D.); (M.A.)
| | - Angeliki Daiou
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (G.K.); (D.-R.S.); (E.L.); (S.P.); (K.K.); (K.E.H.); (D.D.); (M.A.)
| | - Konstantinos E. Hatzistergos
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (G.K.); (D.-R.S.); (E.L.); (S.P.); (K.K.); (K.E.H.); (D.D.); (M.A.)
| | - Dimitra Dafou
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (G.K.); (D.-R.S.); (E.L.); (S.P.); (K.K.); (K.E.H.); (D.D.); (M.A.)
| | - Minas Arsenakis
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (G.K.); (D.-R.S.); (E.L.); (S.P.); (K.K.); (K.E.H.); (D.D.); (M.A.)
| | - Christine Kottaridi
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (G.K.); (D.-R.S.); (E.L.); (S.P.); (K.K.); (K.E.H.); (D.D.); (M.A.)
| |
Collapse
|
2
|
Valasoulis G, Pouliakis A, Michail G, Magaliou I, Parthenis C, Margari N, Kottaridi C, Spathis A, Leventakou D, Ieronimaki AI, Androutsopoulos G, Panagopoulos P, Daponte A, Tsiodras S, Panayiotides IG. Cervical HPV Infections, Sexually Transmitted Bacterial Pathogens and Cytology Findings-A Molecular Epidemiology Study. Pathogens 2023; 12:1347. [PMID: 38003814 PMCID: PMC10675441 DOI: 10.3390/pathogens12111347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/23/2023] [Accepted: 11/10/2023] [Indexed: 11/26/2023] Open
Abstract
Prevalent cervical HPV infection and high-risk HPV persistence consequences have been extensively investigated in the literature; nevertheless, any causative interrelations of other sexually transmitted bacterial infections (STIs) with cervical HPV infection have not yet been fully elucidated. This study aimed to investigate the possible association of STIs with cervical cytology aberrations and HPV genotyping results in a representative sample of predominantly young Greek women. Liquid-based cytology and molecular detection for bacterial STIs and HPV as well as extended HPV genotyping were simultaneously assessed in cervical samples from 2256 individuals visiting several urban outpatient Gynecology Departments for well-woman visits or cervical screening throughout a 20-month period. All specimens were centrally processed with validated molecular assays. The mean age of the studied women was 37.0 ± 11.7 years; 722 women (33.30%) tested positive for STI (mean age 34.23 ± 10.87 years). A higher mean age (38.34 ± 11.83 years (p < 0.05)) was associated with negative STI testing. Chlamydia trachomatis was detected in 59 individuals (8.2%), Mycoplasma hominis in 156 (21.6%), Mycoplasma genitalium in 14 (1.9%), and Ureaplasma spp. in 555 (76.9%); infections with two bacterial pathogens were identified in 73 samples (10.1%). Cervical HPV was detected in 357 out of 1385 samples with a valid HPV typing result (25.8%). The mean age of HPV-positive women was 32.0 ± 8.4 years; individuals testing HPV-negative were slightly older (N = 1028): 34.4 ± 9.2 (p < 0.05). Among the 1371 individuals with valid results both for bacterial STIs and cervical HPV detection, women with an HPV-positive sample were more likely to harbor an STI (OR: 2.69, 95% CI 2.10-3.46, p < 0.05). Interestingly, bacterial STI positivity illustrated significant heterogeneity between NILM and LSIL cases, with 28.88% of NILM and 46.33% of LSIL cases harboring an STI, respectively (p < 0.05). In brief, in a population with a high prevalence for STIs, especially Ureaplasma spp., an association was documented between bacterial pathogen detection and cervical HPV infection, as well as abnormal cytology; these findings merit further investigation.
Collapse
Affiliation(s)
- George Valasoulis
- Department of Gynecology and Obstetrics, Medical School, University of Thessaly, 41500 Larisa, Greece
- Department of Midwifery, School of Health Sciences, University of Western Macedonia, 50100 Kozani, Greece
- Hellenic National Public Health Organization-ECDC, Marousi, 15123 Athens, Greece
| | - Abraham Pouliakis
- 2nd Department of Pathology, National and Kapodistrian University of Athens Medical School, “Attikon” University Hospital, 12462 Athens, Greece; (A.P.)
| | - Georgios Michail
- Department of Gynecology and Obstetrics, Medical School, University of Patras, 26504 Patras, Greece; (G.M.); (G.A.)
| | - Ioulia Magaliou
- Department of Gynecology and Obstetrics, Medical School, University of Thessaly, 41500 Larisa, Greece
- Department of Midwifery, School of Health Sciences, University of Western Macedonia, 50100 Kozani, Greece
| | - Christos Parthenis
- 3rd Department of Gynecology and Obstetrics, National and Kapodistrian University of Athens Medical School, “Attikon” University Hospital, 12462 Athens, Greece
| | - Niki Margari
- Independed Researcher—Cytopathologist, Kifissias Avenue 27A’, 11523 Athens, Greece
| | - Christine Kottaridi
- Department of Genetics, Development & Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Aris Spathis
- 2nd Department of Pathology, National and Kapodistrian University of Athens Medical School, “Attikon” University Hospital, 12462 Athens, Greece; (A.P.)
| | - Danai Leventakou
- 2nd Department of Pathology, National and Kapodistrian University of Athens Medical School, “Attikon” University Hospital, 12462 Athens, Greece; (A.P.)
| | - Argyro-Ioanna Ieronimaki
- 2nd Department of Pathology, National and Kapodistrian University of Athens Medical School, “Attikon” University Hospital, 12462 Athens, Greece; (A.P.)
| | - Georgios Androutsopoulos
- Department of Gynecology and Obstetrics, Medical School, University of Patras, 26504 Patras, Greece; (G.M.); (G.A.)
| | - Periklis Panagopoulos
- 3rd Department of Gynecology and Obstetrics, National and Kapodistrian University of Athens Medical School, “Attikon” University Hospital, 12462 Athens, Greece
| | - Alexandros Daponte
- Department of Gynecology and Obstetrics, Medical School, University of Thessaly, 41500 Larisa, Greece
| | - Sotirios Tsiodras
- 4th Department of Internal Medicine, National and Kapodistrian University of Athens Medical School, “Attikon” University Hospital, 12462 Athens, Greece
| | - Ioannis G. Panayiotides
- 2nd Department of Pathology, National and Kapodistrian University of Athens Medical School, “Attikon” University Hospital, 12462 Athens, Greece; (A.P.)
| |
Collapse
|
3
|
Pemas S, Xanthopoulou E, Terzopoulou Z, Konstantopoulos G, Bikiaris DN, Kottaridi C, Tzovaras D, Pechlivani EM. Exploration of Methodologies for Developing Antimicrobial Fused Filament Fabrication Parts. Materials (Basel) 2023; 16:6937. [PMID: 37959534 PMCID: PMC10649695 DOI: 10.3390/ma16216937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 10/19/2023] [Accepted: 10/23/2023] [Indexed: 11/15/2023]
Abstract
Composite 3D printing filaments integrating antimicrobial nanoparticles offer inherent microbial resistance, mitigating contamination and infections. Developing antimicrobial 3D-printed plastics is crucial for tailoring medical solutions, such as implants, and cutting costs when compared with metal options. Furthermore, hospital sustainability can be enhanced via on-demand 3D printing of medical tools. A PLA-based filament incorporating 5% TiO2 nanoparticles and 2% Joncryl as a chain extender was formulated to offer antimicrobial properties. Comparative analysis encompassed PLA 2% Joncryl filament and a TiO2 coating for 3D-printed specimens, evaluating mechanical and thermal properties, as well as wettability and antimicrobial characteristics. The antibacterial capability of the filaments was explored after 3D printing against Gram-positive Staphylococcus aureus (S. aureus, ATCC 25923), as well as Gram-negative Escherichia coli (E. coli, ATCC 25922), and the filaments with 5 wt.% embedded TiO2 were found to reduce the viability of both bacteria. This research aims to provide the optimal approach for antimicrobial and medical 3D printing outcomes.
Collapse
Affiliation(s)
- Sotirios Pemas
- Centre for Research and Technology Hellas, Information Technologies Institute, 6th km Charilaou-Thermi Road, 57001 Thessaloniki, Greece; (S.P.); (D.T.)
| | - Eleftheria Xanthopoulou
- Laboratory of Chemistry and Technology of Polymers and Colors, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (E.X.); (D.N.B.)
| | - Zoi Terzopoulou
- Laboratory of Chemistry and Technology of Polymers and Colors, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (E.X.); (D.N.B.)
| | - Georgios Konstantopoulos
- Laboratory of General Microbiology, Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (G.K.); (C.K.)
| | - Dimitrios N. Bikiaris
- Laboratory of Chemistry and Technology of Polymers and Colors, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (E.X.); (D.N.B.)
| | - Christine Kottaridi
- Laboratory of General Microbiology, Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (G.K.); (C.K.)
| | - Dimitrios Tzovaras
- Centre for Research and Technology Hellas, Information Technologies Institute, 6th km Charilaou-Thermi Road, 57001 Thessaloniki, Greece; (S.P.); (D.T.)
| | - Eleftheria Maria Pechlivani
- Centre for Research and Technology Hellas, Information Technologies Institute, 6th km Charilaou-Thermi Road, 57001 Thessaloniki, Greece; (S.P.); (D.T.)
| |
Collapse
|
4
|
Zygouras I, Leventakou D, Pouliakis A, Panagiotou S, Tsakogiannis D, Konstantopoulos G, Logotheti E, Samaras M, Kyriakopoulou Z, Beloukas A, Pateras IS, Delides A, Psyrri A, Panayiotides IG, Yiangou M, Kottaridi C. Human Papillomavirus 16 DNA Methylation Patterns and Investigation of Integration Status in Head and Neck Cancer Cases. Int J Mol Sci 2023; 24:14593. [PMID: 37834041 PMCID: PMC10572864 DOI: 10.3390/ijms241914593] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/26/2023] [Accepted: 09/26/2023] [Indexed: 10/15/2023] Open
Abstract
Persistent high-risk human papillomavirus (HPV) infection is a pivotal factor in the progression of cervical cancer. In recent years, an increasing interest has emerged in comprehending the influence of HPV on head and neck squamous cell carcinoma (HNSCC). Notably, it is well established that HPV-associated HNSCC show cases with distinct molecular and clinical attributes compared to HPV-negative cases. The present study delves into the epigenetic landscape of HPV16, specifically its L1 gene and untranslated region (UTR), through pyrosequencing, while the HPV16 DNA physical status was evaluated using E2/E6 ratio analysis in HPV16-positive HNSCC FFPE biopsies. Our findings reveal substantial methylation across six sites within the HPV16 L1 gene and seven sites in the UTR. Specifically, methylation percentages of two L1 CpG sites (7136, 7145) exhibit significant associations with tumor histological grade (p < 0.01), while proving concurrent methylation across multiple sites. The HPV16 DNA physical status was not correlated with the methylation of viral genome or tumor characteristics. This is the first study that examines epigenetic modifications and the HPV16 DNA physical status in Greek HNSCC patients. Our findings suggest an orchestrated epigenetic modulation among specific sites, impacting viral gene expression and intricate virus-host interactions.
Collapse
Affiliation(s)
- Ioannis Zygouras
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (I.Z.); (S.P.); (G.K.); (E.L.); (M.Y.)
| | - Danai Leventakou
- 2nd Department of Pathology, University General Hospital “Attikon”, School of Medicine, National and Kapodistrian University of Athens, 12464 Athens, Greece; (D.L.); (A.P.); (M.S.); (I.S.P.); (I.G.P.)
| | - Abraham Pouliakis
- 2nd Department of Pathology, University General Hospital “Attikon”, School of Medicine, National and Kapodistrian University of Athens, 12464 Athens, Greece; (D.L.); (A.P.); (M.S.); (I.S.P.); (I.G.P.)
| | - Styliana Panagiotou
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (I.Z.); (S.P.); (G.K.); (E.L.); (M.Y.)
| | | | - Georgios Konstantopoulos
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (I.Z.); (S.P.); (G.K.); (E.L.); (M.Y.)
| | - Eirini Logotheti
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (I.Z.); (S.P.); (G.K.); (E.L.); (M.Y.)
| | - Menelaos Samaras
- 2nd Department of Pathology, University General Hospital “Attikon”, School of Medicine, National and Kapodistrian University of Athens, 12464 Athens, Greece; (D.L.); (A.P.); (M.S.); (I.S.P.); (I.G.P.)
| | - Zaharoula Kyriakopoulou
- Department of Environment, School of Technology, University of Thessaly, Gaiopolis Campus, 41500 Larissa, Greece;
| | - Apostolos Beloukas
- Department of Biomedical Sciences, University of West Attica, 12243 Athens, Greece;
- National AIDS Reference Centre of Southern Greece, School of Public Health, University of West Attica, 11521 Athens, Greece
| | - Ioannis S. Pateras
- 2nd Department of Pathology, University General Hospital “Attikon”, School of Medicine, National and Kapodistrian University of Athens, 12464 Athens, Greece; (D.L.); (A.P.); (M.S.); (I.S.P.); (I.G.P.)
| | - Alexandros Delides
- 2nd Department of Otolaryngology, University General Hospital “Attikon”, School of Medicine, National and Kapodistrian University of Athens, 12464 Athens, Greece;
| | - Amanda Psyrri
- 2nd Department of Internal Medicine-Propaedeutic, University General Hospital “Attikon”, School of Medicine, National and Kapodistrian University of Athens, 12464 Athens, Greece;
| | - Ioannis G. Panayiotides
- 2nd Department of Pathology, University General Hospital “Attikon”, School of Medicine, National and Kapodistrian University of Athens, 12464 Athens, Greece; (D.L.); (A.P.); (M.S.); (I.S.P.); (I.G.P.)
| | - Minas Yiangou
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (I.Z.); (S.P.); (G.K.); (E.L.); (M.Y.)
| | - Christine Kottaridi
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (I.Z.); (S.P.); (G.K.); (E.L.); (M.Y.)
| |
Collapse
|
5
|
Leventakou D, Gouloumi AR, Spathis A, Pouliakis A, Koufopoulos N, Pergialiotis V, Drakakis P, Panayiotides IG, Kottaridi C. Expression profile of miRNAs computationally predicted to target PDL-1 in cervical tissues of different histology groups. Front Cell Dev Biol 2023; 11:1101041. [PMID: 36910137 PMCID: PMC9998664 DOI: 10.3389/fcell.2023.1101041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 02/09/2023] [Indexed: 03/14/2023] Open
Abstract
Background: Human papilloma virus (HPV) is considered a successful pathogen as it has the ability to evade host immune responses and establish long-term persistent infection. It has been reported that programmed death ligand 1 (PDL-1) expression is correlated with HPV-positivity and is increased with lesion progression or tumor metastasis in cervical cancer. The expression of microRNAs (miRNAs) is often deregulated in cancer, and their potential targets are affected. Methods: RNA was extracted from formalin-fixed paraffin-embedded (FFPE) cervical samples of different histological types, previously typed for the presence of HPV. A specific quantitative polymerase chain reaction (qPCR) protocol with SYBR Green was used to check for the expression of four miRNAs that were computationally predicted to target PDL-1. Results and conclusion: hsa-miR-20a-5p and hsa-miR-106b-5p showed an expression increase with the severity of the lesions, while hsa-miR-125b-5p depicted a significant decrease in its expression in cancerous samples when compared to normal samples.
Collapse
Affiliation(s)
- Danai Leventakou
- 2nd Department of Pathology, University General Hospital Attikon, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Alina-Roxani Gouloumi
- 2nd Department of Pathology, University General Hospital Attikon, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Aris Spathis
- 2nd Department of Pathology, University General Hospital Attikon, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Abraham Pouliakis
- 2nd Department of Pathology, University General Hospital Attikon, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Nektarios Koufopoulos
- 2nd Department of Pathology, University General Hospital Attikon, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Vassilios Pergialiotis
- 1st Department of Obstetrics and Gynecology, Alexandra General Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Peter Drakakis
- 3rd Department of Obstetrics and Gynecology, School of Medicine, University General Hospital Attikon, National and Kapodistrian University of Athens, Athens, Greece
| | - Ioannis G Panayiotides
- 2nd Department of Pathology, University General Hospital Attikon, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Christine Kottaridi
- 2nd Department of Pathology, University General Hospital Attikon, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece.,Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| |
Collapse
|
6
|
Tsakogiannis D, Nikolaidis M, Zagouri F, Zografos E, Kottaridi C, Kyriakopoulou Z, Tzioga L, Markoulatos P, Amoutzias GD, Bletsa G. Mutation Profile of HPV16 L1 and L2 Genes in Different Geographic Areas. Viruses 2022; 15:141. [PMID: 36680181 PMCID: PMC9867070 DOI: 10.3390/v15010141] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 12/16/2022] [Accepted: 12/19/2022] [Indexed: 01/03/2023] Open
Abstract
The causal relationship between HPV and cervical cancer in association with the high prevalence of high risk HPV genotypes led to the design of HPV vaccines based on the major capsid L1 protein. In recent years, capsid protein L2 has also become a focal point in the field of vaccine research. The present review focuses on the variability of HPV16 L1 and L2 genes, emphasizing the distribution of specific amino acid changes in the epitopes of capsid proteins. Moreover, a substantial bioinformatics analysis was conducted to describe the worldwide distribution of amino acid substitutions throughout HPV16 L1, L2 proteins. Five amino acid changes (T176N, N181T; EF loop), (T266A; FG loop), (T353P, T389S; HI loop) are frequently observed in the L1 hypervariable surface loops, while two amino acid substitutions (D43E, S122P) are adjacent to L2 specific epitopes. These changes have a high prevalence in certain geographic regions. The present review suggests that the extensive analysis of the amino acid substitutions in the HPV16 L1 immunodominant loops may provide insights concerning the ability of the virus in evading host immune response in certain populations. The genetic variability of the HPV16 L1 and L2 epitopes should be extensively analyzed in a given population.
Collapse
Affiliation(s)
| | - Marios Nikolaidis
- Bioinformatics Laboratory, Department of Biochemistry and Biotechnology, University of Thessaly, 41500 Larissa, Greece
| | - Flora Zagouri
- Department of Clinical Therapeutics, Alexandra Hospital, National and Kapodistrian University of Athens School of Medicine, 11528 Athens, Greece
| | - Eleni Zografos
- Department of Clinical Therapeutics, Alexandra Hospital, National and Kapodistrian University of Athens School of Medicine, 11528 Athens, Greece
| | - Christine Kottaridi
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Zaharoula Kyriakopoulou
- Department of Environment, School of Technology, University of Thessaly, Gaiopolis, 41500 Larissa, Greece
| | - Lamprini Tzioga
- Research Center, Hellenic Anticancer Institute, 10680 Athens, Greece
| | | | - Grigoris D. Amoutzias
- Bioinformatics Laboratory, Department of Biochemistry and Biotechnology, University of Thessaly, 41500 Larissa, Greece
| | - Garyfalia Bletsa
- Research Center, Hellenic Anticancer Institute, 10680 Athens, Greece
| |
Collapse
|
7
|
Bampali M, Konstantinidis K, Kellis EE, Pouni T, Mitroulis I, Kottaridi C, Mathioudakis AG, Beloukas A, Karakasiliotis I. West Nile Disease Symptoms and Comorbidities: A Systematic Review and Analysis of Cases. Trop Med Infect Dis 2022; 7:tropicalmed7090236. [PMID: 36136647 PMCID: PMC9506265 DOI: 10.3390/tropicalmed7090236] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/31/2022] [Accepted: 09/02/2022] [Indexed: 11/25/2022] Open
Abstract
West Nile virus (WNV) is a mosquito-borne flavivirus that has emerged as a major cause of viral encephalitis and meningitis, rarely leading to death. Several risk factors have been discussed in the past concerning the severity of the disease, while few reports have focused on precipitating conditions that determine of WNV-related death. Studies on cohorts of patients suffering of West Nile disease (WND) usually encompass low numbers of deceased patients as a result of the rarity of the event. In this systematic review and critical analysis of 428 published case studies and case series, we sought to evaluate and highlight critical parameters of WND-related death. We summarized the symptoms, comorbidities, and treatment strategies related to WND in all published cases of patients that included clinical features. Symptoms such as altered mental status and renal problems presented increased incidence among deceased patients, while these patients presented increased cerebrospinal fluid (CSF) glucose. Our analysis also highlights underestimated comorbidities such as pulmonary disease to act as precipitating conditions in WND, as they were significantly increased amongst deceased patients. CSF glucose and the role of pulmonary diseases need to be revaluated either retrospectively or prospectively in WND patient cohorts, as they may be linked to increased mortality risk.
Collapse
Affiliation(s)
- Maria Bampali
- Laboratory of Biology, Department of Medicine, Democritus University of Thrace, 68100 Alexandroupolis, Greece
| | - Konstantinos Konstantinidis
- Laboratory of Biology, Department of Medicine, Democritus University of Thrace, 68100 Alexandroupolis, Greece
| | - Emmanouil E. Kellis
- Laboratory of Biology, Department of Medicine, Democritus University of Thrace, 68100 Alexandroupolis, Greece
| | - Theodoti Pouni
- Laboratory of Biology, Department of Medicine, Democritus University of Thrace, 68100 Alexandroupolis, Greece
| | - Ioannis Mitroulis
- First Department of Internal Medicine, Democritus University of Thrace, University General Hospital of Alexandroupolis, 68100 Alexandroupolis, Greece
| | - Christine Kottaridi
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Alexander G. Mathioudakis
- Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences, The University of Manchester, Manchester Academic Health Science Centre, Manchester M23 9LT, UK
- The North West Lung Centre, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester M23 9LT, UK
| | - Apostolos Beloukas
- Molecular Microbiology & Immunology Lab, Department of Biomedical Sciences, University of West Attica, 12243 Athens, Greece
- National AIDS Reference Centre of Southern Greece, Department of Public Health Policy, University of West Attica, 11521 Athens, Greece
- Correspondence: (A.B.); (I.K.)
| | - Ioannis Karakasiliotis
- Laboratory of Biology, Department of Medicine, Democritus University of Thrace, 68100 Alexandroupolis, Greece
- Correspondence: (A.B.); (I.K.)
| |
Collapse
|
8
|
Kottaridi C, Resta P, Leventakou D, Gioti K, Zygouras I, Gouloumi AR, Sakagiannis G, Alzahrani KJ, Venetikou MS, Anthouli-Anagnostopoulou F, Beloukas A. The T350G Variation of Human Papillomavirus 16 E6 Gene Prevails in Oropharyngeal Cancer from a Small Cohort of Greek Patients. Viruses 2022; 14:v14081724. [PMID: 36016346 PMCID: PMC9415711 DOI: 10.3390/v14081724] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 08/02/2022] [Accepted: 08/02/2022] [Indexed: 12/04/2022] Open
Abstract
Recent trends have shown a dramatic rise in the incidence of oropharyngeal squamous cell carcinoma strongly associated with high-risk human papillomavirus (HPV) of type 16. The genetic variability of HPV16 has been extensively studied in cervical cancer but there are very limited published data concerning the genetic variations of this HPV type in oropharyngeal cancer. In the present study, the genetic variations of HPV16 E6 gene sequences originated from a small cohort of Greek patients diagnosed with oropharyngeal cancer were assessed. The vast majority of the sequences clustered within the European variant branch. The T350G variation was found to be the predominant one. This finding may indicate the need for further studies that could explain the possible impact of this variant in the pathomechanisms of oropharyngeal cancer.
Collapse
Affiliation(s)
- Christine Kottaridi
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Correspondence: (C.K.); (A.B.)
| | - Panagiota Resta
- Department of Biomedical Sciences, University of West Attica, 122 43 Athens, Greece
- National AIDS Reference Centre of Southern Greece, Department of Public Health Policy, University of West Attica, 115 21 Athens, Greece
| | - Danai Leventakou
- 2nd Department of Pathology, University Hospital Attikon, School of Medicine, National and Kapodistrian University of Athens, 124 62 Athens, Greece
| | - Katerina Gioti
- Department of Biomedical Sciences, University of West Attica, 122 43 Athens, Greece
| | - Ioannis Zygouras
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Alina-Roxani Gouloumi
- 2nd Department of Pathology, University Hospital Attikon, School of Medicine, National and Kapodistrian University of Athens, 124 62 Athens, Greece
| | | | - Khalid J. Alzahrani
- Department of Clinical Laboratories Sciences, College of Applied Medical Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Maria S. Venetikou
- Department of Biomedical Sciences, University of West Attica, 122 43 Athens, Greece
| | | | - Apostolos Beloukas
- Department of Biomedical Sciences, University of West Attica, 122 43 Athens, Greece
- National AIDS Reference Centre of Southern Greece, Department of Public Health Policy, University of West Attica, 115 21 Athens, Greece
- Correspondence: (C.K.); (A.B.)
| |
Collapse
|
9
|
Gioti K, Kottaridi C, Voyiatzaki C, Chaniotis D, Rampias T, Beloukas A. Animal Coronaviruses Induced Apoptosis. Life (Basel) 2021; 11:life11030185. [PMID: 33652685 PMCID: PMC7996831 DOI: 10.3390/life11030185] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/21/2021] [Accepted: 02/22/2021] [Indexed: 02/06/2023] Open
Abstract
Apoptosis is a form of programmed death that has also been observed in cells infected by several viruses. It is considered one of the most critical innate immune mechanisms that limits pathogen proliferation and propagation before the initiation of the adaptive immune response. Recent studies investigating the cellular responses to SARS-CoV and SARS-CoV-2 infection have revealed that coronaviruses can alter cellular homeostasis and promote cell death, providing evidence that the modulation of apoptotic pathways is important for viral replication and propagation. Despite the genetic diversity among different coronavirus clades and the infection of different cell types and several hosts, research studies in animal coronaviruses indicate that apoptosis in host cells is induced by common molecular mechanisms and apoptotic pathways. We summarize and critically review current knowledge on the molecular aspects of cell-death regulation during animal coronaviruses infection and the viral–host interactions to this process. Future research is expected to lead to a better understanding of the regulation of cell death during coronavirus infection. Moreover, investigating the role of viral proteins in this process will help us to identify novel antiviral targets related to apoptotic signaling pathways.
Collapse
Affiliation(s)
- Katerina Gioti
- Department of Biomedical Sciences, University of West Attica, 12243 Athens, Greece; (K.G.); (C.K.); (C.V.); (D.C.)
| | - Christine Kottaridi
- Department of Biomedical Sciences, University of West Attica, 12243 Athens, Greece; (K.G.); (C.K.); (C.V.); (D.C.)
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Chrysa Voyiatzaki
- Department of Biomedical Sciences, University of West Attica, 12243 Athens, Greece; (K.G.); (C.K.); (C.V.); (D.C.)
| | - Dimitrios Chaniotis
- Department of Biomedical Sciences, University of West Attica, 12243 Athens, Greece; (K.G.); (C.K.); (C.V.); (D.C.)
| | - Theodoros Rampias
- Biomedical Research Foundation of the Academy of Athens, Basic Research Center, 11527 Athens, Greece
- Correspondence: (T.R.); (A.B.)
| | - Apostolos Beloukas
- Department of Biomedical Sciences, University of West Attica, 12243 Athens, Greece; (K.G.); (C.K.); (C.V.); (D.C.)
- Institute of Infection & Global Health, University of Liverpool, Liverpool L69 7BE, UK
- Correspondence: (T.R.); (A.B.)
| |
Collapse
|
10
|
Daskou M, Tsakogiannis D, Alexopoulou DS, Dimitriou TG, Mossialos D, Amoutzias GD, Kottaridi C, Markoulatos P. A colorimetric IsoPCR for the rapid and sensitive visual detection of high-risk HPV16 in clinical samples with hydroxynaphthol blue. J Virol Methods 2021; 290:114072. [PMID: 33485938 DOI: 10.1016/j.jviromet.2021.114072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 11/04/2020] [Accepted: 01/16/2021] [Indexed: 01/06/2023]
Abstract
HPV16 infection is found in more than 50 % of cervical cancer cases worldwide, triggering the development of numerous molecular techniques for viral diagnosis. The present study focuses on the development of a colorimetric IsoPCR for HPV16 DNA detection. The methodology combines the advantages of PCR and LAMP, while the most significant aspect of the new established methodology is the visual detection of amplification products through hydroxynapthol blue dye, thus minimizing the time and labor needed. An experimental cut-off value was tested through reconstitution experiments, while the specificity was evaluated by assessing clinical samples. The analytical sensitivity of the new colorimetric IsoPCR was found to be 0.1 viral DNA copy per reaction, while the specificity was 100 % for the detection of HPV16 DNA. The assay enabled the amplification of viral DNA in cases with viral load lower than 1 copy. In conclusion, the new established colorimetric IsoPCR can be regarded as an attractive molecular tool that facilitates the specific, rapid and highly sensitive visual detection of HPV16 DNA even at the very early stages of viral infection.
Collapse
Affiliation(s)
- M Daskou
- University of Thessaly, School of Health Sciences, Department of Biochemistry & Biotechnology, Microbiology-Virology Laboratory, Biopolis, 41500, Larissa, Greece
| | - D Tsakogiannis
- University of Thessaly, School of Health Sciences, Department of Biochemistry & Biotechnology, Microbiology-Virology Laboratory, Biopolis, 41500, Larissa, Greece.
| | - D S Alexopoulou
- University of Thessaly, School of Health Sciences, Department of Biochemistry & Biotechnology, Microbiology-Virology Laboratory, Biopolis, 41500, Larissa, Greece
| | - T G Dimitriou
- University of Thessaly, School of Health Sciences, Department of Biochemistry & Biotechnology, Microbiology-Virology Laboratory, Biopolis, 41500, Larissa, Greece
| | - D Mossialos
- University of Thessaly, School of Health Sciences, Department of Biochemistry & Biotechnology, Microbiology-Virology Laboratory, Biopolis, 41500, Larissa, Greece
| | - G D Amoutzias
- Bioinformatics Laboratory, University of Thessaly, School of Health Sciences, Department of Biochemistry & Biotechnology, Biopolis, Larissa, Greece
| | - C Kottaridi
- Second Department of Pathology, Attikon University Hospital, National and Kapodistrian University of Athens, Chaidari, Athens, 12462, Greece; Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, GR, 54124, Greece
| | - P Markoulatos
- University of Thessaly, School of Health Sciences, Department of Biochemistry & Biotechnology, Microbiology-Virology Laboratory, Biopolis, 41500, Larissa, Greece
| |
Collapse
|
11
|
Tomos I, Karakatsani A, Manali ED, Kottaridi C, Spathis A, Argentos S, Papiris SA. Telomere length across different UIP fibrotic-Interstitial Lung Diseases: a prospective Greek case-control study. Pulmonology 2020; 28:254-261. [PMID: 33358512 DOI: 10.1016/j.pulmoe.2020.11.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 11/01/2020] [Accepted: 11/01/2020] [Indexed: 10/22/2022] Open
Abstract
INTRODUCTION Short telomeres are recognized as risk factor for idiopathic pulmonary fibrosis (IPF). We aimed to assess the role of telomere length (TL) in fibrotic-Interstitial Lung Diseases (f-ILDs) associated with a usual interstitial pneumonia (UIP) pattern as well as in IPF acute exacerbation (IPF-AE). AIM AND METHODS TL was measured from peripheral white blood cells using a multiplex quantitative polymerase chain reaction in consecutive patients with f-ILDs, all presenting UIP pattern in the high-resolution chest-computed-tomography and compared to age-matched healthy controls. RESULTS Seventy-nine individuals were included (mean age 69.77 ± 0.72 years); 24 stable IPF, 18 IPF-AE, 10 combined pulmonary fibrosis and emphysema, 7 Rheumatoid arthritis-UIP-ILDs and 20 controls. TL in all patients was significantly shorter compared to controls [mean T/S ratio (SE) 0.77 (±0.05) vs 2.26 (±0.36), p < 0.001] as well as separately in each one of f-ILD subgroups. IPF-AE patients presented significantly shorter TL compared to stable IPF (p = 0.029). Patients with IPF and shorter than the median TL (0-0.72) showed reduced overall survival (p = 0.004). T/S < 0.72 was associated with increased risk for IPF-AE (OR = 30.787, 95% CI: 2.153, 440.183, p = 0.012) independent of age, gender, smoking and lung function impairment. A protective effect of TL was observed, as it was inversely associated with risk of death both in UIP-f-ILDs (HR = 0.174, 95%CI: 0.036, 0.846, p = 0.030) and IPF patients (HR = 0.096, 95%CI: 0.011, 0.849, p = 0.035). CONCLUSIONS Shorter TL characterizes different UIP f-ILDs. Although no difference was observed in TL among diverse UIP subgroups, IPF-AE presented shorter TL compared to stable IPF. Reduced overall survival and higher hazard ratio of death are associated with shorter TL in IPF.
Collapse
Affiliation(s)
- I Tomos
- 2nd Pulmonary Medicine Department, "ATTIKON" University Hospital, National and Kapodistrian University of Athens, Greece.
| | - A Karakatsani
- 2nd Pulmonary Medicine Department, "ATTIKON" University Hospital, National and Kapodistrian University of Athens, Greece.
| | - E D Manali
- 2nd Pulmonary Medicine Department, "ATTIKON" University Hospital, National and Kapodistrian University of Athens, Greece.
| | - C Kottaridi
- 2nd Department of Cytopathology, "ATTIKON" University Hospital, National and Kapodistrian University of Athens, Greece.
| | - A Spathis
- 2nd Department of Cytopathology, "ATTIKON" University Hospital, National and Kapodistrian University of Athens, Greece.
| | - S Argentos
- 2nd Department of Radiology, "ATTIKON" University Hospital, National and Kapodistrian University of Athens, Greece.
| | - S A Papiris
- 2nd Pulmonary Medicine Department, "ATTIKON" University Hospital, National and Kapodistrian University of Athens, Greece.
| |
Collapse
|
12
|
Papageorgiou SG, Divane A, Roumelioti M, Kottaridi C, Bouchla A, Georgakopoulos A, Ieremiadou F, Daraki A, Bazani E, Thomopoulos TP, Chatziioannou S, Mavrogenis A, Panayiotidis P, Panayiotides IG, Pappa V, Foukas PG. Erdheim-Chester Disease and Acute Myeloid Leukemia with Mutated NPM1 in a Patient with Clonal Hematopoiesis: A Case Report. Onco Targets Ther 2020; 13:11689-11695. [PMID: 33235460 PMCID: PMC7678692 DOI: 10.2147/ott.s276497] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 09/20/2020] [Indexed: 12/02/2022] Open
Abstract
Background Erdheim–Chester Disease (ECD) is a clonal non-Langerhans histiocytosis, classified as a macrophage-dendritic cell neoplasm in the 2016 WHO classification. The exact cell of origin of ECD is unknown, although some limited evidence suggests that it arises from myeloid progenitors. Case Presentation A 43-year-old patient, diagnosed with BRAFV600E mutated ECD, developed NPM1+/FLT3+ acute myeloid leukemia (AML) with wild-type BRAF, 15 months after the initial ECD diagnosis. The patient received intensive chemotherapy plus midostaurin, followed by midostaurin maintenance. Six months into maintenance, the patient remains in complete remission with low-level measurable residual disease, whereas ECD shows a sustained partial metabolic response. Molecular karyotype at several distinct timepoints, namely ECD diagnosis, AML diagnosis, and following treatment of AML, highlighted a molecular signature, indicative of a persistent, underlying clonal hematopoiesis. Conclusion This case report suggests that ECD and AML might represent an expansion of two distinct clones in a background of clonal hematopoiesis, indicating their shared origin. Moreover, molecular karyotype might serve as a strong, inexpensive tool for revealing clonal hematopoiesis in cases of negative targeted next-generation sequencing. Finally, the moderate response of ECD to midostaurin suggests that kinase inhibition might have a potential role in ECD treatment.
Collapse
Affiliation(s)
- Sotirios G Papageorgiou
- 2nd Department of Internal Medicine and Research Unit, Hematology Unit, University General Hospital "Attikon", Haidari, Athens, Greece
| | - Aspasia Divane
- "LIFE CODE" Private Diagnostic Laboratory, Medical Ltd., Athens, Greece
| | - Maria Roumelioti
- 1st Department of Propaedeutic Medicine, Laikon General Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Christine Kottaridi
- 2nd Department of Pathology, National and Kapodistrian University of Athens, Medical School, University General Hospital "Attikon", Haidari, Athens, Greece
| | - Anthi Bouchla
- 2nd Department of Internal Medicine and Research Unit, Hematology Unit, University General Hospital "Attikon", Haidari, Athens, Greece
| | - Alexandros Georgakopoulos
- 2nd Department of Radiology, Nuclear Medicine Section, National and Kapodistrian University of Athens, University General Hospital "Attikon", Haidari, Athens, Greece
| | - Fotini Ieremiadou
- "LIFE CODE" Private Diagnostic Laboratory, Medical Ltd., Athens, Greece
| | - Aggeliki Daraki
- "LIFE CODE" Private Diagnostic Laboratory, Medical Ltd., Athens, Greece
| | - Efthymia Bazani
- 2nd Department of Internal Medicine and Research Unit, Hematology Unit, University General Hospital "Attikon", Haidari, Athens, Greece
| | - Thomas P Thomopoulos
- 2nd Department of Internal Medicine and Research Unit, Hematology Unit, University General Hospital "Attikon", Haidari, Athens, Greece
| | - Sofia Chatziioannou
- 2nd Department of Radiology, Nuclear Medicine Section, National and Kapodistrian University of Athens, University General Hospital "Attikon", Haidari, Athens, Greece.,Nuclear Medicine Section, Biomedical Research Foundation Academy of Athens, BRFAA, Athens, Greece
| | - Andreas Mavrogenis
- 1st Department of Orthopaedics, National and Kapodistrian University of Athens, School of Medicine, University General Hospital "Attikon", Haidari, Athens, Greece
| | - Panayiotis Panayiotidis
- 1st Department of Propaedeutic Medicine, Laikon General Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Ioannis G Panayiotides
- 2nd Department of Pathology, National and Kapodistrian University of Athens, Medical School, University General Hospital "Attikon", Haidari, Athens, Greece
| | - Vasiliki Pappa
- 2nd Department of Internal Medicine and Research Unit, Hematology Unit, University General Hospital "Attikon", Haidari, Athens, Greece
| | - Periklis G Foukas
- 2nd Department of Pathology, National and Kapodistrian University of Athens, Medical School, University General Hospital "Attikon", Haidari, Athens, Greece
| |
Collapse
|
13
|
Valasoulis G, Pouliakis A, Michail G, Kottaridi C, Spathis A, Kyrgiou M, Paraskevaidis E, Daponte A. Alterations of HPV-Related Biomarkers after Prophylactic HPV Vaccination. A Prospective Pilot Observational Study in Greek Women. Cancers (Basel) 2020; 12:cancers12051164. [PMID: 32380733 PMCID: PMC7281708 DOI: 10.3390/cancers12051164] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 04/26/2020] [Accepted: 05/02/2020] [Indexed: 12/16/2022] Open
Abstract
The objective of this study was to investigate the hypothesis that HPV vaccination administered in patients with low-grade (LG) cytology shortly after an initial colposcopic assessment could prospectively alter HPV-related biomarkers. This was a prospective pilot observational study involving women attending a colposcopy clinic for evaluation of abnormal LG cytology that were advised to undergo HPV vaccination and proceeded accordingly. These women were compared with a matched unvaccinated group. Women requiring cervical biopsies or CIN treatment were excluded. Intervention: A full three-dose HPV vaccination was undertaken with either the 2-valent or the 4-valent anti-HPV VLP vaccine. LBC samples were obtained prior and after the completion of the vaccination regimen and tested for HPV DNA genotyping (CLART-2 HPV test) and E6 and E7 mRNA (NASBA technique). Results: Alterations of HPV-related biomarkers at a colposcopy reassessment appointment 12 months later. Analysis: The p-values, relative risk (RR), absolute relative risk (ARR), number needed to treat (NNT) and 95% confidence intervals for each biomarker in each group were assessed. Results: A total of 309 women were included in the analysis. One hundred fifty-two women received the vaccine. HPV vaccination reduced in a statistically significant manner (p < 0.05) HPV DNA positivity rates for genotypes 16, 18, and 31, RR = 1.6 (95% CI: 1.1 to 2.3), RR = 1.7 (95% CI: 1.1 to 2.8), and RR = 1.8 (95% CI: 1.0 to 2.9), in women who only tested DNA-positive for HPV16, 18, and 31 genotypes, respectively, prior to vaccination. A less pronounced, statistically insignificant reduction was shown for women who tested positive for both HPV DNA and mRNA E6 and E7 expression for HPV16, 18, and 33 subtypes. Statistically significant reduction in HPV mRNA positivity was solely documented for genotype 31 (p = 0.0411). Conclusions: HPV vaccination appears to significantly affect the rates of HPV16, 18, and 31 DNA-positive infections in the population testing HPV DNA-positive for the aforementioned genotypes. The above findings deserve verification in larger cohorts.
Collapse
Affiliation(s)
- George Valasoulis
- Department of Obstetrics & Gynaecology, University Hospital of Larisa, Mezourlo, 41334 Larisa, Greece;
- Hellenic National Public Health Organization-ECDC, Marousi, 15123 Athens, Greece
- Correspondence: ; Tel.: +30-6946-308-060
| | - Abraham Pouliakis
- Second Department of Pathology, Attikon University Hospital, National and Kapodistrian University of Athens, Chaidari, 12462 Athens, Greece; (A.P.); (C.K.); (A.S.)
| | - George Michail
- Department of Obstetrics & Gynaecology, University Hospital of Patras, Rio, 26504 Patras, Greece;
| | - Christine Kottaridi
- Second Department of Pathology, Attikon University Hospital, National and Kapodistrian University of Athens, Chaidari, 12462 Athens, Greece; (A.P.); (C.K.); (A.S.)
| | - Aris Spathis
- Second Department of Pathology, Attikon University Hospital, National and Kapodistrian University of Athens, Chaidari, 12462 Athens, Greece; (A.P.); (C.K.); (A.S.)
| | - Maria Kyrgiou
- West London Gynaecological Cancer Center, Department of Obstetrics & Gynaecology, Queen Charlotte’s and Chelsea Hospital, Hammersmith Hospital, London W120HS, UK;
| | - Evangelos Paraskevaidis
- Department of Obstetrics & Gynaecology, University Hospital of Ioannina, Neochoropoulo, 45500 Ioannina, Greece;
| | - Alexandros Daponte
- Department of Obstetrics & Gynaecology, University Hospital of Larisa, Mezourlo, 41334 Larisa, Greece;
| |
Collapse
|
14
|
Kottaridi C, Leventakou D, Pouliakis A, Pergialiotis V, Chrelias G, Patsouri E, Zacharatou A, Panopoulou E, Damaskou V, Sioulas V, Chrelias C, Kalantaridou S, Panayiotides IG. Searching HPV genome for methylation sites involved in molecular progression to cervical precancer. J Cancer 2019; 10:4588-4595. [PMID: 31528222 PMCID: PMC6746133 DOI: 10.7150/jca.30081] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 05/08/2019] [Indexed: 02/07/2023] Open
Abstract
Background: Human Papilloma Virus has been considered as the main cause for cervical cancer. In this study we investigated epigenetic changes and especially methylation of specific sites of HPV genome. The main goal was to correlate methylation status with histological grade as well as to determine its accuracy in predicting the disease severity by establishing optimum methylation cutoffs. Methods: In total, sections from 145 cases genotyped as HPV16 were obtained from formalin- fixed, paraffin-embedded tissue of cervical biopsies, conization or hysterectomy specimens. Highly accurate pyrosequencing of bisulfite converted DNA, was used to quantify the methylation percentages of UTR promoter, enhancer and 5' UTR, E6 CpGs 494, 502, 506 and E7 CpGs 765, 780, 790. The samples were separated in different groupings based on the histological outcome. Statistical analysis was performed by SAS 9.4 for Windows and methylation cutoffs were identified by MATLAB programming language. Results: The most important methylation sites were at the enhancer and especially UTR 7535 and 7553 sites. Specifically for CIN3+ (i.e. HSIL or SCC) discrimination, a balanced sensitivity vs. specificity (68.1%, 66.2% respectively) with positive predictive value (PPV) and negative predictive value (NPV) (66.2%, 68.2% respectively) was achieved for UTR 7535 methylation of 6.1% cutoff with overall accuracy 67.1%, while for UTR 7553 a sensitivity 60.9%, specificity 69.0%, PPV=65.6%, NPV=64.5% and overall accuracy=65.0% at threshold 10.1% was observed. Conclusion: Viral HPV16 genome was found methylated in NF-1 binding sites of UTR in cases with high grade disease. Methylation percentages of E6 and E7 CpG sites were elevated at the cancer group.
Collapse
Affiliation(s)
- Christine Kottaridi
- 2 nd Department of Pathology, University General Hospital "ATTIKON", School of Medicine, National and Kapodistrian University of Athens, Athens 12464, Greece
| | - Danai Leventakou
- 2 nd Department of Pathology, University General Hospital "ATTIKON", School of Medicine, National and Kapodistrian University of Athens, Athens 12464, Greece
| | - Abraham Pouliakis
- 2 nd Department of Pathology, University General Hospital "ATTIKON", School of Medicine, National and Kapodistrian University of Athens, Athens 12464, Greece
| | - Vasileios Pergialiotis
- 3 rd Department of Gynaecology and Obstetrics, University General Hospital "ATTIKON", School of Medicine, National and Kapodistrian University of Athens, Athens 12464, Greece
| | - George Chrelias
- 3 rd Department of Gynaecology and Obstetrics, University General Hospital "ATTIKON", School of Medicine, National and Kapodistrian University of Athens, Athens 12464, Greece
| | - Eugenia Patsouri
- 2 nd Department of Pathology, University General Hospital "ATTIKON", School of Medicine, National and Kapodistrian University of Athens, Athens 12464, Greece
| | - Andriani Zacharatou
- 2 nd Department of Pathology, University General Hospital "ATTIKON", School of Medicine, National and Kapodistrian University of Athens, Athens 12464, Greece
| | - Eleni Panopoulou
- 2 nd Department of Pathology, University General Hospital "ATTIKON", School of Medicine, National and Kapodistrian University of Athens, Athens 12464, Greece
| | - Vasileia Damaskou
- 2 nd Department of Pathology, University General Hospital "ATTIKON", School of Medicine, National and Kapodistrian University of Athens, Athens 12464, Greece
| | - Vasileios Sioulas
- 3 rd Department of Gynaecology and Obstetrics, University General Hospital "ATTIKON", School of Medicine, National and Kapodistrian University of Athens, Athens 12464, Greece
| | - Charalambos Chrelias
- 3 rd Department of Gynaecology and Obstetrics, University General Hospital "ATTIKON", School of Medicine, National and Kapodistrian University of Athens, Athens 12464, Greece
| | - Sofia Kalantaridou
- 3 rd Department of Gynaecology and Obstetrics, University General Hospital "ATTIKON", School of Medicine, National and Kapodistrian University of Athens, Athens 12464, Greece
| | - Ioannis G Panayiotides
- 2 nd Department of Pathology, University General Hospital "ATTIKON", School of Medicine, National and Kapodistrian University of Athens, Athens 12464, Greece
| |
Collapse
|
15
|
Antalis E, Spathis A, Kottaridi C, Kossyvakis A, Pastellas K, Tsakalos K, Mentis A, Kroupis C, Tsiodras S. Th17 serum cytokines in relation to laboratory-confirmed respiratory viral infection: A pilot study. J Med Virol 2019; 91:963-971. [PMID: 30715745 PMCID: PMC7166444 DOI: 10.1002/jmv.25406] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 12/10/2018] [Accepted: 01/11/2019] [Indexed: 01/05/2023]
Abstract
BACKGROUND Th17 cytokines are associated with modulation of inflammation and may be beneficial in clearing influenza infection in experimental models. The Th17 cytokine profile was evaluated in a pilot study of respiratory virus infections. METHODS Consecutive patients with symptoms of respiratory tract infection visiting the emergency department of a tertiary care hospital during the winter influenza season of 2014 to 2015 were evaluated. CLART PneumoVir kit, (GENOMICA, Madrid, Spain) was used for viral detection of all known respiratory viruses. Th17 cytokine profile was evaluated with the MILLIPLEX MAP Human TH17 Magnetic Bead Panel (Millipore Corp., Billerica, MA). Correlation of the TH17 profile with viral detection was performed with univariate and multivariate analysis. RESULTS Seventy-six patients were evaluated (median age 56 years, 51.3% female); a respiratory virus was identified in 60 (78.9%) patients; 45% had confirmed influenza. Influenza A (H3N2) correlated with higher levels of granulocyte-macrophage colony-stimulating factor (GM-CSF), interleukin 1β (IL-1β), IL-17A, IL-17E, IL-17F, IL-21, IL-22, and IL-23 (P < 0.05 by analysis of variance [ANOVA]) compared with respiratory syncytial virus (RSV). Parainfluenza virus (PIV) similarly had higher levels of GM-CSF, IL-1b, IL-17A, IL-22 compared with those detected in RSV, influenza B and any other virus infection ( P < 0.05; ANOVA). Increasing age (β-coefficient = 1.11, 95% CI, 1.04-1.2, P < 0.01) as well as IL-17A levels (β-coefficient = 1.03, 95% CI, 1.001-1.05, P = 0.04) predicted hospital admission. CONCLUSION Main Th17 cell effector cytokines were upregulated in laboratory-confirmed A(H3N2) influenza and PIV. Excessive amounts of Th17 cytokines may be implicated in the pathogenesis and immune control of acute influenza and PIV infection in humans and may predict the severity of disease.
Collapse
Affiliation(s)
- Emmanouil Antalis
- 4th Department of Internal MedicineUniversity of Athens Medical SchoolAthensGreece
| | - Aris Spathis
- 2nd Department of PathologyUniversity of Athens Medical SchoolAthensGreece
| | | | - Athanasios Kossyvakis
- National Influenza Reference Laboratory for Southern Greece, Hellenic Pasteur InstituteAthensGreece
| | - Kalliopi Pastellas
- 4th Department of Internal MedicineUniversity of Athens Medical SchoolAthensGreece
| | | | - Andreas Mentis
- National Influenza Reference Laboratory for Southern Greece, Hellenic Pasteur InstituteAthensGreece
| | - Christos Kroupis
- Department of Clinical BiochemistryUniversity of Athens Medical SchoolAthensGreece
| | - Sotirios Tsiodras
- 4th Department of Internal MedicineUniversity of Athens Medical SchoolAthensGreece
| |
Collapse
|
16
|
Daskou M, Tsakogiannis D, Dimitriou T, Manali M, Apti C, Amoutzias G, Mossialos D, Kottaridi C, Markoulatos P. Α 2-stage, nested-like nucleic acid amplification method (IsoPCR) for the highly sensitive detection of HPV16 and HPV18 DNA. Mol Cell Probes 2019; 45:1-7. [DOI: 10.1016/j.mcp.2019.03.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 01/20/2019] [Accepted: 03/14/2019] [Indexed: 10/27/2022]
|
17
|
Douros K, Kotzia D, Kottaridi C, Giotas A, Boutopoulou B, Bozas E, Matziou V, Priftis K, Papaevangelou V. Evidence for respiratory viruses interactions in asymptomatic preschool-aged children. Allergol Immunopathol (Madr) 2019; 47:260-264. [PMID: 30454860 PMCID: PMC7126143 DOI: 10.1016/j.aller.2018.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 07/22/2018] [Accepted: 07/24/2018] [Indexed: 11/16/2022]
Abstract
Aim To prospectively evaluate interferences between viruses of the upper respiratory tract in asymptomatic preschool children. Methods Nasal-pharyngeal swabs from 233 preschool aged children were prospectively collected over four consecutive time periods, during one school year. The samples were tested using a RT-PCR DNA/RNA microarray system for nine respiratory viruses. Results Respiratory syncytial virus (RSV) was a predictor of the presence of influenza virus (INFL) (OR: 9.12, CI: 1.52–54.75, p = 0.016), and similarly, INFL predicted the presence of RSV (OR: 4.01, CI: 1.14–14.16, p = 0.030). Also, rhinovirus (RV) was a predictor of adenovirus (ADV) presence (OR: 3.66, CI: 1.10–12.14, p = 0.034), and similarly, ADV predicted the presence of RV (OR: 4.05, CI: 1.02–16.05, p = 0.046). No other significant associations between viruses were observed. Conclusion Our results indicate that respiratory viruses found in carrier stage in asymptomatic children may interact with other viruses and even facilitate their settling in the upper respiratory tract. The pathophysiological role of these interactions is not yet clear.
Collapse
|
18
|
Daskou M, Tsakogiannis D, Dimitriou TG, Amoutzias GD, Mossialos D, Kottaridi C, Gartzonika C, Markoulatos P. WarmStart colorimetric LAMP for the specific and rapid detection of HPV16 and HPV18 DNA. J Virol Methods 2019; 270:87-94. [PMID: 31042552 DOI: 10.1016/j.jviromet.2019.04.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 04/15/2019] [Accepted: 04/26/2019] [Indexed: 10/26/2022]
Abstract
BACKGROUND AND OBJECTIVES Persistent infection with High-Risk HPV genotypes is the principal cause for the development of cervical cancer with HPV16 and HPV18 to be the most frequently identified HPV genotypes observed in approximately 70% of cervical cancer cases worldwide. The present study focused on the development of a simple molecular methodology based on WarmStart colorimetric LAMP for the specific identification of HPV16 and HPV18. METHODS The method was developed by designing LAMP type-specific primer sets that target the E6 gene. The assay was applied using HPV-positive clinical samples along with control cases in order to evaluate the specificity of the newly designed isothermal protocol. In addition, an experimental cutoff value was estimated through reconstitution experiments with HPV-DNA plasmids. LAMP amplicons were visualized by color changes, thus eliminating the requirement for post-amplification processing steps. RESULTS The WarmStart colorimetric LAMP facilitates the isothermal amplification of 10 copies per reaction of both HPV16 and HPV18 DNA, while it exhibits 100% specificity for the detection of the corresponding genotypes in LSIL and HSIL cases. Moreover, the assay demonstrates 100% PPV and 100% NPV. Finally, the sensitivity of conventional PCR with the type-specific LAMP primer sets (B3/F3) for the HPV16, HPV18 DNA detection was 100 copies/reaction and 10 copies/reaction, respectively. CONCLUSIONS The newly established WarmStart colorimetric LAMP can be considered as a powerful molecular tool that it can be easily implemented in small clinical and research laboratories for a rapid and efficient identification of the most tumorigenic HPV genotypes.
Collapse
Affiliation(s)
- M Daskou
- Microbiology-Virology Laboratory, Department of Biochemistry & Biotechnology, School of Health Sciences, University of Thessaly, Biopolis, 41500, Larissa, Greece
| | - D Tsakogiannis
- Microbiology-Virology Laboratory, Department of Biochemistry & Biotechnology, School of Health Sciences, University of Thessaly, Biopolis, 41500, Larissa, Greece.
| | - T G Dimitriou
- Microbiology-Virology Laboratory, Department of Biochemistry & Biotechnology, School of Health Sciences, University of Thessaly, Biopolis, 41500, Larissa, Greece
| | - G D Amoutzias
- Bioinformatics Laboratory, University of Thessaly, School of Health Sciences, Department of Biochemistry & Biotechnology, BIOPOLIS, Larissa, Greece
| | - D Mossialos
- Microbiology-Virology Laboratory, Department of Biochemistry & Biotechnology, School of Health Sciences, University of Thessaly, Biopolis, 41500, Larissa, Greece
| | - C Kottaridi
- Department of Cytopathology, National and Kapodistrian University of Athens, Medical School, "ATTIKON" University Hospital, 1 Rimini, Haidari, 12462, Athens, Greece
| | - C Gartzonika
- Department of Microbiology, University of Ioannina, Medical School, Ioannina, Greece
| | - P Markoulatos
- Microbiology-Virology Laboratory, Department of Biochemistry & Biotechnology, School of Health Sciences, University of Thessaly, Biopolis, 41500, Larissa, Greece
| |
Collapse
|
19
|
Vliora C, Papadakis V, Doganis D, Tourkantoni N, Paisiou A, Kottaridi C, Kourlamba G, Zaoutis T, Kosmidis H, Kattamis A, Polychronopoulou S, Goussetis E, Giannouli G, Syridou G, Priftis K, Papaevangelou V. A prospective study on the epidemiology and clinical significance of viral respiratory infections among pediatric oncology patients. Pediatr Hematol Oncol 2019; 36:173-186. [PMID: 31215284 DOI: 10.1080/08880018.2019.1613462] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Respiratory infections in oncology are both common and potentially severe. However, there is still a gap in the literature, regarding the epidemiology of viral respiratory infections in children with cancer. We prospectively enrolled 224 patients, from September 2012 to August 2015. The cohort included children with hematologic or solid malignancies receiving chemotherapy, or undergoing hemopoietic stem cell transplantation, outpatients/inpatients exhibiting signs/symptoms of febrile/afebrile upper/lower respiratory infection. Viral infection was diagnosed by detection of ≥1 viruses from a sample at time of enrollment, using the CLART® PneumoVir kit (GENOMICA, Spain). Α detailed questionnaire including demographics and medical history was also completed. Samples were processed in batches, results were communicated as soon as they became available. Children recruited in whom no virus was detected composed the no virus detected group. Viral prevalence was 38.4% in children presenting with respiratory illness. A single virus was found in 30.4%, with RSV being the most frequent. Viral coinfections were detected in 8%. Children with viral infection were more likely to be febrile upon enrollment and to present with lower respiratory signs/symptoms. They had longer duration of illness and they were more likely to receive antibiotics/antifungals. Only 22% of children with influenza received oseltamivir. Mortality was low (2.7%), however, pediatric intensive care unit (PICU) admission and death were correlated with virus detection. In our study mortality was low and PICU admission was related to virus identification. Further research is needed to clarify whether antibiotics in virus-proven infection are of value and underline the importance of oseltamivir's timely administration in influenza.
Collapse
Affiliation(s)
- Christianna Vliora
- a Third Department of Pediatrics , National and Kapodistrian University of Athens, "ATTIKON" University Hospital , Athens , Greece
| | - Vassilios Papadakis
- b Department of Pediatric Hematology-Oncology , Athens , Greece , "Aghia Sofia" Children's Hospital
| | - Dimitrios Doganis
- c Oncology Department , " P&A Kyriakou" Children's Hospital , Athens , Greece
| | - Natalia Tourkantoni
- d Hematology-Oncology Unit, First Department of Pediatrics , National and Kapodistrian University of Athens, "Aghia Sofia" Children's Hospital , Athens , Greece
| | - Anna Paisiou
- e Stem Cell Transplant Unit , Aghia Sofia Children's Hospital , Athens , Greece
| | | | - Georgia Kourlamba
- g The Stavros Niarchos Foundation-Collaborative Center for Clinical Epidemiology and Outcomes Research (CLEO), First and Second Departments of Pediatrics, National and Kapodistrian University of Athens , Athens , Greece
| | - Theoklis Zaoutis
- g The Stavros Niarchos Foundation-Collaborative Center for Clinical Epidemiology and Outcomes Research (CLEO), First and Second Departments of Pediatrics, National and Kapodistrian University of Athens , Athens , Greece
| | - Helen Kosmidis
- c Oncology Department , " P&A Kyriakou" Children's Hospital , Athens , Greece
| | - Antonis Kattamis
- d Hematology-Oncology Unit, First Department of Pediatrics , National and Kapodistrian University of Athens, "Aghia Sofia" Children's Hospital , Athens , Greece
| | - Sophia Polychronopoulou
- b Department of Pediatric Hematology-Oncology , Athens , Greece , "Aghia Sofia" Children's Hospital
| | - Evgenios Goussetis
- e Stem Cell Transplant Unit , Aghia Sofia Children's Hospital , Athens , Greece
| | - Georgia Giannouli
- a Third Department of Pediatrics , National and Kapodistrian University of Athens, "ATTIKON" University Hospital , Athens , Greece
| | - Garyfallia Syridou
- a Third Department of Pediatrics , National and Kapodistrian University of Athens, "ATTIKON" University Hospital , Athens , Greece
| | - Kostas Priftis
- a Third Department of Pediatrics , National and Kapodistrian University of Athens, "ATTIKON" University Hospital , Athens , Greece
| | - Vassiliki Papaevangelou
- a Third Department of Pediatrics , National and Kapodistrian University of Athens, "ATTIKON" University Hospital , Athens , Greece
| |
Collapse
|
20
|
Kritikou G, Avgerinos KI, Koutserimpas C, Sourri F, Hatzigeorgiou D, Kottaridi C, Bountouris I. Effectiveness of a preventive bundle of measures for reducing surgical site infections in patients undergoing elective orthopedic procedures in a Hellenic Air Force Hospital. G Chir 2019; 40:120-126. [PMID: 31131811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
BACKGROUND Bundles of preventive measures may improve patient outcomes. The aim of this study is to investigate if a surgical site infections (SSIs) preventive bundle in orthopedic surgery patients can result in reduction of such infections, hospitalization length and cost. METHODS The present is a retrospective cohort study. A total of 1299 patients was admitted to hospital for an elective orthopedic procedure during 2012-2015. The patients were subjected to either an integrated three-stage SSIs preventive protocol or standard preventive measures. The two groups were compared for incidence of SSIs, median hospitalization length and median cost. RESULTS The incidence of SSIs was lower in the new-protocol group, when compared to the old protocol one (p=0.102). Median (md) hospitalization length was significantly lower in the new protocol group (md = 2) compared to "old-protocol" group (md= 5) [U = 280520, p<0.001]. Regarding arthroscopies, the median cost in the new protocol patients (md= 1500) was significantly lower compared to "old-protocol" patients (md= 1585) [(U= 112660), p < 0.001]. Knee arthroplasties' median costs did not differ (both mds= 4400, U = 2002, p > 0.05). For hip arthroplasties, the new protocol's patient median cost (md= 3000) was significantly lower than that of "old-protocol" (md = 4000) [U = 19680, p < 0.001]. CONCLUSIONS The use of a bundle of measures for the prevention of SSIs in a hospital's orthopedic operations proved effective, since it resulted in substantial decrease of SSIs, statistically significant decreased hospitalization length, as well as cost.
Collapse
|
21
|
Spathis A, Katoulis AC, Damaskou V, Liakou AI, Kottaridi C, Leventakou D, Sgouros D, Mamantopoulos A, Rigopoulos D, Karakitsos P, Panayiotides IG. BRAF Mutation Status in Primary, Recurrent, and Metastatic Malignant Melanoma and Its Relation to Histopathological Parameters. Dermatol Pract Concept 2019; 9:54-62. [PMID: 30775150 PMCID: PMC6368075 DOI: 10.5826/dpc.0901a13] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Background BRAF mutations are a common finding in malignant melanoma (MM). Nevertheless, apart from their significance as a therapeutic target in advanced melanoma, their prognostic value is still debated. Objective To assess BRAF mutation status in primary, recurrent, or metastatic MM and its correlations with histopathological findings. Methods We analyzed 203 samples from 178 consecutive patients: 129 primary cutaneous MM, 49 metastatic and recurrent MM of unknown primary site, and 25 cases of recurrences or metastases of primary MM. BRAF mutations in exon 15 were identified with real-time polymerase chain reaction and/or direct sequencing or pyrosequencing. Histopathological examination was performed according to standard procedures. Results We observed a 42.1% prevalence of BRAF mutations at codon 600 among our patients, 84% of whom harbored the V600E mutation. Mutations showed a statistically significant increase in younger patients (P = 0.011), in ulcerated tumors (P = 0.020), and in tumors lacking solar elastosis in adjacent dermis (P = 0.008). Mutations were also more common in male patients, as well as in primary MMs of the torso, and in nonvisceral metastases, however without reaching statistical significance. Logistic regression analysis identified type and ulceration as the only significant predictors of BRAF mutation. The highest frequencies of mutated BRAF were identified in superficial spreading and nodular types, and the lowest in acral lentiginous and lentigo maligna types. In situ MM and primary dermal melanoma displayed intermediate frequencies. Conclusion Frequency of mutated BRAF is type-related and correlated with ulceration, a known adverse prognostic factor.
Collapse
Affiliation(s)
- Aris Spathis
- Second Department of Pathology, National and Kapodistrian University of Athens, School of Medicine, Attikon University Hospital, Athens, Greece
| | - Alexander C Katoulis
- Second Department of Dermatology and Venereology, National and Kapodistrian University of Athens, School of Medicine, Attikon University Hospital, Athens, Greece
| | - Vasileia Damaskou
- Second Department of Pathology, National and Kapodistrian University of Athens, School of Medicine, Attikon University Hospital, Athens, Greece
| | - Aikaterini I Liakou
- Second Department of Dermatology and Venereology, National and Kapodistrian University of Athens, School of Medicine, Attikon University Hospital, Athens, Greece
| | - Christine Kottaridi
- Second Department of Pathology, National and Kapodistrian University of Athens, School of Medicine, Attikon University Hospital, Athens, Greece
| | - Danai Leventakou
- Second Department of Pathology, National and Kapodistrian University of Athens, School of Medicine, Attikon University Hospital, Athens, Greece
| | - Dimitrios Sgouros
- Second Department of Dermatology and Venereology, National and Kapodistrian University of Athens, School of Medicine, Attikon University Hospital, Athens, Greece
| | | | - Dimitrios Rigopoulos
- Second Department of Dermatology and Venereology, National and Kapodistrian University of Athens, School of Medicine, Attikon University Hospital, Athens, Greece
| | - Petros Karakitsos
- Department of Cytopathology, National and Kapodistrian University of Athens, School of Medicine, Attikon University Hospital, Athens, Greece
| | - Ioannis G Panayiotides
- Second Department of Pathology, National and Kapodistrian University of Athens, School of Medicine, Attikon University Hospital, Athens, Greece
| |
Collapse
|
22
|
Tsakogiannis D, Moschonas GD, Daskou M, Stylianidou Z, Kyriakopoulou Z, Kottaridi C, Dimitriou TG, Gartzonika C, Markoulatos P. Polymorphic variability in the exon 19 of the RB1 gene and its flanking intronic sequences in HPV16-associated precancerous lesions in the Greek population. J Med Microbiol 2018; 67:1638-1644. [PMID: 30303478 DOI: 10.1099/jmm.0.000843] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
PURPOSE The tumour suppressor protein RB plays a decisive role in negative control of the cell cycle, inhibiting tumour development. The present analysis investigated the prevalence of the nucleotide polymorphism A153104G, which is located at intron 18 of the RB1 gene, and investigated the impact of the polymorphic variability in the exon 19 and its flanking intronic sequences on the severity of cervical disease in HPV16-positive Greek women. METHODOLOGY The nucleotide polymorphism A153104G was detected by PCR-RFLP assay, while the amplicons were further subjected to cloning and sequencing. Moreover, molecular evolutionary analysis was performed using the maximum-likelihood (ML) and empirical Bayesian (EB) methods in order to evaluate the selective pressure acting on exon 19 of the RB1 gene.Results/Key findings. The A153104G nucleotide polymorphism was only detected in one control case. Moreover, sequence analysis of the amplicons revealed that the polymorphic variability in the RB1 gene increased with the severity of the cervical dysplasia. The link between the observed polymorphic variability and the progress of cervical disease was reflected in the molecular evolutionary analysis that was performed on the exon 19 of the RB1 gene, since negative selective pressure was acting upon exon 19 in the control and low-grade squamous intraepithelial lesion (LSIL) cervical samples, while positive selective pressure was acting upon exon 19 in the high-grade squamous intraepithelial lesion (HSIL) specimens. CONCLUSIONS The A153104G nucleotide polymorphism did not emerge as a potential biomarker for the development of precancerous lesions in the Greek patients, while the accumulation of sequence variations in RB1 gene might influence patients' susceptibility towards the progression of cervical neoplasia.
Collapse
Affiliation(s)
- D Tsakogiannis
- 1Microbiology-Virology Laboratory, Department of Biochemistry and Biotechnology, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - G D Moschonas
- 1Microbiology-Virology Laboratory, Department of Biochemistry and Biotechnology, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - M Daskou
- 1Microbiology-Virology Laboratory, Department of Biochemistry and Biotechnology, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - Z Stylianidou
- 1Microbiology-Virology Laboratory, Department of Biochemistry and Biotechnology, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - Z Kyriakopoulou
- 1Microbiology-Virology Laboratory, Department of Biochemistry and Biotechnology, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - C Kottaridi
- 2Department of Cytopathology, National and Kapodistrian University of Athens, Medical School, 'ATTIKON' University Hospital, 1 Rimini, Haidari, 12462, Athens, Greece
| | - T G Dimitriou
- 1Microbiology-Virology Laboratory, Department of Biochemistry and Biotechnology, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - C Gartzonika
- 3Department of Microbiology, University of Ioannina, Medical School, Ioannina, Greece
| | - P Markoulatos
- 1Microbiology-Virology Laboratory, Department of Biochemistry and Biotechnology, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece
| |
Collapse
|
23
|
Kyriakou E, Nearchakos N, Bonovas S, Makri E, Pantavou K, Nikolopoulos GK, Kottaridi C, Gialeraki A, Douramani P, Taichert M, Kapsimali V, Tsantes AE. Comparison between Nageotte and flow cytometric counting of residual leucocytes in freshly prepared leucocyte-reduced red blood cell components. Transfus Apher Sci 2018; 57:544-548. [DOI: 10.1016/j.transci.2018.06.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 04/24/2018] [Accepted: 06/05/2018] [Indexed: 10/14/2022]
|
24
|
Parthenis C, Panagopoulos P, Margari N, Kottaridi C, Spathis A, Pouliakis A, Konstantoudakis S, Chrelias G, Chrelias C, Papantoniou N, Panayiotides IG, Tsiodras S. The association between sexually transmitted infections, human papillomavirus, and cervical cytology abnormalities among women in Greece. Int J Infect Dis 2018; 73:72-77. [PMID: 29902519 DOI: 10.1016/j.ijid.2018.06.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 06/04/2018] [Accepted: 06/05/2018] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVE To investigate the diagnosis of sexually transmitted infections (STIs) with human papillomavirus (HPV) infection and the presence of cytological changes in the cervix in a cohort of sexually active women in Greece. METHODS Cervical cytology testing and the molecular typing of HPV and other STIs were performed for 345 sexually active women aged between 18 and 45 years (mean 33.2±7.2years) visiting a gynaecology clinic for routine cervical screening. The association of HPV and STI detection with cytological findings was investigated. RESULTS HPV was detected in 61 women (17.7%) and STIs in 82 (23.8%). Ureaplasma spp was the most frequently detected pathogen, which was found in 63 (18.2%) women, followed by Mycoplasma spp (21 women, 25.6%) and Chlamydia trachomatis (five women, 6.1%). HPV positivity only (with no co-presence of STI) was associated with an abnormal cytology (odds ratio 6.9, p<0.001), while women who were negative for both HPV and STIs had a higher probability of a normal cytology (odds ratio 0.36, p<0.01). Sixteen out of the 63 (25.4%) women who tested positive for Ureaplasma spp, harboured a high-risk HPV type (odds ratio 2.3, p=0.02). CONCLUSIONS In a population with a high prevalence of Ureaplasma spp, there was an association of this pathogen with high-risk HPV infection, a finding that needs further elucidation.
Collapse
Affiliation(s)
- Christos Parthenis
- Third Department of Obstetrics and Gynaecology, 'Attikon' University Hospital, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Periklis Panagopoulos
- Third Department of Obstetrics and Gynaecology, 'Attikon' University Hospital, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Niki Margari
- Second Department of Pathology, 'Attikon' University Hospital, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Christine Kottaridi
- Second Department of Pathology, 'Attikon' University Hospital, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Aris Spathis
- Second Department of Pathology, 'Attikon' University Hospital, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Abraham Pouliakis
- Second Department of Pathology, 'Attikon' University Hospital, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Stefanos Konstantoudakis
- Second Department of Pathology, 'Attikon' University Hospital, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - George Chrelias
- Third Department of Obstetrics and Gynaecology, 'Attikon' University Hospital, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Charalambos Chrelias
- Third Department of Obstetrics and Gynaecology, 'Attikon' University Hospital, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Nikolaos Papantoniou
- Third Department of Obstetrics and Gynaecology, 'Attikon' University Hospital, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Ioannis G Panayiotides
- Second Department of Pathology, 'Attikon' University Hospital, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Sotirios Tsiodras
- Fourth Department of Internal Medicine, 'Attikon' University Hospital, National and Kapodistrian University of Athens, Medical School, Athens, Greece.
| |
Collapse
|
25
|
Antalis E, Oikonomopoulou Z, Kottaridi C, Kossyvakis A, Spathis A, Magkana M, Katsouli A, Tsagris V, Papaevangelou V, Mentis A, Tsiodras S. Mixed viral infections of the respiratory tract; an epidemiological study during consecutive winter seasons. J Med Virol 2018; 90:663-670. [PMID: 29244214 PMCID: PMC7167177 DOI: 10.1002/jmv.25006] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 11/29/2017] [Indexed: 12/11/2022]
Abstract
The current study aimed to describe the molecular epidemiology of mixed respiratory viral infections during consecutive winter seasons in a tertiary care hospital. Patients with symptoms of respiratory tract infection were evaluated during the 2009‐2011 and 2013‐15 winter seasons. A clinical microarray technique was used for viral detection. Clinical and epidemiological data were correlated with mixed viral detection and the need for hospitalization. In 332 out of 604 (54.4%) evaluated patients (17.6% children) a respiratory virus was identified. Mixed viral infections were diagnosed in 68/332 (20.5%) patients with virus detection (66.2% mixed Influenza‐RSV infections). Mixed viral infections were more commonly detected in children (OR 3.7; 95%CI 1.9‐5.6, P < 0.01) and patients with comorbidities. In logistic regression analyses, mixed viral infections were associated with younger age (mean age 30.4 years vs. 41.8 years, P ≤ 0.001) and increased rates of fever (OR: 2.7; 95%CI 1.04‐7.2, P < 0.05) but no adverse outcomes or increased rates of hospitalization. High rates of mixed viral infections were noted during all winter seasons (especially Influenza and RSV) and were more common in younger patients. The clinical significance of mixed respiratory viral infection needs further elucidation.
Collapse
Affiliation(s)
- Emmanouil Antalis
- 4th Department of Internal Medicine, University Hospital Attikon, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Zacharoula Oikonomopoulou
- 4th Department of Internal Medicine, University Hospital Attikon, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Christine Kottaridi
- Department of Cytopathology, University Hospital Attikon, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | | | - Aris Spathis
- Department of Cytopathology, University Hospital Attikon, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Maria Magkana
- Department of Cytopathology, University Hospital Attikon, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Aikaterini Katsouli
- 4th Department of Internal Medicine, University Hospital Attikon, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Vassileios Tsagris
- 3rd Department of Pediatrics, University Hospital Attikon, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Vassiliki Papaevangelou
- 3rd Department of Pediatrics, University Hospital Attikon, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | | | - Sotirios Tsiodras
- 4th Department of Internal Medicine, University Hospital Attikon, National and Kapodistrian University of Athens Medical School, Athens, Greece
| |
Collapse
|
26
|
Papaevangelou V, Christoni Z, Vliora C, Kottaridi C, Fotiou A, Malamitsi-Puchner A, Mentis A, Karakitsos P, Syggelou A. Neonatal screening for congenital CMV infection stresses the importance of maternal nonprimary infection even in an area where prenatal serology testing is common. J Matern Fetal Neonatal Med 2017; 32:1901-1904. [PMID: 29281927 DOI: 10.1080/14767058.2017.1416605] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
AIM AND METHODS Dried blood spots from 2149 newborns were examined to diagnose congenital cytomegalovirus (cCMV). RESULTS Prenatal CMV-IgG antibodies had been measured during prenatal care in 1287 (60.3%) of mothers and 980 (76.1%) of them were found seropositive. cCMV incidence was 0.47%. All newborns were asymptomatic; 9/10 were born post nonprimary maternal infection; two developed sensorineural hearing loss. CONCLUSIONS In a country where prenatal CMV testing is common and therefore a false sense of control might prevail, nonprimary maternal infection should not be overlooked. Indeed, women of childbearing age should be educated on CMV prevention measures irrespectively to their serostatus.
Collapse
Affiliation(s)
- Vassiliki Papaevangelou
- a Third Department of Pediatrics , National and Kapodistrian Univeristy of Athens Medical School, "ATTIKON" University Hospital , Athens , Greece
| | - Zoi Christoni
- b Department of Medical Laboratories , University of Applied Sciences of Thessaly , Larissa , Greece
| | - Christianna Vliora
- c General Paediatrics Department , Our Lady's Children's Hospital , Crumlin , Dublin , Ireland
| | - Christine Kottaridi
- d Department of Cytopathology , National and Kapodistrian University of Athens Medical School, "ATTIKON" University Hospital , Athens , Greece
| | - Aikaterini Fotiou
- e Department of Neonatology , Elena Venizelou Materinity Hospital , Athens , Greece
| | - Ariadne Malamitsi-Puchner
- f Department of Neonatology , National and Kapodistrian University of Athens Medical School, Aretaieion Hospital , Athens , Greece
| | - Andreas Mentis
- g Public Health Laboratories , Hellenic Pasteur institute , Athens , Greece
| | - Petros Karakitsos
- d Department of Cytopathology , National and Kapodistrian University of Athens Medical School, "ATTIKON" University Hospital , Athens , Greece
| | - Angeliki Syggelou
- h Second Department of Pediatrics , National and Kapodistrian Univeristy of Athens Medical School, P&A Kyriakou Childrens' Hospital , Athens , Greece
| |
Collapse
|
27
|
Tsakogiannis D, Moschonas GD, Bella E, Kyriakopoulou Z, Amoutzias GD, Dimitriou TG, Kottaridi C, Markoulatos P. Association of p16 (CDKN2A) polymorphisms with the development of HPV16‐related precancerous lesions and cervical cancer in the Greek population. J Med Virol 2017; 90:965-971. [DOI: 10.1002/jmv.24996] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Accepted: 11/17/2017] [Indexed: 01/01/2023]
Affiliation(s)
- Dimitris Tsakogiannis
- University of ThessalySchool of Health SciencesDepartment of Biochemistry & BiotechnologyMicrobiology‐Virology LaboratoryBIOPOLISLarissaGreece
| | - George D. Moschonas
- University of ThessalySchool of Health SciencesDepartment of Biochemistry & BiotechnologyMicrobiology‐Virology LaboratoryBIOPOLISLarissaGreece
| | - Evangelia Bella
- University of ThessalySchool of Health SciencesDepartment of Biochemistry & BiotechnologyMicrobiology‐Virology LaboratoryBIOPOLISLarissaGreece
| | - Zaharoula Kyriakopoulou
- University of ThessalySchool of Health SciencesDepartment of Biochemistry & BiotechnologyMicrobiology‐Virology LaboratoryBIOPOLISLarissaGreece
| | - Grigoris D. Amoutzias
- University of ThessalySchool of Health SciencesDepartment of Biochemistry & BiotechnologyBioinformatics LaboratoryBIOPOLISLarissaGreece
| | - Tilemachos G. Dimitriou
- University of ThessalySchool of Health SciencesDepartment of Biochemistry & BiotechnologyMicrobiology‐Virology LaboratoryBIOPOLISLarissaGreece
| | - Christine Kottaridi
- Department of Cytopathology, National and Kapodistrian University of Athens, Medical School“ATTIKON” University Hospital, Rimini, HaidariAthensGreece
| | - Panayotis Markoulatos
- University of ThessalySchool of Health SciencesDepartment of Biochemistry & BiotechnologyMicrobiology‐Virology LaboratoryBIOPOLISLarissaGreece
| |
Collapse
|
28
|
Moschonas GD, Tsakogiannis D, Lamprou KA, Mastora E, Dimitriou TG, Kyriakopoulou Z, Kottaridi C, Karakitsos P, Markoulatos P. Corrigendum: Association of codon 72 polymorphism of p53 with the severity of cervical dysplasia, E6-T350G and HPV16 variant lineages in HPV16-infected women. J Med Microbiol 2017; 66:1521. [PMID: 28990901 DOI: 10.1099/jmm.0.000605] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- George D Moschonas
- Department of Biochemistry and Biotechnology, Microbiology-Virology Laboratory, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - Dimitris Tsakogiannis
- Department of Biochemistry and Biotechnology, Microbiology-Virology Laboratory, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - Konstantinos A Lamprou
- Department of Biochemistry and Biotechnology, Microbiology-Virology Laboratory, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - Eirini Mastora
- Department of Biochemistry and Biotechnology, Microbiology-Virology Laboratory, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - Tilemachos G Dimitriou
- Department of Biochemistry and Biotechnology, Microbiology-Virology Laboratory, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - Zaharoula Kyriakopoulou
- Department of Biochemistry and Biotechnology, Microbiology-Virology Laboratory, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - Christine Kottaridi
- Department of Cytopathology, National and Kapodistrian University of Athens, Medical School, 'ATTIKON' University Hospital, 1 Rimini, Haidari, Athens, 12462, Greece
| | - Petros Karakitsos
- Department of Cytopathology, National and Kapodistrian University of Athens, Medical School, 'ATTIKON' University Hospital, 1 Rimini, Haidari, Athens, 12462, Greece
| | - Panayotis Markoulatos
- Department of Biochemistry and Biotechnology, Microbiology-Virology Laboratory, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece
| |
Collapse
|
29
|
Moschonas GD, Tsakogiannis D, Lamprou KA, Mastora E, Dimitriou TG, Kyriakopoulou Z, Kottaridi C, Karakitsos P, Markoulatos P. Association of codon 72 polymorphism of p53 with the severity of cervical dysplasia, E6-T350G and HPV16 variant lineages in HPV16-infected women. J Med Microbiol 2017; 66:1358-1365. [PMID: 28857739 DOI: 10.1099/jmm.0.000563] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Purpose. Polymorphic variability in the tumour-suppressor protein p53 at codon 72 has a considerable impact on cervical cancer development. The present study clarified the association between p53 codon 72 genotypes and the risk of cervical disease in Greek patients. We also examined whether the presence of specific p53 genotypes in combination with HPV16 variants or E6 T350G sequence variation can modify an individual's susceptibility to cervical disease.Methodology. The analysis of p53 genotypes was performed through PCR-RFLP. Sequence and phylogenetic tree analyses of the HPV16 E6 gene were also performed in order to identify HPV16 variants and T350G sequence variation.Results/Key findings. The outcomes of the present analysis revealed that women who are homozygous for the arg genotype are at a 4.17-fold higher risk of developing HPV16-associated HSIL+ (OR=4.17, 95 % CI:1.48-4.9, P=0.0049). Moreover, p53 arg/arg patients infected by an HPV16 prototype strain were associated with an increased risk of more severe lesions, while a significant relationship between the p53 arg/arg genotype in patients with T350G sequence variation and the risk of high-grade squamous intraepithelial lesions (HSILs) was revealed.Conclusion. The oncogenic potential of the virus is increased by the presence of the p53 arg/arg genotype in the Greek population in such a way that the specific protein interaction E6 (L83V)-p53 (Arg-72) can modify an individual's susceptibility to cervical disease.
Collapse
Affiliation(s)
- George D Moschonas
- Department of Biochemistry and Biotechnology, Microbiology-Virology Laboratory, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - Dimitris Tsakogiannis
- Department of Biochemistry and Biotechnology, Microbiology-Virology Laboratory, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - Konstantinos A Lamprou
- Department of Biochemistry and Biotechnology, Microbiology-Virology Laboratory, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - Eirini Mastora
- Department of Biochemistry and Biotechnology, Microbiology-Virology Laboratory, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - Tilemachos G Dimitriou
- Department of Biochemistry and Biotechnology, Microbiology-Virology Laboratory, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - Zaharoula Kyriakopoulou
- Department of Biochemistry and Biotechnology, Microbiology-Virology Laboratory, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - Christine Kottaridi
- Department of Cytopathology, National and Kapodistrian University of Athens, Medical School, 'ATTIKON' University Hospital, 1 Rimini, Haidari, Athens, 12462, Greece
| | - Petros Karakitsos
- Department of Cytopathology, National and Kapodistrian University of Athens, Medical School, 'ATTIKON' University Hospital, 1 Rimini, Haidari, Athens, 12462, Greece
| | - Panayotis Markoulatos
- Department of Biochemistry and Biotechnology, Microbiology-Virology Laboratory, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece
| |
Collapse
|
30
|
Kottaridi C, Spathis A, Margari N, Koureas N, Terzakis E, Chrelias C, Pappas A, Bilirakis E, Pouliakis A, Panayiotides IJ, Karakitsos P. Evaluation Analysis of miRNAs Overexpression in Liquid-Based Cytology Endometrial Samples. J Cancer 2017; 8:2699-2703. [PMID: 28928858 PMCID: PMC5604201 DOI: 10.7150/jca.19947] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 06/07/2017] [Indexed: 12/20/2022] Open
Abstract
Background: miRNAs have an important role as their deregulation is linked to endometrial cancer. Methods: A custom miScript® miRNA PCR Array was used to investigate for the first time the expression of eight miRNAs in forty-nine histologically confirmed Liquid Based cytology endometrial samples. The expression profile of the same miRNAs was also examined in sixty formalin-fixed tissue samples. Results: Expression of seven miRNAs was significantly higher in malignant samples with three of them (mir-182, mir-141 and mir-205) performing optimally. Conclusion: These results suggest the potential use of this non-invasive method of sampling for miRNA expression studies. Furthermore miRNA overexpression could serve as an ancillary or reflex test for optimal identification of malignant samples especially in morphologically inadequate samples.
Collapse
Affiliation(s)
- Christine Kottaridi
- Department of Cytopathology, University General Hospital "ATTIKON", School of Medicine, National and Kapodistrian University of Athens, Athens 12464, Greece
| | - Aris Spathis
- Department of Cytopathology, University General Hospital "ATTIKON", School of Medicine, National and Kapodistrian University of Athens, Athens 12464, Greece
| | - Niki Margari
- Department of Cytopathology, University General Hospital "ATTIKON", School of Medicine, National and Kapodistrian University of Athens, Athens 12464, Greece
| | - Nikolaos Koureas
- Department of Obstetrics and Gynaecology, "Saint Savvas" Anticancer Hospital, Athens 11522, Greece
| | - Emmanouil Terzakis
- Department of Obstetrics and Gynaecology, "Saint Savvas" Anticancer Hospital, Athens 11522, Greece
| | - Charalampos Chrelias
- 3 rd Department of Gynaecology and Obstetrics, University General Hospital "ATTIKON", School of Medicine, National and Kapodistrian University of Athens, Athens 12464, Greece
| | - Asimakis Pappas
- 3 rd Department of Gynaecology and Obstetrics, University General Hospital "ATTIKON", School of Medicine, National and Kapodistrian University of Athens, Athens 12464, Greece
| | - Evripidis Bilirakis
- Department of Obstetrics and Gynaecology, IASO Hospital, 37-39 Kifisias Av., Maroussi, 15123, Athens, Greece.,Colposcopy Unit, 1 st Department Department of Gynaecology and Obstetrics, General Hospital "Elena Venizelou", Athens, 11521, Greece
| | - Abraham Pouliakis
- Department of Cytopathology, University General Hospital "ATTIKON", School of Medicine, National and Kapodistrian University of Athens, Athens 12464, Greece
| | - Ioannis J Panayiotides
- 2 nd Department of Pathology, University General Hospital "ATTIKON", School of Medicine, National and Kapodistrian University of Athens, Athens 12464, Greece
| | - Petros Karakitsos
- Department of Cytopathology, University General Hospital "ATTIKON", School of Medicine, National and Kapodistrian University of Athens, Athens 12464, Greece
| |
Collapse
|
31
|
Kottaridi C, Kyrgiou M, Pouliakis A, Magkana M, Aga E, Spathis A, Mitra A, Makris G, Chrelias C, Mpakou V, Paraskevaidis E, Panayiotides JG, Karakitsos P. Quantitative Measurement of L1 Human Papillomavirus Type 16 Methylation for the Prediction of Preinvasive and Invasive Cervical Disease. J Infect Dis 2017; 215:764-771. [PMID: 28170039 DOI: 10.1093/infdis/jiw645] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 01/28/2017] [Indexed: 11/15/2022] Open
Abstract
Background Methylation of the human papillomavirus (HPV) DNA has been proposed as a novel biomarker. Here, we correlated the mean methylation level of 12 CpG sites within the L1 gene, to the histological grade of cervical precancer and cancer. We assessed whether HPV L1 gene methylation can predict the presence of high-grade disease at histology in women testing positive for HPV16 genotype. Methods Pyrosequencing was used for DNA methylation quantification and 145 women were recruited. Results We found that the L1 HPV16 mean methylation (±SD) significantly increased with disease severity (cervical intraepithelial neoplasia [CIN] 3, 17.9% [±7.2] vs CIN2, 11.6% [±6.5], P < .001 or vs CIN1, 9.0% [±3.5], P < .001). Mean methylation was a good predictor of CIN3+ cases; the area under the curve was higher for sites 5611 in the prediction of CIN2+ and higher for position 7145 for CIN3+. The evaluation of different methylation thresholds for the prediction of CIN3+ showed that the optimal balance of sensitivity and specificity (75.7% and 77.5%, respectively) and positive and negative predictive values (74.7% and 78.5%, respectively) was achieved for a methylation of 14.0% with overall accuracy of 76.7%. Conclusions Elevated methylation level is associated with increased disease severity and has good ability to discriminate HPV16-positive women that have high-grade disease or worse.
Collapse
Affiliation(s)
- Christine Kottaridi
- Department of Cytopathology, National and Kapodistrian University of Athens Medical School, "ATTIKON" University Hospital, Athens, Greece
| | - Maria Kyrgiou
- Department of Surgery and Cancer, Institute of Reproductive and Developmental Biology, Faculty of Medicine, Imperial College London, UK.,West London Gynaecological Cancer Center, Queen Charlotte's and Chelsea, Hammersmith Hospital, Imperial Healthcare NHS Trust, London, UK
| | - Abraham Pouliakis
- Department of Cytopathology, National and Kapodistrian University of Athens Medical School, "ATTIKON" University Hospital, Athens, Greece
| | - Maria Magkana
- Department of Cytopathology, National and Kapodistrian University of Athens Medical School, "ATTIKON" University Hospital, Athens, Greece
| | - Evangelia Aga
- Department of Cytopathology, National and Kapodistrian University of Athens Medical School, "ATTIKON" University Hospital, Athens, Greece
| | - Aris Spathis
- Department of Cytopathology, National and Kapodistrian University of Athens Medical School, "ATTIKON" University Hospital, Athens, Greece
| | - Anita Mitra
- Department of Surgery and Cancer, Institute of Reproductive and Developmental Biology, Faculty of Medicine, Imperial College London, UK.,West London Gynaecological Cancer Center, Queen Charlotte's and Chelsea, Hammersmith Hospital, Imperial Healthcare NHS Trust, London, UK
| | - George Makris
- Third Department of Obstetrics and Gynecology, University of Athens Medical School, "ATTIKON" University Hospital, Athens
| | - Charalampos Chrelias
- Third Department of Obstetrics and Gynecology, University of Athens Medical School, "ATTIKON" University Hospital, Athens
| | - Vassiliki Mpakou
- Second Department of Internal Medicine and Research Institute, University of Athens Medical School, "ATTIKON" University Hospital, Athens
| | | | - John G Panayiotides
- Second Department of Pathology, University of Athens Medical School, "ATTIKON" University Hospital, Athens, Greece
| | - Petros Karakitsos
- Department of Cytopathology, National and Kapodistrian University of Athens Medical School, "ATTIKON" University Hospital, Athens, Greece
| |
Collapse
|
32
|
Leventakos K, Tsiodras S, Kelesidis T, Kefala M, Kottaridi C, Spathis A, Gouloumi AR, Pouliakis A, Pappas A, Sioulas V, Chrelias C, Karakitsos P, Panayiotides I. γH2Ax Expression as a Potential Biomarker Differentiating between Low and High Grade Cervical Squamous Intraepithelial Lesions (SIL) and High Risk HPV Related SIL. PLoS One 2017; 12:e0170626. [PMID: 28118377 PMCID: PMC5261776 DOI: 10.1371/journal.pone.0170626] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 01/07/2017] [Indexed: 01/10/2023] Open
Abstract
Background γH2AX is a protein biomarker for double-stranded DNA breakage; its expression was studied in cervical squamous intraepithelial lesions and carcinomas. Methods Immunostaining for phospho-γH2AX was performed in sections from histologically confirmed cervical SIL and carcinomas, as well as from normal cervices used as controls. In total, 275 cases were included in the study: 112 low grade SIL (LGSIL), 99 high grade SIL (HGSIL), 24 squamous cell carcinoma (SCC), 12 adenocarcinoma and 28 cervical specimens with no essential lesions. Correlation of histological grading, high risk vs. low risk HPV virus presence, activated vs. non-activated status (by high risk HPV mRNA expression) and γH2AX expression in both basal and surface segments of the squamous epithelium was performed. Results Gradual increase of both basal and surface γH2AX expression was noted up from normal cervices to LGSIL harboring a low risk HPV type, to LGSIL harboring a high risk virus at a non-activated state (p<0.05). Thereafter, both basal and surface γH2AX expression dropped in LGSIL harboring a high risk virus at an activated state and in HGSIL. Conclusions γH2AX could serve as a potential biomarker discriminating between LGSIL and HGSIL, as well as between LGSIL harboring high risk HPV at an activated state.
Collapse
Affiliation(s)
- Konstantinos Leventakos
- 2 Department of Pathology, University Hospital “Attikon”, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
- 4 Department of Internal Medicine, University Hospital “Attikon”, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Sotirios Tsiodras
- 4 Department of Internal Medicine, University Hospital “Attikon”, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
- * E-mail:
| | - Theodore Kelesidis
- 4 Department of Internal Medicine, University Hospital “Attikon”, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Maria Kefala
- 2 Department of Pathology, University Hospital “Attikon”, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Christine Kottaridi
- Department of Cytopathology, University Hospital “Attikon”, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Aris Spathis
- Department of Cytopathology, University Hospital “Attikon”, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Alina-Roxani Gouloumi
- 2 Department of Pathology, University Hospital “Attikon”, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Abraham Pouliakis
- Department of Cytopathology, University Hospital “Attikon”, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Asimakis Pappas
- 3 Department of Obstetrics and Gynecology, University Hospital “Attikon”, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Vasileios Sioulas
- 3 Department of Obstetrics and Gynecology, University Hospital “Attikon”, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Charalambos Chrelias
- 3 Department of Obstetrics and Gynecology, University Hospital “Attikon”, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Petros Karakitsos
- Department of Cytopathology, University Hospital “Attikon”, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Ioannis Panayiotides
- 2 Department of Pathology, University Hospital “Attikon”, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| |
Collapse
|
33
|
Spathis A, Kottaridi C, Pouliakis A, Archondakis S, Karakitsos P. HPV Detection Methods. Oncology 2017. [DOI: 10.4018/978-1-5225-0549-5.ch008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Human papilloma viruses (HPVs) have been acknowledged to be the leading risk factor of cervical intra-epithelial lesion creation (CIN) and cervical cancer development (CxCa). Many different techniques have been created and utilized in HPV detection and monitoring with a vast amount of them being commercialized and few of them integrated in official screening strategies. A growing trend for DNA typing of the 14 most commonly accepted high risk HPV types has been introduced, supporting that in many cases molecular testing could replace classic morphologic diagnostic routines, even though DNA detection has lower specificity than other molecular and morphology tests. However, there have been limited attempts in combining data from all different techniques to provide efficient patient triaging schemes, since, apart from the obvious increase of patient cost, the amount of data and its interpretation in patient management has been impossible. Complex computer based clinical support decision systems, many of which are based on artificial intelligence may abolish these limitations.
Collapse
|
34
|
Bacopoulou F, Karakitsos P, Kottaridi C, Stefanaki C, Deligeoroglou E, Theodoridou K, Chrousos GP, Michos A. Genital HPV in Children and Adolescents: Does Sexual Activity Make a Difference? J Pediatr Adolesc Gynecol 2016; 29:228-33. [PMID: 26342734 DOI: 10.1016/j.jpag.2015.08.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Revised: 08/02/2015] [Accepted: 08/27/2015] [Indexed: 10/23/2022]
Abstract
STUDY OBJECTIVE To compare the prevalence of human papillomavirus (HPV) genital infection among prepubertal children, sexually active and not sexually active adolescents, and assess potential risk factors for transmission. DESIGN Prospective study. SETTING Outpatient adolescent health clinic. PARTICIPANTS Ninety-five girls aged 2-21 years; 38 sexually active adolescents (group A), 28 not sexually active adolescents (group B), and 29 prepubertal children (group C). INTERVENTIONS Participants' vaginal or cervical specimens were tested for HPV with the CLART HPV 2 assay (Clinical Array Technology, Genomica, Madrid, Spain) and for cytological abnormalities with liquid-based cytology. MAIN OUTCOME MEASURES Differences in prevalence of low- and high-risk HPV infections among the 3 groups. RESULTS Genital HPV was detected in 37.9% (36/95) of all participants; 47.4% (18/38) of group A, 28.6% (8/28) of group B, and 34.5% (10/29)of group C (P = .27). Multiple HPV infection was detected in 26.3% (10/38), 10.7% (3/28), and 13.8% (4/29) of groups A, B, and C, respectively (P = .21). High-risk genotypes were detected in 47.4% (18/38), 28.6% (8/28), and 24.1% (7/29) of groups A, B, and C, respectively (P = .10). Main high-risk genotypes were HPV 16 (27%, 10/37), HPV 31 (21.6%, 8/37 ), HPV 35 (13.5%, 5/37), HPV 53 (13.5%, 5/37), and low-risk HPV 6 (18.9%, 7/37). Sexual activity was associated with increased risk for genital high-risk HPV infection (odds ratio = 3.41; 95% confidence interval, 1.19-9.78); specifically with HPV 33 and HPV 51. Forty percent of sexually active adolescents with normal cervical cytology were infected with high-risk HPV types. Family history of skin HPV was positively associated with genital HPV in the sexually active group (odds ratio = 2.01; 95% confidence interval, 1.17-3.46). CONCLUSION Timeline and target population for HPV vaccination might need to be reappraised, in view of significant nonsexual transmission of genital HPV so early in childhood.
Collapse
Affiliation(s)
- Flora Bacopoulou
- Center for Adolescent Medicine and United Nations Educational, Scientific and Cultural Organization (UNESCO) Chair on Adolescent Health Care, First Department of Pediatrics, University of Athens, Aghia Sophia Children's Hospital, Athens, Greece.
| | - Petros Karakitsos
- Department of Cytopathology, Attikon University Hospital, Athens, Greece
| | | | - Charikleia Stefanaki
- Center for Adolescent Medicine and United Nations Educational, Scientific and Cultural Organization (UNESCO) Chair on Adolescent Health Care, First Department of Pediatrics, University of Athens, Aghia Sophia Children's Hospital, Athens, Greece
| | - Efthymios Deligeoroglou
- Center for Adolescent Medicine and United Nations Educational, Scientific and Cultural Organization (UNESCO) Chair on Adolescent Health Care, First Department of Pediatrics, University of Athens, Aghia Sophia Children's Hospital, Athens, Greece
| | - Kalliopi Theodoridou
- Center for Adolescent Medicine and United Nations Educational, Scientific and Cultural Organization (UNESCO) Chair on Adolescent Health Care, First Department of Pediatrics, University of Athens, Aghia Sophia Children's Hospital, Athens, Greece
| | - George P Chrousos
- Center for Adolescent Medicine and United Nations Educational, Scientific and Cultural Organization (UNESCO) Chair on Adolescent Health Care, First Department of Pediatrics, University of Athens, Aghia Sophia Children's Hospital, Athens, Greece
| | - Athanasios Michos
- Division of Infectious Diseases, First Department of Pediatrics, University of Athens, Aghia Sophia Children's Hospital, Athens, Greece
| |
Collapse
|
35
|
Giachnaki M, Athanasiadi E, Pouliakis A, Spathis A, Kottaridi C. Comparative Analysis of Conventional and Thin Prep Papanicolaou Test. Technical and Economic Aspects. ACTA ACUST UNITED AC 2016. [DOI: 10.17352/acp.000003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
36
|
Douros K, Kotzia D, Kottaridi C, Giotas A, Boutopoulou B, Karakitsos P, Priftis KΝ. Many children aged two to five years have a persistent presence of respiratory viruses in their nasopharynx. Acta Paediatr 2016; 105:e89-92. [PMID: 26540231 PMCID: PMC7159633 DOI: 10.1111/apa.13259] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2015] [Revised: 08/24/2015] [Accepted: 10/30/2015] [Indexed: 12/01/2022]
Affiliation(s)
- Konstantinos Douros
- Pediatric Allergy and Respiratory Unit; 3rd Department of Pediatrics; University General Hospital ‘Attikon’; School of Medicine; National and Kapodistrian University of Athens; Athens Greece
| | - Doxa Kotzia
- Pediatric Allergy and Respiratory Unit; 3rd Department of Pediatrics; University General Hospital ‘Attikon’; School of Medicine; National and Kapodistrian University of Athens; Athens Greece
| | - Christine Kottaridi
- Department of Cytopathology; University General Hospital ‘Attikon’; University of Athens School of Medicine; Athens Greece
| | - Apostolos Giotas
- Pediatric Allergy and Respiratory Unit; 3rd Department of Pediatrics; University General Hospital ‘Attikon’; School of Medicine; National and Kapodistrian University of Athens; Athens Greece
| | - Barbara Boutopoulou
- Pediatric Allergy and Respiratory Unit; 3rd Department of Pediatrics; University General Hospital ‘Attikon’; School of Medicine; National and Kapodistrian University of Athens; Athens Greece
| | - Petros Karakitsos
- Department of Cytopathology; University General Hospital ‘Attikon’; University of Athens School of Medicine; Athens Greece
| | - Kostas Ν. Priftis
- Pediatric Allergy and Respiratory Unit; 3rd Department of Pediatrics; University General Hospital ‘Attikon’; School of Medicine; National and Kapodistrian University of Athens; Athens Greece
| |
Collapse
|
37
|
Tsantes AE, Ikonomidis I, Papadakis I, Bonovas S, Gialeraki A, Kottaridi C, Kyriakou E, Kokori S, Douramani P, Kopterides P, Karakitsos P, Lekakis J, Kapsimali V. Impact of the proton pump inhibitors and CYP2C19*2 polymorphism on platelet response to clopidogrel as assessed by four platelet function assays. Thromb Res 2013; 132:e105-11. [DOI: 10.1016/j.thromres.2013.06.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Revised: 05/17/2013] [Accepted: 06/16/2013] [Indexed: 10/26/2022]
|
38
|
Gkirkas K, Bakou V, Spathis A, Kottaridi C, Kontsioti F, Kontos C, Papageorgiou S, Bouhla A, Papanikolaou N, Atta M, Ioannidou E, Roubakis C, Stamouli M, Economopoulos T, Dimitriadis G, Pappa V. P-024 Analysis of apoptosis and mitochondrial cytochrome C-oxidase gene mutations in bone marrow cells of patients with myelodysplastic syndromes. Leuk Res 2013. [DOI: 10.1016/s0145-2126(13)70073-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
39
|
Spathis A, Kottaridi C, Chranioti A, Meristoudis C, Chrelias C, Panayiotides IG, Paraskevaidis E, Karakitsos P. mRNA and DNA detection of human papillomaviruses in women of all ages attending two colposcopy clinics. PLoS One 2012; 7:e49205. [PMID: 23166611 PMCID: PMC3499555 DOI: 10.1371/journal.pone.0049205] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2012] [Accepted: 10/07/2012] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE HPV infection is a common finding, especially in young women while the majority of infections are cleared within a short time interval. The aim of this study was to examine the efficacy of HPV DNA and mRNA testing in a population attending colposcopy units of two University hospitals. METHODS 1173 liquid based cervical samples from two colposcopy clinics were tested for HPV DNA positivity using a commercial typing kit and HPV E6/E7 mRNA positivity with a flow cytometry based commercial kit. Statistic measures were calculated for both molecular tests and morphological cytology and colposcopy diagnosis according to histology results. RESULTS HPV DNA, high-risk HPV DNA, HPV16 or 18 DNA and HPV mRNA was detected in 55.5%, 50.6%, 20.1% and 29.7% of the cervical smears respectively. Concordance between the DNA and the mRNA test was 71.6% with their differences being statistically significant. Both tests' positivity increased significantly as lesion grade progressed and both displayed higher positivity rates in samples from women under 30 years old. mRNA testing displayed similar NPV, slightly lower sensitivity but significantly higher specificity and PPV than DNA testing, except only when DNA positivity for either HPV16 or 18 was used. CONCLUSIONS Overall mRNA testing displayed higher clinical efficacy than DNA testing, either when used as a reflex test or as an ancillary test combined with morphology. Due to enhanced specificity of mRNA testing and its comparable sensitivity in ages under 25 or 30 years old, induction of mRNA testing in young women could be feasible if a randomized trial verifies these results.
Collapse
Affiliation(s)
- Aris Spathis
- Department of Cytopathology, University General Hospital "ATTIKON", School of Medicine, National and Kapodistrian University of Athens, Chaidari, Greece.
| | | | | | | | | | | | | | | |
Collapse
|
40
|
Tsantes A, Ikonomidis I, Papadakis I, Kottaridi C, Tsante A, Kalamara E, Kardoulaki A, Kopterides P, Kapsimali V, Karakitsos P, Lekakis J, Travlou A. Evaluation of the role of the new INNOVANCE PFA P2Y test cartridge in detection of clopidogrel resistance. Platelets 2012; 23:481-9. [DOI: 10.3109/09537104.2012.689037] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
41
|
Kottaridi C, Spathis AT, Ntova CK, Papaevangelou V, Karakitsos P. Evaluation of a multiplex real time reverse transcription PCR assay for the detection and quantitation of the most common human rotavirus genotypes. J Virol Methods 2012; 180:49-53. [PMID: 22245180 DOI: 10.1016/j.jviromet.2011.12.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2011] [Revised: 12/07/2011] [Accepted: 12/14/2011] [Indexed: 01/04/2023]
Abstract
Group A rotaviruses (RVs) are important pathogens that cause acute, dehydrating gastroenteritis in infants and young children. In this study, a multiplex real-time polymerase chain reaction protocol using primers and TaqMan(®) probes specific for viral VP4 and VP7 genes was evaluated. This assay offers simultaneous genotyping and quantification of the most common RV genotypes G1P[8], G2P[4], G3P[8], G4P[8], and G9P[8]. It was compared to the molecular typing results provided by conventional PCR. A total of 92 archived stool specimens obtained from children younger than 5 years old with the diagnosis of acute gastroenteritis were examined. Real-time PCR assay detected rotavirus strains among the most common genotype combinations G4P[8] (70.7%), G1P[8] (10.9%), G2P[4] (5.4%), G9P[8] (2.2%). This new assay described has an acceptable sensitivity (low limit 6.3×10(2)copies/g of stool).
Collapse
Affiliation(s)
- Christine Kottaridi
- Department of Cytopathology, Attikon University Hospital, Athens University Medical School, Athens, Greece.
| | | | | | | | | |
Collapse
|
42
|
Ntova CK, Kottaridi C, Chranioti A, Spathis A, Kassanos D, Paraskevaidis E, Karakitsos P. Genetic variability and phylogeny of high risk HPV type 16, 18, 31, 33 and 45 L1 gene in Greek women. Int J Mol Sci 2011; 13:1-17. [PMID: 22312235 PMCID: PMC3269669 DOI: 10.3390/ijms13010001] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2011] [Revised: 11/25/2011] [Accepted: 12/05/2011] [Indexed: 11/23/2022] Open
Abstract
The present study explores nucleotide variability, phylogeny and association with cervical neoplasia in high risk HPV types 16, 18, 31, 33 and 45 collected from Greek women. Of the 1894 women undergoing routine cervical cytology examination, 160 samples test positive for single infections of HPV type 16 (n = 104), HPV 31 (n = 40), HPV 33 (n = 7), HPV 18 (n = 5), and HPV 45 (n = 4) were typed by microarrays method, amplified by PCR then sequenced and phylogenetically analyzed. For HPV 16, 9 variants with nucleotide variations were included into the study. For HPV 31, 33, 18 and 45, nucleotide variations were identified in 6, 4, 2 and 3 variants, respectively. The Bayesian inference and Maximum Parsimony methods were used in order to construct the phylogenetic trees. When types were analyzed independently HPV 16 (European and non-European) and HPV 18 (African and non-African) formed distinct clades. The genomic characterization of HPV variants will be important for illuminating the geographical relatedness and biological differences and for the determination of their risk.
Collapse
Affiliation(s)
- Chara Kleio Ntova
- Department of Cytopathology, Attikon General University Hospital, Athens University Medical School, Chaidari, 12462, Greece; E-Mails: (C.K.N.); (C.K.); (A.C.); (A.S.)
| | - Christine Kottaridi
- Department of Cytopathology, Attikon General University Hospital, Athens University Medical School, Chaidari, 12462, Greece; E-Mails: (C.K.N.); (C.K.); (A.C.); (A.S.)
| | - Aikaterini Chranioti
- Department of Cytopathology, Attikon General University Hospital, Athens University Medical School, Chaidari, 12462, Greece; E-Mails: (C.K.N.); (C.K.); (A.C.); (A.S.)
| | - Aris Spathis
- Department of Cytopathology, Attikon General University Hospital, Athens University Medical School, Chaidari, 12462, Greece; E-Mails: (C.K.N.); (C.K.); (A.C.); (A.S.)
| | - Dimitrios Kassanos
- 3rd Department of Obstetrics and Gynaecology, Attikon General University Hospital, Athens University Medical School, Chaidari, 12462, Greece; E-Mail:
| | - Evangelos Paraskevaidis
- Department of Obstetrics and Gynecology, Faculty of Medicine, University Hospital of Ioannina, Ioannina 45110, Greece; E-Mail:
| | - Petros Karakitsos
- Department of Cytopathology, Attikon General University Hospital, Athens University Medical School, Chaidari, 12462, Greece; E-Mails: (C.K.N.); (C.K.); (A.C.); (A.S.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +30-210-5831952; Fax: +30-210-5831942
| |
Collapse
|
43
|
Kottaridi C, Tsiodras S, Spathis A, Chranioti A, Pappas A, Kassanos D, Panayiotides I, Karakitsos P. Clinical performance of human papillomavirus E6, E7 mRNA flow cytometric assay compared to human papillomavirus DNA typing. Anal Quant Cytol Histol 2011; 33:305-310. [PMID: 22590807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
OBJECTIVE To use flow cytometry to screen cervical samples for the overexpression of human papillomavirus (HPV) E6 and E7 mRNA and compare the performance of this assay with an HPV DNA array for the detection of high-grade cervical lesions. STUDY DESIGN Cervical samples were analyzed for HPV DNA by clinical arrays, and the overexpression of E6 and E7 viral oncogenes was monitored using an HPV mRNA detection kit that quantifies the intracellular HPV E6 and E7 mRNA on a cell-by-cell basis. RESULTS HPV positivity increased with severity of histologic lesions. On the basis of histology-confirmed CIN 2+ cases the specificity of HPV assay was 73.9% (95% CI 66.07, 80.88), whereas it was 39.3% (95% CI 31.85, 47.1) for the DNA assay. CONCLUSION The HPV assay provides an early predictor of persistent HPV infection and may improve cervical cancer screening by increasing the specificity of detecting high-grade lesions.
Collapse
Affiliation(s)
- Christine Kottaridi
- Department of Cytopathology, Attikon University Hospital, Athens University Medical School, 1 Rimini Street, 12462 Chaidari, Athens, Greece.
| | | | | | | | | | | | | | | |
Collapse
|
44
|
Trimis G, Koutsoumbari I, Kottaridi C, Palaiologou N, Assimakopoulou E, Spathis A, Lebessi E, Konstantopoulos A, Kafetzis D, Karakitsos P, Papaevangelou V. Hospital-based surveillance of rotavirus gastroenteritis in the era of limited vaccine uptake through the private sector. Vaccine 2011; 29:7292-5. [PMID: 21816195 DOI: 10.1016/j.vaccine.2011.07.092] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2011] [Revised: 07/01/2011] [Accepted: 07/20/2011] [Indexed: 11/19/2022]
Abstract
To investigate possible impact of limited vaccine uptake by the private sector since 2007, a prospective observational study included all children <5 years hospitalized for acute gastroenteritis (AGE) in a Tertiary Care Hospital between 09/2006 and 08/2010. Rotavirus (RV) antigen was detected in stools by a rapid immunochromatographic test and genotype analysis was performed on positive samples by RT-PCR. Compared to 2006-2008, the likelihood of rotavirus infection was significantly reduced among children hospitalized for AGE in 2008-2010 (OR 0.64; 95%CI: 0.49-0.84, p<0.001). This was mainly due to the reduction of RVGE cases in infants 0-11 months (p=0.035). Moreover, RVGE cases as well as the rate of RVGE/10,000 hospitalized children significantly decreased (p=0.009 and p=0.010 respectively). No children with rotavirus gastroenteritis (RVGE) had received any vaccine dose. G4P [8] was the most common genotype (64/90). In conclusion, this study indicates that even low RV vaccination coverage may have significant effect.
Collapse
|
45
|
Spathis A, Kottaridi C, Georgoulakis J, Foukas P, Panayiotides I, Peros G, Karakitsos P. Cell cycle analysis of colorectal brushings collected in liquid-based cytology. Anal Quant Cytol Histol 2011; 33:29-35. [PMID: 22125844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
OBJECTIVE To evaluate the possibility of robust cell cycle analysis from liquid-based cytology samples. STUDY DESIGN Brushings were obtained after surgical resection of tumor samples. For each patient, one brushing sample was obtained from the macroscopically identified tumor, and a matched sample from a distant normal-appearing site. Cell suspensions were prepared for a time course series of experiments and from formalin-fixed paraffin-embedded tissue samples. RESULTS Optimal results could be obtained when the sample was analyzed on the day of collection, whereas cell cycle analysis could be easily performed when cells were stored in a methanol-water solution for < 3 days, with a small penalty on coefficiency of variation (CV) values. Further storage in liquid-based medium had a profound effect on cell cycle analysis. CV values of liquid-based medium out-performed those obtained from samples that were paraffin embedded. Aneuploidy was more common in men and from samples from the left colon. Near diploid cell populations were more common in samples from the right colon. CONCLUSION Liquid-based cytology fixation and preservation media that are methanol-based could serve as an ancillary collection medium, providing cell cycle data for colorectal carcinoma samples.
Collapse
Affiliation(s)
- Aris Spathis
- Department of Cytopathology, University General Hospital Attikon, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | | | | | | | | | | | | |
Collapse
|
46
|
Kottaridi C, Georgoulakis J, Kassanos D, Pappas A, Spathis A, Margari N, Aninos D, Karakitsos P. Use of flow cytometry as a quality control device for liquid-based cervical cytology specimens. Cytometry B Clin Cytom 2009; 78:37-40. [PMID: 19746413 DOI: 10.1002/cyto.b.20491] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Cervical cancer is the second most common cancer in women worldwide comprising a major concern of public health. Liquid-based cytology provides significantly more effective detection of low-grade intraepithelial neoplasia or more severe lesions, without loss of diagnostic specificity and reduces the number of cases classified as unsatisfactory. The objective of the study is the evaluation of flow cytometry as a rapid tool for quality control of the liquid specimen adequacy for the purpose of precise cytological diagnosis in detecting cervical abnormalities. METHODS A total of 1,854 women undergoing routine cervical cytology joined this cohort study. A monolayer smear was prepared and 1 ml aliquot was removed and prepared for flow cytometric analysis. Cells were fixed and run on a Partec CyFlow SL, with front scatter (FSS) and side scatter (SSC) set on logarithmic scale. The forward scatter versus side scatter dot-plot was used for the distinction of ectocervical, endocervical, and polymorphonuclear cells. RESULTS In the total of 1,854 cases, 15 specimens (0.8%) were characterized by the cytopathologist as unsatisfactory. Inadequacy was confirmed by flow cytometric analysis for four samples. Monolayer smears were reprepared for the remaining 11 samples. After the second microscopic observation, six out of the 11 cases (54.5%) were found to be satisfactory, whereas the remaining five were still designated as unsatisfactory by the cytopathologist. CONCLUSION The parallel screening of adequacy by quantification of cell populations with flow cytometry can serve as an internal control for diagnosis and can overall decrease the number of unsatisfactory samples.
Collapse
Affiliation(s)
- Christine Kottaridi
- Department of Diagnostic Cytopathology, University General Hospital Attikon, Chaidari, Athens, Greece
| | | | | | | | | | | | | | | |
Collapse
|
47
|
Abstract
The authors reviewthe epidemiology of sheep pox outbreaks in Greece between 1987 and 2007. It is believed that sheep pox is introduced into Greece principally from neighbouring countries to the east, and is associated with the movements of infected sheep flocks close to the border and contacts between humans and animals. Disease foci have appeared in several central and north-eastern areas of the country. Between 1982 and 1986, Greece remained free of sheep pox but, in 1987, the disease appeared on the island of Lesvos and, in 1988, outbreaks were seen in the prefecture of Evros. In 1994, a further outbreak occurred in Evros. Over the next four years, more outbreaks occurred in Evros and Thessaloniki (1995); Larissa, Xanthi, Rhodopi, Kavala, Magnissia, Evros and the island of Lesvos (1996); Kavala, Magnissia, Halkidiki, Evros and Rhodopi (1997). In 1998, there were fewer cases of sheep pox, with outbreaks only in the prefecture of Evros. Two years later, a further outbreak was reported in Evros (2000), while the most recent outbreak occurred on the island of Lesvos in January 2007.
Collapse
Affiliation(s)
- O Mangana
- Centre of Athens Veterinary Institutes, Institute of Infectious and Parasitic Diseases, Virology Department, 25 Neapoleos Street, 15310 Agia Paraskevi, Attiki, Greece.
| | | | | |
Collapse
|
48
|
Bolanaki E, Kottaridi C, Dedepsidis E, Kyriakopoulou Z, Pliaka V, Pratti A, Levidiotou-Stefanou S, Markoulatos P. Direct extraction and molecular characterization of enteroviruses genomes from human faecal samples. Mol Cell Probes 2008; 22:156-61. [PMID: 18378420 DOI: 10.1016/j.mcp.2007.12.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2007] [Revised: 12/12/2007] [Accepted: 12/14/2007] [Indexed: 11/19/2022]
Abstract
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 in cell culture is performed. A total of 54 archived faecal samples were examined. The heterogeneous nature of faecal samples may contribute to variations in the yields of viral nucleic acids with different extraction methods and specimen types. PCR inhibitors are frequently encountered in stool specimens. From the three methods initially compared for extraction of viral RNA, QIAamp Viral RNA Mini Kit was retained as it yielded the highest amount of viral RNA without the interference of RT-PCR inhibitors. Evaluation of 54 archived stool specimens by RT-PCR and cell culture resulted in a higher frequency of detection by RT-PCR. With the use of RT-PCR we were able to detect two additional samples otherwise considered negative for enterovirus isolation if only the cell culture standard methodology was employed. RNA extraction with QIAamp Viral RNA Mini Kit coupled with RT-PCR in the 5'NCR (subgrouping into distinct genetic clusters of all enteroviruses) and VP1 (reliable serotyping by sequencing) is a rapid and sensitive technique of direct poliovirus/non-polio enteroviruses recovery and molecular characterization from human faecal specimens without further passage in cell culture, which may select for genetic variants that may not accurately reflect the virus composition in the original specimen.
Collapse
Affiliation(s)
- Eugenia Bolanaki
- Department of Biochemistry & Biotechnology, Microbiology-Virology Laboratory, University of Thessaly, 26 Ploutonos & Aiolou Street, Larisa 41221, Greece
| | | | | | | | | | | | | | | |
Collapse
|
49
|
Dedepsidis E, Kyriakopoulou Z, Pliaka V, Kottaridi C, Bolanaki E, Levidiotou-Stefanou S, Komiotis D, Markoulatos P. Retrospective characterization of a vaccine-derived poliovirus type 1 isolate from sewage in Greece. Appl Environ Microbiol 2007; 73:6697-704. [PMID: 17827314 PMCID: PMC2074943 DOI: 10.1128/aem.00535-07] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Retrospective molecular and phenotypic characterization of a vaccine-derived poliovirus (VDPV) type 1 isolate (7/b/97) isolated from sewage in Athens, Greece, in 1997 is reported. VP1 sequencing of this isolate revealed 1.87% divergence from the VP1 region of reference strain Sabin 1, while further genomic characterization of isolate 7/b/97 revealed a recombination event in the nonstructural part of the genome between a vaccine strain and a nonvaccine strain probably belonging to Enterovirus species C. Amino acid substitutions commonly found in previous studies were identified in the capsid coding region of the isolate, while most of the attenuation and temperature sensitivity determinants were reverted. The ultimate source of isolate 7/b/97 is unknown. The recovery of such a highly divergent derivative of a vaccine strain emphasizes the need for urgent implementation of environmental surveillance as a supportive procedure in the polio surveillance system even in countries with high rates of OPV coverage in order to prevent cases or even outbreaks of poliomyelitis that otherwise would be inevitable.
Collapse
Affiliation(s)
- Evaggelos Dedepsidis
- Department of Biochemistry & Biotechnology, University of Thessaly, 26 Ploutonos & Aiolou Str., Larissa 41221, Greece
| | | | | | | | | | | | | | | |
Collapse
|
50
|
Kottaridi C, Bolanaki E, Kyriakopoulou Z, Dedepsidis E, Pratti A, Markoulatos P. Possible recombination and gene adaptation exchanges among clinical echovirus strains: crossing the temporal and topological barriers. Diagn Microbiol Infect Dis 2007; 58:407-12. [PMID: 17509801 DOI: 10.1016/j.diagmicrobio.2007.03.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2006] [Revised: 03/08/2007] [Accepted: 03/09/2007] [Indexed: 10/23/2022]
Abstract
Six echovirus strains belonging to serotypes echovirus 6, 13, and 30 were investigated in the present work by sequencing of the whole 2C gene and about 560 nt of the 5' part of 3-dimensional genomic region. Four of the 6 echovirus strains were epidemics, whereas 2 were from sporadic cases. The whole procedure was carried out by using nucleotide distance matrices and phylogeny software. The sequences obtained strengthen the observation that recent echovirus isolates differ significantly from prototype strains in the downstream regions of the genome and provides further evidence that nonstructural enterovirus genes are ubiquitous and may combine freely adapting genomic sequences that are not restricted from the place of isolates' origin. For diagnostic purposes, particular emphasis is given on the utility of sequencing downstream genes and comparison of them with corresponding genomic regions from enteroviral strains that circulated all over the world.
Collapse
Affiliation(s)
- Christine Kottaridi
- Department of Biochemistry and Biotechnology, University of Thessaly, 412 21 Larissa, Greece
| | | | | | | | | | | |
Collapse
|