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Tsitlakidis D, Katopodi T, Goulis DG, Papadimas I, Kritis A. Association of follicle-stimulating hormone receptor single nucleotide polymorphisms with fertility in Greek men. J Endocrinol Invest 2017; 40:721-726. [PMID: 28224403 DOI: 10.1007/s40618-017-0637-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 02/06/2017] [Indexed: 10/20/2022]
Abstract
BACKGROUND AND OBJECTIVE Although several epidemiological studies have been conducted, the impact of follicle-stimulating hormone receptor (FSHR) polymorphisms on male infertility remains unclear. The aim of this study was to investigate the prevalence of specific FSHR single nucleotide polymorphisms (SNPs) in the Greek population and associate the latter with the clinical phenotype. PATIENTS AND METHODS We enrolled 96 subjects: men with idiopathic non-obstructive azoospermia (n = 78) were compared with a control group of fertile men (n = 18) for SNPs in FSHR positions c.-29, c.566, c.919, and c.2039. The SNP in position 566 (c.566C > T) was assessed by polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP) and the other three SNPs (c.-29G > A, c.919A > G, c.2039A > G) with single-strand conformation polymorphism (SSCP); all of them were validated with DNA sequence. RESULTS No polymorphisms were detected in positions c.-29 and c.919 (c.-29G > A, c.919A > G). The heterozygous SNP (AG) at position 2039 was associated with different size of the right testis (p = 0.008). There was no association between the c.566C > T SNPs polymorphism and hormonal or semen parameters. The combination SNP 2039 AA with 566 CT revealed significant association with FSH and LH concentrations. CONCLUSIONS FSHR SNPs at positions c.-29, c.566, c.919, and c.2039 (c.-29G > A, c.566C > T, c.919A > G, c.2039A > G) do not appear to play specific roles in male infertility. Larger studies are needed to confirm these results.
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Affiliation(s)
- D Tsitlakidis
- Laboratory of Physiology, Faculty of Health Sciences, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece.
- Unit of Reproductive Endocrinology, First Department of Obstetrics and Gynecology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece.
- Diabetologie/Endokrinologie, III Medizinische Klinik, University Klinikum, Jena, Germany.
| | - T Katopodi
- Laboratory of Biology, Faculty of Health Sciences, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - D G Goulis
- Unit of Reproductive Endocrinology, First Department of Obstetrics and Gynecology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - I Papadimas
- Unit of Reproductive Endocrinology, First Department of Obstetrics and Gynecology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - A Kritis
- Laboratory of Physiology, Faculty of Health Sciences, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Blioumi E, Chatzidimitriou D, Pazartzi C, Katopodi T, Tzimagiorgis G, Emmanouil-Nikoloussi EN, Markopoulos A, Kalekou C, Lazaridis N, Diza E, Antoniades D. Detection and typing of human papillomaviruses (HPV) in malignant, dysplastic, nondysplastic and normal oral epithelium by nested polymerase chain reaction, immunohistochemistry and transitional electron microscopy in patients of northern Greece. Oral Oncol 2014; 50:840-7. [PMID: 25043883 DOI: 10.1016/j.oraloncology.2014.06.011] [Citation(s) in RCA: 16] [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] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 05/24/2014] [Accepted: 06/12/2014] [Indexed: 11/29/2022]
Abstract
OBJECTIVES To evaluate the role of HPV in oral carcinogenesis, we examined the prevalence of HPV in malignant, potentially malignant and normal oral epithelium and studied the relation of HPV prevalence with other factors obtained from the patient's records. MATERIALS AND METHODS Our material consisted of 291 tissue specimens from 258 individuals. From every individual formalin fixed and paraffin embedded tissues were examined by nested Polymerase Chain Reaction (NPCR) for the detection of HPV DNA and by immunohistochemistry (IHC) for the in situ detection of HPV L1 protein. Positive PCR products were sequenced in order to type HPVs. Also 33 fresh tissues were obtained, fixed and used to detect HPV particles by transitional electron microscopy (TEM). RESULTS HPV was detected in 32.9% of the tissue specimens by NPCR, in 4.7% by immunohistochemistry and in 28.1% by TEM. In detail, by nested PCR HPV L1 DNA was detected in 40% of normal tissues, 40% of fibromas, 35.8% of non-dysplastic leukoplakias, 31.6% of dysplastic leukoplakias and 22.2% of oral squamous cell carcinomas. The HPV viral load of 96.5% of the samples was very low (1 viral copy per 10(2)-10(4) cells). HPV16 prevails in all histological groups in 89-100%. CONCLUSION We conclude that HPV does not seem, from the specific sample examined, to play a substantial role in oral carcinogenesis. However, it cannot be excluded that HPV could be involved in oral carcinogenesis only in cases with high viral load or at early stages of carcinogenesis possibly through the hit-and-run mechanism.
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Affiliation(s)
- E Blioumi
- Department of Stomatology, School of Dentistry, Aristotle University of Thessaloniki, Greece.
| | - D Chatzidimitriou
- B' Department of Microbiology, School of Medicine, Aristotle University of Thessaloniki, Greece
| | - Ch Pazartzi
- Department of Molecular Biology, School of Biology, Aristotle University of Thessaloniki, Greece
| | - Th Katopodi
- Department of Biology, School of Medicine, Aristotle University of Thessaloniki, Greece
| | - G Tzimagiorgis
- Department of Biochemistry, School of Medicine, Aristotle University of Thessaloniki, Greece
| | - E-N Emmanouil-Nikoloussi
- Department of Histology, Embryology and Anthropology, School of Medicine, Aristotle University of Thessaloniki, Greece
| | - A Markopoulos
- Department of Stomatology, School of Dentistry, Aristotle University of Thessaloniki, Greece
| | - C Kalekou
- Department of Stomatology, School of Dentistry, Aristotle University of Thessaloniki, Greece
| | - N Lazaridis
- Department of Orofacial Surgery, School of Dentistry, Aristotle University of Thessaloniki, Greece
| | - E Diza
- Department of Microbiology, AHEPA University General Hospital of Thessaloniki, Greece
| | - D Antoniades
- Department of Stomatology, School of Dentistry, Aristotle University of Thessaloniki, Greece
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Melas IN, Chairakaki AD, Chatzopoulou EI, Messinis DE, Katopodi T, Pliaka V, Samara S, Mitsos A, Dailiana Z, Kollia P, Alexopoulos LG. Modeling of signaling pathways in chondrocytes based on phosphoproteomic and cytokine release data. Osteoarthritis Cartilage 2014; 22:509-18. [PMID: 24457104 DOI: 10.1016/j.joca.2014.01.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 01/02/2014] [Accepted: 01/07/2014] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Chondrocyte signaling is widely identified as a key component in cartilage homeostasis. Dysregulations of the signaling processes in chondrocytes often result in degenerative diseases of the tissue. Traditionally, the literature has focused on the study of major players in chondrocyte signaling, but without considering the cross-talks between them. In this paper, we systematically interrogate the signal transduction pathways in chondrocytes, on both the phosphoproteomic and cytokine release levels. METHODS The signaling pathways downstream 78 receptors of interest are interrogated. On the phosphoproteomic level, 17 key phosphoproteins are measured upon stimulation with single treatments of 78 ligands. On the cytokine release level, 55 cytokines are measured in the supernatant upon stimulation with the same treatments. Using an Integer Linear Programming (ILP) formulation, the proteomic data is combined with a priori knowledge of proteins' connectivity to construct a mechanistic model, predictive of signal transduction in chondrocytes. RESULTS We were able to validate previous findings regarding major players of cartilage homeostasis and inflammation (e.g., IL1B, TNF, EGF, TGFA, INS, IGF1 and IL6). Moreover, we studied pro-inflammatory mediators (IL1B and TNF) together with pro-growth signals for investigating their role in chondrocytes hypertrophy and highlighted the role of underreported players such as Inhibin beta A (INHBA), Defensin beta 1 (DEFB1), CXCL1 and Flagellin, and uncovered the way they cross-react in the phosphoproteomic level. CONCLUSIONS The analysis presented herein, leveraged high throughput proteomic data via an ILP formulation to gain new insight into chondrocytes signaling and the pathophysiology of degenerative diseases in articular cartilage.
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Affiliation(s)
- I N Melas
- Mechanical Engineering Department, National Technical University of Athens, Athens, Greece; Protatonce Ltd., Athens, Greece
| | - A D Chairakaki
- Mechanical Engineering Department, National Technical University of Athens, Athens, Greece
| | - E I Chatzopoulou
- Mechanical Engineering Department, National Technical University of Athens, Athens, Greece
| | - D E Messinis
- Mechanical Engineering Department, National Technical University of Athens, Athens, Greece; Protatonce Ltd., Athens, Greece
| | - T Katopodi
- Mechanical Engineering Department, National Technical University of Athens, Athens, Greece
| | | | - S Samara
- Department of Genetics & Biotechnology, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - A Mitsos
- AVT Process Systems Engineering (SVT), RWTH Aachen University, Aachen, Germany
| | - Z Dailiana
- Department of Orthopaedic Surgery, University of Thessalia, Larissa, Greece
| | - P Kollia
- Department of Genetics & Biotechnology, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - L G Alexopoulos
- Mechanical Engineering Department, National Technical University of Athens, Athens, Greece.
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Antoniades D, Katopodi T, Pappa S, Lampropoulos A, Konsta V, Frydas E, Mpalogiannis S, Hatzistilianou M. The role of reelin gene polymorphisms in the pathogenesis of Alzheimer's disease in a Greek population. J BIOL REG HOMEOS AG 2011; 25:351-358. [PMID: 22023759] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Reelin is an extracellular signaling glycoprotein, which plays a significant role in cytoarchitectonic pattern formation of different brain areas during development. Reelin gene is located on chromosome 7q22. The aim of this study is to investigate the possible association of the following reelin polymorphisms SNP Intron12A/C (rs727531), SNP Exon15A/G (rs2072403), SNP Intron15G/T (rs2072402), SNP Exon22c/g (rs362691), SNP Intron41G/T (rs362719) and SNP Intron59C/T (rs736707) in the pathogenesis of Alzheimer 's disease and the frequency of these polymorphisms in the population of Northern Greece. The study included two groups, A and B. Group A consisted of 50 patients with Alzheimer 's disease and group B of 70 healthy controls. Genomic DNA isolated from blood was used for PCR and subsequent RFLP analysis. According to our results, the exon 22 C/G marker of Reelin is significantly associated with Alzheimer 's disease in the Greek population but the Likelihood Ratio Test shows that the GT haplotype ++ this polymorphism does not affect the phenotype of group A in relation to Group B. This is the first report on a Greek population-based approach.
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Affiliation(s)
- D Antoniades
- Department of General Biology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Magopoulos C, Katopodi T, Iordanidis F, Dimitrakopoulos I. P.189 Molecular and immunohistochemical analysis of second primary tumours in oral squamous cell carcinoma. J Craniomaxillofac Surg 2006. [DOI: 10.1016/s1010-5182(06)60697-5] [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: 10/23/2022] Open
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Affiliation(s)
- J Dimitrakopoulos
- Department of Oral and Maxillofacial Surgery, Aristotle University of Thessaloniki, Greece
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