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Mavrogenis G, Chatzis M, Spanomanoli A, Kaklamanis L, Bazerbachi F. Submucosal tunneling endoscopic resection in retroflexion for gastric gastrointestinal stromal tumor of the fundus. Endoscopy 2024; 56:E305-E306. [PMID: 38569503 PMCID: PMC10990602 DOI: 10.1055/a-2271-5816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Affiliation(s)
- Georgios Mavrogenis
- Unit of Hybrid Interventional Endoscopy, Department of Gastroenterology, Mediterraneo Hospital, Athens, Greece
| | - Marinos Chatzis
- Department of Anesthesiology, Mediterraneo Hospital, Athens, Greece
| | - Anna Spanomanoli
- Department of Anesthesiology, Mediterraneo Hospital, Athens, Greece
| | | | - Fateh Bazerbachi
- Interventional Endoscopy Program, St. Cloud Hospital, CentraCare Health System, St Cloud, United States
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2
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Mavrogenis G, Ntourakis D, Kritikos N, Kasapidis P, Kaklamanis L, Kouloulias V, Bazerbachi F. Salvage endoscopic wide-field full-thickness resection of T2 rectal cancer with endoscopic submucosal dissection instruments, without defect closure. Endoscopy 2023; 55:E751-E752. [PMID: 37286179 PMCID: PMC10247307 DOI: 10.1055/a-2081-9081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Affiliation(s)
- Georgios Mavrogenis
- Unit of Hybrid Interventional Endoscopy, Department of Gastroenterology, Mediterraneo Hospital, Athens, Greece
| | - Dimitrios Ntourakis
- School of Medicine, European University Cyprus, Nicosia, Cyprus
- Department of Surgery, Mediterraneo Hospital, Athens, Greece
| | | | - Panagiotis Kasapidis
- Unit of Hybrid Interventional Endoscopy, Department of Gastroenterology, Mediterraneo Hospital, Athens, Greece
| | | | | | - Fateh Bazerbachi
- CentraCare, Interventional Endoscopy Program, St. Cloud Hospital, St. Cloud, Minnesota, USA
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3
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Mavrogenis G, Maurommatis E, Koumentakis C, Kaklamanis L, Tsevgas I, Zachariadis D, Bazerbachi F. Submucosal tunneling endoscopic resection for rectal gastrointestinal stromal tumor. Endoscopy 2023; 55:E619-E620. [PMID: 37040883 PMCID: PMC10089791 DOI: 10.1055/a-2055-1102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/13/2023]
Affiliation(s)
- Georgios Mavrogenis
- Unit of Hybrid Interventional Endoscopy, Department of Gastroenterology, Mediterraneo Hospital, Athens, Greece
| | | | - Charalampos Koumentakis
- Unit of Hybrid Interventional Endoscopy, Department of Gastroenterology, Mediterraneo Hospital, Athens, Greece
| | | | - Ioannis Tsevgas
- Unit of Hybrid Interventional Endoscopy, Department of Gastroenterology, Mediterraneo Hospital, Athens, Greece
| | - Dimitrios Zachariadis
- Unit of Hybrid Interventional Endoscopy, Department of Gastroenterology, Mediterraneo Hospital, Athens, Greece
| | - Fateh Bazerbachi
- CentraCare, Interventional Endoscopy Program, St. Cloud Hospital, St Cloud, Minnesota, USA
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Leontiadis E, Kogerakis N, Gkouziouta A, Fragoulis S, Falara A, Zarkalis D, Tsourelis L, Bonios M, Kaklamanis L, Degiannis D, Chamogeorgakis T, Antoniou T, Adamopoulos S. Retransplantation in Greece: Ethical and practical considerations. Hellenic J Cardiol 2023; 74:81-82. [PMID: 37429504 DOI: 10.1016/j.hjc.2023.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 06/15/2023] [Accepted: 07/05/2023] [Indexed: 07/12/2023] Open
Affiliation(s)
- Evangelos Leontiadis
- Department of Heart Transplantation and Mechanical Circulatory Support, Onassis Cardiac Surgery Center, Greece.
| | - Nektarios Kogerakis
- Department of Heart Transplantation and Mechanical Circulatory Support, Onassis Cardiac Surgery Center, Greece
| | - Angeliki Gkouziouta
- Department of Heart Transplantation and Mechanical Circulatory Support, Onassis Cardiac Surgery Center, Greece
| | - Socrates Fragoulis
- Department of Heart Transplantation and Mechanical Circulatory Support, Onassis Cardiac Surgery Center, Greece
| | - Areti Falara
- Department of Anesthesiology, Onassis Cardiac Surgery Center, Greece
| | - Dimitrios Zarkalis
- Department of Heart Transplantation and Mechanical Circulatory Support, Onassis Cardiac Surgery Center, Greece
| | - Loukas Tsourelis
- Department of Heart Transplantation and Mechanical Circulatory Support, Onassis Cardiac Surgery Center, Greece
| | - Michael Bonios
- Department of Heart Transplantation and Mechanical Circulatory Support, Onassis Cardiac Surgery Center, Greece
| | | | - Dimitrios Degiannis
- Department of Molecular Immunopathology and Histocompatibility, Onassis Cardiac Surgery Center, Greece
| | - Themistoklis Chamogeorgakis
- Department of Heart Transplantation and Mechanical Circulatory Support, Onassis Cardiac Surgery Center, Greece
| | - Theofani Antoniou
- Department of Anesthesiology, Onassis Cardiac Surgery Center, Greece
| | - Stamatis Adamopoulos
- Department of Heart Transplantation and Mechanical Circulatory Support, Onassis Cardiac Surgery Center, Greece
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Papiris SA, Louvrier C, Fabre A, Kaklamanis L, Tsangaris I, Frantzeskaki F, Dimeas IE, Debray MP, Karakontaki F, Kallieri M, Kolilekas L, Daniil Z, Giatromanolaki A, Kannengiesser C, Borie R, Nathan N, Griese M, Manali ED. CSF2RB mutation-related hereditary pulmonary alveolar proteinosis: the "long and winding road" into adulthood. ERJ Open Res 2023; 9:00703-2023. [PMID: 38111540 PMCID: PMC10726220 DOI: 10.1183/23120541.00703-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 10/03/2023] [Indexed: 12/20/2023] Open
Abstract
Genetic analysis pre-lung transplantation diagnosed a case of hereditary pulmonary alveolar proteinosis (PAP) complicated by fibrosis in adulthood. The need for genetic testing in GM-CSF autoantibody negative and unclassifiable PAP is highlighted. https://bit.ly/3QcsYwM.
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Affiliation(s)
- Spyros A. Papiris
- 2nd Pulmonary Department, General University Hospital “Attikon”, Medical School, National and Kapodistrian University of Athens, Athens, Greece
- These authors contributed equally to this work
| | - Camille Louvrier
- Sorbonne Université, Inserm, Laboratory of Childhood Genetic Disorders, UMR S933, Hôpital Armand-Trousseau, Paris, France
- Département de Génétique Médicale, Assistance Publique-Hôpitaux de Paris, Hôpital Armand-Trousseau, Paris, France
- These authors contributed equally to this work
| | - Aurélie Fabre
- Department of Pathology, St Vincent's University Hospital, Dublin, Ireland
- School of Medicine, University College Dublin, Dublin, Ireland
| | - Loukas Kaklamanis
- Heart Failure and Transplant Units, Onassis Cardiac Surgery Center, Athens, Greece
| | - Iraklis Tsangaris
- 2nd Department of Critical Care Medicine, General University Hospital “Attikon”, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Frantzeska Frantzeskaki
- 2nd Department of Critical Care Medicine, General University Hospital “Attikon”, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Ilias E. Dimeas
- Department of Respiratory Medicine, Faculty of Medicine, University of Thessaly, Biopolis, Larissa, Greece
| | - Marie-Pierre Debray
- Service de Radiologie, Hôpital Bichat, APHP, Paris, France
- INSERM, Unité 1152, Université de Paris, Paris, France
| | - Foteini Karakontaki
- 1st Respiratory Medicine Department, National and Kapodistrian University of Athens, Medical School, “Sotiria” Chest Hospital, Athens, Greece
| | - Maria Kallieri
- 2nd Pulmonary Department, General University Hospital “Attikon”, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | | | - Zoe Daniil
- Department of Respiratory Medicine, Faculty of Medicine, University of Thessaly, Biopolis, Larissa, Greece
| | - Alexandra Giatromanolaki
- Department of Pathology, Democritus University of Thrace, University Hospital of Alexandroupolis, Alexandroupolis, Greece
| | - Caroline Kannengiesser
- Département de Génétique, APHP Hôpital Bichat, Université de Paris, Paris, France
- INSERM UMR 1152, Université de Paris, Paris, France
| | - Raphael Borie
- Service de Pneumologie A, INSERM UMR_1152, Centre de Référence des Maladies Pulmonaires Rares, FHU APOLLO, APHP Hôpital Bichat, Sorbonne Université, Paris, France
| | - Nadia Nathan
- Pediatric Pulmonology Department and Reference Centre for Rare Lung Diseases RespiRare, INSERM UMR_S933 Laboratory of Childhood Genetic Diseases, Armand Trousseau Hospital, Sorbonne University and APHP, Paris, France
| | - Matthias Griese
- Department of Pediatric Pneumology, Dr von Hauner Children's Hospital, Ludwig-Maximilians-University, German Center for Lung Research, Munich, Germany
| | - Effrosyni D. Manali
- 2nd Pulmonary Department, General University Hospital “Attikon”, Medical School, National and Kapodistrian University of Athens, Athens, Greece
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Stergiopoulou D, Smilkou S, Georgoulias V, Kaklamanis L, Lianidou E, Markou A. Development and Validation of a Novel Dual-Drop-off ddPCR Assay for the Simultaneous Detection of Ten Hotspots PIK3CA Mutations. Anal Chem 2023; 95:14068-14076. [PMID: 37681347 DOI: 10.1021/acs.analchem.3c02692] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
Breast cancer is the leading cause of cancer-related deaths in women worldwide. Approximately 40% of patients with hormone receptor-positive, human epidermal growth factor receptor-2-negative breast cancer have activating mutations in the PIK3CA gene. We developed a highly sensitive, specific, cost-effective, and reproducible dual-drop-off droplet digital polymerase chain reaction (PCR) assay for the simultaneous detection of ten hotspots of PIK3CA mutations in plasma cell-free (cf) DNA. We first evaluated the analytical specificity, sensitivity, limit of blank, repeatability, and reproducibility of the assay, which simultaneously detects seven mutations in exon9 and three in exon20. We further applied this assay in 11 gDNA and 18 plasma cfDNA samples from healthy donors and 35 plasma cfDNA samples from metastatic breast cancer patients. The assay is highly sensitive, specific, and applicable for clinical samples containing at least 1-5% mutant DNA. We detected PIK3CA mutations in 9/35(26%) plasma cfDNA samples in exon 9 and in 9/35(26%) in exon 20. Direct comparison of the developed assay with amplification refractory mutation system-based PCR (using plasma samples) and with the Food and Drug Administration-approved cobas PIK3CA mutation assay (using formalin fixed paraffin embedded samples) showed high concordance of our developed assay with the cobas PIK3CA assay. The developed assay is cost-effective and can reliably and simultaneously detect ten hotspot PIK3CA mutations in plasma cfDNA. The clinical performance of the assay will be further evaluated in liquid biopsy samples.
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Affiliation(s)
- Dimitra Stergiopoulou
- Analysis of Circulating Tumor Cells, Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771 Panepistimiopolis, Ilissia, Athens, Greece
| | - Stavroula Smilkou
- Analysis of Circulating Tumor Cells, Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771 Panepistimiopolis, Ilissia, Athens, Greece
| | - Vasilis Georgoulias
- First Department of Medical Oncology, Metropolitan General Hospital, 264 Mesogion Avenue, 15562 Cholargos, Athens, Greece
| | - Loukas Kaklamanis
- Department of Pathology, Onassis Cardiac Surgery Center, 356 Leof. Andrea Siggrou, 176 74 Kallithea, Athens, Greece
| | - Evi Lianidou
- Analysis of Circulating Tumor Cells, Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771 Panepistimiopolis, Ilissia, Athens, Greece
| | - Athina Markou
- Analysis of Circulating Tumor Cells, Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771 Panepistimiopolis, Ilissia, Athens, Greece
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Matralis AN, Kaklamanis L, Perrea D, Kourounakis AP. Effect of a new squalene synthase inhibitor on an ApoE -/- mouse model of atherosclerosis. Bioorg Med Chem 2023; 90:117378. [PMID: 37336084 DOI: 10.1016/j.bmc.2023.117378] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 06/01/2023] [Accepted: 06/09/2023] [Indexed: 06/21/2023]
Abstract
Ηypercholesterolemia/hyperlipidemia in conjunction with oxidative stress and inflammatory processes contribute synergistically to the pathogenesis of atherosclerosis. We hereby evaluated the antiatherosclerotic effect of the multi-target derivative 4-methyl-2-(10H-phenothiazin-3-yl)morpholin-2-ol hydrobromide 1 in apoE-/- mice; compound 1 is a potent antihyperlipidemic agent acting through Squalene Synthase inhibition, while it has exhibited an outstanding antioxidant and anti-inflammatory activity in various experimental animal models. The new analogue was evaluated in terms of its antiatherosclerotic/antioxidant effect in the ApoE-/- transgenic mouse model. Its toxicity profile was also assessed by measuring the levels of four sensitive indicators of liver toxicity. Prolonged administration of 1 in ApoE-/- mice fed with a western-type (wt) diet efficiently reduced the aortic atheromatic lesions, an effect that took place through a cholesterol lowering independent manner. In addition, 1 displayed a significant reduction not only of glucose but also of oxidative stress levels, while it did not cause any toxicity. To the best of our knowledge this is the first time that the antiatherosclerotic effect of a Squalene Synthase inhibitor is studied in this specific atherosclerosis mouse model. As a result, compound 1 may serve as a promising starting point towards developing new bioactive analogues against the onset and subsequent development of atherosclerosis.
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Affiliation(s)
- Alexios N Matralis
- Department of Medicinal Chemistry, Faculty of Pharmacy, National and Kapodistrian University of Athens, 15771 Athens, Greece; Bio-innovation Institute, Biomedical Sciences Research Center "Alexander Fleming", Vari, Athens, Greece.
| | - Loukas Kaklamanis
- Onassis Cardiac Surgery Center, Department of Pathology, Athens, Greece
| | - Despina Perrea
- Laboratory of Experimental Surgery and Surgical Research "N.S. Christeas", National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Angeliki P Kourounakis
- Department of Medicinal Chemistry, Faculty of Pharmacy, National and Kapodistrian University of Athens, 15771 Athens, Greece.
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Bonios MJ, Armenis I, Kogerakis N, Thodou A, Gkouziouta A, Koliopoulou A, Kaklamanis L, Chamogeorgakis T, Drakos SG, Adamopoulos SN. Phenotype Characterization and Course of Patients With Arrhythmogenic Right Ventricular Cardiomyopathy and Biventricular Advanced Heart Failure: A Report of 3 Cases. Transplant Proc 2022; 54:2347-2351. [PMID: 36195497 DOI: 10.1016/j.transproceed.2022.08.047] [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] [Received: 07/05/2022] [Revised: 08/24/2022] [Accepted: 08/26/2022] [Indexed: 11/15/2022]
Abstract
BACKGROUND Arrhythmogenic right ventricular cardiomyopathy (ARVC) may be complicated by heart failure. Management of advanced heart failure in this context is challenging. METHODS We reviewed our center's experience with advanced heart failure therapies in patients with ARVC. Three rapidly deteriorating patients with ARVC with biventricular heart failure were found. Their management and outcomes are presented. Data on ventricular fibrosis were available in 2 of them and are also included. RESULTS The first patient underwent initially successful paracorporeal pulsatile biventricular assist device (BiVAD) implantation. However, a large ischemic stroke occurred 2 weeks later, and the patient died after 2 months. The second patient underwent urgent BiVAD implantation after extracorporeal membrane oxygenation support because of cardiogenic shock, but his course was complicated by multiorgan failure due to systemic infection and the patient died. The last patient, being at Interagency Registry for Mechanically Assisted Circulatory Support 3-4 profile, underwent heart transplant with uneventful recovery. Extensive fibrosis was present in both ventricles of 2 patients undergoing pathology examination. CONCLUSIONS Patients with ARVC and advanced biventricular heart failure are characterized by extensive ventricular fibrosis and considerable risk, but data on their management are limited. Biventricular circulatory support is associated with suboptimal outcomes, and prioritization for heart transplant seems preferable.
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Affiliation(s)
- Michael J Bonios
- Heart Failure and Transplant Units, Onassis Cardiac Surgery Center, Athens, Greece.
| | - Iakovos Armenis
- Heart Failure and Transplant Units, Onassis Cardiac Surgery Center, Athens, Greece
| | - Nektarios Kogerakis
- Heart Failure and Transplant Units, Onassis Cardiac Surgery Center, Athens, Greece
| | - Aspasia Thodou
- Division of Cardiovascular Medicine, University of Utah Health and School of Medicine, Salt Lake City, Utah
| | - Angeliki Gkouziouta
- Heart Failure and Transplant Units, Onassis Cardiac Surgery Center, Athens, Greece
| | - Antigoni Koliopoulou
- Heart Failure and Transplant Units, Onassis Cardiac Surgery Center, Athens, Greece
| | - Loukas Kaklamanis
- Heart Failure and Transplant Units, Onassis Cardiac Surgery Center, Athens, Greece
| | | | - Stavros G Drakos
- Division of Cardiovascular Medicine, University of Utah Health and School of Medicine, Salt Lake City, Utah
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Mavrogenis G, Ntourakis D, Wang Z, Tsevgas I, Zachariadis D, Kokolas N, Kaklamanis L, Bazerbachi F. The learning experience for endoscopic submucosal dissection in a non-academic western hospital: a single operator's untutored, prevalence-based approach. Ann Gastroenterol 2021; 34:836-844. [PMID: 34815650 PMCID: PMC8596216 DOI: 10.20524/aog.2021.0649] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 03/11/2021] [Indexed: 12/26/2022] Open
Abstract
Background Studies of learning experience in endoscopic submucosal dissection (ESD) commonly originate from the East. Little is known about the performance of ESD in low-volume western centers. Furthermore, it is unclear whether ESD can be self-taught without a tutored approach. Methods We performed a retrospective analysis of consecutive ESDs, performed in an untutored prevalence-based fashion by a single operator at a private Greek hospital from 2016-2020. Out of 60 lesions, standard ESD was applied for 54 and enucleation for 6; 41 were mucosal and 19 submucosal; 3 esophageal, 24 gastric, one duodenal, 12 colonic, and 20 rectal. Results Pathology revealed carcinoma (n=14), neuroendocrine tumor (n=7), precancerous lesion (n=27), or other submucosal tumors (n=12). The rates of en bloc and R0 resection were 98% and 91%, respectively. The median resection speed was <3 cm2/h for the first 20 cases, but improved progressively to ≥9 cm2/h after 40 cases. Two patients underwent laparoscopic surgery for colonic perforation, and one received a blood transfusion because of delayed bleeding (serious adverse event rate: 5%). No deaths occurred. The median hospital stay was 1.3 days. Variables associated with improvement in ESD speed during the second period of the study were the application of countertraction and the experience acquired through other endosurgical techniques. Conclusions ESD was safe and effective in a low-volume center, with an acceptable adverse events rate. At least 40 mixed cases were needed to achieve a high resection speed. Additive experience gained through other endosurgical procedures probably contributed to the improvement in performance.
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Affiliation(s)
- Georgios Mavrogenis
- Division of Hybrid Interventional Endoscopy, Department of Gastroenterology, Mediterraneo Hospital, Athens, Greece (Georgios Mavrogenis, Ioannis Tsevgas, Dimitrios Zachariadis)
| | - Dimitrios Ntourakis
- Department of Surgery, School of Medicine, European University of Cyprus, Nicosia, Cyprus (Dimitrios Ntourakis)
| | - Zhen Wang
- Evidence-Based Practice Center, Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, MN, USA (Zhen Wang)
| | - Ioannis Tsevgas
- Division of Hybrid Interventional Endoscopy, Department of Gastroenterology, Mediterraneo Hospital, Athens, Greece (Georgios Mavrogenis, Ioannis Tsevgas, Dimitrios Zachariadis)
| | - Dimitrios Zachariadis
- Division of Hybrid Interventional Endoscopy, Department of Gastroenterology, Mediterraneo Hospital, Athens, Greece (Georgios Mavrogenis, Ioannis Tsevgas, Dimitrios Zachariadis)
| | - Nikolaos Kokolas
- Department of Anesthesiology, Mediterraneo Hospital, Athens, Greece (Nikolaos Kokolas)
| | - Loukas Kaklamanis
- Department of Pathology, Onassis Cardiac Surgery Center, Athens, Greece (Loukas Kaklamanis)
| | - Fateh Bazerbachi
- CentraCare, St Cloud Hospital, Interventional Endoscopy Program, St Cloud, MN, USA (Fateh Bazerbachi)
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Chaidaroglou A, Armenis I, Gkouziouta A, Bonios MJ, Kogerakis N, Fragoulis S, Leontiadis E, Zarkalis D, Stavridis G, Kaklamanis L, Adamopoulos S, Degiannis D. The effect of paracorporeal pulsatile biventricular assist devices on allosensitization in adults: A comparison with left ventricular assist devices. Transpl Immunol 2021; 69:101477. [PMID: 34600071 DOI: 10.1016/j.trim.2021.101477] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 09/27/2021] [Accepted: 09/27/2021] [Indexed: 11/19/2022]
Abstract
Ventricular assist devices (VADs) have been associated with the development of anti-HLA antibodies ('allosensitization'), but data on devices providing biventricular support in adults are limited. We sought to characterize differences in anti-HLA antibody formation in adult patients receiving left- (LVAD) versus biventricular- (BiVAD) assist devices as bridge to transplantation (BTT) by retrospectively reviewing the records of adult patients who have undergone VAD implantation at our institution. We assessed 82 patients supported with a pulsatile-flow paracorporeal BiVAD and compared them with 40 patients receiving LVAD till 2018. Forty-eight (58.5%) of the BiVAD and 23 (57.5%) of the LVAD patients were eventually transplanted (p = 0.91) with an average time to transplantation 559 and 598 days, respectively (p = 0.73). Evidence of sensitization pre-VAD was found in 11.0% of the BiVAD patients and 15.0% of the LVAD ones (p = 0.53); these percentages rose to 43.9% (p < 0.001) and 40.0% (p = 0.01), respectively. The post-VAD sensitization status was not significantly different between the BiVAD and the LVAD group (p = 0.68). De novo sensitization was comparable between the two groups (p = 0.55). Post-transplantation outcomes regarding rejections and cardiac allograft vasculopathy were also similar. Conclusively, BiVAD- and LVAD- induced allosensitization do not appear to differ significantly.
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Affiliation(s)
- Antigoni Chaidaroglou
- Department of Molecular Immunopathology and Histocompatibility, Onassis Cardiac Surgery Center, Greece
| | - Iakovos Armenis
- Department of Heart Transplantation and Mechanical Circulatory Support, Onassis Cardiac Surgery Center, Greece.
| | - Angeliki Gkouziouta
- Department of Heart Transplantation and Mechanical Circulatory Support, Onassis Cardiac Surgery Center, Greece
| | - Michael J Bonios
- Department of Heart Transplantation and Mechanical Circulatory Support, Onassis Cardiac Surgery Center, Greece
| | - Nektarios Kogerakis
- Department of Heart Transplantation and Mechanical Circulatory Support, Onassis Cardiac Surgery Center, Greece
| | - Socrates Fragoulis
- Department of Heart Transplantation and Mechanical Circulatory Support, Onassis Cardiac Surgery Center, Greece
| | - Evangelos Leontiadis
- Department of Heart Transplantation and Mechanical Circulatory Support, Onassis Cardiac Surgery Center, Greece
| | - Dimitrios Zarkalis
- Department of Heart Transplantation and Mechanical Circulatory Support, Onassis Cardiac Surgery Center, Greece
| | - Georgios Stavridis
- Department of Heart Transplantation and Mechanical Circulatory Support, Onassis Cardiac Surgery Center, Greece
| | | | - Stamatis Adamopoulos
- Department of Heart Transplantation and Mechanical Circulatory Support, Onassis Cardiac Surgery Center, Greece
| | - Dimitrios Degiannis
- Department of Molecular Immunopathology and Histocompatibility, Onassis Cardiac Surgery Center, Greece
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Mavrogenis G, Bazerbachi F, Kokolas N, Kaklamanis L. Wide-field endoscopic submucosal dissection for whole-antral and whole-incisura gastric multifocal dysplasia. Ann Gastroenterol 2021; 34:285. [PMID: 33654372 PMCID: PMC7903560 DOI: 10.20524/aog.2021.0588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Accepted: 11/20/2020] [Indexed: 11/11/2022] Open
Affiliation(s)
- Georgios Mavrogenis
- Department of Gastroenterology, Mediterraneo Hospital, Athens, Greece (Georgios Mavrogenis)
| | - Fateh Bazerbachi
- Department of Gastroenterology, Massachusetts General Hospital, Boston, USA (Fateh Bazerbachi)
| | - Nikolaos Kokolas
- Department of Anesthesiology, Mediterraneo Hospital, Athens, Greece (Nikolaos Kokolas)
| | - Loukas Kaklamanis
- Department of Pathology, Onassis Cardiac Surgery Center, Athens, Greece (Loukas Kaklamanis)
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12
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Samanidis G, Kanakis M, Kaklamanis L, Perrea DN. Intrathoracic schwannoma originating from intrathoracic vagus nerve. Clin Case Rep 2020; 8:3583-3585. [PMID: 33363989 PMCID: PMC7752450 DOI: 10.1002/ccr3.3287] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 07/28/2020] [Accepted: 08/11/2020] [Indexed: 11/30/2022] Open
Abstract
In differential diagnosis of posterior mediastinal mass should be included the intrathoracic vagus nerve tumor. Surgical excision of intrathoracic vagus nerve schwannoma is associated with a low recurrence rate and excellent long-term results.
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Affiliation(s)
- George Samanidis
- Department of Adult Cardiac SurgeryOnassis Cardiac Surgery CenterAthensGreece
- Laboratory of Experimental Surgery and Surgical Research “N.S Christeas”Athens Medical SchoolNational and Kapodistrian University of AthensAthensGreece
| | - Meletios Kanakis
- Department of Pediatric and Congenital Heart SurgeryOnassis Cardiac Surgery CenterAthensGreece
| | | | - Despina N. Perrea
- Laboratory of Experimental Surgery and Surgical Research “N.S Christeas”Athens Medical SchoolNational and Kapodistrian University of AthensAthensGreece
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Polymeris A, Kogia C, Ioannidis D, Lilis D, Drakou M, Maounis N, Kaklamanis L, Tseleni-Balafouta S. Excessive Leukocytosis Leading to a Diagnosis of Aggressive Thyroid Anaplastic Carcinoma: A Case Report and Relevant Review. Eur Thyroid J 2020; 9:162-168. [PMID: 32523893 PMCID: PMC7265710 DOI: 10.1159/000506767] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 12/04/2019] [Revised: 02/24/2020] [Indexed: 01/01/2023] Open
Abstract
INTRODUCTION Leukocytosis and particularly neutrophilia are usually caused by acute infection, inflammation, and myeloproliferative neoplasms. However, leukocytosis can also occur in patients with malignancy either due to bone marrow metastases or in the context of a paraneoplastic syndrome. CASE PRESENTATION An 86-year-old female was admitted to our hospital due to marked leukocytosis (white blood cells [WBC] >40,000/μL), neutrophilia, and monocytosis. She was afebrile and reported hoarseness and mild difficulty swallowing. Upon physical examination, lung auscultation revealed inspiratory wheezing and a non-tender mass was observed in the anterior midline of the neck. Blasts and immature WBC were not found, and polymerase chain reaction for the detection of BCR/ABL gene was negative. A mass (5.4 cm in diameter) of abnormal parenchymal composition with calcifications occupying the right lobe, was seen on thyroid ultrasound. Cytology, after fine-needle aspiration, showed an anaplastic thyroid carcinoma (ATC). The cervical and chest computed tomography scan revealed a low-density lesion with calcifications that shifts and presses the trachea and multiple lung nodular lesions bilaterally. Since the case was inoperable and the airway was severely obstructed, a DUMON stent was placed. Biopsy of specimens from the trachea lesion revealed a tumor with significant atypical cells and focal squamoid features. The patient's WBC increased to 72,470/μL. Additionally, interleukin-6 (IL-6) was markedly elevated (20.2 pg/mL). The patient passed away due to respiratory arrest 55 days after her initial admission. DISCUSSION Excessive leukocytosis in a patient, having excluded infectious disease and myelodysplastic syndrome, could represent a manifestation of a paraneoplastic syndrome due to various cytokines secretion from the tumor. In our case, ATC synthesized and secreted IL-6, which seems to be the cause of severe leukocytosis.
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Affiliation(s)
- Antonis Polymeris
- Department of Endocrinology, Metabolism and Diabetes Mellitus/Sismanogleio-Amalia Fleming Hospital, Athens, Greece
| | - Christina Kogia
- Department of Endocrinology, Metabolism and Diabetes Mellitus/Sismanogleio-Amalia Fleming Hospital, Athens, Greece
- *Antonis Polymeris, Department of Endocrinology, Metabolism and Diabetes Mellitus, Sismanogleio-Amalia Fleming Hospital, 25th Martiou, 14, GR–15127 Melissia, Athens (Greece),
| | - Dimitrios Ioannidis
- Department of Endocrinology, Metabolism and Diabetes Mellitus/Sismanogleio-Amalia Fleming Hospital, Athens, Greece
| | - Dimitrios Lilis
- Department of Endocrinology, Metabolism and Diabetes Mellitus/Sismanogleio-Amalia Fleming Hospital, Athens, Greece
| | - Maria Drakou
- Department of Endocrinology, Metabolism and Diabetes Mellitus/Sismanogleio-Amalia Fleming Hospital, Athens, Greece
| | - Nicoletta Maounis
- Department of Cytology/Sismanogleio-Amalia Fleming Hospital, Athens, Greece
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Pantou MP, Gourzi P, Gkouziouta A, Armenis I, Kaklamanis L, Zygouri C, Constantoulakis P, Adamopoulos S, Degiannis D. A case report of recessive restrictive cardiomyopathy caused by a novel mutation in cardiac troponin I (TNNI3). BMC Med Genet 2019; 20:61. [PMID: 30953456 PMCID: PMC6451262 DOI: 10.1186/s12881-019-0793-z] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 03/27/2019] [Indexed: 12/02/2022]
Abstract
Background Restrictive cardiomyopathy is a rare cardiac disease, for which several genes including TNNT2, MYPN, FLNC and TNNI3 have been associated with its familial form. Case presentation Here we describe a female proband with a severely manifested restrictive phenotype leading to heart transplantation at the age of 41, who was found homozygous for the novel TNNI3 mutation: NM_000363.4:c.586G > C, p.(Asp196His). Her parents were third-degree cousins originating from a small village and although they were found heterozygous for the same variant they displayed no symptoms of the disease. Her older sister who was also found heterozygous was asymptomatic. Her twin sister and her brother who were homozygous for the same variant displayed a restrictive and a hypertrophic phenotype, respectively. Their children are all carriers of the mutation and remain asymptomatic until the age of 21. Conclusion These observations point to a recessive mode of inheritance reported for the first time for this combination of gene/disease.
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Affiliation(s)
- Malena P Pantou
- Molecular Immunopathology and Histocompatibility Unit, Division of Genetics, Onassis Cardiac Surgery Center, Syggrou Av, 356, 176 74, Athens, Greece
| | - Polyxeni Gourzi
- Molecular Immunopathology and Histocompatibility Unit, Division of Genetics, Onassis Cardiac Surgery Center, Syggrou Av, 356, 176 74, Athens, Greece.
| | - Aggeliki Gkouziouta
- Heart Failure, MCS and Transplant Unit, Onassis Cardiac Surgery Center, Athens, Greece
| | - Iakovos Armenis
- Heart Failure, MCS and Transplant Unit, Onassis Cardiac Surgery Center, Athens, Greece
| | - Loukas Kaklamanis
- Department of Pathology, Onassis Cardiac Surgery Center, Athens, Greece
| | - Christianna Zygouri
- Department of Molecular Genetics, BioAnalytica-Genotypes S.A, Athens, Greece
| | | | - Stamatis Adamopoulos
- Heart Failure, MCS and Transplant Unit, Onassis Cardiac Surgery Center, Athens, Greece
| | - Dimitrios Degiannis
- Molecular Immunopathology and Histocompatibility Unit, Division of Genetics, Onassis Cardiac Surgery Center, Syggrou Av, 356, 176 74, Athens, Greece
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Bonou M, Kapelios CJ, Marinakos A, Adamopoulos S, Diamantopoulos P, Foukas PG, Kaklamanis L, Korkolopoulou P, Barbetseas J, Viniou NA. Diagnosis and treatment complications of primary cardiac lymphoma in an immunocompetent 28-year old man: a case report. BMC Cancer 2019; 19:191. [PMID: 30823905 PMCID: PMC6397455 DOI: 10.1186/s12885-019-5405-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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: 09/13/2018] [Accepted: 02/25/2019] [Indexed: 01/22/2023] Open
Abstract
Background Primary cardiac lymphomas (PCL) represent extremely rare cardiac tumors which are accompanied by poor prognosis, unless they are timely diagnosed and treated. Case presentation Herein we present a 28-year-old, immunocompetent man who presented to our hospital due to progressively worsening symptoms and signs of superior vena cava syndrome. Multi-modality imaging demonstrated a large intracardiac tumor, which was proven, by biopsy, to be a PCL. The patient received targeted chemotherapy which led to total remission of his disease, with no relapse over a 15-month follow-up period. Conclusions Although PCLs are rare, they should always be kept in mind in the differential diagnosis of cardiac tumors. Timely diagnosis of PCLs and appropriate chemotherapy, alone or in combination with radiotherapy, seems to provide the best results.
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Affiliation(s)
- Maria Bonou
- Cardiology Department, Laiko General Hospital, 17 Agiou Thoma Street, 11 527, Athens, Greece.
| | - Chris J Kapelios
- Cardiology Department, Laiko General Hospital, 17 Agiou Thoma Street, 11 527, Athens, Greece
| | - Athanasios Marinakos
- Cardiology Department, Laiko General Hospital, 17 Agiou Thoma Street, 11 527, Athens, Greece
| | - Stamatis Adamopoulos
- Heart Failure and Transplant Unit, Onassis Cardiac Surgery Centre, Athens, Greece
| | - Panagiotis Diamantopoulos
- Hematology Unit, 1st Department of Internal Medicine, National and Kapodistrian University of Athens School of Medicine, Laiko General Hospital, Athens, Greece
| | - Periklis G Foukas
- 2nd Department of Pathology, National and Kapodistrian University of Athens School of Medicine, Attikon University Hospital, Athens, Greece
| | - Loukas Kaklamanis
- Department of Pathology, Onassis Cardiac Surgery Centre, Athens, Greece
| | - Penelope Korkolopoulou
- 1st Department of Pathology, National and Kapodistrian University of Athens School of Medicine, Athens, Greece
| | - John Barbetseas
- Cardiology Department, Laiko General Hospital, 17 Agiou Thoma Street, 11 527, Athens, Greece
| | - Nora-Athina Viniou
- Hematology Unit, 1st Department of Internal Medicine, National and Kapodistrian University of Athens School of Medicine, Laiko General Hospital, Athens, Greece
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Mavrogenis G, Ntourakis D, Tsevgas I, Kaklamanis L, Zachariadis D. Pocket endoscopic submucosal dissection with countertraction and partial full-thickness excision as salvage therapy for advanced colonic adenoma with severe fibrosis. VideoGIE 2018; 3:211-212. [PMID: 30128392 PMCID: PMC6098674 DOI: 10.1016/j.vgie.2018.01.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Georgios Mavrogenis
- Mediterraneo Hospital, Athens, Greece.,School of Medicine, European University of Cyprus, Nikosia, Cyprus.,Mediterraneo Hospital, Athens, Greece.,Mediterraneo Hospital, Athens, Greece
| | - Dimitrios Ntourakis
- School of Medicine, European University of Cyprus, Nikosia, Cyprus.,Mediterraneo Hospital, Athens, Greece.,Mediterraneo Hospital, Athens, Greece
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Patsea E, Kaklamanis L, Batistatou A. The first report of a 5-year period cancer registry in Greece (2009-2013): a pathology-based cancer registry. Virchows Arch 2018; 472:677-682. [PMID: 29302754 DOI: 10.1007/s00428-017-2287-8] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 11/25/2017] [Accepted: 12/19/2017] [Indexed: 11/25/2022]
Abstract
Cancer registries are essential in health care, since they allow more accurate planning of necessary health services and evaluation of programs for cancer prevention and control. The Hellenic Society of Pathology (HSP) having recognized the lack of such information in Greece has undertaken the task of a 5-year pathology-based cancer registry in Greece (2009-2013). In this study, > 95% of all pathology laboratories in the national health system hospitals and 100% of pathology laboratories in private hospitals, as well as > 80% of private pathology laboratories have contributed their data. The most common cancer types overall were as follows: breast cancer (18.26%), colorectal cancer (15.49%), prostate cancer (13.49%), and lung cancer (10.24% of all registered cancers). In men, the most common neoplasms were as follows: prostate cancer, colorectal cancer, lung cancer, and gastric cancer. In women, the most common neoplasms were as follows: breast cancer, colorectal cancer, thyroid cancer, and lung cancer. The data on cancer burden in Greece, presented herein, fill the void of cancer information in Greece that affects health care not only nationally but Europe-wise.
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Affiliation(s)
- Eleni Patsea
- Department of Pathology, IASO Hospital of Athens, Marousi, Greece
| | - Loukas Kaklamanis
- Department of Pathology, ONASSIS Cardiac Surgery Center, Athens, Greece
| | - Anna Batistatou
- Department of Pathology, University Hospital of Ioannina, Ioannina, Greece.
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Mastoraki S, Strati A, Tzanikou E, Politaki E, Koutsodontis G, Kaklamanis L, Malamos N, Psyrri A, Georgoulias V, Lianidou E. Abstract 1730: ESR1 methylation in circulating tumor cells, ctDNA and primary tumors of breast cancer patients. Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-1730] [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: 11/16/2022]
Abstract
Abstract
Background: Estrogen receptor (ER) is an important prognostic biomarker in breast cancer. Epigenetic silencing of ESR1 could be of important clinical significance especially for its potential impact on endocrine treatment efficacy. Liquid biopsy provides real-time monitoring of tumor evolution and response to therapy through analysis of CTCs and ctDNA. Our group has evaluated for the first time epigenetic silencing of tumor and metastasis suppressor genes in CTCs and corresponding ctDNA. In this study, we evaluated for the first time ESR1 methylation in CTCs, paired ctDNA and primary tumors of breast cancer patients.
Methods: We developed and validated a highly sensitive and specific real-time MSP assay for ESR1 methylation. We further applied the developed assay in sodium bisulfite (SB) treated DNA samples from: a) FFPEs from 40 patients with operable breast cancer, 25 patients with metastasis, 30 mammoplasties and 15 fibroadenomas, b) EpCAM+ immunomagnetically isolated CTCs fractions, from 74 early breast cancer patients, 48 patients with metastasis and 30 healthy donors, c) CellSearch® cartridges from 36 early breast cancer patients, 22 patients with metastasis, d) ctDNA isolated from plasma of matched samples and 54 healthy donors as a control group.
Results: By using this highly specific and sensitive assay (sensitivity 0.1%) we detected methylation of ESR1 in: a) FFPEs: 16/40(40%) early breast cancer patients, 9/25(36%) patients with verified metastasis, 7/30(23.3%) mammoplasties and 5/15(33.3%) fibroadenomas. A statistically significant negative correlation was observed between ESR1 methylation status and ER protein expression (56/65 samples, 86%, p<0.001). b) In EpCAM+ CTCs fraction samples: ESR1 was found methylated in 16/74(21.6%) operable breast cancer patients, 10/48(20.8%) patients with metastasis, but only in 1/30(3.3%) healthy donors. c) CTC+ CellSearch® cartridges: 3/13(23.1%) in early breast cancer and 2/7(28.6%) in patients with metastasis. d) In ctDNA: ESR1 methylation was observed in 3/36(8.3%) early breast cancer patients, 3/22(13.6%) patients with metastasis and 2/54(3.7%) samples in the control group. ESR1 methylation status was highly correlated when paired DNA from CellSearch® cartridges and corresponding ctDNA samples were compared; 36/36 (100%, p<0.001) in early breast cancer and 21/22 (95.5%, p<0.001) in metastasis.
Conclusions: ER expression and ESR1 methylation were found 100% inversely correlated in primary tissues. The EpCAM+ CTC fraction of patients with breast cancer was found methylated for ESR1. Interestingly, ESR1 methylation was detected exclusively in CTC+ samples as analyzed from CellSearch® cartridges but in none of CTC- samples. In paired plasma samples, ESR1 methylation showed a high concordance (p<0.001) with ESR1 methylation in CTCs. Additional studies are needed to further evaluate the clinical significance of our findings.
Citation Format: Sophia Mastoraki, Areti Strati, Eleni Tzanikou, Eleni Politaki, George Koutsodontis, Loukas Kaklamanis, Nikolaos Malamos, Amanda Psyrri, Vassilis Georgoulias, Evi Lianidou. ESR1 methylation in circulating tumor cells, ctDNA and primary tumors of breast cancer patients [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 1730. doi:10.1158/1538-7445.AM2017-1730
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Souli MP, Klonos P, Fragopoulou AF, Mavragani IV, Pateras IS, Kostomitsopoulos N, Margaritis LH, Zoumpoulis P, Kaklamanis L, Kletsas D, Gorgoulis VG, Kyritsis A, Pissis P, Georgakilas AG. Applying Broadband Dielectric Spectroscopy (BDS) for the Biophysical Characterization of Mammalian Tissues under a Variety of Cellular Stresses. Int J Mol Sci 2017; 18:ijms18040838. [PMID: 28420124 PMCID: PMC5412422 DOI: 10.3390/ijms18040838] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 04/10/2017] [Accepted: 04/12/2017] [Indexed: 11/16/2022] Open
Abstract
The dielectric properties of biological tissues can contribute non-invasively to a better characterization and understanding of the structural properties and physiology of living organisms. The question we asked, is whether these induced changes are effected by an endogenous or exogenous cellular stress, and can they be detected non-invasively in the form of a dielectric response, e.g., an AC conductivity switch in the broadband frequency spectrum. This study constitutes the first methodological approach for the detection of environmental stress-induced damage in mammalian tissues by the means of broadband dielectric spectroscopy (BDS) at the frequencies of 1-10⁶ Hz. Firstly, we used non-ionizing (NIR) and ionizing radiation (IR) as a typical environmental stress. Specifically, rats were exposed to either digital enhanced cordless telecommunication (DECT) radio frequency electromagnetic radiation or to γ-radiation, respectively. The other type of stress, characterized usually by high genomic instability, was the pathophysiological state of human cancer (lung and prostate). Analyzing the results of isothermal dielectric measurements provided information on the tissues' water fraction. In most cases, our methodology proved sufficient in detecting structural changes, especially in the case of IR and malignancy. Useful specific dielectric response patterns are detected and correlated with each type of stress. Our results point towards the development of a dielectric-based methodology for better understanding and, in a relatively invasive way, the biological and structural changes effected by radiation and developing lung or prostate cancer often associated with genomic instability.
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Affiliation(s)
- Maria P Souli
- Physics Department, School of Applied Mathematical and Physical Sciences, National Technical University of Athens, Zografou Campus, 15780 Athens, Greece.
| | - Panagiotis Klonos
- Physics Department, School of Applied Mathematical and Physical Sciences, National Technical University of Athens, Zografou Campus, 15780 Athens, Greece.
| | - Adamantia F Fragopoulou
- Department of Cell Biology and Biophysics, Faculty of Biology, University of Athens, 15701 Athens, Greece.
| | - Ifigeneia V Mavragani
- Physics Department, School of Applied Mathematical and Physical Sciences, National Technical University of Athens, Zografou Campus, 15780 Athens, Greece.
| | - Ioannis S Pateras
- Molecular Carcinogenesis Group, Department of Histology and Embryology, School of Medicine, University of Athens, 11527 Athens, Greece.
| | - Nikolaos Kostomitsopoulos
- Laboratory Animal Facilities, Center of Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation, Academy of Athens, 4 Soranou Efesiou Street, 11527 Athens, Greece.
| | - Lukas H Margaritis
- Department of Cell Biology and Biophysics, Faculty of Biology, University of Athens, 15701 Athens, Greece.
| | - Pavlos Zoumpoulis
- Diagnostic Echotomography Medical S.A., 317C Kifissias Avenue, 145 61 Kifissia, Greece.
| | - Loukas Kaklamanis
- Department of Pathology, Onassis Cardiac Surgery Center, 356 Sygrou Avenue, 17674 Kallithea, Greece.
| | - Dimitris Kletsas
- Laboratory of Cell Proliferation and Ageing, Institute of Biosciences and Applications, National Centre for Scientific Research "Demokritos", 60037 Athens, Greece.
| | - Vassilis G Gorgoulis
- Molecular Carcinogenesis Group, Department of Histology and Embryology, School of Medicine, University of Athens, 11527 Athens, Greece.
| | - Apostolos Kyritsis
- Physics Department, School of Applied Mathematical and Physical Sciences, National Technical University of Athens, Zografou Campus, 15780 Athens, Greece.
| | - Polycarpos Pissis
- Physics Department, School of Applied Mathematical and Physical Sciences, National Technical University of Athens, Zografou Campus, 15780 Athens, Greece.
| | - Alexandros G Georgakilas
- Physics Department, School of Applied Mathematical and Physical Sciences, National Technical University of Athens, Zografou Campus, 15780 Athens, Greece.
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Psychogios K, Evmorfiadis I, Dragomanovits S, Stavridis A, Takis K, Kaklamanis L, Stathis P. ANCA-Negative Churg-Strauss Syndrome Presenting as Acute Multiple Cerebral Infarcts: A Case Report. J Stroke Cerebrovasc Dis 2017; 26:e47-e49. [PMID: 28065613 DOI: 10.1016/j.jstrokecerebrovasdis.2016.12.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2016] [Revised: 11/28/2016] [Accepted: 12/11/2016] [Indexed: 12/19/2022] Open
Abstract
Eosinophilic granulomatosis with polyangiitis (EGPA, previously named Churg-Strauss syndrome) is a form of necrotizing vasculitis occurring in patients with asthma and eosinophilia. Ischemic stroke is a relatively rare complication of the disease. We report a case of a 63-year-old woman with multiple embolic infarcts, hypereosinophilia (for >7 years), and skin rash. Elevated cardiac enzymes and cardiac magnetic resonance imaging were consistent with endomyocarditis. The simultaneous presence of history of asthma, sinusitis, hypereosinophilia, and vasculitis led to the diagnosis of EGPA. This case contributes to the recent debate of the 2 possible presentations of the disease according to the ANCA (antineutrophil cytoplasmic antibodies) status. We furthermore underscore the need for careful differential diagnosis of the "ANCA negative" cases with persistent hypereosinophilia from the idiopathic hypereosinophilic syndrome.
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Affiliation(s)
| | - Ilias Evmorfiadis
- Department of Thrombosis and Hemostasis, Mediterraneo Hospital, Athens, Greece
| | | | | | | | - Loukas Kaklamanis
- Department of Pathology, Onassis Cardiac Surgery Center, Athens, Greece
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Andreadou I, Mitakou S, Paraschos S, Efentakis P, Magiatis P, Kaklamanis L, Halabalaki M, Skaltsounis L, Iliodromitis EK. "Pistacia lentiscus L." reduces the infarct size in normal fed anesthetized rabbits and possess antiatheromatic and hypolipidemic activity in cholesterol fed rabbits. Phytomedicine 2016; 23:1220-1226. [PMID: 27316396 DOI: 10.1016/j.phymed.2016.06.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 05/23/2016] [Accepted: 06/03/2016] [Indexed: 06/06/2023]
Abstract
HYPOTHESIS/PURPOSE The aim of the present study was to evaluate in vivo the potential anti-ischemic and antiatheromatic activity of Chios Mastic gum, the resin of the trunk and branches of "Pistacia lentiscus var. chia", used since antiquity in traditional Greek medicine. The main compounds of mastic are triterpenes, possessing phytosterol-like structures. This led to the hypothesis that mastic and particularly its neutral fraction, enriched in phytosterol-like compounds, possess antiatheromatic activities. METHODS Total Mastic Extract without Polymer (TMEWP) and the neutral mastic fraction (NMF) were administered orally for 6 weeks to normal fed and to cholesterol fed rabbits in the form of sunflower oil solution. All the animals were randomly divided into 6 groups, anesthetized and subjected to 30min ischemia of the heart, followed by 3h reperfusion: At the end of the experiment the area at risk and the infarct zone were determined with the aid of fluorescent particles and triphenyl tetrazolium chloride staining, and small segments of the ascending and descending aorta and the heart were taken for histologic examination. Blood samples were collected at different time points of ischemia and reperfusion, for malondialdehyde (MDA) evaluation as an index of lipid peroxidation, for total and LDL cholesterol determination and for evaluation of oxidized LDL. RESULTS In the normal fed animals the NMF and the TMEWP reduced significantly the infarct size, while in the hypercholesterolemic rabbits both treatments were ineffective. Atherosclerosis was detected in all the animals fed cholesterol enriched diet in the form of subintimal accumulation of lipids and foamy macrophages. There was no detection of atherosclerosis in Groups treated with TMEWP and NMF, which both reduced the total cholesterol levels by 47 and 88% respectively, whilst had not effect on LDL oxidation. TMEWP and NMF reduced the MDA concentration in normal fed rabbits, but had no effect on MDA levels in cholesterol fed animals. TMEWP and NMPF reduce the infarct size in normal animals and possess significant antiatheromatic and hypolipidemic activities in rabbits fed cholesterol enriched diet.
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Affiliation(s)
- Ioanna Andreadou
- Department of Pharmaceutical Chemistry, School of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15771, Athens, Greece.
| | - Sofia Mitakou
- Department of Pharmacognocy, School of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15771, Athens, Greece
| | - Sotirios Paraschos
- Department of Pharmacognocy, School of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15771, Athens, Greece
| | - Panagiotis Efentakis
- Department of Pharmaceutical Chemistry, School of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15771, Athens, Greece
| | - Prokopios Magiatis
- Department of Pharmacognocy, School of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15771, Athens, Greece
| | | | - Maria Halabalaki
- Department of Pharmacognocy, School of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15771, Athens, Greece
| | - Leandros Skaltsounis
- Department of Pharmacognocy, School of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15771, Athens, Greece
| | - Efstathios K Iliodromitis
- Second University Department of Cardiology, Medical School, Attikon General Hospital, National and Kapodistrian University of Athens, Rimini 1, 124 62 Athens, Greece
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Kapelouzou A, Tsourelis L, Kaklamanis L, Degiannis D, Kogerakis N, Cokkinos DV. Serum and tissue biomarkers in aortic stenosis. Glob Cardiol Sci Pract 2015; 2015:49. [PMID: 26779524 PMCID: PMC4710866 DOI: 10.5339/gcsp.2015.49] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [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: 06/14/2015] [Accepted: 08/27/2015] [Indexed: 12/31/2022] Open
Abstract
Background: Calcific aortic valve stenosis (CAVS) is seen in a large proportion of individuals over 60 years. It is an active process, influenced by lipid accumulation, mechanical stress, inflammation, and abnormal extracellular matrix turnover. Various biomarkers (BMs) are studied, as regards mechanisms, diagnosis and prognosis. Methods: In the calcified valves calcium deposition, elastin fragmentation and disorganization of cellular matrix were assessed, together with expression of OPN, OPG, osteocalcin (OCN) and RL2. We prospectively studied the following serum BMs in 60 patients with CAVS and compared them to 20 healthy controls, free from any cardiac disease: Matrix metalloproteinases (MMP) 2 and 9 and tissue inhibitor of metalloproteinase 1 (TIMP1), which regulate collagen turnover, inflammatory factors, i.e. tumor necrosis factor a (TNFa), interleukin 2 (IL2), transforming growth factor β1 (TGF-β1) which regulates fibrosis, fetuin-A (fet-A), osteopontin (OPN), osteoprotegerin (OPG), sclerostin (SOST), and relaxin-2 (RL2) which positively or negatively regulate calcification. Monocyte chemoattractant protein 1 (MCP-1) which regulates migration and infiltration of monocytes/macrophages was also studied as well as malondialdehyde (MDA) an oxidative marker. Results: Extent of tissue valve calcification (Alizarin Red stain) was negatively correlated with tissue elastin, and RL2, and positively correlated with tissue OCN and serum TIMP1 and MCP-1 and negatively with MMP9. Tissue OCN was positively correlated with OPN and negatively with the elastin. Tissue OPN was negatively correlated with elastin and OPG. Tissue OPN OPG and RL2 were not correlated with serum levels In the serum we found in patients statistically lower TIMP1, fet-A and RL2 levels, while all other BMs were higher compared to the healthy group. Positive correlations between SOST and IL2, OPG and MDA but negative with TNFa and OPN were found; also MMP9 was negatively correlated with TNFa and MCP-1 was negatively correlated with TIMP1. Conclusion: We found that many BMs expressing calcification, collagen breakdown, or formation, and inflammation are increased in the valve tissue and in the serum of patients with CAVS as compared with healthy group. Our findings may give new insights towards diagnosis but also therapy. Thus antisclerostin, and antiflammatory agents could be tried for preventing aortic calcification progression.
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Affiliation(s)
- Alkistis Kapelouzou
- Center of Clinical, Experimental Surgery, & Translation Research. Biomedical Research Foundation Academy of Athens (BRFAA), Soranou Efesiou 4 11527Athens, Greece
| | - Loukas Tsourelis
- Department of Pathology, Onassis Cardiac Surgery Center, Avenue Sygrou 356 17674Athens, Greece
| | - Loukas Kaklamanis
- Department of Pathology, Onassis Cardiac Surgery Center, Avenue Sygrou 356 17674Athens, Greece
| | - Dimitrios Degiannis
- Laboratory of Molecular Immunopathology and Istocompatibility Onassis Cardiac Surgery Center, Avenue Sygrou 356 17674Athens, Greece
| | - Nektarios Kogerakis
- Department of Pathology, Onassis Cardiac Surgery Center, Avenue Sygrou 356 17674Athens, Greece
| | - Dennis V Cokkinos
- Center of Clinical, Experimental Surgery, & Translation Research. Biomedical Research Foundation Academy of Athens (BRFAA), Soranou Efesiou 4 11527Athens, Greece
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Pitsinis V, Provenzano E, Kaklamanis L, Wishart GC, Benson JR. Indocyanine green fluorescence mapping for sentinel lymph node biopsy in early breast cancer. Surg Oncol 2015; 24:375-9. [PMID: 26555151 DOI: 10.1016/j.suronc.2015.10.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [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: 09/07/2015] [Revised: 10/06/2015] [Accepted: 10/16/2015] [Indexed: 02/05/2023]
Abstract
INTRODUCTION A recent feasibility study (ICG-10) has confirmed high sensitivity of ICG fluorescence mapping for sentinel SLN detection in early breast cancer with 95% of nodes both blue and fluorescent. This follow-on study has specifically evaluated a combination of ICG and blue dye for SLN localization. METHODS Fifty consecutive patients (49 female; 1 male) with unilateral clinically node negative invasive (37) and non-invasive (13) breast cancer underwent SLN biopsy with blue dye and ICG. Median patient age was 48 years and median invasive tumour size 19 mm for primary surgical patients. All patients had a normal pre-operative axillary ultrasound. Nodal and procedural detection rates were calculated for ICG alone and in combination with blue dye. RESULTS A total of 87 nodes were retrieved with an average nodal count of 1.8 per patient (range 1-4). Eighty four nodes were blue and fluorescent and 3 fluorescent only. Nodal detection rates for ICG alone and combined with blue dye were 100% (87/87) and 96% (84/87) respectively. Metastases were present in 18 nodes (all blue and fluorescent) with 10 patients node positive overall (20%). The procedural detection rate for blue dye and ICG was 96% (48/50) and 2 patients had fluorescent only nodes which were deemed sentinel (4%). CONCLUSION Fluorescent imaging with ICG is a sensitive, valuable and safe method for SLN biopsy. A combination of blue dye and ICG is useful dual approach when radioisotope is unavailable. ICG has the potential to be a sole tracer agent with improved patient convenience and costs.
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Affiliation(s)
- Vassilis Pitsinis
- Cambridge Breast Clinic, Mediterraneo Hospital, Athens, 16675, Greece
| | - Elena Provenzano
- Cambridge Breast Unit, Addenbrookes Hospital, Cambridge, CB2 0QQ, United Kingdom
| | - Loukas Kaklamanis
- Cambridge Breast Clinic, Mediterraneo Hospital, Athens, 16675, Greece
| | - Gordon C Wishart
- Cambridge Breast Clinic, Mediterraneo Hospital, Athens, 16675, Greece; Faculty of Medical Science, Anglia Ruskin University, East Road, Cambridge, CB1 1PT, United Kingdom
| | - John R Benson
- Cambridge Breast Unit, Addenbrookes Hospital, Cambridge, CB2 0QQ, United Kingdom; Faculty of Medical Science, Anglia Ruskin University, East Road, Cambridge, CB1 1PT, United Kingdom.
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Mitropoulos FA, Kanakis MA, Chatzis AC, Kaklamanis L, Lioulias AG. Pneumonectomy and contralateral metastasectomy through a single thoracotomy in a 9-year-old girl with a giant tumor. Ann Thorac Surg 2015; 99:319-21. [PMID: 25555955 DOI: 10.1016/j.athoracsur.2014.02.088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2013] [Revised: 02/13/2014] [Accepted: 02/20/2014] [Indexed: 11/29/2022]
Abstract
A 9-year-old girl with a giant tumor of the right lung and an isolated metastasis of the left lower lobe underwent combined pneumonectomy and metastasectomy through means of a right thoracotomy. Her postoperative course was uneventful. The operative approach of a tumor of this scale and the concurrent contralateral metastasectomy are described and discussed.
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Affiliation(s)
- Fotios A Mitropoulos
- Department of Pediatric and Congenital Heart Surgery, Onassis Cardiac Surgery Center, Athens, Greece
| | - Meletios A Kanakis
- Department of Pediatric and Congenital Heart Surgery, Onassis Cardiac Surgery Center, Athens, Greece; Department of Thoracic Surgery, Sismanoglio General Hospital of Athens, Athens, Greece.
| | - Andrew C Chatzis
- Department of Pediatric and Congenital Heart Surgery, Onassis Cardiac Surgery Center, Athens, Greece
| | - Loukas Kaklamanis
- Department of Pathology, Onassis Cardiac Surgery Center, Athens, Greece
| | - Achilleas G Lioulias
- Department of Thoracic Surgery, Sismanoglio General Hospital of Athens, Athens, Greece
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Stathaki M, Armakolas A, Dimakakos A, Kaklamanis L, Vlachos I, Konstantoulakis MM, Zografos G, Koutsilieris M. Kisspeptin effect on endothelial monocyte activating polypeptide II (EMAP-II)-associated lymphocyte cell death and metastases in colorectal cancer patients. Mol Med 2014; 20:80-92. [PMID: 24395571 DOI: 10.2119/molmed.2013.00151] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 12/23/2013] [Indexed: 12/28/2022] Open
Abstract
Kisspeptin is an antimetastatic agent in some cancers that has also been associated with lymphoid cell apoptosis, a phenomenon favoring metastases. Our aim was to determine the association of kisspeptin with lymphocyte apoptosis and the presence of metastases in colorectal cancer patients. Blood was drawn from 69 colon cancer patients and 20 healthy volunteers. Tissue specimens from healthy and pathological tissue were immunohistochemically analyzed for kisspeptin and endothelial monocyte activating polypeptide II (EMAP-II) expression. Blood EMAP-II and soluble Fas ligand (sFasL) levels were examined by an enzyme-linked immunosorbent assay method. The kisspeptin and EMAP-II expression and secretion levels in the DLD-1 and HT-29 colon cancer cell lines were examined by quantitative real-time polymerase chain reaction, Western analysis and enzyme-linked immunosorbent assay, whereas lymphocyte viability was assessed by flow cytometry. The effect of kisspeptin on the viability of colon cancer cells was examined by MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide]. Exogenous, synthetic and naturally produced, kisspeptin induces through the G-protein-coupled receptor 54 (GPR54; also known as the kisspeptin receptor) the EMAP-II expression and secretion in colon cancer cell lines, inducing in vitro lymphocyte apoptosis, as verified by the use of an anti-EMAP-II antibody. These results were reversed with the use of kisspeptin inhibitors and by kisspeptin-silencing experiments. Tumor kisspeptin expression was associated with the tumor EMAP-II expression (p < 0.001). Elevated kisspeptin and EMAP-II expression in colon cancer tissues was associated with lack of metastases (p < 0.001) in colon cancer patients. These data indicate the antimetastatic effect of tumor-elevated kisspeptin in colon cancer patients that may be mediated by the effect of kisspeptin on EMAP-II expression in colon cancer tumors in patients with normal serum EMAP-II levels. These findings provide new insight into the role of kisspeptin in the context of metastases in colon cancer patients.
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Affiliation(s)
- Martha Stathaki
- First Propadeutic Surgical Clinic, Athens Medical School, National and Kapodestrian University of Athens, Athens, Greece Physiology Laboratory, Athens Medical School, National and Kapodestrian University of Athens, Athens, Greece
| | - Athanasios Armakolas
- Physiology Laboratory, Athens Medical School, National and Kapodestrian University of Athens, Athens, Greece
| | - Andreas Dimakakos
- Physiology Laboratory, Athens Medical School, National and Kapodestrian University of Athens, Athens, Greece
| | | | - Ioannis Vlachos
- Physiology Laboratory, Athens Medical School, National and Kapodestrian University of Athens, Athens, Greece
| | - Manoussos M Konstantoulakis
- First Propadeutic Surgical Clinic, Athens Medical School, National and Kapodestrian University of Athens, Athens, Greece
| | - George Zografos
- First Propadeutic Surgical Clinic, Athens Medical School, National and Kapodestrian University of Athens, Athens, Greece
| | - Michael Koutsilieris
- Physiology Laboratory, Athens Medical School, National and Kapodestrian University of Athens, Athens, Greece
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Kourkoveli P, Tsiapras D, Grisbolaki E, Karapanagiotou O, Kampanarou S, Kyrzopoulos S, Kaklamanis L, Khoury M, Voudris V. Growth rate of an apical left ventricular myxoma using serial two dimensional echocardiographic and computed tomography observations over twelve months: a case report. J Med Case Rep 2014; 8:60. [PMID: 24548464 PMCID: PMC3943379 DOI: 10.1186/1752-1947-8-60] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Accepted: 10/14/2013] [Indexed: 11/10/2022] Open
Abstract
INTRODUCTION Myxomas are the most common benign tumors of the heart. They vary widely in size, and little is known about their growth rate. The present case report is, we believe the first in bibliography that provides images of an apical left ventricular myxoma from transthoracic echocardiography and computed tomography scans taken a year apart. CASE PRESENTATION We present the rare case of a 65-year-old asymptomatic Caucasian man with an apical left ventricular myxoma that grew over a 12-month period. Our patient underwent successful surgical excision of the tumor and had an uneventful postsurgical recovery period. CONCLUSIONS Left ventricular myxomas are benign and curable tumors. They do not usually present with systemic symptomatology and most of them are diagnosed as sequelae of syncope caused by left ventricular outflow tract obstruction or systemic embolization. Because they are usually removed after diagnosis, the growth rate of myxomas is generally unknown. We present a rare case of the asymptomatic presentation of a left ventricular myxoma and its documented growth during a 12-month period.
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Affiliation(s)
- Panagiota Kourkoveli
- Department of Cardiology, Onassis Cardiac Surgery Center, 8 Iasiou Street, 11521 Athens, Greece.
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Tsourelis L, Kapelouzou A, Kaklamanis L, Kostakis A, Cokkinos D. 165: Various serum biomarkers express multiple processes leading to calcific aortic stenosis. Archives of Cardiovascular Diseases Supplements 2013. [DOI: 10.1016/s1878-6480(13)71095-4] [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: 11/26/2022]
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Vlahakos D, Arkadopoulos N, Kostopanagiotou G, Siasiakou S, Kaklamanis L, Degiannis D, Demonakou M, Smyrniotis V. Deferoxamine attenuates lipid peroxidation, blocks interleukin-6 production, ameliorates sepsis inflammatory response syndrome, and confers renoprotection after acute hepatic ischemia in pigs. Artif Organs 2011; 36:400-8. [PMID: 22187937 DOI: 10.1111/j.1525-1594.2011.01385.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
We have previously shown that deferoxamine (DFO) infusion protected myocardium against reperfusion injury in patients undergoing open heart surgery, and reduced brain edema, intracranial pressure, and lung injury in pigs with acute hepatic ischemia (AHI). The purpose of this research was to study if DFO could attenuate sepsis inflammatory response syndrome (SIRS) and confer renoprotection in the same model of AHI in anesthetized pigs. Fourteen animals were randomly allocated to two groups. In the Group DFO (n=7), 150mg/kg of DFO dissolved in normal saline was continuously infused in animals undergoing hepatic devascularization and portacaval anastomosis. The control group (Group C, n=7) underwent the same surgical procedure and received the same volume of normal saline infusion. Animals were euthanized after 24h. Hematological, biochemical parameters, malondialdehyde (MDA), and cytokines (interleukin [IL]-1β, IL-6, IL-8, IL-10, and tumor necrosis factor-α) were determined from sera obtained at baseline, at 12h, and after euthanasia. Hematoxylin-eosin and terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick end labeling were used to evaluate necrosis and apoptosis, respectively, in kidney sections obtained after euthanasia. A rapid and substantial elevation (more than 100-fold) of serum IL-6 levels was observed in Group C reaching peak at the end of the experiment, associated with increased production of oxygen free radicals and lipid peroxidation (MDA 3.2±0.1nmol/mL at baseline and 5.5±0.9nmol/mL at the end of the experiment, P<0.05) and various manifestations of SIRS and multiple organ dysfunction (MOD), including elevation of high-sensitivity C-reactive protein, severe hypotension, leukocytosis, thrombocytopenia, hypoproteinemia, and increased serum levels of lactate dehydrogenase (fourfold), alkaline phosphatase (fourfold), alanine aminotransferase (14-fold), and ammonia (sevenfold). In sharp contrast, IL-6 production and lipid peroxidation were completely blocked in DFO-treated animals offering remarkable resistance to the development of SIRS and MOD. Profound proteinuria, strips of extensive necrosis of tubular epithelial cells, and occasional apoptotic tubular epithelial cells were already present in Group C, but not in Group DFO animals at the time of euthanasia. DFO infusion attenuated lipid peroxidation, blocked IL-6 production, and substantially diminished SIRS and MOD, including tubulointerstitial damage in pigs after acute ischemic hepatic failure. This finding shows that iron, IL-6, and lipid peroxidation are important participants in the pathophysiology of renal injury in the course of generalized inflammation and provides novel pathways of therapeutic interventions for renal protection.
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Affiliation(s)
- Demetrios Vlahakos
- Department of Internal Medicine, Athens University Medical School, Attikon University Hospital, Haidari, Athens, Greece.
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Parisi K, Markou A, Tsaroucha E, Kaklamanis L, Lianidou ES. Abstract 5140: Development and evaluation of a liquid bead array assay for the expression of VEGF121, VEGF165 and VEGF189 splice variants in non-small cell lung cancer (NSCLC). Cancer Res 2011. [DOI: 10.1158/1538-7445.am2011-5140] [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: 11/16/2022]
Abstract
Abstract
Introduction. Vascular endothelial growth factor (VEGF) is an endothelial cell-specific mitogen and a key regulator of angiogenesis. The aim of our study was to develop and validate a novel liquid bead array assay for the expression of VEGF121, VEGF165 and VEGF189 splice variants, based on the Luminex technology and evaluate it in NSCLC.
Materials and methods. We developed a multiplexed PCR-coupled liquid bead array to detect the expression of VEGF splice variants VEGF121, VEGF165 and VEGF189. We included PBGD as a reference gene, in order to evaluate sample RNA quality. The developed assay is based on liquid bead array technology (Luminex® xMAP® and xTAG®). The assay is based on the following procedure: total RNA isolation from samples, cDNA synthesis, multiplex PCR, treatment with ExoSAP-IT® reagent, target specific primer extension (TSPE), biotinylation of PCR products, hybridization of the biotinylated products to xMAP microspheres, addition of detection reagent (Streptavidin- phycoerythrin) and measurement in the Luminex analyzer. Before processing to patients samples an extensive optimization of every step of the method was performed in terms of analytical sensitivity, specificity, repeatability and reproducibility. The clinical performance of the assay was evaluated in 20 pairs of fresh frozen cancerous and corresponding noncancerous adjacent tissue samples originating from patients with NSCLC. The results were compared with RT-qPCR using our previously developed methodology for VEGF splice variants, (Zygalaki et al, Clin Chem, 2007).
Results. When using the tumor cell line MCF-7 the developed method can detect down to 10 cells, is highly specific and is characterized by satisfactory repeatability and reproducibility for each VEGF splice variant. Comparison between the developed liquid bead array for VEGF splice variants and RT-qPCR has shown an accordance of 16/20 pairs (80%) for PBGD, 16/20 for VEGF121 (80%), 18/20 for VEGF165 (90%) and 17/20 for VEGF189 (85%).
Conclusions. The developed liquid bead array can be used to detect VEGF splice variants simultaneously in clinical samples with high specificity and sensitivity. The method can be extended to analyze additional gene targets, while the use of an internal control could further enable quantification.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 102nd Annual Meeting of the American Association for Cancer Research; 2011 Apr 2-6; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2011;71(8 Suppl):Abstract nr 5140. doi:10.1158/1538-7445.AM2011-5140
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Affiliation(s)
- Kleo Parisi
- 1Department of Chemistry, Univ. of Athens, Athens, Greece
| | - Athina Markou
- 1Department of Chemistry, Univ. of Athens, Athens, Greece
| | | | - Loukas Kaklamanis
- 3Department of Pathology, Onassis Cardiac Surgery Center, Athens, Greece
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Sourvinou IS, Markou A, Kaklamanis L, Tsaroucha EG, Lianidou ES. Abstract 3944: PTEN is not directly regulated by miRNA-21 in non-small cell lung cancer. Cancer Res 2011. [DOI: 10.1158/1538-7445.am2011-3944] [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: 11/16/2022]
Abstract
Abstract
Introduction: PTEN is a well known tumor suppressor gene that plays a crucial role in the regulation of many normal biological processes. Among the mechanisms taking part in its regulation has been demonstrated being miR-21 action, as it has been reported that PTEN consists one of miR-21 target genes. In this study, we speculated on the effect of miR-21 expression levels in non small cell lung cancer tissues towards: a) PTEN mRNA expression levels and b) PTEN protein levels.
Materials and Methods: Thirty pairs of NSCLC fresh-frozen tissues and their corresponding noncancerous tissues were analyzed for the expression of mature miR-21 as well as for the expression of PTEN transcript using RT-qPCR. PBGD was used as a reference gene and for the evaluation of RNA quality in our samples. In parallel, PTEN protein levels were evaluated by immunohistochemistry in the same samples. Deparaffinized sections cut from paraffin-embedded tissue samples were stained with a specific anti-PTEN antibody. Tumor types and stages were determined according to the WHO classification. All samples were analyzed histologically to access the amount of tumor component (at least 70% of tumor cells) and the quality of material.
Results: In 26/30 NSCLC tissues studied (86.7%), PTEN mRNA expression was decreased when compared to adjacent noncancerous tissues, while overexpression of PTEN transcript was perceived in only 4 samples (13.3%). Evaluation of PTEN protein level in these specimens revealed that in 28/30 samples (93.3%), PTEN protein was detected, while in only 2/30 samples (6.7%) PTEN protein loss was observed. The respective data for miR-21 expression levels indicated that PTEN mRNA as well as protein levels were independent of miR-21 expression status in non small cell lung cancer samples.
Conclusion: Our data indicate for the first time that in NSCLC miR-21 expression levels do not directly regulate PTEN protein levels. PTEN protein was detected by IHC in the vast majority of NSCLC tissues despite the fact that PTEN mRNA expression levels were lower in cancerous tissues than in the corresponding noncancerous tissues.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 102nd Annual Meeting of the American Association for Cancer Research; 2011 Apr 2-6; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2011;71(8 Suppl):Abstract nr 3944. doi:10.1158/1538-7445.AM2011-3944
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Affiliation(s)
| | - Athina Markou
- 1Laboratory of Analytical Chemistry, University of Athens, Athens, Greece
| | - Loukas Kaklamanis
- 2Department of Pathology, Onassis Cardiac Surgery Center, Athens, Greece
| | | | - Evi S. Lianidou
- 1Laboratory of Analytical Chemistry, University of Athens, Athens, Greece
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Papadaki C, Tsaroucha E, Kaklamanis L, Lagoudaki E, Trypaki M, Tryfonidis K, Mavroudis D, Stathopoulos E, Georgoulias V, Souglakos J. Correlation of BRCA1, TXR1 and TSP1 mRNA expression with treatment outcome to docetaxel-based first-line chemotherapy in patients with advanced/metastatic non-small-cell lung cancer. Br J Cancer 2010; 104:316-23. [PMID: 21157449 PMCID: PMC3031890 DOI: 10.1038/sj.bjc.6606027] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [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] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND We explored the predictive significance of BRCA1, TXR1 and TSP1 expression in non-small-cell lung cancer (NSCLC) patients treated with docetaxel in association with cisplatin or gemcitabine. METHODS To analyse BRCA1, TXR1 and TSP1 mRNA expression from microdissected primary tumours of 131 patients with stage IIIB (wet) and IV NSCLC, RT-qPCR was used. RESULTS The mRNA levels of TXR1/TSP1 were inversely correlated (Spearman's test: -0.37; P=0.001). Low TXR1 mRNA levels were associated with higher response rate (RR; P=0.018), longer median progression-free survival (PFS; P=0.029) and median overall survival (mOS P=0.003), whereas high TSP1 expression was correlated with higher RR (P=0.035), longer PFS (P<0.001) and mOS (P<0.001). Higher BRCA1 mRNA expression was associated with higher RR (P=0.028) and increased PFS (P=0.021), but not mOS (P=0.4). Multivariate analysis demonstrated that low TXR1/high TSP1 expression was an independent factor for increased PFS (HR 0.49; 95% CI 0.32-0.76; P<0.001) and mOS (HR 0.37; 95% CI 0.2-0.58; P<0.001), whereas high BRCA1 expression was correlated with increased PFS (HR 0.53; 95% CI 0.37-0.78; P=0.001). CONCLUSIONS These data indicate that TXR1/TSP1 and BRCA1 expression could be used for the prediction of taxanes' resistance in the treatment of NSCLC.
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Affiliation(s)
- C Papadaki
- Laboratory of Tumor Cell Biology, School of Medicine, University of Crete, Heraklion, Crete, Greece
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Sourvinou I, Markou A, Kaklamanis L, Tsaroucha E, Ozaki I, Matsuhashi S, Lianidou E. 633 MicroRNA-21 expression levels are accompanied by respective alterations in PDCD4 protein levels in non-small cell lung cancer. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)72340-5] [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: 11/30/2022] Open
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Barbatis C, Loukas L, Grigoriou M, Nikolaou I, Tsikou-Papafragou A, Marsan N, Gatter KC, Kaklamanis L. p53 Overexpression in laryngeal squamous cell carcinoma and dysplasia. Mol Pathol 2010; 48:M194-7. [PMID: 16696005 PMCID: PMC407961 DOI: 10.1136/mp.48.4.m194] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Aim-To investigate the expression of p53 protein in invasive squamous cell carcinoma (SCC) of the larynx and dysplasia in relation to histological grade and tobacco smoking.Method-Paraffin wax embedded tissue sections from 41 cases of invasive SCC of the larynx, 28 cases of dysplasia and 14 control laryngeal biopsy specimens were studied immunohistochemically using two anti-p53 monoclonal antibodies (DO7 and 1801). The Streptavidin/horseradish peroxidase method was used after microwave antigen retrieval and a semiquantitative method was applied to assess the extent of p53 expression.Results-Of the cases of invasive SCC of the larynx, 78% (32/41), regardless of histological grade, overexpressed p53 compared with only 30% (eight of 28) of cases of mild dysplasia. A gradual increase in p53 expression from mild to severe dysplasia (60%) was observed, and only three of 14 control biopsy specimens of laryngeal nodules showed occasional weakly positive basal cells.Conclusion-The gradual increase in p53 expression from mild to severe dysplasia to invasive SCC indicates that p53 overexpression is an early event in laryngeal carcinogenesis which may lead to invasive malignancy. p53 overexpression may be related to environmental factors as most of the patients smoked tobacco. Microwave postfixation may be essential for the reliable detection of p53.
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Affiliation(s)
- C Barbatis
- Department of Histopathology, Red Cross Hospital, Athens, Greece
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Mavrogeni S, Papavasiliou A, Spargias K, Constandoulakis P, Papadopoulos G, Karanasios E, Georgakopoulos D, Kolovou G, Demerouti E, Polymeros S, Kaklamanis L, Magoutas A, Papadopoulou E, Markussis V, Cokkinos DV. Myocardial inflammation in Duchenne Muscular Dystrophy as a precipitating factor for heart failure: a prospective study. BMC Neurol 2010; 10:33. [PMID: 20492678 PMCID: PMC2885327 DOI: 10.1186/1471-2377-10-33] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [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: 10/28/2009] [Accepted: 05/21/2010] [Indexed: 12/04/2022] Open
Abstract
Background In patients with Duchenne Muscular Dystrophy (DMD), the absent or diminished dystrophin leads to progressive skeletal muscle and heart failure. We evaluated the role of myocardial inflammation as a precipitating factor in the development of heart failure in DMD. Methods 20 DMD patients (aged 15-18 yrs) and 20 age-matched healthy volunteers were studied and followed-up for 2 years. Evaluation of myocarditis with cardiovascular magnetic resonance imaging (CMR) was performed using STIR T2-weighted (T2W), T1-weighted (T1W) before and after contrast media and late enhanced images (LGE). Left ventricular volumes and ejection fraction were also calculated. Myocardial biopsy was performed in patients with positive CMR and immunohistologic and polymerase chain reaction (PCR) analysis was employed. Results In DMD patients, left ventricular end-diastolic volume (LVEDV) was not different compared to controls. Left ventricular end-systolic volume (LVESV) was higher (45.1 ± 6.6 vs. 37.3 ± 3.8 ml, p < 0.001) and left ventricular ejection fraction (LVEF) was lower (53.9 ± 2.1 vs. 63 ± 2.4%, p < 0.001). T2 heart/skeletal muscle ratio and early T1 ratio values in DMD patients presented no difference compared to controls. LGE areas were identified in six DMD patients. In four of them with CMR evidence of myocarditis, myocardial biopsy was performed. Active myocarditis was identified in one and healing myocarditis in three using immunohistology. All six patients with CMR evidence of myocarditis had a rapid deterioration of left ventricular function during the next year. Conclusions DMD patients with myocardial inflammation documented by CMR had a rigorous progression to heart failure.
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Affiliation(s)
- Sophie Mavrogeni
- A Cardiology Department, Onassis Cardiac Surgery Center, Athens, Greece.
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Papadaki C, Tsaroucha E, Kaklamanis L, Mavroudis D, Lagoudaki E, Trypaki M, Tsakalaki E, Georgoulias V, Sougklakos I. Correlation of pharmacogenetic markers with docetaxel-based chemotherapy resistance in patients with advanced/metastatic non-small cell lung cancer. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.7615] [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: 11/20/2022] Open
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Iordanidou M, Tavridou A, Petridis I, Kyroglou S, Kaklamanis L, Christakidis D, Manolopoulos VG. Association of polymorphisms of the serotonergic system with smoking initiation in Caucasians. Drug Alcohol Depend 2010; 108:70-6. [PMID: 20060656 DOI: 10.1016/j.drugalcdep.2009.11.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2009] [Revised: 10/31/2009] [Accepted: 11/17/2009] [Indexed: 11/28/2022]
Abstract
BACKGROUND The serotonergic system may be implicated in susceptibility to nicotine dependence as nicotine increases 5-hydroxytryptamine (5-HT) release in brain and symptoms of nicotine withdrawal may be modulated by diminished serotonergic neurotransmission. We examined the association of polymorphisms of genes involved in release and receptor function of 5-HT with cigarette smoking initiation in subjects of Caucasian origin. METHODS 5-HTTLPR polymorphism of the 5-HT transporter gene and -759C/T (rs3813929) and -697G/C (rs518147) polymorphisms of the 5-HT(2C) receptor gene were analyzed in 172 smoking initiators and 254 non-initiators, using PCR-RFLP method. Smoking behavior was assessed with a questionnaire about tobacco use. RESULTS We found no differences in the frequency of the 5-HTTLPR genotypes between smoking initiators and non-initiators. However, the frequency of 5-HT(2C) -759T allele was significantly higher in non-initiators than smoking initiators (29.5% vs 16.3%, p=0.002) and the same was true for 5-HT(2C) -697C allele carriers (48.8% vs 34.9%, p=0.004). Sex-dependent analysis revealed that these increased frequencies of -759T and -697C allele carriers were present only in males. No association was observed between any quantitative measures of smoking and these three polymorphisms. CONCLUSIONS 5-HTTLPR polymorphism was not associated with smoking initiation in either male or female subjects. However, significant association was found between 5-HT(2C) receptor gene polymorphisms and smoking initiation in male Caucasian subjects.
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Affiliation(s)
- Maria Iordanidou
- Laboratory of Pharmacology, Medical School, Democritus University of Thrace, Dragana Campus, Alexandroupolis 68100, Greece
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Alexopoulos A, Bravou V, Peroukides S, Kaklamanis L, Varakis J, Alexopoulos D, Papadaki H. Bone regulatory factors NFATc1 and Osterix in human calcific aortic valves. Int J Cardiol 2010; 139:142-9. [PMID: 19019468 DOI: 10.1016/j.ijcard.2008.10.014] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2008] [Revised: 08/26/2008] [Accepted: 10/12/2008] [Indexed: 10/21/2022]
Abstract
BACKGROUND Emerging evidence suggests that calcific aortic valve stenosis constitutes an active process sharing common features with atherosclerosis and bone formation. To further support this hypothesis, we investigated the expression of bone regulatory factors in calcified aortic valves. METHODS-RESULTS Formalin-fixed, paraffin-embedded tissue samples of human aortic tricuspid valves (n=54) were used from patients undergoing valve replacement for calcific, non-rheumatic aortic stenosis. As controls, fourteen aortic tricuspid valves (n=14) were obtained at autopsy from patients without clinical and morphological aortic valve lesions. Sections from both stenotic and normal aortic valve leaflets were studied immunohistochemically. Interstitial cells in stenotic valves showed intense expression of Sox9, Runx2 and Osterix (Osx) whereas NFATc1 was expressed in interstitial and inflammatory cells. In addition, NFATc1 expression correlated significantly with Osx (r=0.458, p<0.001) and Runx2 (r=0.387, p<0.001). Finally, there was accumulation of activated interstitial cells, T lymphocytes and macrophages as well as intense neoangiogenesis in pathological leaflets. CONCLUSIONS The presence of NFATc1 and Osx in our material lends further support to the hypothesis that during the process of aortic valve calcification there is expression of osteoblastic phenotypes by valvular cells.
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Varnavas VC, Paraskevas KI, Iliodromitis EK, Zoga A, Glava I, Kaklamanis L, Spartinos J, Lyras T, Kremastinos DT, Mikhailidis DP, Kyriakides ZS. Chronic hind limb ischemia reduces myocardial ischemia-reperfusion injury in the rabbit heart by promoting coronary angiogenesis/arteriogenesis. In Vivo 2010; 24:147-152. [PMID: 20363986] [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] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
BACKGROUND/AIM Application of ischemic injury in a remote organ may provide protection of other tissues against ischemia. We hypothesized that ischemia in the rabbit hind limb protects against myocardial ischemia by increasing angiogenesis/arteriogenesis. MATERIALS AND METHODS In the first experiment, severe limb ischemia (LI) was induced in 26 New Zealand White rabbits by excision of the femoral artery while another 26 served as controls (no ischemia; sham operation [SHO]). Four weeks later, the blood vessels of the subendocardial and intramyocardial areas of the excised hearts were counted. In the second experiment, 14 LI rabbits and 14 SHO controls were subjected to 30 min of regional heart ischemia and 3 h reperfusion. Infarct size and the areas-at-risk were determined. RESULTS Compared with controls, LI rabbits showed more subendocardial (103+/-14 vs. 113+/-13 capillaries/mm2, respectively; p=0.01) and intramyocardial blood vessels (102+/-12 vs. 114+/-16 capillaries/mm(2), respectively; p=0.009). LI rabbits had significantly smaller infarct size compared with the SHO animals (infarct areas/areas-at-risk: 14.37+/-11.23% vs. 31.31+/-13.73%, respectively; p=0.003). CONCLUSION Chronic hind LI reduces myocardial infarct size by promoting coronary angiogenesis/arteriogenesis in an experimental model.
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Kioulafa M, Balkouranidou I, Sotiropoulou G, Kaklamanis L, Mavroudis D, Georgoulias V, Lianidou ES. Methylation of cystatin M promoter is associated with unfavorable prognosis in operable breast cancer. Int J Cancer 2009; 125:2887-92. [PMID: 19551853 DOI: 10.1002/ijc.24686] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The methylation status of cystatin M (CST6) gene in breast tumors was investigated and its prognostic significance as a novel breast cancer biomarker was evaluated. Using methylation-specific PCR (MSP), CST6 promoter methylation was examined in 134 formalin fixed paraffin-embedded tissues (FFPEs): 10 pairs of breast tumors and their surrounding normal tissues, 10 breast fibroadenomas, 11 normal breast tissues and 93 breast tumors. Methylation of CST6 promoter was observed in 2/21 (9.5%) noncancerous breast tissues, 1/10 (10%) benign breast tumors (fibroadenomas) and 52 (55.9%) operable breast cancer tumor samples. CST6 was rarely methylated in the normal tissue surrounding the tumor (10%). During the follow-up period, 24 (25.8%) patients relapsed and 19 (20.4%) died. CST6 methylation was detected in 19 (79.2%) of patients who relapsed and in 15 (78.9%) of patients who died. Disease-free-interval (DFI) and overall survival (OS) were significantly associated with CST6 promoter methylation (p=0.004 and p=0.001 respectively). Multivariate analysis revealed that CST6 methylation is an independent prognostic factor for DFI (HR=3.484; 95% CI: 1.155-10.511; p=0.027). and OS (HR=9.190; 95% CI: 1.989-42.454; p=0.004). CST6 promoter methylation status in tumor cells seems to provide important prognostic information in operable breast cancer and merits to be further evaluated and validated in a larger cohort of patients.
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Affiliation(s)
- Magdalini Kioulafa
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Athens, Athens, Greece
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Mavrogeni S, Spargias K, Markussis V, Kolovou G, Demerouti E, Papadopoulou E, Stavridis G, Kaklamanis L, Douskou M, Constantoulakis P, Cokkinos D. Myocardial Inflammation in Autoimmune Diseases: Investigation by Cardiovascular Magnetic Resonance and Endomyocardial Biopsy. ACTA ACUST UNITED AC 2009; 8:390-7. [DOI: 10.2174/1871528110908050390] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Gkouziouta A, Adamopoulos S, Manginas A, Karavolias G, Leontiadis E, Tsourelis L, Zarkalis D, Loukas L, Stavridis G, Antoniou T, Degiannis D, Melissari E, Kaklamanis L, Saroglou G, Sfirakis P, Alivizatos P. Heart Transplantation in a Low-Organ-Donation Environment: A Single Center Experience. Transplant Proc 2009; 41:4289-93. [DOI: 10.1016/j.transproceed.2009.09.079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2009] [Accepted: 09/29/2009] [Indexed: 11/30/2022]
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Kioulafa M, Kaklamanis L, Mavroudis D, Georgoulias V, Lianidou ES. Prognostic significance of RASSF1A promoter methylation in operable breast cancer. Clin Biochem 2009; 42:970-5. [PMID: 19374895 DOI: 10.1016/j.clinbiochem.2009.04.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2009] [Revised: 04/07/2009] [Accepted: 04/08/2009] [Indexed: 12/31/2022]
Abstract
OBJECTIVES The aim of our study was to evaluate the prognostic significance of RASSF1A promoter methylation status in operable breast cancer. DESIGN AND METHODS By using Methylation Specific PCR, we evaluated the specificity of RASSF1A promoter methylation in 10 breast tumors and matching normal tissues, 10 breast fibroadenomas and 11 normal breast tissues. The prognostic significance of RASSF1A methylation was validated in 93 formalin fixed paraffin-embedded (FFPE) tissues obtained from patients with operable breast cancer. RESULTS Methylation of RASSF1A promoter was observed in 1/31 (3.2%) non-cancerous breast tissues and 53/93 (57.0%) early stage breast tumors. The only positive sample in the non-cancerous breast tissues group was found in a histological normal tissue surrounding the tumor. During the follow-up period, 24/93 (25.8%) patients relapsed and 19/93 (20.4%) died. Disease-Free-Interval (DFI) was significantly associated with RASSF1A methylation (p=0.028). CONCLUSIONS RASSF1A promoter methylation provides important prognostic information in early stage breast cancer patients.
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Affiliation(s)
- Magdalini Kioulafa
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Athens, Athens, 15771, Greece
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Cholongitas E, Papadakis E, Kaklamanis L, Dasenaki M. Peripheral facial palsy in elderly: Not always a benign condition. Geriatr Gerontol Int 2009; 9:100-1. [DOI: 10.1111/j.1447-0594.2008.00511.x] [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: 11/30/2022]
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Kioulafa M, Kaklamanis L, Stathopoulos E, Mavroudis D, Georgoulias V, Lianidou ES. Kallikrein 10 (KLK10) methylation as a novel prognostic biomarker in early breast cancer. Ann Oncol 2009; 20:1020-5. [PMID: 19150938 DOI: 10.1093/annonc/mdn733] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND We evaluated the prognostic significance of KLK10 exon 3 methylation in patients with early-stage breast cancer since it has been shown to have a significant impact on biological characteristics of breast tumors. MATERIALS AND METHODS Using methylation-specific PCR, we evaluated the specificity of KLK10 methylation in 10 breast tumors and matching normal tissues, 10 breast fibroadenomas, 11 normal breast tissues and in a testing group of 35 patients. The prognostic significance of KLK10 methylation was validated in an independent cohort of 93 patients. RESULTS KLK10 was not methylated in normal breast tissues and fibroadenomas while it was in 5 of 10 breast tumors and in 1 of 10 matching normal tissues. In the testing group of 35 patients, KLK10 methylation was detected in 70.0% of patients who relapsed (P = 0.001) and in 77.8% of patients who died (P = 0.025). In the independent cohort, 53 of 93 (57.0%) patients were found positive for KLK10 methylation. During the follow-up period, 24 of 93 (25.8%) patients relapsed and 19 of 93 (20.4%) died. Disease-free interval (DFI) and overall survival (OS) were significantly associated with KLK10 methylation (P = 0.0025 and P = 0.003). Multivariate analysis revealed that KLK10 methylation was an independent prognostic factor for DFI and OS. CONCLUSION KLK10 exon 3 methylation provides important prognostic information in early breast cancer patients.
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Affiliation(s)
- M Kioulafa
- Department of Chemistry, Laboratory of Analytical Chemistry, University of Athens, Athens, Greece
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Zygalaki E, Kaklamanis L, Lolaka M, Nikolaou N, Koutouzis M, Lianidou ES, Kyriakides ZS. Systemic hypertension augments, whereas insulin-dependent diabetes down-regulates, endothelin A receptor expression in the mammary artery in coronary artery disease patients. Cardiol J 2009; 16:348-354. [PMID: 19653178] [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] [Subscribe] [Scholar Register] [Indexed: 05/28/2023] Open
Abstract
BACKGROUND Endothelin (ET) A receptor antagonism causes decreased vasodilation in hypertensive coronary arteries and decreased effects on coronary artery compliance in diabetic patients. METHODS We investigate the mRNA expression of ET-1, ET(A) and ET(B) receptors, using real time RT-PCR, in biopsies from the internal mammary artery obtained from 49 patients, 18 diabetics and 34 hypertensives, all undergoing coronary artery bypass grafting. RESULTS Hypertensive patients had higher ET-1 mRNA expression (16438 [8417, 23917]), than normotensive patients (2974 [2283, 18055], p=0.008). Diabetic patients had significantly lower ET(A) receptor levels than non-diabetic patients (455 [167, 1496] vs. 1660 [700, 3190], respectively, p = 0.003). CONCLUSIONS Multivariate analysis demonstrated that the presence of systemic hypertension was the only independent predictor of log ET(A) receptor expression and log ET-1 expression, while insulin-dependent diabetes was negatively correlated with ET(A) receptor expression. ETB receptor expression was not correlated with any predictor. Systemic hypertension is associated with increased ET-1 and ET(A) receptor mRNA expression, whereas insulin-dependent diabetes down-regulates ET(A) receptor mRNA expression in the internal mammary artery in patients with coronary artery disease undergoing bypass grafting.
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Affiliation(s)
- Eleni Zygalaki
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Athens, Greece
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Mavrogeni S, Manousakis M, Spargias K, Douskou M, Moutsopoulos H, Kaklamanis L, Cokkinos DV. 2033 Frequent detection of myocardial inflammation in autoimmune diseases. J Cardiovasc Magn Reson 2008. [DOI: 10.1186/1532-429x-10-s1-a302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Markou A, Tsaroucha EG, Kaklamanis L, Fotinou M, Georgoulias V, Lianidou ES. Prognostic value of mature microRNA-21 and microRNA-205 overexpression in non-small cell lung cancer by quantitative real-time RT-PCR. Clin Chem 2008; 54:1696-704. [PMID: 18719201 DOI: 10.1373/clinchem.2007.101741] [Citation(s) in RCA: 327] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND microRNA (miRNA) expression profiles are being intensively investigated for their involvement in carcinogenesis. We evaluated the prognostic value of mature microRNA-21 (miR-21) and mature microRNA-205 (miR-205) overexpression in non-small cell lung cancer (NSCLC). PATIENTS AND METHODS We studied 48 pairs of NSCLC fresh frozen tissue specimens collected at time of surgery and before chemotherapy. Highly specific amplification and quantification of mature miR-21 and mature miR-205 was achieved using looped real time RT-PCR. RESULTS miRNA expression, determined by real time RT-PCR, was defined by DeltaDeltaCt measurements. We detected overexpression of mature miR-21 in 25 (52.0%) of the 48 NSCLC paired specimens and overexpression of miR-205 in 31 (64.6%). Overexpression was assessed after comparison of miRNA expression in NSCLC tissues and in their corresponding noncancerous tissues with respect to U6 expression. During the follow-up period, 29 of 48 (60.4%) patients relapsed, and 23 of 48 died (47.9%). Mature miR-21 was upregulated in 16 of 29 (55.2%) patients who relapsed and 15 of 23 (65.2%) patients who died. Mature miR-205 was overexpressed in 19 of 29 patients who relapsed (65.5%) and 15 of 23 patients who died (65.2%). Mature miR-21 overexpression correlated with overall survival (OS) of the patients (P = 0.027), whereas overexpression of mature miR-205 did not. CONCLUSIONS Our results suggest that overexpression of mature miR-21 is an independent negative prognostic factor for OS in NSCLC patients.
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Affiliation(s)
- Athina Markou
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Athens, Athens, Greece
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Manginas A, Sfyrakis P, Stavridis G, Louka L, Zarkalis D, Tsourelis L, Adamopoulos S, Karavolias G, Apostolopoulou S, Antoniou T, Thanopoulos A, Rellia P, Kaklamanis L, Melissari E, Mastorakou I, Degiannis D, Manoli E, Saroglou G, Geroulanos S, Alivizatos PA. Orthotopic heart transplantation: ten years' clinical experience. Hellenic J Cardiol 2008; 49:227-237. [PMID: 18935709] [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] [Subscribe] [Scholar Register] [Indexed: 05/26/2023] Open
Abstract
INTRODUCTION Heart transplantation is the "gold standard" in the treatment of patients with end-stage heart failure who satisfy strict selection criteria. METHODS We reviewed ten years' clinical experience (1996-2006) from 53 orthotopic transplants in our centre. RESULTS Low perioperative (3.7%) and long-term (7.5%) mortality rates yielded a 95% survival rate in the first year, 92% at five years, and 70% at ten years--significantly better than the corresponding rates worldwide. In addition, excellent functional recovery was achieved in all transplant recipients. CONCLUSIONS The strict application of international criteria in the selection of both candidates and donors, together with uninterrupted, multidisciplinary follow up, have made it feasible to perform heart transplantation with excellent results, despite the curiously low number of potential recipients and the shortage of acceptable donor hearts.
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Affiliation(s)
- Athanassios Manginas
- First Division of Cardiothoracic Surgery and Transplantation Services, Onassis Cardiac Surgical Centre, Athens, Greece
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Doussis-Anagnostopoulou IA, Vassilakopoulos TP, Thymara I, Korkolopoulou P, Angelopoulou MK, Siakantaris MP, Kokoris SI, Dimitriadou EM, Kalpadakis C, Matzouranis M, Kaklamanis L, Panayiotidis P, Kyrtsonis MC, Androulaki A, Patsouris E, Kittas C, Pangalis GA. Topoisomerase IIalpha expression as an independent prognostic factor in Hodgkin's lymphoma. Clin Cancer Res 2008; 14:1759-66. [PMID: 18347177 DOI: 10.1158/1078-0432.ccr-07-1395] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE To correlate the immunohistochemical expression of topoisomerase IIalpha (topoIIalpha) in Hodgkin's lymphoma (HL) with clinicopathological parameters, the expression of Ki-67 and the outcome of patients, who had been homogenously treated with ABVD or equivalent regimens. EXPERIMENTAL DESIGN Immunohistochemistry using the monoclonal antibody Ki-S1 (topoIIalpha) was performed in 238 HL patients. MiB1 (Ki-67) expression was evaluated in 211/238. RESULTS The mean +/- SD percentage of topoIIalpha- and Ki-67-positive Hodgkin-Reed-Sternberg (HRS) cells was 63 +/- 19% (5%-98%) and 73 +/- 19% (8%-99%), respectively. The median percentage of topoIIalpha-positive HRS cells was 64% (interquartile range, 51-78%). There was no correlation between topoIIalpha expression and patient characteristics. TopoIIalpha and Ki-67 expression were correlated (Spearman's Rho 0.255, P < 0.001). TopoIlalpha expression within the highest quartile of this patient population was predictive of failure free survival (FFS) (10-year rates 82 +/- 3% vs 68 +/- 7%, P = 0.02 for patients falling into the quartiles 1-3 and 4 respectively). In multivariate analysis topoIIalpha expression was independently predictive of FFS. CONCLUSION TopoIIalpha was expressed in all cases of HL showing a correlation with Ki-67 expression. Under current standard therapy including drugs inhibiting its activity, topoIIalpha was an independent adverse predictor of FFS with no statistically significant correlation with other established prognostic factors.
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Panagiotou M, Panagopoulos ND, Ravazoula P, Kaklamanis L, Koletsis EN. Large asymptomatic left atrial myxoma with ossification: case report. J Cardiothorac Surg 2008; 3:19. [PMID: 18445263 PMCID: PMC2383893 DOI: 10.1186/1749-8090-3-19] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [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: 07/19/2007] [Accepted: 04/29/2008] [Indexed: 11/10/2022] Open
Abstract
Background Atrial myxomas are the most common primary cardiac tumors. They are usually small or moderate in size by the time of the diagnosis, exhibiting non specific cardiac or systemic symptoms, and are most frequently soft and friable without microscopic signs of ossification. We describe herein an extremely rare case of an asymptomatic giant left atrial myxoma with angiographic neovascularization and ossification. Case presentation An asymptomatic 58-year-old male with a giant left atrial tumor, was transferred to our Unit for surgical treatment. The tumor was an incidental finding during a work-up for hemoptysis due to bronchectasis. The coronary angiogram showed tumor vessels originating from the RCA. The tumor macroscopically did not resemble a myxoma, considering its dimensions (12 × 10 cm) and its solid substance. The mass was excised together with the interatrial septum and the right lateral LA wall close to the right pulmonary veins orifices. The defect was closed with Dacron patches in order to prevent malformation of both atria. The pathology study revealed a benign myxoma with excessive osteoid (mature bone) content. Conclusion We consider our case as extremely rare because of the asymptomatic course despite the large size of the tumor, the blood supply from the right coronary artery and the bone formation.
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Affiliation(s)
- Mattheos Panagiotou
- Department of Cardiothoracic Surgery, School of Medicine, University of Patras, Greece.
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