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Tsoukalas N, Giaginis C, Alexandrou P, Liontos M, Tolia M, Kiakou M, Sfiniadakis I, Kavantzas N, Patsouris E, Theocharis S. 1995P Clinical significance of cannabinoid receptor CB2 expression in non-small cell lung cancer (NSCLC). Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Tampakis A, Tampaki E, Nonni A, Patsouris E, von Flüe M, Kontzoglou K, Kouraklis G. L1CAM expression in colorectal cancer identifies patients prone to metastasis already in early-stage disease. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz155.217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Giaginis C, Karandrea D, Alexandrou P, Giannopoulou I, Tsourouflis G, Troungos C, Danas E, Keramopoulos A, Patsouris E, Nakopoulou L, Theocharis S. High Farnesoid X Receptor (FXR) expression is a strong and independent prognosticator in invasive breast carcinoma. Neoplasma 2019; 64:633-639. [PMID: 28485172 DOI: 10.4149/neo_2017_420] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Farnesoid X Receptor (FXR), a nuclear receptor superfamily member, is related with bile acids, glucose and lipids metabolism and recently with cancer. In the present study the clinical significance of FXR expression in invasive breast carcinoma was evaluated. FXR protein expression was assessed immunohistochemically on paraffin-embedded breast cancer tissues obtained from 115 breast cancer patients and was statistically analyzed with clinicopathological parameters, estrogen receptor (ER), progesterone receptor (PR) and human epidermal growth factor receptor 2 (HER2) expression, as well as with tumor cells' proliferative capacity and overall and disease-free patients' survival. FXR positivity was noted in 91 (79.1%) and high FXR expression in 51 (44.3%) out of 115 invasive breast carcinoma cases. High FXR expression was significantly associated with smaller tumor size (p=0.0318) and increased tumor cells' proliferative rate (p=0.0375). Invasive breast carcinoma patients presenting high FXR expression showed significantly longer overall and disease-free survival times compared to those with low FXR expression (log-rank test, p=0.0052 and p=0.0058). In multivariate analysis, FXR expression was identified as independent prognostic factor of overall and disease-free patients' survival (Cox-regression analysis, p=0.0023 and p=0.0049, respectively). The present data support evidence that FXR may be implicated at the earlier stage of breast malignant disease progression, being a strong and independent prognosticator of favorable overall and disease-free survival in invasive breast carcinoma.
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Tampaki EC, Tampakis A, Posabella A, Patsouris E, Kontzoglou K, Kouraklis G. Current clostridium difficile treatments: Lessons that need to be learned from the clinical trials. Hum Vaccin Immunother 2018; 14:2874-2875. [PMID: 30148975 DOI: 10.1080/21645515.2018.1493327] [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] [Indexed: 10/28/2022] Open
Abstract
Clostridium difficile infection (CDI) is the most common infectious disease cause of nosocomial diarrhea in adults in developed countries. Judging from the clinical trials on drugs used in CDIs, no approved treatment for recurrences exists, possibly indicating that a combination of treatment approaches are mandatory especially in severe infections, with current studies not being fully representative. Among the new strategies researched intensively fidaxomicin is presented, which demonstrates reduced CDI recurrences. Moreover, biotherapeutic strategies, mainly fecal microbiota transplantation but also competitive inhibition with non-toxigenic strains of C. difficile, and finally monoclonal antibodies against C. difficile toxins which offer protection against recurrences. Careful interpretation of the results based on lessons learned from previous trials conducted seems crucial. Questions are raised regarding how the results of future studies regarding new strategies researched will be managed and interpreted especially with regard to recurrence management as relevant data must be monitored for at least 30 days after end of treatment.
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Affiliation(s)
- E C Tampaki
- a Department of Propaedeutic Surgery , Laikon General Hospital, School of Medicine, National and Kapodistrian University of Athens , Greece.,b National Organization for the Provision of Healthcare Services , Department of Planning and Monitoring of Medicines Dispensing, Medicines Division , Greece
| | - A Tampakis
- a Department of Propaedeutic Surgery , Laikon General Hospital, School of Medicine, National and Kapodistrian University of Athens , Greece.,c Department of General and Visceral Surgery , University Hospital of Basel , Switzerland
| | - A Posabella
- d Department of Visceral Surgery , St. Clara Hospital , Basel , Switzerland
| | - E Patsouris
- e Department of Pathology , School of Medicine, National and Kapodistrian University of Athens , Greece
| | - K Kontzoglou
- a Department of Propaedeutic Surgery , Laikon General Hospital, School of Medicine, National and Kapodistrian University of Athens , Greece
| | - G Kouraklis
- a Department of Propaedeutic Surgery , Laikon General Hospital, School of Medicine, National and Kapodistrian University of Athens , Greece
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Tampakis A, Tampaki EC, Kontzoglou K, Patsouris E, Kouraklis G, Lardinois D. Postoperative deep wound dehiscence of thoracotomy with isolation of Corynebacterium tuberculostearicum: surgical site infection or colonization? Eur Rev Med Pharmacol Sci 2018; 21:5264-5267. [PMID: 29228443 DOI: 10.26355/eurrev_201711_13850] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Infections with Corynebacterium tuberculostearicum are very rare as in most of the cases its isolation is associated with tissue colonization rather than infection. CASE REPORT An 80-year old female patient was sent to the consultation hour of thoracic surgery for evaluation of a symptomatic persistent unilateral pleural effusion of her right lung. The differential diagnosis included either the presence of a chronic pleural empyema or the presence of malignancy. After excluding a malignancy, a decortication of the middle and lower lobe was performed, as the two lobes could not significantly re-expand. The course was further complicated by the presence of two-times deep wound dehiscence, which made necessary a rethoracotomy. The microbiologic results of the biopsies revealed the presence of only Corynebacterium tuberculostearicum with an initially questionable clinical relevance. As soon as the antibiotic treatment for Corynebacterium tuberculostearicum began, together with the use of vacuum-assisted therapy (VAC), the closure of the thoracotomy was accelerated. CONCLUSIONS Clinically relevant surgical site infections with Corynebacterium species in thoracic surgery are difficult to distinguish. Nevertheless, its combined surgical and antibiotic treatment is warranted when its relevance is questionable due to its resistance to broad-spectrum antibiotics as well as to its potential for the complicated clinical course.
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Affiliation(s)
- A Tampakis
- Department of Visceral Surgery, University Hospital of Basel, Basel, Switzerland.
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Armakolas A, Dimakakos A, Loukogiannaki C, Armakolas N, Antonopoulos A, Florou C, Tsioli P, Papageorgiou E, Alexandrou TP, Stathaki M, Spinos D, Pektasides D, Patsouris E, Koutsilieris M. IL-6 is associated to IGF-1Ec upregulation and Ec peptide secretion, from prostate tumors. Mol Med 2018; 24:6. [PMID: 30134795 PMCID: PMC6016866 DOI: 10.1186/s10020-018-0003-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 02/13/2018] [Indexed: 01/18/2023] Open
Abstract
Background Ec peptide (PEc), resulting from the proteolytic cleavage of the IGF-1Ec isoform, is involved in prostate cancer progression and metastasis, whereas in muscle tissue, it is associated with the mobilization of satellite cells prior to repair. Our aim is to determine the physiological conditions associated to the IGF-1Ec upregulation and PEc secretion in prostate tumors, as well as, the effect of tumor PEc on tumor repair. Methods IGF-1 (mature and isoforms) expression was examined by qRT-PCR, both in prostate cancer cells co-incubated with cells of the immune response (IR) and in tumors. PEc secretion was determined by Multiple Reaction Monitoring. The effect of PEc, on mesenchymal stem cell (MSC) mobilization and repair, was examined using migration and invasion assays, FISH and immunohistochemistry (IHC). The JAK/STAT signaling pathway leading to the IGF1-Ec expression was examined by western blot analysis. Determination of the expression and localization of IL-6 and IGF-1Ec in prostate tumors was examined by qRT-PCR and by IHC. Results We documented that IL-6 secreted by IR cells activates the JAK2 and STAT3 pathway through IL-6 receptor in cancer cells, leading to the IGF-1Ec upregulation and PEc secretion, as well as to the IL-6 expression and secretion. The resulting PEc, apart from its oncogenic role, also mobilizes MSCs towards the tumor, thus promoting tumor repair. Conclusions IL-6 leads to the PEc secretion from prostate cancer cells. Apart from its oncogenic role, PEc is also involved in the mobilization of MSCs resulting in tumor repair. Electronic supplementary material The online version of this article (10.1186/s10020-018-0003-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- A Armakolas
- Physiology Laboratory, Medical School, National & Kapodistrian University of Athens, 115 27, Goudi-Athens, Greece.
| | - A Dimakakos
- Physiology Laboratory, Medical School, National & Kapodistrian University of Athens, 115 27, Goudi-Athens, Greece
| | - C Loukogiannaki
- Physiology Laboratory, Medical School, National & Kapodistrian University of Athens, 115 27, Goudi-Athens, Greece
| | - N Armakolas
- Third orthopaedic clinic, KAT General Hospital, 145 61, Kifisia, Attiki, Greece
| | - A Antonopoulos
- Third orthopaedic clinic, KAT General Hospital, 145 61, Kifisia, Attiki, Greece
| | - C Florou
- Oncology Section, Second Department of Internal Medicine, Hippokration Hospital, 115 27, Athens, Greece
| | - P Tsioli
- Department of Pathology, University of Athens, Medical School, 115 27, Athens, Greece
| | - E Papageorgiou
- Physiology Laboratory, Medical School, National & Kapodistrian University of Athens, 115 27, Goudi-Athens, Greece
| | - T P Alexandrou
- Department of Pathology, University of Athens, Medical School, 115 27, Athens, Greece
| | - M Stathaki
- Physiology Laboratory, Medical School, National & Kapodistrian University of Athens, 115 27, Goudi-Athens, Greece
| | - D Spinos
- Physiology Laboratory, Medical School, National & Kapodistrian University of Athens, 115 27, Goudi-Athens, Greece
| | - D Pektasides
- Oncology Section, Second Department of Internal Medicine, Hippokration Hospital, 115 27, Athens, Greece
| | - E Patsouris
- Department of Pathology, University of Athens, Medical School, 115 27, Athens, Greece
| | - M Koutsilieris
- Physiology Laboratory, Medical School, National & Kapodistrian University of Athens, 115 27, Goudi-Athens, Greece
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Vairaktaris E, Yiannopoulos A, Vylliotis A, Yapijakis C, Derka S, Vassiliou S, Nkenke E, Serefoglou Z, Ragos V, Tsigris C, Vorris E, Critselis E, Avgoustidis D, Neukam FW, Patsouris E. Strong Association of Interleukin-6 -174 G>C Promoter Polymorphism with Increased Risk of Oral Cancer. Int J Biol Markers 2018; 21:246-50. [PMID: 17177164 DOI: 10.1177/172460080602100409] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In view of the recently found contribution of factors associated with thrombosis and inflammation to carcinogenesis, we investigated the possible association of interleukin-6 (IL-6) with an increased risk of oral cancer. In DNA samples of 162 patients with oral squamous cell carcinoma and 156 healthy controls of comparable ethnicity, age and sex, we studied the -174 G>C polymorphism in the IL-6 gene, which affects its transcription. C allele frequencies were significantly increased in patients compared to controls, 42.6% versus 23.1% (p<0.001). The CC homozygotes had a 7-fold greater risk of developing oral cancer (odds ratio 7.39, 95% CI 2.61–20.92), while the GC heterozygotes had a 4-fold greater risk (odds ratio 3.74, 95% CI 2.29–6.11). A significant increase in C alleles was observed in patients regardless of their smoking or alcohol consumption habits, early or advanced stage of cancer, and presence or absence of a family history for cancer or thrombophilia (p<0.001; Fisher's exact test). These findings suggest that the –174 G>C polymorphism, by affecting IL-6 gene expression, is strongly associated with oral oncogenesis.
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Affiliation(s)
- E Vairaktaris
- Department of Maxillofacial Surgery, University of Athens Medical School, Athens, Greece.
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Tampakis A, Tampaki EC, Trafalis D, Nonni A, Kontzoglou K, Patsouris E, Kontos M, Kouraklis G. Nestin and CD146 expression in metaplastic breast cancer: stem-cell therapy in need? Lessons reported from a male patient. Eur Rev Med Pharmacol Sci 2017; 21:4137-4140. [PMID: 29028085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE Metaplastic breast carcinomas represent a rare subtype of breast cancer exhibiting aggressive clinical features. They appear as highly chemoresistant tumors, therefore showing poor outcome and high rates of local recurrence or distant metastasis. CASE REPORT A 37-year-old greek man was referred to our hospital for evaluation of a locally advanced, ulcerated, fixed, irregular and hard in consistency mass covering his left breast and chest wall. Further work out with CT and biopsy of the tumor revealed a triple negative metaplastic breast cancer classified as cT4cN3cM1. The patient received first line chemotherapy and afterward a palliative resection of the tumor. The histology revealed the presence of a combined triple negative adenocarcinoma with a predominant metaplastic squamous carcinoma and a spindle cell (sarcomatoid) carcinoma of the breast. In the tissue sample stem cell markers, nestin and CD146 (MCAM) were expressed, enhancing the theory that cancer cells of this tumor could possibly harbor stem cell properties. The patient received several chemotherapy regimens but died 6 months after the initiation of treatment. CONCLUSIONS Metaplastic breast cancer consists of cells with stem cell properties. New targeted therapies are warranted in the view of the tumor's high resistance to conventional chemotherapy. Targeting nestin and CD146 might be a promising therapy as they seem to be implicated in the EMT pathway.
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Affiliation(s)
- A Tampakis
- Department of Surgery, University Hospital of Basel, Basel, Switzerland.
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Synetos A, Toutouzas K, Drakopoulou M, Koutajiar I, Peskesis G, Kaitozis O, Agrogiannis G, Papalois A, Stathogiannis K, Benetos G, Anagnostopoulos C, Cokkinos D, Patsouris E, Tousoulis D. P6335Local delivery of zoledronate attenuates aortic valve calcification. An experimental study. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6335] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Synetos A, Toutouzas K, Koutajiar I, Drakopoulou M, Benetos G, Stathogiannis K, Agrogiannis G, Papalois A, Anagnostopoulos C, Cokkinos D, Patsouris E, Tousoulis D. P4466Inhibition of aortic valve calcification by local delivery of zoledronic acid. An experimental PET/CT study. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4466] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Synetos A, Toutouzas K, Drakopoulou M, Koutajiar I, Stathogiannis K, Peskesis G, Papanikolaou A, Kotronias R, Agrogiannis G, Papalois A, Anagnostopoulos C, Cokkinos D, Patsouris E, Tousoulis D. P1565Attenuation of aortic valve calcification by local delivery of zoledronic acid. A PET/CT study. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1565] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Tampaki A, Tampakis A, Trafalis D, Nonni A, Kontzoglou K, Patsouris E, Kontos M, Kouraklis G. The role of tumor stem cells and the EMT mechanism as potential therapeutic targets in a male patient with metaplastic breast cancer. Breast 2017. [DOI: 10.1016/s0960-9776(17)30171-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Limouris GS, Poulantzas V, Trompoukis N, Karfis I, Chondrogiannis S, Triantafyllou N, Gennimata V, Moulopoulou LE, Patsouris E, Nikou G, Michalaki V, Fragulidis G, Paphiti M, McCready RV, Colletti PM, Cook GJ, Rubello D. Comparison of 111In-[DTPA0]Octreotide Versus Non Carrier Added 177Lu- [DOTA0,Tyr3]-Octreotate Efficacy in Patients With GEP-NET Treated Intra-arterially for Liver Metastases. Clin Nucl Med 2016; 41:194-200. [PMID: 26673241 DOI: 10.1097/rlu.0000000000001096] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
AIM In patients with progressive, metastatic neuroendocrine tumors (NET), intra-arterial radionuclide infusions with high activities of In-[DTPA]-octreotide and more recently with non-carrier added (nca) Lu-[DOTA,Tyr]-octreotate have been performed with encouraging results. However, the affinity profiles (IC50) of these radiopeptides for human sst2 receptors are markedly different (In-[DTPA]-octreotide, 22 ± 3.6 nM and nca Lu-[DOTA,Tyr]-octreotate, 1.5 ± 4.0 nM). The total administered activity is determined by organ dose limits (kidneys and bone marrow), and our aim therefore was to compare and evaluate the therapeutic efficacy of both radiopeptides in metastatic NETs. METHODS Thirty patients with gastroenteropancreatic (GEP) somatostatin-positive NETs with liver metastases confirmed on biopsy and In-pentetreotide scan were included. They were treated with In-[DTPA]-octreotide (n = 17) or nca Lu-[DOTA,Tyr]-octreotate (n = 13). Blood samples were collected 2, 4, 8, and 24 hours postadministration to calculate residence time in blood and in red marrow. The maximum percentage uptake in organs and tumors was estimated by region of interest analysis, and tumor dosimetry calculations were performed using OLINDA/EXM/ 1.0 software. RESULTS ncaLu-[DOTA,Tyr3]-octreotate blood radioactivity, expressed as a percentage of the injected dose, was significantly lower than In-[DTPA]-octreotide (P < 0.05), as clearly depicted from the time-activity curves; the background-corrected tumor uptake was significantly higher than In-[DTPA]-octreotide but without any significant difference in other organs (spleen, kidneys, and liver). CONCLUSIONS Using Lu-[DOTA,Tyr]-octreotate, a 3-fold higher absorbed dose to tumor tissue was achieved compared with In-[DTPA] octreotide. Residence time of nca Lu-[DOTA,Tyr]-octreotate results in a significantly higher absorbed dose to bone marrow compared with In-[DTPA]-octreotide. However, a drawback of In-[DTPA]-octreotide therapy is that the number of administrations would need to be almost doubled to achieve an equal therapeutic outcome as compared with Lu-[DOTA,Tyr]-octreotate.
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Affiliation(s)
- G S Limouris
- From the *Division of Nuclear Medicine-I Radiology Department, "Aretaieion" Hospital, Athens University Medical Faculty, Greece; †Department of Nuclear Medicine, Santa Maria della Misericordia Hospital, Rovigo, Italy; ‡Neurologic Clinic 'Aeginiteion' Hospital, Athens University Medical Faculty, Greece; Departments of §Pathology, and ∥II Surgery, Athens University Medical Faculty, Greece; ¶Department of Nuclear Medicine, Royal Sussex County Hosp, Brighton, UK; **Department of Radiology, University of Southern California, Los Angeles, CA; and ††Department of Cancer Imaging, Division of Imaging Sciences and Biomedical Engineering, King's College London, St Thomas' Hospital, London, UK
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Karamanou M, Patsouris E, Androutsos G. [The eminent Greek philosopher Aristotle (384-322) on respiration]. Rev Pneumol Clin 2015; 71:377-378. [PMID: 26190338 DOI: 10.1016/j.pneumo.2015.03.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Accepted: 03/30/2015] [Indexed: 06/04/2023]
Affiliation(s)
- M Karamanou
- Service d'histoire de la médecine, faculté de médecine, université d'Athènes, Athènes, Grèce.
| | - E Patsouris
- Département de pathologie, faculté de médecine, université d'Athènes, Athènes, Grèce
| | - G Androutsos
- Service d'histoire de la médecine, faculté de médecine, université d'Athènes, Athènes, Grèce
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Sakellariou S, Patsouris E. Pathology in Greece. Pathologe 2015; 36 Suppl 2:158-61. [PMID: 26391250 DOI: 10.1007/s00292-015-0090-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Pathology is the field of medicine that studies diseases. Ancient Greece hosted some of the earliest societies that laid the structural foundations of pathology. Initially, knowledge was based on observations but later on the key elements of pathology were established based on the dissection of animals and the autopsy of human cadavers. Christianized Greece under Ottoman rule (1453-1821) was not conducive to the development of pathology. After liberation, however, a series of events took place that paved the way for the establishment and further development of the specialty. The appointment in 1849 of two Professors of Pathology at the Medical School of Athens for didactical purposes proved to be the most important step in fostering the field of pathology in modern Greece. Presently in Greece there are seven university departments and 74 pathology laboratories in public hospitals, employing 415 specialized pathologists and 90 residents. The First Department of Pathology at the Medical School of Athens University is the oldest (1849) and largest in Greece, encompassing most pathology subspecialties.
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MESH Headings
- Animals
- Greece
- History, 15th Century
- History, 16th Century
- History, 17th Century
- History, 18th Century
- History, 19th Century
- History, 20th Century
- History, 21st Century
- History, Ancient
- History, Medieval
- Humans
- Pathology/history
- Pathology Department, Hospital/history
- Schools, Medical/history
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Affiliation(s)
- S Sakellariou
- First Department of Pathology, University of Athens Medical School, Mikras Assias 75, Goudi, 11527, Athens, Greece.
| | - E Patsouris
- First Department of Pathology, University of Athens Medical School, Mikras Assias 75, Goudi, 11527, Athens, Greece
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Georgiadou D, Sergentanis T, Sakellariou S, Filippakis G, Zagouri F, Vlachodimitropoulos D, Psaltopoulou T, Lazaris A, Patsouris E, Zografos G. VEGF and Id-1 in pancreatic adenocarcinoma: Prognostic significance and impact on angiogenesis. Eur J Surg Oncol 2014; 40:1331-7. [DOI: 10.1016/j.ejso.2014.01.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 11/29/2013] [Accepted: 01/04/2014] [Indexed: 12/15/2022] Open
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Amptoulach S, Lazaris A, Karadima M, Boulamatsis D, Kavatzas N, Patsouris E, Tsavaris N. Expression of Caspase-3 Predicts Prognosis in Advanced Noncardia Gastric Cancer. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu334.46] [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: 11/14/2022] Open
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18
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Tsoukalas N, Giaginis C, Alexandrou P, Tolia M, Bournakis E, Papakostidi A, Sfiniadakis I, Kavantzas N, Agapitos E, Patsouris E, Theocharis S. The Clinical and Pathological Significance of Cyclooxygenase-2 (Cox-2) and Human Antigen Receptor (Hur) Expression in Non Small Cell Lung Cancers. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu359.21] [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: 11/13/2022] Open
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Paraskevakou H, Orfanos S, Diamantis T, Konstantinidou A, Patsouris E. Primary retroperitoneal mucinous cystadenoma. A rare case with two cysts and review of the literature. Hippokratia 2014; 18:278-281. [PMID: 25694766 PMCID: PMC4309152] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
BACKGROUND Primary retroperitoneal mucinous cystadenoma is a rare neoplasm, with benign biological behavior. Delay in diagnosis and treatment of this tumor may be fatal for the patient, because of complications, such as rupture, infection and malignant transformation. CASE PRESENTATION We present a 23-year-old woman, who was admitted to the hospital because of a palpable abdominal mass and discomfort since 4 months. Computed Tomography and Magnetic Resonance Imaging scans were performed and showed two retroperitoneal cystic masses, which were excised by laparoscopy. Histological and immunohistochemical examination revealed that the inner surfaces of the cysts were lined by epithelium with features of mesothelial cells, in addition to ovarian mucinous cystadenoma. This is the 29(th) case and the second reported case with two contemporary cysts. CONCLUSION The origin of retroperitoneal mucinous cystadenomas is still unclear. Pathological and immunohistochemical findings proved that these tumors resemble ovarian mucinous cystadenomas but are unattached to the ovary and can arise at any location in the retroperitoneum. Surgical excision of the aforementioned tumors is the treatment of choice. Hippokratia 2014; 18 (3): 278-281.
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Affiliation(s)
- H Paraskevakou
- 1 Department of Pathology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - S Orfanos
- 1 Department of Surgery, University of Athens, Laiko Athens General Hospital,Athens, Greece
| | - T Diamantis
- 1 Department of Surgery, University of Athens, Laiko Athens General Hospital,Athens, Greece
| | - A Konstantinidou
- 1 Department of Pathology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - E Patsouris
- 1 Department of Pathology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
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Kalogeraki A, Korkolopoulou P, Tamiolakis D, Papadakis CE, Sepsa C, Lagoudaki E, Patsouris E. Myoepithelial carcinoma of the parotid gland. Malays J Pathol 2014; 36:51-54. [PMID: 24763235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Myoepithelial carcinomas exhibit a wide spectrum of cytomorphologic features and diverse clinical outcomes. As a result of their morphologic heterogeneity, they can be confused easily with many tumours. Herein we report the morphological features of myoepithelial carcinoma in a 74-year-old female clinically presenting with a parotid mass. FNAB revealed hypercellular, three-dimensional clusters with considerable overlapping and crowding of pleomorphic neoplastic cells which consisted predominantly of spindle cells, with oval to elongated to spindle shaped nuclei showing considerable variation in size. The excised tumour was solid, with cells arranged in trabeculae, nests and cords. Tumour cells were mixed epithelioid and spindle with eosinophilic or clear cytoplasm, with eccentric nuclei and prominent nuclei. Neoplastic cells were found in blood vessels, in the skin and facial nerve. Tumour cells were immunopositive for PAS, PAS-D, S-100 protein, GFAP, P63, CK5/ CK6, CK7, and CK14. This case illustrates that cytological features in FNAB generally reflect the histology. FNAB was able to confirm the diagnosis and guide patient management.
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Affiliation(s)
- A Kalogeraki
- University of Crete, Medical Faculty, Department of Pathology-Cytology, PO Box1393, Heraklion, 71110 Crete, Greece.
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21
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Pagida MA, Konstantinidou AE, Malidelis YI, Ganou V, Tsekoura E, Patsouris E, Panayotacopoulou MT. The human neurosecretory neurones under perinatal hypoxia: a quantitative immunohistochemical study of the supraoptic nucleus in autopsy material. J Neuroendocrinol 2013; 25:1255-1263. [PMID: 24118231 DOI: 10.1111/jne.12111] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Revised: 09/17/2013] [Accepted: 09/29/2013] [Indexed: 12/01/2022]
Abstract
In the rat, experimental manipulations that cause activation of the magnocellular neurosecretory neurones result in the synthesis, in addition to vasopressin (AVP) and oxytocin (OXY), of other neurotransmitters or peptides, including tyrosine hydroxylase (TH), the first and rate limiting enzyme for catecholamine biosynthesis. In the human neonate, our previous study showed that TH was selectively increased in AVP neurones of subjects that died from prolonged perinatal hypoxia. The purpose of the present study was to quantitatively investigate the expression of TH, AVP, OXY and neurophysin in magnocellular neurones of the human neonate in relation to the severity/duration of perinatal hypoxia, as estimated by neuropathological criteria. Autopsy was performed after obtaining parental written consent for diagnostic and research purposes. The intensity of the immunohistochemical reactions and the cellular/nuclear size were measured in the dorsolateral supraoptic nucleus using a computerised image analysis system. We showed that prolonged perinatal hypoxia resulted in the activation of the magnocellular neuroendocrine neurones of the human neonate, as indicated by their increased neuronal and nuclear size. OXY neurones appeared larger than the AVP ones at birth, possibly indicating an active role of foetal OXY during labour or even earlier. The gradual increase in the duration of the insult resulted in the reduction of intracellular AVP content, in parallel with a dramatic increase in the expression of TH, indicating a functional interaction of these peptides under neuronal activation. Ιsolated evidence in our series, obtained from an infant of a diabetic mother, raises the probability that in the case of hyperglycaemia the above pathogenetic mechanisms are diversified.
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Affiliation(s)
- M A Pagida
- First Department of Psychiatry, National Kapodistrian University of Athens, Athens, Greece
- University Mental Health Research Institute, National Kapodistrian University of Athens, Athens, Greece
| | - A E Konstantinidou
- First Department of Pathology, National Kapodistrian University of Athens, Athens, Greece
| | - Y I Malidelis
- First Department of Psychiatry, National Kapodistrian University of Athens, Athens, Greece
- University Mental Health Research Institute, National Kapodistrian University of Athens, Athens, Greece
| | - V Ganou
- First Department of Psychiatry, National Kapodistrian University of Athens, Athens, Greece
- University Mental Health Research Institute, National Kapodistrian University of Athens, Athens, Greece
| | - E Tsekoura
- Third Department of Pediatrics, National Kapodistrian University of Athens, Athens, Greece
| | - E Patsouris
- First Department of Pathology, National Kapodistrian University of Athens, Athens, Greece
| | - M T Panayotacopoulou
- First Department of Psychiatry, National Kapodistrian University of Athens, Athens, Greece
- University Mental Health Research Institute, National Kapodistrian University of Athens, Athens, Greece
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22
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Apostolou G, Apostolou N, Nikolaidou C, Kavantzas N, Patsouris E, Athanassiadou P. Cytodiagnosis of endometrial carcinoma and hyperplasia on imprint smears with additional immunocytochemistry using Ki-67 and p53 biomarkers. Cytopathology 2013; 25:86-94. [DOI: 10.1111/cyt.12095] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/15/2013] [Indexed: 11/30/2022]
Affiliation(s)
- G. Apostolou
- Department of Cytopathology; Anti-cancer Oncological Hospital St. Savvas; Athens Greece
| | - N. Apostolou
- Department of Biomedical Engineering; Olympic Polyclinic; Athens Greece
| | - C. Nikolaidou
- Department of Pathology; Anti-cancer Oncological Hospital Theagenio; Thessaloniki Greece
| | - N. Kavantzas
- Department of Pathology; Medical School; Athens University; Athens Greece
| | - E. Patsouris
- Department of Pathology; Medical School; Athens University; Athens Greece
| | - P. Athanassiadou
- Department of Cytology; Medical School; Athens University; Athens Greece
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Panousis D, Xepapadakis G, Lagoudianakis E, Karavitis G, Salemis N, Koronakis N, Patsouris E, Koronarchis D, Grosomanidis D, Chryssikos G, Ntasiou P, Kyriakidou V, Athanassiadou AM, Athanassiadou P. Prognostic value of EZH2, paxillin expression and DNA ploidy of breast adenocarcinoma: correlation to pathologic predictors. J BUON 2013; 18:879-885. [PMID: 24344012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
PURPOSE The objective of this study was to examine the association of EZH2 and paxillin expression and DNA ploidy status with pathological parameters of breast cancer, aiming to correlate tumor phenotype with its malignant behavior. METHODS EZH2 and paxillin expression and DNA ploidy were evaluated in imprint smear samples obtained from 105 breast tumors after surgical removal. RESULTS Increased expression of paxillin was associated with p53 expression (p=0.005), Ki-67 expression (p=0.018) and EZH2 expression (p<0.0001). EZH2 expression correlated with estrogen receptor (ER) and progesterone receptor (PR) status (p=0.01 and p=0.035, respectively), and expression of p53 and Ki-67 (p=0.007 and p<0.0001, respectively). Aneuploid tumors were significantly correlated with poor differentiation (p=0.000), stage of disease (p=0.000), size of the primary tumor (p=0.015), presence of nodal metastasis (p=0.001), ER status (p=0.008), cerbB2 status (p=0.012), and expression of Ki-67 (p=0.001) and EGFR (p=0.018). Multivariate analysis of ploidy results using paxillin and EZH2 expression as dependent variables revealed that aneuploid tumors were associated with disease stage and grade of differentiation, cerbB2 expression and EZH2 expression. CONCLUSION Our results show that aneuploid tumors, EZH2 expression and paxillin expression correlate with more aggressive phenotype of breast cancer.
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MESH Headings
- Biomarkers, Tumor/analysis
- Breast Neoplasms/chemistry
- Breast Neoplasms/genetics
- Breast Neoplasms/pathology
- Carcinoma, Ductal, Breast/chemistry
- Carcinoma, Ductal, Breast/genetics
- Carcinoma, Ductal, Breast/pathology
- Carcinoma, Lobular/chemistry
- Carcinoma, Lobular/genetics
- Carcinoma, Lobular/pathology
- Cell Differentiation
- Chi-Square Distribution
- Enhancer of Zeste Homolog 2 Protein
- Female
- Humans
- Logistic Models
- Lymphatic Metastasis
- Multivariate Analysis
- Neoplasm Grading
- Neoplasm Staging
- Paxillin/analysis
- Phenotype
- Ploidies
- Polycomb Repressive Complex 2/analysis
- Prognosis
- Risk Factors
- Tumor Burden
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Affiliation(s)
- D Panousis
- Breast Unit, Iaso General Hospiral, Athens, Greece
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24
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Drakopoulou M, Toutouzas K, Benetos G, Tolis E, Tsiamis E, Grassos H, Agrogiannis G, Siores E, Patsouris E, Stefanadis CH. Clinical feasibility of carotid plaque inflammation imaging by microwave radiometry. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5451] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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25
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Trigka E, Hardavella G, Saetta A, Kavantzas N, Korkolopoulou P, Anastasiou N, Patsouris E. P-227A DETAILED IMMUNOHISTOCHEMICAL ANALYSIS OF PI3K/AKT/MTOR PATHWAY IN LUNG CANCER: CORRELATION WITH PIK3CA, AKT1, K-RAS OR PTEN MUTATIONAL STATUS AND CLINICOPATHOLOGICAL FEATURES. Interact Cardiovasc Thorac Surg 2013. [DOI: 10.1093/icvts/ivt288.227] [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: 11/14/2022] Open
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26
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Grapsa D, Frangou-Plemenou M, Kondi-Pafiti A, Stergiou E, Nicolopoulou-Stamati P, Patsouris E, Chelidonis G, Athanassiadou P. “Immunocytochemical expression of P53, PTEN, FAS (CD95), P16INK4A and HPV L1 major capsid proteins in ThinPrep cervical samples with squamous intraepithelial lesions”. Diagn Cytopathol 2013; 42:465-75. [DOI: 10.1002/dc.23003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Accepted: 04/03/2013] [Indexed: 01/24/2023]
Affiliation(s)
- D. Grapsa
- Cytopathology Department; LAIKO Athens General Hospital; Athens Greece
| | | | - A. Kondi-Pafiti
- Pathology LaboratorycAreteion Hospital; University of Athens; Athens Greece
| | - E. Stergiou
- Cytopathology Department; LAIKO Athens General Hospital; Athens Greece
| | | | - E. Patsouris
- Pathology Laboratory; Medical School; University of Athens; Athens Greece
| | - G. Chelidonis
- Pathology Laboratory; Medical School; University of Athens; Athens Greece
| | - P. Athanassiadou
- Pathology Laboratory; Medical School; University of Athens; Athens Greece
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27
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Korkolopoulou P, Levidou G, El-Habr EA, Adamopoulos C, Fragkou P, Boviatsis E, Themistocleous MS, Petraki K, Vrettakos G, Sakalidou M, Samaras V, Zisakis A, Saetta A, Chatziandreou I, Patsouris E, Piperi C. Sox11 expression in astrocytic gliomas: correlation with nestin/c-Met/IDH1-R132H expression phenotypes, p-Stat-3 and survival. Br J Cancer 2013; 108:2142-52. [PMID: 23619925 PMCID: PMC3670505 DOI: 10.1038/bjc.2013.176] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Background: Sox11 is a transcription factor expressed in foetal and neoplastic brain tissue, including gliomas. It has been shown to suppress the tumourigenicity of glioma stem cells in vivo, thereby being hypothesised to function as a tumour suppressor. Methods: We investigated the expression of Sox11 in 132 diffuse astrocytomas in relation to the regulator cell marker nestin, c-Met and IDH1-R132H, which have shown to be differentially expressed among the molecular subgroups of malignant gliomas, as well as to an inducer of astrocytic differentiation, that is, signal transducer and activator of transcription (p-STAT-3), clinicopathological features and survival. Results: Sox11 immunoreactivity was identified in all tumours irrespective of grade, but being correlated with p-STAT-3. Three out of seven cases showed partial Sox11 promoter methylation. In >50% of our cases neoplastic cells coexpressed Sox11 and nestin, a finding further confirmed in primary glioblastoma cell cultures. Furthermore, nestin, c-Met and IDH1-R132H expression differed among grade categories. Cluster analysis identified four groups of patients according to c-Met, nestin and IDH1-R132H expression. The c-Met/nestin high-expressor group displayed a higher Sox11 expression. Sox11 expression was an indicator of favourable prognosis in glioblastomas, which remained in multivariate analysis and validated in an independent set of 72 cases. The c-Met/nestin high-expressor group was marginally with shorter survival in univariate analysis. Conclusions: We highlight the importance of Sox11 expression as a favourable prognosticator in glioblastomas. c-Met/nestin/IDH1-R132H expression phenotypes recapitulate the molecular subgroups of malignant glioma.
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Affiliation(s)
- P Korkolopoulou
- First Department of Pathology, Laikon General Hospital, Athens University Medical School, Athens, 115 27, Greece
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Panou M, Kavantzas N, Sergentanis T, Sakellariou S, Agrogiannis G, Chatzipantelis P, Anastasopoulou E, Soranoglou V, Zagouri F, Korkolopoulou P, Patsouris E, Bramis I, Zografos GC. Estimation of maspin's subcellular localization in invasive ductal breast cancer via light microscopy and computerized image analysis: a comparative study. J BUON 2013; 18:342-351. [PMID: 23818344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
PURPOSE Contradictory results have been reported concerning the role of maspin and its cellular distribution in breast cancer. The purpose of this study was to examine the subcellular localization (nuclear-cytoplasmic) of maspin in breast cancer and to compare the evaluation of maspin immunostaining via light microscopy (LM) to the estimation via computerized image analysis (CIA) system. We also examined correlations between maspin expression and several clinicopathological parameters. METHODS The sample consisted of 48 primary invasive ductal carcinomas (IDC) of the breast. Maspin immunostaining was quantified and graded via LM by two pathologists, separately in the nuclear and cytoplasmic compartments. Total maspin expression was also estimated via CIA system. Univariate non-parametric statistics and stepwise multivariate ordinal logistic regression were performed. RESULTS Both maspin components (nuclear and cytoplasmic) were closely associated with each other (p<0.001). Total maspin score was positively and closely associated with nuclear maspin (p<0.001) and cytoplasmic maspin (p<0.001). Total maspin , nuclear maspin and cytoplasmic maspin did not correlate significantly with either age, grade, T, N and M status, stage, micro vessel density (MVD) (CD34), ki-67, p53, estrogen receptor (ER) and HER-2 status, or with any of the 4 groups of the molecular classification. The only factor that showed a borderline inverse correlation with nuclear maspin (p=0.059) was progesterone receptors (PR) positivity. CONCLUSION The cytoplasmic and nuclear fractions of maspin seem to be closely interwoven. Evidently, both mutually intertwined counterparts were independently reflected upon the total maspin levels measured by CIA. Future studies should ideally encompass all three approaches (nuclear, cytoplasmic, total) adopted herein.
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Affiliation(s)
- M Panou
- 1st Department of Pathology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
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Georgakopoulos G, Tsiambas E, Korkolopoulos P, Kavantzas N, Karameris A, Ragkos V, Rigopoulos DN, Vilaras G, Athanasiou AE, Tatsiou D, Patsouris E. c-MYC and h-TERT co-expression in colon adenocarcinoma: a tissue microarray digitized image analysis. J BUON 2013; 18:124-130. [PMID: 23613397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
PURPOSE c-MYC oncogene is frequently deregulated by amplification in colon adenocarcinoma. c-MYC also activates telomerase by inducing expression of its catalytic subunit (h-TERT). Furthermore, telomerase activation plays a crucial role in tumorigenesis by sustaining cellular immortality. Our aim was to evaluate the significance of c-MYC and h-TERT co-expression in colon adenocarcinoma. METHODS Sixty paraffin embedded primary colon adenocarcinomas were cored at 1.5 mm diameter and transferred to one microarray block. Immunohistochemistry was performed using anti-h-TERT, and c - MYC antibodies. A quantitative digitized macro was performed to evaluate their expression. RESULTS c-MYC and h-TERT overexpression was observed in 27 (45%) and 28 (46.6%) cases, respectively. Co-over expression of those genes was observed in 17 (28.3%) cases and found to be statistically significant (p=0.001). The results also showed a strong association between c-MYC and grade of differentiation of the examined neoplasms (p=0.0217rpar;. CONCLUSION Simultaneous c-MYC and h-TERT deregulation is a relatively frequent genetic event in colon adenocarcinoma. Because c-MYC overexpression is correlated with progressive disease - due to colon adenocarcinoma dedifferentiation - inhibition of its activity combined with h-TERT regulated expression is a new target for novel therapeutic regimens.
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Affiliation(s)
- G Georgakopoulos
- Department of Internal Medicine, General Hospital of Thiva, Thiva, Greece
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30
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Tsoucalas G, Karamanou M, Skarpas G, Piagkou M, Skandalakis P, Patsouris E, Androutsos G. Joseph Gensoul's operation for sarcoma of the maxillary antrum, one century before Moore. J BUON 2012; 17:801-803. [PMID: 23335550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Joseph Gensoul is considered an important figure of the 19th century Lyonnais Medical School. His contribution to maxillofacial surgery and his legendary abilities secured him a place in the history of Medicine.
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Affiliation(s)
- G Tsoucalas
- Department of History of Medicine, Medical School, University of Athens, Greece
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31
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Panagiotou I, Tsiambas E, Lazaris AC, Kavantzas N, Konstantinou M, Kalkandi P, Ragkos V, Metaxas GE, Roukas DK, Vilaras G, Patsouris E. PTEN expression in non small cell lung carcinoma based on digitized image analysis. J BUON 2012; 17:719-723. [PMID: 23335531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
PURPOSE HER2 depended signalling pathway is dereg-ulated in a subset of non small cell lung carcinoma (NSCLC). The tumor suppressor gene PTEN (10q21) regulates the HER2/PI3K/Akt signalling pathway. Our aim was to evaluate PTEN protein expression in NSCLC based on a quantitative analysis method correlating also the results with clinicopathological parameters. METHODS Protein expression was determined by immunohistochemistry (IHC) in 61 paraffin-embedded cases of patients with NSCLC. Digital image analysis (staining intensity levels) was performed in the corresponding immunostained slides. RESULTS Loss of PTEN expression was observed in 24 (39.34%) cases, low expression in 29 (47.54%) and overexpression in 8 (13.12%) cases. Multivariate analysis determined that PTEN overexpression was associated with lower risk to develop metastases (p=0.05). CONCLUSION PTEN deregulation is a relatively frequent genetic event in NSCLC, associated with progressive metastatic process in those patients. Because of binding to the ErbB2 receptor, trastuzumab stabilizes and activates PTEN gene, and loss of its expression negatively affects the response rates in such patients.
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Affiliation(s)
- I Panagiotou
- Department of Thoracic Surgery, 401 GA Hospital of Athens, Athens, Greece
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32
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Tsiambas E, Karameris A, Lygeros M, Athanasiou AE, Salemis NS, Gourgiotis S, Ragkos V, Metaxas GE, Vilaras G, Patsouris E. Gene numerical imbalances in cytological specimens based on fluorescence/chromogenic in situ hybridization analysis. J BUON 2012; 17:593-599. [PMID: 23033306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Design and development of novel targeted therapeutic strategies is an innovation in handling patients with solid malignancies including breast, colon, lung, head & neck or even pancreatic and hepatocellular carcinoma. For a long time, immunohistocytochemistry (IHC/ICC) has been performed as a routine method in almost all labs for evaluating protein expression. Modern molecular approaches show that identification of specific structural and numerical imbalances regarding genes involved in signal transduction pathways provide important data to the oncologists. Alterations in molecules such as epidermal growth factor receptor (EGFR), HER2/neu, PTEN or Topoisomerase IIa affect the response rates to specific chemotherapeutic agents modifying also patients' prognostic rates. In situ hybridization (ISH) techniques based on fluorescence and chromogenic variants (FISH/CISH) or silver in situ hybridization (SISH) are applicable in both tissue and cell substrates. Concerning cytological specimens, FISH/CISH analysis appears to be a fast and very accurate method in estimating gene/chromosome ratios. In this paper, we sought to evaluate the usefulness of FISH/ CISH analysis in cytological specimens, describing also the advantages and disadvantages of these methods from the technical point of view.
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Affiliation(s)
- E Tsiambas
- Department of Pathology, Medical School, University of Athens, Athens, Greece.
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Tasioudi KE, Saetta AA, Sakellariou S, Levidou G, Michalopoulos NV, Theodorou D, Patsouris E, Korkolopoulou P. pERK activation in esophageal carcinomas: clinicopathological associations. Pathol Res Pract 2012; 208:398-404. [PMID: 22658382 DOI: 10.1016/j.prp.2012.05.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Revised: 03/28/2012] [Accepted: 05/08/2012] [Indexed: 12/24/2022]
Abstract
MAPK (mitogen-activated protein kinase) pathway is considered a control regulator in various malignant tumors but its role in esophageal carcinomas remains elusive. In our study, we examined the possible prognostic significance of MAPK pathway in human esophageal cancer. We searched for mutations in exons 18-21 of EGFR gene, codons 12 and 13 of K-RAS gene and exon 15 of B-RAF gene by high resolution melting analysis (HRMA) and pyrosequencing in 44 esophageal carcinomas. Immunohistochemistry was performed in 29 cases in order to evaluate expression levels of pERK (extracellular-signal regulated kinase). In one laser microdissected squamous cell carcinoma, a somatic K-RAS mutation at codon 12 was detected, whereas none of the cases displayed mutations in EGFR and B-RAF genes. Elevated nuclear as well as cytoplasmic pERK expression (100% and 62% of cases respectively) was observed independently of EGFR and B-RAF mutational status. Increasing pERK nuclear and cytoplasmic expression as well as the intensity of nuclear staining was found to be significantly correlated with tumor grade in univariate and multivariate statistical analysis. Our findings depict the presence of activated ERK despite the low frequency of upstream alterations, implicating ERK activation in the acquisition of a more aggressive phenotype in esophageal cancer.
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Affiliation(s)
- K E Tasioudi
- 1st Department of Pathology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Assias, Goudi 11527, Greece.
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Kosmas K, Stamoulas M, Marouga A, Kavantzas N, Patsouris E, Athanassiadou P. Expression of ki-67 as proliferation biomarker in imprint smears of endometrial carcinoma. Diagn Cytopathol 2011; 41:212-7. [DOI: 10.1002/dc.21825] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Accepted: 08/05/2011] [Indexed: 01/24/2023]
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Zografou A, Tsigris C, Papadopoulos O, Kavantzas N, Patsouris E, Donta I, Perrea D. Improvement of skin-graft survival after autologous transplantation of adipose-derived stem cells in rats. J Plast Reconstr Aesthet Surg 2011; 64:1647-56. [PMID: 21839697 DOI: 10.1016/j.bjps.2011.07.009] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Revised: 06/21/2011] [Accepted: 07/09/2011] [Indexed: 12/23/2022]
Abstract
BACKGROUND Skin grafts are frequently used for a variety of indications in plastic and reconstructive surgery. Their necrosis is a common complication, while different therapies have been proposed. Currently, adipose-derived stem cells (ASCs) hold great promise for their angiogenic potential and role during tissue repair. In this study, autologous transplantation of ASCs was used in skin grafts in rats to determine if it increases angiogenesis, skin-graft survival and wound healing. METHODS ASCs were isolated, cultured, labelled with fluorescent dye and injected under full-thickness skin grafts in 10 rats (group 1), while 10 others served as controls (group 2). Skin grafts were analysed after 1 week. Collagen's framework was assessed with Masson's trichrome stain and angiogenesis with von Willebrand factor (vWF) immunohistochemistry. In addition, immunohistochemical staining intensity of vascular endothelial growth factor (VEGF) and transforming growth factor b3 (TGFb3) was assessed in all grafts. RESULTS Mean area of graft necrosis was significantly less in group 1 than in group 2 (6.12% vs. 32.62%, p<0.01). Statistically significant increase of microvessel density, collagen density, VEGF and TGFb3 expression was noted in group 1 compared with group 2 (all: p<0.01). CONCLUSIONS These findings suggest that autologous ASCs transplantation increases full-thickness skin-graft survival and shows promise for use in skin-graft surgery. This might be both due to in situ differentiation of ASCs into endothelial cells and increased secretion by ASCs of growth factors, such as VEGF and TGFb3 that enhance angiogenesis and wound healing.
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Affiliation(s)
- A Zografou
- Laboratory of Experimental Surgery and Research, Surgical Department, University of Athens School of Medicine, 15B Ag. Thoma Str., Athens, Greece.
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Grapsa D, Ioakim-Liossi A, Stergiou E, Petrakakou E, Nicolopoulou-Stamati P, Patsouris E, Athanassiadou P. Additional slides from residual ThinPrep Pap tests: Of potential diagnostic benefit in equivocal cases? Diagn Cytopathol 2011; 40:856-60. [PMID: 21485025 DOI: 10.1002/dc.21642] [Citation(s) in RCA: 3] [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] [Subscribe] [Scholar Register] [Received: 09/16/2010] [Accepted: 12/09/2010] [Indexed: 11/07/2022]
Abstract
The aim of this study was to further evaluate the diagnostic significance of additional slides prepared from residual ThinPrep (TP) Pap Tests. Up to 10 repeat slides were prepared from 105 residual TP cervical samples. All additional slides were evaluated for the presence of diagnostic elements which were not found on the primary TP slide. After the evaluation of the repeat slides, an upgraded diagnosis was noted in 15 cases (14.3%). The reclassified cases included: three negative cases reclassified as two ASC-US and as one LSIL, seven cases of ASC-US reclassified as six LSIL and as one HSIL, and five cases of LSIL reclassified as HSIL. The highest rate (7/15 cases, 46.7%) of cases with an upgraded diagnosis was noted in the ASC-US diagnostic category. Our results suggest that repeat processing of residual TP cervical samples may represent an adjunctive diagnostic tool for a more accurate classification of ASC-US cases. Nevertheless, the practical value of this approach seems to be limited by its significant cost and its uncertain effectiveness.
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Affiliation(s)
- D Grapsa
- Cytopathology Department, LAIKO Athens General Hospital, Athens, Greece.
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Salemis N, Tsiambas E, Gourgiotis S, Karameris A, Patsouris E. P130 Significance of simultaneous estrogen receptor 1 gene and topoisomerase IIA imbalances in breast carcinoma based on tissue microarrays analysis. Breast 2011. [DOI: 10.1016/s0960-9776(11)70074-1] [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] Open
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Grapsa D, Ioakim-Liossi A, Stergiou E, Petrakakou E, Nicolopoulou-Stamati P, Patsouris E, Athanassiadou P. Repeat processing of residual ThinPrep Pap tests: sampling of the vial may not be invariably homogeneous. Acta Cytol 2011; 55:213-7. [PMID: 21325810 DOI: 10.1159/000320912] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2010] [Accepted: 07/06/2010] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To re-evaluate the reproducibility of additional slides prepared from residual cervical ThinPrep (TP) samples. STUDY DESIGN Sixty paired specimens (conventional smears and direct-to-vial TP) were studied. Up to 10 additional slides were prepared from each TP vial. All slides were reviewed for adequacy of material, presence of abnormal cells and presence of normal flora or other pathogens. The additional TP slides were further evaluated for the presence of diagnostic elements which were not found on the conventional smear and primary TP slide. RESULTS Abnormal cells found on the primary TP slide were also identified on all additional slides in 48/50 cases (96%) with squamous cell lesions. The distribution of material on TP slides was evaluated as homogenous in 51 cases (85%) and as non-homogenous in 9 (15%). Using the primary slides (conventional smear and TP) as a reference, additional diagnostic cells upgrading the cytologic diagnosis were found on the repeat slides in 7 cases (11.7%) and fungi consistent with Candida in 3 (5%). CONCLUSION Repeat processing of residual cervical TP samples may not be an invariably reproducible procedure and the first slide may not be necessarily representative of the specimen as a whole. Nevertheless, both primary and repeat TP slides seem to be extremely effective in detecting a lesion (regardless of grade) in abnormal cases. The exact impact of non-homogeneous sampling of the vial on the diagnostic accuracy of the TP method should be further investigated.
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Affiliation(s)
- D Grapsa
- Cytopathology Department, LAIKO Athens General Hospital, Athens, Greece.
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Avraam K, Pavlakis K, Papadimitriou C, Vrekoussis T, Panoskaltsis T, Messini I, Patsouris E. The prognostic and predictive value of ERCC-1, p53, bcl-2 and bax in epithelial ovarian cancer. EUR J GYNAECOL ONCOL 2011; 32:516-520. [PMID: 22053665] [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: 05/31/2023]
Abstract
AIM To evaluate the expression of ERCC-1 in patients with epithelial ovarian cancer (EOC) and to correlate it with the expression of p53, bcl-2 and bax. MATERIALS AND METHODS Tumor samples from 60 patients with EOC were immunohistochemically investigated for the expression of ERCC1, p53, bcl-2 and bax. RESULTS ERCC-1 expression was significantly decreased in serous and endometrioid compared to clear cell carcinomas. P53 expression was significantly increased in serous compared to clear cell carcinomas. Bax expression was significantly increased in serous carcinomas as compared to MMTs. High disease stage was correlated with low ERCC-1 and high bcl-2 expression. ERCC-1 expression was associated with increased disease-free interval. CONCLUSION ERCC-1 status seems to be correlated with disease-free interval, stage and tumor histologic subtype in patients with EOC. Nevertheless, our results indicate that single-gene expressions may be unreliable and thus caution is needed when used as potential prognostic or predictive markers.
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Affiliation(s)
- K Avraam
- First Department of Pathology, Medical School, University of Athens, Greece
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Panousis D, Patsouris E, Lagoudianakis E, Pappas A, Kyriakidou V, Voulgaris Z, Xepapadakis G, Manouras A, Athanassiadou AM, Athanassiadou P. The value of TOP2A, EZH2 and paxillin expression as markers of aggressive breast cancer: relationship with other prognostic factors. EUR J GYNAECOL ONCOL 2011; 32:156-159. [PMID: 21614903] [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: 05/30/2023]
Abstract
INTRODUCTION The immunocytochemical expression of topoisomerase II alpha (TOP2A), enhancer of zeste homologue 2 (EZH2) and paxillin has recently gained increasing attention. Although previous studies have commented on the clinical usefulness of these markers, their role remains controversial. AIM The purpose of the study was to investigate the expression of TOP2A, EZH2 and paxillin in relation to classic prognostic parameters and their significance as prognostic markers in imprints of resected breast carcinomas. METHODS Imprint smears from 55 patients who underwent surgical treatment for primary carcinoma in our department between 2005 and 2006 were studied immunocytochemically with the use of TOP2A, EZH2 and paxillin antibodies. RESULTS The expression of TOP2A correlated with higher histologic grade, tumor size and negative PR expression. High intensity staining for EZH2 expression was associated with higher histologic grade, negative ER and PR expression and positive Ki-67 expression. The expression of paxillin showed no correlation with estrogen/progesterone and HER2 expression nor with tumor grade and stage. CONCLUSION Our data indicate that TOP2A and EZH2 expression are related to a more aggressive tumor phenotype. The expression of paxillin failed to correlate with any of the studied clinicopathologic factors. Further studies are needed to verify these results.
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Affiliation(s)
- D Panousis
- Department of Breast Surgery, Iaso General Hospital, Athens, Greece
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Papagiorgis PC, Zizi AE, Tseleni S, Oikonomakis IN, Sofras L, Elemenoglou IS, Patsouris E, Nikiteas NI. Site impact on colorectal cancer biological behavior in terms of clinicopathological and molecular features. J BUON 2011; 16:84-92. [PMID: 21674855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
PURPOSE We investigated the biological behavior of proximal and distal colorectal adenocarcinomas (CRC), intending to determine specific segmental differences, possibly arising from the distinct genetic pathways involved in their development. METHODS Thirty-six proximal and 83 distal cancers were comparatively and retrospectively analyzed, regarding tumor stage, grade and Ki-67, p53 and Bcl-2 immunohistochemical expression. RESULTS Proximal tumors were more likely to be poorly differentiated (p=0.005) and to exhibit low Ki-67 and p53 expression (<20% and ≤ 30% stained nuclei respectively; p=0.026 and 0.0014, respectively). Distal lesions were more likely to be moderately differentiated (p=0.001), to display moderate Ki-67 expression (20-50% stained nuclei, p= 0.013) and p53 staining higher than 30% stained nuclei (p= 0.0014). Such segmental variations regarding mainly p53 and to a lesser extent Ki-67 were seen within most of the specific sub-groups of patients (stratified by stage, grade, gender and age). An association between Bcl-2 expression and distal site was also observed among females (p=0.008). CONCLUSION Proximal and distal cancers displayed different clinicopathological and molecular patterns, reinforcing the proposal that they are genetically and biologically different entities. Potential clinical applications of these findings should be investigated.
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Affiliation(s)
- P C Papagiorgis
- Department of Surgery, Athens Medical Center, Athens, Greece.
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Toutouzas K, Grassos H, Synetos A, Drakopoulou M, Tsiamis E, Moldovan C, Agrogiannis G, Patsouris E, Siores E, Stefanadis C. A new non-invasive method for detection of local inflammation in atherosclerotic plaques: experimental application of microwave radiometry. Atherosclerosis 2010; 215:82-9. [PMID: 21256490 DOI: 10.1016/j.atherosclerosis.2010.12.019] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2010] [Revised: 12/09/2010] [Accepted: 12/14/2010] [Indexed: 11/16/2022]
Affiliation(s)
- K Toutouzas
- First Department of Cardiology, Hippokration Hospital, and Department of Pathology, Athens Medical School, Athens, Greece.
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Zagouri F, Sergentanis T, Nonni A, Papadimitriou C, Pazaiti A, Michalopoulos NV, Safioleas P, Lazaris A, Theodoropoulos G, Patsouris E, Zografos G. Decreased Hsp90 expression in infiltrative lobular carcinoma: an immunohistochemical study. BMC Cancer 2010; 10:409. [PMID: 20691061 PMCID: PMC2925828 DOI: 10.1186/1471-2407-10-409] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [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: 11/13/2009] [Accepted: 08/06/2010] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Elevated Hsp90 expression has been documented in breast ductal carcinomas, whereas decreased Hsp90 expression has been reported in precursor lobular lesions. This study aims to assess Hsp90 expression in infiltrative lobular carcinomas of the breast. METHODS Tissue specimens were taken from 32 patients with infiltrative lobular carcinoma. Immunohistochemical assessment of Hsp90 was performed both in the lesion and the adjacent normal breast ducts and lobules; the latter serving as control. Concerning Hsp90 assessment: i) the percentage of positive cells and ii) the intensity were separately analyzed. Subsequently, the Allred score was adopted and calculated. The intensity was treated as an ordinal variable-score (0: negative, low: 1, moderate: 2, high: 3). Statistical analysis followed. RESULTS All infiltrative lobular carcinoma foci mainly presented with a positive cytoplasmic immunoreaction for Hsp90. Compared to the adjacent normal ducts and lobules, infiltrative lobular carcinoma exhibited a statistically significant decrease in Hsp90 expression, both in terms of Hsp90 positive cells (%) and Allred score (74.2 +/- 11.2 vs. 59.1 +/- 14.2 p = 0.0001; 7.00 +/- 0.95 vs. 6.22 +/- 1.01, p = 0.007, Wilcoxon matched-pairs signed-ranks test). Concerning the intensity of Hsp90 immunostaining only a marginal decrease was noted (2.16 +/- 0.68 vs. 1.84 +/- 0.63, p = 0.087, Wilcoxon matched-pairs signed-ranks test). CONCLUSION ILC lesions seem to exhibit decreased Hsp90 expression, a finding contrary to what might have been expected, given that high Hsp90 expression is a trait of invasive ductal carcinomas.
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Affiliation(s)
- Flora Zagouri
- Breast Unit, 1stDepartment of Propaedeutic Surgery, Hippokratio Hospital, School of Medicine, University of Athens, Athens, Greece
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Zagouri F, Sergentanis TN, Nonni A, Papadimitriou CA, Michalopoulos NV, Domeyer P, Theodoropoulos G, Lazaris A, Patsouris E, Zogafos E, Pazaiti A, Zografos GC. Hsp90 in the continuum of breast ductal carcinogenesis: Evaluation in precursors, preinvasive and ductal carcinoma lesions. BMC Cancer 2010; 10:353. [PMID: 20602789 PMCID: PMC2912866 DOI: 10.1186/1471-2407-10-353] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [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: 12/26/2009] [Accepted: 07/05/2010] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Hsp90 (heat shock protein90) is a chaperone protein essential for preserving and regulating the function of various cellular proteins. Elevated Hsp90 expression seems to be a trait of breast cancer and may be an integral part of the coping mechanisms that cancer cells exhibit vis-à-vis stress. This manuscript tries to examine the immunohistochemical expression of Hsp90 all along the continuum of breast ductal lesions encompassing ductal hyperplasia without atypia (DHWithoutA), atypical ductal hyperplasia (ADH), ductal carcinoma in situ (DCIS) and invasive ductal carcinoma (IDC). METHODS Tissue specimens were taken from 30 patients with DHWithoutA, 31 patients with ADH, 51 with DCIS and 51 with IDC. Immunohistochemical assessment of Hsp90 was performed both in the lesion and the adjacent normal breast ducts and lobules; the latter serving as control. Concerning Hsp90 assessment the percentage of positive cells and the intensity were separately analyzed. Subsequently, the Allred score was calculated. Post hoc analysis on the correlations between Hsp90 Allred score and possible predictors (grade, nodal status, tumor size, ER Allred score, PR Allred score, c-erbB-2 status and triple negative status) was conducted in IDC. RESULTS Hsp90 exhibited mainly cytoplasmic immunoreactivity. Hsp90 Allred score exhibited an increasing trend along the continuum of breast ductal lesions (Spearman's rho = 0.169, p = 0.031). Compared to the adjacent normal ducts and lobules, no statistically significant differences were noted in DHwithoutA, ADH and DCIS. Hsp90 expression (intensity, positive cells, Allred score) was higher in IDC, compared to the adjacent normal tissue. Higher Hsp90 expression was observed in grade 2/3 IDCs (borderline association) and tumors of larger size. At the univariable analysis, higher Hsp90 expression was associated with higher ER Allred score, PR Allred score and c-erbB-2 positivity in IDC. Triple-negative IDCs exhibited significantly lower Hsp90 expression. The multivariable logistic regression model revealed that between the three markers, solely ER Allred score and c-erbB-2 positivity were independently associated with higher Hsp90 expression in IDC. CONCLUSION The above point to significant variability in Hsp90 expression with significant implications upon the effectiveness and limitations of anti-Hsp90 drugs.
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Affiliation(s)
- Flora Zagouri
- Breast Unit, 1st Department of Propaedeutic Surgery, Hippokratio Hospital, School of Medicine, University of Athens, Greece
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Ioannidis I, Dimo B, Karameris A, Vilaras G, Gakiopoulou H, Patsouris E, Lazaris AC. Comparative study of the immunohistochemical expression of metalloproteinases 2, 7and 9between clearly invasive carcinomas and "in situ" trophoblast invasion. Neoplasma 2010; 57:20-8. [PMID: 19895168 DOI: 10.4149/neo_2010_01_020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
KEYWORDS Matrix metalloproteinases (MMPs) are endopeptidases considered to participate in the transient invasive property of trophoblastic cells during embryo implantation and placentation. The same molecules play an important role in the invasive and metastatic potential of cancer cells. The aim of this study was to compare the immunohistochemical expression of MMP2, 7and 9between clearly invasive carcinomas and "in situ" trophoblast invasion in an effort to illuminate their distinct roles in uncontrolled and controlled invasion. <br />We performed an immunohistochemical analysis of 45 clearly invasive carcinomas of various organs (colorectal, gastric, breast, pulmonary, renal) and 40 first trimester gestation specimens (before the 9th week of gestation). The markers expression was evaluated semiquantitavely, seperately in cancer parenchymal and gestational trophoblastic cells as well as cancer stromal and decidual cells, according to apercentage scale (0 %, 50% of cells) and according to staining intensity (0, +, ++, +++). <br />MMP9 was expressed more often in the malignant parenchymal as well as in the malignant stromal component of carcinomas than in the trophoblastic (p=0, 0118) and decidual (p=0,017) component of gestations respectively. Although all carcinomas and almost all gestation specimens stained for MMP2 and MMP7, the immunostaining for both molecules was statistically more extensive and intense in trophoblasts and decidual cells by comparison to cancerous elements.<br />In conclusion, although there seems to be adirect link between cancer invasion and MMP9 immunohistochemical expression, the role of MMP2 and MMP7 appears to be more complicated underlining the complexity of the mechanisms involved in cancer spreading.
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Affiliation(s)
- I Ioannidis
- Department of Pathology, 417 N.I.M.T.S Hospital, Athens, Greece.
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Tsiambas E, Karameris A, Alexandrakis G, Manaios L, Vilaras G, Patsouris E, Dourakis S. 720 Simultaneous HER2/neu and PTEN deregulation correlates with aggressive phenotype in hepatocellular carcinoma: a tissue microarray analysis. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)71517-2] [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: 11/29/2022] Open
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Panoussis D, Ntasiou P, Kyriakidou V, Patsouris E, Koufoudakis D, Xepapadakis G, Koronarchis D, Athanassiadou A, Athanassiadou P. 194 DNA ploidy in relationship with EZH2 expression as markers of breast carcinomas. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)70224-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: 11/28/2022] Open
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Rigopoulos DN, Tsiambas E, Lazaris AC, Kavantzas N, Papazachariou I, Kravvaritis C, Tsounis D, Koliopoulou A, Athanasiou AE, Karameris A, Manaios L, Sergentanis TN, Patsouris E. Deregulation of EGFR/VEGF/HIF-1a signaling pathway in colon adenocarcinoma based on tissue microarrays analysis. J BUON 2010; 15:107-115. [PMID: 20414936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
PURPOSE Overexpression of epidermal growth factor receptor (EGFR) and vascular endothelial growth factor (VEGF) in colon adenocarcinoma (CA) is a frequent event, whereas specific deregulation mechanisms in the corresponding signaling pathways remain under investigation. Our aim was to co-evaluate their expression correlated to the hypoxia inducible factor 1alpha (HIF-1a), which activates the transcription of VEGF gene. METHODS 60 paraffin-embedded primary CAs were cored at 1.5 mm diameter and transferred to the microarray block. Immunohistochemistry (IHC) was performed using anti-EGFR, -VEGF, and -HIF 1a monoclonal antibodies. Concerning EGFR, quantitative evaluation was based on a semi-automated analysis system. Chromogenic in situ hybridization (CISH) was performed using EGFR gene and chromosome 7 centromeric probes. RESULTS Protein overexpression was observed in 13/60 (21.6%), 45/60 (75%) and 7/60 (11.6%) cases regarding EGFR, VEGF, and HIF 1a, respectively. CISH analysis detected 4/60 (6.6%) EGFR gene amplified cases, whereas chromosome 7 aneuploidy was identified in 11/60 (18.3%) cases. Significant associations raised correlating stage to chromosome 7 (p=0.024), HIF 1a expression to tumor anatomical location (p=0.019) and also VEGF to HIF 1a expression (p=0.001), whereas EGFR expression was not associated to EGFR gene copies. CONCLUSION According to our results, chromosome 7 instability is correlated to advanced disease, whereas a significant subset of CAs demonstrates an alternative, non- HIF 1a depended mechanism of VEGF overexpression. Furthermore, EGFR protein overexpression does not predict a specific gene deregulation mechanism.
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Affiliation(s)
- D N Rigopoulos
- Department of Internal Medicine, 401 General Army Hospital, Athens, Greece
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Tsiambas E, Kravvaritis C, Tsounis D, Salemis NS, Niotis A, Niotis TH, Rigopoulos DN, Karameris A, Athanasiou AE, Patsouris E, Karakitsos P. Correlation between different p53 expression patterns and chromosome 17 imbalances in pancreatic ductal adenocarcinoma based on tissue microarray analysis. J BUON 2010; 15:94-100. [PMID: 20414934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
PURPOSE p53 (gene location: 17p13.1) overexpression is a common event in pancreatic ductal adenocarcinoma (PDAC), a highly aggressive malignant neoplasm. Although specific mechanisms of p53 gene deregulation have been identified, correlation between p53 expression and chromosome 17 gross numerical imbalances (aneuploidy) are under investigation. METHODS Using tissue microarray technology, 60 paraffin-embedded tissue samples of histologically confirmed primary PDACs were cored and re-embedded to the final recipient block. Immunohistochemistry (IHC) for p53 expression and chromogenic in situ hybridization (CISH) for chromosome 17 numerical alterations were performed. Digital image analysis was applied for p53 expression levels evaluation (Nuclear Labelling Index-NLIs). RESULTS p53 overexpression was detected in 38/60 (63.3%), whereas chromosome 17 aneuploidy was observed in 21/60 (35%) cases, respectively. Polysomy was identified in 19 cases, whereas monosomy in 2 of them. p53 overall expression was strongly correlated to the stage of the examined tumors (p=0.02). Chromosome aneuploidy was not associated to tumors' stage and grade (p=0.42, p=0.71, respectively). Although overall chromosome 17 centromeric imbalances were not correlated with p53 overexpression (p=0.32), both cases with monosomy demonstrated high expression levels. CONCLUSION p53 overexpression combined with chromosome 17 numerical imbalances characterizes a significant proportion of PDACs. Because commercially available antip53 antibodies detect mutant and also wild-type protein expression levels, chromosome 17 monosomy maybe is a gross genetic criterion for discriminating them due to point mutation that frequently affects the remaining allele.
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Affiliation(s)
- E Tsiambas
- Department of Pathology, Medical School, University of Athens, Athens, Greece.
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Manolakou P, Angelopoulou R, Bakoyiannis C, Psathas E, Bastounis E, Kavantzas N, Patsouris E. Cellular proliferation in complicated versus uncomplicated atherosclerotic lesions: Total cell population, foam cells and newly formed microvessels. Tissue Cell 2009; 41:408-13. [DOI: 10.1016/j.tice.2009.05.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2009] [Revised: 05/20/2009] [Accepted: 05/25/2009] [Indexed: 11/29/2022]
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