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Kollaras V, Valsami G, Lambropoulou M, Konstandi O, Kostomistsopoulos N, Pikoulis E, Simopoulos C, Tsaroucha A. Effect of silibinin on the expression of MMP2, MMP3, MMP9 and TIMP2 in kidney and lung after hepatic ischemia/reperfusion injury in an experimental rat model. Acta Cir Bras 2021; 36:e360904. [PMID: 34755764 PMCID: PMC8580512 DOI: 10.1590/acb360904] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 08/12/2021] [Indexed: 11/22/2022] Open
Abstract
PURPOSE The protective effect of silibinin on kidney and lung parenchyma during hepatic ischemia/reperfusion injury (IRI) is explored. METHODS Sixty-three Wistar rats were separated into three groups: sham; control (45 min IRI); and silibinin (200 μL silibinin administration after 45 min of ischemia and before reperfusion). Immunohistochemistry and real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR) were used to evaluate the expression levels of MMP2, MMP3, MMP9, and TIMP2 on kidney and lung. RESULTS Comparing sham vs. control groups, confirmed that hepatic IRI increased both renal and lung MMP2, MMP3, MMP9 and TIMP2 expressions starting at 180 min (p<0.001). Comparison of the control vs. silibinin groups showed a statistically significant decrease in the expression levels of MMP2, MMP3, and MMP9 and increase of TIMP2 in kidney and lung parenchyma. The starting point of this decrease was at 120 min after reperfusion, both for kidney and lung parameters, and it was statistically significant at 240 min (p<0.001) for kidney, while silibinin showed a peak of lung protection at 180 min after hepatic reperfusion (p<0.001). CONCLUSIONS Hepatic IRI causes distant kidney and lung damage, while a statistically significant protective action, both on kidney and lung parenchyma, is conveyed by the intravenous administration of silibinin.
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Mitsala A, Tsalikidis C, Pitiakoudis M, Simopoulos C, Tsaroucha AK. Artificial Intelligence in Colorectal Cancer Screening, Diagnosis and Treatment. A New Era. ACTA ACUST UNITED AC 2021; 28:1581-1607. [PMID: 33922402 PMCID: PMC8161764 DOI: 10.3390/curroncol28030149] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [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: 03/02/2021] [Revised: 04/09/2021] [Accepted: 04/20/2021] [Indexed: 12/24/2022]
Abstract
The development of artificial intelligence (AI) algorithms has permeated the medical field with great success. The widespread use of AI technology in diagnosing and treating several types of cancer, especially colorectal cancer (CRC), is now attracting substantial attention. CRC, which represents the third most commonly diagnosed malignancy in both men and women, is considered a leading cause of cancer-related deaths globally. Our review herein aims to provide in-depth knowledge and analysis of the AI applications in CRC screening, diagnosis, and treatment based on current literature. We also explore the role of recent advances in AI systems regarding medical diagnosis and therapy, with several promising results. CRC is a highly preventable disease, and AI-assisted techniques in routine screening represent a pivotal step in declining incidence rates of this malignancy. So far, computer-aided detection and characterization systems have been developed to increase the detection rate of adenomas. Furthermore, CRC treatment enters a new era with robotic surgery and novel computer-assisted drug delivery techniques. At the same time, healthcare is rapidly moving toward precision or personalized medicine. Machine learning models have the potential to contribute to individual-based cancer care and transform the future of medicine.
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Affiliation(s)
- Athanasia Mitsala
- Second Department of Surgery, University General Hospital of Alexandroupolis, Democritus University of Thrace Medical School, Dragana, 68100 Alexandroupolis, Greece; (C.T.); (M.P.); (C.S.)
- Correspondence: ; Tel.: +30-6986423707
| | - Christos Tsalikidis
- Second Department of Surgery, University General Hospital of Alexandroupolis, Democritus University of Thrace Medical School, Dragana, 68100 Alexandroupolis, Greece; (C.T.); (M.P.); (C.S.)
| | - Michail Pitiakoudis
- Second Department of Surgery, University General Hospital of Alexandroupolis, Democritus University of Thrace Medical School, Dragana, 68100 Alexandroupolis, Greece; (C.T.); (M.P.); (C.S.)
| | - Constantinos Simopoulos
- Second Department of Surgery, University General Hospital of Alexandroupolis, Democritus University of Thrace Medical School, Dragana, 68100 Alexandroupolis, Greece; (C.T.); (M.P.); (C.S.)
| | - Alexandra K. Tsaroucha
- Laboratory of Experimental Surgery & Surgical Research, Democritus University of Thrace Medical School, Dragana, 68100 Alexandroupolis, Greece;
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Papachristou F, Anninou N, Koukoulis G, Paraskakis S, Sertaridou E, Tsalikidis C, Pitiakoudis M, Simopoulos C, Tsaroucha A. Differential effects of cisplatin combined with the flavonoid apigenin on HepG2, Hep3B, and Huh7 liver cancer cell lines. Mutat Res 2021; 866:503352. [PMID: 33985696 DOI: 10.1016/j.mrgentox.2021.503352] [Citation(s) in RCA: 9] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 03/16/2021] [Accepted: 03/22/2021] [Indexed: 02/07/2023]
Abstract
The potential of apigenin (APG) to enhance cisplatin's (CDDP) chemotherapeutic efficacy was investigated in HepG2, Hep3B, and Huh7 liver cancer cell lines. The presence of 20 μM APG sensitized all cell lines to CDDP treatment (degree of sensitization based on the MTT assay: HepG2>Huh7>Hep3B). As reflected by sister chromatid exchange levels, the degree of genetic instability as well as DNA repair by homologous recombination differed among cell lines. CDDP and 20 μM APG cotreatment exhibited a synergistic genotoxic effect on Hep3B cells and a less than additive effect on HepG2 and Huh7 cells. Cell cycle delays were noticed during the first mitotic division in Hep3B and Huh7 cells and the second mitotic division in HepG2 cells. CDDP and CDDP + APG treatments reduced the clonogenic capacity of all cell lines; however, there was a discordance in drug sensitivity compared with the MMT assay. Furthermore, a senescence-like phenotype was induced, especially in Hep3B and Huh7 cells. Unlike CDDP monotherapy, the combined treatment exhibited a significant anti-invasive and anti-migratory action in all cancer cell lines. The fact that the three liver cancer cell lines responded differently, yet positively, to CDDP + APG cotreatment could be attributed to variations they present in gene expression. Complex mechanisms seem to influence cellular responses and cell fate.
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Affiliation(s)
- Fotini Papachristou
- Laboratory of Experimental Surgery and Surgical Research, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, 68 100, Greece; Postgraduate Program in Hepatobiliary and Pancreatic Surgery, 2nd Department of Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, 68 100, Greece.
| | - Nikolia Anninou
- Laboratory of Experimental Surgery and Surgical Research, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, 68 100, Greece
| | - Georgios Koukoulis
- Postgraduate Program in Hepatobiliary and Pancreatic Surgery, 2nd Department of Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, 68 100, Greece
| | - Stefanos Paraskakis
- Postgraduate Program in Hepatobiliary and Pancreatic Surgery, 2nd Department of Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, 68 100, Greece
| | - Eleni Sertaridou
- Postgraduate Program in Hepatobiliary and Pancreatic Surgery, 2nd Department of Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, 68 100, Greece
| | - Christos Tsalikidis
- Postgraduate Program in Hepatobiliary and Pancreatic Surgery, 2nd Department of Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, 68 100, Greece
| | - Michael Pitiakoudis
- Postgraduate Program in Hepatobiliary and Pancreatic Surgery, 2nd Department of Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, 68 100, Greece
| | - Constantinos Simopoulos
- Laboratory of Experimental Surgery and Surgical Research, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, 68 100, Greece; Postgraduate Program in Hepatobiliary and Pancreatic Surgery, 2nd Department of Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, 68 100, Greece
| | - Alexandra Tsaroucha
- Laboratory of Experimental Surgery and Surgical Research, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, 68 100, Greece; Postgraduate Program in Hepatobiliary and Pancreatic Surgery, 2nd Department of Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, 68 100, Greece
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Tsaroucha A, Kaldis V, Vailas M, Schizas D, Lambropoulou M, Papalois A, Tsigalou C, Gaitanidis A, Pitiakoudis M, Simopoulos C. The positive effect of eugenol on acute pancreatic tissue injury: a rat experimental model. Pan Afr Med J 2021; 38:132. [PMID: 33912302 PMCID: PMC8052617 DOI: 10.11604/pamj.2021.38.132.20202] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 01/20/2021] [Indexed: 11/18/2022] Open
Abstract
Introduction we present a rat experimental model used to evaluate the possible reduction in the extent of pancreatic tissue injury in acute pancreatitis cases, after administration of eugenol. Methods one hundred and twenty Wistar rats were used, which were randomly assigned in 3 groups: sham (n=20), control (n=50) and eugenol (n=50). Acute pancreatitis was induced by biliopancreatic ligation in the control and eugenol groups, but not in the Sham group. In the eugenol group, eugenol was administered per-os. Five histopathological parameters, such as edema, inflammatory infiltration, duct dilatation, hemorrhage and acinar necrosis were evaluated. Results at 72 h from acute pancreatitis induction, the total histological score was diminished in the eugenol group (p<0.0005) and duct dilatation and inflammatory infiltration were reduced compared to the control group (p<0.05). In addition, at 72 h, eugenol reduced pancreatic myeloperoxidase activity (p<0.0005). Conclusion eugenol, a highly free radical scavenger agent, may have a preventive role in acute pancreatic injury, as it was evident in our rat experimental model.
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Affiliation(s)
- Alexandra Tsaroucha
- Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece.,2nd Department of Surgery and Laboratory of Experimental Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Vasileios Kaldis
- Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Michail Vailas
- Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece.,First Department of Surgery, National and Kapodistrian University of Athens, Athens, Greece
| | - Dimitrios Schizas
- Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece.,First Department of Surgery, National and Kapodistrian University of Athens, Athens, Greece
| | - Maria Lambropoulou
- Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece.,Laboratory of Histology-Embryology, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Apostolos Papalois
- Experimental-Research Department, ELPEN Pharmaceuticals, Pikermi, Attica, Greece
| | - Christina Tsigalou
- Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece.,Laboratory of Microbiology, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Apostolos Gaitanidis
- 2nd Department of Surgery and Laboratory of Experimental Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Michael Pitiakoudis
- Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece.,2nd Department of Surgery and Laboratory of Experimental Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Constantinos Simopoulos
- Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece.,2nd Department of Surgery and Laboratory of Experimental Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
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Ypsilantis P, Lambropoulou M, Anagnostopoulos K, Panidou-Tsoulou E, Ioannidis O, Totsi A, Pitiakoudis M, Simopoulos C. Effect of laparoscopic liver resection versus the open technique on hepatocyte regenerating activity in the rat. Surg Endosc 2020; 34:4812-4817. [PMID: 31741154 DOI: 10.1007/s00464-019-07257-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 07/02/2019] [Accepted: 11/11/2019] [Indexed: 12/22/2022]
Abstract
BACKGROUND Laparoscopic liver resection offers a safe and feasible option primarily for the excision of hepatic neoplasms. Timely recovery of liver volume is a key factor for improving prognosis and post-operative mortality of patients undergone liver resection. The aim of the present study was to compare liver regeneration after laparoscopic over open partial hepatectomy. METHODS Wistar rats were subjected to laparoscopic 70% hepatectomy (group LAP-HEP), open 70% hepatectomy (group HEP), sham operation (group Sham) or no intervention (group Control). At various timepoints following operation (1 h-2 weeks), the liver was excised to assess relative liver weight, thiobarbituric acid reactive substances (TBARS) levels, mitotic activity, tissue expression of Nuclear Factor-κB (NFκB), Intercellular Adhesion Molecule-1 (ICAM-1) and Vascular Cell Adhesion Molecule-1 (VCAM-1) and the histopathologic profile. RESULTS No differences were seen in relative liver weight between hepatectomy groups. Mitotic index was increased in all operative study groups, being higher in group LAP-HEP than in group HEP. TBARS levels were higher in group LAP-HEP compared to group HEP. NFκB and VCAM-1 tissue expression scores were increased in all operative study groups with VCAM-1 being higher in group HEP, while ICAM-1 was overexpressed only in hepatectomy groups. Mild histopathologic lesions were noted in hepatectomy groups with the histopathologic score being higher in group HEP (24 h). CONCLUSIONS Laparoscopic liver resection enhanced hepatocyte mitotic activity which was accompanied by mild oxidative stress and a less pronounced local inflammatory response and tissue injury to that of the open technique.
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Affiliation(s)
- Petros Ypsilantis
- Laboratory of Experimental Research and Surgical Research, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece.
| | - Maria Lambropoulou
- Laboratory of Histology and Embryology, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | | | - Eleni Panidou-Tsoulou
- Laboratory of Experimental Research and Surgical Research, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Orestis Ioannidis
- Laboratory of Experimental Research and Surgical Research, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Albion Totsi
- Laboratory of Experimental Research and Surgical Research, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Michael Pitiakoudis
- Laboratory of Experimental Research and Surgical Research, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Constantinos Simopoulos
- Laboratory of Experimental Research and Surgical Research, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
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Gavriilidis P, Wheeler J, Spinelli A, de'Angelis N, Simopoulos C, Di Saverio S. Robotic vs laparoscopic total mesorectal excision for rectal cancers: has a paradigm change occurred? A systematic review by updated meta-analysis. Colorectal Dis 2020; 22:1506-1517. [PMID: 32333491 DOI: 10.1111/codi.15084] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [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: 07/24/2019] [Accepted: 03/05/2020] [Indexed: 12/30/2022]
Abstract
AIM The debate about the oncological adequacy, safety and efficiency of robotic vs laparoscopic total mesorectal excision for rectal cancers continues. Therefore, an updated, traditional and cumulative meta-analysis was performed with the aim of assessing the new evidence on this topic. METHOD A systematic search of the literature for data pertaining to the last 25 years was performed. Fixed- and random-effects models were used to cumulatively assess the accumulation of evidence over time. RESULTS Patients with a significantly higher body mass index (BMI), tumours located approximately 1 cm further distally and more patients undergoing neoadjuvant therapy were included in the robotic total mesorectal excision (RTME) cohort compared with those in the laparoscopic total mesorectal excision (LTME) cohort [RTME, mean difference (MD) = 0.22 (0.07, 0.36), P = 0.005; LTME, MD = -0.97 (-1.57, 0.36), P < 0.002; OR = 1.47 (1.11, 1.93), P = 0.006]. Significantly lower conversion rates to open surgery were observed in the RTME cohort than in the LTME cohort [OR = 0.33 (0.24, 0.46), P < 0.001]. Operative time in the LTME cohort was significantly reduced (by 50 min) compared with the RTME cohort. Subgroup analysis of the three randomized controlled trials (RCTs) challenged all the significant results of the main analysis and demonstrated nonsignificant differences between the RTME cohort and LTME cohort. CONCLUSION Although the RTME cohort included patients with a significantly higher BMI, more distal tumours and more patients undergoing neoadjuvant therapy, this cohort demonstrated lower conversion rates to open surgery when compared with the LTME cohort. However, subgroup analysis of the RCTs demonstrated nonsignificant differences between the two procedures.
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Affiliation(s)
- P Gavriilidis
- Division of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Imperial College Healthcare NHS Trust, Hammersmith Hospital, London, UK
| | - J Wheeler
- Colorectal Surgery Unit, Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge, UK
| | - A Spinelli
- Department of Biomedical Sciences, Humanitas University, Rozzano Milano, Italy.,Division of Colon and Rectal Surgery, Humanitas Clinical and Research Center IRCCS, Rozzano Milano, Italy
| | - N de'Angelis
- Department of Digestive Surgery, AP-HP, University Hospital Henri Mondor, Créteil, France.,University Paris Est, Créteil, France
| | - C Simopoulos
- 2nd Department of Surgery, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - S Di Saverio
- Colorectal Surgery Unit, Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge, UK.,Department of General Surgery, ASST Sette Laghi, University of Insubria, University Hospital of Varese, Regione Lombardia, Italy
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Tsaroucha AK, Korovesis GN, Valsami G, Lambropoulou M, Kollaras V, Anagnostopoulos C, Kostomitsopoulos N, Zerbini E, Simopoulos C. Silibinin-hydroxypropyl-β-cyclodextrin (SLB-HP-β-CD) complex prevents apoptosis in liver and kidney after hepatic ischemia-reperfusion injury. Food Chem Toxicol 2020; 145:111731. [PMID: 32891719 DOI: 10.1016/j.fct.2020.111731] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 07/05/2020] [Accepted: 08/30/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND We investigated the protective effect of silibinin on rat liver and kidney after hepatic inschemia/reperfusion (I/R) injury. METHODS AND MATERIALS Sixty three male Wistar-type rats (median age 13 weeks; average weight 314 g) were subjected to I/R injury of the liver. They were randomly divided into three groups: Sham (n = 7), Control (C, n = 28) and Silibinin (Si, n = 28). The last group received intravenously silibinin. The C and Si groups were each subdivided in four subgroups according to euthanasia times (i.e., 60, 120, 180, 240 min). We assessed expression of caspase-3 and TUNEL assay, and biochemical and histological parameters. RESULTS At 240 min, expression of caspase-3 and TUNEL assay were statistically significantly lower in the Si compared to the C group for both liver and kidney. SGOT and SGPT were also statistically significantly lower in the Si than in the C group at all time points. Histological parameters of the liver were also improved in the Si group. CONCLUSION Silibinin was found to exhibit a protective effect on liver and kidney after hepatic I/R injury. The present results are encouraging for further studies and future clinical application.
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Affiliation(s)
- Alexandra K Tsaroucha
- Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece; 2nd Department of Surgery and Laboratory of Experimental Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece; Department of Experimental Surgery, Bioresearch Foundation of the Academy of Athens, Athens, Greece.
| | - Georgios N Korovesis
- Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Georgia Valsami
- School of Health Sciences, Department of Pharmacy, National and Kapodistrian University of Athens, Greece
| | - Maria Lambropoulou
- Laboratory of Histology-Embryology, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Vasileios Kollaras
- Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | | | | | - Eleni Zerbini
- Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Constantinos Simopoulos
- Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece; Department of Experimental Surgery, Bioresearch Foundation of the Academy of Athens, Athens, Greece
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Kantartzi K, Passadakis P, Polychronidis A, Perente S, Vargemezis V, Simopoulos C. Prolene Hernia System: An Innovative Method for Hernia Repair in Patients on Peritoneal Dialysis. Perit Dial Int 2020. [DOI: 10.1177/089686080502500316] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- K. Kantartzi
- Nephrology Department Democritus University of Thrace Alexandroupolis, Greece
| | - P. Passadakis
- Nephrology Department Democritus University of Thrace Alexandroupolis, Greece
| | - A. Polychronidis
- Second Department of Surgery Democritus University of Thrace Alexandroupolis, Greece
| | - S. Perente
- Second Department of Surgery Democritus University of Thrace Alexandroupolis, Greece
| | - V. Vargemezis
- Nephrology Department Democritus University of Thrace Alexandroupolis, Greece
| | - C. Simopoulos
- Second Department of Surgery Democritus University of Thrace Alexandroupolis, Greece
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9
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Charalabopoulos A, Davakis S, Lambropoulou M, Papalois A, Simopoulos C, Tsaroucha A. Apigenin Exerts Anti-inflammatory Effects in an Experimental Model of Acute Pancreatitis by Down-regulating TNF-α. In Vivo 2019; 33:1133-1141. [PMID: 31280202 DOI: 10.21873/invivo.11583] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [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: 04/20/2019] [Revised: 06/06/2019] [Accepted: 06/10/2019] [Indexed: 12/17/2022]
Abstract
BACKGROUND/AIM This study investigated the anti-inflammatory effect of apigenin in an experimental model of acute pancreatitis. Inflammatory response was reflected by tissue expression of the cytokine TNF-α coupled with histological examination. MATERIALS AND METHODS Wistar rats were divided into three groups: Sham-group animals underwent laparotomy only, without any other interventions. Control-group animals underwent laparotomy and bilio-pancreatic duct ligation to induce pancreatitis without apigenin administration. Apigenin group animals were further treated with apigenin. Euthanasia was performed at 6, 12, 24, 48 and 72 h post-operatively. RESULTS Over-expression of TNF-α in relation to postoperative time was observed in the control group (p<0.001). In the apigenin group, under-expression of TNF-α in relation to postoperative time was observed (p<0.013). At 72 h, apigenin reduced pancreatic TNF-α expression and prevented pancreatic necrosis. CONCLUSION Apigenin slows progression and reduces severity of acute pancreatitis. Apigenin may serve as an adjunct to a more successful therapeutic strategy in acute pancreatitis.
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Affiliation(s)
- Alexandros Charalabopoulos
- Department of Upper Gastrointestinal and General Surgery, Broomfield Hospital, Mid Essex Hospital Services NHS Trust, Essex, U.K.,Experimental-Research Center, ELPEN Pharmaceuticals, Athens, Greece
| | - Spyridon Davakis
- Department of Upper Gastrointestinal and General Surgery, Broomfield Hospital, Mid Essex Hospital Services NHS Trust, Essex, U.K. .,First Department of Surgery, Laiko General Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Maria Lambropoulou
- Department of Histopathology, Faculty of Medicine, Democritus University of Thrace, Alexandroupoli, Greece
| | | | - Constantinos Simopoulos
- Laboratory of Experimental Surgery and Surgical Research, Faculty of Medicine, Democritus University of Thrace, Alexandroupoli, Greece
| | - Alexandra Tsaroucha
- Laboratory of Experimental Surgery and Surgical Research, Faculty of Medicine, Democritus University of Thrace, Alexandroupoli, Greece
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Ypsilantis P, Meditskou S, Lambropoulou M, Papamitsou T, Simopoulos C. Spontaneous pancreatic undifferentiated pleomorphic sarcoma in a laboratory rat: A case report. Animal Model Exp Med 2019; 2:222-225. [PMID: 31773099 PMCID: PMC6762044 DOI: 10.1002/ame2.12078] [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: 05/31/2019] [Revised: 07/17/2019] [Accepted: 07/31/2019] [Indexed: 11/26/2022] Open
Abstract
We present a case of spontaneous undifferentiated/unclassified sarcoma, of a pleomorphic subtype formerly known as malignant fibrous histiocytoma (UPS/MFH), arising from the pancreas of a laboratory rat. The mass was excised after laparotomy from a 6-month-old female laboratory Wistar rat. It presented a giant multilobulated mass of irregular shape, which had arisen from the pancreas and occupied almost the entire peritoneal cavity. Histologically the tumor was characterized by a highly variable morphological pattern, with frequent transitions from storiform to pleomorphic areas. An extensive immunohistochemical examination revealed no specific lines of differentiation. Immunohistochemical positivity was observed only to MIB-1 (high Ki-67 proliferation index), vimentin and CD68 antibodies. The diagnosis was compatible with UPS/MFH. To the best of our knowledge, the present case is the first report of a spontaneous primary UPS/MFH arising from the pancreas of a laboratory rat.
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Affiliation(s)
- Petros Ypsilantis
- Laboratory of Experimental Surgery and Surgical ResearchSchool of MedicineDemocritus University of ThraceAlexandroupolisGreece
| | - Soultana Meditskou
- Laboratory of Histology and EmbryologyAristotle University of ThessalonikiThessalonikiGreece
| | - Maria Lambropoulou
- Laboratory of Histology and EmbryologySchool of MedicineDemocritus University of ThraceAlexandroupolisGreece
| | - Theodora Papamitsou
- Laboratory of Histology and EmbryologyAristotle University of ThessalonikiThessalonikiGreece
| | - Constantinos Simopoulos
- Laboratory of Experimental Surgery and Surgical ResearchSchool of MedicineDemocritus University of ThraceAlexandroupolisGreece
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Gavriilidis P, Katsanos K, Sutcliffe RP, Simopoulos C, Azoulay D, Roberts KJ. Simultaneous, Delayed and Liver-First Hepatic Resections for Synchronous Colorectal Liver Metastases: A Systematic Review and Network Meta-Analysis. J Clin Med Res 2019; 11:572-582. [PMID: 31413769 PMCID: PMC6681858 DOI: 10.14740/jocmr3887] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Accepted: 06/17/2019] [Indexed: 12/22/2022] Open
Abstract
Background Systematic reviews and meta-analyses that compare simultaneous, delayed and liver-first approach for synchronous colorectal liver metastases have found no significant differences. The aim of this study was to determine the best treatment strategy on the basis of effect sizes and the probabilities of treatment ranking by using a network meta-analysis. Moreover, first-time pairwise and network meta-analyses were used to estimate the existing evidence, and their results were compared to detect any discrepancies between them. Methods Systematic review, pairwise meta-analysis and network meta-analysis were performed. The primary and secondary outcomes were 5-year overall survival and postoperative major morbidity, respectively. Results No significant differences in long-term survival and major morbidity were found amongst the three approaches. The hazard ratios (95% confidence interval) for 5-year overall survival for the simultaneous, delayed and liver-first approaches were 0.93 (0.69 - 1.24, P = 0.613), 0.97 (0.87 - 1.07, P = 0.596) and 0.90 (0.67 - 1.22, P = 0.499), respectively. Moreover, the liver-first approach with a surface under the cumulative ranking area score of 89% was ranked as the potentially best treatment option based on probabilities of treatment ranking. Conclusions On the basis of the relative ranking of treatments, the liver-first approach ranked first, followed by the delayed and simultaneous approaches. Therefore, a three-arm randomized controlled trial that compares the liver-first, simultaneous and delayed approaches needs to shed further light as to which is the best treatment option.
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Affiliation(s)
- Paschalis Gavriilidis
- Department of Hepato-Pancreato-Biliary and Liver Transplant Surgery, Queen Elizabeth University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TH, UK
| | - Konstantinos Katsanos
- Department of Interventional Radiology, Patras University Hospital, School of Medicine, Rion, 26504 Patras, Greece
| | - Robert P Sutcliffe
- Department of Hepato-Pancreato-Biliary and Liver Transplant Surgery, Queen Elizabeth University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TH, UK
| | - Constantinos Simopoulos
- The 2nd Department of Surgery, Medical School, Democritus University of Thrace, 68100 Alexandroupolis, Greece
| | - Daniel Azoulay
- Department of Hepato-Pancreato-Biliary and Liver Transplantation, Henri Mondor University Hospital, 94010 Creteil, France
| | - Keith J Roberts
- Department of Hepato-Pancreato-Biliary and Liver Transplant Surgery, Queen Elizabeth University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TH, UK
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Mantso T, Vasileiadis S, Lampri E, Botaitis S, Perente S, Simopoulos C, Chlichlia K, Pappa A, Panayiotidis MI. Hyperthermia Suppresses Post - In Vitro Proliferation and Tumor Growth in Murine Malignant Melanoma and Colon Carcinoma. Anticancer Res 2019; 39:2307-2315. [PMID: 31092422 DOI: 10.21873/anticanres.13347] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 04/17/2019] [Accepted: 04/18/2019] [Indexed: 11/10/2022]
Abstract
BACKGROUND Several studies have highlighted hyperthermia's ability to enhance the effectiveness of radiation and chemotherapy in various in vitro and in vivo cancer models. MATERIALS AND METHODS In vivo murine models of malignant melanoma and colon carcinoma were utilized for demonstrating hyperthermia's therapeutic effectiveness by examining levels of caspase 3, COX-2 and phospho-H2A.X (Ser139) as endpoints of apoptosis, proliferation and DNA damage respectively. RESULTS Hyperthermia induced in vitro cytotoxicity in malignant melanoma (B16-F10) and colon carcinoma (CT26) cell lines. In addition, it reduced post-in vitro proliferation and suppression of tumor growth by inducing the expression of caspase-3 and phospho-H2A.X (Ser139) while reducing the expression of COX-2 in both murine cancer models. CONCLUSION Hyperthermia can exert therapeutic effectiveness against melanoma and colon carcinoma by inhibiting a number of critical cellular cascades including apoptosis, proliferation and DNA damage.
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Affiliation(s)
- Theodora Mantso
- Department of Applied Sciences, Northumbria University, Newcastle Upon Tyne, U.K.,School of Life Sciences, Heriot Watt University, Edinburgh, U.K
| | - Stavros Vasileiadis
- Department of Obstetrics and Gynecology, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - Evangeli Lampri
- Department of Pathology, University of Ioannina, Ioannina, Greece
| | - Sotiris Botaitis
- First Department of Surgery, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - Sebachedin Perente
- First Department of Surgery, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - Constantinos Simopoulos
- Second Department of Surgery, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - Katerina Chlichlia
- Department of Molecular Biology and Genetics, Democritus University of Thrace, Alexandroupolis, Greece
| | - Aglaia Pappa
- Department of Molecular Biology and Genetics, Democritus University of Thrace, Alexandroupolis, Greece
| | - Mihalis I Panayiotidis
- Department of Applied Sciences, Northumbria University, Newcastle Upon Tyne, U.K. .,School of Life Sciences, Heriot Watt University, Edinburgh, U.K
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13
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Oikonomou P, Giatromanolaki A, Tsaroucha AK, Balaska K, Tsalikidis CH, Nikolaou CH, Pitiakoudis M, Simopoulos C. Expression of autophagy-related proteins Beclin-1 and LC3A and proliferation marker Ki-67 in calculous and acalculous human gallbladder epithelium. Hippokratia 2019; 23:64-69. [PMID: 32265586 PMCID: PMC7127918] [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: 06/11/2023]
Abstract
BACKGROUND Autophagy is an inducible intracellular process that has been studied mostly in cancer and less in inflammatory diseases. To establish the relation between cholecystitis (calculous and acalculous) and autophagy, we studied the expressions of immunohistochemical markers Beclin-1, LC3A, and Ki-67 in gallbladder epithelium and their significance in the induction of autophagy. METHODS Adult human gallbladder tissues were obtained from 100 patients (45 male, 55 female) who underwent cholecystectomy. According to the findings, the patients were divided into two groups: group A (calculous gallbladder: 24 male, 46 female; mean age 52.6 ± 16.0 years) and group B (acalculous gallbladder: 21 male, nine female; mean age 65.3 ± 12.4 years). The expressions of immunohistochemical markers Beclin-1, LC3A, and Ki-67 in gallbladder epithelium were studied using immunohistochemistry techniques. RESULTS Beclin-1 expression was correlated with LC3A expression in group A with increased Beclin-1 expression promoting LC3A expression (p =0.0001). In group B, the LC3A expression did not follow Beclin-1 expression (p =0.09). The mean percentage of Beclin-1 expression in group A patients was 23.8 % compared to group B patients, where the corresponding percentage was only 17.3 %. Corresponding mean percent expressions of LC3A in groups A and B were 38.9 % and 50.7 %, respectively. The expression of Ki-67 was higher in group A patients compared to group B patients. The mean percentage of Ki-67 expression in group A patients was 3.75 %, whereas, in group B patients, it was only 0.5 % (statistically significantly different; p =0.0003). CONCLUSION In the epithelium of calculous cholecystitis, overexpression of LC3A is related to Beclin-1 overexpression, which reinforces the view that Beclin-1 promotes autophagy in stone cholecystitis. HIPPOKRATIA 2019, 23(2): 64-69.
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Affiliation(s)
- P Oikonomou
- 2 Department of Surgery and Laboratory of Experimental Surgery & Surgical Research, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - A Giatromanolaki
- Department of Pathology, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - A K Tsaroucha
- 2 Department of Surgery and Laboratory of Experimental Surgery & Surgical Research, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - K Balaska
- Department of Pathology, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - C H Tsalikidis
- 2 Department of Surgery and Laboratory of Experimental Surgery & Surgical Research, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - C H Nikolaou
- 2 Department of Surgery and Laboratory of Experimental Surgery & Surgical Research, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - M Pitiakoudis
- 2 Department of Surgery and Laboratory of Experimental Surgery & Surgical Research, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - C Simopoulos
- 2 Department of Surgery and Laboratory of Experimental Surgery & Surgical Research, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
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14
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Symeonidis N, Lambropoulou M, Pavlidis E, Anagnostopoulos C, Tsaroucha A, Kotini A, Nikolaidou C, Kiziridou A, Simopoulos C. PAK1 Expression in Pancreatic Cancer: Clinicopathological Characteristics and Prognostic Significance. Clin Med Insights Oncol 2019; 13:1179554919831990. [PMID: 30799970 PMCID: PMC6379789 DOI: 10.1177/1179554919831990] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 10/10/2018] [Accepted: 01/17/2019] [Indexed: 12/15/2022]
Abstract
Background: Improvement of the management of pancreatic cancer requires a better
understanding of the genetic and molecular changes responsible for the
development of the disease. The family of p21-activated kinases (PAKs) and
especially PAK1 appears to mediate many cellular processes that contribute
to the development and progression of pancreatic cancer, but the clinical
relevance of PAK1 expression with the disease still remains unclear. Aim of
the study was to assess the clinical value and the potential prognostic
significance of PAK1 in pancreatic adenocarcinoma. Methods: We investigated the relationship between the PAK1 expression and the clinical
and histopathologic characteristics of pancreatic cancer patients and the
potential significance of PAK1 on survival. We examined tissue samples from
51 patients operated for pancreatic cancer. PAK1 expression was investigated
with immunohistochemistry and correlated to clinicopathological
parameters. Results: PAK1 was detected in all tumor samples and high expression was found in most
patients. High PAK1 expression was also associated with younger age and
well-differentiated tumors, but no association was found between PAK1
expression and Tumor-Node-Metastasis stage as well as deceased or alive
status on follow-up. Moderate to high PAK1 expression favored higher 6-month
and 1-year survival and low PAK1 expression 2-year survival but without
statistical significance. Conclusions Our results indicate that PAK1 could potentially be used as a prognostic
marker in pancreatic cancer. Further studies could clarify whether
utilization of PAK1 in therapeutic protocols for the treatment of pancreatic
cancer will render them more effective.
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Affiliation(s)
- Nikolaos Symeonidis
- Postgraduate Program in Hepatobiliary/Pancreatic Surgery, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece.,2nd Surgical Propedeutic Department, Hippokratio General Hospital, Thessaloniki, Greece
| | - Maria Lambropoulou
- Laboratory of Histology-Embryology, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Efstathios Pavlidis
- Postgraduate Program in Hepatobiliary/Pancreatic Surgery, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | | | - Alexandra Tsaroucha
- 2nd Department of Surgery and Laboratory of Experimental Surgery-Postgraduate Program in Hepatobiliary/Pancreatic Surgery, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Athanasia Kotini
- Laboratory of Medical Physics, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Christina Nikolaidou
- Laboratory of Histology-Embryology, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Anastasia Kiziridou
- Department of Pathology, Theagenio Anticancer Hospital, Thessaloniki, Greece
| | - Constantinos Simopoulos
- 2nd Department of Surgery and Laboratory of Experimental Surgery-Postgraduate Program in Hepatobiliary/Pancreatic Surgery, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
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15
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Chytoudis-Peroudis CC, Siskos N, Kalyviotis K, Fysekis I, Ypsilantis P, Simopoulos C, Skavdis G, Grigoriou ME. Spatial distribution of the full-length members of the Grg family during embryonic neurogenesis reveals a "Grg-mediated repression map" in the mouse telencephalon. PLoS One 2018; 13:e0209369. [PMID: 30571765 PMCID: PMC6301688 DOI: 10.1371/journal.pone.0209369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Accepted: 12/04/2018] [Indexed: 11/25/2022] Open
Abstract
The full-length members of the Groucho/Transducin-like Enhancer of split gene family, namely Grg1-4, encode nuclear corepressors that act either directly, via interaction with transcription factors, or indirectly by modifying histone acetylation or chromatin structure. In this work we describe a detailed expression analysis of Grg1-4 family members during embryonic neurogenesis in the developing murine telencephalon. Grg1-4 presented a unique, complex yet overlapping expression pattern; Grg1 and Grg3 were mainly detected in the proliferative zones of the telencephalon, Grg2 mainly in the subpallium and finally, Grg4 mainly in the subpallial post mitotic neurons. In addition, comparative analysis of the expression of Grg1-4 revealed that, at these stages, distinct telencephalic progenitor domains or structures are characterized by the presence of different combinations of Grg repressors, thus forming a “Grg-mediated repression map”.
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Affiliation(s)
| | - Nikistratos Siskos
- Department of Molecular Biology & Genetics, Democritus University of Thrace, Alexandroupolis, Greece
| | - Konstantinos Kalyviotis
- Department of Molecular Biology & Genetics, Democritus University of Thrace, Alexandroupolis, Greece
| | - Ioannis Fysekis
- Department of Molecular Biology & Genetics, Democritus University of Thrace, Alexandroupolis, Greece
| | - Petros Ypsilantis
- School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | | | - George Skavdis
- Department of Molecular Biology & Genetics, Democritus University of Thrace, Alexandroupolis, Greece
| | - Maria E. Grigoriou
- Department of Molecular Biology & Genetics, Democritus University of Thrace, Alexandroupolis, Greece
- * E-mail:
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16
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Gaitanidis A, Alevizakos M, Tsalikidis C, Tsaroucha A, Simopoulos C, Pitiakoudis M. Refusal of Cancer-Directed Surgery by Breast Cancer Patients: Risk Factors and Survival Outcomes. Clin Breast Cancer 2018; 18:e469-e476. [DOI: 10.1016/j.clbc.2017.07.010] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Revised: 07/12/2017] [Accepted: 07/13/2017] [Indexed: 11/13/2022]
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17
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Pavlidis ET, Lambropoulou M, Symeonidis NG, Anagnostopoulos C, Tsaroucha A, Kotini A, Nikolaidou C, Kiziridou A, Simopoulos C. The Immunohistochemical Expression MTA 1 Protein and its Prognostic Value in Pancreatic Cancer. J INVEST SURG 2018; 31:142-150. [PMID: 28635511 DOI: 10.1080/08941939.2017.1280565] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Purpose/aim: To examine with immunohistochemical assay MTA1 protein expression levels in pancreatic cancer tissues defining its prognostic value. MATERIAL AND METHODS The specimens derived from 51 patients who underwent surgery. The levels of MTA1 protein were compared with the age of the patients, their survival, and prognosis. Also, we studied clinical and histopathological factors such as the degree of tumor differentiation and its stage in correlation with MTA1 protein levels. In parallel, there was correlation between the expression of the ΜΤΑ1 protein and the aforementioned factors regarding survival rate. Furthermore, we independently correlated the patient's survival in relation to whether they had undergone adjuvant chemotherapy or not. RESULTS It has been found to be low, moderate, or high expression of MTA1 levels in 48 out of 51 cancer tissues. Specifically, 49.0% of patients had low expression, 33.3% moderate, and 11.8% high expression of MTA1. Regarding the expression of MTA1 protein in correlation with various clinical and histopathological factors, a statistically significant correlation was observed with the degree of differentiation (p = 0.0068) and with the stage of the disease (p = 0.0173), but not with survival (p = 0.0740) or the age of them (p = 0.1547). Finally, it was found that overexpression of the MTA1protein is a prognostic factor for shorter survival in patients with pancreatic cancer (average 4.67 ± 0.95 months). CONCLUSIONS MTA 1 protein may constitute an important prognostic marker in pancreatic cancer and could improve prognosis and treatment.
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Affiliation(s)
- Efstathios T Pavlidis
- c 2nd Department of Surgery and Laboratory of Experimental Surgery - Postgraduate Program in Hepatobiliary/Pancreatic Surgery, School of Medicine , Democritus University of Thrace , 68 100 Alexandroupolis , Greece
| | | | - Nikolaos G Symeonidis
- c 2nd Department of Surgery and Laboratory of Experimental Surgery - Postgraduate Program in Hepatobiliary/Pancreatic Surgery, School of Medicine , Democritus University of Thrace , 68 100 Alexandroupolis , Greece
| | | | - Alexandra Tsaroucha
- d Laboratories of Medical Physics, Department of Pathology , Theagenio Anticancer Hospital , Thessaloniki , Greece
| | - Athanasia Kotini
- d Laboratories of Medical Physics, Department of Pathology , Theagenio Anticancer Hospital , Thessaloniki , Greece
| | | | - Anastasia Kiziridou
- d Laboratories of Medical Physics, Department of Pathology , Theagenio Anticancer Hospital , Thessaloniki , Greece
| | - Constantinos Simopoulos
- c 2nd Department of Surgery and Laboratory of Experimental Surgery - Postgraduate Program in Hepatobiliary/Pancreatic Surgery, School of Medicine , Democritus University of Thrace , 68 100 Alexandroupolis , Greece
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18
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Gaitanidis A, Simopoulos C, Pitiakoudis M. What to consider when designing a laparoscopic colorectal training curriculum: a review of the literature. Tech Coloproctol 2018; 22:151-160. [PMID: 29512045 DOI: 10.1007/s10151-018-1760-y] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2017] [Accepted: 12/03/2017] [Indexed: 12/27/2022]
Abstract
Multiple studies have demonstrated the benefits of laparoscopic colorectal surgery (LCS), but in several countries it has still not been widely adopted. LCS training is associated with several challenges, such as patient safety concerns and a steep learning curve. Current evidence may facilitate designing of efficient training curricula to overcome these challenges. Basic training with virtual reality simulators has witnessed meteoric advances and may be essential during the early parts of the learning curve. Cadaveric and animal model training still constitutes an indispensable training tool, due to a higher degree of difficulty and greater resemblance to real operative conditions. In addition, recent evidence favors the use of novel training paradigms, such as proficiency-based training, case selection and modular training. This review summarizes the recent advances in LCS training and provides the evidence for designing an efficient training curriculum to overcome the challenges of LCS training.
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Affiliation(s)
- A Gaitanidis
- Second Department of Surgery, University General Hospital of Alexandroupoli, Democritus University of Thrace Medical School, 68100, Alexandroupoli, Greece.
| | - C Simopoulos
- Second Department of Surgery, University General Hospital of Alexandroupoli, Democritus University of Thrace Medical School, 68100, Alexandroupoli, Greece
| | - M Pitiakoudis
- Second Department of Surgery, University General Hospital of Alexandroupoli, Democritus University of Thrace Medical School, 68100, Alexandroupoli, Greece
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19
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Vordos N, Drosos G, Kazanidis I, Ververidis A, Ypsilantis P, Kazakos K, Simopoulos C, Mitropoulos AC, Touloupidis S. Hydroxyapatite Crystal Thickness and Buckling Phenomenon in Bone Nanostructure During Mechanical Tests. Ann Biomed Eng 2018; 46:627-639. [DOI: 10.1007/s10439-018-1983-0] [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] [Received: 05/04/2017] [Accepted: 01/12/2018] [Indexed: 12/22/2022]
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20
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Gaitanidis A, Alevizakos M, Tsaroucha A, Tsalikidis C, Simopoulos C, Pitiakoudis M. Conditional survival analysis for patients with intraductal papillary mucinous neoplasms (IPMNs) undergoing curative resection. Eur J Surg Oncol 2018; 44:693-699. [PMID: 29426780 DOI: 10.1016/j.ejso.2018.01.011] [Citation(s) in RCA: 3] [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] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 11/13/2017] [Accepted: 01/05/2018] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Conditional survival (CS) analysis represents a novel method that may provide more clinically relevant perspectives to cancer management compared to conventional survival analysis. The purpose of this study was to evaluate conditional survival for patients with intraductal papillary mucinous neoplasms (IPMNs) undergoing curative resection. METHODS A retrospective search of the Surveillance Epidemiology and End Results (SEER) database was performed. Three-year conditional survival (i.e. probability that a patient will survive an additional 3 years if they have already survived x years) was calculated using the formula 3-CS(x)=OS(x+3)/OS(x), where OS represents overall survival. RESULTS Overall, 1303 patients were identified, with mean age of 65.2 ± 12.2 years. 3-CS at 1, 3 and 5 years after diagnosis was 35.8%, 47.5% and 44.7%. Patients with stage III/IV disease demonstrated small differences in 3-CS at 1-3 years after diagnosis compared to patients with stage I/II disease (I/II: 35.1%-46.9%, III/IV: 22.1%-42.3%, d range 0.09-0.28), while their 3-CS was superior at 4-5 years after diagnosis (I/II: 41.5%-45.7%, III/IV: 57.9%-64.7%, d range 0.24-0.47). Differences in 3-CS based on tumor grade displayed a different pattern, with small differences at 1-3 years after diagnosis (well-differentiated (WD)/moderately-differentiated (MD): 34.6%-50%, poorly-differentiated (PD)/undifferentiated (UD): 23.2%-40%, d range 0.18-0.24), before becoming prominent at 4-5 years after diagnosis (WD/MD: 50%-51.7%, PD/UD: 24.1%-30%, d range 0.4-0.55). CONCLUSIONS Conditional survival for patients with IPMNs undergoing resection improves over time, especially for patients with high-risk features. This information may be used to provide individualized approaches to surveillance and treatment.
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Affiliation(s)
- Apostolos Gaitanidis
- Second Department of Surgery, Democritus University of Thrace Medical School, Alexandroupoli, Greece.
| | - Michail Alevizakos
- University of Pittsburgh Medical Center, Department of Medicine, Pittsburgh, PA, USA
| | - Alexandra Tsaroucha
- Second Department of Surgery, Democritus University of Thrace Medical School, Alexandroupoli, Greece
| | - Christos Tsalikidis
- Second Department of Surgery, Democritus University of Thrace Medical School, Alexandroupoli, Greece
| | - Constantinos Simopoulos
- Second Department of Surgery, Democritus University of Thrace Medical School, Alexandroupoli, Greece
| | - Michail Pitiakoudis
- Second Department of Surgery, Democritus University of Thrace Medical School, Alexandroupoli, Greece
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21
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Ypsilantis P, Lambropoulou M, Milicevic M, Bulajic P, Karayiannakis A, Zacharoulis D, Simopoulos C. Microscopic assessment of the tissue-sparing potential of radiofrequency-assisted liver resection techniques in a porcine model. J Hepatobiliary Pancreat Sci 2017; 24:657-666. [PMID: 29032589 DOI: 10.1002/jhbp.513] [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] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND The aim of the present study was to microscopically assess the tissue-sparing potential of contemporary radiofrequency-assisted liver resection (RF-LR) techniques. METHODS Twenty-four pigs were subjected to either (1) partial hepatectomy (PH) using the sequential-coagulate-cut (SCC) technique (group SCC, n = 6) using a monopolar electrode, the technique using the bipolar electrode Habib-4X (group H, n = 6) or the "crush-clamp" technique (group CC, n = 6); or (2) sham operation (group Sham, n = 6). At 48 h post-operation, liver parenchyma proximal to the ablation rim was excised for histopathologic examination and immunohistochemical assessment of apoptosis (antibody M30) and inflammatory response (antibodies IL-6, TNFα and NFκB). RESULTS Histopathologic index increased from the 1st to the 4th , the 1st to the 2nd or only the 1st cm from the inner margin of the ablation rim in group SCC, H or CC, respectively. The index was higher in group SCC compared to the other groups. Tissue expression of M30, IL-6, TNFα and NFκB increased in all PH groups, being higher and more expanded in group SCC, H, SCC and SCC, respectively. CONCLUSIONS RF-LR techniques had variable microscopically assessed tissue-sparing effect. The Habib-4X proved to be less injurious compared to the SCC Belgrade technique regarding the severity and extent of tissue damage proximal to the ablation rim.
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Affiliation(s)
- Petros Ypsilantis
- Laboratory of Experimental Surgery and Surgical Research, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Maria Lambropoulou
- Laboratory of Histology and Embryology, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Miroslav Milicevic
- First Surgical Clinic, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Predrag Bulajic
- First Surgical Clinic, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Anastasios Karayiannakis
- Laboratory of Experimental Surgery and Surgical Research, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Dimitrios Zacharoulis
- Clinic of Surgery, School of Medicine, University of Thessaly, University Hospital of Larissa, Larissa, Greece
| | - Constantinos Simopoulos
- Laboratory of Experimental Surgery and Surgical Research, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
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22
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Ypsilantis P, Lambropoulou M, Karayiannakis A, Milicevic M, Bulajic P, Zacharoulis D, Sioka E, Simopoulos C. Tissue injury of the remnant liver following radiofrequency-assisted partial hepatectomy. J BUON 2017; 22:1172-1179. [PMID: 29135099] [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
PURPOSE To evaluate remnant liver tissue damage in a pig model of radiofrequency (RF)-assisted liver resection employing either the sequential coagulate cut (SCC) Belgrade technique using a monopolar RF electrode or the one using the bipolar Habib-4x device. METHODS Sixteen pigs underwent either a) resection of part of the left lateral and left median hepatic lobes employing the SCC (SCC group), the Habib-4X (H group) or the "crushclamp" technique (CC group) or b) sham operation (Sham group). Forty-eight hours later, tissue specimens were excised from the right lateral hepatic lobe for histopathological examination and immunohistochemical assessment of tissue injury, mitosis and inflammation. RESULTS Histopathologic lesions, apoptotic activity, HSP 40 and TNFα expression were more intense, while mitotic activity was less prominent in the SCC group technique compared to H group. Comparison between CC and H groups suggested the pivotal role of partial hepatectomy (PH) per se in the changes noted in H group. CONCLUSION The Habib-4X liver resection technique proved to be less injurious in the remnant liver tissue after PH compared to the SCC technique.
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Affiliation(s)
- Petros Ypsilantis
- Laboratory of Experimental Surgery and Surgical Research, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
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23
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Abstract
Timely and accurate diagnosis of pregnancy in the laboratory rat is an invaluable endpoint in embryological and reproductive toxicology studies. The purpose of the present study was to assess the feasibility, sensitivity, accuracy and safety of laparoscopic examination of the uterus for detecting pregnancy at an early stage, and defining the number of fetuses in surviving rat models. Female Wistar rats were subjected to a two-port laparoscopic examination of their uterus from day 6 to day 10 post-coitum (pc). Mean recovery time from anesthesia was 148 ± 66 s. A postoperative 4.0 ± 1.8% body weight loss was restored in 3.9 ± 1.3 days. Uterine bulges suggestive of underlying embryonic vesicles could be detected by day 7 pc with a 0% false-negative diagnosis. Comparison of the number of laparoscopically defined uterine bulges (fetal counts) with litter size revealed a 0% underestimation rate of fetal counts, and a 42.9–87.5% overestimation rate from day 7 to day 10 pc. In conclusion, the present study introduced the laparoscopic examination of the uterus and showed it to be a feasible, reliable and safe method of early pregnancy diagnosis in the laboratory rat by day 7 pc.
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Affiliation(s)
- Petros Ypsilantis
- Laboratory of Experimental Surgery and Surgical Research, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Paraskevi Somalou
- Laboratory of Experimental Surgery and Surgical Research, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Eleni Panidou
- Laboratory of Experimental Surgery and Surgical Research, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Constantinos Simopoulos
- Laboratory of Experimental Surgery and Surgical Research, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
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Santarmaki V, Kourkoutas Y, Zoumpopoulou G, Mavrogonatou E, Kiourtzidis M, Chorianopoulos N, Tassou C, Tsakalidou E, Simopoulos C, Ypsilantis P. Survival, Intestinal Mucosa Adhesion, and Immunomodulatory Potential of Lactobacillus plantarum Strains. Curr Microbiol 2017. [PMID: 28634689 DOI: 10.1007/s00284-017-1285-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Survival during transit through the gastrointestinal track, intestinal mucosa adhesion, and a potential immunomodulatory effect of Lactobacillus plantarum strains 2035 and ACA-DC 2640 were investigated in a rat model. According to microbiological and multiplex PCR analysis, both strains were detected in feces 24 h after either single-dose or daily administration for 7 days. Intestinal mucosa adhesion of L. plantarum 2035 was noted in the large intestine at 24 h after single-dose administration, while it was not detected at 48 h. Daily dosing, prolonged detection of the strain up to 48 h post-administration, and expanded adhesion to the small intestine. Adhesion of L. plantarum ACA-DC 2640 to the intestinal mucosa after single-dose administration was prolonged and more extended compared to L. plantarum 2035. Daily dosing increased both the levels and the rate of positive cultures of the strains compared to those of the single-dose scheme. In addition, both strains increased total IgG while decreased IgM and IgA serum levels. In conclusion, L. plantarum 2035 and L. plantarum ACA-DC 2640 survived transit through the gastrointestinal track, exhibited transient distinct adhesion to the intestinal mucosa and modulated the systemic immune response.
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Affiliation(s)
- Valentini Santarmaki
- Laboratory of Applied Microbiology & Biotechnology, Department of Molecular Biology & Genetics, Democritus University of Thrace, 68100, Alexandroupolis, Greece
| | - Yiannis Kourkoutas
- Laboratory of Applied Microbiology & Biotechnology, Department of Molecular Biology & Genetics, Democritus University of Thrace, 68100, Alexandroupolis, Greece
| | - Georgia Zoumpopoulou
- Laboratory of Dairy Research, Department of Food Science and Human Nutrition, Agricultural University of Athens, 11855, Athens, Greece
| | - Eleni Mavrogonatou
- Laboratory of Cell Proliferation and Ageing, Institute of Biosciences and Applications, National Centre for Scientific Research Demokritos, 15310, Athens, Greece
| | - Mikis Kiourtzidis
- Laboratory of Applied Microbiology & Biotechnology, Department of Molecular Biology & Genetics, Democritus University of Thrace, 68100, Alexandroupolis, Greece
| | - Nikos Chorianopoulos
- Institute of Technology of Agricultural Products, Hellenic Agricultural Organization DEMETER, 1 S. Venizelou Str, Lykovrissi, 14123, Athens, Greece
| | - Chrysoula Tassou
- Institute of Technology of Agricultural Products, Hellenic Agricultural Organization DEMETER, 1 S. Venizelou Str, Lykovrissi, 14123, Athens, Greece
| | - Effie Tsakalidou
- Laboratory of Dairy Research, Department of Food Science and Human Nutrition, Agricultural University of Athens, 11855, Athens, Greece
| | - Constantinos Simopoulos
- Laboratory of Experimental Surgery and Surgical Research, School of Medicine, Democritus University of Thrace, 68100, Alexandroupolis, Greece
| | - Petros Ypsilantis
- Laboratory of Experimental Surgery and Surgical Research, School of Medicine, Democritus University of Thrace, 68100, Alexandroupolis, Greece. .,University General Hospital of Alexandroupolis, Dragana, 68100, Alexandroupolis, Greece.
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Saxami G, Karapetsas A, Chondrou P, Vasiliadis S, Lamprianidou E, Kotsianidis I, Ypsilantis P, Botaitis S, Simopoulos C, Galanis A. Potentially probiotic Lactobacillus strains with anti-proliferative activity induce cytokine/chemokine production and neutrophil recruitment in mice. Benef Microbes 2017; 8:615-623. [PMID: 28618861 DOI: 10.3920/bm2016.0202] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Lactobacillus pentosus B281 and Lactobacillus plantarum B282 are two Lactobacillus strains previously isolated from fermented table olives. Both strains were found to possess probiotic properties and displayed desirable technological characteristics for application as starters in novel functional food production. In the present study the anti-proliferative and immunostimulatory activities of the two strains were investigated. Firstly, we demonstrated that live L. pentosus B281 and L. plantarum B282 significantly inhibited the growth of human colon cancer cells (Caco-2) in a time- and dose-dependent manner. By employing the air pouch system in mice, we showed that administration of both strains led to a rapid and statistically significant infiltration of leukocytes in the air pouch exudates. The phenotypical characterisation of the recruited immune cells was performed by flow cytometry analysis. We demonstrated that the majority of the infiltrated leukocytes were neutrophils. Finally by using the Mouse Cytokine Array Panel A Detection Antibody cocktail, we showed that both strains induced the expression of granulocyte-colony stimulating factor, interleukin (IL)-1α, IL-1β, IL-6, chemokine (C-X-C motif) ligand (CXCL)-1, chemokine (C-C motif) ligand (CCL)-3, CCL-4, and CXCL-2 and diminished the expression levels of soluble intercellular adhesion molecule, macrophage colony-stimulating factor and metallopeptidase inhibitor 1. Our results showed that both strains display anti-proliferative and immunostimulatory properties equal or even better in some cases than those of established and commonly used probiotic strains. These findings further support the probiotic character of the two strains.
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Affiliation(s)
- G Saxami
- 1 Department of Molecular Biology and Genetics, Democritus University of Thrace, Alexandroupolis 68100, Greece
| | - A Karapetsas
- 1 Department of Molecular Biology and Genetics, Democritus University of Thrace, Alexandroupolis 68100, Greece
| | - P Chondrou
- 1 Department of Molecular Biology and Genetics, Democritus University of Thrace, Alexandroupolis 68100, Greece
| | - S Vasiliadis
- 1 Department of Molecular Biology and Genetics, Democritus University of Thrace, Alexandroupolis 68100, Greece
| | - E Lamprianidou
- 2 Department of Hematology, Medical School, Democritus University of Thrace, Alexandroupolis 68100, Greece
| | - I Kotsianidis
- 2 Department of Hematology, Medical School, Democritus University of Thrace, Alexandroupolis 68100, Greece
| | - P Ypsilantis
- 3 Laboratory of Experimental Surgery and Surgical Research, Medical School, Democritus University of Thrace, Alexandroupolis 68100, Greece
| | - S Botaitis
- 3 Laboratory of Experimental Surgery and Surgical Research, Medical School, Democritus University of Thrace, Alexandroupolis 68100, Greece
| | - C Simopoulos
- 3 Laboratory of Experimental Surgery and Surgical Research, Medical School, Democritus University of Thrace, Alexandroupolis 68100, Greece
| | - A Galanis
- 1 Department of Molecular Biology and Genetics, Democritus University of Thrace, Alexandroupolis 68100, Greece
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Memet I, Tsalkidou E, Tsaroucha AK, Lambropoulou M, Chatzaki E, Trypsianis G, Schizas D, Pitiakoudis M, Simopoulos C. Autotaxin Expression in Hepatocellular Carcinoma. J INVEST SURG 2017; 31:359-365. [PMID: 28598712 DOI: 10.1080/08941939.2017.1331280] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND Hepatocellular carcinoma (HCC) is one of the most common malignant tumors. Despite the important progress observed in liver surgery, the survival rates are discouraging. The aim of this study was to investigate the expression of autotaxin in hepatocellular carcinoma. MATERIALS AND METHODS Liver tissues from 28 human hepatocellular carcinomas were evaluated for the expression of autotaxin by immunohistochemistry. The gender, age, histological grade, lymphovascular invasion, number of tumors, levels of serum alpha-fetoprotein (aFP), presence of liver cirrhosis, hepatitis, surgery and survival rates were recorded. RESULTS Immunohistochemistry confirmed the expression of autotaxin in hepatocellular carcinoma. The histological grade seems to be the only independent predictor of stronger autotaxin expression, as significantly higher levels of autotaxin were detected in histological grades II and III. In addition, levels of autotaxin seem to be the most important independent prognostic factor related to poor survival. There was an eight-fold higher risk of death in patients with high levels of autotaxin compared to patients with low levels. CONCLUSIONS Autotaxin expression in hepatocellular carcinoma could be of great importance. High autotaxin expression in HCC is detected in patients with histological grade II and III. Further, patients with elevated expression levels were found to possess an eight-fold higher risk of death. Autotaxin role in HCC should be further elucidated.
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Affiliation(s)
- Ilker Memet
- a Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Faculty of Medicine , Democritus University of Thrace , Alexandroupolis , Greece.,b Democritus University of Thrace , Faculty of Medicine, Second Department of Surgery and Laboratory of Experimental Surgery , Dragana , Alexandroupolis , Greece
| | - Evanthia Tsalkidou
- a Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Faculty of Medicine , Democritus University of Thrace , Alexandroupolis , Greece.,b Democritus University of Thrace , Faculty of Medicine, Second Department of Surgery and Laboratory of Experimental Surgery , Dragana , Alexandroupolis , Greece
| | - Alexandra K Tsaroucha
- a Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Faculty of Medicine , Democritus University of Thrace , Alexandroupolis , Greece.,b Democritus University of Thrace , Faculty of Medicine, Second Department of Surgery and Laboratory of Experimental Surgery , Dragana , Alexandroupolis , Greece
| | - Maria Lambropoulou
- c Democritus University of Thrace , Faculty of Medicine, Laboratory of Histology-Embryology , Dragana , Alexandroupolis , Greece
| | - Ekaterini Chatzaki
- d Democritus University of Thrace , Faculty of Medicine, Laboratory of Pharmacology , Dragana , Alexandroupolis , Greece
| | - Gregory Trypsianis
- e Democritus University of Thrace , Faculty of Medicine, Laboratory of Medical Statistics , Dragana , Alexandroupolis , Greece
| | - Dimitrios Schizas
- f National and Kapodistrian University of Athens, Laikon Hospital , First Department of Surgery , Athens , Greece
| | - Michael Pitiakoudis
- a Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Faculty of Medicine , Democritus University of Thrace , Alexandroupolis , Greece.,b Democritus University of Thrace , Faculty of Medicine, Second Department of Surgery and Laboratory of Experimental Surgery , Dragana , Alexandroupolis , Greece
| | - Constantinos Simopoulos
- a Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Faculty of Medicine , Democritus University of Thrace , Alexandroupolis , Greece.,b Democritus University of Thrace , Faculty of Medicine, Second Department of Surgery and Laboratory of Experimental Surgery , Dragana , Alexandroupolis , Greece
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Mantso T, Sfakianos AP, Atkinson A, Anestopoulos I, Mitsiogianni M, Botaitis S, Perente S, Simopoulos C, Vasileiadis S, Franco R, Pappa A, Panayiotidis MI. Development of a Novel Experimental In Vitro Model of Isothiocyanate-induced Apoptosis in Human Malignant Melanoma Cells. Anticancer Res 2017; 36:6303-6309. [PMID: 27919950 DOI: 10.21873/anticanres.11226] [Citation(s) in RCA: 17] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 11/03/2016] [Accepted: 11/08/2016] [Indexed: 11/10/2022]
Abstract
BACKGROUND Isothiocyanates are constituents of cruciferous vegetables which have been associated with reduced cancer risk partially through their ability to induce apoptosis in malignant cells including melanoma. MATERIALS AND METHODS We have utilized human malignant melanoma (A375), epidermoid carcinoma (A431) and immortalized keratinocyte (HaCaT) cells exposed to various isothiocyanates, under different experimental conditions. RESULTS An experimental in vitro model utilizing low isothiocyanate concentrations (0.1-5 μM for 48 h with all treatments being refreshed after 24h) was shown to be (i) most efficient in exerting an anti-cancer effect when compared to higher concentrations (5-100 μM for 24 or 48 h added as a single bolus) and (ii) specific to A375 cells while A431 and HaCaT cells remained unaffected. Such effect involved the activation of several caspases including (iii) initiator caspases 8, 9, 4 (indicating the involvement of intrinsic, extrinsic and endoplasmic reticulum-based pathways) and (iv) effector caspases 3, 7 and 6. CONCLUSION Utilization of low isothiocyanate concentrations (under the conditions described herein) exerts an anti-cancer effect specific to human malignant melanoma cells thus providing a therapeutic basis for their utilization in management of the disease.
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Affiliation(s)
- Theodora Mantso
- School of Life Sciences, Heriot Watt University, Edinburgh, Scotland, U.K
| | | | - Aithne Atkinson
- School of Life Sciences, Heriot Watt University, Edinburgh, Scotland, U.K
| | - Ioannis Anestopoulos
- Department of Molecular & Cell Biology, Democritus University of Thrace, Alexandroupolis, Greece
| | - Melina Mitsiogianni
- Department of Applied Sciences, Northumbria University, Newcastle Upon Tyne, U.K
| | - Sotirios Botaitis
- Second Department of Surgery, Democritus University of Thrace, Alexandroupolis, Greece
| | - Sebachedin Perente
- Second Department of Surgery, Democritus University of Thrace, Alexandroupolis, Greece
| | | | - Stavros Vasileiadis
- Department of Molecular & Cell Biology, Democritus University of Thrace, Alexandroupolis, Greece
| | - Rodrigo Franco
- Redox Biology Centre, University of Nebraska, Lincoln, NE, U.S.A.,School of Veterinary Medicine & Biomedical Sciences, University of Nebraska, Lincoln, NE, U.S.A
| | - Aglaia Pappa
- Department of Molecular & Cell Biology, Democritus University of Thrace, Alexandroupolis, Greece
| | - Mihalis I Panayiotidis
- School of Life Sciences, Heriot Watt University, Edinburgh, Scotland, U.K. .,Department of Applied Sciences, Northumbria University, Newcastle Upon Tyne, U.K
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Tsaroucha AK, Tsiaousidou A, Ouzounidis N, Tsalkidou E, Lambropoulou M, Giakoustidis D, Chatzaki E, Simopoulos C. Intraperitoneal administration of apigenin in liver ischemia/reperfusion injury protective effects. Saudi J Gastroenterol 2016; 22:415-422. [PMID: 27976636 PMCID: PMC5184741 DOI: 10.4103/1319-3767.195556] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [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] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND/AIMS Hepatic injury caused by ischemia/reperfusion (I/R) is a clinical problem associated with major liver surgery. Among other flavonoids, apigenin has shown a promising effect on I/R cases. In this study, we have investigated the effects of apigenin after liver I/R injury in rats. MATERIALS AND METHODS Forty eight rats were randomized into the following eight groups: (1) Control-sham group: rats subjected to the surgical procedure, except for liver I/R; (2) DMSO group: rats subjected to surgery, except for liver I/R given the apigenin solvent dimethyl-sulfoxide intraperitoneally; (3) C60 group; (4) C120 group; (5) C240 group: rats underwent liver ischemia for 45 min followed by reperfusion for 60 min, 120 min, and 240 min; (6) AP60 group; (7) AP120 group; (8) AP240 group: rats underwent liver ischemia for 45 min, and then given apigenin (5 mg) intraperitoneally followed by reperfusion for 60 min, 120 min, and 240 min. Reverse transcription polymerase chain reaction was performed on liver tissues to measure BCL-2/BAX expression, enzyme-linked immunosorbent assay to measure M30/M65 and ICAM-1. Immunohistochemistry was used to identify M30 biomarker in liver tissues. STATISTICAL ANALYSIS Quantitative variables were tested by Kolmogorov-Smirnov test, repeated measures analysis of variance/Friedman test. Gene levels were assessed by Student's t-test/Mann-Whitney U-test. RESULTS BCL-2 levels were significantly higher in I/R apigenin groups than in I/R control groups. BAX levels were lower in the AP240 group than in C240 group. Prolongation of reperfusion resulted in increased activation of M30. ICAM-1 levels were lower in the AP240 group than in C240 group. CONCLUSIONS Apigenin seems to inhibit the process of apoptosis and ameliorate the hepatic I/R injury.
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Affiliation(s)
- Alexandra K. Tsaroucha
- Department of Surgery and Laboratory of Experimental Surgery, School of Medicine, Aristotle University of Thessaloniki, Konstantinoupoleos, Thessaloniki, Greece,Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Faculty of Medicine, Aristotle University of Thessaloniki, Konstantinoupoleos, Thessaloniki, Greece
| | - Anastasia Tsiaousidou
- Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Faculty of Medicine, Aristotle University of Thessaloniki, Konstantinoupoleos, Thessaloniki, Greece,Address for correspondence: Dr. Anastasia Tsiaousidou, 60 Lister Court, DD2 1UY, Dundee, UK. E-mail:
| | - Nikolaos Ouzounidis
- Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Faculty of Medicine, Aristotle University of Thessaloniki, Konstantinoupoleos, Thessaloniki, Greece
| | - Evanthia Tsalkidou
- Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Faculty of Medicine, Aristotle University of Thessaloniki, Konstantinoupoleos, Thessaloniki, Greece
| | - Maria Lambropoulou
- Laboratory of Histology, Aristotle University of Thessaloniki, Konstantinoupoleos, Thessaloniki, Greece
| | - Dimitrios Giakoustidis
- Department of Transplant Surgery, Aristotle University of Thessaloniki, Konstantinoupoleos, Thessaloniki, Greece
| | - Ekaterini Chatzaki
- Laboratory of Pharmacology, Democritus University of Thrace, Dragana Alexandroupolis, Greece
| | - Constantinos Simopoulos
- Department of Surgery and Laboratory of Experimental Surgery, School of Medicine, Aristotle University of Thessaloniki, Konstantinoupoleos, Thessaloniki, Greece,Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Faculty of Medicine, Aristotle University of Thessaloniki, Konstantinoupoleos, Thessaloniki, Greece
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Karayiannakis AJ, Kakolyris S, Giatromanolaki A, Courcoutsakis N, Bolanaki H, Chelis L, Sivridis E, Simopoulos C. Hepatoid Adenocarcinoma of the Gallbladder : Case Report and Literature Review. J Gastrointest Cancer 2016; 43 Suppl 1:S139-44. [PMID: 21935757 DOI: 10.1007/s12029-011-9326-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Anastasios J Karayiannakis
- Second Department of Surgery, Democritus University of Thrace, Medical School, 68 100, Alexandroupolis, Greece.
| | - Stylianos Kakolyris
- Department of Clinical Oncology, Democritus University of Thrace, Medical School, 68 100, Alexandroupolis, Greece
| | - Alexandra Giatromanolaki
- Department of Pathology, Democritus University of Thrace, Medical School, 68 100, Alexandroupolis, Greece
| | - Nikos Courcoutsakis
- Department of Radiology and Medical Imaging, Democritus University of Thrace, Medical School, 68 100, Alexandroupolis, Greece
| | - Helen Bolanaki
- Second Department of Surgery, Democritus University of Thrace, Medical School, 68 100, Alexandroupolis, Greece
| | - Leonidas Chelis
- Department of Clinical Oncology, Democritus University of Thrace, Medical School, 68 100, Alexandroupolis, Greece
| | - Efthimios Sivridis
- Department of Pathology, Democritus University of Thrace, Medical School, 68 100, Alexandroupolis, Greece
| | - Constantinos Simopoulos
- Second Department of Surgery, Democritus University of Thrace, Medical School, 68 100, Alexandroupolis, Greece
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30
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Polychronidis A, Tsaroucha AK, Karayiannakis AJ, Perente S, Efstathiou E, Simopoulos C. Delayed Perforation of the Large Bowel due to Thermal Injury during Laparoscopic Cholecystectomy. J Int Med Res 2016; 33:360-3. [PMID: 15938598 DOI: 10.1177/147323000503300312] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
We report a case of delayed perforation of the large bowel because of thermal injury during a laparoscopic cholecystectomy. A 78-year-old male with symptomatic cholelithiasis underwent a difficult laparoscopic cholecystectomy because of multiple adhesions resulting from two previous cholecystitis episodes. The patient recovered well after surgery and was discharged on post-operative day 2. On postoperative day 10, the patient returned to the hospital with peritonitis. An exploratory laparotomy revealed perforation of the wall of the hepatic flexure of the large bowel, which was centred in a necrotic area 1 cm in diameter. The perforation was sutured and a temporary ileostomy performed, which was closed at a later date. The patient was doing well at a 10-month follow-up review. A delayed rupture of any part of the bowel after laparoscopic surgery can be potentially fatal if not treated during an emergency exploratory laparotomy, even if the clinical signs are not severe.
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Affiliation(s)
- A Polychronidis
- Second Department of Surgery, Democritus University of Thrace, Alexandroupolis, Greece
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31
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Mallouris A, Kakagia D, Yiacoumettis A, Vasilakaki T, Drougou A, Lambropoulou M, Simopoulos C, Tsaroucha A. Histological Comparison of the Human Trunk Skin Creases: The Role of the Elastic Fiber Component. Eplasty 2016; 16:e15. [PMID: 27081433 PMCID: PMC4815355] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/29/2022]
Abstract
OBJECTIVE Skin creases are features of major anatomical, morphological, surgical, and functional interest. This study focuses on the histological comparison of creases of the trunk and participation of the elastic fibers in their formation. The histological structure is a key consideration for the reconstructive planning of the relevant area and its knowledge may contribute in such direction. METHODS Fresh cadaver specimens were collected from the inframammary (n = 15), infragluteal (n = 16), and inguinal creases (n = 14), the anterior axillary fold (n = 14), and the surrounding skin (n = 10). Specimens were fixed in 10% buffered formaldehyde. Collagen and muscle fibers were stained by Masson Trichrome and Van Gieson stains, reticular and collagen type III fibers by Reticulin stain, and elastic fibers by Verhoef and Orcein stains. RESULTS Skin creases of the trunk present well-defined dense bundles of collagen fibers, creating a beehive pattern with broad attachment to the dermis and denser in deeper sites related to the fascia of the underlying muscle. The elastic fibers participate in the collagen pattern and radiate in a parallel pattern in the reticular dermis and in a perpendicular fashion in the papillary dermis. The skin surrounding the creases lacks such organization. CONCLUSIONS Creases of the trunk are formed by well-organized collagen bundles in a beehive pattern, attached to the dermis and related to the underlying muscle fascia. The elastic fibers participate in this structure and radiate in a parallel fashion in the reticular dermis and perpendicularly in the papillary dermis.
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Affiliation(s)
- Andreas Mallouris
- aAretaeion Hospital, Nicosia, Cyprus,bSecond Surgery Department, Democritus University of Thrace, Alexandroupoli, Greece,Correspondence:
| | - Despoina Kakagia
- cFirst Surgery Department, Democritus University of Thrace, Alexandroupoli, Greece
| | | | | | | | - Maria Lambropoulou
- gPathology Department, Democritus University of Thrace, Alexandroupoli, Greece
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32
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Pitiakoudis M, Tsaroucha AK, Katotomichelakis M, Polychronidis A, Simopoulos C. Laparoscopic Cholecystectomy in a Patient with Situs Inversus Using Ultrasonically Activated Coagulating Scissors. Report of a Case and Review of the Literature. Acta Chir Belg 2016. [DOI: 10.1080/00015458.2005.11679682] [Citation(s) in RCA: 4] [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] [Indexed: 10/28/2022]
Affiliation(s)
- M. Pitiakoudis
- 2nd Department of Surgery, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - A. K. Tsaroucha
- 2nd Department of Surgery, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - M. Katotomichelakis
- 2nd Department of Surgery, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - A. Polychronidis
- 2nd Department of Surgery, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - C. Simopoulos
- 2nd Department of Surgery, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
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Pitiakoudis M, Zezos P, Kouklakis G, Tsalikidis C, Romanidis K, Vradelis S, Tsaroucha AK, Kakolyris S, Simopoulos C. Endoscopically Assisted Transumbilical Single-Incision Laparoscopic Gastric Resection for GIST Treatment. J INVEST SURG 2015; 29:98-105. [PMID: 26631974 DOI: 10.3109/08941939.2015.1081309] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PURPOSE Complete surgical resection with negative margins without lymphadenectomy is the treatment of choice for nonmetastatic Gastrointestinal Stromal Tumors (GISTs). Laparoscopic resection of gastric GISTs <5 cm is an acceptable and oncologically feasible, safe, and effective treatment. We present our experience of an endoscopically assisted minimally invasive transumbilical single-incision laparoscopic (SILS) technique for gastric GISTs resection. METHODS Four patients with small gastric GISTs ≤5 cm located on the greater curvature or the anterior wall were resected with SILS by using a lesion-lifting technique under the guidance of flexible gastroscopy. RESULTS The technique was feasible and safe and offered significant advantages in locating the tumor and controlling the resection margins. There were no major intraoperative or postoperative complications, conversions, or tumor ruptures. Pathology showed low-risk GISTs resected with disease-free margins without tumor rupture. No recurrences have been observed. CONCLUSION The endoscopically assisted SILS wedge gastrectomy is a feasible, safe, and advantageous technique for the treatment of the greater curvature or anterior wall gastric GISTs.
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Affiliation(s)
- Michail Pitiakoudis
- a 2nd Department of Surgery , Democritus University of Thrace, University General Hospital , Dragana , Alexandroupolis , Greece
| | - Petros Zezos
- b Gastrointestinal Endoscopy Unit , Democritus University of Thrace, University General Hospital , Dragana , Alexandroupolis , Greece
| | - Georgios Kouklakis
- b Gastrointestinal Endoscopy Unit , Democritus University of Thrace, University General Hospital , Dragana , Alexandroupolis , Greece
| | - Christos Tsalikidis
- a 2nd Department of Surgery , Democritus University of Thrace, University General Hospital , Dragana , Alexandroupolis , Greece
| | - Konstantinos Romanidis
- a 2nd Department of Surgery , Democritus University of Thrace, University General Hospital , Dragana , Alexandroupolis , Greece
| | - Stergios Vradelis
- b Gastrointestinal Endoscopy Unit , Democritus University of Thrace, University General Hospital , Dragana , Alexandroupolis , Greece
| | - Alexandra K Tsaroucha
- a 2nd Department of Surgery , Democritus University of Thrace, University General Hospital , Dragana , Alexandroupolis , Greece
| | - Stylianos Kakolyris
- c Department of Oncology , Democritus University of Thrace, University General Hospital , Dragana , Alexandroupolis , Greece
| | - Constantinos Simopoulos
- a 2nd Department of Surgery , Democritus University of Thrace, University General Hospital , Dragana , Alexandroupolis , Greece
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Basios N, Lampropoulos P, Papalois A, Lambropoulou M, Pitiakoudis MK, Kotini A, Simopoulos C, Tsaroucha AK. Apigenin Attenuates Inflammation in Experimentally Induced Acute Pancreatitis-Associated Lung Injury. J INVEST SURG 2015; 29:121-7. [PMID: 26631908 DOI: 10.3109/08941939.2015.1088603] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Acute pancreatitis is associated with acute lung injury. The aim of the present study is to evaluate alterations of lungs in an experimental model of acute pancreatitis (AP) following both bilio-pancreatic duct obstruction close to the duodenum. Acute pancreatitis is a common disease with significant mortality. This situation makes the need of finding protective factors for the lung parenchyma, imperative. In the present study there is an effort to clarify the role of apigenin, a substance which is well known for its antioxidant and anti-inflammatory effects, on lung injury, following acute pancreatitis in rats. MATERIALS AND METHODS In the present study, 126 male Wistar-type rats 3-4 months old and 220-350 g weight were used. At time 0 we randomly assigned the following groups: Group Sham: Rats were subjected to virtual surgery. Group Control: Rats were subjected to surgery for induction of acute pancreatitis. Group Apigenin: Rats were subjected to surgery for induction of acute pancreatitis and enteral feeding with apigenin. Immunochemistry for TNF-α and IL-6 as well as MPO activity were measured at predetermined time intervals 6, 12, 24, 48, and 72 h, in order to evaluate architectural disturbances of the lung tissue. RESULTS From the pathological reports we realized that comparing the control group with the apigenin group, there is an improvement of lung tissue damage following apigenin administration, with statistical significance. Apigenin reduces most histopathological alterations of the pulmonary tissue, reduces MPO and TNF-α activity at 48 hours and, furthermore, reduces IL-6 activity at 72 hours post-administration. CONCLUSIONS Oral Apigenin administration in rats, following experimental induced acute pancreatitis, seems to be protective on the lung tissue. Apigenin administration to humans could potentially ameliorate acute lung injuries. However, special caution is required for humans' use, as more detailed studies are needed.
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Affiliation(s)
- Neofitos Basios
- a Demokritos University of Thrace, Second Department of Surgery , University Hospital of Alexandroupolis , Alexandroupolis , Greece
| | | | - Apostolos Papalois
- c Experimental -Research Center, ELPEN Pharmaceuticals , Pikermi , Greece
| | - Maria Lambropoulou
- d Demokritos University of Thrace, Department of Histology , University Hospital of Alexandroupolis , Alexandroupolis , Greece
| | - Michael K Pitiakoudis
- a Demokritos University of Thrace, Second Department of Surgery , University Hospital of Alexandroupolis , Alexandroupolis , Greece
| | - Athanasia Kotini
- e Demokritos University of Thrace, Laboratory of Medical Physics , University Hospital of Alexandroupolis , Alexandroupolis , Greece
| | - Constantinos Simopoulos
- a Demokritos University of Thrace, Second Department of Surgery , University Hospital of Alexandroupolis , Alexandroupolis , Greece
| | - Alexandra K Tsaroucha
- a Demokritos University of Thrace, Second Department of Surgery , University Hospital of Alexandroupolis , Alexandroupolis , Greece
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Skondras I, Lambropoulou M, Tsaroucha A, Gardikis S, Tripsianis G, Simopoulos C, Vaos G. The role of Apigenin in testicular damage in experimental ischemia-reperfusion injury in rats. Hippokratia 2015; 19:225-230. [PMID: 27418781 PMCID: PMC4938469] [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: 06/06/2023]
Abstract
BACKGROUND Testicular torsion is an acute urologic emergency occurring in male newborns, children or adolescents. Prolonged ischemia for more than six hours can lead to irreversible testicular damage. Surgical detorsion allows reperfusion and is the only treatment currently available. The aim of this study was to evaluate the antioxidant effect of apigenin (APG) on the testicular ischemia-reperfusion (I/R) injury. METHODS Forty-two Wistar rats were randomly divided into five groups. Sham group underwent operation of the left testis. In the torsion-detorsion groups C15 and C120, the left testis was rotated 1080(o) for three hours. The treatment groups Ap15 and Ap120 received the same surgical procedure as groups C15 and C120, but APG was administered intravenously at the same time of detorsion via the right femoral vein. Left orchiectomy was performed 15 min after detorsion at groups C15 and Ap15, and at 120 min at groups C120 and Ap120 for histopathologic and immunohistochemical evaluation. RESULTS In I/R-untreated groups C15 and C120, there was a moderate to severe distortion of the tubules with lesions that varied between grades III and IV according to histopathological finding. In APG-treated groups Ap15 and Ap120, most of the lesions showed injuries of grades II and III with mild and moderate histopathological features. In Terminal deoxynucleotide transferase dUTP Nick End Labeling (Tunel) assay, APG-treated animals showed a statistically significantly decreased number of apoptotic cells compared to groups C15 and C120. CONCLUSION Intravenous administration of APG seems to have a protective effect on testicular ischemia-reperfusion injury after testicular torsion and detorsion. Hippokratia 2015; 19 (3): 225-230.
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Affiliation(s)
- I Skondras
- Department of Pediatric Surgery, Democritus University of Thrace, Alexandroupolis, Greece
| | - M Lambropoulou
- Laboratory of Histology, Democritus University of Thrace, Alexandroupolis, Greece
| | - A Tsaroucha
- 2 Department of Surgery and Laboratory of Experimental Surgery, Democritus University of Thrace, Alexandroupolis, Greece
| | - S Gardikis
- Department of Pediatric Surgery, Democritus University of Thrace, Alexandroupolis, Greece
| | - G Tripsianis
- Laboratory of Medical Statistics, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - C Simopoulos
- 2 Department of Surgery and Laboratory of Experimental Surgery, Democritus University of Thrace, Alexandroupolis, Greece
| | - G Vaos
- Department of Pediatric Surgery, Democritus University of Thrace, Alexandroupolis, Greece
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Ypsilantis P, Lambropoulou M, Tentes I, Chryssidou M, Georgantas T, Simopoulos C. Room air versus carbon dioxide pneumoperitoneum: effects on oxidative state, apoptosis and histology of splanchnic organs. Surg Endosc 2015; 30:1388-95. [PMID: 26123338 DOI: 10.1007/s00464-015-4341-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 06/15/2015] [Indexed: 11/27/2022]
Abstract
BACKGROUND Although CO2 is the insufflation gas of choice in laparoscopic procedures, room air is usually used in natural orifice transluminal endoscopic surgery. The aim of the present study was to compare the safety of room air versus CO2 pneumoperitoneum in terms of their effect on the oxidative state, apoptosis and tissue injury of splanchnic organs. METHODS Eighteen Wistar rats were assigned to three groups (n = 6 per group) and were subjected to 8 mm Hg room air (group Pne-Air) or CO2 pneumoperitoneum (group Pne-CO2) or sham operation for 60 min. Forty-five minutes postdeflation, tissue samples were excised from the liver, stomach, ileum and kidneys for reduced glutathione-to-glutathione disulfide (GSH/GSSG) ratio, caspase-8 and caspase-3 and hypoxia-inducible factor-1α (HIF-1α) immunohistochemical assessment and histopathologic examination. RESULTS GSH/GSSG ratio substantially declined in both pneumoperitoneum groups. No change was noted in HIF-1α expression. Mild upregulation of caspase-8 and caspase-3 was noted in both pneumoperitoneum groups being less pronounced in group Pne-Air. Histopathologic score was increased in all organs studied, but the stomach, in both pneumoperitoneum groups. CONCLUSION Pneumoperitoneum established by either room air or CO2 induced substantial oxidative stress, mild apoptosis and mild tissue injury in splanchnic organs. While air pneumoperitoneum conferred a less pronounced apoptotic effect, the oxidative state and histopathologic profile of splanchnic organs did not differ between insufflation gases.
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Affiliation(s)
- Petros Ypsilantis
- Laboratory of Experimental Surgery and Surgical Research, School of Medicine, Democritus University of Thrace, University Hospital of Alexandroupolis, Dragana, 68100, Alexandroupolis, Greece.
| | - Maria Lambropoulou
- Laboratory of Histology and Embryology, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Ioannis Tentes
- Laboratory of Biochemistry, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Maria Chryssidou
- Laboratory of Experimental Surgery and Surgical Research, School of Medicine, Democritus University of Thrace, University Hospital of Alexandroupolis, Dragana, 68100, Alexandroupolis, Greece
| | - Themistoklis Georgantas
- Laboratory of Experimental Surgery and Surgical Research, School of Medicine, Democritus University of Thrace, University Hospital of Alexandroupolis, Dragana, 68100, Alexandroupolis, Greece
| | - Constantinos Simopoulos
- Laboratory of Experimental Surgery and Surgical Research, School of Medicine, Democritus University of Thrace, University Hospital of Alexandroupolis, Dragana, 68100, Alexandroupolis, Greece
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Tsiaousidou A, Tsaroucha AK, Lambropoulou M, Pitiakoudis M, Polychronidis A, Chatzitheoklitos E, Romanidis K, Simopoulos C. Increased B7H4 tissue expression correlates with high CA19.9 serum levels and a worse prognosis of pancreatic adenocarcinoma. Clin Exp Med 2015; 16:351-6. [DOI: 10.1007/s10238-015-0352-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 04/19/2015] [Indexed: 02/02/2023]
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Pardalis V, Palli E, Lambropoulou M, Tsigalou C, Anagnostoulis S, Garoufalis G, Bolanaki H, Simopoulos C, Karayiannakis AJ. Expression of Fas (CD95/APO-1) and Fas ligand (FasL) in experimentally-induced acute pancreatitis. J INVEST SURG 2014; 27:65-72. [PMID: 24665842 DOI: 10.3109/08941939.2013.837563] [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] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
INTRODUCTION Acinar cell death is a crucial event in acute pancreatitis (AP) and may occur either by apoptosis or necrosis. The aim of this study was to investigate the expression of the apoptosis associated proteins Fas and FasL in experimentally induced severe AP. METHODS AP was induced in 30 rats by injecting 0.2 ml of 4.5% sodium taurocholate solution into the biliopancreatic duct. Sham operated animals (n = 30) and 10 normal controls were used for comparisons. Animals were killed at 6, 12, 24, 48, 72 hr and 1 week after operation (five animals at each time point) and both serum and pancreatic tissue were obtained. The severity of AP was graded by morphological evaluation and by measuring serum amylase levels. Acinar cell apoptosis was detected by the terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick-end labeling (TUNEL) assay. Tissue expressions of Fas and FasL were evaluated by immunohistochemistry. RESULTS Sodium taurocholate injection resulted in severe acute necrotizing pancreatitis as early as six hr after taurocholate infusion with gradually increasing severity and a peak at 72 hr, and a significant increase of serum amylase at 6 and 12 hr. Apoptotic acinar cells were observed between 48 and 72 hr. The expression of both Fas and FasL in pancreatic tissue was induced in comparison with normal controls. Fas expression in AP was higher and statistically significant at 24 hr whereas FasL expression was consistently lower with a statistical significance observed at 12 hr when compared to sham-operated animals suggesting Fas upregulation and FasL downregulation in this model of AP. CONCLUSIONS Induction and sequential changes in the expressions of Fas and FasL occur during taurocholate induced severe AP in rats and their temporal modulation might associate with acinar cell death by apoptosis.
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Affiliation(s)
- Vassilios Pardalis
- 1Second Department of Surgery, Democritus University of Thrace, Medical School, Alexandroupolis, Greece
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Vlachos S, Tsaroucha AK, Konstantoudakis G, Papachristou F, Trypsianis G, Schizas D, Vaos G, Simopoulos C. Serum profiles of M30, M65 and interleukin-17 compared with C-reactive protein in patients with mild and severe acute pancreatitis. J Hepatobiliary Pancreat Sci 2014; 21:911-8. [PMID: 25214429 DOI: 10.1002/jhbp.162] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND Several studies state that a test of severity early in the course of acute pancreatitis is still needed. In this prospective study, an assay of the biomarkers M30 and M65 as well as of interleukin 17 (IL-17) is investigated. METHODS One hundred and fifty patients and 70 controls were evaluated. The prognostic value of M30, M65 and their ratio M30/M65 is assessed by ELISA. The same method is used for the study of IL-17. RESULTS At 24 h after symptom onset, the concentrations of M30 and M65 as well as their ratio, differed significantly in severe compared to mild disease (P = 0.016). C-reactive protein (CRP) was significantly higher (P < 0.001) in severe pancreatitis on the same day. The sensitivity of M65 to show severe acute pancreatitis at 24 h was 100% for values above the cut-off point of 428.15 U/l. The sensitivity of CRP was 100% as well. Concerning IL-17, its concentrations were higher in patients than in the control group (P < 0.001) in the first 24 h. CONCLUSIONS Plasma concentrations of M65 and the M30/M65 ratio can be useful in predicting the severity of acute pancreatitis as early as 24 h after the onset of symptoms. The rates of IL-17 early in the course of acute pancreatitis are indicative of the disease.
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Affiliation(s)
- Sotirios Vlachos
- Second Department of Surgery, Medical School, Democritus University of Thrace, University Hospital of Alexandroupolis, Alexandroupolis, 68100, Greece; Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
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Romanidis K, Karathanos E, Nagorni EA, Giatromanolaki A, Sibridis E, Zissimopoulos A, Vogiatzaki T, Simopoulos C, Pitiakoudis M. Parathyroid adenoma detected with 99mTc-tetrofosmin dual-phase scintigraphy: a case report. BMC Res Notes 2014; 7:335. [PMID: 24894734 PMCID: PMC4076066 DOI: 10.1186/1756-0500-7-335] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [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: 10/13/2013] [Accepted: 05/26/2014] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Tc-sestamibi is the most frequently used radionuclide agent for the detection of parathyroid adenomas in the clinical setting. However, Tc-tetrofosmin is another such agent that may be used for this purpose. This case report presents the significance and practicality of 99mTc-tetrofosmin for the diagnosis of parathyroid adenomas with probable high p-glycoprotein levels. CASE PRESENTATION A 45-year-old woman was referred to our Nuclear Department with a palpable neck nodule suspicious for parathyroid adenoma. She had no significant medical history or other accompanying symptoms. Blood examination results were normal with the exception of the parathormone level which was high at 167.2 pg/ml. Neck ultrasonography revealed a hypoechoic mass near the lower pole of the thyroid gland. 99m Tc-tetrofosmin dual-phase scintigraphy with early and delayed images was performed and the results supported the presupposition of parathyroid adenoma as shown by increased radiopharmaceutical levels near the lower left thyroid gland on the early image that disappeared on the delayed image. Moreover, TcO4- thyroid scintigraphy results excluded thyroid pathology. Two months after the diagnosis, parathyroidectomy was successfully performed without postoperative complications. The pathology report and clinical response to a gradual decrease of parathormone confirmed the initial diagnosis. CONCLUSION We strongly recommend the use of reverse 99m Tc-tetrofosmin scintigraphy as a useful and safe examination technique for the diagnosis of parathyroid adenomas.
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Affiliation(s)
- Konstantinos Romanidis
- Second Department of Surgery, Medical School, Democritus University of Thrace, Dragana, Alexandroupolis 68100, Greece
| | - Evangelos Karathanos
- Department of Nuclear Medicine, Medical School, Democritus University of Thrace, Dragana, Alexandroupolis 68100, Greece
| | - Eleni-Aikaterini Nagorni
- Second Department of Surgery, Medical School, Democritus University of Thrace, Dragana, Alexandroupolis 68100, Greece
| | - Alexandra Giatromanolaki
- Department of Pathology, University General Hospital of Alexandroupolis, Alexandroupolis, Greece
| | - Efthimios Sibridis
- Department of Pathology, University General Hospital of Alexandroupolis, Alexandroupolis, Greece
| | - Athanassios Zissimopoulos
- Department of Nuclear Medicine, Medical School, Democritus University of Thrace, Dragana, Alexandroupolis 68100, Greece
| | - Theodosia Vogiatzaki
- Department of Anaesthesiology, Democritus University of Thrace, Alexandroupolis, Greece
| | - Constantinos Simopoulos
- Second Department of Surgery, Medical School, Democritus University of Thrace, Dragana, Alexandroupolis 68100, Greece
| | - Michael Pitiakoudis
- Second Department of Surgery, Medical School, Democritus University of Thrace, Dragana, Alexandroupolis 68100, Greece
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Lampropoulos P, Lambropoulou M, Papalois A, Basios N, Manousi M, Simopoulos C, Tsaroucha AK. The role of apigenin in an experimental model of acute pancreatitis. J Surg Res 2013; 183:129-37. [DOI: 10.1016/j.jss.2012.11.053] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Revised: 10/24/2012] [Accepted: 11/29/2012] [Indexed: 01/02/2023]
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Ypsilantis P, Lambropoulou M, Kourkoutas I, Pechlivanis A, Simopoulos C. Liver radiofrequency ablation compromises the biological gut barrier. Hum Exp Toxicol 2013; 33:64-73. [PMID: 23703816 DOI: 10.1177/0960327113489049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
AIM Liver radiofrequency ablation (RFA) has been shown to disrupt the mechanical component of the gut barrier. The aim of the present study was to investigate the consequences of liver RFA on the biological gut barrier in terms of the effects of bile production rate and bowel inflammatory state on intestinal microflora balance. METHOD A total of 25 New Zealand rabbits were assigned to five groups (n = 5 per group): group CBD: subjected to common bile duct (CBD) extracorporeal bypass; group CBD-RFA: subjected to CBD bypass plus one session of open liver RFA; group RFA: subjected to liver RFA; group sham: subjected to sham operation; and group TBD: subjected to total bile deviation (TBD). In groups CBD and CBD-RFA, bile production rate was assessed for 48 h. In groups sham and RFA, measurement of biliary glycine conjugates of cholic and deoxycholic acid levels, histopathologic examination of the non-ablated liver tissue, morphometric analysis, and histopathologic examination of the terminal ileum and microbiological analysis of fecal and tissue samples collected from the jejunum and the cecum (and in group TBD) were performed at 48 h post-operation. RESULTS One session of liver RFA resulted in ablation of 18.7 ± 2.7% of liver weight. Following liver RFA, bile production rate was reduced, while the levels of biliary bile salts were not affected. There was mild injury of the non-ablated liver parenchyma, mild intestinal wall inflammation, intestinal mucosa atrophy, and intestinal microbial population overgrowth. CONCLUSION Reduced in bile production and mild bowel inflammation secondary to liver RFA impaired the biological gut barrier as manifested by intestinal microflora imbalance.
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Affiliation(s)
- P Ypsilantis
- 1Laboratory of Experimental Surgery and Surgical Research, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
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Papachristou F, Chatzaki E, Petrou A, Kougioumtzi I, Katsikogiannis N, Papalambros A, Tripsianis G, Simopoulos C, Tsaroucha AK. Time course changes of anti- and pro-apoptotic proteins in apigenin-induced genotoxicity. Chin Med 2013; 8:9. [PMID: 23642018 PMCID: PMC3660279 DOI: 10.1186/1749-8546-8-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [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: 06/19/2012] [Accepted: 04/30/2013] [Indexed: 02/08/2023] Open
Abstract
Background Apigenin (4′,5,7-trihydroxyflavone, AP), an active component of many medicinal Chinese herbs, exhibits anticancer properties in vitro and in vivo. This study aims to investigate the genotoxic, cytostatic, and cytotoxic effects of AP and time course changes in the levels of anti- and pro-apoptotic proteins involved in the DNA damage response in HepG2 cells. Methods The genotoxic potential of AP was determined by sister chromatid exchanges (SCEs) and chromosomal aberrations (CAs) analysis. The levels of cytostaticity and cytotoxicity were evaluated by the proliferation rate and mitotic indices, respectively. MTT was used to study cytotoxicity, while the induction of apoptosis and the expression of apoptosis-related proteins were determined by ELISA. Results At concentrations greater than 10 μM, AP decreased cell survival in a dose- (48 h: 10 vs. 20 μΜ, P < 0.001 and 20 vs. 50 μΜ, P = 0.005; 72 h: 10 vs. 20 μΜ, P < 0.001 and 20 vs. 50 μΜ, P = 0.001) and time-dependent manner (20 μΜ: 24 vs. 48 h, P < 0.001 and 48 vs. 72 h, P = 0.003; 50 μΜ: 24 vs. 48 h, P < 0.001 and 48 vs. 72 h, P < 0.001; 100 μΜ: 24 vs. 48 h, P < 0.001 and 48 vs. 72 h, P < 0.001). SCEs rates, cell proliferation, and mitotic divisions were also affected in a dose-dependent manner (P < 0.001). There was no change in the frequency of aberrant cells (1 μΜ ΑP: P = 0.554; 10 μM AP: P = 0.337; 20 μΜ AP: P = 0.239). Bcl-2 levels were reduced 3 h after AP administration (P = 0.003) and remained reduced throughout the 48 h observation period (6 h, P = 0.044; 12 h, P = 0.001; 24 h, P = 0.042; 48 h, P = 0.012). Bax and soluble Fas exhibited a transient upregulation 24 h after AP treatment. The Bax/Bcl-2 ratio was also increased at 12 h and remained increased throughout the 48 h observation period. Conclusion AP exhibited dose-dependent genotoxic potential in HepG2 cells. The protein levels of sFas, Bcl-2, and Bax were affected by AP to promote cell survival and cell death, respectively.
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Affiliation(s)
- Fotini Papachristou
- Cell Cultures Unit, Laboratory of Experimental Surgery and Surgical Research, Faculty of Medicine, Democritus University of Thrace, Dragana, Alexandroupolis, Greece.
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Zezos P, Christoforidou A, Kouklakis G, Tsalikidis C, Dimakis C, Laftsidis P, Virgiliou A, Simopoulos C, Pitiakoudis M. Coagulation and fibrinolysis activation after single-incision versus standard laparoscopic cholecystectomy: a single-center prospective case-controlled pilot study. Surg Innov 2013; 21:22-31. [PMID: 23575915 DOI: 10.1177/1553350613484591] [Citation(s) in RCA: 6] [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] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Laparoscopic cholecystectomy is associated with attenuated acute-phase response and hypercoagulable state compared with the open procedure. Single-incision laparoscopic cholecystectomy is a new technique aiming to minimize the invasiveness of the procedure. By comparing the degree of coagulation and fibrinolysis activation after conventional multiport (CLC) and single-incision (SILC) laparoscopic cholecystectomy, we aimed to determine whether the reduced incision size induces a lower thrombophilic tendency. Thirty-two adult patients with noncomplicated symptomatic cholelithiasis were nonrandomly assigned to CLC or SILC. Prothrombin fragment 1 + 2 (F1 + 2), thrombin-antithrombin complexes (TAT), D-dimers, fibrinogen, and von Willebrand factor levels were measured at baseline, at 1st, and 24th hour, postoperatively. Twenty-six patients were finally included in the study. Fifteen patients underwent CLC (male/female: 5/10) and 11 underwent SILC (male/female: 1/10). There were no perioperative complications. An almost similar postoperative pattern and degree of activation of coagulation and fibrinolysis pathways was noted in both groups. No statistically significant differences were found between SILC and CLC for F1 + 2, TAT, D-dimers, fibrinogen, and von Willebrand factor levels, duration of surgery, length of hospital stay, and postoperative morbidity. A similar pattern and extent of coagulation and fibrinolysis activation is present in SILC and CLC, and therefore there is no difference in tendency for thrombosis. Thromboembolic prophylaxis should be considered in SILC as recommended for CLC, pharmacologic or mechanical, considering the hemorrhagic risk and the presence of additional thromboembolism risk factors. SILC appears to be a safe, feasible technique that can be recommended for its potential advantages in cosmesis and reduced incisional pain.
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Affiliation(s)
- Petros Zezos
- 1University General Hospital, Democritus University of Thrace, Dragana, Alexandroupolis, Greece
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Ypsilantis P, Didilis V, Simopoulos C. Evaluation of the oscillometric technique for intermittent non-invasive arterial blood pressure measurement in the anaesthetized pig. Lab Anim 2013; 47:94-9. [PMID: 23563363 DOI: 10.1177/0023677213475438] [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] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This study was designed to evaluate the oscillometric technique for intermittent non-invasive measurement of arterial pressure (AP) in the anaesthetized pig. In six pigs under sevoflurane anaesthesia, intermittent (every 2 minutes) oscillometric measurements of AP made at a forelimb (FL), a hindlimb (HL) and the tail base were compared with simultaneous direct AP measurements made at the aortic arch (AA) over a wide pressure range (30-140 mmHg of mean AP). All oscillometric measurements strongly correlated (Pearson correlation coefficient >0.837, P < 0.001) with direct AP measurements, with those made at the FL exhibiting the highest correlation. On the basis of consistency of difference between oscillometric and AA pressure readings at graded pressure levels, measurements made at the tail base provided reliable prediction of systolic AP, at the FL of diastolic AP and at both the tail base and the FL of mean AP. In conclusion, oscillometric measurements at the FL and the tail base offer reliable prediction of AP in the anaesthetized pig.
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Affiliation(s)
- P Ypsilantis
- Laboratory of Experimental Surgery and Surgical Research, School of Medicine, Democritus University of Thrace, University Hospital of Alexandroupolis, 68100 Alexandroupolis, Greece.
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Ypsilantis P, Lambropoulou M, Alexiadis G, Papadopoulos N, Simopoulos C. A case of diffuse bilateral scrotal neurofibroma in a rabbit. J Small Anim Pract 2013; 54:491-4. [PMID: 23551182 DOI: 10.1111/jsap.12053] [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: 11/29/2022]
Abstract
This report details a rare case of diffuse bilateral scrotal neurofibroma complicated by hindlimb paralysis in a rabbit. The animal was evaluated for unusual bilateral scrotal enlargement. After physical examination, ultrasound scan, radiography, computed tomography and laparoscopy, surgical exploration of the scrotum was undertaken. A homogeneous rubbery firm mass was revealed in contact with the subcutaneous tissue expanding to the entire scrotum without involving the testicles. The mass was excised and diagnosed as diffuse scrotal neurofibroma based on histological and immunohistochemical findings (S-100 antibody positive). Over the following month, progressive neurological signs (faecal incontinence, flaccid bladder and hindlimb paralysis) were observed. After excluding central nervous system infection with Encephalitozoon cuniculi, expansion of the neurofibroma to the vertebral canal causing compression of the spinal cord was suspected, although not histopathologically verified.
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Affiliation(s)
- P Ypsilantis
- Laboratory of Experimental Surgery and Surgical Research, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
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Pitiakoudis M, Romanidis K, Nagorni EA, Kouklakis G, Tsalikidis C, Botaitis S, Iatrou C, Simopoulos C. Successful Management of a Truly Large Serous Cystadenoma with Laparoscopic Surgery: A Case Report and Literature Review. J Gynecol Surg 2013. [DOI: 10.1089/gyn.2012.0077] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Michael Pitiakoudis
- Second Department of Surgery, Democritus University of Thrace, Medical School, Dragana, Alexandroupolis, Greece
| | - Konstantinos Romanidis
- Second Department of Surgery, Democritus University of Thrace, Medical School, Dragana, Alexandroupolis, Greece
| | - Eleni-Aikaterini Nagorni
- Second Department of Surgery, Democritus University of Thrace, Medical School, Dragana, Alexandroupolis, Greece
| | - Georgios Kouklakis
- Gastrointestinal Endoscopy Unit, Democritus University of Thrace, University General Hospital of Alexandroupolis, Dragana, Alexandroupolis, Greece
| | - Christos Tsalikidis
- Second Department of Surgery, Democritus University of Thrace, Medical School, Dragana, Alexandroupolis, Greece
| | - Sotirios Botaitis
- Second Department of Surgery, Democritus University of Thrace, Medical School, Dragana, Alexandroupolis, Greece
| | - Christos Iatrou
- Department of Anesthesiology, Democritus University of Thrace, Alexandroupolis, Greece
| | - Constantinos Simopoulos
- Second Department of Surgery, Democritus University of Thrace, Medical School, Dragana, Alexandroupolis, Greece
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Efstathiou E, Gardikis S, Giatromanolaki A, Kambouri K, Sivridis E, Simopoulos C, Vaos G. Effect of VEGF on angiogenesis in pedicle penile skin flaps: an experimental study of urethral reconstruction in rabbits. Eur J Pediatr Surg 2012; 22:460-4. [PMID: 22782324 DOI: 10.1055/s-0032-1315808] [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] [Indexed: 10/28/2022]
Abstract
INTRODUCTION The aim of this study was to investigate the expression of vascular endothelial growth factor (VEGF) in pedicle penile skin flaps (PPSFs) used for urethral reconstruction in rabbits and the effect of exogenous VEGF on the angiogenesis process in the PPSFs. METHODS We randomly divided 28 male New Zealand rabbits into two sets of animals. A ventral urethral defect was created in all animals. In the first set of animals (first experiment, n = 10), a PPSF was used for the repair and VEGF expression in the flap was estimated on days 1, 2, 3, 5, and 7 postoperatively. The second set of animals (second experiment, n = 18) included three groups: control, untreated, and VEGF groups. In control group (n = 6), the defect was repaired by simple closure. In untreated (n = 6) and VEGF (n = 6) groups, a PPSF was used for the reconstruction. In VEGF group, exogenous VEGF was injected subdermally on the postoperative day corresponding to the peak endogenous VEGF expression (first experiment results). The animals were sacrificed on the 21st postoperative day and the angiogenic activity was assessed. A p < 0.05 was considered statistically significant. RESULTS The highest expression of endogenous VEGF in PPSFs was noted on postoperative day 3. Angiogenesis in control, untreated, and VEGF groups was 23.06 ± 4.1, 30.00 ± 6.9, and 34.7 ± 6.9 (mean values ± standard deviation) vessels per optical field, respectively. There were statistically significant differences between control-untreated groups (p = 0.04) and untreated-VEGF groups (p < 0.0001), and indicative difference between untreated and VEGF groups (p = 0.064). CONCLUSIONS VEGF is expressed in PPSFs, used for urethral reconstruction in rabbits. Flap angiogenesis is much higher than angiogenesis in simple wound closure. VEGF injection on postoperative day 3 seems to enhance angiogenesis in flaps.
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Affiliation(s)
- Elefteria Efstathiou
- Alexandroupolis University Hospital, Laboratory of Experimental Surgery and Surgical Research, Alexandroupolis, Greece
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Ypsilantis P, Politou M, Anagnostopoulos C, Kortsaris A, Simopoulos C. A rat model of cigarette smoke abuse liability. Comp Med 2012; 62:395-9. [PMID: 23114043 PMCID: PMC3472604] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2012] [Revised: 04/03/2012] [Accepted: 05/13/2012] [Indexed: 06/01/2023]
Abstract
We sought to develop a rat model of cigarette smoke exposure (CSE) that created cotinine serum levels comparable to those of smokers and induced conditioned place preference (CPP) suggestive of cigarette smoke abuse liability. Rats were exposed to sidestream cigarette smoke delivered semicontinuously for 2 periods of 20 (group S20), 40 (group S40), or 60 (group S60) min daily for 12 wk. Serum cotinine concentration in blood samples was determined at 1 and 20 h after CSE. A biased (black versus white chamber) CPP paradigm was used. In the high CSE group (group S60), serum cotinine at 1 h (250 to 300 ng/mL) was comparable to average cotinine levels reported for addicted smokers (around 300 ng/mL). Cotinine levels at 20 h after CSE were higher than the smoker-nonsmoker cut-off value (greater than 14 ng/mL) in all smoking groups, with the S60 group having the highest levels. All rats preferred the black chamber to the white chamber during the preexposure CPP test. The time spent in the white chamber was increased compared with 0-wk values in group S40 at 8 wk, group S60 at 4 and 8 wk, and the control group at 4 and 8 wk but not at 12 wk; however, the shift in CPP was significantly higher at 8 wk in group S60 compared with other groups. In conclusion, interrupted 2-h daily CSE for 8 wk induced serum cotinine levels in rats comparable to those of smokers and induced CPP suggestive of cigarette smoke abuse liability.
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Affiliation(s)
- Petros Ypsilantis
- Laboratory of Experimental Surgery and Surgical Research, Democritus University of Thrace, Alexandroupolis, Greece.
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Karayiannakis AJ, Bolanaki H, Courcoutsakis N, Kouklakis G, Moustafa E, Prassopoulos P, Simopoulos C. Common bile duct obstruction secondary to a periampullary diverticulum. Case Rep Gastroenterol 2012; 6:523-9. [PMID: 22949892 PMCID: PMC3433006 DOI: 10.1159/000341955] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Periampullary duodenal diverticula are not uncommon and are usually asymptomatic although complications may occasionally occur. Here, we report the case of a 72-year-old woman who presented with painless obstructive jaundice. Laboratory tests showed abnormally elevated serum concentrations of total and direct bilirubin, of alkaline phosphatase, of γ-glutamyl transpeptidase, and of aspartate and alanine aminotransferases. Serum concentrations of the tumor markers carbohydrate antigen 19-9 and carcinoembryonic antigen were normal. Abdominal ultrasonography showed dilatation of the common bile duct (CBD), but no gallstones were found either in the gallbladder or in the CBD. The gallbladder wall was normal. Computed tomography failed to detect the cause of CBD obstruction. Magnetic resonance imaging and magnetic resonance cholangiopancreatography revealed a periampullary diverticulum measuring 2 cm in diameter and compressing the CBD. The pancreatic duct was normal. Hypotonic duodenography demonstrated a periampullary diverticulum with a filling defect corresponding to the papilla. CBD compression by the diverticulum was considered as the cause of jaundice. The patient was successfully treated by surgical excision of the diverticulum. In conclusion, the presence of a periampullary diverticulum should be considered in elderly patients presenting with obstructive jaundice in the absence of CBD gallstones or of a tumor mass. Non-interventional imaging studies should be preferred for diagnosis of this condition, and surgical or endoscopic interventions should be used judiciously for the effective and safe treatment of these patients.
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