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Kourti M, Papakonstantinou E, Papagianni A, Arsos G, Ioannidou M, Pantoleon A, Antari V, Palabougiouki M, Kouskouras K, Venizelos I, Κoletsa T, Cheva A, Anastasiou A, Totikidis G, Tragiannidis A, Galli-Tsinopoulou A, Hatzipantelis E. Hodgkin Lymphoma in Children and Adolescents of Northern Greece: 25-Year Results and Long-term Follow-up. J Pediatr Hematol Oncol 2023; 45:322-326. [PMID: 36716084 DOI: 10.1097/mph.0000000000002625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 12/03/2022] [Indexed: 01/31/2023]
Abstract
Aim of this study was to evaluate the long-term therapeutic outcome and treatment-related complications in Hodgkin disease. We reviewed the medical records of 93 patients diagnosed with classic Hodgkin lymphoma, treated, and followed-up during the last 25 years. The cohort study included 49 males and 44 females with median age 11.8 years old (range: 3.95 to 17.42 y). The most common subtype was nodular sclerosis in 47/93 (50.5%). B symptoms were present in 15/93 (16.1%). From January 2009 until December 2020, 55 (59%) patients diagnosed with Hodgkin lymphoma were treated according to European Network for Pediatric Hodgkin Lymphoma (EURONET)-PHL-C1 protocol. Concerning outcome, a total of 89/93 patients are alive. Relapse occurred in 7/93. Second malignancies are reported in a total of 5 patients, 3 solid tumors (thyroid cancer, breast cancer, and osteosarcoma), and 2 acute myeloid leukemias. The overall survival and event-free survival for the whole cohort were 95.7% and 83.9%, respectively. Disease-free survival was 92.5%. Although a considerable high fraction of patients with Hodgkin disease can achieve continuous complete remission, they are at a high risk of developing long-term treatment-related complications. High curative rates as well as prevention of late effects can be achieved by implementation of individualized treatment strategies and innovative treatments.
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Agorastos T, Chatzistamatiou K, Tsertanidou A, Mouchtaropoulou E, Pasentsis K, Kitsou A, Moysiadis T, Moschaki V, Skenderi A, Katsiki E, Aggelidou S, Venizelos I, Ntoula M, Daponte A, Vanakara P, Garas A, Stefos T, Vrekoussis T, Lymberis V, Kontomanolis EN, Makrigiannakis A, Manidakis G, Deligeoroglou E, Panoskaltsis T, Decavalas GO, Michail G, Kalogiannidis I, Koukoulis G, Zempili P, Halatsi D, Truva T, Piha V, Agelena G, Chronopoulou A, Vaitsi V, Chatzaki E, Paschopoulos M, Adonakis G, Kaufmann AM, Hadzidimitriou A, Stamatopoulos K. Implementation of HPV-based Cervical Cancer Screening Combined with Self-sampling Using a Midwifery Network Across Rural Greece: The GRECOSELF Study. Cancer Prev Res (Phila) 2019; 12:701-710. [DOI: 10.1158/1940-6207.capr-19-0192] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 06/24/2019] [Accepted: 08/08/2019] [Indexed: 11/16/2022]
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Tamiolakis D, Venizelos I, Kotini A, Nikolaidou S, Papadopoulos N. Prevalence of CD8/CD4 Ratio in the Fetal Thymic Parenchyme in Down’s Syndrome. ACTA MEDICA (HRADEC KRALOVE, CZECH REPUBLIC) 2019. [DOI: 10.14712/18059694.2019.30] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Aim: The maturation of most T- lymphocyte precursors takes place within the meshwork of thymic epithelial cells. Different steps of this process can be defined by immunologic phenotyping. The prothymocytes are positive for the terminal deoxynucleotidyl transferase (TdT) and give rise to cortical thymocytes, which express CD1, CD2, CD3, CD5, and both CD4 and CD8. These CD4 and CD8 double-positive cortical thymocytes differentiate into two lineages: CD4+ or CD8+ lymphocytes of the thymic medulla, by the tenth week of gestation. Our study points towards the determination of the CD8 cytotoxic/suppressor capacity of the fetal thymus in Down’s syndrome. Experimental design: A quantitative comparison of T-lymphocytes (CD3, CD4, and CD8) in the thymic parenchyme in embryos after voluntary abortion during 2nd trimester of gestation and embryos with Down’s syndrome, respectively, was performed. Results: Our results showed: 1) A statistically significant depletion in the total number of T-cells (CD3 positive) in the cases of embryos with Down’s syndrome over those after voluntary abortion, during the second trimester of gestation (p<0.0001, t-test). 2) A significant difference in the CD8/CD4 ratio in the cases of embryos with Down’s syndrome, during the second trimester of gestation which was numerically stronger with the progress of fetal development (20th week: p<0.025; 24th week: p<0.01, chi-square). Conclusions: The occurrence of increased CD8/CD4 ratio in the cases with Down’s syndrome, in the second trimester of gestation, underlines the cytotoxic / suppressor property of the thymus in the affected fetuses.
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Tamiolakis D, Venizelos I, Lambropoulou M, Jivannakis T, Seliniotaki E, Tsikouras P, Limberis V, Tsalkidis A, Papadopoulos N. Gains and Losses of HLA Class II (DR) and CD4 in Atypical Hyperplasia, Carcinoma in situ and Infiltrating Ductal Carcinoma of the Breast. ACTA MEDICA (HRADEC KRÁLOVÉ) 2018. [DOI: 10.14712/18059694.2018.101] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Aim: Breast cancer is a frequent cause of death among women with gynaecologic malignancies despite the introduction of combination chemotherapy. There is therefore a need for new therapeutic strategies for patients with breast cancer, such as cellular immunotherapy. In this immunohistochemical study we analyzed the epithelial expression of major histocompatibility complex (MHC) class II (HLA-DR) on atypical and malignant primary mammary epithelial cells, as well as the magnitude of the stromal T lymphocytes (T4 subset) at the tumor site. Experimental design: The study was carried out retrospectively in tumor tissue from 82 patients with mammary lesions (31 cases of atypical ductal hyperplasia -ADH-, 12 cases of ductal carcinoma in situ –DCIS- and 39 cases of infiltrating ductal carcinoma not otherwise specified -IDC-NOS). Medullary carcinomas were not included in our investigation. Material used had been formalin fixed and paraffin embedded. Results: HLA class II (DR) was expressed in 20 of 31 ADHs (64.5%), in 4 of 12 DCISs (33.3%), and in 10 of 39 IDC-NOSs (25.6%). CD4 was expressed in 9 of 31 ADHs (29%), in 5 of 12 DCISs (42%), and in 26 of 39 IDCNOSs (67%). Conclusions: The results showed decreased epithelial expression of HLA class II (DR) and increased stromal expression of CD4, as the lesion progressed to malignancy. Gradual loss of epithelial HLA class II expression might be a manifestation of cellular differentiation from the atypical form versus the malignant one, signaling simultaneously a selective effect on the response capacity of the immune system.
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Kountouras J, Doulberis M, Polyzos SA, Papaefthymiou A, Kapetanakis N, Arapoglou S, Venizelos I, Vardaka E, Kotronis G, Anastasiadis S, Katsinelos P. Potential Impact of Active Helicobacter pylori Infection with or without Concomitant Metabolic Syndrome on Colorectal Cancer Invasion and Mortality. THE ISRAEL MEDICAL ASSOCIATION JOURNAL : IMAJ 2018; 20:725-726. [PMID: 30430809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
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Apalla Z, Nikolaidou C, Lallas A, Sotiriou E, Lazaridou E, Venizelos I, Bobos M, Vakirlis E, Ioannides D, Ferrara G. Clinicopathologically problematic melanocytic tumors: a case-based review. Dermatol Pract Concept 2018; 8:306-313. [PMID: 30479862 PMCID: PMC6246059 DOI: 10.5826/dpc.0804a12] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 05/31/2018] [Indexed: 01/31/2023] Open
Abstract
Background In spite of recent advances in the histopathological and molecular diagnosis of melanocytic neoplasms, a certain proportion of these lesions remain a daunting challenge for both the clinician and the pathologist. Objectives To emphasize the importance of close collaboration between clinicians and pathologists in case of problematic melanocytic lesions. Patients We report and discuss 5 problematic scenarios of melanocytic lesions, including tumoral melanosis, nevoid melanoma, lentiginous melanoma, spitzoid melanoma and BAPoma that may pose diagnostic difficulties in our practice. Conclusions Clinico-dermoscopic-pathological correlation, with incorporation of all the available data, in problematic melanocytic skin neoplasms is of paramount importance for accurate diagnosis.
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Micha AE, Psarras K, Ouroumidis O, Siska E, Vlachaki E, Lymperopoulos A, Symeonidis N, Nikolaidou C, Venizelos I, Koliakos G, Pavlidis TE. A Time Course of Bevacizumab (Anti-VEGF) Effect on Rat Peritoneum: Relations Between Antiadhesive Action and Fibrin Regulation Enzymes. Surg Innov 2017; 24:543-551. [PMID: 28877644 DOI: 10.1177/1553350617729510] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND To investigate the early and late antiadhesive effect and any changes of fibrin matrix regulation enzymes on rat peritoneum, after local administration of bevacizumab. METHODS Rats were subjected to cecal abrasion. Bevacizumab (5 mg/kg) against placebo was given intraperitoneally. On the 2nd, 14th, and 28th postoperative days adhesions were scored, and tissue plasminogen activator (tPA), plasminogen activator inhibitor-1 (PAI-1), matrix metalloproteinase-9 (MMP-9), degree of fibrosis, and angiogenesis were measured in abrased cecum and in intact parietal peritoneum. RESULTS Bevacizumab significantly reduced adhesions up to 15% on the 2nd, 52.5% on the 14th, and 55% on the 28th postoperative day, and significantly increased tPA concentrations in peritoneum. PAI-1 was decreased, and a significantly higher tPA/PAI-1 ratio along with an increase of MMP-9 was measured at all time points. Fibrosis and angiogenesis were significantly lower on the 14th and 28th postoperative days. CONCLUSIONS Local bevacizumab administration has a strong early and late antiadhesive action on rat peritoneum, mediated by changes in the tPA/PAI-1 and MMP balance in favor of fibrinolysis up to 28 days after operations.
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Petrakis G, Kostopoulos I, Venizelos I, Lambropoulou M, Vouras K, Vakalopoulou S, Mandala E, Tsatalas C, Papadopoulos N. Expression of the activation markers Blimp1, Foxp1 and pStat3 in extranodal diffuse large B-cell lymphomas. Histol Histopathol 2016; 32:825-834. [PMID: 27924626 DOI: 10.14670/hh-11-852] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Different studies have suggested that the expression of biomarkers related to lymphoid cell activation may provide information on the behavior of DLBCL. Most studies have concentrated on nodal or a mixture of nodal and extranodal lymphomas. The differential expression and potential clinical impact of these markers in a homogeneous group of extranodal DLBCLs are not well defined. In this study, we investigated the expression of three activation markers, Blimp1, Foxp1 and pStat3, in a cohort of 35 extranodal DLBCLs homogeneously treated with R-CHOP. Immunohistochemical stains were evaluated using an immunoreactivity score on representative paraffin sections. Blimp1 was positive in 55% (19/35), Foxp1 in 60% (21/35), and pStat3 in 69% (24/35) of our cases. We did not observe any statistical differences in the expression of these markers in GCB and non-GCB tumors or in gastrointestinal and non-gastrointestinal tumors. Blimp1 expression was negatively correlated with overall survival (OS) (p=0.001) in the whole series and in the non-GCB group (Muris algorithm) (p=0.002). Foxp1 positivity and pStat3 positivity had no impact on the outcome of the patients in the global cohort, but they were associated with a better survival in the non-GCB subgroup (p=0.033, p=0.044 respectively). Multivariate analysis showed that Blimp1 expression but not COO was an independent negative prognostic factor for OS (HR=17.5, 95%, CI=2.2-141.1, p=0.007). Our results suggest that these markers are differentially expressed and have different impacts on outcome in extranodal DLBCLs compared to nodal tumors, emphasizing the need to evaluate separately these and probably other markers in these subsets of tumors.
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Deliligka A, Raikos N, Chatzinikolaou F, Venizelos I, Chatzopoulos K, Goulas A. Potential use of pericardial cTnI, Mg 2+ and Ca 2+ in the forensic investigation of seawater drowning in Greece: An initial assessment. Leg Med (Tokyo) 2016; 23:30-33. [PMID: 27890099 DOI: 10.1016/j.legalmed.2016.09.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 08/29/2016] [Accepted: 09/05/2016] [Indexed: 11/26/2022]
Abstract
The investigation of drowning constitutes one of the biggest problems in forensic practice. Elevated cardiac troponin I (cTnI) levels in biological fluids have been associated with myocardial damage, whereas increased Mg2+ and Ca2+ levels were found in cases of seawater drowning. The aim of this study was to examine the diagnostic utility of postmortem determination of cTnI, Mg2+ and Ca2+ in the pericardial fluid, in differentiating between cases of seawater drowning related to myocardial injury and those brought about by other causes. This study included 76 cases selected during a 2-year period from medicolegal autopsies. The cases were divided into three groups, according to the cause of death established based on macroscopic and microscopic evidence. The groups were: 1) seawater drowning (n=23), 2) seawater drowning with histological evidence of myocardial infarction (n=28), and 3) myocardial infarction unrelated to drowning (n=25). cTnI was determined with an enzyme immunoassay; Mg2+ and Ca2+ with standard colorimetric assays. Pericardial cTnI levels were significantly lower in group 1 compared to groups 2 and 3. In contrast, pericardial Mg2+ and Ca2+ levels were both significantly higher in groups 1 and 2 compared to group 3. Our results suggest that the postmortem determination of pericardial cTnI levels may be useful in detecting previous myocardial damage as a contributory factor in death from seawater drowning and provide independent confirmation of the usefulness of pericardial Mg2+ and Ca2+ levels for differentiating between seawater drowning and fatal acute myocardial injury unrelated to the former.
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Kountouras J, Polyzos SA, Gavalas E, Boziki M, Katsinelos P, Zeglinas C, Vardaka E, Kountouras C, Venizelos I, Anastasiadis S, Deretzi G. A potential impact of Helicobacter pylori infection on minimal hepatic encephalopathy pathobiology. JOURNAL OF GASTROINTESTINAL AND LIVER DISEASES : JGLD 2016; 25:405-6. [DOI: 10.15403/jgld.2014.1121.253.pyl] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Deretzi G, Gavalas E, Boziki M, Tsiptsios D, Polyzos SA, Venizelos I, Zavos C, Koutlas E, Tsiptsios I, Katsinelos P, Kountouras J. Impact of Helicobacter pylori on multiple sclerosis-related clinically isolated syndrome. Acta Neurol Scand 2016; 133:268-75. [PMID: 26079721 DOI: 10.1111/ane.12453] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/26/2015] [Indexed: 12/11/2022]
Abstract
OBJECTIVES There are no data regarding the relationship between Helicobacter pylori infection (Hp-I) and clinically isolated syndrome (CIS) suggestive of multiple sclerosis. The purpose of this pilot study was to investigate the association between active Hp-I, confirmed by histology, and CIS and to evaluate the impact of Hp eradication on the CIS clinical course. MATERIAL AND METHODS We conducted a study on 48 patients with CIS and 20 matched controls. At baseline, apart from histology, serum anti-Hp-specific IgG titer, inflammatory mediators, and HLA-A, HLA-B, HLA-DR genetic polymorphisms were estimated. Hp-positive patients received standard triple eradication regimen, and all patients were followed up for 2 years. RESULTS The prevalence of Hp-I was significantly higher in patients with CIS (43/48, 89.6%) than in control (10/20, 50%) (P < 0.001, OR: 8.6, 95% CI: 2.4-30.8). When compared with controls, patients with CIS also showed significantly higher serum anti-Hp IgG titer and HLA-A26, HLA-A30, and HLA-B57 frequencies. Hp-positive patients also showed higher serum concentrations of inflammatory cytokines and homocysteine. At 2-year clinical endpoint, in the subgroup of CIS patients with successful Hp eradication, the number of patients who presented with a second episode was significantly lower accompanied by significant improvement in mean Expanded Disability Status Scale score. CONCLUSIONS Hp-I seems more frequent in a Greek CIS cohort and its eradication might delay CIS progression, suggesting a possible link between Hp-I and CIS.
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Mavroudis N, Rafailidis S, Symeonidis N, Aimoniotou E, Antonopoulos V, Evgenidis N, Venizelos I, Sakadamis A. Carcinoid of the Ampulla of Vater-Report of two Cases. Acta Chir Belg 2016. [DOI: 10.1080/00015458.2005.11679703] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Sousos N, Vlachaki E, Anastasiadou K, Boura P, Venizelos I, Chatzimavroudis G, Katsinelos P. Diffuse gastric plasmacytoma involvement in multiple myeloma. Endoscopy 2016; 47 Suppl 1 UCTN:E197. [PMID: 26062145 DOI: 10.1055/s-0034-1377537] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
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Kountouras J, Tsiaousi E, Trigonis S, Polyzos SA, Katsinelos P, Zavos C, Vardaka E, Kountouras C, Gavalas E, Anastasiadou K, Vlachaki E, Boziki M, Zeglinas C, Venizelos I, Deretzi G. Comment on "The correlation of Helicobacter pylori with the development of cholelithiasis and cholecystitis: the results of a prospective clinical study in Saudi Arabia". EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2016; 20:3-4. [PMID: 26813445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Kalogiannidis I, Stavrakis T, Dagklis T, Petousis S, Nikolaidou C, Venizelos I, Rousso D. A clinicopathological study of atypical leiomyomas: Benign variant leiomyoma or smooth-muscle tumor of uncertain malignant potential. Oncol Lett 2015; 11:1425-1428. [PMID: 26893755 DOI: 10.3892/ol.2015.4062] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Accepted: 06/25/2015] [Indexed: 12/17/2022] Open
Abstract
Atypical leiomyomas are histopathologically recognized by moderate to severe pleomorphic atypical tumor cells showing low mitotic counts without coagulative tumor cell necrosis. The histopathological features and clinical behavior of these tumors are unclear. The surgical management of these lesions includes myomectomy and hysterectomy. The current study presents 5 cases of women with atypical leiomyomas that were managed surgically. The clinicopathological characteristics of the patients and recurrences were analyzed. The median age of the patients was 43 years old. While 3 out of 5 patients were treated by hysterectomy (with or without salpingo-oophorectomy), the remaining 2 patients were treated by myomectomy. The median mitotic index was 3 mitotic figures/10 high-power fields. The post-operative course of all patients was uneventful, and there was no evidence of local or distant recurrence in a median follow-up time of 72 months. The treatment of choice for atypical leiomyomas is hysterectomy. However, myomectomy may be an option for fertility sparing cases. A thorough consultation with regard to the uncertain behavior of such tumors and a rigorous follow-up must be offered in such patients.
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Gavalas E, Kountouras J, Boziki M, Zavos C, Polyzos SA, Vlachaki E, Venizelos I, Tsiptsios D, Deretzi G. Relationship between Helicobacter pylori infection and multiple sclerosis. Ann Gastroenterol 2015; 28:353-356. [PMID: 26126617 PMCID: PMC4480172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 12/01/2014] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Recent data indicate the presence of immunomodulating properties of Helicobacter pylori (Hp) (Hp Sydney Strain-1 antigen) in an experimental model of multiple sclerosis (MS), and there are limited contradictory epidemiologic data regarding Hp serology in MS patients. METHODS The aim of this prospective, comparative study was to validate the incidence of active Hp infection by histology and the endoscopic abnormalities, in 44 patients with relapsing-remitting MS and 20 anemic controls. RESULTS The overall prevalence of histologically confirmed active Hp infection in 44 MS patients was 86.4% vs. 50% in 20 matched anemic control participants (P=0.002, odds ratio 6.33, 95%CI 1.85-21.64). Concomitant diseases of autoimmune origin including hypothyroidism and ulcerative colitis were exclusively present in MS patients. Moreover, a trend of increased presence of pathological endoscopic findings such as hiatus hernia, Barrett's esophagus and duodenal ulcer disease was observed in MS patients compared with controls; Barrett's esophagus and duodenal ulcers were exclusively observed in MS patients. Likewise, Hp (+) MS patients showed exclusive presence of hiatus hernia, esophagitis and duodenal ulcer disease compared with Hp (-) MS patients. CONCLUSION Hp infection appears to be more frequent in MS patients. If confirmed, this might indicate either a common factor that causes susceptibilities to both MS and Hp infection or that Hp might be a causal factor for developing MS. If a causal link between Hp infection and MS is confirmed in the future, this may have a major impact on the pathophysiology and management of MS.
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Baltatzis M, Pavlidis TE, Ouroumidis O, Koliakos G, Nikolaidou C, Venizelos I, Michopoulou A, Sakantamis A. Aprotinin reduces oxidative stress induced by pneumoperitoneum in rats. J Surg Res 2014; 189:238-48. [PMID: 24674839 DOI: 10.1016/j.jss.2014.02.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 02/17/2014] [Accepted: 02/20/2014] [Indexed: 02/08/2023]
Abstract
BACKGROUND Ischemia-reperfusion injury induced by pneumoperitoneum is a well-studied entity, which increases oxidative stress during laparoscopic operations. The reported anti-inflammatory action of aprotinin was measured in a pneumoperitoneum model in rats for the first time in this study. MATERIALS AND METHODS A total of 60 male Albino Wistar rats were used in our protocol. Prolonged pneumoperitoneum (4 h) was applied, causing splanchnic ischemia and a period of reperfusion with a duration of 60 or 180 min followed. Several cytokines and markers of oxidative stress were measured in liver, small intestine, and lungs to compare the aprotinin group with the control group. Tissue inflammation was also evaluated and compared between groups using a five-scaled histopathologic score. RESULTS In aprotinin group values of biochemical markers (tumor necrosis factor α, interleukin 6, endothelin 1, C reactive protein, pro-oxidant-antioxidant balance, and carbonyl proteins) were lower in all tissues studied. Statistical significance was greater in liver and lungs (P < 0.05). Histopathologic examination revealed significant difference between control and aprotinin groups in all tissues examined. Aprotinin groups showed mild to moderate lesions, while in control groups severe to very severe inflammation was present. Aprotinin subgroup with prolonged reperfusion period (180 min) showed milder lesions in all tissues than the rest of the groups. CONCLUSIONS Aprotinin reduced inflammatory response and oxidative stress induced by pneumoperitoneum in liver, small intestine, and lungs.
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Kountouras J, Kapetanakis N, Zavos C, Polyzos SA, Kouklakis G, Venizelos I, Nikolaidou C, Tzilves D, Paikos D, Katsinelos P, Giouleme O, Soufleris K. Active Helicobacter pylori infection is associated with colorectal mucosa-adenomatous polyp--early and advanced adenocarcinoma sequence. Scand J Gastroenterol 2014; 49:381-2. [PMID: 24299055 DOI: 10.3109/00365521.2013.869351] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Kountouras J, Kapetanakis N, Zavos C, Polyzos SA, Romiopoulos I, Tsiaousi E, Anastasiadou K, Giorgakis N, Vardaka E, Nikolaidou C, Venizelos I, Katsinelos P. Helicobacter pylori might contribute to cancer and/or bone marrow-derived stem cell-related gastrointestinal oncogenesis. Oncogene 2014; 34:670. [PMID: 24469039 DOI: 10.1038/onc.2013.602] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Ioannou M, Pyrpasopoulou A, Simos G, Paraskeva E, Nikolaidou C, Venizelos I, Koukoulis G, Aslanidis S, Douma S. Upregulation of VEGF expression is associated with accumulation of HIF-1α in the skin of naïve scleroderma patients. Mod Rheumatol 2014. [DOI: 10.3109/s10165-012-0787-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Kountouras J, Kapetanakis N, Zavos C, Polyzos SA, Vardaka E, Katsinelos P, Romiopoulos I, Anastasiadou K, Giorgakis N, Nikolaidou C, Venizelos I. Helicobacter pylori and Colorectal Cancer Risk—Letter. Cancer Epidemiol Biomarkers Prev 2013; 23:365. [DOI: 10.1158/1055-9965.epi-13-1008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Ioannou M, Pyrpasopoulou A, Simos G, Paraskeva E, Nikolaidou C, Venizelos I, Koukoulis G, Aslanidis S, Douma S. AB0246 Upregulation of VEGF expression is associated with accumulation of HIF-1A in the skin of scleroderma patients. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Kountouras J, Kapetanakis N, Zavos C, Romiopoulos I, Polyzos SA, Tsiaousi E, Michael S, Vardaka E, Nikolaidou C, Venizelos I, Katsinelos P. Impact of Helicobacter pylori Infection on colon oncogenesis. Am J Gastroenterol 2013; 108:625-6. [PMID: 23552319 DOI: 10.1038/ajg.2013.17] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Kountouras J, Zavos C, Deretzi G, Vardaka E, Boziki M, Gavalas E, Kouklakis G, Katsinelos P, Venizelos I, Nikolaidou C, Polyzos SA, Giartza-Taxidou E. Helicobacter pylori induced cognitive dysfunction might be associated with falls and fractures in cirrhosis. Hepatology 2013; 57:1284. [PMID: 22745033 DOI: 10.1002/hep.25926] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/04/2012] [Indexed: 01/06/2023]
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25
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Kapetanakis N, Kountouras J, Zavos C, Anastasiadou K, Tsarouchas G, Michael S, Gavalas E, Tsiaousi E, Polyzos SA, Venizelos I, Nikolaidou C, Vardaka E. Potential oncogenic properties of mobilized stem cells in a subpopulation of inflammatory bowel disease patients infected with Helicobacter pylori. Inflamm Bowel Dis 2013; 19:E27-9. [PMID: 22344973 DOI: 10.1002/ibd.22911] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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