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Zoi V, Kyritsis AP, Galani V, Lazari D, Sioka C, Voulgaris S, Alexiou GA. The Role of Curcumin in Cancer: A Focus on the PI3K/Akt Pathway. Cancers (Basel) 2024; 16:1554. [PMID: 38672636 PMCID: PMC11048628 DOI: 10.3390/cancers16081554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 04/11/2024] [Accepted: 04/15/2024] [Indexed: 04/28/2024] Open
Abstract
Cancer is a life-threatening disease and one of the leading causes of death worldwide. Despite significant advancements in therapeutic options, most available anti-cancer agents have limited efficacy. In this context, natural compounds with diverse chemical structures have been investigated for their multimodal anti-cancer properties. Curcumin is a polyphenol isolated from the rhizomes of Curcuma longa and has been widely studied for its anti-inflammatory, anti-oxidant, and anti-cancer effects. Curcumin acts on the regulation of different aspects of cancer development, including initiation, metastasis, angiogenesis, and progression. The phosphatidylinositol-3-kinase (PI3K)/protein kinase B (AKT) pathway is a key target in cancer therapy, since it is implicated in initiation, proliferation, and cancer cell survival. Curcumin has been found to inhibit the PI3K/Akt pathway in tumor cells, primarily via the regulation of different key mediators, including growth factors, protein kinases, and cytokines. This review presents the therapeutic potential of curcumin in different malignancies, such as glioblastoma, prostate and breast cancer, and head and neck cancers, through the targeting of the PI3K/Akt signaling pathway.
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Affiliation(s)
- Vasiliki Zoi
- Neurosurgical Institute, University of Ioannina, 45500 Ioannina, Greece
| | | | - Vasiliki Galani
- Department of Anatomy Histology-Embryology, School of Medicine, University of Ioannina, 45500 Ioannina, Greece
| | - Diamanto Lazari
- Laboratory of Pharmacognosy, Faculty of Health Sciences, School of Pharmacy, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Chrissa Sioka
- Neurosurgical Institute, University of Ioannina, 45500 Ioannina, Greece
| | - Spyridon Voulgaris
- Neurosurgical Institute, University of Ioannina, 45500 Ioannina, Greece
- Department of Neurosurgery, University of Ioannina, 45500 Ioannina, Greece
| | - Georgios A. Alexiou
- Neurosurgical Institute, University of Ioannina, 45500 Ioannina, Greece
- Department of Neurosurgery, University of Ioannina, 45500 Ioannina, Greece
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Papakonstantinou E, Athanasiadou KI, Markozannes G, Tzotzola V, Bouka E, Baka M, Moschovi M, Polychronopoulou S, Hatzipantelis E, Galani V, Stefanaki K, Strantzia K, Vousvouki M, Kourou P, Magkou E, Nikita M, Zambakides C, Michelarakis J, Alexopoulou A, Gavra M, Malama A, Ntzani EE, Petridou ET. Prognostic factors in high-grade pediatric osteosarcoma among children and young adults: Greek Nationwide Registry for Childhood Hematological Malignancies and Solid Tumors (NARECHEM-ST) data along with a systematic review and meta-analysis. Cancer Epidemiol 2024; 90:102551. [PMID: 38447251 DOI: 10.1016/j.canep.2024.102551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/28/2024] [Accepted: 02/29/2024] [Indexed: 03/08/2024]
Abstract
The 5-year overall survival of children and adolescents with osteosarcoma has been in plateau during the last 30 years. The present systematic review (1976-2023) and meta-analysis aimed to explore factors implicated in the prognosis of children and young adults with high-grade osteosarcoma. Original studies including patients ≤30 years and the Nationwide Registry for Childhood Hematological Malignancies and Solid Tumors (NARECHEM-ST) data (2010-2021) referred to children ≤14 years were analysed. Individual participant data (IPD) and summary estimates were used to assess the n-year survival rates, as well as the association of risk factors with overall survival (OS) and event-free survival (EFS). IPD and the n-year survival rates were pooled using Kaplan-Meier and Cox regression models, and random effects models, respectively. Data from 8412 patients, including 46 publications, NARECHEM-ST data, and 277 IPD from 10 studies were analysed. The summary 5-year OS rate was 64% [95% confidence interval (95%CI): 62%-66%, 37 studies, 6661 patients] and the EFS was 52% (95%CI: 49%-56%, 30 studies, 5010 patients). The survival rates generally differed in the pre-specified subgroups. Limb-salvage surgery showed a higher 5-year OS rate (69%) versus amputation (47%). Good responders had higher OS rates at 3 years (94%) and 5 years (81%), compared to poor responders at 3 years (66%), and 5 years (56%). Patients with metastatic disease had a higher risk of death [Hazard Ratio (HR): 3.60, 95%CI: 2.52, 5.15, 11 studies]. Sex did not have an impact on EFS (HR females/males: 0.90, 95%CI: 0.54, 1.48, 3 studies), whereas age>18 years seems to adversely affect EFS (HR 18+/<10 years: 1.36, 95%CI: 1.09, 1.86, 3 studies). Our results summarize the collective experience on prognostic factors of high-grade osteosarcoma among children and young adults. Poor response to neoadjuvant chemotherapy and metastatic disease at diagnosis were confirmed as primary risk factors of poor outcome. International collaboration of osteosarcoma study groups is essential to improve survival.
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Affiliation(s)
- Evgenia Papakonstantinou
- Department of Pediatric Oncology, Ippokratio General Hospital, 49 Konstantinoupoleos Street, Thessaloniki 54642, Greece.
| | - Kleoniki I Athanasiadou
- Endocrine Unit and Diabetes Centre, Department of Clinical Therapeutics, Alexandra Hospital, School of Medicine, National and Kapodistrian University of Athens, 80 Vasilisis Sophias Avenue, Athens 11528, Greece.
| | - Georgios Markozannes
- Department of Hygiene and Epidemiology, School of Medicine, University of Ioannina, Ioannina, Greece
| | - Vassiliki Tzotzola
- Department of Pediatric Hematology-Oncology (TAO), Aghia Sophia Children's Hospital, Thivon and Livadias, Goudi, Athens 11527, Greece
| | - Evdoxia Bouka
- Hellenic Society for Social Pediatrics and Health Promotion, Athens, Greece
| | - Margarita Baka
- Department of Oncology, "Pan. & Agl. Kyriakou", Thivon and Papadiamantopoulou Str, Athens 11527, Greece
| | - Maria Moschovi
- Haematology-Oncology Unit, First Department of Pediatrics, Athens University Medical School, Aghia Sophia Children's Hospital, Thivon and Levadias, Goudi, Athens 11527, Greece.
| | - Sophia Polychronopoulou
- Department of Pediatric Hematology-Oncology (TAO), Aghia Sophia Children's Hospital, Thivon and Livadias, Goudi, Athens 11527, Greece.
| | - Emmanuel Hatzipantelis
- Children's & Adolescents Hematology-Oncology Unit, 2nd Paediatric Department, School of Medicine, Aristotle University of Thessaloniki, Greece.
| | - Vasiliki Galani
- Paediatric and Adolescent Oncology Clinic, Children's Hospital "MITERA", Athens, Greece
| | - Kalliopi Stefanaki
- Histopathology Department, Aghia Sophia Children's Hospital, Thivon and Levadias, Goudi, Athens 11527, Greece.
| | - Katerina Strantzia
- Histopathology Department, "Pan. & Agl. Kyriakou" Children's Hospital, Thivon and Papadiamantopoulou Str, Athens 11527, Greece
| | - Maria Vousvouki
- Childhood & Adolescent Hematology Oncology Unit, 2nd Pediatric Department, Faculty of Health Sciences, Aristotle University of Thessaloniki, AHEPA Hospital, Greece
| | - Panagiota Kourou
- Pediatric Hematology-Oncology Unit, First Department of Pediatrics, Thivon and Levadias, Goudi, Athens 11527, Greece
| | - Evgenia Magkou
- Department of Pediatric Hematology-Oncology, "Pan. & Agl. Kyriakou" Children's Hospital, Thivon and Papadiamantopoulou Str, Athens 11527, Greece
| | - Maria Nikita
- Department of Pediatric Hematology-Oncology, "Pan. & Agl. Kyriakou" Children's Hospital, Thivon and Papadiamantopoulou Str, Athens 11527, Greece
| | - Christos Zambakides
- 1st Orthopedic Clinic, "Pan. & Agl. Kyriakou" Children's Hospital, Thivon and Papadiamantopoulou Str, Athens 11527, Greece.
| | - John Michelarakis
- 2nd Orthopedic Clinic, "Pan. & Agl. Kyriakou" Children's Hospital, Thivon and Papadiamantopoulou Str, Athens 11527, Greece
| | - Aikaterini Alexopoulou
- Children's & Adolescents Radiotherapy Department, "Pan. & Agl. Kyriakou" Children's Hospital, Thivon and Papadiamantopoulou Str, Athens 11527, Greece
| | - Maro Gavra
- Department of Medical Imaging and Interventional Radiology, Aghia Sofia Children's Hospital, Thivon and Levadias, Goudi, Athens 11527, Greece
| | - Astero Malama
- Department of Medical Imaging and Interventional Radiology, Aghia Sofia Children's Hospital, Thivon and Levadias, Goudi, Athens 11527, Greece
| | - Evangelia E Ntzani
- Department of Hygiene and Epidemiology, School of Medicine, University of Ioannina, Ioannina 45110, Greece; Center for Evidence Synthesis in Health, Brown University School of Public Health, Providence, RI 02903, USA.
| | - Eleni Th Petridou
- Department of Hygiene, Epidemiology and Medical Statistics, School of Medicine, National and Kapodistrian University of Athens, 75 Mikras Asias Str, Athens 11527, Greece.
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Galani V, Gariani K, Haidar F, Compagnon P, Benzakour L, Prada P. [Diabetes and pancreas or islet transplantation: psychological issues]. Rev Med Suisse 2024; 20:338-341. [PMID: 38353433 DOI: 10.53738/revmed.2024.20.861.338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
Diabetes is a chronic and progressive disease that affects an increasing number of patients. The prevalence of associated psychological comorbidities is high and often requires the implementation of targeted psychological interventions. Pancreas or islet transplantation remains a therapeutic option to consider, for a part of patients with type 1 diabetes unstable disease or established complications. From the clinical indication to the waiting period for a transplantation, then to the postoperative and long-term care, the diabetic patient is found to experience perpetual changes that may test his adaptability. In this article, the psychological aspects of the pancreas or islet transplantation, as well as the role of a liaison psychiatrist in a transplantation unit will be discussed.
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Affiliation(s)
- Vasiliki Galani
- Unité de psychiatrie de liaison, Service de psychiatrie de liaison et d'intervention de crise, Département de psychiatrie, Hôpitaux universitaires de Genève, 1211 Genève 14
| | - Karim Gariani
- Service d'endocrinologie, diabétologie, nutrition et éducation thérapeutique du patient, Département de médecine, Hôpitaux universitaires de Genève, 1211 Genève 14
| | - Fadi Haidar
- Service de néphrologie et d'hypertension, Département de médecine, Hôpitaux universitaires de Genève, 1211 Genève 14
| | - Philippe Compagnon
- Service de transplantation, Département de chirurgie, Hôpitaux universitaires de Genève, 1211 Genève 14
| | - Lamyae Benzakour
- Unité de psychiatrie de liaison, Service de psychiatrie de liaison et d'intervention de crise, Département de psychiatrie, Hôpitaux universitaires de Genève, 1211 Genève 14
| | - Paco Prada
- Unité de psychiatrie de liaison, Service de psychiatrie de liaison et d'intervention de crise, Département de psychiatrie, Hôpitaux universitaires de Genève, 1211 Genève 14
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Papapetrou P, Dimitriadis K, Galani V, Zoi V, Giannakopoulou M, Papathanasopoulou VA, Sioka C, Tsekeris P, Kyritsis AP, Lazari D, Alexiou GA. Antitumor activity of 5-hydroxy-3',4',6,7-tetramethoxyflavone in glioblastoma cell lines and its antagonism with radiotherapy. Biomol Concepts 2024; 15:bmc-2022-0039. [PMID: 38345457 DOI: 10.1515/bmc-2022-0039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 01/18/2024] [Indexed: 02/15/2024] Open
Abstract
5-Hydroxy-3',4',6,7-tetramethoxyflavone (TMF) is a plant-origin flavone known for its anti-cancer properties. In the present study, the cytotoxic effect of TMF was evaluated in the U87MG and T98G glioblastoma (GBM) cell lines. The effect of TMF on cell viability was assessed with trypan blue exclusion assay and crystal violet staining. In addition, flow cytometry was performed to examine its effect on the different phases of the cell cycle, and in vitro scratch wound assay assessed the migratory capacity of the treated cells. Furthermore, the effect of in vitro radiotherapy was also evaluated with a combination of TMF and radiation. In both cell lines, TMF treatment resulted in G0/G1 cell cycle arrest, reduced cell viability, and reduced cell migratory capacity. In contrast, there was an antagonistic property of TMF treatment with radiotherapy. These results demonstrated the antineoplastic effect of TMF in GBM cells in vitro, but the antagonistic effect with radiotherapy indicated that TMF should be further evaluated for its possible antitumor role post-radiotherapy.
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Affiliation(s)
| | - Kyriakos Dimitriadis
- Laboratory of Pharmacognosy, School of Pharmacy, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Vasiliki Galani
- Department of Anatomy Histology-Embryology, School of Medicine, University of Ioannina, Ioannina, Greece
| | - Vasiliki Zoi
- Neurosurgical Institute, University of Ioannina, Ioannina, Greece
| | | | | | - Chrissa Sioka
- Neurosurgical Institute, University of Ioannina, Ioannina, Greece
| | - Pericles Tsekeris
- Department of Radiation Oncology, University of Ioannina, Ioannina, Greece
| | | | - Diamanto Lazari
- Laboratory of Pharmacognosy, School of Pharmacy, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - George A Alexiou
- Neurosurgical Institute, University of Ioannina, Ioannina, Greece
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Papadatos SS, Toliaki E, Kardatou ME, Galani V, Kalfountzos D. Water Drops All Over the Skin: Miliaria Crystallina in an Adult Febrile Patient with Glioblastoma. Maedica (Bucur) 2023; 18:534-536. [PMID: 38023754 PMCID: PMC10674132 DOI: 10.26574/maedica.2023.18.3.534] [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] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
Miliaria crystallina is a skin condition occurring due to the blockage of sweat ducts and the retention of sweat. It typically presents as fragile, clear fluid-filled vesicles on the skin surface. Humidity and heat are the main causative factors. The condition is self-limited and remission is promoted by keeping the affected areas cool, well-ventilated and dry. Miliaria crystallina is common in infants and children but rare in adults. We present a case of a febrile hospitalized adult patient who developed the characteristic rash, in order to raise awareness of clinicians and young doctors.
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Affiliation(s)
- Stamatis S Papadatos
- Internal Medicine Department, Spiliopoulio - "Aghia Eleni" Hospital of Athens, Greece
- Department of Anatomy - Histology - Embryology, University of Ioannina School of Medicine, Greece
| | - Eleftheria Toliaki
- Internal Medicine Department, Spiliopoulio - "Aghia Eleni" Hospital of Athens, Greece
| | - Maria-Eleni Kardatou
- Internal Medicine Department, Spiliopoulio - "Aghia Eleni" Hospital of Athens, Greece
| | - Vasiliki Galani
- Department of Anatomy - Histology - Embryology, University of Ioannina School of Medicine, Greece
| | - Dimitrios Kalfountzos
- Internal Medicine Department, Spiliopoulio - "Aghia Eleni" Hospital of Athens, Greece
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Seretis K, Klaroudas A, Galani V, Papathanakos G, Varouktsi A, Mitselou A, Batistatou A, Lampri E. Pleomorphic dermal sarcoma: it might be rare but it exists. J Surg Case Rep 2023; 2023:rjad374. [PMID: 37545789 PMCID: PMC10401320 DOI: 10.1093/jscr/rjad374] [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: 05/29/2023] [Accepted: 06/11/2023] [Indexed: 08/08/2023] Open
Abstract
Pleomorphic dermal sarcoma (PDS) is a rare mesenchymal tissue tumor. Its differential diagnosis from similar tumors, such as low differentiated squamous cell carcinoma, fibrosarcoma, desmoplastic melanoma, atypical fibroxanthoma (AFX), may be difficult, as they have similar clinical and histological presentation. We present a case of an 83-year-old man exhibiting an exophytic scalp lesion. Excision of the lesion was performed, ensuring clear surgical margins and pathologic examination revealed an invasive pleomorphic dermal sarcoma. This case highlights a rare case of a large pleomorphic dermal sarcoma, and it discusses the histological, molecular features, its differential diagnosis and management of PDS.
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Affiliation(s)
| | - Antonios Klaroudas
- Department of Anatomy-Histology-Embryology, School of Medicine University of Ioannina, Greece
| | - Vasiliki Galani
- Correspondence address. Department of Anatomy-Histology-Embryology, School of Medicine University of Ioannina, Greece. E-mail:
| | | | - Anna Varouktsi
- Department of Internal Medicine, Ippokrateio Hospital, Thessalonνki, Greece
| | - Antigoni Mitselou
- Department of Forensic Pathology, Medical School University of Ioannina, Greece
| | - Anna Batistatou
- Department of Pathology, Medical School University of Ioannina, Greece
| | - Evangeli Lampri
- Department of Pathology, Medical School University of Ioannina, Greece
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Galani V, Villard O, Olivier V, Peloso A, Compagnon P, Haidar F, Prada P. Psychological care of patients during the pancreas transplantation process: issues and prospects. Front Clin Diabetes Healthc 2023; 4:1205964. [PMID: 37492440 PMCID: PMC10364445 DOI: 10.3389/fcdhc.2023.1205964] [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] [Received: 04/14/2023] [Accepted: 06/19/2023] [Indexed: 07/27/2023]
Abstract
Pancreas transplantation for patients with type 1 diabetes is a therapeutic option when other treatments are not effective and physical complications occur. Psychological burden is prominent in patients, and non-adherence to treatment is often one manifestation of such difficulties. Time projection is an important factor affected by chronic disease. The prospect of transplantation has the potential to repair this disruption. It could re-establish a continuity in the patient's self and history, by connecting the future to a life that was only about past and present. Taking care of oneself, adhering to treatment, being part of a long-term therapeutic project and going through transplantation are all processes that need a good ability to self-project in time. This is specifically a domain of psychotherapeutic interventions. In this article, the psychological implications of pancreas transplantation for patients and caregivers alike will be discussed, as well as the role of the psychiatrist in the transplantation process.
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Affiliation(s)
- Vasiliki Galani
- Service of Liaison Psychiatry and Crisis Intervention, Department of Psychiatry, Geneva University Hospitals, Geneva, Switzerland
| | - Orianne Villard
- Departement of Endocrinology, Diabetes, and Nutrition, Montpellier University Hospital, Montpellier, France
| | - Valérie Olivier
- Division of Nephrology and Hypertension, Department of Medicine, Geneva University Hospitals, Geneva, Switzerland
| | - Andrea Peloso
- Division of Transplantation, Department of Surgery, Geneva University Hospitals, Geneva, Switzerland
| | - Philippe Compagnon
- Division of Transplantation, Department of Surgery, Geneva University Hospitals, Geneva, Switzerland
| | - Fadi Haidar
- Division of Nephrology and Hypertension, Department of Medicine, Geneva University Hospitals, Geneva, Switzerland
- Division of Transplantation, Department of Surgery, Geneva University Hospitals, Geneva, Switzerland
| | - Paco Prada
- Service of Liaison Psychiatry and Crisis Intervention, Department of Psychiatry, Geneva University Hospitals, Geneva, Switzerland
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Zoi V, Papagrigoriou T, Tsiftsoglou OS, Alexiou GA, Giannakopoulou M, Tzima E, Tsekeris P, Zikou A, Kyritsis AP, Lazari D, Galani V. Therapeutic Potential of Linearol in Combination with Radiotherapy for the Treatment of Glioblastoma In Vitro. Int J Mol Sci 2023; 24:ijms24043760. [PMID: 36835175 PMCID: PMC9958920 DOI: 10.3390/ijms24043760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/03/2023] [Accepted: 02/08/2023] [Indexed: 02/16/2023] Open
Abstract
Glioblastoma is one of the most malignant and lethal forms of primary brain tumors in adults. Linearol, a kaurane diterpene isolated from different medicinal plants, including those of the genus Sideritis, has been found to possess significant anti-oxidant, anti-inflammatory and anti-microbial properties. In this study, we aimed to determine whether linearol could exhibit anti-glioma effects when given alone or in combination with radiotherapy in two human glioma cell lines, U87 and T98. Cell viability was examined with the Trypan Blue Exclusion assay, cell cycle distribution was tested with flow cytometry, and the synergistic effects of the combination treatment were analyzed with CompuSyn software. Linearol significantly suppressed cell proliferation and blocked cell cycle at the S phase. Furthermore, pretreatment of T98 cells with increasing linearol concentrations before exposure to 2 Gy irradiation decreased cell viability to a higher extent than linearol or radiation treatment alone, whereas in the U87 cells, an antagonistic relationship was observed between radiation and linearol. Moreover, linearol inhibited cell migration in both tested cell lines. Our results demonstrate for the first time that linearol is a promising anti-glioma agent and further studies are needed to fully understand the underlying mechanism of this effect.
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Affiliation(s)
- Vasiliki Zoi
- Neurosurgical Institute, University of Ioannina, 45500 Ioannina, Greece
- Department of Anatomy Histology-Embryology, School of Medicine, University of Ioannina, 45110 Ioannina, Greece
| | - Theodora Papagrigoriou
- Laboratory of Pharmacognosy, School of Pharmacy, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Olga S. Tsiftsoglou
- Laboratory of Pharmacognosy, School of Pharmacy, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - George A. Alexiou
- Neurosurgical Institute, University of Ioannina, 45500 Ioannina, Greece
- Department of Neurosurgery, University of Ioannina, 45110 Ioannina, Greece
| | - Maria Giannakopoulou
- Neurosurgical Institute, University of Ioannina, 45500 Ioannina, Greece
- Department of Anatomy Histology-Embryology, School of Medicine, University of Ioannina, 45110 Ioannina, Greece
| | - Eftychia Tzima
- Department of Radiation Oncology, University of Ioannina, 45110 Ioannina, Greece
| | - Pericles Tsekeris
- Department of Radiation Oncology, University of Ioannina, 45110 Ioannina, Greece
| | - Anastasia Zikou
- Department of Radiology, University of Ioannina, 45110 Ioannina, Greece
| | | | - Diamanto Lazari
- Laboratory of Pharmacognosy, School of Pharmacy, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Vasiliki Galani
- Department of Anatomy Histology-Embryology, School of Medicine, University of Ioannina, 45110 Ioannina, Greece
- Correspondence:
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Giannakopoulou M, Dimitriadis K, Koromili M, Zoi V, Vartholomatos E, Galani V, Kyritsis AP, Alexiou GA, Lazari D. Siderol Inhibits Proliferation of Glioblastoma Cells and Acts Synergistically with Temozolomide. Biomedicines 2022; 10:biomedicines10123216. [PMID: 36551972 PMCID: PMC9775304 DOI: 10.3390/biomedicines10123216] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 12/03/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022] Open
Abstract
Glioblastoma (GBM) is the most aggressive primary central nervous system (CNS) tumor in adults with dismal prognosis. Currently, the therapeutic interventions include gross total resection, when possible, followed by radiotherapy and chemotherapy. However, despite treatment, tumor usually recurs within 7-9 months. The presence of glioma cells with stem-like properties and tumor's heterogeneity have been identified as the most important factors driving recurrence. Recently, research efforts have been focused on the use of natural substances as treatment for GBM. Siderol is an ent-kaurane diterpenoid, isolated from the genus Sideritis. Sideritis extracts have already been investigated for their anti-inflammatory, antioxidant, and anticancer effects. In this study, we investigated the antitumoral effects of siderol in GBM T98 and U87 cell lines, as well as the effects of combined treatment with temozolomide (TMZ). Cell viability was evaluated by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and trypan blue exclusion assay. Different concentrations of siderol were used in order to calculate the IC50 values at 72 h after treatment. Flow cytometry used for the DNA cell cycle analysis after treatment with siderol in concentrations of IC50 and twice the IC50 values for 72 h. Furthermore, the effect of siderol in cell's migratory ability was tested using wound healing assay. Cell viability and proliferation, after combined treatment with siderol and TMZ, also were evaluated with the trypan blue exclusion assay and the effects of the combination treatment were analyzed with CompuSyn software. Treatment with siderol significantly reduced cell viability in T98 and U87 cell lines in a dose-dependent manner and IC50 values were calculated, 18 μM and 13 μM, respectively. Moreover, siderol induced G0/G1 cell cycle arrest in a dose-dependent manner and inhibited the migration in both cell lines. In addition, siderol and TMZ seem to have synergistic action in the majority of tested concentrations in both T98 and U87 cells. In conclusion, siderol may represent an innovative strategy for the treatment of GBM, and further studies are needed on siderol's efficacy and mode of action.
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Affiliation(s)
| | - Kiriakos Dimitriadis
- Laboratory of Pharmacognosy, Division of Pharmacognosy-Pharmacology, School of Pharmacy, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Maria Koromili
- Laboratory of Pharmacognosy, Division of Pharmacognosy-Pharmacology, School of Pharmacy, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Vasiliki Zoi
- Neurosurgical Institute, University of Ioannina, 45500 Ioannina, Greece
| | | | - Vasiliki Galani
- Department of Anatomy Histology-Embryology, School of Medicine, University of Ioannina, 45110 Ioannina, Greece
| | - Athanassios P. Kyritsis
- Neurosurgical Institute, University of Ioannina, 45500 Ioannina, Greece
- Correspondence: ; Tel.: +30-2651007220
| | - George A. Alexiou
- Neurosurgical Institute, University of Ioannina, 45500 Ioannina, Greece
- Department of Neurosurgery, University of Ioannina, 45500 Ioannina, Greece
| | - Diamanto Lazari
- Laboratory of Pharmacognosy, Division of Pharmacognosy-Pharmacology, School of Pharmacy, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
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Chytas V, Costanza A, Mazzola V, Luthy C, Galani V, Bondolfi G, Cedraschi C. Possible Contribution of Meaning in Life in Patients With Chronic Pain and Suicidal Ideation: Observational Study. JMIR Form Res 2022; 6:e35194. [PMID: 35699974 PMCID: PMC9237781 DOI: 10.2196/35194] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 03/06/2022] [Accepted: 04/10/2022] [Indexed: 11/13/2022] Open
Abstract
Background Chronic pain is associated with an elevated risk of suicidal ideation (SI). Objective We aimed to examine if the presence or the search for Meaning in Life (MiL) are associated with less SI and explore whether MiL profiles emerge in our cohort. These profiles can be described as high presence–high search, high presence–low search, low presence–low search, and low presence–high search. Methods In this observational study, we recruited 70 patients who were referred to the Multidisciplinary Pain Center of the Geneva University Hospitals and who answered positively to question 9 on the Beck Depression Inventory, 2nd Edition, investigating SI. Patients who agreed to participate in the study were further investigated; they participated in a structured diagnostic interview to screen for psychiatric diagnoses. During this interview, they completed the Meaning in Life Questionnaire and the semistructured Scale for Suicide Ideation (SSI) to assess the characteristics and severity of SI. Results There was a statistically significant correlation between the presence of MiL subscale and the SSI. These 2 scales had a negative and statistically highly significant correlation (R=–.667; P<.001). The results also showed a negative and statistically highly significant correlation between the score of the search for MiL and the SSI (R=–.456; P<.001). The results thus pointed to the presence of MiL as a potential protective factor against the severity of SI, while the search for MiL is also a possible resiliency factor, although to a lesser extent. The profile low presence–low search grouped the vast majority (47%) of the patients; in these patients, the mean SSI score was 14.36 (SD 5.86), much higher compared with that of the other subgroups. Conclusions This study’s results point to MiL as a concept of interest regarding devising psychotherapeutic interventions for chronic pain patients in order to reduce the suicidal risk and more accurately determine patients’ suffering.
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Affiliation(s)
- Vasileios Chytas
- Department of Psychiatry, Service of Liaison Psychiatry and Crisis Intervention, Geneva University Hospitals, Geneva, Switzerland
| | - Alessandra Costanza
- Department of Psychiatry, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Faculty of Biomedical Sciences, Università della Svizzera Italiana, Lugano, Switzerland
| | - Viridiana Mazzola
- Department of Psychiatry, Service of Liaison Psychiatry and Crisis Intervention, Geneva University Hospitals, Geneva, Switzerland
| | - Christophe Luthy
- Division of General Medical Rehabilitation, Geneva University Hospitals, Geneva, Switzerland
- Department of Geriatrics and Rehabilitation, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Vasiliki Galani
- Department of Psychiatry, Service of Liaison Psychiatry and Crisis Intervention, Geneva University Hospitals, Geneva, Switzerland
| | - Guido Bondolfi
- Department of Psychiatry, Service of Liaison Psychiatry and Crisis Intervention, Geneva University Hospitals, Geneva, Switzerland
- Department of Psychiatry, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Christine Cedraschi
- Division of General Medical Rehabilitation, Geneva University Hospitals, Geneva, Switzerland
- Department of Geriatrics and Rehabilitation, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Division of Clinical Pharmacology and Toxicology, Multidisciplinary Pain Centre, Geneva University Hospitals, Geneva, Switzerland
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Galani V, Besson M, Le Hénaff C, Chytas V, Prada P. [When the discontinuation of psychotropic drugs is necessary: clinical manifestations and therapeutic approach]. Rev Med Suisse 2022; 18:276-281. [PMID: 35188352 DOI: 10.53738/revmed.2022.18.769.276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The reduction or suspension of psychotropic treatment may be necessary for various medical reasons. This can have serious consequences for patients, including clinical manifestations, both physical and psychological. These manifestations, which are often unpleasant, can compromise care during hospitalization and undermine the therapeutic alliance. Their early detection, readjustment of treatment, when necessary, as well as regular communication with the patient and among specialists are important tips to take into account from caregivers.
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Affiliation(s)
- Vasiliki Galani
- Service de psychiatrie de liaison et d'intervention de crise, Département de santé mentale et de psychiatrie, Hôpitaux universitaires de Genève, 1211 Genève 14
| | - Marie Besson
- Service de pharmacologie et de toxicologie cliniques, Centre multidisciplinaire de la douleur, Hôpitaux universitaires de Genève, 1211 Genève 14
| | - Catherine Le Hénaff
- Service de psychiatrie de liaison et d'intervention de crise, Département de santé mentale et de psychiatrie, Hôpitaux universitaires de Genève, 1211 Genève 14
| | - Vasileios Chytas
- Service de psychiatrie de liaison et d'intervention de crise, Département de santé mentale et de psychiatrie, Hôpitaux universitaires de Genève, 1211 Genève 14
| | - Paco Prada
- Service de psychiatrie de liaison et d'intervention de crise, Département de santé mentale et de psychiatrie, Hôpitaux universitaires de Genève, 1211 Genève 14
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Stefanou SK, Koulas S, Stefanou CK, Tepelenis K, Paxinos AK, Tsiantis T, Galani V, Vlachos K. Tissue dissection with saline injection: application in thyroid surgery. J Surg Case Rep 2021; 2021:rjab500. [PMID: 34909164 PMCID: PMC8666156 DOI: 10.1093/jscr/rjab500] [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: 05/15/2021] [Accepted: 10/19/2021] [Indexed: 11/25/2022] Open
Abstract
Postoperative hypoparathyroidism is a thyroidectomy complication. The effect of this complication cannot be accurately quantified. The incidence of hypoparathyroidism after total thyroidectomy has high variability in the literature, between 7 and 37%. Data from 78 patients who underwent total thyroidectomy with Tissue Dissection with Solution Injection (TDSI group) from December 2018 to August 2019 were retrospectively reviewed. These patients were compared with 78 patients to whom the technique was not applied (non-TDSI group), and they were treated from January 2018 to September 2018. All thyroidectomies were performed by the same surgeon. The mean duration of a thyroidectomy was 1 hour. The reduction of the incidence of postoperative hypoparathyroidism in the group of patients was applied in respect of the technique of tissue dissection with saline injection. TDSI technique paves the way for further application to other tissues and surgeries.
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Affiliation(s)
| | - Spyros Koulas
- Department of Surgery, General Hospital “G. Hatzikosta,” Ioannina, Greece
| | - Christos K Stefanou
- Correspondence address. Department of Surgery, General Hospital of Filiates, Ioannina 46300, Greece. Tel: +306942071910; E-mail:
| | - Kostas Tepelenis
- Department of Surgery, University Hospital of Ioannina, Ioannina, Greece
| | | | - Thomas Tsiantis
- Department of Gynecology, University Hospital of Ioannina, Ioannina, Greece
| | - Vasiliki Galani
- Department of Anatomy-Histology-Embryology, Medical School, University of Ioannina, Ioannina, Greece
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13
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Mitselou A, Grammeniatis V, Varouktsi A, Papadatos SS, Klaroudas A, Katsanos K, Galani V. Immunohistochemical Study of Adhesion Molecules in Irritable Bowel Syndrome: A Comparison to Inflammatory Bowel Diseases. Adv Biomed Res 2021; 10:21. [PMID: 34703800 PMCID: PMC8495298 DOI: 10.4103/abr.abr_2_20] [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: 01/04/2020] [Revised: 08/12/2020] [Accepted: 04/03/2021] [Indexed: 11/17/2022] Open
Abstract
Background: The surface of endothelial cells is covered with cell adhesion molecules including E-selectin, intercellular adhesion molecule-1 (ICAM-1), and vascular cell adhesion molecule 1 (VCAM-1) that mediate the adhesion and extravasation of leukocytes and play a pivotal role in inflammatory response. The aim of this study was to investigate the role of expression of adhesion molecules in inflammatory bowel disease (IBD) patients, irritable bowel syndrome (IBS) patients, and normal colonic mucosa. Materials and Methods: IBS and IBD patients along with normal colonic mucosa were recruited in the study. In all groups, two biopsies were taken from each of the three anatomical sites (terminal ileum, cecum, and rectum). Three monoclonal antibodies, E-selectin mAb, VCAM-1 mAb, and ICAM-1 mAb, were applied for immunohistochemical analysis. Results: In IBD patients, the expression of intensity of E-selectin, VCAM-1, and ICAM-1 was found decreased, at least in cecum and rectum, in comparison with IBS patients and controls (P < 0.001, P < 0.005, and P < 0.007, respectively). Comparison of the expression of intensity of the aforementioned molecules in IBS patients and controls revealed significant augmentation at the cecum and rectum of IBS patients. Conclusions: The expression of adhesion molecules appeared lower in IBD patients compared to IBS patients and controls. In addition, the expression of adhesion molecules appeared higher in IBS compared to the control group. Therefore, it could be hypothesized that the expression of adhesion molecules could be considered as an early event in the process of proinflammatory IBS group and may be other factors play a crucial role in the process of intestinal inflammation in IBD patients.
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Affiliation(s)
- Antigony Mitselou
- Department of Forensic Pathology, Histology-Embryology, Medical School, University of Ioannina, Ioannina, Greece
| | | | - Anna Varouktsi
- Department of Internal Medicine, Ippokratio Hospital, Thessaloníki, Greece
| | - Stamatis S Papadatos
- 3rd Department of Internal Medicine, National and Kapodistrian University of Athens Medical School, Sotiria General Hospital, Athens, Greece
| | - Antonios Klaroudas
- Department of Anatomy, Histology-Embryology, Medical School, University of Ioannina, Ioannina, Greece
| | - Konstantinos Katsanos
- 1st Department of Internal Medicine and Hepato-Gastroenterology Unit, Medical School, University of Ioannina, Ioannina, Greece
| | - Vasiliki Galani
- 3rd Department of Internal Medicine, National and Kapodistrian University of Athens Medical School, Sotiria General Hospital, Athens, Greece
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Lianos GD, Alexiou GA, Rausei S, Galani V, Mitsis M, Kyritsis AP. Repurposing antipsychotic drugs for cancer treatment: current evidence and future perspectives. Expert Rev Anticancer Ther 2021; 22:131-134. [PMID: 34612130 DOI: 10.1080/14737140.2022.1987221] [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: 10/20/2022]
Affiliation(s)
- Georgios D Lianos
- Department of Surgery, University Hospital of Ioannina, Ioannina, Greece
| | - George A Alexiou
- Department of Neurosurgery, University Hospital of Ioannina, Ioannina, Greece
| | - Stefano Rausei
- Department of Surgery, ASST Valle Olona, Gallarate, Italy
| | - Vasiliki Galani
- Neurosurgical Institute, University of Ioannina, Ioannina, Greece
| | - Michail Mitsis
- Department of Surgery, University Hospital of Ioannina, Ioannina, Greece
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15
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Zoi V, Galani V, Lianos GD, Voulgaris S, Kyritsis AP, Alexiou GA. The Role of Curcumin in Cancer Treatment. Biomedicines 2021; 9:biomedicines9091086. [PMID: 34572272 PMCID: PMC8464730 DOI: 10.3390/biomedicines9091086] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [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: 07/27/2021] [Revised: 08/19/2021] [Accepted: 08/23/2021] [Indexed: 12/24/2022] Open
Abstract
Curcumin is a polyphenol extracted from the rhizomes of the turmeric plant, Curcuma longa which has anti-inflammatory, and anticancer properties. Chronic inflammation is associated with the development of cancer. Curcumin acts on the regulation of various immune modulators, including cytokines, cyclooxygenase-2 (COX-2), and reactive oxygen species (ROS), which partly explains its anticancer effects. It also takes part in the downregulation of growth factors, protein kinases, oncogenic molecules and various signaling pathways, such as nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), c-Jun N-terminal kinase (JNK) and signal transducer and activator of transcription 3 (STAT3) signaling. Clinical trials of curcumin have been completed or are ongoing for various types of cancer. This review presents the molecular mechanisms of curcumin in different types of cancer and the evidence from the most recent clinical trials.
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Affiliation(s)
- Vasiliki Zoi
- Neurosurgical Institute, School of Medicine, University of Ioannina, 45500 Ioannina, Greece; (V.Z.); (S.V.); (A.P.K.)
- Department of Anatomy Histology-Embryology, School of Medicine, University of Ioannina, 45500 Ioannina, Greece;
| | - Vasiliki Galani
- Department of Anatomy Histology-Embryology, School of Medicine, University of Ioannina, 45500 Ioannina, Greece;
| | - Georgios D. Lianos
- Department of Surgery, University Hospital of Ioannina, 45500 Ioannina, Greece;
| | - Spyridon Voulgaris
- Neurosurgical Institute, School of Medicine, University of Ioannina, 45500 Ioannina, Greece; (V.Z.); (S.V.); (A.P.K.)
- Department of Neurosurgery, School of Medicine Ioannina, University of Ioannina, 45500 Ioannina, Greece
| | - Athanasios P. Kyritsis
- Neurosurgical Institute, School of Medicine, University of Ioannina, 45500 Ioannina, Greece; (V.Z.); (S.V.); (A.P.K.)
| | - George A. Alexiou
- Neurosurgical Institute, School of Medicine, University of Ioannina, 45500 Ioannina, Greece; (V.Z.); (S.V.); (A.P.K.)
- Department of Neurosurgery, School of Medicine Ioannina, University of Ioannina, 45500 Ioannina, Greece
- Correspondence:
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16
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Tepelenis K, Stefanou CK, Stefanou SK, Tsoumanis P, Ntalapa KM, Galani V, Gogos-Pappas G, Vlachos K. Post-colonoscopy appendicitis: a case report. J Surg Case Rep 2021; 2021:rjab285. [PMID: 34276957 PMCID: PMC8279750 DOI: 10.1093/jscr/rjab285] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Accepted: 06/14/2021] [Indexed: 11/13/2022] Open
Abstract
Appendicitis after colonoscopy is rare, with an estimated incidence of 3.8 cases per 10 000 colonoscopies. Herein, we report a 56-year-old female who visited the emergency department with a history of diffuse abdominal pain and nausea 8 h after a screening colonoscopy. Abdominal examination disclosed deep tenderness at Mc Burney point and positive Rovsign's sign. Laboratory studies revealed elevated white blood cells and neutrophils (WBC 15.37 K/Ul and NEUT 86.5%) with normal C-reactive protein (5 mg/l). The initial diagnosis was acute appendicitis, which was confirmed by the ultrasonographic findings. The patient was admitted to the surgical department, and a laparoscopic appendectomy was performed. Post-colonoscopy appendicitis is increasingly recognized as a complication after colonoscopy in the last decade. Early recognition is vital in preventing morbidity and mortality. It may also be worthwhile to include appendicitis after colonoscopy as a possible complication during the consent before the procedure.
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Affiliation(s)
- Kostas Tepelenis
- Department of Surgery, University Hospital of Ioannina, Ioannina, Greece
| | - Christos K Stefanou
- Department of Surgery, General Hospital of Ioannina, "G. Xatzikosta", Ioannina, Greece
| | - Stefanos K Stefanou
- Department of Surgery, General Hospital of Ioannina, "G. Xatzikosta", Ioannina, Greece
| | - Periklis Tsoumanis
- Department of Ophthalmology, University Hospital of Ioannina, Ioannina, Greece
| | | | - Vasiliki Galani
- Department of Anatomy-Histology-Embryology, Medical School, University of Ioannina, Ioannina, Greece
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Galani V, Chytas V, Prada P. [To pretend or to really suffer ? Questions from caregivers about the factitious disorder]. Rev Med Suisse 2021; 17:297-302. [PMID: 33586374] [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: 06/12/2023]
Abstract
The diagnosis of factitious disorder can only emerge when caregivers are in difficulty in caring for their patient. This disorder is a real challenge for healthcare teams throughout the treatment, from its discovery to its treatment. Secrecy and self-inflicted injuries are components that we can be uncomfortable with as caregivers. The factitious problem requires well-coordinated care between the various specialists and often questions our practices. In this article we deal with the questions frequently asked by the care teams to the liaison psychiatrists that we are, by working on the identification of the problem in the clinic, the therapeutic issues and the attitude to adopt.
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Affiliation(s)
- Vasiliki Galani
- Service de psychiatrie de liaison et d'intervention de crise (SPLIC), Département de santé mentale et de psychiatrie, HUG, 1211 Genève 14
| | - Vasileios Chytas
- Service de psychiatrie de liaison et d'intervention de crise (SPLIC), Département de santé mentale et de psychiatrie, HUG, 1211 Genève 14
| | - Paco Prada
- Service de psychiatrie de liaison et d'intervention de crise (SPLIC), Département de santé mentale et de psychiatrie, HUG, 1211 Genève 14
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Papagiannitsis CC, Verra A, Galani V, Xitsas S, Bitar I, Hrabak J, Petinaki E. Unravelling the Features of Success of VIM-Producing ST111 and ST235 Pseudomonas aeruginosa in a Greek Hospital. Microorganisms 2020; 8:microorganisms8121884. [PMID: 33260774 PMCID: PMC7761518 DOI: 10.3390/microorganisms8121884] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 11/19/2020] [Accepted: 11/26/2020] [Indexed: 01/04/2023] Open
Abstract
The objective of this study was to analyze the characteristics that contribute to the successful dissemination of VIM-producing Pseudomonas aeruginosa (P. aeruginosa), belonging to ST111 and ST235, in a Greek hospital. A total of 120 non-repetitive P. aeruginosa, which had meropenem minimal inhibitory concentrations (MICs) greater than 2 mg/L, were studied. VIM-encoding genes were amplified and sequenced within their integrons. Isolates were typed by multilocus sequence typing (MLST). Six VIM-producers, representative of different integron structures and sequence types (STs), were completely sequenced using Illumina platform. Sixty-one P. aeruginosa were confirmed to produce VIM-type carbapenemases. ST111 dominated (n = 34) among VIM-producers, while 15 VIM-producers belonged to ST235. The blaVIM-like genes were located in three integron types, including In59, In595 and In1760, which were integrated into P. aeruginosa chromosomes. Whole genome sequencing (WGS) data demonstrated that ST111 and ST235 MBL producers carried several resistance and virulence genes. Additionally, the presence of type I-C and type I-E clustered regularly interspaced short palindromic repeats (CRISPR)/Cas locus was observed in ST235 and ST395 isolates, respectively. In conclusion, our findings confirmed the clonal spread of ST111 P. aeruginosa, carrying the VIM-2-encoding integron In59, in the University Hospital of Larissa (UHL). In addition, they highlighted the important role of high-risk clones, ST111 and ST235, in the successful dissemination and establishment into hospital settings of clinically important pathogens carrying resistance determinants.
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Affiliation(s)
- Costas C. Papagiannitsis
- Department of Microbiology, University Hospital of Larissa, 41110 Larissa, Greece; (A.V.); (V.G.); (S.X.); (E.P.)
- Correspondence: ; Tel.: +30-24-1350-2532
| | - Aggeliki Verra
- Department of Microbiology, University Hospital of Larissa, 41110 Larissa, Greece; (A.V.); (V.G.); (S.X.); (E.P.)
| | - Vasiliki Galani
- Department of Microbiology, University Hospital of Larissa, 41110 Larissa, Greece; (A.V.); (V.G.); (S.X.); (E.P.)
| | - Stelios Xitsas
- Department of Microbiology, University Hospital of Larissa, 41110 Larissa, Greece; (A.V.); (V.G.); (S.X.); (E.P.)
| | - Ibrahim Bitar
- Biomedical Center, Faculty of Medicine, Charles University, 32300 Pilsen, Czech Republic; (I.B.); (J.H.)
| | - Jaroslav Hrabak
- Biomedical Center, Faculty of Medicine, Charles University, 32300 Pilsen, Czech Republic; (I.B.); (J.H.)
| | - Efthymia Petinaki
- Department of Microbiology, University Hospital of Larissa, 41110 Larissa, Greece; (A.V.); (V.G.); (S.X.); (E.P.)
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Galani V, Papagiannitsis CC, Petinaki E. First description of ST409 OXA-23-producing Acinetobacter baumannii, carrying a CST8 CRISPR/Cas system, in Central Greece. J Glob Antimicrob Resist 2020; 22:137-138. [PMID: 32497618 DOI: 10.1016/j.jgar.2020.05.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 05/14/2020] [Indexed: 12/28/2022] Open
Affiliation(s)
- Vasiliki Galani
- Department of Microbiology, University Hospital of Larissa, Larissa, Greece
| | | | - Efi Petinaki
- Department of Microbiology, University Hospital of Larissa, Larissa, Greece.
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Mitselou A, Varouktsi A, Papadatos SS, Balasi E, Lampri E, Katsanos K, Galani V. Unusual abscess masquerading as poorly differentiated adenocarcinoma of the colon showing characteristics of choriocarcinoma. Autops Case Rep 2020; 10:e2020145. [PMID: 33344291 PMCID: PMC7703162 DOI: 10.4322/acr.2020.145] [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] [Indexed: 11/23/2022]
Abstract
Extragonadal non-gestational choriocarcinoma (ENC) is an uncommon malignant tumor occasionally found in the gastrointestinal tract. ENC is characterized by a biphasic tumor growth with distinct areas of adenocarcinoma and choriocarcinoma differentiation. Primary choriocarcinoma of the colon is extremely rare, with only 21 cases reported in the literature. Most of the perforation of colorectal cancers occurs in the abdominal cavity, while abdominal wall abscess is rare; the psoas abscess associated with colon carcinoma is even less observed. Herein, we report the case of a 61-year-old female with poorly differentiated adenocarcinoma of the ascending colon and sigmoid, with choriocarcinomatous differentiation, masquerading a psoas abscess formation. Unfortunately, despite the aggressive therapy, the patient’s disease rapidly progressed, and she died within 2 months after the diagnosis. The typical morphological pattern, immunohistochemistry, and its correlation with serum β-human chorionic gonadotropin enabled a correct diagnosis.
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Affiliation(s)
- Antigony Mitselou
- University of Ioannina School of Health Sciences, Department of Forensic Medicine. Ioannina, Greece
| | - Anna Varouktsi
- Ippokratio Hospital, Department of Internal Medicine. Thessaloníki, Greece
| | - Stamatis S Papadatos
- National and Kapodistrian University of Athens, Medical School, 3rd Department of Internal Medicine. Athens, Greece
| | - Eugenia Balasi
- University of Ioannina School of Health Sciences, Department of Forensic Medicine. Ioannina, Greece
| | - Evangeli Lampri
- University of Ioannina, Cancer Biobank Center. Ioannina, Greece
| | - Konstantinos Katsanos
- University of Ioannina School of Health Sciences, Department of Internal Medicine, Division of Gastroenterology. Ioannina, Greece
| | - Vasiliki Galani
- University of Ioannina, School of Health Sciences, Department of Anatomy, Histology and Embryology. Ioannina, Greece
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21
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Mitselou A, Grammeniatis V, Varouktsi A, Papadatos SS, Katsanos K, Galani V. Proinflammatory cytokines in irritable bowel syndrome: a comparison with inflammatory bowel disease. Intest Res 2020; 18:115-120. [PMID: 32013318 PMCID: PMC7000645 DOI: 10.5217/ir.2019.00125] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 12/03/2019] [Indexed: 12/13/2022] Open
Abstract
Background/Aims Irritable bowel syndrome (IBS) is a common disease often considered as a functional intestinal disorder. Inflammation in IBS is a quite intriguing theory. The aim of this study was to investigate tumor necrosis factor (TNF)-α, interleukin (IL)-1β and IL-6 expression in inflammatory bowel disease (IBD) patients, IBS patients and normal controls. Methods IBS and IBD patients along with normal controls were recruited in the study. In all groups, 2 pinch biopsies were taken at each of 3 anatomical sites (terminal ileum, cecum, and rectum). IBS patients were also subcategorized according to the syndrome clinical manifestations. Two monoclonal antibodies (mAb), TNF-α mAb and IL-6 mAb, and one polyclonal antibody IL-1β mAb were applied for immunohistochemical analysis. Results In IBD patients intensity of TNF-α and IL-1β were lower than in IBS patients or controls, while IL-6 was significantly increased comparing to the aforementioned groups. In IBS patients TNF-α was increased comparing to IBD patients or controls, while IL-6 and IL-1β were similar to controls. In IBS subgroups, TNF-α was lower in diarrhea predominant IBS patients and higher constipation predominant IBS patients. Differences among IBS subgroups regarding IL-6 and IL-1β were nonsignificant. Conclusions IL-6 seems to be the most important proinflammatory cytokine in IBD patients, while TNF-α could play a more significant role in IBS pathogenesis.
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Affiliation(s)
- Antigony Mitselou
- Department of Forensic Pathology, Medical School University of Ioannina, Ioannina, Greece
| | | | - Anna Varouktsi
- Department of Internal Medicine, Ippokratio Hospital, Thessaloniki, Greece
| | - Stamatis S Papadatos
- 3rd Department of Internal Medicine, Sotiria General Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | | | - Vasiliki Galani
- Department of Anatomy, Histology, and Embryology, Medical School University of Ioannina, Ioannina, Greece
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Galani V, Varouktsi A, Papadatos SS, Mitselou A, Sainis I, Constantopoulos S, Dalavanga Y. The role of apoptosis defects in malignant mesothelioma pathogenesis with an impact on prognosis and treatment. Cancer Chemother Pharmacol 2019; 84:241-253. [DOI: 10.1007/s00280-019-03878-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 05/18/2019] [Indexed: 01/09/2023]
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Alexiou G, Vartholomatos E, I Tsamis K, Peponi E, Markopoulos G, A Papathanasopoulou V, Tasiou I, Ragos V, Tsekeris P, Kyritsis A, Galani V. Combination treatment for glioblastoma with temozolomide, DFMO and radiation. J BUON 2019; 24:397-404. [PMID: 30941997] [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: 06/09/2023]
Abstract
PURPOSE Glioblastoma multiforme (GBM) is the most malignant primary brain tumor with dismal prognosis. This tumor is characterized by extensive heterogeneity, thus is difficult to treat and every established or new treatment faces significant hazard of resistance. Temozolomide (TMZ), an oral alkylating agent, is the first-line treatment for GBM, but resistance to TMZ is a major problem. Herewith, we investigated the combined effect of TMZ, difluoromethylornithine (DFMO), an inhibitor of ornithine decarboxylase, and radiation in GBM cell lines. METHODS We used the U87G, U251MG and T98G GBM cell lines. A linac 6MV accelerator (Varian Medical Systems) was used for cell irradiation. Viability and proliferation of the cells were examined with trypan blue exclusion assay, crystal violet and xCELLigence system. Cell cycle and activation of caspase-8 were evaluated with flow cytometry. RESULTS The combination treatment resulted in a consistent higher suppression of proliferation in all cell lines treated and induced a significant higher cell cycle arrest in G2/M phase in U251MG and T98G cell lines. In U251MG cells caspase-8 was increased with each treatment alone, however the combination treatment had lower level of caspase-8 induction, suggesting a co-existence of another mechanism of cell death apart from apoptosis. In T98G cells the combination treatment increased the activation of caspase-8. CONCLUSION Combination treatment with DFMO, TMZ and radiation significantly reduced cell viability in all cell lines tested. Given that both TMZ and DFMO can be administered orally and are related to minimal toxicities, this combination treatment may be a novel treatment strategy for GBM that deserves further investigation.
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Affiliation(s)
- George Alexiou
- Neurosurgical Institute, Medical School, University of Ioannina, Ioannina, Greece
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24
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Mitsis M, Markopoulos G, Alexiou GA, Vartholomatos E, Lazari D, Hodaj E, Nastos D, Lianos G, Zagorianakou P, Galani V, Kyritsis AP. Antiproliferative and cytotoxic action of N-(p-coumaroyl) serotonin in lung cancer cells. J BUON 2018; 23:1693-1698. [PMID: 30610796] [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: 06/09/2023]
Abstract
PURPOSE Lung cancer is among the leading causes of cancer-related cases and cancer-associated deaths. Tumor cells frequently acquire chemoresistance and, due to that, new therapies are always needed in the fight against cancer. Pharmaceutical plants continue to offer novel compounds as anticancer therapies. METHODS We studied the action of N-p-coumaroyl-serotonin (CS), a natural compound from Centaurea seed and safflower on a lung adenocarcinoma cell line. Cytotoxic or antiproliferative effect was studied using the MTT assay. Cell cycle, caspase-8 activation, mitochondrial membrane potential (MMP) and expression of CD15/CD56/CD24/CD44/CD58/CD71 were studied by flow cytometry. RESULTS CS exterted antiproliferative and cytotoxic activity, independent of mitochondrial membrane disruption. This compound caused S phase arrest and a decrease in the expression of CD24/CD44/CD58/CD71. CONCLUSION This is the first report on the in vitro action of CS against lung cancer, necessitating further studies towards its use as a potential anticancer agent.
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Affiliation(s)
- Michail Mitsis
- Department of Surgery, Ioannina University Hospital & University of Ioannina, Ioannina, Greece
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25
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Galani V, Prada P, Besson M. [Psychotropic and liver enzyme's perturbation, conduct to hold]. Rev Med Suisse 2018; 14:331-334. [PMID: 29412527] [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: 06/08/2023]
Abstract
Drug-induced liver injury (DILI) represents a complex clinical problem, both in terms of diagnosis and of therapeutic approach. When the suspected treatment is a psychotropic drug, the role of the liaison psychiatrist is not limited to the re-adaptation of the drug treatment. In this article, with a clinical case as an example, we will discuss the issues to deal with facing a perturbation of liver enzymes in a patient on psychotropic treatment. The risk and benefit assessment of a therapeutic window, as well as the overall care of the patient at the general hospital will be detailed.
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Affiliation(s)
- Vasiliki Galani
- Service de psychiatrie de liaison et d'intervention de crise, Département de santé mentale et de psychiatrie, HUG, 1211 Genève 14
| | - Paco Prada
- Service de psychiatrie de liaison et d'intervention de crise, Département de santé mentale et de psychiatrie, HUG, 1211 Genève 14
| | - Marie Besson
- Unité de psychopharmacologie clinique, Service de pharmacologie et toxicologie cliniques, Département d'anesthésiologie, pharmacologie et soins intensifs, HUG, 1211 Genève 14
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26
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Mitsis M, Alexiou GA, Vartholomatos E, Markopoulos G, Lazari D, Hodaj E, Nastos D, Zagorianakou P, Galani V, Kyritsis AP. N-(p-coumaroyl) serotonin induces cell cycle arrest and apoptosis in breast cancer cells. J BUON 2018; 23:129-133. [PMID: 29552772] [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: 06/08/2023]
Abstract
PURPOSE Breast cancer is the most commonly diagnosed malignancy among women. Breast cancer cells may develop resistance to current chemotherapy, thus new chemotherapeutic agents are urgently needed. METHODS A major number of drugs with anticancer activity have been isolated from plants. Herewith, we investigated for the first time the effect of N-(p-coumaroyl) serotonin (CS), isolated from Centaurea seed on a drug-resistant breast carcinoma (MCF-7) cells. Viability and proliferation of the cells were examined with trypan blue exclusion assay and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. Caspace-8, cell cycle, and CD24/CD44/CD56/ CD58/CD71/CD15 expression were tested with flow cytometry. RESULTS Treatment with CS significantly reduced cell viability. Induction of cell death and cell cycle arrest was confirmed with flow cytometry. After treatment with CS, there was a dose-dependent decrease in CD24/CD44/CD58/CD71 expression, whereas there was no change in CD56 and CD15 expression. CONCLUSION The treatment of breast cancer cells with CS may represent a novel therapeutic strategy and requires further investigation.
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Affiliation(s)
- Michail Mitsis
- Department of Surgery, Ioannina University Hospital & University of Ioannina, Ioannina, Greece
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27
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Mitropoulos K, Merkouri Papadima E, Xiromerisiou G, Balasopoulou A, Charalampidou K, Galani V, Zafeiri KV, Dardiotis E, Ralli S, Deretzi G, John A, Kydonopoulou K, Papadopoulou E, di Pardo A, Akcimen F, Loizedda A, Dobričić V, Novaković I, Kostić VS, Mizzi C, Peters BA, Basak N, Orrù S, Kiskinis E, Cooper DN, Gerou S, Drmanac R, Bartsakoulia M, Tsermpini EE, Hadjigeorgiou GM, Ali BR, Katsila T, Patrinos GP. Genomic variants in the FTO gene are associated with sporadic amyotrophic lateral sclerosis in Greek patients. Hum Genomics 2017; 11:30. [PMID: 29216901 PMCID: PMC5721583 DOI: 10.1186/s40246-017-0126-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [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: 10/13/2017] [Accepted: 11/17/2017] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Amyotrophic lateral sclerosis (ALS) is a devastating disease whose complex pathology has been associated with a strong genetic component in the context of both familial and sporadic disease. Herein, we adopted a next-generation sequencing approach to Greek patients suffering from sporadic ALS (together with their healthy counterparts) in order to explore further the genetic basis of sporadic ALS (sALS). RESULTS Whole-genome sequencing analysis of Greek sALS patients revealed a positive association between FTO and TBC1D1 gene variants and sALS. Further, linkage disequilibrium analyses were suggestive of a specific disease-associated haplotype for FTO gene variants. Genotyping for these variants was performed in Greek, Sardinian, and Turkish sALS patients. A lack of association between FTO and TBC1D1 variants and sALS in patients of Sardinian and Turkish descent may suggest a founder effect in the Greek population. FTO was found to be highly expressed in motor neurons, while in silico analyses predicted an impact on FTO and TBC1D1 mRNA splicing for the genomic variants in question. CONCLUSIONS To our knowledge, this is the first study to present a possible association between FTO gene variants and the genetic etiology of sALS. In addition, the next-generation sequencing-based genomics approach coupled with the two-step validation strategy described herein has the potential to be applied to other types of human complex genetic disorders in order to identify variants of clinical significance.
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Affiliation(s)
| | - Eleni Merkouri Papadima
- Department of Pharmacy, University of Patras School of Health Sciences, Campus, Rion, GR-26504, Patras, Greece
| | | | - Angeliki Balasopoulou
- Department of Pharmacy, University of Patras School of Health Sciences, Campus, Rion, GR-26504, Patras, Greece
| | - Kyriaki Charalampidou
- Department of Pharmacy, University of Patras School of Health Sciences, Campus, Rion, GR-26504, Patras, Greece
| | - Vasiliki Galani
- Department of Pharmacy, University of Patras School of Health Sciences, Campus, Rion, GR-26504, Patras, Greece
| | | | | | - Styliani Ralli
- School of Medicine, University of Thessaly, Larisa, Greece
| | | | - Anne John
- Department of Pathology, College of Medicine and Health Sciences, United Arab Emirates University, Al-Ain, UAE
| | | | | | - Alba di Pardo
- Departments of Neurology and Physiology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Fulya Akcimen
- Suna and Inan Kirac Foundation, NDAL, Bogazici University, Istanbul, Turkey
| | - Annalisa Loizedda
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy.,CNR IRGB, Cagliari, Italy
| | - Valerija Dobričić
- Institute of Neurology CCS, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Ivana Novaković
- Institute of Neurology CCS, School of Medicine, University of Belgrade, Belgrade, Serbia.,Faculty of Medicine, Institute of Human Genetics, University of Belgrade, Belgrade, Serbia
| | - Vladimir S Kostić
- Institute of Neurology CCS, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Clint Mizzi
- Department of Pharmacy, University of Patras School of Health Sciences, Campus, Rion, GR-26504, Patras, Greece
| | - Brock A Peters
- Complete Genomics Inc., Mountain View, CA, USA.,BGI Shenzhen, Shenzhen, People's Republic of China
| | - Nazli Basak
- Suna and Inan Kirac Foundation, NDAL, Bogazici University, Istanbul, Turkey
| | - Sandro Orrù
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Evangelos Kiskinis
- Departments of Neurology and Physiology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - David N Cooper
- Institute of Medical Genetics, Cardiff University, Cardiff, UK
| | - Spyridon Gerou
- ANALYSI Diagnostic Laboratories S.A, Thessaloniki, Greece
| | | | - Marina Bartsakoulia
- Department of Pharmacy, University of Patras School of Health Sciences, Campus, Rion, GR-26504, Patras, Greece
| | - Evangelia-Eirini Tsermpini
- Department of Pharmacy, University of Patras School of Health Sciences, Campus, Rion, GR-26504, Patras, Greece
| | | | - Bassam R Ali
- Department of Pathology, College of Medicine and Health Sciences, United Arab Emirates University, Al-Ain, UAE
| | - Theodora Katsila
- Department of Pharmacy, University of Patras School of Health Sciences, Campus, Rion, GR-26504, Patras, Greece
| | - George P Patrinos
- Department of Pharmacy, University of Patras School of Health Sciences, Campus, Rion, GR-26504, Patras, Greece. .,Department of Pathology, College of Medicine and Health Sciences, United Arab Emirates University, Al-Ain, UAE.
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Alexiou GA, Lazari D, Markopoulos G, Vartholomatos E, Hodaj E, Galani V, Kyritsis AP. Moschamine inhibits proliferation of glioblastoma cells via cell cycle arrest and apoptosis. Tumour Biol 2017; 39:1010428317705744. [PMID: 28475011 DOI: 10.1177/1010428317705744] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Glioblastoma is the most common and most malignant primary brain tumor with a median survival of 15 months. Moschamine is an indole alkaloid that has a serotoninergic and cyclooxygenase inhibitory effect. In this study, we sought to determine whether moschamine could exert cytotoxic and cytostatic effects on glioma cells in vitro. Moschamine was tested for toxicity in zebrafish. We investigated the effect of moschamine on U251MG and T98G glioblastoma cell lines. Viability and proliferation of the cells were examined with trypan blue exclusion assay, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, and the xCELLigence system. Apoptosis (annexin-propidium iodide), cell cycle, and CD24/CD44/CD56/CD15 expression were tested with flow cytometry. Treatment with moschamine significantly reduced cell viability in both cell lines tested. Induction of cell death and cell cycle arrest was confirmed with flow cytometry in both cell lines. After treatment with moschamine, there was a dose-dependent decrease in CD24 and CD44 expression, whereas there was no change in CD56 and CD15 expression in T98G cell line. The zebrafish mortality on the fifth post-fertilization day was zero even for 1 mM of moschamine concentration. The treatment of glioblastoma cell lines with moschamine may represent a novel strategy for targeting glioblastoma.
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Affiliation(s)
- George A Alexiou
- 1 Neurosurgical Institute, School of Medicine, University of Ioannina, Ioannina, Greece
| | - Diamanto Lazari
- 2 Laboratory of Pharmacognosy, Division of Pharmacognosy-Pharmacology, School of Pharmacy, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Georgios Markopoulos
- 3 Laboratory of Biology, School of Medicine, University of Ioannina, Ioannina, Greece.,4 Division of Biomedical Research, Institute of Molecular Biology & Biotechnology-Foundation for Research & Technology (IMBB-FORTH) University, Ioannina, Greece
| | | | - Entela Hodaj
- 2 Laboratory of Pharmacognosy, Division of Pharmacognosy-Pharmacology, School of Pharmacy, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece.,5 Department of Industrial Chemistry, Faculty of Natural Sciences, University of Tirana, Tirana, Albania
| | - Vasiliki Galani
- 6 Department of Anatomy-Histology-Embryology, School of Medicine, University of Ioannina, Ioannina, Greece
| | - Athanasios P Kyritsis
- 1 Neurosurgical Institute, School of Medicine, University of Ioannina, Ioannina, Greece
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29
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Lazari D, Alexiou GA, Markopoulos GS, Vartholomatos E, Hodaj E, Chousidis I, Leonardos I, Galani V, Kyritsis AP. N-(p-coumaroyl) serotonin inhibits glioblastoma cells growth through triggering S-phase arrest and apoptosis. J Neurooncol 2017; 132:373-381. [PMID: 28365838 DOI: 10.1007/s11060-017-2382-3] [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] [Received: 04/16/2016] [Accepted: 02/05/2017] [Indexed: 01/06/2023]
Abstract
Glioblastoma is the most common and most malignant primary brain tumor with a median survival of 15 months. N-(p-coumaroyl) serotonin (CS) is an indole alkaloid with antioxidant, cardioprotective effects after ischemia and antitumor activity. In the present study we sought to determine whether could exert cytotoxic and cytostatic effects in glioma cells in vitro. CS was tested for toxicity in zebrafish. We investigated the effect of CS in U251MG and T98G glioblastoma cell lines. Viability and proliferation of the cells were examined with trypan blue exclusion assay and the xCELLigence system. Cell cycle, activation of caspase-8, mitochondrial membrane potential and CD24/CD44/CD56/CD15/CD71 expression were tested with flow cytometry. Treatment with CS significantly reduced cell viability in both cell lines tested. Induction of cell death and cell cycle arrest at G2/M and S-phase was confirmed with flow cytometry in both cell lines. CS produced significant higher activity of caspase-8 compared to control. After treatment with CS there was a dose-dependent increase in CD15 and CD71 expression, whereas there was no change in CD24/CD44/CD56 expression in both cell lines. The zebrafish mortality on the fifth post fertilization day was zero for even 1 mM of CS concentration. The treatment of glioblastoma cell lines with CS may represent a novel strategy for targeting glioblastoma. Further studies are obviously needed to elucidate the complete mechanism of its antitumor activity.
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Affiliation(s)
- Diamanto Lazari
- Laboratory of Pharmacognosy, Division of Pharmacognosy-Pharmacology, Faculty of Health Sciences, School of Pharmacy, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece
| | - George A Alexiou
- Medical School, Neurosurgical Institute, University of Ioannina, PO BOX 103, Neochoropoulo, Ioannina, Greece.
| | - Georgios S Markopoulos
- Laboratory of Biology, School of Medicine, University of Ioannina, Ioannina, Greece.,Division of Biomedical Research, IMBB-FORTH University Campus, Ioannina, Greece
| | - Evrysthenis Vartholomatos
- Medical School, Neurosurgical Institute, University of Ioannina, PO BOX 103, Neochoropoulo, Ioannina, Greece
| | - Entela Hodaj
- Laboratory of Pharmacognosy, Division of Pharmacognosy-Pharmacology, Faculty of Health Sciences, School of Pharmacy, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece.,Department of Industrial Chemistry, Faculty of Natural Sciences, University of Tirana, Tirana, Albania
| | - Ieremias Chousidis
- Zoology Laboratory Department of Biological Application and Technology, University of Ioannina, 45110, Ioannina, Greece
| | - Ioannis Leonardos
- Zoology Laboratory Department of Biological Application and Technology, University of Ioannina, 45110, Ioannina, Greece
| | - Vasiliki Galani
- Department of Anatomy-Histology-Embryology, Medical School, University of Ioannina, 45110, Ioannina, Greece
| | - Athanasios P Kyritsis
- Medical School, Neurosurgical Institute, University of Ioannina, PO BOX 103, Neochoropoulo, Ioannina, Greece
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Papadatos SS, Mylonas S, Zissis C, Galani V. Neglected nontoxic multinodular goiter presented as a large neck mass. Clin Case Rep 2017; 5:357-358. [PMID: 28265406 PMCID: PMC5331211 DOI: 10.1002/ccr3.771] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Revised: 10/02/2016] [Accepted: 11/18/2016] [Indexed: 11/11/2022] Open
Abstract
Large multinodular goiters, obvious to the naked eye, are rarely confronted by clinicians nowadays; yet they do have a place in the differential diagnosis of the neck masses. Due to the fact that 80% of the neck masses in adults are related to malignancy, the later should be ruled out.
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Affiliation(s)
- Stamatis S. Papadatos
- 3 Department of Internal Medicine; Sotiria General Hospital; National and Kapodistrian University of Athens Medical School; Athens Greece
| | - Stefanos Mylonas
- 2 Department of Internal Medicine; General Hospital of Trikala; Thessaly Greece
| | - Christos Zissis
- 2 Department of Internal Medicine; General Hospital of Trikala; Thessaly Greece
| | - Vasiliki Galani
- Department of Anatomy-Histology-Embryology; University of Ioannina School of Medicine; Ioannina Greece
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31
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Galani V, Papadatos SS, Alexiou G, Galani A, Kyritsis AP. In Vitro and In Vivo Preclinical Effects of Type I IFNs on Gliomas. J Interferon Cytokine Res 2017; 37:139-146. [PMID: 28387596 DOI: 10.1089/jir.2016.0094] [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: 12/28/2022] Open
Abstract
The interferons (IFNs) are a family of cytokines with diverse cellular actions such as control of cell proliferation and regulation of immune responses; therefore, they have been extensively studied as antitumor agents for a variety of malignancies, including gliomas. Type I IFNs exert their antitumor effects either directly, by targeting the tumor cells or the tumor stem cells, or indirectly, by regulating the anticancer activities of the immune system. More specifically, IFN-beta and IFN-alpha exhibit antiproliferative effects by p53 induction, CD8+ T-lymphocyte and macrophage activation, chemokine secretion, and miR-21 downregulation. In vitro and in vivo studies provide evidence that immunotherapy could have a role in glioma treatment, especially when first-line therapeutic interventions fail to produce durable responses. These effects are more obvious when combining IFN-beta with classical antitumor therapies such as temozolamide, an oral chemotherapeutic, for both newly diagnosed and recurrent gliomas. However, further clinical studies are needed to determine whether IFNs will have a definite place in the management of gliomas.
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Affiliation(s)
- Vasiliki Galani
- 1 Department of Anatomy-Histology-Embryology, Faculty of Medicine, University of Ioannina , Ioannina, Greece
| | - Stamatis S Papadatos
- 2 3rd Department of Internal Medicine, Athens School of Medicine, National and Kapodistrian University of Athens , Sotiria General Hospital, Athens, Greece
| | - George Alexiou
- 3 Neurosurgical Institute, University of Ioannina , Ioannina, Greece
| | - Angeliki Galani
- 4 Department of Environmental and Natural Resources Management, University of Patras , Patra, Greece
| | - Athanasios P Kyritsis
- 3 Neurosurgical Institute, University of Ioannina , Ioannina, Greece .,5 Department of Neurology, Faculty of Medicine, University of Ioannina , Ioannina, Greece
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32
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Girard E, Galani V, Toma S, Streuli I. [Psychological distress and infertile couple : a global approach]. Rev Med Suisse 2017; 13:371-374. [PMID: 28708359] [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
Infertility treatment doesn't stop in the technical and specific processing. The psychological distress may be very important and a frequent cause of drop-out during the medical procedure. Therefore the couple should be taken into account globally. Different level of counselling sessions should be offered to give the couple complete information about the procedure. The psychological counselling should be tailored to their need in term of coping strategies in the management of the stress or more specific psychotherapeutical approach. Indeed consultation-liaison psychiatric interventions should be offered when the couple is known for psychiatric comorbidities or is presenting anxio-depressive symptoms in reaction to medical procedure.
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Affiliation(s)
- Elodie Girard
- Service de psychiatrie de liaison et d'intervention de crise (SPLIC), Département de santé mentale et de psychiatrie, HUG, 1211 Genève 14
| | - Vasiliki Galani
- Service de psychiatrie de liaison et d'intervention de crise (SPLIC), Département de santé mentale et de psychiatrie, HUG, 1211 Genève 14
| | - Simona Toma
- Service de psychiatrie de liaison et d'intervention de crise (SPLIC), Département de santé mentale et de psychiatrie, HUG, 1211 Genève 14
| | - Isabelle Streuli
- Unité de médecine de la reproduction et endocrinologie gynécologique, Département de gynécologie et d'obstétrique, HUG, 1211 Genève 14
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Abstract
Difluoromethylornithine (DFMO; eflornithine) is an irreversible suicide inhibitor of the enzyme ornithine decarboxylase which is involved in polyamine synthesis. Polyamines are important for cell survival, thus DFMO was studied as an anticancer agent and as a chemoprevention agent. DFMO exhibited mainly cytostatic activity and had single agent efficacy as well as activity in combination with other chemotherapeutic drugs for some cancers and leukemias. Herewith, we summarize the current knowledge of the anticancer and chemopreventive properties of DFMO and assess the status of clinical trials.
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Affiliation(s)
- George A Alexiou
- Neurosurgical Institute, Ioannina University School of Medicine, Ioannina, GR 451 10, Greece
| | - Georgios D Lianos
- Neurosurgical Institute, Ioannina University School of Medicine, Ioannina, GR 451 10, Greece
| | - Vassileios Ragos
- Neurosurgical Institute, Ioannina University School of Medicine, Ioannina, GR 451 10, Greece
| | - Vasiliki Galani
- Department of Anatomy-Histology-Embryology, Medical School, University of Ioannina, 45110 Ioannina, Greece
| | - Athanassios P Kyritsis
- Neurosurgical Institute, Ioannina University School of Medicine, Ioannina, GR 451 10, Greece
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34
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Lazaros L, Kitsou C, Kostoulas C, Bellou S, Hatzi E, Ladias P, Stefos T, Markoula S, Galani V, Vartholomatos G, Tzavaras T, Georgiou I. Retrotransposon expression and incorporation of cloned human and mouse retroelements in human spermatozoa. Fertil Steril 2017; 107:821-830. [PMID: 28139237 DOI: 10.1016/j.fertnstert.2016.12.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 12/14/2016] [Accepted: 12/17/2016] [Indexed: 12/19/2022]
Abstract
OBJECTIVE To investigate the expression of long interspersed element (LINE) 1, human endogenous retrovirus (HERV) K10, and short interspersed element-VNTR-Alu element (SVA) retrotransposons in ejaculated human spermatozoa by means of reverse-transcription (RT) polymerase chain reaction (PCR) analysis as well as the potential incorporation of cloned human and mouse active retroelements in human sperm cell genome. DESIGN Laboratory study. SETTING University research laboratories and academic hospital. PATIENT(S) Normozoospermic and oligozoospermic white men. INTERVENTION(S) RT-PCR analysis was performed to confirm the retrotransposon expression in human spermatozoa. Exogenous retroelements were tagged with a plasmid containing a green fluorescence (EGFP) retrotransposition cassette, and the de novo retrotransposition events were tested with the use of PCR, fluorescence-activated cell sorting analysis, and confocal microscopy. MAIN OUTCOME MEASURE(S) Retroelement expression in human spermatozoa, incorporation of cloned human and mouse active retroelements in human sperm genome, and de novo retrotransposition events in human spermatozoa. RESULT(S) RT-PCR products of expressed human LINE-1, HERV-K10, and SVA retrotransposons were observed in ejaculated human sperm samples. The incubation of human spermatozoa with either retrotransposition-active human LINE-1 and HERV-K10 or mouse reverse transcriptase-deficient VL30 retrotransposons tagged with an EGFP-based retrotransposition cassette led to EGFP-positive spermatozo; 16.67% of the samples were positive for retrotransposition. The respective retrotransposition frequencies for the LINE-1, HERV-K10, and VL30 retrotransposons in the positive samples were 0.34 ± 0.13%, 0.37 ± 0.17%, and 0.30 ± 0.14% per sample of 10,000 spermatozoa. CONCLUSION(S) Our results show that: 1) LINE-1, HERV-K10, and SVA retrotransposons are transcriptionally expressed in human spermatozoa; 2) cloned active retroelements of human and mammalian origin can be incorporated in human sperm genome; 3) active reverse transcriptases exist in human spermatozoa; and 4) de novo retrotransposition events occur in human spermatozoa.
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Affiliation(s)
- Leandros Lazaros
- Laboratory of Medical Genetics of Human Reproduction, Medical School, Ioannina University, Ioannina, Greece; Medical Genetics and Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Ioannina University Hospital, Ioannina, Greece; Genesis-Genoma Lab, Chalandri-Athens, Greece
| | - Chrysoula Kitsou
- Laboratory of Medical Genetics of Human Reproduction, Medical School, Ioannina University, Ioannina, Greece
| | - Charilaos Kostoulas
- Laboratory of Medical Genetics of Human Reproduction, Medical School, Ioannina University, Ioannina, Greece
| | - Sofia Bellou
- Foundation for Research & Technology-Hellas Institute of Molecular Biology and Biotechnology, Department of Biomedical Research, Ioannina, Greece
| | - Elissavet Hatzi
- Medical Genetics and Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Ioannina University Hospital, Ioannina, Greece
| | - Paris Ladias
- Laboratory of Medical Genetics of Human Reproduction, Medical School, Ioannina University, Ioannina, Greece
| | - Theodoros Stefos
- Medical Genetics and Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Ioannina University Hospital, Ioannina, Greece
| | - Sofia Markoula
- Laboratory of Medical Genetics of Human Reproduction, Medical School, Ioannina University, Ioannina, Greece
| | - Vasiliki Galani
- Department of Anatomy-Histology-Embryology, Medical School, Ioannina University, Ioannina, Greece
| | - Georgios Vartholomatos
- Hematology Laboratory, Molecular Biology Unit, Ioannina University Hospital, Ioannina, Greece
| | - Theodore Tzavaras
- Department of General Biology, Medical School, Ioannina University, Ioannina, Greece
| | - Ioannis Georgiou
- Laboratory of Medical Genetics of Human Reproduction, Medical School, Ioannina University, Ioannina, Greece; Medical Genetics and Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Ioannina University Hospital, Ioannina, Greece.
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Mitselou A, Papadatos SS, Tsoultsidou S, Fragkouli K, Mitsis M, Vougiouklakis T, Galani V. Giant Metastatic Liver Tumor of Unknown Primary Origin: Thoracic Autopsy Solves the Mystery. Acta Medica (Hradec Kralove) 2017; 60:163-166. [PMID: 29716684 DOI: 10.14712/18059694.2018.14] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
A 59-year-old male patient was hospitalized in the Internal Medicine Department for investigation of hepatic metastases from an unknown primary neoplasm. During the hospitalization the patient died from acute myocardial infarction. The autopsy revealed a 8.2 kilograms (kg) liver that was diffusely infiltrated by whitish metastatic masses. No other tumor was detected, apart from a 2.5 centimeters (cm) pulmonary nodule next to the right intermediate bronchus that was histologically compatible with small cell lung cancer (SCLC). Despite the fact that hepatic metastases from SCLCs are common, diffuse metastatic hepatomegaly from a malignant pulmonary nodule are rarely seen. Given that the most common cause of malignancy-related death is lung cancer, early diagnosis and appropriate management of pulmonary nodules is of paramount importance.
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Affiliation(s)
- Antigony Mitselou
- Department of Forensic Medicine and Toxicology, University of Ioannina, Greece
| | - Stamatis S Papadatos
- 3rd Department of Internal Medicine, National and Kapodistrian University of Athens School of Medicine, Sotiria General Hospital, Athens, Greece
| | - Savvina Tsoultsidou
- Department of Forensic Medicine and Toxicology, University of Ioannina, Greece
| | - Kleio Fragkouli
- Department of Forensic Medicine and Toxicology, University of Ioannina, Greece
| | | | | | - Vasiliki Galani
- Department of Anatomy-Histology-Embryology, University of Ioannina, Greece.
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Galani V, Kastamoulas M, Varouktsi A, Lampri E, Mitselou A, Arvanitis DL. IFNs-signaling effects on lung cancer: an up-to-date pathways-specific review. Clin Exp Med 2016; 17:281-289. [PMID: 27416926 DOI: 10.1007/s10238-016-0432-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 07/07/2016] [Indexed: 01/01/2023]
Abstract
IFNs have found important applications in clinical medicine, including the treatment of lung malignancies. The biological effect of the IFN-receptor signaling is regulated essentially by three factors: the expression profile of the IFN itself, the profile of the receptor, and the expression of target genes. IFNs initiate their signaling by binding to specific receptors. The activated IFNs can directly induce gene transcription and/or multiple downstream signaling that both induce diverse cellular responses including the cell cycle arrest and the apoptosis in tumor cells. We provided evidence that IFN-γ enhances the pro cell death effects of Fas/CD95 in human neoplastic alveolar epithelial cell line, A549. We also found that p27 protein plays a pivotal role in the inducing cell death of IFNγ-CH-11-treated A549 cells, since it is involved in the Ras/Raf signaling pathway. This article discusses recent insights into these possible additional functions of IFNs in lung cancer treatment.
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Affiliation(s)
- Vasiliki Galani
- Department of Anatomy-Histology-Embryology, Faculty of Medicine, University of Ioannina, 45110, Ioannina, Greece.
| | - Michalis Kastamoulas
- Department of Anatomy-Histology-Embryology, Faculty of Medicine, University of Ioannina, 45110, Ioannina, Greece
| | | | - Evangeli Lampri
- Department of Cancer Biobank Center, University of Ioannina, Ioannina, Greece
| | - Antigoni Mitselou
- Department of Forensic Pathology, Faculty of Medicine, University of Ioannina, Ioannina, Greece
| | - Dimitrios L Arvanitis
- Department of Anatomy-Histology-Embryology, Faculty of Medicine, University of Thessaly, Larissa, Greece
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Galani V, Alexiou GA, Miliaras G, Dimitriadis E, Triantafyllou E, Galani A, Goussia A, Kanavaros P, Trangas T. Expression of Stem Cell Marker Nestin and MicroRNA-21 in Meningiomas. Turk Neurosurg 2016; 25:574-7. [PMID: 26242334 DOI: 10.5137/1019-5149.jtn.10800-14.2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
AIM Meningiomas are one of the most common benign intracranial tumors, making up nearly one third of all primary intracranial tumors. The majority of meningiomas have benign histological features and total resection is associated with favourable prognosis. Atypical and malignant meningiomas are associated with increased risk of recurrence. In the present study we set out to investigate the role of nestin mRNA levels and miR-21 in meningiomas. MATERIAL AND METHODS We studied 17 patients with meningiomas that were treated surgically in our institute. Clinical variables that were analyzed were age, sex and histology. The expression of stem cell marker nestin mRNA levels and miR-21 was investigated in tissue samples by qRT-PCR. RESULTS Considerable levels of both miR-21 and nestin mRNA were found. Atypical and anaplastic meningiomas had higher expression of both miR-21 and nestin compared to benign tumors. Furthermore, a trend towards a positive correlation between miR-21 and nestin mRNA levels was also found. CONCLUSION Increased miR-21 and nestin mRNA levels were found in anaplastic meningiomas, in which recurrence is common, and the role of miR-21 and Nestin in meningiomas therefore warrants further investigation.
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Affiliation(s)
- Vasiliki Galani
- University of Ioannina, Faculty of Medicine, Department of Anatomy-Histology-Embryology, Epirus, Greece
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Kounnis V, Chondrogiannis G, Mantzaris MD, Tzakos AG, Fokas D, Papanikolaou NA, Galani V, Sainis I, Briasoulis E. Microcystin LR Shows Cytotoxic Activity Against Pancreatic Cancer Cells Expressing the Membrane OATP1B1 and OATP1B3 Transporters. Anticancer Res 2015; 35:5857-5865. [PMID: 26504008] [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] [Indexed: 06/05/2023]
Abstract
Microcystin-LR (MC-LR) is a cyanobacterial cyclopeptide, known for its unique ability to cause acute liver injury. Its cellular uptake is facilitated by specific transmembrane organic anion-transporting polypeptides (OATPs) specifically OATP1B1 and 1B3. The objective of the present study was to investigate the expression of OATPs 1A2, 1B1 and 1B3 in pancreatic cancer cell lines BxPC-3 and MIA PACA-2 and assess their role in MC-LR-mediated cytotoxicity by using the novel xCELLigence system and flow cytometry. OATP1B1 and 1B3 were found to be expressed in both cell lines at both the mRNA and protein levels. The cytotoxic effects of MC-LR were proportionally related to the expression of these transporters. Moreover the cytotoxic potency of MC-LR was found superior to gemcitabine. Based on the expression of the organic anion transporting polypeptides 1B1 and 1B3 in pancreatic carcinoma tissue and cell lines and the potent cytotoxicity induced by MC-LR in vitro, we propose that this molecule could be held as structural basis for the development of novel targeted-compounds against pancreatic cancer.
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Affiliation(s)
- Valentinos Kounnis
- Molecular Oncology Laboratories, Oxford University, Department of Oncology, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, Oxford, U.K. Human Cancer Biobank Center, University of Ioannina, Ioannina, Greece
| | - Georgios Chondrogiannis
- Department of Anatomy-Histology-Embryology, Medical School, University of Ioannina, Ioannina, Greece
| | - Michalis D Mantzaris
- Laboratory of Biological Chemistry, Medical School, University of Ioannina, Ioannina, Greece
| | - Andreas G Tzakos
- Human Cancer Biobank Center, University of Ioannina, Ioannina, Greece Department of Chemistry, University of Ioannina, Ioannina, Greece
| | - Demosthenes Fokas
- Department of Materials Science and Engineering, University of Ioannina, Ioannina, Greece
| | - Nikolaos A Papanikolaou
- Laboratory of Biological Chemistry, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Vasiliki Galani
- Department of Anatomy-Histology-Embryology, Medical School, University of Ioannina, Ioannina, Greece
| | - Ioannis Sainis
- Human Cancer Biobank Center, University of Ioannina, Ioannina, Greece
| | - Evangelos Briasoulis
- Human Cancer Biobank Center, University of Ioannina, Ioannina, Greece Medical School, University of Ioannina, Ioannina, Greece
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Lampri ES, Chondrogiannis G, Ioachim E, Varouktsi A, Mitselou A, Galani A, Briassoulis E, Kanavaros P, Galani V. Biomarkers of head and neck cancer, tools or a gordian knot? Int J Clin Exp Med 2015; 8:10340-57. [PMID: 26379825 PMCID: PMC4565208] [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] [Received: 04/20/2015] [Accepted: 06/21/2015] [Indexed: 06/05/2023]
Abstract
Head and neck tumors comprise a wide spectrum of heterogeneous neoplasms for which biomarkers are needed to aid in earlier diagnosis, risk assessment and therapy response. Personalized medicine based on predictive markers linked to drug response, it is hoped, will lead to improvements in outcomes and avoidance of unnecessary treatment in carcinoma of the head and neck. Because of the heterogeneity of head and neck tumors, the integration of multiple selected markers in association with the histopathologic features is advocated for risk assessment. Validation of each biomarker in the context of clinical trials will be required before a specific marker can be incorporated into daily practice. Furthermore, we will give evidence that some proteins implicated in cell-cell interaction, such as CD44 may be involved in the multiple mechanism of the development and progression of laryngeal lesions and may help to predict the risk of transformation of the benign or precancerous lesions to cancer.
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Affiliation(s)
- Evangeli S Lampri
- Department of Pathology, Faculty of Medicine, University of IoanninaGreece
| | - Georgios Chondrogiannis
- Department of Anatomy-Histology-Embryology, Faculty of Medicine, University of IoanninaGreece
| | - Elli Ioachim
- Department of Pathology, General Hospital “G. Hatzikosta”Ioannina, Greece
| | | | - Antigoni Mitselou
- Department of Forensic Pathology, Faculty of Medicine, University of IoanninaGreece
| | - Aggeliki Galani
- Department of Environmental and Natural Resources Management, School of Engineering, University of PatrasAgrinio, Greece
| | | | - Panagiotis Kanavaros
- Department of Anatomy-Histology-Embryology, Faculty of Medicine, University of IoanninaGreece
| | - Vasiliki Galani
- Department of Anatomy-Histology-Embryology, Faculty of Medicine, University of IoanninaGreece
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Kosmas IP, Kitsou C, Lazaros L, Markoula S, Peschos D, Mynbaev O, Tournaye H, Prapas N, Prapas I, Zikopoulos A, Galani V, Georgiou I. Everolimus, an mTOR pathway inhibitor, is highly successful on ovarian hyperstimulation syndrome by reducing ovarian weight and progesterone levels: a preclinical experimental randomized controlled study. Gynecol Endocrinol 2015; 31:702-7. [PMID: 26172931 DOI: 10.3109/09513590.2015.1065479] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The usefulness of various pathways inhibitors, Everolimus, an inhibitor of mammalian target of rapamycin (mTOR), Infliximab, a monoclonal antibody which blocks the tumor necrosis factor-a (TNF-a), Erlotinib, a tyrosine protein kinase inhibitor of the epidermal growth factor receptor (EGFR), Metformin, an activator of AMP-activated protein kinase enzyme (AMPK) and vascular permeability reducers were explored in an ovarian hyperstimulation syndrome (OHSS) rat model. Sixty-three female Wistar rats were randomly divided in seven groups. The control group received saline, while the OHSS group received recombinant -- follicle-stimulating hormone (rec-FSH) for four consecutive days. The other five groups received rec-FSH for 4 d and Everolimus daily, Infliximab once, Erlotinib daily, Metformin daily and Vitamin C daily, respectively. All groups received human chorionic gonadotropin (hCG) at the fifth day. The efficacy of Everolimus administration for various intervals was also explored. Significantly reduced ovarian weight was observed in the Everolimus group (rec-FSH + hCG + mTOR inhibitor) compared to the OHSS group (p < 0.001). The Everolimus group also showed the lowest progesterone (PRG) concentration (p = 0.007). The Erlotinib group (rec-FSH + hCG + EGFR inhibitor) presented with the lowest graafian follicle number, while the Everolimus group was characterized by the lowest corpus luteum number. The vascular permeability and the estradiol levels did not differ between groups. Finally, the Everolimus intra-comparison showed no difference in all measured outcomes. Studying the different pathways linked to vascular endothelial growth factor (VEGF) pathway, we conclude that targeting mTOR pathways is beneficial for reducing ovarian weight and PRG levels in an OHSS animal model.
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Affiliation(s)
- Ioannis P Kosmas
- a Department of Obstetrics and Gynecology , Ioannina State General Hospital G. Chatzikosta , Ioannina , Greece
- b The International Translational Medicine and Biomodeling Research Team, MIPT Center for Human Physiology Studies, Laboratory of Cellular and Molecular Technologies, Moscow Institute of Physics and Technology , Moscow , Russia
| | - Chrysoula Kitsou
- c Genetics and IVF Unit, Department of Obstetrics and Gynecology , Medical School, Ioannina University , Ioannina , Greece
| | - Leandros Lazaros
- c Genetics and IVF Unit, Department of Obstetrics and Gynecology , Medical School, Ioannina University , Ioannina , Greece
| | - Sofia Markoula
- d Department of Neurology , Medical School, Ioannina University , Ioannina , Greece
| | - Dimitrios Peschos
- e Laboratory of Physiology , Medical School, Ioannina University , Ioannina , Greece
| | - Ospan Mynbaev
- b The International Translational Medicine and Biomodeling Research Team, MIPT Center for Human Physiology Studies, Laboratory of Cellular and Molecular Technologies, Moscow Institute of Physics and Technology , Moscow , Russia
| | - Herman Tournaye
- f Vrije Universiteit Brussel and Centre for Reproductive Medicine , Brussels , Belgium
| | | | | | - Athanasios Zikopoulos
- c Genetics and IVF Unit, Department of Obstetrics and Gynecology , Medical School, Ioannina University , Ioannina , Greece
| | - Vasiliki Galani
- h Department of Anatomy-Histology-Embryology , Medical School, Ioannina University , Ioannina , Greece
| | - Ioannis Georgiou
- c Genetics and IVF Unit, Department of Obstetrics and Gynecology , Medical School, Ioannina University , Ioannina , Greece
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Kitsou C, Kosmas I, Lazaros L, Hatzi E, Euaggelou A, Mynbaev O, Tournaye H, Prapas N, Prapas I, Zikopoulos K, Galani V, Georgiou I. Ovarian hyperstimulation syndrome inhibition by targeting VEGF, COX-2 and calcium pathways: a preclinical randomized study. Gynecol Endocrinol 2014; 30:587-92. [PMID: 24819316 DOI: 10.3109/09513590.2014.910191] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE The efficacy of vascular endothelial growth factor (VEGF), COX-2, calcium and aromatase inhibitors in an ovarian hyperstimulation syndrome (OHSS) rat model was tested. METHODS One hundred and eight female Wistar rats were randomly divided in nine groups. The control group received saline, while the OHSS group received rec-FSH for 4 consecutive days. The other seven groups received rec-FSH (4d) and Bevacizumab twice, Parecoxib daily, Verapamil daily, Parecoxib daily and Bevacizumab twice, Verapamil daily and Bevacizumab twice, Parecoxib and Verapamil daily, Letrozole and Meloxicam daily, respectively. All groups received also hCG at the 5th day. RESULTS All intervention groups were characterized by reduced vascular permeability compared to the OHSS group, which in the groups of Verapamil (Calcium inhibition) and Parecoxib + Verapamil (COX-2 + Calcium inhibition) presented significant statistical difference. The Verapamil group showed the lowest corpus luteum formation, while the Parecoxib (COX-2 inhibition), the Parecoxib + Verapamil (COX-2 + Calcium inhibition), the Bevacizumab + Parecoxib (VEGF + COX-2 inhibition) and the Bevacizumab + Verapamil (VEGF + Calcium inhibition) groups were also characterized by lower corpus luteum numbers compared to the OHSS group. Furthermore, lower graafian follicle formation was observed in the above groups, while the ovarian weight and the hormonal profile were not significantly affected. CONCLUSIONS Studying the different check points of the VEGF pathway, we conclude that targeting calcium pathways could be beneficial for the vascular permeability control in an OHSS animal model.
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Affiliation(s)
- Chrysoula Kitsou
- Genetics and IVF Unit, Department of Obstetrics and Gynecology, Medical School, Ioannina University , Ioannina , Greece
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Chondrogiannis G, Kastamoulas M, Kanavaros P, Vartholomatos G, Bai M, Baltogiannis D, Sofikitis N, Arvanitis D, Galani V. Cytokine effects on cell viability and death of prostate carcinoma cells. Biomed Res Int 2014; 2014:536049. [PMID: 24982891 PMCID: PMC4058150 DOI: 10.1155/2014/536049] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2014] [Revised: 04/09/2014] [Accepted: 05/06/2014] [Indexed: 01/01/2023]
Abstract
We analyzed the effects of IL-13, IFN- γ , and IL-1 β on cell viability and death of LNCaP and PC-3 cells and major signaling pathways involved in these effects. Significant increase of LNCaP cell death (apoptotic and necrotic) and increased levels of active caspase 3 were observed in cells treated with inhibitors of ERK 1/2 (UO126) and p38 (SB203580) prior to IL-1 β treatment in comparison to cells treated with UO126, SB203580, or IL-1 β alone. Significant increase of LNCaP but not PC-3 cell death was detected after treatment with LY-294002 (inhibitor of phosphatidylinositol 3-kinase). No significant increase of LNCaP and PC-3 cell death was observed after treatment with SP600125 (inhibitor of JNK), SB203580 (inhibitor of p38), UO126 (inhibitor of ERK 1/2), or BAY 11-7082 (inhibitor of NF- κ B). Reduced c-FLIPL expression was observed in LNCaP cells treated with LY-294002. The significant potentiation of LNCaP cell death by inhibition of ERK 1/2, p38, and PI3-K pathways may provide a rationale for therapeutic approach in androgen-dependent prostate cancer.
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Affiliation(s)
- Georgios Chondrogiannis
- Department of Anatomy-Histology-Embryology, Medical School, University of Ioannina, 45110 Ioannina, Greece
| | - Michalis Kastamoulas
- Department of Anatomy-Histology-Embryology, Medical School, University of Ioannina, 45110 Ioannina, Greece
| | - Panagiotis Kanavaros
- Department of Anatomy-Histology-Embryology, Medical School, University of Ioannina, 45110 Ioannina, Greece
| | | | - Maria Bai
- Department of Pathology, Medical School, University of Ioannina, 45110 Ioannina, Greece
| | | | - Nikolaos Sofikitis
- Department of Urology, Medical School, University of Ioannina, 45110 Ioannina, Greece
| | - Dimitrios Arvanitis
- Department of Anatomy, Medical School, University of Thessaly, 44110 Larisa, Greece
| | - Vasiliki Galani
- Department of Anatomy-Histology-Embryology, Medical School, University of Ioannina, 45110 Ioannina, Greece
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Kastamoulas M, Chondrogiannis G, Kanavaros P, Vartholomatos G, Bai M, Briasoulis E, Arvanitis D, Galani V. Cytokine effects on cell survival and death of A549 lung carcinoma cells. Cytokine 2013; 61:816-25. [DOI: 10.1016/j.cyto.2013.01.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2012] [Revised: 11/04/2012] [Accepted: 01/19/2013] [Indexed: 12/13/2022]
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Kitsoulis P, Marini A, Pseftinakou A, Iliou K, Galani V, Paraskevas G. Morphological study of the calcaneofibular ligament in cadavers. Folia Morphol (Warsz) 2011; 70:180-184. [PMID: 21866529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The aim of the present study was to investigate the anatomical and morphological characteristics and the maximum elongation of the calcaneofibular ligament (CFL) in cadavers. In a sample of 72 cadaveric lower limbs the mean values of length, width, thickness, and angle with the sagittal plane were recorded for the CFL. The mean ligament's length was 31.8 mm, and the mean width and thickness were 4.4 mm and 1.5 mm respectively. The mean angle with the sagittal plane was 51.11°. In 72.2% of the lower limbs studied, the ligament presented one band, while 22.2% and 5.6% of them were two-banded and three-banded respectively. A common origin with the anterior talofibular ligament (TFL) was found in 24 of the feet (33%). There were also 4 cases in which the anterior TFL was absent. Finally, we measured the maximal elongation of the ligament during extreme inversion and simultaneous dorsal flexion and found it to be 2.88 mm on average. We noticed and statistically verified that women presented a greater elongation compared to men. A precise knowledge of the origin, insertion, direction, and morphology of CFL is critical for ligament injuries in ankle sprains and during ankle reconstruction. Ligament elasticity plays an important role in the range of ankle motion and ligament shearing. Male and female ankle joints differ in several anthropometric characteristics and thus the genre differences in ligament elongation are of great interest.
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Affiliation(s)
- P Kitsoulis
- Department of Anatomy-Histology-Embryology, Medical School, University of Ioanina, Greece.
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Kitsoulis P, Marini A, Iliou K, Galani V, Zimpis A, Kanavaros P, Paraskevas G. Signs and symptoms of temporomandibular joint disorders related to the degree of mouth opening and hearing loss. BMC Ear Nose Throat Disord 2011; 11:5. [PMID: 21612586 PMCID: PMC3117795 DOI: 10.1186/1472-6815-11-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/07/2010] [Accepted: 05/25/2011] [Indexed: 11/20/2022]
Abstract
Background The temporomandibular joint is a unique bi-condylar joint involved in mastication and speech. Temporomandibular joint disorders (TMD) have a range of symptoms, including aural symptoms, and are present in approximately 75% of normal populations. The present study examined the relationship between signs and symptoms of TMD and mouth opening, gender, joint and aural symptoms, and hearing loss. Methods The study involved 464 healthy Greek university students (156 men and 308 women) with a mean age of 19.6 years. Age, gender and maximum mouth opening was recorded. Mouth opening was measured using Vernier calipers. An anamnestic questionnaire was used to stratify the subjects into four groups based on TMD severity. Aural symptoms and an audiogram were recorded for each subject too. Data were analyzed using multifactor ANOVA, chi-square, t-test, Mann-Whitney and Kruskal-Wallis tests. Results The overall incidence of TMD signs and symptoms was 73.3%. The incidence and severity was greater in females than males (p-value 0.0001 < 0.05). The number of aural symptoms was associated to the TMD severity (p-value 0.0001 < 0.05) as well as maximum mouth opening (p-value 0.004 < 0.05). Audiometry showed that moderate and severe TMD was associated with hearing loss of median and low tones respectively (p-value 0.0001 < 0.05). TMJ pain (p-value 0.0001 < 0.05), TMJ ankylosis (p-value 0.0001 < 0.05), bruxism (p-value 0.0001 < 0.05) and ear itching (p-value 0.0001 < 0.05) were also found to be statistically different between TMD and non-TMD subjects. Conclusions TMD signs and symptoms were more common and severe in females than males. TMD severity is correlated with the degree of mouth opening and the number of aural symptoms. The absence or presence of mild TMD are associated with normal audiograms while moderate and severe TMD are related to hearing loss in median and low tones respectively. Bruxism, joint ankylosis, joint pain and ear itching were more common in TMD than non-TMD patients.
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Affiliation(s)
- Panagiotis Kitsoulis
- Orthopaedic Surgeon, Professor of Anatomy-Histology-Embryology, Medical School, University of Ioannina, Greece.
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Galani V, Tatsaki E, Bai M, Kitsoulis P, Lekka M, Nakos G, Kanavaros P. The role of apoptosis in the pathophysiology of Acute Respiratory Distress Syndrome (ARDS): An up-to-date cell-specific review. Pathol Res Pract 2010; 206:145-50. [DOI: 10.1016/j.prp.2009.12.002] [Citation(s) in RCA: 124] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2009] [Accepted: 12/03/2009] [Indexed: 01/01/2023]
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Polyzos PT, Arvanitis LD, Charchanti A, Galani V, Havaki S, Kallioras VA, Nakou M, Faros EG, Marinos E, Sgantzos MN, Kittas C. Decidualized and pre-decidualized normal endometrial stromal cells produce more O-linked N-acetylglucosamine containing epitope H than non-decidualized normal endometrial stromal cells. Histol Histopathol 2006; 21:1193-8. [PMID: 16874662 DOI: 10.14670/hh-21.1193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The epitope H contains an O-linked N-acetylglucosamine residue in a specific conformation and/or environment recognized by the monoclonal antibody H (mAbH). mAbH stains two bands with Mr x10(-3) of 209 and 62 in lysates of cultured rat astrocytes. In addition, in extracts of cultured MCF-7 breast carcinoma cell line cells it stains cytokeratin 8 and five polypeptides originating from Triton X-100-soluble (Mr x10(-3) of 232, 67 and 37) and from the Triton X-100-insoluble (Mr x10(-3) of 51 and 50) fractions, respectively. In our previous studies we used the mAbH to investigate by immunostaining the expression of the epitope H in normal human brains, human brains with a variety of lesions, astrocytic tumors, infiltrating ductal breast carcinomas, fibroadenomas, and mitochondria-rich normal, metaplastic and neoplastic cells. In order to gain further insight into the expression patterns of the epitope H in human tissues we used the mAbH to investigate the immunohistochemical expression of the epitope H in normal human endometrium, including 30 cases of proliferative endometrium, 30 cases of early secretory endometrium, 30 cases of mid secretory endometrium, 30 cases of late secretory endometrium and 30 cases of decidual tissues. The main results were the following: 1) The decidual stromal cells presented in all cases high cytoplasmic expression of the epitope H; 2) The pre-decidual stromal cells presented in all cases of late secretory endometrium significant cytoplasmic expression of the epitope H ranging from moderate to high expression; 3) The non pre-decidual stromal cells of the functional endometrial layer presented in all cases insignificant cytoplasmic expression of the epitope H ranging from null to low expression; 4) The stromal cells of the basal layer of the endometrium and decidua did not express the epitope H in any case; 5) The endometrial stromal granulocytes did not express the epitope H in any case and 6) The blood vessel wall cells (endothelial and smooth muscle) of the endometrium through the whole duration of the menstrual cycle and of the decidua presented high cytoplasmic expression of the epitope H. It is concluded that decidualized and pre-decidualized human normal endometrial stromal cells show increased expression of the O-linked N-acetylglucosamine containing epitope H compared to non-decidualized endometrial stromal cells. These findings suggest that the expression of the epitope H may be under positive progesteronic control in normal human endometrium. Further investigation of the antigens bearing the epitope H might help to gain further insight into the histophysiology and the pathology of human endometrium.
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Affiliation(s)
- P T Polyzos
- Department of Histology-Embryology, University of Athens, Medical School, Athens, Greece
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Abstract
The aim of this study was to evaluate the effect of parenteral nutrition containing medium- and long-chain triglycerides on the function of the respiratory system and to investigate mechanisms involved in this process. We studied 13 patients with acute respiratory distress syndrome (ARDS), 8 receiving lipid and 5 placebo, and 6 without ARDS, receiving lipid. Bronchoalveolar lavage (BAL) was performed before and 1 hour after administration of lipid or placebo. In patients with ARDS, lipid administration resulted in deterioration of oxygenation (Pa(O(2))/FI(O(2)): from 129 +/- 37 to 95 +/- 42), compliance of respiratory system (from 39.2 +/- 12 to 33.1 +/- 9.2 ml/cm H(2)O), and pulmonary vascular resistance (from 258 +/- 47 to 321 +/- 58 dyne x s x cm(-5)). In the BAL fluid of the same group, an increase in total protein and phospholipid concentrations, phospholipase activities, platelet-activating factor and neutrophils, as well as alterations in BAL lipid profile were observed. No significant changes were observed in the control or in the ARDS-Placebo groups. In conclusion, this study indicates that administration of medium- and long-chain triglycerides in patients with ARDS causes alterations in lung function and hemodynamics. Inflammatory cells, possibly activated by lipids, release phospholipase A(2) and platelet-activating factor, enhancing edema formation, inflammation, and surfactant alterations.
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Affiliation(s)
- Marilena E Lekka
- Chemistry Department, Medical School, University of Ioannina, Greece
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Tellis C, Pantazi D, Ioachim E, Galani V, Lekka ME. Localization of an alkyl-acetyl-glycerol-CDP-choline: cholinephosphotransferase activity in submitochondrial fractions of Tetrahymena pyriformis. Eur J Cell Biol 2004; 82:573-8. [PMID: 14703014 DOI: 10.1078/0171-9335-00343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Tetrahymena pyriformis contains platelet-activating factor (PAF) as a minor lipid, which is biosynthesized de novo. A dithiothreitol-insensitive CDP-choline:cholinephosphotransferase (AAG-CPT), which utilizes alkyl-acetyl-glycerol as a substrate, had been detected in both the mitochondrial and microsomal fractions of the protozoan. In the present report, localization of this enzyme in submitochondrial fractions was studied. Cell fractionation was evaluated with enzyme and morphological markers. In this respect, succinate dehydrogenase, NADPH:cytochrome c reductase, glucose-6-phosphatase, alkaline phosphatase, monoaminoxidase, and cytochrome c oxidase activities were investigated. In the presence of antimycin A, mitochondrial activity of NADPH-cytochrome c reductase, was increased, while the microsomal one was reduced. Cardiolipin was distributed in the inner mitochondrial membrane. Alkaline phosphatase was found exclusively in the cytosol of the protozoan. The main portion of the dithiothreitol-insensitive AAG-CPT was localized in the inner mitochondrial membrane. Our data indicate that mitochondria are able to produce PAF, which might be associated with their function.
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Affiliation(s)
- Constantinos Tellis
- Laboratory of Biochemistry, Chemistry Department, School of Science, University of Ioannina, Ioannina, Greece
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