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Toubanaki DK, Efstathiou A, Tzortzatos OP, Valsamidis MA, Papaharisis L, Bakopoulos V, Karagouni E. Nervous Necrosis Virus Modulation of European Sea Bass ( Dicentrarchus labrax, L.) Immune Genes and Transcriptome towards Establishment of Virus Carrier State. Int J Mol Sci 2023; 24:16613. [PMID: 38068937 PMCID: PMC10706053 DOI: 10.3390/ijms242316613] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 11/16/2023] [Accepted: 11/20/2023] [Indexed: 12/18/2023] Open
Abstract
Viral infections of teleost fish have great environmental and economic implications in aquaculture. Nervous necrosis virus (NNV) is a pathogen affecting more than 120 different species, causing high mortality and morbidity. Herein, we studied the course of NNV experimental infection of D. labrax, focusing on survivors which indicated viral carrier state. To determine the carrier state of D. labrax head kidney, we performed a gene expression analysis of selected immune-related genes and we profiled its transcriptome 14 days post infection (dpi). All tested genes showed clear differentiations in expression levels while most of them were up-regulated 14 dpi suggesting that their role is not limited in early antiviral responses, but they are also implicated in disease persistence. To gain a better understanding of the fish that survived the acute infection but still maintained a high viral load, we studied the differential expression of 124 up-regulated and 48 down-regulated genes in D. labrax head kidney, at 14 dpi. Concluding, the NNV virus persistent profile was assessed in D. labrax, where immune-related gene modification was intense (14 dpi) and the head kidney transcriptome profile at this time point offered a glimpse into host attempts to control the infection in asymptomatic carriers.
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Affiliation(s)
- Dimitra K. Toubanaki
- Immunology of Infection Group, Department of Microbiology, Hellenic Pasteur Institute, 11521 Athens, Greece; (D.K.T.); (A.E.); (O.-P.T.)
| | - Antonia Efstathiou
- Immunology of Infection Group, Department of Microbiology, Hellenic Pasteur Institute, 11521 Athens, Greece; (D.K.T.); (A.E.); (O.-P.T.)
| | - Odysseas-Panagiotis Tzortzatos
- Immunology of Infection Group, Department of Microbiology, Hellenic Pasteur Institute, 11521 Athens, Greece; (D.K.T.); (A.E.); (O.-P.T.)
| | - Michail-Aggelos Valsamidis
- Department of Marine Sciences, School of the Environment, University of the Aegean, University Hill, Lesvos, 81100 Mytilene, Greece; (M.-A.V.); (V.B.)
| | | | - Vasileios Bakopoulos
- Department of Marine Sciences, School of the Environment, University of the Aegean, University Hill, Lesvos, 81100 Mytilene, Greece; (M.-A.V.); (V.B.)
| | - Evdokia Karagouni
- Immunology of Infection Group, Department of Microbiology, Hellenic Pasteur Institute, 11521 Athens, Greece; (D.K.T.); (A.E.); (O.-P.T.)
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2
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Tsoumani ME, Voyiatzaki C, Efstathiou A. Malaria Vaccines: From the Past towards the mRNA Vaccine Era. Vaccines (Basel) 2023; 11:1452. [PMID: 37766129 PMCID: PMC10536368 DOI: 10.3390/vaccines11091452] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 08/29/2023] [Accepted: 09/01/2023] [Indexed: 09/29/2023] Open
Abstract
Plasmodium spp. is the etiological agent of malaria, a life-threatening parasitic disease transmitted by infected mosquitoes. Malaria remains a major global health challenge, particularly in endemic regions. Over the years, various vaccine candidates targeting different stages of Plasmodium parasite life-cycle have been explored, including subunit vaccines, vectored vaccines, and whole organism vaccines with Mosquirix, a vaccine based on a recombinant protein, as the only currently approved vaccine for Plasmodium falciparum malaria. Despite the aforementioned notable progress, challenges such as antigenic diversity, limited efficacy, resistant parasites escaping protective immunity and the need for multiple doses have hindered the development of a highly efficacious malaria vaccine. The recent success of mRNA-based vaccines against SARS-CoV-2 has sparked renewed interest in mRNA vaccine platforms. The unique mRNA vaccine features, including their potential for rapid development, scalability, and flexibility in antigen design, make them a promising avenue for malaria vaccine development. This review provides an overview of the malaria vaccines' evolution from the past towards the mRNA vaccine era and highlights their advantages in overcoming the limitations of previous malaria vaccine candidates.
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Affiliation(s)
- Maria E. Tsoumani
- Department of Biomedical Sciences, University of West Attica, 12243 Aigaleo, Greece; (M.E.T.); (C.V.)
| | - Chrysa Voyiatzaki
- Department of Biomedical Sciences, University of West Attica, 12243 Aigaleo, Greece; (M.E.T.); (C.V.)
| | - Antonia Efstathiou
- Department of Biomedical Sciences, University of West Attica, 12243 Aigaleo, Greece; (M.E.T.); (C.V.)
- Immunology of Infection Group, Department of Microbiology, Hellenic Pasteur Institute, 11521 Athens, Greece
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3
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Efstathiou A, Smirlis D. Leishmania Protein Kinases: Important Regulators of the Parasite Life Cycle and Molecular Targets for Treating Leishmaniasis. Microorganisms 2021; 9:microorganisms9040691. [PMID: 33801655 PMCID: PMC8066228 DOI: 10.3390/microorganisms9040691] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [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: 03/08/2021] [Revised: 03/21/2021] [Accepted: 03/24/2021] [Indexed: 02/07/2023] Open
Abstract
Leishmania is a protozoan parasite of the trypanosomatid family, causing a wide range of diseases with different clinical manifestations including cutaneous, mucocutaneous and visceral leishmaniasis. According to WHO, one billion people are at risk of Leishmania infection as they live in endemic areas while there are 12 million infected people worldwide. Annually, 0.9-1.6 million new infections are reported and 20-50 thousand deaths occur due to Leishmania infection. As current chemotherapy for treating leishmaniasis exhibits numerous drawbacks and due to the lack of effective human vaccine, there is an urgent need to develop new antileishmanial therapy treatment. To this end, eukaryotic protein kinases can be ideal target candidates for rational drug design against leishmaniasis. Eukaryotic protein kinases mediate signal transduction through protein phosphorylation and their inhibition is anticipated to be disease modifying as they regulate all essential processes for Leishmania viability and completion of the parasitic life cycle including cell-cycle progression, differentiation and virulence. This review highlights existing knowledge concerning the exploitation of Leishmania protein kinases as molecular targets to treat leishmaniasis and the current knowledge of their role in the biology of Leishmania spp. and in the regulation of signalling events that promote parasite survival in the insect vector or the mammalian host.
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Rocha VPC, Dacher M, Young SA, Kolokousi F, Efstathiou A, Späth GF, Soares MBP, Smirlis D. Leishmania dual-specificity tyrosine-regulated kinase 1 (DYRK1) is required for sustaining Leishmania stationary phase phenotype. Mol Microbiol 2020; 113:983-1002. [PMID: 31975452 DOI: 10.1111/mmi.14464] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 01/13/2020] [Accepted: 01/16/2020] [Indexed: 01/05/2023]
Abstract
Although the multiplicative and growth-arrested states play key roles in Leishmania development, the regulators of these transitions are largely unknown. In an attempt to gain a better understanding of these processes, we characterised one member of a family of protein kinases with dual specificity, LinDYRK1, which acts as a stasis regulator in other organisms. LinDYRK1 overexpressing parasites displayed a decrease in proliferation and in cell cycle re-entry of arrested cells. Parasites lacking LinDYRK1 displayed distinct fitness phenotypes in logarithmic and stationary growth phases. In logarithmic growth phase, LinDYRK1-/- parasites proliferated better than control lines, supporting a role of this kinase in stasis, while in stationary growth phase, LinDYRK1-/- parasites had important defects as they rounded up, accumulated vacuoles and lipid bodies and displayed subtle but consistent differences in lipid composition. Moreover, they expressed less metacyclic-enriched transcripts, displayed increased sensitivity to complement lysis and a significant reduction in survival within peritoneal macrophages. The distinct LinDYRK1-/- growth phase phenotypes were mirrored by the distinct LinDYRK1 localisations in logarithmic (mainly in flagellar pocket area and endosomes) and late stationary phase (mitochondrion). Overall, this work provides first evidence for the role of a DYRK family member in sustaining promastigote stationary phase phenotype and infectivity.
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Affiliation(s)
- Vinícius Pinto Costa Rocha
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz (FIOCRUZ), Salvador, Brazil
- Centro de Biotecnologia e Terapia Celular, Hospital São Rafael, Salvador, Brazil
| | - Mariko Dacher
- Unité de Parasitologie Moléculaire et Signalisation, Department of Parasites and Insect Vectors, Institut Pasteur and INSERM U1201, Paris, France
| | - Simon Alan Young
- Biomedical Sciences Research Complex, School of Biology, The University of St. Andrews, St. Andrews, UK
| | - Foteini Kolokousi
- Molecular Parasitology Laboratory, Microbiology Department, Hellenic Pasteur Institute, Athens, Greece
| | - Antonia Efstathiou
- Molecular Parasitology Laboratory, Microbiology Department, Hellenic Pasteur Institute, Athens, Greece
| | - Gerald Frank Späth
- Unité de Parasitologie Moléculaire et Signalisation, Department of Parasites and Insect Vectors, Institut Pasteur and INSERM U1201, Paris, France
| | - Milena Botelho Pereira Soares
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz (FIOCRUZ), Salvador, Brazil
- Centro de Biotecnologia e Terapia Celular, Hospital São Rafael, Salvador, Brazil
| | - Despina Smirlis
- Molecular Parasitology Laboratory, Microbiology Department, Hellenic Pasteur Institute, Athens, Greece
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Efstathiou A, Meira CS, Gaboriaud-Kolar N, Bastos TM, Rocha VPC, Vougogiannopoulou K, Skaltsounis AL, Smirlis D, Soares MBP. Indirubin derivatives are potent and selective anti-Trypanosoma cruzi agents. Virulence 2019; 9:1658-1668. [PMID: 30387370 PMCID: PMC7000199 DOI: 10.1080/21505594.2018.1532242] [Citation(s) in RCA: 7] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Current treatment for combatting Chagas disease, a life-threatening illness caused by the kinetoplastid protozoan parasite Trypanosoma cruzi is inadequate, and thus the discovery of new antiparasitic compounds is of prime importance. Previous studies identified the indirubins, a class of ATP kinase inhibitors, as potent growth inhibitors of the related kinetoplastid Leishmania. Herein, we evaluated the inhibitory activity of a series of 69 indirubin analogues screened against T. cruzi trypomastigotes and intracellular amastigotes. Seven indirubins were identified as potent T. cruzi inhibitors (low μΜ, nM range). Cell death analysis of specific compounds [3'oxime-6-bromoindirubin(6-BIO) analogues 10, 11 and 17, bearing a bulky extension on the oxime moiety and one 7 substituted analogue 32], as evaluated by electron microscopy and flow cytometry, showed a different mode of action between compound 32 compared to the three 6-BIO oxime- substituted indirubins, suggesting that indirubins may kill the parasite by different mechanisms dependent on their substitution. Moreover, the efficacy of four compounds that show the most potent anti-parasitic effect in both trypomastigotes and intracellular amastigotes (10, 11, 17, 32), was evaluated in a mouse model of T. cruzi infection. Compound 11 (3ʹpiperazine-6-BIO) displayed the best in vivo efficacy (1/6 mortality, 94.5% blood parasitaemia reduction, 12 dpi) at a dose five times reduced over the reference drug benznidazole (20 mg/kg vs100 mg/kg). We propose 3ʹpiperazine-6-BIO as a potential lead for the development of new treatments of Chagas disease.
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Affiliation(s)
- Antonia Efstathiou
- a Molecular Parasitology Lab, Dpt of Microbiology , Hellenic Pasteur Institute , Athens , Greece
| | - Cássio Santana Meira
- b Laboratory of Tissue Engineering and Immunopharmacology , Instituto Gonçalo Moniz, Fundação Oswaldo Cruz (FIOCRUZ) , Salvador , BA , Brazil.,c Center of Biotechnology and Cell Therapy , Hospital São Rafael , Salvador , BA , Brazil
| | - Nicolas Gaboriaud-Kolar
- d Pharmacognosy and Pharmaceutical Chemistry Lab, Dpt of Pharmacy, Panepistimiopolis Zografou , University of Athens , Athens , Greece
| | - Tanira Matutino Bastos
- b Laboratory of Tissue Engineering and Immunopharmacology , Instituto Gonçalo Moniz, Fundação Oswaldo Cruz (FIOCRUZ) , Salvador , BA , Brazil.,c Center of Biotechnology and Cell Therapy , Hospital São Rafael , Salvador , BA , Brazil
| | - Vinícius Pinto Costa Rocha
- b Laboratory of Tissue Engineering and Immunopharmacology , Instituto Gonçalo Moniz, Fundação Oswaldo Cruz (FIOCRUZ) , Salvador , BA , Brazil.,c Center of Biotechnology and Cell Therapy , Hospital São Rafael , Salvador , BA , Brazil
| | - Konstantina Vougogiannopoulou
- d Pharmacognosy and Pharmaceutical Chemistry Lab, Dpt of Pharmacy, Panepistimiopolis Zografou , University of Athens , Athens , Greece
| | - Alexios-Leandros Skaltsounis
- d Pharmacognosy and Pharmaceutical Chemistry Lab, Dpt of Pharmacy, Panepistimiopolis Zografou , University of Athens , Athens , Greece
| | - Despina Smirlis
- a Molecular Parasitology Lab, Dpt of Microbiology , Hellenic Pasteur Institute , Athens , Greece
| | - Milena Botelho Pereira Soares
- b Laboratory of Tissue Engineering and Immunopharmacology , Instituto Gonçalo Moniz, Fundação Oswaldo Cruz (FIOCRUZ) , Salvador , BA , Brazil.,c Center of Biotechnology and Cell Therapy , Hospital São Rafael , Salvador , BA , Brazil
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6
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Mattila S, Pérez-Torres M, Efstathiou A, Mimica P, Fraser M, Kankare E, Alberdi A, Aloy MÁ, Heikkilä T, Jonker PG, Lundqvist P, Martí-Vidal I, Meikle WPS, Romero-Cañizales C, Smartt SJ, Tsygankov S, Varenius E, Alonso-Herrero A, Bondi M, Fransson C, Herrero-Illana R, Kangas T, Kotak R, Ramírez-Olivencia N, Väisänen P, Beswick RJ, Clements DL, Greimel R, Harmanen J, Kotilainen J, Nandra K, Reynolds T, Ryder S, Walton NA, Wiik K, Östlin G. A dust-enshrouded tidal disruption event with a resolved radio jet in a galaxy merger. Science 2018; 361:482-485. [PMID: 29903886 DOI: 10.1126/science.aao4669] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 06/01/2018] [Indexed: 11/02/2022]
Abstract
Tidal disruption events (TDEs) are transient flares produced when a star is ripped apart by the gravitational field of a supermassive black hole (SMBH). We have observed a transient source in the western nucleus of the merging galaxy pair Arp 299 that radiated >1.5 × 1052 erg at infrared and radio wavelengths but was not luminous at optical or x-ray wavelengths. We interpret this as a TDE with much of its emission reradiated at infrared wavelengths by dust. Efficient reprocessing by dense gas and dust may explain the difference between theoretical predictions and observed luminosities of TDEs. The radio observations resolve an expanding and decelerating jet, probing the jet formation and evolution around a SMBH.
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Affiliation(s)
- S Mattila
- Tuorla Observatory, Department of Physics and Astronomy, FI-20014 University of Turku, Finland. .,Finnish Centre for Astronomy with ESO (FINCA), FI-20014 University of Turku, Finland
| | - M Pérez-Torres
- Instituto de Astrofísica de Andalucía-Consejo Superior de Investigaciones Científicas (CSIC), P.O. Box 3004, 18008, Granada, Spain. .,Departamento de Física Teórica, Facultad de Ciencias, Universidad de Zaragoza, 50019, Zaragoza, Spain
| | - A Efstathiou
- School of Sciences, European University Cyprus, Diogenes Street, Engomi, 1516 Nicosia, Cyprus
| | - P Mimica
- Departament d'Astronomia i Astrofisica, Universitat de València Estudi General, 46100 Burjassot, València, Spain
| | - M Fraser
- School of Physics, O'Brien Centre for Science North, University College Dublin, Belfield, Dublin 4, Ireland.,Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK
| | - E Kankare
- Astrophysics Research Centre, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN, UK
| | - A Alberdi
- Instituto de Astrofísica de Andalucía-Consejo Superior de Investigaciones Científicas (CSIC), P.O. Box 3004, 18008, Granada, Spain
| | - M Á Aloy
- Departament d'Astronomia i Astrofisica, Universitat de València Estudi General, 46100 Burjassot, València, Spain
| | - T Heikkilä
- Tuorla Observatory, Department of Physics and Astronomy, FI-20014 University of Turku, Finland
| | - P G Jonker
- SRON, Netherlands Institute for Space Research, Sorbonnelaan 2, NL-3584 CA Utrecht, Netherlands.,Department of Astrophysics/Institute for Mathematics, Astrophysics and Particle Physics, Radboud University, P.O. Box 9010, 6500GL Nijmegen, Netherlands
| | - P Lundqvist
- Department of Astronomy and The Oskar Klein Centre, AlbaNova University Center, Stockholm University, SE-106 91 Stockholm, Sweden
| | - I Martí-Vidal
- Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, SE-439 92 Onsala, Sweden
| | - W P S Meikle
- Astrophysics Group, Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2AZ, UK
| | - C Romero-Cañizales
- Chinese Academy of Sciences South America Center for Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China.,Núcleo de Astronomía de la Facultad de Ingeniería y Ciencias, Universidad Diego Portales, Av. Ejército 441, 8370191 Santiago, Chile
| | - S J Smartt
- Astrophysics Research Centre, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN, UK
| | - S Tsygankov
- Tuorla Observatory, Department of Physics and Astronomy, FI-20014 University of Turku, Finland
| | - E Varenius
- Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, SE-439 92 Onsala, Sweden.,Jodrell Bank Centre for Astrophysics, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - A Alonso-Herrero
- Centro de Astrobiología (CSIC-INTA), ESAC Campus, E-28692 Villanueva de la Cañada, Madrid, Spain
| | - M Bondi
- Istituto di Radioastronomia - Istituto Nazionale di Astrofisica (INAF), Bologna, via P. Gobetti 101, 40129, Bologna, Italy
| | - C Fransson
- Department of Astronomy and The Oskar Klein Centre, AlbaNova University Center, Stockholm University, SE-106 91 Stockholm, Sweden
| | - R Herrero-Illana
- European Southern Observatory, Alonso de Córdova 3107, Vitacura, Casilla 19001, Santiago de Chile, Chile
| | - T Kangas
- Tuorla Observatory, Department of Physics and Astronomy, FI-20014 University of Turku, Finland.,Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
| | - R Kotak
- Tuorla Observatory, Department of Physics and Astronomy, FI-20014 University of Turku, Finland.,Astrophysics Research Centre, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN, UK
| | - N Ramírez-Olivencia
- Instituto de Astrofísica de Andalucía-Consejo Superior de Investigaciones Científicas (CSIC), P.O. Box 3004, 18008, Granada, Spain
| | - P Väisänen
- South African Astronomical Observatory, P.O. Box 9, Observatory 7935, Cape Town, South Africa.,Southern African Large Telescope, P.O. Box 9, Observatory 7935, Cape Town, South Africa
| | - R J Beswick
- Jodrell Bank Centre for Astrophysics, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - D L Clements
- Astrophysics Group, Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2AZ, UK
| | - R Greimel
- Institute of Physics, Department for Geophysics, Astrophysics, and Meteorology, NAWI Graz, Universitätsplatz 5, 8010 Graz, Austria
| | - J Harmanen
- Tuorla Observatory, Department of Physics and Astronomy, FI-20014 University of Turku, Finland
| | - J Kotilainen
- Finnish Centre for Astronomy with ESO (FINCA), FI-20014 University of Turku, Finland.,Tuorla Observatory, Department of Physics and Astronomy, FI-20014 University of Turku, Finland
| | - K Nandra
- Max-Planck-Institut für Extraterrestrische Physik, Giessenbachstraße, 85748, Garching, Germany
| | - T Reynolds
- Tuorla Observatory, Department of Physics and Astronomy, FI-20014 University of Turku, Finland
| | - S Ryder
- Australian Astronomical Observatory, 105 Delhi Rd, North Ryde, NSW 2113, Australia
| | - N A Walton
- Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK
| | - K Wiik
- Tuorla Observatory, Department of Physics and Astronomy, FI-20014 University of Turku, Finland
| | - G Östlin
- Department of Astronomy and The Oskar Klein Centre, AlbaNova University Center, Stockholm University, SE-106 91 Stockholm, Sweden
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Njock GBB, Grougnet R, Efstathiou A, Smirlis D, Genta-Jouve G, Michel S, Mbing JN, Kritsanida M. A Nitrile Glucoside and Biflavones from the Leaves of Campylospermum excavatum
(Ochnaceae). Chem Biodivers 2017; 14. [DOI: 10.1002/cbdv.201700241] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Accepted: 07/07/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Gaétan Bayiha Ba Njock
- Département de Chimie Organique; Faculté des Sciences; Université de Yaoundé I; BP 812 Yaoundé Cameroun
| | - Raphaël Grougnet
- Laboratoire de Pharmacognosie; UMR/CNRS 8638 COMETE; Faculté de Pharmacie de Paris; Université Paris Descartes; Sorbonne Paris Cité; 4 Avenue de l'Observatoire 75006 Paris France
| | - Antonia Efstathiou
- Laboratory of Molecular Parasitology; Department of Microbiology; Hellenic Pasteur Institute; 127 Vas. Sofias Ave 11521 Athens Greece
| | - Despina Smirlis
- Laboratory of Molecular Parasitology; Department of Microbiology; Hellenic Pasteur Institute; 127 Vas. Sofias Ave 11521 Athens Greece
| | - Grégory Genta-Jouve
- C-TAC, UMR/CNRS 8638 COMETE; Faculté de Pharmacie de Paris; Université Paris Descartes; Sorbonne Paris Cité; 4 Avenue de l'Observatoire 75006 Paris France
| | - Sylvie Michel
- Laboratoire de Pharmacognosie; UMR/CNRS 8638 COMETE; Faculté de Pharmacie de Paris; Université Paris Descartes; Sorbonne Paris Cité; 4 Avenue de l'Observatoire 75006 Paris France
| | - Joséphine Ngo Mbing
- Département de Chimie Organique; Faculté des Sciences; Université de Yaoundé I; BP 812 Yaoundé Cameroun
| | - Marina Kritsanida
- Laboratoire de Pharmacognosie; UMR/CNRS 8638 COMETE; Faculté de Pharmacie de Paris; Université Paris Descartes; Sorbonne Paris Cité; 4 Avenue de l'Observatoire 75006 Paris France
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8
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Zoidis G, Tsotinis A, Tsatsaroni A, Taylor MC, Kelly JM, Efstathiou A, Smirlis D, Fytas G. Lipophilic conformationally constrained spiro carbocyclic 2,6-diketopiperazine-1-acetohydroxamic acid analogues as trypanocidal and leishmanicidal agents: An extended SAR study. Chem Biol Drug Des 2017; 91:408-421. [PMID: 28834291 DOI: 10.1111/cbdd.13088] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 07/18/2017] [Accepted: 08/09/2017] [Indexed: 01/13/2023]
Abstract
We have previously described a number of lipophilic conformationally constrained spiro carbocyclic 2,6-diketopiperazine (2,6-DKP)-1-acetohydroxamic acids as potent antitrypanosomal agents. In this report, we extend the SAR analysis in this class of compounds with respect to in vitro growth inhibition of Trypanosoma and Leishmania parasites. Introduction of bulky hydrophobic substituents at the vicinal position of the basic nitrogen atom in the spiro carbocyclic 2,6-DKP ring system can provide analogues which are potently active against bloodstream form Trypanosoma brucei and exhibit significant activities toward Trypanosoma cruzi epimastogotes and Leishmania infantum promastigotes and intracellular amastigotes. In particular, compounds possessing a benzyl or 4-chlorobenzyl substituent were found to be the most active growth inhibitors, with activities in the low nanomolar and low micromolar ranges for T. brucei and L. infantum, respectively. The benzyl-substituted (S)-enantiomer was the most potent derivative against T. brucei (IC50 = 6.8 nm), T. cruzi (IC50 = 0.21 μm), and L. infantum promastigotes (IC50 = 2.67 μm) and intracellular amastigotes (IC50 = 2.60 μm). Moreover, the (R)-chiral benzyl-substituted derivative and its racemic counterpart displayed significant activities against L. donovani. Importantly, the active compounds show high selectivity in comparison with two mammalian cell lines.
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Affiliation(s)
- Grigoris Zoidis
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Athens, Greece
| | - Andrew Tsotinis
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Athens, Greece
| | - Alexandra Tsatsaroni
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Athens, Greece
| | - Martin C Taylor
- Department of Pathogen Molecular Biology, London School of Hygiene and Tropical Medicine, London, UK
| | - John M Kelly
- Department of Pathogen Molecular Biology, London School of Hygiene and Tropical Medicine, London, UK
| | - Antonia Efstathiou
- Laboratory of Molecular Parasitology, Department of Microbiology, Hellenic Pasteur Institute, Athens, Greece
| | - Despina Smirlis
- Laboratory of Molecular Parasitology, Department of Microbiology, Hellenic Pasteur Institute, Athens, Greece
| | - George Fytas
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Athens, Greece
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9
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Azevedo L, Faqueti L, Kritsanida M, Efstathiou A, Smirlis D, Franchi GC, Genta-Jouve G, Michel S, Sandjo LP, Grougnet R, Biavatti MW. Three new trixane glycosides obtained from the leaves of Jungia sellowii Less. using centrifugal partition chromatography. Beilstein J Org Chem 2016; 12:674-83. [PMID: 27340460 PMCID: PMC4902082 DOI: 10.3762/bjoc.12.68] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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: 12/08/2015] [Accepted: 03/22/2016] [Indexed: 11/23/2022] Open
Abstract
Jungia sellowii (Asteraceae) is a shrub that grows in Southern Brazil and polar extract of its leaves presents anti-inflammatory properties. Cyperane, guaiane, nortrixane, and trixane sesquiterpene types were reported as the main metabolites in Jungia species. This work aims to describe the isolation and identification of sesquiterpenes in the leaves of J. sellowii using liquid-liquid partition and centrifugal partition chromatography. Thus, the crude extract of fresh leaves of J. sellowii was partitioned with hexane, dichloromethane, ethyl acetate and butanol, respectively. The butanol fraction was then subjected to a selected ternary system optimized for the CPC (centrifugal partition chromatography): ethyl acetate-ethanol-water (9:2:10, v/v/v). The separation was carried out isocratically at a flow rate of 25 mL/min at 1200 rpm, affording seven fractions A to G. TLC of fractions B, C and F displayed a single spot corresponding to three new glycosylated sesquiterpenoids. Their structures were established by using spectroscopic data in comparison to those reported in the literature. Furthermore, the isolates were evaluated for their leishmanicidal and cytotoxic effects. No cytotoxic effect was observed against the three cancer cell lines (HL60, JURKAT and REH), but compound 1 showed a weak antiprotozoal activity. Liquid-liquid partition and CPC turned to be a versatile technique of glycoside purification which is environmentally friendly and requires a limited amount of organic solvents.
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Affiliation(s)
- Luíse Azevedo
- Programa de Pós-Graduação em Farmácia, Universidade Federal de Santa Catarina, UFSC, Florianópolis, SC, Brazil
| | - Larissa Faqueti
- Programa de Pós-Graduação em Farmácia, Universidade Federal de Santa Catarina, UFSC, Florianópolis, SC, Brazil
| | - Marina Kritsanida
- Laboratoire de Pharmacognosie UMR/CNRS 8638 COMETE, Université Paris Descartes, Sorbonne Paris Cité, Faculté des Sciences Pharmaceutiques et Biologiques, 4 Avenue de l’observatoire 75006 Paris, France
| | - Antonia Efstathiou
- Laboratory of Molecular Parasitology, Department of Microbiology, Hellenic Pasteur Institute, 127 Vas. Sofias Ave, 11521 Athens, Greece
| | - Despina Smirlis
- Laboratory of Molecular Parasitology, Department of Microbiology, Hellenic Pasteur Institute, 127 Vas. Sofias Ave, 11521 Athens, Greece
| | - Gilberto C Franchi
- Integrated Center for Childhood Onco-Hematological Investigation, State University of Campinas, P.O. Box 6141, 13083-970 Campinas, SP, Brazil
| | - Grégory Genta-Jouve
- Laboratoire de Pharmacognosie UMR/CNRS 8638 COMETE, Université Paris Descartes, Sorbonne Paris Cité, Faculté des Sciences Pharmaceutiques et Biologiques, 4 Avenue de l’observatoire 75006 Paris, France
| | - Sylvie Michel
- Laboratoire de Pharmacognosie UMR/CNRS 8638 COMETE, Université Paris Descartes, Sorbonne Paris Cité, Faculté des Sciences Pharmaceutiques et Biologiques, 4 Avenue de l’observatoire 75006 Paris, France
| | - Louis P Sandjo
- Programa de Pós-Graduação em Farmácia, Universidade Federal de Santa Catarina, UFSC, Florianópolis, SC, Brazil
| | - Raphaël Grougnet
- Laboratoire de Pharmacognosie UMR/CNRS 8638 COMETE, Université Paris Descartes, Sorbonne Paris Cité, Faculté des Sciences Pharmaceutiques et Biologiques, 4 Avenue de l’observatoire 75006 Paris, France
| | - Maique Weber Biavatti
- Programa de Pós-Graduação em Farmácia, Universidade Federal de Santa Catarina, UFSC, Florianópolis, SC, Brazil
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Bednarz-Knoll N, Efstathiou A, Gotzhein F, Wikman H, Mueller V, Kang Y, Pantel K. Potential Involvement of Jagged1 in Metastatic Progression of Human Breast Carcinomas. Clin Chem 2016; 62:378-86. [DOI: 10.1373/clinchem.2015.246686] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 12/02/2015] [Indexed: 11/06/2022]
Abstract
Abstract
BACKGROUND
Jagged1, the ligand of Notch, has been shown to be involved in formation of bone metastases in an experimental study. Here, clinical relevance of Jagged1 expression in tumor progression was assessed in human breast carcinomas.
METHODS
Jagged1 expression was evaluated by immunohistochemistry in 228 tumor tissue samples and compared to clinicopathologic parameters and patients' outcomes. Furthermore, circulating tumor cells (CTCs) from peripheral blood of 100 unmatched metastatic cancer patients with progressive disease were enriched using Ficoll density gradient centrifugation and detected by pan-keratin/Jagged1/CD45 immunofluorescent staining.
RESULTS
Jagged1 expression was detected in 50% of 228 tumors. Jagged1 expression was correlated with higher tumor grade (P = 0.047), vascular invasion (P = 0.026), luminal B subtype (P = 0.016), overexpression of Her-2 (P = 0.001), high Ki-67 expression (P = 0.035), and aldehyde dehydrogenase 1 (ALDH1) positivity (P = 0.013). Jagged 1 expression indicated shorter disease-free survival (DFS) (P = 0.040) and metastasis-free survival (P = 0.048) in lymph node–negative breast cancer for which it was the only independent predictor of DFS (multivariate analysis, P = 0.046). Tumors characterized by the strongest Jagged1 staining intensity (7.5% of cases) correlated with lymph node positivity (P = 0.037), metastatic relapse (P = 0.049), and higher number of disseminated tumor cells in bone marrow aspirates (P = 0.041). Twenty-one unmatched metastatic breast cancer patients with progressive disease were positive for CTCs, and 85.7% of the CTCs also expressed Jagged1. The presence of Jagged1(+) CTCs was significantly associated with shorter progression-free survival in patients treated with bisphosphonates (P = 0.013).
CONCLUSIONS
Jagged1 expression characterizes more aggressive breast carcinoma and might be involved in tumor cell dissemination, metastatic progression, and resistance to bone-targeting therapy in breast cancer patients.
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Affiliation(s)
- Natalia Bednarz-Knoll
- Department of Tumour Biology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Antonia Efstathiou
- Department of Tumour Biology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
- BONE-NET, European Training Network on Cancer Induced Bone Disease, 7th Framework Programme, EU
| | - Frauke Gotzhein
- Department of Tumour Biology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Harriet Wikman
- Department of Tumour Biology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Volkmar Mueller
- Department of Gynecology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Yibin Kang
- Department of Molecular Biology, Princeton University, Princeton, NJ
| | - Klaus Pantel
- Department of Tumour Biology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
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Gouzelou E, Tsoumani M, Ntalas I, Efstathiou A, Smirlis D, Goudevenos I, Tselepis A, Soteriadou K. The assessment of genetic polymorphisms and their potential association with aspirin resistance in a population of Greek patients with acute coronary syndrome. Atherosclerosis 2015. [DOI: 10.1016/j.atherosclerosis.2015.04.460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Bednarz-Knoll N, Efstathiou A, Gotzhein F, Wilkman H, Mueller V, Kang Y, Pantel K. 328 Jagged1 expression and its relevance in metastatic progression of breast cancers. Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)70454-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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13
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Efstathiou A, Gaboriaud-Kolar N, Smirlis D, Myrianthopoulos V, Vougogiannopoulou K, Alexandratos A, Kritsanida M, Mikros E, Soteriadou K, Skaltsounis AL. An inhibitor-driven study for enhancing the selectivity of indirubin derivatives towards leishmanial Glycogen Synthase Kinase-3 over leishmanial cdc2-related protein kinase 3. Parasit Vectors 2014; 7:234. [PMID: 24886176 PMCID: PMC4039064 DOI: 10.1186/1756-3305-7-234] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Accepted: 05/03/2014] [Indexed: 11/15/2022] Open
Abstract
Background In search of new antiparasitic agents for overcoming the limitations of current leishmaniasis chemotherapy, we have previously shown that 6-bromoindirubin-3'-oxime (6BIO) and several other 6-substituted analogues of indirubin, a naturally occurring bis-indole present in mollusks and plants, displayed reverse selectivity from the respective mammalian kinases, targeting more potently the leishmanial Cyclin-Dependent Kinase-1 (CDK1) homologue [cdc2-related protein kinase 3 (LCRK3)] over leishmanial Glycogen Synthase Kinase-3 (LGSK-3). This reversal of selectivity in Leishmania parasites compared to mammalian cells makes the design of specific indirubin-based LGSK-3 inhibitors difficult. In this context, the identification of compounds bearing specific substitutions that shift indirubin inhibition towards LGSK-3, previously found to be a potential drug target, over LCRK3 is imperative for antileishmanial targeted drug discovery. Methods A new in-house indirubin library, composed of 35 compounds, initially designed to target mammalian kinases (CDKs, GSK-3), was tested against Leishmania donovani promastigotes and intracellular amastigotes using the Alamar blue assay. Indirubins with antileishmanial activity were tested against LGSK-3 and LCRK3 kinases, purified from homologous expression systems. Flow cytometry (FACS) was used to measure the DNA content for cell-cycle analysis and the mode of cell death. Comparative structural analysis of the involved kinases was then performed using the Szmap algorithm. Results We have identified 7 new indirubin analogues that are selective inhibitors of LGSK-3 over LCRK3. These new inhibitors were also found to display potent antileishmanial activity with GI50 values of <1.5 μΜ. Surprisingly, all the compounds that displayed enhanced selectivity towards LGSK-3, were 6BIO analogues bearing an additional 3'-bulky amino substitution, namely a piperazine or pyrrolidine ring. A comparative structural analysis of the two aforementioned leishmanial kinases was subsequently undertaken to explain and rationalize the selectivity trend determined by the in vitro binding assays. Interestingly, the latter analysis showed that selectivity could be correlated with differences in kinase solvation thermo dynamics induced by minor sequence variations of the otherwise highly similar ATP binding pockets. Conclusions In conclusion, 3'-bulky amino substituted 6-BIO derivatives, which demonstrate enhanced specificity towards LGSK-3, represent a new scaffold for targeted drug development to treat leishmaniasis.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Alexios-Leandros Skaltsounis
- Laboratories of Pharmacognosy and Pharmaceutical Chemistry, Department of Pharmacy, University of Athens, Panepistimiopolis-Zografou, 15771 Athens, Greece.
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Efstathiou A, Pearson C, Farrah D, Rigopoulou D, Gracia-Carpio J, Verma A, Spoon HWW, Afonso J, Bernard-Salas J, Clements DL, Cooray A, Cormier D, Etxaluze M, Fischer J, Gonzalez-Alfonso E, Hurley P, Lebouteiller V, Oliver SJ, Rowan-Robinson M, Sturm E. Herschel observations and a model for IRAS 08572+3915: a candidate for the most luminous infrared galaxy in the local (z < 0.2) Universe. ACTA ACUST UNITED AC 2013. [DOI: 10.1093/mnrasl/slt131] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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15
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Alexandratos A, Clos J, Samiotaki M, Efstathiou A, Panayotou G, Soteriadou K, Smirlis D. The loss of virulence of histone H1 overexpressingLeishmania donovaniparasites is directly associated with a reduction of HSP83 rate of translation. Mol Microbiol 2013; 88:1015-31. [DOI: 10.1111/mmi.12240] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2013] [Indexed: 01/15/2023]
Affiliation(s)
- Alexandros Alexandratos
- Laboratory of Molecular Parasitology; Department of Microbiology; Hellenic Pasteur Institute; 127 Vas Sofias Ave. Athens Greece
- Chemistry Department; University of Ioannina; Ioannina Greece
| | - Joachim Clos
- Bernhard Nocht Institute for Tropical Medicine; Hamburg Germany
| | - Martina Samiotaki
- Biomedical Sciences Research Center; ‘Alexander Fleming’; Vari Greece
| | - Antonia Efstathiou
- Laboratory of Molecular Parasitology; Department of Microbiology; Hellenic Pasteur Institute; 127 Vas Sofias Ave. Athens Greece
| | - George Panayotou
- Biomedical Sciences Research Center; ‘Alexander Fleming’; Vari Greece
| | - Ketty Soteriadou
- Laboratory of Molecular Parasitology; Department of Microbiology; Hellenic Pasteur Institute; 127 Vas Sofias Ave. Athens Greece
| | - Despina Smirlis
- Laboratory of Molecular Parasitology; Department of Microbiology; Hellenic Pasteur Institute; 127 Vas Sofias Ave. Athens Greece
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Leondaritis G, Sarri T, Dafnis J, Efstathiou A, Galanopoulou D. Biochemical and genetic evidence for the presence of multiple phosphatidylinositol- and phosphatidylinositol 4,5-bisphosphate-specific phospholipases C in Tetrahymena. Chem Phys Lipids 2010. [DOI: 10.1016/j.chemphyslip.2010.05.089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Abstract
BACKGROUND Hemangiopericytoma is a rare mesenchymal neoplasm, accounting for about 1% of vascular tumors The tumor occurs most commonly in the skin, subcutaneous soft tissues, muscles of the extremities, retroperitoneum but rarely in the lung, trachea or mediastinum. CASE PRESENTATION A rare case of primary mediastinal hemangiopericytoma is presented. A 72-year-old woman was treated by complete surgical resection of the tumor. Details of the clinical and radiographic feature are presented. The patient's postoperative course was uneventful with no evidence of recurrence 9 months after the operation. CONCLUSION Hemangiopericytoma is an uncommon, potentially malignant tumor originating from pericytes in the small vessels and surgical radical excision is the treatment of choice, although the criteria for determining the area of resection have not been established. International literature has demonstrated that recurrent disease usually occurs within 2 years and therefore a long-term careful follow-up is required.
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Affiliation(s)
- A Chnaris
- Cardiothoracic Surgery Department, G. Papanikolaou General Hospital, Thessaloniki, Greece
| | - N Barbetakis
- Cardiothoracic Surgery Department, Theagenio Cancer Hospital, Thessaloniki, Greece
| | - A Efstathiou
- Cardiothoracic Surgery Department, Geniki Kliniki, Thessaloniki, Greece
| | - I Fessatidis
- Cardiothoracic Surgery Department, Geniki Kliniki, Thessaloniki, Greece
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18
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Barbetakis N, Efstathiou A, Xenikakis T, Konstantinidis H, Fessatidis I. An unusual cause of haemoptysis in a young male. Int Semin Surg Oncol 2006; 3:6. [PMID: 16522195 PMCID: PMC1420313 DOI: 10.1186/1477-7800-3-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2006] [Accepted: 03/07/2006] [Indexed: 12/12/2022]
Abstract
Inflammatory myofibroblastic tumours are reported to occur in a variety of sites, including the head and neck, abdominal organs, central nervous system and urinary tract. They only rarely occur in the lung. We report a case of a 25-year-old male admitted with haemoptysis. His chest radiograph showed a peripheral right lung opacity and computed tomography revealed a right lower lobe soft tissue density mass. Bronchoscopy and fine needle aspiration were unhelpful. a diagnosis of pulmonary carcinoma was made, and the patient underwent a right lower lobectomy. On pathology, the tumor was found to be an inflammatory pseudotumor. These lesion are extremely rare, constituting less than 1% of pulmonary malignancies, but are known to occur in young patients. We believe clinicians need to retain an index of suspicion for the presence of this disease in young patients, which can masquerade as more common malignancies.
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Affiliation(s)
- N Barbetakis
- Cardiothoracic Surgery Department, Geniki Kliniki – Euromedica, Thessaloniki, Greece
| | - A Efstathiou
- Cardiothoracic Surgery Department, Geniki Kliniki – Euromedica, Thessaloniki, Greece
| | - T Xenikakis
- Cardiothoracic Surgery Department, Geniki Kliniki – Euromedica, Thessaloniki, Greece
| | - H Konstantinidis
- Cardiothoracic Surgery Department, Geniki Kliniki – Euromedica, Thessaloniki, Greece
| | - I Fessatidis
- Cardiothoracic Surgery Department, Geniki Kliniki – Euromedica, Thessaloniki, Greece
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Lazou A, Markou T, Zioga M, Vasara E, Efstathiou A, Gaitanaki C. Dopamine mimics the cardioprotective effect of ischemic preconditioning via activation of α1- adrenoceptors in the isolated rat heart. Physiol Res 2006; 55:1-8. [PMID: 15857158 DOI: 10.33549/physiolres.930694] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The aim of the present study was to clarify whether pharmacological preconditioning with dopamine protects the heart against ischemia and whether this effect is mediated through dopaminergic receptors (D1 and D2) or alpha1-adrenoceptors. Isolated perfused rat hearts were either non-preconditioned, preconditioned with 5 min ischemia, or treated for 5 min with dopamine (1, 5 or 10 microM) before being subjected to 45 min of sustained ischemia followed by 60 min reperfusion. Postischemic functional recovery and infarct size were used as indices of the effects of ischemia. Treatment with the lower concentration of dopamine (1 microM), did not provide any protection to the ischemic myocardium. On the other hand, treatment with 5 microM dopamine resulted in significantly improved functional recovery, whereas administration of dopamine (10 microM) resulted in significantly improved functional recovery as well as reduction of infarct size. Pretreatment with the mixed D1/D2 dopaminergic receptor antagonist haloperidol or the beta-adrenoceptor selective antagonist propranolol did not attenuate the protective effect of pharmacological preconditioning with 10 microM dopamine with respect to both functional recovery and infarct size reduction. On the other hand, the cardioprotective effect of dopamine was blocked when the alpha1-adrenoceptor selective antagonist, prazosin, was administered. In conclusion, pharmacological preconditioning with dopamine protects the myocardium against ischemia and this effect seems to be mediated through activation of alpha1-adrenoceptors.
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Affiliation(s)
- A Lazou
- Laboratory of Animal Physiology, Dept. of Zoology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece.
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Barbetakis N, Efstathiou A, Efstathiou N, Papagiannopoulou P, Soulountsi V, Fessatidis I. A long-term survivor of Bland-White-Garland syndrome with systemic collateral supply: a case report and review of the literature. BMC Surg 2005; 5:23. [PMID: 16356181 PMCID: PMC1325261 DOI: 10.1186/1471-2482-5-23] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2005] [Accepted: 12/15/2005] [Indexed: 12/18/2022] Open
Abstract
Background land-White-Garland syndrome (anomalous origin of the left coronary artery from the pulmonary artery) is a rare disease which may result in myocardial infarction, congestive heart failure and sometimes death during the early infantile period. Case presentation: A succesfully treated case of a 45-year-old mother of 2 children with Bland-White-Garland syndrome and concomitant severe mitral regurgitation is presented. Subsequent therapy consisted of ligation of the anomalous origin of the left coronary artery, anastomosis of the left internal mammary artery to the left anterior descending branch and mitral valve replacement. Continuous blood flow from the left coronary artery ostium during extracorporeal circulation and aorta clamping suggested systemic collateral supply. Conclusions: Recognition and diagnosis of Bland-White-Garland syndrome is important due to its potentially life-threatening complications.
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Affiliation(s)
- N Barbetakis
- Cardiothoracic Surgery Department, Geniki Kliniki, Thessaloniki, Greece
| | - A Efstathiou
- Cardiothoracic Surgery Department, Geniki Kliniki, Thessaloniki, Greece
| | - N Efstathiou
- Cardiology Department, Geniki Kliniki, Thessaloniki, Greece
| | | | - V Soulountsi
- Intensive Care Unit, Geniki Kliniki, Thessaloniki, Greece
| | - I Fessatidis
- Cardiothoracic Surgery Department, Geniki Kliniki, Thessaloniki, Greece
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Barbetakis N, Xenikakis T, Efstathiou A, Vlahveis M, Fessatidis I. Pulmonary benign metastasizing leiomyoma. J Cardiovasc Surg (Torino) 2004; 45:399-400. [PMID: 15365527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
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Efstathiou A, Vlachveis M, Tsonis G, Asteri T, Psarakis A, Fessatidis IT. Does leukodepletion during elective cardiac surgery really influence the overall clinical outcome? J Cardiovasc Surg (Torino) 2003; 44:197-204. [PMID: 12813383] [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: 03/03/2023]
Abstract
AIM We examined the impact of leukocyte filtration during the entire bypass time on postoperative leukocytosis, perioperative hemorrhage and overall clinical outcome in patients undergoing elective cardiac surgery. METHODS Eighty patients who electively underwent cardiac surgery were randomly allocated to a leukocyte depletion group (n=40) or a control group (n=40). In patients of the leukocyte depletion group an arterial line filter with leukocyte depleting capacity (Pall LG6) was applied instead of a standard arterial line filter. White blood cells and platelet count were estimated preoperatively and at various times postoperatively. Postoperative clinical outcomes were also recorded. RESULTS Repeated measure analysis of variance between groups showed that leukocyte counts were significantly lower in the depletion group postoperatively (p=0.005) whereas no difference was found in the platelet counts (p=0.37). The catecholamine dose required at the time of weaning from cardiopulmonary bypass and during the first 12 postoperative hours was found to be lower in the leukodepletion group (p=0.027 and p=0.021, respectively). Furthermore leukodepleted patients showed a transient improvement in the oxygenation index (p=0.029) and a shorter period of mechanical ventilation (p<0.001). The incidences of postoperative complications were similar between the groups. No difference was observed in regard to postoperative blood loss (p=0.821) and amount of packed red blood cells required for transfusion during the first 24 hours (p=0.846). The duration of intensive care unit stay and of hospitalization were similar between the groups. CONCLUSION Leukocyte depletion contributes to early postoperative improvement in heart and lung function but does not influence significantly the overall clinical outcome of patients undergoing elective cardiac surgery.
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Affiliation(s)
- A Efstathiou
- Cardiothoracic Surgery Department, George Papanikolaou General Regional Hospital, Exohi, Thessaloniki, Greece
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Abstract
Congenital bronchogenic cysts of the lung and mediastinum develop from the ventral foregut during embryogenesis. Bronchogenic cysts are seldom seen in the adults and most are thought to be asymptomatic and free of complications unless they become infected or are large enough to cause pressure on contiguous vital structures such as the tracheal carina, the lung or the esophagus. We present the unique case of a 24-year-old man who developed respiratory symptoms after Salmonella enteritidis infected bronchogenic cyst following Salmonella gastroenteritis.
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Affiliation(s)
- G Kostopoulos
- Cardiothoracic Surgery Department, George Papanikolaou General Regional Hospital, 57010 Exohi, Thessaloniki, Greece.
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Efstathiou A, Seraskeris S, Papakonstantinou C, Aidonopoulos A, Lazou A. Differential effect of preconditioning on post-ischaemic myocardial performance in the absence of substantial infarction and in extensively infarcted rat hearts. Eur J Cardiothorac Surg 2001; 19:493-9. [PMID: 11306319 DOI: 10.1016/s1010-7940(01)00602-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES There is controversy concerning the beneficial effects of ischaemic preconditioning during short periods of ischaemia (stunning). The aim of the study was to investigate post-ischaemic myocardial performance after various periods of ischaemia in both non-preconditioned and preconditioned hearts and to compare these results with infarct volume estimation. METHODS Isolated perfused rat hearts were subjected to various periods of sustained ischaemia (15, 20, 30, and 45 min). Haemodynamic parameters, infarct size and lactate dehydrogenase (LDH) leakage were recorded in both preconditioned and non-preconditioned hearts. RESULTS After 15 min of ischaemia, preconditioned hearts revealed significantly lower developed pressure than non-preconditioned hearts (80+/-4.1 vs. 95+/-0.3%, P=0.02). In the 20 min ischaemia group, preconditioning resulted in non-significantly lower developed pressure (76+/-3.1% in preconditioned hearts vs. 87+/-5.3% in non-preconditioned hearts, P=0.11). In these groups infarct volume was small and not different between non-preconditioned and preconditioned hearts. After 30 min of ischaemia, preconditioning significantly improved developed pressure (66+/-3.1% in preconditioned and 44+/-5% in non-preconditioned hearts, P=0.002). LDH leakage was significantly higher in non-preconditioned hearts compared with preconditioned hearts (16+/-2.3 vs. 9.0+/-1.3, P=0.04), whereas infarct volume was not (12.5+/-0.8 and 9.8+/-1.5, respectively, P=0.1). Non-preconditioned hearts of this group, subjected to inotropic stimulation at the end of reperfusion, responded poorly. Significantly higher developed pressure was attained by preconditioned hearts (150+/-3.1 vs. 123+/-7.5%, P=0.01). After 45 min of ischaemia, preconditioning resulted in 69% limitation of infarct volume (P<0.0001) and 53% reduction in LDH release (P=0.009). Developed pressure was 57+/-8.5% in preconditioned hearts and 32+/-4.5% in non-preconditioned hearts (P=0.02). CONCLUSIONS When ischaemic insult results in minimally lethal injuries, preconditioned hearts do not have the advantage of not being prone to stunning rather than non-preconditioned. If ischaemic insult is potentially able to produce extensive infarction, improvement in post-ischaemic myocardial function is mainly due to infarct size limitation evoked by preconditioning.
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Affiliation(s)
- A Efstathiou
- Laboratory of Animal Physiology, Department of Zoology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki 54006, Greece
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Efstathiou A, Bauer J, Greene M, Held R. Altered reaching following adaptation to optical displacement of the hand. J Exp Psychol 1967; 73:113-20. [PMID: 6031650 DOI: 10.1037/h0024091] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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