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Marano RBM, Fernandes T, Manaia CM, Nunes O, Morrison D, Berendonk TU, Kreuzinger N, Tenson T, Corno G, Fatta-Kassinos D, Merlin C, Topp E, Jurkevitch E, Henn L, Scott A, Heß S, Slipko K, Laht M, Kisand V, Di Cesare A, Karaolia P, Michael SG, Petre AL, Rosal R, Pruden A, Riquelme V, Agüera A, Esteban B, Luczkiewicz A, Kalinowska A, Leonard A, Gaze WH, Adegoke AA, Stenstrom TA, Pollice A, Salerno C, Schwermer CU, Krzeminski P, Guilloteau H, Donner E, Drigo B, Libralato G, Guida M, Bürgmann H, Beck K, Garelick H, Tacão M, Henriques I, Martínez-Alcalá I, Guillén-Navarro JM, Popowska M, Piotrowska M, Quintela-Baluja M, Bunce JT, Polo-López MI, Nahim-Granados S, Pons MN, Milakovic M, Udikovic-Kolic N, Ory J, Ousmane T, Caballero P, Oliver A, Rodriguez-Mozaz S, Balcazar JL, Jäger T, Schwartz T, Yang Y, Zou S, Lee Y, Yoon Y, Herzog B, Mayrhofer H, Prakash O, Nimonkar Y, Heath E, Baraniak A, Abreu-Silva J, Choudhury M, Munoz LP, Krizanovic S, Brunetti G, Maile-Moskowitz A, Brown C, Cytryn E. A global multinational survey of cefotaxime-resistant coliforms in urban wastewater treatment plants. Environ Int 2020; 144:106035. [PMID: 32835921 DOI: 10.1016/j.envint.2020.106035] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 08/02/2020] [Accepted: 08/03/2020] [Indexed: 05/29/2023]
Abstract
The World Health Organization Global Action Plan recommends integrated surveillance programs as crucial strategies for monitoring antibiotic resistance. Although several national surveillance programs are in place for clinical and veterinary settings, no such schemes exist for monitoring antibiotic-resistant bacteria in the environment. In this transnational study, we developed, validated, and tested a low-cost surveillance and easy to implement approach to evaluate antibiotic resistance in wastewater treatment plants (WWTPs) by targeting cefotaxime-resistant (CTX-R) coliforms as indicators. The rationale for this approach was: i) coliform quantification methods are internationally accepted as indicators of fecal contamination in recreational waters and are therefore routinely applied in analytical labs; ii) CTX-R coliforms are clinically relevant, associated with extended-spectrum β-lactamases (ESBLs), and are rare in pristine environments. We analyzed 57 WWTPs in 22 countries across Europe, Asia, Africa, Australia, and North America. CTX-R coliforms were ubiquitous in raw sewage and their relative abundance varied significantly (<0.1% to 38.3%), being positively correlated (p < 0.001) with regional atmospheric temperatures. Although most WWTPs removed large proportions of CTX-R coliforms, loads over 103 colony-forming units per mL were occasionally observed in final effluents. We demonstrate that CTX-R coliform monitoring is a feasible and affordable approach to assess wastewater antibiotic resistance status.
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Affiliation(s)
- Roberto B M Marano
- Department of Agroecology and Plant Health, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel; Department of Soil Chemistry, Plant Nutrition and Microbiology, Institute of Soil Water and Environmental Sciences, Volcani Center, Agricultural Research Organization, Rishon Lezion, Israel
| | - Telma Fernandes
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Arquiteto Lobão Vital, 172, 4200-374 Porto, Portugal
| | - Célia M Manaia
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Arquiteto Lobão Vital, 172, 4200-374 Porto, Portugal
| | - Olga Nunes
- LEPABE, Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Donald Morrison
- School Applied Sciences, Edinburgh Napier University, EH11 4BN, UK
| | | | - Norbert Kreuzinger
- Vienna University of Technology, Institute for Water Quality and Resources Management, Vienna, Austria
| | - Tanel Tenson
- Institute of Technology, University of Tartu, Estonia
| | - Gianluca Corno
- CNR-IRSA Molecular Ecology Group, Largo Tonolli 50, 28922 Verbania, Italy
| | - Despo Fatta-Kassinos
- Civil and Environmental Engineering Department and Nireas International Water Research Center, University of Cyprus, P.O. Box 20537, CY-1678 Nicosia, Cyprus
| | | | - Edward Topp
- Agriculture and Agri-Food Canada, London Research and Development Centre (ON), Canada; Department of Biology, University of Western Ontario, London, ON, Canada
| | - Edouard Jurkevitch
- Department of Agroecology and Plant Health, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Leonie Henn
- School Applied Sciences, Edinburgh Napier University, EH11 4BN, UK
| | - Andrew Scott
- Agriculture and Agri-Food Canada, London Research and Development Centre (ON), Canada
| | - Stefanie Heß
- Institute of Hydrobiology, TU Dresden, Dresden, Germany; Institute of Microbiology, TU Dresden, Dresden, Germany
| | - Katarzyna Slipko
- Vienna University of Technology, Institute for Water Quality and Resources Management, Vienna, Austria
| | - Mailis Laht
- Institute of Technology, University of Tartu, Estonia; Estonian Environmental Research Centre, Estonia
| | - Veljo Kisand
- Institute of Technology, University of Tartu, Estonia
| | - Andrea Di Cesare
- CNR-IRSA Molecular Ecology Group, Largo Tonolli 50, 28922 Verbania, Italy
| | - Popi Karaolia
- Civil and Environmental Engineering Department and Nireas International Water Research Center, University of Cyprus, P.O. Box 20537, CY-1678 Nicosia, Cyprus
| | - Stella G Michael
- Civil and Environmental Engineering Department and Nireas International Water Research Center, University of Cyprus, P.O. Box 20537, CY-1678 Nicosia, Cyprus
| | - Alice L Petre
- Department of Chemical Engineering, University of Alcalá, E-28871 Alcalá de Henares, Madrid, Spain
| | - Roberto Rosal
- Department of Chemical Engineering, University of Alcalá, E-28871 Alcalá de Henares, Madrid, Spain
| | - Amy Pruden
- Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA, USA
| | - Virginia Riquelme
- Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA, USA
| | - Ana Agüera
- Solar Energy Research Centre (CIESOL), Joint Centre University of Almería-CIEMAT, 04120 Almería, Spain
| | - Belen Esteban
- Solar Energy Research Centre (CIESOL), Joint Centre University of Almería-CIEMAT, 04120 Almería, Spain
| | - Aneta Luczkiewicz
- Faculty of Civil and Environmental Engineering, Gdansk University of Technology, G. Narutowicza 11/12 street, 80-233 Gdańsk, Poland
| | - Agnieszka Kalinowska
- Faculty of Civil and Environmental Engineering, Gdansk University of Technology, G. Narutowicza 11/12 street, 80-233 Gdańsk, Poland
| | - Anne Leonard
- University of Exeter Medical School, European Centre for Environment and Human Health, Environment and Sustainability Institute, University of Exeter, Penryn campus, TR10 9FE, UK
| | - William H Gaze
- University of Exeter Medical School, European Centre for Environment and Human Health, Environment and Sustainability Institute, University of Exeter, Penryn campus, TR10 9FE, UK
| | - Anthony A Adegoke
- Institute for Water and Wastewater Technology, Durban University of Technology, Durban South Africa; Department of Microbiology, University of Uyo, Uyo, Nigeria
| | - Thor A Stenstrom
- Institute for Water and Wastewater Technology, Durban University of Technology, Durban South Africa
| | | | | | - Carsten U Schwermer
- Norwegian Institute for Water Research, Gaustadalléen 21, N-0349 Oslo, Norway
| | - Pawel Krzeminski
- Norwegian Institute for Water Research, Gaustadalléen 21, N-0349 Oslo, Norway
| | | | - Erica Donner
- Future Industries Institute, University of South Australia, Adelaide, SA 5001, Australia
| | - Barbara Drigo
- Future Industries Institute, University of South Australia, Adelaide, SA 5001, Australia
| | - Giovanni Libralato
- Department of Biology, University of Naples Federico II, via Cinthia 21, 80126 Naples, Italy
| | - Marco Guida
- Department of Biology, University of Naples Federico II, via Cinthia 21, 80126 Naples, Italy
| | - Helmut Bürgmann
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 6047 Kastanienbaum, Switzerland
| | - Karin Beck
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 6047 Kastanienbaum, Switzerland
| | - Hemda Garelick
- Department of Natural Sciences, Middlesex University, London NW4 4BT, UK
| | - Marta Tacão
- CESAM and Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193, Portugal
| | - Isabel Henriques
- CESAM and Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193, Portugal; University of Coimbra, Department of Life Sciences, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
| | - Isabel Martínez-Alcalá
- Department of Civil Engineering, Av. de los Jerónimos, 135, 30107 Guadalupe, Murcia, Spain
| | - Jose M Guillén-Navarro
- Department of Civil Engineering, Av. de los Jerónimos, 135, 30107 Guadalupe, Murcia, Spain
| | - Magdalena Popowska
- Institute of Microbiology, Department of Applied Microbiology, Faculty of Biology, University of Warsaw, Poland
| | - Marta Piotrowska
- Institute of Microbiology, Department of Applied Microbiology, Faculty of Biology, University of Warsaw, Poland
| | | | - Joshua T Bunce
- School of Engineering, Newcastle University, Newcastle Upon Tyne, UK
| | - Maria I Polo-López
- Solar Energy Research Centre (CIESOL), Joint Centre University of Almería-CIEMAT, 04120 Almería, Spain; Plataforma Solar de Almería - CIEMAT, P.O. Box 22, 04200 Tabernas, Almería, Spain
| | - Samira Nahim-Granados
- Solar Energy Research Centre (CIESOL), Joint Centre University of Almería-CIEMAT, 04120 Almería, Spain; Plataforma Solar de Almería - CIEMAT, P.O. Box 22, 04200 Tabernas, Almería, Spain
| | | | | | | | - Jérôme Ory
- Laboratoire "Microorganisme: Génome et Environnement", Université Clermont Auvergne, BP 10448, F-63000 Clermont-Ferrand, France; CNRS, UMR 6023, LMGE, F-63170 Campus Universitaire des Cézeaux, Clermont-Ferrand, France; Service d'hygiène hospitalière, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Traore Ousmane
- Laboratoire "Microorganisme: Génome et Environnement", Université Clermont Auvergne, BP 10448, F-63000 Clermont-Ferrand, France; CNRS, UMR 6023, LMGE, F-63170 Campus Universitaire des Cézeaux, Clermont-Ferrand, France; Service d'hygiène hospitalière, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | | | - Antoni Oliver
- Laboratori EMATSA, Ctra Valls Km 3, 43130 Tarragona, Spain
| | | | - Jose L Balcazar
- Catalan Institute for Water Research (ICRA), 17003 Girona, Spain
| | - Thomas Jäger
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, Germany
| | - Thomas Schwartz
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, Germany
| | - Ying Yang
- School of Marine Sciences, Sun Yat-sen University, Guangzhou, China
| | - Shichun Zou
- School of Marine Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yunho Lee
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Younggun Yoon
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Bastian Herzog
- Chair of Urban Water Systems Engineering, Technical University of Munich (TUM), Germany
| | - Heidrun Mayrhofer
- Chair of Urban Water Systems Engineering, Technical University of Munich (TUM), Germany
| | - Om Prakash
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science, Pune 411007, India
| | - Yogesh Nimonkar
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science, Pune 411007, India
| | - Ester Heath
- Jozef Stefan Institute, Jamova 39 1000 Ljubljana, Slovenia
| | - Anna Baraniak
- National Medicines Institute, Department of Molecular Microbiology, Chelmska 30/34, 00-725 Warsaw, Poland
| | - Joana Abreu-Silva
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Arquiteto Lobão Vital, 172, 4200-374 Porto, Portugal
| | - Manika Choudhury
- Department of Natural Sciences, Middlesex University, London NW4 4BT, UK
| | - Leonardo P Munoz
- Department of Natural Sciences, Middlesex University, London NW4 4BT, UK
| | | | - Gianluca Brunetti
- Future Industries Institute, University of South Australia, Adelaide, SA 5001, Australia
| | | | - Connor Brown
- Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA, USA
| | - Eddie Cytryn
- Department of Soil Chemistry, Plant Nutrition and Microbiology, Institute of Soil Water and Environmental Sciences, Volcani Center, Agricultural Research Organization, Rishon Lezion, Israel.
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Esteban B, Gebbeken N. A comparison of numerical modelling strategies in contact detonation scenarios with concrete targets. Int J CMEM 2016. [DOI: 10.2495/cmem-v4-n3-231-246] [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: 11/09/2022] Open
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Sánchez Peréz JA, Carra I, Sirtori C, Agüera A, Esteban B. Fate of thiabendazole through the treatment of a simulated agro-food industrial effluent by combined MBR/Fenton processes at μg/L scale. Water Res 2014; 51:55-63. [PMID: 24388831 DOI: 10.1016/j.watres.2013.07.039] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 07/22/2013] [Accepted: 07/24/2013] [Indexed: 06/03/2023]
Abstract
This study has been carried out to assess the performance of a combined system consisting of a membrane bioreactor (MBR) followed by an advanced oxidation process (Fenton/Photo-Fenton) for removing the fungicide thiabendazole (TBZ) in a simulated agro-food industrial wastewater. Previous studies have shown the presence of TBZ in the effluent of an agro-food industry treated by activated sludge in a sequencing batch reactor (SBR), thus reinforcing the need for alternative treatments for removal. In this study, a simulated agro-food industry effluent was enriched with 100 μg L(-1) TBZ and treated by combined MBR/Fenton and MBR/solar photo-Fenton systems. Samples were directly injected into a highly sensitive liquid chromatography-triple quadrupole-linear ion trap-mass spectrometer (LC-QqLiT-MS/MS) analytical system to monitor the degradation of TBZ even at low concentration levels (ng L(-1)). Results showed that the biological treatment applied was not effective in TBZ degradation, which remained almost unaltered; although most dissolved organic matter was biodegraded effectively. Fenton and solar photo-Fenton, were assayed as tertiary treatments. The experiments were run without any pH adjustment by using an iron dosage strategy in the presence of excess hydrogen peroxide. Both treatments resulted in a total degradation of TBZ, obtaining more than 99% removal in both cases. To assure the total elimination of contaminants in the treated waters, transformation products (TPs) of TBZ generated during Fenton degradation experiments were identified and monitored by liquid chromatography-quadrupole time-of-flight mass spectrometry (LC-QTOF-MS/MS). Up to four TPs could be identified. Two of them corresponded to mono-hydroxylated derivatives, typically generated under hydroxyl radicals driven processes. The other two corresponded with the hydrolysis of the TBZ molecule to yield benzoimidazole and thiazole-4-carboxamidine. All of them were also degraded during the treatment.
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Affiliation(s)
- J A Sánchez Peréz
- Department of Chemical Engineering, University of Almería, 04120 Almería, Spain; CIESOL, Joint Centre of the University of Almería-CIEMAT, 04120 Almería, Spain
| | - I Carra
- Department of Chemical Engineering, University of Almería, 04120 Almería, Spain; CIESOL, Joint Centre of the University of Almería-CIEMAT, 04120 Almería, Spain
| | - C Sirtori
- Universidade Federal da Integração Latino-Americana (UNILA), PO Box 2044, CEP 85867-970 Foz do Iguaçu, PR, Brazil
| | - A Agüera
- CIESOL, Joint Centre of the University of Almería-CIEMAT, 04120 Almería, Spain; Department of Chemistry and Physics, University of Almería, 04120 Almería, Spain
| | - B Esteban
- Department of Chemical Engineering, University of Almería, 04120 Almería, Spain; CIESOL, Joint Centre of the University of Almería-CIEMAT, 04120 Almería, Spain.
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Seguí M, Llararmendi J, Florián Gericó J, García Lopez M, Esteban B, Puertas Alvarez J, Adrover E, Ayuga S, Batista J, Blancas I. Multicentric observational study to assess clinical characteristics of HER2-positive breast cancer patients treated with adjuvant anti-HER2 therapy. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e11093] [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: 11/20/2022] Open
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Heras M, Fernández-Reyes MJ, Rodríguez A, Molina A, Esteban B, Alvarez-Ude F. [Acute renal failure in a patient with renal carcinoma treated with temsirolimus]. Nefrologia 2009; 29:612. [PMID: 19936012 DOI: 10.3265/nefrologia.2009.29.6.5463.en.full] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023] Open
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Grávalos C, García-Girón C, Salut A, León A, García-Carbonero R, Maurel J, Sevilla I, Esteban B, Ciruelos EM, Cortes-Funes H. TOMOX compared to FOLFOX4 as first-line treatment in patients (pts) with advanced colorectal cancer (ACRC): Results of a multicenter randomized phase II trial. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.3563] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- C. Grávalos
- Hosp 12 de Octubre, Madrid, Spain; Hosp Gen Yagüe, Burgos, Spain; Hosp Arnau de Vilanova, Lleida, Spain; Fundación Jiménez Díaz, Madrid, Spain; Hosp Severo Ochoa, Leganés, Spain; Hosp Clínic, Barcelona, Spain; Hosp Virgen de la Victoria, Málaga, Spain; Hosp Gen, Segovia, Spain
| | - C. García-Girón
- Hosp 12 de Octubre, Madrid, Spain; Hosp Gen Yagüe, Burgos, Spain; Hosp Arnau de Vilanova, Lleida, Spain; Fundación Jiménez Díaz, Madrid, Spain; Hosp Severo Ochoa, Leganés, Spain; Hosp Clínic, Barcelona, Spain; Hosp Virgen de la Victoria, Málaga, Spain; Hosp Gen, Segovia, Spain
| | - A. Salut
- Hosp 12 de Octubre, Madrid, Spain; Hosp Gen Yagüe, Burgos, Spain; Hosp Arnau de Vilanova, Lleida, Spain; Fundación Jiménez Díaz, Madrid, Spain; Hosp Severo Ochoa, Leganés, Spain; Hosp Clínic, Barcelona, Spain; Hosp Virgen de la Victoria, Málaga, Spain; Hosp Gen, Segovia, Spain
| | - A. León
- Hosp 12 de Octubre, Madrid, Spain; Hosp Gen Yagüe, Burgos, Spain; Hosp Arnau de Vilanova, Lleida, Spain; Fundación Jiménez Díaz, Madrid, Spain; Hosp Severo Ochoa, Leganés, Spain; Hosp Clínic, Barcelona, Spain; Hosp Virgen de la Victoria, Málaga, Spain; Hosp Gen, Segovia, Spain
| | - R. García-Carbonero
- Hosp 12 de Octubre, Madrid, Spain; Hosp Gen Yagüe, Burgos, Spain; Hosp Arnau de Vilanova, Lleida, Spain; Fundación Jiménez Díaz, Madrid, Spain; Hosp Severo Ochoa, Leganés, Spain; Hosp Clínic, Barcelona, Spain; Hosp Virgen de la Victoria, Málaga, Spain; Hosp Gen, Segovia, Spain
| | - J. Maurel
- Hosp 12 de Octubre, Madrid, Spain; Hosp Gen Yagüe, Burgos, Spain; Hosp Arnau de Vilanova, Lleida, Spain; Fundación Jiménez Díaz, Madrid, Spain; Hosp Severo Ochoa, Leganés, Spain; Hosp Clínic, Barcelona, Spain; Hosp Virgen de la Victoria, Málaga, Spain; Hosp Gen, Segovia, Spain
| | - I. Sevilla
- Hosp 12 de Octubre, Madrid, Spain; Hosp Gen Yagüe, Burgos, Spain; Hosp Arnau de Vilanova, Lleida, Spain; Fundación Jiménez Díaz, Madrid, Spain; Hosp Severo Ochoa, Leganés, Spain; Hosp Clínic, Barcelona, Spain; Hosp Virgen de la Victoria, Málaga, Spain; Hosp Gen, Segovia, Spain
| | - B. Esteban
- Hosp 12 de Octubre, Madrid, Spain; Hosp Gen Yagüe, Burgos, Spain; Hosp Arnau de Vilanova, Lleida, Spain; Fundación Jiménez Díaz, Madrid, Spain; Hosp Severo Ochoa, Leganés, Spain; Hosp Clínic, Barcelona, Spain; Hosp Virgen de la Victoria, Málaga, Spain; Hosp Gen, Segovia, Spain
| | - E. M. Ciruelos
- Hosp 12 de Octubre, Madrid, Spain; Hosp Gen Yagüe, Burgos, Spain; Hosp Arnau de Vilanova, Lleida, Spain; Fundación Jiménez Díaz, Madrid, Spain; Hosp Severo Ochoa, Leganés, Spain; Hosp Clínic, Barcelona, Spain; Hosp Virgen de la Victoria, Málaga, Spain; Hosp Gen, Segovia, Spain
| | - H. Cortes-Funes
- Hosp 12 de Octubre, Madrid, Spain; Hosp Gen Yagüe, Burgos, Spain; Hosp Arnau de Vilanova, Lleida, Spain; Fundación Jiménez Díaz, Madrid, Spain; Hosp Severo Ochoa, Leganés, Spain; Hosp Clínic, Barcelona, Spain; Hosp Virgen de la Victoria, Málaga, Spain; Hosp Gen, Segovia, Spain
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Perez Manga G, Garcia Bueno JM, Palombo H, Morales S, Méndez M, Esteban B. A phase II study of vinorelbine (VNR) and letrozole (LTZ) in aged women with metastatic breast cancer (MBC). J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.756] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- G. Perez Manga
- Hospital Gregorio Marañon, Madrid, Spain; Clinica Miramar, Palma de Mallorca, Spain; Clinica Remei, Barcelona, Spain; Hospital Arnau de Vilanova, Lerida, Spain; Hospital de Móstoles, Madrid, Spain; Hospital General de Segovia, Segovia, Spain
| | - J. M. Garcia Bueno
- Hospital Gregorio Marañon, Madrid, Spain; Clinica Miramar, Palma de Mallorca, Spain; Clinica Remei, Barcelona, Spain; Hospital Arnau de Vilanova, Lerida, Spain; Hospital de Móstoles, Madrid, Spain; Hospital General de Segovia, Segovia, Spain
| | - H. Palombo
- Hospital Gregorio Marañon, Madrid, Spain; Clinica Miramar, Palma de Mallorca, Spain; Clinica Remei, Barcelona, Spain; Hospital Arnau de Vilanova, Lerida, Spain; Hospital de Móstoles, Madrid, Spain; Hospital General de Segovia, Segovia, Spain
| | - S. Morales
- Hospital Gregorio Marañon, Madrid, Spain; Clinica Miramar, Palma de Mallorca, Spain; Clinica Remei, Barcelona, Spain; Hospital Arnau de Vilanova, Lerida, Spain; Hospital de Móstoles, Madrid, Spain; Hospital General de Segovia, Segovia, Spain
| | - M. Méndez
- Hospital Gregorio Marañon, Madrid, Spain; Clinica Miramar, Palma de Mallorca, Spain; Clinica Remei, Barcelona, Spain; Hospital Arnau de Vilanova, Lerida, Spain; Hospital de Móstoles, Madrid, Spain; Hospital General de Segovia, Segovia, Spain
| | - B. Esteban
- Hospital Gregorio Marañon, Madrid, Spain; Clinica Miramar, Palma de Mallorca, Spain; Clinica Remei, Barcelona, Spain; Hospital Arnau de Vilanova, Lerida, Spain; Hospital de Móstoles, Madrid, Spain; Hospital General de Segovia, Segovia, Spain
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Grávalos C, García-Girón C, León AI, Salud A, Esteban B, Sevilla I, Maurel J, Murias A, García-Rico E, Cortés-Funes HG. TOMOX compared to FOLFOX4 as first-line treatment in patients (pts) with advanced colorectal cancer (ACRC): Preliminary results of a multicenter randomized phase II trial. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.3599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- C. Grávalos
- Hospital Universitario 12 de Octubre, Madrid, Spain; Hospital General Yagüe, Burgos, Spain; Fundación Jiménez Díaz, Madrid, Spain; H. Arnau de Vilanova, Lleida, Spain; Hospital General de Segovia, Segovia, Spain; Hospital Virgen de la Victoria, Málaga, Spain; Hospital Clinic i Provincial, Barcelona, Spain; Hospital Insular de las Palmas, Las Palmas, Spain; Hospital de Montepríncipe, Madrid, Spain
| | - C. García-Girón
- Hospital Universitario 12 de Octubre, Madrid, Spain; Hospital General Yagüe, Burgos, Spain; Fundación Jiménez Díaz, Madrid, Spain; H. Arnau de Vilanova, Lleida, Spain; Hospital General de Segovia, Segovia, Spain; Hospital Virgen de la Victoria, Málaga, Spain; Hospital Clinic i Provincial, Barcelona, Spain; Hospital Insular de las Palmas, Las Palmas, Spain; Hospital de Montepríncipe, Madrid, Spain
| | - A. I. León
- Hospital Universitario 12 de Octubre, Madrid, Spain; Hospital General Yagüe, Burgos, Spain; Fundación Jiménez Díaz, Madrid, Spain; H. Arnau de Vilanova, Lleida, Spain; Hospital General de Segovia, Segovia, Spain; Hospital Virgen de la Victoria, Málaga, Spain; Hospital Clinic i Provincial, Barcelona, Spain; Hospital Insular de las Palmas, Las Palmas, Spain; Hospital de Montepríncipe, Madrid, Spain
| | - A. Salud
- Hospital Universitario 12 de Octubre, Madrid, Spain; Hospital General Yagüe, Burgos, Spain; Fundación Jiménez Díaz, Madrid, Spain; H. Arnau de Vilanova, Lleida, Spain; Hospital General de Segovia, Segovia, Spain; Hospital Virgen de la Victoria, Málaga, Spain; Hospital Clinic i Provincial, Barcelona, Spain; Hospital Insular de las Palmas, Las Palmas, Spain; Hospital de Montepríncipe, Madrid, Spain
| | - B. Esteban
- Hospital Universitario 12 de Octubre, Madrid, Spain; Hospital General Yagüe, Burgos, Spain; Fundación Jiménez Díaz, Madrid, Spain; H. Arnau de Vilanova, Lleida, Spain; Hospital General de Segovia, Segovia, Spain; Hospital Virgen de la Victoria, Málaga, Spain; Hospital Clinic i Provincial, Barcelona, Spain; Hospital Insular de las Palmas, Las Palmas, Spain; Hospital de Montepríncipe, Madrid, Spain
| | - I. Sevilla
- Hospital Universitario 12 de Octubre, Madrid, Spain; Hospital General Yagüe, Burgos, Spain; Fundación Jiménez Díaz, Madrid, Spain; H. Arnau de Vilanova, Lleida, Spain; Hospital General de Segovia, Segovia, Spain; Hospital Virgen de la Victoria, Málaga, Spain; Hospital Clinic i Provincial, Barcelona, Spain; Hospital Insular de las Palmas, Las Palmas, Spain; Hospital de Montepríncipe, Madrid, Spain
| | - J. Maurel
- Hospital Universitario 12 de Octubre, Madrid, Spain; Hospital General Yagüe, Burgos, Spain; Fundación Jiménez Díaz, Madrid, Spain; H. Arnau de Vilanova, Lleida, Spain; Hospital General de Segovia, Segovia, Spain; Hospital Virgen de la Victoria, Málaga, Spain; Hospital Clinic i Provincial, Barcelona, Spain; Hospital Insular de las Palmas, Las Palmas, Spain; Hospital de Montepríncipe, Madrid, Spain
| | - A. Murias
- Hospital Universitario 12 de Octubre, Madrid, Spain; Hospital General Yagüe, Burgos, Spain; Fundación Jiménez Díaz, Madrid, Spain; H. Arnau de Vilanova, Lleida, Spain; Hospital General de Segovia, Segovia, Spain; Hospital Virgen de la Victoria, Málaga, Spain; Hospital Clinic i Provincial, Barcelona, Spain; Hospital Insular de las Palmas, Las Palmas, Spain; Hospital de Montepríncipe, Madrid, Spain
| | - E. García-Rico
- Hospital Universitario 12 de Octubre, Madrid, Spain; Hospital General Yagüe, Burgos, Spain; Fundación Jiménez Díaz, Madrid, Spain; H. Arnau de Vilanova, Lleida, Spain; Hospital General de Segovia, Segovia, Spain; Hospital Virgen de la Victoria, Málaga, Spain; Hospital Clinic i Provincial, Barcelona, Spain; Hospital Insular de las Palmas, Las Palmas, Spain; Hospital de Montepríncipe, Madrid, Spain
| | - H. G. Cortés-Funes
- Hospital Universitario 12 de Octubre, Madrid, Spain; Hospital General Yagüe, Burgos, Spain; Fundación Jiménez Díaz, Madrid, Spain; H. Arnau de Vilanova, Lleida, Spain; Hospital General de Segovia, Segovia, Spain; Hospital Virgen de la Victoria, Málaga, Spain; Hospital Clinic i Provincial, Barcelona, Spain; Hospital Insular de las Palmas, Las Palmas, Spain; Hospital de Montepríncipe, Madrid, Spain
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9
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Sineshchekov V, Koppel' L, Esteban B, Hughes J, Lamparter T. Fluorescence investigation of the recombinant cyanobacterial phytochrome (Cph1) and its C-terminally truncated monomeric species (Cph1Delta2): implication for holoprotein assembly, chromophore-apoprotein interaction and photochemistry. J Photochem Photobiol B 2002; 67:39-50. [PMID: 12007466 DOI: 10.1016/s1011-1344(02)00282-8] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Recombinant dimeric full-length Cph1 holophytochrome and its C-terminally-truncated monomeric species [Cph1Delta2, comprising the chromophore-bearing N-terminal sensory module (residues 1 to 514)] from the cyanobacterium Synechocystis expressed in E. coli and reconstituted in vitro with phycocyanobilin (PCB) were investigated with the use of fluorescence spectroscopy and photochemistry in the temperature range from 85 to 293 K. Holoprotein assembly in Cph1 apparently proceeds via intermediate states with the emission maximum at 680-690 nm (I685) and 700 nm (I700) and a half-life time, at room temperature, of < or =5 s. Conversion of the putative I685 into mature Cph1 involves relaxation of the chromophore into a more flexible conformation. Cph1 and Cph1Delta2 were closely similar in their spectroscopic and photochemical characteristics (position of the emission band and its width, character of the temperature dependence of the fluorescence and activation energy of the fluorescence decay, kinetics and extent of the Pr conversion at low and ambient temperatures), suggesting that there is no immediate effect of the C-terminus on the photochemical properties of the chromophore in Cph1 and that chromophore-chromophore interactions in the dimer are not significant. The latter is also supported by the lack of energy transfer from the phycoerythrobilin (PEB) to PCB in the mixed PEB/PCB adduct of Cph1. At the same time, certain variations in the fluorescence and photochemical parameters of Cph1 with temperature of the sample and intensity of the excitation light and dependence of the emission spectra on excitation wavelength were observed. These variations are interpreted as a manifestation of the Cph1 heterogeneity which may be due to the existence of different conformers of the chromophore and photoproduct formation under excitation light.
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Affiliation(s)
- V Sineshchekov
- Biology Department, M.V. Lomonosov Moscow State University, 119899, Moscow, Russia.
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10
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Lamparter T, Esteban B, Hughes J. Phytochrome Cph1 from the cyanobacterium Synechocystis PCC6803. Purification, assembly, and quaternary structure. Eur J Biochem 2001; 268:4720-30. [PMID: 11532008 DOI: 10.1046/j.1432-1327.2001.02395.x] [Citation(s) in RCA: 92] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The phytochrome Cph1 from the cyanobacterium Synechocystis PCC6803 forms holoprotein adducts with close spectral similarity to plant phytochromes when autoassembled in vitro with bilin chromophores. Cph1 is a 85-kDa protein that acts as a light-regulated histidine kinase seemingly involved in 'two-component' signalling. This paper describes the improvement of Cph1 purification, estimation of the extinction coefficient of holo-Cph1, spectral analyses of the assembly procedure and studies on quaternary structure. During assembly with the natural chromophore phycocyanobilin (PCB), a red-shifted intermediate is observed. A similar result was obtained when phycoerythrobilin was used as chromophore. As shown by SDS/PAGE and Zn2+ fluorescence, the covalent attachment of PCB is blocked by 1 mM iodoacetamide, a cysteine-derivatizing agent. When PCB was incubated with blocked apo-Cph1, again a shoulder at longer wavelengths appeared. It is therefore proposed that the long-wavelength-absorbing form represents the protonated, noncovalently bound bilin. Biliverdin, which is neither protonated nor covalently attached, undergoes spectral changes in its blue-absorbing band upon incubation with apo-Cph1. On the basis of these data we therefore propose a three-step model for phytochrome autoassembly. Size-exclusion chromatography revealed different mobilities for the apoprotein, red-absorbing Cph1-PCB and far-red-absorbing Cph1-PCB. The major peaks of both holoprotein adducts had apparent molecular masses approximately 200 kDa, a result in agreement with the notion that autophosphorylation in sensory histidine kinases requires dimerization. When Cph1-PCB was further purified by preparative native electrophoresis, the mobility on size-exclusion chromatography was approximately 100 kDa, and it was found to have lost its kinase activity, results implying that the material had lost its capacity to dimerize.
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Affiliation(s)
- T Lamparter
- Freie Universitaet Berlin, Pflanzenphysiologie, Germany.
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11
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Sanchez V, Camarero J, Esteban B, Peter MJ, Green AR, Colado MI. The mechanisms involved in the long-lasting neuroprotective effect of fluoxetine against MDMA ('ecstasy')-induced degeneration of 5-HT nerve endings in rat brain. Br J Pharmacol 2001; 134:46-57. [PMID: 11522596 PMCID: PMC1572928 DOI: 10.1038/sj.bjp.0704230] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
1. It has been reported that co-administration of fluoxetine with 3,4-methylenedioxymethamphetamine (MDMA, 'ecstasy') prevents MDMA-induced degeneration of 5-HT nerve endings in rat brain. The mechanisms involved have now been investigated. 2. MDMA (15 mg kg(-1), i.p.) administration produced a neurotoxic loss of 5-HT and 5-hydroxyindoleacetic acid (5-HIAA) in cortex, hippocampus and striatum and a reduction in cortical [3H]-paroxetine binding 7 days later. 3. Fluoxetine (10 mg kg(-1), i.p., x2, 60 min apart) administered concurrently with MDMA or given 2 and 4 days earlier provided complete protection, and significant protection when given 7 days earlier. Fluvoxamine (15 mg kg(-1), i.p., x2, 60 min apart) only produced neuroprotection when administered concurrently. Fluoxetine (10 mg kg(-1), x2) markedly increased the K(D) and reduced the B(max) of cortical [3H]-paroxetine binding 2 and 4 days later. The B(max) was still decreased 7 days later, but the K(D) was unchanged. [3H]-Paroxetine binding characteristics were unchanged 24 h after fluvoxamine (15 mg kg(-1), x2). 4. A significant cerebral concentration of fluoxetine plus norfluoxetine was detected over the 7 days following fluoxetine administration. The fluvoxamine concentration had decreased markedly by 24 h. 5. Pretreatment with fluoxetine (10 mg kg(-1), x2) failed to alter cerebral MDMA accumulation compared to saline pretreated controls. 6. Neither fluoxetine or fluvoxamine altered MDMA-induced acute hyperthermia. 7. These data demonstrate that fluoxetine produces long-lasting protection against MDMA-induced neurodegeneration, an effect apparently related to the presence of the drug and its active metabolite inhibiting the 5-HT transporter. Fluoxetine does not alter the metabolism of MDMA or its rate of cerebral accumulation.
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Affiliation(s)
- V Sanchez
- Departamento de Farmacologia, Facultad de Medicina, Universidad Complutense, Madrid 28040, Spain
| | - J Camarero
- Departamento de Farmacologia, Facultad de Medicina, Universidad Complutense, Madrid 28040, Spain
| | - B Esteban
- Departamento de Farmacologia, Facultad de Medicina, Universidad Complutense, Madrid 28040, Spain
| | - M J Peter
- Departamento de Farmacologia, Facultad de Medicina, Universidad Complutense, Madrid 28040, Spain
| | - A R Green
- Pharmacology Research Group, School of Pharmacy, De Montfort University, Leicester LE1 9BH
- AstraZeneca R&D Charnwood, Bakewell Road, Loughborough LE11 5RH
| | - M I Colado
- Departamento de Farmacologia, Facultad de Medicina, Universidad Complutense, Madrid 28040, Spain
- Author for correspondence:
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12
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Colado MI, O'Shea E, Esteban B, Green AR. Studies on the neuroprotective effect of the enantiomers of AR-A008055, a compound structurally related to clomethiazole, on MDMA ("ecstasy")-induced neurodegeneration in rat brain. Psychopharmacology (Berl) 2001; 157:82-8. [PMID: 11512047 DOI: 10.1007/s002130100762] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [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] [Received: 10/28/2000] [Accepted: 03/06/2001] [Indexed: 10/27/2022]
Abstract
RATIONALE 3,4-Methylenedioxymethamphetamine (MDMA, "ecstasy") administration produces neurotoxic degeneration of 5-HT nerve endings in several regions of rat brain. Administration of the GABAmimetic drug clomethiazole protects against this damage. OBJECTIVE We wished to see whether the enantiomers of AR-A008055 (1-4-methyl-5-thiazolyl-1-phenyl-methylamine), a compound structurally related to clomethiazole, were also neuroprotective against MDMA-induced degeneration. METHODS (R)-(+)-AR-A008055 or (S)-(-)-AR-A008055 (100 mg/kg IP) was injected 5 min prior to and 55 min after MDMA (15 mg/kg IP) administration to Dark Agouti rats. Rectal temperature was measured during this time and the concentration of 5-HT and 5-HIAA measured in hippocampus, cortex and striatum 7 days later. [3H]-Paroxetine binding was also measured in cortex. RESULTS Both enantiomers abolished the acute MDMA-induced hyperthermia and attenuated the subsequent neurotoxic loss of 5-HT, 5-HIAA and [3H]-paroxetine binding. When rats given the enantiomer plus MDMA were warmed to keep their rectal temperature elevated to near that of animals given only MDMA, the neuroprotective effect of (S)-(-)-AR-A008055 was still seen, while the effect of (R)-(+)-AR-A008055 was abolished. Protection was also seen when (S)-(-)-AR-A008055 (50 mg/kg) was given, a dose which produced only a modest attenuation of MDMA-induced hyperthermia. CONCLUSIONS The current data suggest that a major proportion of the neuroprotective action of (S)-(-)-AR-A008055 did not involve an attenuating effect on MDMA-induced hyperthermia. The protection afforded by (R)-(+)-AR-A008055, which is not a GABA agonist, appears to be solely due to its action on body temperature, strengthening the contention that abolishing the acute MDMA-induced hypothermia can produce neuroprotection. Since (S)-(-)-AR-A008055 has a similar pharmacology to clomethiazole, these data suggest that drugs which increase GABAA receptor channel opening are neuroprotective against MDMA-induced damage.
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Affiliation(s)
- M I Colado
- Departamento de Farmacologia, Facultad de Medicina, Universidad Complutense, 28040 Madrid, Spain
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13
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Esteban B, O'Shea E, Camarero J, Sanchez V, Green AR, Colado MI. 3,4-Methylenedioxymethamphetamine induces monoamine release, but not toxicity, when administered centrally at a concentration occurring following a peripherally injected neurotoxic dose. Psychopharmacology (Berl) 2001; 154:251-60. [PMID: 11351932 DOI: 10.1007/s002130000645] [Citation(s) in RCA: 119] [Impact Index Per Article: 5.2] [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: 11/30/2022]
Abstract
RATIONALE There is good evidence that 3,4-methylenedioxymethamphetamine (MDMA)-induced neurotoxicity results from free radical formation. However, it is unclear whether it is the presence of MDMA or a metabolite in the brain that initiates this process. OBJECTIVE We wished to measure the concentration of MDMA in the brain following peripheral administration of neurotoxic doses and examine the effect on acute monoamine release and the subsequent neurotoxic loss in 5-hydroxytryptamine (5-HT) content when a high concentration of MDMA was infused into cerebral tissue. METHODS Selectively placed microdialysis probes were used to determine both the concentration of MDMA in the brain following peripheral injection and the degree of 5-HT release. Monoamines in dialysate and tissue were measured with standard HPLC techniques. RESULTS MDMA, administered intraperitoneally, at doses of 10 and 15 mg/kg, which produce neurodegeneration, resulted in an estimated cerebral extracellular concentration of MDMA of 11 and 20 microM, respectively. When MDMA (100-400 microM) was perfused through a selectively placed microdialysis probe it dose-dependently increased 5-HT release in the hippocampus and dopamine release in the striatum. Seven days after perfusion of MDMA the concentration of 5-HT and its metabolite, 5-hydroxyindoleacetic acid was unchanged in the ipsilateral side of the brain of normothermic rats and also in the brains of animals made hyperthermic to mimic the acute effect of MDMA given peripherally. In contrast, perfusion with 5,7-dihydroxytryptamine (400 microM) markedly decreased the cerebral 5-HT content. A second probe, also placed in the hippocampus at a distance of 1 mm from the main probe, revealed that during the perfusion of MDMA (400 microM) the estimated extracellular concentration of MDMA in the hippocampus was between 10.4 and 19.5 microM, i.e. in the range of concentrations observed after systemic injection of neurotoxic doses of MDMA. CONCLUSIONS These data demonstrate that MDMA when injected directly into the brain produces 5-HT release but no neurotoxicity, suggesting that it must be metabolised peripherally in order to produce compounds that induce free radical formation and neurotoxicity in the brain.
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Affiliation(s)
- B Esteban
- Departamento de Farmacología, Facultad de Medicina, Universidad Complutense, 28040 Madrid, Spain
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14
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O'Shea E, Esteban B, Camarero J, Green AR, Colado MI. Effect of GBR 12909 and fluoxetine on the acute and long term changes induced by MDMA ('ecstasy') on the 5-HT and dopamine concentrations in mouse brain. Neuropharmacology 2001; 40:65-74. [PMID: 11077072 DOI: 10.1016/s0028-3908(00)00106-4] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.4] [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: 11/15/2022]
Abstract
We examined the long term effect of 3,4 methylenedioxymethamphetamine (MDMA, 10, 20 and 30 mg/kg, i.p.) on the cerebral 5-hydroxytryptamine (5-HT) and dopamine content in Swiss Webster mice. Three injections of MDMA (20 or 30 mg/kg, i.p.) given 3 h apart produced a marked depletion in the striatal content of dopamine and its metabolites 3,4-dihydroxyphenylacetic acid (DOPAC) and homovanillic acid (HVA) 7 days later. None of the doses administered altered the concentration of 5-HT or its metabolite 5-hydroxyindoleacetic acid (5-HIAA) in several brain areas. Pre-treatment with the dopamine uptake inhibitor GBR 12909 (10 mg/kg, i.p.), 30 min before each of the three MDMA (30 mg/kg, i.p.) injections, completely prevented the long term loss in the striatal catechol concentrations. However, GBR 12909 (10 mg/kg, i.p.) not only failed to prevent the acute effects induced by MDMA (30 mg/kg x 3, i.p.) on dopamine metabolism 30 min later, but in fact potentiated them. The 5-HT uptake inhibitor, fluoxetine (10 mg/kg, i. p.) failed to prevent both the acute and long term dopaminergic deficits. MDMA (30 mg/kg x 3) altered the body temperature of the mice biphasically, producing a rapid hyperthermia followed by prolonged hypothermia. In contrast, MDMA (20 mg/kg x 3) produced an initial hypothermia followed by hyperthermia. The present experiments therefore appear to rule out any direct relationship between the neurotoxic effects of MDMA and its acute effects on body temperature in mice. Fluoxetine administered 30 min before each MDMA (30 mg/kg) injection prevented these temperature changes, while GBR 12909 was without effect. This suggests that the neuroprotective effect of GBR 12909 against MDMA-induced neurotoxicity is not directly related to its ability to inhibit the MDMA-induced acute effects on dopamine metabolism or alter the MDMA-induced temperature change. The data illustrate major differences in the neurotoxic profile of MDMA in mice and rats.
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Affiliation(s)
- E O'Shea
- Departamento de Farmacología, Facultad de Medicina, Universidad Complutense, 28040, Madrid, Spain
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Colado MI, Granados R, O'Shea E, Esteban B, Green AR. The acute effect in rats of 3,4-methylenedioxyethamphetamine (MDEA, "eve") on body temperature and long term degeneration of 5-HT neurones in brain: a comparison with MDMA ("ecstasy"). Pharmacol Toxicol 1999; 84:261-6. [PMID: 10401727 DOI: 10.1111/j.1600-0773.1999.tb01492.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Administration of a single dose of the recreationally used drug 3,4-methylenedioxyethamphetamine (MDEA or "eve") to Dark Agouti rats resulted in an acute dose-dependent hyperthermic response. The peak effect and duration of hyperthermia of a dose of MDEA of 35 mg/kg intraperitoneally was similar to a dose of 3,4-methylenedioxymethamphetamine (MDMA or "ecstasy") of 15 mg/kg intraperitoneally. Seven days later this dose of MDMA produced a marked (approximately 50%) loss of 5-HT and its metabolite 5-HIAA in cortex, hippocampus and striatum and a similar loss of [3H]-paroxetine binding in cortex: these losses reflecting the MDMA-induced neurotoxic degeneration of 5-HT nerve endings. In contrast, administration of MDEA (15, 25 or 35 mg/kg), even at the highest dose, produced only a 20% loss in cortex and hippocampus and no decrease in striatum. The neurotoxic effect of MDEA was only weakly dose-dependent. Neither MDEA (35 mg/kg) nor MDMA (15 mg/kg) altered striatal dopamine content 7 days later. MDEA appeared to have about half the potency of MDMA in inducing acute hyperthermia and 25% of the potency in inducing degeneration of cerebral 5-HT neurones. However since higher doses of MDEA (compared to MDMA) are probably necessary to induce mood changing effects, these data do not support any contention that this compound is a "safer" recreational drug than MDMA in terms of either acute toxicity or long term neurodegeneration.
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Affiliation(s)
- M I Colado
- Department of Pharmacology, Faculty of Medicine, Complutense University, Madrid, Spain.
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16
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Abstract
Administration of a dose of 15 mg/kg of the recreationally used drug 3,4-methylenedioxymethamphetamine (MDMA or "ecstasy") to Dark Agouti rats resulted in an acute hyperthermic response which was followed 7 days later by a marked (approximately 45%) loss of 5-HT and its metabolite 5-HIAA in cortex, hippocampus and striatum and a similar loss of [3H]-paroxetine binding in cortex. These losses reflect the MDMA-induced neurotoxic degeneration of 5-HT nerve endings. Administration of pentobarbitone (40 mg/kg) concurrently with MDMA produced a significant attenuation of the neurotoxic damage, but also acute hypothermia. When the temperature of the MDMA plus pentobarbitone-treated group was kept elevated to that of the MDMA-treated group by the use of a homeothermic blanket, the neuroprotective effect of pentobarbitone was lost. These data demonstrate that pentobarbitone appears to possess no intrinsic neuroprotective activity and the previously reported activity is due to a hypothermic action of the drug.
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Affiliation(s)
- M I Colado
- Departamento de Farmacologia, Facultad de Medicina, Universidad Complutense, Madrid, Spain.
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17
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Colado MI, O'Shea E, Esteban B, Granados R, Green AR. In vivo evidence against clomethiazole being neuroprotective against MDMA ('ecstasy')-induced degeneration of rat brain 5-HT nerve terminals by a free radical scavenging mechanism. Neuropharmacology 1999; 38:307-14. [PMID: 10218873 DOI: 10.1016/s0028-3908(98)00174-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [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: 10/18/2022]
Abstract
Clomethiazole is an effective neuroprotective agent against the degeneration of 5-HT neurones that follows administration of 3,4-methylenedioxymethamphetamine (MDMA or 'ecstasy'). Since there is good evidence that free radical formation resulting from auto-oxidation of MDMA metabolites is responsible for the degeneration we have examined whether clomethiazole is a free radical scavenger. MDMA (15 mg/kg i.p.) increased the formation of 2,3- and 2,5-dihydroxybenzoic acids (2,3-DHBA and 2,5-DHBA) from salicylic acid perfused through a microdialysis tube implanted in the hippocampus, indicating increased free radical formation. Clomethiazole (50 mg/kg i.p.) administered 5 min prior and 55 min post MDMA prevented both the acute MDMA-induced hyperthermia and the rise in 2,3- and 2,5-DHBA. However, when the temperature of the MDMA + clomethiazole treated rats was kept elevated to that of the MDMA treated rats with a homeothermic blanket there was no inhibition of the MDMA-induced increase in 2,3-DHBA or 2,5-DHBA. These data suggest firstly that free radical formation is inhibited when the acute MDMA-induced hyperthermia is prevented. Secondly the data further indicate that clomethiazole has no free radical scavenging activity since the drug produces substantial neuroprotection when MDMA + clomethiazole treated rats are kept hyperthermic. This conclusion was strengthened by our observation that clomethiazole is a weak inhibitor (IC50 > 1 mM) of lipid peroxidation in synaptosomes when it had been induced by addition of FeCl2 + ascorbic acid.
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Affiliation(s)
- M I Colado
- Departamento de Farmacologia, Facultad de Medicina, Universidad Complutense, Madrid, Spain.
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18
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Colado MI, O'Shea E, Granados R, Esteban B, Martín AB, Green AR. Studies on the role of dopamine in the degeneration of 5-HT nerve endings in the brain of Dark Agouti rats following 3,4-methylenedioxymethamphetamine (MDMA or 'ecstasy') administration. Br J Pharmacol 1999; 126:911-24. [PMID: 10193771 PMCID: PMC1571217 DOI: 10.1038/sj.bjp.0702373] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.5] [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] [Indexed: 11/08/2022] Open
Abstract
1. We investigated whether dopamine plays a role in the neurodegeneration of 5-hydroxytryptamine (5-HT) nerve endings occurring in Dark Agouti rat brain after 3,4-methylenedioxymethamphetamine (MDMA or 'ecstasy') administration. 2. Haloperidol (2 mg kg(-1) i.p.) injected 5 min prior and 55 min post MDMA (15 mg kg(-1) i.p.) abolished the acute MDMA-induced hyperthermia and attenuated the neurotoxic loss of 5-HT 7 days later. When the rectal temperature of MDMA + haloperidol treated rats was kept elevated, this protective effect was marginal. 3. MDMA (15 mg kg(-1)) increased the dopamine concentration in the dialysate from a striatal microdialysis probe by 800%. L-DOPA (25 mg kg(-1) i.p., plus benserazide, 6.25 mg kg(-1) i.p.) injected 2 h after MDMA (15 mg kg(-1)) enhanced the increase in dopamine in the dialysate, but subsequent neurodegeneration was unaltered. L-DOPA (25 mg kg(-1)) injected before a sub-toxic dose of MDMA (5 mg kg(-1)) failed to induce neurodegeneration. 4. The MDMA-induced increase in free radical formation in the hippocampus (indicated by increased 2,3- and 2,5-dihydroxybenzoic acid in a microdialysis probe perfused with salicylic acid) was unaltered by L-DOPA. 5. The neuroprotective drug clomethiazole (50 mg kg(-1) i.p.) did not influence the MDMA-induced increase in extracellular dopamine. 6. These data suggest that previous observations on the protective effect of haloperidol and potentiating effect of L-DOPA on MDMA-induced neurodegeneration may have resulted from effects on MDMA-induced hyperthermia. 7. The increased extracellular dopamine concentration following MDMA may result from effects of MDMA on dopamine re-uptake, monoamine oxidase and 5-HT release rather than an 'amphetamine-like' action on dopamine release, thus explaining why the drug does not induce degeneration of dopamine nerve endings.
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Affiliation(s)
- M I Colado
- Departamento de Farmacologia, Facultad de Medicina, Universidad Complutense, Madrid, Spain
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O'Shea E, Granados R, Esteban B, Colado MI, Green AR. The relationship between the degree of neurodegeneration of rat brain 5-HT nerve terminals and the dose and frequency of administration of MDMA ('ecstasy'). Neuropharmacology 1998; 37:919-26. [PMID: 9776387 DOI: 10.1016/s0028-3908(98)00029-x] [Citation(s) in RCA: 169] [Impact Index Per Article: 6.5] [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: 02/09/2023]
Abstract
The effect of varying the dose and frequency of administration of 3,4-methylenedioxymethamphetamine (MDMA or 'ecstasy') on both the acute hyperthermic response and the long term neurodegeneration of 5-hydroxytryptamine (5-HT) nerve terminals in the brain has been studied in Dark Agouti rats. A single injection (4-15 mg/kg i.p.) of MDMA produced immediate dose-related hyperthermia and a dose-related decrease in 5-HT, 5-hydroxyindoleacetic acid (5-HIAA) and [3H]paroxetine binding in regions of the brain 7 days later, with a dose of 4 mg/kg having no degenerative effect. This dose was also without effect when given once daily for 4 days, but produced a marked loss of [3H]paroxetine binding and indole concentration ( approximately 55%) when given twice daily for 4 days. When a dose of 4 mg/kg was given twice weekly for 8 weeks it had no effect on these serotoninergic markers, despite a clear anorectic effect of the drug being seen. These data demonstrate that MDMA-induced neurodegeneration is related to both the dose and frequency of administration and indicate that damage to 5-HT neurones can occur in the absence of a hyperthermic response to the drug. We suggest that damage occurs when endogenous free radical scavenging mechanisms become overwhelmed or exhausted.
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Affiliation(s)
- E O'Shea
- Departamento de farmacologia, Facultad de Medicina, Universidad Complutense, Madrid, Spain
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Colado MI, Granados R, O'Shea E, Esteban B, Green AR. Role of hyperthermia in the protective action of clomethiazole against MDMA ('ecstasy')-induced neurodegeneration, comparison with the novel NMDA channel blocker AR-R15896AR. Br J Pharmacol 1998; 124:479-84. [PMID: 9647471 PMCID: PMC1565414 DOI: 10.1038/sj.bjp.0701859] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
1. The immediate effect of administration of 3,4-methylenedioxymethamphetamine (MDMA or 'ecstasy') on rectal temperature and the effect of putative neuroprotective agents on this change has been examined in rats. The influence of the temperature changes on the long term MDMA-induced neurodegeneration of cerebral 5-hydroxytryptamine (5-HT) nerve terminals was also examined. 2. The novel low affinity N-methyl-D-aspartate (NMDA) receptor channel blocker AR-R15896AR (20 mg kg(-1), i.p.) given 5 min before and 55 min after MDMA (15 mg kg(-1), i.p.) did not prevent the MDMA-induced hyperthermia and did not alter either the MDMA-induced neurodegenerative loss of 5-HT and 5-hydroxyindoleacetic acid (5-HIAA) in cortex, striatum and hippocampus or loss of [3H]-paroxetine binding in cortex 7 days later. 3. The neuroprotective agent clomethiazole (50 mg kg(-1), i.p.) given 5 min before and 55 min after MDMA (15 mg kg(-1)) abolished the MDMA-induced hyperthermic response and markedly attenuated the loss of 5-HT, 5-HIAA and [3H]-paroxetine binding in the brain regions examined 7 days later. 4. When rats treated with MDMA plus clomethiazole were kept at high ambient temperature for 5 h post-MDMA, thereby keeping their body temperature elevated to near that seen in rats given MDMA alone, the MDMA-induced loss of 5-HT, 5-HIAA and [3H]-paroxetine was still attenuated. However, the protection (39%) afforded by the clomethiazole administration was less than seen in rats kept at normal ambient temperature (75%). 5. These data support the proposals of others that NMDA receptor antagonists are neuroprotective against MDMA-induced degeneration only if they induce hypothermia and further suggest that increased glutamate activity may not be involved in the neurotoxic action of MDMA. 6. These data further demonstrate that a proportion of the neuroprotective action of clomethiazole is due to an effect on body temperature but that, in addition, the compound protects against MDMA-induced damage by an unrelated mechanism.
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Affiliation(s)
- M I Colado
- Departamento de Farmacologia, Facultad de Medicina, Universidad Complutense, Madrid, Spain
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López C, Arranz F, Alija V, Esteban B, Cerezo S, Feyjoo M, Guevara S, Alonso A, Pérez Manga G. 364 Long-term survivors after chemotherapy (CT) in metastatic breast cancer (MBC). a retrospective study. Eur J Cancer 1995. [DOI: 10.1016/0959-8049(95)95617-f] [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: 12/01/2022]
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Esteban B, Arranz F, Alija V, López C, Erustes M, Feyjoo M, López P, Alonso A, Pérez Manga G. 357 Long-term survivors after hormonotherapy (HT) in metastatic breast cancer (MBC). A retrospective study. Eur J Cancer 1995. [DOI: 10.1016/0959-8049(95)95610-i] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Sádaba C, Esteban B, Gastañares MJ, Lantero M, Borque L. [Practical approach to bacteremia]. Enferm Infecc Microbiol Clin 1994; 12:41. [PMID: 8155756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Cifuentes L, Catalina F, Garcia-Vicente J, Esteban B. Electron microscopy and x-ray diffraction of precipitated urinary calcium phosphates. Br J Urol 1967; 39:450-5. [PMID: 6054670 DOI: 10.1111/j.1464-410x.1967.tb09827.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [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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