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Abad-Fau A, Sevilla E, Oro A, Martín-Burriel I, Moreno B, Morales M, Bolea R. Multidrug resistance in pathogenic Escherichia coli isolates from urinary tract infections in dogs, Spain. Front Vet Sci 2024; 11:1325072. [PMID: 38585298 PMCID: PMC10996866 DOI: 10.3389/fvets.2024.1325072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 02/12/2024] [Indexed: 04/09/2024] Open
Abstract
Escherichia coli (E. coli) is a pathogen frequently isolated in cases of urinary tract infections (UTIs) in both humans and dogs and evidence exists that dogs are reservoirs for human infections. In addition, E. coli is associated to increasing antimicrobial resistance rates. This study focuses on the analysis of antimicrobial resistance and the presence of selected virulence genes in E. coli isolates from a Spanish dog population suffering from UTI. This collection of isolates showed an extremely high level of phenotypic resistance to 1st-3rd generation cephalosporins, followed by penicillins, fluoroquinolones and amphenicols. Apart from that, 13.46% of them were considered extended-spectrum beta-lactamase producers. An alarmingly high percentage (71.15%) of multidrug resistant isolates were also detected. There was a good correlation between the antimicrobial resistance genes found and the phenotypic resistance expressed. Most of the isolates were classified as extraintestinal pathogenic E. coli, and two others harbored virulence factors related to diarrheagenic pathotypes. A significant relationship between low antibiotic resistance and high virulence factor carriage was found, but the mechanisms behind it are still poorly understood. The detection of high antimicrobial resistance rates to first-choice treatments highlights the need of constant antimicrobial resistance surveillance, as well as continuous revision of therapeutic guidelines for canine UTI to adapt them to changes in antimicrobial resistance patterns.
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Affiliation(s)
- Ana Abad-Fau
- Departamento de Patología Animal, Facultad de Veterinaria, Instituto Agroalimentario de Aragón-IA2, Universidad de Zaragoza, Zaragoza, Spain
| | - Eloisa Sevilla
- Departamento de Patología Animal, Facultad de Veterinaria, Instituto Agroalimentario de Aragón-IA2, Universidad de Zaragoza, Zaragoza, Spain
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, Universidad de Zaragoza, Zaragoza, Spain
| | - Ainara Oro
- Departamento de Patología Animal, Facultad de Veterinaria, Instituto Agroalimentario de Aragón-IA2, Universidad de Zaragoza, Zaragoza, Spain
| | - Inmaculada Martín-Burriel
- Laboratorio de Genética Bioquímica, Facultad de Veterinaria, Instituto Agroalimentario de Aragon, Universidad de Zaragoza, Zaragoza, Spain
| | - Bernardino Moreno
- Departamento de Patología Animal, Facultad de Veterinaria, Instituto Agroalimentario de Aragón-IA2, Universidad de Zaragoza, Zaragoza, Spain
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, Universidad de Zaragoza, Zaragoza, Spain
| | - Mariano Morales
- Departamento de Patología Animal, Facultad de Veterinaria, Instituto Agroalimentario de Aragón-IA2, Universidad de Zaragoza, Zaragoza, Spain
- Albéitar Laboratories, Zaragoza, Spain
| | - Rosa Bolea
- Departamento de Patología Animal, Facultad de Veterinaria, Instituto Agroalimentario de Aragón-IA2, Universidad de Zaragoza, Zaragoza, Spain
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, Universidad de Zaragoza, Zaragoza, Spain
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Sola D, Betancor M, Marco Lorente PA, Pérez Lázaro S, Barrio T, Sevilla E, Marín B, Moreno B, Monzón M, Acín C, Bolea R, Badiola JJ, Otero A. Diagnosis in Scrapie: Conventional Methods and New Biomarkers. Pathogens 2023; 12:1399. [PMID: 38133284 PMCID: PMC10746075 DOI: 10.3390/pathogens12121399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 11/24/2023] [Accepted: 11/24/2023] [Indexed: 12/23/2023] Open
Abstract
Scrapie, a naturally occurring prion disease affecting goats and sheep, comprises classical and atypical forms, with classical scrapie being the archetype of transmissible spongiform encephalopathies. This review explores the challenges of scrapie diagnosis and the utility of various biomarkers and their potential implications for human prion diseases. Understanding these biomarkers in the context of scrapie may enable earlier prion disease diagnosis in humans, which is crucial for effective intervention. Research on scrapie biomarkers bridges the gap between veterinary and human medicine, offering hope for the early detection and improved management of prion diseases.
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Affiliation(s)
- Diego Sola
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, IA2, Universidad de Zaragoza, 50013 Zaragoza, Spain; (D.S.)
| | - Marina Betancor
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, IA2, Universidad de Zaragoza, 50013 Zaragoza, Spain; (D.S.)
| | - Paula A. Marco Lorente
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, IA2, Universidad de Zaragoza, 50013 Zaragoza, Spain; (D.S.)
| | - Sonia Pérez Lázaro
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, IA2, Universidad de Zaragoza, 50013 Zaragoza, Spain; (D.S.)
| | - Tomás Barrio
- Unité Mixte de Recherche de l’Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement1225 Interactions Hôtes-Agents Pathogènes, École Nationale Vétérinaire de Toulouse, 31076 Toulouse, France
| | - Eloisa Sevilla
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, IA2, Universidad de Zaragoza, 50013 Zaragoza, Spain; (D.S.)
| | - Belén Marín
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, IA2, Universidad de Zaragoza, 50013 Zaragoza, Spain; (D.S.)
| | - Bernardino Moreno
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, IA2, Universidad de Zaragoza, 50013 Zaragoza, Spain; (D.S.)
| | - Marta Monzón
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, IA2, Universidad de Zaragoza, 50013 Zaragoza, Spain; (D.S.)
| | - Cristina Acín
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, IA2, Universidad de Zaragoza, 50013 Zaragoza, Spain; (D.S.)
| | - Rosa Bolea
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, IA2, Universidad de Zaragoza, 50013 Zaragoza, Spain; (D.S.)
| | - Juan J. Badiola
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, IA2, Universidad de Zaragoza, 50013 Zaragoza, Spain; (D.S.)
| | - Alicia Otero
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, IA2, Universidad de Zaragoza, 50013 Zaragoza, Spain; (D.S.)
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Betancor M, Marín B, Otero A, Hedman C, Romero A, Barrio T, Sevilla E, Douet JY, Huor A, Badiola JJ, Andréoletti O, Bolea R. Detection of classical BSE prions in asymptomatic cows after inoculation with atypical/Nor98 scrapie. Vet Res 2023; 54:89. [PMID: 37794450 PMCID: PMC10548751 DOI: 10.1186/s13567-023-01225-2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 09/19/2023] [Indexed: 10/06/2023] Open
Abstract
The emergence of bovine spongiform encephalopathy (BSE) prions from atypical scrapie has been recently observed upon experimental transmission to rodent and swine models. This study aimed to assess whether the inoculation of atypical scrapie could induce BSE-like disease in cattle. Four calves were intracerebrally challenged with atypical scrapie. Animals were euthanized without clinical signs of prion disease and tested negative for PrPSc accumulation by immunohistochemistry and western blotting. However, an emergence of BSE-like prion seeding activity was detected during in vitro propagation of brain samples from the inoculated animals. These findings suggest that atypical scrapie may represent a potential source of BSE infection in cattle.
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Affiliation(s)
- Marina Betancor
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, Instituto Agroalimentario de Aragón - IA2, Universidad de Zaragoza, 50013, Zaragoza, Spain
| | - Belén Marín
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, Instituto Agroalimentario de Aragón - IA2, Universidad de Zaragoza, 50013, Zaragoza, Spain
| | - Alicia Otero
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, Instituto Agroalimentario de Aragón - IA2, Universidad de Zaragoza, 50013, Zaragoza, Spain.
| | - Carlos Hedman
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, Instituto Agroalimentario de Aragón - IA2, Universidad de Zaragoza, 50013, Zaragoza, Spain
| | - Antonio Romero
- Servicio de Cirugía y Medicina Equina, Hospital Veterinario, Universidad de Zaragoza, 50013, Zaragoza, Spain
| | - Tomás Barrio
- UMR INRAE ENVT 1225 Interactions Hôtes-Agents Pathogènes, École Nationale Vétérinaire de Toulouse, 31076, Toulouse, France
| | - Eloisa Sevilla
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, Instituto Agroalimentario de Aragón - IA2, Universidad de Zaragoza, 50013, Zaragoza, Spain
| | - Jean-Yves Douet
- UMR INRAE ENVT 1225 Interactions Hôtes-Agents Pathogènes, École Nationale Vétérinaire de Toulouse, 31076, Toulouse, France
| | - Alvina Huor
- UMR INRAE ENVT 1225 Interactions Hôtes-Agents Pathogènes, École Nationale Vétérinaire de Toulouse, 31076, Toulouse, France
| | - Juan José Badiola
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, Instituto Agroalimentario de Aragón - IA2, Universidad de Zaragoza, 50013, Zaragoza, Spain
| | - Olivier Andréoletti
- UMR INRAE ENVT 1225 Interactions Hôtes-Agents Pathogènes, École Nationale Vétérinaire de Toulouse, 31076, Toulouse, France
| | - Rosa Bolea
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, Instituto Agroalimentario de Aragón - IA2, Universidad de Zaragoza, 50013, Zaragoza, Spain
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Badiola JJ, Otero A, Sevilla E, Marín B, García Martínez M, Betancor M, Sola D, Pérez Lázaro S, Lozada J, Velez C, Chiner-Oms Á, Comas I, Cancino-Muñoz I, Monleón E, Monzón M, Acín C, Bolea R, Moreno B. SARS-CoV-2 Outbreak on a Spanish Mink Farm: Epidemiological, Molecular, and Pathological Studies. Front Vet Sci 2022; 8:805004. [PMID: 35127883 PMCID: PMC8814420 DOI: 10.3389/fvets.2021.805004] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 12/21/2021] [Indexed: 01/29/2023] Open
Abstract
Farmed minks have been reported to be highly susceptible to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and may represent a risk to humans. In this study, we describe the first outbreak of SARS-CoV-2 occurred on a mink farm in Spain, between June and July 2020, involving 92,700 animals. The outbreak started shortly after some farm workers became seropositive for SARS-CoV-2. Minks showed no clinical signs compatible with SARS-CoV-2 infection throughout the outbreak. Samples from 98 minks were collected for histopathological, serological, and molecular studies. Twenty out of 98 (20.4%) minks were positive by RT-qPCR and 82 out 92 (89%) seroconverted. This finding may reflect a rapid spread of the virus at the farm with most of the animals overcoming the infection. Additionally, SARS-CoV-2 was detected by RT-qPCR in 30% of brain samples from positive minks. Sequencing analysis showed that the mink sequences were not closely related with the other mink SARS-CoV-2 sequences available, and that this mink outbreak has its probable origin in one of the genetic variants that were prevalent in Spain during the first COVID-19 epidemic wave. Histological studies revealed bronchointerstitial pneumonia in some animals. Immunostaining of viral nucleocapsid was also observed in nasal turbinate tissue. Farmed minks could therefore constitute an important SARS-CoV-2 reservoir, contributing to virus spread among minks and humans. Consequently, continuous surveillance of mink farms is needed.
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Affiliation(s)
- Juan José Badiola
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, Universidad de Zaragoza, Instituto Agroalimentario de Aragón (IA2), Instituto de Investigación Sanitaria de Aragón (IISA), Zaragoza, Spain
| | - Alicia Otero
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, Universidad de Zaragoza, Instituto Agroalimentario de Aragón (IA2), Instituto de Investigación Sanitaria de Aragón (IISA), Zaragoza, Spain
- *Correspondence: Alicia Otero
| | - Eloisa Sevilla
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, Universidad de Zaragoza, Instituto Agroalimentario de Aragón (IA2), Instituto de Investigación Sanitaria de Aragón (IISA), Zaragoza, Spain
| | - Belén Marín
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, Universidad de Zaragoza, Instituto Agroalimentario de Aragón (IA2), Instituto de Investigación Sanitaria de Aragón (IISA), Zaragoza, Spain
| | - Mirta García Martínez
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, Universidad de Zaragoza, Instituto Agroalimentario de Aragón (IA2), Instituto de Investigación Sanitaria de Aragón (IISA), Zaragoza, Spain
| | - Marina Betancor
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, Universidad de Zaragoza, Instituto Agroalimentario de Aragón (IA2), Instituto de Investigación Sanitaria de Aragón (IISA), Zaragoza, Spain
| | - Diego Sola
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, Universidad de Zaragoza, Instituto Agroalimentario de Aragón (IA2), Instituto de Investigación Sanitaria de Aragón (IISA), Zaragoza, Spain
| | - Sonia Pérez Lázaro
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, Universidad de Zaragoza, Instituto Agroalimentario de Aragón (IA2), Instituto de Investigación Sanitaria de Aragón (IISA), Zaragoza, Spain
| | - Jenny Lozada
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, Universidad de Zaragoza, Instituto Agroalimentario de Aragón (IA2), Instituto de Investigación Sanitaria de Aragón (IISA), Zaragoza, Spain
| | - Carolina Velez
- Facultad de Ciencias Veterinarias, Universidad Nacional de La Pampa, General Pico, Argentina
| | - Álvaro Chiner-Oms
- Instituto de Biomedicina de Valencia-Consejo Superior de Investigaciones Científicas (IBV-CSIC), Valencia, Spain
| | - Iñaki Comas
- Instituto de Biomedicina de Valencia-Consejo Superior de Investigaciones Cientìficas (IBV-CSIC), CIBER in Epidemiology and Public Health, Valencia, Spain
| | - Irving Cancino-Muñoz
- Instituto de Biomedicina de Valencia-Consejo Superior de Investigaciones Científicas (IBV-CSIC), Valencia, Spain
| | - Eva Monleón
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, Universidad de Zaragoza, Instituto Agroalimentario de Aragón (IA2), Instituto de Investigación Sanitaria de Aragón (IISA), Zaragoza, Spain
| | - Marta Monzón
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, Universidad de Zaragoza, Instituto Agroalimentario de Aragón (IA2), Instituto de Investigación Sanitaria de Aragón (IISA), Zaragoza, Spain
| | - Cristina Acín
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, Universidad de Zaragoza, Instituto Agroalimentario de Aragón (IA2), Instituto de Investigación Sanitaria de Aragón (IISA), Zaragoza, Spain
| | - Rosa Bolea
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, Universidad de Zaragoza, Instituto Agroalimentario de Aragón (IA2), Instituto de Investigación Sanitaria de Aragón (IISA), Zaragoza, Spain
| | - Bernardino Moreno
- Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Facultad de Veterinaria, Universidad de Zaragoza, Instituto Agroalimentario de Aragón (IA2), Instituto de Investigación Sanitaria de Aragón (IISA), Zaragoza, Spain
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Moreno B, Bolea R, Andrés-Lasheras S, Sevilla E, Samper S, Morales M, Vargas A, Chirino-Trejo M, Badiola JJ. Antimicrobial Susceptibilities and Phylogenetic Analyses of Enterococcus hirae Isolated from Broilers with Valvular Endocarditis. Avian Dis 2020; 63:318-324. [PMID: 31251533 DOI: 10.1637/11986-102418-reg.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 01/22/2019] [Indexed: 11/05/2022]
Abstract
Enterococcus hirae is a zoonotic Enterococcus species that causes opportunistic infections in both humans and animals and can be transmitted by contact with animals or through contaminated food. The aim of this study was to investigate the importance of E. hirae in broilers with endocarditis, as well as the antimicrobial resistance patterns and genetic relatedness of the isolates. A total of 477 three- to five-week-old broilers were studied during five fattening periods on a farm with mortality due to endocarditis. Endocarditis was observed in 27 chickens (5.66%), and samples were taken for pathological, microbiological, and molecular studies. Lesions were mainly found in the right atrioventricular valve and corresponded with a fibrinous endocarditis. Enterococcus hirae was identified in all cases. Pulsed-field gel electrophoresis results showed clonality among some isolates, with one pulsotype harboring 11 isolates that were found throughout the study. Most of the isolates showed multi-drug-resistant phenotypes. These results confirm that E. hirae is a significant cause of endocarditis in broilers, and suggest that broilers may be important carriers of antimicrobial-resistant E. hirae that might enter into the food chain.
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Affiliation(s)
- Bernardino Moreno
- Centro de Investigación en Encefalopatías y Enfermedades Transmisibles Emergentes (CIEETE), Facultad de Veterinaria, Universidad de Zaragoza, 50013 Zaragoza, Spain, .,Unidad de Microbiología e Inmunología, Departamento de Patología Animal, Facultad de Veterinaria, Universidad de Zaragoza, 50013 Zaragoza, Spain, .,Instituto Agroalimentario de Aragón-IA2 (Universidad de Zaragoza-CITA), Zaragoza, Spain,
| | - Rosa Bolea
- Centro de Investigación en Encefalopatías y Enfermedades Transmisibles Emergentes (CIEETE), Facultad de Veterinaria, Universidad de Zaragoza, 50013 Zaragoza, Spain.,Unidad de Microbiología e Inmunología, Departamento de Patología Animal, Facultad de Veterinaria, Universidad de Zaragoza, 50013 Zaragoza, Spain.,Instituto Agroalimentario de Aragón-IA2 (Universidad de Zaragoza-CITA), Zaragoza, Spain
| | - Sara Andrés-Lasheras
- Unidad de Microbiología e Inmunología, Departamento de Patología Animal, Facultad de Veterinaria, Universidad de Zaragoza, 50013 Zaragoza, Spain
| | - Eloisa Sevilla
- Unidad de Microbiología e Inmunología, Departamento de Patología Animal, Facultad de Veterinaria, Universidad de Zaragoza, 50013 Zaragoza, Spain.,Instituto Agroalimentario de Aragón-IA2 (Universidad de Zaragoza-CITA), Zaragoza, Spain
| | - Sofía Samper
- Instituto Aragonés de Ciencias de la Salud, Hospital Universitario Miguel Servet, Fundación Instituto de Investigación Sanitaria de Aragón, Ciber Enfermedades Respiratorias, 50009 Zaragoza, Spain
| | - Mariano Morales
- Unidad de Microbiología e Inmunología, Departamento de Patología Animal, Facultad de Veterinaria, Universidad de Zaragoza, 50013 Zaragoza, Spain
| | - Antonia Vargas
- Centro de Investigación en Encefalopatías y Enfermedades Transmisibles Emergentes (CIEETE), Facultad de Veterinaria, Universidad de Zaragoza, 50013 Zaragoza, Spain.,Instituto Agroalimentario de Aragón-IA2 (Universidad de Zaragoza-CITA), Zaragoza, Spain
| | - Manuel Chirino-Trejo
- Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchetwan, Canada
| | - Juan José Badiola
- Centro de Investigación en Encefalopatías y Enfermedades Transmisibles Emergentes (CIEETE), Facultad de Veterinaria, Universidad de Zaragoza, 50013 Zaragoza, Spain.,Instituto Agroalimentario de Aragón-IA2 (Universidad de Zaragoza-CITA), Zaragoza, Spain
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Sevilla E, Mainar-Jaime RC, Moreno B, Martín-Burriel I, Morales M, Andrés-Lasheras S, Chirino-Trejo M, Badiola JJ, Bolea R. Antimicrobial resistance among canine enteric Escherichia coli isolates and prevalence of attaching-effacing and extraintestinal pathogenic virulence factors in Spain. Acta Vet Hung 2020; 68:1-7. [PMID: 32384068 DOI: 10.1556/004.2020.00013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 11/17/2019] [Indexed: 11/19/2022]
Abstract
The aim of this study was to estimate the prevalence of antimicrobial resistance (AMR) in Escherichia coli from a dog population in Spain and assess specific virulence factors. Susceptibility to 22 antimicrobials was tested along with the production of extended-spectrum β-lactamases (ESBLs) and AmpC in faecal isolates from 100 dogs. Virulence-related genes associated with attaching and effacing E. coli (eae, Stx1, Stx2) and extraintestinal pathogenic E. coli - ExPEC - (papC, hlyA and cnf1) were detected by PCR. At least one kind of AMR was observed in 73% of the isolates. The highest prevalences corresponded to penicillin (45%), aminoglycoside (40%) and non-extended spectrum cephalosporin (39%) classes. Multidrug resistance (MDR) was observed in 53.4% of the resistant isolates. No resistance to colistin was found. Production of ESBL/AmpC enzymes was detected in 5% of E. coli. Shiga toxin-producing E. coli were not observed, enteropathogenic E. coli were identified in only 12% of them, and ExPEC were found in 25%. Dog faeces can be a source of E. coli strains potentially presenting a threat to humans through their virulence factors or AMR. The non-hygienic keeping of animals may increase the risk of colonisation of such pathogens in humans.
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Affiliation(s)
- Eloisa Sevilla
- 1Departamento de Patología Animal, Facultad de Veterinaria, Instituto Agroalimentario de Aragón – IA2 – (Universidad de Zaragoza–CITA), Zaragoza, 50013, Spain
| | - Raúl C. Mainar-Jaime
- 1Departamento de Patología Animal, Facultad de Veterinaria, Instituto Agroalimentario de Aragón – IA2 – (Universidad de Zaragoza–CITA), Zaragoza, 50013, Spain
| | - Bernardino Moreno
- 1Departamento de Patología Animal, Facultad de Veterinaria, Instituto Agroalimentario de Aragón – IA2 – (Universidad de Zaragoza–CITA), Zaragoza, 50013, Spain
- 2Centro de Encefalopatías y Enfermedades Transmisibles Emergentes (CEETE), Facultad de Veterinaria, Universidad de Zaragoza, Zaragoza, Spain
| | - Inmaculada Martín-Burriel
- 3Laboratorio de Genética Bioquímica (LAGENBIO), Facultad de Veterinaria, Instituto Agroalimentario de Aragón – IA2 – (Universidad de Zaragoza–CITA), Zaragoza, Spain
| | - Mariano Morales
- 1Departamento de Patología Animal, Facultad de Veterinaria, Instituto Agroalimentario de Aragón – IA2 – (Universidad de Zaragoza–CITA), Zaragoza, 50013, Spain
| | - Sara Andrés-Lasheras
- 4Agriculture and Agri-Food Canada, Lethbridge Research and Development Centre, Lethbridge, Canada
| | - Manuel Chirino-Trejo
- 5Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada
| | - Juan J. Badiola
- 1Departamento de Patología Animal, Facultad de Veterinaria, Instituto Agroalimentario de Aragón – IA2 – (Universidad de Zaragoza–CITA), Zaragoza, 50013, Spain
- 2Centro de Encefalopatías y Enfermedades Transmisibles Emergentes (CEETE), Facultad de Veterinaria, Universidad de Zaragoza, Zaragoza, Spain
| | - Rosa Bolea
- 1Departamento de Patología Animal, Facultad de Veterinaria, Instituto Agroalimentario de Aragón – IA2 – (Universidad de Zaragoza–CITA), Zaragoza, 50013, Spain
- 2Centro de Encefalopatías y Enfermedades Transmisibles Emergentes (CEETE), Facultad de Veterinaria, Universidad de Zaragoza, Zaragoza, Spain
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Cappello S, Cruz Viggi C, Yakimov M, Rossetti S, Matturro B, Molina L, Segura A, Marqués S, Yuste L, Sevilla E, Rojo F, Sherry A, Mejeha OK, Head IM, Malmquist L, Christensen JH, Kalogerakis N, Aulenta F. Combining electrokinetic transport and bioremediation for enhanced removal of crude oil from contaminated marine sediments: Results of a long-term, mesocosm-scale experiment. Water Res 2019; 157:381-395. [PMID: 30974287 DOI: 10.1016/j.watres.2019.03.094] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [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: 07/12/2018] [Revised: 03/27/2019] [Accepted: 03/30/2019] [Indexed: 05/23/2023]
Abstract
Marine sediments represent an important sink of harmful petroleum hydrocarbons after an accidental oil spill. Electrobioremediation techniques, which combine electrokinetic transport and biodegradation processes, represent an emerging technological platform for a sustainable remediation of contaminated sediments. Here, we describe the results of a long-term mesocosm-scale electrobioremediation experiment for the treatment of marine sediments contaminated by crude oil. A dimensionally stable anode and a stainless-steel mesh cathode were employed to drive seawater electrolysis at a fixed current density of 11 A/m2. This approach allowed establishing conditions conducive to contaminants biodegradation, as confirmed by the enrichment of Alcanivorax borkumensis cells harboring the alkB-gene and other aerobic hydrocarbonoclastic bacteria. Oil chemistry analyses indicated that aromatic hydrocarbons were primarily removed from the sediment via electroosmosis and low molecular weight alkanes (nC6 to nC10) via biodegradation.
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Affiliation(s)
- S Cappello
- Institute for Coastal Marine Environment (IAMC), National Research Council (CNR), Messina, Italy
| | - C Cruz Viggi
- Water Research Institute (IRSA), National Research Council (CNR), Monterotondo, RM, Italy
| | - M Yakimov
- Institute for Coastal Marine Environment (IAMC), National Research Council (CNR), Messina, Italy
| | - S Rossetti
- Water Research Institute (IRSA), National Research Council (CNR), Monterotondo, RM, Italy
| | - B Matturro
- Water Research Institute (IRSA), National Research Council (CNR), Monterotondo, RM, Italy
| | - L Molina
- Environmental Protection Department, Estación Experimental Del Zaidín, Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - A Segura
- Environmental Protection Department, Estación Experimental Del Zaidín, Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - S Marqués
- Environmental Protection Department, Estación Experimental Del Zaidín, Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - L Yuste
- Departamento de Biotecnología Microbiana, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - E Sevilla
- Departamento de Biotecnología Microbiana, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - F Rojo
- Departamento de Biotecnología Microbiana, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - A Sherry
- School of Civil Engineering and Geosciences, Newcastle University, Newcastle Upon Tyne, United Kingdom
| | - O K Mejeha
- School of Civil Engineering and Geosciences, Newcastle University, Newcastle Upon Tyne, United Kingdom
| | - I M Head
- School of Civil Engineering and Geosciences, Newcastle University, Newcastle Upon Tyne, United Kingdom
| | - L Malmquist
- Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen, Denmark
| | - J H Christensen
- Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen, Denmark
| | - N Kalogerakis
- School of Environmental Engineering, Technical University of Crete, Chania, Greece
| | - F Aulenta
- Water Research Institute (IRSA), National Research Council (CNR), Monterotondo, RM, Italy.
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8
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Andrés-Lasheras S, Bolea R, Mainar-Jaime RC, Kuijper E, Sevilla E, Martín-Burriel I, Chirino-Trejo M. Presence of Clostridium difficile in pig faecal samples and wild animal species associated with pig farms. J Appl Microbiol 2016; 122:462-472. [PMID: 27990723 DOI: 10.1111/jam.13343] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 10/28/2016] [Accepted: 10/28/2016] [Indexed: 01/05/2023]
Abstract
AIMS To determine the presence of Clostridium difficile on fattening pig farms in north-eastern Spain. METHODS AND RESULTS Twenty-seven farms were sampled. Pools of pig faecal samples (n = 210), samples of intestinal content from common farm pest species (n = 95) and environment-related samples (n = 93) were collected. Isolates were tested for toxin genes of C. difficile, and typed by PCR-ribotyping and toxinotyping. The minimal inhibitory concentrations of six antimicrobial agents were determined using Etest. Thirty-four isolates were obtained from 12 farms, and 30 (88·2%) had toxin genes. Seven ribotypes were identified. Ribotype 078 and its variant 126 were predominant (52·9%). The same ribotypes were isolated from different animal species on the same farm. None of the isolates were resistant to metronidazole or vancomycin. CONCLUSIONS Clostridium difficile was common within the pig farm environment. Most of the positive samples came from pest species or were pest-related environmental samples. SIGNIFICANCE AND IMPACT OF THE STUDY Pest species were colonized with toxigenic and antimicrobial-resistant C. difficile strains of the same ribotypes that are found in humans and pigs. Rodents and pigeons may transmit toxigenic and antimicrobial-resistant C. difficile strains that are of the same ribotypes as those occuring in humans.
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Affiliation(s)
- S Andrés-Lasheras
- Departamento de Patología Animal, Facultad de Veterinaria, Instituto Agroalimentario de Aragón-IA2-(Universidad de Zaragoza-CITA), Zaragoza, Spain
| | - R Bolea
- Departamento de Patología Animal, Facultad de Veterinaria, Instituto Agroalimentario de Aragón-IA2-(Universidad de Zaragoza-CITA), Zaragoza, Spain
| | - R C Mainar-Jaime
- Departamento de Patología Animal, Facultad de Veterinaria, Instituto Agroalimentario de Aragón-IA2-(Universidad de Zaragoza-CITA), Zaragoza, Spain
| | - E Kuijper
- Department of Medical Microbiology, Centre of Infectious Diseases, Leiden University Medical Centre, Leiden, The Netherlands
| | - E Sevilla
- Departamento de Patología Animal, Facultad de Veterinaria, Instituto Agroalimentario de Aragón-IA2-(Universidad de Zaragoza-CITA), Zaragoza, Spain
| | - I Martín-Burriel
- Laboratorio de Genética Bioquímica (LAGENBIO), Facultad de Veterinaria, Instituto Agroalimentario de Aragón-IA2-(Universidad de Zaragoza-CITA), Zaragoza, Spain
| | - M Chirino-Trejo
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK, Canada
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9
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Abstract
Iron-containing metalloproteins are the main cornerstones for efficient electron transport in biological systems. The abundance and diversity of iron-dependent proteins in cyanobacteria makes those organisms highly dependent of this micronutrient. To cope with iron imbalance, cyanobacteria have developed a survey of adaptation strategies that are strongly related to the regulation of photosynthesis, nitrogen metabolism and other central electron transfer pathways. Furthermore, either in its ferrous form or as a component of the haem group, iron plays a crucial role as regulatory signalling molecule that directly or indirectly modulates the composition and efficiency of cyanobacterial redox reactions. We present here the major mechanism used by cyanobacteria to couple iron homeostasis to the regulation of electron transport, making special emphasis in processes specific in those organisms.
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Affiliation(s)
| | - E Sevilla
- University of Zaragoza, Zaragoza, Spain
| | - M T Bes
- University of Zaragoza, Zaragoza, Spain
| | | | - M F Fillat
- University of Zaragoza, Zaragoza, Spain.
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10
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de Jaime E, Vázquez O, Rodríguez M, Sevilla E, Burcet S, Huarte-Mendicoa A, Garcia-Baztan A, Mojal S, Miralles R. Geriatric day hospital improves quality of life: A before and after study. Eur Geriatr Med 2013. [DOI: 10.1016/j.eurger.2013.06.004] [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: 10/26/2022]
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11
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Dacharry P, Prouteau A, Koleck M, Belio MC, Sevilla E, de Sèze MP, Dehail P, Joseph PA, Mazaux JM. Activité et participation des personnes aphasiques par accident vasculaire cérébral : proposition d’une évaluation dérivée de la CIF. Ann Phys Rehabil Med 2013. [DOI: 10.1016/j.rehab.2013.07.258] [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: 10/26/2022]
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12
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Dacharry P, Prouteau A, Koleck M, Belio MC, Sevilla E, de Sèze MP, Dehail P, Joseph PA, Mazaux JM. Activity and participation in stroke patients with aphasia: Proposition of an ICF-derived assessment tool. Ann Phys Rehabil Med 2013. [DOI: 10.1016/j.rehab.2013.07.265] [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: 11/16/2022]
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13
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Sevilla E, Smienk H, Razquin P, Mata L, Peleato ML. Optimization of intracellular microcystin-LR extraction for its analysis by protein phosphatase inhibition assay. Water Sci Technol 2009; 60:1903-1909. [PMID: 19809154 DOI: 10.2166/wst.2009.527] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Microcystins are toxins produced by some strains of cyanobacteria. Several methods have been developed to allow the quantification of microcystins, which are mainly endotoxins. Among those methods, the protein phosphatase inhibition assay is a good candidate as a screening method because of its sensitivity, simplicity and specificity. In this work a method for intracellular microcystin extraction in field water samples and lab cyanobacterial cultures prior to their analysis by protein phosphatase inhibition assay has been optimized. Microcystin-LR and Microcystis aeruginosa PCC 7806 were used as reference microcystin and strain, respectively, in order to optimize the protocol. The protocol consists on filtering the sample through a nylon filter of 0.8 microm, filter extraction with methanol 80% 0.1% trifluoroacetic acid (TFA) 0.1% tween 20, extract centrifugation and supernatant dilution (1/20). The establishment of an extraction protocol was carried out determining the extraction volume, time of extraction and number of extractions. The advantages of the method developed in this work are basically its simplicity and avoiding the use of specific and expensive equipment.
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Affiliation(s)
- E Sevilla
- Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Ciencias and Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain.
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14
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Casao A, Vega S, Palacín I, Pérez-Pe R, Laviña A, Quintín FJ, Sevilla E, Abecia JA, Cebrián-Pérez JA, Forcada F, Muiño-Blanco T. Effects of melatonin implants during non-breeding season on sperm motility and reproductive parameters in Rasa Aragonesa rams. Reprod Domest Anim 2008; 45:425-32. [PMID: 18954380 DOI: 10.1111/j.1439-0531.2008.01215.x] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The effect of melatonin implants administered during non-breeding season in Rasa Aragonesa rams on sperm motility parameters and other reproductive traits was assessed. In a first experiment, two Rasa Aragonesa rams were implanted (with melatonin group M), remaining other two males as control group (C). Semen of each group was collected from 1 May to 23 June, twice or three times a week, and motility parameters were assessed using a computer-assisted sperm analysis system. Melatonin increased the percentage of progressive motile spermatozoa, particularly during 46-75 days after melatonin implantation (p < 0.01). In experiment 2, M and C in vitro fertilization ability had been determined by zona-pellucida binding assays, using spermatozoa from experiment 1, obtained 60-70 days after melatonin was implanted. A significantly higher number of spermatozoa attached per oocyte was observed in frozen-thawed immature ovine oocytes incubated with sperm from M animals than in those incubated with sperm from the C group (p < 0.01). Finally, a field assay (experiment 3) was performed. In this case, five Rasa Aragonesa rams were implanted with melatonin and three remained as control group. Sperm doses from those animals were used for artificial insemination of 2608 Rasa Aragonesa ewes from 39 different farms at non-breeding season. Fertility, litter size and fecundity were studied. Semen from melatonin implanted rams seemed to increase both fertility and fecundity in ewes inseminated with spermatozoa obtained 46-60 days after implantation (p < 0.1). Thus, melatonin treatment in rams during non-breeding season modifies sperm motility parameters and seems to improve the fertilization parameters obtained.
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Affiliation(s)
- A Casao
- Department of Biochemistry and Molecular and Cell Biology, University of Zaragoza, Zaragoza, Spain.
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15
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Sevilla E. [Damage to retinal vasculature]. Bull Soc Belge Ophtalmol 2007:67-70. [PMID: 17718229] [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: 05/16/2023]
Abstract
The use of interferon increased these last years. Cotton wool-spots, retinal hemorrhages, and microaneurysms are common manifestations of interferon retinopathy. The frequency of this retinopathy is underestimated as it is often asymptomatic. Screening and a multidisciplinary approach are therefore recommended.
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Affiliation(s)
- E Sevilla
- Service d'Ophtalmologie, Hôpital Erasme, Université Libre de Bruxelles, Bruxelles.
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16
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Pérez-Pé R, Martí JI, Sevilla E, Fernández-Sánchez M, Fantova E, Altarriba J, Cebrián-Pérez JA, Muiño-Blanco T. Prediction of fertility by centrifugal countercurrent distribution (CCCD) analysis: correlation between viability and heterogeneity of ram semen and field fertility. Reproduction 2002; 123:869-75. [PMID: 12052241 DOI: 10.1530/rep.0.1230869] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The prediction of the fertilizing ability of a sire or a given insemination dose is a primary aim in the field of artificial insemination. Centrifugal countercurrent distribution analysis (CCCD) was used to determine the relationship between some sperm parameters and the in vivo fertility rate obtained with the same sample after cervical artificial insemination. A total of 522 ewes from 26 different farms was inseminated with 53 ejaculates obtained from 25 mature Rasa aragonesa rams. Semen was diluted to 1.6 x 10(9) cells ml-1 and doses of 0.25 ml were prepared and kept at 15 degrees C until used for insemination. The same ejaculates were used for analysis of standard semen parameters and CCCD analysis. Sperm motility, concentration and viability were determined before and after CCCD. Post-CCCD parameters were derived from the analysis of the profile obtained after CCCD. The recovered viability showed the highest correlation with fertility, especially in the central chambers (V2), r = 0.415, P < 0.005). The ejaculate heterogeneity also showed a positive correlation with field fertility (r = 0.23), with a tendency towards significance (P < 0.1). The mean fertility value of all ejaculates used in this study was 46.75%, ranging from 12.5% to 75.0%. Ejaculates were classified into two categories according to their fertility: higher and lower than the mean value. Only the viability recovered in the central chambers (V2) was a parameter with a predictive capacity to discriminate between the two groups (P < 0.05). A predictive equation for field fertility with a correlation coefficient r = 0.488 and a very high level of significance (P < 0.005) was deduced by multiple analysis: PF = 6.02 + 0.069V2 + 0.315H (where PF is predictive fertility, V2 is the recovered viability in the CCCD profile central chambers and H is heterogeneity).
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Affiliation(s)
- R Pérez-Pé
- Department of Biochemistry and Molecular and Cell Biology, School of Veterinary Medicine, University of Zaragoza, Miguel Servet 177, 50013-Zaragoza, Spain
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17
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Menéndez JA, del Mar Barbacid M, Montero S, Sevilla E, Escrich E, Solanas M, Cortés-Funes H, Colomer R. Effects of gamma-linolenic acid and oleic acid on paclitaxel cytotoxicity in human breast cancer cells. Eur J Cancer 2001; 37:402-13. [PMID: 11239764 DOI: 10.1016/s0959-8049(00)00408-1] [Citation(s) in RCA: 99] [Impact Index Per Article: 4.3] [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: 10/18/2022]
Abstract
It has been suggested that dietary interventions may improve the effectiveness of cancer chemotherapy. We have examined the combined in vitro cytotoxicity of paclitaxel and the fatty acids gamma-linolenic acid (GLA, 18:3n-6) and oleic acid (OA, 18:1n-9) in human breast carcinoma MDA-MB-231 cells. The effect of fatty acids on paclitaxel chemosensitivity was determined by comparing IC(50) and IC(70) (50 and 70% inhibitory concentrations, respectively) obtained when the cells were exposed to IC(50) and IC(70) levels of paclitaxel alone and fatty acids were supplemented either before or during the exposure to paclitaxel. The 3-4,5-dimethylthiazol-2-yl-2,5-diphenyl-tetrazolium bromide (MTT) assay was used to determine cell growth inhibition. GLA by itself showed antiproliferative effects, and a possible GLA-paclitaxel interaction at the cellular level was assessed by the isobologram and the combination-index (CI) methods. Isobole analysis at the isoeffect levels of 50 and 70% revealed that drug interaction was predominantly synergistic when GLA and paclitaxel were added concurrently for 24 h to the cell cultures. Interaction assessment using the median-effect principle and the combination-index (CI) method showed that exposure of MDA-MB-231 cells to an equimolar combination of concurrent GLA plus paclitaxel for 24 h resulted in a moderate synergism at all effect levels, consistent with the results of the isobologram analysis. When exposure to GLA (24 h) was followed sequentially by paclitaxel (24 h) only an additive effect was observed. The GLA-mediated increase in paclitaxel chemosensitivity was only partially abolished by Vitamin E, a lipid peroxidation inhibitor, suggesting a limited influence of the oxidative status of GLA in achieving potentiation of paclitaxel toxicity. When OA (a non-peroxidisable fatty acid) was combined with paclitaxel, an enhancement of chemosensitivity was found when OA was used concurrently with paclitaxel, although less markedly than with GLA. Pretreatment of MDA-MB-231 cells with OA for 24 h prior to a 24 h paclitaxel exposure produced greater enhancement of paclitaxel sensitivity at high OA concentrations than the concurrent exposure to OA and paclitaxel. The OA-induced sensitisation to paclitaxel was not due to the cytoxicity of the fatty acid itself. When these observations were extended to three additional breast carcinoma cell lines (SK-Br3, T47D and MCF-7), simultaneous exposure to GLA and paclitaxel also resulted in synergism. GLA preincubation followed by paclitaxel resulted in additivity for all cell lines. Simultaneous exposure to paclitaxel and OA enhanced paclitaxel cytotoxicity in T47D and MCF-7 cells, but not in SK-Br3 cells, whereas preincubation with OA failed to increase paclitaxel effectiveness in all three cell lines. For comparison, the effects of other fatty acids on paclitaxel chemosensitivity were examined: GLA was the most potent at enhancing paclitaxel cytotoxicity, followed by alpha-linolenic acid (ALA; 18:3n.3), eicosapentaenoic acid (EPA; 20:5n-3) and docosahexaenoic acid (DHA; 22:6n-3), whereas linoleic acid (LA; 18:2n-6) did not increase paclitaxel toxicity. These findings provide experimental support for the use of fatty acids as modulators of tumour cell chemosensitivity in paclitaxel-based therapy.
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Affiliation(s)
- J A Menéndez
- Division of Medical Oncology, Hospital Universitario 12 de Octubre, Avda. de Córdoba Km 5.4, E-28041 Madrid, Spain
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18
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Gené Badia J, Planes Magriñà A, Berraondo Zabalegui I, Gorroñogoitia A, Palacios JJ, Sevilla E, Sáez M. [Copayment and accessibility to health services. Work Group semFYC: Copayment]. Aten Primaria 2000; 26:267-73. [PMID: 11100589 PMCID: PMC7681370] [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: 02/18/2023] Open
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19
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Feliciano KV, Kovacs MH, Sevilla E, Alzate A. [Perceptions regarding leprosy and resulting handicaps prior to diagnosis in Recife, Brazil]. Rev Panam Salud Publica 1998; 3:293-302. [PMID: 9643072 DOI: 10.1590/s1020-49891998000500002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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: 02/07/2023] Open
Abstract
This article reports on a case-control study conducted in Recife, Brazil, between November 1993 and July 1994, to determine how leprosy patients' perceptions and notions influence disease management and use of health services. The sample was composed of 183 residents of Recife between the ages of 20 and 70 years who sought diagnostic services in the dermatology clinics of two referral centers situated in the third, fourth, and sixth political and administrative regions. Sixty-four patients having handicaps or their precursor lesions were classified as cases; the remaining 119 were used as controls. All were diagnosed during the study period. For the analysis, adjustments were made for sex, age, schooling, and a previous history of Hansen's disease among patients. The study revealed the simultaneous presence of two types of "invisibility" of the disease in an area where endemicity is increasing: 1) for patients in both groups, the low frequency of spontaneous explanatory models related to the illness, even in the presence of disease, and 2) for health professionals, the limitations of detection methods. Since such deficiencies affect decisions bearing on individual and collective disease management, they are a risk factor in and of themselves and stand in the way of eliminating leprosy as a public health problem.
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Affiliation(s)
- K V Feliciano
- Universidad de Pernambuco, Facultad de Ciencias Médicas, Pernambuco, Brasil
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20
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Hitt R, Hornedo J, Colomer R, Mendiola C, Brandariz A, Sevilla E, Alvarez-Vicent J, Cortés-Funes H. A phase I/II study of paclitaxel plus cisplatin as first-line therapy for head and neck cancers: preliminary results. Semin Oncol 1995; 22:50-4. [PMID: 8643971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Improved outcomes among patients with head and neck carcinomas require investigations of new drugs for induction therapy. Preliminary results of an Eastern Cooperative Oncology Group study of single-agent paclitaxel (Taxol; Bristol-Myers Squibb Company, Princeton, NJ) reported a 37% response rate in patients with head and neck cancer, and the paclitaxel/cisplatin combination has been used successfully and has significantly improved median response duration in ovarian cancer patients. We initiated a phase I/II trial to determine the response and toxicity of escalating paclitaxel doses combined with fixed-dose cisplatin with granulocyte colony-stimulating factor support in patients with untreated locally advanced inoperable head and neck carcinoma. To date, 23 men with a median age of 50 years and good performance status have entered the trial. Primary tumor sites were oropharynx, 10 patients; hypopharynx, four; larynx, two; oral cavity, three; unknown primary, two; and nasal cavity and parotid gland, one each. Of 20 patients evaluable for toxicity, four had stage III and 16 had stage IV disease. Treatment, given every 21 days for a maximum of three cycles, consisted of paclitaxel by 3-hour infusion followed the next day by a fixed dose of cisplatin (75 mg/m2). The dose levels incorporate escalating paclitaxel doses, and intrapatient escalations within a given dose level are permitted if toxicity permits. At the time of this writing, dose level 4 (260, 270, and 280 mg/m2) is being evaluated; three patients from this level are evaluable. With paclitaxel doses of 200 mg/m2 and higher, granulocyte colony-stimulating factor 5 micrograms/kg/d is given (days 4 through 12). Of 18 patients evaluable for response, seven (39%) achieved a complete response and six (33%) achieved a partial response. Three patients had no change and disease progressed in two. The overall response rate is 72%. Eleven responding patients had subsequent surgery/radiotherapy or radical radiotherapy. Two pathologic complete responses were observed in patients who had achieved clinical complete responses. Alopecia, paresthesias, and arthralgias/myalgias have occurred frequently, but with one exception (a grade 3 myalgia) they have been grade 1 or 2. No dose-limiting hematologic toxicity has been seen. Paclitaxel/cisplatin is an effective first-line regimen for locoregionally advanced head and neck cancer and continued study is warranted. Results thus far suggest no dose-response effect for paclitaxel doses above 200 mg/m2.
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Affiliation(s)
- R Hitt
- Division of Medical Oncology, Hospital Universitario Doce de Octubre, Madrid, Spain
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21
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Gomis P, Sevilla E, Oliver MJ, Moreno JM, León M, Montejo JC, Santos-Ruiz MA, Armentia L, Herreros de Tejada A. ["All in one" parenteral nutrition: is it that safe?]. NUTR HOSP 1994; 9:316-23. [PMID: 7986855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
The use of "all in one" admixtures is supported by an extensive number of studies and by many years of experience. However, we detected stability problems in some mixtures whose stability was previously reported. We made modifications in one of these mixtures [composed of 1.000 ml Freamine 8.5%, 100 ml 10% dextrose, 500 ml water, 500 ml Intralipid 20%, 75 ml electrolyte solution (Na 75 mEq, K 60 mEq, Ca 15 mEg, Mg 15 mEq, Cl 90 mEq, acetate 75 mEq)] in order to see how the different components affect the emulsion stability. All the admixtures were visually inspected after storage during 24 hour at room temperature. It was observed that admixtures with low glucose concentration, high electrolyte levels and high volume were less stable than admixtures containing high glucose, low electrolyte and low volume. Amino acid concentration did not increased the stability as expected. MCT/LCT emulsions were more stable than LCT emulsions. More studies are needed to explain the stability problems of these TPN solutions.
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Affiliation(s)
- P Gomis
- Servicio de Farmacia, Hospital 12 de Octubre, Madrid, España
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22
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Cooper DM, Bazaral MG, Furlan AJ, Sevilla E, Ghattas MA, Sheeler LR, Little JR, Hahn JF, Sheldon WC, Loop FD. Pituitary apoplexy: a complication of cardiac surgery. Ann Thorac Surg 1986; 41:547-50. [PMID: 3486645 DOI: 10.1016/s0003-4975(10)63039-1] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Pituitary apoplexy occurred in 3 patients in the immediate postoperative period following cardiac operation with cardiopulmonary bypass. In this setting, this complication is extremely rare and not widely recognized. Precipitating factors may be related to the extracorporeal bypass apparatus, anticoagulation, low cerebral blood flow, and even anesthetic agents. Neurosurgical decompression can be safely performed in the early postoperative period following open-heart operations.
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Villar A, Sevilla E, Anselmi E. Effects of chlorpromazine and the antidepressant drugs amitriptyline, clomipramine and mianserin on the Ca-depleted rat uterus. Arch Int Pharmacodyn Ther 1985; 277:264-71. [PMID: 3933445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We have investigated the effect of three antidepressants and one phenothiazine on the EDTA-treated rat uterus. It was found that these drugs induce a sustained contraction of tissue in a Ca-free medium (called Ca-free contraction) at concentrations between 5 X 10(-5) and 1 X 10(-4) M. These responses allowed the construction of dose-response curves. However, higher concentrations caused a relaxation of strips contracted by lower doses previously applied. Oxytocin 1 X 10(-2) IU/ml accelerates the appearance of this relaxation. The antidepressants and chlorpromazine at high doses inhibit the oxytocin-induced Ca-free contraction. The drugs-induced Ca-free contraction could be repeated in the same preparation with only a slight reduction in magnitude.
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De León O, Sevilla E, Salas G. [Transcultural aspects of somatic complaints, Personality and social factors]. Rev Neuropsiquiatr 1976; 39:10-23. [PMID: 968310] [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: 12/25/2022]
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