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Moraleda C, Domínguez-Rodríguez S, Mesa JM, García-Sánchez P, de la Serna M, Alonso-Cadenas JA, Bermejo A, Sabrido G, Martínez-Campos L, González-Posada AF, Illán-Ramos M, Cobos-Carrascosa E, Ballesteros Á, Galán JC, Llorente F, Aguilera-Alonso D, Jiménez AB, Catalán P, Dahdouh E, Navarro I, Fernández-Garoz B, Mendoza P, Pérez-Jorge C, Cabezas-Fernández T, Blázquez-Gamero D, Rivas G, Gonzalez-Donapetry P, Sáez E, Fernández-Pinero J, Lucas-Fernández J, Pérez-Ramírez E, Merino P, Miragaya S, Lorente J, Iglesias I, Tagarro A. Oral saliva swab reverse transcription PCR for Covid-19 in the paediatric population. Arch Dis Child 2022; 107:1051-1058. [PMID: 35688603 PMCID: PMC9240444 DOI: 10.1136/archdischild-2021-323712] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 05/12/2022] [Indexed: 11/21/2022]
Abstract
OBJECTIVES To evaluate the performance of oral saliva swab (OSS) reverse transcription PCR (RT-PCR) compared with RT-PCR and antigen rapid diagnostic test (Ag-RDT) on nasopharyngeal swabs (NPS) for SARS-CoV-2 in children. DESIGN Cross-sectional multicentre diagnostic study. SETTING Study nested in a prospective, observational cohort (EPICO-AEP) performed between February and March 2021 including 10 hospitals in Spain. PATIENTS Children from 0 to 18 years with symptoms compatible with Covid-19 of ≤5 days of duration were included. Two NPS samples (Ag-RDT and RT-PCR) and one OSS sample for RT-PCR were collected. MAIN OUTCOME Performance of Ag-RDT and RT-PCR on NPS and RT-PCR on OSS sample for SARS-CoV-2. RESULTS 1174 children were included, aged 3.8 years (IQR 1.7-9.0); 73/1174 (6.2%) patients tested positive by at least one of the techniques. Sensitivity and specificity of OSS RT-PCR were 72.1% (95% CI 59.7 to 81.9) and 99.6% (95% CI 99 to 99.9), respectively, versus 61.8% (95% CI 49.1 to 73) and 99.9% (95% CI 99.4 to 100) for the Ag-RDT. Kappa index was 0.79 (95% CI 0.72 to 0.88) for OSS RT-PCR and 0.74 (95% CI 0.65 to 0.84) for Ag-RDT versus NPS RT-PCR. CONCLUSIONS RT-PCR on the OSS sample is an accurate option for SARS-CoV-2 testing in children. A less intrusive technique for younger patients, who usually are tested frequently, might increase the number of patients tested.
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Affiliation(s)
- Cinta Moraleda
- Pediatric Infectious Diseases Unit. Department of Pediatrics, Hospital Universitario 12 de Octubre. Pediatric Research and Clinical Trials Unit (UPIC). RITIP (Translational Research Network in Pediatric Infectious Diseases), Madrid, Spain
- Instituto de Investigación 12 de Octubre (imas12), Fundación para la Investigación Biomédica del Hospital 12 de Octubre, Madrid, Spain
| | - Sara Domínguez-Rodríguez
- Instituto de Investigación 12 de Octubre (imas12), Fundación para la Investigación Biomédica del Hospital 12 de Octubre, Madrid, Spain
| | - Juan Miguel Mesa
- Paediatrics Department. Pediatrics Research Group, Hospital Universitario Infanta Sofia, San Sebastian de los Reyes, Madrid, Spain
| | - Paula García-Sánchez
- Emergency Pediatric Department. Instituto Investigación Hospital La Paz (IDIPaz), Hospital Universitario La Paz, Madrid, Spain
| | - María de la Serna
- Paediatrics Department. Pediatrics Research Group, Hospital Universitario Infanta Sofia, San Sebastian de los Reyes, Madrid, Spain
| | - José Antonio Alonso-Cadenas
- Emergency Pediatric Department. Instituto Investigación La Princesa, Hospital Infantil Universitario Niño Jesús, Madrid, Spain
| | - Amanda Bermejo
- Pediatric Department, Hospital Universitario de Móstoles, Móstoles, Madrid, Spain
| | - Gema Sabrido
- Pediatric Department, Hospital Universitario Rey Juan Carlos, Móstoles, Madrid, Spain
| | - Leticia Martínez-Campos
- Pediatric Infectious Diseases, Materno Infantil. Hospital Universitario Torrecárdenas, Almeria, Spain
| | | | - Marta Illán-Ramos
- Pediatrics Department, Hospital Universitario Clínico San Carlos, Madrid, Spain
| | - Elena Cobos-Carrascosa
- Instituto de Investigación 12 de Octubre (imas12), Fundación para la Investigación Biomédica del Hospital 12 de Octubre, Madrid, Spain
| | - Álvaro Ballesteros
- Instituto de Investigación 12 de Octubre (imas12), Fundación para la Investigación Biomédica del Hospital 12 de Octubre, Madrid, Spain
| | - Juan Carlos Galán
- Microbiology Department, Hospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS). Centro de Investigación Biomédica en Red en Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
| | - Francisco Llorente
- Centro de Investigacion en Sanidad Animal INIA-CSIC, Valdeolmos, Madrid, Spain
| | - David Aguilera-Alonso
- Pediatric Infectious Diseases Unit. Department of Pediatrics, Hospital Universitario Gregorio Marañón. Unidad de Investigación Maternoinfantil Fundación Familia Alonso (UDIMIFFA), Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM). CIBER en Enfermedades Infecciosas (CIBERINFEC), Madrid, Spain
| | - Ana Belén Jiménez
- Pediatrics Department, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain
| | - Pilar Catalán
- Servicio de Microbiologia Clinica y Enfermedades Infecciosas, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Elias Dahdouh
- Clinical Microbiology and Parasitology Department, Hospital Universitario La Paz. IdiPAZ, Madrid, Spain
| | - Ignacio Navarro
- Paediatrics Department. Pediatrics Research Group, Hospital Universitario Infanta Sofia, San Sebastian de los Reyes, Madrid, Spain
| | | | - Pablo Mendoza
- Microbiology Department, Hospital Universitario de Móstoles, Mostoles, Madrid, Spain
| | - Concepción Pérez-Jorge
- Microbiology Department, Hospital Universitario Rey Juan Carlos, Mostoles, Madrid, Spain
| | | | - Daniel Blázquez-Gamero
- Pediatric Infectious Diseases Unit. Department of Pediatrics, Hospital Universitario 12 de Octubre. Pediatric Research and Clinical Trials Unit (UPIC). RITIP (Translational Research Network in Pediatric Infectious Diseases), Madrid, Spain
- Instituto de Investigación 12 de Octubre (imas12), Fundación para la Investigación Biomédica del Hospital 12 de Octubre, Madrid, Spain
- Universidad Complutense, Madrid, Spain
| | - Gonzalo Rivas
- Microbiology Department, Hospital Universitario 12 de Octubre, Madrid, Spain
| | | | - Elena Sáez
- Microbiology Department, UR Salud. Hospital Universitario Infanta Sofía. Paediatrics Research Group, San Sebastian de los Reyes, Madrid, Spain
| | | | - Jesús Lucas-Fernández
- Microbiology Department, Hospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS). Centro de Investigación Biomédica en Red en Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
| | - Elisa Pérez-Ramírez
- Centro de Investigacion en Sanidad Animal INIA-CSIC, Valdeolmos, Madrid, Spain
| | - Paloma Merino
- Microbiology Department, Hospital Universitario Clínico San Carlos, Madrid, Spain
| | - Sandra Miragaya
- Clinic Analysis Department, Hospital Infantil Universitario Niño Jesús, Madrid, Spain
| | - Jorge Lorente
- Emergency Pediatric Department, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Irene Iglesias
- Centro de Investigacion en Sanidad Animal INIA-CSIC, Valdeolmos, Madrid, Spain
| | - Alfredo Tagarro
- Instituto de Investigación 12 de Octubre (imas12), Fundación para la Investigación Biomédica del Hospital 12 de Octubre, Madrid, Spain
- Paediatrics Department. Pediatrics Research Group, Hospital Universitario Infanta Sofia, San Sebastian de los Reyes, Madrid, Spain
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Martínez-González B, Vázquez-Sirvent L, Soria ME, Mínguez P, Salar-Vidal L, García-Crespo C, Gallego I, de Ávila AI, Llorens C, Soriano B, Ramos-Ruiz R, Esteban J, Fernandez-Roblas R, Gadea I, Ayuso C, Ruíz-Hornillos J, Pérez-Jorge C, Domingo E, Perales C. Vaccine breakthrough infections with SARS-CoV-2 Alpha mirror mutations in Delta Plus, Iota, and Omicron. J Clin Invest 2022; 132:e157700. [PMID: 35259127 PMCID: PMC9057617 DOI: 10.1172/jci157700] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 03/01/2022] [Indexed: 11/24/2022] Open
Abstract
Replication of SARS-CoV-2 in the human population is defined by distributions of mutants that are present at different frequencies within the infected host and can be detected by ultra-deep sequencing techniques. In this study, we examined the SARS-CoV-2 mutant spectra of amplicons from the spike-coding (S-coding) region of 5 nasopharyngeal isolates derived from patients with vaccine breakthrough. Interestingly, all patients became infected with the Alpha variant, but amino acid substitutions that correspond to the Delta Plus, Iota, and Omicron variants were present in the mutant spectra of the resident virus. Deep sequencing analysis of SARS-CoV-2 from patients with vaccine breakthrough revealed a rich reservoir of mutant types and may also identify tolerated substitutions that can be represented in epidemiologically dominant variants.
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Affiliation(s)
- Brenda Martínez-González
- Department of Clinical Microbiology, Instituto de Investigación Sanitaria-Fundación Jiménez Díaz University Hospital, Universidad Autónoma de Madrid (IIS-FJD, UAM), Madrid, Spain
| | - Lucía Vázquez-Sirvent
- Department of Clinical Microbiology, Instituto de Investigación Sanitaria-Fundación Jiménez Díaz University Hospital, Universidad Autónoma de Madrid (IIS-FJD, UAM), Madrid, Spain
| | - María E. Soria
- Department of Clinical Microbiology, Instituto de Investigación Sanitaria-Fundación Jiménez Díaz University Hospital, Universidad Autónoma de Madrid (IIS-FJD, UAM), Madrid, Spain
- Centro de Biología Molecular “Severo Ochoa” (CBMSO), Consejo Superior de Investigaciones Científicas (CSIC-UAM), Campus de Cantoblanco, Madrid, Spain
| | - Pablo Mínguez
- Department of Genetics and Genomics, IIS-FJD, UAM, Madrid, Spain
- Centre for Biomedical Network Research on Rare Diseases (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
- Bioinformatics Unit, IIS-FJD, UAM, Madrid, Spain
| | - Llanos Salar-Vidal
- Department of Clinical Microbiology, Instituto de Investigación Sanitaria-Fundación Jiménez Díaz University Hospital, Universidad Autónoma de Madrid (IIS-FJD, UAM), Madrid, Spain
| | - Carlos García-Crespo
- Centro de Biología Molecular “Severo Ochoa” (CBMSO), Consejo Superior de Investigaciones Científicas (CSIC-UAM), Campus de Cantoblanco, Madrid, Spain
| | - Isabel Gallego
- Centro de Biología Molecular “Severo Ochoa” (CBMSO), Consejo Superior de Investigaciones Científicas (CSIC-UAM), Campus de Cantoblanco, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - Ana I. de Ávila
- Centro de Biología Molecular “Severo Ochoa” (CBMSO), Consejo Superior de Investigaciones Científicas (CSIC-UAM), Campus de Cantoblanco, Madrid, Spain
| | - Carlos Llorens
- Biotechvana, “Scientific Park,” Universidad de Valencia, Valencia, Spain
| | - Beatriz Soriano
- Biotechvana, “Scientific Park,” Universidad de Valencia, Valencia, Spain
| | - Ricardo Ramos-Ruiz
- Unidad de Genómica, “Scientific Park of Madrid,” Campus de Cantoblanco, Madrid, Spain
| | - Jaime Esteban
- Department of Clinical Microbiology, Instituto de Investigación Sanitaria-Fundación Jiménez Díaz University Hospital, Universidad Autónoma de Madrid (IIS-FJD, UAM), Madrid, Spain
| | - Ricardo Fernandez-Roblas
- Department of Clinical Microbiology, Instituto de Investigación Sanitaria-Fundación Jiménez Díaz University Hospital, Universidad Autónoma de Madrid (IIS-FJD, UAM), Madrid, Spain
| | - Ignacio Gadea
- Department of Clinical Microbiology, Instituto de Investigación Sanitaria-Fundación Jiménez Díaz University Hospital, Universidad Autónoma de Madrid (IIS-FJD, UAM), Madrid, Spain
| | - Carmen Ayuso
- Department of Genetics and Genomics, IIS-FJD, UAM, Madrid, Spain
- Centre for Biomedical Network Research on Rare Diseases (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
| | - Javier Ruíz-Hornillos
- Allergy Unit, Hospital Infanta Elena, Valdemoro, Madrid, Spain
- IIS-FJD, UAM, Madrid, Spain
- Faculty of Medicine, Universidad Francisco de Vitoria, Madrid, Spain
| | - Concepción Pérez-Jorge
- Department of Clinical Microbiology, Instituto de Investigación Sanitaria-Fundación Jiménez Díaz University Hospital, Universidad Autónoma de Madrid (IIS-FJD, UAM), Madrid, Spain
| | - Esteban Domingo
- Centro de Biología Molecular “Severo Ochoa” (CBMSO), Consejo Superior de Investigaciones Científicas (CSIC-UAM), Campus de Cantoblanco, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - Celia Perales
- Department of Clinical Microbiology, Instituto de Investigación Sanitaria-Fundación Jiménez Díaz University Hospital, Universidad Autónoma de Madrid (IIS-FJD, UAM), Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
- Department of Molecular and Cell Biology, Centro Nacional de Biotecnología (CNB), CSIC, Campus de Cantoblanco, Madrid, Spain
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Martínez-Pérez M, Conde A, Arenas MA, Mahíllo-Fernandez I, de-Damborenea JJ, Pérez-Tanoira R, Pérez-Jorge C, Esteban J. The "Race for the Surface" experimentally studied: In vitro assessment of Staphylococcus spp. adhesion and preosteoblastic cells integration to doped Ti-6Al-4V alloys. Colloids Surf B Biointerfaces 2018; 173:876-883. [PMID: 30551304 DOI: 10.1016/j.colsurfb.2018.10.076] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 10/24/2018] [Accepted: 10/25/2018] [Indexed: 11/18/2022]
Abstract
OBJECTIVE Implant-related infection is a devastating complication in orthopedic surgery. Aiming to minimize this problem, many material modifications have been developed. Here we report a study of a surface modification of Ti-6 Al-4 V alloy using a methodology that enables the study of interactions between bacteria and the material in the presence of eukaryotic cells. METHODS We mixed different concentrations of collection or clinical strains of staphylococci isolated from implant-related infections with preosteoblastic cells using a previously published methodology, analyzing the minimal concentration of bacteria able to colonize the surface of the material through image analysis. Ti-6 Al-4 V alloy was modified by anodization to obtain two F-doped nanostructured surfaces that have been previously described to have antibacterial properties. RESULTS Our results show similar bacterial adhesion results to nanoporous and nanotubular F-doped surfaces. The presence of preosteoblastic cells increases the adherence of all bacterial strains to both structures. No effect of the surface on eukaryotic cells adherence was detected. CONCLUSION To our knowledge, this is the first time that anin vitro study emulating the race for the surface evaluates and compares the osseointegration and antibacterial properties between two nanostructured- modified titanium alloy surfaces. Clinical strains show different behavior from collection ones in bacterial adherence. The presence of cells increased bacterial adherence. NP and NT surface modifications didn´t show significant differences in bacterial adhesion and preosteoblastic cells integration.
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Affiliation(s)
- Marta Martínez-Pérez
- Department of Clinical Microbiology, IIS-Fundación Jiménez Díaz, UAM. Av. Reyes Católicos 2, 28040 Madrid, Spain.
| | - Ana Conde
- Department of Surface Engineering Corrosion and Durability, National Center for Metallurgical Research, CENIM-CSIC, Avda. Gregorio del Amo, 8, 28040 Madrid, Spain.
| | - María-Angeles Arenas
- Department of Surface Engineering Corrosion and Durability, National Center for Metallurgical Research, CENIM-CSIC, Avda. Gregorio del Amo, 8, 28040 Madrid, Spain.
| | - Ignacio Mahíllo-Fernandez
- Department of Statistics, IIS-Fundación Jiménez Díaz, UAM. Av. Reyes Católicos 2, 28040 Madrid, Spain.
| | - Juan-José de-Damborenea
- Department of Surface Engineering Corrosion and Durability, National Center for Metallurgical Research, CENIM-CSIC, Avda. Gregorio del Amo, 8, 28040 Madrid, Spain.
| | - Ramón Pérez-Tanoira
- Department of Clinical Microbiology, IIS-Fundación Jiménez Díaz, UAM. Av. Reyes Católicos 2, 28040 Madrid, Spain.
| | - Concepción Pérez-Jorge
- Department of Clinical Microbiology, IIS-Fundación Jiménez Díaz, UAM. Av. Reyes Católicos 2, 28040 Madrid, Spain.
| | - Jaime Esteban
- Department of Clinical Microbiology, IIS-Fundación Jiménez Díaz, UAM. Av. Reyes Católicos 2, 28040 Madrid, Spain.
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Aguilar-Colomer A, Doadrio JC, Pérez-Jorge C, Manzano M, Vallet-Regí M, Esteban J. Antibacterial effect of antibiotic-loaded SBA-15 on biofilm formation by Staphylococcus aureus and Staphylococcus epidermidis. J Antibiot (Tokyo) 2016; 70:259-263. [PMID: 27999440 DOI: 10.1038/ja.2016.154] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 11/14/2016] [Accepted: 11/20/2016] [Indexed: 12/13/2022]
Abstract
Staphylococcus aureus and Staphylococcus epidermidis are human pathogens involved in implant-related infections. During those diseases, they are able to form biofilms showing resistance to the effect of many different antibiotics. Drug delivery systems allow a local and effective delivery of antibiotics at high concentrations in the infected tissue without causing the cytotoxic effects commonly linked to systemic administration. We report the use of a porous ceramic biomaterial, such as SBA-15 loaded with antibiotics, to deliver them directly to the infected tissue. SBA-15 discs were loaded with Vancomycin, Rifampin and a combination of both, introduced in a suspension of S. aureus 15981 and S. epidermidis ATCC 35984 and incubated during 6 and 24 h. A statistically significant decrease in the biofilm density and the number of viable bacteria was detected for all antibiotics at 6 h in both bacteria. Rifampin showed an increase in the biofilm density and the number of viable bacteria at 24 h. No differences were detected between Vancomycin and the combination of antibiotics. S. epidermidis was more sensitive to the effect of the antibiotics than S. aureus. Here we have demonstrated that SBA-15 is able to act as an effective drug delivery system not only from a pharmaceutical point of view, but also from a biological one.
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Affiliation(s)
| | - Juan Carlos Doadrio
- Department of Inorganic and Bioinorganic Chemical of Universidad Complutense de Madrid, Madrid, Spain
| | | | - Miguel Manzano
- Department of Inorganic and Bioinorganic Chemical of Universidad Complutense de Madrid, Madrid, Spain
| | - Maria Vallet-Regí
- Department of Inorganic and Bioinorganic Chemical of Universidad Complutense de Madrid, Madrid, Spain.,Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Jaime Esteban
- Department of Clinical Microbiology, IIS-Fundación Jiménez Díaz, Madrid, Spain
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Prieto-Borja L, Rodriguez-Sevilla G, Auñon A, Pérez-Jorge C, Sandoval E, Garcia-Cañete J, Gadea I, Fernandez-Roblas R, Blanco A, Esteban J. Evaluation of a commercial multiplex PCR (Unyvero i60 ®) designed for the diagnosis of bone and joint infections using prosthetic-joint sonication. Enferm Infecc Microbiol Clin 2016; 35:236-242. [PMID: 27769681 DOI: 10.1016/j.eimc.2016.09.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [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: 03/20/2016] [Revised: 09/04/2016] [Accepted: 09/13/2016] [Indexed: 12/31/2022]
Abstract
BACKGROUND The development of sonication protocols over the last few years has improved the sensitivity of conventional cultures for the diagnosis of prosthetic-joint infection (PJI). However, the development of a new, specifically designed kit for the molecular diagnosis of PJI could provide a major improvement in this field. METHODS Prostheses retrieved from patients who underwent implant removal from May 2014 to May 2015 were sent for culture, and processed according to a previously defined protocol that included sonication. Furthermore, 180 microlitres of sonication fluid were used to carry out the multiplex PCR test (Unyvero i60 system®). A comparison of the sensitivity, specificity, positive (PPV) and negative (NPV) predictive value, was performed. The study was approved by the Clinical Research Ethics Committee. RESULTS The analysis included 88 prostheses from 68 patients (1.29 prostheses/patient). The type of prostheses studied were knee (n=55), total hip (n=26), partial hip (n=5), and shoulder (n=2). Twenty-nine patients were diagnosed with a PJI (15 delayed, 12 acute, and 2 haematogenous infections). In 24 cases, the result of the PCR was positive, all but 1 corresponding to patients with clinical criteria of PJI. Nine resistance mechanisms were detected from 5 samples. The Unyvero i60 system® showed slightly better results than traditional culture in terms of specificity and PPV. CONCLUSIONS The Unyvero i60 system® may play a role in rapid diagnosis of PJI, due to its high specificity and PPV. However, despite these results, cultures have to be performed to detect organisms not detected by the system.
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Affiliation(s)
- Laura Prieto-Borja
- Department of Clinical Microbiology, IIS-Fundación Jiménez Díaz, UAM, Av. Reyes Católicos 2, 28040 Madrid, Spain
| | - Graciela Rodriguez-Sevilla
- Department of Clinical Microbiology, IIS-Fundación Jiménez Díaz, UAM, Av. Reyes Católicos 2, 28040 Madrid, Spain
| | - Alvaro Auñon
- Department of Orthopaedic Surgery, IIS-Fundación Jiménez Díaz, UAM, Av. Reyes Católicos 2, 28040 Madrid, Spain
| | - Concepción Pérez-Jorge
- Department of Clinical Microbiology, IIS-Fundación Jiménez Díaz, UAM, Av. Reyes Católicos 2, 28040 Madrid, Spain
| | - Enrique Sandoval
- Department of Orthopaedic Surgery, IIS-Fundación Jiménez Díaz, UAM, Av. Reyes Católicos 2, 28040 Madrid, Spain
| | - Joaquín Garcia-Cañete
- Department of Internal Medicine-Emergency, IIS-Fundación Jiménez Díaz, UAM, Av. Reyes Católicos 2, 28040 Madrid, Spain
| | - Ignacio Gadea
- Department of Clinical Microbiology, IIS-Fundación Jiménez Díaz, UAM, Av. Reyes Católicos 2, 28040 Madrid, Spain
| | - Ricardo Fernandez-Roblas
- Department of Clinical Microbiology, IIS-Fundación Jiménez Díaz, UAM, Av. Reyes Católicos 2, 28040 Madrid, Spain
| | - Antonio Blanco
- Department of Internal Medicine-Emergency, IIS-Fundación Jiménez Díaz, UAM, Av. Reyes Católicos 2, 28040 Madrid, Spain
| | - Jaime Esteban
- Department of Clinical Microbiology, IIS-Fundación Jiménez Díaz, UAM, Av. Reyes Católicos 2, 28040 Madrid, Spain.
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Pérez-Tanoira R, Horwat D, Kinnari TJ, Pérez-Jorge C, Gómez-Barrena E, Migot S, Esteban J. Bacterial adhesion on biomedical surfaces covered by yttria stabilized zirconia. J Mater Sci Mater Med 2016; 27:6. [PMID: 26610929 DOI: 10.1007/s10856-015-5625-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Accepted: 11/09/2015] [Indexed: 06/05/2023]
Abstract
The aim of this study was to compare the bacterial adhesion of Staphylococcus spp. on Ti-6Al-4V with respect to Ti-6Al-V modified alloys with a set of Cubic yttria stabilized zirconia (YSZ) and Ag-YSZ nanocomposite films. Silver is well known to have a natural biocidal character and its presence in the surface predicted to enhance the antimicrobial properties of biomedical surfaces. Microbial adhesion tests were performed using collection strains and twelve clinical strains of Staphylococcus aureus and Staphylococcus epidermidis. The adherence study was performed using a previously published protocol by Kinnari et al. Both collection strains and clinical isolates have shown lower bacterial adhesion to materials modified with respect to the alloy Ti-6Al-4V and the modification with silver reduced the bacterial adhesion for most of all the strains studied. Moreover the percentage of dead bacteria have been evaluated, demonstrating increased proportion of dead bacteria for the modified surfaces. Nanocrystalline silver dissolves releasing both Ag(+) and Ag(0) whereas other silver sources release only Ag(+). We can conclude that YSZ with nanocrystalline silver coating may lead to diminished postoperative infections and to increased corrosion and scratch resistance of YSZ incorporating alloys Ti-6Al-4V.
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Affiliation(s)
- Ramón Pérez-Tanoira
- Department of Clinical Microbiology, IIS-Fundación Jiménez Díaz, Ave Reyes Católicos 2, 28040, Madrid, Spain.
- Otorhinolaryngology-Head and Neck Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.
| | - David Horwat
- Institut Jean Lamour, UMR7198, Université de Lorraine, 54011, Nancy, France
| | - Teemu J Kinnari
- Otorhinolaryngology-Head and Neck Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Concepción Pérez-Jorge
- Department of Clinical Microbiology, IIS-Fundación Jiménez Díaz, Ave Reyes Católicos 2, 28040, Madrid, Spain
| | | | - Sylvie Migot
- Centre de Compétences en Microscopies Electroniques et Microsondes (CC-MEM), Institut Jean Lamour, Parc de Saurupt, CS 50840, 54011, Nancy, France
| | - Jaime Esteban
- Department of Clinical Microbiology, IIS-Fundación Jiménez Díaz, Ave Reyes Católicos 2, 28040, Madrid, Spain
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Izquierdo-Barba I, García-Martín JM, Álvarez R, Palmero A, Esteban J, Pérez-Jorge C, Arcos D, Vallet-Regí M. Nanocolumnar coatings with selective behavior towards osteoblast and Staphylococcus aureus proliferation. Acta Biomater 2015; 15:20-8. [PMID: 25573448 DOI: 10.1016/j.actbio.2014.12.023] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 12/16/2014] [Accepted: 12/23/2014] [Indexed: 11/19/2022]
Abstract
Bacterial colonization and biofilm formation on orthopedic implants is one of the worst scenarios in orthopedic surgery, in terms of both patient prognosis and healthcare costs. Tailoring the surfaces of implants at the nanoscale to actively promote bone bonding while avoiding bacterial colonization represents an interesting challenge to achieving better clinical outcomes. Herein, a Ti6Al4V alloy of medical grade has been coated with Ti nanostructures employing the glancing angle deposition technique by magnetron sputtering. The resulting surfaces have a high density of nanocolumnar structures, which exhibit strongly impaired bacterial adhesion that inhibits biofilm formation, while osteoblasts exhibit good cell response with similar behavior to the initial substrates. These results are discussed on the basis of a "lotus leaf effect" induced by the surface nanostructures and the different sizes and biological characteristics of osteoblasts and Staphylococcus aureus.
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Affiliation(s)
- Isabel Izquierdo-Barba
- Departamento de Química Inorgánica y Bioinorgánica, Facultad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain
| | - José Miguel García-Martín
- IMM-Instituto de Microelectrónica de Madrid (CNM-CSIC), Isaac Newton 8, PTM, E-28760 Tres Cantos, Madrid, Spain
| | - Rafael Álvarez
- Instituto de Ciencia de Materiales de Sevilla (CSIC-Universidad de Sevilla), Americo Vespucio 49, 41092 Seville, Spain
| | - Alberto Palmero
- Instituto de Ciencia de Materiales de Sevilla (CSIC-Universidad de Sevilla), Americo Vespucio 49, 41092 Seville, Spain
| | - Jaime Esteban
- Department of Clinical Microbiology, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Spain
| | - Concepción Pérez-Jorge
- Department of Clinical Microbiology, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Spain
| | - Daniel Arcos
- Departamento de Química Inorgánica y Bioinorgánica, Facultad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain.
| | - María Vallet-Regí
- Departamento de Química Inorgánica y Bioinorgánica, Facultad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain.
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Lozano D, Hernández-López JM, Esbrit P, Arenas MA, Gómez-Barrena E, de Damborenea J, Esteban J, Pérez-Jorge C, Pérez-Tanoira R, Conde A. Influence of the nanostructure of F-doped TiO2films on osteoblast growth and function. J Biomed Mater Res A 2014; 103:1985-90. [DOI: 10.1002/jbm.a.35337] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 09/03/2014] [Accepted: 09/15/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Daniel Lozano
- Grupo de Investigación de Cirugía OsteoArticular; Instituto de Investigación Hospital Universitario La Paz (IdiPAZ); 28046 Madrid Spain
- Laboratorio de Metabolismo Mineral y Óseo; Instituto de Investigación Sanitaria (IIS)-Fundación Jiménez Díaz; UAM, 28040 Madrid, Spain, and RETICEF, Instituto de Salud Carlos III, 28029 Madrid Spain
| | - Juan M. Hernández-López
- Centro Nacional de Investigaciones Metalúrgicas; CENIM/CSIC; Madrid, Avda. Gregorio del Amo 8, 28040 Spain
| | - Pedro Esbrit
- Laboratorio de Metabolismo Mineral y Óseo; Instituto de Investigación Sanitaria (IIS)-Fundación Jiménez Díaz; UAM, 28040 Madrid, Spain, and RETICEF, Instituto de Salud Carlos III, 28029 Madrid Spain
| | - Maria A. Arenas
- Centro Nacional de Investigaciones Metalúrgicas; CENIM/CSIC; Madrid, Avda. Gregorio del Amo 8, 28040 Spain
| | - Enrique Gómez-Barrena
- Grupo de Investigación de Cirugía OsteoArticular; Instituto de Investigación Hospital Universitario La Paz (IdiPAZ); 28046 Madrid Spain
| | - Juan de Damborenea
- Centro Nacional de Investigaciones Metalúrgicas; CENIM/CSIC; Madrid, Avda. Gregorio del Amo 8, 28040 Spain
| | - Jaime Esteban
- Departamento de Microbiología Clínica; Instituto de Investigación Sanitaria (IIS)-Fundación Jiménez Díaz; 28040 Madrid Spain
| | - Concepción Pérez-Jorge
- Departamento de Microbiología Clínica; Instituto de Investigación Sanitaria (IIS)-Fundación Jiménez Díaz; 28040 Madrid Spain
| | - Ramón Pérez-Tanoira
- Departamento de Microbiología Clínica; Instituto de Investigación Sanitaria (IIS)-Fundación Jiménez Díaz; 28040 Madrid Spain
| | - Ana Conde
- Centro Nacional de Investigaciones Metalúrgicas; CENIM/CSIC; Madrid, Avda. Gregorio del Amo 8, 28040 Spain
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Prieto-Pérez L, Pérez-Tanoira R, Petkova-Saiz E, Pérez-Jorge C, Lopez-Rodriguez C, Alvarez-Alvarez B, Polo-Sabau J, Esteban J. Osteomyelitis: a descriptive study. Clin Orthop Surg 2014; 6:20-5. [PMID: 24605185 PMCID: PMC3942598 DOI: 10.4055/cios.2014.6.1.20] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Accepted: 06/24/2013] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND To analyze the incidence and clinical-microbiological characteristics of osteomyelitis (OM) in a tertiary Spanish hospital. METHODS All cases diagnosed with OM between January 2007 and December 2010 were retrospectively reviewed. The variables examined include epidemiological characteristics, risk factors, affected bone, radiographic changes, histology, microbiological culture results, antibiotic treatment, and the need for surgery. RESULTS Sixty-three cases of OM were diagnosed. Twenty-six patients (41.3%) had acute OM whereas 37 patients (58.7%) were classified as chronic OM. OM may result from haematogenous or contiguous microbial seeding. In this group, 49 patients (77.8%) presented with OM secondary to a contiguous source of infection and 14 patients had hematogenous OM (22.2%). Staphylococcus aureus was the most commonly found microorganism. CONCLUSIONS OM mainly affected patients with risk factors related to the presence of vascular diseases. Antibiotic treatment must be guided by susceptibility patterns of individual microorganisms, although it must be performed together with surgery in most of the cases.
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Affiliation(s)
- Laura Prieto-Pérez
- Department of Internal Medicine, IIS-Fundación Jiménez Díaz, Madrid, Spain
| | - Ramón Pérez-Tanoira
- Department of Clinical Microbiology, IIS-Fundación Jiménez Díaz, Madrid, Spain
| | | | | | | | | | - Jorge Polo-Sabau
- Department of Internal Medicine, IIS-Fundación Jiménez Díaz, Madrid, Spain
| | - Jaime Esteban
- Department of Clinical Microbiology, IIS-Fundación Jiménez Díaz, Madrid, Spain
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10
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Pérez-Jorge C, Conde A, Arenas MA, Pérez-Tanoira R, Matykina E, de Damborenea JJ, Gómez-Barrena E, Esteban J. In vitro assessment of Staphylococcus epidermidis and Staphylococcus aureus adhesion on TiO2 nanotubes on Ti-6Al-4V alloy. J Biomed Mater Res A 2012; 100:1696-705. [DOI: 10.1002/jbm.a.34118] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2011] [Revised: 12/02/2011] [Accepted: 02/01/2012] [Indexed: 11/10/2022]
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11
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Pérez-Tanoira R, Pérez-Jorge C, Endrino JL, Gómez-Barrena E, Horwat D, Pierson JF, Esteban J. Bacterial adhesion on biomedical surfaces covered by micrometric silver Islands. J Biomed Mater Res A 2012; 100:1521-8. [DOI: 10.1002/jbm.a.34090] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Revised: 11/14/2011] [Accepted: 01/04/2012] [Indexed: 11/05/2022]
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