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Fernández JJ, Mancebo C, Garcinuño S, March G, Alvarez Y, Alonso S, Inglada L, Blanco J, Orduña A, Montero O, Sandoval TA, Cubillos-Ruiz JR, Bustamante-Munguira E, Fernández N, Crespo MS. Innate IRE1α-XBP1 activation by viral single-stranded RNA and its influence on lung cytokine production during SARS-CoV-2 pneumonia. Genes Immun 2024; 25:43-54. [PMID: 38146001 DOI: 10.1038/s41435-023-00243-6] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 12/04/2023] [Accepted: 12/07/2023] [Indexed: 12/27/2023]
Abstract
The utilization of host-cell machinery during SARS-CoV-2 infection can overwhelm the protein-folding capacity of the endoplasmic reticulum and activate the unfolded protein response (UPR). The IRE1α-XBP1 arm of the UPR could also be activated by viral RNA via Toll-like receptors. Based on these premises, a study to gain insight into the pathogenesis of COVID-19 disease was conducted using nasopharyngeal exudates and bronchioloalveolar aspirates. The presence of the mRNA of spliced XBP1 and a high expression of cytokine mRNAs were observed during active infection. TLR8 mRNA showed an overwhelming expression in comparison with TLR7 mRNA in bronchioloalveolar aspirates of COVID-19 patients, thus suggesting the presence of monocytes and monocyte-derived dendritic cells (MDDCs). In vitro experiments in MDDCs activated with ssRNA40, a synthetic mimic of SARS-CoV-2 RNA, showed induction of XBP1 splicing and the expression of proinflammatory cytokines. These responses were blunted by the IRE1α inhibitor MKC8866, the TLR8 antagonist CU-CPT9a, and knockdown of TLR8 receptor. In contrast, the IRE1α-XBP1 activator IXA4 enhanced these responses. Based on these findings, the TLR8/IRE1α system seems to play a significant role in the induction of the proinflammatory cytokines associated with severe COVID-19 disease and might be a druggable target to control cytokine storm.
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Affiliation(s)
- José J Fernández
- Unidad de Excelencia Instituto de Biomedicina y Genética Molecular, CSIC-Universidad de Valladolid, 47003, Valladolid, Spain
| | - Cristina Mancebo
- Unidad de Excelencia Instituto de Biomedicina y Genética Molecular, CSIC-Universidad de Valladolid, 47003, Valladolid, Spain
- Departamento de Bioquímica, Biología Molecular y Fisiología, Universidad de Valladolid, 47003, Valladolid, Spain
| | - Sonsoles Garcinuño
- Servicio de Microbiología, Hospital Clínico Universitario de Valladolid, Universidad de Valladolid, 47003, Valladolid, Spain
| | - Gabriel March
- Servicio de Microbiología, Hospital Clínico Universitario de Valladolid, Universidad de Valladolid, 47003, Valladolid, Spain
| | - Yolanda Alvarez
- Unidad de Excelencia Instituto de Biomedicina y Genética Molecular, CSIC-Universidad de Valladolid, 47003, Valladolid, Spain
- Departamento de Bioquímica, Biología Molecular y Fisiología, Universidad de Valladolid, 47003, Valladolid, Spain
| | - Sara Alonso
- Unidad de Excelencia Instituto de Biomedicina y Genética Molecular, CSIC-Universidad de Valladolid, 47003, Valladolid, Spain
| | - Luis Inglada
- Servicio de Medicina Interna, Hospital Universitario Rio-Hortega, 47012, Valladolid, Spain
| | - Jesús Blanco
- Servicio de Medicina Intensiva, Hospital Universitario Rio-Hortega, 47012, Valladolid, Spain
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
| | - Antonio Orduña
- Servicio de Microbiología, Hospital Clínico Universitario de Valladolid, Universidad de Valladolid, 47003, Valladolid, Spain
| | - Olimpio Montero
- Unidad de Excelencia Instituto de Biomedicina y Genética Molecular, CSIC-Universidad de Valladolid, 47003, Valladolid, Spain
| | - Tito A Sandoval
- Weill Cornell Graduate School of Medical Sciences, Cornell University, New York, NY, 10065, USA
- Department of Obstetrics and Gynecology, Weill Cornell Medicine, New York, NY, 10065, USA
- Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY, 10065, USA
| | - Juan R Cubillos-Ruiz
- Weill Cornell Graduate School of Medical Sciences, Cornell University, New York, NY, 10065, USA
- Department of Obstetrics and Gynecology, Weill Cornell Medicine, New York, NY, 10065, USA
- Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY, 10065, USA
| | - Elena Bustamante-Munguira
- Servicio de Medicina Intensiva, Hospital Clínico Universitario de Valladolid, 47003, Valladolid, Spain
| | - Nieves Fernández
- Unidad de Excelencia Instituto de Biomedicina y Genética Molecular, CSIC-Universidad de Valladolid, 47003, Valladolid, Spain
- Departamento de Bioquímica, Biología Molecular y Fisiología, Universidad de Valladolid, 47003, Valladolid, Spain
| | - Mariano Sánchez Crespo
- Unidad de Excelencia Instituto de Biomedicina y Genética Molecular, CSIC-Universidad de Valladolid, 47003, Valladolid, Spain.
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Serrano-Lorenzo P, Gobelli D, Garrido-Moraga R, Esteban-Amo MJ, López-López JR, Orduña A, de la Fuente MA, Martín MA, Simarro M. Development of a novel in vitro model to study the modulatory role of the respiratory complex I in macrophage effector functions. PLoS One 2023; 18:e0291442. [PMID: 37725617 PMCID: PMC10508620 DOI: 10.1371/journal.pone.0291442] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Accepted: 08/29/2023] [Indexed: 09/21/2023] Open
Abstract
Increasing evidence demonstrate that the electron transfer chain plays a critical role in controlling the effector functions of macrophages. In this work, we have generated a Ndufs4-/- murine macrophage cell lines. The Ndufs4 gene, which encodes a supernumerary subunit of complex I, is a mutational hotspot in Leigh syndrome patients. Ndufs4-/- macrophages showed decreased complex I activity, altered complex I assembly, and lower levels of maximal respiration and ATP production. These mitochondrial respiration alterations were associated with a shift towards a pro-inflammatory cytokine profile after lipopolysaccharide challenge and improved ability to phagocytose Gram-negative bacteria.
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Affiliation(s)
- Pablo Serrano-Lorenzo
- Hospital 12 de Octubre Research Institute (imas12), Madrid, Spain
- Biomedical Network Research Centre on Rare Diseases (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
- Mitochondrial Disorders Laboratory, Clinical Biochemistry Department, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Dino Gobelli
- Department of Cell Biology, Histology and Pharmacology, Faculty of Medicine, University of Valladolid, Valladolid, Spain
- Unit of Excellence Institute of Biomedicine and Molecular Genetics (IBGM), University of Valladolid and Spanish National Research Council (CSIC), Valladolid, Spain
| | - Rocío Garrido-Moraga
- Hospital 12 de Octubre Research Institute (imas12), Madrid, Spain
- Biomedical Network Research Centre on Rare Diseases (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
- Mitochondrial Disorders Laboratory, Clinical Biochemistry Department, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - María J. Esteban-Amo
- Department of Cell Biology, Histology and Pharmacology, Faculty of Medicine, University of Valladolid, Valladolid, Spain
- Unit of Excellence Institute of Biomedicine and Molecular Genetics (IBGM), University of Valladolid and Spanish National Research Council (CSIC), Valladolid, Spain
| | - José R. López-López
- Unit of Excellence Institute of Biomedicine and Molecular Genetics (IBGM), University of Valladolid and Spanish National Research Council (CSIC), Valladolid, Spain
- Department of Department of Biochemistry and Molecular Biology and Physiology, Faculty of Medicine, University of Valladolid, Valladolid, Spain
| | - Antonio Orduña
- Division of Microbiology, Hospital Clínico of Valladolid, Valladolid, Spain
- Department of Microbiology, University of Valladolid, Valladolid, Spain
| | - Miguel A. de la Fuente
- Department of Cell Biology, Histology and Pharmacology, Faculty of Medicine, University of Valladolid, Valladolid, Spain
- Unit of Excellence Institute of Biomedicine and Molecular Genetics (IBGM), University of Valladolid and Spanish National Research Council (CSIC), Valladolid, Spain
| | - Miguel A. Martín
- Hospital 12 de Octubre Research Institute (imas12), Madrid, Spain
- Biomedical Network Research Centre on Rare Diseases (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
- Mitochondrial Disorders Laboratory, Clinical Biochemistry Department, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - María Simarro
- Department of Cell Biology, Histology and Pharmacology, Faculty of Medicine, University of Valladolid, Valladolid, Spain
- Unit of Excellence Institute of Biomedicine and Molecular Genetics (IBGM), University of Valladolid and Spanish National Research Council (CSIC), Valladolid, Spain
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3
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Gobelli D, Serrano-Lorenzo P, Esteban-Amo MJ, Serna J, Pérez-García MT, Orduña A, Jourdain AA, Martín-Casanueva MÁ, Á. de la Fuente M, Simarro M. The mitochondrial succinate dehydrogenase complex controls the STAT3-IL-10 pathway in inflammatory macrophages. iScience 2023; 26:107473. [PMID: 37575201 PMCID: PMC10416071 DOI: 10.1016/j.isci.2023.107473] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 02/17/2023] [Accepted: 07/21/2023] [Indexed: 08/15/2023] Open
Abstract
The functions of macrophages are tightly regulated by their metabolic state. However, the role of the mitochondrial electron transport chain (ETC) in macrophage functions remains understudied. Here, we provide evidence that the succinate dehydrogenase (SDH)/complex II (CII) is required for respiration and plays a role in controlling effector responses in macrophages. We find that the absence of the catalytic subunits Sdha and Sdhb in macrophages impairs their ability to effectively stabilize HIF-1α and produce the pro-inflammatory cytokine IL-1β in response to LPS stimulation. We also arrive at the novel result that both subunits are essential for the LPS-driven production of IL-10, a potent negative feedback regulator of the macrophage inflammatory response. This phenomenon is explained by the fact that the absence of Sdha and Sdhb leads to the inhibition of Stat3 tyrosine phosphorylation, caused partially by the excessive accumulation of mitochondrial reactive oxygen species (mitoROS) in the knockout cells.
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Affiliation(s)
- Dino Gobelli
- Department of Cell Biology, Histology and Pharmacology, Faculty of Medicine, University of Valladolid, 47005 Valladolid, Spain
- Unit of Excellence Institute of Biomedicine and Molecular Genetics (IBGM), University of Valladolid and Spanish National Research Council (CSIC), 47003 Valladolid, Spain
| | - Pablo Serrano-Lorenzo
- Hospital 12 de Octubre Research Institute (imas12), 28041 Madrid, Spain
- Biomedical Network Research Centre on Rare Diseases (CIBERER), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Mitochondrial Disorders Laboratory, Clinical Biochemistry Department, Hospital Universitario 12 de Octubre, 28041 Madrid, Spain
| | - María J. Esteban-Amo
- Department of Cell Biology, Histology and Pharmacology, Faculty of Medicine, University of Valladolid, 47005 Valladolid, Spain
- Unit of Excellence Institute of Biomedicine and Molecular Genetics (IBGM), University of Valladolid and Spanish National Research Council (CSIC), 47003 Valladolid, Spain
| | - Julia Serna
- Unit of Excellence Institute of Biomedicine and Molecular Genetics (IBGM), University of Valladolid and Spanish National Research Council (CSIC), 47003 Valladolid, Spain
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Medicine, University of Valladolid, 47005 Valladolid, Spain
| | - M. Teresa Pérez-García
- Unit of Excellence Institute of Biomedicine and Molecular Genetics (IBGM), University of Valladolid and Spanish National Research Council (CSIC), 47003 Valladolid, Spain
- Department of Biochemistry and Molecular Biology and Physiology, Faculty of Medicine, University of Valladolid, 47005 Valladolid, Spain
| | - Antonio Orduña
- Division of Microbiology, Hospital Clínico of Valladolid, 47003 Valladolid, Spain
- Department of Microbiology, University of Valladolid, 47005 Valladolid, Spain
| | - Alexis A. Jourdain
- Department of Immunobiology, Faculty of Biology and Medicine, University of Lausanne, 1011 Lausanne, Switzerland
| | - Miguel Á. Martín-Casanueva
- Hospital 12 de Octubre Research Institute (imas12), 28041 Madrid, Spain
- Biomedical Network Research Centre on Rare Diseases (CIBERER), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Mitochondrial Disorders Laboratory, Clinical Biochemistry Department, Hospital Universitario 12 de Octubre, 28041 Madrid, Spain
| | - Miguel Á. de la Fuente
- Department of Cell Biology, Histology and Pharmacology, Faculty of Medicine, University of Valladolid, 47005 Valladolid, Spain
- Unit of Excellence Institute of Biomedicine and Molecular Genetics (IBGM), University of Valladolid and Spanish National Research Council (CSIC), 47003 Valladolid, Spain
| | - María Simarro
- Department of Cell Biology, Histology and Pharmacology, Faculty of Medicine, University of Valladolid, 47005 Valladolid, Spain
- Unit of Excellence Institute of Biomedicine and Molecular Genetics (IBGM), University of Valladolid and Spanish National Research Council (CSIC), 47003 Valladolid, Spain
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Shin JJ, Fan W, Par-Young J, Piecychna M, Leng L, Israni-Winger K, Qing H, Gu J, Zhao H, Schulz WL, Unlu S, Kuster J, Young G, Liu J, Ko AI, Baeza Garcia A, Sauler M, Wisnewski AV, Young L, Orduña A, Wang A, Klementina O, Garcia AB, Hegyi P, Armstrong ME, Mitchell P, Ordiz DB, Garami A, Kang I, Bucala R. MIF is a common genetic determinant of COVID-19 symptomatic infection and severity. QJM 2023; 116:205-212. [PMID: 36222594 PMCID: PMC9620729 DOI: 10.1093/qjmed/hcac234] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 09/29/2022] [Accepted: 10/02/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Genetic predisposition to coronavirus disease 2019 (COVID-19) may contribute to its morbidity and mortality. Because cytokines play an important role in multiple phases of infection, we examined whether commonly occurring, functional polymorphisms in macrophage migration inhibitory factor (MIF) are associated with COVID-19 infection or disease severity. AIM To determine associations of common functional polymorphisms in MIF with symptomatic COVID-19 or its severity. METHODS This retrospective case-control study utilized 1171 patients with COVID-19 from three tertiary medical centers in the USA, Hungary and Spain, together with a group of 637 pre-pandemic, healthy control subjects. Functional MIF promoter alleles (-794 CATT5-8,rs5844572), serum MIF and soluble MIF receptor levels, and available clinical characteristics were measured and correlated with COVID-19 diagnosis and hospitalization. Experimental mice genetically engineered to express human high- or low-expression MIF alleles were studied for response to coronavirus infection. RESULTS In patients with COVID-19, there was a lower frequency of the high-expression MIF CATT7 allele when compared to healthy controls [11% vs. 19%, odds ratio (OR) 0.54 [0.41-0.72], P < 0.0001]. Among inpatients with COVID-19 (n = 805), there was a higher frequency of the MIF CATT7 allele compared to outpatients (n = 187) (12% vs. 5%, OR 2.87 [1.42-5.78], P = 0.002). Inpatients presented with higher serum MIF levels when compared to outpatients or uninfected healthy controls (87 ng/ml vs. 35 ng/ml vs. 29 ng/ml, P < 0.001, respectively). Among inpatients, circulating MIF concentrations correlated with admission ferritin (r = 0.19, P = 0.01) and maximum CRP (r = 0.16, P = 0.03) levels. Mice with a human high-expression MIF allele showed more severe disease than those with a low-expression MIF allele. CONCLUSIONS In this multinational retrospective study of 1171 subjects with COVID-19, the commonly occurring -794 CATT7MIF allele is associated with reduced susceptibility to symptomatic SARS-CoV-2 infection but increased disease progression as assessed by hospitalization. These findings affirm the importance of the high-expression CATT7MIF allele, which occurs in 19% of the population, in different stages of COVID-19 infection.
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Affiliation(s)
- Junghee J Shin
- Sections of Rheumatology, Allergy and Immunology, New Haven, CT, USA
| | - Wei Fan
- Sections of Rheumatology, Allergy and Immunology, New Haven, CT, USA
| | | | - Marta Piecychna
- Sections of Rheumatology, Allergy and Immunology, New Haven, CT, USA
| | - Lin Leng
- Sections of Rheumatology, Allergy and Immunology, New Haven, CT, USA
| | | | - Hua Qing
- Department of Medicine, Department of Immunobiology, New Haven, CT, USA
| | - Jianlei Gu
- Department of Pathology, New Haven, CT, USA
| | | | - Wade L Schulz
- Department of Medicine, Department of Immunobiology, New Haven, CT, USA
| | - Serhan Unlu
- Sections of Rheumatology, Allergy and Immunology, New Haven, CT, USA
| | - John Kuster
- Sections of Rheumatology, Allergy and Immunology, New Haven, CT, USA
| | | | - Jian Liu
- Department of Pathology, New Haven, CT, USA
| | | | | | - Maor Sauler
- Pulmonary, Critical Care, and Sleep Medicine, New Haven, CT, USA
| | | | | | - Antonio Orduña
- Microbiology Service. Hospital Clínico Universtario. Valladolid. Spain
| | - Andrew Wang
- Sections of Rheumatology, Allergy and Immunology, New Haven, CT, USA
- Department of Medicine, Department of Immunobiology, New Haven, CT, USA
| | - Ocskay Klementina
- Universidad de Valladolid, Valladolid, Spain; University of Pécs, Pécs, Hungary. Institute for Translational Medicine, Medical School, University of Pécs, Pécs, Hungary
- Centre for Translational Medicine, Semmelweis University, Budapest Hungary
| | - Antonio Blesa Garcia
- Mucosal Immunology Lab. Unidad de Excelencia Instituto de Biología y Genética Molecular (IBGM), Universidad de Valladolid-CSIC. Valladolid. Spain
| | - Peter Hegyi
- Universidad de Valladolid, Valladolid, Spain; University of Pécs, Pécs, Hungary. Institute for Translational Medicine, Medical School, University of Pécs, Pécs, Hungary
- Centre for Translational Medicine, Semmelweis University, Budapest Hungary
- Division of Pancreatic Diseases, Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | | | | | - David Bernardo Ordiz
- Division of Pancreatic Diseases, Heart and Vascular Center, Semmelweis University, Budapest, Hungary
- Centro de Investigaciones Biomédicas en Red de Enfermedades infecciosas (CIBERinfec). Madrid. Spain
| | - András Garami
- Universidad de Valladolid, Valladolid, Spain; University of Pécs, Pécs, Hungary. Institute for Translational Medicine, Medical School, University of Pécs, Pécs, Hungary
| | - Insoo Kang
- Sections of Rheumatology, Allergy and Immunology, New Haven, CT, USA
| | - Richard Bucala
- Sections of Rheumatology, Allergy and Immunology, New Haven, CT, USA
- Department of Pathology, New Haven, CT, USA
- Yale Schools of Medicine and Public Health, New Haven, CT, USA
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5
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Valdés A, Moreno LO, Rello SR, Orduña A, Bernardo D, Cifuentes A. Metabolomics study of COVID-19 patients in four different clinical stages. Sci Rep 2022; 12:1650. [PMID: 35102215 PMCID: PMC8803913 DOI: 10.1038/s41598-022-05667-0] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 12/13/2021] [Indexed: 12/22/2022] Open
Abstract
SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) is the coronavirus strain causing the respiratory pandemic COVID-19 (coronavirus disease 2019). To understand the pathobiology of SARS-CoV-2 in humans it is necessary to unravel the metabolic changes that are produced in the individuals once the infection has taken place. The goal of this work is to provide new information about the altered biomolecule profile and with that the altered biological pathways of patients in different clinical situations due to SARS-CoV-2 infection. This is done via metabolomics using HPLC-QTOF-MS analysis of plasma samples at COVID-diagnose from a total of 145 adult patients, divided into different clinical stages based on their subsequent clinical outcome (25 negative controls (non-COVID); 28 positive patients with asymptomatic disease not requiring hospitalization; 27 positive patients with mild disease defined by a total time in hospital lower than 10 days; 36 positive patients with severe disease defined by a total time in hospital over 20 days and/or admission at the ICU; and 29 positive patients with fatal outcome or deceased). Moreover, follow up samples between 2 and 3 months after hospital discharge were also obtained from the hospitalized patients with mild prognosis. The final goal of this work is to provide biomarkers that can help to better understand how the COVID-19 illness evolves and to predict how a patient could progress based on the metabolites profile of plasma obtained at an early stage of the infection. In the present work, several metabolites were found as potential biomarkers to distinguish between the end-stage and the early-stage (or non-COVID) disease groups. These metabolites are mainly involved in the metabolism of carnitines, ketone bodies, fatty acids, lysophosphatidylcholines/phosphatidylcholines, tryptophan, bile acids and purines, but also omeprazole. In addition, the levels of several of these metabolites decreased to "normal" values at hospital discharge, suggesting some of them as early prognosis biomarkers in COVID-19 at diagnose.
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Affiliation(s)
- Alberto Valdés
- Laboratory of Foodomics, Institute of Food Science Research, CIAL, CSIC, Nicolás Cabrera 9, 28049, Madrid, Spain
| | - Lorena Ortega Moreno
- Dpt. Medicina, Universidad Autónoma de Madrid, Madrid, Spain
- Instituto de Investigación Sanitaria Hospital Universitario de La Princesa, Madrid, Spain
- Centro de Investigación Biomédica en Red (CIBERehd), Barcelona, Spain
| | - Silvia Rojo Rello
- Servicio de Microbiología, Hospital Clínico Universitario de Valladolid, 47004, Valladolid, Spain
| | - Antonio Orduña
- Servicio de Microbiología, Hospital Clínico Universitario de Valladolid, 47004, Valladolid, Spain
- Departamento de Microbiología, Universidad de Valladolid, Valladolid, Spain
| | - David Bernardo
- Centro de Investigación Biomédica en Red (CIBERehd), Barcelona, Spain
- Unidad de Excelencia Instituto de Biomedicina y Genética Molecular (IBGM), Universidad de Valladolid-CSIC, Valladolid, Spain
| | - Alejandro Cifuentes
- Laboratory of Foodomics, Institute of Food Science Research, CIAL, CSIC, Nicolás Cabrera 9, 28049, Madrid, Spain.
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6
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Martín MC, Jurado A, Abad-Molina C, Orduña A, Yarce O, Navas AM, Cunill V, Escobar D, Boix F, Burillo-Sanz S, Vegas-Sánchez MC, Jiménez-de Las Pozas Y, Melero J, Aguilar M, Sobieschi OI, López-Hoyos M, Ocejo-Vinyals G, San Segundo D, Almeida D, Medina S, Fernández L, Vergara E, Quirant B, Martínez-Cáceres E, Boiges M, Alonso M, Esparcia-Pinedo L, López-Sanz C, Muñoz-Vico J, López-Palmero S, Trujillo A, Álvarez P, Prada Á, Monzón D, Ontañón J, Marco FM, Mora S, Rojo R, González-Martínez G, Martínez-Saavedra MT, Gil-Herrera J, Cantenys-Molina S, Hernández M, Perurena-Prieto J, Rodríguez-Bayona B, Martínez A, Ocaña E, Molina J. The age again in the eye of the COVID-19 storm: evidence-based decision making. Immun Ageing 2021; 18:24. [PMID: 34016150 PMCID: PMC8134808 DOI: 10.1186/s12979-021-00237-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 05/11/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND One hundred fifty million contagions, more than 3 million deaths and little more than 1 year of COVID-19 have changed our lives and our health management systems forever. Ageing is known to be one of the significant determinants for COVID-19 severity. Two main reasons underlie this: immunosenescence and age correlation with main COVID-19 comorbidities such as hypertension or dyslipidaemia. This study has two aims. The first is to obtain cut-off points for laboratory parameters that can help us in clinical decision-making. The second one is to analyse the effect of pandemic lockdown on epidemiological, clinical, and laboratory parameters concerning the severity of the COVID-19. For these purposes, 257 of SARSCoV2 inpatients during pandemic confinement were included in this study. Moreover, 584 case records from a previously analysed series, were compared with the present study data. RESULTS Concerning the characteristics of lockdown series, mild cases accounted for 14.4, 54.1% were moderate and 31.5%, severe. There were 32.5% of home contagions, 26.3% community transmissions, 22.5% nursing home contagions, and 8.8% corresponding to frontline worker contagions regarding epidemiological features. Age > 60 and male sex are hereby confirmed as severity determinants. Equally, higher severity was significantly associated with higher IL6, CRP, ferritin, LDH, and leukocyte counts, and a lower percentage of lymphocyte, CD4 and CD8 count. Comparing this cohort with a previous 584-cases series, mild cases were less than those analysed in the first moment of the pandemic and dyslipidaemia became more frequent than before. IL-6, CRP and LDH values above 69 pg/mL, 97 mg/L and 328 U/L respectively, as well as a CD4 T-cell count below 535 cells/μL, were the best cut-offs predicting severity since these parameters offered reliable areas under the curve. CONCLUSION Age and sex together with selected laboratory parameters on admission can help us predict COVID-19 severity and, therefore, make clinical and resource management decisions. Demographic features associated with lockdown might affect the homogeneity of the data and the robustness of the results.
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Affiliation(s)
- María C Martín
- Centro de Hemoterapia y Hemodonación de Castilla y León, Valladolid, Spain
| | - Aurora Jurado
- Department of Immunology and Allergology, Hospital Universitario Reina Sofía-Instituto de Investigación Biomédica de Córdoba (IMIBIC), Avd. Menéndez Pidal s/n, 14004, Córdoba, Spain.
| | - Cristina Abad-Molina
- Department of Microbiology and Immunology, Hospital Clínico Universitario, Valladolid, Spain
| | - Antonio Orduña
- Department of Microbiology and Immunology, Hospital Clínico Universitario, Valladolid, Spain
| | - Oscar Yarce
- Department of Immunology and Allergology, Hospital Universitario Reina Sofía-Instituto de Investigación Biomédica de Córdoba (IMIBIC), Avd. Menéndez Pidal s/n, 14004, Córdoba, Spain
| | - Ana M Navas
- Department of Immunology and Allergology, Hospital Universitario Reina Sofía-Instituto de Investigación Biomédica de Córdoba (IMIBIC), Avd. Menéndez Pidal s/n, 14004, Córdoba, Spain
| | - Vanesa Cunill
- Department of Immunology, Hospital Universitario Son Espases-Human Immunopathology Research Laboratory, Institut d'Investigació Sanitària de les Illes Balears (IdISBa), Palma de Mallorca, Spain
| | - Danilo Escobar
- Department of Immunology, Hospital Universitario Son Espases-Human Immunopathology Research Laboratory, Institut d'Investigació Sanitària de les Illes Balears (IdISBa), Palma de Mallorca, Spain
| | - Francisco Boix
- Department of Immunology, Hospital Clínico Universitario, Salamanca, Spain
| | | | | | | | - Josefa Melero
- Department of Immunology, Hospital Universitario de Badajoz, Badajoz, Spain
| | - Marta Aguilar
- Department of Immunology, Hospital Universitario de Badajoz, Badajoz, Spain
| | | | - Marcos López-Hoyos
- Department of Immunology, Hospital Universitario Marqués de Valdecilla, Santander, Spain
| | - Gonzalo Ocejo-Vinyals
- Department of Immunology, Hospital Universitario Marqués de Valdecilla, Santander, Spain
| | - David San Segundo
- Department of Immunology, Hospital Universitario Marqués de Valdecilla, Santander, Spain
| | - Delia Almeida
- Laboratory of Immunology, Complejo Hospitalario Nuestra Señora de la Candelaria, Santa Cruz de Tenerife, Spain
| | - Silvia Medina
- Laboratory of Immunology, Complejo Hospitalario Nuestra Señora de la Candelaria, Santa Cruz de Tenerife, Spain
| | - Luis Fernández
- Laboratoy of Immunology and Genetics, Hospital San Pedro de Alcántara, Cáceres, Spain
| | - Esther Vergara
- Laboratoy of Immunology and Genetics, Hospital San Pedro de Alcántara, Cáceres, Spain
| | - Bibiana Quirant
- Department of Immunology, Hospital Germans Trias i Pujols, Barcelona, Spain
| | | | - Marc Boiges
- Department of Immunology, Hospital Germans Trias i Pujols, Barcelona, Spain
| | - Marta Alonso
- Department of Immunology, Hospital de Cruces, Baracaldo, Spain
| | | | - Celia López-Sanz
- Department of Immunology, Hospital Universitario La Princesa, Madrid, Spain
| | | | | | - Antonio Trujillo
- Department of Immunology and Allergology, Hospital Universitario Reina Sofía-Instituto de Investigación Biomédica de Córdoba (IMIBIC), Avd. Menéndez Pidal s/n, 14004, Córdoba, Spain
| | - Paula Álvarez
- Department of Immunology and Allergology, Hospital Universitario Reina Sofía-Instituto de Investigación Biomédica de Córdoba (IMIBIC), Avd. Menéndez Pidal s/n, 14004, Córdoba, Spain
| | - Álvaro Prada
- Department of Immunology, Hospital de Donostia, San Sebastián, Spain
| | - David Monzón
- Department of Immunology, Hospital de Donostia, San Sebastián, Spain
| | - Jesús Ontañón
- Unit of Immunology, Hospital General Universitario, Albacete, Spain
| | | | - Sergio Mora
- Laboratory Unit, Hospital General, Alicante, Spain
| | - Ricardo Rojo
- Department of Immunology, Complejo Hospitalario, La Coruña, Spain
| | - Gema González-Martínez
- Unit of Immunology, Hospital Universitario Insular-Materno Infantil, Las Palmas de Gran Canaria, Spain
| | - María T Martínez-Saavedra
- Unit of Immunology, Hospital Universitario Insular-Materno Infantil, Las Palmas de Gran Canaria, Spain
| | - Juana Gil-Herrera
- Department of Immunology, Hospital General Universitario e Instituto de Investigación Sanitaria, "Gregorio Marañón", Madrid, Spain
| | - Sergi Cantenys-Molina
- Department of Immunology, Hospital General Universitario e Instituto de Investigación Sanitaria, "Gregorio Marañón", Madrid, Spain
| | - Manuel Hernández
- Department of Immunology, Hospital Universitario Vall d'Hebron, Barcelona, Spain
| | | | | | | | - Esther Ocaña
- Laboratory Unit, Complejo Hospitalario, Jaén, Spain
| | - Juan Molina
- Department of Immunology and Allergology, Hospital Universitario Reina Sofía-Instituto de Investigación Biomédica de Córdoba (IMIBIC), Avd. Menéndez Pidal s/n, 14004, Córdoba, Spain
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Bernardi A, Gobelli D, Serna J, Nawrocka P, March-Rosselló G, Orduña A, Kozlowski P, Simarro M, de la Fuente MA. Novel fluorescent-based reporter cell line engineered for monitoring homologous recombination events. PLoS One 2021; 16:e0237413. [PMID: 33930025 PMCID: PMC8087102 DOI: 10.1371/journal.pone.0237413] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 04/13/2021] [Indexed: 12/19/2022] Open
Abstract
Homologous recombination (HR) faithfully restores DNA double-strand breaks. Defects in this HR repair pathway are associated with cancer predisposition. In genetic engineering, HR has been used extensively to study gene function and it represents an ideal method of gene therapy for single gene disorders. Here, we present a novel assay to measure HR in living cells. The HR substrate consisted of a non-fluorescent 3’ truncated form of the eGFP gene and was integrated into the AAVS1 locus, known as a safe harbor. The donor DNA template comprised a 5’ truncated eGFP copy and was delivered via AAV particles. HR mediated repair restored full-length eGFP coding sequence, resulting in eGFP+ cells. The utility of our assay in quantifying HR events was validated by exploring the impact of the overexpression of HR promoters and the siRNA-mediated silencing of genes known to play a role in DNA repair on the frequency of HR. We conclude that this novel assay represents a useful tool to further investigate the mechanisms that control HR and test continually emerging tools for HR-mediated genome editing.
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Affiliation(s)
- Alejandra Bernardi
- Institute of Biomedicine and Molecular Genetics (IBGM) of Valladolid, Valladolid, Spain
| | - Dino Gobelli
- Institute of Biomedicine and Molecular Genetics (IBGM) of Valladolid, Valladolid, Spain
| | - Julia Serna
- Institute of Biomedicine and Molecular Genetics (IBGM) of Valladolid, Valladolid, Spain
| | - Paulina Nawrocka
- Department of Molecular Genetics, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland
| | | | - Antonio Orduña
- Division of Microbiology, Hospital Clínico of Valladolid, Valladolid, Spain.,Microbiology Department, University of Valladolid, Valladolid, Spain
| | - Piotr Kozlowski
- Department of Molecular Genetics, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland
| | - María Simarro
- Institute of Biomedicine and Molecular Genetics (IBGM) of Valladolid, Valladolid, Spain.,Department of Nursing-"Grupo de Investigación en Cuidados de Enfermería" GICE, University of Valladolid, Valladolid, Spain
| | - Miguel A de la Fuente
- Institute of Biomedicine and Molecular Genetics (IBGM) of Valladolid, Valladolid, Spain.,Department of Cell Biology, Histology and Pharmacology, University of Valladolid, Valladolid, Spain
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8
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Bermejo-Martin JF, González-Rivera M, Almansa R, Micheloud D, Tedim AP, Domínguez-Gil M, Resino S, Martín-Fernández M, Ryan Murua P, Pérez-García F, Tamayo L, Lopez-Izquierdo R, Bustamante E, Aldecoa C, Gómez JM, Rico-Feijoo J, Orduña A, Méndez R, Fernández Natal I, Megías G, González-Estecha M, Carriedo D, Doncel C, Jorge N, Ortega A, de la Fuente A, Del Campo F, Fernández-Ratero JA, Trapiello W, González-Jiménez P, Ruiz G, Kelvin AA, Ostadgavahi AT, Oneizat R, Ruiz LM, Miguéns I, Gargallo E, Muñoz I, Pelegrin S, Martín S, García Olivares P, Cedeño JA, Ruiz Albi T, Puertas C, Berezo JÁ, Renedo G, Herrán R, Bustamante-Munguira J, Enríquez P, Cicuendez R, Blanco J, Abadia J, Gómez Barquero J, Mamolar N, Blanca-López N, Valdivia LJ, Fernández Caso B, Mantecón MÁ, Motos A, Fernandez-Barat L, Ferrer R, Barbé F, Torres A, Menéndez R, Eiros JM, Kelvin DJ. Viral RNA load in plasma is associated with critical illness and a dysregulated host response in COVID-19. Crit Care 2020; 24:691. [PMID: 33317616 PMCID: PMC7734467 DOI: 10.1186/s13054-020-03398-0] [Citation(s) in RCA: 157] [Impact Index Per Article: 39.3] [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: 09/03/2020] [Accepted: 11/18/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND COVID-19 can course with respiratory and extrapulmonary disease. SARS-CoV-2 RNA is detected in respiratory samples but also in blood, stool and urine. Severe COVID-19 is characterized by a dysregulated host response to this virus. We studied whether viral RNAemia or viral RNA load in plasma is associated with severe COVID-19 and also to this dysregulated response. METHODS A total of 250 patients with COVID-19 were recruited (50 outpatients, 100 hospitalized ward patients and 100 critically ill). Viral RNA detection and quantification in plasma was performed using droplet digital PCR, targeting the N1 and N2 regions of the SARS-CoV-2 nucleoprotein gene. The association between SARS-CoV-2 RNAemia and viral RNA load in plasma with severity was evaluated by multivariate logistic regression. Correlations between viral RNA load and biomarkers evidencing dysregulation of host response were evaluated by calculating the Spearman correlation coefficients. RESULTS The frequency of viral RNAemia was higher in the critically ill patients (78%) compared to ward patients (27%) and outpatients (2%) (p < 0.001). Critical patients had higher viral RNA loads in plasma than non-critically ill patients, with non-survivors showing the highest values. When outpatients and ward patients were compared, viral RNAemia did not show significant associations in the multivariate analysis. In contrast, when ward patients were compared with ICU patients, both viral RNAemia and viral RNA load in plasma were associated with critical illness (OR [CI 95%], p): RNAemia (3.92 [1.183-12.968], 0.025), viral RNA load (N1) (1.962 [1.244-3.096], 0.004); viral RNA load (N2) (2.229 [1.382-3.595], 0.001). Viral RNA load in plasma correlated with higher levels of chemokines (CXCL10, CCL2), biomarkers indicative of a systemic inflammatory response (IL-6, CRP, ferritin), activation of NK cells (IL-15), endothelial dysfunction (VCAM-1, angiopoietin-2, ICAM-1), coagulation activation (D-Dimer and INR), tissue damage (LDH, GPT), neutrophil response (neutrophils counts, myeloperoxidase, GM-CSF) and immunodepression (PD-L1, IL-10, lymphopenia and monocytopenia). CONCLUSIONS SARS-CoV-2 RNAemia and viral RNA load in plasma are associated with critical illness in COVID-19. Viral RNA load in plasma correlates with key signatures of dysregulated host responses, suggesting a major role of uncontrolled viral replication in the pathogenesis of this disease.
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Affiliation(s)
- Jesús F Bermejo-Martin
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Hospital Universitario Río Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Av. de Monforte de Lemos, 3-5, 28029, Madrid, Spain
| | - Milagros González-Rivera
- Department of Laboratory Medicine, Hospital General Universitario Gregorio Marañón, Calle del Dr. Esquerdo, 46, 28007, Madrid, Spain
- Department of Medicine, Faculty of Medicine, Universidad Complutense de Madrid, Plaza de Ramón y Cajal, s/n, 28040, Madrid, Spain
| | - Raquel Almansa
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Hospital Universitario Río Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Av. de Monforte de Lemos, 3-5, 28029, Madrid, Spain
| | - Dariela Micheloud
- Emergency Department, Hospital General Universitario Gregorio Marañón, Calle del Dr. Esquerdo, 46, 28007, Madrid, Spain
| | - Ana P Tedim
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Hospital Universitario Río Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Marta Domínguez-Gil
- Microbiology Service, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Salvador Resino
- Viral Infection and Immunity Unit, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Ctra. de Pozuelo, 28, 28222, Majadahonda, Spain
| | - Marta Martín-Fernández
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Hospital Universitario Río Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Pablo Ryan Murua
- Hospital Universitario Infanta Leonor, Av. Gran Vía del Este, 80, 28031, Madrid, Spain
| | - Felipe Pérez-García
- Servicio de Microbiología Clínica, Hospital Universitario Príncipe de Asturias, Carr. de Alcalá, s/n, 28805, Madrid, Spain
| | - Luis Tamayo
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Intensive Care Unit, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Raúl Lopez-Izquierdo
- Emergency Department, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Elena Bustamante
- Intensive Care Unit, Hospital Clínico Universitario de Valladolid, Av. Ramón y Cajal, 47003, Valladolid, Spain
| | - César Aldecoa
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Department of Anesthesiology, Facultad de Medicina de Valladolid, Av. Ramón y Cajal, 47005, Valladolid, Spain
- Anesthesiology and Reanimation Service, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - José Manuel Gómez
- Intensive Care Unit, Hospital General Universitario Gregorio Marañón, Calle del Dr. Esquerdo, 46, 28007, Madrid, Spain
| | - Jesús Rico-Feijoo
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Anesthesiology and Reanimation Service, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Antonio Orduña
- Microbiology Service, Hospital Clinico Universitario de Valladolid, Av. Ramón y Cajal, 47003, Valladolid, Spain
| | - Raúl Méndez
- Pulmonology Service, Hospital Universitario y Politécnico de La Fe, Avinguda de Fernando Abril Martorell, 106, 46026, Valencia, Spain
| | - Isabel Fernández Natal
- Clinical Microbiology Department, Complejo Asistencial Universitario de León, Calle Altos de Nava, s/n, 24001, León, Spain
| | - Gregoria Megías
- Microbiology Service, Hospital Universitario de Burgos, Av. Islas Baleares, 3, 09006, Burgos, Spain
| | - Montserrat González-Estecha
- Department of Laboratory Medicine, Hospital General Universitario Gregorio Marañón, Calle del Dr. Esquerdo, 46, 28007, Madrid, Spain
- Department of Medicine, Faculty of Medicine, Universidad Complutense de Madrid, Plaza de Ramón y Cajal, s/n, 28040, Madrid, Spain
| | - Demetrio Carriedo
- Intensive Care Unit, Complejo Asistencial Universitario de León, Calle Altos de nava, s/n, 24001, León, Spain
| | - Cristina Doncel
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Hospital Universitario Río Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Av. de Monforte de Lemos, 3-5, 28029, Madrid, Spain
| | - Noelia Jorge
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Hospital Universitario Río Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Av. de Monforte de Lemos, 3-5, 28029, Madrid, Spain
| | - Alicia Ortega
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Hospital Universitario Río Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Av. de Monforte de Lemos, 3-5, 28029, Madrid, Spain
| | - Amanda de la Fuente
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Hospital Universitario Río Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Av. de Monforte de Lemos, 3-5, 28029, Madrid, Spain
| | - Félix Del Campo
- Pneumology Service, Hospital Universitario Río Hortega/Biomedical Engineering Group, Universidad de Valladolid, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | | | - Wysali Trapiello
- Clinical Analysis Service. Hospital, Clínico Universitario de Valladolid, Av. Ramón y Cajal, 47003, Valladolid, Spain
| | - Paula González-Jiménez
- Pulmonology Service, Hospital Universitario y Politécnico de La Fe, Avinguda de Fernando Abril Martorell, 106, 46026, Valencia, Spain
| | - Guadalupe Ruiz
- Clinical Analysis Service. Hospital, Clínico Universitario de Valladolid, Av. Ramón y Cajal, 47003, Valladolid, Spain
| | - Alyson A Kelvin
- Department of Microbiology and Immunology, Faculty of Medicine, Canadian Center for Vaccinology CCfV, Dalhousie University, Halifax, NS, B3H 4R2, Canada
- Laboratory of Immunity, Shantou University Medical College, 22 Xinling Rd., Jinping, Shantou, Guangdong, China
| | - Ali Toloue Ostadgavahi
- Department of Microbiology and Immunology, Faculty of Medicine, Canadian Center for Vaccinology CCfV, Dalhousie University, Halifax, NS, B3H 4R2, Canada
- Laboratory of Immunity, Shantou University Medical College, 22 Xinling Rd., Jinping, Shantou, Guangdong, China
| | - Ruth Oneizat
- Microbiology Service, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Luz María Ruiz
- Microbiology Service, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Iria Miguéns
- Emergency Department, Hospital General Universitario Gregorio Marañón, Calle del Dr. Esquerdo, 46, 28007, Madrid, Spain
| | - Esther Gargallo
- Emergency Department, Hospital General Universitario Gregorio Marañón, Calle del Dr. Esquerdo, 46, 28007, Madrid, Spain
| | - Ioana Muñoz
- Emergency Department, Hospital General Universitario Gregorio Marañón, Calle del Dr. Esquerdo, 46, 28007, Madrid, Spain
| | - Sara Pelegrin
- Anesthesiology and Reanimation Service, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Silvia Martín
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Anesthesiology and Reanimation Service, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Pablo García Olivares
- Intensive Care Unit, Hospital General Universitario Gregorio Marañón, Calle del Dr. Esquerdo, 46, 28007, Madrid, Spain
| | - Jamil Antonio Cedeño
- Intensive Care Unit, Hospital General Universitario Gregorio Marañón, Calle del Dr. Esquerdo, 46, 28007, Madrid, Spain
| | - Tomás Ruiz Albi
- Pneumology Service, Hospital Universitario Río Hortega/Biomedical Engineering Group, Universidad de Valladolid, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Carolina Puertas
- Department of Laboratory Medicine, Hospital General Universitario Gregorio Marañón, Calle del Dr. Esquerdo, 46, 28007, Madrid, Spain
| | - Jose Ángel Berezo
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Intensive Care Unit, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Gloria Renedo
- Intensive Care Unit, Hospital Clínico Universitario de Valladolid, Av. Ramón y Cajal, 47003, Valladolid, Spain
| | - Rubén Herrán
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Intensive Care Unit, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Juan Bustamante-Munguira
- Department of Cardiovascular Surgery, Hospital Clínico Universitario de Valladolid, Av. Ramón y Cajal, 47003, Valladolid, Spain
| | - Pedro Enríquez
- Intensive Care Unit, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Ramón Cicuendez
- Intensive Care Unit, Hospital Clínico Universitario de Valladolid, Av. Ramón y Cajal, 47003, Valladolid, Spain
| | - Jesús Blanco
- Intensive Care Unit, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Jesica Abadia
- Infectious Diseases Clinic, Internal Medicine Department, Hospital Universitario Río Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Julia Gómez Barquero
- Infectious Diseases Clinic, Internal Medicine Department, Hospital Universitario Río Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Nuria Mamolar
- Intensive Care Unit, Hospital Clínico Universitario de Valladolid, Av. Ramón y Cajal, 47003, Valladolid, Spain
| | - Natalia Blanca-López
- Hospital Universitario Infanta Leonor, Av. Gran Vía del Este, 80, 28031, Madrid, Spain
| | - Luis Jorge Valdivia
- Intensive Care Unit, Complejo Asistencial Universitario de León, Calle Altos de nava, s/n, 24001, León, Spain
| | - Belén Fernández Caso
- Clinical Microbiology Department, Complejo Asistencial Universitario de León, Calle Altos de Nava, s/n, 24001, León, Spain
| | - María Ángeles Mantecón
- Microbiology Service, Hospital Universitario de Burgos, Av. Islas Baleares, 3, 09006, Burgos, Spain
| | - Anna Motos
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Av. de Monforte de Lemos, 3-5, 28029, Madrid, Spain
- Department of Pulmonology, Hospital Clinic de Barcelona, Institut D Investigacions August Pi I Sunyer (IDIBAPS), Universidad de Barcelona, Carrer del Rosselló, 149, 08036, Barcelona, Spain
| | - Laia Fernandez-Barat
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Av. de Monforte de Lemos, 3-5, 28029, Madrid, Spain
- Department of Pulmonology, Hospital Clinic de Barcelona, Institut D Investigacions August Pi I Sunyer (IDIBAPS), Universidad de Barcelona, Carrer del Rosselló, 149, 08036, Barcelona, Spain
| | - Ricard Ferrer
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Av. de Monforte de Lemos, 3-5, 28029, Madrid, Spain
- Intensive Care Department, Vall d'Hebron Hospital Universitari, SODIR Research Group, Vall d'Hebron Institut de Recerca, Passeig de la Vall d'Hebron, 119, 08035, Barcelona, Spain
| | - Ferrán Barbé
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Av. de Monforte de Lemos, 3-5, 28029, Madrid, Spain
- Respiratory Department, Institut Ricerca Biomedica de Lleida, Av. Alcalde Rovira Roure, 80, 25198, Lleida, Spain
| | - Antoni Torres
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Av. de Monforte de Lemos, 3-5, 28029, Madrid, Spain
- Department of Pulmonology, Hospital Clinic de Barcelona, Institut D Investigacions August Pi I Sunyer (IDIBAPS), Universidad de Barcelona, Carrer del Rosselló, 149, 08036, Barcelona, Spain
| | - Rosario Menéndez
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Av. de Monforte de Lemos, 3-5, 28029, Madrid, Spain
- Pulmonology Service, Hospital Universitario y Politécnico de La Fe, Avinguda de Fernando Abril Martorell, 106, 46026, Valencia, Spain
| | - José María Eiros
- Microbiology Service, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - David J Kelvin
- Department of Microbiology and Immunology, Faculty of Medicine, Canadian Center for Vaccinology CCfV, Dalhousie University, Halifax, NS, B3H 4R2, Canada.
- Laboratory of Immunity, Shantou University Medical College, 22 Xinling Rd., Jinping, Shantou, Guangdong, China.
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Bermejo-Martin JF, González-Rivera M, Almansa R, Micheloud D, Tedim AP, Domínguez-Gil M, Resino S, Martín-Fernández M, Ryan Murua P, Pérez-García F, Tamayo L, Lopez-Izquierdo R, Bustamante E, Aldecoa C, Gómez JM, Rico-Feijoo J, Orduña A, Méndez R, Fernández Natal I, Megías G, González-Estecha M, Carriedo D, Doncel C, Jorge N, Ortega A, de la Fuente A, Del Campo F, Fernández-Ratero JA, Trapiello W, González-Jiménez P, Ruiz G, Kelvin AA, Ostadgavahi AT, Oneizat R, Ruiz LM, Miguéns I, Gargallo E, Muñoz I, Pelegrin S, Martín S, García Olivares P, Cedeño JA, Ruiz Albi T, Puertas C, Berezo JÁ, Renedo G, Herrán R, Bustamante-Munguira J, Enríquez P, Cicuendez R, Blanco J, Abadia J, Gómez Barquero J, Mamolar N, Blanca-López N, Valdivia LJ, Fernández Caso B, Mantecón MÁ, Motos A, Fernandez-Barat L, Ferrer R, Barbé F, Torres A, Menéndez R, Eiros JM, Kelvin DJ. Viral RNA load in plasma is associated with critical illness and a dysregulated host response in COVID-19. Crit Care 2020; 24:691. [PMID: 33317616 DOI: 10.1186/s13054‐020‐03398‐0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 11/18/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND COVID-19 can course with respiratory and extrapulmonary disease. SARS-CoV-2 RNA is detected in respiratory samples but also in blood, stool and urine. Severe COVID-19 is characterized by a dysregulated host response to this virus. We studied whether viral RNAemia or viral RNA load in plasma is associated with severe COVID-19 and also to this dysregulated response. METHODS A total of 250 patients with COVID-19 were recruited (50 outpatients, 100 hospitalized ward patients and 100 critically ill). Viral RNA detection and quantification in plasma was performed using droplet digital PCR, targeting the N1 and N2 regions of the SARS-CoV-2 nucleoprotein gene. The association between SARS-CoV-2 RNAemia and viral RNA load in plasma with severity was evaluated by multivariate logistic regression. Correlations between viral RNA load and biomarkers evidencing dysregulation of host response were evaluated by calculating the Spearman correlation coefficients. RESULTS The frequency of viral RNAemia was higher in the critically ill patients (78%) compared to ward patients (27%) and outpatients (2%) (p < 0.001). Critical patients had higher viral RNA loads in plasma than non-critically ill patients, with non-survivors showing the highest values. When outpatients and ward patients were compared, viral RNAemia did not show significant associations in the multivariate analysis. In contrast, when ward patients were compared with ICU patients, both viral RNAemia and viral RNA load in plasma were associated with critical illness (OR [CI 95%], p): RNAemia (3.92 [1.183-12.968], 0.025), viral RNA load (N1) (1.962 [1.244-3.096], 0.004); viral RNA load (N2) (2.229 [1.382-3.595], 0.001). Viral RNA load in plasma correlated with higher levels of chemokines (CXCL10, CCL2), biomarkers indicative of a systemic inflammatory response (IL-6, CRP, ferritin), activation of NK cells (IL-15), endothelial dysfunction (VCAM-1, angiopoietin-2, ICAM-1), coagulation activation (D-Dimer and INR), tissue damage (LDH, GPT), neutrophil response (neutrophils counts, myeloperoxidase, GM-CSF) and immunodepression (PD-L1, IL-10, lymphopenia and monocytopenia). CONCLUSIONS SARS-CoV-2 RNAemia and viral RNA load in plasma are associated with critical illness in COVID-19. Viral RNA load in plasma correlates with key signatures of dysregulated host responses, suggesting a major role of uncontrolled viral replication in the pathogenesis of this disease.
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Affiliation(s)
- Jesús F Bermejo-Martin
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Hospital Universitario Río Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Av. de Monforte de Lemos, 3-5, 28029, Madrid, Spain
| | - Milagros González-Rivera
- Department of Laboratory Medicine, Hospital General Universitario Gregorio Marañón, Calle del Dr. Esquerdo, 46, 28007, Madrid, Spain
- Department of Medicine, Faculty of Medicine, Universidad Complutense de Madrid, Plaza de Ramón y Cajal, s/n, 28040, Madrid, Spain
| | - Raquel Almansa
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Hospital Universitario Río Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Av. de Monforte de Lemos, 3-5, 28029, Madrid, Spain
| | - Dariela Micheloud
- Emergency Department, Hospital General Universitario Gregorio Marañón, Calle del Dr. Esquerdo, 46, 28007, Madrid, Spain
| | - Ana P Tedim
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Hospital Universitario Río Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Marta Domínguez-Gil
- Microbiology Service, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Salvador Resino
- Viral Infection and Immunity Unit, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Ctra. de Pozuelo, 28, 28222, Majadahonda, Spain
| | - Marta Martín-Fernández
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Hospital Universitario Río Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Pablo Ryan Murua
- Hospital Universitario Infanta Leonor, Av. Gran Vía del Este, 80, 28031, Madrid, Spain
| | - Felipe Pérez-García
- Servicio de Microbiología Clínica, Hospital Universitario Príncipe de Asturias, Carr. de Alcalá, s/n, 28805, Madrid, Spain
| | - Luis Tamayo
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Intensive Care Unit, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Raúl Lopez-Izquierdo
- Emergency Department, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Elena Bustamante
- Intensive Care Unit, Hospital Clínico Universitario de Valladolid, Av. Ramón y Cajal, 47003, Valladolid, Spain
| | - César Aldecoa
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Department of Anesthesiology, Facultad de Medicina de Valladolid, Av. Ramón y Cajal, 47005, Valladolid, Spain
- Anesthesiology and Reanimation Service, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - José Manuel Gómez
- Intensive Care Unit, Hospital General Universitario Gregorio Marañón, Calle del Dr. Esquerdo, 46, 28007, Madrid, Spain
| | - Jesús Rico-Feijoo
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Anesthesiology and Reanimation Service, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Antonio Orduña
- Microbiology Service, Hospital Clinico Universitario de Valladolid, Av. Ramón y Cajal, 47003, Valladolid, Spain
| | - Raúl Méndez
- Pulmonology Service, Hospital Universitario y Politécnico de La Fe, Avinguda de Fernando Abril Martorell, 106, 46026, Valencia, Spain
| | - Isabel Fernández Natal
- Clinical Microbiology Department, Complejo Asistencial Universitario de León, Calle Altos de Nava, s/n, 24001, León, Spain
| | - Gregoria Megías
- Microbiology Service, Hospital Universitario de Burgos, Av. Islas Baleares, 3, 09006, Burgos, Spain
| | - Montserrat González-Estecha
- Department of Laboratory Medicine, Hospital General Universitario Gregorio Marañón, Calle del Dr. Esquerdo, 46, 28007, Madrid, Spain
- Department of Medicine, Faculty of Medicine, Universidad Complutense de Madrid, Plaza de Ramón y Cajal, s/n, 28040, Madrid, Spain
| | - Demetrio Carriedo
- Intensive Care Unit, Complejo Asistencial Universitario de León, Calle Altos de nava, s/n, 24001, León, Spain
| | - Cristina Doncel
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Hospital Universitario Río Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Av. de Monforte de Lemos, 3-5, 28029, Madrid, Spain
| | - Noelia Jorge
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Hospital Universitario Río Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Av. de Monforte de Lemos, 3-5, 28029, Madrid, Spain
| | - Alicia Ortega
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Hospital Universitario Río Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Av. de Monforte de Lemos, 3-5, 28029, Madrid, Spain
| | - Amanda de la Fuente
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Hospital Universitario Río Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Av. de Monforte de Lemos, 3-5, 28029, Madrid, Spain
| | - Félix Del Campo
- Pneumology Service, Hospital Universitario Río Hortega/Biomedical Engineering Group, Universidad de Valladolid, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | | | - Wysali Trapiello
- Clinical Analysis Service. Hospital, Clínico Universitario de Valladolid, Av. Ramón y Cajal, 47003, Valladolid, Spain
| | - Paula González-Jiménez
- Pulmonology Service, Hospital Universitario y Politécnico de La Fe, Avinguda de Fernando Abril Martorell, 106, 46026, Valencia, Spain
| | - Guadalupe Ruiz
- Clinical Analysis Service. Hospital, Clínico Universitario de Valladolid, Av. Ramón y Cajal, 47003, Valladolid, Spain
| | - Alyson A Kelvin
- Department of Microbiology and Immunology, Faculty of Medicine, Canadian Center for Vaccinology CCfV, Dalhousie University, Halifax, NS, B3H 4R2, Canada
- Laboratory of Immunity, Shantou University Medical College, 22 Xinling Rd., Jinping, Shantou, Guangdong, China
| | - Ali Toloue Ostadgavahi
- Department of Microbiology and Immunology, Faculty of Medicine, Canadian Center for Vaccinology CCfV, Dalhousie University, Halifax, NS, B3H 4R2, Canada
- Laboratory of Immunity, Shantou University Medical College, 22 Xinling Rd., Jinping, Shantou, Guangdong, China
| | - Ruth Oneizat
- Microbiology Service, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Luz María Ruiz
- Microbiology Service, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Iria Miguéns
- Emergency Department, Hospital General Universitario Gregorio Marañón, Calle del Dr. Esquerdo, 46, 28007, Madrid, Spain
| | - Esther Gargallo
- Emergency Department, Hospital General Universitario Gregorio Marañón, Calle del Dr. Esquerdo, 46, 28007, Madrid, Spain
| | - Ioana Muñoz
- Emergency Department, Hospital General Universitario Gregorio Marañón, Calle del Dr. Esquerdo, 46, 28007, Madrid, Spain
| | - Sara Pelegrin
- Anesthesiology and Reanimation Service, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Silvia Martín
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Anesthesiology and Reanimation Service, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Pablo García Olivares
- Intensive Care Unit, Hospital General Universitario Gregorio Marañón, Calle del Dr. Esquerdo, 46, 28007, Madrid, Spain
| | - Jamil Antonio Cedeño
- Intensive Care Unit, Hospital General Universitario Gregorio Marañón, Calle del Dr. Esquerdo, 46, 28007, Madrid, Spain
| | - Tomás Ruiz Albi
- Pneumology Service, Hospital Universitario Río Hortega/Biomedical Engineering Group, Universidad de Valladolid, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Carolina Puertas
- Department of Laboratory Medicine, Hospital General Universitario Gregorio Marañón, Calle del Dr. Esquerdo, 46, 28007, Madrid, Spain
| | - Jose Ángel Berezo
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Intensive Care Unit, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Gloria Renedo
- Intensive Care Unit, Hospital Clínico Universitario de Valladolid, Av. Ramón y Cajal, 47003, Valladolid, Spain
| | - Rubén Herrán
- Group for Biomedical Research in Sepsis (BioSepsis), Instituto de Investigación Biomédica de Salamanca, (IBSAL), Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Intensive Care Unit, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Juan Bustamante-Munguira
- Department of Cardiovascular Surgery, Hospital Clínico Universitario de Valladolid, Av. Ramón y Cajal, 47003, Valladolid, Spain
| | - Pedro Enríquez
- Intensive Care Unit, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Ramón Cicuendez
- Intensive Care Unit, Hospital Clínico Universitario de Valladolid, Av. Ramón y Cajal, 47003, Valladolid, Spain
| | - Jesús Blanco
- Intensive Care Unit, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Jesica Abadia
- Infectious Diseases Clinic, Internal Medicine Department, Hospital Universitario Río Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Julia Gómez Barquero
- Infectious Diseases Clinic, Internal Medicine Department, Hospital Universitario Río Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - Nuria Mamolar
- Intensive Care Unit, Hospital Clínico Universitario de Valladolid, Av. Ramón y Cajal, 47003, Valladolid, Spain
| | - Natalia Blanca-López
- Hospital Universitario Infanta Leonor, Av. Gran Vía del Este, 80, 28031, Madrid, Spain
| | - Luis Jorge Valdivia
- Intensive Care Unit, Complejo Asistencial Universitario de León, Calle Altos de nava, s/n, 24001, León, Spain
| | - Belén Fernández Caso
- Clinical Microbiology Department, Complejo Asistencial Universitario de León, Calle Altos de Nava, s/n, 24001, León, Spain
| | - María Ángeles Mantecón
- Microbiology Service, Hospital Universitario de Burgos, Av. Islas Baleares, 3, 09006, Burgos, Spain
| | - Anna Motos
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Av. de Monforte de Lemos, 3-5, 28029, Madrid, Spain
- Department of Pulmonology, Hospital Clinic de Barcelona, Institut D Investigacions August Pi I Sunyer (IDIBAPS), Universidad de Barcelona, Carrer del Rosselló, 149, 08036, Barcelona, Spain
| | - Laia Fernandez-Barat
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Av. de Monforte de Lemos, 3-5, 28029, Madrid, Spain
- Department of Pulmonology, Hospital Clinic de Barcelona, Institut D Investigacions August Pi I Sunyer (IDIBAPS), Universidad de Barcelona, Carrer del Rosselló, 149, 08036, Barcelona, Spain
| | - Ricard Ferrer
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Av. de Monforte de Lemos, 3-5, 28029, Madrid, Spain
- Intensive Care Department, Vall d'Hebron Hospital Universitari, SODIR Research Group, Vall d'Hebron Institut de Recerca, Passeig de la Vall d'Hebron, 119, 08035, Barcelona, Spain
| | - Ferrán Barbé
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Av. de Monforte de Lemos, 3-5, 28029, Madrid, Spain
- Respiratory Department, Institut Ricerca Biomedica de Lleida, Av. Alcalde Rovira Roure, 80, 25198, Lleida, Spain
| | - Antoni Torres
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Av. de Monforte de Lemos, 3-5, 28029, Madrid, Spain
- Department of Pulmonology, Hospital Clinic de Barcelona, Institut D Investigacions August Pi I Sunyer (IDIBAPS), Universidad de Barcelona, Carrer del Rosselló, 149, 08036, Barcelona, Spain
| | - Rosario Menéndez
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Av. de Monforte de Lemos, 3-5, 28029, Madrid, Spain
- Pulmonology Service, Hospital Universitario y Politécnico de La Fe, Avinguda de Fernando Abril Martorell, 106, 46026, Valencia, Spain
| | - José María Eiros
- Microbiology Service, Hospital Universitario Rio Hortega, Calle Dulzaina, 2, 47012, Valladolid, Spain
| | - David J Kelvin
- Department of Microbiology and Immunology, Faculty of Medicine, Canadian Center for Vaccinology CCfV, Dalhousie University, Halifax, NS, B3H 4R2, Canada.
- Laboratory of Immunity, Shantou University Medical College, 22 Xinling Rd., Jinping, Shantou, Guangdong, China.
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Aguilera A, Trastoy R, Rodríguez-Frias F, Muñoz-Bellido JL, Melón S, Suárez A, Orduña A, Viciana I, Bernal S, García-Bujalance S, Montiel N, Molina JM, Basaras M, Fernández-Cuenca F, García-Arata I, Reina G, Ocete MD, Fuentes A, Navarro-de la Cruz D, Nieto L, Blazquez de Castro A, Buti M, Álvarez M, García F. GEHEP 010 study: Prevalence and distribution of hepatitis B virus genotypes in Spain (2000-2016). J Infect 2020; 81:600-606. [PMID: 32711039 DOI: 10.1016/j.jinf.2020.07.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 06/29/2020] [Accepted: 07/17/2020] [Indexed: 02/06/2023]
Abstract
OBJECTIVE To study the prevalence and distribution of HBV genotypes in Spain for the period 2000-2016. METHODS Retrospective study recruiting 2559 patients from 17 hospitals. Distribution of HBV genotypes, as well as sex, age, geographical origin, mode of transmission, HDV-, HIV- and/or HCV-coinfection, and treatment were recorded. RESULTS 1924 chronically HBV native Spanish patients have been recruited. Median age was 54 years (IQR: 41-62), 69.6% male, 6.3% HIV-coinfected, 3.1% were HCV-coinfected, 1.7% HDV-co/superinfected. Genotype distribution was: 55.9% D, 33.5% A, 5.6% F, 0.8% G, and 1.9% other genotypes (E, B, H and C). HBV genotype A was closely associated with male sex, sexual transmission, and HIV-coinfection. In contrast, HBV genotype D was associated with female sex and vertical transmission. Different patterns of genotype distribution and diversity were found between different geographical regions. In addition, HBV epidemiological patterns are evolving in Spain, mainly because of immigration. Finally, similar overall rates of treatment success across all HBV genotypes were found. CONCLUSIONS We present here the most recent data on molecular epidemiology of HBV in Spain (GEHEP010 Study). This study confirms that the HBV genotype distribution in Spain varies based on age, sex, origin, HIV-coinfection, geographical regions and epidemiological groups.
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Affiliation(s)
- Antonio Aguilera
- Complexo Hospitalario Universitario de Santiago, Santiago de Compostela, Instituto de Investigación Sanitaria de Santiago IDIS, Spain
| | - Rocío Trastoy
- Hospital Universitario Vall d'Hebrón, Barcelona, Spain
| | | | | | - Santiago Melón
- Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Avelina Suárez
- Hospital Clínico Universitario San Carlos, Madrid, Spain
| | - Antonio Orduña
- Hospital Clínico Universitario de Valladolid, Valladolid, Spain
| | - Isabel Viciana
- Hospital Universitario Virgen de la Victoria, Málaga, Spain
| | - Samuel Bernal
- Hospital Universitario Virgen de Valme, Sevilla, Spain
| | | | | | | | | | | | | | | | | | - Ana Fuentes
- Hospital Universitario San Cecilio, Instituto de Investigación Biosanitaria Ibs, Av. de la Innovación S/N, 18016 Granada, Spain
| | | | | | | | - María Buti
- Hospital Universitario Vall d'Hebrón, Barcelona, Spain
| | - Marta Álvarez
- Hospital Universitario San Cecilio, Instituto de Investigación Biosanitaria Ibs, Av. de la Innovación S/N, 18016 Granada, Spain
| | - Federico García
- Hospital Universitario San Cecilio, Instituto de Investigación Biosanitaria Ibs, Av. de la Innovación S/N, 18016 Granada, Spain.
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López-Ramos I, Hernández M, Rodríguez-Lázaro D, Gutiérrez MP, Zarzosa P, Orduña A, March GA. Quick identification and epidemiological characterization of Francisella tularensis by MALDI-TOF mass spectrometry. J Microbiol Methods 2020; 177:106055. [PMID: 32918935 DOI: 10.1016/j.mimet.2020.106055] [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: 07/01/2020] [Revised: 09/07/2020] [Accepted: 09/07/2020] [Indexed: 11/17/2022]
Abstract
INTRODUCTION Currently, Matrix-Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry (MALDI-TOF MS) is being evaluated for its efficacy as a fast bacterial typing tool due to its great speed compared to other molecular methods. In this study, we evaluated MALDI-TOF as a tool for quick identification and typing of Francisella tularensis. MATERIALS AND METHODS This study encompassed 86 strains from two different geographical origins (Spain and the Czech Republic), which were previously characterised by Pulsed-Field Gel Electrophoresis (PFGE) and Multiple-Locus Variable Number Tandem Repeat Analysis (MLVA). The direct colony method was used for microbial identification. High-quality spectra of the 86 strains were obtained and their main spectra profiles (MSPs) were created for epidemiological typing using MALDI-TOF. Based on the MSPs, principal components were generated and a dendrogram was constructed. An in-house MALDI-TOF library entry was created for each group of PFGE and MLVA strains based on their high-quality spectra. Two dendrograms were obtained using these entries and the unique peaks in each entry were searched. RESULTS All strains were correctly identified to the species level. No clear divisions were found in the 86-strain dendrogram; however, Spanish and Czech strains appeared separately in dendrograms created using MLVA and PFGE entries. Entries from our in-house MALDI-TOF library revealed 2-4 biomarker peaks for the detection of the five PFGE groups and 1-12 biomarker peaks for the detection of the seven MLVA groups. Finally, two and one specific biomarkers were found in the Czech and Spanish strains, respectively. CONCLUSION MALDI-TOF can be used to accurately identify F. tularensis strains in less than 15 min. Moreover, data on geographical origin and PFGE and MLVA groups could be obtained in less than one hour after colony growing.
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Affiliation(s)
- Irene López-Ramos
- Servicio de Análisis Clínicos, Departamento de Microbiología, Complejo Asistencial Universitario de Palencia, Avenida Donantes de Sangre s/n, 34005 Palencia, Spain.
| | - Marta Hernández
- Laboratorio de Biología Molecular y Microbiología, Instituto Tecnológico Agrario de Castilla y León, 47071 Valladolid, Spain; Área de Microbiología, Facultad de Ciencias, Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain
| | - David Rodríguez-Lázaro
- Laboratorio de Biología Molecular y Microbiología, Instituto Tecnológico Agrario de Castilla y León, 47071 Valladolid, Spain; Área de Microbiología, Facultad de Ciencias, Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain
| | - María P Gutiérrez
- Área de Microbiología, Facultad de Medicina, Av. Ramón y Cajal, s/n, 47003 Valladolid, Spain
| | - Pilar Zarzosa
- Área de Microbiología, Facultad de Medicina, Av. Ramón y Cajal, s/n, 47003 Valladolid, Spain
| | - Antonio Orduña
- Área de Microbiología, Facultad de Medicina, Av. Ramón y Cajal, s/n, 47003 Valladolid, Spain; Servicio de Microbiología e Inmunología, Hospital Clínico Universitario de Valladolid, Av. Ramón y Cajal, 3, 47003 Valladolid, Spain
| | - Gabriel A March
- Servicio de Microbiología e Inmunología, Hospital Clínico Universitario de Valladolid, Av. Ramón y Cajal, 3, 47003 Valladolid, Spain
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Jurado A, Martín MC, Abad-Molina C, Orduña A, Martínez A, Ocaña E, Yarce O, Navas AM, Trujillo A, Fernández L, Vergara E, Rodríguez B, Quirant B, Martínez-Cáceres E, Hernández M, Perurena-Prieto J, Gil J, Cantenys S, González-Martínez G, Martínez-Saavedra MT, Rojo R, Marco FM, Mora S, Ontañón J, López-Hoyos M, Ocejo-Vinyals G, Melero J, Aguilar M, Almeida D, Medina S, Vegas MC, Jiménez Y, Prada Á, Monzón D, Boix F, Cunill V, Molina J. COVID-19: age, Interleukin-6, C-reactive protein, and lymphocytes as key clues from a multicentre retrospective study. Immun Ageing 2020; 17:22. [PMID: 32802142 PMCID: PMC7426672 DOI: 10.1186/s12979-020-00194-w] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 07/26/2020] [Indexed: 02/06/2023]
Abstract
Background The SARS-CoV-2 infection has widely spread to become the greatest public health challenge to date, the COVID-19 pandemic. Different fatality rates among countries are probably due to non-standardized records being carried out by local health authorities. The Spanish case-fatality rate is 11.22%, far higher than those reported in Asia or by other European countries. A multicentre retrospective study of demographic, clinical, laboratory and immunological features of 584 Spanish COVID-19 hospitalized patients and their outcomes was performed. The use of renin-angiotensin system blockers was also analysed as a risk factor. Results In this study, 27.4% of cases presented a mild course, 42.1% a moderate one and for 30.5% of cases, the course was severe. Ages ranged from 18 to 98 (average 63). Almost 60 % (59.8%) of patients were male. Interleukin 6 was higher as severity increased. On the other hand, CD8 lymphocyte count was significantly lower as severity grew and subpopulations CD4, CD8, CD19, and NK showed concordant lowering trends. Severity-related natural killer percent descents were evidenced just within aged cases. A significant severity-related decrease of CD4 lymphocytes was found in males. The use of angiotensin-converting enzyme inhibitors was associated with a better prognosis. The angiotensin II receptor blocker use was associated with a more severe course. Conclusions Age and age-related comorbidities, such as dyslipidaemia, hypertension or diabetes, determined more frequent severe forms of the disease in this study than in previous literature cohorts. Our cases are older than those so far reported and the clinical course of the disease is found to be impaired by age. Immunosenescence might be therefore a suitable explanation for the hampering of immune system effectors. The adaptive immunity would become exhausted and a strong but ineffective and almost deleterious innate response would account for COVID-19 severity. Angiotensin-converting enzyme inhibitors used by hypertensive patients have a protective effect in regards to COVID-19 severity in our series. Conversely, patients on angiotensin II receptor blockers showed a severer disease.
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Affiliation(s)
- Aurora Jurado
- Department of Immunology and Allergology, Hospital Universitario Reina Sofía-Instituto de Investigación Biomédica de Córdoba (IMIBIC), Córdoba, Spain
| | - María C Martín
- Centro de Hemoterapia y Hemodonación de Castilla y León, Paseo de Filipinos s/n, 47007 Valladolid, Spain
| | - Cristina Abad-Molina
- Department of Microbiology and Immunology, Hospital Clínico Universitario, Valladolid, Spain
| | - Antonio Orduña
- Department of Microbiology and Immunology, Hospital Clínico Universitario, Valladolid, Spain
| | | | - Esther Ocaña
- Laboratory Unit. Complejo Hospitalario, Jaén, Spain
| | - Oscar Yarce
- Department of Immunology and Allergology, Hospital Universitario Reina Sofía-Instituto de Investigación Biomédica de Córdoba (IMIBIC), Córdoba, Spain
| | - Ana M Navas
- Department of Immunology and Allergology, Hospital Universitario Reina Sofía-Instituto de Investigación Biomédica de Córdoba (IMIBIC), Córdoba, Spain
| | - Antonio Trujillo
- Department of Immunology and Allergology, Hospital Universitario Reina Sofía-Instituto de Investigación Biomédica de Córdoba (IMIBIC), Córdoba, Spain
| | - Luis Fernández
- Laboratoy of Immunology and Genetics. Hospital San Pedro de Alcántara, Cáceres, Spain
| | - Esther Vergara
- Laboratoy of Immunology and Genetics. Hospital San Pedro de Alcántara, Cáceres, Spain
| | | | - Bibiana Quirant
- Department of Immunology, Hospital Germans Trias i Pujols, Barcelona, Spain
| | | | - Manuel Hernández
- Department of Immunology, Hospital Universitario Vall d'Hebron, Barcelona, Spain
| | | | - Juana Gil
- Department of Immunology, Hospital General Universitario e Instituto de Investigación Sanitaria "Gregorio Marañón", Madrid, Spain
| | - Sergi Cantenys
- Department of Immunology, Hospital General Universitario e Instituto de Investigación Sanitaria "Gregorio Marañón", Madrid, Spain
| | - Gema González-Martínez
- Unit of Immunology, Hospital Universitario Insular-Materno Infantil, Las Palmas de Gran Canaria, Spain
| | - María T Martínez-Saavedra
- Unit of Immunology, Hospital Universitario Insular-Materno Infantil, Las Palmas de Gran Canaria, Spain
| | - Ricardo Rojo
- Department of Immunology, Complejo Hospitalario, La Coruña, Spain
| | | | - Sergio Mora
- Laboratory Unit. Hospital General, Alicante, Spain
| | - Jesús Ontañón
- Laboratory Unit. Hospital General Universitario, Albacete, Spain
| | - Marcos López-Hoyos
- Department of Immunology, Hospital Universitario Marqués de Valdecilla, Santander, Spain
| | - Gonzalo Ocejo-Vinyals
- Department of Immunology, Hospital Universitario Marqués de Valdecilla, Santander, Spain
| | - Josefa Melero
- Department of Immunology, Hospital Infanta Cristina, Badajoz, Spain
| | - Marta Aguilar
- Department of Immunology, Hospital Infanta Cristina, Badajoz, Spain
| | - Delia Almeida
- Laboratory Unit. Complejo Hospitalario Nuestra Señora de la Candelaria, Santa Cruz de Tenerife, Spain
| | - Silvia Medina
- Laboratory Unit. Complejo Hospitalario Nuestra Señora de la Candelaria, Santa Cruz de Tenerife, Spain
| | - María C Vegas
- Department of Immunology, Fundación Jiménez Díaz, Madrid, Spain
| | - Yesenia Jiménez
- Department of Immunology, Fundación Jiménez Díaz, Madrid, Spain
| | - Álvaro Prada
- Department of Immunology, Hospital de Donostia, San Sebastián, Spain
| | - David Monzón
- Department of Immunology, Hospital de Donostia, San Sebastián, Spain
| | - Francisco Boix
- Department of Immunology, Hospital Clínico Universitario, Salamanca, Spain
| | - Vanesa Cunill
- Department of Immunology, Hospital Universitario Son Espases, Palma de Mallorca, Spain
| | - Juan Molina
- Department of Immunology and Allergology, Hospital Universitario Reina Sofía-Instituto de Investigación Biomédica de Córdoba (IMIBIC), Córdoba, Spain
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March GA, Gutiérrez MP, López I, Muñoz MF, Ortiz de Lejarazu R, Simarro M, Orduña A, Bratos MÁ. Epidemiological surveillance and wild-type MIC distribution of Legionella pneumophila in north-western Spain. 2003–2016. Enferm Infecc Microbiol Clin 2019; 37:514-520. [DOI: 10.1016/j.eimc.2018.11.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 11/20/2018] [Accepted: 11/21/2018] [Indexed: 10/27/2022]
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14
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Montoro J, Miquel FJ, Quecedo E, Martínez M, Orduña A, Gimeno E, Valverde A. Autoimmune Progesterone Dermatitis: A Complex Case. J Investig Allergol Clin Immunol 2018; 28:348-350. [DOI: 10.18176/jiaci.0284] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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15
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García Del Río A, Delmiro A, Martín MA, Cantalapiedra R, Carretero R, Durántez C, Menegotto F, Morán M, Serrano-Lorenzo P, De la Fuente MA, Orduña A, Simarro M. The Mitochondrial Isoform of FASTK Modulates Nonopsonic Phagocytosis of Bacteria by Macrophages via Regulation of Respiratory Complex I. J Immunol 2018; 201:2977-2985. [PMID: 30322967 DOI: 10.4049/jimmunol.1701075] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 09/10/2018] [Indexed: 12/18/2022]
Abstract
Phagocytosis is a pivotal process by which innate immune cells eliminate bacteria. In this study, we explore novel regulatory mechanisms of phagocytosis driven by the mitochondria. Fas-activated serine/threonine kinase (FASTK) is an RNA-binding protein with two isoforms, one localized to the mitochondria (mitoFASTK) and the other isoform to cytosol and nucleus. The mitoFASTK isoform has been reported to be necessary for the biogenesis of the mitochondrial ND6 mRNA, which encodes an essential subunit of mitochondrial respiratory complex I (CI, NADH:ubiquinone oxidoreductase). This study investigates the role and the mechanisms of action of FASTK in phagocytosis. Macrophages from FASTK─/─ mice exhibited a marked increase in nonopsonic phagocytosis of bacteria. As expected, CI activity was specifically reduced by almost 50% in those cells. To explore if decreased CI activity could underlie the phagocytic phenotype, we tested the effect of CI inhibition on phagocytosis. Indeed, treatment with CI inhibitor rotenone or short hairpin RNAs against two CI subunits (NDUFS3 and NDUFS4) resulted in a marked increase in nonopsonic phagocytosis of bacteria. Importantly, re-expression of mitoFASTK in FASTK-depleted macrophages was sufficient to rescue the phagocytic phenotype. In addition, we also report that the decrease in CI activity in FASTK─/─ macrophages is associated with an increase in phosphorylation of the energy sensor AMP-activated protein kinase (AMPK) and that its inhibition using Compound C reverted the phagocytosis phenotype. Taken together, our results clearly demonstrate for the first time, to our knowledge, that mitoFASTK plays a negative regulatory role on nonopsonic phagocytosis of bacteria in macrophages through its action on CI activity.
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Affiliation(s)
| | - Aitor Delmiro
- Laboratorio de Enfermedades Mitocondriales y Neuromusculares, Instituto de Investigación del Hospital 12 de Octubre, 28041 Madrid, Spain.,Spanish Network for Biomedical Research in Rare Diseases, U723, 28029 Madrid, Spain
| | - Miguel Angel Martín
- Laboratorio de Enfermedades Mitocondriales y Neuromusculares, Instituto de Investigación del Hospital 12 de Octubre, 28041 Madrid, Spain.,Spanish Network for Biomedical Research in Rare Diseases, U723, 28029 Madrid, Spain
| | | | - Raquel Carretero
- Department of Microbiology, University of Valladolid, Valladolid, Spain
| | - Carlos Durántez
- Department of Microbiology, University of Valladolid, Valladolid, Spain
| | - Fabiola Menegotto
- Department of Microbiology, University of Valladolid, Valladolid, Spain
| | - María Morán
- Laboratorio de Enfermedades Mitocondriales y Neuromusculares, Instituto de Investigación del Hospital 12 de Octubre, 28041 Madrid, Spain.,Spanish Network for Biomedical Research in Rare Diseases, U723, 28029 Madrid, Spain
| | - Pablo Serrano-Lorenzo
- Laboratorio de Enfermedades Mitocondriales y Neuromusculares, Instituto de Investigación del Hospital 12 de Octubre, 28041 Madrid, Spain
| | - Miguel Angel De la Fuente
- Department of Cell Biology, Histology and Pharmacology, University of Valladolid, 47005 Valladolid, Spain; .,Institute of Biology and Molecular Genetics, 47003 Valladolid, Spain
| | - Antonio Orduña
- Department of Microbiology, University of Valladolid, Valladolid, Spain.,Departamento de Microbiología e Inmunología, Hospital Clínico Universitario, 47003 Valladolid, Spain; and
| | - María Simarro
- Department of Nursing, University of Valladolid, 47005 Valladolid, Spain
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16
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Meana C, García-Rostán G, Peña L, Lordén G, Cubero Á, Orduña A, Győrffy B, Balsinde J, Balboa MA. The phosphatidic acid phosphatase lipin-1 facilitates inflammation-driven colon carcinogenesis. JCI Insight 2018; 3:97506. [PMID: 30232275 DOI: 10.1172/jci.insight.97506] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 08/14/2018] [Indexed: 12/12/2022] Open
Abstract
Colon cancer is a devastating illness that is associated with gut inflammation. Here, we explored the possible role of lipin-1, a phosphatidic acid phosphatase, in the development of colitis-associated tumorigenesis. Azoxymethane and dextran sodium sulfate-treated (DSS-treated) animals deficient in lipin-1 harbored fewer tumors and carcinomas than WT animals due to decreased cellular proliferation, lower expression of antiapoptotic and protumorigenic factors, and a reduced infiltration of macrophages in colon tumors. They also displayed increased resistance to DSS-induced colitis by producing less proinflammatory cytokines and experiencing less immune infiltration. Lipin-1-deficient macrophages from the colon were less activated and displayed lower phosphatidic acid phosphatase activity than WT macrophages isolated from DSS-treated animals. Transference of WT macrophages into lipin-1-deficient animals was sufficient to increase colitis burden. Furthermore, treatment of lipin-1-deficient mice with IL-23 exacerbated colon inflammation. Analysis of human databases from colon cancer and ulcerative colitis patients showed that lipin-1 expression is increased in those disorders and correlates with the expression of the proinflammatory markers CXCL1 and CXCL2. And finally, clinically, LPIN1 expression had prognostic value in inflammatory and stem-cell subtypes of colon cancers. Collectively, these data demonstrate that lipin-1 is a critical regulator of intestinal inflammation and inflammation-driven colon cancer development.
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Affiliation(s)
- Clara Meana
- Instituto de Biología y Genética Molecular, Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Valladolid, Valladolid, Spain.,Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Madrid, Spain
| | - Ginesa García-Rostán
- Instituto de Biología y Genética Molecular, Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Valladolid, Valladolid, Spain
| | - Lucía Peña
- Instituto de Biología y Genética Molecular, Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Valladolid, Valladolid, Spain.,Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Madrid, Spain
| | - Gema Lordén
- Instituto de Biología y Genética Molecular, Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Valladolid, Valladolid, Spain.,Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Madrid, Spain
| | - África Cubero
- Departamento de Microbiología, Facultad de Medicina, Universidad de Valladolid, Valladolid, Spain
| | - Antonio Orduña
- Departamento de Microbiología, Facultad de Medicina, Universidad de Valladolid, Valladolid, Spain
| | - Balázs Győrffy
- MTA-TTK Lendület Cancer Biomarker Research Group, Institute of Enzymology and Semmelweis University 2nd Department of Pediatrics, Budapest, Hungary
| | - Jesús Balsinde
- Instituto de Biología y Genética Molecular, Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Valladolid, Valladolid, Spain.,Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Madrid, Spain
| | - María A Balboa
- Instituto de Biología y Genética Molecular, Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Valladolid, Valladolid, Spain.,Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Madrid, Spain
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17
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Cubero Á, Durántez C, Almaraz A, Fernández-Lago L, Gutiérrez MP, Castro MJ, Bratos MA, Simarro M, March GA, Orduña A. Usefulness of a single-assay chemiluminescence test (Tularaemia VIRCLIA IgG + IgM monotest) for the diagnosis of human tularemia. Comparison of five serological tests. Eur J Clin Microbiol Infect Dis 2017; 37:643-649. [PMID: 29280085 DOI: 10.1007/s10096-017-3155-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 11/28/2017] [Indexed: 11/30/2022]
Abstract
The aim of this work was to ascertain the usefulness of a new commercially-available single-assay chemiluminescence test (CHT) for the diagnosis of human tularemia (Tularaemia VIRCLIA IgG + IgM monotest, Vircell, Santa Fe, Granada, Spain). A total of 773 sera from 773 patients including 364 initial sera from patients with diagnosed tularemia, patients with suspected tularemia not confirmed (100), healthy people (152), patients with serology positive to Brucella (97), patients diagnosed with other infectious diseases (30), and patients diagnosed with autoimmune diseases (30) were included. All sera were tested by CHT, "in-house" microagglutination test (MAT), immunochromatographic test (ICT) (Virapid Tularaemia, Vircell, Santa Fe Granada, Spain), and "in-house" ELISA IgG, and ELISA IgM. Of the total initial sera, 334 (sensitivity 91.8%) were positive in the CHT, 332 (sensitivity 91.2%) in the MAT, 330 (sensitivity 90.7%) in the ICT, and 328 (sensitivity 90.1%) in the ELISA IgG and ELISA IgM tests. The specificity of the CHT was 96.7%; of the MAT, 100%; of the ICT, 98.7%; and of the ELISA IgG and ELISA IgM, 97.4%. In the group of patients with serology positive to Brucella, at least 12.4% of sera were positive in tularemia tests (12.4% in ELISA IgM, 13.4% in MAT, 14.4% in ICT, and 15.5% in CHT and ELISA IgG). In conclusion, CHT presents a sensitivity and specificity in early diagnosis of human tularemia, similar to MAT, ICT, and ELISA IgG and ELISA IgM. Its single assay design allows lower costs, especially in areas of low endemicity or inter-epidemic periods.
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Affiliation(s)
- África Cubero
- Department of Microbiology, Faculty of Medicine, University of Valladolid, Valladolid, Spain
| | - Carlos Durántez
- Department of Microbiology, Faculty of Medicine, University of Valladolid, Valladolid, Spain
| | - Ana Almaraz
- Department of Microbiology, Faculty of Medicine, University of Valladolid, Valladolid, Spain
| | | | - María P Gutiérrez
- Department of Microbiology, Faculty of Medicine, University of Valladolid, Valladolid, Spain
| | - María J Castro
- Faculty of Nursery, University of Valladolid, Valladolid, Spain
| | - Miguel A Bratos
- Department of Microbiology, Faculty of Medicine, University of Valladolid, Valladolid, Spain.,Service of Microbiology, Hospital Clínico Universitario, Ramón y Cajal avenue, Number 3, 47003, Valladolid, Spain
| | - María Simarro
- Department of Microbiology, Faculty of Medicine, University of Valladolid, Valladolid, Spain
| | - Gabriel A March
- Department of Microbiology, Faculty of Medicine, University of Valladolid, Valladolid, Spain. .,Service of Microbiology, Hospital Clínico Universitario, Ramón y Cajal avenue, Number 3, 47003, Valladolid, Spain.
| | - Antonio Orduña
- Department of Microbiology, Faculty of Medicine, University of Valladolid, Valladolid, Spain.,Service of Microbiology, Hospital Clínico Universitario, Ramón y Cajal avenue, Number 3, 47003, Valladolid, Spain
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Boehm E, Zornoza M, Jourdain AA, Delmiro Magdalena A, García-Consuegra I, Torres Merino R, Orduña A, Martín MA, Martinou JC, De la Fuente MA, Simarro M. Role of FAST Kinase Domains 3 (FASTKD3) in Post-transcriptional Regulation of Mitochondrial Gene Expression. J Biol Chem 2016; 291:25877-25887. [PMID: 27789713 DOI: 10.1074/jbc.m116.730291] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 09/30/2016] [Indexed: 11/06/2022] Open
Abstract
The Fas-activated serine/threonine kinase (FASTK) family of proteins has recently emerged as a central regulator of mitochondrial gene expression through the function of an unusual RNA-binding domain named RAP (for RNA-binding domain abundant in Apicomplexans), shared by all six members of the family. Here we describe the role of one of the less characterized members, FASTKD3, in mitochondrial RNA metabolism. First, we show that, in contrast to FASTK, FASTKD2, and FASTKD5, FASTKD3 does not localize in mitochondrial RNA granules, which are sites of processing and maturation of mtRNAs and ribosome biogenesis. Second, we generated FASTKD3 homozygous knock-out cell lines by homologous recombination and observed that the absence of FASTKD3 resulted in increased steady-state levels and half-lives of a subset of mature mitochondrial mRNAs: ND2, ND3, CYTB, COX2, and ATP8/6. No aberrant processing of RNA precursors was observed. Rescue experiments demonstrated that RAP domain is required for FASTKD3 function in mRNA stability. Besides, we describe that FASTKD3 is required for efficient COX1 mRNA translation without altering mRNA levels, which results in a decrease in the steady-state levels of COX1 protein. This finding is associated with reduced mitochondrial complex IV assembly and activity. Our observations suggest that the function of this family of proteins goes beyond RNA processing and ribosome assembly and includes RNA stability and translation regulation within mitochondria.
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Affiliation(s)
- Erik Boehm
- From the Department of Cell Biology, University of Geneva, 1211 Genève 4, Switzerland
| | - María Zornoza
- the Departamento de Biología, Histología y Farmacología, Universidad de Valladolid, Instituto de Biología y Genética Molecular, Valladolid 47003, Spain
| | - Alexis A Jourdain
- From the Department of Cell Biology, University of Geneva, 1211 Genève 4, Switzerland
| | - Aitor Delmiro Magdalena
- Instituto de Investigación, Hospital Universitario 12 de Octubre (i+12), Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), U723, Madrid 28041, Spain
| | - Inés García-Consuegra
- Instituto de Investigación, Hospital Universitario 12 de Octubre (i+12), Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), U723, Madrid 28041, Spain
| | - Rebeca Torres Merino
- the Departamento de Biología, Histología y Farmacología, Universidad de Valladolid, Instituto de Biología y Genética Molecular, Valladolid 47003, Spain
| | - Antonio Orduña
- the Departamento de Microbiología, Facultad de Medicina, Edificio de Ciencias de la Salud, Valladolid 47005, Spain, and
| | - Miguel A Martín
- Instituto de Investigación, Hospital Universitario 12 de Octubre (i+12), Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), U723, Madrid 28041, Spain
| | - Jean-Claude Martinou
- From the Department of Cell Biology, University of Geneva, 1211 Genève 4, Switzerland
| | - Miguel A De la Fuente
- the Departamento de Biología, Histología y Farmacología, Universidad de Valladolid, Instituto de Biología y Genética Molecular, Valladolid 47003, Spain
| | - María Simarro
- the Departamento de Microbiología, Facultad de Medicina, Edificio de Ciencias de la Salud, Valladolid 47005, Spain, and .,the Departamento de Enfermería, Facultad de Enfermería, Edificio de Ciencias de la Salud, Avda Ramón y Cajal 7, Valladolid 47005, Spain
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19
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Kartashev V, Döring M, Nieto L, Coletta E, Kaiser R, Sierra S, Guerrero A, Stoiber H, Paar C, Vandamme A, Nevens F, Ranst MV, Cuypers L, Braun P, Ehret R, Obermeier M, Schneeweiss S, Scholten S, Römer K, Isernhagen K, Qurashi N, Heger E, Knops E, Neumann-Fraune M, Timm J, Walker A, Lübke N, Wedemeyer H, Wiesch JSZ, Lütgehetmann M, Polywka S, Däumer M, Hoffmann D, Protzer U, Marascio N, Foca A, Liberto M, Barreca G, Galati L, Torti C, Pisani V, Perno C, Ceccherini-Silberstein F, Cento V, Ciotti M, Zazzi M, Rossetti B, Luca A, Caudai C, Mor O, Devaux C, Staub T, Araujo F, Gomes P, Cabanas J, Markin N, Khomenko I, Govorukhina M, Lugovskaya G, Dontsov D, Mas A, Martró E, Saludes V, Rodríguez-Frías F, García F, Casas P, Iglesia ADL, Alados J, Pena-López M, Rodríguez M, Galán J, Suárez A, Cardeñoso L, Guerrero M, Vegas-Dominguez C, Blas-Espada J, García R, García-Bujalance S, Benítez-Gutiérrez L, Mendoza CD, Montiel N, Santos J, Viciana I, Delgado A, Martínez-Sanchez P, Fernández-Alonso M, Reina G, Trigo M, Echeverría M, Aguilera A, Navarro D, Bernal S, Lozano M, Fernández-Cuenca F, Orduña A, Eiros J, Lejarazu ROD, Martínez-Sapiña A, García-Díaz A, Haque T. New findings in HCV genotype distribution in selected West European, Russian and Israeli regions. J Clin Virol 2016; 81:82-9. [DOI: 10.1016/j.jcv.2016.05.010] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 05/17/2016] [Accepted: 05/19/2016] [Indexed: 02/06/2023]
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20
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Simarro M, Chen M, De la Fuente MA, Eiros JM, Orduña A, Anderson P. Deletion of FAST (Fas-activated serine/threonine phosphoprotein) ameliorates immune complex arthritis in mice. Mod Rheumatol 2015; 26:630-2. [DOI: 10.3109/14397595.2015.1101211] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Maria Simarro
- Departamento De Microbiología, Universidad De Valladolid, Spain,
| | - Mei Chen
- Division of Rheumatology, Immunology and Allergy, Brigham and Women’s Hospital, Boston, MA, USA, and
| | - Miguel A. De la Fuente
- Instituto De Biología Y Genética Molecular (IBGM), Universidad De Valladolid-CSIC, Valladolid, Spain
| | - José M. Eiros
- Departamento De Microbiología, Universidad De Valladolid, Spain,
| | - Antonio Orduña
- Departamento De Microbiología, Universidad De Valladolid, Spain,
| | - Paul Anderson
- Division of Rheumatology, Immunology and Allergy, Brigham and Women’s Hospital, Boston, MA, USA, and
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March GA, García-Loygorri MC, Simarro M, Gutiérrez MP, Orduña A, Bratos MA. A new approach to determine the susceptibility of bacteria to antibiotics directly from positive blood culture bottles in two hours. J Microbiol Methods 2014; 109:49-55. [PMID: 25529277 DOI: 10.1016/j.mimet.2014.12.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Revised: 12/06/2014] [Accepted: 12/08/2014] [Indexed: 10/24/2022]
Abstract
The rapid identification and antibiotic susceptibility test of bacteria causing bloodstream infections are given a very high priority by clinical laboratories. In an effort to reduce the time required for performing antibiotic susceptibility test (AST), we have developed a new method to be applied from positive blood culture bottles. The design of method was performed using blood culture bottles prepared artificially with five strains which have a known susceptibility. An aliquot of the blood culture was subcultured in the presence of specific antibiotics and bacterial counts were monitored using the Sysmex UF-1000i flow cytometer at different times up to 180min. Receiver operating curve (ROC) analysis allowed us to find out the cut-off point for differentiating between sensitive and resistant strains to the tested antibiotic. This procedure was then validated against standard commercial methods on a total of 100 positive blood culture bottles from patients. First, bacterial identification was performed by matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF-MS) directly from positive blood culture bottles as we have previously reported. Secondly, antibiotic susceptibility test was performed in the same way that was carried out in artificially prepared blood culture bottles. Our results indicate that antibiotic susceptibility test can be determined as early as 120min since a blood culture bottle is flagged as positive. The essential agreement between our susceptibility test and commercial methods (E-test, MicroScan and Vitek) was 99%. In summary, we conclude that reliable results on bacterial identification and antibiotic susceptibility test performed directly from positive blood culture bottles can be obtained within 3h.
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Affiliation(s)
- Gabriel A March
- Department of Microbiology, Faculty of Medicine, University of Valladolid, Av. Ramón y Cajal No. 7, 47005 Valladolid, Spain; Service of Microbiology and Immunology, University Clinic Hospital of Valladolid, Ramón y Cajal Avenue No. 3, 47003 Valladolid, Spain.
| | - María C García-Loygorri
- Service of Microbiology and Parasitology, Medina del Campo Hospital, C/Peñaranda No. 4, 47400 Medina del Campo, Spain.
| | - María Simarro
- Department of Microbiology, Faculty of Medicine, University of Valladolid, Av. Ramón y Cajal No. 7, 47005 Valladolid, Spain.
| | - María P Gutiérrez
- Department of Microbiology, Faculty of Medicine, University of Valladolid, Av. Ramón y Cajal No. 7, 47005 Valladolid, Spain.
| | - Antonio Orduña
- Department of Microbiology, Faculty of Medicine, University of Valladolid, Av. Ramón y Cajal No. 7, 47005 Valladolid, Spain; Service of Microbiology and Immunology, University Clinic Hospital of Valladolid, Ramón y Cajal Avenue No. 3, 47003 Valladolid, Spain.
| | - Miguel A Bratos
- Department of Microbiology, Faculty of Medicine, University of Valladolid, Av. Ramón y Cajal No. 7, 47005 Valladolid, Spain; Service of Microbiology and Immunology, University Clinic Hospital of Valladolid, Ramón y Cajal Avenue No. 3, 47003 Valladolid, Spain.
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Ariza-Miguel J, Johansson A, Fernández-Natal MI, Martínez-Nistal C, Orduña A, Rodríguez-Ferri EF, Hernández M, Rodríguez-Lázaro D. Molecular investigation of tularemia outbreaks, Spain, 1997-2008. Emerg Infect Dis 2014; 20:754-61. [PMID: 24750848 PMCID: PMC4012790 DOI: 10.3201/eid2005.130654] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Tularemia outbreaks occurred in northwestern Spain in 1997-1998 and 2007-2008 and affected >1,000 persons. We assessed isolates involved in these outbreaks by using pulsed-field gel electrophoresis with 2 restriction enzymes and multilocus variable number tandem repeat analysis of 16 genomic loci of Francisella tularensis, the cause of this disease. Isolates were divided into 3 pulsotypes by pulsed-field gel electrophoresis and 8 allelic profiles by multilocus variable number tandem repeat analysis. Isolates obtained from the second tularemia outbreak had the same genotypes as isolates obtained from the first outbreak. Both outbreaks were caused by genotypes of genetic subclade B.Br:FTNF002-00, which is widely distributed in countries in central and western Europe. Thus, reemergence of tularemia in Spain was not caused by the reintroduction of exotic strains, but probably by persistence of local reservoirs of infection.
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Menegotto F, González-Cabrero S, Lorenzo B, Cubero Á, Cuervo W, Gutiérrez MP, Simarro M, Orduña A, Bratos MÁ. Molecular epidemiology of methicillin-resistant Staphylococcus aureus in a Spanish hospital over a 4-year period: clonal replacement, decreased antimicrobial resistance, and identification of community-acquired and livestock-associated clones. Diagn Microbiol Infect Dis 2012; 74:332-7. [DOI: 10.1016/j.diagmicrobio.2012.08.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Revised: 07/30/2012] [Accepted: 08/02/2012] [Indexed: 10/27/2022]
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Menegotto F, González-Cabrero S, Cubero Á, Cuervo W, Muñoz M, Gutiérrez MP, Simarro M, Bratos MÁ, Orduña A. Clonal nature and diversity of resistance, toxins and adhesins genes of meticillin-resistant Staphylococcus aureus collected in a Spanish hospital. Infect Genet Evol 2012; 12:1751-8. [PMID: 22921729 DOI: 10.1016/j.meegid.2012.07.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Revised: 07/04/2012] [Accepted: 07/24/2012] [Indexed: 11/24/2022]
Abstract
In this study we determined the prevalence of genes coding for antimicrobial resistance, toxins, enzymes, immunoevasion and adhesins factors among 189 meticillin-resistant Staphylococcus aureus (MRSA) strains isolated from a third level hospital in Valladolid (Spain) between 2005 and 2008 in order to examine the relationship between these pathogenicity determinants, both individually and in combination, and the genetic background of main MRSA strains that are presents in Spanish hospitals. MRSA isolates were first characterised epidemiologically by a combination of molecular typing strategies like spa, SCCmec and multilocus sequence typing, and then, a cluster analysis based on pathogenicity factors genes was performed according to the hybridisation pattern of 65 virulence, 36 resistance, 15 adhesins, and 11 set/ssl genes on a Diagnostic DNA microarray (Alere StaphyType DNA microarray Jena, Germany). CC5-agr type II [ST125-SCCmecIV/VI (32.2%) or ST125-IV (19.1%), ST228-I (19.1%), ST146-IV (13.7%) and ST5- IV (0.5%)] isolates was widely distributed. CC8-agr type I [ST8-IV (11.5%), USA300 clone (0.5%), and ST239-III (1.1%)]; CC45-agr type II [ST45- IV (1.6%)], and the CC97-agr type I [ST97-IV] were also detected. We identified 42 different resistance genes profiles, 22 set/ssl genes profiles, and 91 different virulence profiles. However although the high genetic diversity of MRSA strains, mainly with respect to virulence factors genes, the results of the simultaneous assessment of resistance and virulence genes and the genetic background illustrated a correspondence relationship (p<0.001) between the different clones and same resistance and virulence genes or clusters of them. During the study period we observed changes in molecular epidemiology of MRSA isolates and as a consequence we report the changes of the resistance and virulence potential of MRSA strains produced over time in our institution.
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Affiliation(s)
- Fabíola Menegotto
- Department of Microbiology, Faculty of Medicine, University of Valladolid, Valladolid, Spain
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Simarro M, Giannattasio G, Xing W, Lundequist EM, Stewart S, Stevens RL, Orduña A, Boyce JA, Anderson PJ. The translational repressor T-cell intracellular antigen-1 (TIA-1) is a key modulator of Th2 and Th17 responses driving pulmonary inflammation induced by exposure to house dust mite. Immunol Lett 2012; 146:8-14. [PMID: 22525013 DOI: 10.1016/j.imlet.2012.04.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2012] [Revised: 03/15/2012] [Accepted: 04/05/2012] [Indexed: 11/29/2022]
Abstract
T-cell intracellular antigen-1 (TIA-1) is a translational repressor that dampens the production of proinflammatory cytokines and enzymes. In this study we investigated the role of TIA-1 in a mouse model of pulmonary inflammation induced by exposure to the allergenic extract (Df) of the house dust mite Dermatophagoides farinae. When intranasally challenged with a low dose of Df, mice lacking TIA-1 protein (Tia-1(-/-)) showed more severe airway and tissue eosinophilia, infiltration of lung bronchovascular bundles, and goblet cell metaplasia than wild-type littermates. Tia-1(-/-) mice also had higher levels of Df-specific IgE and IgG(1) in serum and ex vivo restimulated Tia-1(-/-) lymph node cells and splenocytes transcribed and released more Th2/Th17 cytokines. To evaluate the site of action of TIA-1, we studied the response to Df in bone marrow chimeras. These experiments revealed that TIA-1 acts on both hematopoietic and non-hematopoietic cells to dampen pulmonary inflammation. Our results identify TIA-1 as a negative regulator of allergen-mediated pulmonary inflammation in vivo. Thus, TIA-1 might be an important player in the pathogenesis of bronchial asthma.
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Affiliation(s)
- Maria Simarro
- Department of Medicine, Harvard Medical School, and Division of Rheumatology, Immunology and Allergy, Brigham and Women’s Hospital, Boston, MA 02115, USA
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Agahan ALD, Torres J, Fuentes-Páez G, Martínez-Osorio H, Orduña A, Calonge M. Intraocular inflammation as the main manifestation of Rickettsia conorii infection. Clin Ophthalmol 2011; 5:1401-7. [PMID: 22034560 PMCID: PMC3198414 DOI: 10.2147/opth.s21257] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Objective To report the clinical features and management of seven cases of intraocular inflammation caused by Rickettsia infection and review published literature. Methods Rickettsia conorii or Rickettsia spp. infection was diagnosed based on the following criteria: (1) positive serology according to the European Guidelines, (2) titer normalization after specific treatment, and (3) complete resolution of ophthalmic disease and accompanying symptoms after antibiotic therapy. Results Seven patients were referred for uveitis of unknown etiology. All came from regions where Mediterranean spotted fever is prevalent. One patient met the European guidelines criteria for Rickettsia spp. infection, while the other six cases met the criteria for R. conorii infection. The main symptoms were visual loss, floaters, eye redness, photophobia, and ocular pain. Predominant ophthalmic signs included vasculitis, choroiditis, vitritis, and macular edema. All patients required antibiotic treatment that resulted in the remission of the infection. Doxycycline was the first choice and the only antibiotic used to treat four patients. One patient needed ciprofloxacin as a second antibiotic after not responding to doxycycline. Two patients had doxycycline as a second antibiotic after not responding primarily to sulfonamides (which had been given after 2–3 days of doxycycline gastric intolerance); one of these patients needed ciprofloxacin as a third antibiotic. Conclusion Intraocular inflammation can occur as the main manifestation of Rickettsia conorii or Rickettsia spp. infection. It should be considered as a differential diagnosis for uveitis especially for patients living in countries where this infection is endemic in the world. Antibiotic treatment remains effective in the management of Rickettsia infection.
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Affiliation(s)
- Archimedes L D Agahan
- Ocular Immunology and Uveitis Unit, Institute of Applied Ophthalmobiology (IOBA), University of Valladolid, Valladolid, Spain
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Simarro M, Giannattasio G, De la Fuente MA, Benarafa C, Subramanian KK, Ishizawar R, Balestrieri B, Andersson EM, Luo HR, Orduña A, Boyce J, Anderson P. Fas-activated serine/threonine phosphoprotein promotes immune-mediated pulmonary inflammation. J Immunol 2010; 184:5325-32. [PMID: 20363972 DOI: 10.4049/jimmunol.1000104] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
We generated Fas-activated serine threonine phosphoprotein (FAST)-deficient mice (FAST(-/-)) to study the in vivo role of FAST in immune system function. In a model of house dust mite-induced allergic pulmonary inflammation, wild type mice develop a mixed cellular infiltrate composed of eosinophils, lymphocytes, and neutrophils. FAST(-/-) mice develop airway inflammation that is distinguished by the near absence of neutrophils. Similarly, LPS-induced alveolar neutrophil recruitment is markedly reduced in FAST(-/-) mice compared with wild type controls. This is accompanied by reduced concentrations of cytokines (TNF-alpha and IL-6 and -23) and chemoattractants (MIP-2 and keratinocyte chemoattractant) in bronchoalveolar lavage fluids. Because FAST(-/-) neutrophils exhibit normal chemotaxis and survival, impaired neutrophil recruitment is likely to be due to reduced production of chemoattractants within the pulmonary parenchyma. Studies using bone marrow chimeras implicate lung resident hematopoietic cells (e.g., pulmonary dendritic cells and/or alveolar macrophages) in this process. In conclusion, our results introduce FAST as a proinflammatory factor that modulates the function of lung resident hematopoietic cells to promote neutrophil recruitment and pulmonary inflammation.
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Affiliation(s)
- Maria Simarro
- Division of Rheumatology, Immunology and Allergy, Brigham and Women's Hospital, Smith 652, One Jimmy Fund Way, Boston, MA 02115, USA
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Mantecón MDLA, Gutiérrez MP, Zarzosa MDP, Fernández-Lago L, Colmenero JDD, Vizcaíno N, Bratos MA, Almaraz A, Cubero A, Muñoz MF, Rodríguez Torres A, Orduña A. Influence of brucellosis history on serological diagnosis and evolution of patients with acute brucellosis. J Infect 2008; 57:397-403. [PMID: 18834635 DOI: 10.1016/j.jinf.2008.08.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2008] [Revised: 07/29/2008] [Accepted: 08/19/2008] [Indexed: 11/24/2022]
Abstract
Serological diagnosis of human brucellosis is problematic in endemic brucellosis regions and with patients having a history of brucellosis. The aim of this study is to ascertain the serologic and evolutionary behavior of the tests of serum agglutination, Coombs anti-Brucella, immunocapture-agglutination, enzyme-linked immunosorbent assay (ELISA) IgG, IgA, IgM and ELISA-IgG avidity against Brucella lipopolysaccharide (S-LPS), in patients with acute brucellosis based on whether or not a history of brucellosis exists. Titers and seropositivity in all the tests assayed were higher in the patients having brucellosis history (from 90.9% in ELISA-IgM to 100% in ELISA-IgG) than in the patients lacking such history (from 79.3% in ELISA-IgM to 86.2% in Coombs, immunocapture-agglutination, and ELISA-IgG). IgG S-LPS avidity results in patients with brucellosis history were significantly higher (always over 84%) than in patients without brucellosis history (from 48.0% in the initial sera to 81% ten months later) (p<0.001). The titers of antibodies against Brucella in the initial sera and ELISA-IgG avidity against S-LPS may allow distinguishing patients with brucellosis caused by primary infection in the initial stages of the disease from patients seropositive due to prior infections from Brucella.
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Dueñas AI, Aceves M, Fernández-Pisonero I, Gómez C, Orduña A, Crespo MS, García-Rodríguez C. Selective attenuation of Toll-like receptor 2 signalling may explain the atheroprotective effect of sphingosine 1-phosphate. Cardiovasc Res 2008; 79:537-44. [PMID: 18411230 DOI: 10.1093/cvr/cvn087] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
AIMS Vascular inflammation is a major atherogenic factor and Toll-like receptor (TLR) 2 ligands, including bacterial and serum lipoproteins, seem to be involved in atherogenesis. On this basis, we analysed the effect of lipoproteins and different lipid components on TLR2-dependent signalling. METHODS AND RESULTS In TLR2-transfected human embryonic kidney 293 cells and human monocytes, oxidized low-density lipoproteins inhibited nuclear factor (NF)-kappaB-driven transcriptional activity and chemokine gene expression in response to TLR2 ligands. Sphingosine 1-phosphate (S1P) and oxidized palmitoyl-arachidonoyl-phosphatidylcholine, but not lipoprotein-carried lysophospholipids, inhibited TLR2 activation. Silencing experiments in TLR2-transfected 293 cells showed that the S1P-mediated attenuation effect is mediated by S1P receptors type 1 and type 2. To address the physiological significance of these findings, additional experiments were performed in human peripheral blood monocytes and monocyte-derived macrophages. In both cell types, S1P selectively attenuated TLR2 signalling, as NF-kappaB and extracellular signal-regulated kinase activation, but not c-Jun amino terminal kinase phosphorylation, were inhibited by physiologically relevant concentrations of S1P. Moreover, the attenuation of TLR2 signalling was partially reverted by pharmacological inhibition of phosphoinositide 3-kinase (PI3K) and Ras pathways. In addition, S1P inhibited the chemokine gene expression elicited by TLR2, but not by TLR4 ligands. CONCLUSION These findings disclose a cross-talk mechanism between lipoprotein components and TLR in which engagement of S1P receptors exert selective attenuation of TLR2-dependent activation via PI3K and Ras signalling. A corollary to these data is that the negative cross-talk of S1P receptors and TLR2 signalling might be involved in the atheroprotective effects of S1P.
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Affiliation(s)
- Ana I Dueñas
- Instituto de Biología y Genética Molecular, CSIC-Universidad de Valladolid, C/Sanz y Forés s/n, 47003-Valladolid, Spain
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Martín-Martín AI, Caro-Hernández P, Orduña A, Vizcaíno N, Fernández-Lago L. Importance of the Omp25/Omp31 family in the internalization and intracellular replication of virulent B. ovis in murine macrophages and HeLa cells. Microbes Infect 2008; 10:706-10. [PMID: 18457973 DOI: 10.1016/j.micinf.2008.02.013] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2007] [Revised: 01/31/2008] [Accepted: 02/22/2008] [Indexed: 11/17/2022]
Abstract
The role of the outer membrane proteins of the Omp25/Omp31 family in invasiveness and intracellular survival of virulent B. ovis in phagocytes was analyzed. The absence of Omp25d or Omp22 in B. ovis abolished its invasive capacity in HeLa cells and reduced it in J774.A1 cells. Additionally, in J774.A1 cells, the Deltaomp25d mutant was unable to multiply, whereas the Deltaomp22 mutant was cleared at 24h post-infection. These findings demonstrate that Omp25d and Omp22 are essential for the invasion and survival of B. ovis inside host cells, and justify the strong attenuation in virulence of the Deltaomp25d and Deltaomp22 mutants.
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Affiliation(s)
- Ana I Martín-Martín
- Departamento de Microbiología y Genética, Edificio Departamental, Universidad de Salamanca, Plaza Doctores de la Reina s/n, 37007 Salamanca, Spain
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López-Izquierdo R, Udaondo MA, Zarzosa P, García-Ramón E, Garcinuño S, Bratos MA, Orduña A, Rodríguez-Torres A, Almaraz A. Seroprevalencia de las hepatitis virales en población general representativa de una zona básica de salud urbana en Castilla y León. Enferm Infecc Microbiol Clin 2007; 25:317-23. [PMID: 17504685 DOI: 10.1157/13102267] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
INTRODUCTION Viral hepatitis is a major social, health and economic problem worldwide, requiring strict epidemiological control. METHODS This study presents the viral hepatitis seroprevalence in a representative sample from an urban health care area in Valladolid (Spain). RESULTS Antibody prevalence was as follows: anti-HAV 52%; anti-HBc, 8.2%; anti-HCV, 1.1%; anti-HEV, 0.8%; and anti-HGV 5.8%. Prevalence of anti-HAV, anti-HBc and anti-HGV increased significantly with age (P < 0.005 in all cases). In individuals younger than 20, prevalence of anti-HAV was 3.8%, anti-HBc < 0.28% and anti-HGV 1.3%. In the 20-39 year-old group, seroprevalence against HAV was associated with low educational levels (P = 0.009) and with birth in other provinces (P = 0.016). Anti-HBc seroprevalence was mainly associated with three factors: prior hospitalization before 1990 (P = 0.002; OR 3.32 [1.48-7.42]); compulsory military service before 1990 (P < 0.0001; OR 37.33 [3.68-378.03]); and acupuncture treatments (P = 0.018; OR 57.75 [26.17-127.42]). Seroprevalence against HGV was associated with hospitalizations before 1990 (P = 0.019; OR = 2.969 [1.154-7.639]). Seropositive status to HCV revealed a transfusion history (2 cases), hospitalization (1 case) or drug addiction (1 case). Only one case among those seropositive to HEV had a history of a prior trip to a HEV-endemic area. CONCLUSIONS Our study shows that the seroprevalences of viral hepatitis in a representative sample of urban population of Castille and Leon are similar to the seroprevalences observed in the rest of Spain and other developed countries, lower than the ones observed in the studies performed in Spain in the last 20 years due to the measures of prophylaxis that were taken.
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Dueñas AI, Aceves M, Orduña A, Díaz R, Sánchez Crespo M, García-Rodríguez C. Francisella tularensis LPS induces the production of cytokines in human monocytes and signals via Toll-like receptor 4 with much lower potency than E. coli LPS. Int Immunol 2006; 18:785-95. [PMID: 16574669 DOI: 10.1093/intimm/dxl015] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [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: 11/13/2022] Open
Abstract
Francisella tularensis is a virulent Gram-negative intracellular pathogen. To address the signaling routes involved in the response of host cells to LPS from F. tularensis live vaccine strain (LVS), experiments were performed in transiently transfected 293 cells. Induction of kappaB-driven transcriptional activity by 2.5 mug ml(-1) F. tularensis LPS isolated by phenol-water and ether-water extraction, was observed in cells transfected with Toll-like receptor (TLR) 4 and MD-2, although CD14 was required for optimal induction. Conversely, TLR2, TLR2/TLR1 or TLR2/TLR6 transfected cells did not show kappaB-driven transcriptional activity in the presence of F. tularensis LPS. In human monocytic cells, F. tularensis LPS activated extracellular signal-regulated kinases and the production of pro-inflammatory proteins. Concentrations of 5-10 mug ml(-1) F. tularensis LPS elicited a similar pattern of mRNA and protein induction than 0.1 mug ml(-1) E. coli LPS, including the expression of CXC chemokines (IL-8, Gro and IFN-gamma-inducible protein-10); CC chemokines (monocyte chemoattractant protein-1 and -2, macrophage-derived chemoattractant, macrophage inflammatory protein-1alpha and -1beta and RANTES (regulated upon activation, normal T cell expressed and secreted) and pro-inflammatory cytokines (IL-6 and tumor necrosis factor alpha). Altogether, these data indicate that LPS from F. tularensis LVS signals via TLR4 at higher concentrations than those required for E. coli LPS, which may explain the inflammatory reaction and the low endotoxic response associated to vaccination with LVS in humans.
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Affiliation(s)
- Ana I Dueñas
- Instituto de Biología y Genética Molecular, Universidad de Valladolid-CSIC, Valladolid, Spain
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Fernández-Lago L, Orduña A, Vizcaíno N. Reduced interleukin-18 secretion in Brucella abortus 2308-infected murine peritoneal macrophages and in spleen cells obtained from B. abortus 2308-infected mice. J Med Microbiol 2005; 54:527-531. [PMID: 15888459 DOI: 10.1099/jmm.0.45936-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Th1 immune responses in which gamma interferon (IFN-gamma) production predominates are associated with protective immunity against intracellular bacteria. Following infection, interleukin-18 (IL-18) may contribute, in association with IL-12, to optimal IFN-gamma production. In this study, the secretion of IL-18 following intracellular infection with virulent Brucella abortus 2308 in CD-1 cultured peritoneal macrophages and splenocyte cultures was investigated. The production of IL-18 was reduced in both CD-1 mouse peritoneal macrophages infected with B. abortus 2308 and splenocyte cultures obtained from B. abortus 2308-infected mice at 3, 6 and 10 days post-infection (p.i.). In contrast, splenocyte cultures obtained from B. abortus 2308-infected mice at 3 days p.i. secreted significant amounts of IFN-gamma. Stimulation of these cells with recombinant IL-18 (rIL-18) and/or rIL-12 did not significantly increase IFN-gamma secretion at the splenocyte level. These data suggest that once the infection has been established, B. abortus 2308 selectively limits IL-18 secretion without affecting endogenous IFN-gamma production.
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Affiliation(s)
- Luis Fernández-Lago
- Departamento de Microbiología y Genética, Edificio Departamental, Universidad de Salamanca, Plaza Doctores de la Reina s/n, 37007 Salamanca, Spain 2Departamento de Microbiología, Facultad de Medicina, Universidad de Valladolid, Valladolid, Spain
| | - Antonio Orduña
- Departamento de Microbiología y Genética, Edificio Departamental, Universidad de Salamanca, Plaza Doctores de la Reina s/n, 37007 Salamanca, Spain 2Departamento de Microbiología, Facultad de Medicina, Universidad de Valladolid, Valladolid, Spain
| | - Nieves Vizcaíno
- Departamento de Microbiología y Genética, Edificio Departamental, Universidad de Salamanca, Plaza Doctores de la Reina s/n, 37007 Salamanca, Spain 2Departamento de Microbiología, Facultad de Medicina, Universidad de Valladolid, Valladolid, Spain
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Dueñas AI, Orduña A, Crespo MS, García-Rodríguez C. Interaction of endotoxins with Toll-like receptor 4 correlates with their endotoxic potential and may explain the proinflammatory effect of Brucella spp. LPS. Int Immunol 2004; 16:1467-75. [PMID: 15339879 DOI: 10.1093/intimm/dxh148] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Endotoxins displaying differences in the chemical structure of their lipid A were used to induce the expression of chemokines in the human monocytic THP-1 cell line. LPS from two enterobacterial species such as Escherichia coli and Yersinia enterocolitica induced mRNA expression of IFN-gamma-inducible protein (IP)-10, macrophage-inflammatory protein (MIP)-1alpha, MIP-1beta, monocyte chemoattractant protein (MCP)-1 and IL-8. LPS from the non-enterobacterial genera Brucella and Ochrobactrum induced the expression of these chemokines to a lower extent. Attempts to address the signaling routes involved in these responses were carried out in transiently transfected HEK293 cells. Induction of kappaB-driven transcriptional activity by enterobacterial LPS was observed in cells transfected with TLR-4 alone, although co-transfection of TLR-4, MD-2 and CD14 provided optimal induction. The response to Brucella spp. and Ochrobactrum anthropi LPS was only significant at the concentration of 10 microg/ml. These data indicate that LPS from Brucella spp. and O. anthropi, which contain lipid A moieties with structural features different from those of Enterobacteriaceae elicit biochemical signaling via TLR-4 only at high concentrations. Neither TLR-1, TLR-2 and TLR-6 nor heterodimeric combinations of these receptor molecules are involved. Conversely, the ability of LPS to activate the TLR-4 route is a reliable molecular biomarker for endotoxicity.
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Affiliation(s)
- Ana I Dueñas
- Unidad de Investigación, Hospital Clínico Universitario, Valladolid, Spain
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35
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Sbihi Y, Gil JR, Alvarez PA, Orduña A, Rodríguez‐Torres A, Osuna A. Development of a dipstick dye immunoassay for diagnosing hydatidosis. J Clin Lab Anal 2004; 17:219-22. [PMID: 14614744 PMCID: PMC6808177 DOI: 10.1002/jcla.10097] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
We have developed a kit to diagnose hydatidosis, based on the detection of specific antibodies. This disease, caused by larvae of the cestode Echinococcus granulosus, is a zoonosis commonly found throughout the world. The diagnostic kit discriminates between positive and negative cases in a way that is easily interpreted, i.e., positive cases form a colored band on an inert substrate. The results show test sensitivity to be some 94.87% and specificity 85.71%, which is comparable to those of the ELISA technique. The high sensitivity and specificity of this test affords the great advantage of speed in diagnosing this parasitosis. No other equipment or procedure is required.
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Affiliation(s)
- Younes Sbihi
- Instituto de Biotecnología, Campus Fuentenueva, Facultad de Ciencias, Universidad de Granada, Granada, Spain
| | - José R. Gil
- Instituto de Biotecnología, Campus Fuentenueva, Facultad de Ciencias, Universidad de Granada, Granada, Spain
| | - Pedro A. Alvarez
- Instituto de Biotecnología, Campus Fuentenueva, Facultad de Ciencias, Universidad de Granada, Granada, Spain
| | - Antonio Orduña
- Departamento de Microbiología, Facultad de Medicina, Valladolid, Spain
| | | | - Antonio Osuna
- Instituto de Biotecnología, Campus Fuentenueva, Facultad de Ciencias, Universidad de Granada, Granada, Spain
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Gutiérrez MP, Ramírez I, Zarzosa MDP, Fernández JM, Dueñas AI, Mantecón MA, Almaraz A, Rodríguez-Recio MJ, Marcos H, Alonso P, Bratos MA, Orduña A, Rodríguez-Torres A. [Seroprevalence of infection due to Echinococcus granulosus in the population of Castilla and León (Spain)]. Enferm Infecc Microbiol Clin 2004; 21:563-7. [PMID: 14642255 DOI: 10.1016/s0213-005x(03)73010-9] [Citation(s) in RCA: 14] [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: 11/17/2022]
Abstract
INTRODUCTION Human hydatidosis is a prevalent zoonotic disease in the Castilla y León region of Spain. The aim of this study is to investigate the seroprevalence of Echinococcus granulosus infection in this region. METHODS We studied 4824 serum samples from a random, representative population of healthy individuals from each province of Castilla y León, obtained over one year. An indirect enzyme-immunoassay developed in our laboratory was used to determine the presence of IgG antibodies against Echinococcus granulosus in these samples. RESULTS IgG antibodies against Echinococcus granulosus were detected in 3.4% (164/4824) of samples studied, with a range of 1.26% to 7.10%, depending on the province. Antibody seroprevalence increased significantly with age, but there was no significant sex-related difference (3.66% men vs. 3.14% women). CONCLUSION The seroprevalence of Echinococcus granulosus infection in Castilla y León is still high. These data contribute to hydatidosis surveillance within the control program for this disease.
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Hernández-Novoa B, Orduña A, Bratos MA, Eiros JM, Fernández JM, Gutiérrez MP, Alonso PA, Mantecón MA, Almaraz A, Oteo JA, Rodríguez-Torres A. Utility of a commercial immunoblot kit (BAG-Borrelia blot) in the diagnosis of the preliminary stages of Lyme disease. Diagn Microbiol Infect Dis 2003; 47:321-9. [PMID: 12967745 DOI: 10.1016/s0732-8893(03)00111-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The aim of this study was to evaluate the usefulness of a commercial immunoblot (IgG and IgM BAG-Borrelia blot) in the serologic diagnosis of the early stages of Lyme disease. A total of 42 sera from patients with Lyme disease (24 patients with localized early stage (LES) and 18 patients with disseminated early stage (DES)) and 129 sera from patients with non-Lyme diseases (specificity control sera) were studied. IgG anti-p41 from Borrelia burgdorferi s.l. was present in 95.2% of patients followed by anti-p41/I PBi (16.7%), anti-p100 (9.5%) and anti-OspA (9.5%). IgM anti-p41 was present in 66.7% of patients, p41/iPBi (54.8%) and OspC (33.3%). IgM against p100, OspA and OspC were more frequent in DES patients (16.7%, 27.8% and 44.4%) than in LES patients (0.0%, 4.2% and 25.0%). In 4.8% of the cases no IgG bands were present and in 26.2% no IgM bands were present. With the exception of isolated p41 bands (59.5%), no band pattern exceeded 17%. Using manufacturer's instructions, test sensitivity in diagnosis of the early stage of Lyme disease is 61.9%, specificity 98.4% and positive and negative predictive values 92.8% and 88.8% respectively. Applying the EUCALB 5, 6 or 7 rules sensitivity increased to 73.8% although specificity decreased to 89.9%. Of the 129 specific control sera, 41.8% presented IgG anti-p41 and 10.8% IgM anti-p41. Patients with non-Lyme diseases that presented more IgG and IgM bands were those patients with syphilis (88.2%), patients with anti-HIV antibodies (57.8%) and patients with anti-nuclear antibodies (ANA) (52.3%).
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Affiliation(s)
- Beatriz Hernández-Novoa
- Departamento de Microbiología, Hospital Universitario de Valladolid, Facultad de Medicina, Spain
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38
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Gutiérrez MP, Bratos MA, Garrote JI, Dueñas A, Almaraz A, Alamo R, Rodríguez Marcos H, Rodríguez Recio MJ, Muñoz MF, Orduña A, Rodríguez-Torres A. Serologic evidence of human infection by Francisella tularensis in the population of Castilla y León (Spain) prior to 1997. FEMS Immunol Med Microbiol 2003; 35:165-9. [PMID: 12628554 DOI: 10.1016/s0928-8244(03)00002-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Prior to an outbreak in Castilla y León in December 1997, tularaemia was practically non-existent in Spain. In this paper we studied the prevalence of antibodies against Francisella tularensis in a representative sample of the population (4825 people) from Castilla y León (Spain) in samples collected before this outbreak. Antibodies against F. tularensis were detected in nine (0.19%) of the 4825 sera, with antibody titres ranging from 1/20 to 1/160. Of these nine sera, one was positive in seroagglutination against Brucella. Seroagglutination against other bacteria (Yersinia enterocolitica O:9 and O:3 and Proteus OX19) was negative in all sera. Seroprevalence of antibodies in females was 0.20% and 0.17% in males; no statistically significant differences were found in prevalence in terms of sex, age or province.
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Affiliation(s)
- María P Gutiérrez
- Departamento de Microbiologia, Hospital Clinico Universitario, Facultad de Medicina Area de Microbiologia, Ramón y Cajal 7, 47005 Valladolid, Spain
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39
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Gutiérrez MP, Orduña A, Dueñas A, Bratos MA, Almaraz A, Alamo R, Rodríguez Recio MJ, Rodríguez Marcos H, Rodríguez Torres A. [Prevalence of antibodies against Francisella tularensis in Castilla y León (Spain) before 1997]. Med Clin (Barc) 2003; 120:97-8. [PMID: 12605730] [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: 03/01/2023]
Abstract
BACKGROUND AND OBJECTIVES The aim of this paper was determine the prevalence of antibodies against Francisella tularensis in the representative sample of people from Castilla-León (Spain) before epidemic outbreak of end 1997. SUBJECTS AND METHOD We obtain 4,825 sera (between april-1996 and april-1997) of people from Castilla-León. All sera were tested by a microagglutination technique to detect antibodies against Francisella tularensis. The positive sera were tested to determine cross-reaction with Brucella, Yersinia enterocolitica and Proteus in the tube agglutination tests. RESULTS We detected antibodies against Francisella tularensis in 9 (0,19%) of the 4,825 sera. Only one serum from the 9 seropositive was positive in the tube agglutination against Brucella. None of the 9 sera were positive against the remaining bacterial antigen tested. CONCLUSIONS In the people of Castilla-León before 1997 the prevalence of antibodies against Francisella tularensis was 0,19%.
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Orduña A, Dueñas A, Ángel Bratos M, Almaraz A, Purificación Gutiérrez M, Álamo R, Rodríguez Recio MJ, Rodríguez Marcos H, Rodríguez Torres A. Prevalencia de anticuerpos frente a Francisella tularensis en la población de Castilla y León con anterioridad a 1997. Med Clin (Barc) 2003. [DOI: 10.1157/13042644] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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41
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Purificación Gutiérrez M, Orduña A, Dueñas A, Ángel Bratos M, Almaraz A, Álamo R, Jesús Rodríguez Recio M, Rodríguez Marcos H, Rodríguez Torres A. Prevalencia de anticuerpos frente a Francisella tularensis en la población de Castilla y León con anterioridad a 1997. Med Clin (Barc) 2003. [DOI: 10.1016/s0025-7753(03)73613-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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42
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López-Urrutia L, Alonso A, Bayón Y, Nieto ML, Orduña A, Sánchez Crespo M. Brucella lipopolysaccharides induce cyclooxygenase-2 expression in monocytic cells. Biochem Biophys Res Commun 2001; 289:372-5. [PMID: 11716482 DOI: 10.1006/bbrc.2001.5995] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Human brucellosis is characterized by the presence of both acute inflammatory episodes and chronic inflammation with granuloma formation. On this basis, the proinflammatory effects of smooth lipopolysaccharide of Brucella (S-LPS) were addressed and compared to those of LPS from Escherichia coli. For this purpose, the induction of cyclooxygenase-2 (COX-2), the production of the chemokine monocyte chemoattractant protein-1 (MCP-1), and the activation of the nuclear factor kappa B (NF-kappa B) were studied. S-LPS was found to induce both COX-2 expression and MCP-1 production; however, the potency of E. coli LPS exceeded that of Brucella S-LPS by some orders of magnitude. However, at concentrations above 1 microg/ml, all of the LPS produced comparable effects, including their ability to activate the NF-kappa B system. These observations help explain the inflammatory events associated with Brucella infection and the ability of Brucella to produce monocyte recruitment and granuloma formation.
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Affiliation(s)
- L López-Urrutia
- Departamento de Microbiología, Facultad de Medicina, Instituo de Biología y Genética Molecular, CSIC, Valladolid, Spain
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43
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Casao MÁ, Díaz R, Orduña A, Gamazo C. Promotion of platelet aggregation by sera from brucellosis patients with antiphosphatidylcholine antibodies. J Med Microbiol 2001; 50:965-968. [PMID: 11699593 DOI: 10.1099/0022-1317-50-11-965] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Results obtained in this study suggest that in human brucellosis there is an antibody response against platelet-activating factor (PAF) and phosphatidylcholine (PC). The specificity of the antiphospholipid response was determined by inhibition assays. The PAF molecule was able to inhibit the anti-PC activity of the brucellosis-control serum. This inhibition capacity of PAF was similar to that of the phosphorylcholine (PYC) group. These results suggest that the inhibition activity could be attributed to the PYC group present in both PAF and PC molecules. Consequently, these findings support an immunodominant role of PYC in the antiphospholipid response of brucellosis. Furthermore, sera from patients infected with Brucella organisms were able to cause platelet aggregation, as were brucella phospholipids, suggesting a possible role of the antiphospholipid antibodies and phospholipids in the inflammatory response in brucellosis.
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Affiliation(s)
| | | | - Antonio Orduña
- Departamento Microbiología. Universidad de Navarra, Clínica Universitaria de Navarra. 31080, Pamplona and *Departamento Microbiología, Hospital Universitario, Facultad de Medicina, Universidad de Valladolid, Spain
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44
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Schoolfield M, Orduña A. Understanding staff nurse responses to change: utilization of a grief-change framework to facilitate innovation. 1994 [classical article]. CLIN NURSE SPEC 2001; 15:224-9. [PMID: 11855616 DOI: 10.1097/00002800-200109000-00018] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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45
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Sbihi Y, Rmiqui A, Rodriguez-Cabezas MN, Orduña A, Rodriguez-Torres A, Osuna A. Comparative sensitivity of six serological tests and diagnostic value of ELISA using purified antigen in hydatidosis. J Clin Lab Anal 2001. [PMID: 11170228 DOI: 10.1002/1098-2825(2001)15:] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Most serodiagnostic techniques have been evaluated for diagnosis of cystic hydatid disease caused by Echinococcus granulosus. Each, to varying degrees, has been shown to give false results, with considerable variation between laboratories. The comparative study was made concerning the sensitivity of the immunodiagnostic methods based on 58 sera from hydatid disease with different cyst locations. Latex agglutination, immunoelectrophoresis (IEP), and specific IgE, IgG enzyme-linked immunosorbent assay (ELISA) tests were studied. Specific IgG ELISA AgB (antigen B-rich fraction) was the most sensitive test (96.5%) and the least sensitive tests were specific IgE ELISA (24.1%) and IEP (25.8%). The low sensitivity of these two tests was due partly to the low reactivity detected in the sera of patients with lung hydatidosis. Initial laboratory studies showed purified antigens to be preferable to crude cyst fluid, regardless of the type of test used. For this reason, we evaluated the sensitivity and specificity of ELISA by using the purified antigen-B-rich fraction. In all, 117 sera were examined: 78 sera from patients with hydatidosis surgically confirmed, 15 sera from healthy control subjects, and 24 sera from patients with diseases other than hydatidosis. The method gave good results: 93.5% sensitivity, 89.7% specificity, and 92.3% diagnostic efficacy.
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Affiliation(s)
- Y Sbihi
- Instituto de Biotecnología, Facultad de Ciencias, Universidad de Granada, Granada, Spain
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46
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Casañas MC, Queipo-Ortuño MI, Rodriguez-Torres A, Orduña A, Colmenero JD, Morata P. Specificity of a polymerase chain reaction assay of a target sequence on the 31-kilodalton Brucella antigen DNA used to diagnose human brucellosis. Eur J Clin Microbiol Infect Dis 2001; 20:127-31. [PMID: 11305467 DOI: 10.1007/pl00011242] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The aim of this study was to evaluate the specificity of a polymerase chain reaction assay for detecting Brucella DNA using primers specific for the amplification of a 223 bp region of the sequence encoding a 31 kDa immunogenic Brucella abortus protein (BCSP31). DNA from all Brucella strains, including type, reference, vaccine and field strains, were correctly amplified. With the exception of Ochrobactrum spp., no other amplification was detected with a broad panel of microorganisms serologically or phylogenetically related to Brucella spp. This very good degree of specificity, together with its high yield demonstrated in previous clinical studies, confirms that this polymerase chain reaction assay could be a useful tool for the diagnosis of human brucellosis.
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Affiliation(s)
- M C Casañas
- Microbiology Service, Carlos Haya Hospital, Malaga, Spain
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47
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Sbihi Y, Rmiqui A, Rodriguez‐Cabezas MN, Orduña A, Rodriguez‐Torres A, Osuna A. Comparative sensitivity of six serological tests and diagnostic value of ELISA using purified antigen in hydatidosis. J Clin Lab Anal 2001; 15:14-8. [PMID: 11170228 PMCID: PMC6875702 DOI: 10.1002/1098-2825(2001)15:1<14::aid-jcla3>3.0.co;2-7] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.3] [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] [Indexed: 01/23/2023] Open
Abstract
Most serodiagnostic techniques have been evaluated for diagnosis of cystic hydatid disease caused by Echinococcus granulosus. Each, to varying degrees, has been shown to give false results, with considerable variation between laboratories. The comparative study was made concerning the sensitivity of the immunodiagnostic methods based on 58 sera from hydatid disease with different cyst locations. Latex agglutination, immunoelectrophoresis (IEP), and specific IgE, IgG enzyme-linked immunosorbent assay (ELISA) tests were studied. Specific IgG ELISA AgB (antigen B-rich fraction) was the most sensitive test (96.5%) and the least sensitive tests were specific IgE ELISA (24.1%) and IEP (25.8%). The low sensitivity of these two tests was due partly to the low reactivity detected in the sera of patients with lung hydatidosis. Initial laboratory studies showed purified antigens to be preferable to crude cyst fluid, regardless of the type of test used. For this reason, we evaluated the sensitivity and specificity of ELISA by using the purified antigen-B-rich fraction. In all, 117 sera were examined: 78 sera from patients with hydatidosis surgically confirmed, 15 sera from healthy control subjects, and 24 sera from patients with diseases other than hydatidosis. The method gave good results: 93.5% sensitivity, 89.7% specificity, and 92.3% diagnostic efficacy.
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Affiliation(s)
- Younes Sbihi
- Instituto de Biotecnología, Facultad de Ciencias, Universidad de Granada, Granada, Spain
| | - Ahlam Rmiqui
- Instituto de Biotecnología, Facultad de Ciencias, Universidad de Granada, Granada, Spain
| | | | - Antonio Orduña
- Departamento de Microbiología, Hospital Universitario, Facultad de Medicina, Valladolid, Spain
| | | | - Antonio Osuna
- Instituto de Biotecnología, Facultad de Ciencias, Universidad de Granada, Granada, Spain
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Abstract
Hydatid infestation of the lung can be primary or secondary. In three of four cases the cyst is a single one. Hydatidosis of a different location, particularly the liver, may be associated. The period of initial growth of primary hydatidosis is frequently asymptomatic. Bronchial fistulization is an important event in the evolution of the cyst. Intrapleural rupture constitutes a rare eventuality, but it is often as characteristic as it is severe. Secondary, metastatic hydatidosis, due to breaking of a primary visceral cyst in a vein or heart, is rare. A special form is so-called multiple malignant pulmonary hydatidosis, which causes progressive respiratory deficiency and right ventricular failure. There are a variety of radiographic images. Ultrasonography, computed tomography, and magnetic resonance imaging can recognize certain details of the lesions and discover others that are not visible by conventional radiography. For a specific serologic diagnosis, our experience favors the immunoglobulin G enzyme-linked immunosorbent assay and immunoelectrophoresis. Treatment is essentially surgical. In general, chemotherapy is used as a complement to operative treatment to avoid recurrence. Surgery has two objectives: to remove the parasite and to treat the bronchipericyst pathology and other associated lesions. The prognosis has changed during the last few years, and results are now commonly satisfactory. The most frequent complications are pleural infection and prolonged air leakage. Operative mortality does not exceed 1% to 2%. Despite the low mortality and the limited recurrence rate, it is necessary to remember the invading character of pulmonary hydatid disease, which sometimes makes therapy difficult and questionable. Prophylaxis is essential to eradicate the disease completely.
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Affiliation(s)
- G Ramos
- Thoracic Surgery Service, University Hospital, Valladolid, Spain.
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49
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Orduña A, Almaraz A, Prado A, Gutierrez MP, Garcia-Pascual A, Dueñas A, Cuervo M, Abad R, Hernández B, Lorenzo B, Bratos MA, Torres AR. Evaluation of an immunocapture-agglutination test (Brucellacapt) for serodiagnosis of human brucellosis. J Clin Microbiol 2000; 38:4000-5. [PMID: 11060059 PMCID: PMC87532 DOI: 10.1128/jcm.38.11.4000-4005.2000] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We evaluated the validity and the usefulness of a new test for the diagnosis of human brucellosis based on an immunocapture-agglutination technique. A total of 315 sera from 82 patients with a diagnosis of brucellosis, 157 sera from patients in whom brucellosis was suspected but not confirmed, and 412 sera from people living in rural areas with endemic brucellosis were studied. The seroagglutination test (SAT), Coombs anti-Brucella test, and Brucellacapt test were evaluated. All the initial sera from the 82 patients proved to be positive in Brucellacapt and Coombs tests, while only 75 (91.4%) were positive in the SAT. If a >/=1/160 diagnostic threshold titer was defined for the Brucellacapt test, Coombs test, and SAT, the sensitivities were 95.1, 91.5, and 65.8%, respectively. Taking the same diagnostic threshold titer for the 157 sera from the unconfirmed but suspected patients, the specificities of the Brucellacapt, Coombs, and SAT were 81.5, 96.2, and 100%, respectively; for the 412 control sera, the specificities were 99.0, 99.8, and 100%. The diagnostic efficiency (area below the receiver operating characteristic curve) of Brucellacapt was 0.987852 (95% confidence interval [CI], 0.95109 to 0.99286), very similar to the diagnostic efficiency of the Coombs test (0.97611; 95% CI, 0.94781 to 0.99146) and higher than that of SAT (0.91013; 95% CI, 0.86649 to 0.94317). The results of the Brucellacapt test were compared with those of the Coombs test (correlation coefficient, 0.956; P = 0.000) and SAT (correlation coefficient, 0.866; P = 0.000). The study shows very good correlation between the Brucellacapt and Coombs tests, with a high concordance between titers obtained in the two tests. Nevertheless, lower correlation and concordance were found between the Brucellacapt and Coombs tests when the results for titers of >/=1/160 were compared (0.692; P = 0.000). In acute brucellosis, the Brucellacapt and Coombs tests render positive titers of >/=1/160. When the titers are lower, they increase significantly in the following 30 days, despite the evolution of SAT titers. In contrast, Brucellacapt and Coombs titers are always high (>/=1/640) in brucellosis with long evolution, whether SAT titers are higher or lower than 1/160.
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Affiliation(s)
- A Orduña
- Departamento de Microbiología, Facultad de Medicina, Valladolid, Spain.
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50
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Dueñas AI, Ortega M, Garrote I, de Frutos M, Gutiérrez P, García-Pascual A, Cuervo M, Hernández Novoa B, Bratos MA, Almaraz A, Orduña A, Rodríguez Torres A. [Laboratory diagnosis and serologic course in patients with tularemia]. Med Clin (Barc) 2000; 114:407-10. [PMID: 10786358] [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: 02/16/2023]
Abstract
BACKGROUND Tularemia was practically unknown in Spain until the end of 1997, when an epidemic outbreak was declared. This paper presents the data on microbiological diagnosis of 55 patients who suffered from tularemia. PATIENTS AND METHODS Thirty-two samples from 19 patients and 151 serum samples from 55 patients were obtained for culture. Serologic diagnosis was performed by tube sero-agglutination and microagglutination. Three types of tests were performed on all sera: Wright sero-agglutination (WSA), Coombs test against Brucella spp. and sero-agglutination against Yersinia enterocolitica O:3, Yersinia enterocolitica O:3, and Proteus OX 19. RESULTS F. tularensis was found in two samples (6.25%) of the 32 received. Titers > or = 1/160 were obtained in 78.2% and 74.5% of the initial sera by tube sero-agglutination and microagglutination, respectively. Correlation between the two tests was 0.80 (p < 0.001). Prozone phenomenon was observed in 59.9% of the sera, while crossed reactivity to Brucella spp. and Proteus spp. was found in 9.3% and 22.8%, respectively. No crossed reactivity was observed with Yersinia spp. CONCLUSIONS Culture of F. tularensis has low sensitivity. The correlation obtained between tube sero-agglutination and microagglutination is good. Both techniques are useful in routine diagnosis of tularemia, although microagglutination has some advantages over tube agglutination.
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Affiliation(s)
- A I Dueñas
- Departamento de Microbiología, Hospital Universitario de Valladolid
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