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Martínez-Ramos N, Ávila L, Rodríguez S, Ortiz M, Pira D, Rangel V, Ariza A, Betancourt-Niño N, Aldana-Rojas G, García-Padilla D, Monroy M, Sánchez JF, Cadena C, Quintero L, Bueno D, Prieto M, Martínez-Martínez A, Albarracín SL, Murillo R. Attitudes scale toward cancer-related cognitive changes - an initial Colombian validation. Eur Rev Med Pharmacol Sci 2023; 27:7738-7748. [PMID: 37667952 DOI: 10.26355/eurrev_202308_33428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 09/06/2023]
Abstract
OBJECTIVE The aim of this study was to develop an initial valid tool to measure attitudes toward cancer-related cognitive changes. SUBJECTS AND METHODS After revising the literature, three main dimensions were hypothesized. Eight judges were contacted to obtain content validity evidence. A robust Exploratory Factor Analysis (EFA) was performed via a parallel analysis with an Unweighted Least Squares (ULS) estimator and polychoric correlations. The results were crossed with sociodemographic variables to find possible statistical differences and estimate the size effect. Analysis was performed in the software Factor and the statistical package R. RESULTS A sample of 374 participants was obtained, involving oncology patients, their caregivers, and people from the general community. A statistical fit was found in two dimensions: Awareness and Judgments [root mean squared error of approximation (RMSEA) = 0.042, standardized root mean square residual (SRMR) = 0.02, comparative fit index (CFI) = 0.99, Tucker-Lewis index (TLI) = 0.98] with a moderate correlation between them (r = 0.612). Optimal reliability indices were obtained for the total scale and its dimensions. No real statistical difference was found between sociodemographic variables; the interpretation norms were established via the quartiles. CONCLUSIONS The first attempt to measure the construct of interest was developed with two primary validity evidence based on the content and its internal structure. This instrument could help strengthen the prevention of cancer-related cognitive changes. More research is needed to adhere more valid evidence to the scale.
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Gomez SA, Sanz MB, Rapoport M, Sucin G, Corallo TA, Poklepovich T, Campos J, Ceriana P, de Mendieta JM, Prieto M, Pasteran F, Corso A. Novel Metallo-β-Lactamase blaCVI-1 Isolated from a Chromobaterium violaceum Clinical Strain Resistant to Colistin. Pathogens 2023; 12:961. [PMID: 37513808 PMCID: PMC10385785 DOI: 10.3390/pathogens12070961] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/08/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
OBJECTIVE We aimed to describe a colistin (COL)-resistant (R) Chromobacterium violaceum (Cvi) isolate from a septic patient in Argentina expressing a previously unknown gene, blaCVI-1. METHODS In 2019, a 12 year old child was injured with a thorn in a lagoon. The child was hospitalized due to sepsis and multiple abscesses. Cvi was isolated from skin and soft tissue and tracheal aspirate. The patient was successfully treated with imipenem (IMI) plus amikacin. Antimicrobial susceptibility was assessed by disk diffusion, broth microdilution, and the E-test. Carbapenemase activity was assayed by double-disk synergy and microbiological tests. Resistance, virulence, and additional gene searches were performed by in silico analysis of sequences obtained by whole-genome sequencing (WGS). A maximum likelihood phylogenetic tree was built with public Cvi genomes. RESULTS R was seen for IMI and COL. Expression of a metallo-β-lactamase was confirmed. Genome analysis revealed blaCVI-1, a subclass B2 metallo-β-lactamase with 62.66% ID with CphA from A. hydrophila (WP081086394). R to COL could be attributed to the arnC and arnT genes. Virulence factors required for invasion and toxicity were also found. No plasmids were detected. The phylogeny tree showed two main clades with geographical distinction, and the isolate studied here stands alone in a branch closely related to two clinical isolates from the USA. CONCLUSIONS This is the second report of infection by Cvi in Argentina. This pathogen carried a new gene, blaCVI-1, a metallo-β-lactamase that can be detected by routine methods. Prompt suspicion of C. violaceum infection is crucial to treating this rare pathogen rapidly and properly.
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Affiliation(s)
- Sonia A Gomez
- Servicio Antimicrobianos, INEI-ANLIS "Dr. Carlos G. Malbrán", National and Regional Reference Laboratory in Antimicrobial Resistance (NRRLAR), Buenos Aires C1282AFF, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires C1425FQB, Argentina
| | - María Belén Sanz
- Servicio Antimicrobianos, INEI-ANLIS "Dr. Carlos G. Malbrán", National and Regional Reference Laboratory in Antimicrobial Resistance (NRRLAR), Buenos Aires C1282AFF, Argentina
| | - Melina Rapoport
- Servicio Antimicrobianos, INEI-ANLIS "Dr. Carlos G. Malbrán", National and Regional Reference Laboratory in Antimicrobial Resistance (NRRLAR), Buenos Aires C1282AFF, Argentina
| | - Graciela Sucin
- Sector de Bacteriología, Hosp. Pediátrico "Dr. Avelino Castelán", Resistencia H3508, Argentina
| | - Teresa A Corallo
- Sector de Bacteriología, Hosp. Pediátrico "Dr. Avelino Castelán", Resistencia H3508, Argentina
| | - Tomás Poklepovich
- Plataforma de Genómica y Bioinformática, INEI-ANLIS "Dr. Carlos G. Malbrán", Buenos Aires CP1281, Argentina
| | - Josefina Campos
- Plataforma de Genómica y Bioinformática, INEI-ANLIS "Dr. Carlos G. Malbrán", Buenos Aires CP1281, Argentina
| | - Paola Ceriana
- Servicio Antimicrobianos, INEI-ANLIS "Dr. Carlos G. Malbrán", National and Regional Reference Laboratory in Antimicrobial Resistance (NRRLAR), Buenos Aires C1282AFF, Argentina
| | - Juan Manuel de Mendieta
- Servicio Antimicrobianos, INEI-ANLIS "Dr. Carlos G. Malbrán", National and Regional Reference Laboratory in Antimicrobial Resistance (NRRLAR), Buenos Aires C1282AFF, Argentina
| | - Mónica Prieto
- Servicio Bacteriología Especial INEI-ANLIS "Dr. Carlos G. Malbrán", Buenos Aires CP1281, Argentina
| | - Fernando Pasteran
- Servicio Antimicrobianos, INEI-ANLIS "Dr. Carlos G. Malbrán", National and Regional Reference Laboratory in Antimicrobial Resistance (NRRLAR), Buenos Aires C1282AFF, Argentina
| | - Alejandra Corso
- Servicio Antimicrobianos, INEI-ANLIS "Dr. Carlos G. Malbrán", National and Regional Reference Laboratory in Antimicrobial Resistance (NRRLAR), Buenos Aires C1282AFF, Argentina
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Cipolla L, Rocca F, Armitano R, López B, Prieto M. [Legionnaires' disease in Argentina: Evolution of the laboratory diagnostic strategy]. Rev Argent Microbiol 2023:S0325-7541(22)00103-1. [PMID: 36604301 DOI: 10.1016/j.ram.2022.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 07/16/2022] [Accepted: 10/18/2022] [Indexed: 01/04/2023] Open
Abstract
Legionnaires' disease (LD) is severe acute pneumonia that occurs in sporadic or epidemic form, and generally requires hospitalization. The objective of this work was to describe the experience in the LD laboratory diagnostic approach in Argentina during the period 2016-2021. The laboratory analyzed 168 clinical specimens from 93 cases of suspected LD pneumonia. Laboratory tests included the detection of the soluble antigen of Legionella pneumophila serogroup 1 in urine sample, detection of DNA of Legionella spp. in lower respiratory secretions by conventional and commercial molecular methods and isolation in selective medium. LD was confirmed in 12 patients. The urinary antigen allowed the diagnosis for 8 patients. L. pneumophila was isolated from the respiratory material of 6 patients suffering from health care-associated pneumonia, who had been previously diagnosed using the commercial molecular method. Fifty percent of these cases did not show detectable urinary antigen. A single patient did not shows neither detectable antigenuria nor isolation of Legionella from the respiratory sample and was diagnosed as a confirmed case of LD by the detection of DNA of Legionella spp. by PCR directly from the respiratory secretion and the epidemiological link with another case of confirmed LD by culture. Urinary antigen detection is the first-line diagnostic test. However, the incorporation of complementary molecular methods has proved to avoid false negatives and contributed to a better understanding of the true incidence of the disease.
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Affiliation(s)
- Lucía Cipolla
- Instituto Nacional de Enfermedades Infecciosas, ANLIS Dr. Carlos Malbrán, Ciudad Autónoma de Buenos Aires, Argentina
| | - Florencia Rocca
- Instituto Nacional de Enfermedades Infecciosas, ANLIS Dr. Carlos Malbrán, Ciudad Autónoma de Buenos Aires, Argentina
| | - Rita Armitano
- Instituto Nacional de Enfermedades Infecciosas, ANLIS Dr. Carlos Malbrán, Ciudad Autónoma de Buenos Aires, Argentina
| | - Beatriz López
- Instituto Nacional de Enfermedades Infecciosas, ANLIS Dr. Carlos Malbrán, Ciudad Autónoma de Buenos Aires, Argentina
| | - Mónica Prieto
- Instituto Nacional de Enfermedades Infecciosas, ANLIS Dr. Carlos Malbrán, Ciudad Autónoma de Buenos Aires, Argentina.
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Roitman KL, Cipolla L, Minervini P, Prieto M. Study of the genetic diversity of Moraxella spp. isolates obtained from corneal abscesses. Rev Argent Microbiol 2023; 55:20-24. [PMID: 35915013 DOI: 10.1016/j.ram.2022.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 01/14/2022] [Accepted: 03/14/2022] [Indexed: 11/26/2022] Open
Abstract
This is the first study of the genetic diversity of Moraxella spp. Isolates were detected in an Eye Hospital in the City of Buenos Aires. Due to the high frequency of Moraxella spp. observed in corneal abscesses, we decided to validate their identification at the species level, determine their drug susceptibility and perform molecular subtyping. Seventeen (17) isolates obtained from corneal abscesses were evaluated. The identification was carried out using a combination of biochemical tests and MALDI-TOF mass spectrometry. Of these isolates, 88.2% were identified as Moraxella lacunata, and 11.8% as Moraxella nonliquefaciens. Molecular subtyping was performed using the pulsed-field gel electrophoresis (PFGE) technique. All isolates were typable and thirteen digestion patterns were identified. Based on the obtained results, the PFGE technique using the SmaI enzyme can be used for epidemiological studies of strains of these species.
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Affiliation(s)
- Karina L Roitman
- Residencia de Microbiología Clínica, Instituto Nacional de Enfermedades Infecciosas (INEI), Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) «Dr. Carlos G. Malbrán», Ciudad Autónoma de Buenos Aires, Argentina.
| | - Lucía Cipolla
- Servicio de Bacteriología Especial, Departamento de Bacteriología, Instituto Nacional de Enfermedades Infecciosas (INEI), Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) «Dr. Carlos G. Malbrán», Ciudad Autónoma de Buenos Aires, Argentina
| | | | - Mónica Prieto
- Servicio de Bacteriología Especial, Departamento de Bacteriología, Instituto Nacional de Enfermedades Infecciosas (INEI), Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) «Dr. Carlos G. Malbrán», Ciudad Autónoma de Buenos Aires, Argentina
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Ledesma M, Todero MF, Maceira L, Prieto M, Vay C, Galas M, López B, Yokobori N, Rearte B. Peptidome profiling for the immunological stratification in sepsis: a proof of concept study. Sci Rep 2022; 12:11469. [PMID: 35794460 PMCID: PMC9259554 DOI: 10.1038/s41598-022-15792-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 11/25/2021] [Accepted: 06/29/2022] [Indexed: 11/09/2022] Open
Abstract
Sepsis has been called the graveyard of pharmaceutical companies due to the numerous failed clinical trials. The lack of tools to monitor the immunological status in sepsis constrains the development of therapies. Here, we evaluated a test based on whole plasma peptidome acquired by MALDI-TOF-mass spectrometer and machine-learning algorithms to discriminate two lipopolysaccharide-(LPS) induced murine models emulating the pro- and anti-inflammatory/immunosuppression environments that can be found during sepsis. The LPS group was inoculated with a single high dose of LPS and the IS group was subjected to increasing doses of LPS, to induce proinflammatory and anti-inflammatory/immunosuppression profiles respectively. The LPS group showed leukopenia and higher levels of cytokines and tissue damage markers, and the IS group showed neutrophilia, lymphopenia and decreased humoral response. Principal component analysis of the plasma peptidomes formed discrete clusters that mostly coincided with the experimental groups. In addition, machine-learning algorithms discriminated the different experimental groups with a sensitivity of 95.7% and specificity of 90.9%. Data reveal the potential of plasma fingerprints analysis by MALDI-TOF-mass spectrometry as a simple, speedy and readily transferrable method for sepsis patient stratification that would contribute to therapeutic decision-making based on their immunological status.
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Affiliation(s)
- Martín Ledesma
- Laboratorio de Bacteriología, Departamento de Bioquímica Clínica, Hospital de Clínicas "José de San Martín", Facultad de Farmacia y Bioquímica, UBA, Av. Córdoba 2351, C1120, CABA, Argentina.,Consejo Nacional de Investigaciones Científicas Y Técnicas (CONICET), Godoy Cruz 2290, C1425FQB, CABA, Argentina
| | - María Florencia Todero
- Instituto de Medicina Experimental (IMEX) - CONICET - Academia Nacional de Medicina, Pacheco de Melo 3081, C1425AUM, CABA, Argentina
| | - Lautaro Maceira
- Instituto de Medicina Experimental (IMEX) - CONICET - Academia Nacional de Medicina, Pacheco de Melo 3081, C1425AUM, CABA, Argentina
| | - Mónica Prieto
- Servicio de Bacteriología Especial. Instituto Nacional de Enfermedades Infecciosas (INEI), ANLIS "Dr. C. G. Malbrán", Av. Vélez Sarsfield 563, C1282AFF, CABA, Argentina
| | - Carlos Vay
- Laboratorio de Bacteriología, Departamento de Bioquímica Clínica, Hospital de Clínicas "José de San Martín", Facultad de Farmacia y Bioquímica, UBA, Av. Córdoba 2351, C1120, CABA, Argentina
| | - Marcelo Galas
- Special Program of AMR, Communicable Diseases and Environmental Determinants of Health Department, Pan-American Health Organization, 525 23rd St NW, Washington, DC, 20037, USA
| | - Beatriz López
- Departamento de Bacteriología. INEI, ANLIS "Dr. C. G. Malbrán", Av. Vélez Sarsfield 563, C1282AFF, CABA, Argentina
| | - Noemí Yokobori
- Servicio de Micobacterias INEI, ANLIS "Dr. C. G. Malbrán", Av. Vélez Sarsfield 563, C1282AFF, CABA, Argentina.,Consejo Nacional de Investigaciones Científicas Y Técnicas (CONICET), Godoy Cruz 2290, C1425FQB, CABA, Argentina
| | - Bárbara Rearte
- Instituto de Medicina Experimental (IMEX) - CONICET - Academia Nacional de Medicina, Pacheco de Melo 3081, C1425AUM, CABA, Argentina. .,Consejo Nacional de Investigaciones Científicas Y Técnicas (CONICET), Godoy Cruz 2290, C1425FQB, CABA, Argentina.
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Prieto M, Carocca A, Fullerton C, Hidalgo A, Diaz J, San Martin P, Godoy M, Nuño M, De Leon A, Rodriguez J, Sanchez R, Batiz F, Castillo A, Cuellar-Barboza A, Biernacka J, Frye M. Clinical Correlates of Cardiac Conduction in Bipolar Disorder. Eur Psychiatry 2022. [PMCID: PMC9566191 DOI: 10.1192/j.eurpsy.2022.1019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction
Patients with bipolar disorder (BD) have an increased risk for cardiovascular morbimortality. Clinical risk factors, specifically for arrhythmias and sudden cardiac death remain understudied. Objectives This study was conducted to assess differences in cardiac conduction among BD patients. Methods We included patients with BD in a cross-sectional design, confirmed by structured interview, age 18 through 80. Clinical characteristics were obtained using a structured questionnaire or medical records review. ECG intervals duration and morphology were manually assessed by cardiologists and compared among clinical subgroups using Chi-square, Mann-Whitney, and Kruskall-Wallis tests. Exploratory multivariable linear and logistic regression models were fitted to adjust for potential confounders. Results We included 117 patients (60.7% women, 76.9% bipolar I, 50% history of psychosis, 22.6% suicide attempts). We found a significantly longer QTc interval in BD patients with hypertension (difference: 9.5 ms, p=0.006), obesity (difference: 25 ms, p=0.001), and metabolic syndrome (difference: 13 ms, p=0.007). Hypertension remained a significant predictor of longer QTc after adjusting for age, gender, and antipsychotic use (estimate 17.718, p=0.018). We observed a significantly shorter PR interval in women (difference: 6 ms, p=0.029), early age of onset (difference 6 ms, p=0.025), non-users of lithium (difference 4 ms, p=0.002), and early trauma (difference 4 ms, p=0.038). Finally, we identified significant correlations between symptom severity, blood glucose and PR interval (r=0.298, p=0.001; r=0.278, p=0.003; respectively). Conclusions Patients with BD and hypertension may have an increased risk for QTc prolongation. Careful cardiovascular monitoring may be warranted. Disclosure No significant relationships.
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Nievas J, Luz Ibañez M, Allende L, Altclas J, Antezana G, Campos J, Lorenzo F, Cipolla L, Prieto M. Emergence of Elizabethkingia anophelis. First case of E. anophelis outbreak in a neonatal unit of a hospital in Argentina. Clinical Infection in Practice 2022. [DOI: 10.1016/j.clinpr.2021.100122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Barcia V, Monfá E, de León B, Martinez-Rosero C, Sánchez-Montero S, Barnes C, Lucas C, Sastre A, Estifan J, Prieto M. Eliminando el concepto de enfermedad renal crónica no filiada: a propósito de 2 casos de nefropatía túbulo-intersticial autosómica dominante con variante patogénica MUC-1. Nefrologia 2022. [DOI: 10.1016/j.nefro.2022.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Prieto M. European Association of Nuclear Medicine - 35th Annual Congress. Barcelona - October 15-19, 2022. DRUG FUTURE 2022. [DOI: 10.1358/dof.2022.47.12.3521793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Gallo R, Tamborini AL, Di Bella H, Scarone N, Morante M, Prieto M, Casabona LM. [Actinotignum schaalii: Report of two cases of bacteremia in Argentina]. Rev Argent Microbiol 2021; 54:110-113. [PMID: 34903428 DOI: 10.1016/j.ram.2021.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 06/01/2021] [Accepted: 10/03/2021] [Indexed: 10/19/2022] Open
Abstract
Actinotignum schaalii is an emerging pathogen in elderly patients with urinary tract pathologies. Two cases of A. schaalii bacteremia are described. Case 1: 79-year-old patient with a history of benign prostatic hyperplasia. He was admitted to the ward for febrile syndrome, abdominal pain, and dysuria. Case 2: 95-year-old patient with prostatic adenomectomy, urethrostomy due to urethral stricture, and benign prostatic hyperplasia. He was admitted due to febrile syndrome, productive cough, bilateral infiltrates with right paracardiac image, and pleural effusion. In both patients, A. schaalii was isolated in blood cultures, identified by MALDITOF-MS mass spectrometry. Only in case 1 was it confirmed that the focus of bacteremia was urinary. It is important to suspect this emerging pathogen in urinary infections with pathological sediment without developing in traditional culture media to ensure adequate empirical treatment. Since most of the isolates show resistance to ciprofloxacin and trimethoprim-sulfamethoxazole.
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Affiliation(s)
- Romina Gallo
- Servicio de Bacteriología, Hospital Dr. Lucio Molas, Santa Rosa, La Pampa, Argentina.
| | - Ana Lis Tamborini
- Servicio de Bacteriología, Hospital Dr. Lucio Molas, Santa Rosa, La Pampa, Argentina
| | - Horacio Di Bella
- Servicio de Bacteriología, Hospital Dr. Lucio Molas, Santa Rosa, La Pampa, Argentina
| | - Nahuel Scarone
- Servicio de Bacteriología, Hospital Dr. Lucio Molas, Santa Rosa, La Pampa, Argentina
| | - Martín Morante
- Grupo Integral Clínico Cardiológico (GICC prevención), Santa Rosa, La Pampa, Argentina
| | - Mónica Prieto
- Servicio de Bacteriología Especial, INEI-ANLIS «Dr. Carlos G. Malbrán», Buenos Aires, Argentina
| | - Luis Marcelo Casabona
- Servicio de Bacteriología, Hospital Dr. Lucio Molas, Santa Rosa, La Pampa, Argentina
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Tascon J, Casanova A, Jim譥z-Lozano S, Vicente-Vicente L, Pescador M, Prieto M, Morales A. Kidney damage associated with tobacco consumption. Role of oxidative stress. Toxicol Lett 2021. [DOI: 10.1016/s0378-4274(21)00587-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Casanova A, Martín-Reina J, Vicente-Vicente L, Tascón J, Prieto M, Pescador M, Bautista J, Moreno I, Morales A. Pesticide exposure and risk of early kidney damage. Toxicol Lett 2021. [DOI: 10.1016/s0378-4274(21)00721-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Brusa V, Prieto M, Campos C, Epszteyn S, Cuesta A, Renaud V, Schembri G, Vanzini M, Michanie S, Leotta G, Signorini M. Quantitative risk assessment of listeriosis associated with fermented sausage and dry-cured pork shoulder consumption in Argentina. Food Control 2021. [DOI: 10.1016/j.foodcont.2020.107705] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Prieto M. 33rd Annual Congress of the European Association of Nuclear Medicine (EANM). Virtual - October 22-30, 2020. DRUG FUTURE 2021. [DOI: 10.1358/dof.2021.46.1.3261947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Fiamanya S, Cipolla L, Prieto M, Stelling J. Exploring the value of MALDI-TOF MS for the detection of clonal outbreaks of Burkholderia contaminans. J Microbiol Methods 2020; 181:106130. [PMID: 33383044 DOI: 10.1016/j.mimet.2020.106130] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 12/20/2020] [Accepted: 12/21/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND Molecular genetics has risen in both output and affordability to become the gold standard in diagnosis, however it is not yet available for most routine clinical microbiology due to cost and the level of skill it requires. Matrix assisted laser desorption/ionisation - time of flight mass spectrometry (MALDI-TOF MS) approaches may be useful in bridging the gap between low-resolution phenotypic methods and bulky genotypic methods in the goal of epidemiological source-typing of microbes. Burkholderia has been shown to be identifiable at the subspecies level using MALDI-TOF MS. There have not yet been studies assessing the ability of MALDI-TOF MS to source-type Burkholderia contaminans isolates into epidemiologically relevant outbreak clusters. METHODS 55 well-characterised B. contaminans isolates were used to create a panel for analysis of MALDI-TOF MS biomarker peaks and their relation to outbreak strains, location, source, patient, diagnosis and isolate genetics. Unsupervised clustering was performed and classification models were generated using biostatistical analysis software. RESULTS B. contaminans spectra derived from MALDI-TOF MS were of sufficiently high resolution to identify 100% of isolates. Unsupervised clustering methods showed poor evidence of spectra clustering by all characteristics measured. Classification algorithms were discriminatory, with Genetic Algorithm models showing 100% recognition capability for all outbreaks, the pulsed-field gel electrophoresis (PFGE) typeability model, and 96.63% recognition for the location model. A consistent peak at m/z of approximately 6943 was identified in all non-typeable strains but in none of the typeable strains. CONCLUSIONS MALDI-TOF MS successfully discriminates B. contaminans isolates into clonal, epidemiological clusters, and can recognise isolates non-typeable by PFGE. Further work should investigate this capability, and include peptide studies and genomic sequencing to identify individual proteins or genes responsible for this non-typeablity, particularly at the peak weight identified.
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Affiliation(s)
- Selali Fiamanya
- Oxford University Clinical Academic Graduate School, John Radcliffe Hospital, Oxford OX3 9DU, United Kingdom.
| | - Lucía Cipolla
- Servicio Bacteriología Especial, Instituto Nacional de Enfermedades Infecciosas 'Dr. C. G. Malbrán', Av Velez Sarsfield 563, 1281 Ciudad Autónoma de Buenos Aires, Argentina
| | - Mónica Prieto
- Servicio Bacteriología Especial, Instituto Nacional de Enfermedades Infecciosas 'Dr. C. G. Malbrán', Av Velez Sarsfield 563, 1281 Ciudad Autónoma de Buenos Aires, Argentina
| | - John Stelling
- Department of Medicine, Division of Infectious Diseases, Brigham and Women's Hospital, 75 Francis Street, Boston, MA 02115, USA; Department of Medicine, Harvard Medical School 25 Shattuck Street, Boston, MA 02115, USA
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Del Hoyo J, López‐Muñoz P, Fernández‐de la Varga M, Garrido‐Marín A, Valero‐Pérez E, Prieto M, Aguilera V. Hepatobiliary and Pancreatic: A fatal case of extensive splanchnic vein thrombosis in a patient with Covid-19. J Gastroenterol Hepatol 2020; 35:1853. [PMID: 32839984 PMCID: PMC7461433 DOI: 10.1111/jgh.15174] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 06/23/2020] [Accepted: 06/28/2020] [Indexed: 12/29/2022]
Affiliation(s)
- J Del Hoyo
- Hepatology and Liver Transplant Section, Department of Digestive MedicineLa Fe University and Polytechnic Hospital
| | - P López‐Muñoz
- Hepatology and Liver Transplant Section, Department of Digestive MedicineLa Fe University and Polytechnic Hospital
| | - M Fernández‐de la Varga
- Hepatology and Liver Transplant Section, Department of Digestive MedicineLa Fe University and Polytechnic Hospital
| | - A Garrido‐Marín
- Hepatology and Liver Transplant Section, Department of Digestive MedicineLa Fe University and Polytechnic Hospital
| | - E Valero‐Pérez
- Hepatology and Liver Transplant Section, Department of Digestive MedicineLa Fe University and Polytechnic Hospital
| | - M Prieto
- Hepatology and Liver Transplant Section, Department of Digestive MedicineLa Fe University and Polytechnic Hospital,Network Center for Biomedical Research in Hepatic and Digestive DiseasesInstituto de Salud Carlos IIIMadridSpain
| | - V Aguilera
- Hepatology and Liver Transplant Section, Department of Digestive MedicineLa Fe University and Polytechnic Hospital,Network Center for Biomedical Research in Hepatic and Digestive DiseasesInstituto de Salud Carlos IIIMadridSpain
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Rocca MF, Zintgraff JC, Dattero ME, Santos LS, Ledesma M, Vay C, Prieto M, Benedetti E, Avaro M, Russo M, Nachtigall FM, Baumeister E. A combined approach of MALDI-TOF mass spectrometry and multivariate analysis as a potential tool for the detection of SARS-CoV-2 virus in nasopharyngeal swabs. J Virol Methods 2020; 286:113991. [PMID: 33045283 PMCID: PMC7546642 DOI: 10.1016/j.jviromet.2020.113991] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [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: 05/08/2020] [Revised: 10/06/2020] [Accepted: 10/06/2020] [Indexed: 01/08/2023]
Abstract
This study with MALDI-TOF comprises, as far as we know, the first report describing the performance of this technology with COVID-19 diagnosis. This work would encourage researchers to explore the potential of MALDI-TOF MS to assess the feasibility of this technology, as a rapid and reproducible screening tool for diagnosis of SARS-CoV-2. According to our preliminary results, mass spectrometry-based methods combined with multivariate analysis showed potential as a complementary diagnostic tool.
Coronavirus disease 2019, known as COVID-19, is caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The early, sensitive and specific detection of SARS-CoV-2 virus is widely recognized as the critical point in responding to the ongoing outbreak. Currently, the diagnosis is based on molecular real time RT-PCR techniques, although their implementation is being threatened due to the extraordinary demand for supplies worldwide. That is why the development of alternative and / or complementary tests becomes so relevant. Here, we exploit the potential of mass spectrometry technology combined with machine learning algorithms, for the detection of COVID-19 positive and negative protein profiles directly from nasopharyngeal swabs samples. According to the preliminary results obtained, accuracy = 67.66 %, sensitivity = 61.76 %, specificity = 71.72 %, and although these parameters still need to be improved to be used as a screening technique, mass spectrometry-based methods coupled with multivariate analysis showed that it is an interesting tool that deserves to be explored as a complementary diagnostic approach due to the low cost and fast performance. However, further steps, such as the analysis of a large number of samples, should be taken in consideration to determine the applicability of the method developed.
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Affiliation(s)
- María Florencia Rocca
- Instituto Nacional de Enfermedades Infecciosas (INEI) - Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) "Dr. Carlos G. Malbrán", Ciudad Autónoma de Buenos Aires, Argentina; Red Nacional de Espectrometría de Masas aplicada a la Microbiología Clínica (ReNaEM Argentina), Argentina.
| | - Jonathan Cristian Zintgraff
- Instituto Nacional de Enfermedades Infecciosas (INEI) - Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) "Dr. Carlos G. Malbrán", Ciudad Autónoma de Buenos Aires, Argentina; Red Nacional de Espectrometría de Masas aplicada a la Microbiología Clínica (ReNaEM Argentina), Argentina
| | - María Elena Dattero
- Servicio de Virosis respiratorias, Centro Nacional de Influenza de OMS, Laboratorio Nacional de Referencia de Enfermedades Respiratorias Virales del Ministerio de Salud, Departamento de Virología, Instituto Nacional de Enfermedades Infecciosas (INEI) -Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) "Dr. Carlos G. Malbrán", Ciudad Autónoma de Buenos Aires, Argentina
| | - Leonardo Silva Santos
- Instituto de Química de Recursos Naturales, Universidad de Talca, Talca 3460000, Chile
| | - Martín Ledesma
- Red Nacional de Espectrometría de Masas aplicada a la Microbiología Clínica (ReNaEM Argentina), Argentina; Laboratorio de Bacteriología, Departamento de Bioquímica Clínica, Hospital de Clínicas José de San Martín, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina; CONICET, Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina
| | - Carlos Vay
- Red Nacional de Espectrometría de Masas aplicada a la Microbiología Clínica (ReNaEM Argentina), Argentina; Laboratorio de Bacteriología, Departamento de Bioquímica Clínica, Hospital de Clínicas José de San Martín, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Mónica Prieto
- Instituto Nacional de Enfermedades Infecciosas (INEI) - Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) "Dr. Carlos G. Malbrán", Ciudad Autónoma de Buenos Aires, Argentina; Red Nacional de Espectrometría de Masas aplicada a la Microbiología Clínica (ReNaEM Argentina), Argentina
| | - Estefanía Benedetti
- Servicio de Virosis respiratorias, Centro Nacional de Influenza de OMS, Laboratorio Nacional de Referencia de Enfermedades Respiratorias Virales del Ministerio de Salud, Departamento de Virología, Instituto Nacional de Enfermedades Infecciosas (INEI) -Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) "Dr. Carlos G. Malbrán", Ciudad Autónoma de Buenos Aires, Argentina
| | - Martín Avaro
- Servicio de Virosis respiratorias, Centro Nacional de Influenza de OMS, Laboratorio Nacional de Referencia de Enfermedades Respiratorias Virales del Ministerio de Salud, Departamento de Virología, Instituto Nacional de Enfermedades Infecciosas (INEI) -Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) "Dr. Carlos G. Malbrán", Ciudad Autónoma de Buenos Aires, Argentina
| | - Mara Russo
- Servicio de Virosis respiratorias, Centro Nacional de Influenza de OMS, Laboratorio Nacional de Referencia de Enfermedades Respiratorias Virales del Ministerio de Salud, Departamento de Virología, Instituto Nacional de Enfermedades Infecciosas (INEI) -Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) "Dr. Carlos G. Malbrán", Ciudad Autónoma de Buenos Aires, Argentina
| | | | - Elsa Baumeister
- Servicio de Virosis respiratorias, Centro Nacional de Influenza de OMS, Laboratorio Nacional de Referencia de Enfermedades Respiratorias Virales del Ministerio de Salud, Departamento de Virología, Instituto Nacional de Enfermedades Infecciosas (INEI) -Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) "Dr. Carlos G. Malbrán", Ciudad Autónoma de Buenos Aires, Argentina
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Louro J, Román M, Posso M, Vidal C, Prieto M, Saladié F, Baré M, Sánchez M, Quintana M, Bargalló X, Ferrer J, Peñalva L, Sala M, Castells X. Differences in breast cancer risk after a benign breast disease according to the screening type. Eur J Cancer 2020. [DOI: 10.1016/s0959-8049(20)30552-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Ventura A, Varela A, Dingjan T, Santos T, Fedorov A, Futerman A, Prieto M, Silva L. Lipid domain formation and membrane shaping by C24-ceramide. Biochimica et Biophysica Acta (BBA) - Biomembranes 2020; 1862:183400. [DOI: 10.1016/j.bbamem.2020.183400] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 06/05/2020] [Accepted: 06/15/2020] [Indexed: 01/29/2023]
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20
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Gagetti P, Pasteran F, Ceriana P, Prieto M, Cipolla L, Tuduri E, Bruinsma N, Galas M, Ramón-Pardo P, Corso A. [Evolution of the performance of Latin America Reference Laboratories in the detection of mechanisms of antimicrobial resistanceEvolução do desempenho dos Laboratórios de Referência na América Latina na detecção de mecanismos de resistência antimicrobiana]. Rev Panam Salud Publica 2020; 44:e42. [PMID: 32973896 PMCID: PMC7498281 DOI: 10.26633/rpsp.2020.42] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 02/28/2019] [Indexed: 11/24/2022] Open
Abstract
Objective The objective is to present the results of the Latin American Program for Quality Assurance in Bacteriology and Antimicrobial Resistance (LA-EQAS) between 2000 and 2018 and the evolution of the detection of resistance mechanisms with clinical impact. Methods The participating National Reference Laboratories (NRLs) received 25 surveys with 10 strains in each one, representing a total of 86 bacterial species and 40 resistance mechanisms. To evaluate the performance of the NRLs, five indicators were analyzed: bacterial identification, interpretation of susceptibility testing, acceptable ranges for zones of inhibition, inferred resistance mechanism, and delay time for the response. Results The average concordance was 82.6% (range: 74-95%) for bacterial identification, 93.3% (85-98%) for the interpretation of susceptibility testing, 84.6% (70-94%) for the zones of inhibition, and 82.5% (73-96%) for the inferred resistance mechanisms. The average delay time for the response was 34 days. Improvements in the detection of mechanisms of clinical importance, such as resistance to methicillin, macrolides and glycopeptides in Gram-positive cocci, and extended-spectrum, AmpC plasmid and carbapenemase beta-lactamases in Gram-negative bacilli, were observed. Conclusions The LA-EQAS is an excellent tool for continuous quality improvement in the diagnosis of infections due to multiresistant microorganisms in NRLs in Latin America.
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Affiliation(s)
- Paula Gagetti
- Servicio Antimicrobianos, Laboratorio Nacional/Regional de Referencia en Resistencia a los Antimicrobianos, INEI-ANLIS "Dr. Carlos G. Malbrán" Buenos Aires Argentina Servicio Antimicrobianos, Laboratorio Nacional/Regional de Referencia en Resistencia a los Antimicrobianos, INEI-ANLIS "Dr. Carlos G. Malbrán", Buenos Aires, Argentina
| | - Fernando Pasteran
- Servicio Antimicrobianos, Laboratorio Nacional/Regional de Referencia en Resistencia a los Antimicrobianos, INEI-ANLIS "Dr. Carlos G. Malbrán" Buenos Aires Argentina Servicio Antimicrobianos, Laboratorio Nacional/Regional de Referencia en Resistencia a los Antimicrobianos, INEI-ANLIS "Dr. Carlos G. Malbrán", Buenos Aires, Argentina
| | - Paola Ceriana
- Servicio Antimicrobianos, Laboratorio Nacional/Regional de Referencia en Resistencia a los Antimicrobianos, INEI-ANLIS "Dr. Carlos G. Malbrán" Buenos Aires Argentina Servicio Antimicrobianos, Laboratorio Nacional/Regional de Referencia en Resistencia a los Antimicrobianos, INEI-ANLIS "Dr. Carlos G. Malbrán", Buenos Aires, Argentina
| | - Mónica Prieto
- Servicio Bacteriología Especial, INEI-ANLIS "Dr. Carlos G. Malbrán" Buenos Aires Argentina Servicio Bacteriología Especial, INEI-ANLIS "Dr. Carlos G. Malbrán", Buenos Aires, Argentina
| | - Lucía Cipolla
- Servicio Bacteriología Especial, INEI-ANLIS "Dr. Carlos G. Malbrán" Buenos Aires Argentina Servicio Bacteriología Especial, INEI-ANLIS "Dr. Carlos G. Malbrán", Buenos Aires, Argentina
| | - Ezequiel Tuduri
- Servicio Antimicrobianos, Laboratorio Nacional/Regional de Referencia en Resistencia a los Antimicrobianos, INEI-ANLIS "Dr. Carlos G. Malbrán" Buenos Aires Argentina Servicio Antimicrobianos, Laboratorio Nacional/Regional de Referencia en Resistencia a los Antimicrobianos, INEI-ANLIS "Dr. Carlos G. Malbrán", Buenos Aires, Argentina
| | - Nienke Bruinsma
- Antimicrobial Resistance Program, Communicable Diseases and Environmental Determinants of Health, Pan American Health Organization WashingtonDC United States Antimicrobial Resistance Program, Communicable Diseases and Environmental Determinants of Health, Pan American Health Organization, Washington, DC, United States
| | - Marcelo Galas
- Antimicrobial Resistance Program, Communicable Diseases and Environmental Determinants of Health, Pan American Health Organization WashingtonDC United States Antimicrobial Resistance Program, Communicable Diseases and Environmental Determinants of Health, Pan American Health Organization, Washington, DC, United States
| | - Pilar Ramón-Pardo
- Antimicrobial Resistance Program, Communicable Diseases and Environmental Determinants of Health, Pan American Health Organization WashingtonDC United States Antimicrobial Resistance Program, Communicable Diseases and Environmental Determinants of Health, Pan American Health Organization, Washington, DC, United States
| | | | - A Corso
- Servicio Antimicrobianos, Laboratorio Nacional/Regional de Referencia en Resistencia a los Antimicrobianos, INEI-ANLIS "Dr. Carlos G. Malbrán" Buenos Aires Argentina Servicio Antimicrobianos, Laboratorio Nacional/Regional de Referencia en Resistencia a los Antimicrobianos, INEI-ANLIS "Dr. Carlos G. Malbrán", Buenos Aires, Argentina
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Iglesias-Parro S, Soriano MF, Prieto M, Rodríguez I, Aznarte JI, Ibáñez-Molina AJ. Introspective and Neurophysiological Measures of Mind Wandering in Schizophrenia. Sci Rep 2020; 10:4833. [PMID: 32179815 PMCID: PMC7076020 DOI: 10.1038/s41598-020-61843-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [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: 11/05/2019] [Accepted: 03/04/2020] [Indexed: 01/26/2023] Open
Abstract
Patients with schizophrenia have often been considered to be “in their own world”. However, this casual observation has not been proven by scientific evidence so far. This can be explained because scientific research has usually addressed cognition related to the processing of external stimuli, but only recently have efforts been made to explain thoughts, images and feelings not directly related to the external environment. This internally directed cognition has been called mind wandering. In this paper, we have explored mind wandering in schizophrenia under the hypothesis that a predominance of mind wandering would be a core dysfunction in this disorder. To this end, we collected verbal reports and measured electrophysiological signals from patients with schizophrenia spectrum disorders and matched healthy controls while they were presented with segments of films. The results showed that mind wandering was more frequent in patients than in controls. This higher frequency of mind wandering did not correlate with deficits in attentional, memory or executive functioning. In addition, mind wandering in patients was characterized by a different pattern of Electroencephalography (EEG) complexity in patients than in controls, leading to the suggestion that mind wandering in schizophrenia could be of a different nature. These findings could have relevant implications for the conceptualization of this severe mental disorder.
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Affiliation(s)
| | - M F Soriano
- Mental Health Unit, St. Agustín Universitary Hospital, Linares, Jaén, Spain
| | - M Prieto
- Psychology Department, University of Jaén, Jaén, Spain
| | - I Rodríguez
- Psychology Department, University of Jaén, Jaén, Spain
| | - J I Aznarte
- Mental Health Unit, St. Agustín Universitary Hospital, Linares, Jaén, Spain
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22
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Hurtado P, Prieto M, Martínez-Vilalta J, Giordani P, Aragón G, López-Angulo J, Košuthová A, Merinero S, Díaz-Peña EM, Rosas T, Benesperi R, Bianchi E, Grube M, Mayrhofer H, Nascimbene J, Wedin M, Westberg M, Martínez I. Disentangling functional trait variation and covariation in epiphytic lichens along a continent-wide latitudinal gradient. Proc Biol Sci 2020; 287:20192862. [PMID: 32156209 PMCID: PMC7126072 DOI: 10.1098/rspb.2019.2862] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 02/17/2020] [Indexed: 11/12/2022] Open
Abstract
Characterizing functional trait variation and covariation, and its drivers, is critical to understand the response of species to changing environmental conditions. Evolutionary and environmental factors determine how traits vary among and within species at multiple scales. However, disentangling their relative contribution is challenging and a comprehensive trait-environment framework addressing such questions is missing in lichens. We investigated the variation in nine traits related to photosynthetic performance, water use and nutrient acquisition applying phylogenetic comparative analyses in lichen epiphytic communities on beech across Europe. These poikilohydric organisms offer a valuable model owing to their inherent limitations to buffer contrasting environmental conditions. Photobiont type and growth form captured differences in certain physiological traits whose variation was largely determined by evolutionary processes (i.e. phylogenetic history), although the intraspecific component was non-negligible. Seasonal temperature fluctuations also had an impact on trait variation, while nitrogen content depended on photobiont type rather than nitrogen deposition. The inconsistency of trait covariation among and within species prevented establishing major resource use strategies in lichens. However, we did identify a general pattern related to the water-use strategy. Thus, to robustly unveil lichen responses under different climatic scenarios, it is necessary to incorporate both among and within-species trait variation and covariation.
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Affiliation(s)
- P. Hurtado
- Área de Biodiversidad y Conservación, Departmento de Biología y Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, Móstoles, Madrid, Spain
| | - M. Prieto
- Área de Biodiversidad y Conservación, Departmento de Biología y Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, Móstoles, Madrid, Spain
| | | | | | - G. Aragón
- Área de Biodiversidad y Conservación, Departmento de Biología y Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, Móstoles, Madrid, Spain
| | - J. López-Angulo
- Área de Biodiversidad y Conservación, Departmento de Biología y Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, Móstoles, Madrid, Spain
| | - A. Košuthová
- Department of Botany, Swedish Museum of Natural History, Stockholm, Sweden
- Institute of Botany, Plant Science and Biodiversity Center, Slovak Academy of Sciences, Bratislava, Slovak Republic
| | - S. Merinero
- Área de Biodiversidad y Conservación, Departmento de Biología y Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, Móstoles, Madrid, Spain
- Department of Ecology, Environment and Plant Sciences, Stockholm University, Stockholm, Sweden
| | - E. M. Díaz-Peña
- Área de Biodiversidad y Conservación, Departmento de Biología y Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, Móstoles, Madrid, Spain
| | - T. Rosas
- CREAF, Bellaterra (Cerdanyola del Valles), Catalonia, Spain
| | - R. Benesperi
- Department of Biology, University of Florence, Firenze, Italy
| | - E. Bianchi
- Department of Biology, University of Florence, Firenze, Italy
| | - M. Grube
- Institute of Biology, Karl-Franzens-Universität Graz, Graz, Austria
| | - H. Mayrhofer
- Institute of Biology, Karl-Franzens-Universität Graz, Graz, Austria
| | - J. Nascimbene
- Department of Biological, Geological and Environmental Sciences, University of Bologna, Bologna, Italy
| | - M. Wedin
- Department of Botany, Swedish Museum of Natural History, Stockholm, Sweden
| | - M. Westberg
- Museum of Evolution, Uppsala University, Uppsala, Sweden
| | - I. Martínez
- Área de Biodiversidad y Conservación, Departmento de Biología y Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, Móstoles, Madrid, Spain
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Zintgraff J, Prieto M, Peña M, Simoiz F, Rosenblit S, D'Alessandro D, Garces AF, Di Matteo V, Astesana R, Panno M. When reporting Nocardia spp is not enough. Brain abscess caused by Nocardia farcinica. Access Microbiol 2020; 2:acmi000091. [PMID: 34568754 PMCID: PMC8459103 DOI: 10.1099/acmi.0.000091] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 12/19/2019] [Indexed: 11/18/2022] Open
Abstract
Abscesses caused by the genus Nocardia spp are relatively rare, accounting for approximately 2 % of all brain abscesses, but with a significantly higher mortality. Special stains of brain abscess material from a 60-year-old man showed Gram-positive branching bacilli and the presence of long, acid-fast branching filamentous bacilli suggesting Nocardia infection. Presented here is a case of multidisciplinary management of a patient who developed cerebral abscesses by Nocardia farcinica, confirmed by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS), that was susceptible to trimethoprim/sulfamethoxazole, linezolid, imipenem and not susceptible to minocycline. This case highlights the importance of performing subtyping and antimicrobial testing in order to improve clinical and treatment outcomes due to patterns of antibiotics resistance among Nocardia species.
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Affiliation(s)
- J Zintgraff
- Servicio de Bacteriología. Clínica AMEBPBA, CABA, Argentina.,Servicio de Bacteriología Clínica. INEI ANLIS "Dr Carlos G. Malbrán", CABA, Argentina
| | - M Prieto
- Servicio de Bacteriología Especial. INEI ANLIS "Dr Carlos G. Malbrán", CABA, Argentina
| | - M Peña
- Servicio de Bacteriología. Clínica AMEBPBA, CABA, Argentina
| | - F Simoiz
- Servicio de Clínica Médica - Clínica AMEBPBA, CABA, Argentina
| | - S Rosenblit
- Servicio de Clínica Médica - Clínica AMEBPBA, CABA, Argentina
| | - D D'Alessandro
- Servicio de Infectología - Clínica AMEBPBA, CABA, Argentina
| | | | - V Di Matteo
- Servicio de Bacteriología. Clínica AMEBPBA, CABA, Argentina
| | - R Astesana
- Coordinador de Laboratorio - Clínica AMEBPBA, CABA, Argentina
| | - M Panno
- Dirección Médica- Clínica AMEBPBA, CABA, Argentina
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Rocca MF, Almuzara M, Barberis C, Vay C, Viñes P, Prieto M. Presentación del sitio web de la Red Nacional de Identificación Microbiológica por Espectrometría de Masas. Manual para la interpretación de resultados de MALDI-TOF MS. Rev Argent Microbiol 2020; 52:83-84. [DOI: 10.1016/j.ram.2019.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 03/05/2019] [Accepted: 03/13/2019] [Indexed: 10/26/2022] Open
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Margineda CA, O'Toole D, Prieto M, Uzal FA, Zielinski GC. Histophilus somni myocarditis and leptomeningitis in feedlot cattle: case report and occurrence in South America. J Vet Diagn Invest 2019; 31:893-898. [PMID: 31646958 DOI: 10.1177/1040638719876302] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
We investigated deaths in a group of feedlot steers in Argentina. The main findings in 3 steers autopsied were pulmonary congestion and edema, necrotizing myocarditis, pericarditis, suppurative leptomeningitis, and bronchopneumonia. Histophilus somni was detected by bacterial culture and immunohistochemistry in the hearts of the 3 animals. Partial sequences of the 16S rRNA gene of a H. somni isolate had 99% similarity with other H. somni sequences in GenBank. Most reports of H. somni septicemia in cattle originate from North America and western Europe. There is scant information about cardiac histophilosis in South America. A survey of diagnostic laboratory personnel in 7 South American countries documented various forms of bovine histophilosis in Argentina, Brazil, Uruguay, and Venezuela.
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Affiliation(s)
- Carlos A Margineda
- Laboratorio de Patología y Bacteriología, Estación Experimental Agropecuaria Marcos Juárez, INTA, Córdoba, Argentina (Margineda, Zielinski).,Enfermedades Infecciosas, Facultad de Ciencias Veterinarias, Universidad Nacional de Rosario, Santa Fe, Argentina (Margineda, Zielinski).,Wyoming State Veterinary Laboratory, Department of Veterinary Sciences, University of Wyoming, Laramie, WY (O'Toole).,Laboratorio de Bacteriología Especial, Instituto Nacional de Enfermedades Infecciosas, ANLIS "Dr. Carlos Malbran", Buenos Aires, Argentina (Prieto).,California Animal Health and Food Safety Laboratory, San Bernardino Branch, University of California-Davis, Davis, CA (Uzal)
| | - Donal O'Toole
- Laboratorio de Patología y Bacteriología, Estación Experimental Agropecuaria Marcos Juárez, INTA, Córdoba, Argentina (Margineda, Zielinski).,Enfermedades Infecciosas, Facultad de Ciencias Veterinarias, Universidad Nacional de Rosario, Santa Fe, Argentina (Margineda, Zielinski).,Wyoming State Veterinary Laboratory, Department of Veterinary Sciences, University of Wyoming, Laramie, WY (O'Toole).,Laboratorio de Bacteriología Especial, Instituto Nacional de Enfermedades Infecciosas, ANLIS "Dr. Carlos Malbran", Buenos Aires, Argentina (Prieto).,California Animal Health and Food Safety Laboratory, San Bernardino Branch, University of California-Davis, Davis, CA (Uzal)
| | - Mónica Prieto
- Laboratorio de Patología y Bacteriología, Estación Experimental Agropecuaria Marcos Juárez, INTA, Córdoba, Argentina (Margineda, Zielinski).,Enfermedades Infecciosas, Facultad de Ciencias Veterinarias, Universidad Nacional de Rosario, Santa Fe, Argentina (Margineda, Zielinski).,Wyoming State Veterinary Laboratory, Department of Veterinary Sciences, University of Wyoming, Laramie, WY (O'Toole).,Laboratorio de Bacteriología Especial, Instituto Nacional de Enfermedades Infecciosas, ANLIS "Dr. Carlos Malbran", Buenos Aires, Argentina (Prieto).,California Animal Health and Food Safety Laboratory, San Bernardino Branch, University of California-Davis, Davis, CA (Uzal)
| | - Francisco A Uzal
- Laboratorio de Patología y Bacteriología, Estación Experimental Agropecuaria Marcos Juárez, INTA, Córdoba, Argentina (Margineda, Zielinski).,Enfermedades Infecciosas, Facultad de Ciencias Veterinarias, Universidad Nacional de Rosario, Santa Fe, Argentina (Margineda, Zielinski).,Wyoming State Veterinary Laboratory, Department of Veterinary Sciences, University of Wyoming, Laramie, WY (O'Toole).,Laboratorio de Bacteriología Especial, Instituto Nacional de Enfermedades Infecciosas, ANLIS "Dr. Carlos Malbran", Buenos Aires, Argentina (Prieto).,California Animal Health and Food Safety Laboratory, San Bernardino Branch, University of California-Davis, Davis, CA (Uzal)
| | - Gustavo C Zielinski
- Laboratorio de Patología y Bacteriología, Estación Experimental Agropecuaria Marcos Juárez, INTA, Córdoba, Argentina (Margineda, Zielinski).,Enfermedades Infecciosas, Facultad de Ciencias Veterinarias, Universidad Nacional de Rosario, Santa Fe, Argentina (Margineda, Zielinski).,Wyoming State Veterinary Laboratory, Department of Veterinary Sciences, University of Wyoming, Laramie, WY (O'Toole).,Laboratorio de Bacteriología Especial, Instituto Nacional de Enfermedades Infecciosas, ANLIS "Dr. Carlos Malbran", Buenos Aires, Argentina (Prieto).,California Animal Health and Food Safety Laboratory, San Bernardino Branch, University of California-Davis, Davis, CA (Uzal)
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Cardós JLH, Prieto M, Jylhä M, Aragón G, Molina MC, Martínez I, Rikkinen J. A case study on the re-establishment of the cyanolichen symbiosis: where do the compatible photobionts come from? Ann Bot 2019; 124:379-388. [PMID: 31329832 PMCID: PMC6798828 DOI: 10.1093/aob/mcz052] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Accepted: 03/19/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND AND AIMS In order to re-establish lichen symbiosis, fungal spores must first germinate and then associate with a compatible photobiont. To detect possible establishment limitations in a sexually reproducing cyanolichen species, we studied ascospore germination, photobiont growth and photobiont association patterns in Pectenia plumbea. METHODS Germination tests were made with ascospores from 500 apothecia under different treatments, and photobiont growth was analysed in 192 isolates obtained from 24 thalli. We determined the genotype identity [tRNALeu (UAA) intron] of the Nostoc cyanobionts from 30 P. plumbea thalli from one population. We also sequenced cyanobionts of 41 specimens of other cyanolichen species and 58 Nostoc free-living colonies cultured from the bark substrate. KEY RESULTS Not a single fungal ascospore germinated and none of the photobiont isolates produced motile hormogonia. Genetic analyses revealed that P. plumbea shares Nostoc genotypes with two other cyanolichen species of the same habitat, but these photobionts were hardly present in the bark substrate. CONCLUSIONS Due to the inability of both symbionts to thrive independently, the establishment of P. plumbea seems to depend on Dendriscocaulon umhausense, the only cyanolichen species in the same habitat that reproduces asexually and acts as a source of appropriate cyanobionts. This provides support to the hypothesis about facilitation among lichens.
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Affiliation(s)
- J L H Cardós
- Área de Biodiversidad y Conservación, ESCET, Universidad Rey Juan Carlos, Móstoles, Madrid, Spain
| | - M Prieto
- Área de Biodiversidad y Conservación, ESCET, Universidad Rey Juan Carlos, Móstoles, Madrid, Spain
| | - M Jylhä
- Department of Biology and Geology, Physics and Inorganic Chemistry, Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Finland
| | - G Aragón
- Área de Biodiversidad y Conservación, ESCET, Universidad Rey Juan Carlos, Móstoles, Madrid, Spain
| | - M C Molina
- Área de Biodiversidad y Conservación, ESCET, Universidad Rey Juan Carlos, Móstoles, Madrid, Spain
| | - I Martínez
- Área de Biodiversidad y Conservación, ESCET, Universidad Rey Juan Carlos, Móstoles, Madrid, Spain
| | - J Rikkinen
- Department of Biology and Geology, Physics and Inorganic Chemistry, Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Finland
- Finnish Museum of Natural History, University of Helsinki, Finland
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Londero A, Costa M, Galli L, Brusa V, Linares L, Prieto M, Leotta G. Characterization and subtyping of Listeria monocytogenes strains from butcher shops. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2019.108363] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Kosteria I, Schwandt A, Davis E, Jali S, Prieto M, Rottembourg D. Lipid profile is associated with treatment regimen in a large cohort of children and adolescents with Type 1 diabetes mellitus: a study from the international SWEET database. Diabet Med 2019; 36:1294-1303. [PMID: 30972800 DOI: 10.1111/dme.13963] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/08/2019] [Indexed: 12/15/2022]
Abstract
AIMS To examine the effect of pump vs injection therapy on the lipid profile of children with Type 1 diabetes mellitus. METHODS A cross-sectional analysis of the lipid profile of children aged ≤ 18 years with Type 1 diabetes mellitus from SWEET, an international diabetes registry, was conducted with a focus on the effect of treatment regimen. Dyslipidaemia was defined as LDL cholesterol ≥2.6 mmol/l or non-HDL cholesterol ≥3.1 mmol/l. LDL and non-HDL cholesterol values among 14 290 children (52% boys, 51% receiving pump therapy) from 60 SWEET centres were analysed by linear and logistic regression analysis adjusted for sex, age, diabetes duration, HbA1c and BMI-standard deviation score group, region, and common interactions between age, sex, HbA1c and BMI. RESULTS This study confirmed the established associations of increased lipids with female sex, age, diabetes duration, HbA1c and BMI. LDL and non-HDL cholesterol levels were lower in the pump therapy group compared to the injection therapy group [LDL cholesterol: injection therapy 2.44 mmol/l (95% CI 2.42 to 2.46) vs pump therapy 2.39 mmol/l (95% CI 2.37-2.41), P<0.001; non-HDL cholesterol: injection therapy 2.88 mmol/l (95% CI 2.86 to 2.90) vs pump therapy 2.80 mmol/l (95% CI 2.78-2.82), both P<0.0001]. Similarly, the odds ratios for LDL cholesterol ≥2.6 mmol/l [0.89 (95% CI 0.82-0.97)] and non-HDL cholesterol ≥3.1 mmol/l [0.85 (0.78 to 0.93)] were significantly lower in the pump therapy group, even after all adjustments. CONCLUSIONS Our results indicate that pump therapy is associated with a better lipid profile.
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Affiliation(s)
- I Kosteria
- Diabetes Centre, Division of Endocrinology, Diabetes and Metabolism, First Department of Paediatrics, National and Kapodistrian University of Athens, Medical School, Aghia Sophia Children's Hospital, Athens, Greece
| | - A Schwandt
- Institute of Epidemiology and Medical Biometry, ZIBMT, Ulm University, Ulm, Germany
- German Centre for Diabetes Research, Munich-Neuherberg, Germany
| | - E Davis
- Centre for Child Health Research, Telethon Kids Institute, University of Western, Perth, Australia
| | - S Jali
- J. N. Medical College (KAHER) and the KLE Diabetes Centre, KLES Dr Prabhakar Kore Hospital, Belgaum, India
| | - M Prieto
- Hospital de Pediatria Garrahan, Buenos Aires, Argentina
| | - D Rottembourg
- Faculty of Medicine and Health Sciences, Sherbrooke University, Sherbrooke, Canada
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Rocca MF, Barrios R, Zintgraff J, Martínez C, Irazu L, Vay C, Prieto M. Utility of platforms Viteks MS and Microflex LT for the identification of complex clinical isolates that require molecular methods for their taxonomic classification. PLoS One 2019; 14:e0218077. [PMID: 31269022 PMCID: PMC6608940 DOI: 10.1371/journal.pone.0218077] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 05/09/2019] [Indexed: 01/21/2023] Open
Abstract
Mass spectrometry has revolutionized the clinical microbiology field in America’s and Europe’s industrialized countries, for being a fast, reliable and inexpensive technique. Our study is based on the comparison of the performance of two commercial platforms, Microflex LT (Bruker Daltonics, Bremen, Germany) and Vitek MS (bioMérieux, Marcy l´Etoile, France) for the identification of unusual and hard-to-diagnose microorganisms in a Reference Laboratory in Argentina. During a four-month period (February–May 2018) the diagnostic efficiency and the concordance between both systems were assessed, and the results were compared with the polyphasic taxonomic identification of all isolates. The study included 265 isolates: 77 Gram-Negative Bacilli, 33 Gram-Positive Cocci, 40 Anaerobes, 35 Actinomycetales, 19 Fastidious Microorganisms and 61 Gram-Positive Bacilli. All procedures were practiced according to the manufacturer’s recommendations in each case by duplicate, and strictly in parallel. Other relevant factors, such as the utility of the recommended extraction protocols, reagent stability and connectivity were also evaluated. Both systems correctly identified the majority of the isolates to species and complex level (82%, 217/265). Vitex MS achieved a higher number of correct species-level identifications between the gram-positive microorganisms; however, it presented greater difficulty in the identification of non-fermenting bacilli and a higher number of incorrect identifications when the profile of the microorganism was not represented in the commercial database. Both platforms showed an excellent performance on the identification of anaerobic bacteria and fastidious species. Both systems enabled the fast and reliable identification of most of the tested isolates and were shown to be very practical for the user.
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Affiliation(s)
- María Florencia Rocca
- Laboratorio Bacteriología Especial, Departamento de Bacteriología, Instituto Nacional de Enfermedades Infecciosas (INEI)–Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) “Dr. Carlos G. Malbrán”, Ciudad Autónoma de Buenos Aires, Argentina
- * E-mail:
| | - Rubén Barrios
- Laboratorio de Bacteriología, Hospital Italiano de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Jonathan Zintgraff
- Laboratorio Bacteriología Clínica, Departamento de Bacteriología, Instituto Nacional de Enfermedades Infecciosas (INEI)–Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) “Dr. Carlos G. Malbrán”, Ciudad Autónoma de Buenos Aires, Argentina
| | - Claudia Martínez
- Laboratorio Bacteriología Especial, Departamento de Bacteriología, Instituto Nacional de Enfermedades Infecciosas (INEI)–Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) “Dr. Carlos G. Malbrán”, Ciudad Autónoma de Buenos Aires, Argentina
| | - Lucía Irazu
- Instituto Nacional de Enfermedades Infecciosas (INEI)–Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) “Dr. Carlos G. Malbrán”, Ciudad Autónoma de Buenos Aires, Argentina
| | - Carlos Vay
- Instituto de Fisiopatología y Bioquímica Clínica, Hospital de Clínicas José de San Martín, Facultad de Farmacia y Bioquímica, Ciudad Autónoma de Buenos Aires, Argentina
| | - Mónica Prieto
- Laboratorio Bacteriología Especial, Departamento de Bacteriología, Instituto Nacional de Enfermedades Infecciosas (INEI)–Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) “Dr. Carlos G. Malbrán”, Ciudad Autónoma de Buenos Aires, Argentina
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Prieto M, Parés S. European Association of Nuclear Medicine - 32nd Annual Congress. Barcelona, Spain - October 12-16, 2019. DRUG FUTURE 2019. [DOI: 10.1358/dof.2019.44.11.3084507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Cipolla L, Rocca F, Armitano RI, Martinez C, Almuzara M, Faccone D, Vay C, Prieto M. [Development and evaluation of an in-house database for quick identification of Burkholderia contaminans by MALDI-TOF MS]. Rev Argent Microbiol 2018; 51:255-258. [PMID: 30558855 DOI: 10.1016/j.ram.2018.09.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 09/24/2018] [Accepted: 09/29/2018] [Indexed: 12/30/2022] Open
Abstract
MALDI-TOF (matrix assisted laser desorption ionization-time of flight) mass spectrometry (MS) proved to be a robust tool for the identification of numerous taxonomic groups. However, it has limitations. A key advantage of this technique is the flexibility for the incorporation of protein profiles of microorganisms not included in the commercial database. Due to the prevalence of Burkholderia contaminans in fibrocystic patients in Argentina and the fact that rapid and reliable microbiological diagnosis is crucial in them, MALDI-TOF MS emerges as a strategic tool. The aim of this work was to develop an additional database with peptide spectra of reference isolates of B. contaminans. This database demonstrated to be successful for the identification of 97% of the isolates analyzed. Therefore, MALDI-TOF MS with the extended database was a useful tool for the identification and differentiation of other related species to B. contaminans.
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Affiliation(s)
- Lucía Cipolla
- Servicio de Bacteriología Especial, Departamento de Bacteriología, Instituto Nacional de Enfermedades Infecciosas (INEI), Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) «Dr. Carlos G. Malbrán», Ciudad Autónoma de Buenos Aires, Argentina.
| | - Florencia Rocca
- Servicio de Bacteriología Especial, Departamento de Bacteriología, Instituto Nacional de Enfermedades Infecciosas (INEI), Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) «Dr. Carlos G. Malbrán», Ciudad Autónoma de Buenos Aires, Argentina
| | - Rita I Armitano
- Servicio de Bacteriología Especial, Departamento de Bacteriología, Instituto Nacional de Enfermedades Infecciosas (INEI), Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) «Dr. Carlos G. Malbrán», Ciudad Autónoma de Buenos Aires, Argentina
| | - Claudia Martinez
- Servicio de Bacteriología Especial, Departamento de Bacteriología, Instituto Nacional de Enfermedades Infecciosas (INEI), Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) «Dr. Carlos G. Malbrán», Ciudad Autónoma de Buenos Aires, Argentina
| | - Marisa Almuzara
- Laboratorio de Bacteriología, Departamento de Bioquímica Clínica, Hospital de Clínicas José de San Martín, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Diego Faccone
- Servicio de Antimicrobianos, Departamento de Bacteriología, Instituto Nacional de Enfermedades Infecciosas (INEI), Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) «Dr. Carlos G. Malbrán», Ciudad Autónoma de Buenos Aires, Argentina
| | - Carlos Vay
- Laboratorio de Bacteriología, Departamento de Bioquímica Clínica, Hospital de Clínicas José de San Martín, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Mónica Prieto
- Servicio de Bacteriología Especial, Departamento de Bacteriología, Instituto Nacional de Enfermedades Infecciosas (INEI), Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) «Dr. Carlos G. Malbrán», Ciudad Autónoma de Buenos Aires, Argentina
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Likotrafiti E, Oniciuc EA, Prieto M, Santos JA, López S, Alvarez-Ordóñez A. Risk assessment of antimicrobial resistance along the food chain through culture-independent methodologies. EFSA J 2018; 16:e160811. [PMID: 32626061 PMCID: PMC7015484 DOI: 10.2903/j.efsa.2018.e160811] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Antimicrobial resistance (AMR) represents a major challenge for Public Health and the scientific community, and requires immediate and drastic solutions. Acquired resistance to certain antimicrobials is already widespread to such an extent that their efficacy in the treatment of certain life-threatening infections is already compromised. To date, the emergence and spread of AMR has been attributed to the use, misuse or indiscriminate use of antibiotics as therapeutic drugs in human, animal and plant health, or as growth promoters in veterinary husbandry. In addition, there is growing concern over the possibility of AMR transmission via the food chain. Food processing environments could act as potential hotspots for AMR acquisition and spread. Indeed, biocide use and exposure to food-related stresses and food processing technologies could presumably act as selection pressures for increased microbial resistance against clinically relevant antibiotics. Global AMR surveillance is critical for providing the necessary information to form global strategies and to monitor the effectiveness of public health interventions as well as to detect new trends and emerging threats. Surveillance of AMR is currently based on the isolation of indicator microorganisms and the phenotypic characterisation of the strains isolated. However, this approach provides very limited information on the mechanisms driving AMR or on the presence and spread of AMR genes. Whole genome sequencing (WGS) of bacterial pathogens is a powerful tool that can be used for epidemiological surveillance, outbreak detection and infection control. In addition, whole metagenome sequencing (WMS) allows for the culture-independent analysis of complex microbial communities, providing useful information on the occurrence of AMR genes. Both approaches can be used to provide the information necessary for the implementation of quantitative risk assessment of AMR transmission routes along the food chain.
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Dao TPT, Fernandes F, Fauquignon M, Ibarboure E, Prieto M, Le Meins JF. The combination of block copolymers and phospholipids to form giant hybrid unilamellar vesicles (GHUVs) does not systematically lead to "intermediate" membrane properties. Soft Matter 2018; 14:6476-6484. [PMID: 30043790 DOI: 10.1039/c8sm00547h] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this work, the elasticity under stretching as well as the fluidity of Giant Hybrid Unilamellar Vesicles (GHUV) has been studied. The membrane structuration of these GHUVs has already been studied at the micro and nanoscale in a previous study of the team. These GHUVs were obtained by the association of a fluid phospholipid (POPC) and a triblock copolymer, poly(ethyleneoxide)-b-poly(dimethylsiloxane)-b-poly(ethyleneoxide). Although the architecture of triblock copolymers can facilitate vesicle formation, they have been scarcely used to generate GHUVs. We show, through micropipette aspiration and FRAP experiments, that the incorporation of a low amount of lipids in the polymer membrane leads to a significant loss of the toughness of the vesicle and subtle modification of the lateral diffusion of polymer chains. We discuss the results within the framework of the conformation of the triblock copolymer chain in the membrane and in the presence of lipid nanodomains.
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Affiliation(s)
- T P T Dao
- University of Bordeaux, LCPO UMR 5629, 16 Avenue Pey Berland, F-33600 Pessac, France.
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Rocca M, Aguerre L, Cipolla L, Martínez C, Armitano R, Dangiolo G, Prieto M. Lactobacillus spp. invasive infections in Argentina. Int J Infect Dis 2018. [DOI: 10.1016/j.ijid.2018.04.3783] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Cipolla L, Gañete M, Serra D, Sampere C, Santillan P, Dinerstein E, Sztokhamer D, Perez M, Prieto M, Togneri A. Identification and molecular epidemiology of a nosocomial outbreak of Ochrobactrum anthropi bacteriemia. First report in Argentina. Int J Infect Dis 2018. [DOI: 10.1016/j.ijid.2018.04.4094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Prieto M, Martínez C, Aguerre L, Rocca M, Cipolla L, Armitano R, Dangiolo G. Pregnancy-associated listeriosis- 30 years of experience in Argentina. Int J Infect Dis 2018. [DOI: 10.1016/j.ijid.2018.04.3772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Abrol N, Dean PG, Prieto M, Stegall MD, Taner T. Routine Stenting of Extravesical Ureteroneocystostomy in Kidney Transplantation: A Systematic Review and Meta-analysis. Transplant Proc 2018; 50:3397-3404. [PMID: 30577212 DOI: 10.1016/j.transproceed.2018.06.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 06/27/2018] [Indexed: 01/25/2023]
Abstract
BACKGROUND Although rare, major urologic complications (MUC) in kidney transplantation can cause significant morbidity, increased cost, and may even lead to graft loss. Ureteric stents are routinely used to prevent MUC, although complications related to their use have been reported. Here, we systematically reviewed the role of routine stenting in preventing MUC in kidney transplantation with extravesical ureteric implantation and performed a meta-analysis of 6 randomized controlled trials. METHODS A PubMed search was performed for studies on MUC and stents in kidney transplant recipients. Randomized controlled trials were shortlisted for the review following Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. RevMan 5 was used for statistical analysis, and outcome analysis was done with Cochran-Mantel-Haenszel test using random effect model. RESULTS Six trials meeting the criteria were identified. Although stent use did not decrease the incidence of urinary leak (odds ratio [OR], 0.39; 95% CI, 0.14-1.11; P = .08) or obstruction (OR, 0.41; 95% CI, 0.13-1.24; P = .11), it was associated with a higher incidence of urinary tract infection (OR, 3.59; 95% CI, 1.33-9.75; P = .01). CONCLUSION In the present era of extravesical ureterovesical anastomosis, routine stenting has a limited role in decreasing major urologic complications and may be associated with higher incidence of urinary tract infections.
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Affiliation(s)
- N Abrol
- William J. von Liebig Center for Transplantation, Mayo Clinic, Rochester, MN
| | - P G Dean
- William J. von Liebig Center for Transplantation, Mayo Clinic, Rochester, MN
| | - M Prieto
- William J. von Liebig Center for Transplantation, Mayo Clinic, Rochester, MN
| | - M D Stegall
- William J. von Liebig Center for Transplantation, Mayo Clinic, Rochester, MN
| | - T Taner
- William J. von Liebig Center for Transplantation, Mayo Clinic, Rochester, MN.
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Cipolla L, Derdoy L, Archuby D, Tarzia A, Govedic F, Prieto M. Sepsis secondary to complicated skin and soft tissue infection caused by Ignatzschineria indica. First case report in Latin America. JMM Case Rep 2018; 5:e005151. [PMID: 30128158 PMCID: PMC6096929 DOI: 10.1099/jmmcr.0.005151] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 04/06/2018] [Indexed: 11/29/2022] Open
Abstract
Introduction Ignatzschineria is a recently recognized genus associated with larvae infestation Members of this genus are pathogens infrequently implicated in human disease. During the last decade, fewer than 10 cases of infection with Ignatzchineria species have been reported around the world. Bacteria of the genera Ignatzchineria and Wohlfahrtiimonas have been isolated from larvae of the parasitic fly Wohlfahrtia magnifica, which is found in Europe, Asia and North Africa, and is associated with myiasis in several animal species, but rarely in humans. Case presentation We report the first case of sepsis associated with complicated skin and soft tissue infection caused by I. indica in Latin America. Conclusion The clinical and molecular findings in our report add information to the accumulating data on emerging pathogens of this type, their geographic distribution, the correlation between the emergence of infectious diseases and social and economic inequalities, as well as the effects of global climate changes on potentially unusual distribution of vectors. We consider that fly larvae should be regarded as a potential source of specific arthropod-borne bacterial systemic infections.
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Affiliation(s)
- Lucía Cipolla
- Servicio Bacteriología Especial, Instituto Nacional de Enfermedades Infecciosas 'Dr. C. G. Malbrán', Ciudad Autónoma de Buenos Aires, Argentina
| | - Laura Derdoy
- Sección Microbiología, Hospital 'Dr. J. M. Ramos Mejía', Buenos Aires, Argentina
| | - Daniela Archuby
- Sección Microbiología, Hospital 'Dr. J. M. Ramos Mejía', Buenos Aires, Argentina
| | - Adriana Tarzia
- Sección Microbiología, Hospital 'Dr. J. M. Ramos Mejía', Buenos Aires, Argentina
| | | | - Mónica Prieto
- Servicio Bacteriología Especial, Instituto Nacional de Enfermedades Infecciosas 'Dr. C. G. Malbrán', Ciudad Autónoma de Buenos Aires, Argentina
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Bourliere M, Charlton M, Manns M, Prieto M, Fernandez I, Londoño M, Kwok R, Smith C, Ngo H, Lee S, Zhang J, Arterburn S, Copans A, Rosarro L, Curry M, Flamm S. A168 USE OF LEDIPASVIR/SOFOSBUVIR (LDV/SOF) WITH OR WITHOUT RIBAVIRIN (RBV) IN GENOTYPE 1 (GT 1) HCV-INFECTED PATIENTS POST LIVER TRANSPLANT (LT): EVALUATION OF SEVERAL REAL-WORLD DATASETS (RWD). J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy008.169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - M Charlton
- Intermountain Medical Center, Murray, UT
| | - M Manns
- Hannover Medical School, Hannover, Germany
| | - M Prieto
- Unidad de Hepatología, Servicio de Medicina Digestiva, Hospital Universitari i Politècnic La Fe, Spain, Valencia, Spain
| | - I Fernandez
- Service of Gastroenterology Hospital Universitario, Madrid, Spain
| | - M Londoño
- Hospital Clinic Barcelona, Barcelona, Spain
| | - R Kwok
- Walter Reed National Military Medical Center, Bethesda, MD
| | - C Smith
- Medstar Georgetown University Hospital, Washington
| | - H Ngo
- Gilead Sciences Canada, Inc., Mississauga, ON, Canada
| | - S Lee
- Gilead Sciences, Inc., Foster City, CA
| | - J Zhang
- Gilead Sciences, Inc., Foster City, CA
| | | | - A Copans
- Gilead Sciences, Inc., Foster City, CA
| | - L Rosarro
- Gilead Sciences, Inc., Foster City, CA
| | - M Curry
- Beth Israel Deaconess Medical Center, Boston, MA
| | - S Flamm
- Northwestern University Feinberg School of Medicine, Chicago, IL
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de Pablo MA, Ramos M, Molina A, Prieto M. Thaw depth spatial and temporal variability at the Limnopolar Lake CALM-S site, Byers Peninsula, Livingston Island, Antarctica. Sci Total Environ 2018; 615:814-827. [PMID: 29017125 DOI: 10.1016/j.scitotenv.2017.09.284] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 09/26/2017] [Accepted: 09/26/2017] [Indexed: 06/07/2023]
Abstract
A new Circumpolar Active Layer Monitoring (CALM) site was established in 2009 at the Limnopolar Lake watershed in Byers Peninsula, Livingston Island, Antarctica, to provide a node in the western Antarctic Peninsula, one of the regions that recorded the highest air temperature increase in the planet during the last decades. The first detailed analysis of the temporal and spatial evolution of the thaw depth at the Limnopolar Lake CALM-S site is presented here, after eight years of monitoring. The average values range between 48 and 29cm, decreasing at a ratio of 16cm/decade. The annual thaw depth observations in the 100×100 m CALM grid are variable (Variability Index of 34 to 51%), although both the Variance Coefficient and the Climate Matrix Analysis Residual point to the internal consistency of the data. Those differences could be explained then by the terrain complexity and node-specific variability due to the ground properties. The interannual variability was about 60% during 2009-2012, increasing to 124% due to the presence of snow in 2013, 2015 and 2016. The snow has been proposed here as one of the most important factors controlling the spatial variability of ground thaw depth, since its values correlate with the snow thickness but also with the ground surface temperature and unconfined compression resistance, as measured in 2010. The topography explains the thaw depth spatial distribution pattern, being related to snowmelt water and its accumulation in low-elevation areas (downslope-flow). Patterned grounds and other surface features correlate well with high thaw depth patterns as well. The edaphic factor (E=0.05842m2/°C·day; R2=0.63) is in agreement with other permafrost environments, since frozen index (F>0.67) and MAAT (<-2°C) denote a continuous permafrost existence in the area. All these characteristics provided the basis for further comparative analyses between others nearby CALM sites.
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Affiliation(s)
- M A de Pablo
- Department of Geology, Geography and Environment, Faculty of Biology, Environmental Sciences and Chemistry, University of Alcalá, 28805 Madrid, Spain.
| | - M Ramos
- Department of Physics and Mathematics, Faculty of Biology, Environmental Sciences and Chemistry, University of Alcalá, 28805 Madrid, Spain
| | - A Molina
- Department of Geology, Geography and Environment, Faculty of Biology, Environmental Sciences and Chemistry, University of Alcalá, 28805 Madrid, Spain
| | - M Prieto
- Department of Automatics, Polytechnics School, University of Alcalá, 28805 Madrid, Spain
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Dao T, Fauquignon M, Fernandes F, Ibarboure E, Vax A, Prieto M, Le Meins J. Membrane properties of giant polymer and lipid vesicles obtained by electroformation and pva gel-assisted hydration methods. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.09.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Lertxundi U, Domingo-Echaburu S, Corcostegui B, Prieto M, Gonzalez U, Arana A, Hernandez R, Medrano J. The Burden of Constipation In Psychiatric Hospitals. Clin Ther 2017. [DOI: 10.1016/j.clinthera.2017.05.104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Gastaca M, Prieto M, Valdivieso A, Ruiz P, Ventoso A, Palomares I, Matarranz A, Martinez-Indart L, Ortiz de Urbina J. Intraoperative Portal Flow of Less Than 1 Liter per Minute After Orthotopic Liver Transplantation Is Not Associated Per Se With an Increased Rate of Early Graft Dysfunction. Transplant Proc 2017; 48:2495-2498. [PMID: 27742333 DOI: 10.1016/j.transproceed.2016.08.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVE The aim of this study was to determine whether a portal flow of <1,000 mL/min in orthotopic liver transplantation (OLT) is associated with a higher incidence of early graft dysfunction (EGD) and graft loss. METHODS A retrospective study was performed of 540 OLTs carried out consecutively from December 2004 to December 2013. Patients were divided into 2 groups: group A, portal flow <1,000 mL/min; and group B, portal flow >1,000 mL/min. We studied the incidence of EGD and graft survival. A subanalysis was performed to define the minimum acceptable portal flow/100 g of liver weight to reduce the development EGD and graft loss. RESULTS Group A included 29 patients and group B, 511 patients. Group A had significantly lower-weight donors and recipients, female recipients with cholestatic disease, lower MELD scores, and lower hepatic artery flow. EGD occurred in 7 patients in group A (24.1%) versus 101 patients in group B (19.8%; P = .43). No significant differences were found in 1- and 5-year graft survival. A portal flow of <80 mL/min/100 g of liver weight was related to a significantly higher risk of developing EGD (odds ratio, 4.35; 95% confidence interval [CI], 1.46-12.91; P = .008) and graft loss (hazard ratio, 4.05; 95% CI, 1.32-12.42; P = .014). CONCLUSIONS Intraoperative portal flow of <1,000 mL/min in OLT was not related per se with a higher incidence of EGD or graft loss. Significantly higher risk of developing EGD and graft loss was associated with a portal flow of <80 mL/min/100 g of liver weight.
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Affiliation(s)
- M Gastaca
- Hepatobiliary Surgery and Liver Transplantation Unit, Cruces University Hospital, University of the Basque Country, Bilbao, Spain.
| | - M Prieto
- Hepatobiliary Surgery and Liver Transplantation Unit, Cruces University Hospital, University of the Basque Country, Bilbao, Spain
| | - A Valdivieso
- Hepatobiliary Surgery and Liver Transplantation Unit, Cruces University Hospital, University of the Basque Country, Bilbao, Spain
| | - P Ruiz
- Hepatobiliary Surgery and Liver Transplantation Unit, Cruces University Hospital, University of the Basque Country, Bilbao, Spain
| | - A Ventoso
- Hepatobiliary Surgery and Liver Transplantation Unit, Cruces University Hospital, University of the Basque Country, Bilbao, Spain
| | - I Palomares
- Hepatobiliary Surgery and Liver Transplantation Unit, Cruces University Hospital, University of the Basque Country, Bilbao, Spain
| | - A Matarranz
- Hepatobiliary Surgery and Liver Transplantation Unit, Cruces University Hospital, University of the Basque Country, Bilbao, Spain
| | - L Martinez-Indart
- Clinical Epidemiology Unit, Cruces University Hospital, Biocruces Health Research Institute, Bilbao, Spain
| | - J Ortiz de Urbina
- Hepatobiliary Surgery and Liver Transplantation Unit, Cruces University Hospital, University of the Basque Country, Bilbao, Spain
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Sanchez Antolin G, Testillano M, Pascasio JM, Narvaez Rodriguez I, Prieto M, Otero A, Herrero JI, Londoño M, Fernandez Vazquez I, Castells L. Efficacy and Safety of Therapy With Simeprevir and Sofosbuvir in Liver Transplant Recipients Infected by Hepatitis C Virus Genotype 4: Cohort Spanish Society of Liver Transplantation Cohort. Transplant Proc 2017; 48:3013-3016. [PMID: 27932134 DOI: 10.1016/j.transproceed.2016.08.034] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 08/22/2016] [Indexed: 02/07/2023]
Abstract
BACKGROUND Patients with hepatitis C virus (HCV) genotype 4 infection are poorly represented in clinical trials of 2nd-generation direct-acting antivirals (DAAs), and more data are needed to help guide treatment decisions. We still have even fewer data concerning liver transplant patients. Simeprevir (SIM) and sofosbuvir (SOF) combination is useful to treat this genotype. The aim of this study was to know the efficacy and safety of the combination SIM + SOF ± ribavirin (RBV) in a group of liver transplant patients with HCV genotype 4 infection in Spain in real life. METHODS This was a multicenter retrospective study, including 28 HCV genotype 4 patients from 11 liver transplant centers who were treated with SIM + SOF ± RBV. We included in the analysis demographic, clinical, and virologic data and details of serious adverse events (SAEs), including mortality rate 6 months after treatment. RESULTS All patients were male, mean age 52 ± 9.43 years, and 50% were IL28B CT and 37.5% TT; 46.42% of them were pretreated and 76.9 were null responders. Fibrosis stage 4 was found in 38.7% of patients; in 67.8% of those cases the diagnosis of fibrosis was made with the use of Fibroscan, in 21.4% by liver biopsy. The average Fibroscan was 13.86 KPa. The average Model for End-Stage Liver Disease (MELD) score of cirrhotic patients was 10.9 and the Child-Pugh score was A in 70%, B in 20%, and C in 10%. We included RBV in 75% of patients, and treatment duration was 12 weeks in all patients. The sustained virologic response at week 12 (SVR12) was 95.23%. There were no discontinuations due to SAEs, but the mortality rate at 6 months after treatment was 7.14%. All deceased patients were cirrhotic, Child C, and with an average MELD score of 20. CONCLUSIONS The combination SIM + SOF ± RBV to treat HCV genotype 4 in liver transplant patients is an option with high rates of SVR12 and very safe, similarly to genotype 1. There was no treatment-related mortality, but when it is administered in advanced stages of fibrosis it may not be enough to prevent mortality associated with cirrhotic hepatitis C recurrence after transplantation.
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Affiliation(s)
- G Sanchez Antolin
- Hepatology Unit, Liver Transplant Unit, Hospital Universitario Rio Hortega, Valladolid, Spain.
| | - M Testillano
- Hepatology Unit, Liver Transplant Unit, Hospital Universitario Cruces, Bilbao, Spain
| | - J M Pascasio
- Hepatology Unit, Hospital Universitario Virgen del Rocio, CIBERhed, Sevilla, Spain
| | - I Narvaez Rodriguez
- Gastroenterology Service, Liver Transplant Unit Hospital Infanta Cristina, Badajoz, Spain
| | - M Prieto
- Hepatology Unit, Hospital, Liver Transplant Unit Universitario La Fe, Valencia, Spain
| | - A Otero
- Liver Transplant Unit, Hospital Universitario Juan Canalejo, La Coruña, Spain
| | - J I Herrero
- Service of Internal Medicine, Liver Transplant Unit, CUN, Pamplona, Spain
| | - M Londoño
- Hepatology Service, Liver Transplant Unit, Hospital Clinic, CIBERhed, Barcelona, Spain
| | - I Fernandez Vazquez
- Service of Gastroenterology, Hepatology Unit, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - L Castells
- Service of Hepatology, CIBERhed Hospital Universitario, Vall d'Hebrón, Spain
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Affiliation(s)
- Y. González
- Departamento de Ciencias Biológicas, Sección de Ecología y Sistemática, Universidad Técnica Particular de Loja, San Cayetano Alto s/n, Loja, Ecuador
| | - G. Aragón
- Departamento de Biología, Geología, Física y Química Inorgánica, Área de Biodiversidad y Conservación ESCET, Universidad Rey Juan Carlos, Móstoles, E- 28933, Madrid, Spain
| | - A. Benítez
- Departamento de Ciencias Biológicas, Sección de Ecología y Sistemática, Universidad Técnica Particular de Loja, San Cayetano Alto s/n, Loja, Ecuador
| | - M. Prieto
- Departamento de Biología, Geología, Física y Química Inorgánica, Área de Biodiversidad y Conservación ESCET, Universidad Rey Juan Carlos, Móstoles, E- 28933, Madrid, Spain
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Perelló C, Carrión JA, Ruiz-Antorán B, Crespo J, Turnes J, Llaneras J, Lens S, Delgado M, García-Samaniego J, García-Paredes F, Fernández I, Morillas RM, Rincón D, Porres JC, Prieto M, Lázaro Ríos M, Fernández-Rodríguez C, Hermo JA, Rodríguez M, Herrero JI, Ruiz P, Fernández JR, Macías M, Pascasio JM, Moreno JM, Serra MÁ, Arenas J, Real Y, Jorquera F, Calleja JL. Effectiveness and safety of ombitasvir, paritaprevir, ritonavir ± dasabuvir ± ribavirin: An early access programme for Spanish patients with genotype 1/4 chronic hepatitis C virus infection. J Viral Hepat 2017; 24:226-237. [PMID: 27976491 DOI: 10.1111/jvh.12637] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 10/11/2016] [Indexed: 12/16/2022]
Abstract
Over the last 5 years, therapies for hepatitis C virus (HCV) infection have improved significantly, achieving sustained virologic response (SVR) rates of up to 100% in clinical trials in patients with HCV genotype 1. We investigated the effectiveness and safety of ombitasvir/paritaprevir/ritonavir±dasabuvir in an early access programme. This was a retrospective, multicentre, national study that included 291 treatment-naïve and treatment-experienced patients with genotype 1 or 4 HCV infection. Most patients (65.3%) were male, and the mean age was 57.5 years. The mean baseline viral load was 6.1 log, 69.8% had HCV 1b genotype, 72.9% had cirrhosis and 34.7% were treatment-naïve. SVR at 12 weeks posttreatment was 96.2%. Four patients had virological failure (1.4%), one leading to discontinuation. There were no statistical differences in virological response according to genotype or liver fibrosis. Thirty patients experienced serious adverse events (SAEs) (10.3%), leading to discontinuation in six cases. Hepatic decompensation was observed in five patients. Four patients died during treatment or follow-up, three of them directly related to liver failure. Multivariate analyses showed a decreased probability of achieving SVR associated with baseline albumin, bilirubin and Child-Pugh score B, and a greater probability of developing SAEs related to age and albumin. This combined therapy was highly effective in clinical practice with an acceptable safety profile and low rates of treatment discontinuation.
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Affiliation(s)
- C Perelló
- Hospital Universitario Puerta de Hierro Majadahonda, IDIPHIM, Madrid, Spain.,CIBERehd, Madrid, Spain
| | - J A Carrión
- Hospital del Mar, IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain.,Universitat Autonoma de Barcelona, Barcelona, Spain
| | - B Ruiz-Antorán
- Hospital Universitario Puerta de Hierro Majadahonda, IDIPHIM, Madrid, Spain
| | - J Crespo
- Hospital Universitario Marqués de Valdecilla, IDIVAL, Santander, Spain.,Facultad de Medicina, Universidad de Cantabria, Santander, Spain
| | - J Turnes
- Complejo Hospitalario Universitario de Pontevedra and IISGS, Pontevedra, Spain
| | - J Llaneras
- Hospital Universitario Vall D'Hebrón, Barcelona, Spain
| | - S Lens
- CIBERehd, Madrid, Spain.,Hospital Clinic, IDIBAPS, Barcelona, Spain
| | - M Delgado
- Hospital Universitario A Coruña, A Coruña, Spain
| | | | | | - I Fernández
- Hospital Universitario Doce de Octubre, Madrid, Spain
| | - R M Morillas
- CIBERehd, Madrid, Spain.,Hospital Universitario Germans Trias i Pujol, Badalona, Spain
| | - D Rincón
- CIBERehd, Madrid, Spain.,Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - J C Porres
- Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain
| | - M Prieto
- CIBERehd, Madrid, Spain.,Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | - M Lázaro Ríos
- Hospital Universitario Miguel Servet, Zaragoza, Spain
| | | | - J A Hermo
- Hospital Álvaro Cunqueiro, Vigo, Spain
| | - M Rodríguez
- Hospital Universitario Central de Asturias, Oviedo, Spain
| | - J I Herrero
- CIBERehd, Madrid, Spain.,Clínica Universidad de Navarra, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - P Ruiz
- Hospital Universitario Basurto, Bilbao, Spain
| | | | - M Macías
- Hospital Universitario Puerta del Mar, Cádiz, Spain
| | - J M Pascasio
- CIBERehd, Madrid, Spain.,Hospital Universitario Virgen del Rocío, Sevilla, Spain
| | - J M Moreno
- Complejo Hospitalario Albacete, Albacete, Spain
| | - M Á Serra
- Hospital Universitario Clínico Valencia, INCLIVA, Valencia, Spain.,University of Valencia, Valencia, Spain
| | - J Arenas
- Hospital Universitario Donostia, Donostia, Spain
| | - Y Real
- Hospital Universitario La Princesa, Madrid, Spain
| | - F Jorquera
- CIBERehd, Madrid, Spain.,Complejo Asistencial de León, IBIOMED, León, Spain
| | - J L Calleja
- Hospital Universitario Puerta de Hierro Majadahonda, IDIPHIM, Madrid, Spain.,CIBERehd, Madrid, Spain.,Universidad Autónoma de Madrid, Madrid, Spain
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Dao TPT, Brûlet A, Fernandes F, Er-Rafik M, Ferji K, Schweins R, Chapel JP, Fedorov A, Schmutz M, Prieto M, Sandre O, Le Meins JF. Mixing Block Copolymers with Phospholipids at the Nanoscale: From Hybrid Polymer/Lipid Wormlike Micelles to Vesicles Presenting Lipid Nanodomains. Langmuir 2017; 33:1705-1715. [PMID: 28128560 DOI: 10.1021/acs.langmuir.6b04478] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Hybrids, i.e., intimately mixed polymer/phospholipid vesicles, can potentially marry in a single membrane the best characteristics of the two separate components. The ability of amphiphilic copolymers and phospholipids to self-assemble into hybrid membranes has been studied until now on the submicrometer scale using optical microscopy on giant hybrid unilamellar vesicles (GHUVs), but limited information is available on large hybrid unilamellar vesicles (LHUVs). In this work, copolymers based on poly(dimethylsiloxane) and poly(ethylene oxide) with different molar masses and architectures (graft, triblock) were associated with 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC). Classical protocols of LUV formation were used to obtain nanosized self-assembled structures. Using small-angle neutron scattering (SANS), time-resolved Förster resonance energy transfer (TR-FRET), and cryo-transmission electron microscopy (cryo-TEM), we show that copolymer architecture and molar mass have direct influences on the formation of hybrid nanostructures that can range from wormlike hybrid micelles to hybrid vesicles presenting small lipid nanodomains.
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Affiliation(s)
- T P Tuyen Dao
- University of Bordeaux , LCPO UMR 5629, 16 Avenue Pey Berland, F-33600 Pessac, France
- CNRS , Laboratoire de Chimie des Polymères Organiques, UMR 5629, F-33600, Pessac, France
- Centro de Química-Física Molecular and Institute of Nanoscience and Nanotechnology, Universidade de Lisboa Instituto Superior Técnico , 1049-001 Lisboa, Portugal
| | - A Brûlet
- Laboratoire Léon Brillouin, UMR12 CEA-CNRS, CEA Saclay , F-91191 Gif-sur-Yvette Cedex, France
| | - F Fernandes
- Centro de Química-Física Molecular and Institute of Nanoscience and Nanotechnology, Universidade de Lisboa Instituto Superior Técnico , 1049-001 Lisboa, Portugal
- Research Unit on Applied Molecular Biosciences-Rede de Química e Tecnologia (UCIBIO-REQUIMTE), Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa , Caparica, Portugal
| | - M Er-Rafik
- Institut Charles Sadron, UPR 22 CNRS, Université de Strasbourg , 23 rue du Loess, 67034 Strasbourg, France
| | - K Ferji
- University of Bordeaux , LCPO UMR 5629, 16 Avenue Pey Berland, F-33600 Pessac, France
- CNRS , Laboratoire de Chimie des Polymères Organiques, UMR 5629, F-33600, Pessac, France
| | - R Schweins
- ILL Grenoble, DS LSS, CS20156, 71 Avenue Martyrs, F-38042 Grenoble 9, France
| | - J-P Chapel
- Université de Bordeaux, CNRS , Ctr Rech Paul Pascal CRPP, UPR 8641, F-33600 Pessac, France
| | - A Fedorov
- Centro de Química-Física Molecular and Institute of Nanoscience and Nanotechnology, Universidade de Lisboa Instituto Superior Técnico , 1049-001 Lisboa, Portugal
| | - M Schmutz
- Institut Charles Sadron, UPR 22 CNRS, Université de Strasbourg , 23 rue du Loess, 67034 Strasbourg, France
| | - M Prieto
- Centro de Química-Física Molecular and Institute of Nanoscience and Nanotechnology, Universidade de Lisboa Instituto Superior Técnico , 1049-001 Lisboa, Portugal
| | - O Sandre
- University of Bordeaux , LCPO UMR 5629, 16 Avenue Pey Berland, F-33600 Pessac, France
- CNRS , Laboratoire de Chimie des Polymères Organiques, UMR 5629, F-33600, Pessac, France
| | - J-F Le Meins
- University of Bordeaux , LCPO UMR 5629, 16 Avenue Pey Berland, F-33600 Pessac, France
- CNRS , Laboratoire de Chimie des Polymères Organiques, UMR 5629, F-33600, Pessac, France
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Calvo I, Prieto M, Suárez-Gauthier A, Pérez FJ, Hernández E, Acosta D, Cárdenas JM, López-Ríos F, Estévez LG. Abstract P4-03-16: FAPα (fibroblast activation protein-α) analysis in breast tumor cells and stroma after neoadjuvant treatment. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p4-03-16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: FAPα is a transmembrane serine protease expressed on cancer associated fibroblast that promotes tumour growth and invasion. In patients (pts) with poor outcome and survival FAPα is highly overexpressed. FAPα is also expressed in stroma across all breast cancer subtypes without association with clinicopathological factors. Pts without Complete Pathological Response (pCR) after Neoadjuvant Chemotherapy (NC) had poor outcome. We analysed the relationship between the expression of FAPα in stroma (fibroblast) and in epithelial breast cancer cells of pts without pCR after NC (taxanes, antracyclines and trastuzumab in Her2+).
Methods: 60 pts were included. ER, PR and Ki67 were studied by IHQ (Ventana) and Her2 by FISH (PatnVysion). FAPα expression was determined by IHQ (polyclonal, Ventana). St Gallen guidelines for subtype of breast cancer were used.
Results: 53 pts had tissue. Median age 47 years (range 29-68). Median tumour size 43mm and 10 (18.9%) were multifocal. 37 (69.8%) had positive axillary nodes. 47 were ductal invasive carcinomas. 33 (62.3%) were grade 2 and 20 (37.7%) grade 3. 44 pts (83%) had ER+ (20 luminal B), 17 (32%) Her2+ and 6 (11%) triple negative(TN). Median Ki67 was 22% (p25-75:15-38%). Miller-Payne response was 1.9% G1 (1pt), 43.4% G2 (23 pts), 41.5% G3 (22 pts) and 13.2% G4 (7 pts). The recurrences were 2 local and 12 distant (26.4%). Median FAPα in residual epithelial breast cancer cells after NC was 85% (p25-75:30-95%) and in the stroma 20% (p25-75:10-62%). Median epithelial FAPα was 55% in TN, 85% Her2, 72.5% luminal A and 92.5% in luminal B. Median stromal FAPα was 52.5% in TN, 20% Her2, 15% luminal A and 15% in luminal B. There is not association between stromal FAPα and clinicopathological features, but a higher epithelial FAPα was found in tumours wih higher ER, PR and Ki67. In luminal B subtype, stromal FAPα was smaller in pts with relapses (median 7.5%) than without relapses (median 30%). Conclusions: Stromal FAPα in residual cancer after NC is higher in TN breast cancer but without association with relapses in our small sample. However, in luminal B subtype stromal FAPα is smaller in pts with relapses.
Citation Format: Calvo I, Prieto M, Suárez-Gauthier A, Pérez FJ, Hernández E, Acosta D, Cárdenas JM, López-Ríos F, Estévez LG. FAPα (fibroblast activation protein-α) analysis in breast tumor cells and stroma after neoadjuvant treatment [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P4-03-16.
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Affiliation(s)
- I Calvo
- Breast Cancer Unit of Centro Integral Oncológico Clara Campal, Madrid, Spain; IT – Information Tecnology. San Pablo University, Madrid, Spain; Medicine Faculty. San Pablo CEU University, Madrid, Spain
| | - M Prieto
- Breast Cancer Unit of Centro Integral Oncológico Clara Campal, Madrid, Spain; IT – Information Tecnology. San Pablo University, Madrid, Spain; Medicine Faculty. San Pablo CEU University, Madrid, Spain
| | - A Suárez-Gauthier
- Breast Cancer Unit of Centro Integral Oncológico Clara Campal, Madrid, Spain; IT – Information Tecnology. San Pablo University, Madrid, Spain; Medicine Faculty. San Pablo CEU University, Madrid, Spain
| | - FJ Pérez
- Breast Cancer Unit of Centro Integral Oncológico Clara Campal, Madrid, Spain; IT – Information Tecnology. San Pablo University, Madrid, Spain; Medicine Faculty. San Pablo CEU University, Madrid, Spain
| | - E Hernández
- Breast Cancer Unit of Centro Integral Oncológico Clara Campal, Madrid, Spain; IT – Information Tecnology. San Pablo University, Madrid, Spain; Medicine Faculty. San Pablo CEU University, Madrid, Spain
| | - D Acosta
- Breast Cancer Unit of Centro Integral Oncológico Clara Campal, Madrid, Spain; IT – Information Tecnology. San Pablo University, Madrid, Spain; Medicine Faculty. San Pablo CEU University, Madrid, Spain
| | - JM Cárdenas
- Breast Cancer Unit of Centro Integral Oncológico Clara Campal, Madrid, Spain; IT – Information Tecnology. San Pablo University, Madrid, Spain; Medicine Faculty. San Pablo CEU University, Madrid, Spain
| | - F López-Ríos
- Breast Cancer Unit of Centro Integral Oncológico Clara Campal, Madrid, Spain; IT – Information Tecnology. San Pablo University, Madrid, Spain; Medicine Faculty. San Pablo CEU University, Madrid, Spain
| | - LG Estévez
- Breast Cancer Unit of Centro Integral Oncológico Clara Campal, Madrid, Spain; IT – Information Tecnology. San Pablo University, Madrid, Spain; Medicine Faculty. San Pablo CEU University, Madrid, Spain
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Casanova A, Vicente-Vicente L, Hernández-Sánchez M, Rihuete M, Nieto R, Ramis L, del Barco E, Gómez-Bernal A, Cruz J, Sancho S, Prieto M, Pescador M, López-Hernández F, Morales A. Acute kidney injury predisposition induced by sub-nephrotoxic dosage of cisplatin disappears after 6 days. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.07.578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Vicente-Vicente L, Prieto M, Pescador M, Casanova A, Hernández-Sánchez M, Morales A. The European TOX-OER project: Learning toxicology through open educational resources. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.07.270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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