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Polanco D, González J, Gracia-Lavedan E, Pinilla L, Plana R, Molina M, Pardina M, Barbé F. Multidisciplinary virtual management of pulmonary nodules. Pulmonology 2024; 30:239-246. [PMID: 35115280 DOI: 10.1016/j.pulmoe.2021.12.003] [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: 08/25/2021] [Revised: 12/21/2021] [Accepted: 12/22/2021] [Indexed: 10/19/2022] Open
Abstract
INTRODUCTION AND OBJECTIVES Multidisciplinary nodule clinics provide high-quality care and favor adherence to guidelines. Virtual care has shown savings benefits along with patient satisfaction. Our aim is to describe the first year of operation of a multidisciplinary virtual lung nodule clinic, the population evaluated and issued decisions. Secondarily, among discharged patients, we aimed to analyze their follow-up prior to the existence of our consultation, evaluating its adherence to guidelines. MATERIALS AND METHODS Observational study including all patients evaluated at the Virtual Lung Nodule Clinic (VLNC) (March 2018- March 2019). Clinical and radiological data were recorded. Recommendations, based on 2017 Fleischner Society guidelines, were categorized into follow-up, discharge or referral to lung cancer consultation. Discharged patients were classified according to adherence to guidelines of their previous management, into adequate, prolonged and non-indicated follow-up. RESULTS A total of 365 patients (58.9% men; median age 64.0 years) were included. Sixty-four percent had smoking history and 23% had chronic obstructive pulmonary disease (COPD). Most nodules were solid (87.4%) and multiple (57.5%). The median diameter was 6.00 mm. 43.8% of patients were discharged following first VLNC evaluation. Among them, 27.5% had received appropriate follow-up, but 66.9% had received poor management. Patients with prolonged follow-up (33.1%) were older (67.0 vs 60.5 years) and had larger nodules (6.00 mm vs 5.00). Non-indicated follow-up patients (33.8%) were more non-smokers (77.8% vs 31.8%) and presented smaller nodules (4.00 vs 5.00 mm). CONCLUSIONS During its first year of operation, the VLNC has evaluated a population with a relevant risk profile for lung cancer development, management of which should be cautious and adhere to guidelines. After the first VLNC assessment, approximately one-half of this population was discharged. It was noticeable that previous follow-up of discharged patients was found poorly adherent to guidelines, with a marked tendency to overmanagement.
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Affiliation(s)
- D Polanco
- Respiratory Department, University Hospital Arnau de Vilanova. Av. Alcalde Rovira Roure, 80, 25198 Lleida, Spain; Group of Translational Research in Respiratory Medicine, University Hospital Arnau de Vilanova and Santa Maria, IRBLleida, Spain
| | - J González
- Respiratory Department, University Hospital Arnau de Vilanova. Av. Alcalde Rovira Roure, 80, 25198 Lleida, Spain; Group of Translational Research in Respiratory Medicine, University Hospital Arnau de Vilanova and Santa Maria, IRBLleida, Spain
| | - E Gracia-Lavedan
- Group of Translational Research in Respiratory Medicine, University Hospital Arnau de Vilanova and Santa Maria, IRBLleida, Spain; Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Spain
| | - L Pinilla
- Group of Precision Medicine in Chronic Diseases, University Hospital Arnau de Vilanova and Santa Maria, IRBLleida, Spain; Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Spain
| | - R Plana
- Respiratory Department, University Hospital Arnau de Vilanova. Av. Alcalde Rovira Roure, 80, 25198 Lleida, Spain; Group of Translational Research in Respiratory Medicine, University Hospital Arnau de Vilanova and Santa Maria, IRBLleida, Spain
| | - M Molina
- Respiratory Department, University Hospital Arnau de Vilanova. Av. Alcalde Rovira Roure, 80, 25198 Lleida, Spain
| | - M Pardina
- Department of Radiology, Arnau de Vilanova University Hospital, IRBLleida
| | - F Barbé
- Respiratory Department, University Hospital Arnau de Vilanova. Av. Alcalde Rovira Roure, 80, 25198 Lleida, Spain; Group of Translational Research in Respiratory Medicine, University Hospital Arnau de Vilanova and Santa Maria, IRBLleida, Spain; Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Spain.
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Morales N, Valdés-Muñoz E, González J, Valenzuela-Hormazábal P, Palma JM, Galarza C, Catagua-González Á, Yáñez O, Pereira A, Bustos D. Machine Learning-Driven Classification of Urease Inhibitors Leveraging Physicochemical Properties as Effective Filter Criteria. Int J Mol Sci 2024; 25:4303. [PMID: 38673888 PMCID: PMC11049951 DOI: 10.3390/ijms25084303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 04/03/2024] [Accepted: 04/08/2024] [Indexed: 04/28/2024] Open
Abstract
Urease, a pivotal enzyme in nitrogen metabolism, plays a crucial role in various microorganisms, including the pathogenic Helicobacter pylori. Inhibiting urease activity offers a promising approach to combating infections and associated ailments, such as chronic kidney diseases and gastric cancer. However, identifying potent urease inhibitors remains challenging due to resistance issues that hinder traditional approaches. Recently, machine learning (ML)-based models have demonstrated the ability to predict the bioactivity of molecules rapidly and effectively. In this study, we present ML models designed to predict urease inhibitors by leveraging essential physicochemical properties. The methodological approach involved constructing a dataset of urease inhibitors through an extensive literature search. Subsequently, these inhibitors were characterized based on physicochemical properties calculations. An exploratory data analysis was then conducted to identify and analyze critical features. Ultimately, 252 classification models were trained, utilizing a combination of seven ML algorithms, three attribute selection methods, and six different strategies for categorizing inhibitory activity. The investigation unveiled discernible trends distinguishing urease inhibitors from non-inhibitors. This differentiation enabled the identification of essential features that are crucial for precise classification. Through a comprehensive comparison of ML algorithms, tree-based methods like random forest, decision tree, and XGBoost exhibited superior performance. Additionally, incorporating the "chemical family type" attribute significantly enhanced model accuracy. Strategies involving a gray-zone categorization demonstrated marked improvements in predictive precision. This research underscores the transformative potential of ML in predicting urease inhibitors. The meticulous methodology outlined herein offers actionable insights for developing robust predictive models within biochemical systems.
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Affiliation(s)
- Natalia Morales
- Magíster en Ciencias de la Computación, Universidad Católica del Maule, Talca 3460000, Chile
| | - Elizabeth Valdés-Muñoz
- Doctorado en Biotecnología Traslacional, Centro de Biotecnología de los Recursos Naturales, Universidad Católica del Maule, Talca 3480094, Chile
| | - Jaime González
- Magíster en Ciencias de la Computación, Universidad Católica del Maule, Talca 3460000, Chile
| | | | - Jonathan M Palma
- Facultad de Ingeniería, Universidad de Talca, Curicó 3344158, Chile
| | - Christian Galarza
- Departamento de Matemáticas, Facultad de Ciencias Naturales y Matemáticas, Escuela Superior Politécnica del Litoral, Guayaquil EC090903, Ecuador
| | - Ángel Catagua-González
- Departamento de Matemáticas, Facultad de Ciencias Naturales y Matemáticas, Escuela Superior Politécnica del Litoral, Guayaquil EC090903, Ecuador
| | - Osvaldo Yáñez
- Núcleo de Investigación en Data Science, Facultad de Ingeniería y Negocios, Universidad de las Américas, Santiago 7500000, Chile
| | - Alfredo Pereira
- Facultad de Ingeniería, Arquitectura y Diseño, Universidad San Sebastián, Bellavista 7, Santiago 8420524, Chile
| | - Daniel Bustos
- Laboratorio de Bioinformática y Química Computacional, Departamento de Medicina Traslacional, Facultad de Medicina, Universidad Católica del Maule, Talca 3480094, Chile
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Paris E, Daza P, Tapia L, Díaz JP, Cruces Romero P, Castillo A, González C, Endeiza ML, Jofré L, Castro F, Zamorano A, Rodríguez J, Acevedo J, Santa Cruz T, González J, Escárate R, Moreno JP, Cisternas P. [Strategies and recommendations to face respiratory syncytial virus disease in 2024]. Andes Pediatr 2024; 95:17-23. [PMID: 38587340 DOI: 10.32641/andespediatr.v95i1.5055] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 01/09/2024] [Indexed: 04/09/2024]
Abstract
During the winter of 2023, Chile faced a complex situation related to the respiratory syncytial virus (RSV). After experiencing a decline in RSV circulation during the years of the SARS-CoV-2 pandemic, a late outbreak was observed in the spring of 2022 and an early onset of the outbreak in 2023, with a significant increase in the number of serious cases. The ineffectiveness of strategic planning and risk communication contributed to the complexity of the situation. To avoid the above next winter, measures such as active surveillance, unification of definitions for acute respiratory infections, identification of RSV variants, public education about infections and advance preparation regarding hospital beds and health personnel are suggested. The importance of immunization and intersectoral collaboration to acquire new preventive alternatives is highlighted, as well as the need for early communication about the importance of immunization and identification of high-risk groups, improvement in training of medical personnel and strategic planning of the Ministry of Health. seeking a proactive and collaborative approach to address the complex RSV situation in future winters. The Chilean Immunization Advisory Committee has already carried out an analysis and recommendation on a new prevention alternative. This working group will support any decision of the Ministry of Health in public policies that attempt a change in the paradigm of control of this disease for the health of the children of our country.
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Affiliation(s)
| | - Paula Daza
- Centro de Políticas Públicas e Innovación en Salud, Universidad del Desarrollo, Santiago, Chile
| | | | | | | | - Andrés Castillo
- Unidad Académica de Paciente Crítico Pediátrico, Pontificia Universidad Católica de Chile, Santiago, Chile
| | | | | | | | | | | | | | - Johanna Acevedo
- Instituto de Ciencias e Innovación en Medicina, Universidad del Desarrollo, Chile
| | | | | | | | - Juan Pablo Moreno
- Coordinación Proyecto Coalición Virus Sincicial Respiratorio, Santiago, Chile
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Gil-Díaz M, Álvarez-Aparicio J, Alonso J, Mancho C, Lobo MC, González J, García-Gonzalo P. Soil properties determine the impact of nZVI on Lactuca sativa L and its rhizosphere. Environ Pollut 2024; 341:122683. [PMID: 37827356 DOI: 10.1016/j.envpol.2023.122683] [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] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/08/2023] [Accepted: 10/02/2023] [Indexed: 10/14/2023]
Abstract
Nanoscale zero-valent iron (nZVI) is a promising material tool for the remediation of metal(loid)-contaminated soils since it reduces metal(loid) availability and plant uptake, thereby enhancing the development of the plants. However, the effects of nZVI as nanoparticles on soil properties, plants, and the microbial rhizosphere in unpolluted soils are poorly understood. Here we tested the impact of nZVI at different doses (0.5 and 5% of commercial suspension) on soil properties, lettuce plants, and their microbial rhizosphere in two non-contaminated soils with distinct physico-chemical properties (alkaline versus acidic soil). To this end, a pot experiment was performed with lettuce plants in a growth chamber for a month. Both soils showed an increase in of pH and available Fe after nZVI application. However, these effects were more marked in the acidic soil. In this regard, the plants in this soil showed increased biomass and Fe content. TEM analysis revealed that although the roots and leaves of plants grown in the alkaline soil showed better cell integrity than those in acidic soil-an observation that was consistent with the visual appearance of the plants-the former were more affected by the nZVI treatment. Regarding the microbial rhizosphere, in general, nZVI enhanced enzyme activity regardless of the soil type. Microbial functional diversity showed a significant decline in response to nZVI in alkaline soil. In contrast, the 0.5% nZVI treatment had a positive effect on this parameter in acidic soil. Bacterial genetic diversity was less affected by the presence of nZVI than fungal diversity, which was higher in nZVI-treated acidic soils. In addition, alterations of bacterial and fungal communities were associated with available Fe in acidic soil. In conclusion, soil properties play a key role in determining the effects of nZVI on lettuce plants and their rhizosphere.
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Affiliation(s)
- M Gil-Díaz
- IMIDRA - Instituto Madrileño de Investigación y Desarrollo Rural, Agrario y Alimentario, Finca "El Encín", Alcalá de Henares, 28805, Madrid, Spain.
| | - J Álvarez-Aparicio
- IMIDRA - Instituto Madrileño de Investigación y Desarrollo Rural, Agrario y Alimentario, Finca "El Encín", Alcalá de Henares, 28805, Madrid, Spain
| | - J Alonso
- IMIDRA - Instituto Madrileño de Investigación y Desarrollo Rural, Agrario y Alimentario, Finca "El Encín", Alcalá de Henares, 28805, Madrid, Spain
| | - C Mancho
- IMIDRA - Instituto Madrileño de Investigación y Desarrollo Rural, Agrario y Alimentario, Finca "El Encín", Alcalá de Henares, 28805, Madrid, Spain
| | - M C Lobo
- IMIDRA - Instituto Madrileño de Investigación y Desarrollo Rural, Agrario y Alimentario, Finca "El Encín", Alcalá de Henares, 28805, Madrid, Spain
| | - J González
- IMIDRA - Instituto Madrileño de Investigación y Desarrollo Rural, Agrario y Alimentario, Finca "El Encín", Alcalá de Henares, 28805, Madrid, Spain
| | - P García-Gonzalo
- IMIDRA - Instituto Madrileño de Investigación y Desarrollo Rural, Agrario y Alimentario, Finca "El Encín", Alcalá de Henares, 28805, Madrid, Spain
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González J, Stauber T. Author Correction: Ising superconductivity induced from spin-selective valley symmetry breaking in twisted trilayer graphene. Nat Commun 2023; 14:3491. [PMID: 37311741 DOI: 10.1038/s41467-023-39000-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023] Open
Affiliation(s)
- J González
- Instituto de Estructura de la Materia, CSIC, E-28006, Madrid, Spain.
| | - T Stauber
- Instituto de Ciencia de Materiales de Madrid, CSIC, E-28049, Madrid, Spain.
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González J, Stauber T. Ising superconductivity induced from spin-selective valley symmetry breaking in twisted trilayer graphene. Nat Commun 2023; 14:2746. [PMID: 37173312 PMCID: PMC10182018 DOI: 10.1038/s41467-023-38250-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 04/17/2023] [Indexed: 05/15/2023] Open
Abstract
We show that the e-e interaction induces a strong breakdown of valley symmetry for each spin channel in twisted trilayer graphene, leading to a ground state where the two spin projections have opposite sign of the valley symmetry breaking order parameter. This leads to a spin-valley locking in which the electrons of a Cooper pair are forced to live on different Fermi lines attached to opposite valleys. Furthermore, we find an effective intrinsic spin-orbit coupling explaining the protection of the superconductivity against in-plane magnetic fields. The effect of spin-selective valley symmetry breaking is validated as it reproduces the experimental observation of the reset of the Hall density at 2-hole doping. It also implies a breakdown of the symmetry of the bands from C6 to C3, with an enhancement of the anisotropy of the Fermi lines which is at the origin of a Kohn-Luttinger (pairing) instability. The isotropy of the bands is gradually recovered, however, when the Fermi level approaches the bottom of the second valence band, explaining why the superconductivity fades away in the doping range beyond 3 holes per moiré unit cell in twisted trilayer graphene.
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Affiliation(s)
- J González
- Instituto de Estructura de la Materia, CSIC, E-28006, Madrid, Spain.
| | - T Stauber
- Instituto de Ciencia de Materiales de Madrid, CSIC, E-28049, Madrid, Spain.
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7
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González J, Ghaffarinejad A, Ivanov M, Ferreira P, Vilarinho PM, Borrás A, Amorín H, Wicklein B. Advanced Cellulose-Nanocarbon Composite Films for High-Performance Triboelectric and Piezoelectric Nanogenerators. Nanomaterials (Basel) 2023; 13:1206. [PMID: 37049298 PMCID: PMC10097288 DOI: 10.3390/nano13071206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/21/2023] [Accepted: 03/25/2023] [Indexed: 06/19/2023]
Abstract
Natural polymers such as cellulose have interesting tribo- and piezoelectric properties for paper-based energy harvesters, but their low performance in providing sufficient output power is still an impediment to a wider deployment for IoT and other low-power applications. In this study, different types of celluloses were combined with nanosized carbon fillers to investigate their effect on the enhancement of the electrical properties in the final nanogenerator devices. Cellulose pulp (CP), microcrystalline cellulose (MCC) and cellulose nanofibers (CNFs) were blended with carbon black (CB), carbon nanotubes (CNTs) and graphene nanoplatelets (GNPs). The microstructure of the nanocomposite films was characterized by scanning electron and probe microscopies, and the electrical properties were measured macroscopically and at the local scale by piezoresponse force microscopy. The highest generated output voltage in triboelectric mode was obtained from MCC films with CNTs and CB, while the highest piezoelectric voltage was produced in CNF-CNT films. The obtained electrical responses were discussed in relation to the material properties. Analysis of the microscopic response shows that pulp has a higher local piezoelectric d33 coefficient (145 pC/N) than CNF (14 pC/N), while the macroscopic response is greatly influenced by the excitation mode and the effective orientation of the crystals relative to the mechanical stress. The increased electricity produced from cellulose nanocomposites may lead to more efficient and biodegradable nanogenerators.
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Affiliation(s)
- Jaime González
- Materials Science Institute of Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), 28049 Madrid, Spain
| | - Ali Ghaffarinejad
- Nanotechnology on Surfaces and Plasma Lab, Materials Science Institute of Seville (ICMS), Consejo Superior de Investigaciones Científicas (CSIC-US), 41092 Seville, Spain
| | - Maxim Ivanov
- CICECO-Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Paula Ferreira
- CICECO-Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Paula M Vilarinho
- CICECO-Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Ana Borrás
- Nanotechnology on Surfaces and Plasma Lab, Materials Science Institute of Seville (ICMS), Consejo Superior de Investigaciones Científicas (CSIC-US), 41092 Seville, Spain
| | - Harvey Amorín
- Materials Science Institute of Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), 28049 Madrid, Spain
| | - Bernd Wicklein
- Materials Science Institute of Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), 28049 Madrid, Spain
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González J, Ortiz A. Impact of Pilates mat-based exercises on knee kinematics during running. J Bodyw Mov Ther 2023; 33:8-13. [PMID: 36775530 PMCID: PMC10949884 DOI: 10.1016/j.jbmt.2022.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 04/13/2022] [Accepted: 09/17/2022] [Indexed: 10/14/2022]
Abstract
INTRODUCTION Core strengthening, balance, and flexibility programs such as Pilates have been advocated to positively impact running mechanics and prevent lower extremity injuries. The purpose of this study was to assess the effects of a 12-week mat-based Pilates exercise program on dynamic knee valgus alignment in runners. METHODS Thirty-four novice runners, including young male and female adults performed a running protocol at baseline. The protocol consisted of the participants running on a treadmill at a constant five miles per hour (mph) for 4 min. Post-examination, participants were randomly assigned to a Pilates or control group (n = 16 and n = 18, respectively). A certified Pilates instructor gave the Pilates group a 12-week home-based program. To ensure participants in the Pilates group performed exercises correctly, the Pilates instructor conducted the first session, and provided feedback to each participant. Participants in both groups performed the same running testing protocol every four weeks. Knee valgus was measured as the medial displacement of the knee joint center during the running stance phase. Repeated measures Analysis of Variance (RepANOVA) was calculated at baseline and 4-, 8-, and 12-weeks post examinations to compare knee valgus during running. RESULTS Although a reduction in dynamic knee valgus was observed within the Pilates group, the RepANOVA analysis revealed this change was not statistically significant. CONCLUSIONS Pilates mat-based exercises may improve knee valgus after 12 weeks but a larger sample size, longer intervention duration, or a supervised program should be considered for future research to evaluate its effectiveness.
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Affiliation(s)
- Jaime González
- Department of Physical Therapy, Midwestern University, Glendale, AZ, USA
| | - Alexis Ortiz
- Department of Physical Therapy, Augustana University, Sioux Falls, SD, USA.
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Targa A, Benítez I, Moncusí-Moix A, Vaca R, Gort-Paniello C, Minguez O, Santisteve S, Carmona P, Torres G, Labarca G, Caballero J, Barberà C, Torres A, González J, De Gonzalo-Calvo D, Barbé F. Sleep and circadian rest-activity pattern of critical COVID-19 survivors in the long-term: a 6-month follow-up study. Sleep Med 2022. [PMCID: PMC9300256 DOI: 10.1016/j.sleep.2022.05.250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Ortiz JA, Morales R, Lledó B, Vicente J, González J, García-Hernández E, Cascales A, Ten J, Bernabeu A, Bernabeu R. Application of machine learning to predict aneuploidy and mosaicism in embryos from in vitro fertilization (IVF) cycles. AJOG Global Reports 2022; 2:100103. [PMID: 36275401 PMCID: PMC9574883 DOI: 10.1016/j.xagr.2022.100103] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND OBJECTIVE STUDY DESIGN RESULTS CONCLUSION
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Molina A, González J, Laborda E. Applicability of Conventional Protocols for Benchmarking of Unidirectional and Bidirectional Multi-Electron Homogeneous Molecular Catalysts Beyond the Pure Kinetic Regime. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140934] [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: 11/03/2022]
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Chen L, Arellano U, Wang J, Balcázar L, Sotelo R, Solis S, Azomosa M, González J, González Vargas O, Song Y, Liu J, Zhou X. Oxygen defect, electron transfer and photocatalytic activity of Ag/CeO2/SBA-15 hybrid catalysts. Catal Today 2022. [DOI: 10.1016/j.cattod.2021.10.014] [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: 11/02/2022]
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Busca C, Sánchez-Conde M, Rico G, Rosas M, Valencia E, Moreno A, Moreno V, Martín-Carbonero L, Moreno S, Pérez-Valero I, Bernardino JI, Arribas JR, González J, Olveira A, Castillo P, Abadía M, Guerra L, Mendez C, Montes ML. Assessment of Noninvasive Markers of Steatosis and Liver Fibrosis in HIV-monoinfected Patients on Stable Antiretroviral Regimens. Open Forum Infect Dis 2022; 9:ofac279. [PMID: 35873289 PMCID: PMC9297309 DOI: 10.1093/ofid/ofac279] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 06/06/2022] [Indexed: 11/12/2022] Open
Abstract
Background Nonalcoholic fatty liver disease (NAFLD) is a major nonacquired immune deficiency syndrome-defining condition for persons with human immunodeficiency virus (PWH). We aimed to validate noninvasive tests for the diagnosis of NAFLD in PWH. Methods This is a cross-sectional study of PWH on stable antiretroviral therapy with persistently elevated transaminases and no known liver disease. The area under the receiver operating characteristic curve (AUROC) was calculated to compare the diagnostic accuracy of liver biopsy with abdominal ultrasound, transient elastography (TE) (including controlled attenuation parameter [CAP]), and noninvasive markers of steatosis (triglyceride and glucose index [TyG], hepatic steatosis index [HSI], fatty liver index [FLI]) and fibrosis ([FIB]-4, aminotransferase-to-platelet ratio index [APRI], NAFLD fibrosis score). We developed a diagnostic algorithm with serial combinations of markers. Results Of 146 patients with increased transaminase levels, 69 underwent liver biopsy (90% steatosis, 61% steatohepatitis, and 4% F ≥3). The AUROC for steatosis was as follows: ultrasound, 0.90 (0.75–1); CAP, 0.94 (0.88–1); FLI, 0.81 (0.58–1); HSI, 0.74 (0.62–0.87); and TyG, 0.75 (0.49–1). For liver fibrosis ≥F3, the AUROC for TE, APRI, FIB-4, and NAFLD fibrosis score was 0.92 (0.82–1), 0.96 (0.90–1), 0.97 (0.93–1), and 0.85 (0.68–1). Optimal diagnostic performance for liver steatosis was for 2 noninvasive combined models of tests with TyG and FLI/HSI as the first tests and ultrasound or CAP as the second tests: AUROC = 0.99 (0.97–1, P < .001) and 0.92 (0.77–1, P < .001). Conclusions Ultrasound and CAP performed best in diagnosing liver steatosis, and FLI, TyG, and HSI performed well. We propose an easy-to-implement algorithm with TyG or FLI as the first test and ultrasound or CAP as the second test to accurately diagnose or exclude NAFLD.
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Affiliation(s)
- C Busca
- Unidad de VIH, Servicio de Medicina Interna, Hospital Universitario La Paz , IdiPAZ, Madrid , Spain
| | - M Sánchez-Conde
- Unidad de VIH, Servicio Enfermedades Infecciosas, Hospital Ramón y Cajal , Madrid , Spain
| | - G Rico
- Unidad de VIH, Servicio de Medicina Interna, Hospital Universitario La Paz , IdiPAZ, Madrid , Spain
| | - Marta Rosas
- Unidad de VIH, Servicio Enfermedades Infecciosas, Hospital Ramón y Cajal , Madrid , Spain
| | - E Valencia
- Unidad de VIH, Servicio de Medicina Interna, Hospital Universitario La Paz , IdiPAZ, Madrid , Spain
| | - A Moreno
- Unidad de VIH, Servicio Enfermedades Infecciosas, Hospital Ramón y Cajal , Madrid , Spain
| | - V Moreno
- Unidad de VIH, Servicio de Medicina Interna, Hospital Universitario La Paz , IdiPAZ, Madrid , Spain
| | - L Martín-Carbonero
- Unidad de VIH, Servicio de Medicina Interna, Hospital Universitario La Paz , IdiPAZ, Madrid , Spain
| | - S Moreno
- Unidad de VIH, Servicio Enfermedades Infecciosas, Hospital Ramón y Cajal , Madrid , Spain
| | - I Pérez-Valero
- Unidad de VIH, Servicio de Medicina Interna, Hospital Universitario La Paz , IdiPAZ, Madrid , Spain
| | - JI Bernardino
- Unidad de VIH, Servicio de Medicina Interna, Hospital Universitario La Paz , IdiPAZ, Madrid , Spain
| | - JR Arribas
- Unidad de VIH, Servicio de Medicina Interna, Hospital Universitario La Paz , IdiPAZ, Madrid , Spain
| | - J González
- Unidad de VIH, Servicio de Medicina Interna, Hospital Universitario La Paz , IdiPAZ, Madrid , Spain
| | - A Olveira
- Unidad de hígado, Servicio de Anatomía Patológica, Hospital Universitario La Paz , Madrid , Spain
| | - P Castillo
- Unidad Hepatología, Servicio Gastroenterología, Hospital Universitario La Paz , Madrid , Spain
| | - M Abadía
- Unidad Hepatología, Servicio Gastroenterología, Hospital Universitario La Paz , Madrid , Spain
| | - L Guerra
- Unidad de hígado, Servicio de Anatomía Patológica, Hospital Universitario La Paz , Madrid , Spain
| | - C Mendez
- Unidad de hígado, Servicio de Anatomía Patológica, Hospital Universitario La Paz , Madrid , Spain
| | - ML Montes
- Unidad de VIH, Servicio de Medicina Interna, Hospital Universitario La Paz , IdiPAZ, Madrid , Spain
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14
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Urueña A, Badano MN, Baré P, González J, Vicentín R, Calli R, Cañero-Velasco MC, Fink S, Vizzotti C. Humoral and cellular immune memory response 12 years following single dose vaccination against hepatitis A in Argentinian children. Vaccine 2022; 40:114-121. [PMID: 34838323 DOI: 10.1016/j.vaccine.2021.11.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 11/07/2021] [Accepted: 11/11/2021] [Indexed: 01/01/2023]
Abstract
Infants' universal hepatitis A virus (HAV) single-dose vaccination has been highly effective for controlling HAV infection in Argentina, and in other Latin-American countries that adopted that strategy. Although antibodies wane over time, this has not been associated with HAV outbreaks or breakthrough infections, suggesting a relevant role for memory immunity. This study assessed long term humoral and cellular immune memory response after an average of 12 years follow-up of HAV single-dose vaccination. We selected 81 HAV-single dose vaccinated individuals from a 2015 study, including 54 with unprotective (UAL) and 27 with protective antibody levels (PAL) against HAV. Humoral memory response was assessed by measuring anti-HAV antibody titers at admission in both groups, and 30 days after a booster dose in the UAL group. Flow cytometry analysis of peripheral blood mononuclear cell samples stimulated with HAV antigen was performed in 47/81 individuals (21 with PAL, 26 with UAL) to identify activated CD4 + memory T cells or CD8 + memory T cells. The results showed that 48/52 (92%) individuals from UAL group who completed follow up reached protective levels after booster dose. In the PAL group, anti-HAV Abs waned in 2/27 (7%) individuals lacking seroprotection, while in 25/27 (93%) Abs remained >10 mUI/mL. HAV-specific memory CD4 + T cells were detected in 25/47 (53.2%) subjects while HAV-specific memory CD8 + T cells were observed in 16/47 (34.04%) individuals. HAV-specific memory CD4+ and CD8+ T cell responses were detected in 11/21 (52.4%) and in 9/21 (42.9%) subjects with PAL and in 14/26 (53.8%) and in 7/26 (26.9%) individuals with UAL, showing that the presence of memory T-cells was independent of the level or presence of anti-HAV antibodies. Long-term immunity demonstrated in the present work, including or not antibody persistence, suggests that individuals with waned Ab titers may still be protected and supports the single-dose HAV strategy.
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Affiliation(s)
- A Urueña
- ISALUD University, Centro de Estudios para la Prevención y Control de Enfermedades Transmisibles, Venezuela 931 C1095AAS, Ciudad Autónoma de Buenos Aires, Argentina.
| | - M N Badano
- Instituto de Medicina Experimental (IMEX)-CONICET. Academia Nacional de Medicina., Laboratorio de Patogenia de Infecciones Virales, Av. Gral. Las Heras 3092, C1425ASU Ciudad Autónoma de Buenos Aires, Argentina
| | - P Baré
- Instituto de Medicina Experimental (IMEX)-CONICET. Academia Nacional de Medicina., Laboratorio de Patogenia de Infecciones Virales, Av. Gral. Las Heras 3092, C1425ASU Ciudad Autónoma de Buenos Aires, Argentina
| | - J González
- INEI ANLIS "Dr. C. G. Malbrán", Laboratorio Nacional de Referencia para Hepatitis virales.Departamento Virología, Av. Vélez Sarsfield 601-637, C1282 AFG Ciudad Autónoma de Buenos Aires, Argentina
| | - R Vicentín
- Hospital de niños Orlando Alassia. Mendoza 4151, Ciudad de Santa Fe, Santa Fe, Argentina
| | - R Calli
- Dirección de Epidemiología, Ministerio de Salud Pública Provincia de Tucumán. 25 de Mayo 90, T4000 San Miguel de Tucumán, Tucumán, Argentina
| | - M C Cañero-Velasco
- Hospital Eva Perón de la Municipalidad de Merlo, Colón 502, Merlo, Provincia de Buenos Aires, Argentina
| | - S Fink
- Instituto de Medicina Experimental (IMEX)-CONICET. Academia Nacional de Medicina., Laboratorio de Patogenia de Infecciones Virales, Av. Gral. Las Heras 3092, C1425ASU Ciudad Autónoma de Buenos Aires, Argentina
| | - C Vizzotti
- ISALUD University, Centro de Estudios para la Prevención y Control de Enfermedades Transmisibles, Venezuela 931 C1095AAS, Ciudad Autónoma de Buenos Aires, Argentina
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15
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Laborda E, González J, Molina A. Nuances of the Voltammetry of Homogeneous Multi-Electron Molecular Catalysts: An Analytical Theory for Two-Electron Catalysis. J Catal 2022. [DOI: 10.1016/j.jcat.2022.01.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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16
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González J, Laborda E, Molina A. Analytical Modelling of Electron‐coupled Ion Transfers with Immobilized
vs
Soluble Redox Transducer at Thick Film‐modified Electrodes. ELECTROANAL 2021. [DOI: 10.1002/elan.202100234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- J. González
- Departamento de Química Física Facultad de Química Regional Campus of International Excellence “Campus Mare Nostrum” Universidad de Murcia 30100 Murcia Spain
| | - E. Laborda
- Departamento de Química Física Facultad de Química Regional Campus of International Excellence “Campus Mare Nostrum” Universidad de Murcia 30100 Murcia Spain
| | - A. Molina
- Departamento de Química Física Facultad de Química Regional Campus of International Excellence “Campus Mare Nostrum” Universidad de Murcia 30100 Murcia Spain
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17
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Asencio JM, González J, Herranz-Amo F, Hernández-Fernández C. Retrohepatic inferior vena cava control through an anterior approach in cases of renal cell carcinoma with level IIIa tumor thrombus: Step-by-step description. Actas Urol Esp 2021; 45:587-596. [PMID: 34697007 DOI: 10.1016/j.acuroe.2021.04.012] [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: 04/13/2021] [Accepted: 04/18/2021] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To evaluate the safety and efficacy of the retrohepatic inferior vena cava control through an anterior approach (RIVCA) technique in renal cell carcinoma (RCC) with level IIIa tumor thrombus. PATIENTS AND METHODS Initial series of 6 cases presenting RCC and level IIIa tumor thrombus who underwent radical nephrectomy and tumor thrombectomy using the RIVCA technique between 2018-2019. RIVCA technique aims to gain complete control of the retrohepatic inferior vena cava above the cranial end of the tumor thrombus, but excluding the major hepatic veins in order to preserve the natural hepato-caval shunt. A step-by-step description of the procedure is provided. Disease features, operative characteristics, and surgical outcomes were registered prospectively. RESULTS Radical nephrectomy and tumor thrombectomy were completed in all cases. RIVCA technique did not increase operative time significantly (range: 14-22 min). Mean estimated blood loss was 325 cc (range: 250-400). Blood transfusion was not required intraoperatively in any of the cases. Mean postoperative transfusion rate was 1.3 red blood cells packed units (range: 0-2). There were no cases of intraoperative pulmonary embolism or major complications (Clavien-Dindo III-V) in the period of 30 days postoperatively. Median postoperative length of stay was 8 days (range: 5-11). CONCLUSIONS The RIVCA technique applied to cases of RCC and level IIIa tumor thrombus provides complete control of the retrohepatic inferior vena cava above the tumor thrombus cranial end, while prevents intraoperative hemodynamic instability by maintaining cardiac preload through the porto-caval shunt. This technique may limit operative morbidity (intraoperative pulmonary embolism and massive hemorrhage), thus becoming a helpful adjunct to be used in cases of RCC with level IIIa tumor thrombus.
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Affiliation(s)
- J M Asencio
- Sección de Cirugía Hepato-Bilio-Pancreática, Unidad de Trasplante Hepático, Servicio de Cirugía General y Aparato Digestivo, Hospital General Universitario Gregorio Marañón, Madrid, Spain; Universidad Complutense de Madrid, Madrid, Spain.
| | - J González
- Servicio de Urología, Hospital Universitario Gregorio Marañón, Madrid, Spain; Unidad de Trasplante Renal, Hospital Universitario Gregorio Marañón, Madrid, Spain
| | - F Herranz-Amo
- Servicio de Urología, Hospital Universitario Gregorio Marañón, Madrid, Spain; Unidad de Trasplante Renal, Hospital Universitario Gregorio Marañón, Madrid, Spain
| | - C Hernández-Fernández
- Universidad Complutense de Madrid, Madrid, Spain; Servicio de Urología, Hospital Universitario Gregorio Marañón, Madrid, Spain
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18
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González J, Laborda E, Serna C, Torralba E, Molina A. Steady state voltammetry of charge transfer processes with nonunity electrode reaction orders. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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19
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Ortiz JA, Morales R, Lledo B, Garcia-Hernandez E, Cascales A, Vicente JA, González J, Ten J, Bernabeu A, Llácer J, Bernabeu R. O-203 Application of machine learning to predict aneuploidy and mosaicism in embryos from in vitro fertilization (IVF) cycles. Hum Reprod 2021. [DOI: 10.1093/humrep/deab128.014] [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: 11/13/2022] Open
Abstract
Abstract
Study question
Is it possible to predict the likelihood of an IVF embryo being aneuploid and/or mosaic using a machine learning algorithm?
Summary answer
There are paternal, maternal, embryonic and IVF-cycle factors that are associated with embryonic chromosomal status that can be used as predictors in machine learning models.
What is known already
The factors associated with embryonic aneuploidy have been extensively studied. Mostly maternal age and to a lesser extent male factor and ovarian stimulation have been related to the occurrence of chromosomal alterations in the embryo.
On the other hand, the main factors that may increase the incidence of embryo mosaicism have not yet been established.
The models obtained using classical statistical methods to predict embryonic aneuploidy and mosaicism are not of high reliability. As an alternative to traditional methods, different machine and deep learning algorithms are being used to generate predictive models in different areas of medicine, including human reproduction.
Study design, size, duration
The study design is observational and retrospective. A total of 4654 embryos from 1558 PGT-A cycles were included (January-2017 to December-2020). The trophoectoderm biopsies on D5, D6 or D7 blastocysts were analysed by NGS. Embryos with ≤25% aneuploid cells were considered euploid, between 25-50% were classified as mosaic and aneuploid with >50%.
The variables of the PGT-A were recorded in a database from which predictive models of embryonic aneuploidy and mosaicism were developed.
Participants/materials, setting, methods
The main indications for PGT-A were advanced maternal age, abnormal sperm FISH and recurrent miscarriage or implantation failure. Embryo analysis were performed using Veriseq-NGS (Illumina).
The software used to carry out all the analysis was R (RStudio). The library used to implement the different algorithms was caret. In the machine learning models, 22 predictor variables were introduced, which can be classified into 4 categories: maternal, paternal, embryonic and those specific to the IVF cycle.
Main results and the role of chance
The different couple, embryo and stimulation cycle variables were recorded in a database (22 predictor variables). Two different predictive models were performed, one for aneuploidy and the other for mosaicism. The predictor variable was of multi-class type since it included the segmental and whole chromosome alteration categories.
The dataframe were first preprocessed and the different classes to be predicted were balanced. A 80% of the data were used for training the model and 20% were reserved for further testing. The classification algorithms applied include multinomial regression, neural networks, support vector machines, neighborhood-based methods, classification trees, gradient boosting, ensemble methods, Bayesian and discriminant analysis-based methods. The algorithms were optimized by minimizing the Log_Loss that measures accuracy but penalizing misclassifications.
The best predictive models were achieved with the XG-Boost and random forest algorithms. The AUC of the predictive model
for aneuploidy was 80.8% (Log_Loss
1.028) and for mosaicism 84.1% (Log_Loss: 0.929). The best predictor variables of the models were maternal age, embryo quality, day of biopsy and whether or not the couple had a history of pregnancies with chromosomopathies. The male factor only played a relevant role in the mosaicism model but not in the aneuploidy model.
Limitations, reasons for caution
Although the predictive models obtained can be very useful to know the probabilities of achieving euploid embryos in an IVF cycle, increasing the sample size and including additional variables could improve the models and thus increase their predictive capacity.
Wider implications of the findings
Machine learning can be a very useful tool in reproductive medicine since it can allow the determination of factors associated with embryonic aneuploidies and mosaicism in order to establish a predictive model for both. To identify couples at risk of embryo aneuploidy/mosaicism could benefit them of the use of PGT-A.
Trial registration number
Not Applicable
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Affiliation(s)
- J A Ortiz
- Instituto Bernabeu, Biología Molecular y Genética, Alicante, Spain
| | - R Morales
- Instituto Bernabeu, Biología Molecular y Genética, Alicante, Spain
| | - B Lledo
- Instituto Bernabeu, Biología Molecular y Genética, Alicante, Spain
| | | | - A Cascales
- Instituto Bernabeu, Biología Molecular y Genética, Alicante, Spain
| | - J A Vicente
- Universidad Nacional de Educacion a Distancia UNED, Economía Aplicada y Estadística, Madrid, Spain
| | - J González
- Universidad Nacional de Educacion a Distancia UNED, Economía de la Empresa y Contabilidad, Madrid, Spain
| | - J Ten
- Instituto Bernabeu, Embriología, Alicante, Spain
| | - A Bernabeu
- Instituto Bernabeu, Medicina Reproductiva, Alicante, Spain
| | - J Llácer
- Instituto Bernabeu, Medicina Reproductiva, Alicante, Spain
| | - R Bernabeu
- Instituto Bernabeu, Medicina Reproductiva, Alicante, Spain
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20
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Asencio JM, González J, Herranz-Amo F, Hernández-Fernández C. Retrohepatic inferior vena cava control through an anterior approach in cases of renal cell carcinoma with level iiia tumor thrombus: Step-by-step description. Actas Urol Esp 2021; 45:S0210-4806(21)00101-7. [PMID: 34334240 DOI: 10.1016/j.acuro.2021.04.004] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 04/18/2021] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To evaluate the safety and efficacy of the retrohepatic inferior vena cava control through an anterior approach (RIVCA) technique in renal cell carcinoma (RCC) with level iiia tumor thrombus. PATIENTS AND METHODS Initial series of 6 cases presenting RCC and level iiia tumor thrombus who underwent radical nephrectomy and tumor thrombectomy using the RIVCA technique between 2018-2019. RIVCA technique aims to gain complete control of the retrohepatic inferior vena cava above the cranial end of the tumor thrombus, but excluding the major hepatic veins in order to preserve the natural hepato-caval shunt. A step-by-step description of the procedure is provided. Disease features, operative characteristics, and surgical outcomes were registered prospectively. RESULTS Radical nephrectomy and tumor thrombectomy were completed in all cases. RIVCA technique did not increase operative time significantly (range: 14-22min). Mean estimated blood loss was 325cc (range: 250-400). Blood transfusion was not required intraoperatively in any of the cases. Mean postoperative transfusion rate was 1.3 red blood cells packed units (range: 0-2). There were no cases of intraoperative pulmonary embolism or major complications (Clavien-Dindo III-V) in the period of 30 days postoperatively. Median postoperative length of stay was 8 days (range: 5-11). CONCLUSIONS The RIVCA technique applied to cases of RCC and level iiia tumor thrombus provides complete control of the retrohepatic inferior vena cava above the tumor thrombus cranial end, while prevents intraoperative hemodynamic instability by maintaining cardiac preload through the porto-caval shunt. This technique may limit operative morbidity (intraoperative pulmonary embolism and massive hemorrhage), thus becoming a helpful adjunct to be used in cases of RCC with level iiia tumor thrombus.
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Affiliation(s)
- J M Asencio
- Sección de Cirugía Hepato-Bilio-Pancreática, Unidad de Trasplante Hepático, Servicio de Cirugía General y Aparato Digestivo, Hospital General Universitario Gregorio Marañón, Madrid, España; Universidad Complutense de Madrid, Madrid, España.
| | - J González
- Servicio de Urología, Hospital Universitario Gregorio Marañón, Madrid, España; Unidad de Trasplante Renal, Hospital Universitario Gregorio Marañón, Madrid, España
| | - F Herranz-Amo
- Servicio de Urología, Hospital Universitario Gregorio Marañón, Madrid, España; Unidad de Trasplante Renal, Hospital Universitario Gregorio Marañón, Madrid, España
| | - C Hernández-Fernández
- Universidad Complutense de Madrid, Madrid, España; Servicio de Urología, Hospital Universitario Gregorio Marañón, Madrid, España
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21
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González MG, González J, Valcárcel F, Sánchez M, Tercero JM, Barrios L, Olmeda AS. Seasonal Dynamics of Fleas (Siphonaptera: Pulicidae, Ceratophyllidae and Leptopsyllidae) on Oryctolagus cuniculus in a Meso-Mediterranean Area of Central Spain. J Med Entomol 2021; 58:1740-1749. [PMID: 33822180 DOI: 10.1093/jme/tjab033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Indexed: 06/12/2023]
Abstract
Flea infestations of wild rabbits were examined monthly in central Spain in a meso-Mediterranean area for 5 yr. A total of 1,180 wild rabbits were trapped and 7,022 fleas were collected from them. Overall, the prevalence was 74.1% with a mean flea index of 5.95 fleas per rabbit. Four flea species were identified: Spilopsyllus cuniculi (Dale, 1878) was the most abundant species (accounting for 74.3% of fleas collected) followed by Xenopsylla cunicularis (Smit, 1957), Odontopsyllus quirosi (Gil Collado, 1934), and Nosopsyllus fasciatus (Bosc, 1800) (18.9, 6.7, and 0.1%, respectively). The highest prevalence was observed in S. cuniculi (48.6%) followed by X. cunicularis, O. quirosi, and N. fasciatus (34.3, 20.0, and 0.6%, respectively). Odontopsyllus quirosi and S. cuniculi were mainly collected from autumn to spring with the peak of infestation in winter, while X. cunicularis was mainly found from spring to autumn with maximum levels of infestation during the summer months. The relevance of these findings is discussed.
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Affiliation(s)
- M G González
- Villamagna S.A., Finca 'La Garganta', 14440 Villanueva de Córdoba, Spain
- Grupo de Parasitología Animal, Animalario del Departamento de Reproducción Animal, INIA, Madrid, Spain
| | - J González
- Villamagna S.A., Finca 'La Garganta', 14440 Villanueva de Córdoba, Spain
- Center for Vector Biology, Department of Entomology, Rutgers University, New Brunswick, NJ, USA
| | - F Valcárcel
- Grupo de Parasitología Animal, Animalario del Departamento de Reproducción Animal, INIA, Madrid, Spain
| | - M Sánchez
- Villamagna S.A., Finca 'La Garganta', 14440 Villanueva de Córdoba, Spain
- Grupo de Parasitología Animal, Animalario del Departamento de Reproducción Animal, INIA, Madrid, Spain
| | - J M Tercero
- Villamagna S.A., Finca 'La Garganta', 14440 Villanueva de Córdoba, Spain
| | - L Barrios
- Statistics Department, Computing Center, CSIC, Madrid, Spain
| | - A S Olmeda
- Departamento de Sanidad Animal, Facultad de Veterinaria, UCM, Madrid, Spain
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22
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Jue J, Alameddine M, González J, Ciancio G. Risk factors, management, and survival of bladder cancer after kidney transplantation. Actas Urol Esp 2021. [PMID: 33994047 DOI: 10.1016/j.acuro.2020.09.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
INTRODUCTION AND OBJECTIVES Kidney transplantation is associated with an increased risk of bladder cancer; however guidelines have not been established on the management of bladder cancer after kidney transplantation. MATERIALS AND METHODS A systematic literature review using PubMed was performed in accordance with the PRISMA statement to identify studies concerning the prevalence and survival of bladder cancer after kidney transplantation. The risk factors and management of bladder cancer after kidney transplantation were also reviewed and discussed. RESULTS A total of 41 studies, published between 1996 and 2018, reporting primary data on bladder cancer after kidney transplantation were identified. Marked heterogeneity in bladder cancer prevalence, time to diagnosis, non-muscle invasive/muscle-invasive bladder cancer prevalence, and survival was noted. Four studies, published between 2003 and 2017, reporting primary data on bladder cancer treated with Bacillus Calmette-Guérin (BCG) after kidney transplantation were identified. Disease-free survival, cancer-specific survival, and overall survival were similar between BCG studies (75-100%). CONCLUSIONS Carcinogen exposure that led to ESRD, BKV, HPV, immunosuppressive agents, and the immunosuppressed state likely contribute to the increased risk of bladder cancer after renal transplantation. Non-muscle invasive disease should be treated with transurethral resection. BCG can be safely used in transplant recipients and likely improves the disease course. Muscle-invasive disease should be treated with radical cystectomy, with special consideration to the dissection and urinary diversion choice. Chemotherapy and immune checkpoint inhibitors can be safely used in regionally advanced bladder cancer with potential benefit. mTOR inhibitors may reduce the risk of developing bladder cancer, and immunosuppression medications should be reduced if malignancy develops.
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23
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Gallego-Parra S, Vilaplana R, Gomis O, Lora da Silva E, Otero-de-la-Roza A, Rodríguez-Hernández P, Muñoz A, González J, Sans JA, Cuenca-Gotor VP, Ibáñez J, Popescu C, Manjón FJ. Structural, vibrational and electronic properties of α'-Ga 2S 3 under compression. Phys Chem Chem Phys 2021; 23:6841-6862. [PMID: 33725033 DOI: 10.1039/d0cp06417c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We report a joint experimental and theoretical study of the low-pressure phase of α'-Ga2S3 under compression. Theoretical ab initio calculations have been compared to X-ray diffraction and Raman scattering measurements under high pressure carried out up to 17.5 and 16.1 GPa, respectively. In addition, we report Raman scattering measurements of α'-Ga2S3 at high temperature that have allowed us to study its anharmonic properties. To understand better the compression of this compound, we have evaluated the topological properties of the electron density, the electron localization function, and the electronic properties as a function of pressure. As a result, we shed light on the role of the Ga-S bonds, the van der Waals interactions inside the channels of the crystalline structure, and the single and double lone electron pairs of the sulphur atoms in the anisotropic compression of α'-Ga2S3. We found that the structural channels are responsible for the anisotropic properties of α'-Ga2S3 and the A'(6) phonon, known as the breathing mode and associated with these channels, exhibits the highest anharmonic behaviour. Finally, we report calculations of the electronic band structure of α'-Ga2S3 at different pressures and find a nonlinear pressure behaviour of the direct band gap and a pressure-induced direct-to-indirect band gap crossover that is similar to the behaviour previously reported in other ordered-vacancy compounds, including β-Ga2Se3. The importance of the single and, more specially, the double lone electron pairs of sulphur in the pressure dependence of the topmost valence band of α'-Ga2S3 is stressed.
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Affiliation(s)
- S Gallego-Parra
- Instituto de Diseño para la Fabricación y Producción Automatizada, MALTA Consolider Team, Universitat Politècnica de València, 46022 València, Spain.
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24
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González J, Salvador M, Özkaya Ö, Spick M, Reid K, Costa C, Bailey MJ, Avignone Rossa C, Kümmerli R, Jiménez JI. Loss of a pyoverdine secondary receptor in Pseudomonas aeruginosa results in a fitter strain suitable for population invasion. ISME J 2020; 15:1330-1343. [PMID: 33323977 DOI: 10.1038/s41396-020-00853-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 11/03/2020] [Accepted: 11/20/2020] [Indexed: 01/27/2023]
Abstract
The rapid emergence of antibiotic resistant bacterial pathogens constitutes a critical problem in healthcare and requires the development of novel treatments. Potential strategies include the exploitation of microbial social interactions based on public goods, which are produced at a fitness cost by cooperative microorganisms, but can be exploited by cheaters that do not produce these goods. Cheater invasion has been proposed as a 'Trojan horse' approach to infiltrate pathogen populations with strains deploying built-in weaknesses (e.g., sensitiveness to antibiotics). However, previous attempts have been often unsuccessful because population invasion by cheaters was prevented by various mechanisms including the presence of spatial structure (e.g., growth in biofilms), which limits the diffusion and exploitation of public goods. Here we followed an alternative approach and examined whether the manipulation of public good uptake and not its production could result in potential 'Trojan horses' suitable for population invasion. We focused on the siderophore pyoverdine produced by the human pathogen Pseudomonas aeruginosa MPAO1 and manipulated its uptake by deleting and/or overexpressing the pyoverdine primary (FpvA) and secondary (FpvB) receptors. We found that receptor synthesis feeds back on pyoverdine production and uptake rates, which led to strains with altered pyoverdine-associated costs and benefits. Moreover, we found that the receptor FpvB was advantageous under iron-limited conditions but revealed hidden costs in the presence of an antibiotic stressor (gentamicin). As a consequence, FpvB mutants became the fittest strain under gentamicin exposure, displacing the wildtype in liquid cultures, and in biofilms and during infections of the wax moth larvae Galleria mellonella, which both represent structured environments. Our findings reveal that an evolutionary trade-off associated with the costs and benefits of a versatile pyoverdine uptake strategy can be harnessed for devising a Trojan-horse candidate for medical interventions.
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Affiliation(s)
- Jaime González
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, GU2 7XH, UK
| | - Manuel Salvador
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, GU2 7XH, UK
| | - Özhan Özkaya
- Department of Quantitative Medicine, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - Matt Spick
- Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, GU2 7XH, UK
| | - Kate Reid
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, GU2 7XH, UK
| | - Catia Costa
- Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, GU2 7XH, UK
| | - Melanie J Bailey
- Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, GU2 7XH, UK
| | | | - Rolf Kümmerli
- Department of Quantitative Medicine, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - José I Jiménez
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, GU2 7XH, UK. .,Department of Life Sciences, Imperial College London, London, SW7 2AZ, UK.
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González-Perdomo P, González J, Martínez-Otero D, Unnamatla MVB, García-Eleno MA, Corona-Becerril D, Cuevas-Yañez E. Synthesis of 3-alkyl-1,2,3-triazol-1-ium hydrogen sulphate derivatives. Journal of Chemical Research 2020. [DOI: 10.1177/1747519820978620] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
An array of 3-alkyl-1,2,3-triazol-1-ium hydrogen sulphate derivatives was obtained from the reaction between some 1,4-disubstituted-1,2,3-triazoles and H2SO4 through a simple protocol in good yields. The molecular structure of a triazolium salt (R1 = PhCH2, R2 = CH2O(4-CHO)C6H4) was unambiguously determined from X-ray diffraction studies, showing a remarkable triazole N3–H bond.
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Affiliation(s)
- Pilar González-Perdomo
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Universidad Autónoma del Estado de México, Toluca, México
| | - Jaime González
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Universidad Autónoma del Estado de México, Toluca, México
| | - Diego Martínez-Otero
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Universidad Autónoma del Estado de México, Toluca, México
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior S. N., Ciudad Universitaria, Coyoacán, México
| | - MV Basavanag Unnamatla
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Universidad Autónoma del Estado de México, Toluca, México
- Facultad de Química, Universidad Autónoma del Estado de México, Paseo Colón esq. Paseo Tollocan, Toluca, México
| | - Marco A García-Eleno
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Universidad Autónoma del Estado de México, Toluca, México
- Facultad de Química, Universidad Autónoma del Estado de México, Paseo Colón esq. Paseo Tollocan, Toluca, México
| | - David Corona-Becerril
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Universidad Autónoma del Estado de México, Toluca, México
- Facultad de Química, Universidad Autónoma del Estado de México, Paseo Colón esq. Paseo Tollocan, Toluca, México
| | - Erick Cuevas-Yañez
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Universidad Autónoma del Estado de México, Toluca, México
- Facultad de Química, Universidad Autónoma del Estado de México, Paseo Colón esq. Paseo Tollocan, Toluca, México
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Poblete T, Rebolledo K, Barrera C, Ulloa D, Valenzuela M, Valenzuela C, Pavez E, Mendoza R, Narbona C, González J, Estevez S, Ortega R, González C. EFFECT OF GERMINATION AND COOKING ON IRON CONTENT, PHYTIC ACID AND LECTINS OF FOUR VARIETIES OF CHILEAN BEANS ( Phaseolus Vulgaris ). J Chil Chem Soc 2020. [DOI: 10.4067/s0717-97072020000404937] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Gómez Rivas J, Rodríguez-Serrano A, Loeb S, Yuen-Chun Teoh J, Ribal M, Bloemberg J, Catto J, N’Dow J, van Poppel H, González J, Esteban M, Rodriguez Socarrás M. Telemedicine and smart working: Spanish adaptation of the European Association of Urology recommendations. Actas Urológicas Españolas (English Edition) 2020. [PMCID: PMC7688266 DOI: 10.1016/j.acuroe.2020.08.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Introduction Telemedicine provides remote clinical support through technology tools. It can facilitate medical care delivery while reducing unnecessary office visits. The COVID-19 outbreak has caused an abrupt change in our daily urological practice, where teleconsultations play a crucial role. Objective To provide practical recommendations for the effective use of technological tools in telemedicine. Materials and methods A literature search was conducted on Medline until April 2020. We selected the most relevant articles related to “telemedicine” and “smart working” that could provide valuable information. Results Telemedicine refers to the use of electronic information and telecommunication tools to provide remote clinical health care support. Smart working is a working approach that uses new or existing technologies to improve performance. Telemedicine is becoming a useful and fundamental tool during the COVID-19 pandemic and will be even more in the future. It is time for us to officially give telemedicine the place it deserves in clinical practice, and it is our responsibility to adapt and familiarize with all the tools and possible strategies for its optimal implementation. We must guarantee that the quality of care received by patients and perceived by them and their families is of the highest standard. Conclusions Telemedicine facilitates remote specialized urological clinical support and solves problems caused by limited patient mobility or transfer, reduces unnecessary visits to clinics and is useful to reduce the risk of COVID-19 viral transmission.
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Gómez Rivas J, Rodríguez-Serrano A, Loeb S, Yuen-Chun Teoh J, Ribal M, Bloemberg J, Catto J, ŃDow J, van Poppel H, González J, Esteban M, Rodriguez Socarrás M. Telemedicine and smart working: Spanish adaptation of the European Association of Urology recommendations. Actas Urol Esp 2020; 44:644-652. [PMID: 33012592 PMCID: PMC7486047 DOI: 10.1016/j.acuro.2020.08.010] [Citation(s) in RCA: 3] [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] [Received: 08/01/2020] [Accepted: 08/22/2020] [Indexed: 01/16/2023]
Abstract
Introducción La telemedicina ofrece un soporte clínico remoto utilizando herramientas tecnológicas. Puede facilitar la atención médica al tiempo que reduce las visitas innecesarias a la consulta. La pandemia COVID-19 ha provocado un cambio brusco en nuestra práctica urológica diaria convirtiéndose en algo muy necesario el acto de la teleconsulta. Objetivo Proporcionar recomendaciones prácticas para el uso efectivo de herramientas tecnológicas en telemedicina. Materiales y métodos Se realizó una búsqueda en la literatura en la plataforma Medline hasta abril de 2020; seleccionamos los artículos más relevantes relacionados con «telemedicina» y «trabajo inteligente» que podrían proporcionar información útil. Resultados La telemedicina se refiere al uso de la información electrónica y a las herramientas de telecomunicaciones para proporcionar apoyo clínico remoto a la atención médica. El trabajo inteligente es un modelo de trabajo que utiliza tecnologías nuevas o existentes para mejorar el rendimiento. La telemedicina se está convirtiendo en una herramienta útil y necesaria durante la pandemia COVID-19 e incluso más allá de la misma. Es hora de que formalicemos y demos el lugar que se merece a la telemedicina en nuestra práctica clínica y es nuestra responsabilidad adaptar y conocer todas las herramientas y posibles estrategias para su implementación de una manera óptima, garantizar una atención de calidad a los pacientes y que dicha atención sea percibida por pacientes y familiares como de alto nivel. Conclusiones La telemedicina facilita la atención clínica urológica especializada a distancia y resuelve problemas como las limitaciones en la movilidad o el traslado de los pacientes, reduce las visitas innecesarias a las clínicas y es útil para reducir el riesgo de transmisión viral de la COVID-19.
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Alexander A, Serena G, González J, DeFaria W, Ciancio G. Renal transplantation using vascular conduit reconstruction in deceased kidneys with multiple renal arteries and short renal veins. Actas Urol Esp 2020; 44:623-629. [PMID: 32534829 DOI: 10.1016/j.acuro.2020.01.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 01/24/2020] [Indexed: 11/25/2022]
Abstract
BACKGROUND Transplantation of kidneys with vascular anatomical variants remains a challenge. Due to its varying success in regard to graft function after transplantation, these organs have been frequently discarded assuming in advance an unaffordable rate of vascular complications. PATIENTS AND METHODS We performed three kidney transplants using organs from deceased donors harboring vascular variants (multiple arteries and short veins), including an unsplittable horseshoe kidney. Different grafts harvested from the same donor aorta, common iliac artery, and inferior vena cava, were used to reconstruct the initial vascular configuration by creating single arterial and venous conduits aimed to simplify the vascular anastomoses in the recipient. RESULTS No post-operative complications were recorded. Warm ischemia times remained comparable to single artery renal allografts. No delayed graft function was noted in any case, and every patient regained normal renal function after transplantation. CONCLUSIONS Vascular reconstruction using arterial and venous grafts harvested from the same deceased donor may result a helpful tool to simplify vascular anastomoses during transplantation surgery, thus avoiding their discard in advance, minimizing perioperative complications, and enabling normal graft function rates in the long-term follow-up. The successful outcome obtained by using this approach would help to expand the donor criteria for the inclusion of organs containing vascular anatomical variants.
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Bouza E, Brenes FJ, Díez Domingo J, Eiros Bouza JM, González J, Gracia D, Juárez González R, Muñoz P, Petidier Torregrossa R, Ribera Casado JM, Ramos Cordero P, Rodríguez Rovira E, Sáez Torralba ME, Serra Rexach JA, Tovar García J, Verdejo Bravo C, Palomo E. The situation of infection in the elderly in Spain: a multidisciplinary opinion document. Rev Esp Quimioter 2020; 33:327-349. [PMID: 32896115 PMCID: PMC7528417 DOI: 10.37201/req/057.2020] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 06/29/2020] [Accepted: 07/14/2020] [Indexed: 11/10/2022]
Abstract
Infection in the elderly is a huge issue whose treatment usually has partial and specific approaches. It is, moreover, one of the areas where intervention can have the most success in improving the quality of life of older patients. In an attempt to give the widest possible focus to this issue, the Health Sciences Foundation has convened experts from different areas to produce this position paper on Infection in the Elderly, so as to compare the opinions of expert doctors and nurses, pharmacists, journalists, representatives of elderly associations and concluding with the ethical aspects raised by the issue. The format is that of discussion of a series of pre-formulated questions that were discussed by all those present. We begin by discussing the concept of the elderly, the reasons for their predisposition to infection, the most frequent infections and their causes, and the workload and economic burden they place on society. We also considered whether we had the data to estimate the proportion of these infections that could be reduced by specific programmes, including vaccination programmes. In this context, the limited presence of this issue in the media, the position of scientific societies and patient associations on the issue and the ethical aspects raised by all this were discussed.
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Affiliation(s)
- E Bouza
- Emilio Bouza, Instituto de Investigación Sanitaria Gregorio Marañón. C/ Dr. Esquerdo, 46 28007 Madrid, Spain.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - E Palomo
- Esteban Palomo, Director. Health Sciences Foundation. C/ Severo Ochoa 2 - 28760 Tres Cantos. Madrid. Phone +34 91 3530150
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Pardo J, González J, Aymar N, Ortiz I, Rodriguez B, Morera D, Guerrero A, Mena AM, Font J. Statistical control of processes applied to geometric uncertainties for CTV expansion margins determination in prostate cancer patients treated with VMAT: a prospective study in 57 patients. Clin Transl Oncol 2020; 23:1078-1084. [PMID: 32981004 DOI: 10.1007/s12094-020-02493-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 09/03/2020] [Indexed: 10/23/2022]
Abstract
PURPOSE To study the control graphs applicability for the geometric uncertainties of VMAT treatments in prostate cancer patients, and their use to verify the hypothesis of the data obtained randomness, to apply the margins of Van Herk expression. MATERIAL AND METHODS During the first 5 days of treatment, and then once a week, a Kv CBCT was performed, compared with the simulation CT and adjusted the displacements, to determine the inter-fraction errors. Immediately after radiation therapy, another CBCT was performed (for intra-fraction errors). With these data, the X, R position control charts have been made. The patients, not maintained the deviations within the charts control limits, were called "anomalies". Then, we compared the deviations and margins calculated with the van Herk expression for all patients and for those without anomalies. RESULTS The margins determined show appreciable differences if there were calculated for the total set of patients or for the set of them without anomalies in the control charts. For the overall set of patients, the lateral, longitudinal, and vertical margins were 0.45 cm, 0.52 cm, 0.56 cm, while for the set of patients without anomalies were 0.29 cm, 0.35 cm, and 0.38 cm. CONCLUSIONS The use of control charts allows tracking geometric deviations both inter and intra-fraction, variability real-time control and to detect situations in which it can change for non-random reasons, and require immediate investigation. Maintaining geometric deviations in the control state decreases the margins needed to administer a high dose to CTV in a high percentage of cancer prostate patients.
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Affiliation(s)
- J Pardo
- Radiation Oncology Department, Hospital Universitari Son Espases, Carretera de Valldemossa 79, 07020, Palma de Mallorca, Spain. .,Hospital Universitari General de Catalunya, Sant Cugat del Vallès, Spain. .,Institut d'Investigació Sanitaria Illes Balears, IdISBA, Palma de Mallorca, Spain.
| | - J González
- Hospital Universitari General de Catalunya, Sant Cugat del Vallès, Spain
| | - N Aymar
- Radiation Oncology Department, Hospital Universitari Son Espases, Carretera de Valldemossa 79, 07020, Palma de Mallorca, Spain.,Institut d'Investigació Sanitaria Illes Balears, IdISBA, Palma de Mallorca, Spain
| | - I Ortiz
- Radiation Oncology Department, Hospital Universitari Son Espases, Carretera de Valldemossa 79, 07020, Palma de Mallorca, Spain.,Institut d'Investigació Sanitaria Illes Balears, IdISBA, Palma de Mallorca, Spain
| | | | - D Morera
- Radiation Oncology Department, Hospital Miramar-Juaneda, Palma de Mallorca, Spain
| | - A Guerrero
- Radiation Oncology Department, Hospital Universitari Son Espases, Carretera de Valldemossa 79, 07020, Palma de Mallorca, Spain.,Institut d'Investigació Sanitaria Illes Balears, IdISBA, Palma de Mallorca, Spain
| | - A M Mena
- Radiation Oncology Department, Hospital Universitari Son Espases, Carretera de Valldemossa 79, 07020, Palma de Mallorca, Spain.,Institut d'Investigació Sanitaria Illes Balears, IdISBA, Palma de Mallorca, Spain
| | - J Font
- Medical Physics Department, Hospital Universitari Son Espases, Palma de Mallorca, Spain
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Torralba E, Blanchard N, Cachet-Vivier C, Muller-Bouvet D, González J, Bastide S. Electrochemical study of carbon dioxide reduction at copper–palladium nanoparticles: Influence of the bimetallic composition in the CO poisoning tolerance. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136739] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Martínez-Holguín E, Lledó-García E, González J, Hernández-Fernández C. Three-piece inflatable penile prosthesis: Ectopic reservoir placement. Actas Urol Esp 2020; 44:367-376. [PMID: 32423611 DOI: 10.1016/j.acuro.2020.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 04/16/2020] [Indexed: 10/24/2022]
Abstract
INTRODUCTION The complications associated to the placement of the reservoir are infrequent but potentially serious. Therefore, technical alternatives have been developed for the performance of the procedure in different locations (ectopic). The aim of this review is to revise the evidence available on the different options for the ectopic placement of the reservoir. MATERIAL AND METHOD Narrative review based on a bibliographical search limited to PubMed- indexed relevant manuscripts, in Spanish or English, for the period 2000-2019, using «penile prosthesis», «ectopic reservoir», radical prostatectomy», «radical cystectomy», «pelvic radiotherapy», and «renal transplantation» as key words. Non original articles and reviews were not considered eligible. A total of 11 manuscripts were included. RESULTS Pelvic alterations after surgery and/or radiotherapy increase the difficulty in the placement of the prosthesis reservoir. In order to minimize the risk of complications, different modifications have been performed on the devices, and technical innovations have been developed for the submuscular placement of the reservoir. The available evidence regarding the functionality and complications of these techniques is limited to single institution, low volume, and retrospective series with short follow-up periods. The functionality seems to be adequate using the adapted devices. The complications are infrequent and mild in severity. CONCLUSIONS Although the available evidence is still limited, the ectopic placement of the reservoir may be considered a safe, effective, and reproducible technique. In addition, it may result particularly useful in cases of altered pelvic anatomy.
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González J, Stauber T. Marginal Fermi Liquid in Twisted Bilayer Graphene. Phys Rev Lett 2020; 124:186801. [PMID: 32441949 DOI: 10.1103/physrevlett.124.186801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 09/19/2019] [Accepted: 04/17/2020] [Indexed: 05/27/2023]
Abstract
Linear resistivity at low temperatures is a prominent feature of high-T_{c} superconductors which has also been found recently in twisted bilayer graphene. We show that due to an extended van Hove singularity (VHS), the T-linear resistivity can be obtained from a microscopic tight-binding model for filling factors close to the VHS. The linear behavior is shown to be related to the linear energy dependence of the electron quasiparticle decay rate which implies the low-energy logarithmic attenuation of the quasiparticle weight. These are distinctive features of a marginal Fermi liquid, which we also see reflected in the respective low-temperature logarithmic corrections of the heat capacity and the thermal conductivity, leading to the consequent violation of the Wiedemann-Franz law. We also show that there is a crossover at T∼6 K from the marginal Fermi liquid regime to a regime dominated by excitations on the Dirac cone right above the VHS that also yields a linear resistivity albeit with smaller slope, in agreement with experimental observations.
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Affiliation(s)
- J González
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
| | - T Stauber
- Materials Science Factory, Instituto de Ciencia de Materiales de Madrid, CSIC, E-28049 Madrid, Spain
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Aguayo-Villarreal I, Cortes-Arriagada D, Rojas-Mayorga C, Pineda-Urbina K, Muñiz-Valencia R, González J. Importance of the interaction adsorbent –adsorbate in the dyes adsorption process and DFT modeling. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127398] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Conde L, Lahoz MD, Grabulosa J, Hernández R, González J, Delgado M, Damba J. Thrust stand based on a single point load cell for impulse measurements from plasma thrusters. Rev Sci Instrum 2020; 91:023308. [PMID: 32113423 DOI: 10.1063/1.5127189] [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] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 01/12/2020] [Indexed: 06/10/2023]
Abstract
We introduce a simple thrust stand for the direct measurement of the millinewton impulses or thrusts delivered by small thrusters intended for in-space electric propulsion. The thruster under test, with a weight below 1.5 kg, is disposed on a horizontal platform and its impulse is measured as an overweight by using a strain gauge cell physically protected from the ambient plasma and vacuum conditions. This system provides ten thrust readings per second with noise peak to peak amplitudes of 0.10-0.18 mN. The calibration procedures to verify its dynamic response to time dependent thrusts in the range of 0-15 mN using control weights as well as its minimum thrust sensitivity δTs = 0.3 mN are discussed. Additionally, its simple conception permits a plain data reduction and analysis of steady state and low frequency thrust transients. This thrust stand was employed under low pressure and plasma ambient conditions to measure the steady impulses delivered by the Alternative Low Power Hybrid Ion Engine (ALPHIE) of 0.4-4.0 mN with absolute errors ΔT = ±0.3 mN. Finally, the experimental results show that a control electric voltage governs the ALPHIE thruster throttle.
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Affiliation(s)
- L Conde
- Department of Applied Physics, Escuela Técnica Superior de Ingeniería Aeronáutica y del Espacio, Universidad Politécnica de Madrid, 28040 Madrid, Spain
| | - M D Lahoz
- Department of Applied Physics, Escuela Técnica Superior de Ingeniería Aeronáutica y del Espacio, Universidad Politécnica de Madrid, 28040 Madrid, Spain
| | - J Grabulosa
- Department of Applied Physics, Escuela Técnica Superior de Ingeniería Aeronáutica y del Espacio, Universidad Politécnica de Madrid, 28040 Madrid, Spain
| | - R Hernández
- Department of Applied Physics, Escuela Técnica Superior de Ingeniería Aeronáutica y del Espacio, Universidad Politécnica de Madrid, 28040 Madrid, Spain
| | - J González
- Department of Applied Physics, Escuela Técnica Superior de Ingeniería Aeronáutica y del Espacio, Universidad Politécnica de Madrid, 28040 Madrid, Spain
| | - M Delgado
- Department of Applied Physics, Escuela Técnica Superior de Ingeniería Aeronáutica y del Espacio, Universidad Politécnica de Madrid, 28040 Madrid, Spain
| | - J Damba
- Department of Applied Physics, Escuela Técnica Superior de Ingeniería Aeronáutica y del Espacio, Universidad Politécnica de Madrid, 28040 Madrid, Spain
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García-Sánchez P, Ortega J, González J, Castillo P, Merelo J. Distributed multi-objective evolutionary optimization using island-based selective operator application. Appl Soft Comput 2019. [DOI: 10.1016/j.asoc.2019.105757] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Abstract
We show that the recently observed superconductivity in twisted bilayer graphene (TBG) can be explained as a consequence of the Kohn-Luttinger (KL) instability which leads to an effective attraction between electrons with originally repulsive interaction. Usually, the KL instability takes place at extremely low energy scales, but in TBG, a doubling and subsequent strong coupling of the van Hove singularities (vHS) in the electronic spectrum occurs as the magic angle is approached, leading to extended saddle points in the highest valence band with almost perfect nesting between states belonging to different valleys. The highly anisotropic screening induces an effective attraction in a p-wave channel with odd parity under the exchange of the two disjoined patches of the Fermi line. We also predict the appearance of a spin-density wave instability, adjacent to the superconducting phase, and the opening of a gap in the electronic spectrum from the condensation of spins with wave vector corresponding to the nesting vector close to the vHS.
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Affiliation(s)
- J González
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
| | - T Stauber
- Materials Science Factory, Instituto de Ciencia de Materiales de Madrid, CSIC, E-28049 Madrid, Spain
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Aitken-Saavedra J, Lund RG, González J, Huenchunao R, Perez-Vallespir I, Morales-Bozo I, Urzúa B, Tarquinio SC, Maturana-Ramírez A, Martos J, Fernandez-Ramires R, Molina-Berríos A. Diversity, frequency and antifungal resistance of Candida species in patients with type 2 diabetes mellitus. Acta Odontol Scand 2018; 76:580-586. [PMID: 30045641 DOI: 10.1080/00016357.2018.1484154] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OBJECTIVE To determine number, species of Candida and Candida resistance to antifungal therapy according to the metabolic control state and the associated salivary changes in patients with type 2 diabetes mellitus (DM2). MATERIALS AND METHODS Samples of non-stimulated saliva were collected from 52 patients with DM2. Salivary pH was measured and cultured on Sabouraud glucose agar and the values of CFU/ml were calculated. The species were presumptively identified using CHROMagar Candida® plates, and identification was confirmed by polymerase chain reaction (PCR). C. albicans isolates were cultured on SGA tetracycline agar with nystatin and fluconazole diffusion disks to measure susceptibility. RESULTS Sixty six percent of the yeasts isolated were Candida albicans, followed by C. glabrata (20.7%). In patients with decompensated DM2, there was an inverse association between HbA1c value and salivary pH. At higher levels of salivary acidification, a greater diversity and quantity of yeasts of the genus Candida were observed. With nystatin, higher inhibition was observed at lower pH. CONCLUSIONS The antifungal therapies could be more effective if it consider, qualitative salivary characteristics as pH, that could determine the susceptibility of species of Candida to at least to nystatin, which is the most used antifungal for treatment to oral candidiasis in patients with DM2.
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Affiliation(s)
- Juan Aitken-Saavedra
- Department of Oral Pathology and Medicine, School of Dentistry, University of Chile, Santiago, Chile
- Post Graduate Program in Dentistry, Federal University of Pelotas, Pelotas, Brazil
| | - Rafael G. Lund
- Post Graduate Program in Dentistry, Federal University of Pelotas, Pelotas, Brazil
| | - Jaime González
- Department of Oral Pathology and Medicine, School of Dentistry, University of Chile, Santiago, Chile
| | - Romina Huenchunao
- Department of Oral Pathology and Medicine, School of Dentistry, University of Chile, Santiago, Chile
| | - Ilia Perez-Vallespir
- Department of Oral Pathology and Medicine, School of Dentistry, University of Chile, Santiago, Chile
| | - Irene Morales-Bozo
- Faculty of Dentistry, Institute for Research in Dental Sciences, University of Chile, Santiago, Chile
| | - Blanca Urzúa
- Faculty of Dentistry, Institute for Research in Dental Sciences, University of Chile, Santiago, Chile
| | | | - Andrea Maturana-Ramírez
- Department of Oral Pathology and Medicine, School of Dentistry, University of Chile, Santiago, Chile
| | - Josué Martos
- Post Graduate Program in Dentistry, Federal University of Pelotas, Pelotas, Brazil
| | - Ricardo Fernandez-Ramires
- Department of Oral Pathology and Medicine, School of Dentistry, University of Chile, Santiago, Chile
| | - Alfredo Molina-Berríos
- Faculty of Dentistry, Institute for Research in Dental Sciences, University of Chile, Santiago, Chile
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Marcos C, Carro M, García S, González J. The acid detergent insoluble nitrogen (ADIN) analysis overestimates the amount of N associated to acid detergent fibre. Anim Feed Sci Technol 2018. [DOI: 10.1016/j.anifeedsci.2018.08.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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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Virto L, Haugen HJ, Fernández-Mateos P, Cano P, González J, Jiménez-Ortega V, Esquifino AI, Sanz M. Melatonin expression in periodontitis and obesity: An experimental in-vivo investigation. J Periodontal Res 2018; 53:825-831. [PMID: 29900537 DOI: 10.1111/jre.12571] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/20/2018] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND OBJECTIVE Melatonin deficiency has been associated with obesity and systemic inflammation. This study aims to evaluate whether melatonin could interfere with the mechanisms of co-morbidity linking obesity and periodontitis. MATERIAL AND METHODS Twenty-eight male Wistar rats were randomly divided in 4 groups: control group (Con) (fed with standard diet); high-fat diet group (HFD) (fed with a diet containing 35.2% fat); Con group with induced periodontitis (Con-Perio) and HFD group with induced periodontitis (HFD-Perio). To induce periodontitis, the method of oral gavages with Porphyromonas gingivalis ATCC W83K1 and Fusobacterium nucleatum DMSZ 20482 was used. Circulating melatonin levels were analyzed by multiplex immunoassays. Periodontitis was assessed by alveolar bone loss (micro-computed tomography and histology) and by surrogate inflammatory outcomes (periodontal pocket depth, modified gingival index and plaque dental index). RESULTS Plasma melatonin levels were significantly decreased (P < .05) in the obese rats with periodontitis when compared with controls or with either obese or periodontitis rats. Alveolar bone loss increased 27.71% (2.28 µm) in HFD-Perio group compared with the Con group. The histological analysis showed marked periodontal tissue destruction with osteoclast activity, particularly in the HFD-Perio group. A significant negative correlation (P < .05) was found between periodontal pocket depth, modified gingival index and circulating melatonin levels. CONCLUSION Obese and periodontitis demonstrated significantly lower melatonin concentrations when compared with controls, but in obese rats with periodontitis these concentrations were even significantly lower when compared with either periodontitis or obese rats. These results may indicate that melatonin deficiency could be a key mechanism explaining the co-morbidity effect in the association between obesity and periodontitis.
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Affiliation(s)
- L Virto
- Etiology and Therapy of Periodontal Diseases (ETEP) Research Group, University Complutense, Madrid, Spain
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - H J Haugen
- Department of Biomaterials, Institute for Clinical Dentistry, University of Oslo, Oslo, Norway
| | - P Fernández-Mateos
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
- Faculty of Medicine, Department of Cellular Biology, University Complutense, Madrid, Spain
| | - P Cano
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
- Faculty of Medicine, Department of Biochemistry and Molecular Biology III, University Complutense, Madrid, Spain
| | - J González
- Etiology and Therapy of Periodontal Diseases (ETEP) Research Group, University Complutense, Madrid, Spain
| | - V Jiménez-Ortega
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
- Faculty of Medicine, Department of Biochemistry and Molecular Biology III, University Complutense, Madrid, Spain
| | - A I Esquifino
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
- Faculty of Medicine, Department of Biochemistry and Molecular Biology III, University Complutense, Madrid, Spain
| | - M Sanz
- Etiology and Therapy of Periodontal Diseases (ETEP) Research Group, University Complutense, Madrid, Spain
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Blanco-García S, Aguado F, González J, Rodriguez F. A Raman study of the pressure-induced densification of SiO 2-based glass-ceramics. J Phys Condens Matter 2018; 30:304002. [PMID: 29877865 DOI: 10.1088/1361-648x/aacb1a] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Here we report a structural characterization study of glass-ceramics as a function of pressure by Raman spectroscopy. We selected a glass-ceramics of Li2O-Al2O3-nSiO2 (n ≈ 8) doped with ZrO2 and TiO2. This composition induces slight structural modification in Si-O and Si-O-Si bonds in the glass matrix that are crucial to stabilize metastable hexagonal SiO2 (β-quartz) solid-solution nano crystals corresponding to γ-LiAlSi2O6. This structure yields a more compact β-quartz-type phase that eventually stabilizes it in wider pressure range than pure SiO2. Raman spectroscopy allows to unravel at least two pressure-induced structural phase transitions at about 6 and 15 GPa that could not be previously revealed by x-ray diffraction. We show that the phase-transition sequence can tentatively be described in terms of SiO2-type structure as: β-quartz → Coesite I → Coesite II. The measured transition pressures are consistent with the larger cell volume attained in the γ-LiAlSi2O6 yielding a wider metastability pressure range of the β-quartz-type phase.
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Affiliation(s)
- S Blanco-García
- MALTA-Consolider team, DCITIMAC, Facultad de Ciencias, University of Cantabria, Santander, 39005, Spain
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González J, Cienfuegos J, Pardo F, Sola J, Hernández J, Rodríguez-Ortigosa C, Benito C, Balén E, Pardo F, Quiroga J. Role of leukotrienes B4 and C4 in liver allograft rejection. Transpl Int 2018. [DOI: 10.1111/tri.1992.5.s1.659] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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González-Lavado E, Iturrioz-Rodríguez N, Padín-González E, González J, García-Hevia L, Heuts J, Pesquera C, González F, Villegas JC, Valiente R, Fanarraga ML. Biodegradable multi-walled carbon nanotubes trigger anti-tumoral effects. Nanoscale 2018; 10:11013-11020. [PMID: 29868677 DOI: 10.1039/c8nr03036g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [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
Carbon nanotubes are of huge biotechnological interest because they can penetrate most biological barriers and, inside cells, can biomimetically interact with the cytoskeletal filaments, triggering anti-proliferative and cytotoxic effects in highly dividing cells. Unfortunately, their intrinsic properties and bio-persistence represent a putative hazard that relapses their application as therapies against cancer. Here we investigate mild oxidation treatments to improve the intracellular enzymatic digestion of MWCNTs, but preserving their morphology, responsible for their intrinsic cytotoxic properties. Cell imaging techniques and confocal Raman spectroscopic signature analysis revealed that cultured macrophages can degrade bundles of oxidized MWCNTs (o-MWCNTs) in a few days. The isolation of nanotubes from these phagocytes 96 hours after exposure confirmed a significant reduction of approximately 30% in the total length of these filaments compared to the control o-MWCNTs extracted from the cell culture medium, or the intracellular pristine MWCNTs. More interestingly, in vivo single intratumoral injections of o-MWCNTs triggered ca. 30% solid melanoma tumour growth-inhibitory effects while displaying significant signs of biodegradation at the tumoral/peri-tumoral tissues a week after the therapy has had the effect. These results support the potential use of o-MWCNTs as antitumoral agents and reveal interesting clues of how to enhance the efficient clearance of in vivo carbon nanotubes.
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Affiliation(s)
- E González-Lavado
- Grupo de Nanomedicina Universidad de Cantabria-IDIVAL, Herrera Oria s/n, 39011, Santander, Spain
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González J, Girotti A, Rodríguez-Cabello J, Arias F. PO-429 Elastin-like recombinamers nanoparticles: an effective drug delivery system on colorectal cancer cells. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.455] [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: 11/03/2022] Open
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Valcárcel F, González J, Aguilar A, Sánchez M, González MG, Suárez R, Tercero AM, Tercero JM, Nieto JM, González-Guirado AM, Olmeda AS. Spirocercosis in red fox (Vulpes vulpes) in a natural reserve located in a meso-Mediterranean area. Vet Parasitol Reg Stud Reports 2018; 13:115-119. [PMID: 31014857 DOI: 10.1016/j.vprsr.2018.05.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 05/14/2018] [Accepted: 05/14/2018] [Indexed: 11/25/2022]
Abstract
Spirocerca lupi Rudolphi 1809 (Nematoda Spirocercidae) has an indirect cycle involving intermediate and paratenic hosts, having domestic or wild canids as the main definitive hosts. The most frequent pathology affecting dogs is a granulomatous tumor-like growth containing adults in the oesophagus and aorta. There are very few references about the presence of nodules in the stomach. There is scant information about the epidemiology of this disease in wild red foxes in meso-Mediterranean areas. In this work we report on the natural infection of wild red foxes by Spirocerca lupi and the damage produced in the stomach wall in an area where contact with other potential definitive hosts (canids) is very rare. From July 2015 to November 2016, 61 red foxes were sampled. 18.03% of the stomach walls examined had nodules containing Spirocerca lupi adults and eggs. The prevalence of infection was similar for young and adult groups (23.81 and 18.18%; χ2 = 0.25; df = 1; P = 0.6171) and it was higher in females than in males (25.81 versus 10.00%, χ2 = 2.58; df = 1; P = 0.1082). The red fox population in the area seems to be well established judging from their age distribution and the fact that they could be captured all year round. It would appear that in the absence of other main definitive host S. lupi population is able to survive just parasitizing red foxes. Pathologic effects of this parasite on red foxes seems to show some differences related to domestic dogs. These results also indicates as predator control programs can maintain suitable host populations with reduced level of infection.
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Affiliation(s)
- F Valcárcel
- Grupo de Parasitología Animal, Animalario del Departamento de Reproducción Animal (INIA), 28040 Madrid, Spain.
| | - J González
- Villamagna SA, Finca "La Garganta", 14440 Villanueva de Córdoba, Córdoba, Spain
| | - A Aguilar
- Grupo de Parasitología Animal, Animalario del Departamento de Reproducción Animal (INIA), 28040 Madrid, Spain.
| | - M Sánchez
- Grupo de Parasitología Animal, Animalario del Departamento de Reproducción Animal (INIA), 28040 Madrid, Spain
| | - M G González
- Villamagna SA, Finca "La Garganta", 14440 Villanueva de Córdoba, Córdoba, Spain
| | - R Suárez
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - A M Tercero
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - J M Tercero
- Villamagna SA, Finca "La Garganta", 14440 Villanueva de Córdoba, Córdoba, Spain.
| | - J M Nieto
- Departamento de Anatomía, Producción y Ciencias Clínicas Veterinarias, Fac. de Veterinaria, 27002 Lugo, Spain
| | - A M González-Guirado
- Laboratorio de Anatomía Patológica, Centro de Investigación en Sanidad Animal, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), 28130 Valdeomos, Madrid, Spain.
| | - A S Olmeda
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, 28040 Madrid, Spain.
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González J, Ferrer JC, Cataldo A, Rojas L. A proactive transfer policy for critical patient flow management. Health Care Manag Sci 2018; 22:287-303. [PMID: 29455441 DOI: 10.1007/s10729-018-9437-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 02/02/2018] [Indexed: 11/30/2022]
Abstract
Hospital emergency departments are often overcrowded, resulting in long wait times and a public perception of poor attention. Delays in transferring patients needing further treatment increases emergency department congestion, has negative impacts on their health and may increase their mortality rates. A model built around a Markov decision process is proposed to improve the efficiency of patient flows between the emergency department and other hospital units. With each day divided into time periods, the formulation estimates bed demand for the next period as the basis for determining a proactive rather than reactive transfer decision policy. Due to the high dimensionality of the optimization problem involved, an approximate dynamic programming approach is used to derive an approximation of the optimal decision policy, which indicates that a certain number of beds should be kept free in the different units as a function of the next period demand estimate. Testing the model on two instances of different sizes demonstrates that the optimal number of patient transfers between units changes when the emergency patient arrival rate for transfer to other units changes at a single unit, but remains stable if the change is proportionally the same for all units. In a simulation using real data for a hospital in Chile, significant improvements are achieved by the model in key emergency department performance indicators such as patient wait times (reduction higher than 50%), patient capacity (21% increase) and queue abandonment (from 7% down to less than 1%).
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Affiliation(s)
- Jaime González
- School of Engineering, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago, Chile.
| | - Juan-Carlos Ferrer
- School of Engineering, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago, Chile
| | - Alejandro Cataldo
- School of Engineering, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago, Chile
| | - Luis Rojas
- School of Medicine, Pontificia Universidad Católica de Chile, Libertador Bernardo O'Higgins 340, Santiago, Chile
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Ibarra I, Aragón G, Gómez I, Múgica I, González J, Rodríguez Maroto J, Rojas E, Sanz D, Ramos R, Escalada R, Borjabad E, Gutiérrez-Canas C. Blend design tools for Medium Combustion Plants (MCP) firing biomass wastes. Waste Manag 2018; 71:200-214. [PMID: 29126820 DOI: 10.1016/j.wasman.2017.10.052] [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] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 10/30/2017] [Accepted: 10/31/2017] [Indexed: 06/07/2023]
Abstract
A feasible alternative for agricultural or forestry waste management is the operation of a distributed network of sustainable Medium Combustion Plants (MCPs). However, one of the main factors that hinder its development is the propensity to operational problems derived from corrosion, slagging and fouling characteristics of both bottom and fly ashes. Therefore, a cost-effective approach for these multi-product MCP could be based on predictive tools for an optimal formulation of a fuel blend. This work focuses on the assessment of the ability of these methods to provide guidance for preventing ash-related operational problems and to provide fuel-blending rules. The more widespread tools pertain to two types: compositional classification based on chemical analysis of laboratory ashes, and thermodynamic prediction of the most likely species and phases. Both criterion numbers and compositional maps are ranking methods based on the chemical analysis at a given ashing temperature. Thermodynamic equilibrium modeling is not constrained by any difference in the physical conditions of the MCP compared to those in the laboratory. Both kind of prediction tools have been validated in an MCP firing olive tree pruning residues as well as its typical blends in order to mimic a plausible pattern of fuels along a full year operating campaign. An intensive experimental campaign encompasses plant monitoring and off-line analysis of the ashes along the process line. Interpretation of compositional plots has revealed to be potentially sensitive to ashing temperature. Here are presented examples showing how this variable could lead to either insignificant differences or to a substantial disparity in the a priori fuel diagnosis. Some inconsistencies have been observed between the predictions based on criterion numbers, even for the same fuel and for ranking rules specifically formulated for biomasses. Moreover, it does not match consistently with the information obtained from phase diagrams. Therefore, their use should be limited to the case of a well-established selection of a fuel index for a well-defined fuel provided empirical evidence of an enough good description of the ash behavior, which is not the most frequent case. Thermodynamic equilibrium calculations allow a more precise prediction of the main species in the condensed phase, without the constraint of the ashing temperature. Elemental closure of main ash-forming elements with the chemical analysis of the process ashes presents small differences, and their proximity localization on the phase diagrams denote similar prediction between predicted and process ashes.
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Affiliation(s)
- I Ibarra
- Dpt. Chem. & Environ. Eng., University of the Basque Country UPV/EHU, Alda. de Urquijo s/n, 48013 Bilbao, Spain.
| | - G Aragón
- Dpt. Chem. & Environ. Eng., University of the Basque Country UPV/EHU, Alda. de Urquijo s/n, 48013 Bilbao, Spain
| | - I Gómez
- Dpt. Chem. & Environ. Eng., University of the Basque Country UPV/EHU, Alda. de Urquijo s/n, 48013 Bilbao, Spain
| | - I Múgica
- Dpt. Chem. & Environ. Eng., University of the Basque Country UPV/EHU, Alda. de Urquijo s/n, 48013 Bilbao, Spain
| | - J González
- Dpt. Chem. & Environ. Eng., University of the Basque Country UPV/EHU, Alda. de Urquijo s/n, 48013 Bilbao, Spain
| | | | - E Rojas
- CIEMAT Avda. Complutense 40, 28040 Madrid, Spain
| | - D Sanz
- CIEMAT Avda. Complutense 40, 28040 Madrid, Spain
| | - R Ramos
- CEDER-CIEMAT, Autovía de Navarra A15, Salida 56, 42290 Lubia, Soria, Spain
| | - R Escalada
- CEDER-CIEMAT, Autovía de Navarra A15, Salida 56, 42290 Lubia, Soria, Spain
| | - E Borjabad
- CEDER-CIEMAT, Autovía de Navarra A15, Salida 56, 42290 Lubia, Soria, Spain
| | - C Gutiérrez-Canas
- Dpt. Chem. & Environ. Eng., University of the Basque Country UPV/EHU, Alda. de Urquijo s/n, 48013 Bilbao, Spain
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Fernández-Campos F, Obach M, Moreno M, García A, González J. Pharmaceutical development of a generic corticoid semisolid formulation. J Drug Deliv Sci Technol 2017. [DOI: 10.1016/j.jddst.2017.03.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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de la Fuente N, Wang J, Chen L, González J, Salmones J, Contreras J, Navarrete J. Skeletal isomerization of n-heptane with highly selective Pt/H3PW12O40/SBA–15 trifunctional catalysts. CATAL COMMUN 2017. [DOI: 10.1016/j.catcom.2017.08.030] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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