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Hernández Velázquez JD, Alas SJ, Pérez E, Goicochea AG. Universal scaling of the osmotic pressure for dense, quasi-two-dimensionally confined polymer melts reveals transitions between fractal dimensions. J Chem Phys 2024; 160:084907. [PMID: 38415832 DOI: 10.1063/5.0185634] [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] [Received: 11/01/2023] [Accepted: 02/05/2024] [Indexed: 02/29/2024] Open
Abstract
A scaling law for the osmotic pressure of quasi-two-dimensional polymer melts as a function of concentration is obtained, which shows fractal characteristics. Structural properties such as the chains' contour length and their inner-monomer pair distribution function display fractal scaling properties as well. These predictions are confirmed with mesoscale numerical simulations. The chains are swollen and highly entangled, yet Flory's exponent is always ν = 1/2. The melt can be considered a fluid of "blobs" whose size becomes renormalized in terms of the contour's length while the fractal dimension df increases monotonically between 5/4 and 2, as the monomer concentration is increased. The semidilute scaling of the pressure is recovered when df = 1. Our results agree with recent experiments and with numerical reports on quasi-2d melts. This work provides a new paradigm to study and interpret thermodynamic and structural data in low-dimensional polymer melts, namely as fractal macromolecular objects.
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Affiliation(s)
- J D Hernández Velázquez
- Tecnológico Nacional de México, Tecnológico de Estudios Superiores de Ecatepec, División de Ingeniería Química y Bioquímica, 55210 Estado de México, Mexico
| | - S J Alas
- Departamento de Ciencias Naturales, Universidad Autónoma Metropolitana Unidad Cuajimalpa, 05300 Ciudad de México, Mexico
| | - E Pérez
- Instituto de Física, Universidad Autónoma de San Luis Potosí, 78000 San Luis Potosí, Mexico
| | - A Gama Goicochea
- Tecnológico Nacional de México, Tecnológico de Estudios Superiores de Ecatepec, División de Ingeniería Química y Bioquímica, 55210 Estado de México, Mexico
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Pérez E, Venegas-Vargas C, Heinz A, Smutzer M, Taylor LP, Diamondidis Y, Mangarova N, Hansen T, Angulo J, Bandrick M, Balasch M. Safety of the Administration of an Inactivated PCV2a/PCV2b/ Mycoplasma Hyopneumoniae Vaccine to Pregnant and Lactating Sows and Gilts. Vaccines (Basel) 2023; 11:1483. [PMID: 37766159 PMCID: PMC10537677 DOI: 10.3390/vaccines11091483] [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: 06/29/2023] [Revised: 09/08/2023] [Accepted: 09/10/2023] [Indexed: 09/29/2023] Open
Abstract
Porcine Circovirus type 2 (PCV2) vaccination of gilts during acclimation has become a routine practice in commercial pig farms to homogenize herd immunity to PCV2 and reduce the impact of diseases associated with PCV2 infection, namely reproductive, respiratory, systemic, and other PCV2-associated diseases. The periodic mass vaccination of sows, with the same objectives, is also common. To ensure mass vaccination is an appropriate health management tool, demonstrating that the vaccine is safe in different sow/gilt physiological stages is necessary. The objective of the present studies was to evaluate safety of a PCV2a/PCV2b/Mycoplasma hyopneumoniae (PCV2a2bMHP) killed vaccine in sows and gilts during gestation and lactation, under controlled experimental pen conditions, and during gestation, mimicking mass vaccination, under field conditions. Safety was assessed by monitoring for immediate adverse reactions after vaccination, rectal temperatures after vaccination (controlled experimental pen studies only), local and systemic reactions, and reproductive performance (studies conducted during pregnancy) or lactation performance (studies conducted during lactation). In total, 416 sows/gilts were enrolled, and more than 4000 piglets were observed during their first week of life, under field conditions. In both controlled experimental and field studies, no immediate anaphylactic type reactions were observed after vaccination and the incidence of adverse events, such as depression or decreased appetite, was acceptable for what is expected in a swine herd. In the studies conducted during gestation, vaccination did not significantly increase rectal temperature of the vaccinated animals. Sow reproductive outcomes were not affected by vaccination. The farrowing rate of animals participating in the field study was higher than the historic averages of the farms. In the laboratory studies conducted during the first and second half of gestation, no differences in reproductive outcome were observed between vaccinated and non-vaccinated animals. However, sows vaccinated during lactation experienced a transient hyperthermia which did not affect milk production since the piglets' average daily weight gain was not affected. The previously described results confirm that the administration of a PCV2a2bMHP vaccine was safe in the tested conditions. All the anticipated benefits of sow and gilt PCV2 vaccination, such as homogenization of PCV2 antibody titers or reduction in PCV2 circulation in the herd, would not be masked by potential adverse events due to herd vaccination. In conclusion, the administration of a PCV2a2bMHP vaccine to sows and gilts during different stages of gestation and during lactation is safe.
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Affiliation(s)
- Elena Pérez
- Zoetis Manufacturing & Research Spain S.L., Ctra Camprodon s/n, 17813 Vall de Bianya, Spain;
| | - Cristina Venegas-Vargas
- Zoetis Inc., 333 Portage St, Kalamazoo, MI 49007, USA; (C.V.-V.); (A.H.); (M.S.); (L.P.T.); (Y.D.); (M.B.)
| | - Andrea Heinz
- Zoetis Inc., 333 Portage St, Kalamazoo, MI 49007, USA; (C.V.-V.); (A.H.); (M.S.); (L.P.T.); (Y.D.); (M.B.)
| | - Megan Smutzer
- Zoetis Inc., 333 Portage St, Kalamazoo, MI 49007, USA; (C.V.-V.); (A.H.); (M.S.); (L.P.T.); (Y.D.); (M.B.)
| | - Lucas P. Taylor
- Zoetis Inc., 333 Portage St, Kalamazoo, MI 49007, USA; (C.V.-V.); (A.H.); (M.S.); (L.P.T.); (Y.D.); (M.B.)
| | - Yvette Diamondidis
- Zoetis Inc., 333 Portage St, Kalamazoo, MI 49007, USA; (C.V.-V.); (A.H.); (M.S.); (L.P.T.); (Y.D.); (M.B.)
| | - Nevena Mangarova
- Zoetis Belgium S.A., 20 Mercuriusstraat, 1930 Zaventem, Belgium;
| | - Tara Hansen
- Zoetis Inc., 601 West Cornhusker Hwy, Lincoln, NE 68521, USA;
| | | | - Meggan Bandrick
- Zoetis Inc., 333 Portage St, Kalamazoo, MI 49007, USA; (C.V.-V.); (A.H.); (M.S.); (L.P.T.); (Y.D.); (M.B.)
| | - Monica Balasch
- Zoetis Manufacturing & Research Spain S.L., Ctra Camprodon s/n, 17813 Vall de Bianya, Spain;
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Hernández Velázquez JD, Sánchez-Balderas G, Gama Goicochea A, Pérez E. The effective interfacial tensions between pure liquids and rough solids: a coarse-grained simulation study. Phys Chem Chem Phys 2023; 25:10325-10334. [PMID: 36987944 DOI: 10.1039/d2cp04321a] [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: 03/30/2023]
Abstract
The effective solid-liquid interfacial tension (SL-IFT) between pure liquids and rough solid surfaces is studied through coarse-grained simulations. Using the dissipative particle dynamics method, we design solid-liquid interfaces, confining a pure liquid between two explicit solid surfaces with different roughness degrees. The roughness of the solid phase is characterized by Wenzel's roughness factor and the effective SL-IFT is reported as a function of it also. Two solid-liquid systems, different from each other by their solid-liquid repulsion strength, are studied to measure the effects caused by the surface roughness on the calculation of . It is found that the roughness changes the structure of the liquid, which is observed in the first layer of liquid near the solid. These changes are responsible for the effective SL-IFT increase, as surface roughness increases. Although there is a predominance of surface roughness in the calculation of it is found that the effective SL-IFT is directly proportional to the magnitude of the solid-liquid repulsion strength. The insights provided by these simulations suggest that the increase of Wenzel's roughness factor increases the number of effective solid-liquid interactions between particles, yielding significant changes in the local values of the normal and tangential components of the pressure tensor.
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Affiliation(s)
- J D Hernández Velázquez
- División de Ingeniería Química y Bioquímica, Tecnológico de Estudios Superiores de Ecatepec, 55210, Ecatepec de Morelos, Estado de México, Mexico.
| | - G Sánchez-Balderas
- Instituto de Física, Universidad Autónoma de San Luis Potosí, 78000, San Luis Potosí, SLP, Mexico.
| | - A Gama Goicochea
- División de Ingeniería Química y Bioquímica, Tecnológico de Estudios Superiores de Ecatepec, 55210, Ecatepec de Morelos, Estado de México, Mexico.
| | - E Pérez
- Instituto de Física, Universidad Autónoma de San Luis Potosí, 78000, San Luis Potosí, SLP, Mexico.
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Reche C, Pérez N, Alastuey A, Cots N, Pérez E, Querol X. 2011-2020 trends of urban and regional ammonia in and around Barcelona, NE Spain. Chemosphere 2022; 304:135347. [PMID: 35714951 DOI: 10.1016/j.chemosphere.2022.135347] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 06/08/2022] [Accepted: 06/12/2022] [Indexed: 06/15/2023]
Abstract
It is well established that in environments where NH3 abundance is limiting in secondary PM2.5 generation, a reduction of NH3 emissions can result in an important contribution to air quality control. However, as deduced from open data published by the European Environmental Agency, the availability of measurements of NH3 concentrations is very scarce, with very few countries in Europe reporting data consistently for extensive periods, this being especially true for urban background sites. In this framework, simultaneous multi-site measurements were carried out in NE (Northeast) Spain from 2011 to 2020, using diffusion tubes. The highest NH3 concentrations were recorded at the traffic site (5.3 μgm-3 on average), followed by those measured at the urban background site (2.1 μgm-3). Mean concentrations at the mountain site were 1.6 μgm-3, while the lowest concentrations were recorded at the regional site (0.9 μgm-3). This comparison highlights traffic emissions as an important source of NH3. A statistically significant time trend of this pollutant was observed at the urban background site, increasing by 9.4% per year. A season-separated analysis also revealed a significant increasing trend at the mountain site during summer periods, probably related with increasing emissions from agricultural/livestock activities. These increases in NH3 concentrations were hypothesized to be responsible for the lack of a decreasing trend of NO3- concentrations at the monitoring sites, in spite of a markedly reduction of NO2 during the period, especially at the urban background. Thus, this would in turn affect the effectiveness of current action plans to abate fine aerosols, largely made up of secondary compounds. Actions to reduce NH3 concentrations at urban backgrounds are challenging though, as predicting NH3 is subjected to a high uncertainty and complexity due to its dependence on a variety of factors. This complexity was clearly indicated by the application of a decision tree algorithm to find the parameters better predicting NH3 at the urban background under study. O3, NO, NO2, CO, SO2 and OM + EC concentrations, together with meteorological indicators, were used as independent variables, obtaining no combination of parameters evidently able to predict significant differences in NH3 concentrations, with a coefficient of determination between real and predicted measurements lower than 0.50. This emphasizes the need for highly temporally and spatially resolved NH3 measurements for an accurate design of abatement actions.
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Affiliation(s)
- C Reche
- IDAEA-CSIC, Barcelona, Spain.
| | - N Pérez
- IDAEA-CSIC, Barcelona, Spain
| | | | - N Cots
- Departament de Territori i Sostenibilitat, Generalitat de Catalunya, Barcelona, Spain
| | - E Pérez
- Departament de Territori i Sostenibilitat, Generalitat de Catalunya, Barcelona, Spain
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Peña-López Y, Campins-Martí M, Slöcker-Barrio M, Bustinza A, Alejandre C, Jordán-García I, Ortiz-Álvarez A, López-Castilla JD, Pérez E, Schüffelmann C, García-Besteiro M, Sánchez-Pérez S, Arjona D, Coca-Pérez A, De Carlos JC, Flores-González JC, Mendizabal M, Sánchez-Granados JM, Martínez-Padilla MC, Pérez R, Abril-Molina A, Tejada S, Roca D, Serrano-Megías M, Rello J. Ventilator-associated events in children: A multicentre prospective cohort study. Anaesth Crit Care Pain Med 2022; 41:101072. [PMID: 35477009 DOI: 10.1016/j.accpm.2022.101072] [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: 09/28/2021] [Revised: 12/29/2021] [Accepted: 12/30/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND The Centres for Disease Control and Prevention (CDC) broadened the focus of surveillance from ventilator-associated pneumonia to ventilator-associated event (VAE) for quality purposes. No paediatric definition of VAE (PaedVAE) has been accurately validated. We aimed to analyse the incidence and impact on patient outcomes resulting from the application of the adult and two paediatric VAE (PaedVAE) criteria. SECONDARY OBJECTIVE to evaluate VAE/PaedVAE as factors associated with increased duration of mechanical ventilation (MV) and Paediatric Intensive Care Unit (PICU) stay. METHODS Multicentre observational prospective cohort study in 15 PICUs in Spain. VAEs were assessed using the 2013/2015 CDC classification. PaedVAE were assessed using the CDC definition based on mean airway pressure (MAP-PaedVAE) versus a paediatric definition based on positive end-expiratory pressure (PEEP-PaedVAE). Children who underwent MV ≥ 48 h were included. RESULTS A total of 3626 ventilator-days in 391 patients were analysed. The incidence of VAE, MAP-PaedVAE and PEEP-PaedVAE was 8.55, 5.24 and 20.96 per 1000 ventilator-days, respectively. The median time [IQR] for VAE, MAP-PaedVAE and PEEP-PaedVAE development from the MV onset was 4 [3-12.5], 4 [3-14], and 5 [3-7.75] days, respectively. Among survivors, all three were associated with increased MV duration (> 7 days) and PICU stay (> 10 days) at univariate analysis. Multivariate analysis showed that PEEP-PaedVAE was the only definition independently associated with MV above 7 days [OR = 4.86, 95% CI (2.41-10.11)] and PICU stay [OR = 3.49, 95% CI (1.68-7.80)] above ten days, respectively. CONCLUSIONS A VAE definition based on slight PEEP increases should be preferred for VAE surveillance in children.
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Affiliation(s)
- Yolanda Peña-López
- Paediatric Critical Care Department, Hospital Universitari Vall d'Hebron, Barcelona, Spain; Clinical Research/Epidemiology in Pneumonia & Sepsis (CRIPS), Vall d'Hebron Research Institute, Barcelona, Spain.
| | - Magda Campins-Martí
- Department of Preventive Medicine and Epidemiology, Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, Spain
| | | | - Amaya Bustinza
- Paediatric Intensive Care Unit, Hospital Gregorio Marañón, Madrid, Spain
| | - Carme Alejandre
- Paediatric Intensive Care Unit, Hospital Sant Joan de Déu, Barcelona, Spain
| | - Iolanda Jordán-García
- Paediatric Intensive Care Unit, Hospital Sant Joan de Déu, Barcelona, Spain; Institut de Recerca Sant Joan de Déu, Consorcio de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
| | - Ana Ortiz-Álvarez
- Paediatric Intensive Care Unit, Hospital Materno-Infantil Virgen del Rocío, Sevilla, Spain
| | | | - Elena Pérez
- Paediatric Intensive Care Unit, Hospital La Paz, Madrid, Spain
| | | | | | - Silvia Sánchez-Pérez
- Paediatric Intensive Care Unit, Corporació Sanitària Parc Taulí, Sabadell, Spain
| | - David Arjona
- Paediatric Intensive Care Unit, Hospital Virgen de la Salud, Toledo, Spain
| | - Ana Coca-Pérez
- Paediatric Intensive Care Unit, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - Juan Carlos De Carlos
- Paediatric Intensive Care Unit, Hospital Universitario Son Espases, Palma de Mallorca, Spain
| | | | - Mikel Mendizabal
- Paediatric Intensive Care Unit, Complejo Hospitalario de Navarra, Pamplona, Spain
| | | | | | - Rosalía Pérez
- Paediatric Intensive Care Unit, Hospital Universitario de Canarias, Santa Cruz de Tenerife, Spain
| | - Ana Abril-Molina
- Paediatric Intensive Care Unit, Hospital Materno-Infantil Virgen de las Nieves, Granada, Spain
| | - Sofia Tejada
- Clinical Research/Epidemiology in Pneumonia & Sepsis (CRIPS), Vall d'Hebron Research Institute, Barcelona, Spain; Centro de Investigación Biomédica En Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
| | - David Roca
- Paediatric Critical Care Department, Hospital Universitari Vall d'Hebron, Barcelona, Spain
| | - Marta Serrano-Megías
- European Society of Clinical Microbiology and Infectious Diseases - Study Group for Infections in Critically Ill Patients (ESGCIP-ESCMID)
| | - Jordi Rello
- Clinical Research/Epidemiology in Pneumonia & Sepsis (CRIPS), Vall d'Hebron Research Institute, Barcelona, Spain; Centro de Investigación Biomédica En Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain; Clinical Research in the ICU, Anaesthesia Department, CHRU Nimes, Université de Nîmes-Montpellier, Nîmes, France
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Santos Carrasco I, Gonçalves Cerejeira J, Fernández Lozano M, Gonzaga Ramírez A, Queipo De Llano De La Viuda M, Guerra Valera G, Vallecillo Adame C, De Andrés Lobo C, Jiménez Aparicio T, Rodríguez Rodríguez B, Navarro Barriga N, Mateos Sexmero M, Pérez E, Gallardo Borge L. Mutism. What to expect? Eur Psychiatry 2022. [PMCID: PMC9566487 DOI: 10.1192/j.eurpsy.2022.1507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction Mutism is the inability or unwillingness to speak, resulting in an absence or marked paucity of verbal output. Mutism is a common manifestation of psychiatric, neurological, and drug-related illnesses. Psychiatric disorders associated with mutism include schizophrenia, affective disorders, conversion reactions, dissociative states, and dementias. Neurological disorders causing mutism affect the basal ganglia, frontal lobes, or the limbic system. Objectives Outline the importance of setting a differential diagnosis of mutism in the Emergency Room. Methods Review of scientific literature based on a relevant clinical case. Results
Male, 58 years old. He has lived in a residence for 3 months due to voluntary refusal to ingest. Diagnosed with paranoid personality disorder. He is refered to the Emergency Service due to sudden mutism. During this day, he has been stable and suitable with a good functionality. For 3 hours he is mutist, oppositional attitude and stiff limbs, refusing to obey simple orders. Hyperalert and hyperproxia. Not staring. After ruling out organic pathology: normal blood tests, negative urine toxins and cranial CT without alterations, he was admitted to Psychiatry for observation and, finally, he was diagnosed with Psychotic Disorder NOS. Conclusions Mutism most often occurs in association with other disturbances in behavior, thought processes, affect, or level of consciousness. The most common disorder of behavior occurring with mutism is catatonia. The differential diagnosis of mutism is complex. In some cases the diagnosis will be clarified only by careful observation and after a neurological evaluation. Published studies show neurological disorders presenting with mutism can be misdiagnosed as psychiatric. Disclosure No significant relationships.
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de Miguel R, Sánchez-Andreu L, Rodríguez-Largo A, Pérez E, Reséndiz R, Luján L. Corrugated Intimal Surface: An Incidental Finding in the Ovine Aorta. J Comp Pathol 2022. [DOI: 10.1016/j.jcpa.2021.11.103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Rodríguez-Largo A, Sánchez E, Lacalle A, de Miguel R, Echeverría I, Pérez E, Moleres J, Pérez M, Reina R, Luján L. Unraveling the Role of Aluminum-induced Granulomas in Small Ruminant Lentiviruses Biodistribution. J Comp Pathol 2022. [DOI: 10.1016/j.jcpa.2021.11.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Canozzi MEA, Clariget J, Roig G, Pérez E, Aznárez V, Banchero G, La Manna A. Shade effect on behaviour, physiology, performance, and carcass weight of heat-stressed feedlot steers in humid subtropical area†. Anim Prod Sci 2022. [DOI: 10.1071/an22128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Madrid A, Pérez E, Vicente MÁ, Rives V, Trujillano R. Fast and Clean Synthesis of Nylon-6/Synthetic Saponite Nanocomposites. Materials (Basel) 2021; 15:163. [PMID: 35009309 PMCID: PMC8745959 DOI: 10.3390/ma15010163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/19/2021] [Accepted: 12/22/2021] [Indexed: 06/14/2023]
Abstract
Nylon/saponite nanocomposites were synthesized and characterized. The nanocomposites were prepared by means of a fast, efficient, low cost, and environmentally friendly method. All of the tested preparations resulted in the pre-designed nanocomposites. To this end, delaminated saponites were directly synthesized to be used as a filler in a polymer matrix formed by nylon-6 by the in situ intercalation polymerisation of an ε-caprolactam monomer without the use of surfactants or other organic reagents to organophilise the clay, thus avoiding the drawbacks of contamination. The efficiency of the preparation method increased, and significant savings were achieved in terms of both energy reaction time, savings of 60% and 70%, respectively, by using microwave radiation as an energy source during the synthesis of the nanocomposites. In addition, given that the method that was followed avoids the use of contaminating organophilic agents, it is important to highlight the savings in reagents and the fact that there was zero environmental contamination.
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Cambra C, Losilla JM, Mena N, Pérez E. Differences in picture naming between children with cochlear implants and children with typical hearing. Heliyon 2021; 7:e08507. [PMID: 34917803 PMCID: PMC8646167 DOI: 10.1016/j.heliyon.2021.e08507] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 10/07/2021] [Accepted: 11/26/2021] [Indexed: 11/24/2022] Open
Abstract
Increase in the auditory abilities of children with cochlear implants (CIs) has led to an improvement in naming tasks, although divergent results are still being reported; this strongly suggests that further studies are needed. The study aims to compare the responses in a picture-naming activity between the complete population of children aged 5 to 7 with cochlear implants in Catalonia -Spain- (N = 31), without developmental problems, and a matched sample of 31 children with typical hearing. A picture-naming task was used to assess their lexical naming abilities. The results show that children with CIs provide more non-responses, they produce fewer words correctly, they require a longer reaction time and they commit more picture-naming errors than children with typical hearing. The auditory age does significantly affect the results, but not the type of implant. In spite of the hearing gain achieved with the cochlear implant and the listening experience progressively achieved in distinct contexts, further explicit work on lexical naming in speech-therapy intervention is clearly required.
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Affiliation(s)
- C Cambra
- Department of Basic, Developmental and Educational Psychology, Faculty of Psychology. Universitat Autònoma de Barcelona, 08193 Bellaterra, Cerdanyola del Vallès, Spain
| | - J M Losilla
- Department of Psychobiology and Health Sciences Methodology, Faculty of Psychology, Universitat Autònoma de Barcelona, 08193 Bellaterra, Cerdanyola del Vallès, Spain
| | - N Mena
- Department of Basic, Developmental and Educational Psychology, Faculty of Psychology. Universitat Autònoma de Barcelona, 08193 Bellaterra, Cerdanyola del Vallès, Spain
| | - E Pérez
- Department of Basic, Developmental and Educational Psychology, Faculty of Psychology. Universitat Autònoma de Barcelona, 08193 Bellaterra, Cerdanyola del Vallès, Spain
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Torres Y, Rodríguez Y, Pérez E. [How to improve the quality of healthcare services and patient safety by adopting strategies from the aviation sector?]. J Healthc Qual Res 2021; 37:182-190. [PMID: 34887228 DOI: 10.1016/j.jhqr.2021.10.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 06/26/2021] [Accepted: 10/05/2021] [Indexed: 11/25/2022]
Abstract
BACKGROUND AND OBJECTIVE The World Health Organization recognizes patient safety as a priority as part of its global strategy to improve the quality of health services. However, several initiatives need to be integrated and systematized to increase the reliability of healthcare systems. This article discusses several management strategies developed in the aviation sector that have led to a drastic decrease in the accident rate. The aim is to describe each strategy and contrast them with their application in the healthcare sector. METHODS Different results and recommendations from the literature and institutions such as the World Health Organization and the International Civil Aviation Organization were consulted and compiled. A synthesis of the identified strategies was made, highlighting examples of their application and impact. RESULTS Five key strategies were identified: 1) no-blame incident reporting systems, 2) systematic use of checklists, 3) recurrent training and use of simulation, 4) management of fatigue and work schedules, and 5) management of teamwork. CONCLUSIONS The strategies from the aviation sector are presented as a valuable reference for improving patient safety and the quality of healthcare services. They should be consolidated and harmoniously integrated into the design and management of health systems.
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Affiliation(s)
- Y Torres
- Department of Mechanical Engineering, École de Technologie Supérieure, Montreal, Canadá.
| | - Y Rodríguez
- Facultad Nacional de Salud Pública, Universidad de Antioquia, Medellín, Colombia
| | - E Pérez
- Facultad de Ingeniería Industrial, Universidad Pontificia Bolivariana, Medellín, Colombia
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Montes-Zavala I, Zapata-Tello DL, Pérez E, González-Calderón JA. Rheological improvement of TiO 2 nanoparticles modified by dicarboxylic acids. J DISPER SCI TECHNOL 2021. [DOI: 10.1080/01932691.2021.1930035] [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: 10/21/2022]
Affiliation(s)
- I. Montes-Zavala
- Departamento de Ingeniería Química, Tecnológico Nacional de México en Celaya, Celaya, Guanajuato, México
| | - D. L. Zapata-Tello
- Facultad de Ciencias, Universidad Autónoma de San Luis Potosí, Zona Universitaria, San Luis Potosí, San Luis Potosí, México
| | - E. Pérez
- Instituto de Física, Universidad Autónoma de San Luis Potosí, San Luis Potosí, San Luis Potosí, México
| | - J. A. González-Calderón
- Cátedras CONACYT-Instituto de Física, Universidad Autónoma de San Luis Potosí, San Luis Potosí, San Luis Potosí, México
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Martínez-Jothar L, Montes-Zavala I, Rivera-García N, Díaz-Ceja Y, Pérez E, Waldo-Mendoza M. Thermal degradation of polypropylene reprocessed in a co-rotating twin-screw extruder: kinetic model and relationship between Melt Flow Index and Molecular weight. RMIQ 2021. [DOI: 10.24275/rmiq/poly2165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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15
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Acosta J, Pérez E, Sánchez-Murcia PA, Fillat C, Fernández-Lucas J. Molecular Basis of NDT-Mediated Activation of Nucleoside-Based Prodrugs and Application in Suicide Gene Therapy. Biomolecules 2021; 11:biom11010120. [PMID: 33477716 PMCID: PMC7831932 DOI: 10.3390/biom11010120] [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] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/11/2021] [Accepted: 01/13/2021] [Indexed: 11/16/2022] Open
Abstract
Herein we report the first proof for the application of type II 2′-deoxyribosyltransferase from Lactobacillus delbrueckii (LdNDT) in suicide gene therapy for cancer treatment. To this end, we first confirm the hydrolytic ability of LdNDT over the nucleoside-based prodrugs 2′-deoxy-5-fluorouridine (dFUrd), 2′-deoxy-2-fluoroadenosine (dFAdo), and 2′-deoxy-6-methylpurine riboside (d6MetPRib). Such activity was significantly increased (up to 30-fold) in the presence of an acceptor nucleobase. To shed light on the strong nucleobase dependence for enzymatic activity, different molecular dynamics simulations were carried out. Finally, as a proof of concept, we tested the LdNDT/dFAdo system in human cervical cancer (HeLa) cells. Interestingly, LdNDT/dFAdo showed a pronounced reduction in cellular viability with inhibitory concentrations in the low micromolar range. These results open up future opportunities for the clinical implementation of nucleoside 2′-deoxyribosyltransferases (NDTs) in cancer treatment.
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Affiliation(s)
- Javier Acosta
- Applied Biotechnology Group, European University of Madrid, c/ Tajo s/n, Villaviciosa de Odón, 28670 Madrid, Spain; (J.A.); (E.P.)
| | - Elena Pérez
- Applied Biotechnology Group, European University of Madrid, c/ Tajo s/n, Villaviciosa de Odón, 28670 Madrid, Spain; (J.A.); (E.P.)
| | - Pedro A. Sánchez-Murcia
- Division of Physiological Chemistry, Otto-Loewi Research Center, Medical University of Graz, Neue Stiftingtalstraße 6/III, A-8010 Graz, Austria;
| | - Cristina Fillat
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain;
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), 08036 Barcelona, Spain
| | - Jesús Fernández-Lucas
- Division of Physiological Chemistry, Otto-Loewi Research Center, Medical University of Graz, Neue Stiftingtalstraße 6/III, A-8010 Graz, Austria;
- Grupo de Investigación en Ciencias Naturales y Exactas, GICNEX, Universidad de la Costa, CUC, Calle 58 # 55-66 Barranquilla, Colombia
- Correspondence:
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16
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Garcia de la Serrana D, Pérez M, Nande M, Hernández-Urcera J, Pérez E, Coll-Lladó C, Hollenbeck C. Regulation of growth-related genes by nutrition in paralarvae of the common octopus (Octopus vulgaris). Gene 2020; 747:144670. [PMID: 32298760 DOI: 10.1016/j.gene.2020.144670] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 03/26/2020] [Accepted: 04/12/2020] [Indexed: 02/07/2023]
Abstract
The common octopus (Octopus vulgaris) is a species of great interest to the aquaculture industry. However, the high mortalities registered during different phases of the octopus lifecycle, particularly the paralarvae stage, present a challenge for commercial aquaculture. Improvement of diet formulation is seen as one way to reduce mortality and improve growth. Molecular growth-markers could help to improve rearing protocols and increase survival and growth performance; therefore, over a hundred orthologous genes related to protein balance and muscle growth in vertebrates were identified for the common octopus and their suitability as molecular markers for growth in octopus paralarvae explored. We successfully amplified 14 of those genes and studied their transcription in paralarvae either fed with artemia, artemia + zoea diets or submitted to a short fasting-refeeding procedure. Paralarvae fed with artemia + zoea had higher growth rates compared to those fed only with artemia, as well as a significant increase in octopus mtor (mtor-L) and hsp90 (hsp90-L) transcription, with both genes also up-regulated during refeeding. Our results suggest that at least mtor-L and hsp90-L are likely linked to somatic growth in octopus paralarvae. Conversely, ckip1-L, crk-L, src-L and srf-L had expression patterns that did not match to periods of growth as would be expected based on similar studies in vertebrates, indicating that further research is needed to understand their function during growth and in a muscle specific context.
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Affiliation(s)
- D Garcia de la Serrana
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Barcelona, Spain; Scottish Oceans Institute, School of Biology, University of St Andrews, St Andrews, UK.
| | - M Pérez
- AQUACOV. Centro Oceanográfico de Vigo, Instituto Español de Oceanografía, Vigo, Spain
| | - M Nande
- AQUACOV. Centro Oceanográfico de Vigo, Instituto Español de Oceanografía, Vigo, Spain; CIMAR/CIIMAR - Interdisciplinary Centre for Marine and Environmental Research, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal
| | - J Hernández-Urcera
- AQUACOV. Centro Oceanográfico de Vigo, Instituto Español de Oceanografía, Vigo, Spain; Department of Ecology and Marine Resources, Instituto de Investigaciones Marinas (CSIC), Vigo, Spain
| | - E Pérez
- AQUACOV. Centro Oceanográfico de Vigo, Instituto Español de Oceanografía, Vigo, Spain
| | - C Coll-Lladó
- Scottish Oceans Institute, School of Biology, University of St Andrews, St Andrews, UK
| | - C Hollenbeck
- Scottish Oceans Institute, School of Biology, University of St Andrews, St Andrews, UK
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17
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Malagon A, Córcoles D, Pérez E, Mollà L, Bergé D, González A, Bellsolà M, Martín L, Bulbena A, Pérez V. Social withdrawal and suicide risk: A descriptive study. Eur Psychiatry 2020. [DOI: 10.1016/j.eurpsy.2016.01.372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
IntroductionSocial withdrawal is a major health problem that has been related with higher morbidity and mortality rates. There are few studies about the relationship between suicidal behavior and social isolation.AimTo describe the existence of suicidal risk in subjects with social isolation.MethodParticipants were 187 subjects referred to a Crisis Resolution Home Treatment because of social isolation. The inclusion criteria were: home isolation, avoiding of social situations and relationships, for at least 6 months. Suicide risk was assessed by the item of the Severity of Psychiatric Illness, dividing in four groups (from absence to high suicide risk). Socio-demographic and clinical data were also analysed.ResultsMost cases (n = 132, 70.5%) had absence of suicide risk. They were predominantly young males in all groups. There were no statistically significant differences in sociodemographic or clinical variables. The mean age at onset of social isolation was lower in the high suicide risk group, having lower socially withdrawn period. This group had also lower rates of child abuse and suicide attempt history. The more frequent diagnosis in all groups was psychotic, affective and anxiety disorders. Those cases with mild and high suicide risk needed more frequently hospitalization.ConclusionsSocial isolated people attended by CRHT do not have high frequency of suicide risk. Cases with higher suicide risk are younger and have a shorter period of isolation. The absence of child abuse history or previous suicide attempts contrasts with previous suicidal behavior research. These data can be influenced by the characteristics of functioning of CRHT and the small sample size.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Debbah I, Krache R, Aranburu N, Etxeberria A, Pérez E, Benavente R. Influence of ABS Type and Compatibilizer on the Thermal and Mechanical Properties of PC/ABS Blends. INT POLYM PROC 2020. [DOI: 10.3139/217.3858] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- I. Debbah
- Laboratoire des Materiaux Polymeriques Multiphasique, Faculté de Technologie, Université Ferhat Abbas-Sétif-1, Sétif, Algerie
| | - R. Krache
- Laboratoire des Materiaux Polymeriques Multiphasique, Faculté de Technologie, Université Ferhat Abbas-Sétif-1, Sétif, Algerie
| | - N. Aranburu
- Polymat, Department of Polymer Science and Technology, University of the Basque Country UPV/EHU, Donostia San Sebastian, Spain
| | - A. Etxeberria
- Polymat, Department of Polymer Science and Technology, University of the Basque Country UPV/EHU, Donostia San Sebastian, Spain
| | - E. Pérez
- Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Madrid, Spain
| | - R. Benavente
- Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Madrid, Spain
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Jiménez-Ubieto A, Grande C, Caballero D, Yáñez L, Novelli S, Hernández-Garcia MT, Manzanares M, Arranz R, Ferreiro JJ, Bobillo S, Mercadal S, Galeo A, Jiménez JL, Moraleda JM, Vallejo C, Albo C, Pérez E, Marrero C, Magnano L, Palomera L, Jarque I, Rodriguez A, Lorza L, Martín A, Coria E, López-Guillermo A, Salar A, José Lahuerta J. Autologous stem cell transplantation may be curative for patients with follicular lymphoma with early therapy failure without the need for immunotherapy. Hematol Oncol Stem Cell Ther 2019; 12:194-203. [DOI: 10.1016/j.hemonc.2019.06.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 06/23/2019] [Indexed: 12/01/2022] Open
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20
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Arco JD, Pérez E, Naitow H, Matsuura Y, Kunishima N, Fernández-Lucas J. Structural and functional characterization of thermostable biocatalysts for the synthesis of 6-aminopurine nucleoside-5'-monophospate analogues. Bioresour Technol 2019; 276:244-252. [PMID: 30640018 DOI: 10.1016/j.biortech.2018.12.120] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 12/26/2018] [Accepted: 12/29/2018] [Indexed: 06/09/2023]
Abstract
The present work describes the functional and structural characterization of adenine phosphoribosyltransferase 2 from Thermus thermophilus HB8 (TtAPRT2). The combination of structural and substrate specificity data provided valuable information for immobilization studies. Dimeric TtAPRT2 was immobilized onto glutaraldehyde-activated MagReSyn®Amine magnetic iron oxide porous microparticles by two different strategies: a) an enzyme immobilization at pH 8.5 to encourage the immobilization process by N-termini (MTtAPRT2A, MTtAPRT2B, MTtAPRT2C) or b) an enzyme immobilization at pH 10.0 to encourage the immobilization process through surface exposed lysine residues (MTtAPRT2D, MTtAPRT2E, MTtAPRT2F). According to catalyst load experiments, MTtAPRT2B (activity: 480 IU g-1biocatalyst, activity recovery: 52%) and MTtAPRT2F (activity: 507 IU g-1biocatalyst, activity recovery: 44%) were chosen as optimal derivatives. The biochemical characterization studies demonstrated that immobilization process improved the thermostability of TtAPRT2. Moreover, the potential reusability of MTtAPRT2B and MTtAPRT2F was also tested. Finally, MTtAPRT2F was employed in the synthesis of nucleoside-5'-monophosphate analogues.
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Affiliation(s)
- Jon Del Arco
- Applied Biotechnology Group, Biomedical Science School, Universidad Europea de Madrid, Urbanización El Bosque, Calle Tajo, s/n, 28670, Villaviciosa de Odón, Spain
| | - Elena Pérez
- Applied Biotechnology Group, Biomedical Science School, Universidad Europea de Madrid, Urbanización El Bosque, Calle Tajo, s/n, 28670, Villaviciosa de Odón, Spain
| | - Hisashi Naitow
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Yoshinori Matsuura
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Naoki Kunishima
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Jesús Fernández-Lucas
- Applied Biotechnology Group, Biomedical Science School, Universidad Europea de Madrid, Urbanización El Bosque, Calle Tajo, s/n, 28670, Villaviciosa de Odón, Spain; Grupo de Investigación en Desarrollo Agroindustrial Sostenible, Universidad de la Costa, CUC, Calle 58 # 55 - 66, Barranquilla, Colombia.
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Bueso-Ródenas J, Romero G, Navarro A, Pérez E, Díaz JR. Effect of the pulsation type (alternate or simultaneous) on milk yield and health status of the mammary gland of Murciano-Granadina goats. J Dairy Sci 2019; 102:3339-3347. [PMID: 30772030 DOI: 10.3168/jds.2018-15286] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 12/17/2018] [Indexed: 11/19/2022]
Abstract
Recent research into how the pulsation type affects goat milking concluded that alternate pulsation (AP) and simultaneous pulsation (SP) similarly affect the milking efficiency (milking duration and milking fractioning) and teat end condition after milking when both pulsations are employed in short-term experiments. However, the use of SP in high pipeline milking machines led to higher vacuum fluctuations, which, in the long term, may entail a potential risk factor for the mammary gland health status. The aim of this work was to study how AP and SP affect the milk yield, mammary gland health status, and milk composition of goats in the long term, during a complete lactation period, in a high pipeline milking machine. With this objective, 100 Murciano-Granadina goats with similar parturition dates (4 ± 1 postpartum weeks) were divided into 2 similar groups (50 goats per group) according their parity, milk yield, mammary gland health status, and milking duration (after a 15-d pre-experimental period). Throughout the experimental period (7 mo), one group was milked using SP and the other group using AP. Every month, samplings were carried out of the variables related to sanitary status of the mammary gland, milk fractioning, milking duration, average and maximum milk flows, milk composition, teat end status, vacuum fluctuations at the short milk tube during milking, and pulsation tests. Results showed that the use of SP in a high pipeline milking machine showed higher vacuum fluctuations without involving any difference in the other variables studied. We concluded that the use of AP in the milking of Murciano-Granadina goats offers little improvement of the milking performance and increases the investment required for installation and maintenance of the milking machines.
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Affiliation(s)
- J Bueso-Ródenas
- Dpto. Producción Animal y Salud Pública, Universidad Católica de Valencia (UCV), C/Guillem de Castro 94, 46001 Valencia, Spain
| | - G Romero
- Dpto. Tecnología Agroalimentaria, Universidad Miguel Hernández (UMH), Ctra. de Beniel km 3.2., 03312 Orihuela (Alicante), Spain
| | - A Navarro
- Dpto. Tecnología Agroalimentaria, Universidad Miguel Hernández (UMH), Ctra. de Beniel km 3.2., 03312 Orihuela (Alicante), Spain
| | - E Pérez
- Dpto. Tecnología Agroalimentaria, Universidad Miguel Hernández (UMH), Ctra. de Beniel km 3.2., 03312 Orihuela (Alicante), Spain
| | - J R Díaz
- Dpto. Tecnología Agroalimentaria, Universidad Miguel Hernández (UMH), Ctra. de Beniel km 3.2., 03312 Orihuela (Alicante), Spain.
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Vanaclocha-Espi M, Ibáñez J, Molina-Barceló A, Valverde-Roig MJ, Pérez E, Nolasco A, de la Vega M, de la Lastra-Bosch ID, Oceja ME, Espinàs JA, Font R, Pérez-Riquelme F, Arana-Arri E, Portillo I, Salas D. Risk factors for severe complications of colonoscopy in screening programs. Prev Med 2019; 118:304-308. [PMID: 30414944 DOI: 10.1016/j.ypmed.2018.11.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 10/05/2018] [Accepted: 11/07/2018] [Indexed: 02/07/2023]
Abstract
Severe complications (SC) in colonoscopy represent the most important adverse effect of colorectal cancer screening programs (CRCSP). The objective is to evaluate the risk factors for SC in colonoscopy indicated after a positive fecal occult blood test in population-based CRCSP. The SC (n = 161) identified from 48,730 diagnostic colonoscopies performed in a cohort of all the women and men invited from 2000 to 2012 in 6 CRCSP in Spain. A total of 318 controls were selected, matched for age, sex and period when the colonoscopy was performed. Conditional logistic regression models were estimated. The analysis was performed separately in groups: immediate-SC (same day of the colonoscopy); late-SC (between 1 and 30 days after); perforation; and bleeding events. SC occurred in 3.30‰ of colonoscopies. Prior colon disease showed a higher risk of SC (OR = 4.87). Regular antiplatelet treatment conferred a higher risk of overall SC (OR = 2.80) and late-SC (OR = 9.26), as did regular anticoagulant therapy (OR = 3.47, OR = 7.36). A history of pelvic-surgery or abdominal-radiotherapy was a risk factor for overall SC (OR = 5.03), immediate-SC (OR = 8.49), late-SC (OR = 4.65) and perforation (OR = 21.59). A finding of adenoma or cancer also showed a higher risk of overall SC (OR = 8.71), immediate-SC (OR = 12.67), late-SC (OR = 4.08), perforation (OR = 4.69) and bleeding (OR = 17.02). The risk of SC doesn't vary depending on the type of preparation or type of anesthesia. Knowing the clinical history of patients such as regular previous medication and history of surgery or radiotherapy, as well as the severity of the findings during the colonoscopy process could help to focus prevention measures in order to minimize SC in CRCSP.
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Affiliation(s)
| | - Josefa Ibáñez
- Cancer and Public Health Area, FISABIO - Public Health, Valencia, Spain; General Directorate Public Health, Valencian Community, Spain
| | | | | | - Elena Pérez
- General Directorate Public Health, Valencian Community, Spain
| | | | | | | | | | - Josep Alfons Espinàs
- Catalan Cancer Strategy, Department of Health, Catalonia, Spain; Biomedical Research Institute, Bellvitge, (IDIBELL) - L'Hospitalet de LLob, Barcelona, Spain
| | - Rebeca Font
- Catalan Cancer Strategy, Department of Health, Catalonia, Spain; Biomedical Research Institute, Bellvitge, (IDIBELL) - L'Hospitalet de LLob, Barcelona, Spain
| | - Francisco Pérez-Riquelme
- General Directorate Public Health, Murcia, Spain; Biomedical Research Institute of Murcia (IMIB-Arrixaca-UMU), University Clinical Hospital Virgen de la Arrixaca, University of Murcia, Spain
| | | | | | - Dolores Salas
- Cancer and Public Health Area, FISABIO - Public Health, Valencia, Spain; General Directorate Public Health, Valencian Community, Spain.
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Montero N, Pérez E, Benito M, Teijón C, Teijón JM, Olmo R, Blanco MD. Biocompatibility studies of intravenously administered ionic-crosslinked chitosan-BSA nanoparticles as vehicles for antitumour drugs. Int J Pharm 2018; 554:337-351. [PMID: 30439492 DOI: 10.1016/j.ijpharm.2018.11.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 11/08/2018] [Accepted: 11/11/2018] [Indexed: 01/21/2023]
Abstract
In this study, a new alternative of ionic crosslinked nanoparticles (NPs) based on chitosan (C) and bovine serum albumin (A; BSA) was evaluated as drug delivery system for antitumour compounds (doxorubicin hydrochloride as a model). The different responses to the pH of the medium were determined by the electrostatic interactions induced by each polymeric combination (C50/A50; C80/A20; C20/A80). NPs revealed a nanoscale size (167-392 nm) and a positive net charge (12-26 mV), modulated by doxorubicin (DOX) loading. Drug loading capacity was higher than 5.2 ± 1.8 μgDOX/mgNP (Encapsulation efficiency = 34%), and an initial burst release was followed by a sustained delivery. Cellular uptake assays confirmed the entry of NPs in three human tumor cells (MCF7, T47D and Hela), triggering antioxidant responses (superoxide dismutase, catalase, glutathione reductase and total glutathione content) in those cells. This was also consistent with the decreased in IC50 values observed after the incubation of these cells with C20/A80-DOX and C50/A50-DOX NPs (1.90-3.48 μg/mL) compared with free DOX (2.36-6.025 μg/mL). In vivo results suggested that the selected proportions of chitosan-BSA created nonhemolytic and biocompatible stable NPs at the selected dose of 20 mg/kg. Despite the different formulations, this study demonstrated that these NPs could serve as safe drug carriers in further in vivo investigations.
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Affiliation(s)
- Nuria Montero
- Universidad Complutense de Madrid, Facultad de Medicina, Departamento de Bioquímica y Biología Molecular III, Spain.
| | - Elena Pérez
- Universidad Complutense de Madrid, Facultad de Medicina, Departamento de Bioquímica y Biología Molecular III, Spain; Universidad Europea de Madrid, Faculty of Biomedical and Health Sciences, Departamento de Farmacia, Biotecnología, Nutrición, Óptica y Optometría, Department of Pharmacy, Biotechnology, Nutrition, Optics and Optometry, Spain.
| | - Marta Benito
- Universidad Complutense de Madrid, Facultad de Medicina, Departamento de Bioquímica y Biología Molecular III, Spain; Fundación San Juan de Dios, Centro de CC de la Salud San Rafael, Universidad Antonio de Nebrija, Spain.
| | - César Teijón
- Universidad Complutense de Madrid, Facultad de Enfermería, Fisioterapia y Podología, Departamento de Enfermería, Spain.
| | - José María Teijón
- Universidad Complutense de Madrid, Facultad de Medicina, Departamento de Bioquímica y Biología Molecular III, Spain.
| | - Rosa Olmo
- Universidad Complutense de Madrid, Facultad de Medicina, Departamento de Bioquímica y Biología Molecular III, Spain.
| | - M Dolores Blanco
- Universidad Complutense de Madrid, Facultad de Medicina, Departamento de Bioquímica y Biología Molecular III, Spain.
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Alvarado ED, López-Zamora L, Pérez CP, Pérez E, Vazquez-Lopez JA, González-Calderón JA. Effect of the reaction medium on the characteristics of silanized titanium dioxide particles: Differences obtained in the Zeta potential data and infrared spectra. Data Brief 2018; 21:1130-1134. [PMID: 30456225 PMCID: PMC6231040 DOI: 10.1016/j.dib.2018.10.107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 10/17/2018] [Accepted: 10/22/2018] [Indexed: 11/01/2022] Open
Abstract
In this document we present the differences in the Zeta potential and in the Infrared spectra data obtained from the characterization of silanized titanium dioxide particles, using two different solvents as reaction media: ethanol and toluene. Also, we provide micrographs of transmission electron microscopy in order to show morphological differences between the analyzed samples.
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Affiliation(s)
- E Delgado Alvarado
- Doctorado Institucional en Ingeniería y Ciencias de Materiales, Universidad Autónoma de San Luis Potosí, Zona Universitaria, Av. Dr Manuel Nava s/n, Lomas, C.P. 78290 San Luis Potosí, SLP, Mexico
| | - L López-Zamora
- División de Estudios de Posgrado e Investigación. Tecnológico Nacional de México/Instituto Tecnológico de Orizaba, Av. Oriente 9 No. 852. Col. Emiliano Zapata, C.P. 94320 Orizaba, Veracruz, Mexico
| | - Cristina Pérez Pérez
- Departamento de Ingeniería Bioquímica, Instituto Tecnológico de Celaya, Av. Tecnológico y Antonio García Cubas s/n, C.P. 38010 Celaya, Gto, Mexico
| | - E Pérez
- Instituto de Física, Universidad Autónoma de San Luis Potosí, Zona Universitaria, Av. Dr. Manuel Nava s/n, Lomas, C.P. 78290 San Luis Potosí, SLP, Mexico
| | - J A Vazquez-Lopez
- Departamento de Ingeniería Industrial, Instituto Tecnológico de Celaya, Av. Tecnológico y Antonio García Cubas s/n, C.P. 38010 Celaya, Gto, Mexico
| | - J A González-Calderón
- Departamento de Ingeniería Industrial, Instituto Tecnológico de Celaya, Av. Tecnológico y Antonio García Cubas s/n, C.P. 38010 Celaya, Gto, Mexico
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Jiménez-Ubieto A, Grande C, Caballero D, Yáñez L, Novelli S, Hernández-Garcia MT, Manzanares M, Arranz R, Ferreiro JJ, Bobillo S, Mercadal S, Galeo A, Jiménez JL, Moraleda JM, Vallejo C, Albo C, Pérez E, Marrero C, Magnano L, Palomera L, Jarque I, Martínez-Sánchez P, Martín A, Coria E, López-Guillermo A, Salar A, Lahuerta JJ. Autologous stem cell transplantation may be curative for patients with follicular lymphoma with early therapy failure who reach complete response after rescue treatment. Hematol Oncol 2018; 36:765-772. [PMID: 30129233 DOI: 10.1002/hon.2553] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Revised: 08/04/2018] [Accepted: 08/11/2018] [Indexed: 12/11/2022]
Affiliation(s)
| | | | | | - Lucrecia Yáñez
- Hospital Universitario Marqués de Valdecilla, Santander, Spain
| | | | | | | | - Reyes Arranz
- Hospital Universitario La Princesa, Madrid, Spain
| | | | | | - Santiago Mercadal
- Hospital Universitario de Bellvitge, l'Hospitalet de Llobregat, Spain
| | - Andrea Galeo
- Hospital Universitario A Coruña, A Coruña, Spain
| | | | | | | | | | - Elena Pérez
- Hospital Universitario Morales de Messeguer, Murcia, Spain
| | - Carmen Marrero
- Hospital Universitario Nuestra Señora de La Candelaria, Tenerife, Spain
| | | | - Luis Palomera
- Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain
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Pérez E, Sánchez‐Murcia PA, Jordaan J, Blanco MD, Mancheño JM, Gago F, Fernández‐Lucas J. Enzymatic Synthesis of Therapeutic Nucleosides using a Highly Versatile Purine Nucleoside 2’‐DeoxyribosylTransferase from
Trypanosoma brucei. ChemCatChem 2018. [DOI: 10.1002/cctc.201800775] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Elena Pérez
- Applied Biotechnology GroupUniversidad Europea de Madrid Villaviciosa de Odón E-28670 Spain
| | - Pedro A. Sánchez‐Murcia
- Institute of Theoretical Chemistry Faculty of ChemistryUniversity of Vienna Vienna 1090 Austria
| | - Justin Jordaan
- Biotechnology Innovation CentreRhodes University Grahamstown 6140 South Africa
- ReSyn Biosciences Meiring Naudé Road Brummeria Pretoria 0184 South Africa
| | - María Dolores Blanco
- Department of Biochemistry and Molecular Biology III School of MedicineUniversidad Complutense Madrid E-28040 Spain
| | - José Miguel Mancheño
- Department of Crystallography and Structural BiologyRocasolano Institute (CSIC) Madrid E-28006 Spain
| | - Federico Gago
- Department of Biomedical Sciences and “U. A. IQM-CSIC” School of Medicine and Health SciencesUniversity of Alcalá Alcalá de Henares E-28805 Spain
| | - Jesús Fernández‐Lucas
- Applied Biotechnology GroupUniversidad Europea de Madrid Villaviciosa de Odón E-28670 Spain
- Grupo de Investigación en Desarrollo Agroindustrial SostenibleUniversidad de la Costa Barranquilla 080002 Colombia
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Domenech-Ximenos B, Pérez E. Idiopathic lobular granulomatous mastitis: radiological management in two cases. Radiologia (Engl Ed) 2018; 60:359-360. [PMID: 29793678 DOI: 10.1016/j.rx.2018.03.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 02/16/2018] [Accepted: 03/29/2018] [Indexed: 11/19/2022]
Affiliation(s)
- B Domenech-Ximenos
- Servicio de Radiodiagnóstico, Hospital Universitario Josep Trueta, Girona, España.
| | - E Pérez
- Servicio de Radiodiagnóstico, Hospital Universitario Josep Trueta, Girona, España
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Furaz K, Gruss E, Barril G, Pérez E, De La Flor J, Benavides N, Mendez A, Martin R. SP54744 HOURS AMBULATORY BLOOD PRESSURE MONITORING CHARACTERISTICS AND CORRELATION WITH HEMODIALYSIS BLOOD PRESSURES MEASURES. Nephrol Dial Transplant 2018. [DOI: 10.1093/ndt/gfy104.sp547] [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: 11/14/2022] Open
Affiliation(s)
- K Furaz
- Nephrology, FRIAT, Móstoles, Madrid, Spain
| | - E Gruss
- Nephrology, Hospital Alcorcón, Alcorcon, Madrid, Spain
| | - G Barril
- Nephrology, Hospital de La Princesa, Madrid, Spain
| | - E Pérez
- Statistics, Hospital Alcorcon, Alcorcón, Madrid, Spain
| | | | | | - A Mendez
- Nephrology, FRIAT, Móstoles, Madrid, Spain
| | - R Martin
- Nephrology, FRIAT, Móstoles, Madrid, Spain
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Rodríguez-Rey R, Palacios A, Alonso-Tapia J, Pérez E, Álvarez E, Coca A, Mencía S, Marcos A, Mayordomo-Colunga J, Fernández F, Gómez F, Cruz J, Ordóñez O, Llorente A. Burnout and posttraumatic stress in paediatric critical care personnel: Prediction from resilience and coping styles. Aust Crit Care 2018; 32:46-53. [PMID: 29605169 DOI: 10.1016/j.aucc.2018.02.003] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 01/24/2018] [Accepted: 02/08/2018] [Indexed: 10/17/2022] Open
Abstract
INTRODUCTION Our aims were (1) to explore the prevalence of burnout syndrome (BOS) and posttraumatic stress disorder (PTSD) in a sample of Spanish staff working in the paediatric intensive care unit (PICU) and compare these rates with a sample of general paediatric staff and (2) to explore how resilience, coping strategies, and professional and demographic variables influence BOS and PTSD. MATERIALS AND METHODS This is a multicentre, cross-sectional study. Data were collected in the PICU and in other paediatric wards of nine hospitals. Participants consisted of 298 PICU staff members (57 physicians, 177 nurses, and 64 nursing assistants) and 189 professionals working in non-critical paediatric units (53 physicians, 104 nurses, and 32 nursing assistants). They completed the Brief Resilience Scale, the Coping Strategies Questionnaire for healthcare providers, the Maslach Burnout Inventory, and the Trauma Screening Questionnaire. RESULTS Fifty-six percent of PICU working staff reported burnout in at least one dimension (36.20% scored over the cut-off for emotional exhaustion, 27.20% for depersonalisation, and 20.10% for low personal accomplishment), and 20.1% reported PTSD. There were no differences in burnout and PTSD scores between PICU and non-PICU staff members, either among physicians, nurses, or nursing assistants. Higher burnout and PTSD rates emerged after the death of a child and/or conflicts with patients/families or colleagues. Around 30% of the variance in BOS and PTSD is predicted by a frequent usage of the emotion-focused coping style and an infrequent usage of the problem-focused coping style. DISCUSSION AND CONCLUSIONS Interventions to prevent and treat distress among paediatric staff members are needed and should be focused on: (i) promoting active emotional processing of traumatic events and encouraging positive thinking; (ii) developing a sense of detached concern; (iii) improving the ability to solve interpersonal conflicts, and (iv) providing adequate training in end-of-life care.
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Affiliation(s)
- Rocío Rodríguez-Rey
- Department of Psychology, School of Biomedical Sciences, European University of Madrid, Spain.
| | - Alba Palacios
- Pediatric Intensive Care Unit, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Jesús Alonso-Tapia
- Department of Biological and Health Psychology, Universidad Autónoma de Madrid, Spain
| | - Elena Pérez
- Pediatric Intensive Care Unit, Hospital Universitario Cruces, Barakaldo, País Vasco, Spain
| | - Elena Álvarez
- Pediatric Intensive Care Unit, Hospital Universitario La Paz, Madrid, Spain
| | - Ana Coca
- Pediatric Intensive Care Unit, Hospital Universitario Ramón y Cajal, Spain
| | - Santiago Mencía
- Pediatric Intensive Care Unit, Hospital General Universitario Gregorio Marañón, Spain
| | - Ana Marcos
- Pediatric Intensive Care Unit, Hospital Universitario Virgen de la Arrixaca, Murcia, Spain
| | - Juan Mayordomo-Colunga
- Pediatric Intensive Care Unit, Hospital Universitario Central de Asturias, Oviedo, Spain
| | | | - Fernando Gómez
- Pediatric Intensive Care Unit, Hospital General Yagüe, Burgos, Spain
| | - Jaime Cruz
- Pediatric Intensive Care Unit, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Olga Ordóñez
- Pediatric Intensive Care Unit, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Ana Llorente
- Pediatric Intensive Care Unit, Hospital Universitario 12 de Octubre, Madrid, Spain
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Jiménez-Ubieto A, Grande C, Caballero D, Yáñez L, Hernández-Garcia MT, Novelli S, Arranz R, Ferreiro JJ, Bobillo S, Mercadal S, Galeo A, Jiménez JL, Moraleda JM, Vallejo C, Albo C, Pérez E, Marrero C, Magnano L, Palomera L, Jarque I, Martínez-Sánchez P, Martín A, Coria E, López-Guillermo A, Salar A, Lahuerta JJ. Secondary malignancies and survival outcomes after autologous stem cell transplantation for follicular lymphoma in the pre-rituximab and rituximab eras: a long-term follow-up analysis from the Spanish GELTAMO registry. Bone Marrow Transplant 2018; 53:780-783. [DOI: 10.1038/s41409-018-0096-6] [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] [Received: 11/21/2017] [Revised: 12/11/2017] [Accepted: 01/02/2018] [Indexed: 11/09/2022]
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Vanaclocha-Espi M, Ibáñez J, Molina-Barceló A, Pérez E, Nolasco A, Font R, Pérez-Riquelme F, de la Vega M, Arana-Arri E, Oceja M, Espinàs JA, Portillo I, Salas D. Factors influencing participation in colorectal cancer screening programs in Spain. Prev Med 2017; 105:190-196. [PMID: 28887191 DOI: 10.1016/j.ypmed.2017.08.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 07/10/2017] [Accepted: 08/16/2017] [Indexed: 12/31/2022]
Abstract
To analyze the sociodemographic and organizational factors influencing participation in population-based colorectal cancer screening programs (CRCSP) in Spain, a retrospective study was conducted in a cohort of people invited to participate in the first 3 screening rounds of 6 CRCSP from 2000 to 2012. Mixed logistic regression models were used to analyze the relationship between sociodemographic and organizational factors, such as the type of fecal occult blood test (FOBT) used and the FOBT delivery type. The analysis was performed separately in groups (Initial screening-first invitation, Subsequent invitation for previous never-responders, Subsequent invitation-regular, Subsequent invitation-irregular intervals). The results showed that, in the Initial screening-first invitation group, participation was higher in women than in men in all age groups (OR 1.05 in persons aged 50-59years and OR 1.12 in those aged 60-69years). Participation was also higher when no action was required to receive the FOBT kit, independently of the type of screening (Initial screening-first invitation [OR 2.24], Subsequent invitation for previous never-responders [OR 2.14], Subsequent invitation-regular [OR 2.03], Subsequent invitation-irregular intervals [OR 9.38]) and when quantitative rather than qualitative immunological FOBT (FIT) was offered (Initial screening-first invitation [OR 0.70], Subsequent invitation for previous never-responders [OR 0.12], Subsequent invitation-regular [OR 0.20]) or guaiac testing (Initial screening-first invitation [OR 0.81], Subsequent invitation for previous never-responders [OR 0.88], Subsequent invitation-regular [OR 0.73]). In conclusion, the results of this study show that screening participation could be enhanced by inclusion of the FOBT kit with the screening invitation and the use of the quantitative FIT.
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Affiliation(s)
| | - Josefa Ibáñez
- Cancer and Public Health Area, FISABIO - Public Health, Valencia, Spain; General Directorate Public Health, Valencian Community, Spain
| | | | - Elena Pérez
- Cancer and Public Health Area, FISABIO - Public Health, Valencia, Spain; General Directorate Public Health, Valencian Community, Spain
| | | | - Rebeca Font
- Catalan Cancer Strategy, Department of Health, Catalonia, Spain; Biomedical Research Institute, Bellvitge, (IDIBELL) - L'Hospitalet de LLob, Barcelona, Spain
| | - Francisco Pérez-Riquelme
- General Directorate Public Health, Murcia, Spain; Biomedical Research Institute of Murcia (IMIB-Arrixaca-UMU), University Clinical Hospital "Virgen de la Arrixaca", University of Murcia, Spain
| | | | | | | | - Josep Alfons Espinàs
- Catalan Cancer Strategy, Department of Health, Catalonia, Spain; Biomedical Research Institute, Bellvitge, (IDIBELL) - L'Hospitalet de LLob, Barcelona, Spain
| | | | - Dolores Salas
- Cancer and Public Health Area, FISABIO - Public Health, Valencia, Spain; General Directorate Public Health, Valencian Community, Spain.
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Aregahegn Z, Guesh K, S. Chandravanshi B, Pérez E. Application of chemometric methods to resolve intermediates formed during photo- catalytic degradation of methyl orange and textile wastewater from Ethiopia. B CHEM SOC ETHIOPIA 2017. [DOI: 10.4314/bcse.v31i2.4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Martínez AM, Benito M, Pérez E, María Teijón J, Dolores Blanco M. The Role of Anionic Polysaccharides in the Preparation of Nanomedicines with Anticancer Applications. Curr Pharm Des 2017; 22:3364-79. [PMID: 26818877 DOI: 10.2174/1381612822666160128145125] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 01/26/2016] [Indexed: 11/22/2022]
Abstract
Cancer has become one of the main causes of death in developed countries, and it is expected to be declared as the disease with the highest worldwide morbidity and mortality indexes in the coming decades. Nanomedicine aims to overcome some problems related to this prevalent disease, particularly the lack of efficient diagnostic and therapeutic tools. The most recent scientific advances, which have conducted to a more personalized medicine, were focused on the production of nanocarriers involved into the transport and the delivery of drugs to targeted cells. A wide variety of nanocarriers composed by different materials have been designed for their use as drug delivery systems. Polysaccharides have emerged as very useful biopolymers among all raw materials used in the preparation of these nanoplatforms. They are highly stable, non-toxic and biodegradable molecules, and also present some chemical properties which are very difficult to reproduce using artificial polymers. Anionic polymers, such as hyaluronic acid, heparin or alginate, present some structural and chemical characteristics which make them ideal polymers to prepare nanosystems with anticancer applications. This review will focus on the description of some anionic polysaccharides and the possibilities they offer towards the preparation of nanosystems with applications in cancer treatment and diagnostics.
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Affiliation(s)
- Ana M Martínez
- Departamento de Bioquímica y Biología Molecular. Pabellón IV., Facultad de Medicina. Universidad Complutense de Madrid, Avda. Complutense s/n, 28040 Madrid, Spain.
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Jiménez-Ubieto A, Grande C, Caballero D, Yáñez L, Novelli S, Hernández MT, Manzanares M, Arranz R, Ferreiro JJ, Bobillo S, Mercadal S, Galego A, Jiménez JL, Moraleda JM, Vallejo C, Albo C, Pérez E, Marrero C, Magnano L, Palomera L, Jarque I, Coria E, Rodriguez A, Martín A, López-Guillermo A, Salar A, Lahuerta JJ. Progression-free survival at 2 years post-autologous transplant: a surrogate end point for overall survival in follicular lymphoma. Cancer Med 2017; 6:2766-2774. [PMID: 29076254 PMCID: PMC5727300 DOI: 10.1002/cam4.1217] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 07/05/2017] [Accepted: 08/31/2017] [Indexed: 01/19/2023] Open
Abstract
Overall survival (OS) is the gold‐standard end point for studies evaluating autologous stem cell transplantation (ASCT) in follicular lymphoma (FL), but assessment may be elusive due to the lengthy disease course. We analyzed the validity of two earlier end points, proposed in the setting of first‐line chemo‐/immunotherapy, as surrogates for OS—progression‐free survival (PFS) status at 24 months (PFS24) and complete response at 30 months (CR30) post‐ASCT. We also have investigated the clinical features of patients with early progression after ASCT. Data were available for 626 chemosensitive FL patients who received ASCT between 1989 and 2007. Median follow‐up was 12.2 years from ASCT. In the PFS24 analysis, 153 (24%) patients progressed within 24 months and 447 were alive and progression‐free at 24 months post‐ASCT (26 who died without disease progressions within 24 months were excluded). Early progression was associated with shorter OS (hazard ratio [HR], 6.8; P = 0.00001). In the subgroup of patients who received an ASCT in the setting or relapse after being exposed to rituximab, the HR was 11.3 (95% CI, 3.9–30.2; P < 0.00001). In the CR30 analysis, 183 of 596 (31%) response‐evaluable patients progressed/died with 30 months post‐ASCT. The absence of CR30 was associated with shorter OS (HR, 7.8; P < 0.00001), including in patients with prior rituximab (HR, 8.2). PFS24 and CR30 post‐ASCT are associated with poor outcomes and should be primary end points. Further research is needed to identify this population to be offered alternative treatments.
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Affiliation(s)
| | - Carlos Grande
- Hospital Universitario, 12 de Octubre, Madrid, Spain
| | | | - Lucrecia Yáñez
- Hospital Universitario Marqués de Valdecilla, Santander, Spain
| | | | | | | | - Reyes Arranz
- Hospital Universitario La Princesa, Madrid, Spain
| | | | | | - Santiago Mercadal
- Hospital Universitario de Bellvitge, l'Hospitalet de Llobregat, Spain
| | | | | | | | | | | | - Elena Pérez
- Hospital Universitario Morales de Messeguer, Murcia, Spain
| | - Carmen Marrero
- Hospital Universitario Nuestra Señora de La Candelaria, Tenerife, Spain
| | | | - Luis Palomera
- Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain
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Jiménez-Ubieto A, Grande C, Caballero D, Yáñez L, Novelli S, Hernández-Garcia MT, Manzanares M, Arranz R, Ferreiro JJ, Bobillo S, Mercadal S, Galeo A, López Jiménez J, Moraleda JM, Vallejo C, Albo C, Pérez E, Marrero C, Magnano L, Palomera L, Jarque I, Martínez-Sánchez P, Martín A, Coria E, López-Guillermo A, Salar A, Lahuerta JJ. Autologous Stem Cell Transplantation for Follicular Lymphoma: Favorable Long-Term Survival Irrespective of Pretransplantation Rituximab Exposure. Biol Blood Marrow Transplant 2017; 23:1631-1640. [PMID: 28533060 DOI: 10.1016/j.bbmt.2017.05.021] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 05/17/2017] [Indexed: 11/25/2022]
Abstract
High-dose chemotherapy supported by autologous stem cell transplantation (HDT/ASCT) has contributed to modify the natural history of follicular lymphoma (FL); however, an overall survival (OS) benefit has been demonstrated at relapse only after a rituximab-free chemotherapy regimen. A total of 655 patients with FL were reported to the Spanish GELTAMO (Grupo Español de Linfomas y Trasplantes de Médula Ósea) registry and underwent first ASCT between 1989 and 2007. A total of 203 patients underwent ASCT in first complete response (CR1), 174 in second complete response (CR2), 28 in third complete response (CR3), 140 in first partial response (PR1), 81 in subsequent PR, and 29 with resistant/refractory disease; 184 patients received rituximab before ASCT. With a median follow-up of 12 years from ASCT, median progression-free survival (PFS) and overall survival (OS) were 9.7 and 21.3 years, respectively. Actuarial 12-year PFS and OS were 63% (95% confidence interval [CI], 58%-68%) and 73% (95% CI, 68%-78%), respectively, for patients in CR (with a plateau in the curve beyond 15.9 years), 25% (95% CI, 19%-28%) and 49% (95% CI 42%-56%), respectively, for patients in PR, and 23% (95% CI, 8%-48%) and 28% (95% CI, 9%-45%), respectively, for patients with resistant/refractory disease (P < .001). In patients who received rituximab before ASCT, the estimated 9-year PFS and OS from ASCT were 59.5% (95% CI, 51%-67%) and 75% (95% CI, 68%-83%), respectively. Interestingly, for patients who underwent transplantation in CR ≥2 or PR ≥2 who had received rituximab before ASCT (n = 90), 9-year PFS and OS were 61% (95% CI, 51%-73%) and 75% (95% CI, 65%-80%), respectively, with no relapses occurring beyond 5.1 years after ASCT. The cumulative incidence of second malignancies in the global series was 6.7% at 5 years and 12.8% at 10 years. This analysis strongly suggests that ASCT is a potentially curative option for eligible patients with FL. In the setting of relapse, it is of especial interest in pretransplantation rituximab-sensitive patients with FL.
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Affiliation(s)
| | | | | | - Lucrecia Yáñez
- Hospital Universitario Marqués de Valdecilla, Santander, Spain
| | | | | | | | - Reyes Arranz
- Hospital Universitario La Princesa, Madrid, Spain
| | | | | | - Santiago Mercadal
- Hospital Universitario de Bellvitge, l'Hospitalet de Llobregat, Spain
| | - Andrea Galeo
- Hospital Universitario A Coruña, A Coruña, Spain
| | | | | | | | | | - Elena Pérez
- Hospital Universitario Morales de Messeguer, Murcia, Spain
| | - Carmen Marrero
- Hospital Universitario Nuestra Señora de La Candelaria, Tenerife, Spain
| | | | - Luis Palomera
- Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain
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Sánchez BS, Tato LMP, Martín SG, Pérez E, Grasa C, Valderrama S, Augusto ID, Sierra M, Ros MG, Aguado I, Hortelano MGL. Imported malaria in children in Madrid, Spain, 2007-2013. Enferm Infecc Microbiol Clin 2017; 35:348-353. [PMID: 28237435 DOI: 10.1016/j.eimc.2016.11.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Revised: 10/20/2016] [Accepted: 11/27/2016] [Indexed: 02/08/2023]
Abstract
BACKGROUND The majority of malaria cases diagnosed in Europe in the last few years have occurred in people living in non-endemic areas travelling back to their home country to visit friends and relatives (VFRs). Children account for 15-20% of imported malaria, with known higher risk of severe disease. MATERIAL AND METHODS A retrospective multicentre study was conducted in 24 hospitals in Madrid (Spain) including patients under 16 years diagnosed with malaria (2007-2013). RESULTS A total of 149 episodes in 147 children were reported. Plasmodium falciparum was the species most commonly isolated. Twenty-five patients developed severe malaria and there was one death related to malaria. VFR accounted for 45.8% of our children. Only 17 VFRs had received prophylaxis, and 4 of them taken appropriately. They presented more frequently with fever (98% vs. 69%), a longer time with fever (55 vs. 26%), delay in diagnosis of more than three days (62 vs. 37%), and more thrombocytopenia (65 vs. 33%) than non-VFRs, and with significant differences (p<0.05). CONCLUSIONS VFRs represent a large proportion of imported malaria cases in our study. They seldom took adequate prophylaxis, and delayed the visit to the physician, increasing the length of fever and subsequent delaying in diagnosis. Appropriate preventive measures, such as education and pre-travel advices should be taken in this population.
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Affiliation(s)
| | - L M Prieto Tato
- Department of Pediatrics, Hospital Universitario de Getafe, Madrid, Spain
| | - S Guillén Martín
- Department of Pediatrics, Hospital Universitario de Getafe, Madrid, Spain
| | - E Pérez
- Hospital Principe de Asturias, Madrid, Spain
| | - C Grasa
- Department of Pediatrics, Hospital Universitario de Fuenlabrada, Madrid, Spain
| | - S Valderrama
- Department of Pediatrics, Hospital Universitario de Móstoles, Madrid, Spain
| | - I de Augusto
- Department of Pediatrics, Hospital Universitario La Paz, Madrid, Spain
| | - M Sierra
- Department of Pediatrics, Hospital Infantil Universitario Niño Jesús, Madrid, Spain
| | - M García Ros
- Department of Pediatrics, Hospital Universitario Doce de Octubre, Madrid, Spain
| | - I Aguado
- Department of Pediatrics, Hospital Severo Ochoa Leganés, Spain
| | - M García López Hortelano
- Department of Pediatric Infectious Diseases, Hospital Universitario La Paz-Carlos III, Madrid, Spain
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Rodríguez-Rey R, Palacios A, Alonso-Tapia J, Pérez E, Álvarez E, Coca A, Mencía S, Marcos AM, Mayordomo-Colunga J, Fernández F, Gómez F, Cruz J, Barón L, Calderón RM, Belda S. Posttraumatic growth in pediatric intensive care personnel: Dependence on resilience and coping strategies. Psychol Trauma 2016; 9:407-415. [PMID: 27929306 DOI: 10.1037/tra0000211] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Staff in pediatric intensive care units (PICU) are inherently exposed to potentially traumatic events. Posttraumatic growth (PTG) is the occurrence of positive changes after experiencing a traumatic event. This study aims (a) to evaluate the prevalence of PTG in PICU staff, and whether their scores are different from those reported by professionals working in other pediatric units, (b) to explore the role of resilience and coping strategies in predicting PTG, and (c) to explore the relation of demographic and work-related variables with PTG. METHOD Participants of this multicentric, cross sectional study were 298 PICU workers and 189 professionals working in noncritical pediatric units. They completed the Brief Resilience Scale, a Coping Strategies Questionnaire, the Posttraumatic Growth Inventory (PTGI), and provided demographic and work-related information. RESULTS Of PICU staff, 68.8% experienced growth to a "great" or "very great" degree in at least one of the PTGI's dimensions. Higher PTG was reported following the death of a child or after a recent conflict with a work colleague. PICU workers and noncritical pediatric staff showed equivalent PTG levels. Multigroup path analysis with latent variables showed that emotion-focused coping was related to PTG only in PICU staff, whereas problem-focused coping was related to PTG in both groups. The relation between resilience and PTG was not significant. CONCLUSIONS Work-related trauma can act as a catalyst for positive posttrauma changes. Modifying coping strategies may be a way to foster PTG in health care providers. (PsycINFO Database Record
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Affiliation(s)
- Rocío Rodríguez-Rey
- Department of Biological and Health Psychology, Universidad Autónoma de Madrid
| | - Alba Palacios
- Pediatric Intensive Care Unit, Hospital Universitario 12 de Octubre
| | - Jesús Alonso-Tapia
- Department of Biological and Health Psychology, Universidad Autónoma de Madrid
| | - Elena Pérez
- Pediatric Intensive Care Unit, Hospital Universitario Cruces, Barakaldo
| | - Elena Álvarez
- Pediatric Intensive Care Unit, Hospital Universitario La Paz
| | - Ana Coca
- Pediatric Intensive Care Unit, Hospital Universitario Ramón y Cajal
| | - Santiago Mencía
- Pediatric Intensive Care Unit, Hospital General Universitario Gregorio Marañón
| | - Ana Maria Marcos
- Pediatric Intensive Care Unit, Hospital Universitario Virgen de la Arrixaca
| | | | | | | | - Jaime Cruz
- Pediatric Intensive Care Unit, Hospital Universitario 12 de Octubre
| | - Luisa Barón
- Pediatric Intensive Care Unit, Hospital Universitario 12 de Octubre
| | | | - Sylvia Belda
- Pediatric Intensive Care Unit, Hospital Universitario 12 de Octubre
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Beltrán F, de la Orden M, Lorenzo V, Pérez E, Cerrada M, Martínez Urreaga J. Water-induced structural changes in poly(lactic acid) and PLLA-clay nanocomposites. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.11.031] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Peñalver FJ, Sancho JM, de la Fuente A, Olave MT, Martín A, Panizo C, Pérez E, Salar A, Orfao A. Guidelines for diagnosis, prevention and management of central nervous system involvement in diffuse large B-cell lymphoma patients by the Spanish Lymphoma Group (GELTAMO). Haematologica 2016; 102:235-245. [PMID: 27846613 DOI: 10.3324/haematol.2016.149120] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 10/07/2016] [Indexed: 02/01/2023] Open
Abstract
Diffuse large B-cell lymphoma patients have a 5% overall risk of central nervous system events (relapse or progression), which account for high morbidity and frequently fatal outcomes,1 and shortened overall survival of <6 months.2 Early diagnosis of central nervous system events is critical for successful treatment and improved prognosis. Identification of patients at risk of central nervous system disease is critical to accurately identify candidates for central nervous system prophylaxis vs. THERAPY 3-5 This report by the Spanish Lymphoma Group (GELTAMO) aims to provide useful guidelines and recommendations for the prevention, diagnosis, and treatment of central nervous system diffuse large B-cell lymphoma patients with, or at risk of, leptomeningeal and/or brain parenchyma lymphoma relapse. A panel of lymphoma experts working on behalf of GELTAMO reviewed all data published on these topics available in PubMed up to May 2016. Recommendations were classified according to the Grading of Recommendations Assessment Development and Evaluation (GRADE) approach.6 A practical algorithm based on the proposed recommendations was then developed (Figure 1). Initial discussions among experts were held in May 2014, and final consensus was reached in June 2016. The final manuscript was reviewed by all authors and the Scientific Committee of GELTAMO.
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Affiliation(s)
| | - Juan-Manuel Sancho
- Clinical Hematology Department, ICO-IJC Hospital Germans Trias i Pujol, Badalona, Barcelona, Spain
| | | | - María-Teresa Olave
- Department of Hematology, Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain
| | - Alejandro Martín
- Department of Hematology, Hospital Universitario de Salamanca, Department of Medicine, Cytometry Service (NUCLEUS) and Cancer Research Center (IBMCC-USAL-CSIC) and IBSAL, University of Salamanca, Pamplona, Spain
| | - Carlos Panizo
- Department of Hematology, Clínica Universidad de Navarra, Pamplona, Spain
| | - Elena Pérez
- Department of Hematology, Hospital General Universitario Morales Meseguer, Murcia, Spain
| | - Antonio Salar
- Department of Hematology, Hospital del Mar, Barcelona, Spain
| | - Alberto Orfao
- Department of Hematology, Hospital Universitario de Salamanca, Department of Medicine, Cytometry Service (NUCLEUS) and Cancer Research Center (IBMCC-USAL-CSIC) and IBSAL, University of Salamanca, Pamplona, Spain
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Gama Goicochea A, López-Esparza R, Balderas Altamirano M, Rivera-Paz E, Waldo-Mendoza M, Pérez E. Friction coefficient and viscosity of polymer brushes with and without free polymers as slip agents. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.03.039] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [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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Affiliation(s)
| | - R. Camacho
- Doctorado Institucional en Ingeniería y Ciencia de Materiales (DICIM-UASLP), Universidad Autónoma de San Luis Potosí, San Luis Potosí, S.L.P., Mexico
| | - E. Pérez
- Instituto de Física, Universidad Autónoma de San Luis Potosí, San Luis Potosí, S.L.P., Mexico
- Doctorado Institucional en Ingeniería y Ciencia de Materiales (DICIM-UASLP), Universidad Autónoma de San Luis Potosí, San Luis Potosí, S.L.P., Mexico
| | - A. Gama Goicochea
- División de Ingeniería Química y Bioquímica, Tecnológico de Estudios Superiores de Ecatepec, Estado de México, Mexico
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Acosta P, Pérez N, Pérez E, Correa B, Pérez C, Gómez C, Sánchez V, Pérez DG. Anti-inflammatory effect of dialysable leucocyte extract in a rat model of osteoarthritis: histopathological and molecular characterization. Scand J Rheumatol 2016; 45:528-535. [PMID: 27098310 DOI: 10.3109/03009742.2016.1153140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
OBJECTIVES To evaluate the effect of dialysable leucocyte extract (DLE) on pro- and anti-inflammatory profiles in a rat model of osteoarthritis (OA). METHOD Forty-eight male Wistar rats were divided into three groups: normal rats without treatment, OA rats treated with placebo, and OA rats treated with DLE. After treatment, the animals were killed to obtain cartilage for histological analysis and to determine the expression of pro- and anti-inflammatory cytokines by reverse transcription multiplex polymerase chain reaction (RT-MPCR) and immunohistofluorescence analyses. RESULTS Histological analysis revealed that OA cartilage from rats treated with DLE displayed similar characteristics to non-OA cartilage from the control group. The OA cartilage treated with placebo showed alterations in the cellular architecture and in chondrocyte cluster formation. Analysis of cytokine expression by RT-MPCR showed that OA cartilage from DLE-treated rats expressed platelet-derived growth factor (PDGF), interferon (IFN)-γ, and fibroblast growth factor (FGF)-2, similar to non-OA cartilage from the control group. However, OA cartilage from rats treated with placebo expressed interleukin (IL)-1, PDGF, and I kappa B (IκB). Confocal immunodetection of FGF-2, PDGF, and non-phosphorylated IκB showed that they were distributed in the cytoplasm of most chondrocytes in OA cartilage from DLE-treated rats whereas no nuclear factor kappa B (NF-κB) expression was observed in the nuclei. Instead, in OA cartilage from the placebo group, only weak FGF-2 staining was observed, PDGF and IκB were not detected, and NF-κB was strongly observed in both cytoplasm and nuclei. CONCLUSIONS Our findings suggest that DLE treatment modifies the OA process, promoting the expression of anti-inflammatory cytokines and diminishing the inflammatory effects, avoiding the nuclear translocation of NF-κB in chondrocytes.
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Affiliation(s)
- P Acosta
- a Laboratory of Molecular Biomedicine , National School of Medicine and Homeopathy (ENMH), National Polytechnic Institute (IPN) , Mexico City , Mexico
| | - N Pérez
- a Laboratory of Molecular Biomedicine , National School of Medicine and Homeopathy (ENMH), National Polytechnic Institute (IPN) , Mexico City , Mexico
| | - E Pérez
- b Hospital Dr Victorio de la Fuente Narváez , Mexico City , Mexico
| | - B Correa
- c Bioexport, SA de CV , Mexico City , Mexico
| | - C Pérez
- c Bioexport, SA de CV , Mexico City , Mexico
| | - C Gómez
- a Laboratory of Molecular Biomedicine , National School of Medicine and Homeopathy (ENMH), National Polytechnic Institute (IPN) , Mexico City , Mexico
| | - V Sánchez
- a Laboratory of Molecular Biomedicine , National School of Medicine and Homeopathy (ENMH), National Polytechnic Institute (IPN) , Mexico City , Mexico
| | - D G Pérez
- a Laboratory of Molecular Biomedicine , National School of Medicine and Homeopathy (ENMH), National Polytechnic Institute (IPN) , Mexico City , Mexico
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Santana MD, López-Banet L, Sánchez G, Pérez J, Pérez E, García L, Serrano JL, Espinosa A. Non-covalent stacking interactions directing the structural and photophysical features of mono- and dinuclear cyclometalated palladium(ii) complexes. Dalton Trans 2016; 45:8601-13. [DOI: 10.1039/c5dt04913j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cyclometallated Pd(ii) complexes with different stackings show emission in solid state in relationship to them.
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Affiliation(s)
- M. D. Santana
- Departamento de Química Inorgánica and Regional Campus of International Excellence (Campus Mare Nostrum)
- Universidad de Murcia
- E-30071 Murcia
- Spain
| | - L. López-Banet
- Departamento de Química Inorgánica and Regional Campus of International Excellence (Campus Mare Nostrum)
- Universidad de Murcia
- E-30071 Murcia
- Spain
| | - G. Sánchez
- Departamento de Química Inorgánica and Regional Campus of International Excellence (Campus Mare Nostrum)
- Universidad de Murcia
- E-30071 Murcia
- Spain
| | - J. Pérez
- Departamento de Ingeniería Minera
- Geológica y Cartográfica. Área de Química Inorgánica. Universidad Politécnica de Cartagena
- Cartagena
- Spain
| | - E. Pérez
- Departamento de Ingeniería Minera
- Geológica y Cartográfica. Área de Química Inorgánica. Universidad Politécnica de Cartagena
- Cartagena
- Spain
| | - L. García
- Departamento de Ingeniería Minera
- Geológica y Cartográfica. Área de Química Inorgánica. Universidad Politécnica de Cartagena
- Cartagena
- Spain
| | - J. L. Serrano
- Departamento de Ingeniería Minera
- Geológica y Cartográfica. Área de Química Inorgánica. Universidad Politécnica de Cartagena
- Cartagena
- Spain
| | - A. Espinosa
- Departamento de Química Orgánica
- Universidad de Murcia
- E-30071 Murcia
- Spain
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Pérez E, Olmo R, Teijón C, Muñíz E, Montero N, Teijón JM, Blanco MD. Biocompatibility evaluation of pH and glutathione-responsive nanohydrogels after intravenous administration. Colloids Surf B Biointerfaces 2015; 136:222-31. [DOI: 10.1016/j.colsurfb.2015.09.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 08/21/2015] [Accepted: 09/10/2015] [Indexed: 12/13/2022]
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Agámez Medina GL, González-Arévalo A, Gómez-Arnau JI, García del Valle S, Rubio JA, Esteban E, Pérez E. Effects of droperidol and ondansetron on dispersion of ventricular repolarization: A randomized double-blind clinical study in anesthetized adult patients. Rev Esp Anestesiol Reanim 2015; 62:495-501. [PMID: 25887095 DOI: 10.1016/j.redar.2015.01.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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: 06/19/2014] [Revised: 01/28/2015] [Accepted: 01/29/2015] [Indexed: 06/04/2023]
Abstract
BACKGROUND AND OBJECTIVE Droperidol and ondansetron prolong QT interval, a circumstance that has raised some concerns regarding the possibility of inducing torsades de pointes (TdP). However drug-induced spatial dispersion of ventricular repolarization has been shown to be the principal arrhythmogenic substrate for TdP. The aim of this study is to explore the effects of droperidol and ondansetron on the dispersion of repolarization, measured using the T peak-to-end interval (Tp-e) and Tp-e/QT and Tp-e/RR(1/2) ratios in surgical anesthetized patients. METHODS A randomized, double-blind study carried out on sixty-three adult patients without cardiac disease or factors favoring QT prolongation and undergoing non-cardiac surgery were randomly assigned to the droperidol or ondansetron group. Under propofol anesthesia, a 12-lead EKG was obtained, and 1.25mg droperidol or 4mg ondansetron was injected. Five minutes later, a new 12-lead EKG was recorded. EKG analyses were independently performed by two cardiologists blinded to the state of the traces or group allocation. QT, RR and Tp-e intervals were measured by averaging five successive beats in leadII (QT) or V5 (Tp-e). The mean value for each measurement was calculated for statistical analysis. RESULTS Thirty-two patients (19 women) received droperidol, and 31 (22 women) ondansetron. Droperidol and ondansetron prolonged the QTcF interval (Fridericia formula) by 6.8 and 7.2ms (mean values) respectively, but neither droperidol nor ondansetron increased the Tp-e interval or Tp-e/QT and Tp-e/RR(1/2) ratios. CONCLUSION At antiemetic doses, neither ondansetron (4mg) nor droperidol (1.25mg) increases the dispersion of ventricular repolarization in healthy adult patients anesthetized with propofol.
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Affiliation(s)
- G L Agámez Medina
- Departamento de Anestesiología y Reanimación, Hospital Universitario Fundación Alcorcón, Alcorcón, Madrid, España.
| | - A González-Arévalo
- Departamento de Anestesiología y Reanimación, Hospital Universitario Fundación Alcorcón, Alcorcón, Madrid, España
| | - J I Gómez-Arnau
- Departamento de Anestesiología y Reanimación, Hospital Universitario Fundación Alcorcón, Alcorcón, Madrid, España
| | - S García del Valle
- Departamento de Anestesiología y Reanimación, Hospital Universitario Fundación Alcorcón, Alcorcón, Madrid, España
| | - J A Rubio
- Unidad de Cardiología, Hospital Universitario Fundación Alcorcón, Alcorcón, Madrid, España
| | - E Esteban
- Unidad de Cardiología, Hospital Universitario Fundación Alcorcón, Alcorcón, Madrid, España
| | - E Pérez
- Research Institute, Hospital Universitario Fundación Alcorcón, Alcorcón, Madrid, España
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Jordana J, Ferrando A, Miró J, Goyache F, Loarca A, Martínez López OR, Canelón JL, Stemmer A, Aguirre L, Lara MAC, Álvarez LA, Llambí S, Gómez N, Gama LT, Nóvoa MF, Martínez RD, Pérez E, Sierra A, Contreras MA, Guastella AM, Marletta D, Arsenos G, Curik I, Landi V, Martínez A, Delgado JV. Genetic relationships among American donkey populations: insights into the process of colonization. J Anim Breed Genet 2015; 133:155-64. [PMID: 26364918 DOI: 10.1111/jbg.12180] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Accepted: 07/06/2015] [Indexed: 11/29/2022]
Abstract
This study presents the first insights into the genetic diversity and structure of the American donkey metapopulation. The primary objectives were to detect the main structural features underlying variability among American donkey populations, identify boundaries between differentiated gene pools, and draw the main colonization pathways since the introduction of donkeys into America in the 15th century. A panel of 14 microsatellite markers was applied for genotyping 350 American donkeys from 13 countries. The genetic structure of this metapopulation was analysed using descriptive statistics and Bayesian model-based methods. These populations were then compared to a database containing information on 476 individuals from 11 European breeds to identify the most likely ancestral donor populations. Results showed the presence of two distinct genetic pools, with confluence of the two in Colombia. The southern pool showed a unique genetic signature subsequent to an older founder event, but lacked any significant influence of modern gene flow from Europe. The northern pool, conversely, may have retained more ancestral polymorphisms and/or have experienced modern gene flow from Spanish breeds. The Andalusian and, to a lesser extent, the Catalan breeds have left a more pronounced footprint in some of the American donkey populations analysed.
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Affiliation(s)
- J Jordana
- Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - A Ferrando
- Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - J Miró
- Departament de Medicina i Cirurgia Animals, Facultat de Veterinària, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - F Goyache
- Área de Genética y Reproducción Animal, SERIDA-Deva, Gijón, Spain
| | - A Loarca
- Ministerio de Agricultura, Ganadería y Alimentación, Quetzaltenango, Guatemala
| | - O R Martínez López
- Dirección General de Investigación Científica y Tecnológica, Centro Multidisciplinario de Investigaciones Tecnológicas, Universidad Nacional de Asunción, Asunción, Paraguay
| | - J L Canelón
- Departamento de Producción e Industria Animal, Decanato de Ciencias Veterinarias, Universidad Centroccidental Lisandro Alvarado, Barquisimeto, Venezuela
| | - A Stemmer
- Facultad de Ciencias Agrícolas y Pecuarias, Universidad Mayor de San Simón, Cochabamba, Bolivia
| | - L Aguirre
- Centro Biotecnología Reproductiva Animal, Universidad Nacional de Loja, Loja, Ecuador
| | - M A C Lara
- Instituto de Zootecnia, Nova Odessa, SP, Brazil
| | - L A Álvarez
- Sede Palmira, Universidad Nacional de Colombia, Palmira, Valle del Cauca, Colombia
| | - S Llambí
- Instituto de Producción Animal, Área Genética, Facultad de Veterinaria, Universidad de la República (UdelaR), Montevideo, Uruguay
| | - N Gómez
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Micaela Bastidas de Apurímac, Abancay, Peru
| | - L T Gama
- Faculdade de Medicina Veterinária, Universidade Técnica de Lisboa, Lisboa, Portugal
| | - M F Nóvoa
- AEPGA Associação para o Estudo e Protecção do Gado Asinino, Atenor, Portugal
| | - R D Martínez
- Mejora y Conservación de Recursos Genéticos, Facultad de Ciencias Agrarias, Universidad Nacional de Lomas de Zamora, Llavallol, Argentina
| | - E Pérez
- Departamento de Salud y Explotación Animal, Universidad de Granma, Bayamo, Cuba
| | - A Sierra
- Posgrado e Investigación, Instituto Tecnológico de Conkal, Yucatán, Mexico
| | - M A Contreras
- Escuela de Medicina Veterinaria, UST Sede Santiago, Santiago, Chile
| | - A M Guastella
- Sezione di Scienze delle Produzioni Animali, Dipartimento di Agricoltura, Alimentazione e Ambiente, Università degli studi di Catania, Catania, Italy
| | - D Marletta
- Sezione di Scienze delle Produzioni Animali, Dipartimento di Agricoltura, Alimentazione e Ambiente, Università degli studi di Catania, Catania, Italy
| | - G Arsenos
- School of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - I Curik
- Department of Animal Science, Faculty of Agriculture, University of Zagreb, Zagreb, Croatia
| | - V Landi
- Departamento de Genética, Facultad de Veterinaria, Universidad de Córdoba, Córdoba, Spain
| | - A Martínez
- Departamento de Genética, Facultad de Veterinaria, Universidad de Córdoba, Córdoba, Spain
| | - J V Delgado
- Departamento de Genética, Facultad de Veterinaria, Universidad de Córdoba, Córdoba, Spain
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Balderas Altamirano M, Cordero S, López-Esparza R, Pérez E, Gama Goicochea A. Importance of pore length and geometry in the adsorption/desorption process: a molecular simulation study. Mol Phys 2015. [DOI: 10.1080/00268976.2015.1070927] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Pérez E, Lichtenstein MP, Suñol C, Casañ-Pastor N. Coatings of nanostructured pristine graphene-IrOx hybrids for neural electrodes: Layered stacking and the role of non-oxygenated graphene. Mater Sci Eng C Mater Biol Appl 2015; 55:218-26. [PMID: 26117758 DOI: 10.1016/j.msec.2015.05.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Revised: 04/16/2015] [Accepted: 05/02/2015] [Indexed: 12/14/2022]
Abstract
The need to enhance charge capacity in neural stimulation-electrodes is promoting the formation of new materials and coatings. Among all the possible types of graphene, pristine graphene prepared by graphite electrochemical exfoliation, is used in this work to form a new nanostructured IrOx-graphene hybrid (IrOx-eG). Graphene is stabilized in suspension by IrOx nanoparticles without surfactants. Anodic electrodeposition results in coatings with much smaller roughness than IrOx-graphene oxide. Exfoliated pristine graphene (eG), does not electrodeposit in absence of iridium, but IrOx-nanoparticle adhesion on graphene flakes drives the process. IrOx-eG has a significantly different electronic state than graphene oxide, and different coordination for carbon. Electron diffraction shows the reflection features expected for graphene. IrOx 1-2 nm cluster/nanoparticles are oxohydroxo-species and adhere to 10nm graphene platelets. eG induces charge storage capacity values five times larger than in pure IrOx, and if calculated per carbon atom, this enhancement is one order magnitude larger than the induced by graphene oxide. IrOx-eG coatings show optimal in vitro neural cell viability and function as cell culture substrates. The fully straightforward electrochemical exfoliation and electrodeposition constitutes a step towards the application of graphene in biomedical systems, expanding the knowledge of pristine graphene vs. graphene oxide, in bioelectrodes.
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Affiliation(s)
- E Pérez
- Institut Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, E-08193, Bellaterra, Barcelona, Spain
| | - M P Lichtenstein
- Institut d'Investigacions Biomèdiques de Barcelona (IIBB-CSIC), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), c/Rosselló 161, 08036 Barcelona, Spain
| | - C Suñol
- Institut d'Investigacions Biomèdiques de Barcelona (IIBB-CSIC), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), c/Rosselló 161, 08036 Barcelona, Spain
| | - N Casañ-Pastor
- Institut Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, E-08193, Bellaterra, Barcelona, Spain.
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Lara C, Ruano M, Villamañán E, Pérez E, Balade L, Herrero A. PS-007 Survey on the use of vials and pens as insulin delivery devices in hospitalisation units. Eur J Hosp Pharm 2015. [DOI: 10.1136/ejhpharm-2015-000639.334] [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: 11/04/2022] Open
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