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Blanch AR, Méndez J, Lucena F, Casas-Mangas R, Chesa-Marro MJ, Llopart-Mascaró A, Jofre J. Somatic Coliphages as an Operational Tool to Assess Loss of Bathing Water Quality after Heavy Rain Events. Water Res 2024; 249:120981. [PMID: 38091698 DOI: 10.1016/j.watres.2023.120981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 11/21/2023] [Accepted: 12/05/2023] [Indexed: 01/03/2024]
Abstract
Rapid population growth and coastal development has led to increased fecal contamination of coastal surface waters worldwide, enhancing the potential risk of waterborne human pathogens in bathing areas. More frequent heavy rainfall events, attributed to global warming, have further exacerbated the problem by causing sometimes sewer overflows into recreational waters. As traditional bacterial indicators have limited accuracy for predicting health risks associated with waterborne viruses, the additional use of viral indicators such as coliphages is recommended. In this study, we compared the behavior of bacterial and viral indicators of water quality at 10 Barcelona beaches during three bathing seasons, in dry conditions, and after four rainstorms that caused specific pollution events due to rain runoff with combined sewer overflows (CSO). Levels of all target indicators increased after the rainstorms, but compared to Escherichia coli and intestinal enterococci, somatic coliphages exhibited a slower decline and higher environmental persistence following a rain event. Daily continuous sampling carried out during the days following a rainstorm allowed not only the determination of the decay kinetics of each target indicator but also the day when the water quality recovered the values established in the current European regulation in approximately 2 -3 days after each CSO. These observations indicate that the combined use of bacterial and viral indicators can enhance the surveillance of microbial quality of bathing waters. Moreover, coliphages can swiftly provide insights into transient fecal pollution linked to rainfall episodes, thanks to available analytical techniques that enable same-day recommendations. The management of urban wastewater and recreational water regulations should consistently employ microbial indicators to address rainwater runoff or sewer overflows resulting from heavy rainfall.
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Affiliation(s)
- A R Blanch
- Departament de Genètica, Microbiologia i Estadística, Facultat de Biologia, Universitat de Barcelona (UB), Barcelona, Spain; Institut de Recerca de l'Aigua (IdRA), Universitat de Barcelona (UB), Barcelona, Spain.
| | - J Méndez
- Departament de Genètica, Microbiologia i Estadística, Facultat de Biologia, Universitat de Barcelona (UB), Barcelona, Spain
| | - F Lucena
- Departament de Genètica, Microbiologia i Estadística, Facultat de Biologia, Universitat de Barcelona (UB), Barcelona, Spain; Institut de Recerca de l'Aigua (IdRA), Universitat de Barcelona (UB), Barcelona, Spain
| | - R Casas-Mangas
- Departament de Genètica, Microbiologia i Estadística, Facultat de Biologia, Universitat de Barcelona (UB), Barcelona, Spain
| | - M J Chesa-Marro
- Barcelona Cicle de l'Aigua, S.A. (BCASA). Ajuntament de Barcelona. Barcelona. Spain
| | - A Llopart-Mascaró
- Barcelona Cicle de l'Aigua, S.A. (BCASA). Ajuntament de Barcelona. Barcelona. Spain
| | - J Jofre
- Departament de Genètica, Microbiologia i Estadística, Facultat de Biologia, Universitat de Barcelona (UB), Barcelona, Spain; Reial Acadèmia de Ciències i Arts de Barcelona, Barcelona, Spain
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Tapia G, González M, Burgos J, Vega MV, Méndez J, Inostroza L. Early transcriptional responses in Solanum peruvianum and Solanum lycopersicum account for different acclimation processes during water scarcity events. Sci Rep 2021; 11:15961. [PMID: 34354211 PMCID: PMC8342453 DOI: 10.1038/s41598-021-95622-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 07/27/2021] [Indexed: 12/13/2022] Open
Abstract
Cultivated tomato Solanum lycopersicum (Slyc) is sensitive to water shortages, while its wild relative Solanum peruvianum L. (Sper), an herbaceous perennial small shrub, can grow under water scarcity and soil salinity environments. Plastic Sper modifies the plant architecture when suffering from drought, which is mediated by the replacement of leaf organs, among other changes. The early events that trigger acclimation and improve these morphological traits are unknown. In this study, a physiological and transcriptomic approach was used to understand the processes that differentiate the response in Slyc and Sper in the context of acclimation to stress and future consequences for plant architecture. In this regard, moderate (MD) and severe drought (SD) were imposed, mediating PEG treatments. The results showed a reduction in water and osmotic potential during stress, which correlated with the upregulation of sugar and proline metabolism-related genes. Additionally, the senescence-related genes FTSH6 protease and asparagine synthase were highly induced in both species. However, GO categories such as "protein ubiquitination" or "endopeptidase inhibitor activity" were differentially enriched in Sper and Slyc, respectively. Genes related to polyamine biosynthesis were induced, while several cyclins and kinetin were downregulated in Sper under drought treatments. Repression of photosynthesis-related genes was correlated with a higher reduction in the electron transport rate in Slyc than in Sper. Additionally, transcription factors from the ERF, WRKY and NAC families were commonly induced in Sper. Although some similar responses were induced in both species under drought stress, many important changes were detected to be differentially induced. This suggests that different pathways dictate the strategies to address the early response to drought and the consequent episodes in the acclimation process in both tomato species.
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Affiliation(s)
- G Tapia
- Unidad de Recursos Genéticos Vegetales, Instituto de Investigaciones Agropecuarias, INIA-Quilamapu, Avenida Vicente Mendez 515, Chillán, Chile.
| | - M González
- Laboratorio de Microbiología Aplicada, Centro de Estudios Avanzados en Zonas Áridas (CEAZA), Raúl Bitrán 1305, La Serena, Chile
| | - J Burgos
- Unidad de Recursos Genéticos Vegetales, Instituto de Investigaciones Agropecuarias, INIA-Quilamapu, Avenida Vicente Mendez 515, Chillán, Chile
| | - M V Vega
- Unidad de Recursos Genéticos Vegetales, Instituto de Investigaciones Agropecuarias, INIA-Quilamapu, Avenida Vicente Mendez 515, Chillán, Chile
| | - J Méndez
- Unidad de Recursos Genéticos Vegetales, Instituto de Investigaciones Agropecuarias, INIA-Quilamapu, Avenida Vicente Mendez 515, Chillán, Chile
| | - L Inostroza
- Unidad de Recursos Genéticos Vegetales, Instituto de Investigaciones Agropecuarias, INIA-Quilamapu, Avenida Vicente Mendez 515, Chillán, Chile
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Bala M, Saucedo M, Bandeo L, Chertcoff A, Uribe-Roca C, Bonardo P, Fernández-Pardal M, Miquelini L, Méndez J, Reisin R. [Trident sign in spinal cord neurosarcoidosis]. Rev Neurol 2021; 70:193-194. [PMID: 32100280 DOI: 10.33588/rn.7005.2019180] [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: 11/24/2022]
Affiliation(s)
- M Bala
- Hospital Británico de Buenos Aires, Buenos Aires, Argentina
| | - M Saucedo
- Hospital Británico de Buenos Aires, Buenos Aires, Argentina
| | - L Bandeo
- Hospital Británico de Buenos Aires, Buenos Aires, Argentina
| | - A Chertcoff
- Hospital Británico de Buenos Aires, Buenos Aires, Argentina
| | - C Uribe-Roca
- Hospital Británico de Buenos Aires, Buenos Aires, Argentina
| | - P Bonardo
- Hospital Británico de Buenos Aires, Buenos Aires, Argentina
| | | | - L Miquelini
- Hospital Británico de Buenos Aires, Buenos Aires, Argentina
| | - J Méndez
- Hospital Británico de Buenos Aires, Buenos Aires, Argentina
| | - R Reisin
- Hospital Británico de Buenos Aires, Buenos Aires, Argentina
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Natera-Villalba E, Cruz-Culebras A, García-Madrona S, Vera-Lechuga R, de Felipe-Mimbrera A, Matute-Lozano C, Gómez-López A, Ros-Castelló V, Sánchez-Sánchez A, Martínez-Poles J, Nedkova-Hristova V, Escribano-Paredes JB, García-Bermúdez I, Méndez J, Fandiño E, Masjuan J. Mechanical thrombectomy beyond 6 hours in acute ischaemic stroke with large vessel occlusion in the carotid artery territory: experience at a tertiary hospital. Neurología (English Edition) 2021; 38:236-245. [PMID: 34092537 DOI: 10.1016/j.nrleng.2020.08.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 08/04/2020] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Thrombectomy in the carotid artery territory was recently shown to be effective up to 24 hours after symptoms onset. METHODS We conducted a retrospective review of a prospective registry of patients treated at our stroke reference centre between November 2016 and April 2019 in order to assess the safety and effectiveness of mechanical thrombectomy performed beyond 6 hours after symptoms onset in patients with acute ischaemic stroke and large vessel occlusion in the carotid artery territory. RESULTS Data were gathered from 59 patients (55.9% women; median age, 71 years). In 33 cases, stroke was detected upon awakening; 57.6% of patients were transferred from another hospital. Median baseline NIHSS score was 16, and median ASPECTS score was 8, with 94.9% of patients presenting > 50% of salvageable tissue. Satisfactory recanalisation was achieved in 88.1% of patients, beyond 24 hours after onset in 5 cases. At 90 days of follow-up, 67.8% were functionally independent; those who were not were older and presented higher prevalence of atrial fibrillation, greater puncture-to-recanalisation time, and higher NIHSS scores, both at baseline and at discharge. CONCLUSION In our experience, mechanical thrombectomy beyond 6 hours was associated with good 90-day functional outcomes. Age, NIHSS score, puncture-to-recanalisation time, and presence of atrial fibrillation affected functional prognosis. The efficacy of the treatment beyond 24 hours after onset merits study.
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Affiliation(s)
- E Natera-Villalba
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, Spain.
| | - A Cruz-Culebras
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - S García-Madrona
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - R Vera-Lechuga
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - A de Felipe-Mimbrera
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - C Matute-Lozano
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - A Gómez-López
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - V Ros-Castelló
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - A Sánchez-Sánchez
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - J Martínez-Poles
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - V Nedkova-Hristova
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - J B Escribano-Paredes
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - I García-Bermúdez
- Servicio de Radiología, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - J Méndez
- Servicio de Radiología, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - E Fandiño
- Servicio de Radiología, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - J Masjuan
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, Spain; Servicio de Neurología, Hospital Ramón y Cajal, Departamento de Medicina, Facultad de Medicina, Universidad de Alcalá, IRYCIS, Madrid, Spain
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5
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Natera-Villalba E, Cruz-Culebras A, García-Madrona S, Vera-Lechuga R, de Felipe-Mimbrera A, Matute-Lozano C, Gómez-López A, Ros-Castelló V, Sánchez-Sánchez A, Martínez-Poles J, Nedkova-Hristova V, Escribano-Paredes JB, García-Bermúdez I, Méndez J, Fandiño E, Masjuan J. Mechanical thrombectomy beyond 6hours in acute ischaemic stroke with large vessel occlusion in the carotid artery territory: Experience at a tertiary hospital. Neurologia 2021; 38:S0213-4853(20)30298-X. [PMID: 33551125 DOI: 10.1016/j.nrl.2020.08.019] [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: 02/04/2020] [Revised: 07/06/2020] [Accepted: 08/04/2020] [Indexed: 11/29/2022] Open
Abstract
INTRODUCTION Thrombectomy in the carotid artery territory was recently shown to be effective up to 24hours after symptoms onset. METHODS We conducted a retrospective review of a prospective registry of patients treated at our stroke reference centre between November 2016 and April 2019 in order to assess the safety and effectiveness of mechanical thrombectomy performed beyond 6hours after symptoms onset in patients with acute ischaemic stroke and large vessel occlusion in the carotid artery territory. RESULTS Data were gathered from 59 patients (55.9% women; median age, 71 years). In 33 cases, stroke was detected upon awakening; 57.6% of patients were transferred from another hospital. Median baseline NIHSS score was 16, and median ASPECTS score was 8, with 94.9% of patients presenting>50% of salvageable tissue. Satisfactory recanalisation was achieved in 88.1% of patients, beyond 24hours after onset in 5 cases. At 90 days of follow-up, 67.8% were functionally independent; those who were not were older and presented higher prevalence of atrial fibrillation, greater puncture-to-recanalisation time, and higher NIHSS scores, both at baseline and at discharge. CONCLUSION In our experience, mechanical thrombectomy beyond 6hours was associated with good 90-day functional outcomes. Age, NIHSS score, puncture-to-recanalisation time, and presence of atrial fibrillation affected functional prognosis. The efficacy of the treatment beyond 24hours after onset merits study.
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Affiliation(s)
- E Natera-Villalba
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, España.
| | - A Cruz-Culebras
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, España
| | - S García-Madrona
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, España
| | - R Vera-Lechuga
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, España
| | - A de Felipe-Mimbrera
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, España
| | - C Matute-Lozano
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, España
| | - A Gómez-López
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, España
| | - V Ros-Castelló
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, España
| | - A Sánchez-Sánchez
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, España
| | - J Martínez-Poles
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, España
| | - V Nedkova-Hristova
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, España
| | - J B Escribano-Paredes
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, España
| | - I García-Bermúdez
- Servicio de Radiología, Hospital Universitario Ramón y Cajal, Madrid, España
| | - J Méndez
- Servicio de Radiología, Hospital Universitario Ramón y Cajal, Madrid, España
| | - E Fandiño
- Servicio de Radiología, Hospital Universitario Ramón y Cajal, Madrid, España
| | - J Masjuan
- Servicio de Neurología, Unidad de Ictus, Hospital Universitario Ramón y Cajal, Madrid, España; Servicio de Neurología, Hospital Ramón y Cajal, Departamento de Medicina, Facultad de Medicina, Universidad de Alcalá, IRYCIS, Madrid, España
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Stantonyonge N, Sampedro F, Méndez J, Martínez-Horta S, Chico A, Gómez-Anson B. Structural Gray and White Matter Differences in Patients With Type 1 Diabetes and Impaired Awareness of Hypoglycemia. J Clin Endocrinol Metab 2021; 106:450-458. [PMID: 33180907 DOI: 10.1210/clinem/dgaa832] [Citation(s) in RCA: 3] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Indexed: 11/19/2022]
Abstract
CONTEXT Type 1 diabetes (T1D) is associated with an increased risk of cognitive decline, where severe hypoglycemia (SH) and impaired awareness of hypoglycemia (IAH) may play a role. While there is evidence of a possible association between IAH and brain damage, the potential brain changes remain poorly characterized by magnetic resonance imaging (MRI). OBJECTIVE To investigate whether there are structural brain differences in a group of T1D patients with IAH compared with normal awareness of hypoglycemia (NAH). DESIGN General practice, population-based, cross-sectional study (July 2018 to July 2019). SETTING Endocrinology Department, Hospital Santa Creu i Sant Pau. PARTICIPANTS A total of 40 T1D patients (20 each with IAH and NAH) matched for age, sex, T1D duration, and education level. MAIN OUTCOME MEASURES Using different neuroimaging techniques, we compared whole-brain gray matter (GM) and white matter (WM) differences. We used voxel-based morphometry and cortical surface area analysis methods to assess GM differences, and fractional anisotropy (FA) to assess WM differences. RESULTS Compared with patients with T1D-NAH, patients with T1D-IAH had reduced GM volumes and cortical surface areas, especially in frontal and parietal regions (P < 0.05 corrected), and also showed reduced FA values in major WM tracts. The observed MRI differences correlated with both SH frequency and IAH severity. CONCLUSIONS MRI for patients with T1D show that IAH is associated with brain changes involving both GM and WM. Further research is needed to elucidate whether the observed differences are a consequence of increased SH episode frequency and increased IAH severity.
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Affiliation(s)
- Nicole Stantonyonge
- Department of Endocrinology and Nutrition, Hospital de Santa Creu i Sant Pau, Barcelona, Spain
- Department of Medicine, Autonomous University of Barcelona, Barcelona, Spain
| | - Frederic Sampedro
- Institut d'Investigacions Biomèdiques Sant Pau (IIB-Sant Pau), Barcelona, Spain
- CIBER-Neurodegenerative Diseases (CIBER-NED), Madrid, Spain
- Department of Neurology, Movement Disorders Unit, Hospital de Santa Creu i Sant Pau, Barcelona, Spain
| | - Jorge Méndez
- Neuroradiology, Radiology Department, Hospital de la Santa Creu i Sant Pau, Autonomous University of Barcelona, Barcelona, Spain
| | - Saül Martínez-Horta
- Institut d'Investigacions Biomèdiques Sant Pau (IIB-Sant Pau), Barcelona, Spain
- CIBER-Neurodegenerative Diseases (CIBER-NED), Madrid, Spain
- Department of Neurology, Movement Disorders Unit, Hospital de Santa Creu i Sant Pau, Barcelona, Spain
| | - Ana Chico
- Department of Endocrinology and Nutrition, Hospital de Santa Creu i Sant Pau, Barcelona, Spain
- Department of Medicine, Autonomous University of Barcelona, Barcelona, Spain
- CIBER-Bioengineering, Biomaterials and Nanotechnology (CIBER-BBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Beatriz Gómez-Anson
- Neuroradiology, Radiology Department, Hospital de la Santa Creu i Sant Pau, Autonomous University of Barcelona, Barcelona, Spain
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Sarmento-Castro R, Méndez J, Horta A, Gonçalves C, Vasconcelos O, Seabra J, Abreu M, Gonçalves MJ, Santos MJ, Tavares AP. Hepatitis C treatment outcome in former or current intravenous drug users coinfected with HIV, with or without directly observed therapy. Infect Dis (Lond) 2020; 53:9-18. [PMID: 32820689 DOI: 10.1080/23744235.2020.1806352] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
BACKGROUND Intravenous drug users (IDUs) with hepatitis C virus (HCV)/human immunodeficiency virus (HIV)-coinfection are recognised as a high-risk, vulnerable group. METHODS Between February 2015 and April 2018, a single-centre, non-interventional cohort study was conducted in an outpatient setting, to evaluate the sustained virologic response (SVR12) and assess treatment uptake models. The study included 385 former or recent IDUs divided into two groups: A-without use of opioid substitution treatment (OST) and B-patients taking opioid substitution; patients in group B received OST and self-administered therapy (B1) or OST and therapy under DOT (B2). Patients were characterised by demographic and clinical features and compared for treatment response. Correlations between SVR12 and independent variables were determined by logistic regression. RESULTS Patients were mostly males (88.3%) with a mean age of 46 ± 5 years and HCV genotype 1a (63.7%). Approximately 28% were treatment-experienced and 84.9% received sofosbuvir/ledipasvir. The mean CD4+T count was 649 cells/mm3, and most individuals were on antiretroviral therapy with undetectable viral loads (97.4%). SVR12 was achieved in 94.8%, and only eight patients relapsed. No significant differences were found in treatment effect between individuals taking opioid substitutes under different treatment models. Correlations were found between HCV viral response and both HIV suppression and albumin levels. CONCLUSIONS IDU with HCV/HIV coinfection, including individuals on self-administration of HCV therapy and opioid substitution treatments or in DOT programmes, are no longer considered a difficult-to-treat group, as they achieve high rates of SVR12.
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Affiliation(s)
- R Sarmento-Castro
- Serviço de Doenças Infeciosas, Centro Hospitalar Universitário do Porto - Largo Prof. Abel Salazar, Porto, Portugal
| | - J Méndez
- Serviço de Doenças Infeciosas, Centro Hospitalar Universitário do Porto - Largo Prof. Abel Salazar, Porto, Portugal
| | - A Horta
- Serviço de Doenças Infeciosas, Centro Hospitalar Universitário do Porto - Largo Prof. Abel Salazar, Porto, Portugal
| | - C Gonçalves
- Serviço de Doenças Infeciosas, Centro Hospitalar Universitário do Porto - Largo Prof. Abel Salazar, Porto, Portugal
| | - O Vasconcelos
- Serviço de Doenças Infeciosas, Centro Hospitalar Universitário do Porto - Largo Prof. Abel Salazar, Porto, Portugal
| | - J Seabra
- Serviço de Doenças Infeciosas, Centro Hospitalar Universitário do Porto - Largo Prof. Abel Salazar, Porto, Portugal
| | - M Abreu
- Serviço de Doenças Infeciosas, Centro Hospitalar Universitário do Porto - Largo Prof. Abel Salazar, Porto, Portugal
| | - M J Gonçalves
- Serviço de Doenças Infeciosas, Centro Hospitalar Universitário do Porto - Largo Prof. Abel Salazar, Porto, Portugal
| | - M J Santos
- Serviço de Doenças Infeciosas, Centro Hospitalar Universitário do Porto - Largo Prof. Abel Salazar, Porto, Portugal.,ARSN - Administração Regional De Saúde Do Norte I.P, Porto, Portugal
| | - A P Tavares
- Serviço de Doenças Infeciosas, Centro Hospitalar Universitário do Porto - Largo Prof. Abel Salazar, Porto, Portugal
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Gracenea M, Castaño S, Méndez J, Lucena F, Gómez MS. Faecal contamination in public pools in Barcelona province: Cryptosporidium spp. and bacterial indicators. J Water Health 2018; 16:762-772. [PMID: 30285957 DOI: 10.2166/wh.2018.267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A study was conducted of the occurrence of Cryptosporidium in indoor heated public swimming pools and of three bacterial indicators (Escherichia coli, faecal enterococci and Clostridium perfringens) on pool surrounds. Although all examined pools adhered strictly to the Spanish regulations, the influence of several parameters related to water conditions, pool structure, users and location on the presence of protozoa and bacteria was analysed. Cryptosporidium was detected in 18.8% of pools in 60% of the five towns studied. The maximum concentration was 13 oocysts/L in one swimming pool and one Jacuzzi. The bacterial indicators' prevalence on pool surrounds was higher than 50%, being present in all of the towns. Plastic surfaces presented the lowest bacterial prevalence, whereas painted surfaces were 100% positive. No differences were observed for pool surrounds with autonomous or disabled users. Risk of cryptosporidiosis in pool vessels indicated that concentrations over 1 oocyst/10 L enhance the risk of infection, even in one exposure. Guidelines for managing faecal accidents and public information on the importance of good hygiene behaviours in and around swimming pools are recommended to limit oocysts' presence.
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Affiliation(s)
- M Gracenea
- Section of Parasitology, Department of Biology, Healthcare and the Environment, Faculty of Pharmacy and Food Sciences, University of Barcelona, Av. Joan XXIII s/n, Barcelona, Spain
| | - S Castaño
- Section of Parasitology, Department of Biology, Healthcare and the Environment, Faculty of Pharmacy and Food Sciences, University of Barcelona, Av. Joan XXIII s/n, Barcelona, Spain
| | - J Méndez
- Section of Microbiology, Department of Genetics, Microbiology and Statistics, Faculty of Biology, University of Barcelona, Av. Diagonal 643, Barcelona, Spain E-mail:
| | - F Lucena
- Section of Microbiology, Department of Genetics, Microbiology and Statistics, Faculty of Biology, University of Barcelona, Av. Diagonal 643, Barcelona, Spain E-mail:
| | - M S Gómez
- Section of Parasitology, Department of Biology, Healthcare and the Environment, Faculty of Pharmacy and Food Sciences, University of Barcelona, Av. Joan XXIII s/n, Barcelona, Spain
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Van Limbergen T, Dewulf J, Klinkenberg M, Ducatelle R, Gelaude P, Méndez J, Heinola K, Papasolomontos S, Szeleszczuk P, Maes D. Scoring biosecurity in European conventional broiler production. Poult Sci 2018; 97:74-83. [PMID: 29077940 DOI: 10.3382/ps/pex296] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Accepted: 09/19/2017] [Indexed: 11/20/2022] Open
Abstract
Good biosecurity procedures are crucial for healthy animal production. The aim of this study was to quantify the level of biosecurity on conventional broiler farms in Europe, following a standardized procedure, thereby trying to identify factors that are amenable to improvement. The current study used a risk-based weighted scoring system (biocheck.ugent ®) to assess the level of biosecurity on 399 conventional broiler farms in 5 EU member states. The scoring system consisted of 2 main categories, namely external and internal biosecurity, which had 8 and 3 subcategories, respectively. Biosecurity was quantified by converting the answers to 97 questions into a score from 0 to 100. The minimum score, "0," represents total absence of any biosecurity measure on the broiler farm, whereas the maximum score, "100," means full application of all investigated biosecurity measures. A possible correlation between biosecurity and farm characteristics was investigated by multivariate linear regression analysis. The participating broiler farms scored better for internal biosecurity (mean score of 76.6) than for external biosecurity (mean 68.4). There was variation between the mean biosecurity scores for the different member states, ranging from 59.8 to 78.0 for external biosecurity and from 63.0 to 85.6 for internal biosecurity. Within the category of external biosecurity, the subcategory related to "infrastructure and vectors" had the highest mean score (82.4), while the subcategory with the lowest score related to biosecurity procedures for "visitors and staff" (mean 51.5). Within the category of internal biosecurity, the subcategory "disease management" had the highest mean score (65.8). In the multivariate regression model a significant negative correlation was found between internal biosecurity and the number of employees and farm size. These findings indicate that there is a lot of variation for external and internal biosecurity on the participating broiler farms, suggesting that improvements are possible. Since the subcategory "visitors and staff" scored the lowest, better education of broiler farmers and their staff may help to improve overall biosecurity on broiler farms in Europe.
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Affiliation(s)
- T Van Limbergen
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - J Dewulf
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - M Klinkenberg
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - R Ducatelle
- Department of Pathology, Bacteriology and Poultry Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - P Gelaude
- Animal Health Care Flanders, Industrielaan 29, 8820 Torhout
| | - J Méndez
- COREN, Santa Cruz de Arrabaldo, s/n, 32990 Ourense, Spain
| | - K Heinola
- Natural Resources Institute Finland (Luke), Kampusranta 9, FI-60320 Seinäjoki, Finland
| | - S Papasolomontos
- Vitatrace Nutrition Ltd., Propylaion 18, Strovolos Industrial Estate, 2033 Nicosia, Cyprus
| | - P Szeleszczuk
- Department of Pathology and Veterinary Diagnostics, Division of Avian Diseases, Warsaw University of Life Sciences (SGGW), Nowoursynowska 166, 02-787 Warszawa, Poland
| | - D Maes
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
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Álvarez-Ossorio MJ, Sarmento E Castro R, Granados R, Macías J, Morano-Amado LE, Ríos MJ, Merino D, Álvarez EN, Collado A, Pérez-Pérez M, Téllez F, Martín JM, Méndez J, Pineda JA, Neukam K. Impact of interferon-free regimens on the glomerular filtration rate during treatment of chronic hepatitis C in a real-life cohort. J Viral Hepat 2018; 25:699-706. [PMID: 29377515 DOI: 10.1111/jvh.12867] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 12/20/2017] [Indexed: 01/09/2023]
Abstract
Little data are available on renal toxicity exerted by direct-acting antivirals (DAAs) in real life. The aim of this study was to assess the impact of direct-acting antivirals against hepatitis C virus infection currently used in Spain and Portugal on the estimated glomerular filtration rate (eGFR) in clinical practise. From an international, prospective multicohort study, patients treated with DAAs for at least 12 weeks and with eGFR ≥30 mL/min per 1.73 m2 at baseline were selected. eGFR was determined using the CKD-EPI formula. A total of 1131 patients were included; 658 (58%) were HIV/HCV-coinfected patients. Among the 901 patients treated for 12 weeks, median (interquartile range) eGFR was 100 (87-107) at baseline vs 97 (85-105) mL/min per 1.73 m2 at week 12 of follow-up (FU12) post-treatment (P < .001). For HIV-coinfected subjects who received tenofovir plus a ritonavir-boosted HIV protease inhibitor (PI/r), baseline vs FU12 eGFR were 104 (86-109) vs 104 (91-110) mL/min per 1.73 m2 (P = .913). Among subjects receiving ombitasvir/paritaprevir with or without dasabuvir, eGFR did not show any significant change. Of 1100 subjects with eGFR >60 mL/min per 1.73 m2 at baseline, 22 (2%) had eGFR <60 mL/min per 1.73 m2 at FU12, but none presented with eGFR <30 mL/min per 1.73 m2 . In conclusion, eGFR slightly declines during therapy with all-oral DAAs and this effect persists up to 12 weeks after stopping treatment in subjects with normal to moderately impaired renal function, regardless of HIV status. Concomitant use of tenofovir plus PI/r does not seem to have an impact on eGFR.
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Affiliation(s)
- M J Álvarez-Ossorio
- Unit of Infectious Diseases and Microbiology, Hospital Universitario de Valme, Seville, Spain
| | | | - R Granados
- Unit of Infectious Diseases, Hospital Universitario de Gran Canaria Dr Negrín, Las Palmas de Gran Canaria, Spain
| | - J Macías
- Unit of Infectious Diseases and Microbiology, Hospital Universitario de Valme, Seville, Spain
| | - L E Morano-Amado
- Unit of Infectious Pathology, Hospital Universitario Alvaro Cunqueiro, Vigo, Spain
| | - M J Ríos
- Unit of Infectious Diseases, Hospital Universitario Virgen Macarena, Seville, Spain
| | - D Merino
- Unit of Infectious Diseases, Complejo Hospitalario Universitario de Huelva, Huelva, Spain
| | - E N Álvarez
- Infectious Diseases Unit, Hospital Universitario Virgen de la Victoria, Malaga, Spain
| | - A Collado
- Infectious Diseases Unit, Hospital Universitario Torrecárdenas, Almeria, Spain
| | - M Pérez-Pérez
- Unit of Infectious Diseases, Hospital La Línea, AGS Campo de Gibraltar, Cadiz, Spain
| | - F Téllez
- Unit of Infectious Diseases and Microbiology, Hospital Universitario de Puerto Real, Instituto de Investigación e Innovación en Ciencias Biomédicas de la Provincia de Cádiz (INiBICA), Puerto Real, Spain
| | - J M Martín
- Unit of Infectious Diseases, Hospital Universitario de Gran Canaria Dr Negrín, Las Palmas de Gran Canaria, Spain
| | - J Méndez
- Unit of Infectious Diseases, Centro Hospitalar do Porto, Porto, Portugal
| | - J A Pineda
- Unit of Infectious Diseases and Microbiology, Hospital Universitario de Valme, Seville, Spain
| | - K Neukam
- Unit of Infectious Diseases and Microbiology, Hospital Universitario de Valme, Seville, Spain.,Instituto de Biomedicina de Sevilla (IBiS), Seville, Spain
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11
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Prego-Faraldo MV, Vieira LR, Eirin-Lopez JM, Méndez J, Guilhermino L. Transcriptional and biochemical analysis of antioxidant enzymes in the mussel Mytilus galloprovincialis during experimental exposures to the toxic dinoflagellate Prorocentrum lima. Mar Environ Res 2017; 129:304-315. [PMID: 28673426 DOI: 10.1016/j.marenvres.2017.06.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [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: 01/07/2017] [Revised: 06/09/2017] [Accepted: 06/14/2017] [Indexed: 06/07/2023]
Abstract
The genotoxic and cytotoxic effects of Diarrhetic Shellfish Poisoning (DSP) toxins have been widely investigated in bivalve molluscs, representing the main vectors of these compounds in the Atlantic coast of Europe. DSP toxins are produced by Harmful Algal Blooms (HABs) of Dinophysis and Prorocentrum dinoflagellates, being subsequently accumulated by marine organisms and biomagnified throughout trophic webs. Yet, bivalves display increased resistance to the harmful effects of these toxins during HAB episodes. While previous reports have suggested that such resilience might be the result of an increased activity in the bivalve antioxidant system, very little is still known about the specific mechanism underlying the protective effect observed in these organisms. The present work aims to fill this gap by studying transcriptional expression levels and biochemical activities of antioxidant enzymes in different tissues the mussel Mytilus galloprovincialis during experimental exposures to DSP toxins produced by the dinoflagellate Prorocentrum lima. Results are consistent with the presence of a compensatory mechanism involving a down-regulation in the expression of specific genes encoding antioxidant enzymes [i.e., SuperOxide Dismutase (SOD) and CATalase (CAT)] which is counterbalanced by the up-regulation of other antioxidant genes such as Glutathione S-Transferase pi-1 (GST-pi) and Selenium-dependent Glutathione PeroXidase (Se-GPx), respectively. Enzymatic activity analyses mirror gene expression results, revealing high antioxidant activity levels (consistent with a protective role for the antioxidant system) along with reduced lipid peroxidation (increasing the defense against oxidative stress).
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Affiliation(s)
- M V Prego-Faraldo
- CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, Research Group of Ecotoxicology, Stress Ecology and Environmental Health, University of Porto, Porto, Portugal; XENOMAR Group, Department of Cellular and Molecular Biology, University of A Coruña, A Coruña, Spain; Environmental Epigenetics Group, Department of Biological Sciences, Florida International University, Miami, FL, USA.
| | - L R Vieira
- ICBAS - Institute of Biomedical Sciences of Abel Salazar, Department of Populations Study, Laboratory of Ecotoxicology, University of Porto, Porto, Portugal; CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, Research Group of Ecotoxicology, Stress Ecology and Environmental Health, University of Porto, Porto, Portugal
| | - J M Eirin-Lopez
- Environmental Epigenetics Group, Department of Biological Sciences, Florida International University, Miami, FL, USA
| | - J Méndez
- XENOMAR Group, Department of Cellular and Molecular Biology, University of A Coruña, A Coruña, Spain
| | - L Guilhermino
- ICBAS - Institute of Biomedical Sciences of Abel Salazar, Department of Populations Study, Laboratory of Ecotoxicology, University of Porto, Porto, Portugal; CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, Research Group of Ecotoxicology, Stress Ecology and Environmental Health, University of Porto, Porto, Portugal
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12
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Camps-Renom P, Méndez J, Granell E, Casoni F, Prats-Sánchez L, Martínez-Domeño A, Guisado-Alonso D, Martí-Fàbregas J, Delgado-Mederos R. Transcranial Duplex Sonography Predicts Outcome following an Intracerebral Hemorrhage. AJNR Am J Neuroradiol 2017; 38:1543-1549. [PMID: 28619839 DOI: 10.3174/ajnr.a5248] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Accepted: 03/27/2017] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Several radiologic features such as hematoma volume are related to poor outcome following an intracerebral hemorrhage and can be measured with transcranial duplex sonography. We sought to determine the prognostic value of transcranial duplex sonography in patients with intracerebral hemorrhage. MATERIALS AND METHODS We conducted a prospective study of patients diagnosed with spontaneous intracerebral hemorrhage. Transcranial duplex sonography examinations were performed within 2 hours of baseline CT, and we recorded the following variables: hematoma volume, midline shift, third ventricle and lateral ventricle diameters, and the pulsatility index in both MCAs. We correlated these data with the CT scans and assessed the prognostic value of the transcranial duplex sonography measurements. We assessed early neurologic deterioration during hospitalization and mortality at 1-month follow-up. RESULTS We included 35 patients with a mean age of 72.2 ± 12.8 years. Median baseline hematoma volume was 9.85 mL (interquartile range, 2.74-68.29 mL). We found good agreement and excellent correlation between transcranial duplex sonography and CT when measuring hematoma volume (r = 0.791; P < .001) and midline shift (r = 0.827; P < .001). The logistic regression analysis with transcranial duplex sonography measurements showed that hematoma volume was an independent predictor of early neurologic deterioration (OR, 1.078; 95% CI, 1.023-1.135) and mortality (OR, 1.089; 95% CI, 1.020-1.160). A second regression analysis with CT variables also demonstrated that hematoma volume was associated with early neurologic deterioration and mortality. When we compared the rating operation curves of both models, their predictive power was similar. CONCLUSIONS Transcranial duplex sonography showed an excellent correlation with CT in assessing hematoma volume and midline shift in patients with intracerebral hemorrhage. Hematoma volume measured with transcranial duplex sonography was an independent predictor of poor outcome.
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Affiliation(s)
- P Camps-Renom
- From the Departments of Neurology (P.C.-R., F.C., L.P.-S., A.M.-D., D.G.-A., J.M.-F., R.D.-M.)
| | - J Méndez
- Radiology (J.M., E.G.), Biomedical Research Institute Sant Pau, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - E Granell
- Radiology (J.M., E.G.), Biomedical Research Institute Sant Pau, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - F Casoni
- From the Departments of Neurology (P.C.-R., F.C., L.P.-S., A.M.-D., D.G.-A., J.M.-F., R.D.-M.)
| | - L Prats-Sánchez
- From the Departments of Neurology (P.C.-R., F.C., L.P.-S., A.M.-D., D.G.-A., J.M.-F., R.D.-M.)
| | - A Martínez-Domeño
- From the Departments of Neurology (P.C.-R., F.C., L.P.-S., A.M.-D., D.G.-A., J.M.-F., R.D.-M.)
| | - D Guisado-Alonso
- From the Departments of Neurology (P.C.-R., F.C., L.P.-S., A.M.-D., D.G.-A., J.M.-F., R.D.-M.)
| | - J Martí-Fàbregas
- From the Departments of Neurology (P.C.-R., F.C., L.P.-S., A.M.-D., D.G.-A., J.M.-F., R.D.-M.)
| | - R Delgado-Mederos
- From the Departments of Neurology (P.C.-R., F.C., L.P.-S., A.M.-D., D.G.-A., J.M.-F., R.D.-M.)
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13
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Vásquez-Villalobos V, Vergaray D, Méndez J, Barrios I, Baquedano R, Caldas C, Cruz J, Gamboa J, Rivera I. Effect of the light emitting diodes intensity and photoperiod in the optimization of the Spirulina (Arthrospira) biomass production. sci agropecu 2017. [DOI: 10.17268/sci.agropecu.2017.01.04] [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: 11/12/2022] Open
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14
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Palacio I, Pinardi AL, Martínez JI, Preobrajenski A, Cossaro A, Jancarik A, Stará I, Starý I, Méndez J, Martín-Gago JA, López MF. Spectroscopic characterization of the on-surface induced (cyclo)dehydrogenation of a N-heteroaromatic compound on noble metal surfaces. Phys Chem Chem Phys 2017; 19:22454-22461. [DOI: 10.1039/c7cp03955g] [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: 01/18/2023]
Abstract
Connecting polycyclic aromatic hydrocarbons by on-surface chemistry.
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15
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Milla MJ, Hernández-Rodríguez I, Méndez J, García JM, Ulloa JM, Guzmán Á. Scanning tunneling spectroscopic monitoring of surface states role on water passivation of InGaAs uncapped quantum dots. RSC Adv 2017. [DOI: 10.1039/c7ra04640e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A detailed local analysis of the impact of water coverage on the density of surface states in In0.5Ga0.5As surface nanostructures is reported by spectroscopy monitoring the surface conductivity at the nanometer-scale.
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Affiliation(s)
- M. J. Milla
- Instituto de Sistemas Optoelectrónicos y Microtecnología (ISOM)
- Madrid
- Spain
| | | | - J. Méndez
- Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC)
- Spain
| | - Jorge M. García
- MBE Lab
- IMM-Instituto de Microelectrónica de Madrid (CNM-CSIC)
- Spain
| | - J. M. Ulloa
- Instituto de Sistemas Optoelectrónicos y Microtecnología (ISOM)
- Madrid
- Spain
| | - Á. Guzmán
- Instituto de Sistemas Optoelectrónicos y Microtecnología (ISOM)
- Madrid
- Spain
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16
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Nicoara N, Méndez J, Gómez-Rodríguez JM. Visualizing the interface state of PTCDA on Au(111) by scanning tunneling microscopy. Nanotechnology 2016; 27:475707. [PMID: 27782009 DOI: 10.1088/0957-4484/27/47/475707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We have investigated by means of scanning tunneling microscopy (STM) and spectroscopy (STS) the electronic structure of PTCDA (3,4,9,10-perylene-tetracarboxylic-dianhydride) molecular monolayers grown on Au(111). Thanks to our STM/STS measurements, performed under ultra-high vacuum conditions and low temperature, an interface state directly derived from the Shockley-type surface state of pristine Au(111) has been detected. Low bias voltage STM images show the formation of standing wave patterns both on Au(111) and on Au(111) covered by a PTCDA monolayer. These patterns result from the scattering of quasi-free 2D electron surface states with surface defects. By Fourier transforming STM images, the corresponding wavevectors have been extracted. In particular, the simultaneous imaging of both pristine and PTCDA covered Au(111) areas has allowed to measure the Fermi contours and the Fermi wavevectors of both systems. These measurements show that one monolayer PTCDA on Au(111) presents an interface state with an isotropic circular Fermi contour and smaller Fermi wavector ([Formula: see text]) than the corresponding Fermi wavector of pristine Au(111) ([Formula: see text]). This picture is consistent with an upward shift of the Shockley-type surface state due to the presence of the molecular monolayer.
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Affiliation(s)
- N Nicoara
- Departamento de Física de la Materia Condensada, Universidad Autónoma de Madrid, E-28049-Madrid, Spain. International Iberian Nanotechnology Laboratory, 4715-330 Braga, Portugal
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17
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Nicoara N, Méndez J, Gómez-Rodríguez JM. Growth of ordered molecular layers of PTCDA on Pb/Si(111) surfaces: a scanning tunneling microscopy study. Nanotechnology 2016; 27:365706. [PMID: 27482876 DOI: 10.1088/0957-4484/27/36/365706] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The growth of well-ordered layers of PTCDA (3,4,9,10-perylene-tetracarboxylic-dianhydride) molecules on Pb/Si(111) surfaces has been investigated by scanning tunneling microscopy (STM) under ultra-high vacuum conditions. These Pb/Si(111) substrates, which present several distinct phases with different reconstructions, have allowed the exploration of new passivation schemes for the growth of ordered organic layers on Si(111) surfaces. According to our STM measurements, the higher Pb coverage phases (namely the so-called hexagonal incommensurate and [Formula: see text] reconstructions) present rather inert surfaces that allow easy diffusion of PTCDA molecules at room temperature and the formation of a well ordered first molecular layer which displays a herringbone reconstruction. For multilayer PTCDA coverage on these Pb/Si(111) phases, the formation of three-dimensional crystallites, with structure similar to that of the bulk PTCDA crystal, has been observed, indicating that a Stranski-Krastanov growth mode is dominant. On lower Pb coverage substrates (presenting the defective [Formula: see text] and mosaic [Formula: see text] reconstructions) no long range PTCDA order has been obtained. The systematic variation of the substrate reconstruction has allowed in the present work the relation of the surface reactivity of each reconstruction to the formation of ordered layers of PTCDA on Pb/Si(111) substrates.
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Affiliation(s)
- N Nicoara
- Departamento de Física de la Materia Condensada, Universidad Autónoma de Madrid, E-28049-Madrid, Spain. International Iberian Nanotechnology Laboratory, 4715-330 Braga, Portugal
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Tapia G, Méndez J, Inostroza L. Different combinations of morpho-physiological traits are responsible for tolerance to drought in wild tomatoes Solanum chilense and Solanum peruvianum. Plant Biol (Stuttg) 2016; 18:406-16. [PMID: 26499789 DOI: 10.1111/plb.12409] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [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: 07/27/2015] [Accepted: 10/21/2015] [Indexed: 05/23/2023]
Abstract
Herbaceous species can modify leaf structure during the growing season in response to drought stress and water loss. Evolution can select combinations of traits in plants for efficient water use in restricted environments. We investigated plant traits that mediate adaptation and acclimation to water stress in two herbaceous drought-tolerant species. Anatomical, morphological and physiological traits related to stems and leaves were examined under optimal watering (OW) and a long period of restricted watering (RW) in 11 accessions from three Solanaceae species (Solanum chilense, S. peruvianum and S. lycopersicum). The relationships between these traits were tested using linear regression and PCA. There were significant differences in anatomical traits between the species under both OW and RW, where leaf area correlated with stem diameter. Proline and total carbohydrates accumulated highly in S. chilense and S. peruvianum, respectively, and these osmolytes were strongly correlated with increased osmotic potential. Stomatal density varied between species but not between acclimation treatments, while stomatal rate was significantly higher in wild tomatoes. There was a strong positive relationship between stem growth rate and a group of traits together expressed as total stomatal number. Total stomata is described by integration of leaf area, stomatal density, height and internode length. It is proposed that constitutive adaptations and modifications through acclimation that mediate RW play an important role in tolerance to drought stress in herbaceous plants. The capacity for growth under drought stress was not associated with any single combination of traits in wild tomatoes, since the two species differed in relative levels of expression of various phenotypic traits.
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Affiliation(s)
- G Tapia
- Unidad de Recursos Genéticos Vegetales, Instituto de Investigaciones Agropecuarias, INIA-Quilamapu, Chillán, Chile
| | - J Méndez
- Unidad de Recursos Genéticos Vegetales, Instituto de Investigaciones Agropecuarias, INIA-Quilamapu, Chillán, Chile
| | - L Inostroza
- Unidad de Recursos Genéticos Vegetales, Instituto de Investigaciones Agropecuarias, INIA-Quilamapu, Chillán, Chile
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19
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Alishahi M, Mahboubi F, Mousavi Khoie SM, Aparicio M, Lopez-Elvira E, Méndez J, Gago R. Structural properties and corrosion resistance of tantalum nitride coatings produced by reactive DC magnetron sputtering. RSC Adv 2016. [DOI: 10.1039/c6ra17869c] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [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] Open
Abstract
There is a correlation between the corrosion resistance, structure, roughness and the porosity of TaN sputtered films.
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Affiliation(s)
- M. Alishahi
- Department of Mining and Metallurgical Engineering
- Amirkabir University of Technology
- Tehran 15875-4413
- Iran
| | - F. Mahboubi
- Department of Mining and Metallurgical Engineering
- Amirkabir University of Technology
- Tehran 15875-4413
- Iran
| | - S. M. Mousavi Khoie
- Department of Mining and Metallurgical Engineering
- Amirkabir University of Technology
- Tehran 15875-4413
- Iran
| | - M. Aparicio
- Instituto de Cerámica y Vidrio
- Consejo Superior de Investigaciones Científicas
- 28049 Madrid
- Spain
| | - E. Lopez-Elvira
- Instituto de Ciencia de Materiales de Madrid
- Consejo Superior de Investigaciones Científicas
- 28049 Madrid
- Spain
| | - J. Méndez
- Instituto de Ciencia de Materiales de Madrid
- Consejo Superior de Investigaciones Científicas
- 28049 Madrid
- Spain
| | - R. Gago
- Instituto de Ciencia de Materiales de Madrid
- Consejo Superior de Investigaciones Científicas
- 28049 Madrid
- Spain
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20
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Otero-Irurueta G, Martínez JI, Bueno R, Palomares FJ, Salavagione HJ, Singh MK, Méndez J, Ellis GJ, López MF, Martín-Gago JA. Adsorption and Coupling of 4-aminophenol on Pt(111) surfaces. Surf Sci 2015; 646:5-12. [PMID: 27279673 PMCID: PMC4894458 DOI: 10.1016/j.susc.2015.08.039] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We have deposited 4-aminophenol on Pt(111) surfaces in ultra-high vacuum and studied the strength of its adsorption through a combination of STM, LEED, XPS and ab initio calculations. Although an ordered (2√3×2√3)R30° phase appears, we have observed that molecule-substrate interaction dominates the adsorption geometry and properties of the system. At RT the high catalytic activity of Pt induces aminophenol to lose the H atom from the hydroxyl group, and a proportion of the molecules lose the complete hydroxyl group. After annealing above 420K, all deposited aminophenol molecules have lost the OH moiety and some hydrogen atoms from the amino groups. At this temperature, short single-molecule oligomer chains can be observed. These chains are the product of a new reaction that proceeds via the coupling of radical species that is favoured by surface diffusion.
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Affiliation(s)
- G. Otero-Irurueta
- ESISNA Group, Dept. Surfaces, Coatings and Molecular Astrophysics, Institute of Material Science of Madrid (ICMM-CSIC), Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain
- Center for Mechanical Technology and Automation (TEMA), Department of Mechanical Engineering, University of Aveiro, 3810-193 Aveiro, Portugal
| | - J. I. Martínez
- ESISNA Group, Dept. Surfaces, Coatings and Molecular Astrophysics, Institute of Material Science of Madrid (ICMM-CSIC), Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain
| | - R.A. Bueno
- ESISNA Group, Dept. Surfaces, Coatings and Molecular Astrophysics, Institute of Material Science of Madrid (ICMM-CSIC), Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain
| | - F. J. Palomares
- ESISNA Group, Dept. Surfaces, Coatings and Molecular Astrophysics, Institute of Material Science of Madrid (ICMM-CSIC), Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain
| | - H. J. Salavagione
- Polymer Physics Group, Dept. Polymer Physics, Elastomers and Energy Applications, Institute of Polymer Science and Technology (ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | - M. K. Singh
- Center for Mechanical Technology and Automation (TEMA), Department of Mechanical Engineering, University of Aveiro, 3810-193 Aveiro, Portugal
| | - J. Méndez
- ESISNA Group, Dept. Surfaces, Coatings and Molecular Astrophysics, Institute of Material Science of Madrid (ICMM-CSIC), Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain
| | - G. J. Ellis
- Polymer Physics Group, Dept. Polymer Physics, Elastomers and Energy Applications, Institute of Polymer Science and Technology (ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | - M. F. López
- ESISNA Group, Dept. Surfaces, Coatings and Molecular Astrophysics, Institute of Material Science of Madrid (ICMM-CSIC), Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain
| | - J. A. Martín-Gago
- ESISNA Group, Dept. Surfaces, Coatings and Molecular Astrophysics, Institute of Material Science of Madrid (ICMM-CSIC), Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain
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Díaz-Fernández D, Méndez J, Yubero F, Domínguez-Cañizares G, Gutiérrez A, Soriano L. Study of the early stages of growth of Co oxides on oxide substrates. SURF INTERFACE ANAL 2014. [DOI: 10.1002/sia.5366] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- D. Díaz-Fernández
- Departamento de Física Aplicada and Instituto de Ciencia de Materiales Nicolás Cabrera; Universidad Autónoma de Madrid; Cantoblanco E-28049 Madrid Spain
| | - J. Méndez
- ESISNA, Instituto de Ciencia de Materiales de Madrid, ICMM-CSIC; Cantoblanco E-28049 Madrid Spain
| | - F. Yubero
- Instituto de Ciencia de Materiales de Sevilla, ICMSE (CSIC-US); Avda. Americo Vespuccio 49, Isla de la Cartuja E- 41092 Sevilla Spain
| | - G. Domínguez-Cañizares
- Departamento de Física Aplicada and Instituto de Ciencia de Materiales Nicolás Cabrera; Universidad Autónoma de Madrid; Cantoblanco E-28049 Madrid Spain
| | - A. Gutiérrez
- Departamento de Física Aplicada and Instituto de Ciencia de Materiales Nicolás Cabrera; Universidad Autónoma de Madrid; Cantoblanco E-28049 Madrid Spain
| | - L. Soriano
- Departamento de Física Aplicada and Instituto de Ciencia de Materiales Nicolás Cabrera; Universidad Autónoma de Madrid; Cantoblanco E-28049 Madrid Spain
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Altamirano-Bustamante MM, Altamirano-Bustamante NF, Lifshitz A, Mora-Magaña I, de Hoyos A, Avila-Osorio MT, Quintana-Vargas S, Aguirre JA, Méndez J, Murata C, Nava-Diosdado R, Martínez-González O, Calleja E, Vargas R, Mejía-Arangure JM, Cortez-Domínguez A, Vedrenne-Gutiérrez F, Sueiras P, Garduño J, Islas-Andrade S, Salamanca F, Kumate-Rodríguez J, Reyes-Fuentes A. Promoting networks between evidence-based medicine and values-based medicine in continuing medical education. BMC Med 2013; 11:39. [PMID: 23414220 PMCID: PMC3606451 DOI: 10.1186/1741-7015-11-39] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Accepted: 02/15/2013] [Indexed: 12/05/2022] Open
Abstract
BACKGROUND In recent years, medical practice has followed two different paradigms: evidence-based medicine (EBM) and values-based medicine (VBM). There is an urgent need to promote medical education that strengthens the relationship between these two paradigms. This work is designed to establish the foundations for a continuing medical education (CME) program aimed at encouraging the dialogue between EBM and VBM by determining the values relevant to everyday medical activities. METHODS A quasi-experimental, observational, comparative, prospective and qualitative study was conducted by analyzing through a concurrent triangulation strategy the correlation between healthcare personnel-patient relationship, healthcare personnel's life history, and ethical judgments regarding dilemmas that arise in daily clinical practice.In 2009, healthcare personnel working in Mexico were invited to participate in a free, online clinical ethics course. Each participant responded to a set of online survey instruments before and after the CME program. Face-to-face semi-structured interviews were conducted with healthcare personnel, focusing on their views and representations of clinical practice. RESULTS The healthcare personnel's core values were honesty and respect. There were significant differences in the clinical practice axiology before and after the course (P <0.001); notably, autonomy climbed from the 10th (order mean (OM) = 8.00) to the 3rd position (OM = 5.86). In ethical discernment, the CME program had an impact on autonomy (P ≤0.0001). Utilitarian autonomy was reinforced in the participants (P ≤0.0001). Regarding work values, significant differences due to the CME intervention were found in openness to change (OC) (P <0.000), self-transcendence (ST) (P <0.001), and self-enhancement (SE) (P <0.019). Predominant values in life history, ethical discernment and healthcare personnel-patient relation were beneficence, respect and compassion, respectively. CONCLUSIONS The healthcare personnel participating in a CME intervention in clinical ethics improved high-order values: Openness to change (OC) and Self Transcendence (ST), which are essential to fulfilling the healing ends of medicine. The CME intervention strengthened the role of educators and advisors with respect to healthcare personnel. The ethical values developed by healthcare professionals arise from their life history and their professional formation.
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Méndez J, Guijarro JA. In vivo monitoring of Yersinia ruckeri in fish tissues: progression and virulence gene expression. Environ Microbiol Rep 2013; 5:179-185. [PMID: 23757147 DOI: 10.1111/1758-2229.12030] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Revised: 12/14/2012] [Accepted: 12/16/2012] [Indexed: 06/02/2023]
Abstract
In this study, the utilization of bioluminescence imaging (BLI) allowed us to define the progression of Yersinia ruckeri during the infection of rainbow trout. A luminescent Y. ruckeri 150 strain was engineered using the pCS26-Pac plasmid containing the lux operon from Photorhabdus luminescens. Two different models of infection of rainbow trout were defined depending on the route in which bacteria were administered, being the gut the major organ affected following bath immersion. This indicates that this organ is important for bacterial dissemination inside the fish and the establishment of the infection. Moreover, the expression of three previously selected operons by in vivo expression technology (IVET) was analysed, the yhlBA involved in the production of a haemolysin, the cdsAB related to the uptake of cysteine and the yctCBA implicated in citrate uptake. Apart from these factors, the expression of yrp1 encoding a serralysin metalloprotease involved in pathogenesis was also analysed. The results indicated that all of the assayed promoters were expressed during infection of rainbow trout. In addition to these findings, the methodology described in this work constitutes a useful model for studying the infection process in other fish pathogenic bacteria.
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Affiliation(s)
- J Méndez
- Área de Microbiología, Departamento de Biología Funcional, Facultad de Medicina, IUBA, Universidad de Oviedo, 33006 Oviedo, Asturias, Spain
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Serrano MP, Valencia DG, Méndez J, Mateos GG. Influence of feed form and source of soybean meal of the diet on growth performance of broilers from 1 to 42 days of age. 1. Floor pen study. Poult Sci 2012; 91:2838-44. [PMID: 23091140 DOI: 10.3382/ps.2012-02371] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
In total, 3,120 broilers were used to study the effects of feed form and source of soybean meal (SBM) of the diet on growth performance. From 1 to 21 d of age, there were 12 treatments arranged factorially with 3 feed forms (mash, crumbles, and pellets) and 4 commercial sources of SBM that differed in the CP content [48.1 and 46.2% CP from the United States (USA-1 and USA-2), 47.6% CP from Brazil (BRA), and 46.3% CP from Argentina (ARG)]. From 21 to 42 d of age, diets were fed as pellets. Diets were formulated assuming that all SBM had similar digestible amino acid content per unit of CP. From 1 to 21 d of age, chicks fed crumbles or pellets had higher (P < 0.001) ADG than chicks fed mash. Also, chicks fed pellets had better (P < 0.001) feed-to-gain ratio (F:G) than chicks fed crumbles, and both were better than chicks fed mash. However, from 21 to 42 d of age, F:G was best (P < 0.001) for chicks previously fed mash. For the entire experimental period, broilers that were fed crumbles or pellets from 1 to 21 d of age had higher (P < 0.001) ADG than broilers that were fed mash. Also, broilers that were fed pellets had better (P < 0.05) F:G than broilers fed mash, with broilers fed crumbles being intermediate. Broilers fed the USA-2 meal had higher (P < 0.01) ADG than broilers fed the BRA or the ARG meals, with broilers fed the USA-1 meal being intermediate. Feed efficiency tended (P = 0.07) to be hindered in broilers fed the BRA meal. The results show that pelleting improved growth performance of broilers from 1 to 42 d of age with effects being less evident at 42 d than at 21 d of age. Source of SBM affected growth performance suggesting the need for a better control of chemical composition and quality of this ingredient before diet formulation.
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Affiliation(s)
- M P Serrano
- Departamento de Producción Animal, Universidad Politécnica de Madrid, Ciudad Universitaria, Madrid, Spain
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25
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Méndez J, Pardo L, Rey-Benito G. Concurrent infection of different dengue virus serotypes in fatal cases during an outbreak in Colombia, 2010. Int J Infect Dis 2012. [DOI: 10.1016/j.ijid.2012.05.312] [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: 11/25/2022] Open
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26
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Fernández-Tajes J, Arias-Pérez A, Fernández-Moreno M, Méndez J. Sharp decrease of genetic variation in two Spanish localities of razor clam Ensis siliqua: natural fluctuation or Prestige oil spill effects? Ecotoxicology 2012; 21:225-233. [PMID: 21877227 DOI: 10.1007/s10646-011-0781-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/20/2011] [Indexed: 05/31/2023]
Abstract
Pollution is one of the main concerns in marine ecosystems nowadays. Environmental anthropogenic-mediated toxicants may affect genetic diversity both at the individual and ecosystem levels and may also alter the genetic structure of populations. This study examined the temporal pattern of genetic diversity among populations of the benthic bivalve Ensis siliqua in two locations of Galicia, following the Prestige oil spillage. On November 13, 2002 the oil tanker Prestige sank at 240 km from Galician coast and 63,000 tonnes of heavy fuel were released to the marine environment. E. siliqua samples were sampled between 2001 and 2006. Genetic variation was assessed by means of Random Amplification of Polymorphic DNA (RAPD). A significant decrease in genetic diversity was observed for the 2006 samples. Nei's genetic distance, fixation index (PhiPT), and PCA values also supported differences in the 2006 samples. We hypothesize that the temporal genetic variation observed in E. siliqua populations is due to a strong effect of genetic drift caused by a reduction in population size and that the indirect effects of the Prestige spill possibly caused this reduction.
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Affiliation(s)
- J Fernández-Tajes
- Department of Molecular and Cell Biology, Facultad de Ciencias, Universidad de A Coruña, 15071 A Coruña, Spain.
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Cabañes N, Igea JM, de la Hoz B, Agustín P, Blanco C, Domínguez J, Lázaro M, Lleonart R, Méndez J, Nieto A, Rodríguez A, Rubia N, Tabar A, Beitia JM, Dieguez MC, Martínez-Cócera C, Quirce S. Latex allergy: Position Paper. J Investig Allergol Clin Immunol 2012; 22:313-330. [PMID: 23101306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Abstract
Correct management of latex allergy is essential to ensure adequate care of patients who are allergic to latex, which is ubiquitous in the health care setting. In this Position Paper, the Latex Committee of the Spanish Society of Allergology and Clinical Immunology provides guidelines for the management of latex allergy.
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Affiliation(s)
- N Cabañes
- Allergy Department, Hospital Virgen del Valle, Toledo, Spain
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Acosta K, Zamora L, Fernández A, Arocha Y, Martínez Y, Santos M, Méndez J, Chávez A, Leyva N. First report of ‘
Candidatus
Phytoplasma asteris’ (group 16SrI) affecting papaya in Cuba. ACTA ACUST UNITED AC 2011. [DOI: 10.5197/j.2044-0588.2011.024.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- K. Acosta
- University Las Tunas (ULT)Ave. Carlos J. Finlay, Israel Santos, PC75200Las TunasCuba
| | - L. Zamora
- National Centre for Animal and Plant Health (CENSA)San José de Las LajasHavanaCuba
| | - A. Fernández
- University Las Tunas (ULT)Ave. Carlos J. Finlay, Israel Santos, PC75200Las TunasCuba
| | | | - Y. Martínez
- National Centre for Animal and Plant Health (CENSA)San José de Las LajasHavanaCuba
| | - M.E. Santos
- Interdisciplinary Centre of Research for Integral Regional Development of National Polytechnic Institute (CIIDIR‐IPN), UnitSinaloaMexico
| | - J. Méndez
- Interdisciplinary Centre of Research for Integral Regional Development of National Polytechnic Institute (CIIDIR‐IPN), UnitSinaloaMexico
| | - A. Chávez
- Interdisciplinary Centre of Research for Integral Regional Development of National Polytechnic Institute (CIIDIR‐IPN), UnitSinaloaMexico
| | - N.E. Leyva
- Interdisciplinary Centre of Research for Integral Regional Development of National Polytechnic Institute (CIIDIR‐IPN), UnitSinaloaMexico
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Gómez Palacios A, Barrios B, Gutiérrez MT, Expósito A, Gómez Zabala J, Roca B, Pérez de Villarreal P, Ruiz S, Escobar A, Iturburu I, Méndez J. [Morbidity and costs in complete thyroidectomies. Improvement in Value of the Process by a change in the management]. ACTA ACUST UNITED AC 2011; 27:161-8. [PMID: 22137200 DOI: 10.1016/j.cali.2011.09.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2011] [Revised: 09/30/2011] [Accepted: 09/30/2011] [Indexed: 12/01/2022]
Abstract
OBJECTIVES 1) To present the postoperative morbidity of complete thyroidectomies and the results of their clinical management and costs obtained after surgery. 2) To compare the results obtained for the morbidity and costs in the complete thyroidectomy Process, after the management changes introduced by the Endocrine Surgical Unit (ESU). 3) To define whether these changes improve the Value (benefit/cost ratio) of the Process. MATERIAL AND METHODS Prospective study of cohorts conducted on 529 complete thyroidectomies performed between 1998 and 2011. We present their clinical-pathological characteristics and we compare the clinical and management results obtained after surgery in 2 time periods: 1998-2006 without ESU (group 1, 205 patients) and 2007-2011 with ESU (group 2, 324 patients). The clinical results and the possible benefits are assessed by studying the morbimortality (recurrent lesions, hypocalcaemia [<8 mg/dl], suffocative haematomas and bleeding), and those of management, for the evaluation of the use of operating room time, the average stay and the total cost of the Process. The statistical comparison study was made using Student t test, for the comparison of means and the Chi(2) to compare percentages, accepting P<.05 as significant. RESULTS The global percentage of transient recurrent dysfunctions (TRD) was 6%, and for definitive recurrent paralysis (DRP) it was 1.5%. Hypocalcaemia, at 24 hours was 54.6%, at one month 7%, at six months 6.2% and that of definitive hypoparathyroidism 1.3%. There were 2.8% of suffocative haematomas and 2% adverse effects. The mean surgical time was 98 minutes, and the average stay was 3.66 days. In the comparison of results of the groups, the ESU improved the TRD index by nearly 7 points (10.2 vs. 3.4%, P=.002), that of DRP by 1.5 (2.4 vs. 0.4%; P=.3) until reaching under 1%. The figures on bleeding at 24 hours (53 vs. 44 cc; P=.002) and 48 hours (23 to 17 cc; P<.001), the rate of haematomas by another 6 points (6.3 vs. 0.6%; P<.001), and that of hypocalcaemia at 24 hours (P=.01). The average stay also improved (4.79 vs. 2.94 days; P<.001), the use of operating room time (reduced by 20 minutes/operation; P<.001), the total cost of the Process, decreasing by more than € 2,000/Process (P<.001), and produced a total savings for the hospital in the period of study of € 665,820. CONCLUSIONS 1) The global results (post-operative morbidity) of our total thyroidectomies are within the quality standards. 2) The surgical specialisation and the changes introduced by the ESU improved the clinical results (greater benefit) and those of management, cutting down the average stay and the operating room usage time and decreasing costs. 3) The change in management increased the Value of the Process.
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Affiliation(s)
- A Gómez Palacios
- Unidad de Cirugía Endocrina, Servicio de Cirugía General y Aparato Digestivo, Hospital Universitario de Basurto, Bilbao, España.
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Castillo C, Benedito J, Pereira V, Sotillo J, Suárez A, Méndez J, Vázquez P, Hernández J. Influence of grain processing in regard to serum metabolites and enzymes for finishing bull calves. J Anim Feed Sci 2011. [DOI: 10.22358/jafs/66202/2011] [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: 11/27/2022]
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Otero G, González C, Pinardi AL, Merino P, Gardonio S, Lizzit S, Blanco-Rey M, Van de Ruit K, Flipse CFJ, Méndez J, de Andrés PL, Martín-Gago JA. Ordered vacancy network induced by the growth of epitaxial graphene on Pt(111). Phys Rev Lett 2010; 105:216102. [PMID: 21231325 DOI: 10.1103/physrevlett.105.216102] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2010] [Revised: 09/23/2010] [Indexed: 05/23/2023]
Abstract
We have studied large areas of (√3×√3)R30° graphene commensurate with a Pt(111) substrate. A combination of experimental techniques with ab initio density functional theory indicates that this structure is related to a reconstruction at the Pt surface, consisting of an ordered vacancy network formed in the outermost Pt layer and a graphene layer covalently bound to the Pt substrate. The formation of this reconstruction is enhanced if low temperatures and polycyclic aromatic hydrocarbons are used as molecular precursors for epitaxial growth of the graphene layers.
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Affiliation(s)
- G Otero
- Instituto Ciencia de Materiales de Madrid (CSIC), C. Sor Juana Inés de la Cruz 3, 28049-Madrid, Spain
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Alvarez C, García-Rebollar P, Cachaldora P, Méndez J, de Blas JC. Effects of dietary conjugated linoleic acid and high-oleic sunflower oil on performance and egg quality in laying hens. Br Poult Sci 2010; 46:80-6. [PMID: 15835256 DOI: 10.1080/00071660400023870] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
(1) Laying hen performance, yolk fatty acid (FA) concentrations, sensory quality and firmness of eggs were evaluated with respect to the inclusion in the diet of conjugated linoleic acid (CLA) and high-oleic acid sunflower oil (HOSO). (2) Nine diets were arranged factorially, with three concentrations of CIA (0, 1 and 2 g/kg) and HOSO (10, 20 and 30 g/kg). (3) Type of diet did not affect egg production traits. (4) Dietary addition of CLA decreased yolk lipid content and yolk lipid concentrations of monounsaturated FA, C(20:4 n-6) and C(22:6 n-3), but increased those of CLA and saturated FA. (5) Dietary addition of HOSO increased monounsaturated FA concentrations in the yolk lipid but decreased those of CLA and saturated FA. (6) CLA supplementation increased yolk moisture and firmness and impaired the sensory quality of eggs. (7) An interaction between CLA and HOSO addition was found as effects of CLA addition on yolk lipid CLA concentrations and egg quality traits were smaller when the amount of HOSO in the diet increased. (8) Regression equations have been calculated in order to predict yolk CLA and C(18:1), concentration from dietary composition, and yolk firmness from yolk FA composition.
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Affiliation(s)
- C Alvarez
- COREN, Sociedad Cooperativa Galega, Ourense, Spain
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Sánchez-Sánchez C, González C, Jelinek P, Méndez J, de Andres PL, Martín-Gago JA, López MF. Understanding atomic-resolved STM images on TiO2(110)-(1 x 1) surface by DFT calculations. Nanotechnology 2010; 21:405702. [PMID: 20823501 DOI: 10.1088/0957-4484/21/40/405702] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We present a combination of experimental STM images and DFT calculations to understand the atomic scale contrast of features found in high-resolution STM images. Simulating different plausible structural models for the tip, we have been able to reproduce various characteristics previously reported in experimental images on TiO(2)(110)-(1 x 1) under controlled UHV conditions. Our results allow us to determine the influence of different chemical and morphological tip terminations on the atomic-resolution STM images of the TiO(2)(110)-(1 x 1) surface. The commonest images have been properly explained using standard models for a W tip, either clean or with a single O atom located at the apex. Furthermore, a double transfer of oxygen atoms can account for different types of bizarre atomic-resolution features occasionally seen, and not conclusively interpreted before. Importantly, we discuss how typical point-defects are imaged on this surface by different tips, namely bridging O vacancies and adsorbed OH groups.
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Losada B, García-Rebollar P, Álvarez C, Cachaldora P, Ibáñez M, Méndez J, De Blas J. The prediction of apparent metabolisable energy content of oil seeds and oil seed by-products for poultry from its chemical components, in vitro analysis or near-infrared reflectance spectroscopy. Anim Feed Sci Technol 2010. [DOI: 10.1016/j.anifeedsci.2010.06.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Nevshupa R, Martínez L, Álvarez L, López MF, Huttel Y, Méndez J, Román E. Influence of thermal ageing on surface degradation of ethylene-propylene-diene elastomer. J Appl Polym Sci 2010. [DOI: 10.1002/app.32519] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Reimundo P, Menéndez A, Méndez J, Pérez-Pascual D, Navais R, Gómez E, Braña A, Guijarro J. dltA gene mutation in the teichoic acids alanylation system of Lactococcus garvieae results in diminished proliferation in its natural host. Vet Microbiol 2010; 143:434-9. [DOI: 10.1016/j.vetmic.2009.12.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2009] [Revised: 11/27/2009] [Accepted: 12/02/2009] [Indexed: 10/20/2022]
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Fontdevila A, Zapata C, Alvarez G, Sanchez L, Méndez J, Enriquez I. Genetic Coadaptation in the Chromosomal Polymorphism of DROSOPHILA SUBOBSCURA. I. Seasonal Changes of Gametic Disequilibrium in a Natural Population. Genetics 2010; 105:935-55. [PMID: 17246183 PMCID: PMC1202235 DOI: 10.1093/genetics/105.4.935] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Seasonal changes in gene arrangement and allozyme frequencies have been investigated in Drosophila subobscura for several years. Some arrangements (O(st) and O(3+4+7)) show seasonal variation, which suggests that chromosomal polymorphism is flexible in this species. Seasonal changes in allozyme frequencies for Lap and Pept-1 loci, both located within the same inversions of chromosome O, are significant only inside the O(st) arrangement, but not inside O(3+4) arrangement. This arrangement-dependent response of allozyme generates variation in arrangement-allozyme disequilibrium. The historical hypothesis on the maintenance of disequilibria cannot explain these seasonal changes, and some kind of natural selection must be invoked. Association between Lap and Pept-1 is also seasonal inside O(st) but not inside O(3+4). We propose that O(st) probably consists of a finite array of supergenes that are differentially favored in each season by natural selection. The present evidence on this supergene selection and other genetic, biogeographic and phylogenetic data points to O(3+4) as the most primitive gene order among the present arrangements.
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Affiliation(s)
- A Fontdevila
- Departamento de Genética, Facultad de Biología, Universidad de Santiago, Spain
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39
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Batista-Arteaga M, Santana M, Lozano O, Méndez J, Quesada O, Arbelo M, Espinosa J. Medical and surgical management of a dystocia because of foetopelvic disproportion in an African lioness (Panthera leo). Reprod Domest Anim 2010; 46:362-5. [PMID: 20456665 DOI: 10.1111/j.1439-0531.2010.01630.x] [Citation(s) in RCA: 4] [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: 11/29/2022]
Abstract
Medical and surgical management of a foetopelvic dystocia in an African lioness (Panthera leo) and the post-operative complications are reported. A caesarean section was performed to extract an oversize foetus blocked at the cervical canal; the lioness died 36 h after surgery. At necropsy, an abdominal effusion with sero-haemorrhagic fluid was observed, along with a fibrinopurulent exudate adhered to the serosal surfaces of the pelvic and abdominal cavities. In addition, the pelvic symphysis was not cartilaginous, but formed a firm and rigid joint between the pubis and ischium of each hip. The macroscopic and microscopic findings confirmed the presence of metritis, vaginitis and peritonitis. Dystocia may be caused by the premature ossification of the pelvic symphysis, reducing the dimensions of the pelvic cavity.
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Affiliation(s)
- M Batista-Arteaga
- Unit of Reproduction and Obstetrics, University Veterinary Hospital, Las Palmas, Spain.
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40
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Preda I, Soriano L, Alvarez L, Méndez J, Yubero F, Gutiérrez A, Sanz JM. Study of the morphology of NiO nanostructures grown on highly ordered pyrolytic graphite, by the Tougaard method and atomic force microscopy: a comparative study. SURF INTERFACE ANAL 2010. [DOI: 10.1002/sia.3222] [Citation(s) in RCA: 6] [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] [Indexed: 11/12/2022]
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41
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Osorio J, Faúndez V, Marileo J, Mansilla N, Méndez J. El Síndrome de Quemarse por el Trabajo (SQT) en Profesores de Colegios Privados y Liceos Técnicos de Santiago de Chile. Revista de Psicologia da IMED 2009. [DOI: 10.18256/2175-5027/psico-imed.v1n2p243-252] [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: 11/24/2022] Open
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Arias A, Freire R, Boudry P, Heurtebise S, Méndez J, Insua A. Single nucleotide polymorphism for population studies in the scallops Aequipecten opercularis and Mimachlamys varia. CONSERV GENET 2008. [DOI: 10.1007/s10592-008-9766-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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43
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García-Rebollar P, Cachaldora P, Alvarez C, De Blas C, Méndez J. Effect of the combined supplementation of diets with increasing levels of fish and linseed oils on yolk fat composition and sensorial quality of eggs in laying hens. Anim Feed Sci Technol 2008. [DOI: 10.1016/j.anifeedsci.2007.03.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [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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44
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Méndez J, Mello‐Patiu CA, Pape T. New flesh flies (Diptera: Sarcophagidae) from coastal mangroves of Panama with taxonomic notes and keys. J NAT HIST 2008. [DOI: 10.1080/00222930701850216] [Citation(s) in RCA: 2] [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: 10/22/2022]
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45
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Vera DR, Hoh CK, Méndez J, Wallace AM. CMR 2007: 2.05: Lymphoseek: a molecular imaging agent for sentinel node mapping of melanoma, breast and gastrointestinal cancers. Contrast Media Mol Imaging 2007. [DOI: 10.1002/cmmi.166] [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: 11/06/2022]
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46
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Méndez J, García I, Escudero G, Marcos M, Sánchez A, Cabrerizo S. [Generalized pustular psoriasis induced by tuberculin testing]. Actas Dermosifiliogr 2007; 98:507-8. [PMID: 17669310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023] Open
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47
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Méndez J, García I, Escudero G, Marcos M, Sánchez A, Cabrerizo S. Psoriasis pustulosa generalizada inducida por prueba de la tuberculina. Actas Dermo-Sifiliográficas 2007. [DOI: 10.1016/s0001-7310(07)70121-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Fernández C, Araque C, Méndez J, Angulo L, Fargier B. [Renal handling of beta2 microglobulin. Its significance in carriers of adolescent nephronophthisis (NPH3)]. Invest Clin 2007; 48:139-45. [PMID: 17598637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The adolescent nephronophthisis (NPH3) is a variant of the nephronophthisis. In Venezuela, one to three patients have been registered each year, all of them belonging to the same family tree. The objective of this study was to evaluate the function of the proximal convoluted tubule in NPHP3 carriers; using the beta2M as biological marker. Eight carriers, 7 heterozygotes and 1 homozygote, with normal renal function were compared with a 10 healthy subjects (control group). Serum beta2 microglobulin (beta2M), urinary beta2M, the quotient urinary beta2M/urinary creatinine and the beta2M fractional excretion were determinated. The filtered beta2M and the percentage of reabsortion were calculated. We observed an increase in the plasmatic concentration of beta2M but not related with a decrease of the glomerular filtration. The urinary beta2M, the beta2M/urinary creatinine relation and the fractional excretion of beta2M were normal. The filtered load of beta2M was elevated without increase in the excretion or percentage of reabsortion. We conclude that in our group of NPH3 carriers, functional changes in the proximal convoluted tubule, when measured by urinary excretion of beta2M, were absent. This finding suggests the existence of other mechanism of uptake or degradation of the substance in the proximal convoluted tubule, which have yet to be elucidated.
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Affiliation(s)
- Carmen Fernández
- Unidad de Nefrología, Diálisis y Transplante Renal, IA Hospital Universitario de los Andes, Mérida, Venezuela.
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Castillo C, Hernández J, Méndez J, García-Partida P, Pereira V, Vázquez P, Alonso ML, Benedito JL. Effects of monensin and yeast supplementation on blood acid-base balance in finishing feedlot steers fed a high-grain, high-protein diet. ACTA ACUST UNITED AC 2007. [DOI: 10.1079/asc200681] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
AbstractThe aim of this study was to evaluate the effects of two dietary supplements (monensin and a live yeast culture) on acid-base balance in steers maintained in a commercial feedlot system, considering effects over the finishing productive cycle. Steers (no. =42) were allotted randomly to one of the three study groups: (1) control group (no supplementation, C), (2) monensin supplementation (MON), and (3) live Saccharomyces cerevisiae strain 47 supplementation (SACC). Venous blood samples were collected for the measurement of acid-base parameters and l-lactate. Production parameters were also used as a complementary tool for understanding the internal changes associated with supplementation. During the finishing period, MON steers tended to gain more efficiently than C and SACC steers. In the C group, the finishing-period diet caused a progressive decline in blood bases, in line with the high-grain diet consumption. In contrast, supplemented animals did not show this trend, although lower HCO3− and base excess values were registered in SACC steers than in MON, indicating that ionophore supplementation is less effective for reducing blood base consumption than yeast supplementation. In our study, the lack of the expected response to yeast supplementation may be attributable to the high crude protein content of the ration, a common feature of commercial feedlot industries.
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Correa MM, Bedoya AM, Guerrero MP, Méndez J, Restrepo A, McEwen JG. Diagnosis of paracoccidioidomycosis by a dot blot assay using a recombinant Paracoccidioides brasiliensis p27 protein. Mycoses 2007; 50:41-7. [PMID: 17302747 DOI: 10.1111/j.1439-0507.2006.01306.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A variety of immunological methods have proven useful for Paracoccidioidomycosis (PCM) diagnosis; however, they are often time consuming and many lack sensitivity and specificity, partially attributed to the use of crude antigens, which give cross reactivity. Until now, attempts to clone and express Paracoccidioides brasiliensis immunodominant antigens have presented difficulties of process and problems of cost. In an attempt to obtain a more rapid, sensitive, and specific test for PCM diagnosis, we subcloned the P. brasiliensis p27 gene and used the recombinant protein as the antigen in dot blot assays to evaluate its usefulness in paracoccidioidomicosis diagnosis. The development of an optimised procedure for p27 recombinant protein purification and production led to an easier and less expensive process than the one previously used in our laboratory and allowed the availability of enough purified protein for its evaluation as the antigen in the dot blot assays. In these assays, antibodies present in ten serum samples from seven patients with PCM recognised the recombinant protein showing a sensitivity of 100% with a specificity of 98%. These results confirm the value of the 27-kDa recombinant antigen in the serodiagnosis of paracoccidioidomycosis and that the dot blot format is an alternative to the immunoenzymatic assay procedure.
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Affiliation(s)
- M M Correa
- Grupo de Microbiología Molecular, Escuela de Bacteriología y Laboratorio Clínico, Universidad de Antioquia, Medellín, Colombia.
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