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Moreno G, Ruiz-Botella M, Martín-Loeches I, Gómez Álvarez J, Jiménez Herrera M, Bodí M, Armestar F, Marques Parra A, Estella Á, Trefler S, Jorge García R, Murcia Paya J, Vidal Cortes P, Díaz E, Ferrer R, Albaya-Moreno A, Socias-Crespi L, Bonell Goytisolo J, Sancho Chinesta S, Loza A, Forcelledo Espina L, Pozo Laderas J, deAlba-Aparicio M, Sánchez Montori L, Vallverdú Perapoch I, Hidalgo V, Fraile Gutiérrez V, Casamitjana Ortega A, Martín Serrano F, Nieto M, Blasco Cortes M, Marín-Corral J, Solé-Violán J, Rodríguez A. A differential therapeutic consideration for use of corticosteroids according to established COVID-19 clinical phenotypes in critically ill patients. Med Intensiva 2023; 47:23-33. [PMID: 36272908 PMCID: PMC9579897 DOI: 10.1016/j.medine.2021.10.016] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Accepted: 10/02/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE To determine if the use of corticosteroids was associated with Intensive Care Unit (ICU) mortality among whole population and pre-specified clinical phenotypes. DESIGN A secondary analysis derived from multicenter, observational study. SETTING Critical Care Units. PATIENTS Adult critically ill patients with confirmed COVID-19 disease admitted to 63 ICUs in Spain. INTERVENTIONS Corticosteroids vs. no corticosteroids. MAIN VARIABLES OF INTEREST Three phenotypes were derived by non-supervised clustering analysis from whole population and classified as (A: severe, B: critical and C: life-threatening). We performed a multivariate analysis after propensity optimal full matching (PS) for whole population and weighted Cox regression (HR) and Fine-Gray analysis (sHR) to assess the impact of corticosteroids on ICU mortality according to the whole population and distinctive patient clinical phenotypes. RESULTS A total of 2017 patients were analyzed, 1171 (58%) with corticosteroids. After PS, corticosteroids were shown not to be associated with ICU mortality (OR: 1.0; 95% CI: 0.98-1.15). Corticosteroids were administered in 298/537 (55.5%) patients of "A" phenotype and their use was not associated with ICU mortality (HR=0.85 [0.55-1.33]). A total of 338/623 (54.2%) patients in "B" phenotype received corticosteroids. No effect of corticosteroids on ICU mortality was observed when HR was performed (0.72 [0.49-1.05]). Finally, 535/857 (62.4%) patients in "C" phenotype received corticosteroids. In this phenotype HR (0.75 [0.58-0.98]) and sHR (0.79 [0.63-0.98]) suggest a protective effect of corticosteroids on ICU mortality. CONCLUSION Our finding warns against the widespread use of corticosteroids in all critically ill patients with COVID-19 at moderate dose. Only patients with the highest inflammatory levels could benefit from steroid treatment.
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Affiliation(s)
- G. Moreno
- ICU, Hospital Universitario Joan XXIII/URV/IISPV, Tarragona, Spain
| | - M. Ruiz-Botella
- Tarragona Health Data Research Working Group (THeDaR) – ICU Hospital Universitario Joan XXIII, Tarragona, Spain
| | - I. Martín-Loeches
- Department of Intensive Care Medicine, Multidisciplinary Intensive Care Research Organization (MICRO), St. James's Hospital, Dublin, Ireland
| | - J. Gómez Álvarez
- Tarragona Health Data Research Working Group (THeDaR) – ICU Hospital Universitario Joan XXIII, Tarragona, Spain
| | | | - M. Bodí
- ICU, Hospital Universitario Joan XXIII/URV/IISPV, Tarragona, Spain,CIBERES/CIBERESUCICOVID
| | - F. Armestar
- ICU, Hospital Universitario German Trias i Pujol, Badalona, Spain
| | | | - Á. Estella
- ICU, Hospital Universitario de Jerez, Jerez de la Frontera, Spain
| | - S. Trefler
- ICU, Hospital Universitario Joan XXIII/URV/IISPV, Tarragona, Spain
| | | | | | - P. Vidal Cortes
- UCI, Complejo Hospitalario Universitario de Ourense, Orense, Spain
| | - E. Díaz
- UCI, Hospital Parc Taulí/UAB/CIBERES, Barcelona, Spain
| | - R. Ferrer
- UCI, Hospital Universitario Vall d’Hebron, Barcelona, Spain
| | | | - L. Socias-Crespi
- UCI, Hospital Universitario Son Llátzer, Palma de Mallorca, Spain
| | | | | | - A. Loza
- ICU, Hospital Universitario Nuestra Señora de Valme, Sevilla, Spain
| | - L. Forcelledo Espina
- ICU, Hospital Central de Asturias, Grupo de Investigación de Microbiología Traslacional del ISPA, Oviedo, Spain
| | | | | | | | | | - V. Hidalgo
- ICU, Hospital Complejo Asistencial de Segovia, Segovia, Spain
| | | | - A.M. Casamitjana Ortega
- UCI, Complejo Hospitalario Universitario Insular – Materno Infantil, Las Palmas de Gran Canaria, Spain
| | | | - M. Nieto
- UCI, Hospital Clínico San Carlos, Madrid, Spain
| | | | - J. Marín-Corral
- ICU, Hospital del Mar/GREPAC – IMIM, Barcelona, Spain,Division of Pulmonary Diseases & Critical Care Medicine, UTH San Antonio, San Antonio, TX, USA
| | - J. Solé-Violán
- ICU, Hospital Universitario Dr. Negrín, Las Palmas de Gran Canaria, Spain
| | - A. Rodríguez
- ICU, Hospital Universitario Joan XXIII/URV/IISPV, Tarragona, Spain,CIBERES/CIBERESUCICOVID,Corresponding author
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Proaños NJ, Reyes LF, Bastidas A, Martín-Loeches I, Díaz E, Suberviola B, Moreno G, Bodí M, Nieto M, Estella A, Sole-Violán J, Curcio D, Papiol E, Guardiola J, Rodríguez A. Prior influenza vaccine is not a risk factor for bacterial coinfection in patients admitted to the ICU due to severe influenza. Med Intensiva 2022; 46:436-445. [PMID: 35868720 DOI: 10.1016/j.medine.2021.05.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 05/22/2021] [Indexed: 06/15/2023]
Abstract
OBJECTIVE To determine whether the prior usage of the flu vaccine is a risk factor for bacterial co-infection in patients with severe influenza. DESIGN This was a retrospective observational cohort study of subjects admitted to the ICU. A propensity score matching, and logistic regression adjusted for potential confounders were carried out to evaluate the association between prior influenza vaccination and bacterial co-infection. SETTINGS 184 ICUs in Spain due to severe influenza. PATIENTS Patients included in the Spanish prospective flu registry. INTERVENTIONS Flu vaccine prior to the hospital admission. RESULTS A total of 4175 subjects were included in the study. 489 (11.7%) received the flu vaccine prior to develop influenza infection. Prior vaccinated patients were older 71 [61-78], and predominantly male 65.4%, with at least one comorbid condition 88.5%. Prior vaccination was not associated with bacterial co-infection in the logistic regression model (OR: 1.017; 95%CI 0.803-1.288; p=0.885). After matching, the average treatment effect of prior influenza vaccine on bacterial co-infection was not statistically significant when assessed by propensity score matching (p=0.87), nearest neighbor matching (p=0.59) and inverse probability weighting (p=0.99). CONCLUSIONS No association was identified between prior influenza vaccine and bacterial coinfection in patients admitted to the ICU due to severe influenza. Post influenza vaccination studies are necessary to continue evaluating the possible benefits.
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Affiliation(s)
| | - L F Reyes
- Universidad de La Sabana, Chía, Colombia; Clínica Universidad de La Sabana, Chía, Colombia.
| | - A Bastidas
- Universidad de La Sabana, Chía, Colombia
| | - I Martín-Loeches
- St James's University Hospital, Multidisciplinary Intensive Care Research Organization (MICRO), Trinity Centre for Health Sciences, Department of Anaesthesia and Critica Care, Dublin, Ireland
| | - E Díaz
- ICU Complejo Hospitalario Parc Taulí/UAB, Sabadell, Spain
| | - B Suberviola
- ICU Hospital Universitario Marqués de Valdecilla, Santander, Spain
| | - G Moreno
- ICU Hospital Universitario de Tarragona Joan XXIII, Tarragona, Spain
| | - M Bodí
- ICU Hospital Universitario de Tarragona Joan XXIII, Tarragona, Spain; IISPV/URV/CIBERES, Tarragona, Spain
| | - M Nieto
- ICU Hospital Clínico San Carlos, Madrid, Spain
| | - A Estella
- ICU Hospital de Jerez, Jerez de la Frontera, Spain
| | - J Sole-Violán
- ICU Hospital Universitario Dr. Negrín, Las Palmas de Gran Canaria, Spain
| | - D Curcio
- Departamento de Enfermedades Infecciosas, Universidad de Buenos Aires, Argentina
| | - E Papiol
- ICU Hospital Univseritario Vall d'Hebron, Barcelona, Spain
| | - J Guardiola
- University of Louisville and Robley Rex VA Medical Center, Division of Pulmonary, Critical Care and Sleep Medicine, Louisville, KY, United States
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El-Qutob D, Nieto M, Alvarez-Arroyo L, Carrera-Hueso F. Is there any effect of flu vaccine on the SARS-CoV-2 infected patients? Vacunas (English Edition) 2022. [PMCID: PMC9374318 DOI: 10.1016/j.vacune.2022.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Objectives On 11 March, WHO declared a global pandemic caused by a new virus of the family Coronaviridae that has since been called SARS-CoV-2. COVID-19 does not have specific antiviral drug treatment currently. There are currently more than one hundred research projects into vaccines against SARS-CoV-2 worldwide, and 17 of them are already being tested on humans, according to the WHO. Until we have an effective vaccine, the possible preventive effect of flu vaccine for SARS-CoV-2 infection based on cross-reactivity has been postulated. Our objective was to analyse the effect of vaccination against flu virus in the season prior to the COVID-19 pandemic in our hospitalized SARS-CoV-2 infected patients. Methods We performed a retrospective observational cohort study of patients admitted to hospital with SARS-CoV2 infection. We analysed the differences between patients who had received or had not the flu vaccination for the 2019–2020 season. Results We found no significant differences (p = 0.09) in patients who died (43 in total), of whom 23 (21.5%) were vaccinated against the flu and 20 (13.5%) were not. In mortality, we obtained an adjusted OR = 0.873 (95% CI: 0.294–2.083), and about the success of health care the adjusted OR was 1.447 (95% CI: 0.610–3.430). Conclusions Flu vaccination in patients admitted for SARS-CoV-2 infection had neither a beneficial nor a harmful effect on the clinical courses or outcomes of patients admitted to an European hospital.
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El-Qutob D, Alvarez-Arroyo L, Barreda I, Nieto M, Pin M, Poveda-Andrés JL, Carrera-Hueso FJ. High incidence of pulmonary thromboembolism in hospitalized SARS-CoV-2 infected patients despite thrombo-prophylaxis. Heart Lung 2022; 53:77-82. [PMID: 35180507 PMCID: PMC8823955 DOI: 10.1016/j.hrtlng.2022.02.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 02/02/2022] [Accepted: 02/04/2022] [Indexed: 01/02/2023]
Abstract
Background Objectives Methods Results Conclusion
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Affiliation(s)
- D El-Qutob
- Unit of Allergy, Universitary Hospital of La Plana in Vila-Real, Carretera Vila-Real-Burriana Km. 0.5 Vila-Real Castellon 12540, Spain.
| | - L Alvarez-Arroyo
- Service of Pharmacy, Universitary Hospital of La Plana in Vila-Real, Spain; Doctoral Program of Pharmacy, Universitary of Granada, Spain
| | - I Barreda
- Section of Neurophysiology, Universitary Hospital of La Plana in Vila-Real, Spain
| | - M Nieto
- Unit of Allergy, Universitary Hospital of La Plana in Vila-Real, Carretera Vila-Real-Burriana Km. 0.5 Vila-Real Castellon 12540, Spain
| | - M Pin
- Unit of Nephrology, Universitary Hospital of La Plana in Vila-Real, Spain
| | | | - F J Carrera-Hueso
- Service of Pharmacy, Universitary Hospital of La Plana in Vila-Real, Spain
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Proaños NJ, Reyes LF, Bastidas A, Martín-Loeches I, Díaz E, Suberviola B, Moreno G, Bodí M, Nieto M, Estella A, Sole-Violán J, Curcio D, Papiol E, Guardiola J, Rodríguez A. Prior influenza vaccine is not a risk factor for bacterial coinfection in patients admitted to the ICU due to severe influenza. Med Intensiva 2021; 46:S0210-5691(21)00118-2. [PMID: 34175139 DOI: 10.1016/j.medin.2021.05.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 05/01/2021] [Accepted: 05/22/2021] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To determine whether the prior usage of the flu vaccine is a risk factor for bacterial co-infection in patients with severe influenza. DESIGN This was a retrospective observational cohort study of subjects admitted to the ICU. A propensity score matching, and logistic regression adjusted for potential confounders were carried out to evaluate the association between prior influenza vaccination and bacterial co-infection. SETTINGS 184 ICUs in Spain due to severe influenza. PATIENTS Patients included in the Spanish prospective flu registry. INTERVENTIONS Flu vaccine prior to the hospital admission. RESULTS A total of 4175 subjects were included in the study. 489 (11.7%) received the flu vaccine prior to develop influenza infection. Prior vaccinated patients were older 71 [61-78], and predominantly male 65.4%, with at least one comorbid condition 88.5%. Prior vaccination was not associated with bacterial co-infection in the logistic regression model (OR: 1.017; 95%CI 0.803-1.288; p=0.885). After matching, the average treatment effect of prior influenza vaccine on bacterial co-infection was not statistically significant when assessed by propensity score matching (p=0.87), nearest neighbor matching (p=0.59) and inverse probability weighting (p=0.99). CONCLUSIONS No association was identified between prior influenza vaccine and bacterial coinfection in patients admitted to the ICU due to severe influenza. Post influenza vaccination studies are necessary to continue evaluating the possible benefits.
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Affiliation(s)
| | - L F Reyes
- Universidad de La Sabana, Chía, Colombia; Clínica Universidad de La Sabana, Chía, Colombia.
| | - A Bastidas
- Universidad de La Sabana, Chía, Colombia
| | - I Martín-Loeches
- St James's University Hospital, Multidisciplinary Intensive Care Research Organization (MICRO), Trinity Centre for Health Sciences, Department of Anaesthesia and Critica Care, Dublin, Ireland
| | - E Díaz
- ICU Complejo Hospitalario Parc Taulí/UAB, Sabadell, Spain
| | - B Suberviola
- ICU Hospital Universitario Marqués de Valdecilla, Santander, Spain
| | - G Moreno
- ICU Hospital Universitario de Tarragona Joan XXIII, Tarragona, Spain
| | - M Bodí
- ICU Hospital Universitario de Tarragona Joan XXIII, Tarragona, Spain; IISPV/URV/CIBERES, Tarragona, Spain
| | - M Nieto
- ICU Hospital Clínico San Carlos, Madrid, Spain
| | - A Estella
- ICU Hospital de Jerez, Jerez de la Frontera, Spain
| | - J Sole-Violán
- ICU Hospital Universitario Dr. Negrín, Las Palmas de Gran Canaria, Spain
| | - D Curcio
- Departamento de Enfermedades Infecciosas, Universidad de Buenos Aires, Argentina
| | - E Papiol
- ICU Hospital Univseritario Vall d'Hebron, Barcelona, Spain
| | - J Guardiola
- University of Louisville and Robley Rex VA Medical Center, Division of Pulmonary, Critical Care and Sleep Medicine, Louisville, KY, United States
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Bragg-Gonzalo L, De León Reyes NS, Nieto M. Genetic and activity dependent-mechanisms wiring the cortex: Two sides of the same coin. Semin Cell Dev Biol 2021; 118:24-34. [PMID: 34030948 DOI: 10.1016/j.semcdb.2021.05.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 04/27/2021] [Accepted: 05/08/2021] [Indexed: 01/17/2023]
Abstract
The cerebral cortex is responsible for the higher-order functions of the brain such as planning, cognition, or social behaviour. It provides us with the capacity to interact with and transform our world. The substrates of cortical functions are complex neural circuits that arise during development from the dynamic remodelling and progressive specialization of immature undefined networks. Here, we review the genetic and activity-dependent mechanisms of cortical wiring focussing on the importance of their interaction. Cortical circuits emerge from an initial set of neuronal types that engage in sequential forms of embryonic and postnatal activity. Such activities further complement the cells' genetic programs, increasing neuronal diversity and modifying the electrical properties while promoting selective connectivity. After a temporal window of enhanced plasticity, the main features of mature circuits are established. Failures in these processes can lead to neurodevelopmental disorders whose treatment remains elusive. However, a deeper dissection of cortical wiring will pave the way for innovative therapies.
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Affiliation(s)
- L Bragg-Gonzalo
- Department of Cellular and Molecular Biology, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas, (CNB-CSIC) Campus de Cantoblanco, Darwin 3, 28049 Madrid, Spain
| | - N S De León Reyes
- Department of Cellular and Molecular Biology, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas, (CNB-CSIC) Campus de Cantoblanco, Darwin 3, 28049 Madrid, Spain; Instituto de Neurociencias de Alicante, CSIC-UMH, 03550 San Juan de Alicante, Spain
| | - M Nieto
- Department of Cellular and Molecular Biology, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas, (CNB-CSIC) Campus de Cantoblanco, Darwin 3, 28049 Madrid, Spain.
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7
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Ramakrishnan A, Joseph SS, Reynolds ND, Poncet D, Maciel M, Nunez G, Espinoza N, Nieto M, Castillo R, Royal JM, Poole S, McVeigh A, Rollenhagen JE, Heinrichs J, Prouty MG, Simons MP, Renauld-Mongénie G, Savarino SJ. Evaluation of the immunogenicity and protective efficacy of a recombinant CS6-based ETEC vaccine in an Aotus nancymaae CS6 + ETEC challenge model. Vaccine 2020; 39:487-494. [PMID: 33357957 DOI: 10.1016/j.vaccine.2020.12.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 11/30/2020] [Accepted: 12/09/2020] [Indexed: 10/22/2022]
Abstract
Colonization factors or Coli surface antigens (CFs or CS) are important virulence factors of Enterotoxigenic E. coli (ETEC) that mediate intestinal colonization and accordingly are targets of vaccine development efforts. CS6 is a highly prevalent CF associated with symptomatic ETEC infection both in endemic populations and amongst travelers. In this study, we used an Aotus nancymaae non-human primate ETEC challenge model with a CS6 + ETEC strain, B7A, to test the immunogenicity and protective efficacy (PE) of a recombinant CS6-based subunit vaccine. Specifically, we determined the ability of dscCssBA, the donor strand complemented recombinant stabilized fusion of the two subunits of the CS6 fimbriae, CssA and CssB, to elicit protection against CS6 + ETEC mediated diarrhea when given intradermally (ID) with the genetically attenuated double mutant heat-labile enterotoxin LT(R192G/L211A) (dmLT). ID vaccination with dscCssBA + dmLT induced strong serum antibody responses against CS6 and LT. Importantly, vaccination with dscCssBA + dmLT resulted in no observed diarrheal disease (PE = 100%, p = 0.03) following B7A challenge as compared to PBS immunized animals, with an attack rate of 62.5%. These data demonstrate the potential role that CS6 may play in ETEC infection and that recombinant dscCssBA antigen can provide protection against challenge with the homologous CS6 + ETEC strain, B7A, in the Aotus nancymaae diarrheal challenge model. Combined, these data indicate that CS6, and more specifically, a recombinant engineered derivative should be considered for further clinical development.
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Affiliation(s)
- A Ramakrishnan
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, 615 N Wolfe St, Baltimore, MD 21205, USA
| | - S S Joseph
- Henry M Jackson Foundation for the Advancement of Military Medicine, 6720 Rockledge Drive, Bethesda, MD 20817, USA
| | - N D Reynolds
- Department of Bacteriology, Naval Medical Research Unit No. 6, Venezuela Ave. Block 36, Bellavista, Callao, Peru
| | - D Poncet
- Sanofi Pasteur, Research and External Innovation, 1541 Av. Marcel Mérieux, 69280 Marcy L'Etoile
| | - M Maciel
- Henry M Jackson Foundation for the Advancement of Military Medicine, 6720 Rockledge Drive, Bethesda, MD 20817, USA
| | - G Nunez
- Department of Bacteriology, Naval Medical Research Unit No. 6, Venezuela Ave. Block 36, Bellavista, Callao, Peru
| | - N Espinoza
- Department of Bacteriology, Naval Medical Research Unit No. 6, Venezuela Ave. Block 36, Bellavista, Callao, Peru
| | - M Nieto
- Department of Bacteriology, Naval Medical Research Unit No. 6, Venezuela Ave. Block 36, Bellavista, Callao, Peru
| | - R Castillo
- Department of Bacteriology, Naval Medical Research Unit No. 6, Venezuela Ave. Block 36, Bellavista, Callao, Peru
| | - J M Royal
- Department of Veterinary Services, Naval Medical Research Unit No. 6, Venezuela Ave. Block 36, Bellavista, Callao, Peru
| | - S Poole
- Henry M Jackson Foundation for the Advancement of Military Medicine, 6720 Rockledge Drive, Bethesda, MD 20817, USA
| | - A McVeigh
- Henry M Jackson Foundation for the Advancement of Military Medicine, 6720 Rockledge Drive, Bethesda, MD 20817, USA
| | - J E Rollenhagen
- Henry M Jackson Foundation for the Advancement of Military Medicine, 6720 Rockledge Drive, Bethesda, MD 20817, USA
| | | | - M G Prouty
- Enteric Diseases Department, Naval Medical Research Center, 503 Robert Grant Ave, Silver Spring, MD 20910, USA.
| | - M P Simons
- Department of Bacteriology, Naval Medical Research Unit No. 6, Venezuela Ave. Block 36, Bellavista, Callao, Peru
| | - G Renauld-Mongénie
- Sanofi Pasteur, Research and External Innovation, 1541 Av. Marcel Mérieux, 69280 Marcy L'Etoile
| | - S J Savarino
- Enteric Diseases Department, Naval Medical Research Center, 503 Robert Grant Ave, Silver Spring, MD 20910, USA
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De León Reyes NS, Mederos S, Varela I, Weiss LA, Perea G, Galazo MJ, Nieto M. Transient callosal projections of L4 neurons are eliminated for the acquisition of local connectivity. Nat Commun 2019; 10:4549. [PMID: 31591398 PMCID: PMC6779895 DOI: 10.1038/s41467-019-12495-w] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 09/15/2019] [Indexed: 12/11/2022] Open
Abstract
Interhemispheric axons of the corpus callosum (CC) facilitate the higher order functions of the cerebral cortex. According to current views, callosal and non-callosal fates are determined early after a neuron’s birth, and certain populations, such as cortical layer (L) 4 excitatory neurons of the primary somatosensory (S1) barrel, project only ipsilaterally. Using a novel axonal-retrotracing strategy and GFP-targeted visualization of Rorb+ neurons, we instead demonstrate that L4 neurons develop transient interhemispheric axons. Locally restricted L4 connectivity emerges when exuberant contralateral axons are refined in an area- and layer-specific manner during postnatal development. Surgical and genetic interventions of sensory circuits demonstrate that refinement rates depend on distinct inputs from sensory-specific thalamic nuclei. Reductions in input-dependent refinement result in mature functional interhemispheric hyperconnectivity, demonstrating the plasticity and bona fide callosal potential of L4 neurons. Thus, L4 neurons discard alternative interhemispheric circuits as instructed by thalamic input. This may ensure optimal wiring. It is traditionally believed that callosal and non-callosal fates are determined early after a neuron’s birth, and that cortical layer (L) 4 excitatory neurons of the primary somatosensory (S1) barrel cortex project only ipsilaterally. However, here authors demonstrate, using a novel axonal retrotracing strategy, that L4 neurons develop transient interhemispheric axons that are refined in an area- and layer-specific manner during postnatal development.
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Affiliation(s)
- N S De León Reyes
- Department of Cellular and Molecular Biology, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CNB-CSIC), Campus de Cantoblanco, Darwin 3, 28049, Madrid, Spain
| | - S Mederos
- Instituto Cajal, CSIC. Av. Doctor Arce, 37, 28002, Madrid, Spain
| | - I Varela
- Department of Cellular and Molecular Biology, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CNB-CSIC), Campus de Cantoblanco, Darwin 3, 28049, Madrid, Spain
| | - L A Weiss
- Department of Cellular and Molecular Biology, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CNB-CSIC), Campus de Cantoblanco, Darwin 3, 28049, Madrid, Spain
| | - G Perea
- Instituto Cajal, CSIC. Av. Doctor Arce, 37, 28002, Madrid, Spain
| | - M J Galazo
- Department of Cell and Molecular Biology and Tulane Brain Institute, Tulane University, 6400 Freret Street, Percival Stern Hall suite 2000, New Orleans, LA, 70118, USA
| | - M Nieto
- Department of Cellular and Molecular Biology, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CNB-CSIC), Campus de Cantoblanco, Darwin 3, 28049, Madrid, Spain.
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Bartoll E, Nieto M, Selva B, Badillo R, Pereira G, Uixera S, Nieto A, Mazón Á. Validation of a Spanish version of the EuroPrevall Food Allergy Quality of Life Questionnaire-Parental Form. Allergol Immunopathol (Madr) 2018; 46:82-86. [PMID: 29033200 DOI: 10.1016/j.aller.2017.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Revised: 06/07/2017] [Accepted: 06/21/2017] [Indexed: 10/18/2022]
Abstract
BACKGROUND Food allergy can have a major impact on quality of life of children and their parents. Questionnaires have been developed to measure the impact of this disorder. We aimed to validate the EuroPrevall questionnaire on Food Allergy-Quality of Life Questionnaire, Parent Form (FAQLQ-PF) and the Food Allergy Independent Measure (FAIM), translated into Spanish. METHODS The internal consistency of the FAQLQ-PF and the FAIM, translated into Spanish (Spain) and completed by the parents of 74 children with IgE-mediated food allergy, were evaluated with Cronbach's alpha. To test construct validity of the FAQLQ-PF, its correlation with the FAIM was also calculated. To assess their discriminant validity, we compared the values of both depending on the number of offending foods and for children with and without anaphylaxis. RESULTS The values of Cronbach's alpha for the three domains in the FAQLQ-PF were over 0.9. The value of alpha for FAIM questions was below 0.6, which was attributed to the wording of one question. When this question was removed, alpha increased to over 0.70. There was a significant correlation between the FAQLQ-PF score and the FAIM. There were significantly poorer FAQLQ-PF scores in children with more food allergies and worse FAIM in those who had had anaphylaxis. CONCLUSIONS The Spanish version of the FAQLQ-PF had a good internal consistency, good construct validity and validity to discriminate patients with more food allergies and anaphylaxis. It can be used as a tool to evaluate and monitor the quality of life in families with food allergic children.
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Affiliation(s)
- M. Nieto
- Dept. of Nuclear, Plasma and Radiological Engineering, University of Illinois at Urbana-Champaign, 103 S. Goodwin Ave. Urbana, IL 61801, Ph: (217)333-6291, Fax: (217)333-2906
| | - D. N. Ruzic
- Dept. of Nuclear, Plasma and Radiological Engineering, University of Illinois at Urbana-Champaign, 103 S. Goodwin Ave. Urbana, IL 61801, Ph: (217)333-6291, Fax: (217)333-2906
| | - J. P. Allain
- NPL Associates, Inc. 912 W. Armory Ave. Champaign, IL 61821
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Boglione M, Reusmann A, Cadario M, Giuseppucci C, Botto H, Nieto M, Barrenechea M. [Surgical treatment of tracheal stenosis. A 11-year report in a pediatric hospital]. Cir Pediatr 2017; 30:77-82. [PMID: 28857529] [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] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVES To report our experience in the surgical treatment of patients having acquired and congenital tracheal stenosis. MATERIAL AND METHODS Fifty eight patients with tracheal stenosis were surgically treated between July 2005 and May 2016, 29 were females and 29 were males. Thirty patients had acquired stenosis and 28 had congenital stenosis. RESULTS Five to 12 rings were resected (median 5) in 26 patients, in 2 cartilage was grafted in the anterior wall, in another carinostomy was performed, and in the remaining, the trachea was replaced using an aortic cryopreserved graft. In those with congenital stenosis, 14 patients underwent slide technique; in eleven, 3 to 6 rings were resected (median 5); in 3 a patch was grafted in the anterior tracheal wall. Seven patients died: 2 with acquired stenosis and 5 with congenital stenosis. Global survival was 88% (28 of 30 patients with acquired stenosis and 23 of 28 with congenital). From 28 living patients operated on due to acquired stenosis, 26 are asymptomatic, one presents graft stenosis, and one has a stoma in the aortic graft. From 23 living patients operated on due to congenital stenosis, 20 remain asymptomatic and 3 have tracheal stents placed on. CONCLUSIONS Surgical treatment of acquired stenosis is easier and presents less severe complications. Congenital stenosis often requires more than one procedure to control the disease, and presents a higher mortality rate.
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Affiliation(s)
- M Boglione
- Servicios de Cirugía General y Endoscopia Respiratoria. Hospital de Pediatría Prof. Dr. J.P. Garrahan. Ciudad Autónoma de Buenos Aires. Argentina
| | - A Reusmann
- Servicios de Cirugía General y Endoscopia Respiratoria. Hospital de Pediatría Prof. Dr. J.P. Garrahan. Ciudad Autónoma de Buenos Aires. Argentina
| | - M Cadario
- Servicios de Cirugía General y Endoscopia Respiratoria. Hospital de Pediatría Prof. Dr. J.P. Garrahan. Ciudad Autónoma de Buenos Aires. Argentina
| | - C Giuseppucci
- Servicios de Cirugía General y Endoscopia Respiratoria. Hospital de Pediatría Prof. Dr. J.P. Garrahan. Ciudad Autónoma de Buenos Aires. Argentina
| | - H Botto
- SServicios de Cirugía General y Endoscopia Respiratoria. Hospital de Pediatría Prof. Dr. J.P. Garrahan. Ciudad Autónoma de Buenos Aires. Argentina
| | - M Nieto
- Servicios de Cirugía General y Endoscopia Respiratoria. Hospital de Pediatría Prof. Dr. J.P. Garrahan. Ciudad Autónoma de Buenos Aires. Argentina
| | - M Barrenechea
- Servicios de Cirugía General y Endoscopia Respiratoria. Hospital de Pediatría Prof. Dr. J.P. Garrahan. Ciudad Autónoma de Buenos Aires. Argentina
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Rello J, Nieto M, Solé-Violán J, Wan Y, Gao X, Solem C, De Salas-Cansado M, Mesa F, Charbonneau C, Chastre J. Nosocomial pneumonia caused by methicillin-resistant Staphylococcus aureus treated with linezolid or vancomycin: A secondary economic analysis of resource use from a Spanish perspective. Med Intensiva 2016; 40:474-482. [DOI: 10.1016/j.medin.2016.01.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Revised: 01/12/2016] [Accepted: 01/26/2016] [Indexed: 12/29/2022]
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Campillo E, Ricarte JJ, Ros L, Nieto M, Latorre JM. Effects of the Visual and Auditory Components of a Brief Mindfulness Intervention on Mood State and on Visual and Auditory Attention and Memory Task Performance. Curr Psychol 2016. [DOI: 10.1007/s12144-016-9519-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Nieto M, Sanchez M, Bringas M, Requesens M, García I, Del Pino A, Reguillo F, Fernandez C. Effectiveness of a prevention programme of surgical site infection after major heart surgery. Intensive Care Med Exp 2015. [PMCID: PMC4797946 DOI: 10.1186/2197-425x-3-s1-a119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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15
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Álvarez-Lerma F, Grau S, López C, Jiménez JD, Trasmonte MV, Nieto M, Parra G, Herrero E. [Patients treated with micafungin during their stay in intensive care unit]. Med Intensiva 2015; 39:467-76. [PMID: 25798955 DOI: 10.1016/j.medin.2014.10.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2014] [Revised: 10/27/2014] [Accepted: 10/29/2014] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To determine the reasons of prescription, the characteristics of patients and factors that affected the outcome of critically ill patients treated with micafungin (MCF) during their stay in Spanish ICUs. MATERIAL AND METHODS Observational, retrospective and multicenter study. Patients admitted to the ICU between March 2011 and October 2012 (20-month period) treated with MCF for any reason were included in the study. Severity of patients at the beginning of treatment was measured with the APACHE II, SOFA, Child-Pugh and MELD scores. Reasons for the use of MCF were classified as prophylaxis, preemptive treatment, empirical treatment and directed treatment. Continuous variables are expressed as mean and standard deviation or median, and categorical variables as percentages. A multivariate analysis was performed to identify variables related to intra-ICU mortality. RESULTS The study population included 139 patients admitted to 19 Spanish ICUs, with a mean age of 57.3 (17.1) years, 89 (64%) men, with surgical (53.2%) and/or medical (44.6%) conditions, APACHE II score of 20.6 (7.7) and SOFA score of 8.4 (4.3), with 84.2% of patients requiring mechanical ventilation, 59% parenteral nutrition, 37.4% extrarenal depuration procedures and 37.4% treatment with steroids. MCF was indicated as empirical treatment of a proven infection in 51 (36.7%) cases, pre-emptive treatment in 50 (36%) especially as a result of the application of the Candida score (32 cases), directed treatment of fungal infection in 23 (16.5%) and as prophylactic treatment in 15 (10.8%) cases. In 108 (77%) cases, a daily dose of 100mg was administered, with a loading dose in only 9 cases (6.5%). The mean duration of treatment was 13.1 (13) days. A total of 59 (42.4%) patients died during their stay in the ICU and 16 after ICU discharge (hospital mortality 53.9%). Independent risk factors for intra-ICU mortality were the Child-Pugh score (OR 1.45, 95% CI 1.162-1.813; P=.001) and the MELD score (OR 1.05, 95% CI 1.011-1.099; P=.014). CONCLUSIONS MCF is usually administered at a dose of 100mg/day, without loading dose and in 72.7% of cases as pre-emptive or empirical treatment. Factors that better predicted mortality were indicators of liver insufficiency at the time of starting treatment.
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Affiliation(s)
- F Álvarez-Lerma
- Servicio de Medicina Intensiva, Hospital del Mar, Parc de Salut Mar, Barcelona, España.
| | - S Grau
- Servicio de Farmacia, Hospital del Mar, Parc de Salut Mar, Barcelona, España
| | - C López
- Servicio de Medicina Intensiva, Hospital Vall d'Hebrón, Barcelona, España
| | - J D Jiménez
- Servicio de Medicina Intensiva, Hospital Don Benito, Villanueva Badajoz, España
| | - M V Trasmonte
- Servicio de Medicina Intensiva, Hospital Infanta Cristina, Badajoz, España
| | - M Nieto
- Servicio de Medicina Intensiva, Hospital Clínico San Carlos, Madrid, España
| | - G Parra
- Servicio de Medicina Intensiva, Hospital La Vega, Murcia, España
| | - E Herrero
- Servicio de Medicina Intensiva, Hospital Torrevieja Salud, Torrevieja, Alicante, España
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Lopez Martin C, Arenas J, Nieto M, Robustillo A, Morillo R, Aguilar E, Rios E, Garrido M, Faus V, Tortajada B. CP-067 Use of validated care quality indicators to identify improvements in hiv pharmaceutical care:. Eur J Hosp Pharm 2015. [DOI: 10.1136/ejhpharm-2015-000639.63] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Nieto M, Sanchez M, Busto B, Morales E, Garcia I, Manuel C, Cano L, Fernandez C. DEVELOPMENT AND VALIDATION OF A MULTIVARIABLE PREDICTION MODEL FOR MEDIASTINITIS POSTSTERNOTOMY. Intensive Care Med Exp 2015. [PMCID: PMC4796988 DOI: 10.1186/2197-425x-3-s1-a955] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Solé Violan J, Ferrer Agüero J, Sádaba B, Sancho S, Zaragoza R, Luque P, Nieto M, López M, García F, Hernández C, Azanza J. Pharmacokinetics of meropenem during continuous renal replacement therapy in critically ill patients. Crit Care 2014. [PMCID: PMC4069441 DOI: 10.1186/cc13593] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Nieto M, Ezpeleta G, Esteban V, Alava J, Camara M, Munain JLD, Cisterna R. P3.280 Gentamicin Susceptibility Profile of Neisseria Gonorrhoeae Clinical Strains Isolated in Bilbao (Spain) During 2011 and 2012. Br J Vener Dis 2013. [DOI: 10.1136/sextrans-2013-051184.0736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Peinado J, Serrano M, Nieto M, Sánchez J, Medel P, Mateos G. The effects of gender and castration of females on performance and carcass and meat quality of heavy pigs destined to the dry-cured industry. Meat Sci 2012; 90:715-20. [DOI: 10.1016/j.meatsci.2011.11.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2009] [Revised: 10/25/2011] [Accepted: 11/02/2011] [Indexed: 10/15/2022]
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Rodríguez A, Alvarez-Rocha L, Sirvent JM, Zaragoza R, Nieto M, Arenzana A, Luque P, Socías L, Martín M, Navarro D, Camarena J, Lorente L, Trefler S, Vidaur L, Solé-Violán J, Barcenilla F, Pobo A, Vallés J, Ferri C, Martín-Loeches I, Díaz E, López D, López-Pueyo MJ, Gordo F, del Nogal F, Marqués A, Tormo S, Fuset MP, Pérez F, Bonastre J, Suberviola B, Navas E, León C. [Recommendations of the Infectious Diseases Work Group (GTEI) of the Spanish Society of Intensive and Critical Care Medicine and Coronary Units (SEMICYUC) and the Infections in Critically Ill Patients Study Group (GEIPC) of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC) for the diagnosis and treatment of influenza A/H1N1 in seriously ill adults admitted to the Intensive Care Unit]. Med Intensiva 2012; 36:103-37. [PMID: 22245450 DOI: 10.1016/j.medin.2011.11.020] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2011] [Accepted: 11/20/2011] [Indexed: 02/08/2023]
Abstract
The diagnosis of influenza A/H1N1 is mainly clinical, particularly during peak or seasonal flu outbreaks. A diagnostic test should be performed in all patients with fever and flu symptoms that require hospitalization. The respiratory sample (nasal or pharyngeal exudate or deeper sample in intubated patients) should be obtained as soon as possible, with the immediate start of empirical antiviral treatment. Molecular methods based on nucleic acid amplification techniques (RT-PCR) are the gold standard for the diagnosis of influenza A/H1N1. Immunochromatographic methods have low sensitivity; a negative result therefore does not rule out active infection. Classical culture is slow and has low sensitivity. Direct immunofluorescence offers a sensitivity of 90%, but requires a sample of high quality. Indirect methods for detecting antibodies are only of epidemiological interest. Patients with A/H1N1 flu may have relative leukopenia and elevated serum levels of LDH, CPK and CRP, but none of these variables are independently associated to the prognosis. However, plasma LDH> 1500 IU/L, and the presence of thrombocytopenia <150 x 10(9)/L, could define a patient population at risk of suffering serious complications. Antiviral administration (oseltamivir) should start early (<48 h from the onset of symptoms), with a dose of 75 mg every 12h, and with a duration of at least 7 days or until clinical improvement is observed. Early antiviral administration is associated to improved survival in critically ill patients. New antiviral drugs, especially those formulated for intravenous administration, may be the best choice in future epidemics. Patients with a high suspicion of influenza A/H1N1 infection must continue with antiviral treatment, regardless of the negative results of initial tests, unless an alternative diagnosis can be established or clinical criteria suggest a low probability of influenza. In patients with influenza A/H1N1 pneumonia, empirical antibiotic therapy should be provided due to the possibility of bacterial coinfection. A beta-lactam plus a macrolide should be administered as soon as possible. The microbiological findings and clinical or laboratory test variables may decide withdrawal or not of antibiotic treatment. Pneumococcal vaccination is recommended as a preventive measure in the population at risk of suffering severe complications. Although the use of moderate- or low-dose corticosteroids has been proposed for the treatment of influenza A/H1N1 pneumonia, the existing scientific evidence is not sufficient to recommend the use of corticosteroids in these patients. The treatment of acute respiratory distress syndrome in patients with influenza A/H1N1 must be based on the use of a protective ventilatory strategy (tidal volume <10 ml / kg and plateau pressure <35 mmHg) and positive end-expiratory pressure set to high patient lung mechanics, combined with the use of prone ventilation, muscle relaxation and recruitment maneuvers. Noninvasive mechanical ventilation cannot be considered a technique of choice in patients with acute respiratory distress syndrome, though it may be useful in experienced centers and in cases of respiratory failure associated with chronic obstructive pulmonary disease exacerbation or heart failure. Extracorporeal membrane oxygenation is a rescue technique in refractory acute respiratory distress syndrome due to influenza A/H1N1 infection. The scientific evidence is weak, however, and extracorporeal membrane oxygenation is not the technique of choice. Extracorporeal membrane oxygenation will be advisable if all other options have failed to improve oxygenation. The centralization of extracorporeal membrane oxygenation in referral hospitals is recommended. Clinical findings show 50-60% survival rates in patients treated with this technique. Cardiovascular complications of influenza A/H1N1 are common. Such problems may appear due to the deterioration of pre-existing cardiomyopathy, myocarditis, ischemic heart disease and right ventricular dysfunction. Early diagnosis and adequate monitoring allow the start of effective treatment, and in severe cases help decide the use of circulatory support systems. Influenza vaccination is recommended for all patients at risk. This indication in turn could be extended to all subjects over 6 months of age, unless contraindicated. Children should receive two doses (one per month). Immunocompromised patients and the population at risk should receive one dose and another dose annually. The frequency of adverse effects of the vaccine against A/H1N1 flu is similar to that of seasonal flu. Chemoprophylaxis must always be considered a supplement to vaccination, and is indicated in people at high risk of complications, as well in healthcare personnel who have been exposed.
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Affiliation(s)
- A Rodríguez
- Servicio de Medicina Intensiva, Hospital Universitario de Tarragona Joan XXIII, IISPV - URV - CIBER Enfermedades Respiratorias, Tarragona, España.
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Franco A, Knafo S, Banon-Rodriguez I, Merino-Serrais P, Fernaud-Espinosa I, Nieto M, Garrido JJ, Esteban JA, Wandosell F, Anton IM. WIP is a negative regulator of neuronal maturation and synaptic activity. ACTA ACUST UNITED AC 2011; 22:1191-202. [PMID: 21810783 DOI: 10.1093/cercor/bhr199] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Wiskott-Aldrich syndrome protein (WASP) -interacting protein (WIP) is an actin-binding protein involved in the regulation of actin polymerization in cells, such as fibroblasts and lymphocytes. Despite its recognized function in non-neuronal cells, the role of WIP in the central nervous system has not been examined previously. We used WIP-deficient mice to examine WIP function both in vivo and in vitro. We report here that WIP(-)(/-) hippocampal neurons exhibit enlargement of somas as well as overgrowth of neuritic and dendritic branches that are more evident in early developmental stages. Dendritic arborization and synaptogenesis, which includes generation of postsynaptic dendritic spines, are actin-dependent processes that occur in parallel at later stages. WIP deficiency also increases the amplitude and frequency of miniature excitatory postsynaptic currents, suggesting that WIP(-)(/-) neurons have more mature synapses than wild-type neurons. These findings reveal WIP as a previously unreported regulator of neuronal maturation and synaptic activity.
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Affiliation(s)
- A Franco
- Centro Nacional de Biotecnología (CNB-CSIC), 28049 Madrid, Spain
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Nieto M, Hortal J, Martínez-Maza C, Morales J, Rodríguez J. Variaciones en la riqueza de macromamíferos de España durante el Neógeno. GRAELLSIA 2011. [DOI: 10.3989/graellsia.2003.v59.i2-3.248] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Garro HA, Juri Ayub M, Nieto M, Lucero Estrada C, Pungitore CR, Tonn CE. The trypanocidal activity of the alkaloid oliverine involves inhibition of DNA synthesis. Cell Mol Biol (Noisy-le-grand) 2010; 56 Suppl:OL1318-OL1323. [PMID: 20937218] [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] [Received: 02/12/2010] [Accepted: 06/01/2010] [Indexed: 05/30/2023]
Abstract
The Trypanosoma cruzi parasite is an etiologic agent of the American trypanosomiasis called Chagas disease. This pathology affects more than 24 million persons and represents one of the most important public health problems in Latin America. Taking into account this, it is necessary the search of new antitrypanosomal agents that show a major level of efficacy and minor indexes of toxicity in affected patients. Vast source of them are the natural products from plants with enormous structural diversity. A particular type of these compounds is represented by aporphinoid alkaloids. In our experiments, anonaine (2), oliverine (3) and guatterine (5) displayed antitrypanosomal activity. The compound 3 showed the most important activity with an IC50 = 12.00 ± 0.36 μM. Its mechanism of action may include inhibition of DNA synthesis.
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Affiliation(s)
- H A Garro
- INTEQUI-CONICET, Facultad de Quimica, Bioquimica y Farmacia, Universidad Nacional de San Luis (UNSL), Chacabuco y Pedernera, San Luis, Argentina
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Palomar M, Rodríguez P, Nieto M, Sancho S. [Prevention of nosocomial infection in critical patients]. Med Intensiva 2010; 34:523-33. [PMID: 20510481 DOI: 10.1016/j.medin.2010.03.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2010] [Revised: 03/10/2010] [Accepted: 03/12/2010] [Indexed: 01/12/2023]
Affiliation(s)
- M Palomar
- Servicio de Medicina Intensiva, Hospital Universitario Vall d'Hebrón, Barcelona, España.
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Albillo J, Eaton K, Lázaro M, Peregrin E, Perez B, Ruberte A, Betancor D, Collazos R, Nieto M, Martín de Francisco L. P01-04 - A descriptive study of patients with bipolar affective disorder admitted in brief hospitalization unit, university hospital of la Princesa. Eur Psychiatry 2010. [DOI: 10.1016/s0924-9338(10)70209-1] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Sánchez del Río A, Campo R, Llach J, Pons V, Mreish G, Panadés A, Parra A, Nicolás D, Quintero E, Nieto M, Seoane A, Torra S, Pons V, Argüello L, Sala T, Pertejo V, Campo R, Brullett E, Junquera F, Puig-Divi V, Calvet X, Montserrat A. Variation among endoscopy units in the achievement of the standards of colonoscopic performance indicators. Hepatogastroenterology 2008; 55:1594-1599. [PMID: 19102349] [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: 05/27/2023]
Abstract
BACKGROUND/AIMS To assess the achievement of quality standards of colonoscopy at six endoscopy units. METHODOLOGY Three indicators were used to assess the quality of 1056 colonoscopies performed at six hospitals: cecal intubation; adequate colon cleansing; and removal and recovery of all detected polyps. Analyses were performed on the total number of colonoscopies and on colonoscopies in which polyps were actually detected. The accomplishment of each indicator and a global compound index of all three indicators, named the Problem Rate, were analyzed. Results from each endoscopy unit were compared to previously established standards. RESULTS Adequate colon cleansing was the most frequent problem for quality in all centers; adequate colon preparation was 67% (range 50 to 84%). The cecum was reached in 84% of all colonoscopies (range 76 to 90%). 75% of all patients (range 28. 79%) had all polyps excised and recovered. All centers had rates below standard for one or several indicators (p<0.01, all cases). Two of the participant hospitals had an overall problem rate above the estimated standard (p<0.01). CONCLUSIONS There is a significant variation in the achievement of quality standards of colonoscopy between endoscopy units. Colon cleansing is the most frequent quality problem for colonoscopy.
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Ibeas E, Miana M, Arroyo L, delasHeras N, Nieto M, Martin-Fernandez B, Lahera V, Cachofeiro V. EFFECT OF AMLODIPINE AND ATORVASTATIN ON PLASMA SPLA2 ACTIVITY AND VASCULAR EXPRESSION OF PPAR-ALPHA AND. ATHEROSCLEROSIS SUPP 2008. [DOI: 10.1016/s1567-5688(08)70986-3] [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: 11/27/2022]
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Allain JP, Nieto M, Hendricks MR, Plotkin P, Harilal SS, Hassanein A. IMPACT: a facility to study the interaction of low-energy intense particle beams with dynamic heterogeneous surfaces. Rev Sci Instrum 2007; 78:113105. [PMID: 18052463 DOI: 10.1063/1.2805677] [Citation(s) in RCA: 2] [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: 05/25/2023]
Abstract
The Interaction of Materials with Particles and Components Testing (IMPACT) experimental facility is furnished with multiple ion sources and in situ diagnostics to study the modification of surfaces undergoing physical, chemical, and electronic changes during exposure to energetic particle beams. Ion beams with energies in the range between 20 and 5000 eV can bombard samples at flux levels in the range of 10(10)-10(15) cm(-2) s(-1); parameters such as ion angle of incidence and exposed area are also controllable during the experiment. IMPACT has diagnostics that allow full characterization of the beam, including a Faraday cup, a beam imaging system, and a retarding field energy analyzer. IMPACT is equipped with multiple diagnostics, such as electron (Auger, photoelectron) and ion scattering spectroscopies that allow different probing depths of the sample to monitor compositional changes in multicomponent and/or layered targets. A unique real-time erosion diagnostic based on a dual quartz crystal microbalance measures deposition from an eroding surface with rates smaller than 0.01 nm/s, which can be converted to a sputter yield measurement. The monitoring crystal can be rotated and placed in the target position so that the deposited material on the quartz crystal oscillator surface can be characterized without transfer outside of the vacuum chamber.
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Affiliation(s)
- J P Allain
- Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, Illinois 60439, USA.
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García-Río L, Mejuto J, Nieto M, Pérez-Juste J, Pérez-Lorenzo M, Rodríguez-Dafonte P. Denitrosation of N-Nitrososulfonamide as Chemical Probe for Determination of Binding Constants to Cyclodextrins. Supramol Chem 2007. [DOI: 10.1080/10610270500231824] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- L. García-Río
- a University of Santiago, Department of Physical Chemistry, Faculty of Chemistry , Spain
| | - J.C. Mejuto
- b University of Vigo at Ourense, Department of Physical Chemistry, Faculty of Science , Spain
| | - M. Nieto
- b University of Vigo at Ourense, Department of Physical Chemistry, Faculty of Science , Spain
| | - J. Pérez-Juste
- b University of Vigo at Ourense, Department of Physical Chemistry, Faculty of Science , Spain
| | - M. Pérez-Lorenzo
- a University of Santiago, Department of Physical Chemistry, Faculty of Chemistry , Spain
| | - P. Rodríguez-Dafonte
- a University of Santiago, Department of Physical Chemistry, Faculty of Chemistry , Spain
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Vieta E, Cieza A, Stucki G, Chatterji S, Nieto M, Sánchez-Moreno J, Jaeger J, Grunze H, Ayuso-Mateos JL. Developing core sets for persons with bipolar disorder based on the International Classification of Functioning, Disability and Health. Bipolar Disord 2007; 9:16-24. [PMID: 17391346 DOI: 10.1111/j.1399-5618.2007.00322.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
INTRODUCTION Functioning is increasingly being taken into account when assessing the impact of bipolar disorder (BD) on the individual, as well as the effectiveness of treatments. With the International Classification of Functioning, Disability and Health (ICF), we can now rely on a globally agreed-upon framework and system for classifying the typical spectrum of problems in functioning, given the environmental context in which subjects live. ICF Core Sets are subgroups of ICF items selected to capture those aspects of functioning that are most likely to be affected by specific disorders. Within a given disorder, both Brief and Comprehensive Core Sets can be established to serve specific purposes. OBJECTIVE The aim of this paper is to outline the development process of the ICF Core Sets for BD. METHODS The final definition of ICF Core Sets for BD will be determined at an ICF Core-Sets Consensus Conference, which will integrate evidence from preliminary studies, namely (a) semi-structured interviews with people with BD in different countries, (b) a Delphi exercise with international experts participating and (c) a cross-sectional study. CONCLUSION ICF Core Sets are being designed with the goal of providing useful standards for research, clinical practice and teaching. We believe that these ICF Core Sets for BD will stimulate research leading to improved understanding of functioning, disability and health in BD. Such research, we hope, will lead to interventions and accommodations to improve restoration and maintenance of functioning and minimise disability among people with BD throughout the world.
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Affiliation(s)
- E Vieta
- Bipolar Disorders Programme, Institute of Neuroscience, Hospital Clinic, University of Barcelona, IDIBAPS, Barcelona, Spain.
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Nieto M, Barradas M, Criado LM, Flores JM, Serrano M, Llano E. Normal cellular senescence and cancer susceptibility in mice genetically deficient in Ras-induced senescence-1 (Ris1). Oncogene 2006; 26:1673-80. [PMID: 16964279 DOI: 10.1038/sj.onc.1209978] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Oncogenic Ras triggers a permanent cell-cycle arrest known as oncogene-induced senescence (OIS) that constitutes a relevant tumor suppressor mechanism. Ris1 (Ras-induced senescence-1) is a novel gene that was identified in a screen as specifically upregulated during Ras-induced senescence, and that is located at a chromosomal region, 3p21.3, frequently lost in human cancer. Moreover, Ris1 is highly conserved in vertebrates, does not present paralogs, and its sequence does not reveal similarities with other proteins or domains. To analyse the physiological function of Ris1 and test its putative role as a tumor suppressor gene, we have generated mutant mice deficient for this gene. Ris1-null mice are viable, fertile, develop normally and do not display any obvious abnormalities. Of relevance, Ris1-deficient mice had a normal lifespan and did not exhibit predisposition to spontaneous tumors or to tumors induced by chemical carcinogens. Finally, Ris1-deficient embryonic fibroblasts were indistinguishable from wild-type cells regarding their proliferation properties, immortalization, senescence and oncogenic transformation. These findings do not support a role of Ris1 in tumor suppression or in OIS.
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Affiliation(s)
- M Nieto
- Tumor Suppression Group, Spanish National Cancer Center CNIO, Madrid, Spain
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Berger R, Lin DI, Nieto M, Signoretti S, Hahn WC, Loda M. Androgen-dependent regulation of Her-2/neu in prostate cancer cells. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.10099] [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: 11/20/2022] Open
Abstract
10099 Background: The mechanisms underlying the progression of prostate cancer to androgen independence remain poorly understood. Overexpression of Her-2/neu (c-ErbB2) activates the androgen receptor pathway and confers a survival and growth advantage to prostate cancer cells in an androgen-deficient milieu. Methods: Androgen-sensitive prostate cancer cell line LNCaP was used as a model system in vitro and in vivo. Experiments in mice were undertaken by injecting cells orthotopically into the ventral lobe of the mice prostate. Results: Here, we report that androgen receptor (AR) and Her-2/neu reciprocally regulate each other in LNCaP human prostate cancer cells. Absence of androgens, AR blockade with Casodex (bicalutamide) or suppression of AR with RNAi induced Her-2/neu protein expression and phosphorylation in vitro and in vivo. Similarly, suppression of Her-2-neu expression resulted in AR upregulation. In contrast, upon re-administration of androgens, Her-2/neu mRNA, protein and phosphorylation levels decreased linearly with increasing concentrations of androgens as LNCaP cells re-entered the cell cycle. Conclusions: Thus, induction and activation of Her-2/neu occurs in an androgen-depleted environment or as a result of AR inactivation, promoting androgen-independent survival of prostate cancer cells. No significant financial relationships to disclose.
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Affiliation(s)
- R. Berger
- Sheba Medical Center, Tel Hashomer, Israel; Dana-Farber Cancer Institute, Boston, MA; Brigham and Women’s Hospital, Boston, MA
| | - D. I. Lin
- Sheba Medical Center, Tel Hashomer, Israel; Dana-Farber Cancer Institute, Boston, MA; Brigham and Women’s Hospital, Boston, MA
| | - M. Nieto
- Sheba Medical Center, Tel Hashomer, Israel; Dana-Farber Cancer Institute, Boston, MA; Brigham and Women’s Hospital, Boston, MA
| | - S. Signoretti
- Sheba Medical Center, Tel Hashomer, Israel; Dana-Farber Cancer Institute, Boston, MA; Brigham and Women’s Hospital, Boston, MA
| | - W. C. Hahn
- Sheba Medical Center, Tel Hashomer, Israel; Dana-Farber Cancer Institute, Boston, MA; Brigham and Women’s Hospital, Boston, MA
| | - M. Loda
- Sheba Medical Center, Tel Hashomer, Israel; Dana-Farber Cancer Institute, Boston, MA; Brigham and Women’s Hospital, Boston, MA
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Sanchez AM, Jimenez-Ortiz V, Sartor T, Tonn CE, García EE, Nieto M, Burgos MH, Sosa MA. A novel icetexane diterpene, 5-epi-icetexone from Salvia gilliessi is active against Trypanosoma cruzi. Acta Trop 2006; 98:118-24. [PMID: 16647030 DOI: 10.1016/j.actatropica.2005.12.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2005] [Revised: 10/28/2005] [Accepted: 12/28/2005] [Indexed: 10/24/2022]
Abstract
In this work the effect of a novel compound, 5-epi-icetexone (ICTX) obtained from Salvia gilliessi Benth. (Labiatae), is studied on cultured epimastigotes of Trypanosoma cruzi (Tulahuen). It was found that the compound exerts an antiproliferative effect on the parasites at concentrations between 2.8 and 4.2 microM, and similar sensitivity in other strains (Dm28c, CL-Brener and Y-strain). The compound was deleterious at concentrations higher than 4.2 microM, with an estimated IC50 of 6.5+/-0.75 microM, but with low cytotoxicity to mammalian cells. These effects were irreversible, even at short times of exposure to the drug. In solution, ICTX showed to be stable for at least 96 h at 29 degrees C. With cytostatic dose a little percentage of parasites was resistant to the action of ICTX, and they continued growing although with different kinetic. By electron transmission microscopy, at dose of 4.2 microM an external vesiculization was observed on the first day of exposure to the compound, but the parasite cytoplasm became plenty of vacuoles and exhibited nuclear disorganization from the second day of exposure. It was concluded that ICTX is active against T. cruzi and may act by multiple mechanisms. In future, this novel icetexane diterpene may be a good candidate for therapeutic use against Chagas' disease.
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Affiliation(s)
- A M Sanchez
- Instituto de Histología y Embriología, Facultad de Ciencias Medicas, Universidad Nacional de Cuyo, CCcorreo 56, 5500 Mendoza, Argentina
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Santpere G, Nieto M, Puig B, Ferrer I. Abnormal Sp1 transcription factor expression in Alzheimer disease and tauopathies. Neurosci Lett 2006; 397:30-4. [PMID: 16378688 DOI: 10.1016/j.neulet.2005.11.062] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2005] [Revised: 11/12/2005] [Accepted: 11/30/2005] [Indexed: 10/25/2022]
Abstract
Sp1 transcription factor expression was examined by immunohistochemistry, immunofluorescence and confocal microscopy in Alzheimer disease (AD), Pick disease (PiD), progressive supranuclear palsy (PSP), Parkinson disease (PD) and Dementia with Lewy bodies (DLB). Sp1 partly co-localizes with hyper-phosphorylated tau deposits in neurofibrillary tangles, dystrophic neurites of senile plaques and neuropil threads in AD, and in neurons, astrocytes and oligodendrocytes bearing hyper-phosphorylated tau in PiD and PSP. Sp1 is not found in alpha-synuclein inclusions in PD and DLB. These modifications are not associated with changes in the total expression levels of Sp1, as revealed with gel electrophoresis and Western blotting of brain homogenates. Furthermore, no co-immunoprecipitation of Sp1 and phospho-tau was observed in AD and PiD cases. Since Sp1 binding sites are present in the promoters of several genes involved in amyloid and tau, and Sp1 is regulated by oxidative stress, the present findings suggest that Sp1 deposition in hyper-phosphorylated tau deposits may have functional consequences in the pathology of AD and other tauopathies.
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Affiliation(s)
- G Santpere
- Institut Neuropatologia, Servei Anatomia Patològica, IDIBELL-Hospital Universitari de Bellvitge, carrer Feixa Larga sn, 08907 Hospitalet de Llobregat, Spain
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Allain JP, Nieto M, Hassanein A, Titov V, Plotkin P, Hendricks M, Hinson E, Chrobak C, van der Velden MHL, Rice B. Effect of charged-particle bombardment on collector mirror reflectivity in EUV lithography devices. ACTA ACUST UNITED AC 2006. [DOI: 10.1117/12.656652] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Nieto M, Alovero F, Manzo R, Mazzieri M. Benzenecarboxamide Analogs of Fluoroquinolones (BCFQs). Antibacterial Activity and SAR Studies. LETT DRUG DES DISCOV 2006. [DOI: 10.2174/157018006775789702] [Citation(s) in RCA: 4] [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: 11/22/2022]
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Bessa X, O'Callaghan E, Ballesté B, Nieto M, Seoane A, Panadès A, Vazquez DJ, Andreu M, Bory F. Applicability of the Rockall score in patients undergoing endoscopic therapy for upper gastrointestinal bleeding. Dig Liver Dis 2006; 38:12-7. [PMID: 16314150 DOI: 10.1016/j.dld.2005.05.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2005] [Accepted: 05/09/2005] [Indexed: 02/06/2023]
Abstract
BACKGROUND The Rockall score is used to assess the prognosis of patients with upper gastrointestinal bleeding. AIM To assess the applicability of the Rockall score in patients undergoing endoscopic therapy for upper gastrointestinal bleeding. METHODS Retrospective evaluation of the Rockall score in the period 1995-2001. To evaluate the applicability of the Rockall system, two groups were created: group I (Rockall<or=5 points) and group II (Rockall>or=6 points). RESULTS Two hundred and twenty-two patients were included. The median age of patients was 65 +/ -17 years. Hypotension and associated diseases were present in 20 and 50% of patients, respectively. Re-bleeding occurred in 50 patients (23%) whose median score was 7, whereas the median score of patients without re-bleeding was 6 (p=0.14). There were 20 deaths (9%) with a median score of 8, whilst the median score of surviving patients was 6 (p<0.001). Sixteen patients in group I (18.4%) and 34 in group II (25.2%) re-bled (p=0.25). All the patients who died belong to group II with a Rockall score>or=6 (15% versus 0% in groups II and I, respectively, p<0.001). CONCLUSION The Rockall score can be used in patients who undergo therapeutic endoscopy for upper gastrointestinal bleeding to identify those with high risk for mortality.
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Affiliation(s)
- X Bessa
- Gastroenterology Department, Hospital del Mar, Universidad Autonoma de Barcelona, Passeig Maritim 25-29, Catalonia, Spain.
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Arroyo S, Boothman BR, Brodie MJ, Duncan JS, Duncan R, Nieto M, Calandre EP, Forcadas I, Crawford PM. A randomised open-label study of tiagabine given two or three times daily in refractory epilepsy. Seizure 2005; 14:81-4. [PMID: 15694559 DOI: 10.1016/j.seizure.2004.09.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [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: 11/16/2022] Open
Abstract
Efficacy and tolerability of tiagabine was evaluated in patients with non-controlled partial seizures in a multicentre, open-label, parallel group study. Tiagabine was administered either two (b.i.d.) or three times daily (t.i.d.) as adjunctive therapy and titrated stepwise to a target of 40 mg/day during a 12-week, fixed-schedule titration period; this was followed by a 12-week flexible continuation period. The primary efficacy endpoint was the proportion of patients completing the fixed-schedule titration period. A total of 243 patients were randomised and received treatment, 123 to b.i.d. and 120 to t.i.d. dosing. Fewer patients in the b.i.d. (76 and 62%) than in the t.i.d. (87 and 72%) group completed the fixed-schedule titration period (OR: 0.562; 95% CI: 0.309-1.008; P=0.0532). The median percentage decrease in all types of seizure (excluding status epilepticus) during the fixed schedule titration period was 33.4% for the b.i.d. and 23.8% for the t.i.d. groups (P=0.9634; Van Elteren's test). The proportion of responders was similar for the b.i.d. and t.i.d. groups. There were no significant differences between dosage regimens in the change in median seizure rates from baseline. Adverse events were more frequent during the titration than the continuation period. Most events were mild and related to the central nervous system. Although their incidence was similar between treatment groups, severity was more frequent in the b.i.d. group. Our results suggest that during titration tiagabine is better tolerated with t.i.d. dosing, but during long-term maintenance, a t.i.d. schedule is as effective and well tolerated as b.i.d.
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Affiliation(s)
- S Arroyo
- Hospital Clinico de Barcelona, Servicio de Neurologia, C/Villarroel 170, 08036 Barcelona, Spain
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Allain J, Nieto M, Coventry M, Stubbers R, Ruzic D. Studies of liquid-metal erosion and free surface flowing liquid lithium retention of helium at the University of Illinois. Fusion Engineering and Design 2004. [DOI: 10.1016/j.fusengdes.2004.07.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Dubouix A, Nieto M, Fauvel J, Chap H, Marty N, Salles JP, Gaits F. A simple and reliable method for rapid production and purification of Pseudomonas aeruginosa haemolytic phospholipase C. Lett Appl Microbiol 2004; 38:191-6. [PMID: 14962039 DOI: 10.1111/j.1472-765x.2004.01457.x] [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] [Indexed: 12/01/2022]
Abstract
AIMS To design a simple method to produce active recombinant Pseudomonas aeruginosa haemolytic phospholipase C (PLC). METHOD AND RESULTS Pseudomonas aeruginosa PLC is a virulence factor mainly involved in inflammatory and cytotoxic responses. While ammonium sulphate purification requires large amounts of bacterial suspensions and leads to low yields, production of recombinant protein in Escherichia coli is no more successful because of frequent inclusion bodies and accumulation of inactive PLC in the periplasmic space. Using an inducible system based on the glucose-repressed inv1 promoter in the yeast Schizosaccharomyces pombe, we were able to produce up to 10 IU ml(-1) of pure toxin within 24 h. CONCLUSIONS This work describes the first method to easily get recombinant haemolytic PLC. SIGNIFICANCE AND IMPACT OF THE STUDY This method provides a powerful tool to study the mechanisms leading to its cellular toxicity.
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Affiliation(s)
- A Dubouix
- Laboratoire de Bactériologie, Hôpital Rangueil, Toulouse Cedex, France.
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Rodrigo J, Fernández-Vizarra P, Castro-Blanco S, Bentura ML, Nieto M, Gómez-Isla T, Martínez-Murillo R, MartInez A, Serrano J, Fernández AP. Nitric oxide in the cerebral cortex of amyloid-precursor protein (SW) Tg2576 transgenic mice. Neuroscience 2004; 128:73-89. [PMID: 15450355 DOI: 10.1016/j.neuroscience.2004.06.030] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/22/2004] [Indexed: 01/12/2023]
Abstract
Changes in the amyloid-peptide (Abeta), neuronal and inducible nitric oxide (NO)synthase (nNOS, iNOS), nitrotyrosine, glial fibrillary acidic protein, and lectin from Lycopersicon esculentum (tomato) were investigated in the cerebral cortex of transgenic mice (Tg2576) to amyloid precursor protein (APP), by immunohistochemistry (bright light, confocal, and electron microscopy). The expression of nitrergic proteins and synthesis of nitric oxide were analyzed by immunoblotting and NOS activity assays, respectively. The cerebral cortex of these transgenic mice showed an age-dependent progressive increase in intraneuronal aggregates of Abeta-peptide and extracellular formation of senile plaques surrounded by numerous microglial and reactive astrocytes. Basically, no changes to nNOS reactivity or expression were found in the cortical mantle of either wild or transgenic mice. This reactivity in wild mice corresponded to numerous large type I and small type II neurons. The transgenic mice showed swollen, twisted, and hypertrophic preterminal and terminal processes of type I neurons, and an increase of the type II neurons. The calcium-dependent NOS enzymatic activity was higher in wild than in the transgenic mice. The iNOS reactivity, expression and calcium-independent enzymatic activity increased in transgenic mice with respect to wild mice, and were related to cortical neurons and microglial cells. The progressive elevation of NO production resulted in a specific pattern of protein nitration in reactive astrocytes. The ultrastructural study carried out in the cortical mantle showed that the neurons contained intracellular aggregates of Abeta-peptide associated with the endoplasmic reticulum, mitochondria, and Golgi apparatus. The endothelial vascular cells also contained Abeta-peptide deposits. This transgenic model might contribute to understand the role of the nitrergic system in the biological changes related to neuropathological progression of Alzheimer's disease.
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Affiliation(s)
- J Rodrigo
- Department of Neuroanatomy and Cell Biology, Instituto Cajal, CSIC, Doctor Arce Avenue 37, 28002 Madrid, Spain.
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Latorre M, Lázaro R, Gracia M, Nieto M, Mateos G. Effect of sex and terminal sire genotype on performance, carcass characteristics, and meat quality of pigs slaughtered at 117 kg body weight. Meat Sci 2003; 65:1369-77. [DOI: 10.1016/s0309-1740(03)00059-7] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2003] [Revised: 02/14/2003] [Accepted: 02/14/2003] [Indexed: 10/27/2022]
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Pérez‐Llamas F, Garaulet M, Nieto M, Baraza J, Zamora S. Estimates of food intake and dietary habits in a random sample of adolescents in south‐east Spain. J Hum Nutr Diet 2003. [DOI: 10.1046/j.1365-277x.1996.00479.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- F. Pérez‐Llamas
- Department of Physiology and Pharmacology, Faculty of Biology, University of Murcia, 30100 Murcia, Spain
| | - M. Garaulet
- Department of Physiology and Pharmacology, Faculty of Biology, University of Murcia, 30100 Murcia, Spain
| | - M. Nieto
- Department of Physiology and Pharmacology, Faculty of Biology, University of Murcia, 30100 Murcia, Spain
| | - J.C. Baraza
- Department of Physiology and Pharmacology, Faculty of Biology, University of Murcia, 30100 Murcia, Spain
| | - S. Zamora
- Department of Physiology and Pharmacology, Faculty of Biology, University of Murcia, 30100 Murcia, Spain
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Alvarez J, del Barrio MR, Arias J, González M, Córdoba L, Moreno F, Corpas R, Nieto M, Iglesias J, Corral E, Barra C, Elvira J, Ibarguren C. Five years of experience with non-heart-beating donors coming from the streets. Transplant Proc 2002; 34:2589-90. [PMID: 12431535 DOI: 10.1016/s0041-1345(02)03436-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- J Alvarez
- Transplant Coordination, Hospital Clinico San Carlos, Madrid, Spain.
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Allain J, Nieto M, Coventry M, Neumann M, Vargas-Lopez E, Ruzic D. FLIRE—flowing liquid surface retention experiment, design and testing. Fusion Engineering and Design 2002. [DOI: 10.1016/s0920-3796(02)00118-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Abstract
The investigation of parameters that might influence the neurological evolution of Rett syndrome might also yield new information about its pathogenic mechanisms. Oxidative stress caused by oxygen free radicals is involved in the neuropathology of several neurodegenerative disorders, as well as in stroke and seizures. To evaluate the free radical metabolism in Rett syndrome, we measured red blood cell antioxidant enzyme activities (superoxide dismutase, glutathione peroxidase, glutathione reductase and catalase) and plasma malondialdehyde, as lipid peroxidation marker in a group of patients with Rett syndrome. No significant differences were observed in erythrocyte glutathione peroxidase, glutathione reductase and catalase activities, between the Rett syndrome patients and the control group. Erythrocyte superoxide dismutase activities were significantly decreased in Rett syndrome patients (P<0.001) compared with the control group. Plasma malondialdehyde concentrations were significantly increased in Rett syndrome patients (P<0.001). An unbalanced nutritional status in Rett syndrome might explain the reduced enzyme activity found in these patients. Our results suggest that free radicals generated from oxidation reactions might contribute to the pathogenesis of Rett syndrome. The high levels of malondialdehyde reflect peroxidative damage of biomembranes that may contribute to progressive dementia, impaired motor function, behavioural changes, and seizures, in Rett syndrome. We found a probable relationship between the degree of oxidative stress and the severity of symptoms, which should be further investigated with a larger number of patients in different disease stages.
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Affiliation(s)
- C Sierra
- Laboratory Department, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
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Alovero F, Barnes A, Nieto M, Mazzieri MR, Manzo RH. Comparative study of new benzenesulphonamide fluoroquinolones structurally related to ciprofloxacin against selected ciprofloxacin-susceptible and -resistant Gram-positive cocci. J Antimicrob Chemother 2001; 48:709-12. [PMID: 11679560 DOI: 10.1093/jac/48.5.709] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The in vitro activities of benzenesulphonamide fluoroquinolones (BSFQs) I-III, new fluoroquinolones with a p-substituted benzenesulphonyl moiety attached to the C(7) piperazinyl ring of ciprofloxacin, were assessed in comparison with those of N-sulfanilylpiperazinyl fluoroquinolone (NSFQ)-105 and ciprofloxacin for 133 Gram-positive clinical isolates. NSFQ-105 and BSFQ-I were the most active drugs. They were 16- to 64-fold more active than ciprofloxacin against Staphylococcus aureus, Staphylococcus epidermidis, Enterococcus faecalis, including ciprofloxacin-resistant strains, and Streptococcus pneumoniae (eight- to 32-fold). A high degree of correlation was found between the MICs of the new compounds and ciprofloxacin for Staphylococcus spp. and E. faecalis. Staphylococci and enterococci exhibit cross-resistance to BSFQs and ciprofloxacin.
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Affiliation(s)
- F Alovero
- Departamento de Farmacia, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, (5000) Ciudad Universitaria, Córdoba, Argentina
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Abstract
We have addressed the role of the proneural bHLH genes Neurogenin2 (Ngn2) and Mash1 in the selection of neuronal and glial fates by neural stem cells. We show that mice mutant for both genes present severe defects in development of the cerebral cortex, including a reduction of neurogenesis and a premature and excessive generation of astrocytic precursors. An analysis of wild-type and mutant cortical progenitors in culture showed that a large fraction of Ngn2; Mash1 double-mutant progenitors failed to adopt a neuronal fate, instead remaining pluripotent or entering an astrocytic differentiation pathway. Together, these results demonstrate that proneural genes are involved in lineage restriction of cortical progenitors, promoting the acquisition of the neuronal fate and inhibiting the astrocytic fate.
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Affiliation(s)
- M Nieto
- Institut de Génétique et de Biologie Moléculaire, et Cellulaire, CNRS, INSERM, Université, Louis Pasteur, Boite Postale 163, 67404 Illkirch Cédex, Communauté Urbaine de, Strasbourg, France
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