1
|
Santiago JL, Rivas E, Sanchez B, Buccolieri R, Vivanco MG, Martilli A, Martín F. Impact of single and combined local air pollution mitigation measures in an urban environment. Sci Total Environ 2024; 924:171441. [PMID: 38447731 DOI: 10.1016/j.scitotenv.2024.171441] [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] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 02/22/2024] [Accepted: 03/01/2024] [Indexed: 03/08/2024]
Abstract
Urban air pollution is one of the most important environmental problems for human health and several strategies have been developed for its mitigation. The objective of this study is to assess the impact of single and combined mitigation measures on concentrations of air pollutants emitted by traffic at pedestrian level in the same urban environment. The effectiveness of different scenarios of green infrastructure (GI), the implementation of photocatalytic materials and traffic low emission zones (LEZ) are investigated, as well as several combinations of LEZ and GI. A wide set of scenarios is simulated through Computational Fluid Dynamics (CFD) modelling for two different wind directions (perpendicular (0°) and 45° wind directions). Wind flow for the BASE scenario without any measure implemented was previously evaluated using wind-tunnel measurements. Air pollutant concentrations for this scenario are compared with the results obtained from the different mitigation scenarios. Reduction of traffic emissions through LEZ is found to be the most effective single measure to improve local air quality. However, GI enhances the effects of LEZ, which makes the combination of LEZ + GI a very effective measure. The effectiveness of this combination depends on the GI layout, the intensity of emission reduction in the LEZ and the traffic diversion in streets surrounding the LEZ. These findings, in line with previous literature, suggest that the implementation of GI may increase air pollutant concentrations at pedestrian level for some cases. However, this study highlights that this negative effect on air quality can turn into positive when used in combination with reductions of local traffic emissions.
Collapse
Affiliation(s)
- J L Santiago
- Atmospheric Modelling Unit, Environmental Department, CIEMAT, Av. Complutense 40, 28040 Madrid, Spain.
| | - E Rivas
- Atmospheric Modelling Unit, Environmental Department, CIEMAT, Av. Complutense 40, 28040 Madrid, Spain; Vicerrectorado de Investigación, Innovación y Doctorado, Universidad Politécnica de Madrid (UPM), Madrid, Spain
| | - B Sanchez
- Atmospheric Modelling Unit, Environmental Department, CIEMAT, Av. Complutense 40, 28040 Madrid, Spain
| | - R Buccolieri
- Department of Environmental and Biological Sciences and technologies, Laboratory of Micrometeorology, University of Salento, S.P. 6 Lecce-Monteroni, 73100 Lecce, Italy; Institute of Atmospheric Sciences and Climate (ISAC), National Research Council (CNR), S.P. Lecce-Monteroni km 1,2, 73100 Lecce, Italy
| | - M G Vivanco
- Atmospheric Modelling Unit, Environmental Department, CIEMAT, Av. Complutense 40, 28040 Madrid, Spain
| | - A Martilli
- Atmospheric Modelling Unit, Environmental Department, CIEMAT, Av. Complutense 40, 28040 Madrid, Spain
| | - F Martín
- Atmospheric Modelling Unit, Environmental Department, CIEMAT, Av. Complutense 40, 28040 Madrid, Spain
| |
Collapse
|
2
|
Laguna G, Suárez-Sipmann F, Tusman G, Ripollés J, Díaz-Cambronero O, Pujol R, Rivas E, Garutti I, Mellado R, Vallverdú J, Jacas A, Fervienza A, Marrero R, Librero J, Villar J, Ferrando C. Rationale and study design for an Individualized PeriopeRative Open lung VEntilatory approach in Emergency Abdominal Laparotomy/scopy: study protocol for a prospective international randomized controlled trial. Rev Esp Anestesiol Reanim (Engl Ed) 2024:S2341-1929(24)00075-1. [PMID: 38636796 DOI: 10.1016/j.redare.2024.04.007] [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] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 11/16/2023] [Indexed: 04/20/2024]
Abstract
BACKGROUND Postoperative pulmonary complications (PPC) are the most frequent postoperative complications, with an estimated prevalence in elective surgery ranging from 20% in observational cohort studies to 40% in randomized clinical trials. However, the prevalence of PPCs in patients undergoing emergency abdominal surgery is not well defined. Lung-protective ventilation aims to minimize ventilator-induced lung injury and reduce PPCs. The open lung approach (OLA), which combines recruitment manoeuvres (RM) and positive end-expiratory pressure (PEEP) titration, aims to minimize areas of atelectasis and the development of PPCs; however, there is no conclusive evidence in the literature that OLA can prevent PPCs. The purpose of this study is to compare an individualized perioperative OLA with conventional standardized lung-protective ventilation in patients undergoing emergency abdominal surgery with clinical signs of intraoperative lung collapse. METHODS Randomized international clinical trial to compare an individualized perioperative OLA (RM plus individualized PEEP and individualized postoperative respiratory support) with conventional lung-protective ventilation (standard PEEP of 5 cmH2O and conventional postoperative oxygen therapy) in patients undergoing emergency abdominal surgery with clinical signs of lung collapse. Patients will be randomised to open-label parallel groups. The primary outcome is any severe PPC during the first 7 postoperative days, including: acute respiratory failure, pneumothorax, weaning failure, acute respiratory distress syndrome, and pulmonary infection. The estimated sample size is 732 patients (366 per group). The final sample size will be readjusted during the interim analysis. DISCUSSION The Individualized Perioperative Open-lung Ventilatory Strategy in emergency abdominal laparotomy (iPROVE-EAL) is the first multicentre, randomized, controlled trial to investigate whether an individualized perioperative approach prevents PPCs in patients undergoing emergency surgery.
Collapse
Affiliation(s)
- G Laguna
- Departamento de Anestesia y Cuidados Críticos, Hospital Clínic, Barcelona, España.
| | - F Suárez-Sipmann
- Unidad de Cuidados Intensivos, Hospital Universitario La Princesa, Madrid, España; CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, España
| | - G Tusman
- Departamento de Anestesia, Hospital Privado de Comunidad, Mar de Plata, Argentina
| | - J Ripollés
- Departamento de Anestesia, Hospital Infanta Leonor, Madrid, España
| | | | - R Pujol
- Departamento de Anestesia y Cuidados Críticos, Hospital Clínic, Barcelona, España
| | - E Rivas
- Departamento de Anestesia y Cuidados Críticos, Hospital Clínic, Barcelona, España
| | - I Garutti
- Departamento de Anestesia, Hospital Universitario Gregorio Marañón, Madrid, España
| | - R Mellado
- Departamento de Anestesia y Cuidados Críticos, Hospital Clínic, Barcelona, España
| | - J Vallverdú
- Departamento de Anestesia y Cuidados Críticos, Hospital Clínic, Barcelona, España
| | - A Jacas
- Departamento de Anestesia y Cuidados Críticos, Hospital Clínic, Barcelona, España
| | - A Fervienza
- Departamento de Anestesia y Cuidados Críticos, Hospital Clínic, Barcelona, España
| | - R Marrero
- Departamento de Anestesia y Cuidados Críticos, Hospital Clínic, Barcelona, España
| | - J Librero
- Navarrabiomed-Fundación Miguel Servet, Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC), Pamplona, España
| | - J Villar
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, España; Red Multidisciplinar de Investigación en Evaluación de Disfunción de Órganos, Unidad de Investigación, Hospital Universitario Dr. Negrín, Las Palmas de Gran Canaria, España
| | - C Ferrando
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, España; Departamento de Anestesia y Cuidados Críticos, Hospital Clínic, Institut D'Investigació August Pi i Sunyer, Barcelona, España
| |
Collapse
|
3
|
Martín F, Janssen S, Rodrigues V, Sousa J, Santiago JL, Rivas E, Stocker J, Jackson R, Russo F, Villani MG, Tinarelli G, Barbero D, José RS, Pérez-Camanyo JL, Santos GS, Bartzis J, Sakellaris I, Horváth Z, Környei L, Liszkai B, Kovács Á, Jurado X, Reiminger N, Thunis P, Cuvelier C. Using dispersion models at microscale to assess long-term air pollution in urban hot spots: A FAIRMODE joint intercomparison exercise for a case study in Antwerp. Sci Total Environ 2024; 925:171761. [PMID: 38494008 DOI: 10.1016/j.scitotenv.2024.171761] [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] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 03/08/2024] [Accepted: 03/14/2024] [Indexed: 03/19/2024]
Abstract
In the framework of the Forum for Air Quality Modelling in Europe (FAIRMODE), a modelling intercomparison exercise for computing NO2 long-term average concentrations in urban districts with a very high spatial resolution was carried out. This exercise was undertaken for a district of Antwerp (Belgium). Air quality data includes data recorded in air quality monitoring stations and 73 passive samplers deployed during one-month period in 2016. The modelling domain was 800 × 800 m2. Nine modelling teams participated in this exercise providing results from fifteen different modelling applications based on different kinds of model approaches (CFD - Computational Fluid Dynamics-, Lagrangian, Gaussian, and Artificial Intelligence). Some approaches consisted of models running the complete one-month period on an hourly basis, but most others used a scenario approach, which relies on simulations of scenarios representative of wind conditions combined with post-processing to retrieve a one-month average of NO2 concentrations. The objective of this study is to evaluate what type of modelling system is better suited to get a good estimate of long-term averages in complex urban districts. This is very important for air quality assessment under the European ambient air quality directives. The time evolution of NO2 hourly concentrations during a day of relative high pollution was rather well estimated by all models. Relative to high resolution spatial distribution of one-month NO2 averaged concentrations, Gaussian models were not able to give detailed information, unless they include building data and street-canyon parameterizations. The models that account for complex urban geometries (i.e. CFD, Lagrangian, and AI models) appear to provide better estimates of the spatial distribution of one-month NO2 averages concentrations in the urban canopy. Approaches based on steady CFD-RANS (Reynolds Averaged Navier Stokes) model simulations of meteorological scenarios seem to provide good results with similar quality to those obtained with an unsteady one-month period CFD-RANS simulations.
Collapse
Affiliation(s)
- F Martín
- CIEMAT, Research Center for Energy, Environment and Technology, Avenida Complutense 40, 28040 Madrid, Spain.
| | - S Janssen
- VITO NV, Flemish Institute for Research and Technology, Boeretang 200, 2400 Mol, Belgium
| | - V Rodrigues
- CESAM & Department of Environment and Planning, University of Aveiro, 3810-193 Aveiro, Portugal
| | - J Sousa
- VITO NV, Flemish Institute for Research and Technology, Boeretang 200, 2400 Mol, Belgium
| | - J L Santiago
- CIEMAT, Research Center for Energy, Environment and Technology, Avenida Complutense 40, 28040 Madrid, Spain
| | - E Rivas
- CIEMAT, Research Center for Energy, Environment and Technology, Avenida Complutense 40, 28040 Madrid, Spain
| | - J Stocker
- Cambridge Environmental Research Consultants (CERC), UK
| | - R Jackson
- Cambridge Environmental Research Consultants (CERC), UK
| | - F Russo
- ENEA, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, 40129 Bologna, Italy
| | - M G Villani
- ENEA, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, 40129 Bologna, Italy
| | - G Tinarelli
- ARIANET S.r.l., via Crespi 57, 20159 Milano, Italy
| | - D Barbero
- ARIANET S.r.l., via Crespi 57, 20159 Milano, Italy
| | - R San José
- Computer Science School, Technical University of Madrid (UPM), Campus de Montegancedo, s/n, 28660 Madrid, Spain
| | - J L Pérez-Camanyo
- Computer Science School, Technical University of Madrid (UPM), Campus de Montegancedo, s/n, 28660 Madrid, Spain
| | - G Sousa Santos
- NILU - The Climate and Environmental Research Institute, Norway
| | - J Bartzis
- University of Western Macedonia (UOWM), Dept. of Mechanical Engineering, Sialvera & Bakola Str., 50132 Kozani, Greece
| | - I Sakellaris
- University of Western Macedonia (UOWM), Dept. of Mechanical Engineering, Sialvera & Bakola Str., 50132 Kozani, Greece
| | - Z Horváth
- SZE, Széchenyi István University, Győr, Hungary
| | - L Környei
- SZE, Széchenyi István University, Győr, Hungary
| | - B Liszkai
- SZE, Széchenyi István University, Győr, Hungary
| | - Á Kovács
- SZE, Széchenyi István University, Győr, Hungary
| | | | - N Reiminger
- AIR&D, Strasbourg, France; ICUBE Laboratory, UMR 7357, CNRS/University of Strasbourg, F-67000 Strasbourg, France
| | - P Thunis
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | - C Cuvelier
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| |
Collapse
|
4
|
Dieguez I, Goma A, Rivas E, Martinez-Palli G. Security and efficiency of health care models based on anesthetist nursing: Time to move on. Rev Esp Anestesiol Reanim (Engl Ed) 2023; 70:367-368. [PMID: 37271341 DOI: 10.1016/j.redare.2023.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 07/21/2022] [Indexed: 06/06/2023]
Affiliation(s)
- I Dieguez
- Servicio de Anestesiología y Reanimación, Sección del Institut de Malalties Digestives, Hospital Clínic de Barcelona, Barcelona, Spain.
| | - A Goma
- Servicio de Anestesiología y Reanimación, Sección del Institut de Malalties Digestives, Hospital Clínic de Barcelona, Barcelona, Spain
| | - E Rivas
- Servicio de Anestesiología y Reanimación, Sección del Institut de Malalties Digestives, Hospital Clínic de Barcelona, Barcelona, Spain
| | - G Martinez-Palli
- Servicio de Anestesiología y Reanimación, Sección del Institut de Malalties Digestives, Hospital Clínic de Barcelona, Barcelona, Spain
| |
Collapse
|
5
|
Panzeri MF, López-Baamonde M, Borrat X, Rivas E. Airway management in a patient with megaesophagus and alimentary impact. Rev Esp Anestesiol Reanim (Engl Ed) 2023; 70:185-186. [PMID: 36842693 DOI: 10.1016/j.redare.2023.02.003] [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] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 02/18/2022] [Indexed: 02/28/2023]
Affiliation(s)
- M F Panzeri
- Servicio de Anestesiología, Reanimación y Terapéutica del Dolor, Hospital Clínic, Barcelona, Spain
| | - M López-Baamonde
- Servicio de Anestesiología, Reanimación y Terapéutica del Dolor, Hospital Clínic, Barcelona, Spain
| | - X Borrat
- Servicio de Anestesiología, Reanimación y Terapéutica del Dolor, Hospital Clínic, Barcelona, Spain
| | - E Rivas
- Servicio de Anestesiología, Reanimación y Terapéutica del Dolor, Hospital Clínic, Barcelona, Spain; Outcomes Research Consortium, OH, USA.
| |
Collapse
|
6
|
Rivas E, Ojeda J, Garcia-Rivera EJ, Rivera DM, Arredondo JL, Medina EL, Aguirre F, Bernal L, Chen Z, Petit C, Guranathan S, Heinrichs JH, Áñez G, Noriega F. Prospective surveillance of Zika virus at the end of the Americas’ outbreak: An unexpected outcome. Front Trop Dis 2022. [DOI: 10.3389/fitd.2022.1027908] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
ObjectiveThe French Polynesia Zika virus (ZIKV) outbreak (2013–2014) broadened the known manifestations of ZIKV disease (ZVD) to include neural and congenital syndromes. A subsequent epidemic in the Americas (2015–2016) caused >685,000 suspected/confirmed cases before seemingly disappearing as fast as it expanded. A study was implemented (2017–2018) to detect ZVD cases in the region (Mexico, Honduras, Colombia and Puerto Rico), with the aim of validating surveillance methodology so as to increase sensitivity in case detection, which would have potential application for future vaccine development endeavors.Study design and settingTo identify potential cases, we focused on signs/symptoms that were frequently associated with ZVD for confirmation by PCR. Serostatus and seroconversion were evaluated by ZIKV non-structural protein 1 blockade-of-binding enzyme-linked immunosorbent assay (BOB ELISA) and microneutralization assay.ResultsOverall, 2,400 participants aged 15–40 years were enrolled; 959 (40.0%) had signs/symptoms that could be associated with ZVD: axillary temperature ≥37°C (64.3%), myalgia (60.8%) and arthralgia (58.6%). Three suspected cases were virologically confirmed. Zika seroprevalence was high at study initiation (52.6% [BOB ELISA] and 56.0% [microneutralization assay]). In participants who were Zika seronegative, low seroconversion rates were observed after one year follow-up (3.6% [BOB ELISA] and 3.1% [microneutralization assay]).ConclusionThe ZIKV continued to circulate in the Americas at very low levels following the 2015–2016 outbreak. The epidemiological factors driving Zika’s rapid rise and decline remain poorly understood.Clinical trial registrationClinicaltrials.gov: NCT03158233 BARDA (Contract # HHSO100201600039C) WHO Universal Trial Number: U1111-1183-5687.
Collapse
|
7
|
Santiago JL, Rivas E, Gamarra AR, Vivanco MG, Buccolieri R, Martilli A, Lechón Y, Martín F. Estimates of population exposure to atmospheric pollution and health-related externalities in a real city: The impact of spatial resolution on the accuracy of results. Sci Total Environ 2022; 819:152062. [PMID: 34856257 DOI: 10.1016/j.scitotenv.2021.152062] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 09/08/2021] [Revised: 11/25/2021] [Accepted: 11/25/2021] [Indexed: 06/13/2023]
Abstract
Health impacts of atmospheric pollution is an important issue in urban environments. Its magnitude depends on population exposure which have been frequently estimated by considering different approaches relating pollutant concentration and population exposed to it. However, the uncertainties due to the spatial resolution of the model used to estimate the pollutant concentration or due to the lack of representativeness of urban air quality monitoring station (AQMS) have not been evaluated in detail. In this context, NO2 annual average concentration at pedestrian level in the whole city of Pamplona (Spain) modelled at high spatial resolution (~1 m) by Computational Fluid Dynamic (CFD) simulations is used to estimate the total population exposure and health-related externalities by using different approaches. Air pollutant concentration and population are aggregated at different spatial resolutions ranging from a horizontal grid cell size of 100 m × 100 m to a coarser resolution where the whole city is covered by only one cell (6 km × 5 km). In addition, concentrations at AQMS locations are also extracted to assess the representativeness of those AQMS. The case with a spatial resolution of 100 m × 100 m for both pollutant-concentration distribution and population data is used as a reference (Base case) and compared with those obtained with the other approaches. This study indicates that the spatial resolution of concentration and population distribution in the city should be 1 km × 1 km or finer to obtain appropriate estimates of total population exposure (underestimations <13%) and health-related externalities (underestimations <37%). For the cases with coarser resolutions, a strong underestimation of total population exposure (>31%) and health-related externalities (>76%) was found. On the other hand, the use of AQMS concentrations can induce important errors due to the limited spatial representativeness, in particular in terms of population exposure.
Collapse
Affiliation(s)
- J L Santiago
- Atmospheric Pollution Division, Environmental Department, CIEMAT, Madrid, Spain.
| | - E Rivas
- Atmospheric Pollution Division, Environmental Department, CIEMAT, Madrid, Spain
| | | | - M G Vivanco
- Atmospheric Pollution Division, Environmental Department, CIEMAT, Madrid, Spain
| | - R Buccolieri
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, University of Salento, Lecce, Italy
| | - A Martilli
- Atmospheric Pollution Division, Environmental Department, CIEMAT, Madrid, Spain
| | - Y Lechón
- Department of Energy, CIEMAT, Madrid, Spain
| | - F Martín
- Atmospheric Pollution Division, Environmental Department, CIEMAT, Madrid, Spain
| |
Collapse
|
8
|
Sridhar S, Joaquin A, Bonaparte MI, Bueso A, Chabanon AL, Chen A, Chicz RM, Diemert D, Essink BJ, Fu B, Grunenberg NA, Janosczyk H, Keefer MC, Rivera M DM, Meng Y, Michael NL, Munsiff SS, Ogbuagu O, Raabe VN, Severance R, Rivas E, Romanyak N, Rouphael NG, Schuerman L, Sher LD, Walsh SR, White J, von Barbier D, de Bruyn G, Canter R, Grillet MH, Keshtkar-Jahromi M, Koutsoukos M, Lopez D, Masotti R, Mendoza S, Moreau C, Ceregido MA, Ramirez S, Said A, Tavares-Da-Silva F, Shi J, Tong T, Treanor J, Diazgranados CA, Savarino S. Safety and immunogenicity of an AS03-adjuvanted SARS-CoV-2 recombinant protein vaccine (CoV2 preS dTM) in healthy adults: interim findings from a phase 2, randomised, dose-finding, multicentre study. Lancet Infect Dis 2022; 22:636-648. [PMID: 35090638 PMCID: PMC8789245 DOI: 10.1016/s1473-3099(21)00764-7] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/16/2021] [Accepted: 11/30/2021] [Indexed: 12/11/2022]
Abstract
BACKGROUND We evaluated our SARS-CoV-2 prefusion spike recombinant protein vaccine (CoV2 preS dTM) with different adjuvants, unadjuvanted, and in a one-injection and two-injection dosing schedule in a previous phase 1-2 study. Based on interim results from that study, we selected a two-injection schedule and the AS03 adjuvant for further clinical development. However, lower than expected antibody responses, particularly in older adults, and higher than expected reactogenicity after the second vaccination were observed. In the current study, we evaluated the safety and immunogenicity of an optimised formulation of CoV2 preS dTM adjuvanted with AS03 to inform progression to phase 3 clinical trial. METHODS This phase 2, randomised, parallel-group, dose-ranging study was done in adults (≥18 years old), including those with pre-existing medical conditions, those who were immunocompromised (except those with recent organ transplant or chemotherapy) and those with a potentially increased risk for severe COVID-19, at 20 clinical research centres in the USA and Honduras. Women who were pregnant or lactating or, for those of childbearing potential, not using an effective method of contraception or abstinence, and those who had received a COVID-19 vaccine, were excluded. Participants were randomly assigned (1:1:1) using an interactive response technology system, with stratification by age (18-59 years and ≥60 years), rapid serodiagnostic test result (positive or negative), and high-risk medical conditions (yes or no), to receive two injections (day 1 and day 22) of 5 7mu;g (low dose), 10 7mu;g (medium dose), or 15 7mu;g (high dose) CoV2 preS dTM antigen with fixed AS03 content. All participants and outcome assessors were masked to group assignment; unmasked study staff involved in vaccine preparation were not involved in safety outcome assessments. All laboratory staff performing the assays were masked to treatment. The primary safety objective was to describe the safety profile in all participants, for each candidate vaccine formulation. Safety endpoints were evaluated for all randomised participants who received at least one dose of the study vaccine (safety analysis set), and are presented here for the interim study period (up to day 43). The primary immunogenicity objective was to describe the neutralising antibody titres to the D614G variant 14 days after the second vaccination (day 36) in participants who were SARS-CoV-2 naive who received both injections, provided samples at day 1 and day 36, did not have protocol deviations, and did not receive an authorised COVID-19 vaccine before day 36. Neutralising antibodies were measured using a pseudovirus neutralisation assay and are presented here up to 14 days after the second dose. As a secondary immunogenicity objective, we assessed neutralising antibodies in non-naive participants. This trial is registered with ClinicalTrials.gov (NCT04762680) and is closed to new participants for the cohort reported here. FINDINGS Of 722 participants enrolled and randomly assigned between Feb 24, 2021, and March 8, 2021, 721 received at least one injection (low dose=240, medium dose=239, and high dose=242). The proportion of participants reporting at least one solicited adverse reaction (injection site or systemic) in the first 7 days after any vaccination was similar between treatment groups (217 [91%] of 238 in the low-dose group, 213 [90%] of 237 in the medium-dose group, and 218 [91%] of 239 in the high-dose group); these adverse reactions were transient, were mostly mild to moderate in intensity, and occurred at a higher frequency and intensity after the second vaccination. Four participants reported immediate unsolicited adverse events; two (one each in the low-dose group and medium-dose group) were considered by the investigators to be vaccine related and two (one each in the low-dose and high-dose groups) were considered unrelated. Five participants reported seven vaccine-related medically attended adverse events (two in the low-dose group, one in the medium-dose group, and four in the high-dose group). No vaccine-related serious adverse events and no adverse events of special interest were reported. Among participants naive to SARS-CoV-2 at day 36, 158 (98%) of 162 in the low-dose group, 166 (99%) of 168 in the medium-dose group, and 163 (98%) of 166 in the high-dose group had at least a two-fold increase in neutralising antibody titres to the D614G variant from baseline. Neutralising antibody geometric mean titres (GMTs) at day 36 for participants who were naive were 2189 (95% CI 1744-2746) for the low-dose group, 2269 (1792-2873) for the medium-dose group, and 2895 (2294-3654) for the high-dose group. GMT ratios (day 36: day 1) were 107 (95% CI 85-135) in the low-dose group, 110 (87-140) in the medium-dose group, and 141 (111-179) in the high-dose group. Neutralising antibody titres in non-naive adults 21 days after one injection tended to be higher than titres after two injections in adults who were naive, with GMTs 21 days after one injection for participants who were non-naive being 3143 (95% CI 836-11 815) in the low-dose group, 2338 (593-9226) in the medium-dose group, and 7069 (1361-36 725) in the high-dose group. INTERPRETATION Two injections of CoV2 preS dTM-AS03 showed acceptable safety and reactogenicity, and robust immunogenicity in adults who were SARS-CoV-2 naive and non-naive. These results supported progression to phase 3 evaluation of the 10 7mu;g antigen dose for primary vaccination and a 5 7mu;g antigen dose for booster vaccination. FUNDING Sanofi Pasteur and Biomedical Advanced Research and Development Authority.
Collapse
Affiliation(s)
| | - Arnel Joaquin
- Charles R Drew University of Medicine and Science, Los Angeles, CA, USA
| | | | | | | | | | | | - David Diemert
- The George Washington School of Medicine and Health Sciences, Washington, DC, USA
| | | | - Bo Fu
- Sanofi Pasteur, Swiftwater, PA, USA
| | | | | | - Michael C Keefer
- University of Rochester, School of Medicine and Dentistry, Rochester, NY, USA
| | | | - Ya Meng
- Sanofi Pasteur, Swiftwater, PA, USA
| | | | - Sonal S Munsiff
- University of Rochester, School of Medicine and Dentistry, Rochester, NY, USA
| | | | - Vanessa N Raabe
- New York University Grossman School of Medicine, New York, NY, USA
| | | | | | | | | | | | - Lawrence D Sher
- Peninsula Research Associates, Rolling Hills Estates, CA, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - Shelly Ramirez
- Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | | | | | - Jiayuan Shi
- TechData Service Company, King of Prussia, PA, USA
| | - Tina Tong
- Vaccine Translational Research Branch, National Institute of Allergy and Infectious Diseases, NIH, Rockville, MD, USA
| | - John Treanor
- Biomedical Advanced Research and Development Authority, Washington, DC, USA
| | | | | |
Collapse
|
9
|
Dofash L, Faiz F, Servián-Morilla E, Rivas E, Sullivan P, Oates E, Clayton J, Taylor R, Davis M, Laing N, Cabrera-Serrano M, Ravenscroft G. CONGENITAL MYOPATHIES – NEMALINE MYOPATHIES. Neuromuscul Disord 2021. [DOI: 10.1016/j.nmd.2021.07.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
10
|
Bodemer C, Kaszuba A, Kingo K, Tsianakas A, Morita A, Rivas E, Papanastasiou P, Patekar M, Papavassilis C, Bruin G, You R. 25482 Secukinumab efficacy and safety profile in pediatric patients with severe chronic plaque psoriasis up to 1 year. J Am Acad Dermatol 2021. [DOI: 10.1016/j.jaad.2021.06.263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
11
|
Santiago JL, Borge R, Sanchez B, Quaassdorff C, de la Paz D, Martilli A, Rivas E, Martín F. Estimates of pedestrian exposure to atmospheric pollution using high-resolution modelling in a real traffic hot-spot. Sci Total Environ 2021; 755:142475. [PMID: 33039894 DOI: 10.1016/j.scitotenv.2020.142475] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 08/19/2020] [Accepted: 09/16/2020] [Indexed: 06/11/2023]
Abstract
Atmospheric pollution is a very relevant risk for the human health, in particular in urban environments, where most people lives and high levels of pollution are found. Population exposure is traditionally estimated through concentration recorded at air quality monitoring stations (AQMS) or modelled at a spatial resolution of the order of 1 km2. However, these methodologies have limitations in urban areas where strong gradients of concentration, even in the same street, exist. In addition, the movements of pedestrians make difficult to compute reliable estimates of pollutant concentration to which people are exposed to. In this context, the main objective of this study is to estimate the exposure of pedestrians to ambient nitrogen oxides (NOx) concentrations with high spatial resolution in a real urban traffic hot-spot under different methodologies. To achieve this objective, a novel methodology which combines high-resolution NOx concentrations from computational fluid dynamic (CFD) simulations with the pedestrian flows obtained by pedestrian mobility microsimulations is applied to an urban area of Madrid, Spain. High-resolution maps show pedestrian exposure peaks, at bus stops and crosswalks, that cannot be captured by the simpler methods based on spatial average concentration (SAC) or concentration measured in an AQMS. Total daily exposure obtained is 1.19 · 109 person s μg m-3, while SAC and AQMS concentration methods yielded 9-23% and 30-40% lower values. In conclusion, the proposed methodology allows to determine the areas with higher exposure in order to design local strategies to reduce the impact on human health. In addition, from a more general point of view, the total exposure in the studied area is better estimated by using spatial average concentration than through concentration recorded by AQMS. The assessment of the spatial representative of AQMS becomes necessary to use AQMS concentration to evaluate air quality and population exposure of an urban area.
Collapse
Affiliation(s)
- J L Santiago
- Atmospheric Pollution Division, Environmental Department, CIEMAT, Spain.
| | - R Borge
- Laboratory of Environmental Modelling, Universidad Politécnica de Madrid (UPM), Madrid, Spain
| | - B Sanchez
- Department of Geography, National University of Singapore, Singapore; Atmospheric Pollution Division, Environmental Department, CIEMAT, Spain
| | - C Quaassdorff
- Laboratory of Environmental Modelling, Universidad Politécnica de Madrid (UPM), Madrid, Spain
| | - D de la Paz
- Laboratory of Environmental Modelling, Universidad Politécnica de Madrid (UPM), Madrid, Spain
| | - A Martilli
- Atmospheric Pollution Division, Environmental Department, CIEMAT, Spain
| | - E Rivas
- Atmospheric Pollution Division, Environmental Department, CIEMAT, Spain
| | - F Martín
- Atmospheric Pollution Division, Environmental Department, CIEMAT, Spain
| |
Collapse
|
12
|
Bodemer C, Kaszuba A, Kingo K, Tsianakas A, Morita A, Rivas E, Papanastasiou P, Keefe D, Patekar M, Charef P, Zhang L, Cafoncelli S, Papavassilis C. Secukinumab demonstrates high efficacy and a favourable safety profile in paediatric patients with severe chronic plaque psoriasis: 52-week results from a Phase 3 double-blind randomized, controlled trial. J Eur Acad Dermatol Venereol 2021; 35:938-947. [PMID: 33068444 PMCID: PMC7986088 DOI: 10.1111/jdv.17002] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [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: 07/20/2020] [Revised: 09/23/2020] [Accepted: 10/14/2020] [Indexed: 12/14/2022]
Abstract
Background Secukinumab has demonstrated sustained long‐term efficacy with a favourable safety profile in various psoriatic disease manifestations in adults. Objectives Here, the efficacy and safety of two secukinumab dosing regimens [low dose (LD) and high dose (HD)] in paediatric patients with severe chronic plaque psoriasis over one year are reported. Methods In this multicentre, double‐blind study (NCT02471144), patients aged 6 to <18 years with severe chronic plaque psoriasis were stratified and randomized by weight (<25 kg, 25 to <50 kg, ≥50 kg) and age (6 to <12 years, 12 to <18 years) to receive low‐dose (LD: 75/75/150 mg) or high‐dose (HD: 75/150/300 mg) subcutaneous secukinumab or placebo or etanercept 0.8 mg/kg (up to a max of 50 mg). Results Overall, 162 patients were randomized to receive secukinumab LD (n = 40) or HD (n = 40), etanercept (n = 41) or placebo (n = 41). The co‐primary objectives of the study were met with both secukinumab doses (LD and HD) showing superior efficacy compared to placebo (P < 0.0001) with respect to PASI 75 response (80.0%, 77.5% vs. 14.6%) and IGA mod 2011, 0 or 1 response (70%, 60% vs. 4.9%) at Week 12. Both secukinumab doses were superior to placebo (P < 0.0001) with respect to PASI 90 response at Week 12 (72.5%, 67.5% vs. 2.4%). The efficacy of both doses was sustained to Week 52 with secukinumab achieving higher responses vs. etanercept (PASI 75/90/100: LD, 87.5%/75.0%/40.0% and HD, 87.5%/80.0%/47.5.% vs. etanercept, 68.3%/51.2%/22.0% and IGA 0 or 1: LD, 72.5% and HD, 75.0% vs. etanercept, 56.1%). The safety profile of secukinumab was consistent with the adult Phase 3 studies, with no new safety signals identified. Conclusions Both doses of secukinumab demonstrated high and sustained efficacy up to Week 52 with a favourable safety profile in paediatric patients with severe chronic plaque psoriasis.
Collapse
Affiliation(s)
- C Bodemer
- Department of Dermatology, Hôpital Necker-Enfants Malades, APHP, Paris, France
| | - A Kaszuba
- DERMED Medical Services, Lodz, Poland
| | - K Kingo
- Tartu University Hospital and University of Tartu, Tartu, Estonia
| | - A Tsianakas
- Fachklinik Bad Bentheim, Bad Bentheim, Germany
| | - A Morita
- Nagoya City University Hospital, Aichi, Japan
| | - E Rivas
- Dermos, Guatemala City, Guatemala
| | | | - D Keefe
- Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA
| | - M Patekar
- Novartis Pharma AG, Basel, Switzerland
| | - P Charef
- Novartis Pharma AG, Basel, Switzerland
| | - L Zhang
- Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA
| | - S Cafoncelli
- Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA
| | | |
Collapse
|
13
|
de Bruyn G, Gordon DL, Steiner T, Tambyah P, Cosgrove C, Martens M, Bassily E, Chan ES, Patel D, Chen J, Torre-Cisneros J, Fernando De Magalhães Francesconi C, Gesser R, Jeanfreau R, Launay O, Laot T, Morfin-Otero R, Oviedo-Orta E, Park YS, Piazza FM, Rehm C, Rivas E, Self S, Gurunathan S. Safety, immunogenicity, and efficacy of a Clostridioides difficile toxoid vaccine candidate: a phase 3 multicentre, observer-blind, randomised, controlled trial. Lancet Infect Dis 2020; 21:252-262. [PMID: 32946836 DOI: 10.1016/s1473-3099(20)30331-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 02/18/2020] [Accepted: 04/14/2020] [Indexed: 12/22/2022]
Abstract
BACKGROUND In the absence of a licensed vaccine, Clostridioides (formerly Clostridium) difficile infection represents a substantial health burden. The aim of this study was to evaluate the efficacy, immunogenicity, and safety of a toxoid vaccine candidate. METHODS We did a phase 3 multicentre, observer-blind, randomised, controlled trial at 326 hospitals, clinics, and clinical research centres in 27 countries in the USA, Canada, Latin America, Europe, and the Asia-Pacific region. We included adults aged 50 years or older who were considered to be at an increased risk of C difficile infection because they had previously had two hospital stays (each ≥24 h in duration) and had received systemic antibiotics in the previous 12 months (risk stratum 1), or because they were anticipating being admitted to hospital for 72 h or more for elective surgery within 60 days of enrolment (risk stratum 2). Eligible participants were stratified by geographical region and the two risk strata, and randomly assigned (2:1), with a fixed block size of three, to receive either a C difficile toxoid vaccine candidate, containing toxoids A and B (C difficile vaccine candidate group), or a placebo vaccine (placebo group). Participants, investigators, and personnel responsible for collecting safety data and analysing blood and stool samples were masked to group assignment. Personnel responsible for study product preparation and administration were not masked to group assignment. One dose (0·5 mL) of C difficile vaccine candidate or placebo vaccine was administered intramuscularly on days 0, 7, and 30. The primary outcome was the efficacy of the vaccine in preventing symptomatic C difficile infection, defined as having three or more loose stools in a period of 24 h or less, loose stools for 24 h or more, and a PCR-positive test for C difficile toxin B in a loose stool sample, within 3 years after the final vaccine dose. The primary outcome was measured in the modified intention-to-treat population (ie, all participants who received at least one injection of the assigned vaccine). The safety of the vaccine was assessed in the safety analysis set (ie, all participants who had received at least one injection, analysed according to the product received). This study is registered with WHO/ICTRP, number U111-1127-7162, and ClinicalTrials.gov, number NCT01887912, and has been terminated. FINDINGS Between July 30, 2013, and Nov 17, 2017, we enrolled and randomly assigned 9302 participants to the C difficile vaccine candidate group (n=6201) or to the placebo group (n=3101). 6173 (99·5%) participants in the C difficile vaccine candidate group and 3085 (99·5%) participants in the placebo group received at least one dose of the vaccine. The study was terminated after the first planned interim analysis because of futility. In the C difficile vaccine candidate group, 34 C difficile infections were reported over 11 697·2 person-years at risk (0·29 infections per 100 person-years [95% CI 0·20-0·41]) compared with 16 C difficile infections over 5789·4 person-years at risk in the placebo group (0·28 infections per 100 person-years [0·16-0·45]), indicating a vaccine efficacy of -5·2% (95% CI -104·1 to 43·5). In the C difficile vaccine candidate group, 2847 (46·6%) of 6113 participants reported an adverse event within 30 days of injection compared with 1282 (41·9%) of 3057 participants in the placebo group. The proportion of participants who had an adverse event leading to study discontinuation was 4·8% in both groups (296 participants in the C difficile vaccine candidate group and 146 participants in the placebo group). 1662 (27·2%) participants in the C difficile vaccine candidate group reported at least one serious adverse event compared with 851 (27·8%) participants in the placebo group. INTERPRETATION In adults at risk for C difficile infection, a bivalent C difficile toxoid vaccine did not prevent C difficile infection. Since the C difficile vaccine candidate met the criteria for futility, the study was terminated and clinical development of this vaccine candidate was stopped. FUNDING Sanofi Pasteur.
Collapse
Affiliation(s)
| | - David L Gordon
- Department of Infectious Diseases and Microbiology, SA Pathology, Flinders Medical Centre, Bedford Park, SA, Australia
| | | | - Paul Tambyah
- National University of Singapore and National University Health System, Singapore
| | | | | | | | | | | | | | - Julian Torre-Cisneros
- Hospital Universitario Reina Sofia-IMIBIC, University of Cordoba, Spanish Network for Research in Infectious Disease, Cordoba, Spain
| | | | | | | | - Odile Launay
- Université Paris Descartes, Assistance Publique Hôpitaux de Paris, Hôpital Cochin, Paris, France
| | | | - Rayo Morfin-Otero
- Antiguo Hospital Civil de Guadalajara Fray Antonio Alcalde, Guadalajara, Mexico
| | | | - Yoon Soo Park
- Department of Internal Medicine, National Health Insurance Service, Ilsan Hospital, Goyang, Korea
| | | | | | | | - Steve Self
- Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | | |
Collapse
|
14
|
Ojeda J, Arredondo JL, Salcedo P, Paredes-Paredes M, Dupuy M, Petit C, Chabanon AL, Rivas E, Gurunathan S, De Bruijn I, Pepin S. Immunogenicity and safety of a multi-dose quadrivalent inactivated influenza vaccine in individuals aged 6 months to 17 years: a randomized phase III trial. Hum Vaccin Immunother 2020; 16:1380-1384. [PMID: 31810418 PMCID: PMC7482911 DOI: 10.1080/21645515.2019.1697595] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Annual vaccination is the most effective way to prevent seasonal influenza. Influenza vaccines in multi-dose vial (MDV) formats can facilitate timely vaccination of large populations by reducing per-dose costs and cold storage requirements compared to single-dose pre-filled syringe (PFS) formats. MDV vaccines require thiomersal or another preservative to prevent microbial contamination. We conducted a randomized, open-label trial in 302 healthy subjects aged 6 months to 17 years to evaluate the immunogenicity and safety of a quadrivalent influenza vaccine (QIV) in a thiomersal-containing MDV format compared to the licensed thiomersal-free PFS format. Subjects were randomly assigned in a 1:1 ratio to receive the MDV (n = 153) or PFS (n = 149) format. Post-vaccination hemagglutination inhibition titers for all four vaccine strains were ≥4.9-fold higher than baseline titers with no difference in magnitude between the MDV and PFS groups. Seroconversion rates per strain were also comparable between the two groups. There were no differences in reactogenicity or safety between the two vaccine formats. These results showed that the MDV format of QIV was as safe and immunogenic as the PFS format in infants, children, and adolescents. These findings support the use of MDV QIV as a resource-saving alternative for seasonal influenza vaccination.
Collapse
Affiliation(s)
- Joyce Ojeda
- Global Clinical Science, Sanofi Pasteur , Mexico City, Mexico
| | - José Luis Arredondo
- Instituto Nacional de Pediatría, Unidad de Investigación Clínica , Mexico City, Mexico
| | - Perla Salcedo
- Hospital General de Ecatepec "Las Américas", Fraccionamiento las Américas , Ecatepec de Morelos, Mexico
| | | | - Martin Dupuy
- Global Biostatistical Sciences, Sanofi Pasteur , Marcy l'Étoile, France
| | - Celine Petit
- Global Clinical Immunology, Sanofi Pasteur , Marcy l'Étoile, France
| | | | - Enrique Rivas
- Global Clinical Sciences, Sanofi Pasteur , Mexico City, Mexico
| | | | - Iris De Bruijn
- Global Clinical Sciences, Sanofi Pasteur , Marcy l'Étoile, France
| | - Stephanie Pepin
- Global Clinical Sciences, Sanofi Pasteur , Marcy l'Étoile, France
| |
Collapse
|
15
|
Abstract
Objetivo: Determinar si las variables: turno de trabajo, situación laboral, el realizar horas laborales extras y servicio en el que se encuentra actualmente, establecen diferencias en el nivel con que se presenta el síndrome de Burnout en los profesionales de enfermería del Hospital Materno Infantil de la ciudad de Durango.
Método: Se realizó un estudio correlacional, transversal y no experimental a partir de la aplicación del Maslach Burnout Inventory‐General Survey, a 204 enfermeras/os del Hospital Materno Infantil de la ciudad de Durango, en México.
Resultados: De las cuatro variables estudiadas (turno de trabajo, situación laboral, el realizar horas laborales extras y servicio en el que se encuentra actualmente), es la del turno laboral la que marca una diferencia significativa en el nivel en que se presenta el síndrome de Burnout en el personal de enfermería.
Conclusiones: Las condiciones laborales pueden desencadenar situaciones estresantes que a la larga generen el síndrome de Burnout, tal es el caso de variables como turno en que se labora o el tipo de nombramiento laboral que se posea. La aparición de este síndrome afecta el desempeño profesional del personal de enfermería.
Collapse
|
16
|
Hinton L, Rivas E, Delgadillo Alfaro E, Elizarraras E, Smith A, Jafri A, Kravitz R, Apesoa-Varano E. FEASIBILITY OF A FAMILY-CENTERED PRIMARY CARE DEPRESSION INTERVENTION IN A SAFETY-NET CLINIC. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.4479] [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: 11/13/2022] Open
Affiliation(s)
- L. Hinton
- Psychiatry and Behavioral Sciences, University of California, Davis, Sacramento, California,
| | - E. Rivas
- Psychiatry and Behavioral Sciences, University of California, Davis, Sacramento, California,
| | - E. Delgadillo Alfaro
- Psychiatry and Behavioral Sciences, University of California, Davis, Sacramento, California,
| | - E. Elizarraras
- Psychiatry and Behavioral Sciences, University of California, Davis, Sacramento, California,
| | - A. Smith
- San Joaquin General Hospital, Stockton, California
| | - A. Jafri
- San Joaquin General Hospital, Stockton, California
| | - R. Kravitz
- Psychiatry and Behavioral Sciences, University of California, Davis, Sacramento, California,
| | - E. Apesoa-Varano
- Psychiatry and Behavioral Sciences, University of California, Davis, Sacramento, California,
| |
Collapse
|
17
|
Taura P, Martinez-Palli G, Blasi A, Rivas E, Beltran J, Balust J. Intraoperative Management of High-Risk Liver Transplant Recipients: Concerns and Challenges. Transplant Proc 2017; 48:2491-2494. [PMID: 27742332 DOI: 10.1016/j.transproceed.2016.08.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Liver transplantation (LT) offers patients with liver disease a real chance for long-term survival. In the past decade, successful survival after LT along with the Model for End-Stage Liver Disease-based allocation policy have increased willingness to accept patients with a higher risk profile and marginal organs and to prioritize the sickest patients on the waiting list. Therefore, the anesthesiologist now deals with very challenging patients. In the present review, we aimed to highlight key aspects of intraoperative LT management in high-risk patients and to place these aspects in the perspective of their impact on perioperative outcomes. Conservative standardized perioperative strategies mandate a switch toward accurate and tailored perioperative anesthetic care to maintain the steady improvement in recipient survival rates after LT. In our opinion, continuous assessment of fluid status and cardiac performance, strategies promoting graft decongestion, rational hemostatic management, and the identification of LT recipients with potential risk of vascular complications should constitute the cornerstone of intraoperative management.
Collapse
Affiliation(s)
- P Taura
- Department of Anesthesiology, Hospital Clinic, University of Barcelona, Barcelona, Spain.
| | - G Martinez-Palli
- Department of Anesthesiology, Hospital Clinic, University of Barcelona, Barcelona, Spain; Instituto de Investigaciones Biomédicas August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - A Blasi
- Department of Anesthesiology, Hospital Clinic, University of Barcelona, Barcelona, Spain; Instituto de Investigaciones Biomédicas August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - E Rivas
- Department of Anesthesiology, Hospital Clinic, University of Barcelona, Barcelona, Spain
| | - J Beltran
- Department of Anesthesiology, Hospital Clinic, University of Barcelona, Barcelona, Spain
| | - J Balust
- Department of Anesthesiology, Hospital Clinic, University of Barcelona, Barcelona, Spain
| |
Collapse
|
18
|
Avila-Polo R, Rivas E, Cabrera-Serrano M, Carbonell P, Rojas-Marcos I, Morgado Y, Servian E, Madruga M, Marquez C, Paradas C. Utrophin immunohistochemical expression in neuromuscular disorders. Neuromuscul Disord 2016. [DOI: 10.1016/j.nmd.2016.06.434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
19
|
Rivas E, Avila R, Marquez C, Paradas C, Castellanos F. Pathology of criocopharyngeal muscles in oculopharyngeal muscular dystrophy (OPMD): A quantitative histological and histochemical study. Neuromuscul Disord 2016. [DOI: 10.1016/j.nmd.2016.06.197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
20
|
Rojas-Marcos I, Rubí J, Blázquez A, Carbonell P, De Torres R, Domínguez-Mayoral A, Ávilla R, Martín-Casanueva M, Gutiérrez C, Márquez-Infante C, Rivas E, Paradas C, Domínguez-González C. Late onset riboflavin responsive lipid myopathy with multiple acyl-CoA dehydrogenase deficiency: Report of four patients. Neuromuscul Disord 2016. [DOI: 10.1016/j.nmd.2016.06.415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
21
|
Pepin S, Szymanski H, Rochín Kobashi IA, Villagomez Martinez S, González Zamora JF, Brzostek J, Huang LM, Chiu CH, Chen PY, Ahonen A, Forstén A, Seppä I, Quiroz RF, Korhonen T, Rivas E, Monfredo C, Hutagalung Y, Menezes J, Vesikari T. Safety and immunogenicity of an intramuscular quadrivalent influenza vaccine in children 3 to 8 y of age: A phase III randomized controlled study. Hum Vaccin Immunother 2016; 12:3072-3078. [PMID: 27565435 PMCID: PMC5215516 DOI: 10.1080/21645515.2016.1212143] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [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] [Indexed: 11/04/2022] Open
Abstract
A quadrivalent, inactivated, split-virion influenza vaccine containing a strain from both B lineages (IIV4) has been developed, but its safety and immunogenicity in young children has not been described. This was a phase III, randomized, double-blind, active-controlled, multi-center study to examine the immunogenicity and safety of IIV4 in children 3–8 y of age (EudraCT no. 2011-005374-33). Participants were randomized 5:1:1 to receive the 2013/2014 Northern Hemisphere formulation of IIV4, an investigational trivalent comparator (IIV3) containing the B/Victoria lineage strain, or the licensed Northern Hemisphere IIV3 containing the B/Yamagata lineage strain. Participants who had not previously received a full influenza vaccination schedule received 2 doses of vaccine 28 d apart; all others received a single dose. 1242 children were included. For all 4 strains, IIV4 induced geometric mean haemagglutination inhibition titres non-inferior to those induced by the IIV3 comparators. For both B strains, geometric mean antibody titres induced by IIV4 were superior to those induced by the IIV3 with the alternative lineage strain. Similar proportions of participants vaccinated with IIV4 and IIV3 reported solicited injection-site reactions, solicited systemic reactions, and vaccine-related adverse events. A single vaccine-related serious adverse event, thrombocytopenia, was reported 9 d after vaccination with IIV4 and resolved without sequelae. In conclusion, in children aged 3–8 y who received one dose or 2 doses 28 d apart, IIV4 had an acceptable safety profile, was as immunogenic as IIV3 for the shared strains, and had superior immunogenicity for the additional B strain.
Collapse
Affiliation(s)
| | - Henryk Szymanski
- b Department of Pediatrics , St. Hedvig of Silesia Hospital , Trzebnica , Poland
| | | | - Sandra Villagomez Martinez
- d Instituto Nacional de Pediatria, Centro Pediátrico de Investigación Comunitario-Tlaltizapan , Tlaltizapan , Morelos , Mexico
| | - José Francisco González Zamora
- e Instituto Nacional de Pediatria, Unidad de Apoyo a la Investigación Clinica - Planta Baja Insurgentes Sur #3700-C , Coyoacán, Mexico , D.F
| | - Jerzy Brzostek
- f Zespół Opieki Zdrowotnej , Poradnia Chorób Zakaźnych , Dębica , Poland
| | - Li-Min Huang
- g National Taiwan University Hospital, Department of Pediatrics , Division of Infectious Diseases 7 , Taipei , Taiwan, R.O.C
| | - Cheng-Hsun Chiu
- h Department of Pediatrics , Chang Gung Children's Hospital, Chang Gung University , Kweishan, Taoyuan , Taiwan, R.O.C
| | - Po-Yen Chen
- i Taichung Veterans General Hospital , Taichung , Taiwan, R.O.C
| | - Anitta Ahonen
- j Vaccine Research Centre , University of Tampere Medical School , Tampere , Finland
| | - Aino Forstén
- j Vaccine Research Centre , University of Tampere Medical School , Tampere , Finland
| | - Ilkka Seppä
- j Vaccine Research Centre , University of Tampere Medical School , Tampere , Finland
| | - René Farfán Quiroz
- k Hospital Infantil de Tlaxcala , Calle 20 de Noviembre s/n, Carretera a San Damian Tlacocalpan, Km. 2.5 San Matías Tepetomatitlan, Municipio de Apetatitlan de Antonio Carvajal, Tlaxcala , Mexico
| | - Tiina Korhonen
- j Vaccine Research Centre , University of Tampere Medical School , Tampere , Finland
| | | | | | | | | | - Timo Vesikari
- j Vaccine Research Centre , University of Tampere Medical School , Tampere , Finland
| |
Collapse
|
22
|
Dayan G, Arredondo JL, Carrasquilla G, Deseda CC, Dietze R, Luz K, Costa MSN, Cunha RV, Rey LC, Morales J, Reynales H, Miranda M, Zambrano B, Rivas E, Garbes P, Noriega F. Prospective cohort study with active surveillance for fever in four dengue endemic countries in Latin America. Am J Trop Med Hyg 2015; 93:18-23. [PMID: 26013373 PMCID: PMC4497892 DOI: 10.4269/ajtmh.13-0663] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [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: 11/15/2013] [Accepted: 10/11/2014] [Indexed: 11/07/2022] Open
Abstract
To prepare for a Phase III dengue vaccine efficacy trial, 20 investigational sites were selected for this observational study to identify dengue infections in a closed cohort (N = 3,000 children 9-16 years of age). Of 255 acute febrile episodes experienced by 235 children, 50 (21.3%) were considered serologically probable dengue, and 18 (7.7%) were considered virologically confirmed (i.e., dengue NS1 antigen positive) dengue cases. Considering the disease-free and at-risk period from study start to onset of symptoms, the overall incidence density of acute febrile episodes was 17.7 per 100 person-years of follow-up, ranging from 15.3 in Colombia to 22.0 in Puerto Rico. This study showed that all sites were capable of capturing and following up acute febrile episodes within a specific timeframe among the established cohort and to detect dengue cases.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | - Enrique Rivas
- Clinical Research and Development, Sanofi Pasteur, Sao Paulo, Brazil; Instituto Nacional de Pediatria, Unidad de Apoyo a la Investigación Clínica, Mexico City, Mexico; Centro de Estudios de Investigación en Salud, Fundación Santa Fe de Bogotá, Bogotá, Colombia; Caribbean Travel Medicine Clinic, San Juan, Puerto Rico; Nucleo de Doenças Infecciosas, Universidade Federal do Espírito Santo, Vitória, Espírito Santo, Brazil; Hospital Infantil Varela Santiago, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil; Hospital Universitário, Universidade Federal de Goiás, Goiania, Goias, Brazil; Hospital Universitário, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil; Instituto de Biomedicina, Unidade de Pesquisas Clínicas, Universidade Federal do Ceará, Fortaleza, Ceará, Brazil; Clinical Research Puerto Rico, Guayama, Puerto Rico; Centro de Atención e Investigación Médica, Bogotá, Colombia; Clinical Research and Development, Sanofi Pasteur, Bogotá, Colombia; Clinical Research and Development, Sanofi Pasteur, Montevideo, Uruguay; Clinical Research and Development, Sanofi Pasteur, Mexico City, Mexico; Clinical Research and Development, Sanofi Pasteur, Swiftwater, Pennsylvania
| | | | | |
Collapse
|
23
|
Villar L, Dayan GH, Arredondo-García JL, Rivera DM, Cunha R, Deseda C, Reynales H, Costa MS, Morales-Ramírez JO, Carrasquilla G, Rey LC, Dietze R, Luz K, Rivas E, Miranda Montoya MC, Cortés Supelano M, Zambrano B, Langevin E, Boaz M, Tornieporth N, Saville M, Noriega F. Efficacy of a tetravalent dengue vaccine in children in Latin America. N Engl J Med 2015; 372:113-23. [PMID: 25365753 DOI: 10.1056/nejmoa1411037] [Citation(s) in RCA: 666] [Impact Index Per Article: 74.0] [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: 01/09/2023]
Abstract
BACKGROUND In light of the increasing rate of dengue infections throughout the world despite vector-control measures, several dengue vaccine candidates are in development. METHODS In a phase 3 efficacy trial of a tetravalent dengue vaccine in five Latin American countries where dengue is endemic, we randomly assigned healthy children between the ages of 9 and 16 years in a 2:1 ratio to receive three injections of recombinant, live, attenuated, tetravalent dengue vaccine (CYD-TDV) or placebo at months 0, 6, and 12 under blinded conditions. The children were then followed for 25 months. The primary outcome was vaccine efficacy against symptomatic, virologically confirmed dengue (VCD), regardless of disease severity or serotype, occurring more than 28 days after the third injection. RESULTS A total of 20,869 healthy children received either vaccine or placebo. At baseline, 79.4% of an immunogenicity subgroup of 1944 children had seropositive status for one or more dengue serotypes. In the per-protocol population, there were 176 VCD cases (with 11,793 person-years at risk) in the vaccine group and 221 VCD cases (with 5809 person-years at risk) in the control group, for a vaccine efficacy of 60.8% (95% confidence interval [CI], 52.0 to 68.0). In the intention-to-treat population (those who received at least one injection), vaccine efficacy was 64.7% (95% CI, 58.7 to 69.8). Serotype-specific vaccine efficacy was 50.3% for serotype 1, 42.3% for serotype 2, 74.0% for serotype 3, and 77.7% for serotype 4. Among the severe VCD cases, 1 of 12 was in the vaccine group, for an intention-to-treat vaccine efficacy of 95.5%. Vaccine efficacy against hospitalization for dengue was 80.3%. The safety profile for the CYD-TDV vaccine was similar to that for placebo, with no marked difference in rates of adverse events. CONCLUSIONS The CYD-TDV dengue vaccine was efficacious against VCD and severe VCD and led to fewer hospitalizations for VCD in five Latin American countries where dengue is endemic. (Funded by Sanofi Pasteur; ClinicalTrials.gov number, NCT01374516.).
Collapse
Affiliation(s)
- Luis Villar
- The authors' affiliations are listed in the Appendix
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
24
|
Rivas E, Vissing J, Scoto M, Fernandez-Fuente M, Voit T, Muntoni F, Brown S. G.P.320. Neuromuscul Disord 2014. [DOI: 10.1016/j.nmd.2014.06.410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
25
|
Rivas E, Phadke R, Ellis M, Chambers D, Feng L, Sewry C. G.P.36. Neuromuscul Disord 2014. [DOI: 10.1016/j.nmd.2014.06.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
26
|
Langley RG, Elewski BE, Lebwohl M, Reich K, Griffiths CEM, Papp K, Puig L, Nakagawa H, Spelman L, Sigurgeirsson B, Rivas E, Tsai TF, Wasel N, Tyring S, Salko T, Hampele I, Notter M, Karpov A, Helou S, Papavassilis C. Secukinumab in plaque psoriasis--results of two phase 3 trials. N Engl J Med 2014; 371:326-38. [PMID: 25007392 DOI: 10.1056/nejmoa1314258] [Citation(s) in RCA: 1412] [Impact Index Per Article: 141.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
BACKGROUND Interleukin-17A is considered to be central to the pathogenesis of psoriasis. We evaluated secukinumab, a fully human anti-interleukin-17A monoclonal antibody, in patients with moderate-to-severe plaque psoriasis. METHODS In two phase 3, double-blind, 52-week trials, ERASURE (Efficacy of Response and Safety of Two Fixed Secukinumab Regimens in Psoriasis) and FIXTURE (Full Year Investigative Examination of Secukinumab vs. Etanercept Using Two Dosing Regimens to Determine Efficacy in Psoriasis), we randomly assigned 738 patients (in the ERASURE study) and 1306 patients (in the FIXTURE study) to subcutaneous secukinumab at a dose of 300 mg or 150 mg (administered once weekly for 5 weeks, then every 4 weeks), placebo, or (in the FIXTURE study only) etanercept at a dose of 50 mg (administered twice weekly for 12 weeks, then once weekly). The objective of each study was to show the superiority of secukinumab over placebo at week 12 with respect to the proportion of patients who had a reduction of 75% or more from baseline in the psoriasis area-and-severity index score (PASI 75) and a score of 0 (clear) or 1 (almost clear) on a 5-point modified investigator's global assessment (coprimary end points). RESULTS The proportion of patients who met the criterion for PASI 75 at week 12 was higher with each secukinumab dose than with placebo or etanercept: in the ERASURE study, the rates were 81.6% with 300 mg of secukinumab, 71.6% with 150 mg of secukinumab, and 4.5% with placebo; in the FIXTURE study, the rates were 77.1% with 300 mg of secukinumab, 67.0% with 150 mg of secukinumab, 44.0% with etanercept, and 4.9% with placebo (P<0.001 for each secukinumab dose vs. comparators). The proportion of patients with a response of 0 or 1 on the modified investigator's global assessment at week 12 was higher with each secukinumab dose than with placebo or etanercept: in the ERASURE study, the rates were 65.3% with 300 mg of secukinumab, 51.2% with 150 mg of secukinumab, and 2.4% with placebo; in the FIXTURE study, the rates were 62.5% with 300 mg of secukinumab, 51.1% with 150 mg of secukinumab, 27.2% with etanercept, and 2.8% with placebo (P<0.001 for each secukinumab dose vs. comparators). The rates of infection were higher with secukinumab than with placebo in both studies and were similar to those with etanercept. CONCLUSIONS Secukinumab was effective for psoriasis in two randomized trials, validating interleukin-17A as a therapeutic target. (Funded by Novartis Pharmaceuticals; ERASURE and FIXTURE ClinicalTrials.gov numbers, NCT01365455 and NCT01358578, respectively.).
Collapse
Affiliation(s)
- Richard G Langley
- From Dalhousie University, Halifax, NS (R.G.L.), Clinical Research (K.P.) and Probity Medical Research (K.P., L.S.), Waterloo, ON, and Stratica Medical and Probity Medical Research, Edmonton, AB (N.W.) - all in Canada; University of Alabama, Birmingham (B.E.E.); Mount Sinai Hospital, New York (M.L.); Dermatologikum Hamburg and Georg-August-Universität, Göttingen, Germany (K.R.); Dermatology Centre, Salford Royal Hospital, University of Manchester, Manchester Academic Health Science Centre, Manchester, United Kingdom (C.E.M.G.); Hospital de Sant Pau, Barcelona (L.P.); Jikei University School of Medicine, Tokyo (H.N.); Veracity Clinical Research, Woolloongabba, QLD, Australia (L.S.); Faculty of Medicine, Department of Dermatology, University of Iceland, Reykjavik (B.S.); Dermos, Guatemala City, Guatemala (E.R.); Department of Dermatology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei (T.-F.T.); University of Texas Health Science Center and Center for Clinical Studies, Houston (S.T.); and Novartis Pharma, Basel, Switzerland (T.S., I.H., M.N., A.K., S.H., C.P.)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Stevens E, Rivas E, Belaya K, Sframeli M, Maxwell S, Torelli S, Martin P, Cossins J, Beeson D, Muntoni F. P60 Shared defective glycosylation pathways link congenital myasthenic syndromes with the dystroglycanopathies. Neuromuscul Disord 2014. [DOI: 10.1016/s0960-8966(14)70076-8] [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]
|
28
|
Díaz-Castro J, Pulido M, Alférez M, Ochoa J, Rivas E, Hijano S, López-Aliaga I. Goat milk consumption modulates liver divalent metal transporter 1 (DMT1) expression and serum hepcidin during Fe repletion in Fe-deficiency anemia. J Dairy Sci 2014; 97:147-54. [DOI: 10.3168/jds.2013-7250] [Citation(s) in RCA: 9] [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] [Received: 07/12/2013] [Accepted: 10/01/2013] [Indexed: 01/28/2023]
|
29
|
Martínez-Criado Y, Cabello R, Fernández-Pineda I, Márquez C, Ramírez G, Rivas E, Robles MJ, Pardal R, Vega FM. [Study of the expression of neural stem cell markers in neuroblastoma tumor samples and correlation with prognostic factors]. Cir Pediatr 2013; 26:112-118. [PMID: 24482902] [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: 06/03/2023]
Abstract
INTRODUCTION The existence of cancer stem cells (CSC) in neuroblastoma (NB) has been associated with the development of metastasis, resistance to chemotherapy and recurrence. Our objective is to analyze the expression of proliferation and differentiation markers of neural progenitor cells in NB samples, and to correlate this expression with clinical variables such as histology, genetics and response to conventional therapy. MATERIAL AND METHODS We performed a retrospective-experimental study with neuroblastoma samples obtained from biopsies or tumor resections between 2010-2012 in our Hospital. Fluorescence immunohistochemistry was used to analyze the expression of the different markers: CD44, CD74, CD133, tyrosine hydroxylase, endothelin receptors type A (ETA) and B (ETB), p75, nestina y and Phox2b, all of them related to neural stem cell biology. The level of expression of the markers was then correlated with clinical variables. RESULTS Nestin expression was positive in 72.2% of samples and ETA in 66.7%. PHOX2B and CD74 expression were lower, being positive in less than 30%. The markers CD44, ETB and PHOX2B were expressed in more aggressive tumors. ETA expression correlated significantly with unfavorable histology tumors (p= 0.01), N-myc amplification (p= 0.05) and recurrence/progression (p= 0.05). CONCLUSION The expression of CD44, ETB and ETA was associated with more aggressive tumors and poor prognostic factors. These markers are in the membrane of neural stem cells and may be useful to identify and isolate by flow cytometry CSCs of NB for the study of new therapeutic targets.
Collapse
Affiliation(s)
- Y Martínez-Criado
- Servicio de Cirugía Pediátrica, Hospital Infantil Virgen del Rocío, Sevilla.
| | - R Cabello
- Servicio de Cirugía Pediátrica, Hospital Infantil Virgen del Rocío, Sevilla
| | - I Fernández-Pineda
- Servicio de Cirugía Pediátrica, Hospital Infantil Virgen del Rocío, Sevilla
| | - C Márquez
- Servicio de Oncología Pediátrica, Hospital Infantil Virgen del Rocío, Sevilla
| | - G Ramírez
- Servicio de Oncología Pediátrica, Hospital Infantil Virgen del Rocío, Sevilla
| | - E Rivas
- Servicio de Anatomía Patológica, Hospital Universitario Virgen del Rocío, Sevilla
| | - M J Robles
- Servicio de Anatomía Patológica, Hospital Universitario Virgen del Rocío, Sevilla
| | - R Pardal
- Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Dpto. de Fisiología Médica y Biofísica, Sevilla
| | - F M Vega
- Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Dpto. de Fisiología Médica y Biofísica, Sevilla
| |
Collapse
|
30
|
Miriam N, Rivas E, Moran P, Valadez A, Garcia MDC, Rojas L, Oswaldo PR, Hernandez E, Cerritos R, Ximenez C. Effect of Entamoeba histolytica calreticulin in the immune response of patients with acute amoebic liver abscess. Front Immunol 2013. [DOI: 10.3389/conf.fimmu.2013.02.00763] [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: 11/13/2022] Open
|
31
|
Rivas E, Ubré M, Martínez-Pallí G, Valero R, Beltran J, López A, Balust J. [Fibreoptic clinical training in anaesthesia. Course design and results based on a self-assessment survey]. Rev Esp Anestesiol Reanim 2012; 59:483-488. [PMID: 22921112 DOI: 10.1016/j.redar.2012.06.012] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2011] [Accepted: 06/06/2012] [Indexed: 06/01/2023]
Abstract
BACKGROUND AND OBJECTIVE Fibreoptic intubation is the technique of choice for resolving complications related to a difficult airway. Our aim was to determine whether a clinical-practice-based, individualized course provides sufficient training and confidence to allow anaesthetists to routinely practice fibreoptic intubation. METHODS Our hospital developed a clinical-practice-based, individualized course on fibreoptic intubation in general anaesthesia that provided practice in sedated spontaneously breathing patients and insertion through supraglottic devices. From 2005 to 2009, we e-mailed participants for response to an anonymous online self-assessment survey. We asked participants about the training outcomes and their overall degree of satisfaction. RESULTS Seventy-seven participants were sent the questionnaire six months after the course and 61% responded. All respondents considered themselves skilled in handling the bronchoscope at the end of the course and 97% used it in their routine practice in patients with difficult airways. CONCLUSIONS These results suggest a high success rate can be expected from individually tailored fibreoptic intubation courses that supplement theory and mannequin experience with clinical practice.
Collapse
Affiliation(s)
- E Rivas
- Servicio de Anestesiología, Reanimación y Terapia del Dolor, Hospital Clínic de Barcelona, Universitat de Barcelona, España.
| | | | | | | | | | | | | |
Collapse
|
32
|
Juan-Mateu J, Paradas C, Olivé M, Verdura E, Rivas E, González-Quereda L, Rodríguez MJ, Baiget M, Gallano P. Isolated cardiomyopathy caused by a DMD nonsense mutation in somatic mosaicism: genetic normalization in skeletal muscle. Clin Genet 2011; 82:574-8. [PMID: 22092019 DOI: 10.1111/j.1399-0004.2011.01814.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
X-linked dilated cardiomyopathy is a pure cardiac dystrophinopathy phenotype mainly caused by DMD mutations that present a specific transcription effect in cardiac tissue. We report a 26-year-old male who presented with severe dilated cardiomyopathy and high creatine kinase. The patient did not complain of skeletal muscle weakness. A muscle biopsy showed mild dystrophic changes and a low proportion of dystrophin-negative fibres. A molecular study identified a nonsense DMD mutation (p.Arg2098X) in somatic mosaicism. The ratio of mutant versus normal allele in blood and skeletal muscle suggests selective pressure against mutant muscle cells, a process known as genetic normalization. We hypothesize that this process may have mitigated skeletal muscle symptoms in this patient. This is the second report of a DMD somatic mosaic with evidence of genetic normalization in muscle. Somatic DMD mutations should be considered in patients presenting with idiopathic dilated cardiomyopathy.
Collapse
Affiliation(s)
- J Juan-Mateu
- Genetics Department, Hospital Sant Pau, CIBERER, Barcelona, Spain
| | | | | | | | | | | | | | | | | |
Collapse
|
33
|
Juan-Mateu J, Verdura E, Rodriguez M, Gonzalez-Quereda L, Colomer J, Díaz-Manera J, Gallardo E, Gonzalez-Mera L, Macaya A, Munell F, Nascimento A, Navarro C, Olive M, Pascual J, Pou A, Rivas E, Roig M, Baiget M, Gallano P, Madruga M, Jimenez-Mallebrera C. P1.18 Dystrophinopathy in manifesting female carriers: Clinical and genetic characterization in a cohort of 20 patients. Neuromuscul Disord 2011. [DOI: 10.1016/j.nmd.2011.06.778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
34
|
Martínez Palli G, Ubré M, Rivas E, Blasi A, Borrat X, Pujol R, Taurà RP, Balust J. [An established anesthesia team-care model: over 12000 cases in a digestive endoscopy unit]. Rev Esp Anestesiol Reanim 2011; 58:406-411. [PMID: 22046861 DOI: 10.1016/s0034-9356(11)70103-7] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
BACKGROUND AND OBJECTIVE The growing demand for digestive and other endoscopic procedures outside the operating room, both in terms of type of endoscopy and number of patients, requires reorganization of the anesthesiology department's workload. We describe 2 years of our hospital digestive endoscopy unit's experience with a now well-established care model involving both anesthesiologists and nurse anesthetists. MATERIAL AND METHODS After previously reviewing the medical records of outpatients and conducting a telephone interview about state of health, nurse anesthetists administered a combination of propofol and remifentanil through a target-controlled infusion system under an anesthesiologist's direct supervision. RESULTS The ratio of anesthesiologists to nurses ranged from 1:2 to 1:3 according to the complexity of the examination procedure. Over 12000 endoscopies (simple to advanced) in a total of 11853 patients were performed under anesthesia during the study period. Airway management maneuvers were required by 4.9% of the patients; 0.18% required bag ventilation for respiratory depression, and 0.084% required bolus doses of a vasopressor to treat hypotension or atropine to treat bradycardia. The procedure had to be halted early in 9 patients (0.07%). No patient required orotracheal intubation and none died. Nor were any complications related to sedation recorded. CONCLUSION The results suggest that this care model can safely accommodate a large caseload in anesthesia at an optimum level of quality.
Collapse
Affiliation(s)
- G Martínez Palli
- Servicio de Anestesiología y Reanimación, Sección del Instituto de Enfermedades Digestivas, Hospital Clinic de Barcelona.
| | | | | | | | | | | | | | | |
Collapse
|
35
|
Juan-Mateu J, Rodrı´guez M, González-Quereda L, Colomer J, Nascimento A, Cabello A, Rivas E, Madruga M, Paradas C, Olivé M, Gallano P. G.P.13.09 Muscle biopsy mRNA-based analysis of point mutations in DMD gene in Spanish patients. Neuromuscul Disord 2009. [DOI: 10.1016/j.nmd.2009.06.304] [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]
|
36
|
Ojeda Burgos G, Cuenca A, de la Cruz Cosme C, Pérez E, Vicioso L, Aguilar R, Rivas E. Síndrome confusional en paciente con hiponatremia severa. Rev Clin Esp 2008; 208:49-51. [DOI: 10.1157/13115008] [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: 11/21/2022]
|
37
|
Abstract
Rats learn to avoid palatable saccharin solutions that predict the systemic administration of reinforcing drugs as well as malaise-inducing lithium chloride (conditioned saccharin avoidance, CSA). In the present study the involvement of dopamine (DA) transmission in the acquisition of morphine, nicotine and lithium-conditioned CSA was investigated in a two-bottle choice paradigm. Nicotine tartrate (0.2 and 0.4 mg/kg s.c.) administered 15 min after saccharin presentation induced CSA, with a maximum effect at 0.4 mg/kg. The DA D1 receptor antagonist, SCH 39166 (0.1 mg/kg s.c.) and the DA D2 receptor antagonist raclopride (0.3 mg/kg s.c.), administered immediately after saccharin, prevented CSA induced by the lower but not by the higher dose of nicotine. However, combined administration of the two antagonists prevented CSA induced by the higher dose of nicotine. SCH 39166 prevented CSA induced by all morphine doses while raclopride prevented only CSA induced by the lowest dose of morphine (1.75 mg/kg). CSA induced by different doses of lithium given by the same schedule of drug-CSA (i.e. two pairings, 15 min after saccharin) was not affected by SCH 39166. However SCH 39166 impaired the acquisition of lithium-CSA when lithium was given 60 min after saccharin. In contrast, raclopride failed to affect lithium-CSA independently from the delay between saccharin and lithium. These results suggest that DA can play different roles in drug- and in lithium-CSA and are consistent with a different mechanism of drug- as compared to lithium-CSA.
Collapse
Affiliation(s)
- S Fenu
- Department of Toxicology, Centre of Excellence for Studies on the Neurobiology of Addiction, University of Cagliari and Institute of Neuroscience, Consiglio Nazionale delle Ricerche, 09124 Cagliari, Italy
| | | | | |
Collapse
|
38
|
Sobrido MJ, Fernández JM, Fontoira E, Pérez-Sousa C, Cabello A, Castro M, Teijeira S, Alvarez S, Mederer S, Rivas E, Seijo-Martínez M, Navarro C. Autosomal dominant congenital fibre type disproportion: a clinicopathological and imaging study of a large family. Brain 2005; 128:1716-27. [PMID: 15857933 DOI: 10.1093/brain/awh511] [Citation(s) in RCA: 15] [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: 11/14/2022] Open
Abstract
Congenital fibre type disproportion (CFTD) is considered a non-progressive or slowly progressive muscle disease with relative smallness of type 1 fibres on pathological examination. Although generally benign, CFTD has a variable natural course and severe progression has been observed in some patients. The pathogenesis of the disorder is unknown and many authors consider CFTD a syndrome with multiple aetiologies rather than a separate clinical entity. A positive family history has been reported in about 40% of cases, but the inheritance pattern is not clear. Both autosomal recessive and dominant modes of inheritance have been suggested. The present paper describes a large, multigenerational kindred that has an inherited myopathy fulfilling the histological criteria of CFTD, with autosomal dominant transmission and high penetrance. The clinical picture, remarkably similar in all affected family members, started in early infancy with mild limb muscle weakness. There was slow progression of symptoms into adulthood, with moderate to severe, mainly proximal, muscle weakness without loss of ambulation. Muscle biopsy from two affected individuals demonstrated predominance of small type 1 muscle fibres without other significant findings. Nerve conduction studies were normal and needle electromyography showed a myopathic pattern. MRI examination performed on three patients from successive generations showed involvement of proximal limb and paraspinal muscles. The clinical and pathological homogeneity in the present family, together with the lack of additional histological abnormalities after decades of disease progression in two affected individuals, supports this being a distinct myopathy with fibre type disproportion. Whether the disease in this family can be regarded as a form of the congenital myopathy known as CFTD or rather a unique condition sharing histological features with CFTD needs further investigation. This is, to our knowledge, the largest kindred with muscle fibre type disproportion reported to date. Our data confirm autosomal dominant inheritance, and this is the first MRI document of this disorder.
Collapse
Affiliation(s)
- M J Sobrido
- Department of Pathology and Neuropathology, Hospital do Meixoeiro, Vigo, Spain
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Rivas E, Teijeira S, dos Santos MR, Porrit I, Leturcq F, Fernandez JM, Navarro C. Beta-sarcoglycanopathy (LGMD 2E) in a Spanish family. Acta Myol 2004; 23:159-62. [PMID: 15938574] [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: 05/02/2023]
Abstract
Out of 10 autosomal recessive limb-girdle muscular dystrophies reported, 4 are caused by mutations in the genes encoding for sarcoglycans (alpha-, beta-, gamma- and delta-SG). Beta-sarcoglycanopathy (limb-girdle muscular dystrophy 2E) is a genetically heterogeneous disorder which usually presents a severe progressive clinical course. A complete immunohistochemical evaluation of the sarcoglycan complex should be carried out to direct the mutation analysis approach. The present report concerns a Spanish family with a genetically confirmed beta-sarcoglycanopathy. The patient, a 16-year-old female, offspring of a consanguineous marriage, developed a severe limb-girdle muscular dystrophy with a Duchenne-like phenotype. Muscle biopsy showed dystrophic changes and complete absence of the four sarcoglycans. Genetic analysis demonstrated homozygosis for the M100K missense mutation in exon 3, encoding for the proximal extracellular domain. The parents and one sister were found to be carriers. Missense mutations affecting this domain result in the instability of the entire sarcoglycan complex and lead to severe phenotypes as seen in non-sense mutations.
Collapse
Affiliation(s)
- E Rivas
- Pathology and Neuropathology Service, Meixoeiro Hospital, Vigo, Spain
| | | | | | | | | | | | | |
Collapse
|
40
|
Rivas E, Teijeira S, Tardio A, Fachal C, Quintáns B, Navarro C. [A brain tissue bank in a neuropathology laboratory. Basic methodology]. Neurologia 2003; 18:709-15. [PMID: 14648346] [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: 04/27/2023] Open
Abstract
The Meixoeiro Hospital Brain Bank (BB) was established at the end of 2002. A BB is a tissue collection and storage system, established under the best conditions to carry out prospective morphological, biochemical or molecular studies. The BB should ideally be supported by a donor program, although samples may also be obtained from autopsy material from patients with neurodegenerative diseases. Recruitment of control cases from brains without neurological diseases is basic. The main goal of a BB is to provide brain tissue for research. Each case requires accurate clinical data, a definite diagnosis and optimal conditions of tissue preservation. The use of protocols to standardize the handling and processing of tissues, data recruitment and neuropathological diagnosis is fundamental to assure the quality and homogeneity of samples. Close collaboration between neuropathologists, neurologists and other specialists is essential in all the process. Although important advances in the tissue banking field have been achieved, the number of donors in Spain still remains low. Stronger institutional support as well as public awareness through better diffusion of the information is necessary to increase the number of donors and improve BB development.
Collapse
Affiliation(s)
- E Rivas
- Servicio de Anatomía Patológica y Neuropatología Hospital do Meixoeiro Vigo, Pontevedra
| | | | | | | | | | | |
Collapse
|
41
|
|
42
|
Crespo del Hierro J, Gete García P, Coello Casariego G, Rivas E, Monge Jodrá R, Alvarez-Vicent JJ. [Extra-naso-pharyngeal angiofibroma: report of a new case and review of literature]. Acta Otorrinolaringol Esp 2002; 53:297-301. [PMID: 12185907 DOI: 10.1016/s0001-6519(02)78313-1] [Citation(s) in RCA: 5] [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: 11/16/2022]
Abstract
Juvenile nasopharyngeal angiofibromas are vascular neoplasms, which originate characteristically in the posterior lateral wall of the nasopharynx. Although angiofibromas extend beyond the nasopharynx commonly, sometimes they can have their origin outside nasopharynx. We present an unusual case of extranasopharyngeal angiofibroma. A high level of suspicion is essential for an adequate diagnosis and treatment of these neoplasms.
Collapse
Affiliation(s)
- J Crespo del Hierro
- Servicio de ORL, Hospital Universitario 12 de Octubre, Carretera de Andalucía, km. 5,4, Madrid
| | | | | | | | | | | |
Collapse
|
43
|
Abstract
Some genes produce noncoding transcripts that function directly as structural, regulatory, or even catalytic RNAs [1, 2]. Unlike protein-coding genes, which can be detected as open reading frames with distinctive statistical biases, noncoding RNA (ncRNA) gene sequences have no obvious inherent statistical biases [3]. Thus, genome sequence analyses reveal novel protein-coding genes, but any novel ncRNA genes remain invisible. Here, we describe a computational comparative genomic screen for ncRNA genes. The key idea is to distinguish conserved RNA secondary structures from a background of other conserved sequences using probabilistic models of expected mutational patterns in pairwise sequence alignments. We report the first whole-genome screen for ncRNA genes done with this method, in which we applied it to the "intergenic" spacers of Escherichia coli using comparative sequence data from four related bacteria. Starting from >23,000 conserved interspecies pairwise alignments, the screen predicted 275 candidate structural RNA loci. A sample of 49 candidate loci was assayed experimentally. At least 11 loci expressed small, apparently noncoding RNA transcripts of unknown function. Our computational approach may be used to discover structural ncRNA genes in any genome for which appropriate comparative genome sequence data are available.
Collapse
Affiliation(s)
- E Rivas
- Howard Hughes Medical Institute and Department of Genetics, Washington University School of Medicine, Saint Louis, MO 63110, USA
| | | | | | | |
Collapse
|
44
|
Abstract
In contrast to children, intussusception is an unusual cause of an abdominal emergency in adults. We report on a 65-year-old patient who complained of inconstant crampy abdominal pain for a period of over 6 months. He was admitted to our hospital because of acute intestinal obstruction. Sonography and computer tomography suggested an intussusception. At surgery the diagnosis of an ileo-ileal invagination was confirmed and resection of a segment of the ileum was performed. As shown by macroscopic findings intussusception had existed for several days. Histologically, the underlying disease causing the intussusception was a leiomyoma arising from the submucosa.
Collapse
Affiliation(s)
- S C Schmidt
- Klinik für Allgemein-, Viszeral- und Transplantationschirurgie, Charité Campus Virchow Klinikum, Humboldt-Universität zu Berlin
| | | | | |
Collapse
|
45
|
Gutiérrez G, Guiscafré H, Verver H, Valdés J, Rivas E, Loyo E, Clavery M. [Child health care program in Mexico. Evaluation of the quality of the integrated health care given in training centers]. GAC MED MEX 2001; 137:21-9. [PMID: 11244825] [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: 02/19/2023] Open
Abstract
OBJECTIVE To assess the quality of the integral care of children under five years old (AIMCA) at three first level care units, that without additional resources, were selected by the Child Health Care Program (PASN) to function as statewide training centers. MATERIAL AND METHODS Using matching list, structure, validated by a consensus of experts and a pilot test, six components of the AIMCA were assessed. The study included children under five years old outpatient clinic, during a period of a week: on the average 30 at each unit. RESULTS Although there were differences between each health unit, in a high number of cases, the score given to each component of the AIMCA was optimum or satisfactory. The most relevant deficiencies were those related to the mother's training. The assessment allowed for correcting deficiencies in the AIMCA and others related with the organization of Training Centers. CONCLUSIONS It is possible to have an AIMCA of good quality, at first level units without additional resources. We propose that the mother's training be given mainly by a nurse, especially in children with factors of poor prognosis. The methodology used can be employed to evaluate the AIMCA periodically at training centers.
Collapse
Affiliation(s)
- G Gutiérrez
- Grupo Interinstitucional de Investigación en Sistemas de Salud, Secretaría de Salud- Instituto Mexicano del Seguro Social, México, D.F
| | | | | | | | | | | | | |
Collapse
|
46
|
Fernández C, Nieto O, Rivas E, Montenegro G, Fontenla JA, Fernández-Mayoralas A. Synthesis and biological studies of glycosyl dopamine derivatives as potential antiparkinsonian agents. Carbohydr Res 2000; 327:353-65. [PMID: 10990020 DOI: 10.1016/s0008-6215(00)00073-2] [Citation(s) in RCA: 58] [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] [Indexed: 11/28/2022]
Abstract
A new approach to deliver dopamine into the central nervous system, based on the use of D-glucose as transportable agent, has been studied. Glycosyl dopamine derivatives bearing the sugar moiety linked to either the amino group or the catechol ring of dopamine through amide, ester or glycosidic bonds were synthesised as potential antiparkinsonian agents. Studies on the binding to dopamine D2 receptor, in vitro stability, and locomotive effect in mice of the synthetic glycoconjugates are reported.
Collapse
Affiliation(s)
- C Fernández
- Instituto de Química Orgánica General, CSIC, Madrid, Spain
| | | | | | | | | | | |
Collapse
|
47
|
Abstract
MOTIVATION Several results in the literature suggest that biologically interesting RNAs have secondary structures that are more stable than expected by chance. Based on these observations, we developed a scanning algorithm for detecting noncoding RNA genes in genome sequences, using a fully probabilistic version of the Zuker minimum-energy folding algorithm. RESULTS Preliminary results were encouraging, but certain anomalies led us to do a carefully controlled investigation of this class of methods. Ultimately, our results argue that for the probabilistic model there is indeed a statistical effect, but it comes mostly from local base-composition bias and not from RNA secondary structure. For the thermodynamic implementation (which evaluates statistical significance by doing Monte Carlo shuffling in fixed-length sequence windows, thus eliminating the base-composition effect) the signals for noncoding RNAs are still usually indistinguishable from noise, especially when certain statistical artifacts resulting from local base-composition inhomogeneity are taken into account. We conclude that although a distinct, stable secondary structure is undoubtedly important in most noncoding RNAs, the stability of most noncoding RNA secondary structures is not sufficiently different from the predicted stability of a random sequence to be useful as a general genefinding approach.
Collapse
Affiliation(s)
- E Rivas
- Department of Genetics, Washington University, St. Louis, MO 63110, USA
| | | |
Collapse
|
48
|
López CS, Heras H, Garda H, Ruzal S, Sánchez-Rivas C, Rivas E. Biochemical and biophysical studies of Bacillus subtilis envelopes under hyperosmotic stress. Int J Food Microbiol 2000; 55:137-42. [PMID: 10791732 DOI: 10.1016/s0168-1605(00)00171-9] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.2] [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: 11/26/2022]
Abstract
The behaviour and state of the envelopes from B. subtilis cultures grown in Luria Bertani (LB) medium with and without 1.5 M NaCl are compared. Under hypertonic conditions, the hydrophobicity of the cultures increases. The phospholipid and fatty acid (FA) compositions show important differences: a higher cardiolipin (CL) content [at the expense of phosphatidylglycerol (PG)], and a higher unsaturated and straight chain FA content. The fluidity of the membranes, determined with fluorescent probes, indicates an increase in viscosity of the cytoplasmic membrane. The consequences of these variations in membrane permeability and osmotolerance are discussed.
Collapse
Affiliation(s)
- C S López
- Instituto de Biología Celular, Facultad de Medicina, Buenos Aires, Argentina
| | | | | | | | | | | |
Collapse
|
49
|
Abstract
MOTIVATION In a previous paper, we presented a polynomial time dynamic programming algorithm for predicting optimal RNA secondary structure including pseudoknots. However, a formal grammatical representation for RNA secondary structure with pseudoknots was still lacking. RESULTS Here we show a one-to-one correspondence between that algorithm and a formal transformational grammar. This grammar class encompasses the context-free grammars and goes beyond to generate pseudoknotted structures. The pseudoknot grammar avoids the use of general context-sensitive rules by introducing a small number of auxiliary symbols used to reorder the strings generated by an otherwise context-free grammar. This formal representation of the residue correlations in RNA structure is important because it means we can build full probabilistic models of RNA secondary structure, including pseudoknots, and use them to optimally parse sequences in polynomial time.
Collapse
Affiliation(s)
- E Rivas
- Department of Genetics, Washington University, St. Louis, MO 63110, USA
| | | |
Collapse
|
50
|
Abstract
1. The effects of two new synthetic compounds showing in vitro catechol-O-methyl transferase (COMT) inhibitor properties were studied in vivo and compared with the effects of nitecapone and Ro-41-0960. 2. QO IA (3-(3-hydroxy-4-methoxy-5-nitrobenzylidene)-2,4-pentanedione), QO IIR ([2-(3,4-dihydroxy-2-nitrophenyl)vinyl]phenyl ketone), nitecapone and Ro-41-0960 (30 mg kg(-1), i.p.) were given to reserpinized rats 1 h before the administration of L-DOPA/carbidopa (LD/CD, 50:50 mg kg(-1), i.p.). Locomotor activity was assessed 1 h later. All the COMT inhibitors (COMTI), with the exception of QO IA, markedly potentiated LD/CD reversal of reserpine-induced akinesia. Similar results were obtained when the COMTI were coadministered with LD/CD. The effect of compound QO IIR was dose-dependent (7.5-30 mg kg(-1), i.p.). 3. The COMTI (30 mg kg(-1), i.p.) potentiated LD/CD reversal of both catalepsy and hypothermia of reserpinized mice. 4. QO IIR, nitecapone and Ro-41-0960 (30 mg kg(-1), i.p.) reduced striatal 3-methyl-DOPA (3-OMD) levels and increased dopamine (DA) and dihydroxyphenylacetic acid (DOPAC) levels. Compound QO IA was devoid of any effect on striatal amine levels. In contrast to the other inhibitors, Ro-41-0961 reduced HVA levels as well. The effect of QO IIR on striatal amine levels was dose-dependent (7.5-60 mg kg(-1), i.p.) 5. These results suggest that the new compound QO IIR is an effective peripherally acting COMT inhibitor in vivo.
Collapse
Affiliation(s)
- E Rivas
- Department of Pharmacology, Faculty of Pharmacy, University of Santiago de Compostela, Spain
| | | | | | | |
Collapse
|