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Vázquez R, Parras-Berrocal IM, Koseki S, Cabos W, Sein DV, Izquierdo A. Seasonality of coastal upwelling trends in the Mauritania-Senegalese region under RCP8.5 climate change scenario. Sci Total Environ 2023; 898:166391. [PMID: 37597551 DOI: 10.1016/j.scitotenv.2023.166391] [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: 04/27/2023] [Revised: 08/13/2023] [Accepted: 08/16/2023] [Indexed: 08/21/2023]
Abstract
The Mauritania-Senegalese upwelling region (MSUR), the southernmost region of the Canary current upwelling system, is well-known for its coastal productivity and the key role it plays in enriching the oligotrophic open ocean through the offshore transport of the upwelled coastal waters. The great ecological and socio-economic importance makes it necessary to evaluate the impact of climate change on this region. Hence, our main objective is to examine the climate change signal over the MSUR with a high resolution regional climate system model (RCSM) forced by the Earth system model MPI-ESM-LR under RCP8.5 scenario. This RCSM has a regional atmosphere model (REMO) coupled to a global ocean model (MPIOM) with high-resolution in the MSUR, which allows us to evaluate the wind pattern, the ocean stratification, as well as the upwelling source water depth, while maintaining an ocean global domain. Under RCP8.5 scenario, our results show that the upwelling favourable winds of the northern MSUR are year-round intensified, while the southern MSUR presents a strengthening in winter and a weakening in March-April. Along with changes in the wind pattern, we found increased ocean stratification in the spring months. In those months southern MSUR presents a shallowing of the upwelling source water depth associated to changes in both mechanisms. However, in winter the whole MSUR shows a deepening of the upwelling source water depth due to the intensification of the upwelling favourable winds, with the increased ocean stratification playing a secondary role. Our results demonstrate the need to evaluate the future evolution of coastal upwelling systems taking into account their latitudinal and seasonal variability and the joint contribution of both mechanisms.
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Affiliation(s)
- R Vázquez
- Instituto Universitario de Investigación Marina (INMAR), Universidad de Cádiz, Spain; Departamento de Física y Matemáticas, Universidad de Alcalá, Spain.
| | - I M Parras-Berrocal
- Instituto Universitario de Investigación Marina (INMAR), Universidad de Cádiz, Spain
| | - S Koseki
- Geophysical Institute, University of Bergen, Bjerknes Centre for Climate Research, Norway
| | - W Cabos
- Departamento de Física y Matemáticas, Universidad de Alcalá, Spain
| | - D V Sein
- Alfred Wegener Institute for Polar and Marine Research, Germany; Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia
| | - A Izquierdo
- Instituto Universitario de Investigación Marina (INMAR), Universidad de Cádiz, Spain
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Puche JE, Iturregui-Guevara M, Vázquez R. [Prognostic impact of cardiovascular risk factors in patients admitted for acute coronary syndrome]. Hipertens Riesgo Vasc 2023; 40:110-118. [PMID: 36273980 DOI: 10.1016/j.hipert.2022.09.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 07/27/2022] [Accepted: 09/12/2022] [Indexed: 06/16/2023]
Abstract
INTRODUCTION AND OBJECTIVES Cardiovascular prevention measures place the emphasis on controlling cardiovascular risk factors (CVRF). However, the most recent studies provide disappointing data, the impact of which remains to be determined. The objective of this study was to analyse the impact that the different CVRFs, and their degree of control, have on the prognosis of patients after acute coronary syndrome. PATIENTS AND METHODS Epidemiological, pharmacological, and CVRF control data were collected from 1,689 consecutive patients admitted from 2018 to 2020 for acute coronary syndrome to a tertiary hospital. Finally, the rate of major adverse cardiovascular events was calculated. RESULTS The patients admitted for acute coronary syndrome were predominantly men, with body mass index>25Kg/m2, smokers (or former smokers) and with poor CVRF control (50% for hypertension and diabetes and 35% for dyslipidaemia), especially those patients with a personal history of ischaemic heart disease. An underutilisation of useful drugs for CVRF control was found. A directly proportional relationship was observed between the number of CVRFs (or their poor control) and the incidence of major adverse cardiovascular events at 2 years, hypertension being the factor with the greatest cardiovascular impact. The SARS-CoV-2 lockdown worsened the degree of CVRF control and cardiovascular prognosis. CONCLUSION There is still room for improvement in the control of CVRF, which would translate into a prognostic benefit for patients with ischaemic heart disease. The implementation of cardiovascular prevention campaigns seems essential.
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Affiliation(s)
- J E Puche
- Servicio de Cardiología, Hospital Universitario Puerta del Mar, Cádiz, España; Servicio de Cardiología, Hospital Costa del Sol, Marbella, España.
| | - M Iturregui-Guevara
- Servicio de Endocrinología, Hospital Universitario de Jerez de la Frontera, Jerez de la Frontera, España
| | - R Vázquez
- Servicio de Cardiología, Hospital Universitario Puerta del Mar, Cádiz, España
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Vázquez R, Rivero-Buceta V, del Campo R, Poblete-Castro I, Herencias C. Editorial: Advanced technologies in bioengineering to fight antimicrobial resistance. Front Bioeng Biotechnol 2023; 11:1182463. [PMID: 37051273 PMCID: PMC10083505 DOI: 10.3389/fbioe.2023.1182463] [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] [Received: 03/08/2023] [Accepted: 03/22/2023] [Indexed: 03/29/2023] Open
Affiliation(s)
- R. Vázquez
- Department of Biotechnology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
- *Correspondence: R. Vázquez, ; C. Herencias,
| | - V. Rivero-Buceta
- Centro de Investigaciones Biológicas Margarita Salas, Madrid, Spain
| | - R. del Campo
- Servicio de Microbiología, Hospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Infecciosas-CIBERINFEC, Instituto de Salud Carlos III, Madrid, Spain
| | - I. Poblete-Castro
- Biosystems Engineering Laboratory, Department of Chemical and Bioprocess Engineering, Universidad de Santiago de Chile (USACH), Santiago, Chile
| | - C. Herencias
- Servicio de Microbiología, Hospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Infecciosas-CIBERINFEC, Instituto de Salud Carlos III, Madrid, Spain
- *Correspondence: R. Vázquez, ; C. Herencias,
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Doñate-Martínez A, Pisano-González M, Boone AL, Vázquez R, Peñacoba D, Valsecchi V, Zora S, Tan SS, Baker G, Garcés J. Implementation of a self-management programme: recruitment strategies in five European countries. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa165.1048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
The Chronic Disease Self-Management Programme (CDSMP) has been successfully implemented in over 30 countries worldwide, demonstrating its effectiveness and cost savings to healthcare systems. The CDSMP aims at people with any chronic condition and caregivers, but it has not targeted specific vulnerable populations at different sites simultaneously. In this sense, this study presents the recruitment strategies to involve vulnerable populations in the CDSMP framed under the EU-funded project EFFICHRONIC (ref.: 738127).
Methods
The CDSMP was implemented in five countries (Spain, Italy, France, the Netherlands and the United Kinkdom) approaching several vulnerable target groups. The programme consists of strictly scripted group sessions during 6 weeks imparted by previously trained monitors. EFFICHRONIC recruitment was performed in 3 consecutive steps combining population-based and individual strategies: i) development of vulnerable maps to detect areas with higher vulnerability; ii) creation of alliances with different actors; and iii) identification of end-users.
Results
Over 234 leaders were trained distributed over the five sites and 237 workshops with end-users were organized following the recruitment strategies. The average number of engaged participants per workshop was 13. In total, 2,962 vulnerable persons were engaged and 2,177 finalized the programme, meaning a drop-out rate of 25%. The sample was composed of ethnic minorities, immigrants, refugees, older people living alone or in institutions, people with few economic resources or living in therapeutic communities, inmates and members of different kinds of associations.
Discussion
The strategic coordination at loco-regional level between multidisciplinary stakeholders has been a key success factor to obtain maximum recruitment. The activation of different strategies simultaneously optimized the project results approaching a wide variety of end-users and communities.
Key messages
Stakeholder engagement is crucial to identify and recruit vulnerable individuals in need of support for the management of their chronic conditions. Recruitment strategies must be adapted to each specific context and culture to achieve relevant adherence levels and benefits.
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Affiliation(s)
- A Doñate-Martínez
- Polibienestar Research Institute, University of Valencia, Polibienestar Research Institute, Valencia, Spain
| | - M Pisano-González
- Dirección General de Cuidados, Humanización y Atención Socio, Consejería de Salud, Asturias, Spain
| | - A L Boone
- Dirección General de Cuidados, Humanización y Atención Socio, Consejería de Salud, Asturias, Spain
| | - R Vázquez
- Dirección General de Cuidados, Humanización y Atención Socio, Consejería de Salud, Asturias, Spain
| | - D Peñacoba
- Dirección General de Cuidados, Humanización y Atención Socio, Consejería de Salud, Asturias, Spain
| | - V Valsecchi
- Unité d'Immunologie clinique et Thérapeutique ostéo-articula, Centre Hospitalier Universitaire de Montpellier, Montpellier, France
| | - S Zora
- Ente Ospedaliero Galliera, Galliera, Italy
| | - S S Tan
- Department of Public Health, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - G Baker
- Quality Institute for Self-management Education and Training, London, UK
| | - J Garcés
- Polibienestar Research Institute, University of Valencia, Polibienestar Research Institute, Valencia, Spain
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Pierre R, Vieira M, Vázquez R, Ninomiya I, Messere G, Daza W, Dadan S, Higuera M, Sifontes L, Harris P, Gana J, Rodríguez M, Vasquez M, González M, Rivera J, Gonzales J, Angulo D, Cetraro M, Del Compare M, López K, Navarro D, Calva R, Wagener M, Zablah R, Carias A, Calderón O, Vera-Chamorro J, Toca M, Dewaele M, Iglesias C, Delgado L, León K, Hassan I, Ussher F, Follett F, Bernedo V, Grinblat V, Agüero N, Oviedo C, García A, Salazar A, Coello P, Furnes R, Menchaca M, Fernández M, Khoury A, Rojo C, Fernández S, Morao C. Prevalence of eosinophilic esophagitis: A multicenter study on a pediatric population evaluated at thirty-six Latin American gastroenterology centers. Revista de Gastroenterología de México (English Edition) 2019. [DOI: 10.1016/j.rgmxen.2018.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Pierre R, Vieira M, Vázquez R, Ninomiya I, Messere G, Daza W, Dadan S, Higuera M, Sifontes L, Harris P, Gana JC, Rodríguez M, Vasquez M, González M, Rivera J, Gonzales J, Angulo D, Cetraro MD, Del Compare M, López K, Navarro D, Calva R, Wagener M, Zablah R, Carias A, Calderón O, Vera-Chamorro JF, Toca MC, Dewaele MR, Iglesias C, Delgado L, León K, Hassan I, Ussher F, Follett F, Bernedo V, Grinblat V, Agüero N, Oviedo C, García AG, Salazar A, Coello P, Furnes R, Menchaca M, Fernández M, Khoury A, Rojo C, Fernández S, Morao C. Prevalence of eosinophilic esophagitis: A multicenter study on a pediatric population evaluated at thirty-six Latin American gastroenterology centers. Rev Gastroenterol Mex (Engl Ed) 2019; 84:427-433. [PMID: 30292584 DOI: 10.1016/j.rgmx.2018.08.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 05/31/2018] [Revised: 07/02/2018] [Accepted: 08/10/2018] [Indexed: 06/08/2023]
Abstract
INTRODUCTION AND OBJECTIVE Eosinophilic esophagitis is a chronic, immune-mediated disease described in case series and publications worldwide. Over the past twenty years, the authors of different studies have attempted to evaluate its incidence and prevalence. The objetive of the present study was to estimate the prevalence of eosinophilic esophagitis in a group of children seen at 36 pediatric gastroenterology centers in ten Latin American countries. MATERIALS AND METHODS A multicenter, observational, and cross-sectional study was conducted that estimated the period prevalence of eosinophilic esophagitis in children seen at outpatient consultation and that underwent diagnostic upper gastrointestinal endoscopy for any indication at 36 centers in 10 Latin American countries, within a 3-month time frame. RESULTS Between April and June 2016, 108 cases of eosinophilic esophagitis were evaluated. Likewise, an average of 29,253 outpatient consultations and 4,152 diagnostic upper gastrointestinal endoscopies were carried out at the 36 participating centers. The period prevalence of eosinophilic esophagitis in the population studied (n=29,253) was 3.69 cases×1,000 (95% CI: 3.04 to 4.44), and among the children that underwent routine upper gastrointestinal endoscopy (n=4,152), it was 26x1,000 (95% CI: 22.6 to 29.4). CONCLUSIONS The general period prevalence of eosinophilic esophagitis in a group of children evaluated at 36 Latin American pediatric gastroenterology centers was 3.69×1,000, and in the children that underwent endoscopy, it was 26×1,000. There was important prevalence variability between the participating countries and centers. The present analysis is the first study conducted on the prevalence of pediatric eosinophilic esophagitis in Latin America.
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Affiliation(s)
- R Pierre
- Clínica Razetti, Barquisimeto, Venezuela.
| | - M Vieira
- Hospital Pequeño Príncipe, Curitiba, Brasil
| | - R Vázquez
- Hospital Infantil de México Federico Gómez, México DF, México
| | - I Ninomiya
- Hospital Italiano, Buenos Aires, Argentina
| | - G Messere
- Hospital Nacional Alejandro Posadas, Buenos Aires, Argentina
| | - W Daza
- Unidad de Gastroenterología Pediátrica y Nutrición, Gastronutriped, Bogotá, Colombia
| | - S Dadan
- Unidad de Gastroenterología Pediátrica y Nutrición, Gastronutriped, Bogotá, Colombia
| | - M Higuera
- Unidad de Gastroenterología Pediátrica y Nutrición, Gastronutriped, Bogotá, Colombia
| | - L Sifontes
- Centro Médico El Valle, Porlamar, Venezuela
| | - P Harris
- Pontificia Universidad Católica, Santiago, Chile
| | - J C Gana
- Pontificia Universidad Católica, Santiago, Chile
| | - M Rodríguez
- Hospital de Niños Dr. J.M. de Los Ríos, Caracas, Venezuela
| | - M Vasquez
- Hospital Universitario de Pediatría Dr. Agustín Zubillaga, Barquisimeto, Venezuela
| | - M González
- Hospital Dr. Roberto del Río, Santiago, Chile
| | - J Rivera
- Instituto Nacional de Salud del Niño, Lima, Perú; Clínica Ricardo Palma, Lima, Perú
| | - J Gonzales
- Instituto Nacional de Salud del Niño, Lima, Perú; Clínica Ricardo Palma, Lima, Perú
| | - D Angulo
- Hospital Nacional Docente Madre Niño San Bartolomé, Lima, Perú
| | - M D Cetraro
- Hospital Nacional Docente Madre Niño San Bartolomé, Lima, Perú
| | | | - K López
- Hospital Dr. Miguel Pérez Carreño, Caracas, Venezuela
| | - D Navarro
- Hospital Dr. Miguel Pérez Carreño, Caracas, Venezuela
| | - R Calva
- Facultad de Medicina BUAP, Puebla, México
| | - M Wagener
- Hospital de Niños Dr. O. Alassia, Santa Fe, Argentina
| | - R Zablah
- Clínica de Gastroenterología, Endoscopia y Nutrición Pediátrica Multipediátrica, San Salvador, El Salvador
| | - A Carias
- Fundación Santa Fe de Bogotá, Bogotá, Colombia
| | - O Calderón
- Clínica Farallones-Gastroped, Cali, Colombia
| | | | - M C Toca
- Hospital Nacional Alejandro Posadas, Buenos Aires, Argentina
| | - M R Dewaele
- Hospital Pereira Rossel, Montevideo, Uruguay
| | - C Iglesias
- Hospital Pereira Rossel, Montevideo, Uruguay
| | - L Delgado
- Hospital Pereira Rossel, Montevideo, Uruguay
| | - K León
- Policlínica Metropolitana, Caracas, Venezuela
| | - I Hassan
- Policlínica Metropolitana, Caracas, Venezuela
| | - F Ussher
- Hospital Universitario Austral, Buenos Aires, Argentina
| | - F Follett
- Hospital Universitario Austral, Buenos Aires, Argentina
| | - V Bernedo
- Hospital de Niños Sor María Ludovica, La Plata, Argentina
| | - V Grinblat
- Clínica Universitaria Reina Fabiola, Córdoba, Argentina
| | - N Agüero
- Clínica Universitaria Reina Fabiola, Córdoba, Argentina
| | - C Oviedo
- Hospital Vozandes, Quito, Ecuador
| | - A G García
- Gastroclínica, San Salvador, El Salvador
| | - A Salazar
- Hospital Central Ignacio Morones Prieto, San Luis Potosí, México
| | - P Coello
- Hospital Civil Juan I. Menchaca, Guadalajara, México
| | - R Furnes
- Hospital Privado Universitario de Córdoba, Córdoba, Argentina
| | - M Menchaca
- Hospital Universitario UANL, Monterrey, México
| | - M Fernández
- Hospital Dr. Manuel Antonio Narváez, Porlamar, Venezuela
| | - A Khoury
- Centro Policlínico Valencia, Valencia, Venezuela
| | - C Rojo
- Hospital Regional Leonardo Guzmán, Antofagasta, Chile
| | | | - C Morao
- Hospital de Niños Dr. J.M. de Los Ríos, Caracas, Venezuela
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García J, Méndez D, Álvarez M, Sanmartin B, Vázquez R, Regueiro L, Atanassova M. Design of novel functional food products enriched with bioactive extracts from holothurians for meeting the nutritional needs of the elderly. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2019.03.097] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Carrillo J, Ramirez-Ortega M, Gomez-Argumosa E, Oñate-Ocaña L, Luna K, Vázquez R. Prognostic impact of radioactive iodine diagnostic scan after detection of biochemical recurrence in intermediate and high risk differentiated thyroid cancer. Eur J Surg Oncol 2019. [DOI: 10.1016/j.ejso.2018.10.106] [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: 11/30/2022] Open
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Salas-Romero J, Gómez-Cabrera KA, Salas JE, Vázquez R, Arenal A, Nielsen MK. First report of anthelmintic resistance of equine cyathostomins in Cuba. Vet Parasitol Reg Stud Reports 2018; 13:220-223. [PMID: 31014878 DOI: 10.1016/j.vprsr.2018.07.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 05/22/2018] [Accepted: 07/11/2018] [Indexed: 11/26/2022]
Abstract
Anthelmintic resistance in equine cyathostomins has been described worldwide, with resistance to the benzimidazole class being particularly widespread. The status of anthelmintic efficacy in Cuba has been virtually unknown due to the lack of equine labelled products. One recent report documented suboptimal efficacy levels of extra-label albendazole products against cyathostomins, but it remains unknown to which extent benzimidazole resistance exists in the population. The aim of the present study was to evaluate the anthelmintic efficacy of two benzimidazole products labelled for equines, fenbendazole and oxibendazole. A fecal egg count reduction test (FECRT) was carried out on 132 horses aged 4 months to 18 years in 14 herds, belonging to six provinces. Ten herds exhibited signs of resistance to at least one of the benzimidazoles (mean FECRT<90%). Overall, oxibendazole exhibited higher efficacy than fenbendazole (p = 0.0062), and higher efficacy levels were found in horses never dewormed before compared to those treated within 3-12 months prior to the study (p = 0.0015). Pre-treatment larval cultures revealed the presence of large strongyles and cyathostomin larvae in all herds, while only cyathostomin larvae were detected post treatment. The present work is the first report of anthelmintic resistance in equine cyathostomins in Cuba, and suggests pre-selection for resistant strains by extra-label use of albendazole on the studied farms.
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Affiliation(s)
- J Salas-Romero
- Facultad de Ciencias Agropecuarias, Universidad de Camagüey Ignacio Agramonte Loynáz, Cuba.
| | - K A Gómez-Cabrera
- Facultad de Ciencias Agropecuarias, Universidad de Camagüey Ignacio Agramonte Loynáz, Cuba
| | - J E Salas
- Escuela Fiscal Unidad Educativa Nacional Napo, Sucumbios, Ecuador
| | - R Vázquez
- Facultad de Ciencias Agropecuarias, Universidad de Camagüey Ignacio Agramonte Loynáz, Cuba
| | - A Arenal
- Facultad de Ciencias Agropecuarias, Universidad de Camagüey Ignacio Agramonte Loynáz, Cuba
| | - M K Nielsen
- M.H. Gluck Equine Research Center, Department of Veterinary Science, University of Kentucky, Lexington, KY, USA
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Vázquez R, Poletto DJ, Moreno MT, Climent A, Toscano E. Ileoileal and ileocecal intussusception due to ileal lipoma: A rare cause of bowel obstruction in the adult. Rev Gastroenterol Mex (Engl Ed) 2017; 83:457-459. [PMID: 28684032 DOI: 10.1016/j.rgmx.2017.03.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 02/26/2017] [Accepted: 03/14/2017] [Indexed: 10/19/2022]
Affiliation(s)
- R Vázquez
- Servicio de Cirugía General y del Aparato Digestivo, Hospital Povisa, Vigo, Pontevedra, España.
| | - D J Poletto
- Servicio de Cirugía General y del Aparato Digestivo, Hospital Povisa, Vigo, Pontevedra, España
| | - M T Moreno
- Servicio de Cirugía General y del Aparato Digestivo, Hospital Povisa, Vigo, Pontevedra, España
| | - A Climent
- Servicio de Cirugía General y del Aparato Digestivo, Hospital Povisa, Vigo, Pontevedra, España
| | - E Toscano
- Servicio de Cirugía General y del Aparato Digestivo, Hospital Povisa, Vigo, Pontevedra, España
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Valdovinos M, Montijo E, Abreu A, Heller S, González-Garay A, Bacarreza D, Bielsa-Fernández M, Bojórquez-Ramos M, Bosques-Padilla F, Burguete-García A, Carmona-Sánchez R, Consuelo-Sánchez A, Coss-Adame E, Chávez-Barrera J, de Ariño M, Flores-Calderón J, Gómez-Escudero O, González-Huezo M, Icaza-Chávez M, Larrosa-Haro A, Morales-Arámbula M, Murata C, Ramírez-Mayans J, Remes-Troche J, Rizo-Robles T, Peláez-Luna M, Toro-Monjaraz E, Torre A, Urquidi-Rivera M, Vázquez R, Yamamoto-Furusho J, Guarner F. The Mexican consensus on probiotics in gastroenterology. Revista de Gastroenterología de México (English Edition) 2017. [DOI: 10.1016/j.rgmxen.2017.03.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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Valdovinos MA, Montijo E, Abreu AT, Heller S, González-Garay A, Bacarreza D, Bielsa-Fernández M, Bojórquez-Ramos MC, Bosques-Padilla F, Burguete-García AI, Carmona-Sánchez R, Consuelo-Sánchez A, Coss-Adame E, Chávez-Barrera JA, de Ariño M, Flores-Calderón J, Gómez-Escudero O, González-Huezo MS, Icaza-Chávez ME, Larrosa-Haro A, Morales-Arámbula M, Murata C, Ramírez-Mayans JA, Remes-Troche JM, Rizo-Robles T, Peláez-Luna M, Toro-Monjaraz EM, Torre A, Urquidi-Rivera ME, Vázquez R, Yamamoto-Furusho JK, Guarner F. The Mexican consensus on probiotics in gastroenterology. Rev Gastroenterol Mex 2017; 82:156-178. [PMID: 28104319 DOI: 10.1016/j.rgmx.2016.08.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 08/17/2016] [Accepted: 08/26/2016] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Probiotics are frequently prescribed in clinical practice. Their efficacy in treating gastrointestinal disorders is supported by a significant number of clinical trials. However, the correct prescription of these agents is hampered due to a lack of knowledge of the scientific evidence and to the different presentations and microbial compositions of the probiotics that are currently available. AIM To provide the clinician with a consensus review of probiotics and recommendations for their use in gastroenterology. MATERIALS AND METHODS Controlled clinical trials, meta-analyses, and systematic reviews published up to 2015 were selected, using the MESH terms: probiotics, gastrointestinal diseases, humans, adults, AND children. The Delphi method was employed. Eighteen gastroenterologists treating adult patients and 14 pediatric gastroenterologists formulated statements that were voted on until agreement>70% was reached. The level of evidence based on the GRADE system was evaluated for each statement. RESULTS AND CONCLUSIONS Eleven statements on the general concepts of probiotics and 27 statements on the use of probiotics in gastrointestinal diseases in both adults and children were formulated. The consensus group recommends the use of probiotics under the following clinical conditions: the prevention of diarrhea associated with antibiotics, the treatment of acute infectious diarrhea, the prevention of Clostridium difficile infection and necrotizing enterocolitis, the reduction of adverse events from Helicobacter pylori eradication therapy, relief from irritable bowel syndrome symptoms, the treatment of functional constipation in the adult, and the induction and maintenance of remission in patients with ulcerative colitis and pouchitis, and the treatment of covert and overt hepatic encephalopathy.
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Affiliation(s)
- M A Valdovinos
- Departamento de Gastroenterología, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, México.
| | - E Montijo
- Departamento de Gastroenterología y Nutrición, Instituto Nacional de Pediatría, Ciudad de México, México
| | - A T Abreu
- Servicio de Gastroendoscopia, Hospital Regional n.(o) 2 con Unidad de Medicina de Atención Ambulatoria, IMSS, Ciudad de México, México
| | - S Heller
- Instituto Nacional de Perinatología Isidro Espinosa de los Reyes, Ciudad de México, México
| | - A González-Garay
- Metodología de la Investigación, Instituto Nacional de Pediatría, Ciudad de México, México
| | - D Bacarreza
- Hospital Infantil de las Californias, Tijuana, BC, México
| | - M Bielsa-Fernández
- Unidad de Pacientes en Estudio, Universidad Autónoma de Guadalajara, Zapopan, Jalisco, México
| | - M C Bojórquez-Ramos
- UMAE Hospital de Pediatría, Centro Médico Nacional de Occidente, IMSS, , Guadalajara, Jalisco, México
| | - F Bosques-Padilla
- Departamento de Medicina Interna, División de Gastroenterología, Hospital Universitario Dr. José Eleuterio González, Universidad Autónoma de Nuevo León, Monterrey, N.L., México
| | - A I Burguete-García
- Departamento de Epidemiología Genética e Infecciones, CISEI, INSP, Cuernavaca, Mor., México
| | | | - A Consuelo-Sánchez
- Departamento de Gastroenterología y Nutrición, Hospital Infantil de México Federico Gómez, Ciudad de México, México
| | - E Coss-Adame
- Departamento de Gastroenterología, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, México
| | - J A Chávez-Barrera
- Departamento de Gastroenterología Pediátrica, UMAE Hospital General Dr. Gaudencio González Garza, Centro Médico Nacional La Raza, IMSS, Ciudad de México, México
| | - M de Ariño
- Servicio de Gastroenterología, Hospital Español, Ciudad de México, México
| | - J Flores-Calderón
- Departamento de Gastroenterología y Endoscopia, UMAE Hospital de Pediatría Dr. Silvestre Frenk Freund, Centro Médico Nacional Siglo XXI, Ciudad de México, México
| | - O Gómez-Escudero
- Clínica de Gastroenterología, Endoscopia Digestiva y Motilidad Gastrointestinal, Hospital Ángeles Puebla, Puebla, México
| | - M S González-Huezo
- Departamento de Gastroenterología, Centro Médico Issemym, Metepec, Estado de México, México
| | | | - A Larrosa-Haro
- Instituto de Nutrición Humana, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | | | - C Murata
- Metodología de la Investigación, Instituto Nacional de Pediatría, Ciudad de México, México
| | - J A Ramírez-Mayans
- Departamento de Gastroenterología y Nutrición, Instituto Nacional de Pediatría, Ciudad de México, México
| | - J M Remes-Troche
- Laboratorio de Motilidad y Fisiología Digestiva, Instituto de Investigaciones Médico Biológicas, Universidad Veracruzana (UV), Veracruz, México
| | - T Rizo-Robles
- Servicio de Gastroenterología, Hospital de Especialidades Dr. Antonio Fraga Mouret, Centro Médico Nacional La Raza, IMSS, Ciudad de México, México
| | - M Peláez-Luna
- Departamento de Gastroenterología, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, México
| | - E M Toro-Monjaraz
- Departamento de Gastroenterología y Nutrición, Instituto Nacional de Pediatría, Ciudad de México, México
| | - A Torre
- Departamento de Gastroenterología, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, México
| | - M E Urquidi-Rivera
- Servicio de Gastroenterología Pediátrica y Endoscopia, Hospital Regional ISSSTE, Monterrey, N.L., México
| | - R Vázquez
- Departamento de Gastroenterología y Nutrición, Hospital Infantil de México Federico Gómez, Ciudad de México, México
| | - J K Yamamoto-Furusho
- Departamento de Gastroenterología, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, México
| | - F Guarner
- Servicio de Aparato Digestivo, Hospital Vall d'Hebrón, Barcelona, España
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García J, Orihuela A, Solano J, Flores-Pérez FI, Aguirre V, Vázquez R, Pablos JL. Short-term under-nutrition affects feeding and sexual behaviour in oestrous-synchronized Saint Croix ewes (Ovis aries). Journal of Applied Animal Research 2015. [DOI: 10.1080/09712119.2015.1091349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Moreno M, Casado C, Rodriguez P, Vázquez R, Molina T. PHC-003 Assessment of the Impact of Pharmacokinetics Monitoring Recommendations: Abstract PHC-003 Table 1. Eur J Hosp Pharm 2013. [DOI: 10.1136/ejhpharm-2013-000276.348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Rodríguez A, Gómez-Ambrosi J, Catalán V, Rotellar F, Valentí V, Silva C, Mugueta C, Pulido MR, Vázquez R, Salvador J, Malagón MM, Colina I, Frühbeck G. The ghrelin O-acyltransferase-ghrelin system reduces TNF-α-induced apoptosis and autophagy in human visceral adipocytes. Diabetologia 2012; 55:3038-50. [PMID: 22869322 DOI: 10.1007/s00125-012-2671-5] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Accepted: 06/25/2012] [Indexed: 12/19/2022]
Abstract
AIMS/HYPOTHESIS Proinflammatory and proapoptotic cytokines such as TNF-α are upregulated in human obesity. We evaluated the association between ghrelin isoforms (acylated and desacyl ghrelin) and TNF-α in obesity and obesity-associated type 2 diabetes, as well as the potential role of ghrelin in the control of apoptosis and autophagy in human adipocytes. METHODS Plasma concentrations of the ghrelin isoforms and TNF-α were measured in 194 participants. Ghrelin and ghrelin O-acyltransferase (GOAT) levels were analysed by western-blot, immunohistochemistry and real-time PCR in 53 biopsies of human omental adipose tissue. We also determined the effect of acylated and desacyl ghrelin (10 to 1,000 pmol/l) on TNF-α-induced apoptosis and autophagy-related molecules in omental adipocytes. RESULTS Circulating concentrations of acylated ghrelin and TNF-α were increased, whereas desacyl ghrelin levels were decreased in obesity-associated type 2 diabetes. Ghrelin and GOAT were produced in omental and subcutaneous adipose tissue. Visceral adipose tissue from obese patients with type 2 diabetes showed higher levels of GOAT, increased adipocyte apoptosis and increased expression of the autophagy-related genes ATG5, BECN1 and ATG7. In differentiating human omental adipocytes, incubation with acylated and desacyl ghrelin reduced TNF-α-induced activation of caspase-8 and caspase-3, and cell death. In addition, acylated ghrelin reduced the basal expression of the autophagy-related genes ATG5 and ATG7, while desacyl ghrelin inhibited the TNF-α-induced increase of ATG5, BECN1 and ATG7 expression. CONCLUSIONS/INTERPRETATION Apoptosis and autophagy are upregulated in human visceral adipose tissue of patients with type 2 diabetes. Acylated and desacyl ghrelin reduce TNF-α-induced apoptosis and autophagy in human visceral adipocytes.
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Affiliation(s)
- A Rodríguez
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Pamplona, Spain
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Ruiz M, Vázquez R, Porcacchia P, Muñoz C. P3.11 Refractory convulsive status epilepticus in children. Clin Neurophysiol 2011. [DOI: 10.1016/s1388-2457(11)60230-7] [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]
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Riveiro ME, De Kimpe N, Moglioni A, Vázquez R, Monczor F, Shayo C, Davio C. Coumarins: old compounds with novel promising therapeutic perspectives. Curr Med Chem 2010; 17:1325-38. [PMID: 20166938 DOI: 10.2174/092986710790936284] [Citation(s) in RCA: 325] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2009] [Accepted: 02/12/2010] [Indexed: 11/22/2022]
Abstract
Natural as well as synthetic coumarins have recently drawn much attention due to its broad pharmacological activities. Many coumarins and their derivatives exert anti-coagulant, anti-tumor, anti-viral, anti-inflammatory and anti-oxidant effects, as well as anti-microbial and enzyme inhibition properties. The recognition of key structural features within coumarin family is crucial for the design and development of new analogues with improved activity and for the characterization of their mechanism of action and potential side effects. The different substituents in the coumarin nucleus strongly influence the biological activity of the resulting derivatives. Although some coumarins have been already characterized to evoke a particular biological activity, the challenge would be the design and synthesis of new derivatives with high specific activity for other pharmacological targets and define their mechanism of action to achieve new therapeutic drugs. The present review highlights the current progress in the development of coumarin scaffolds for drug discovery as novel anti-cancer agents. The major challenges about coumarins include the translation of current knowledge into new potential lead compounds and the repositioning of known compounds for the treatment of cancer.
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Affiliation(s)
- M E Riveiro
- Laboratorio de Patología y Farmacología Molecular, Instituto de Biología y Medicina Experimental, Vuelta de Obligado 2490. C1428DN, Buenos Aires, Argentina.
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Andrade O, Vázquez R, Orihuela A. Sexual Behaviour of Hair Rams ( Ovis aries) Subjected to Frequent Collection and Free from Habituation to the Female. Journal of Applied Animal Research 2010. [DOI: 10.1080/09712119.2010.9707108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Orihuela A, Vázquez R. Mating preferences of Saint Croix rams to related or unrelated ewes. Small Rumin Res 2009. [DOI: 10.1016/j.smallrumres.2009.03.005] [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]
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Gutiérrez E, Churruca I, Zárate J, Carrera O, Portillo MP, Cerrato M, Vázquez R, Echevarría E. High ambient temperature reverses hypothalamic MC4 receptor overexpression in an animal model of anorexia nervosa. Psychoneuroendocrinology 2009; 34:420-9. [PMID: 19022583 DOI: 10.1016/j.psyneuen.2008.10.003] [Citation(s) in RCA: 24] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2008] [Revised: 09/29/2008] [Accepted: 10/08/2008] [Indexed: 02/07/2023]
Abstract
The potential involvement of the melanocortin system in the beneficial effects of heat application in rats submitted to activity-based anorexia (ABA), an analogous model of anorexia nervosa (AN), was studied. Once ABA rats had lost 20% of body weight, half of the animals were exposed to a high ambient temperature (HAT) of 32 degrees C, whereas the rest were maintained at 21 degrees C. Control sedentary rats yoked to ABA animals received the same treatment. ABA rats (21 degrees C) showed increased Melanocortin 4 (MC4) receptor and Agouti gene Related Peptide (AgRP) expression, and decreased pro-opiomelanocortin (POMC) mRNA levels (Real Time PCR), with respect to controls. Heat application increased weight gain and food intake, and reduced running rate in ABA rats, when compared with ABA rats at 21 degrees C. However, no changes in body weight and food intake were observed in sedentary rats exposed to heat. Moreover, heat application reduced MC4 receptor, AgRP and POMC expression in ABA rats, but no changes were observed in control rats. These results indicate that hypothalamic MC4 receptor overexpression could occur on the basis of the characteristic hyperactivity, weight loss, and self-starvation of ABA rats, and suggest the involvement of hypothalamic melanocortin neural circuits in behavioural changes shown by AN patients. Changes in AgRP and POMC expression could represent an adaptative response to equilibrate energy balance. Moreover, the fact that HAT reversed hypothalamic MC4 receptor overexpression in ABA rats indicates the involvement of brain melanocortin system in the reported beneficial effects of heat application in AN. A combination of MC4 receptor antagonists and heat application could improve the clinical management of AN.
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Affiliation(s)
- E Gutiérrez
- Departments of Clinical Psychology and Psychobiology, University of Santiago de Compostela, Spain
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Aguirre V, Orihuela A, Vázquez R. Effect of semen collection frequency on seasonal variation in sexual behaviour, testosterone, testicular size and semen characteristics of tropical hair rams (Ovis aries). Trop Anim Health Prod 2007; 39:271-7. [PMID: 17847822 DOI: 10.1007/s11250-007-9010-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The purpose of this study was to examine the effect of day length on seminal characteristics, testicular size, sexual behaviour and testosterone (T4) concentration in pelibuey rams subjected to different semen collection frequencies. eighteen intact males were assigned randomly to one of two semen collection frequencies: in the high rate (HR) treatment, two ejaculations per week were obtained from each ram; one ejaculation every two weeks was collected under the low rate (LR) treatment. All animals were housed individually in contiguous 5 m x 5 m wire mesh pens and evaluated over a 12-month period. At the beginning of the experiment rams were 20 months old and 40-50 kg in weight. All rams ejaculated and produced semen throughout the year. Semen volume, sperm per ejaculation, testicular circumference and testicular volume were significantly (p < 0.05) greater during short days in all rams, regardless of the semen collection frequency, with the exception of sperm concentration, for which no variation was found in hr individuals, and reaction time and T4 levels, for which no variation was found in IR males. Rams subjected to HR collection were more affected by the short-day photoperiod than rams collected twice per week, exhibiting greater reduction (p < 0.05) in time to achieve their first ejaculation and in sperm per ejaculation, as well as greater increases (p < 0.05) in T4 concentration than IR rams (14.65 +/- 1.22 vs 23.53 +/- 5.34 s, (3.37 +/- 0.17) x 10(9) vs (3.52 +/- 0.20) x10(9) sperm and 8.68 +/- 0.44 vs 6.85 +/- 0.74 ng/ml, respectively). It was concluded that: (a) the magnitude of the seasonal effects was not sufficient to prevent the rams being used for breeding throughout the year, and (b) seasonal variation within variables was affected differently between semen collection frequencies.
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Affiliation(s)
- V Aguirre
- Facultad de Ciencias Agropecuarias de la Universidad Autónoma del Estado de Morelos, Av. Universidad 1001 Col. Chamilpa, Cuernavaca, Morelos 62210, Mexico
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Valenzuela LF, Vázquez R, Fournier JA, Cubero J, Maraví J, Cruz-Fernández JM, Kaski JC. Prediction of infarction-related artery occlusion and multivessel disease in postinfarction angina. Int J Cardiol 2007; 115:381-5. [PMID: 16814417 DOI: 10.1016/j.ijcard.2006.04.036] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2005] [Revised: 03/31/2006] [Accepted: 04/01/2006] [Indexed: 11/19/2022]
Abstract
CONDENSED ABSTRACT To investigate the predictive value of clinical data for infarction-related artery (IRA) occlusion and multivessel coronary disease in postinfarction angina (PIA), we studied 181 consecutive patients presenting PIA following a first uncomplicated ST elevation AMI. Multivariate analysis showed ECG changes during PIA and the absence of thrombolytic therapy as independent predictors of IRA occlusion. Independent clinical predictors of multivessel coronary disease were age, previous history of angina and the number of cardiovascular risk factors. We conclude that reversible ECG changes during PIA correlated to IRA occlusion but failed to predict a multivessel coronary disease. AIM To identify clinical variables predictive of infarction-related artery (IRA) occlusion and multivessel coronary disease in patients with postinfarction angina pectoris (PIA) after a first uncomplicated acute myocardial infarction (AMI). METHODS We studied 181 consecutive patients with PIA following a first uncomplicated AMI. Clinical variables included cardiovascular risk factors, clinical history of angina before the event of inclusion, use of thrombolytic therapy in the previous AMI, ST-T changes during PIA, time to onset, number of episodes and delay to angiography after PIA. Angiographic variables were IRA TIMI flow, number of diseased vessels and ventricular function. RESULTS The IRA was occluded in 67 patients with PIA (37.0%). Reversible ECG changes during PIA were detected in 121 patients (67.0%): 79 cases (43.6%) with ST/T elevation and 42 cases (23.2%) with ST/T depression. Multivariate logistic regression analysis showed ECG changes during PIA (OR 3.12 CI 95% 1.48-6.54, p<0.01) and the absence of thrombolytic therapy (OR 2.21 95% CI 1.11-4.43, p<0.05) as independent predictors of IRA occlusion. We found multivessel coronary disease in 89 patients (49.2%) without any correlation to ECG changes during PIA. Independent clinical predictors of multivessel coronary disease were age (OR 1.03 95% CI 1.01-1.06, p<0.05), previous history of angina (OR 2.37 95% CI 1.06-5.28, p<0.05) and the number of cardiovascular risk factors (OR 1.37 95% CI 0.97-1.92, p=0.07). CONCLUSIONS ECG changes during PIA was correlated to IRA occlusion in spite of previous thrombolytic therapy but failed to predict a multivessel coronary disease in our patients.
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Giraldo G, Vázquez R, Martín-Esparza M, Chiralt A. Rehydration kinetics and soluble solids lixiviation of candied mango fruit as affected by sucrose concentration. J FOOD ENG 2006. [DOI: 10.1016/j.jfoodeng.2005.08.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Santaella Y, Borrego I, López J, Ortiz MJ, Vázquez R. Diagnóstico de recurrencia mediante FDG-PET en un caso clínico de schwannoma maligno. ACTA ACUST UNITED AC 2005; 24:127-30. [PMID: 15745683 DOI: 10.1157/13071688] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The peripheral nerve sarcoma, also called malignant schwannoma, is originally a soft tissue sarcoma. It is mainly located in the peripheral sheath nerve of the limbs and usually infiltrates the nerve fibres. We present the case of a thirty year old woman with a malignant schwannoma in her left leg sciatic nerve who had been treated on several occasions. An 18-FDG positron emission tomography was performed to evaluate the management of the patient. It showed regional recurrence, which required leg amputation. The pathological result has confirmed the PET diagnosis. PET can be a useful technique to detect recurrence for this kind of tumor, mainly in patients who have been previously radiated when the MRI is insufficient to perform a differential diagnosis between postirradiation fibrosis and tumoral recurrence, allowing for suitable therapeutic management of the patient.
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Affiliation(s)
- Y Santaella
- Unidad de Medicina Nuclear, Hospital Universitario Virgen del Rocío, Sevilla.
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Abstract
OBJECTIVE Recommendations that purified protein derivative (PPD) RT-23 tuberculin should not be kept and used more than 24 to 48 hours after opening are rarely complied with. The aim of this study was to determine whether using PPD RT-23 tuberculin from vials that had been open for a longer time could affect results of tuberculin tests and whether the solution could become contaminated. METHODS A prospective cross-sectional study was carried out. Two tuberculin tests were simultaneously administered, one in each forearm, to adult contacts of patients with active tuberculosis, one test using a recently opened vial of tuberculin (control) and the other using tuberculin that had been opened a week before (first phase) or a month before (second phase) (study tuberculin). Leftover tuberculin from several of the vials was cultured. RESULTS For the 127 patients in the first group (tuberculin opened 1 week), the mean (SD) diameter of the induration was 6.2 (6.9) mm for the study tuberculin and 6.3 (6.9) mm for the control (P=.3). For the 83 patients in the second group (tuberculin opened 1 month), the mean diameter of the induration was 5.5 (7.3) mm for the study tuberculin and 5.7 (7.3) mm for the control (P=.5). There were no differences between the number of positive tests found. None of the cultured tuberculins produced bacterial growth. CONCLUSIONS PPD RT-23 tuberculin does not appear to lose potency or sterility when vials have been opened for a week or a month.
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Affiliation(s)
- A Fernández-Villar
- Unidad de Tuberculosis de Vigo, Servicio de Neumología, Complejo Hospitalario Universitario Xeral-Cíes, Vigo, Joaquin Costa 60.6, 36004 Pontevedra, España.
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Fernández-Villar A, Gorís A, Otero M, Chouciño N, Vázquez R, Muñoz MJ, Piñeiro L. Conservación de la tuberculina PPD RT-23. Arch Bronconeumol 2004. [DOI: 10.1157/13063224] [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: 11/21/2022]
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Carretero J, Weruaga E, Hernández E, Burks D, Riesco JM, Rubio M, Briñón JG, Aijón J, Vázquez R, Alonso JR. Dopaminergic modulation of nNOS expression in the pituitary gland of male rat. ACTA ACUST UNITED AC 2003; 207:381-8. [PMID: 14618399 DOI: 10.1007/s00429-003-0355-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/26/2003] [Indexed: 10/26/2022]
Abstract
Nitric oxide is an unconventional transmitter since it is not transported and released by exocytosis. In the pituitary gland, nitric oxide is locally synthesised by gonadotroph and folliculo-stellate cells. Dopamine, the principal central inhibitory signal in prolactin release, may exert its inhibitory effects by stimulation of nitric oxide production. However, the effects of dopaminergic modulation on nitric oxide-producing pituitary cells have not been analysed. Therefore, we examined the effects of intraventricular administration of the dopamine antagonist haloperidol (40 microg) on the pituitary expression of neuronal nitric oxide synthase (nNOS) in male adult rats. In untreated and control animals, nNOS-positive cells were very similar. Two types of nNOS-positive cells appeared in the pars distalis: round or polygonal cells and stellate cells. Although some isolated cells were found, the nNOS-positive cells commonly appeared grouped in clusters close to blood vessels. nNOS immunoreactivity appeared as a uniform staining throughout the cytoplasm, including cell prolongations. The number and size of nNOS-expressing cells in the pituitary gland decreased significantly after treatment with haloperidol (p<0.01). To evaluate the potential direct effect of dopamine on pituitary cells, pituitary monolayer cultures were treated with dopamine during a time-course of 12 h. Our in vitro studies revealed that dopamine increases the percentage of nNOS-positive cells and augments cellular area (p<0.05). These results demonstrate that: (1) treatment of rats in vivo with a dopamine antagonist significantly decreases expression of nNOS in the pituitary and (2) in vitro dopamine exerts a direct effect on pituitary cultures by increasing nNOS-positive cells. Thus, these findings suggest that dopamine may function as a physiological stimulator of nNOS expression in the rat pituitary gland.
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Affiliation(s)
- J Carretero
- Laboratory of Neuroendocrinology, Institute of Neuroscience of Castilla y León, Department of Human Anatomy and Histology, Faculty of Medicine, University of Salamanca, Salamanca, Spain.
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Fernández-Villar A, Vázquez R, Piñeiro L. Conocimiento de la prueba de la tuberculina entre el personal de enfermería. Importancia de la formación. Arch Bronconeumol 2003. [DOI: 10.1157/13053222] [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: 11/21/2022]
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Alvarez R, García R, Luis J, López J, Gutiérrez A, González M, del Río L, Aguilera F, Vázquez R. [Bone mineral density in children with osteogenesis imperfecta]. Rev Esp Med Nucl 2003; 22:224-8. [PMID: 12846946 DOI: 10.1016/s0212-6982(03)72190-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECT Osteogenesis imperfecta is the term used for a group of disorders of collagen synthesis which cause increased bone fragility. The aim of our study was to evaluate the BMD in patients with OI. MATERIAL AND METHODS We used dual-energy x ray absorptiometry, Hologic QDR 4500W (DEXA), to compare the bone mineral density (BMD) of 8 patients aged from 3 years to 20 years who had osteogenesis imperfecta with an age and sex matched control group. RESULTS DEXA detected highly significant differences in BMD respecting control group. The mean BMD in the patients with osteogenesis imperfecta was 62.6 % of normal in lumbar spine (p < 0.01) and 63.01 % of normal in the femoral neck (p < 0.01) using Wilcoxon test. CONCLUSION DEXA is an objective, reproductible and sensitive method of measurement of BMD in children. It may help to stablish the diagnosis, to asses prognosis and possibly to monitor the response to different types of treatment.
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Affiliation(s)
- R Alvarez
- U.D. Medicina Nuclear. Hospital Universitario Virgen del Rocío. Sevilla. Spain.
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Carretero J, Vázquez G, Rubio M, Blanco E, Juanes JA, Pérez E, Burks D, Vázquez R. Postnatal differentiation of the immunohistochemical expression of aromatase P450 in the rat pituitary gland. Histol Histopathol 2003; 18:419-23. [PMID: 12647792 DOI: 10.14670/hh-18.419] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
At our laboratory, we have recently demonstrated the immunohistochemical expression of aromatase P450 in the pituitary glands of adult rats; this expression was seen to be sex-dependent. In order to determine whether the changes in the expression of the enzyme are related to changes in the gonadal sphere and whether the expression of the enzyme is related to the postnatal differentiation of hypophyseal cytology, in the present work we performed an immunohistochemical study in the rat pituitary gland from birth to old age. The immunohistochemical reaction to aromatase was evident and very generalized at 7 days after birth, with no large differences between the male and female animals. At 14 days the immunohistochemical reaction was decreased in the females, with no changes in the males. At 17 days, aromatase immunoreactivity in the pituitary glands of female rats was very weak whereas the males showed large numbers of reactive cells. These observations were further pronounced at 21 days and 2 months of life. At 24 months, the immunoreactivity found in the pituitary glands of the male rats had almost completely disappeared. Our results show that a postnatal differentiation in the immunohistochemical expression of aromatase occurs; this is tightly linked to sexual activity and is lost in old age. This suggests that hypophyseal aromatase would be related to the mechanisms of action of gonadal steroids on hypophyseal differentiation and secretion.
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Affiliation(s)
- J Carretero
- Laboratory of Neuroendocrinology, Institute of Neurosciences of Castilla y León, University of Salamanca, Spain.
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Fernández-Villar A, Vázquez R, Piñeiro L. Conocimiento de la prueba de la tuberculina entre el personal de enfermería. Importancia de la formación. Arch Bronconeumol 2003; 39:533-4. [PMID: 14588211 DOI: 10.1016/s0300-2896(03)75448-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Banguera-Hinestroza E, Cárdenas H, Ruiz-García M, Marmontel M, Gaitán E, Vázquez R, García-Vallejo F. Molecular identification of evolutionarily significant units in the Amazon River dolphin Inia sp. (Cetacea: Iniidae). J Hered 2002; 93:312-22. [PMID: 12547919 DOI: 10.1093/jhered/93.5.312] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The Amazon river dolphin, genus Inia, is endemic to the major river basins of northern South America. No previous studies have focused on the genetic structure of this genus. In this work, 96 DNA samples from specimens of this genus were collected in the Orinoco basin (four rivers), the Putumayo River, a tributary of the Colombian Amazon and the Mamoré, and the Tijamuchí and Ipurupuru rivers in theBolivian Amazon. These samples were used to amplify a fragment of 400 bp of the mitochondrial DNA (mtDNA) control region. In addition, 38 of these samples were also used to sequence 600 bp of the mitochondrial cytochrome b gene. The analysis of the population structure subdivision with an analysis of molecular variance (AMOVA) revealed important aspects about the genetic structure of Inia groups fromthese three geographically separate regions. By comparing the control region DNA and cytochrome b sequences, distinct types of nonshared haplotypes were observed. The net genetic divergence of control region sequences was 6.53% between the Orinoco and Bolivian rivers, 5.32% between the Putumayo and Bolivian rivers, and 2.50% between the Orinoco and Putumayo rivers. For the cytochrome b gene, these values were 2.48%, 2.98%, and 0.06%, respectively. The nucleotide sequences were analyzed phylogenetically using several genetic distance matrices and applying neighbor-joining, maximum likelihood, and maximum parsimony procedures. The results support the proposal to subdivide the Inia genus into at least two evolutionarily significant units: one confined to the Bolivian river basin and the other widely distributed across the Amazon and Orinoco basins.
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Affiliation(s)
- E Banguera-Hinestroza
- Laboratorio de Biología Molecular y Patogénesis, Departamento de Ciencias Fisiológicas, Facultad de Salud, Universidad del Valle, A.A 25360, Cali, Colombia
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Hernández-Galilea E, Barahona JM, Vázquez R, Castro R, Urrutia M, Sánchez F. [Effectivity versus toxicity of minoxidil as antiproliferative agent for lens epithelial cells. In vitro study]. Arch Soc Esp Oftalmol 2002; 77:361-8. [PMID: 12098807] [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: 02/25/2023]
Abstract
PURPOSE To evaluate the inhibitory effect of minoxidil on cultured proliferating lens epithelial cells (LECs) versus cytotoxic effect over corneal endothelial cells in culture, because minimum side effects over anterior chamber structures and particularly on corneal endothelium are required for successful therapy and prevention of posterior capsular opacification (PCO). METHODS New Zealand Rabbit LECs and corneal endothelium were cultured in DMEM at 35 degrees C in 5% CO2 in multiwells during 7 days. Both types of cells were exposed to minoxidil (1, 2 and 4 mM) for 1 and 24 hours. Control group and balanced salt solution group were included. After seven days multiwells were processed for light microscopy study. Morphometric study of cellular population of LECs and corneal endothelium cells were done using a computed planimetry system. RESULTS Dose-dependent effect on LECs proliferation was noted and non-confluent colonies of cells were observed on all treated groups. Morphologic changes in normal appearance of corneal endothelial cells after 1 hour of minoxidil treatment was observed and intracellular alterations were confirmed even with the lowest dose exposure. CONCLUSIONS Although effectiveness of minoxidil suppressing in vitro LECs proliferation could be suggest as a useful therapeutic agent to prevent PCO, however the inhibitory effect of different concentrations on corneal endothelial cells conditioned its possible use on ocular surgery.
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Almodóvar-Fabregas LJ, Segarra O, Colón N, Dones JG, Mercado M, Mejías-Aponte CA, Vázquez R, Abreu R, Vázquez E, Williams JT, Jiménez-Rivera CA. Effects of cocaine administration on VTA cell activity in response to prefrontal cortex stimulation. Ann N Y Acad Sci 2002; 965:157-71. [PMID: 12105092 DOI: 10.1111/j.1749-6632.2002.tb04158.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The repeated use of psychostimulants in humans has been associated with progressive enhancement of anxiety, panic attacks, and eventually paranoid psychosis. The appearance of such behaviors has been termed behavioral sensitization, which forms part of the basic pathological mechanisms involved in drug addiction. Psychostimulants act via a circuit involving the ventral tegmental area (VTA), prefrontal cortex (PFC), and nucleus accumbens. The PFC sends glutamatergic projections that activate dopaminergic neurons in the VTA. These projections provide an extremely important excitatory drive necessary for the development of sensitization. The effects of cocaine administration on the response of dopaminergic VTA cells to activation of the PFC have not been reported. Here the effects of acute cocaine administration on VTA cell response to PFC stimulation are examined. Statistical analysis of the changes in spontaneous activity and evoked response revealed a significant decrease in spontaneous activity at 1.0 mg/kg i.v. after cocaine treatment compared to baseline levels. The net effect was an increase in signal-to-noise ratio. Treatment with MK-801 at a dose of 2 mg/kg showed that the excitatory response was, at least partially, NMDA-mediated. Prazosin pretreatment (0.5 mg/kg i.p.) did not prevent a significant decrease in spontaneous activity brought about by cocaine (15 mg/kg, i.p.). Nonetheless, prazosin alone induced a significant decrease in the response to PFC stimulation when compared to baseline. In addition, iontophoretic application of norepinephrine (NE) onto VTA cells revealed that NE potentiated (19.2%), enhanced (26.9%), or suppressed (46.2%) the glutamate-evoked response in VTA cells. The results suggest that a possible role of cocaine in the process of sensitization might be to amplify the PFC-induced excitation at the VTA. Since the iontophoretic release of NE in almost half of the sampled cells produced similar effects to those of cocaine it may suggest a possible NE-mediated mechanism for cocaine actions.
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Vázquez R, Orihuela A. Effect of vaginal mucus and urine from ewes in estrus on plasma testosterone levels and weight gain of feedlot rams. Small Rumin Res 2001. [DOI: 10.1016/s0921-4488(01)00246-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Vázquez R, Blanco E, Sánchez F, Juanes JA, Rubio M, Santos M, Vázquez G, Hernández E, Riesco JM, Carretero J. Characterization of GFAP expression and cell proliferation in the rat median eminence following hypophysectomy. Histol Histopathol 2001; 16:1107-16. [PMID: 11642731 DOI: 10.14670/hh-16.1107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
To analyze whether the reorganization of the rat median eminence after hypophysectomy might be related to changes in glial fibrillary acidic protein (GFAP)- and cellular proliferation, the distribution of cells immunoreactive for GFAP and the proliferation rate of such cells were analyzed at 20, 40 and 60 days posthypophysectomy. For this study, four rostro-caudal regions of the median eminence were differentiated: the retrochiasmatic, preinfundibular, infundibular and postinfundibular regions. In each of these regions, three layers were studied: the ependymal, the internal and the external. At 20 and 40 days after hypophysectomy, significant increases in cellular proliferation affecting all three layers studied in the preinfundibular and infundibular regions were found. At the same time points, increases in GFAP expression were also observed. However, after 60 days, GFAP and proliferative cellular nuclear antigen (PCNA) expression decreased. Although variations of PCNA and GFAP levels were evident, no colocalisation of PCNA and GFAP was found in the cells of the median eminence in untreated or hypophysectomized rats when sections were analyzed by double immunohistochemical staining. Our results suggest that reorganization of median eminence involves alterations (or modulation) of GFAP-immunoreactive cells together with a proliferation of cells that are not GFAP-immunoreactive. This study also demonstrates that this reorganization is completed within the first two months after hypophysectomy.
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Affiliation(s)
- R Vázquez
- Department of Human Anatomy and Histology, Faculty of Medicine, University of Salamanca, Spain.
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García-Pérez MA, Allende LM, Corell A, Paz-Artal E, Varela P, López-Goyanes A, García-Martin F, Vázquez R, Sotoca A, Arnaiz-Villena A. Role of Nijmegen breakage syndrome protein in specific T-lymphocyte activation pathways. Clin Diagn Lab Immunol 2001; 8:757-61. [PMID: 11427422 PMCID: PMC96138 DOI: 10.1128/cdli.8.4.757-761.2001] [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] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Nijmegen breakage syndrome (NBS) is a genetic disorder characterized by immunodeficiency, microcephaly, and "bird-like" facies. NBS shares some clinical features with ataxia telangiectasia (AT), including increased sensitivity to ionizing radiation, increased spontaneous and induced chromosome fragility, and strong predisposition to lymphoid cancers. The mutated gene that results in NBS codes for a novel double-stranded DNA break repair protein, named nibrin. In the present work, a Spanish NBS patient was extensively characterized at the immunological and the molecular DNA levels. He showed low CD3(+)-cell numbers and an abnormal low CD4(+) naive cell/CD4(+) memory cell ratio, previously described in AT patients and also described in the present report in the NBS patient. The proliferative response of peripheral blood lymphocytes in vitro to mitogens is deficient in NBS patients, but the possible link among NBS mutations and the abnormal immune response is still unknown.
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Affiliation(s)
- M A García-Pérez
- Department of Immunology, Hospital Universitario 12 de Octubre, Universidad Complutense, Carretera de Andalucia, 28041 Madrid, Spain
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Rubio M, Carretero J, Sánchez F, Riesco JM, Vázquez R, Vázquez R. Estradiol influences the LH response to met-enkephalin. An immunocytochemical and morphometric study. Acta Anat (Basel) 2001; 145:382-6. [PMID: 10457781 DOI: 10.1159/000147394] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
In order to test the possible role of estradiol in the response of the LH-adenohypophyseal cells to the administration of met-enkephalin in the albino male rat, an immunocytochemical (peroxidase-antiperoxidase), morphometric (cellular and nuclear areas and numerical density) and radioimmunoassay (LH serum levels at the moment of sacrifice) study was carried out. The intraventricular administration of met-enkephalin (150 micrograms in 25 microliters of distilled water) does not produce any changes in the parameters considered. However, when the animals were pretreated with estradiol (chronically, 15 days), met-enkephalin produced a significant decrease in all the parameters considered.
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Affiliation(s)
- M Rubio
- Departamento de Anatomía e Histología Humanas, Facultad de Medicina, Universidad de Salamanca, Spain
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Raich RM, Mora M, Sánchez-Carracedo D, Torras J, Viladrich MC, Zapater L, Mancilla JM, Vázquez R, Álvarez-Rayón G. A cross-cultural study on eating attitudes and behaviours in two Spanish-speaking countries: Spain and Mexico. Eur Eat Disorders Rev 2001. [DOI: 10.1002/erv.372] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Hernández-Galilea E, Sánchez F, Guzmán K, Moro MJ, Vázquez R, Barahona JM. [Effect of mitomycin C on corneal endothelium cells. In vitro study]. Arch Soc Esp Oftalmol 2000; 75:515-21. [PMID: 11151212] [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: 02/18/2023]
Abstract
PURPOSE Mitomycin C is an antibiotic with a demonstrated antiproliferative capacity as an inhibitor of fibroblastic cells proliferation. Its use has been extended in glaucoma surgery. In the present study, we evaluated mitomycin C effect on cell culture monolayer of rabbit corneal endothelium. METHODS The source of corneal endothelium for cell culture was New Zealand albino rabbit eyes. Desegregation of cells was carried out with mechanic and enzymatic dissociation from corneal endothelium and Descemet membrane. Culture medium was EMEM. Three treatment groups of plates were exposed to three different concentrations of mitomycin C 2x10(-3) mg/ml, 2x10(-2) mg/ml and 2x10(-1) mg/ml. Control and witness plate groups were also established. The morphometric study was performed through quantitative analysis with a video system connected to the light microscope. RESULTS Different morphological changes related with cell size, cytoplasm and dyeing were seen at the morphological study and several degenerative signs were established indicating cellular death and a very decrease of the cellular population. In the groups treated with minimal dose (2x10(-3) mg/ml) and 3 days evolution time, cellular population was 434 cels/mm(2), 7 evolution days group cell density was 300.97cels/mm(2), and at 14 days it was 201.88 cels/mm(2). The percentage of survival in all the groups of treated cells was under 50%. CONCLUSIONS Mitomycin C in concentrations and exposure time as used in this study has a potent lethal effect on this cellular type that compromises to a greater or smaller extent their function and integrity.
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Affiliation(s)
- E Hernández-Galilea
- Departamento de Cirugía, Area de Oftalmología, Universidad de Salamanca, Facultad de Medicina, Salamanca, España
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Raboso E, Navas C, Martínez Vidal A, Vázquez R. [Fibroglandular hamartoma of the nasal cavity: case description and review]. Acta Otorrinolaringol Esp 2000; 51:445-7. [PMID: 11000690] [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: 02/17/2023]
Abstract
A fibroglandular hamartoma of the nasal cavity was found in a patient with nasal polyposis. The only symptom had been bilateral nasal obstruction for years. The tumor was removed by lateral rhinotomy. Our initial differential diagnosis included nasal glioma and inverted papilloma, but this rare tumor was not suspected. Four years after surgery, the patient is well and the risk of recurrence is deemed to be very low. Surgeons and pathologists must be aware of these and other uncommon tumors of the nose because some may require special diagnostic and therapeutic procedures.
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Affiliation(s)
- E Raboso
- Departamento de ORL, Hospital Ramón y Cajal, Madrid
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Vázquez R, Caref EB, Torres F, Reina M, Guerrero JA, El-Sherif N. Reproducibility of time-domain and three different frequency-domain techniques for the analysis of the signal-averaged electrocardiogram. J Electrocardiol 2000; 33:99-105. [PMID: 10819403 DOI: 10.1016/s0022-0736(00)80079-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Because time-domain (TD) analysis of the signal-averaged ECG (SAECG) has some limitations that limit its use, several frequency-domain analysis techniques were developed in an attempt to improve the diagnostic ability of the SAECG. However, it is not known how reliable these techniques are at detecting late potentials. This prospective study compares the short-term reproducibility of 4 analysis techniques: TD analysis, spectral temporal mapping (STM), spectral turbulence analysis (STA), and acceleration spectrum analysis (ASA), in a large series of normal patients and post-myocardial infarction (MI) patients. Two consecutive SAECGs were recorded in 634 patients that were divided into 3 groups: 117 remote MI patients undergoing programmed electrical stimulation for the inducibility of ventricular tachycardia (Group 1), 407 consecutive acute MI survivors (Group 2), and in 110 healthy volunteers (Group 3). The diagnostic reproducibility of the 4 techniques was evaluated by comparing rates of inconsistent results (1 normal and the other abnormal). The numeric reproducibility for each technique was assessed by comparing the normalized differences of each single SAECG parameter between the 2 recordings. Inconsistent results of diagnostic reproducibility were observed in 4.1%, 6.9%, 9.8%, and 18.0%, with TD, STA, ASA, and STM, respectively. Comparisons of these rates were significantly different (P < .05) except between STA and ASA (P = .07). The numeric reproducibility was highest for TD parameters, lowest for STM factors of normality, and intermediate for STA and ASA indices. TD analysis remains the most reproducible SAECG analysis technique, whereas STM showed the worst reproducibility, which limits its clinical applicability. STA and ASA provide an acceptable intermediate reproducibility, the former being slightly, although not significantly, more reproducible than the latter.
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Affiliation(s)
- R Vázquez
- Cardiology Unit of Valme University Hospital, Seville, Spain
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Sánchez F, López MJ, del Campo J, Gutiérrez JL, Moreno MN, Vázquez R. Changes of environment and darkness enhance the NADPH-diaphorase staining in the rat paraventricular nucleus. Neuropeptides 1999; 33:487-91. [PMID: 10657529 DOI: 10.1054/npep.1999.0767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Nitric oxide (NO) plays an important role in the maintenance of autonomic homeostasis of the body. NO-producing neurons are activated in the brain during exposure to different levels of environmentally produced stimulations. These facts prompted the authors to investigate the levels of activation of NO-producing neurons of the paraventricular nucleus of the hypothalamus (PVN) following change of environment and darkness. Cryostat sections were cut and processed for the histochemical detection of the NADPH-diaphorase (ND)-activity. Following change of the environment and darkness for 12 and 24 h, statistical analysis displayed a significant increase in the number of ND-neurons, especially in the posterior magnocellular and the lateral parvicellular subdivisions of the PVN. These data indicate that the ND-neurons of the PVN are influenced by changes of the environment and darkness.
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Affiliation(s)
- F Sánchez
- Department of Human Anatomy and Histology, Faculty of Medicine, Campus Unamuno, Salamanca.
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Abstract
A sialolith from a minor salivary gland of the mucosa of the upper lip was studied morphologically and analytically. Under stereoscopic microscopic visualisation, no core or any concentric laminar structure was found in the sialolith and it had a transparent glassy appearance. Scanning electron microscopy revealed differences between the internal structure of the sialolith and its external structure. No microbes were observed but some mineralized inclusion bodies were seen. X-ray diffraction indicated the absence of inorganic crystals in the sialolith, while energy dispersive x-ray microanalysis revealed a high content of S followed by Ca, Si and Na and little and scarce P on the fracture surface, with S, Na, Ca and P being distributed throughout the external coating of the sialolith. The results suggest that the sialolith was young and consisted of a crystalloid body with an incipient coating undergoing calcification.
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Affiliation(s)
- J M Riesco
- Department of Human Anatomy and Histology, School of Medicine, University of Salamanca, Spain
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Juanes JA, Riesco JM, Sánchez F, Carretero J, Blanco E, Vázquez R. Glial fibrillary acidic protein-like immunoreactive ependymal elements in the third ventricle of the rat. A study at different stages of development. Acta Anat (Basel) 1999; 145:364-9. [PMID: 10457777 DOI: 10.1159/000147390] [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] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Using the peroxidase-antiperoxidase method a study was made of the cells immunoreactive to glial fibrillary acidic protein (GFAP) anti-serum in the ependyma of the third ventricle of the rat at different stages of growth. Most of the ependymal cells of the third ventricle were seen to be unreactive to this protein; however, it was sometimes possible to observe some GFAP-immunoreactive ependymocytes and occasionally other immunoreactive cellular types, such as tanycytes and supraependymal cells. Despite this, the most frequent localization of the elements immunoreactive to the protein adopted the shape of an immunoreactive subependymal band situated parallel to the ventricular wall. As the weights of the animals increased an increase in the elements immunoreactive to this protein could be observed in all the zones considered, there being no differences between the male and female animals.
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Affiliation(s)
- J A Juanes
- Departamento de Anatomía e Histología Humanas, Facultad de Medicina, Universidad de Salamanca, Spain
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Calleja J, Vázquez R, López Baena J, Santos L, Clemente G. [Orthotopic liver transplantation in Langerhans cell histiocytosis]. Rev Esp Enferm Dig 1999; 91:594. [PMID: 10491492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
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Sánchez F, Moreno MN, Vacas P, Carretero J, Vázquez R. Swim stress enhances the NADPH-diaphorase histochemical staining in the paraventricular nucleus of the hypothalamus. Brain Res 1999; 828:159-62. [PMID: 10320736 DOI: 10.1016/s0006-8993(99)01295-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Regulatory control of the hypothalamic-pituitary-adrenocortical axis (HPA) originates principally from the paraventricular nucleus (PVN), which contains an important population of nitric oxide synthesizing (NOS) neurons. In the present study, the effect of swim stress upon these neurons was investigated by means of the NADPH-diaphorase (ND) histochemical technique. A significant increase in the number of ND-neurons was observed following forced swim, especially after 30 min. These data confirm the involvement of NOS-neurons of the PVN in the response to different types of acute stressors.
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Affiliation(s)
- F Sánchez
- Department of Human Anatomy and Histology, Faculty of Medicine, University of Salamanca, Campus Unamuno, 37007, Salamanca, Spain.
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Polo JR, Vázquez R, Polo J, Sanabia J, Rueda JA, Lopez-Baena JA. Brachiocephalic jump graft fistula: an alternative for dialysis use of elbow crease veins. Am J Kidney Dis 1999; 33:904-9. [PMID: 10213647 DOI: 10.1016/s0272-6386(99)70424-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Elbow crease fistula can be an alternative for autologous vascular access. Either brachiocephalic or brachiobasilic fistulas could be chosen according to the venous anatomy at the elbow crease. When a median antecubital vein is not present, the cephalic vein is usually too far away from the brachial artery. Thus, a end-to-side fistula must usually be performed after an extensive dissection of the distal part of the vein. In this way, only the proximal cephalic vein can be used for dialysis. To overcome this drawback, a brachiocephalic jump graft fistula was designed. A short segment of polytetrafluoroethylene graft, 6 mm in diameter, is tunneled under the skin and anastomosed to the artery and vein through two short longitudinal skin incisions. From 1981 to 1995, 222 brachiocephalic graft jump fistulas were constructed. The mean age of the patients was 56.1 years, 20% had diabetic nephropathy, and 61.7% had a previously failed angioaccess. Follow-up was obtained in 92.4% of the patients, and overall follow-up was 6,665 fistula-months. Early failure was observed in 4% of the cases. The complication rate was two episodes per 100 fistula-months of follow-up. Primary patency rates (event-free patency) were 85%, 67%, 48%, and 34% at 1, 3, 5, and 7 years. Secondary patency rates (overall patency) were 85%, 72%, 56%, and 43% at 1,3, 5, and 7 years. There were no differences between primary and secondary curves. Brachiocephalic graft jump fistula is a reliable technical variation of elbow crease fistulas for dialysis and can be another alternative to graft access when the cephalic vein is dominant at the elbow crease.
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Affiliation(s)
- J R Polo
- Department of Surgery, Hospital General Universitario Gregorio Marañón, Madrid, Spain
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Toledo A, Larralde C, Fragoso G, Gevorkian G, Manoutcharian K, Hernández M, Acero G, Rosas G, López-Casillas F, Garfias CK, Vázquez R, Terrazas I, Sciutto E. Towards a Taenia solium cysticercosis vaccine: an epitope shared by Taenia crassiceps and Taenia solium protects mice against experimental cysticercosis. Infect Immun 1999; 67:2522-30. [PMID: 10225916 PMCID: PMC115999 DOI: 10.1128/iai.67.5.2522-2530.1999] [Citation(s) in RCA: 72] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The Taenia crassiceps recombinant antigen KETc7 has been shown to be effective as a vaccine against experimental murine cysticercosis, a laboratory model used to test potentially promising molecules against porcine Taenia solium cysticercosis. Based on the deduced amino acid sequence of this proline-rich polypeptide, three fragments, GK-1, GK-2, and GK-3, were chemically synthesized in linear form. Of the three peptides, only GK-1 induced sterile protection against T. crassiceps cysticercosis in 40 to 70% of BALB/cAnN male mice. GK-1 is an 18-amino-acid peptide which contains at least one B-cell epitope, as demonstrated by its ability to induce an antibody response to the peptide and T. crassiceps antigen without need of a carrier protein. Immunofluorescence studies revealed that anti-GK1 antibodies strongly react with the native protein in the tegument of T. crassiceps and also with anatomical structures of T. solium eggs, oncospheres, cysticercus, and tapeworm. GK-1 also contains at least one T-cell epitope, capable of stimulating the proliferation of CD8(+) and to a lower extent CD4(+) T cells primed either with the free peptide or T. crassiceps total antigen. The supernatant of the stimulated cells contained high levels of gamma interferon and low levels of interleukin-4. Similar results were obtained with T cells tested for intracellular cytokine production, an indication of the peptide's capacity to induce an inflammatory response. The remarkable protection induced by GK-1 immunization, its physicochemical properties, and its presence in all developmental stages of T. solium point to this synthetic peptide as a strong candidate in the construction of a synthetic vaccine against T. solium pig cysticercosis.
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Affiliation(s)
- A Toledo
- Department of Immunology, Instituto de Investigaciones Biomédicas, UNAM, México D.F. 04510, México
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