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Galbán-Malagón CJ, Zapata J, Perez-Venegas DJ, Vargas R, Latorre-Padilla N, Luarte T, Ahrendt C, Hirmas-Olivares A, Gómez-Aburto V, Tapia P, Isamit V, Arce P, Sánchez C, Pozo K. Occurrence, source estimation, and risk assessment of Polycyclic Aromatic Hydrocarbons in coastal seawaters from the Quintero Industrial Complex (Valparaíso, Chile). Sci Total Environ 2023; 878:162957. [PMID: 36958545 DOI: 10.1016/j.scitotenv.2023.162957] [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: 11/11/2022] [Revised: 02/19/2023] [Accepted: 03/15/2023] [Indexed: 05/13/2023]
Abstract
In the 1960s, the Quintero industrial complex was inaugurated in Chile. This began a history of dramatic anthropogenic impacts on the Chilean coast. Among the known, we could mention high atmospheric emissions of chemicals due to combustion processes and frequent oil spills. For this reason, we surveyed the concentrations of fifteen EPAPAHs in the surface coastal waters of the Quintero Bay area in 2015. The levels found are in the range of the highest levels when reviewing the literature (0.97 μg L-1 up to 9.84 μg L-1). The highest levels were found in the vicinity of the industrial complex and decreased in the other two zones. The concentration of individual compounds significantly exceeds the levels recommended by the EPA (Environmental Protection Agency) and the EU water framework directive (WFD). The risk estimations revealed that PAH concentrations represent high-risk for wildlife. Molecular ratios of PAHs were used to identify the possible sources, being these were mainly of pyrogenic origin, agreeing with an origin in the combustion of wood, coal, grass, and fossil fuels. This study contributes to the first data for surface water in a country's highly impacted industrial coastal area.
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Affiliation(s)
- C J Galbán-Malagón
- GEMA Center for Genomics, Ecology & Environment, Universidad Mayor, Camino La Pirámide 5750, Huechuraba, Santiago, Chile; Anillo en Ciencia y Tecnología Antártica POLARIX, Chile; Institute of Environment, Florida International University, University Park, Miami, FL 33199, USA.
| | - J Zapata
- Centro de Investigación e Innovación para el Cambio Climático, Facultad de Ciencias, Universidad Santo Tomás, Santiago, Chile; Estación Costera de Investigaciones Marinas, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - D J Perez-Venegas
- Centro de Investigación y Gestión de Recursos Naturales (CIGREN), Instituto de Biología, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
| | - R Vargas
- GEMA Center for Genomics, Ecology & Environment, Universidad Mayor, Camino La Pirámide 5750, Huechuraba, Santiago, Chile; Anillo en Ciencia y Tecnología Antártica POLARIX, Chile
| | - N Latorre-Padilla
- Doctorado en Medicina de la Conservación, Facultad de Ciencias de la Vida, Universidada Andrés Bello, Santiago, Chile; Departamento de Ecología y Biodiversidad, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago 8370251, Chile; Centro de Investigación Marina Quintay (CIMARQ), Facultad de Ciencias de la Vida, Universidad Andrés, Bello, Quintay, Valparaíso 2531015, Chile; Center of Applied Ecology and Sustainability (CAPES), Santiago 8331150, Chile; Instituto Milenio en Socio-Ecología Costera (SECOS), Santiago 8370251, Chile
| | - T Luarte
- GEMA Center for Genomics, Ecology & Environment, Universidad Mayor, Camino La Pirámide 5750, Huechuraba, Santiago, Chile; Anillo en Ciencia y Tecnología Antártica POLARIX, Chile; Doctorado en Medicina de la Conservación, Facultad de Ciencias de la Vida, Universidada Andrés Bello, Santiago, Chile
| | - C Ahrendt
- Fundación Acción Natural, Laguna, Valparaíso, Chile
| | - A Hirmas-Olivares
- GEMA Center for Genomics, Ecology & Environment, Universidad Mayor, Camino La Pirámide 5750, Huechuraba, Santiago, Chile; Anillo en Ciencia y Tecnología Antártica POLARIX, Chile
| | - V Gómez-Aburto
- GEMA Center for Genomics, Ecology & Environment, Universidad Mayor, Camino La Pirámide 5750, Huechuraba, Santiago, Chile; Anillo en Ciencia y Tecnología Antártica POLARIX, Chile
| | - P Tapia
- GEMA Center for Genomics, Ecology & Environment, Universidad Mayor, Camino La Pirámide 5750, Huechuraba, Santiago, Chile
| | - V Isamit
- GEMA Center for Genomics, Ecology & Environment, Universidad Mayor, Camino La Pirámide 5750, Huechuraba, Santiago, Chile
| | - P Arce
- GEMA Center for Genomics, Ecology & Environment, Universidad Mayor, Camino La Pirámide 5750, Huechuraba, Santiago, Chile
| | - C Sánchez
- Escuela de Geología, Universidad Mayor, San Pío X 2422, 7510041 Providencia, Región Metropolitana, Chile
| | - K Pozo
- Masaryk University, Research Centre for Toxic Compounds in the Environment (RECETOX), Kamenice 753/5, 62500 Brno, Czech Republic; Universidad San Sebastián, Facultad de Ingeniería, Arquitectura y diseño, Lientur 1457, 4030000 Concepción, Chile.
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Ubeda C, Vano E, Perez MD, Jímenez P, Ramirez R, Nader A, Miranda P, Azcurra P, Damsky J, Capdevila S, Oliveira M, Albuquerque J, Bocamino R, Schelin H, Yagui A, Aguirre D, Riquelme N, Cardenas L, Álvarez A, Mosquera W, Arias F, Gutierrez R, De la Mora R, Rivera T, Zapata J, Araujo P, Chiesa P. Setting up regional diagnostic reference levels for pediatric interventional cardiology in Latin America and the Caribbean countries: preliminary results and identified challenges. J Radiol Prot 2022; 42:031513. [PMID: 35940166 DOI: 10.1088/1361-6498/ac87b7] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 08/08/2022] [Indexed: 06/15/2023]
Abstract
The goal of the present study was to propose a set of preliminary regional diagnostic reference levels (DRLs) for pediatric interventional cardiology (IC) procedures in Latin America and the Caribbean countries, classified by age and weight groups. The study was conducted in the framework of the Optimization of Protection in Pediatric Interventional Radiology in Latin America and the Caribbean program coordinated by the World Health Organization and the Pan American Health Organization in cooperation with the International Atomic Energy Agency. The first step of the program was focused on pediatric IC. Dose data from diagnostic and therapeutic procedures were collected between December 2020 and December 2021. Regional DRLs were set as the third quartile of patient dose data (kerma area product) collected in 18 hospitals from 10 countries in an initial sample of 968 procedures. DRLs were set for four age bands and five weight ranges. The values obtained for the four age bands (<1 yr, 1 to <5 yr, 5 to <10 yr and 10 to <16 yr) were 2.9, 6.1, 8.8 and 14.4 Gy cm2for diagnostic procedures, and 4.0, 5.0, 10.0 and 38.1 Gy cm2for therapeutic procedures, respectively. The values obtained for the five weight bands (<5 kg, 5 to <15 kg, 15 to <30 kg, 30 to <50 kg and 50 to <80 kg) were 3.0, 4.5, 8.1, 9.2 and 26.8 Gy cm2for diagnostic procedures and 3.7, 4,3, 7.3, 16.1 and 53.4 Gy cm2for therapeutic procedures, respectively. While initial data were collected manually as patient dose management systems (DMSs) were not available in most of the hospitals involved in the program, a centralized automatic DMS for the collection and management of patient dose indicators has now been introduced and is envisaged to increase the sample size. The possibility of alerting on high dose values and introducing corrective actions will help in optimization.
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Affiliation(s)
- C Ubeda
- Departamento de Tecnología Médica, Facultad de Ciencias de la Salud, Universidad de Tarapacá, Arica, Chile
| | - E Vano
- Radiology Department, Faculty of Medicine, Complutense University and IdIS, San Carlos Hospital, 28040 Madrid, Spain
| | - M D Perez
- World Health Organization (WHO), Geneva, Switzerland
| | - P Jímenez
- Pan American Health Organization (PAHO), Washington, DC, United States of America
| | - R Ramirez
- International Atomic Energy Agency (IAEA), Vienna, Austria
| | - A Nader
- International Atomic Energy Agency (IAEA), Vienna, Austria
| | - P Miranda
- Luis Calvo Mackenna's Hospital, AntonioVaras 360, Santiago, Chile
| | - P Azcurra
- Hemodynamic Service, Italian Hospital, Buenos Aires, Argentina
| | - J Damsky
- Hemodynamic Service, Pedro de Elizalde Children's Hospital, Buenos Aires, Argentina
| | - S Capdevila
- Hemodynamic Service, Santísima Trinidad Children's Hospital, Córdova, Argentina
| | - M Oliveira
- Department of Health Technology and Biology, Federal Institute of Bahia, Salvador, Brazil
| | - J Albuquerque
- University Hospital of the Federal University of Maranhão, San Luis, Brasil
| | - R Bocamino
- Clinical Hospital of the Federal University of Paraná, Curitiba, Brasil
| | - H Schelin
- Pequeno Príncipe Hospital, Curitiba, Brasil
| | - A Yagui
- Pequeno Príncipe Hospital, Curitiba, Brasil
| | - D Aguirre
- Hemodynamic Service, Roberto del Rio Children's, Santiago, Chile
| | - N Riquelme
- Hemodynamic Service, Roberto del Rio Children's, Santiago, Chile
| | - L Cardenas
- Hemodynamic Service, Santa Maria Clinic, Santiago, Chile
| | - A Álvarez
- Hemodynamic Service, Santa Maria Clinic, Santiago, Chile
| | - W Mosquera
- Valle del Lili Foundation University Hospital ICESI, Cali, Colombia
| | - F Arias
- National Children's Hospital, San José, Costa Rica
| | - R Gutierrez
- National Children's Hospital, San José, Costa Rica
| | - R De la Mora
- National Directorate of Environmental Health, Ministry of Public Health, Havana, Cuba
| | - T Rivera
- Center for Research in Applied Sciences and Advanced Technology Legaria, IPN, Ciudad de México, Mexico
| | - J Zapata
- National Institute of Child Health St. Borja, Lima, Peru
| | - P Araujo
- National Cardiovascular Institute, Lima, Peru
| | - P Chiesa
- Children's Cardiology Institute, Montevideo, Uruguay
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Zapata J, Gallardo A, Romero C, Valenzuela R, Garcia-Diaz DF, Duarte L, Bustamante A, Gasaly N, Gotteland M, Echeverria F. n-3 polyunsaturated fatty acids in the regulation of adipose tissue browning and thermogenesis in obesity: Potential relationship with gut microbiota. Prostaglandins Leukot Essent Fatty Acids 2022; 177:102388. [PMID: 34995899 DOI: 10.1016/j.plefa.2021.102388] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 10/03/2021] [Accepted: 12/27/2021] [Indexed: 02/06/2023]
Abstract
BACKGROUND Obesity is a worldwide public health problem characterized by fat tissue accumulation, favouring adipose tissue and metabolic alterations. Increasing energy expenditure (EE) through brown adipose tissue activation and white adipose tissue (WAT) browning has gained relevance as a therapeutic approach. Different bioactive compounds, such as n-3 polyunsaturated fatty acids (PUFA), have been shown to induce those thermogenic effects. This process is regulated by the gut microbiota as well. Nevertheless, obesity is characterized by gut microbiota dysbiosis, which can be restored by weight loss and n-3 PUFA intake, among other factors. Knowledge gap: However, the role of the gut microbiota on the n-3 PUFA effect in inducing thermogenesis in obesity has not been fully elucidated. OBJECTIVE This review aims to elucidate the potential implications of this interrelation on WAT browning adiposw sittue (BAT), BAT activity, and EE regulation in obesity models.
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Affiliation(s)
- J Zapata
- Escuela de Medicina, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - A Gallardo
- Escuela de Medicina, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - C Romero
- Escuela de Medicina, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - R Valenzuela
- Departamento de Nutricion, Facultad de Medicina, Universidad de Chile, Santiago, Chile; Nutritional Sciences Department, Faculty of Medicine, University of Toronto, Toronto ON, Canada
| | - D F Garcia-Diaz
- Departamento de Nutricion, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - L Duarte
- Departamento de Nutricion, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - A Bustamante
- Departamento de Nutricion, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - N Gasaly
- Departamento de Nutricion, Facultad de Medicina, Universidad de Chile, Santiago, Chile; ICBM: Laboratory of Innate Immunity, Program of Immunology, Institute of Biomedical Sciences, Facultad de Medicina, Universidad de Chile, Chile
| | - M Gotteland
- Departamento de Nutricion, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - F Echeverria
- Departamento de Nutricion, Facultad de Medicina, Universidad de Chile, Santiago, Chile; Carrera de Nutricion y Dietetica, Departamento Ciencias de la Salud, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.
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Abstract
Summary
The covariance structure of multivariate functional data can be highly complex, especially if the multivariate dimension is large, making extensions of statistical methods for standard multivariate data to the functional data setting challenging. For example, Gaussian graphical models have recently been extended to the setting of multivariate functional data by applying multivariate methods to the coefficients of truncated basis expansions. However, compared with multivariate data, a key difficulty is that the covariance operator is compact and thus not invertible. This paper addresses the general problem of covariance modelling for multivariate functional data, and functional Gaussian graphical models in particular. As a first step, a new notion of separability for the covariance operator of multivariate functional data is proposed, termed partial separability, leading to a novel Karhunen–Loève-type expansion for such data. Next, the partial separability structure is shown to be particularly useful in providing a well-defined functional Gaussian graphical model that can be identified with a sequence of finite-dimensional graphical models, each of identical fixed dimension. This motivates a simple and efficient estimation procedure through application of the joint graphical lasso. Empirical performance of the proposed method for graphical model estimation is assessed through simulation and analysis of functional brain connectivity during a motor task.
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Affiliation(s)
- J Zapata
- Department of Statistics and Applied Probability, University of California Santa Barbara, Santa Barbara, California 93106, U.S.A
| | - S Y Oh
- Department of Statistics and Applied Probability, University of California Santa Barbara, Santa Barbara, California 93106, U.S.A
| | - A Petersen
- Department of Statistics and Applied Probability, University of California Santa Barbara, Santa Barbara, California 93106, U.S.A
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5
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González N, Zapata J, Martínez V, Gadow R, García J. Manufacturing parameter analysis for alumina coating on steel substrate by automated image processing of isolated splats samples. PLoS One 2020; 15:e0240928. [PMID: 33119624 PMCID: PMC7595332 DOI: 10.1371/journal.pone.0240928] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 10/05/2020] [Indexed: 11/29/2022] Open
Abstract
Thermal spray technology, which involves the Atmospheric Plasma Spraying (APS), encompasses a category of coating processes that supply surface properties to protect or improve the performance of a substrate or component. The coating produced by this technology is built by overlapped splats, whose morphology determines the coating properties. In the same way, the splats obtained in a separated distribution by interposing a perforated mask but using the same thermal spray parameters, has a relationship with the overlapped splats inside the coating. The samples with isolated splats have the advantage of being faster and cheaper to generate and analyse. This article analyses alumina plasma-sprayed splats on steel substrates by image processing techniques, which recognize individual splats and their corresponding morphology (doughnut and pancake) parameters. These parameters allow the user to efficiently classify the splats. After that classification, a quality control can be implemented by comparison between the original and checked sample of isolated splats and a new sample obtained during a small interruption in the normal operation. Additionally, these parameters obtained in an automated way can be used to evaluate the effect of different selections of spraying process parameters.
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Affiliation(s)
- N. González
- Departamento de Ingeniería Mecánica, Universidad Polite´cnica de Cartagena, Cartagena, Spain
| | - J. Zapata
- Departamento de Electrónica, Tecnología de Computadoras y Proyectos, Universidad Politécnica de Cartagena, Cartagena, Spain
| | - V. Martínez
- Institute for Manufacturing Technologies of Ceramic Components and Composites (IMCCC), University of Stuttgart, Stuttgart, Germany
| | - R. Gadow
- Institute for Manufacturing Technologies of Ceramic Components and Composites (IMCCC), University of Stuttgart, Stuttgart, Germany
| | - J. García
- Departamento de Ingeniería Mecánica, Universidad Polite´cnica de Cartagena, Cartagena, Spain
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Friedman B, Irizarry E, Zapata J, Gallagher E. 254 A Randomized Double-blind Clinical Trial of Naproxen + Diazepam Versus Naproxen + Placebo for Emergency Department Patients With Acute, Non-Radicular Low Back Pain. Ann Emerg Med 2016. [DOI: 10.1016/j.annemergmed.2016.08.269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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González Obando P, Celis J, Ortega H, Ortega J, Londoño A, Zapata J, Celis D. Catatonia-like syndrome due to hypoxic ischemic encephalopathy: a case report. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.940] [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: 11/16/2022]
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Lotshaw A, Luedtke-Hoffmann K, Meyer D, Bourdeau N, Coulter M, Quinn- Scott C, Zapata J. 219 Walk Speed Trends in Patients with End-Stage Lung Disease Awaiting and after Lung Transplantation. J Heart Lung Transplant 2012. [DOI: 10.1016/j.healun.2012.01.218] [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: 10/28/2022] Open
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Affiliation(s)
- M.J. Walker
- Area de Antropología Física, Departamento de Zoología y Antropología Física, Facultad de Biología, Campus Universitario de Espinardo, Universidad de Murcia, 30100 Murcia, Spain
| | - J. Zapata
- Area de Antropología Física, Departamento de Zoología y Antropología Física, Facultad de Biología, Campus Universitario de Espinardo, Universidad de Murcia, 30100 Murcia, Spain
| | | | - E. Trinkaus
- Department of Anthropology, Washington University, Saint Louis, MO 63130, USA
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Zapata J, Fernandez F, Berland MA, Colazo M, Peralta O, Felmer R, Ratto MH. 304 EFFECT OF SYNTHETIC OVIDUCT FLUID MEDIUM (SOF) v. OPTIMIZED SIMPLE POTASSIUM MEDIUM (KSOM) ON EMBRYO DEVELOPMENT OF IN VITRO-FERTILIZED BOVINE OOCYTES. Reprod Fertil Dev 2010. [DOI: 10.1071/rdv22n1ab304] [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: 11/23/2022] Open
Abstract
The objective of the study was to compare the effect of 2 free serum chemically defined media, synthetic oviduct fluid medium (SOF) and optimized simple potassium medium (KSOM) on embryo development of in vitro-produced embryos. Bovine ovaries were collected from a local abattoir. Cumulus oocyte complexes (COC) were obtained by follicular aspiration of 3- to 6-mm follicles and in vitro-matured in TCM-199 for 24 h at 39°C, 5% CO2, and high humidity. After IVM, COC were co-incubated with sperm at a concentration of 1.5 × 106 spermatozoa per mL in TALP medium for 18 h at 39°C, 5% CO2, and high humidity. Presumptive zygotes were randomly assigned to SOF (n = 312) or KSOM (n = 290) media, both supplemented with essential and nonessential amino acids plus 0.6% BSA. Zygotes were cultured at 39°C, 5% CO2, 5% O2, 90% N2, and high humidity for 9 days. Cleavage rate was evaluated on Day 2 (Day 0 = day of insemination) and the number of blastocysts and hatched blastocysts were recorded on Days 8 and 9. Expanded blastocysts from Day 8 (n = 45/per culture medium) were fixed and stained with bisbenzimide (Hoechst 33242), and the total number of embryonic nuclei was counted by fluorescence microscopy (Optiphot, Nikon, Tokyo, Japan). The study was conducted in 6 replicates for embryo development assessment and 3 replicates for embryonic nuclei counting. Data were analyzed using Fisher’s exact test and Student’s t-test. The percentage of presumptive zygotes to develop into 2 to 4 cells (22.4 v. 24.2%) or > 4 cells (47.7 v. 53.4%) did not differ (P > 0.05) between SOF and KSOM on Day 2, but total embryo cleavage ≥ 2 cells was greater (P < 0.05) in KSOM (76.8%) than in SOF (68.5%). However, the percentage of blastocysts developed on Day 8 and 9 was greater (P < 0.05) for zygotes cultured in SOF (22.1 and 25.6%) than for those cultured in KSOM (15.1 and 18.9%). Furthermore, the percentages of hatched blastocysts on Day 8 and 9 were also greater (P < 0.05) for zygotes cultured in SOF (18.8 and 36.2%) than for those cultured in KSOM (4.7 and 12.5%). In addition, expanded blastocysts developed in SOF had higher total mean number of embryonic nuclei than those developed in KSOM (P < 0.05; 128.8 ± 7.5 v. 84.3 ± 8.9, respectively). In conclusion, the use of SOF resulted in significantly greater percentage of blastocysts and hatched blastocysts compared with KSOM. Additionally, expanded blastocysts developed in SOF displayed a higher number of cells.
This study was supported by Convenio Desempeño en Investigacion (2007-DGI-CDA-04), Universidad Catolica de Temuco and DiD-UAcH: S-2009-26.
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Abstract
Accounting for 20-50% of all benign forms, solitary osteochondromae are the most common kind of bone tumour. The long bones of the lower extremity are the most frequently affected; the small bones of the hands and feet, the pelvis, the scapula, and the spine are less usual locations. This paper describes an osteochondroma in a proximal phalanx of the hand of a female aged between 17 and 25 years buried in a Late Roman necropolis from SE Spain. The bone displayed a solitary osteochondroma, which was confirmed by macroscopic and radiographic examination. This is the first palaeopathological example of a solitary sessile osteochondroma of the hand.
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Affiliation(s)
- J Zapata
- Department of Zoology and Physical Anthropology, Faculty of Biology, University of Murcia, 30100 Campus Espinardo, Murcia, Spain.
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12
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Zapata J, Pérez-Sirvent C, Martínez-Sánchez MJ, Tovar P. Diagenesis, not biogenesis: Two late Roman skeletal examples. Sci Total Environ 2006; 369:357-68. [PMID: 16828844 DOI: 10.1016/j.scitotenv.2006.05.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2006] [Revised: 05/19/2006] [Accepted: 05/27/2006] [Indexed: 05/10/2023]
Abstract
Bone element analysis of two Late Roman populations from coastal south-eastern Spain suggests significant diagenesis. Trace element levels, in particular elevated Sr, Pb, Al, Mn, and the Ca/P ratio indicate post-mortem changes in the composition of the bones, preventing use of the data for dietary reconstructions, as well as for the investigation of the different individuals' health conditions, or of links between diet, health and skeletal indicators of growth stress. Such diagenetic biases are more widespread than usually recognized; paleodietary and paleoenvironmental inferences derived from the chemistry of archaeological bones need to be critically assessed.
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Affiliation(s)
- J Zapata
- Area of Physical Anthropology, Department of Zoology and Physical Anthropology, Faculty of Biology, University of Murcia, Campus Espinardo, 30100 Murcia, Spain.
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Ramírez-Moreno J, Casado-Naranjo I, Gómez-Gutiérrez M, García Castañón I, Ortiz Descane C, Zapata J. [Cerebral infarction due to spontaneous dissection of the left common carotid artery]. Neurologia 2001; 16:276-80. [PMID: 11423046] [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: 02/20/2023] Open
Abstract
Spontaneous dissection of the extracranial cervicocephalic arteries occurs most often in the internal carotid artery or vertebral artery. Spontaneous dissection of a common carotid artery is rare, with only nine cases having been reported. A 43-year-old man was hospitalized for sudden onset of motor aphasia and right arm weakness due to spontaneous dissection of a left common carotid artery; no sign of aortic disection was evident on aortogram. The most common causes of dissection of the common carotid artery are the extension of an aortic dissection and the complication in an angiogram with direct puncture; spontaneous dissection being very rare. We review the previous literature on this topic.
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Affiliation(s)
- J Ramírez-Moreno
- Sección de Neurología, Hospital San Pedro de Alcántara, Cáceres.
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Laucella SA, Riarte A, Prado N, Zapata J, Segura EL. alpha 4 Integrins and sialyl Lewis x modulation in chronic Chagas disease: further evidence of persistent immune activation. Scand J Immunol 2001; 53:514-9. [PMID: 11309161 DOI: 10.1046/j.1365-3083.2001.00916.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
We have previously shown that titers of soluble platelet selectin (s-P-selectin) and soluble vascular cell adhesion molecule-1 (s-VCAM-1) were increased in sera of patients with chronic Trypanosoma cruzi infection. In this study, we analyzed the expression of CD49d-integrins, that bind to VCAM-1, and sialyl Lewis x (SLe(x)), which binds selectins, in peripheral blood lymphocytes of 27 patients with Chagas' disease at different levels of disease severity. Patients with a mild form of Chagas' disease showed a lower number of CD49d(+) cells, in comparison with those with severe chronic cardiopathy. Decreased levels of CD49d(+) cells were detected in CD3(-) cell populations. Conversely, SLe(x) expression was found to be decreased in patients with severe Chagas' disease. Levels of soluble platelet endothelial cell adhesion molecule-1 (s-PECAM-1) were significantly increased in the plasma of patients with severe Chagas' disease while unaltered levels of MCP-1 were recorded. These data show that VCAM-1 and P-Selectin ligands are differentially expressed during the chronic phase of the Trypanosoma cruzi infection. These findings also reinforce a role of the P-selectin/SLe(x) adhesion pathway rather than very late antigen-4 (VLA-4)/VCAM-1, in the pathogenesis of Chagas' disease.
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Affiliation(s)
- S A Laucella
- Instituto Nacional de Parasitología Dr Mario Fatala Chabén, Ministerio de Salud y Acción Social, Buenos Aires, Argentina.
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16
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Abstract
The use of active contour models to track the boundaries of anatomic structures in medical images is a technique that has attracted a great number of efforts during the last decade. Segmentation techniques based in deformable active contours were proposed first by Kass et al. Because of the problems appearing using these models, some solutions have been introduced, such as balloon force or Gradient Vector Flow force (GVF), derived from the Gradient Vector Flow vectorial field. Results obtained with these forces in the tracking endocardiac task in echocardiographic sequences were not adequate. We have designed a new external force called hybrid force, which, by combining both forces, joins the main features of each one.
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Affiliation(s)
- P J Sánchez
- Departamento de Informática, Inteligencía Artificial y Electrónica, Universidad de Murcia
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17
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Ye X, Mehlen P, Rabizadeh S, VanArsdale T, Zhang H, Shin H, Wang JJ, Leo E, Zapata J, Hauser CA, Reed JC, Bredesen DE. TRAF family proteins interact with the common neurotrophin receptor and modulate apoptosis induction. J Biol Chem 1999; 274:30202-8. [PMID: 10514511 DOI: 10.1074/jbc.274.42.30202] [Citation(s) in RCA: 146] [Impact Index Per Article: 5.8] [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: 11/06/2022] Open
Abstract
The common neurotrophin receptor, p75(NTR), has been shown to signal in the absence of Trk tyrosine kinase receptors, including induction of neural apoptosis and activation of NF-kappaB. However, the mechanisms by which p75(NTR) initiates these intracellular signal transduction pathways are unknown. Here we report interactions between p75(NTR) and the six members of TRAF (tumor necrosis factor receptor-associated factors) family proteins. The binding of different TRAF proteins to p75(NTR) was mapped to distinct regions in p75(NTR). Furthermore, TRAF4 interacted with dimeric p75(NTR), whereas TRAF2 interacted preferentially with monomeric p75(NTR). TRAF2-p75(NTR), TRAF4-p75(NTR), and TRAF6-p75(NTR) interactions modulated p75(NTR)-induced cell death and NF-kappaB activation with contrasting effects. Coexpression of TRAF2 with p75(NTR) enhanced cell death, whereas coexpression of TRAF6 was cytoprotective. Furthermore, overexpression of TRAF4 abrogated the ability of dimerization to prevent the induction of apoptosis normally mediated by monomeric p75(NTR). TRAF4 also inhibited the NF-kappaB response, whereas TRAF2 and TRAF6 enhanced p75(NTR)-induced NF-kappaB activation. These results demonstrate that TRAF family proteins interact with p75(NTR) and differentially modulate its NF-kappaB activation and cell death induction.
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Affiliation(s)
- X Ye
- The Burnham Institute, La Jolla, California 92037, USA
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18
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Zapata J, Shippee-Rice R. The use of folk healing and healers by six Latinos living in New England: a preliminary study. J Transcult Nurs 1999; 10:136-142. [PMID: 10476165 DOI: 10.1177/1043659] [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: 05/28/2023] Open
Abstract
The purpose of this qualitative study is to describe Latinos' use of folk medicine and the values associated with it in the context of mainstream health care. The research questions focused on the meaning of folk medicine in the Latino culture and how participants made decisions regarding the use of folk medicine or modern biomedicine. Interviews were conducted with six Latinos living in a New England city who had used folk medicine. Three themes were identified: being sick, healers and healing, and faith and believing. The participants in this study valued their cultural folk medicine and folk healers. However, none relied exclusively on folk medicine. All used mainstream health care providers for specific purposes. A major reason for not using mainstream health care providers more frequently was the perceived lack of holistic care and the use of medicines that are not natural.
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19
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Abstract
The purpose of this qualitative study is to describe Latinos' use of folk medicine and the values associated with it in the context of mainstream health care. The research questions focused on the meaning of folk medicine in the Latino culture and how participants made decisions regarding the use of folk medicine or modern biomedicine. Interviews were conducted with six Latinos living in a New England city who had used folk medicine. Three themes were identified: being sick, healers and healing, and faith and believing. The participants in this study valued their cultural folk medicine and folk healers. However, none relied exclusively on folk medicine. All used mainstream health care providers for specific purposes. A major reason for not using mainstream health care providers more frequently was the perceived lack of holistic care and the use of medicines that are not natural.
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20
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Alcalde M, Jiménez G, Díaz P, García-Díaz M, Pascasio JM, Moro R, Zapata J, López-Santamaría A. Solitary ileocolic arteriovenous malformation: spongostan and silk therapeutic embolisation. Postgrad Med J 1997; 73:295-6. [PMID: 9196704 PMCID: PMC2431309 DOI: 10.1136/pgmj.73.859.295] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A debilitated patient with liver cirrhosis and poor haemostasis had a severe lower gastrointestinal haemorrhage. A superior mesenteric arteriogram revealed an early persistent and promiment draining vein in the ileocolic artery. Two fragments of Spongostan and silk were used to embolise the bleeding artery and the haemorhage ceased immediately. No infarction of the embolised area was observed and the bleeding was controlled.
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Affiliation(s)
- M Alcalde
- Department of Gastroenterology, Infanta Cristina University Hospital of Badajox, Spain
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22
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Delgado D, González-Carpio R, Torrado J, Zapata J, Polaina M, Lorenzana L, Cabezudo J. Vena oftálmica superior en fístula carótido-cavernosa espontánea. Valoración mediante Dúplex-Doppler color. Neurocirugia (Astur) 1992. [DOI: 10.1016/s1130-1473(92)70877-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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23
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Molina A, Martinez-Ortiz F, Zapata J, Albaladejo J. Chronopotentiometry with non-linear perturbation functions at the DME with a preceding blank period. ACTA ACUST UNITED AC 1987. [DOI: 10.1016/0022-0728(87)80060-8] [Citation(s) in RCA: 10] [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: 10/17/2022]
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25
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Galvez J, Zapata J, Molina A. Chronopotentiometry with programmed current at an electrode expanding with any power law. J Electroanal Chem (Lausanne) 1987. [DOI: 10.1016/0022-0728(87)85028-3] [Citation(s) in RCA: 4] [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: 11/27/2022]
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26
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Galvez J, Zapata J, Serna C. Pulse polarography: current-potential curves in normal pulse polarography, reverse pulse polarography, differential normal pulse polarography and differential pulse polarography for a slow charge-transfer step. ACTA ACUST UNITED AC 1986. [DOI: 10.1016/0022-0728(86)90220-2] [Citation(s) in RCA: 17] [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: 11/30/2022]
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28
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Ortega Lacuesta V, Jara-Albarrán A, Zapata J, Alvarez Hernández J. [Empty sella turcica associated with Addison's disease and early menopause]. Med Clin (Barc) 1984; 83:547-9. [PMID: 6096648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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29
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Fox JE, Cornette J, Deleuze G, Dyson W, Giersak C, Niu P, Zapata J, McChesney J. The formation, isolation, and biological activity of a cytokinin 7-glucoside. Plant Physiol 1973; 52:627-32. [PMID: 16658619 PMCID: PMC366560 DOI: 10.1104/pp.52.6.627] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The cytokinin, 6-benzylaminopurine, is converted to its 7-glucoside in intact seedlings, organ slices, and tissue cultures from several plants. The ribonucleoside and 5'-ribonucleotide appear transiently, and the general metabolic sequence seems to be nearly identical in the four plant species thus far studied. The glucoside persists for long periods in plant tissues, while all other forms of the cytokinin are rapidly metabolized and disappear within a few hours. A procedure for the isolation in pure form of the glucoside is described.
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Affiliation(s)
- J E Fox
- Departments of Biochemistry, Botany, and Medicinal Chemistry, The University of Kansas, Lawrence, Kansas 66044
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