Usefulness of manufactured tomato extracts in the diagnosis of tomato sensitization: Comparison with the prick-prick method

<p>Abstract</p> <p>Background</p> <p>Commercial available skin prick test with fruits can be negative in sensitized or allergic patients due to a reduction in biological activity during the manufacturing process. Prick-prick tests with fresh foods are often preferred, but they are a non-standardized procedure. The usefulness of freeze-dried extracts of Canary Islands tomatoes, comparing the wheal sizes induced by prick test with the prick-prick method in the diagnosis of tomato sensitization has been analyzed.</p> <p>The objective of the study was to assess the potential diagnostic of freeze-dried extracts of Canary Islands tomatoes, comparing the wheal sizes induced by prick test with the prick-prick method.</p> <p>Methods</p> <p>Two groups of patients were analyzed: Group I: 26 individuals reporting clinical symptoms induced by tomato contact or ingestion. Group II: 71 control individuals with no symptoms induced by tomato: 12 of them were previously skin prick test positive to a tomato extract, 39 were atopic and 20 were non-atopic. All individuals underwent prick-prick with fresh ripe peel Canary tomatoes and skin prick tested with freeze-dried peel and pulp extracts obtained from peel and pulp of Canary tomatoes at 10 mg/ml. Wheal sizes and prick test positivity (≥ 7 mm²) were compared between groups.</p> <p>Results</p> <p>In group I, 21 (81%) out of 26 patients were prick-prick positive. Twenty patients (77%) had positive skin prick test to peel extracts and 12 (46%) to pulp extracts. Prick-prick induced a mean wheal size of 43.81 ± 40.19 mm²compared with 44.25 ± 36.68 mm²induced by the peel extract (Not significant), and 17.79 ± 9.39 mm²induced by the pulp extract (p < 0.01).</p> <p>In group II, 13 (18%) out of 71 control patients were prick-prick positive. Twelve patients (all of them previously positive to peel extract) had positive skin prick test to peel and 3 to pulp. Prick-prick induced a mean wheal size of 28.88 ± 13.12 mm²compared with 33.17 ± 17.55 mm²induced by peel extract (Not significant), and 13.33 ± 4.80 mm²induced by pulp extract (p < 0.05 with peel extract and prick-prick).</p> <p>Conclusion</p> <p>Canary peel tomato extract seems to be as efficient as prick-prick tests with ripe tomatoes to diagnose patients sensitized to tomato. The wheal sizes induced by prick-prick and peel extracts were very similar and showed a high correlation coefficient.</p

Magnetic ionic plastic crystal: choline[FeCl4]

A novel organic ionic plastic crystal (OIPC) based on a quaternary ammonium cation and a tetrachloroferrate anion has been synthesized with the intention of combining the properties of the ionic plastic crystal and the magnetism originating from the iron incorporated in the anion. The thermal analysis of the obtained OIPC showed a solid?solid phase transition below room temperature and a high melting point above 220 1C, indicating their plastic crystalline behaviour over a wide temperature range, as well as thermal stability up to approximately 200 1C. The magnetization measurements show the presence of three-dimensional antiferromagnetic ordering below 4 K. The results from electrochemical characterization display a solid-state ionic conduction sufficiently high and stable (between 10 2.7 and 10 3.6 S cm 1 from 20 to 180 1C) for electrochemical applications

Saber etnobotánico, riqueza y valor de uso de plantas medicinales en Monterrey, Villa Corzo, Chiapas (México)

Se registraron 73 especies de plantas medicinales naturalizadas o nativas de la comunidad Monterrey, municipio de Villa Corzo, Chiapas, México. Para el levantamiento de la información, se aplicó una entrevista semiestructurada a una muestra de 119 personas, categorizadas por edad y sexo. Se determinó la familia botánica de cada una de las plantas identificadas, así como el índice de riqueza de conocimiento, el valor de uso y la frecuencia de uso. Dentro de las especies más usadas se encuentran la Verbena (Verbena officinalis L.), la Manzanilla (Chamaemelum nobile L.) y la Albahaca (Ocimum basilicum L.), la Sábila (Aloe barbadensis Miller) y la Ruda (Ruta chalepensis L.), que presentan el mayor índice de riqueza de conocimiento, así como de valor de uso. Las familias más representadas por especies de uso botánico fueron Asteraceae con diez especies, Fabaceae, Lamiaceae, Poaceae con cuatro y Annonaceae, Apiaceae, Lauraceae y Rubiaceae, con tres especies

Maíces locales; una contextualización de identidad tradicional

This article rises at a first glance on the how important is to agree on an integrative concept for the diversity richness of the maize species and currently grown and preserved in different agroecological and cultural contexts of Mexico, and arises as a conceptual necessity for research project about maize and its multiple purpose uses. The article is proposed due to the current confusion between some concepts and definitions usually read and heard in academic vocabulary regarding the maize. This proposal is made from a literature review of academic documents; with an ethnoagronomic and holistic approach of conceptual integration on the use, management and conservation of maize. Classic and recent academic information was used to decipher and point out the trends in the nomenclature (concepts and definitions) used to name the types of maize currently grown. In conclusion, it is proposed that the maize grown mainly in rural communities could be called "local maize", especially those that are used from the integration of cultural, genetic and phenotypic components or that originate as a result of continuous use, management and conservation in those niches where they can be found.En este artículo se plantea la importancia de acordar un concepto integrador para referirse a los maíces cultivados y conservados en diferentes contextos agroecológicos y culturales, y surge como una necesidad conceptual de un proyecto de investigación sobre maíces y sus usos múltiples. Es decir, el artículo se propone debido a la confusión actual que existe entre algunos conceptos y definiciones que normalmente se leen y escuchan en el lenguaje académico respecto del maíz. Esta propuesta se hace a partir de una revisión de documentos académicos; con un enfoque etnoagronómico y holístico de integración conceptual en el uso, manejo y conservación de los maíces. Se recurrió a información académica clásica y reciente para descifrar y puntualizar las tendencias en la nomenclatura (conceptos y definiciones) que se le asigna a los tipos de maíces cultivados. A manera de conclusión se plantea que los maíces que han sido seleccionados y conservados por los propios productores, se les llame "maíces locales"; principalmente aquellos que se utilizan desde la integración de los componentes culturales, genéticos y fenotípicos, y que se originan como resultado de un uso, manejo y conservación continuos en aquellos nichos donde se encuentran presentes

Local maize : a contextualization of traditional indentity

En este artículo se plantea la importancia de acordar un concepto integrador para referirse a los maíces cultivados y conservados en diferentes contextos agroecológicos y culturales, y surge como una necesidad conceptual de un proyecto de investigación sobre maíces y sus usos múltiples. Es decir, el artículo se propone debido a la confusión actual que existe entre algunos conceptos y definiciones que normalmente se leen y escuchan en el lenguaje académico respecto del maíz. Esta propuesta se hace a partir de una revisión de documentos académicos; con un enfoque etnoagronómico y holístico de integración conceptual en el uso, manejo y conservación de los maíces. Se recurrió a información académica clásica y reciente para descifrar y puntualizar las tendencias en la nomenclatura (conceptos y definiciones) que se le asigna a los tipos de maíces cultivados. A manera de conclusión se plantea que los maíces que han sido seleccionados y conservados por los propios productores, se les llame &quot;maíces locales&quot;; principalmente aquellos que se utilizan desde la integración de los componentes culturales, genéticos y fenotípicos, y que se originan como resultado de un uso, manejo y conservación continuos en aquellos nichos donde se encuentran presentes.This article rises at a first glance on the how important is to agree on an integrative concept for the diversity richness of the maize species and currently grown and preserved in different agroecological and cultural contexts of Mexico, and arises as a conceptual necessity for research project about maize and its multiple purpose uses. The article is proposed due to the current confusion between some concepts and definitions usually read and heard in academic vocabulary regarding the maize. This proposal is made from a literature review of academic documents; with an ethnoagronomic and holistic approach of conceptual integration on the use, management and conservation of maize. Classic and recent academic information was used to decipher and point out the trends in the nomenclature (concepts and definitions) used to name the types of maize currently grown. In conclusion, it is proposed that the maize grown mainly in rural communities could be called &quot;local maize&quot;, especially those that are used from the integration of cultural, genetic and phenotypic components or that originate as a result of continuous use, management and conservation in those niches where they can be found.Fil: Guevara-Hernández, Francisco. Universidad Autónoma de Chiapas (México). Facultad de AgronomíaFil: Hernández-Ramos, Manuel Antonio. Universidad de Ciencias y Artes de Chiapas (México). Facultad de IngenieríaFil: Basterrechea-Bermejo, José Luis. Universidad Autónoma de Chiapas (México). Facultad de AgronomíaFil: Pinto-Ruiz, René. Universidad Autónoma de Chiapas (México). Facultad de AgronomíaFil: Venegas-Venegas, José Apolonio. Universidad Autónoma de Chiapas (México). Facultad de AgronomíaFil: Rodríguez-Larramendi, Luis A.. Universidad de Ciencias y Artes de Chiapas (México). Facultad de IngenieríaFil: Cadena-Iñiguez, Pedro. Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (México

Towards the design of contrast enhanced agents systematic Ga3 doping on magnetite nanoparticles

The main objective of the preparation of the Fe3 amp; 8722;xGaxO4 0.14 amp; 8804; x amp; 8804; 1.35 system was to further the knowledge of the magnetic response of Ga3 doped magnetite for application as MRI contrast agents. With this purpose, monodisperse nanoparticles between 7 and 10 nm with different amounts of gallium were prepared from an optimized protocol based on thermal decomposition of metallo organic precursors. Thorough characterization of the sample was conducted in order to understand the influence of gallium doping on the structural, morphological and magnetic properties of the Fe3 amp; 8722;xGaxO4 system. X ray diffraction and X ray absorption near edge structure measurements have proved the progressive incorporation of Ga in the spinel structure, with different occupations in both tetrahedral and octahedral sites. Magnetization measurements as a function of field temperature have shown a clear dependence of magnetic saturation on the gallium content, reaching an Ms value of 110 Am2 kg amp; 8722;1 at 5 K for x 0.14 significantly higher than bulk magnetite and considerably decreasing for amounts above x 0.57 of gallium. For this reason, nanoparticles with moderate Ga quantities were water transferred by coating them with the amphiphilic polymer PMAO to further analyse their biomedical potential. Cytotoxicity assays have demonstrated that Fe3 amp; 8722;xGaxO4 PMAO formulations with x amp; 8804; 0.57, which are the ones with better magnetic response, are not toxic for cells. Finally, the effect of gallium doping on relaxivities has been analysed by measuring longitudinal T1 amp; 8722;1 and transverse T1 amp; 8722;1 proton relaxation rates at 1.4 T revealing that nanoparticles with x 0.14 Ga3 content present remarkable T2 contrast and the nanoparticles with x 0.26 have great potential to act as dual T1 T2 contrast agent

Revista de Vertebrados de la Estación Biológica de Doñana

La reproducción de Hyla meridionalis en el suroeste de EspañaAlimentación y relaciones tróficas entre larvas de Triturus marmoratus, T. alpestris y T. helveticus (Amphibia: CaudataOrganization of behaviour in isolated lizards (Gallotia galloti galloti) as revealed by multivariate analyseComposición y estructura de las comunidades de aves a lo largo de un gradiente altitudinal en tres medios arbustivos del macizo de Ayllón(Sistema Central)La comunidad de aves de un acebuchar del sur de España durante el periodo invernal y de cria.Alimentación del buho chico (Asio otus) en la isla de Tenerife y análisis comparativo con la dieta de Tyto albaAlimentación del zorzal charlo (Turdus viscivoros) en la sierra de Cazorla, SE de España.La migración en España del verderón común (Carduelis chloris, L.) según los resultados de anillamientoIdentificación de los principales quirópteros ibéricos a partir de sus dientes aislados. Valor sistemático de los caracteres morfológicos y métricos dentariosRitmo de actividad en Gazella dorcasSobre la sistemática y biología de Eliomys quercinus en la Cordillera Cantábrica.Primeras citas de Barbus microcephalus Almaça, 1967 (Ostariophysi: Cyprinidae) en EspañaSobre la presencia de Lampetra planeri BLOCH, 1784 en España.Sobre el status taxonómico del género Valencia Myers, 1928 en el suroeste de IberiaNuevas localidades de Chondrostroma polypis Steindachner, 1865 (Ostariophysi, Cyprinidae) en España.Sobre la distribución Gobio gobio (L., 1758)(OSTAOPHYSI, CIPRINIDAE) en EspañaNotas sobre la alimentación de larvas de anfibios: 2. Salamandra salamandra de CazorlaNuevos datos sobre la permanencia de caracteres larvarios en individuos adultos de una población de tritón pirenaico (Euproctus asper) en el valle de AránLa variación del diseño natural como método de reconocimiento individual en Triturus boscaiPresencia de Triturus boscai en la provincia de Córdoba.Datos sobre la alimentación de Athene cunicularia en la Reserva de fauna altoandina de Ulla-Ulla, Bolivia.Falco peregrinus cassini en BoliviaAlgunos datos sobre quirópteros de Galicia.Notas sobre la alimentación de la nutria (Lutra lutra) en el embalse de Matavacas, HuelvaPeer reviewe

Unusual magnetic properties in Pr1-xSrxFe0.8Ni0.2O3-d; (0.3=< x)

Pr1−xSrxFe0.8Ni0.2O3−delta (x=0.1, 0.2, and 0.3) polycrystalline phases were prepared by combustion synthesis. Their magnetic properties and Mössbauer effect have been examined in the range 5–300 K. Mössbauer spectroscopy shows the existence of charge disproportionation in several of the samples at low temperatures. Meanwhile, the samples present multiple features pointing out a frustrated magnetic order, with competing ferro- and antiferromagnetic interactions. Additionally, exchange bias (EB) phenomena have been observed. Hence, when the samples are cooled in a static magnetic field down to temperatures below 50 K, the hysteresis loops shift in the opposite direction to the applied biasing field, with shifts up to 10 kOe and more, and a small vertical shift of the loops also appears. This behavior seems linked to spin disorder and to the appearance of ferromagnetic (FM) ordered regions at low temperatures when cooling with a high applied field. The growth of these FM regions is likely due to the aligning role of an important cooling magnetic field over Ni-Fe and Fe5+-Fe3+ FM interactions. The higher FM contributions and therefore EB values found in the samples presenting charge disproportionation are related to the formation of FM regions in Fe5+-rich areas