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HLA-C genotype and TCR vβ expression analysis in Mexican patients with Psoriasis

MARTHA LETICIA SANTOS MARTINEZ MA. FABIOLA LEON GALVAN ERIKA NAHOMY MARINO MARMOLEJO ANTONIO DE LEON RODRIGUEZ ANA PAULINA BARBA DE LA ROSA BENJAMIN MONCADA GONZALEZ (2011)

"Genetic background and T-cell expansion have been associated as the most important factors for psoriasis susceptibility in the Caucasian population. This study was performed to identify the T cell receptor Vβ repertoire and HLA-Cw genotype in two Mexican groups with severe chronic plaque-type psoriasis. HLA-C typing was performed to detect the allele pattern associated with the disease by sequence-specific primer-polymerase chain reaction. In parallel, RT-PCR and Western blot were used for the identification of the TCR Vβ repertoire. We found a wide variety of HLA-C alleles displayed with a preference to HLA-Cw *07 as the most representative allele in the group of patients. TCR Vβ-2 and Vβ-7 clone-type frequencies were statistically significant (p of 0.0280) when compared to other TCR Vβ expressed in the two groups. We found notable differences both in the HLA-C genotype and TCR Vβ repertoire in the groups of patients studied. Since Mexican individuals are genetically different from the Caucasian population, we suggest that due to these differences the susceptibility to disease and activation of T-cells for a proper immune response may be affected."

Article

Psoriasis TCR vβ HLA-Cw Mexican patients BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA BIOLOGÍA MOLECULAR

The North American monsoon

David Adams Andrew Comrie (1997)

The North American monsoon is an important feature of the atmospheric circulation over the continent, with a research literature that dates back almost 100 years. The authors review the wide range of past and current research dealing with the meteorological and climatological aspects of the North American monsoon, highlighting historical development and major research themes. The domain of the North American monsoon is large, extending over much of the western United States from its region of greatest influence in northwestern Mexico. Regarding the debate over moisture source regions and water vapor advection into southwestern North America, there is general agreement that the bulk of monsoon moisture is advected at low levels from the eastern tropical Pacific Ocean and the Gulf of California, while the Gulf of Mexico may contribute some upper-level moisture (although mixing occurs over the Sierra Madre Occidental). Surges of low-level moisture from the Gulf of California are a significant part of intraseasonal monsoon variability, and they are associated with the configuration of upper-level midlatitude troughs and tropical easterly waves at the synoptic scale, as well as the presence of low-level jets, a thermal low, and associated dynamics (including the important effects of local topography) at the mesoscale. Seasonally, the gulf surges and the latitudinal position of the midtropospheric subtropical ridge over southwestern North America appear to be responsible for much spatial and temporal variability in precipitation. Interannual variability of the North American monsoon system is high, but it is not strongly linked to El Nino or other common sources of interannual circulation variability. Recent mesoscale field measurements gathered during the South-West Area Monsoon Project have highlighted the complex nature of the monsoon-related severe storm environment and associated difficulties in modeling and forecasting.

Article

CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA southwestern united-states central arizona convection maritime tropical air summer monsoon southwestern united-states mexican monsoon area monsoon precipitation patterns gulf USA CIENCIAS DE LA ATMÓSFERA METEOROLOGÍA

Reconversión de cultivos como resultado de la presencia de Huanglongbing en Colima, México

Productive reconversion as a result of Huanglongbing presence in Colima, México

RACIEL HERNANDEZ HERNANDEZ Guadalupe Rebeca Granados Ramírez GUSTAVO MORA AGUILERA RAUL AGUIRRE GOMEZ IMELDA LEON GARCIA (2019)

El estado de Colima es productor importante de limón, las afectaciones por efecto del Huanglonbing (HLB) han ocasionado pérdidas en forma progresiva. Hasta el momento no se conoce cura y los productores han decidido realizar cambios en la dinámica de cultivos. El objetivo de este trabajo fue cuantificar los cambios, mediante análisis espacial (PR) y herramientas del sistema de información geográfica (SIG); se realizaron clasificaciones supervisadas de imágenes Landsat 7 y Landsat 8, comprobando un progresivo aumento en la sustitución de cultivos en los últimos cinco años. Hasta el momento se han sustituido alrededor de 5000 ha de cítricos, lo que ha significado una reducción de 84 721.88 t en el volumen de producción del limón mexicano y una pérdida de 302 636 729 pesos aproximadamente.

Colima state is one of the most important leading producers of lemon, and it has been affected by Huanglonbing (HLB); the damage has spread and caused a progressive production loss in the lemon production chain. So far, there is no cure and farmers have decided to make changes in the crops’ dynamic. The objective of the present work was to quantify the changes in the planted area through spatial analysis (PR) and geographic information system (SIG) tools. Supervised classifications ofLandsat7 andLandsat8 images were carried out. It was proved that lemon crop was substituted progressively by other crops during the last five years. Until now, 5000 ha of citrus have been substituted. This has implied a reduction of 84 721.88 t of Mexican lemon production and a loss of 302 636 729 Mexican pesos

Article

CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA Citrus aurantifolia (Christm.) Swing Citricultura Limón mexicano HLB Clasificación supervisada Landsa Citrus aurantifolia (Christm.)Swing Citriculture Mexican lemon HLB Supervised classification Landsa

The strategic role of mexican labor under NAFTA: Critical perspectives on current economic integration

RAUL DELGADO WISE JAMES MARTIN CYPHER (2007)

This article aims to reveal the precise meaning of

Mexico’s export platform by focusing on maquiladoras

and the disguised maquila industry. In both sectors,

imported components account for 75 to 90 percent of

export value. As a result, benefits for the Mexican economy

are basically restricted to wages, that is, the value

of the labor incorporated into the exports. The authors

argue that what is actually taking place is the disembodied

exportation of labor or, alternatively, that the workforce

is being exported without requiring Mexican

workers to leave the country. The authors thus demystify

the purported orientation of Mexican exports toward

high-value-added manufactured goods and reveal the

regressive movement of the export platform.

Producción Científica de la Universidad Autónoma de Zacatecas UAZ

Article

CIENCIAS SOCIALES NAFTA Maquiladora industry Disguised maquila Export-led industrialization Transnational corporations Mexican conglomerates Tratado de Libre Comercio Corporaciones transnacionales Industria maquiladora

The Corpus DIMEx100: transcription and evaluation

LUIS ALBERTO PINEDA CORTES HAYDE CASTELLANOS VARGAS JANET JUAREZ ESCOBAR Joaquim Llisterri LUIS VILLASEÑOR PINEDA (2010)

In this paper the transcription and evaluation of the corpus DIMEx100 for Mexican Spanish is presented. First we describe the corpus and explain the linguistic and computational motivation for its design and collection process; then, the phonetic antecedents and the alphabet adopted for the transcription task are presented; the corpus has been transcribed at three different granularity levels, which are also specified in detail. The corpus statistics for each transcription level are also presented. A set of phonetic rules describing phonetic context observed empirically in spontaneous conversation is also validated with the transcription. The corpus has been used for the construction of acoustic models and a phonetic dictionary for the construction of a speech recognition system. Initial performance results suggest that the data can be used to train good quality acoustic models.

Article

Phonetic corpus Phonetic transcription Transcription granularity Mexican Spanish Acoustic models CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA MATEMÁTICAS CIENCIA DE LOS ORDENADORES CIENCIA DE LOS ORDENADORES

Life on the beach for a sand crab (Emerita rathbunae) (Decapoda, Hippidae): parasite-inducided mortality of females in populations of the Pacific sand crab caused by Microphallus nicolli (Microphallidae)

Sergio García Ibáñez Juan Violante González Scott Monks Maria Guadalupe Quiterio Rendon Edvino Larumbe Moran Agustin Aucencio Rojas Herrera (2016)

Parasites, by definition, can affect mortality of their host, making parasitism an important biotic determinant of animal population dynamics and community structure. Reduction in the number of larger, reproductive age females in populations of the Pacific sand crab, Emerita rathbunae (Decapoda, Hippidae), was observed in studies of the helminth community of this host. The aim of this study was to determine if high abundance of the metacercaria of the trematode, Microphallus nicolli (Microphallidae), causes mortality in this host. Females of E. rathbunae were collected from four sandy beaches in Guerrero State, Mexico, and helminths were collected from each crab. An analysis of variance (Anova) was applied to these data in order to identify differences in abundance between sizes of crabs, and an analysis of covariance (Ancova) was applied to identify differences in the abundance of metacercariae between locations

Article

helminth parasite parasite-mediated mortality of hosts parasite population parameters mexican coast BIOLOGÍA Y QUÍMICA QUÍMICA

Smilax aristolochiifolia root extract and its compounds chlorogenic acidand astilbin inhibit the activity of alpha-amylase and alpha-glucosidase enzymes

VIRIDIANA CANDELARIA PEREZ NAJERA Janet Alejandra Gutiérrez Uribe MARILENA ANTUNES RICARDO SERGIO NEMORIO HIDALGO FIGUEROA CARMEN LIZETTE DEL TORO SANCHEZ Luis Antonio Salazar Olivo EUGENIA DEL CARMEN LUGO CERVANTES (2018)

"Regulating activities of -amylase and -glucosidase through the use of specific inhibitors is a main strategy for controlling type 2 diabetes. Smilax aristolochiifolia root decoctions are traditionally used in Mexico as hypoglycemic and for weight loss, but the active principles and mechanisms underlying such putative metabolic effects are yet unknown. Here, we isolated the major bioactive compounds from a hydroethanolic extract of S. aristolochiifolia root by fast centrifugal partition chromatography and evaluated their effects against pancreatic -amylase and yeast -glucosidase. A chlorogenic acid-rich fraction (CAF) inhibited -amylase activity with an IC50 value of 59.28 μg/mL in an uncompetitive manner and -glucosidase activity with an IC50value of 9.27 μg/mL in a noncompetitive mode. Also, an astilbin-rich fraction (ABF) inhibited -glucosidase activity with an IC50 value of 12.30 μg/mL, in a noncompetitive manner. CAF inhibition -amylase was as active as acarbose while both CAF and ABF were 50-fold more potent inhibitors of -glucosidase than acarbose. The molecular docking results of chlorogenic acid and astilbin with -amylase and -glucosidase enzymes correlated with the inhibition mechanisms suggested by enzymatic assays. Our results prove that S. aristolochiifolia roots contain chlorogenic acid and astilbin, which inhibit carbohydrates-hydrolyzing enzymes, suggesting a new mechanism for the hypoglycemic effect reported for this plant."

Article

China L Mexican plants Flavonoids Leaves Derivates Mechanism Insulin Glabra MEDICINA Y CIENCIAS DE LA SALUD MEDICINA Y CIENCIAS DE LA SALUD

Design, measurement and analysis of a knowledge management model in the context of a Mexican University

GIBRAN RIVERA GONZALEZ (2016)

"The paper aims to design and apply a Knowledge Management KM, model within the context of a Higher Education HE, institution in Mexico. The model is composed of six enablers: leadership, culture, structure, human resources, information technologies and measurement, which facilitate the processes of knowledge creation, storage, transfer and application. A 53 question survey applied to thirty six people allowed to evaluate the degree of development and implementation of knowledge enablers and processes. Objectivity, reliability and overall model fit were assessed.The application of the Model serves to highlight the core role that cultural, human and structural aspects play in Knowledge Management processes. Whereas Information Technologies are the least influential to Knowledge Management processes. This paper was limited to examine the perceptions of the Board of Directors of a single university. It is yet to be tested in other institutions. Moreover, the resulting model can be used as an assessment tool in Higher Education Institutions to identify the key elements during a KM initiative as well as to define actions to obtain the greatest benefits from these initiatives."

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Article

CIENCIAS SOCIALES Knowledge management Mexican university Culture Information technologies

Manual de literatura mexicana como fuente de percepción

YANIRA SORIANO DOMINGUEZ (2014)

208 páginas. Maestría en Literatura Mexicana Contemporánea.

Herramienta y material de apoyo para el curso de literatura de sexto de preparatoria. Se analizan textos a través de una serie de ejercicios en la que se recurren a distintos enfoques analíticos para incrementar la capacidad crítica del estudiante.

Master thesis

Mexican literature. Literatura mexicana -- Manuales. PQ7100 HUMANIDADES Y CIENCIAS DE LA CONDUCTA CIENCIAS DE LAS ARTES Y LAS LETRAS TEORÍA, ANÁLISIS Y CRÍTICA LITERARIAS ANÁLISIS LITERARIO

Tony Sandoval, una estética de la melancolía

Nadia Vázquez Díaz (2019)

163 páginas. Maestría en Literatura Mexicana Contemporánea.

Esta tesis recibió financiamiento del Padrón Nacional de Posgrados de Calidad del CONACYT.

He elegido estudiar la obra de un autor mexicano con una carrera sólida como ilustrador en el extranjero, misma que le ha permitido publicar proyectos personales con la libertad de mostrar un estilo y temáticas propias. Su narrativa gráfica sumerge al lector en esa diégesis entre el horror y la nostalgia, la sensualidad y la violencia, la realidad y la ficción. Ilustrador narrador gráfico, Manuel Antonio Sandoval Arballo mejor conocido como Tony Sandoval, es oriundo de Ciudad Obregón, Sonora (1973), En esta investigación, elegí trabajar con sus novelas de corte fantástico publicadas en español, en las cuales el autor realizó tanto el guion como la ilustración Por consiguiente, propongo el análisis de cuatro de sus obras: El cadáver y el sofá, Nocturno, Watersnakes y Mil tormentas; las cuales guardan entre sí diversas similitudes; se trata de novelas de formación en las que los protagonistas son personajes tristes y angustiados, quienes ante un ambiente que se les muestra hostil, van buscando algo que no tienen del todo claro, han sufrido importantes pérdidas y viven en pueblos tranquilos donde parece que nada ocurrirá. La configuración de los ambientes y los personajes, sumado a las historias relatadas sumerge al lector en una diégesis melancólica, por lo que mi propósito es extraer la esencia de su estética con el objetivo de mostrar cómo Tony Sandoval, ha creado un estilo que los lectores pueden relacionar fácilmente con él.

Master thesis

Melancholy in literature. Depression, Mental, in literature. Authors, Mexican. Autores mexicanos. Obras ilustradas. PN56.M4 HUMANIDADES Y CIENCIAS DE LA CONDUCTA CIENCIAS DE LAS ARTES Y LAS LETRAS TEORÍA, ANÁLISIS Y CRÍTICA LITERARIAS