Search results for "amer"
showing 10 items of 2105 documents
Experimentación e innovación en el cortometraje documental latinoamericano moderno: las experiencias de Brasil, Cuba y México/ Experimentation and in…
2017
Resumen: El presente artículo aborda el cine moderno latinoamericano a partir de la articulación del cortometraje y el documental en tanto agentes fundamentales en el asentamiento de este fenómeno en la región. Para ello hemos escogido tres países –México, Brasil y Cuba– que han atravesado realidades disímiles en cuanto a la conformación de una tradición cinematográfica industrial. De este modo, corroboramos en un primer apartado el rol del cortometraje documental en las tres cinematografías contempladas a través del desarrollo del mismo a lo largo de la historia para desembocar en la renovación expresiva y semántica de los años cincuenta y sesenta. El film de corta duración se ha convertid…
La mujer católica y la regeneración de España: género, nación y modernidad en Fernán Caballero
2012
El autor propone una lectura de la obra de Cecilia Bohl de Faber (Fernan Caballero) en relacion con su contexto politico y literario. Su obra debe vincularse con el mito romantico de Espana, que excluia al pais de la «modernidad» europea y que cultivaba la idea de la supuesta inmoralidad de las espanolas. En respuesta a este mito, Fernan Caballero ofrecio la imagen de un pueblo andaluz franco, sencillo y amante del orden, y la de una mujer hispana virtuosa y profundamente religiosa. Su propuesta coincidia con la del liberalismo moderado, que acogio con aplauso sus obras en los anos posteriores a las revoluciones de 1848. Con el tiempo, la creciente evidencia de sus tendencias antiliberales …
Parenting culture(s): Ideal-parent beliefs across 37 countries
2022
What is it to be “an ideal parent”? Does the answer differ across countries and social classes? To answer these questions in a way that minimizes bias and ethnocentrism, we used open-ended questions to explore ideal-parent beliefs among 8,357 mothers and 3,517 fathers from 37 countries. Leximancer Semantic Network Analysis was utilized to first determine parenting culture zones (i.e., countries with shared ideal-parent beliefs) and then extract the predominant themes and concepts in each culture zone. The results yielded specific types of ideal-parent beliefs in five parenting culture zones: being “responsible and children/family-focused” for Asian parents, being “responsible and proper de…
Differences between Latin American and Spanish men in a batterer intervention programme: proximal and final outcomes
2020
El objetivo de este estudio es comprobar si existen diferencias en la efectividad de un programa de intervención para hombres condenados por violencia de género, en función del lugar de procedencia de los participantes (i.e., españoles e inmigrantes latinoamericanos). Se utilizó una muestra de 425 hombres penados por violencia de género que participaban en un programa estándar de intervención en España. Se consideraron como variables finales la reincidencia oficial y el riesgo de reincidencia y como variables proximales la intención de cambio, la asunción de responsabilidad, la adherencia al tratamiento y el compromiso con la intervención. No se encontraron diferencias entre participantes e…
"Cy Twombly: Intérprete de dos mundos" [Un artista entre Estados Unidos y Europa, entre lo clásico y lo contemporáneo]
2017
Esta tesis “Cy Twombly: Intérprete de dos mundos” [Un artista entre Estados Unidos y Europa, entre lo clásico y lo contemporáneo] pretende dar a conocer al artista norteamericano Cy Twombly (1928-2011) en nuestro país y destacar la importancia que tiene dentro del panorama artístico como figura clave en un momento de efervescencia —artística y creativa— americana en el que a diferencia de sus coetáneos prefirió emigrar a Europa, concretamente a Italia. Mientras todos se trasladaban a la nueva capital del arte, New York, incluidos galeristas y artistas europeos, él se instaló en Roma donde su formación como expresionista abstracto convivió con la tradición artística europea. Una combinación …
Presentation of an Immunodominant Immediate-Early CD8+ T Cell Epitope Resists Human Cytomegalovirus Immunoevasion.
2013
Control of human cytomegalovirus (HCMV) depends on CD8+ T cell responses that are shaped by an individual's repertoire of MHC molecules. MHC class I presentation is modulated by a set of HCMV-encoded proteins. Here we show that HCMV immunoevasins differentially impair T cell recognition of epitopes from the same viral antigen, immediate-early 1 (IE-1), that are presented by different MHC class I allotypes. In the presence of immunoevasins, HLA-A- and HLA-B-restricted T cell clones were ineffective, but HLA-C*0702-restricted T cell clones recognized and killed infected cells. Resistance of HLA-C*0702 to viral immunoevasins US2 and US11 was mediated by the alpha3 domain and C-terminal region …
Detailed characterization of human Mycobacterium tuberculosis specific HLA-E restricted CD8+TÂ cells
2018
HLA-E presented antigens are interesting targets for vaccination given HLA-Esâ essentially monomorphic nature. We have shown previously that Mycobacterium tuberculosis (Mtb) peptides are presented by HLA-E to CD8+effector TÂ cells, but the precise phenotype and functional capacity of these cells remains poorly characterized. We have developed and utilized in this study a new protocol combining HLA-E tetramer with intracellular staining for cytokines, transcription factors and cytotoxic molecules to characterize these cells in depth. We confirm in this study the significantly increased ex vivo frequency of Mtb-peptide/HLA-E-TM+CD8+TÂ cells in the circulation of patients with active tubercu…
The use of HLA-A*0201-transfected K562 as standard antigen-presenting cells for CD8+ T lymphocytes in IFN-γ ELISPOT assays
2001
ELISPOT assays are increasingly used for a direct detection and quantification of single antigen-specific T cells in freshly isolated peripheral blood mononuclear cells (PBMC). They are particularly attractive for the monitoring of specific T lymphocyte responses in clinical trials assessing antigen-specific immunizations in patients with cancer or chronic viral infections. However, one major limitation for the broad clinical implementation of ELISPOT assays is the lack of an inexhaustible source of suitable HLA-matched antigen-presenting cells (APC). Currently available allogeneic or xenogeneic APC (such as the human lymphoid hybrid T2 or HLA-transfected insect cells) can either lead to st…
T-T cell interactions during in vitro cytotoxic T lymphocyte responses. III. Antigen-specific T helper cells release nonspecific mediator(s) able to …
1980
T helper cell induction and the specificity of T cell-mediated help as generated during alloreactive and H-2-restricted, virus- or hapten-specific cytotoxic T lymphocyte (CTL) responses have been compared. With the use of a double-chamber culture system, it was possible to dissect and separately analyze the induction phase of T helper cells from the T helper cell effector function. The data obtained revealed that during alloreactive as well as H-2-restricted T cell responses, antigen-specific T helper cells are induced. Upon specific restimulation of T helper cells, helper cell function is mediated across a cell-impermeable membrane via soluble products in an apparently nonspecific and nonr…
Precursor frequency can compensate for lower TCR expression in T cell competition during priming in vivo.
2006
The factors controlling clonal dominance of cytotoxic T lymphocyte (CTL) responses are currently not well understood. To study the functional impact of the strength of the interaction of a T cell with an antigen-presenting cell in this context, we established a new mouse model comprised of two T cell receptor (TCR)-transgenic strains expressing the identical TCR in differing amounts, hence providing two CTL clones with different avidities but identical specificity and affinity. Utilizing this new model, we show that upon antigen challenge higher-avidity CTL expand at the expense of moderate-avidity CTL in vivo if present in equal numbers. Beyond this, moderate-avidity T cells can also contr…