996 resultados para Jorge Abelardo Ramos


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La importancia del marxismo en el pensamiento latinoamericano ha sido señalada en reiteradas oportunidades. Su capacidad para generar diversos proyectos políticos y culturales fue una característica central de dicha tradición, desplegada a través de distintos agentes e instituciones desde la llegada de los escritos de Marx y Engels a América Latina a fines del siglo XIX. Sin embargo, buena parte de esa historia todavía es parcial, anclada en perspectivas nacionales y poco atenta al estudio de sus formas materiales, esto es, a aquellos aspectos a través de los cuales el discurso marxista logró conformar una materialidad específica, tanto para la elaboración teórica como la acción de militantes, obreros, estudiantes e intelectuales. El trabajo tiene como objetivo proponer una exploración del marxismo latinoamericano desde la perspectiva de la reconstrucción de su mundo impreso, a partir de delinear una serie de problemas, temas y reflexiones solventados en el estudio de la editorial Coyoacán de Jorge Abelardo Ramos a principios de los años sesentas en la Argentina

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La importancia del marxismo en el pensamiento latinoamericano ha sido señalada en reiteradas oportunidades. Su capacidad para generar diversos proyectos políticos y culturales fue una característica central de dicha tradición, desplegada a través de distintos agentes e instituciones desde la llegada de los escritos de Marx y Engels a América Latina a fines del siglo XIX. Sin embargo, buena parte de esa historia todavía es parcial, anclada en perspectivas nacionales y poco atenta al estudio de sus formas materiales, esto es, a aquellos aspectos a través de los cuales el discurso marxista logró conformar una materialidad específica, tanto para la elaboración teórica como la acción de militantes, obreros, estudiantes e intelectuales. El trabajo tiene como objetivo proponer una exploración del marxismo latinoamericano desde la perspectiva de la reconstrucción de su mundo impreso, a partir de delinear una serie de problemas, temas y reflexiones solventados en el estudio de la editorial Coyoacán de Jorge Abelardo Ramos a principios de los años sesentas en la Argentina

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La importancia del marxismo en el pensamiento latinoamericano ha sido señalada en reiteradas oportunidades. Su capacidad para generar diversos proyectos políticos y culturales fue una característica central de dicha tradición, desplegada a través de distintos agentes e instituciones desde la llegada de los escritos de Marx y Engels a América Latina a fines del siglo XIX. Sin embargo, buena parte de esa historia todavía es parcial, anclada en perspectivas nacionales y poco atenta al estudio de sus formas materiales, esto es, a aquellos aspectos a través de los cuales el discurso marxista logró conformar una materialidad específica, tanto para la elaboración teórica como la acción de militantes, obreros, estudiantes e intelectuales. El trabajo tiene como objetivo proponer una exploración del marxismo latinoamericano desde la perspectiva de la reconstrucción de su mundo impreso, a partir de delinear una serie de problemas, temas y reflexiones solventados en el estudio de la editorial Coyoacán de Jorge Abelardo Ramos a principios de los años sesentas en la Argentina

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Esculturas en piedra realizadas por el artista Abelardo Cruz. La Cumbre, 2000.

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Escultura en piedra y madera realizada por Abelardo Cruz, La Cumbre, 2000

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Escultura en piedra realizada por Abelardo Cruz. La Cumbre, 1997.

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casa de Abelardo Orozco en La Cumbre, C. 2000

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Retrato de Ramiro Bejarano, realizado en acrílico, por Abelardo Cruz. La Cumbre, 2000.

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Jorge Lobo`s disease, or lacaziosis, is a chronic deep mycosis that clinically manifests as solid, variable-sized nodular parakeloidal lesions. Few studies have characterized the in situ cellular and humoral immune response, especially the involvement of cytokines with immunosuppressive effects such as TGF-beta. The objective this paper was to analyze the expression of TGF-beta in cutaneous lesions in lacaziosis and investigate its importance in the etiopathogy of the disease. The results indicate that the abundance of collagen bands, together with weak immunolabeling for CD68 seen in macrophages, indicates a concomitant effect of TGF-beta inhibiting macrophages and inducing fibrosis, which is responsible for the keloid aspect frequently acquired by these lesions. Finally, the evolution of the infection supports the hypothesis that TGF-beta plays a fundamental role in the etiopathology of Lacazia loboi infection, either by inhibiting the cellular immune response mainly mediated by macrophages or by inducing fibrosis. Further studies are necessary to better characterize the phenotype of the inflammatory infiltrate as well as the participation of other cytokines and growth factors in the tissue response of the host in Jorge Lobo`s disease. (C) 2008 Published by Elsevier Inc.

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Jorge Lobo`s disease is a chronic infection caused by the fungus Lacazia loboi endemic in South America. The infection is characterized by the appearance of parakeloidal, ulcerated or verrucous nodular or plaque-like cutaneous lesions. The histopathological aspect is characterized by poorly organized granulomas with histiocytes and multinucleated giant cells. Little is known about local immune response in lobomycosis skin lesions. Thirty-three skin biopsies from patients with Jorge Lobo`s disease were selected from Ambulatory of Dermatology, UFPA. The control group was constituted by ten biopsies from normal skin. Langerhans cells were identified by immunohistochemistry using anti-CD1a antibody (Serotec). The number of positive cells was statistically analyzed. Langerhans cells were visualized along the epidermis in biopsies from Jorge Lobo`s disease and the morphology and the number of Langerhans cells did not differ from normal skin (p > 0.05). In Jorge Lobo`s disease, this cell population probably presents some escape mechanism of the local immune system to evade the antigen presentation by those cells. (C) 2010 Published by Elsevier B.V.

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The current study describes the morphologic macular features in two eyes that developed full-thickness macular holes in the setting of documented vitreofoveal separation. Using third-generation optical coherence tomography, complete vitreofoveal separation associated with the disruption of the inner foveal retina was documented in both cases. Five months after presentation, decreased vision and epiretinal membrane formation associated with development of a full-thickness macular hole were observed in the first patient. In the second patient, a full-thickness macular hole was demonstrated by optical coherence tomography 6 weeks after presentation. These findings suggest that full-thickness macular holes may develop in eyes with vitreofoveal separation. Evidence of the disturbance of the inner foveal architecture on optical coherence tomography indicates the potential role of factors other than anteroposterior or oblique vitreoretinal tractional forces in the genesis of some full-thickness macular holes.

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Studies investigating the immunopathological aspects of Jorge Lobo`s disease have shown that the inflammatory infiltrate consists mainly of histiocytes and multinucleated giant cells involving numerous yeast-like cells of Lacazia loboi, with the T lymphocytes more common than B lymphocytes and plasma cells. The quantification of cytokines in peripheral blood mononuclear cells culture supernatant has revealed alterations in the cytokines profile, characterized by predominance of a Th2 profile. In view of these findings and of the role of cytokines in cell interactions, the objective of the present study was to investigate the presence of the cytokines IL-10, TGF-ss 1 and TNF-alpha, as well as iNOS enzyme in granulomas induced by L. loboi. Histological sections obtained from skin lesions of 16 patients were analyzed by immunohistochemistry for the presence of these cytokines and iNOS. The results showed that TGF-ss 1 was the cytokine most frequently expressed by cells present in the inflammatory infiltrate, followed by IL-10. There was a minimum to discrete positivity of cells expressing TNF-alpha and iNOS. The results suggest that the presence of immunosuppressive cytokines in skin lesions of patients with the mycosis might be responsible for the lack of containment of the pathogen as demonstrated by the presence of numerous fungi in the granuloma.