Clonagem e expressão da glicoproteína transmembrana do vírus linfotrópico de células T humanas em sistema procarioto

HTLV-1 is the virus that causes T cell lymphoma/leukemia in adults and a neurological disorder known as HTLV-associated myelopathy or tropical spastic paraparesis. One of the transmission means is through contaminated blood and its byproducts. Because of the risk of HTLV-associated infections, screening for HTLV was introduced for Brazilian blood donors in 1993. Most of the diagnostic kits used in the national blood banks are bought from foreign companies. Brazil does not have the technology to produce this material and there is a need to produce diagnostic systems with national technology. In this study, we show the expression of gp21/HTLV-1 in Escherichia coli and its reactivity towards monoclonal antibodies and the antibodies of infected patients. Expressing these proteins is the first step towards obtaining diagnostic kits with Brazilian biotechnology.

Impacto humano afeta negativamente a dispersão de sementes de frutos ornitocóricos: Uma perspectiva global

Ornithochorous fruits make up an important part of the diet of birds and many studies have related the different morphological types of fruits with the choice by birds. We analyzed the intrinsic characteristics of plants and how human impact can affect this choice. Through analyses of covariance we related the degree of human pressure in each study site (high or low) and the morphological characteristics of 57 ornithochorous species with visiting rates and consumption of fruits by birds. We did not find any intrinsic plant characteristic (life form, size and type of diaspore) that explains the rates of consumption and visit by birds. On the other hand, the degree of human impact affected directly the mutualism between plants and birds. Plant species located in areas that suffer high human pressure had number of visits and consumption rates 3,3 and 3,5 lower than plants located in pristine areas, respectively. The negative consequences of the reduction of consumption of fruits in areas with high human pressures may directly affects the interactions between birds and plants and the regeneration of the ornithochorous species.

Políticas para la acumulación de capital humano en América Latina y el Caribe

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Los objetivos de desarrollo del milenio y los desafíos para América Latina y el Caribe para avanzar en mayor bienestar, mejor capital humano y más igualdad de oportunidades

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Formación de capital humano y el vínculo entre comercio y pobreza: los casos de Costa Rica y Nicaragua

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Formación de capital humano y el vínculo entre comercio y pobreza: los casos de Costa Rica y Nicaragua

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Protección del derecho humano al agua y arbitrajes de inversión

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Infancia en América Latina: Privaciones habitacionales y desarrollo de capital humano

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El derecho humano al agua y al saneamiento frente a los Objetivos de Desarrollo del Milenio (ODM)

Prólogo de Alicia Bárcena

El desarrollo humano y los pueblos indígenas

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Estado Plurinacional de Bolivia: creación, desempeño y eliminación del Ministerio de Desarrollo Humano

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Colombia: desarrollo humano y la búsqueda de una descentralización con centro y sentido

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La medición del desarrollo humano: elementos de un debate

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México: capital humano e ingresos. Retornos a la educación, 1994-2005

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Caracterización del tercer sector en las políticas de formación de capital humano en Uruguay

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