ABSTRACT. Bovine papillomaviruses (BPV) are the causal agents of benign and malignant lesions; they can cause dramatic economic losses in cattle. Although 10 virus types have been described, three types are most common in tumors, namely BPV-1, -2 and -4. Previous studies have reported BPV in blood cells and the possibility of blood acting as a latent virus site and/or transmission agent of virus dissemination. We studied a Holstein dairy herd in Pernambuco, Brazil, in which several animals showed severe cutaneous papillomatosis, without previous determination of BPV types. Blood samples and short-term lymphocyte cultures were collected from 54 cows. We compared the BPV types detected in peripheral blood to those identified in the respective lymphocyte cultures: BPV-1 was detected in 74% and BPV-2 in 87% of the whole blood samples. Simultaneous virus presence (BPV-1 and BPV-2) was found in 65% of the blood samples. BPV-1 or BPV-2 were detected in the lymphocyte cultures in 93% of the samples, and both in 89%. The detection of viral DNA in whole blood and in lymphocyte cultures is evidence that this virus is carried by lymphocytes.
Há menos de duas décadas, a América Latina experimentava um intenso momento de lutas, ilustrando transformações no cenário político regional. A “onda rosa” latino-americana manifesta-se fundamentalmente com o triunfo eleitoral de Chávez na Venezuela em 1998, o fracasso da ALCA, a crise capitalista mundial em 2008 e as lutas por nacionalizações na Bolívia e Equador, seguidas pela ascensão presidencial de Evo Morales e Rafael Correa, respectivamente, que sinalizavam relevantes mudanças na geopolítica latino-americana. São governos que articularam institucionalidade e pautas nacional-populares num projeto de caráter heterogêneo e continental, que reascenderam na dimensão política uma tentativa de ruptura com as estruturas de poder e cultura antidemocrática que minavam a credibilidade das instituições políticas locais, trazendo a substituição das constituições em vigor e renovação dos quadros políticos dirigentes. Este estudo foca no caso boliviano, que vivencia o agravamento das críticas em relação às medidas econômicas baseadas na exportação de commodities, considerando o giro à direita na superestrutura política do subcontinente. Problematizaremos sobre as possibilidades de continuidade do novo bloco no poder inaugurado com o Estado Plurinacional da Bolívia.
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