Universidade Estadual de Londrina

About: Universidade Estadual de Londrina is a education organization based out in Londrina, Brazil. It is known for research contribution in the topics: Population & Context (language use). The organization has 13052 authors who have published 19291 publications receiving 212123 citations.

Averrhoa carambola L., Syzygium cumini (L.) Skeels and Cissus sicyoides L.: medicinal herbal tea effects on vegetal and animal test systems

Abstract: Since folk medicine has been greatly appreciated for centuries, many researchers decided to study more deeply the curative qualities of plants. In the present study, meristematic cells of Allium cepa L. were used as vegetal test system and bone marrow cells of Wistar rats as animal test system. Both were treated in vivo to evaluate whether the plants Averrhoa carambola L., Syzygium cumini (L.) Skeels and Cissus sicyoides L. presented cytotoxic and mutagenic effects and whether they resulted in cell alterations in their morphology, chromosomes or cell cycle division. Herbal teas were prepared as normally done by the population, albeit in two different concentrations, the usual concentration and a concentration ten times higher. Rats were treated with only one concentration of teas. Results showed that teas did not alter the cell cycle of Allium cepa L., with the exception of the 24 hours analysis after suspension of treatment (recovery of treatments), with a lower concentration of Averrhoa carambola. The latter had a low mitotic index when compared to control and to the post-treatment analysis, showing an inhibition of cell division. The three herbal teas neither induced an increase in the number of chromosomal damage in bone marrow cells of Wistar rats nor altered the cell division cycle. Results are important in so far as these plants are used as therapeutic agents.

A review of the occurrence of hemoplasmas (hemotrophic mycoplasmas) in Brazil

Abstract: Recent studies have been conducted in Brazil using molecular techniques for the detection of hemotrophic mycoplasmas in several mammals In domestic cats, Mycoplasma haemofelis, "Candidatus M haemominutum", and "Candidatus M turicensis" infections have been identified These species have also been found in free-ranging and captive neotropical felid species Two canine hemoplasmas, Mycoplasma haemocanis and "Candidatus Mycoplasma haematoparvum", have been identified in dogs In commercial swine populations, Mycoplasma suis was found to be highly prevalent, especially in sows Moreover, novel mycoplasma species have been identified in Brazilian commercial pigs and domestic dogs A hemoplasma infection in a human patient infected with the human immunodeficiency virus (HIV) was also recently documented In conclusion, hemoplasma species are common and important infectious agents in Brazil Further studies should be conducted to better understand their impact on pets, production animals, and wildlife fauna, as well as their role as zoonotic agents, particularly in immunocompromised patients

Metodologia da problematização: uma alternativa metodológica apropriada para o ensino superior

Abstract: Normal 0 21 MicrosoftInternetExplorer4 Diante da reiterada constatacao da predominância da Pedagogia da Transmissao no Ensino Superior, o que caracteriza um ensino centrado no professor e seu saber ao inves da aprendizagem do aluno, neste artigo apresenta-se a Metodologia da Problematizacao, como uma alternativa metodologica com grande potencial pedagogico para preparar o futuro profissional e cidada,o, requerido para uma· sociedade em rapidas transformacoes. O texto foi construido seguindo-se os passos da propria Metodologia: observacao da realidade e definicao de um problema de estudo, pontos-chave, teorizacao, hipoteses de solucao e aplicacao a realidade. As caracteristicas dessa Metodologia sao explicadas, discutidas, analisadas, com apoio em Juan Diaz Bordenave e outros autores e algumas experiencias sao destacadas como suporte do processo de acao-reflexao, para as hipoteses de solucao e aplicacoes possiveis a realidade do contexto proximo do Ensino Superior, a partir do qual foi formulado o problema.