Trypanosoma cruziand myoid cells from seminiferous tubules: interaction and relation with fibrous components of extracellular matrix in experimental Chagas' disease |
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Authors: | Luiz Otávio Pereira Carvalho Ana Lucia Abreu-Silva Daiana de Jesús Hardoim Roberto Carlos Tedesco Verônica Gonçalves Mendes Sylvio Celso Gonçalves da Costa Kátia da Silva Calabrese |
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Institution: | Laboratório de Imunomodulação e Protozoologia, Instituto Oswaldo Cruz, FIOCRUZ, Brazil;, Departamento de Patologia da Universidade Estadual do Maranhão, São Luís, Maranhão, Brazil;, Laboratório de Biologia Estrutural, Instituto Oswaldo Cruz, FIOCRUZ, Brazil;and Disciplina de Anatomia Topográfica e Descritiva, Departamento de Morfologia, Escola Paulista de Medicina, UNIFESP, São Paulo, Brazil |
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Abstract: | The main transmission route of Trypanosoma cruzi is by triatomine bugs. However, T. cruzi is also transmitted through blood transfusion, organ transplantation, ingestion of contaminated food or fluids, or is congenital. Sexual transmission, although suggested since the discovery of Chagas' disease, has remained unproven. Sexual transmission would require T. cruzi to be located at the testes and ovaries. Here we investigated whether T. cruzi is present in the gonads of mice infected with 104 T. cruzi trypomastigotes from the CL strain. Fourteen days after experimental infection, histopathological examination showed alterations in the extracellular matrix of the lamina propria of the seminiferous tubules. Furthermore, amastigotes were present in seminiferous tubules, within myoid cells, and in the adjacencies of the basal compartment. These results indicate that T. cruzi is able to reach seminiferous tubule lumen, thus suggesting that Chagas' disease could potentially be transmitted through sexual intercourse. Complementary studies are required to demonstrate that Chagas' disease can be transmitted by coitus. |
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Keywords: | collagenous experimental Chagas' disease extracellular matrix myoid cells seminiferous tubules |
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