Experimental studies on Trypanosoma (Schizotrypanum) cruzi strains isolated from man, from animals and from triatomine bugs in Brazil
A study on nine strains of T. cruzi isolated from man, from animais and from triatomine bugs in Brazil are described. The parasites were slightly viscerotropic in white mice in six of the strains, highly viscerotropic and cardiotropic in two strains, and asymptomatic on one strain. Mechanical and cy...
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Sociedade Brasileira de Medicina Tropical (SBMT)
1974
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ftdoajarticles:oai:doaj.org/article:4bc5be64fe6f4f34ab8906a00431a17d 2023-05-15T15:13:33+02:00 Experimental studies on Trypanosoma (Schizotrypanum) cruzi strains isolated from man, from animals and from triatomine bugs in Brazil W. B. Petana J. R. Coura 1974-12-01T00:00:00Z https://doaj.org/article/4bc5be64fe6f4f34ab8906a00431a17d EN eng Sociedade Brasileira de Medicina Tropical (SBMT) http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86821974000600002 https://doaj.org/toc/0037-8682 https://doaj.org/toc/1678-9849 0037-8682 1678-9849 https://doaj.org/article/4bc5be64fe6f4f34ab8906a00431a17d Revista da Sociedade Brasileira de Medicina Tropical, Vol 8, Iss 6, Pp 315-323 (1974) Arctic medicine. Tropical medicine RC955-962 article 1974 ftdoajarticles 2022-12-30T23:22:44Z A study on nine strains of T. cruzi isolated from man, from animais and from triatomine bugs in Brazil are described. The parasites were slightly viscerotropic in white mice in six of the strains, highly viscerotropic and cardiotropic in two strains, and asymptomatic on one strain. Mechanical and cyclical passage from infected to healthy mice, and treatment of the infected mice with immunosuppressant drug, did not increase the blood parasitaemia or strain virulence. The results of biometric studies on the blood trypanosomes from each strain are also described. The various aspects on the importance of T. cruzi strain Identification are emphasized and discussed. Nove cepas de T. cruzi, 5 isoladas do homem, 2 isoladas do cão e 2 outras isoladas de Triatoma infestans domiciliados, foram estudadas do ponto de vista morfólógico e de sua virulência e patogenicidade para o camundongo, em um período de observação de 8 a 12 meses. As cinco cepas isoladas do homem mostraram baixa parasitemia quando inoculadas no camundongo e provocaram nesse animal apenas redução dos glânglios mioentéricos do colon e discreto aumento desse órgão. Das duas cepas isoladas do cão uma provocou megacolon e cardiomegalia no camundongo e a outra comportau-se de forma semelhante às cepas isoladas do homem. Das cepas isoladas do T. infestans uma foi absolutamente avirulenta para o camundongo e a outra provocou redução dos gânglios do colon e do miocárdio, cardiomegalia e megacolon. Admitem os autores que a passagem "cíclica" de uma cepa de um reservatório para outro possa modificar o seu comportamento, servindo o homem como "reservatório estabilizador" da baixa virulência e patogenicidade das cepas, pelo menos daquelas isoladas de casos crônicos Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic medicine. Tropical medicine RC955-962 |
spellingShingle |
Arctic medicine. Tropical medicine RC955-962 W. B. Petana J. R. Coura Experimental studies on Trypanosoma (Schizotrypanum) cruzi strains isolated from man, from animals and from triatomine bugs in Brazil |
topic_facet |
Arctic medicine. Tropical medicine RC955-962 |
description |
A study on nine strains of T. cruzi isolated from man, from animais and from triatomine bugs in Brazil are described. The parasites were slightly viscerotropic in white mice in six of the strains, highly viscerotropic and cardiotropic in two strains, and asymptomatic on one strain. Mechanical and cyclical passage from infected to healthy mice, and treatment of the infected mice with immunosuppressant drug, did not increase the blood parasitaemia or strain virulence. The results of biometric studies on the blood trypanosomes from each strain are also described. The various aspects on the importance of T. cruzi strain Identification are emphasized and discussed. Nove cepas de T. cruzi, 5 isoladas do homem, 2 isoladas do cão e 2 outras isoladas de Triatoma infestans domiciliados, foram estudadas do ponto de vista morfólógico e de sua virulência e patogenicidade para o camundongo, em um período de observação de 8 a 12 meses. As cinco cepas isoladas do homem mostraram baixa parasitemia quando inoculadas no camundongo e provocaram nesse animal apenas redução dos glânglios mioentéricos do colon e discreto aumento desse órgão. Das duas cepas isoladas do cão uma provocou megacolon e cardiomegalia no camundongo e a outra comportau-se de forma semelhante às cepas isoladas do homem. Das cepas isoladas do T. infestans uma foi absolutamente avirulenta para o camundongo e a outra provocou redução dos gânglios do colon e do miocárdio, cardiomegalia e megacolon. Admitem os autores que a passagem "cíclica" de uma cepa de um reservatório para outro possa modificar o seu comportamento, servindo o homem como "reservatório estabilizador" da baixa virulência e patogenicidade das cepas, pelo menos daquelas isoladas de casos crônicos |
format |
Article in Journal/Newspaper |
author |
W. B. Petana J. R. Coura |
author_facet |
W. B. Petana J. R. Coura |
author_sort |
W. B. Petana |
title |
Experimental studies on Trypanosoma (Schizotrypanum) cruzi strains isolated from man, from animals and from triatomine bugs in Brazil |
title_short |
Experimental studies on Trypanosoma (Schizotrypanum) cruzi strains isolated from man, from animals and from triatomine bugs in Brazil |
title_full |
Experimental studies on Trypanosoma (Schizotrypanum) cruzi strains isolated from man, from animals and from triatomine bugs in Brazil |
title_fullStr |
Experimental studies on Trypanosoma (Schizotrypanum) cruzi strains isolated from man, from animals and from triatomine bugs in Brazil |
title_full_unstemmed |
Experimental studies on Trypanosoma (Schizotrypanum) cruzi strains isolated from man, from animals and from triatomine bugs in Brazil |
title_sort |
experimental studies on trypanosoma (schizotrypanum) cruzi strains isolated from man, from animals and from triatomine bugs in brazil |
publisher |
Sociedade Brasileira de Medicina Tropical (SBMT) |
publishDate |
1974 |
url |
https://doaj.org/article/4bc5be64fe6f4f34ab8906a00431a17d |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Revista da Sociedade Brasileira de Medicina Tropical, Vol 8, Iss 6, Pp 315-323 (1974) |
op_relation |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86821974000600002 https://doaj.org/toc/0037-8682 https://doaj.org/toc/1678-9849 0037-8682 1678-9849 https://doaj.org/article/4bc5be64fe6f4f34ab8906a00431a17d |
_version_ |
1766344097743765504 |