Trypanossoma cruzi: course of infection in platelets-depleted mice Trypanosoma cruzi: curso da infecção em camundongos depletados de plaquetas

The effect of platelet depletion on the course of Trypanosoma cruzi infection in BALB/c mice was investigated. Thrombocytopenia was achieved by inoculation of rabbit anti-platelet IgG during the parasitemic phase of the infection. The number of parasites in the blood of anti-platelet IgG treated was...

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Published in:Revista do Instituto de Medicina Tropical de São Paulo
Main Authors: Margareth Fernandes, Ione Irulegui, Maria P. Deane, Rita de Cassia Ruiz
Format: Article in Journal/Newspaper
Language:English
Published: Universidade de São Paulo (USP) 1992
Subjects:
Online Access:https://doi.org/10.1590/S0036-46651992000100002
https://doaj.org/article/9ad760a5444744fe9c49abafb5c16dca
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spelling ftdoajarticles:oai:doaj.org/article:9ad760a5444744fe9c49abafb5c16dca 2024-09-09T19:27:48+00:00 Trypanossoma cruzi: course of infection in platelets-depleted mice Trypanosoma cruzi: curso da infecção em camundongos depletados de plaquetas Margareth Fernandes Ione Irulegui Maria P. Deane Rita de Cassia Ruiz 1992-02-01T00:00:00Z https://doi.org/10.1590/S0036-46651992000100002 https://doaj.org/article/9ad760a5444744fe9c49abafb5c16dca EN eng Universidade de São Paulo (USP) http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0036-46651992000100002 https://doaj.org/toc/0036-4665 https://doaj.org/toc/1678-9946 doi:10.1590/S0036-46651992000100002 0036-4665 1678-9946 https://doaj.org/article/9ad760a5444744fe9c49abafb5c16dca Revista do Instituto de Medicina Tropical de São Paulo, Vol 34, Iss 1, Pp 9-13 (1992) Trypanosoma cruzi platelets depletion Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 article 1992 ftdoajarticles https://doi.org/10.1590/S0036-46651992000100002 2024-08-05T17:49:31Z The effect of platelet depletion on the course of Trypanosoma cruzi infection in BALB/c mice was investigated. Thrombocytopenia was achieved by inoculation of rabbit anti-platelet IgG during the parasitemic phase of the infection. The number of parasites in the blood of anti-platelet IgG treated was significantly higher than that of non-treated control mice, during the phase of high parasitemia. Cumulative mortality of platelet-depleted mice was consistently but not significantly higher than that of control mice up to the 32nd day of infection; from the 33rd day on they were equivalent, no mortalities occurring from then on, until observations were discontinued on the 60th day. These results suggest that platelets participate of the mechanisms of parasites removal from the bloodstream, but do not have an effective role in the mechanisms of defence against T. cruzi, during the acute phase of infection. O efeito do esgotamento de plaquetas sobre o curso da infecção pelo Trypanosoma cruzi em camundongos BALB/c foi estudado. A trombocitopenia foi provocada por inoculação de IgG de coelho anti-plaquetas durante a fase parasitêmica da infecção. O número de parasitas no sangue dos camundongos tratados com IgG anti-plaquetas foi significantemente maior que aquele dos controles não tratados, no período de maior parasitemia. A mortalidade cumulativa dos camundongos esgotados de plaquetas foi consistente mas não significativamente maior que a dos controles até o 32º dia de infecção; do 33º dia em diante elas foram equivalentes, nenhuma morte ocorrendo a partir de então, até o 60º dia, quando as observações foram interrompidas. Estes resultados sugerem que as plaquetas participam dos mecanismos de remoção dos parasitas da circulação, mas que não desempenham um papel efetivo nos mecanismos de defesa contra o T. cruzi na fase aguda da infecção. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Aguda ENVELOPE(-26.750,-26.750,-76.150,-76.150) Arctic Revista do Instituto de Medicina Tropical de São Paulo 34 1 9 13
institution Open Polar
collection Directory of Open Access Journals: DOAJ Articles
op_collection_id ftdoajarticles
language English
topic Trypanosoma cruzi
platelets depletion
Arctic medicine. Tropical medicine
RC955-962
Infectious and parasitic diseases
RC109-216
spellingShingle Trypanosoma cruzi
platelets depletion
Arctic medicine. Tropical medicine
RC955-962
Infectious and parasitic diseases
RC109-216
Margareth Fernandes
Ione Irulegui
Maria P. Deane
Rita de Cassia Ruiz
Trypanossoma cruzi: course of infection in platelets-depleted mice Trypanosoma cruzi: curso da infecção em camundongos depletados de plaquetas
topic_facet Trypanosoma cruzi
platelets depletion
Arctic medicine. Tropical medicine
RC955-962
Infectious and parasitic diseases
RC109-216
description The effect of platelet depletion on the course of Trypanosoma cruzi infection in BALB/c mice was investigated. Thrombocytopenia was achieved by inoculation of rabbit anti-platelet IgG during the parasitemic phase of the infection. The number of parasites in the blood of anti-platelet IgG treated was significantly higher than that of non-treated control mice, during the phase of high parasitemia. Cumulative mortality of platelet-depleted mice was consistently but not significantly higher than that of control mice up to the 32nd day of infection; from the 33rd day on they were equivalent, no mortalities occurring from then on, until observations were discontinued on the 60th day. These results suggest that platelets participate of the mechanisms of parasites removal from the bloodstream, but do not have an effective role in the mechanisms of defence against T. cruzi, during the acute phase of infection. O efeito do esgotamento de plaquetas sobre o curso da infecção pelo Trypanosoma cruzi em camundongos BALB/c foi estudado. A trombocitopenia foi provocada por inoculação de IgG de coelho anti-plaquetas durante a fase parasitêmica da infecção. O número de parasitas no sangue dos camundongos tratados com IgG anti-plaquetas foi significantemente maior que aquele dos controles não tratados, no período de maior parasitemia. A mortalidade cumulativa dos camundongos esgotados de plaquetas foi consistente mas não significativamente maior que a dos controles até o 32º dia de infecção; do 33º dia em diante elas foram equivalentes, nenhuma morte ocorrendo a partir de então, até o 60º dia, quando as observações foram interrompidas. Estes resultados sugerem que as plaquetas participam dos mecanismos de remoção dos parasitas da circulação, mas que não desempenham um papel efetivo nos mecanismos de defesa contra o T. cruzi na fase aguda da infecção.
format Article in Journal/Newspaper
author Margareth Fernandes
Ione Irulegui
Maria P. Deane
Rita de Cassia Ruiz
author_facet Margareth Fernandes
Ione Irulegui
Maria P. Deane
Rita de Cassia Ruiz
author_sort Margareth Fernandes
title Trypanossoma cruzi: course of infection in platelets-depleted mice Trypanosoma cruzi: curso da infecção em camundongos depletados de plaquetas
title_short Trypanossoma cruzi: course of infection in platelets-depleted mice Trypanosoma cruzi: curso da infecção em camundongos depletados de plaquetas
title_full Trypanossoma cruzi: course of infection in platelets-depleted mice Trypanosoma cruzi: curso da infecção em camundongos depletados de plaquetas
title_fullStr Trypanossoma cruzi: course of infection in platelets-depleted mice Trypanosoma cruzi: curso da infecção em camundongos depletados de plaquetas
title_full_unstemmed Trypanossoma cruzi: course of infection in platelets-depleted mice Trypanosoma cruzi: curso da infecção em camundongos depletados de plaquetas
title_sort trypanossoma cruzi: course of infection in platelets-depleted mice trypanosoma cruzi: curso da infecção em camundongos depletados de plaquetas
publisher Universidade de São Paulo (USP)
publishDate 1992
url https://doi.org/10.1590/S0036-46651992000100002
https://doaj.org/article/9ad760a5444744fe9c49abafb5c16dca
long_lat ENVELOPE(-26.750,-26.750,-76.150,-76.150)
geographic Aguda
Arctic
geographic_facet Aguda
Arctic
genre Arctic
genre_facet Arctic
op_source Revista do Instituto de Medicina Tropical de São Paulo, Vol 34, Iss 1, Pp 9-13 (1992)
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https://doaj.org/toc/0036-4665
https://doaj.org/toc/1678-9946
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0036-4665
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