Specific treatment of hepatosplenic schistosomiasis can increase T-lymphocyte reactivity

It has been recognized that Schistosoma mansoni infection causes depression of T-cell responsiveness. In this study we have evaluated whether immunodepression associated to schistosomiasis could be reverted by specific treatment. T-cell immune response was assessed by means of intradermal tests usin...

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Main Authors: Maria Imaculada Muniz-Junqueira, José Tavares-Neto, Meire Ataide, Aluizio Prata, Carlos Eduardo Tosta
Format: Article in Journal/Newspaper
Language:English
Published: Sociedade Brasileira de Medicina Tropical (SBMT) 1991
Subjects:
Online Access:https://doaj.org/article/f582d850b6984ec4af556ad2c331a607
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spelling ftdoajarticles:oai:doaj.org/article:f582d850b6984ec4af556ad2c331a607 2023-05-15T15:13:27+02:00 Specific treatment of hepatosplenic schistosomiasis can increase T-lymphocyte reactivity Maria Imaculada Muniz-Junqueira José Tavares-Neto Meire Ataide Aluizio Prata Carlos Eduardo Tosta 1991-06-01T00:00:00Z https://doaj.org/article/f582d850b6984ec4af556ad2c331a607 EN eng Sociedade Brasileira de Medicina Tropical (SBMT) http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86821991000200005 https://doaj.org/toc/0037-8682 https://doaj.org/toc/1678-9849 0037-8682 1678-9849 https://doaj.org/article/f582d850b6984ec4af556ad2c331a607 Revista da Sociedade Brasileira de Medicina Tropical, Vol 24, Iss 2, Pp 97-99 (1991) Imunodepressão Esquistossomose Oxamniquine Immunodepression Schistosomiasis Arctic medicine. Tropical medicine RC955-962 article 1991 ftdoajarticles 2022-12-30T23:08:11Z It has been recognized that Schistosoma mansoni infection causes depression of T-cell responsiveness. In this study we have evaluated whether immunodepression associated to schistosomiasis could be reverted by specific treatment. T-cell immune response was assessed by means of intradermal tests using recall antigens in a group of 22 patients with hepatosplenic schistosomiasis, one year after treatment with oxamniquine and compared with a group of untreated hepatosplenic patients. Only 27% of treated patients presented complete anergy to all tested antigens, in marked contrast to 80% unresponsiveness showed by hepatosplenic patients without treatment. Although most of the treated individuals showed some response to the tested antigens, in some individuals this unresponsiveness still persisted after treatment. Anergy was not found in any normal individual of the control group. It was concluded that Schistosoma mansoni infected patients may recover their normal immune responsiveness after the elimination of the worm by treatment Tem sido observado que infecção por Schistosoma mansoni pode causar imunodepressão celular. Neste trabalho foi avaliado se a imunodepressão associada à esquistossomose pode ser revertida pelo tratamento especifico. A resposta imune celular foi determinada através de testes cutâneos de hipersensibilidade retardada em 22 pacientes com a forma hepatoesplênica da esquistossomose um ano após tratamento com oxamniquine e comparado com aquela observada em um grupo de pacientes hepatoesplênicos não tratados. Somente 27% destes pacientes apresentaram alergia a todos os antígenos testados, em contraste com 80% de indivíduos anêrgicos observados entre aqueles não tratados. Embora a maioria dos indivíduos tratados tenha mostrado algum grau de resposta aos antígenos testados, alguns indivíduos permaneceram anérgicos após o tratamento específico. Anergia a todos os antígenos aplicados não foi observada em nenhum dos indivíduos normais. Nossos dados indicam que pacientes esquistossomóticos podem recuperar ... Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic
institution Open Polar
collection Directory of Open Access Journals: DOAJ Articles
op_collection_id ftdoajarticles
language English
topic Imunodepressão
Esquistossomose
Oxamniquine
Immunodepression
Schistosomiasis
Arctic medicine. Tropical medicine
RC955-962
spellingShingle Imunodepressão
Esquistossomose
Oxamniquine
Immunodepression
Schistosomiasis
Arctic medicine. Tropical medicine
RC955-962
Maria Imaculada Muniz-Junqueira
José Tavares-Neto
Meire Ataide
Aluizio Prata
Carlos Eduardo Tosta
Specific treatment of hepatosplenic schistosomiasis can increase T-lymphocyte reactivity
topic_facet Imunodepressão
Esquistossomose
Oxamniquine
Immunodepression
Schistosomiasis
Arctic medicine. Tropical medicine
RC955-962
description It has been recognized that Schistosoma mansoni infection causes depression of T-cell responsiveness. In this study we have evaluated whether immunodepression associated to schistosomiasis could be reverted by specific treatment. T-cell immune response was assessed by means of intradermal tests using recall antigens in a group of 22 patients with hepatosplenic schistosomiasis, one year after treatment with oxamniquine and compared with a group of untreated hepatosplenic patients. Only 27% of treated patients presented complete anergy to all tested antigens, in marked contrast to 80% unresponsiveness showed by hepatosplenic patients without treatment. Although most of the treated individuals showed some response to the tested antigens, in some individuals this unresponsiveness still persisted after treatment. Anergy was not found in any normal individual of the control group. It was concluded that Schistosoma mansoni infected patients may recover their normal immune responsiveness after the elimination of the worm by treatment Tem sido observado que infecção por Schistosoma mansoni pode causar imunodepressão celular. Neste trabalho foi avaliado se a imunodepressão associada à esquistossomose pode ser revertida pelo tratamento especifico. A resposta imune celular foi determinada através de testes cutâneos de hipersensibilidade retardada em 22 pacientes com a forma hepatoesplênica da esquistossomose um ano após tratamento com oxamniquine e comparado com aquela observada em um grupo de pacientes hepatoesplênicos não tratados. Somente 27% destes pacientes apresentaram alergia a todos os antígenos testados, em contraste com 80% de indivíduos anêrgicos observados entre aqueles não tratados. Embora a maioria dos indivíduos tratados tenha mostrado algum grau de resposta aos antígenos testados, alguns indivíduos permaneceram anérgicos após o tratamento específico. Anergia a todos os antígenos aplicados não foi observada em nenhum dos indivíduos normais. Nossos dados indicam que pacientes esquistossomóticos podem recuperar ...
format Article in Journal/Newspaper
author Maria Imaculada Muniz-Junqueira
José Tavares-Neto
Meire Ataide
Aluizio Prata
Carlos Eduardo Tosta
author_facet Maria Imaculada Muniz-Junqueira
José Tavares-Neto
Meire Ataide
Aluizio Prata
Carlos Eduardo Tosta
author_sort Maria Imaculada Muniz-Junqueira
title Specific treatment of hepatosplenic schistosomiasis can increase T-lymphocyte reactivity
title_short Specific treatment of hepatosplenic schistosomiasis can increase T-lymphocyte reactivity
title_full Specific treatment of hepatosplenic schistosomiasis can increase T-lymphocyte reactivity
title_fullStr Specific treatment of hepatosplenic schistosomiasis can increase T-lymphocyte reactivity
title_full_unstemmed Specific treatment of hepatosplenic schistosomiasis can increase T-lymphocyte reactivity
title_sort specific treatment of hepatosplenic schistosomiasis can increase t-lymphocyte reactivity
publisher Sociedade Brasileira de Medicina Tropical (SBMT)
publishDate 1991
url https://doaj.org/article/f582d850b6984ec4af556ad2c331a607
geographic Arctic
geographic_facet Arctic
genre Arctic
genre_facet Arctic
op_source Revista da Sociedade Brasileira de Medicina Tropical, Vol 24, Iss 2, Pp 97-99 (1991)
op_relation http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86821991000200005
https://doaj.org/toc/0037-8682
https://doaj.org/toc/1678-9849
0037-8682
1678-9849
https://doaj.org/article/f582d850b6984ec4af556ad2c331a607
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