Immunologic profile of HIV-2 seropositive African individuals (follow-up).
Autor(a) principal: | |
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Data de Publicação: | 1991 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/4475 |
Resumo: | In the geographic distribution of HIV-2, it is known that this infection is most prevalent in West Africa. Since 1986 we have studied seropositive and seronegative clusters, in Guinea-Bissau with follow-ups in 1988, 1989, 1990 and 1991. Analysis of the results show the high incidence of this infection. 8.51% of the 4,372 people of the general population studied were seropositive, showing the high predominance of HIV-2 infection. Only 4 cases were exclusively reactive to HIV-1 and a slow evolution of HIV-1 infections. In the seroconversions of HIV-2 infections the antibodies appeared first to the core components and secondly to the surface glycoproteins. Some of the laboratory parameters affected in the evolution of the infection include a gradual increase in immunoglobulins and a decrease in CD4 lymphocytes and in the CD4/CD8 ratio. A comparison of these variations in HIV-2 infected people, with or without cross-reactivity to HIV-1, reveals that they are much more evident in exclusively HIV-2 positive people. This fact can indicate that the variants responsible for the cross-reactions are less pathogenic and phylogenetically less developed. |
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Immunologic profile of HIV-2 seropositive African individuals (follow-up).Perfil imunológico de indivíduos africanos HIV-2 seropositivos (follow-up).In the geographic distribution of HIV-2, it is known that this infection is most prevalent in West Africa. Since 1986 we have studied seropositive and seronegative clusters, in Guinea-Bissau with follow-ups in 1988, 1989, 1990 and 1991. Analysis of the results show the high incidence of this infection. 8.51% of the 4,372 people of the general population studied were seropositive, showing the high predominance of HIV-2 infection. Only 4 cases were exclusively reactive to HIV-1 and a slow evolution of HIV-1 infections. In the seroconversions of HIV-2 infections the antibodies appeared first to the core components and secondly to the surface glycoproteins. Some of the laboratory parameters affected in the evolution of the infection include a gradual increase in immunoglobulins and a decrease in CD4 lymphocytes and in the CD4/CD8 ratio. A comparison of these variations in HIV-2 infected people, with or without cross-reactivity to HIV-1, reveals that they are much more evident in exclusively HIV-2 positive people. This fact can indicate that the variants responsible for the cross-reactions are less pathogenic and phylogenetically less developed.In the geographic distribution of HIV-2, it is known that this infection is most prevalent in West Africa. Since 1986 we have studied seropositive and seronegative clusters, in Guinea-Bissau with follow-ups in 1988, 1989, 1990 and 1991. Analysis of the results show the high incidence of this infection. 8.51% of the 4,372 people of the general population studied were seropositive, showing the high predominance of HIV-2 infection. Only 4 cases were exclusively reactive to HIV-1 and a slow evolution of HIV-1 infections. In the seroconversions of HIV-2 infections the antibodies appeared first to the core components and secondly to the surface glycoproteins. Some of the laboratory parameters affected in the evolution of the infection include a gradual increase in immunoglobulins and a decrease in CD4 lymphocytes and in the CD4/CD8 ratio. A comparison of these variations in HIV-2 infected people, with or without cross-reactivity to HIV-1, reveals that they are much more evident in exclusively HIV-2 positive people. This fact can indicate that the variants responsible for the cross-reactions are less pathogenic and phylogenetically less developed.Ordem dos Médicos1991-12-31info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/4475oai:ojs.www.actamedicaportuguesa.com:article/4475Acta Médica Portuguesa; Vol. 4 (1991): Suplemento 4; 64S-66SActa Médica Portuguesa; Vol. 4 (1991): Suplemento 4; 64S-66S1646-07580870-399Xreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAPporhttps://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/4475https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/4475/3502Pinto, A SFerreira, W FCosta, CSilva, A PAlvarez, E PSousa, R AMansinho, KChampalimaud, J LAraújo, CDias, Finfo:eu-repo/semantics/openAccess2022-12-20T11:03:41Zoai:ojs.www.actamedicaportuguesa.com:article/4475Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:18:52.045291Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Immunologic profile of HIV-2 seropositive African individuals (follow-up). Perfil imunológico de indivíduos africanos HIV-2 seropositivos (follow-up). |
title |
Immunologic profile of HIV-2 seropositive African individuals (follow-up). |
spellingShingle |
Immunologic profile of HIV-2 seropositive African individuals (follow-up). Pinto, A S |
title_short |
Immunologic profile of HIV-2 seropositive African individuals (follow-up). |
title_full |
Immunologic profile of HIV-2 seropositive African individuals (follow-up). |
title_fullStr |
Immunologic profile of HIV-2 seropositive African individuals (follow-up). |
title_full_unstemmed |
Immunologic profile of HIV-2 seropositive African individuals (follow-up). |
title_sort |
Immunologic profile of HIV-2 seropositive African individuals (follow-up). |
author |
Pinto, A S |
author_facet |
Pinto, A S Ferreira, W F Costa, C Silva, A P Alvarez, E P Sousa, R A Mansinho, K Champalimaud, J L Araújo, C Dias, F |
author_role |
author |
author2 |
Ferreira, W F Costa, C Silva, A P Alvarez, E P Sousa, R A Mansinho, K Champalimaud, J L Araújo, C Dias, F |
author2_role |
author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Pinto, A S Ferreira, W F Costa, C Silva, A P Alvarez, E P Sousa, R A Mansinho, K Champalimaud, J L Araújo, C Dias, F |
description |
In the geographic distribution of HIV-2, it is known that this infection is most prevalent in West Africa. Since 1986 we have studied seropositive and seronegative clusters, in Guinea-Bissau with follow-ups in 1988, 1989, 1990 and 1991. Analysis of the results show the high incidence of this infection. 8.51% of the 4,372 people of the general population studied were seropositive, showing the high predominance of HIV-2 infection. Only 4 cases were exclusively reactive to HIV-1 and a slow evolution of HIV-1 infections. In the seroconversions of HIV-2 infections the antibodies appeared first to the core components and secondly to the surface glycoproteins. Some of the laboratory parameters affected in the evolution of the infection include a gradual increase in immunoglobulins and a decrease in CD4 lymphocytes and in the CD4/CD8 ratio. A comparison of these variations in HIV-2 infected people, with or without cross-reactivity to HIV-1, reveals that they are much more evident in exclusively HIV-2 positive people. This fact can indicate that the variants responsible for the cross-reactions are less pathogenic and phylogenetically less developed. |
publishDate |
1991 |
dc.date.none.fl_str_mv |
1991-12-31 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/4475 oai:ojs.www.actamedicaportuguesa.com:article/4475 |
url |
https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/4475 |
identifier_str_mv |
oai:ojs.www.actamedicaportuguesa.com:article/4475 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/4475 https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/4475/3502 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Ordem dos Médicos |
publisher.none.fl_str_mv |
Ordem dos Médicos |
dc.source.none.fl_str_mv |
Acta Médica Portuguesa; Vol. 4 (1991): Suplemento 4; 64S-66S Acta Médica Portuguesa; Vol. 4 (1991): Suplemento 4; 64S-66S 1646-0758 0870-399X reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799130639871508480 |