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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sul. Para informações adicionais entre em contato com cppsul.biblioteca@embrapa.br. |
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Biblioteca(s): |
Embrapa Pecuária Sul. |
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Data corrente: |
15/09/2021 |
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Data da última atualização: |
19/10/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RINALDI, F. M.; GASPAR, E. B.; BRITO, L. T.; DE GASPARI, E. |
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Afiliação: |
FABIANA MAHYLOWSKI RINALDI, Adolfo Lutz Institute; EMANUELLE BALDO GASPAR, CPPSUL; LUCIANA TENDOLINI BRITO, Adolfo Lutz Institute; ELIZABETH DE GASPARI, Adolfo Lutz Institute. |
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Título: |
Immunogenicity of antigens from outer membrane vesicles of Neisseria meningitidis associated with bilayer fragment of dioctadecyldimethylammonium in Swiss adult mice. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Clinical and Experimental Vaccine Research, v. 10, n. 2, p. 106-122, May 2021. |
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Idioma: |
Inglês |
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Conteúdo: |
Purpose In the present study, meningococcal serogroup B outer membrane vesicles (OMVs) were associated with bilayer fragments of a cationic lipid, dioctadecyldimethylammonium (DDA-BF), used as adjuvant, in an antigenic preparation tested in adult female outbred mice. This adjuvant was compared to the traditional adjuvant aluminum hydroxide. Materials and Methods The potential in generating humoral response was evaluated by enzyme-linked immunosorbent assay (ELISA). Individual serum was collected and immunoglobulin G (IgG), IgG1, IgG2a, and IgG2b were quantified. Analyses were carried out 15 and 60 days after immunization. Antibodies avidity index were also analyzed by ELISA. Immunoblot and dot-ELISA were carried out to evaluate specific reaction for homologous strains and cross-reactive antigens present in other meningococcal strains isolated in 2011?2012 year, in Brazil. Delayed type hypersensitivity was used as indicative of cellular immunity and compared between two experimental groups, 24 hours after homologous strain challenge. Results The OMVs of Neisseria meningitidis, and N. lactamica (related species) were characterized by electrophoretic separation of proteins in 13% polyacrylamide gel. The strains presented antigens in the range of 8 to 130 kDa, showing a heterogeneous protein migration pattern. In the group immunized with OMVs/DDA-BF, we found no significant production of total IgG 15 days after the first immunization. On the other hand, 60 days after first immunization both adjuvants act benefiting total IgG production similarly. The antibodies of the IgG isotype produced by animals immunized after one or two doses after first immunization, showed intermediate and high avidity, independent on the adjuvant used. In both experimental groups the swelling of the footpads was significantly higher than those of the controls, suggesting that only one dose was enough to stimulate the generation of cellular immunity. Conclusion The use of this cationic adjuvant for N. meningitidis OMVs preparation revealed good potential for future new antigen preparation for N. meningitidis vaccine. MenosPurpose In the present study, meningococcal serogroup B outer membrane vesicles (OMVs) were associated with bilayer fragments of a cationic lipid, dioctadecyldimethylammonium (DDA-BF), used as adjuvant, in an antigenic preparation tested in adult female outbred mice. This adjuvant was compared to the traditional adjuvant aluminum hydroxide. Materials and Methods The potential in generating humoral response was evaluated by enzyme-linked immunosorbent assay (ELISA). Individual serum was collected and immunoglobulin G (IgG), IgG1, IgG2a, and IgG2b were quantified. Analyses were carried out 15 and 60 days after immunization. Antibodies avidity index were also analyzed by ELISA. Immunoblot and dot-ELISA were carried out to evaluate specific reaction for homologous strains and cross-reactive antigens present in other meningococcal strains isolated in 2011?2012 year, in Brazil. Delayed type hypersensitivity was used as indicative of cellular immunity and compared between two experimental groups, 24 hours after homologous strain challenge. Results The OMVs of Neisseria meningitidis, and N. lactamica (related species) were characterized by electrophoretic separation of proteins in 13% polyacrylamide gel. The strains presented antigens in the range of 8 to 130 kDa, showing a heterogeneous protein migration pattern. In the group immunized with OMVs/DDA-BF, we found no significant production of total IgG 15 days after the first immunization. On the other hand, 60 days after first immun... Mostrar Tudo |
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Thesagro: |
Antígeno; Doença Animal; Imunidade; Meningite. |
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Categoria do assunto: |
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Marc: |
LEADER 02815naa a2200205 a 4500
001 2134442
005 2021-10-19
008 2021 bl uuuu u00u1 u #d
100 1 $aRINALDI, F. M.
245 $aImmunogenicity of antigens from outer membrane vesicles of Neisseria meningitidis associated with bilayer fragment of dioctadecyldimethylammonium in Swiss adult mice.$h[electronic resource]
260 $c2021
520 $aPurpose In the present study, meningococcal serogroup B outer membrane vesicles (OMVs) were associated with bilayer fragments of a cationic lipid, dioctadecyldimethylammonium (DDA-BF), used as adjuvant, in an antigenic preparation tested in adult female outbred mice. This adjuvant was compared to the traditional adjuvant aluminum hydroxide. Materials and Methods The potential in generating humoral response was evaluated by enzyme-linked immunosorbent assay (ELISA). Individual serum was collected and immunoglobulin G (IgG), IgG1, IgG2a, and IgG2b were quantified. Analyses were carried out 15 and 60 days after immunization. Antibodies avidity index were also analyzed by ELISA. Immunoblot and dot-ELISA were carried out to evaluate specific reaction for homologous strains and cross-reactive antigens present in other meningococcal strains isolated in 2011?2012 year, in Brazil. Delayed type hypersensitivity was used as indicative of cellular immunity and compared between two experimental groups, 24 hours after homologous strain challenge. Results The OMVs of Neisseria meningitidis, and N. lactamica (related species) were characterized by electrophoretic separation of proteins in 13% polyacrylamide gel. The strains presented antigens in the range of 8 to 130 kDa, showing a heterogeneous protein migration pattern. In the group immunized with OMVs/DDA-BF, we found no significant production of total IgG 15 days after the first immunization. On the other hand, 60 days after first immunization both adjuvants act benefiting total IgG production similarly. The antibodies of the IgG isotype produced by animals immunized after one or two doses after first immunization, showed intermediate and high avidity, independent on the adjuvant used. In both experimental groups the swelling of the footpads was significantly higher than those of the controls, suggesting that only one dose was enough to stimulate the generation of cellular immunity. Conclusion The use of this cationic adjuvant for N. meningitidis OMVs preparation revealed good potential for future new antigen preparation for N. meningitidis vaccine.
650 $aAntígeno
650 $aDoença Animal
650 $aImunidade
650 $aMeningite
700 1 $aGASPAR, E. B.
700 1 $aBRITO, L. T.
700 1 $aDE GASPARI, E.
773 $tClinical and Experimental Vaccine Research$gv. 10, n. 2, p. 106-122, May 2021.
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Embrapa Pecuária Sul (CPPSUL) |
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| 21. |  | OLIVEIRA, C. J. de; DOMINGUES, R.; GRANADA, R. L.; MINHO, A. P.; GASPAR, E. B. Ação antibacteriana in vitro de extratos vegetais de plantas do Bioma Pampa. In: SIMPÓSIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA PECUÁRIA SUL, 6., 2016, Bagé. Resumos... Bagé: Embrapa Pecuária Sul, 2016. p. 9. Claudia Cristina Gulias Gomes, editora técnica.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 25. | | GASPAR, E. B.; MINHO, A. P.; SUÑÉ, R. W.; DOMINGUES, R. Caracterização da mastite subclínica em animais das raças Holandesa e Jersey criados a pasto. In: CONGRESSO DE INICIAÇÃO CIENTÍFICA, 25.; CONGRESSO DE EXTENSÃO E CULTURA, 3.; CONGRESSO DE ENSINO DE GRADUAÇÃO, 2.; ENCONTRO DE PÓS-GRADUAÇÃO, 18., 2016, Pelotas. Conhecimento, sociedade e diversidade: anais. Pelotas: UFPEL, 2016. ENPOS.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 27. | | SOARES, S. M.; GASPAR, E. B.; SUÑÉ, R. W.; VIEIRA, M. I. B.; MINHO, A. P. Correlação entre testes laboratoriais e a campo para detecção de mastite subclínica em rebanhos leiteiros. Anais do Salão Internacional de Ensino, Pesquisa e Extensão, Bagé, v. 8, n. 4, 2016.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 32. | | BAUMHARDT, A. B.; ANDRADE, L. G. de; DOMINGUES, R.; GASPAR, E. B. Avaliação de toxicidade do extrato aquoso de Daphnopsis racemosa contra células de mamíferos. In: SIMPÓSIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA PECUÁRIA SUL, 8., 2018, Bagé. Resumos... Bagé: Embrapa Pecuária Sul, 2018. p. 17. (Embrapa Pecuária Sul. Eventos técnicos & científicos, 1). Fernando Flores Cardoso, Daniel Portella Montardo, José Carlos Ferrugem Moraes, Marcos Flávio Silva Borba, Sandro da Silva Camargo, editores técnicos.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 34. | | SANTOS, P. A. dos; DOMINGUES, R.; MINHO, A.; GASPAR, E. B.; SUÑÉ, R. W. Avaliação de dois métodos de predição de peso em bezerras leiteiras. In: CONGRESSO INTERNACIONAL DO LEITE, 13.; WORKSHOP DE POLÍTICAS PÚBLICAS, 13.; SIMPÓSIO DE SUSTENTABILIDADE DA ATIVIDADE LEITEIRA, 14., 2015, Porto Alegre. Anais... Brasília, DF: Embrapa, 2015. 1 CD-ROM. (Embrapa Gado de Leite. Documentos, 184.). Editores Técnicos: Paulo do Carmo Martins, Gilberto Antônio Piccinini, Ernesto Ênio Budke Krug, Marne Sidney de Paula Moreira, Carlos Eugênio Martins, Oreno Ardêmio Heineck, Marcelo Henrique Otenio, Leonardo Dornelles de Dorneles,...| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 35. | | DE GASPARI, E.; FABIANA, M. R.; GASPAR, E. B.; ROSETTI, A. S. Study of the antigenic cross-reactivity between Neisseria meningitidis and commensal Neisseria species using (DDA-BF) as adjuvant. In: EUROPEAN CONGRESS OF IMMUNOLOGY, 3., 2012, Glasgow. A healthier future through research, education and innovation: abstracts. London: Kenes, 2012. Publicado em Immunology, v. 137, p. 660, 2012, suppl. 1. Também publicado no 6th VACCINE & INTERNATIONAL SOCIETY FOR VACCINES CONGRESS, 2012, Shanghai.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| Registros recuperados : 123 | |
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