Data/hora: 14/06/2024 02:33:44

Provedor de dados: 	56	
País: 	Brazil	
Título: 	Short-term and long-term antibody response by mice after immunization against Neisseria meningitidis B or diphtheria toxoid	
Autores: 	Silva,G.P.; Cruz,S.C.; Cruz,A.C.; Milagres,L.G.	
Data: 	2013-02-01	
Ano: 	2013	
Palavras-chave: 	Serological memory; Antibody recall response; Booster immunization.	
Resumo: 	Serogroup B Neisseria meningitidis (MenB) is a major cause of invasive disease in early childhood worldwide. The only MenB vaccine available in Brazil was produced in Cuba and has shown unsatisfactory efficacy when used to immunize millions of children in Brazil. In the present study, we compared the specific functional antibody responses evoked by the Cuban MenB vaccine with a standard vaccine against diphtheria (DTP: diphtheria, tetanus, pertussis) after primary immunization and boosting of mice. The peak of bactericidal and opsonic antibody titers to MenB and of neutralizing antibodies to diphtheria toxoid (DT) was reached after triple immunization with the MenB vaccine or DTP vaccine, respectively. However, 4 months after immunization, protective DT antibody levels were present in all DTP-vaccinated mice but in only 20% of the mice immunized against MenB. After 6 months of primary immunization, about 70% of animals still had protective neutralizing DT antibodies, but none had significant bactericidal antibodies to MenB. The booster doses of DTP or MenB vaccines produced a significant antibody recall response, suggesting that both vaccines were able to generate and maintain memory B cells during the period studied (6 months post-triple immunization). Therefore, due to the short duration of serological memory induced by the MenB vaccine (VA-MENGOC-BC® vaccine), its use should be restricted to outbreaks of meningococcal disease.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000200148	
Editor: 	Associação Brasileira de Divulgação Científica	
Relação: 	10.1590/1414-431X20122556	
Formato: 	text/html	
Fonte: 	Brazilian Journal of Medical and Biological Research  v.46 n.2 2013	
Fonte: 	info:eu-repo/semantics/openAccess