Sera from healthy human volunteers, patients convalescent from meningococcal meningitis, and mice immunized with outer membrane proteins from Neisseria meningitidis and Neisseria lactamica strains were used to analyze and identify antigens cross-reactive to both neisserial species. All classes of meningococcal proteins except class 1 (PorA) and class 5 cross-reacted with N. lactamica proteins and two other proteins of 65 and 55 kDa (an iron-regulated protein). Results obtained with the mouse sera demonstrate that cross-reactive antibodies can be elicited by either N. meningitidis or N. lactamica. These results support the suggestion that N. lactamica contributes to the development of natural immunity against N. meningitidis during the first years of life. The use of vaccines containing proteins other than PorA could interfere in colonization of mucosal surfaces by N. lactamica, hampering the natural mechanisms of immunity acquisition in humans. Only convalescent sera reacted with the 55 and 65 kDa proteins, which suggests that they might be relevant for pathogenicity.
%0 Journal Article
%1 troncoso_analysis_2002
%A Troncoso, G
%A Sánchez, S
%A Criado, M T
%A Ferreirós, C M
%D 2002
%J FEMS Immunology and Medical Microbiology
%K Animals, Antibodies, Antigens, Bacterial Bacterial, C, Cross Humans, Immunity, Immunization, Inbred Innate, Membrane Meningitis, Meningococcal, Mice, Molecular Neisseria Neisseria, Outer Proteins, Reactions, Species Specificity Weight, meningitidis, {BALB}
%N 1
%P 9--15
%T Analysis of Neisseria lactamica antigens putatively implicated in acquisition of natural immunity to Neisseria meningitidis
%U http://www.ncbi.nlm.nih.gov/pubmed/12208601
%V 34
%X Sera from healthy human volunteers, patients convalescent from meningococcal meningitis, and mice immunized with outer membrane proteins from Neisseria meningitidis and Neisseria lactamica strains were used to analyze and identify antigens cross-reactive to both neisserial species. All classes of meningococcal proteins except class 1 (PorA) and class 5 cross-reacted with N. lactamica proteins and two other proteins of 65 and 55 kDa (an iron-regulated protein). Results obtained with the mouse sera demonstrate that cross-reactive antibodies can be elicited by either N. meningitidis or N. lactamica. These results support the suggestion that N. lactamica contributes to the development of natural immunity against N. meningitidis during the first years of life. The use of vaccines containing proteins other than PorA could interfere in colonization of mucosal surfaces by N. lactamica, hampering the natural mechanisms of immunity acquisition in humans. Only convalescent sera reacted with the 55 and 65 kDa proteins, which suggests that they might be relevant for pathogenicity.
@article{troncoso_analysis_2002,
abstract = {Sera from healthy human volunteers, patients convalescent from meningococcal meningitis, and mice immunized with outer membrane proteins from Neisseria meningitidis and Neisseria lactamica strains were used to analyze and identify antigens cross-reactive to both neisserial species. All classes of meningococcal proteins except class 1 {(PorA)} and class 5 cross-reacted with N. lactamica proteins and two other proteins of 65 and 55 {kDa} (an iron-regulated protein). Results obtained with the mouse sera demonstrate that cross-reactive antibodies can be elicited by either N. meningitidis or N. lactamica. These results support the suggestion that N. lactamica contributes to the development of natural immunity against N. meningitidis during the first years of life. The use of vaccines containing proteins other than {PorA} could interfere in colonization of mucosal surfaces by N. lactamica, hampering the natural mechanisms of immunity acquisition in humans. Only convalescent sera reacted with the 55 and 65 {kDa} proteins, which suggests that they might be relevant for pathogenicity.},
added-at = {2011-03-11T10:05:34.000+0100},
author = {Troncoso, G and Sánchez, S and Criado, M T and Ferreirós, C M},
biburl = {https://www.bibsonomy.org/bibtex/228c103a1f129d76d57b4ba3421ef1521/jelias},
interhash = {67c21196cefa319f233a47b0491568d3},
intrahash = {28c103a1f129d76d57b4ba3421ef1521},
issn = {0928-8244},
journal = {{FEMS} Immunology and Medical Microbiology},
keywords = {Animals, Antibodies, Antigens, Bacterial Bacterial, C, Cross Humans, Immunity, Immunization, Inbred Innate, Membrane Meningitis, Meningococcal, Mice, Molecular Neisseria Neisseria, Outer Proteins, Reactions, Species Specificity Weight, meningitidis, {BALB}},
month = sep,
note = {{PMID:} 12208601},
number = 1,
pages = {9--15},
timestamp = {2011-03-11T10:06:42.000+0100},
title = {Analysis of Neisseria lactamica antigens putatively implicated in acquisition of natural immunity to Neisseria meningitidis},
url = {http://www.ncbi.nlm.nih.gov/pubmed/12208601},
volume = 34,
year = 2002
}