Role of Yersinia pseudotuberculosis outer proteins (Yops) in murine humoral immune response

2009 ◽  
Vol 54 (3) ◽  
pp. 239-245 ◽  
Author(s):  
J. M. L. Maia ◽  
L. G. S. Monnazzi ◽  
B. M. M. Medeiros
Keyword(s):  
Immune Response ◽  
Humoral Immune Response ◽  
Yersinia Pseudotuberculosis ◽  
Humoral Immune

scholarly journals Role of bacterial products in periodontitis: humoral immune response to Eikenella corrodens.

1978 ◽  
Vol 22 (2) ◽  
pp. 382-386 ◽  
Author(s):  
D A Johnson ◽  
U H Behling ◽  
M Listgarten ◽  
A Nowotny
Keyword(s):  
Immune Response ◽  
Humoral Immune Response ◽  
Eikenella Corrodens ◽  
Humoral Immune ◽  
Bacterial Products

The role of anti‐flavivirus humoral immune response in protection and pathogenesis

2020 ◽  
Vol 30 (4) ◽  
Author(s):  
Arianna Mahely Hurtado‐Monzón ◽  
Carlos Daniel Cordero‐Rivera ◽  
Carlos Noe Farfan‐Morales ◽  
Juan Fidel Osuna‐Ramos ◽  
Luis Adrián De Jesús‐González ◽  
...  
Keyword(s):  
Immune Response ◽  
Humoral Immune Response ◽  
Humoral Immune

scholarly journals Potential role of soluble CD40 in the humoral immune response impairment of uraemic patients

Immunology ◽  
2003 ◽  
Vol 110 (1) ◽  
pp. 131-140 ◽  
Author(s):  
Cecile Contin ◽  
Vincent Pitard ◽  
Yahsou Delmas ◽  
Nadege Pelletier ◽  
Thierry Defrance ◽  
...  
Keyword(s):  
Immune Response ◽  
Humoral Immune Response ◽  
Potential Role ◽  
Humoral Immune

scholarly journals Role of Bordetella bronchisepticaFimbriae in Tracheal Colonization and Development of a Humoral Immune Response

2000 ◽  
Vol 68 (4) ◽  
pp. 2024-2033 ◽  
Author(s):  
Seema Mattoo ◽  
Jeff F. Miller ◽  
Peggy A. Cotter
Keyword(s):  
Immune Response ◽  
Humoral Immune Response ◽  
Limit Of Detection ◽  
Immunoglobulin M ◽  
Tissue Culture Cell ◽  
Wild Type ◽  
Humoral Immune ◽  
Tract Infections

ABSTRACT Fimbriae are filamentous, cell surface structures which have been proposed to mediate attachment of Bordetella species to respiratory epithelium. Bordetella bronchiseptica has four known fimbrial genes: fim2, fim3,fimX, and fimA. While these genes are unlinked on the chromosome, their protein products are assembled and secreted by a single apparatus encoded by the fimBCD locus. ThefimBCD locus is embedded within the fha operon, whose genes encode another putative adhesin, filamentous hemagglutinin (FHA). We have constructed a Fim− B. bronchiseptica strain, RB63, by introducing an in-frame deletion extending from fimB through fimD. Western blot analysis showed that RB63 is unable to synthesize fimbriae but is unaffected for FHA expression. Using this mutant, we assessed the role of fimbriae in pathogenesis in vitro and in vivo in natural animal hosts. Although RB63 was not significantly defective in its ability to adhere to various tissue culture cell lines, including human laryngeal HEp-2 cells, it was considerably altered in its ability to cause respiratory tract infections in rats. The number of ΔfimBCD bacteria recovered from the rat trachea at 10 days postinoculation was significantly decreased compared to that of wild-type B. bronchiseptica and was below the limit of detection at 30 and 60 days postinoculation. The number of bacteria recovered from the nasal cavity and larynx was not significantly different between RB63 and the wild-type strain at any time point. The ability of fimbriae to mediate initial attachment to tracheal tissue was tested in an intratracheal inoculation assay. Significantly fewer RB63 than wild-type bacteria were recovered from the tracheas at 24 h after intratracheal inoculation. These results demonstrate that fimbriae are involved in enhancing the ability of B. bronchiseptica to establish tracheal colonization and are essential for persistent colonization at this site. Interestingly, anti-Bordetella serum immunoglobulin M (IgM) levels were significantly lower in animals infected with RB63 than in animals infected with wild-type B. bronchiseptica at 10 days postinoculation. Even at 30 days postinoculation, RB63-infected animals had lower serum anti-Bordetella antibody titers in general. This disparity in antibody profiles suggests that fimbriae are also important for the induction of a humoral immune response.

Mother to child transmission of HIV-1 in a Thai population: Role of virus characteristics and maternal humoral immune response

2009 ◽  
Vol 81 (5) ◽  
pp. 768-778 ◽  
Author(s):  
Chonticha Kittinunvorakoon ◽  
Mary Kate Morris ◽  
Kanchana Neeyapun ◽  
Bongkoch Jetsawang ◽  
Gertrude C. Buehring ◽  
...  
Keyword(s):  
Immune Response ◽  
Humoral Immune Response ◽  
Mother To Child Transmission ◽  
Child Transmission ◽  
Thai Population ◽  
Humoral Immune ◽  
Mother To Child ◽  
Hiv 1

Role of IgD and Tdelta Cells in the Regulation of the Humoral Immune Response

1988 ◽  
Vol 105 (1) ◽  
pp. 45-68 ◽  
Author(s):  
Richard F. Coico ◽  
Gregory W. Siskjnd ◽  
G. Jeanette Thorbecke
Keyword(s):  
Immune Response ◽  
Humoral Immune Response ◽  
Humoral Immune
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