This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrowReprints and Permissions
Right arrow Copyright Information
Right arrow Books from ASM Press
Right arrow MicrobeWorld
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Tan, T. T.
Right arrow Articles by Riesbeck, K.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Tan, T. T.
Right arrow Articles by Riesbeck, K.

 Previous Article  |  Next Article 

Infection and Immunity, November 2006, p. 6377-6386, Vol. 74, No. 11
0019-9567/06/$08.00+0     doi:10.1128/IAI.00702-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.

Comparison of the Serological Responses to Moraxella catarrhalis Immunoglobulin D-Binding Outer Membrane Protein and the Ubiquitous Surface Proteins A1 and A2{triangledown}

Thuan Tong Tan,1,2 Jens Jørgen Christensen,3 Morten Hanefeld Dziegiel,4 Arne Forsgren,1 and Kristian Riesbeck1*

Medical Microbiology, Department of Laboratory Medicine, Malmö University Hospital, Lund University, Malmö, Sweden,1 Department of Internal Medicine, Singapore General Hospital, Singapore, Republic of Singapore,2 State Serum Institute,3 HS Blood Bank, Copenhagen University Hospital, Copenhagen, Denmark4

Received 2 May 2006/ Returned for modification 7 June 2006/ Accepted 4 September 2006

Moraxella catarrhalis immunoglobulin D-binding protein (MID) is a complex antigen with unique immunoglobulin D (IgD)-binding, adhesion, and hemagglutination properties. Previous studies have shown that antibodies raised against MID764-913 in rabbits inhibited M. catarrhalis adhesion to human alveolar epithelial cells, and immunization with MID764-913 resulted in an increased pulmonary clearance in a murine model. Strong immune responses against MID have also consistently been shown in humans. Here, the MID-specified IgG responses were compared to those of ubiquitous surface proteins A1 and A2 (UspA1/A2) using a series of recombinant fragments that spanned all three proteins. Sera were obtained from young children, aged 6 months to 1 year (n = 8) and 2 to 3 years (n = 15), and healthy adults (n = 16). Acute- and convalescent-phase sera from chronic obstructive pulmonary disease (COPD) patients with M. catarrhalis infective exacerbations (n = 23) were also analyzed. Young children, who are at risk of M. catarrhalis infection, had low levels of anti-MID and anti-UspA1/A2 antibodies. Healthy adults and the majority of COPD patients (16/23) had high levels of antibodies directed against, among others, the adhesive domain of MID and the fibronectin- and C3-binding domains of UspA1/A2. Among eight COPD patients in whom a rise in antibody levels could be detected, these functional domains were also the main regions targeted by the antibodies. In addition, human IgG directed against MID was bactericidal and anti-MID antibodies were additive to antibodies targeting UspA1/A2. Hence, the functional domains in these three antigens may have significant potential in a future vaccine against M. catarrhalis.

* Corresponding author. Mailing address: Department of Medical Microbiology, Malmö University Hospital, Lund University, SE-205 02, Malmö, Sweden. Phone: 46-40-331340. Fax: 46-40-336234. E-mail: kristian.riesbeck{at}med.lu.se.

{triangledown} Published ahead of print on 11 September 2006.

Editor: J. L. Flynn

Infection and Immunity, November 2006, p. 6377-6386, Vol. 74, No. 11
0019-9567/06/$08.00+0     doi:10.1128/IAI.00702-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • LaFontaine, E. R., Snipes, L. E., Bullard, B., Brauer, A. L., Sethi, S., Murphy, T. F. (2009). Identification of Domains of the Hag/MID Surface Protein Recognized by Systemic and Mucosal Antibodies in Adults with Chronic Obstructive Pulmonary Disease following Clearance of Moraxella catarrhalis. CVI 16: 653-659 [Abstract] [Full Text]  


Copyright © 2009 by the American Society for Microbiology.   For an alternate route to Journals.ASM.org, visit: http://intl-journals.asm.org | More Info»