Moraxella catarrhalis outer membrane protein CD elicits antibodies that inhibit CD binding to human mucin and enhance pulmonary clearance of M. catarrhalis in a mouse model.

The outer membrane protein CD of Moraxella catarrhalis is considered to be a potential vaccine antigen against Moraxella infection. We purified the native CD from isolate O35E, administered it to mice, and detected considerable titers of anti-CD antibodies. Anti-CD sera were cross-reactive towards six different M.

Polymorphism of the major surface epitope of the CopB outer membrane protein of Moraxella catarrhalis.

The CopB outer membrane protein has been considered a vaccine candidate for the prevention of infections due to Moraxella catarrhalis. Monoclonal antibody 10F3 recognizes whole cells of about 70% of clinical isolates, suggesting that this epitope is reasonably conserved. To determine whether CopB has other surface epitopes, we analyzed M.

Construction and immunological characterization of a novel nontoxic protective pneumolysin mutant for use in future pneumococcal vaccines.

Pneumolysin, the pore-forming toxin produced by Streptococcus pneumoniae, may have an application as an immunogenic carrier protein in future pneumococcal conjugate vaccines. Most of the 90 S. pneumoniae serotypes identified produce pneumolysin; therefore, this protein may confer non-serotype-specific protection against pneumococcal infections such as pneumonia, meningitis, and otitis media.

The C-terminal fragment of the internal 110-kilodalton passenger domain of the Hap protein of nontypeable Haemophilus influenzae is a potential vaccine candidate.

Nontypeable Haemophilus influenzae is a major causative agent of bacterial otitis media in children. H. influenzae Hap autotransporter protein is an adhesin composed of an outer membrane Hapbeta region and a moiety of an extracellular internal 110-kDa passenger domain called Hap(S).

Human immune response to outer membrane protein CD of Moraxella catarrhalis in adults with chronic obstructive pulmonary disease.

Moraxella catarrhalis is a common cause of lower respiratory tract infection in adults with chronic obstructive pulmonary disease (COPD). The antibody response to outer membrane protein (OMP) CD, a highly conserved surface protein of M. catarrhalis under consideration as a vaccine antigen, was studied in adults with COPD following 40 episodes of infection or colonization.