Bacillus pumilus polysaccharide cross-reactive with meningococcal group A polysaccharide

Chemical structure, conjugation, and cross-reactivity of Bacillus pumilus Sh18 cell wall polysaccharide.

Bacillus pumilus strain Sh18 cell wall polysaccharide (CWP), cross-reactive with the capsular polysaccharide of Haemophilus influenzae type b, was purified and its chemical structure was elucidated using fast atom bombardment mass spectrometry, nuclear magnetic resonance techniques, and sugar-specific degradation procedures. Two major structures, 1,5-poly(ribitol phosphate) and 1,3-poly(glycero...

Conjugate and Polysaccharide Vaccines Conjugate and Polysaccharide Vaccines, Plenary Review Meningococcal polysaccharide-protein conjugate vaccines

N-propionylated group B meningococcal polysaccharide mimics a unique epitope on group B Neisseria meningitidis

Antibodies induced in mice by the N-propionyl (N-Pr)-group B meningococcal polysaccharide (GBMP)-tetanus toxoid (TT) conjugate were bactericidal for GBM organisms independent of protein serotype. The antisera contained two populations of N-Pr-GBMP-specific antibodies, only one of which crossreacted with the GBMP. Particularly significant was the fact that the bactericidal activity was mainly as...

Clinical evaluation of group A and group C meningococcal polysaccharide vaccines in infants.

Group A and group C meningoccal polysaccharide vaccines were evaluated in infants. No significant local or systemic reactions were observed with 908 doses of vaccine given to 396 infants between 3 and 12 mo of age. The antibody response varied with the age of the infant, vaccine dose, molecular weight of vaccine, prior immunization with vaccine, and prior exposure to naturally occurring cross-r...

Antibody responses to meningococcal polysaccharide vaccines.

Over the past 4 years 19 lots of group C polysaccharide vaccine and five lots of group A polysaccharide vaccine have been tested for their immunogenicity in man. For each lot tested, groups of 18 to 50 men received 50 mug of vaccine subcutaneously. Sera were obtained prior to and 2 weeks after vaccination. The analytical and serological methods used in these studies were Sepharose 4B chromatogr...