Biomaterial Database

Immunochemical relations between pneumococcal group 19 and Klebsiella capsular polysaccharides. 1981

C J Lee, and K Koizumi

Pneumococcal type 19F polysaccharide, contained in the current U.S. licensed pneumococcal vaccine, is a poor immunogen in young children. Capsular polysaccharides of Klebsiella, reported to be cross-reactive with the pneumococcal type 19F, were isolated. Immunochemical relations between pneumococcal group 19 and Klebsiella capsular polysaccharides were studied by immunodiffusion with hyperimmune typing antisera, immune passive hemolysis, and plaque-forming cell response in mice following injection of polysaccharides. Klebsiella K2, K9, K32, K47, and K48 polysaccharides were reported to cross-react with horse pneumococcal type 19 antiserum by direct precipitation. However, these Klebsiella polysaccharides did not react in immunodiffusion with horse or with rabbit pneumococcal 19F and 19A typing antisera. Furthermore, pneumococcal type 19F and 19A polysaccharides did not precipitate with rabbit K2, K9, K32, K47, and K49 typing antisera. The cross-reactivity of the Klebsiella and pneumococcal polysaccharides was studied by 2 other methods. Rabbit pneumococcal 19F antiserum induced by low passive hemolysis of sheep erythrocytes coated with Klebsiella polysaccharides. In contrast, Klebsiella typing antisera exhibited higher hemolytic activity with erythrocytes coated with type 19F polysaccharides. The cross-reactivity of K2 and pneumococcal 19F polysaccharides was also exhibited by the direct IgM plaque-forming cell response. The cross-reactivity, determined by precipitin reactions using animal antisera, may not predict the cross-immunogenicity of purified polysaccharides in humans.

UI	MeSH Term	Description	Entries
D007711	Klebsiella pneumoniae	Gram-negative, non-motile, capsulated, gas-producing rods found widely in nature and associated with urinary and respiratory infections in humans.	Bacillus pneumoniae,Bacterium pneumoniae crouposae,Hyalococcus pneumoniae,Klebsiella pneumoniae aerogenes,Klebsiella rhinoscleromatis
D011135	Polysaccharides, Bacterial	Polysaccharides found in bacteria and in capsules thereof.	Bacterial Polysaccharides
D011817	Rabbits	A burrowing plant-eating mammal with hind limbs that are longer than its fore limbs. It belongs to the family Leporidae of the order Lagomorpha, and in contrast to hares, possesses 22 instead of 24 pairs of chromosomes.	Belgian Hare,New Zealand Rabbit,New Zealand Rabbits,New Zealand White Rabbit,Rabbit,Rabbit, Domestic,Chinchilla Rabbits,NZW Rabbits,New Zealand White Rabbits,Oryctolagus cuniculus,Chinchilla Rabbit,Domestic Rabbit,Domestic Rabbits,Hare, Belgian,NZW Rabbit,Rabbit, Chinchilla,Rabbit, NZW,Rabbit, New Zealand,Rabbits, Chinchilla,Rabbits, Domestic,Rabbits, NZW,Rabbits, New Zealand,Zealand Rabbit, New,Zealand Rabbits, New,cuniculus, Oryctolagus
D005779	Immunodiffusion	Technique involving the diffusion of antigen or antibody through a semisolid medium, usually agar or agarose gel, with the result being a precipitin reaction.	Gel Diffusion Tests,Diffusion Test, Gel,Diffusion Tests, Gel,Gel Diffusion Test,Immunodiffusions,Test, Gel Diffusion,Tests, Gel Diffusion
D006461	Hemolysis	The destruction of ERYTHROCYTES by many different causal agents such as antibodies, bacteria, chemicals, temperature, and changes in tonicity.	Haemolysis,Extravascular Hemolysis,Intravascular Hemolysis,Extravascular Hemolyses,Haemolyses,Hemolyses, Extravascular,Hemolyses, Intravascular,Hemolysis, Extravascular,Hemolysis, Intravascular,Intravascular Hemolyses
D006462	Hemolytic Plaque Technique	A method to identify and enumerate cells that are synthesizing ANTIBODIES against ANTIGENS or HAPTENS conjugated to sheep RED BLOOD CELLS. The sheep red blood cells surrounding cells secreting antibody are lysed by added COMPLEMENT producing a clear zone of HEMOLYSIS. (From Illustrated Dictionary of Immunology, 3rd ed)	Jerne's Plaque Technique,Hemolytic Plaque Technic,Jerne's Plaque Technic,Hemolytic Plaque Technics,Hemolytic Plaque Techniques,Jerne Plaque Technic,Jerne Plaque Technique,Jernes Plaque Technic,Jernes Plaque Technique,Plaque Technic, Hemolytic,Plaque Technic, Jerne's,Plaque Technics, Hemolytic,Plaque Technique, Hemolytic,Plaque Technique, Jerne's,Plaque Techniques, Hemolytic,Technic, Hemolytic Plaque,Technic, Jerne's Plaque,Technics, Hemolytic Plaque,Technique, Hemolytic Plaque,Technique, Jerne's Plaque,Techniques, Hemolytic Plaque
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D000921	Antibody-Producing Cells	Cells of the lymphoid series that can react with antigen to produce specific cell products called antibodies. Various cell subpopulations, often B-lymphocytes, can be defined, based on the different classes of immunoglobulins that they synthesize.	Antibody-Producing Cell,Antibody-Secreting Cell,Antibody-Secreting Cells,Immunoglobulin-Producing Cells,Immunoglobulin-Secreting Cells,Antibody Producing Cell,Antibody Producing Cells,Antibody Secreting Cell,Antibody Secreting Cells,Cell, Antibody-Producing,Cell, Antibody-Secreting,Cell, Immunoglobulin-Producing,Cell, Immunoglobulin-Secreting,Cells, Antibody-Producing,Cells, Antibody-Secreting,Cells, Immunoglobulin-Producing,Cells, Immunoglobulin-Secreting,Immunoglobulin Producing Cells,Immunoglobulin Secreting Cells,Immunoglobulin-Producing Cell,Immunoglobulin-Secreting Cell
D001428	Bacterial Vaccines	Suspensions of attenuated or killed bacteria administered for the prevention or treatment of infectious bacterial disease.	Bacterial Vaccine,Bacterin,Vaccine, Bacterial,Vaccines, Bacterial
D013296	Streptococcus pneumoniae	A gram-positive organism found in the upper respiratory tract, inflammatory exudates, and various body fluids of normal and/or diseased humans and, rarely, domestic animals.	Diplococcus pneumoniae,Pneumococcus