Meningococcal serogroup C polysaccharide specific memory B cells, directly enumerated by labeled polysaccharide, are not affected by age at vaccination. 2010

Maren Henneken, and Nicolas Burdin, and Einar Thoroddsen, and Sigurveig Th Sigurdardottir, and Emanuelle Trannoy, and Ingileif Jonsdottir
Department of Immunology, Landspitali-University Hospital, Reykjavik, Iceland.

The influence of age on the generation and persistence of specific memory B cells after vaccination with Neisseria meningitidis type C polysaccharide (MenC-PS) conjugate is unknown. MenC-PS-specific B cells could be directly enumerated by fluorochrome-labeled MenC-PS and flow cytometry in blood up to at least 4 years after vaccination, ranging from 0.01% to 0.78% of total B cells and did not correlate with age at vaccination. The percentage of MenC-specific memory B cells out of total memory B cells correlated with total MenC-specific B-cells and with frequencies of IgA(+) plus IgG(+) MenC-specific AbSC, but not with MenC-specific Ab.

UI MeSH Term Description Entries
D007156 Immunologic Memory The altered state of immunologic responsiveness resulting from initial contact with antigen, which enables the individual to produce antibodies more rapidly and in greater quantity in response to secondary antigenic stimulus. Immune Memory,Immunological Memory,Memory, Immunologic,Immune Memories,Immunologic Memories,Immunological Memories,Memory, Immune,Memory, Immunological
D007223 Infant A child between 1 and 23 months of age. Infants
D007963 Leukocytes, Mononuclear Mature LYMPHOCYTES and MONOCYTES transported by the blood to the body's extravascular space. They are morphologically distinguishable from mature granulocytic leukocytes by their large, non-lobed nuclei and lack of coarse, heavily stained cytoplasmic granules. Mononuclear Leukocyte,Mononuclear Leukocytes,PBMC Peripheral Blood Mononuclear Cells,Peripheral Blood Human Mononuclear Cells,Peripheral Blood Mononuclear Cell,Peripheral Blood Mononuclear Cells,Leukocyte, Mononuclear
D008297 Male Males
D008589 Meningococcal Infections Infections with bacteria of the species NEISSERIA MENINGITIDIS. Meningococcal Septicemia,Infections, Meningococcal,Meningococcal Disease,Infection, Meningococcal,Meningococcal Diseases,Meningococcal Infection,Septicemia, Meningococcal
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D011135 Polysaccharides, Bacterial Polysaccharides found in bacteria and in capsules thereof. Bacterial Polysaccharides
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D002675 Child, Preschool A child between the ages of 2 and 5. Children, Preschool,Preschool Child,Preschool Children
D005260 Female Females

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