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- Title
Immunological properties of meningococcal lipopohsaccharide from serogroups A, B & C.
- Authors
JENSEN, THOMAS JON; KHARAZMI, ARSALAN; SHAND, GEOFFREY; NIELSEN, HENRIK; TVEDE, MICHAEL
- Abstract
The aim of the study was to measure and compare the oxidative burst, chemotaxis and cytokine production of human white blood cells, stimulated with meningococcal lipopolysaccharides (LPS) extracted from three different serogroups (A, B and C) of Neisseria meningitidis, and to evaluate whether convalescent sera from patients with meningococcal disease could modify cell stimulation of LPS. All three preparations of LPS from groups A, B and C were tested using the Limulus amoebocyte lysate assay (LAL), and the KDO concentrations of the LPS extracts were measured. Equivalent amounts of biologically active LPS, judged by LAL, and LPS with the same KDO concentration were assayed. IL-1α, IL-1β, 1L-6 and TNF-α production was stimulated by all three LPS preparations. All three preparations stimulated oxidative burst in monocytes (MNC). Only group A LPS stimulated neutrophil chemotaxis, while none of the three LPS stimulated superoxide production. Pooled convalescent sera from five patients with meningococcal disease suppressed the activity of neutrophils stimulated with LPS from groups B and C (p<0.05, Mann-Whitney U-test).
- Publication
APMIS, 1996, Vol 104, Issue 1-6, p54
- ISSN
0903-4641
- Publication type
Article
- DOI
10.1111/j.1699-0463.1996.tb00686.x