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Infect. Immun., 03 1997, 877-881, Vol 65, No. 3
RF Kornelisse, CE Hack, HF Savelkoul, TC van der Pouw Kraan, WC Hop, G van Mierlo, MH Suur, HJ Neijens and R de Groot
To assess the role of interleukin-12 (IL-12) and gamma interferon (IFN-
gamma) in children with bacterial meningitis, bioactive IL-12 (p70) and the
inactive subunit p40 and IFN-gamma were measured in serum and cerebrospinal
fluid (CSF) from 35 children with bacterial meningitis and 10 control
subjects. The production of IFN-gamma is induced by IL- 12 with tumor
necrosis factor alpha (TNF-alpha) as a costimulator and inhibited by IL-10.
CSF concentrations of IL-12 p40 as well as those of IFN-gamma were markedly
elevated, whereas IL-12 p70 was hardly detectable. Detectable CSF levels of
IFN-gamma correlated positively with IL-12 p40 (r = 0.40, P = 0.02) and
TNF-alpha (r = 0.46, P = 0.04) but not with IL-6, IL-8, or IL-10. In
contrast to CSF levels of TNF- alpha, IL-12, and IL-10, those of IFN-gamma
were significantly higher in patients with pneumococcal meningitis than in
children with meningitis caused by Haemophilus influenzae and Neisseria
meningitidis, presumably because of a high CSF TNF-alpha/IL-10 ratio in the
former. We suggest that IL-12- and TNF-alpha-induced IFN-gamma production
may contribute to the natural immunity against microorganisms in the CSF
compartment during the acute phase of bacterial meningitis.
Copyright © 1997, American Society for Microbiology
Intrathecal production of interleukin-12 and gamma interferon in patients with bacterial meningitis
Department of Pediatrics of Sophia Children's Hospital/University Hospital, Erasmus University Rotterdam, The Netherlands.
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