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. 1991 Dec;59(12):4636–4640. doi: 10.1128/iai.59.12.4636-4640.1991

Immunopathology of experimental African sleeping sickness: detection of cytokine mRNA in the brains of Trypanosoma brucei brucei-infected mice.

C A Hunter 1, J W Gow 1, P G Kennedy 1, F W Jennings 1, M Murray 1
PMCID: PMC259089  PMID: 1718878

Abstract

The immunopathology of Trypanosoma brucei brucei in the central nervous system was studied by using an experimental model of chronic meningoencephalitis in outbred CD-1 mice. Mice infected with T. b. brucei were treated with a subcurative dose of the trypanocidal compound diaminazine aceturate. These mice relapsed and were again drug treated. The brains were examined histologically and by immunocytochemistry to identify activated astrocytes. The polymerase chain reaction was used to detect cytokine RNA transcripts. The infected and treated animals developed severe chronic meningoencephalitis characterized by large numbers of inflammatory cells and widespread astrocyte proliferation. In uninfected controls, only interleukin 1 and beta-actin RNA transcripts were detected while transcripts for beta-actin, tumor necrosis factor alpha, macrophage inflammatory protein 1 and interleukins 1 and 4 were demonstrated in the brains of infected animals. Gamma interferon and interleukin 6 were also detected in a few of the infected animals, but interleukin 2 was not found in any of these animals.

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