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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Compromised neuroimmune status in rats with experimental colitis.

In colitis, chronic and recurrent inflammation is associated with a breakdown in host defence mechanisms that leads to local and systemic infection. Whether this is due to a compromised neuroimmune response has not been studied. Our aim was to determine if colitis altered the host neuroimmune response as reflected in either body temperature rhythm or the febrile responses to lipopolysaccharide (LPS). Body temperature was monitored by telemetry from conscious, unrestrained male rats treated with trinitrobenzene sulphonic acid or saline. Twenty-six days after initial induction, colitis was reactivated. Animals were given LPS (50 microg kg-1 Escherichia coli LPS) during colitis and after reactivation. At the peak of colitis, treated rats showed a disruption of circadian body temperature rhythm, manifested as day-time fever followed by night-time hypothermia. In response to LPS, controls displayed a characteristic fever, whereas treated animals had a significantly reduced fever and low plasma levels of interleukin-6 (IL-6) and tumour necrosis factor-alpha (TNF-alpha). During reactivation of colitis, treated animals did not mount a fever or exhibit increased plasma levels of IL-6 and TNF-alpha after LPS. We conclude that experimental colitis is associated with a compromised neuroimmune status.[1]


  1. Compromised neuroimmune status in rats with experimental colitis. Boissé, L., Van Sickle, M.D., Sharkey, K.A., Pittman, Q.J. J. Physiol. (Lond.) (2003) [Pubmed]
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