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- W2000992210 abstract "In the present study, we examined the effects of various doses of recombinant human interleukin-1β on anxiety-like behaviour, on body temperature, and on behavioural changes typical of sick animals. First, we assessed the behaviour of rats in the elevated plus-maze before and 20 min after intracerebroventricular injection of IL-1 at six doses ranging from 0.001 to 100 ng. After treatment with 0.1 and 100 ng IL-1, animals exhibited different anxiety levels. The dose effect on behavioural performance in the plus-maze appears to be nonlinear (parabolic function), with the highest effects near a 0.1-ng dose and the lowest near doses of 0.0 and 100 ng. In a second set of experiments, we examined the effects of doses of 0.1 and 100 ng IL-1 (which had the most pronounced effects on performance in the plus-maze) on physical parameters over a 24-h period. Using radiotelemetry we measured body temperature, locomotor activity, food intake, and water consumption: a) in animals kept under basal resting conditions, and b) in animals exposed to a novel environment prior to administration of IL-1. Both doses evoked a fever response and reduced locomotor activity, but the increase in body temperature did not correlate with the decrease in locomotor activity and both effects did not occur at the time of behavioural testing. Taken together, our data indicate that central administration of IL-1 has anxiolytic-like properties." @default.
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- W2000992210 date "1997-10-01" @default.
- W2000992210 modified "2023-09-27" @default.
- W2000992210 title "Central Administration of IL-1 Reduces Anxiety and Induces Sickness Behaviour in Rats" @default.
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- W2000992210 doi "https://doi.org/10.1016/s0091-3057(97)00244-x" @default.
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