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TNF, IL-1 and IL-6 in circulating blood after total-body and localized irradiation in rats
J Haveman1, A G Geerdink, H M Rodermond
1Academic Medical Center, University of Amsterdam, Department of Radiotherapy, P.O. Box 22700, Amsterdam, 1100 DE, The Netherlands.
The levels of TNF, IL-1 and IL-6 in circulating blood of female WAG/Rij rats were assessed both after total-body irradiation (TBI) and localized irradiation of the right hind leg. The results show that enhanced levels of IL-1 in the circulation reflect a stress situation presumably resulting from handling and halothane anesthesia of the animal. Neither localized irradiation nor TBI resulted in further enhanced levels of IL-1. Both TBI and localized irradiation, lead to a small but significant increase in IL-6 levels in serum from circulating blood. After TBI this increase dissipated rapidly, 24 h after TBI increased levels are not found. After localized irradiation IL-6 levels remain elevated for a longer period. Still two weeks after irradiation, the longest time investigated, increased levels were observed. We did not observe increased TNF levels after localized irradiation or after TBI.
The levels of TNF, IL-1 and IL-6 in circulating blood of female WAG/Rij rats were assessed both after total-body irradiation (TBI) and localized irradiation of the right hind leg. The results show that enhanced levels of IL-1 in the circulation reflect a stress situation presumably resulting from handling and halothane anesthesia of the animal. Neither localized irradiation nor TBI resulted in further enhanced levels of IL-1. Both TBI and localized irradiation, lead to a small but significant increase in IL-6 levels in serum from circulating blood. After TBI this increase dissipated rapidly, 24 h after TBI increased levels are not found. After localized irradiation IL-6 levels remain elevated for a longer period. Still two weeks after irradiation, the longest time investigated, increased levels were observed. We did not observe increased TNF levels after localized irradiation or after TBI.