Comparison of cutaneous hyperemia in cattle elicited by larvae ofBoophilus microplus and by prostaglandins and other mediators |
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| Authors: | Kemp D. H. Hales J. R. S. Schleger A. V. Fawcett A. A. |
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| Affiliation: | (1) Division of Tropical Animal Science, Long Pocket Laboratories, CSIRO, Private Bag No. 3, P.O., 4068 Indooroopilly, Queensland, (Australia);(2) Division of Animal Production, Ian Clunies Ross Animal Research Laboratory, CSIRO, P. O. Box 239, 2148 Blacktown, N.S.W., (Australia) |
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| Abstract: | Summary Blood flow has been measured in bovine skin following the injection of tick antigens and a number of pharmacological mediators; including histamine, prostaglandins and slow reacting substance of anaphylaxis. The greates increase in blood flow (20 times normal) was recorded with tick antigens and with prostaglandin F2. This mediator may therefore influence blood flow during immune reactions to ticks and during the rapid ingestion of blood by the ticks.Acknowledgments. This work was supported by the Australian Meat Research Committee. We would like to thank J. M. Gough for her technical assistance. |
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