Immunology of interactions between ticks and laboratory animals
- PMID: 2667919
- DOI: 10.1007/BF01200448
Immunology of interactions between ticks and laboratory animals
Abstract
There is good reason to believe that the resistance to ixodid ticks acquired by guinea pigs, rabbits and mice is immunologically mediated. One proposed mechanism for this resistance, which may well be common to all these laboratory animals, involves cutaneous hypersensitivity reactions. Basophils accumulate at tick attachment sites in the skin of resistant animals and degranulate in response to tick salivary antigens, releasing histamine and other mediators. The mediators may directly cause ticks to cease salivating and feeding and then to detach, or they may induce reflex grooming reactions by the host, leading to the removal of ticks from the itching skin. There are gaps in the evidence supporting this hypothesis, and it is likely that other modes of tick resistance remain to be described. However, it should be recognized that, although there have been a few details added to the story in the last fifty years, William Trager's original classic observations and conclusions still stand as the core of the current dogma.
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