Journal
PARASITE IMMUNOLOGY
Volume 43, Issue 5, Pages -Publisher
WILEY
DOI: 10.1111/pim.12830
Keywords
antioxidants; haematophagy; rickettsiae; tick‐ borne disease; ticks
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Ticks are hematophagous arthropods that digest host blood meal with unique molecular mechanisms while acting as vectors for various pathogens. The pharmacologically active saliva of ticks plays a crucial role in modulating the host's immune system for several days to weeks, depending on the tick species. Understanding the interactions between ticks, rickettsiae, and hosts is essential for preventing tick-borne diseases.
Ticks are haematophagous arthropods with unique molecular mechanisms for digesting host blood meal while acting as vectors for various pathogens of public health significance. The tick's pharmacologically active saliva plays a fundamental role in modulating the host's immune system for several days to weeks, depending on the tick species. The vector tick has also developed sophisticated molecular mechanisms to serve as a competent vector for pathogens, including the spotted fever group (SFG) rickettsiae. Evidence is still inadequate concerning tick-rickettsiae-host interactions and saliva-assisted transmission of the pathogen to the mammalian host. Rickettsia parkeri, of the SFG rickettsia, can cause a milder version of Rocky Mountain spotted fever known as American Boutonneuse fever. The Gulf Coast tick (Amblyomma maculatum) often transmits this pathogenic rickettsia in the USA. This review discusses the knowledge gap concerning tick-rickettsiae-host interactions by highlighting the SFG rickettsia and the Am maculatum model system. Filling this knowledge gap will provide a better understanding of the tick-rickettsiae-host interactions in disease causation, which will be crucial for developing effective methods for preventing tick-borne diseases.
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