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Gene expression profiling as a tool for understanding the host response to cattle ticks

Emily K Piper, Nicholas N Jonsson, Constantin Constantinoiu, Cedric Gondro, Ala E Lew-Tabor, Megan E Vance, Louise A Jackson

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The cattle tick, 'Rhipicephalus Boophilus microplus' (formerly 'Boophilus microplus'), is the most significant parasite of cattle in Australia and threatens cattle production in tropical and subtropical countries worldwide. Some cattle breeds of mainly 'Bos indicus' origin develop a strong resistance to infestation with 'R. B. microplus', while other breeds of mainly 'Bos taurus' origin will succumb to anaemia and 'tick worry' in tick-infested pastures. Composite cattle ('B. indicus' x 'B. taurus') can have very wide ranges of tick resistance (Utech et al., 1978). Resistance to cattle tick infestation is primarily manifest against the larval stage and results in the immature tick failing to make a successful attachment and obtain a meal (Seifert, 1971). It is widely accepted that resistance to tick infestation in cattle is immunologically mediated and involves both cell-mediated and humoral immune responses. Previous research has demonstrated a role for the hypersensitivity response in the rejection of larvae from resistant 'B. taurus' cattle. Gene expression profiling using microarrays and quantitative PCR (qPCR) are popular tools to complement more classical measurements of immune reactivity and function. The immune response to 'R. B. microplus' infestation in 'B. indicus' and 'B. indicus' x 'B. taurus' cattle has not been studied in great detail. Using a combination of gene expression tools, together with measurements of immune system function such as histology and ELISA, we aimed to describe those responses of highly tick-resistant cattle that differ from those of tick-susceptible cattle.
Original languageEnglish
Title of host publicationProceedings of Advances in the Knowledge of Parasite Resistance of Ruminant Hosts and Parasites
EditorsLuciana Correia de Almeida Regitano, Simone Cristina Meo Niciura, Ana Carolina de Souza Chagas, Marcia Cristina de Sena Oliveira, Marcelo Beltrao Molento, Mauricio de Alvarenga Mudadu, Luiz Lehmann Coutinho, Alessandro Francisco Talamini do Amarante
Place of PublicationSao Carlos, Brazil
PublisherEmbrapa Southeastern Region Animal Husbandry
Pages30-33
ISBN (Print)9788586764233
Publication statusPublished - 2011
EventAdvances in the Knowledge of Parasite Resistance of Ruminant Hosts and Parasites - Sao Carlos, Brazil
Duration: 26 Sept 20117 Oct 2011

Conference

ConferenceAdvances in the Knowledge of Parasite Resistance of Ruminant Hosts and Parasites
CitySao Carlos, Brazil
Period26/09/117/10/11

Keywords

  • Gene Expression (incl Microarray and other genome-wide approaches)

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