Abstract
Polyether ionophores are widely used to treat and control coccidiosis in chickens. Widespread use of anticoccidials resulted in worldwide resistance. Mechanisms of resistance development and expansion are complex and poorly understood. Relative proteomic quantification using LC-MS/MS was used to compare sensitive reference strains (Ref-1, Ref-2) with putatively resistant and moderately sensitive field strains (FS-R, FS-mS) of Eimeria tenella after isotopic labelling with tandem mass tags (TMT). Ninety-seven proteins were identified, and 25 of them were regulated. Actin was significantly upregulated in resistant strains in comparison with their sensitive counterparts. On the other hand, microneme protein (MIC4) was downregulated in resistant strains. Optimization of labelling E. tenella sporozoites by TMT might identify further proteins that play a role in the obvious complex mechanism leading to resistance against Monensin.
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Acknowledgments
The authors would like to thank Helmholz Centre for Environmental Research (UFZ), particularly Prof. Martin von Bergen, Dr. Sven Baumann, and Johannes Schmidt for their technical support and advice. We thank also Prof. Damer Blake (The Royal Veterinary Colleges; University of London) and Dr. Alberta Lorraine Fuller (College of Agricultural and Environmental Science, The University of Georgia) for providing reference and field E. tenella strains. We would like to thank DAAD (German Academic Exchange Service) for supporting Ahmed Thabet.
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Thabet, A., Honscha, W., Daugschies, A. et al. Quantitative proteomic studies in resistance mechanisms of Eimeria tenella against polyether ionophores. Parasitol Res 116, 1553–1559 (2017). https://doi.org/10.1007/s00436-017-5432-z
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DOI: https://doi.org/10.1007/s00436-017-5432-z