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Chepkwony M, Wragg D, Latré de Laté P, Paxton E, Cook E, Ndambuki G, Kitala P, Gathura P, Toye P, Prendergast J. Longitudinal transcriptome analysis of cattle infected with Theileria parva. Int J Parasitol 2022; 52:799-813. [PMID: 36244429 DOI: 10.1016/j.ijpara.2022.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 07/01/2022] [Accepted: 07/14/2022] [Indexed: 11/05/2022]
Abstract
The apicomplexan cattle parasite Theileria parva is a major barrier to improving the livelihoods of smallholder farmers in Africa, killing over one million cattle on the continent each year. Although exotic breeds not native to Africa are highly susceptible to the disease, previous studies have illustrated that such breeds often show innate tolerance to infection by the parasite. The mechanisms underlying this tolerance remain largely unclear. To better understand the host response to T. parva infection we characterised the transcriptional response over 15 days in tolerant and susceptible cattle (n = 29) naturally exposed to the parasite. We identify key genes and pathways activated in response to infection as well as, importantly, several genes differentially expressed between the animals that ultimately survived or succumbed to infection. These include genes linked to key cell proliferation and infection pathways. Furthermore, we identify response expression quantitative trait loci containing genetic variants whose impact on the expression level of nearby genes changes in response to the infection. These therefore provide an indication of the genetic basis of differential host responses. Together these results provide a comprehensive analysis of the host transcriptional response to this under-studied pathogen, providing clues as to the mechanisms underlying natural tolerance to the disease.
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Affiliation(s)
- M Chepkwony
- Centre for Tropical Livestock Genetics and Health (CTLGH), ILRI Kenya, P.O. Box 30709, Nairobi 00100, Kenya
| | - D Wragg
- Centre for Tropical Livestock Genetics and Health (CTLGH), Easter Bush Campus, EH25 9RG, UK
| | - P Latré de Laté
- Centre for Tropical Livestock Genetics and Health (CTLGH), ILRI Kenya, P.O. Box 30709, Nairobi 00100, Kenya
| | - E Paxton
- Centre for Tropical Livestock Genetics and Health (CTLGH), Easter Bush Campus, EH25 9RG, UK
| | - E Cook
- Centre for Tropical Livestock Genetics and Health (CTLGH), ILRI Kenya, P.O. Box 30709, Nairobi 00100, Kenya
| | - G Ndambuki
- Centre for Tropical Livestock Genetics and Health (CTLGH), ILRI Kenya, P.O. Box 30709, Nairobi 00100, Kenya
| | - P Kitala
- College of Agriculture and Veterinary Sciences (CAVS), University of Nairobi, P.O. Box 29053-00624, Kangemi, Nairobi, Kenya
| | - P Gathura
- College of Agriculture and Veterinary Sciences (CAVS), University of Nairobi, P.O. Box 29053-00624, Kangemi, Nairobi, Kenya
| | - P Toye
- Centre for Tropical Livestock Genetics and Health (CTLGH), ILRI Kenya, P.O. Box 30709, Nairobi 00100, Kenya.
| | - J Prendergast
- Centre for Tropical Livestock Genetics and Health (CTLGH), Easter Bush Campus, EH25 9RG, UK.
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Kamiya M, Sato H, Kitaoka M, Ishiwata K, Oku Y, Ito M, Gathura P. Laboratory rodent models for the tapeworm-stage of Taenia saginata and other related taeniid species. Southeast Asian J Trop Med Public Health 1991; 22 Suppl:262-7. [PMID: 1822901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Attempts were carried out to establish alternative definitive host systems for Taenia saginata, T. crassiceps, T. hydatigena, Echinococcus multilocularis and E. granulosus, in rodents. Following oral inoculation of cysticerci or protoscoleces, the tapeworm-stage development and sexual maturation of the 5 taeniid species in the intestine of a golden hamster (GH) and Mongolian gerbil (MG), both treated with prednisolone, were examined. Sexually mature T. saginata tapeworms were recovered from MG pretreated with prednisolone. The life cycles of E. multilocularis can be completed in MG and T. crassiceps in both MG and GH. T. hydatigena and E. granulosus developed to a certain extent at the tapeworm stage in MG pretreated with prednisolone. Potential use of rodents as an alternative definitive host for taeniid species is discussed.
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Affiliation(s)
- M Kamiya
- Department of Parasitology, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
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