|
1
|
Lakew BT, Eastwood S, Walkden-Brown SW. Epidemiology and Transmission of Theileria orientalis in Australasia. Pathogens 2023; 12:1187. [PMID: 37887703 PMCID: PMC10610506 DOI: 10.3390/pathogens12101187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 09/19/2023] [Accepted: 09/19/2023] [Indexed: 10/28/2023] Open
Abstract
Oriental theileriosis, a disease primarily impacting cattle is caused by an apicomplexan hemoprotozoan parasite, Theileria orientalis. It has now become established in the Australasia region. The organism was long considered a benign cause of persistent infections; however, an increase in clinical outbreaks since 2006 in the eastern Australian states and New Zealand was associated with the identification of the pathogenic Ikeda (Type 2) and Chitose (Type 1) genotypes. Unlike the pathogenic T. parva and T. annulate, which target leucocytes, clinical manifestation with T. orientalis is due to its effects on erythrocytes, with the infection sometimes designated as Theileria associated bovine anemia (TABA). In Australia and New Zealand, the tick Haemaphysalis longicornis is the principal vector, though other Haemaphysalis species are also likely vectors. The endemic status of infection with pathogenic genotypes in areas with low or absent tick populations is an apparent paradox that may be attributable to alternative modes of transmission, such as mechanical transmission by hematophagous insects (lice, mosquitoes, and biting flies), vertical transmission, and transmission via iatrogenic means. This review addresses the evidence for the different modes of transmission of T. orientalis with particular focus on the reported and potential vectors in Australasia.
Collapse
Affiliation(s)
- Biniam T. Lakew
- Animal Science, School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia;
- College of Veterinary Medicine, Haramaya University, Dire Dawa P.O. Box 138, Ethiopia
| | - Steve Eastwood
- NSW Department of Primary Industries, Armidale, NSW 2350, Australia;
| | - Stephen W. Walkden-Brown
- Animal Science, School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia;
| |
Collapse
|
|
2
|
Ozubek S, Ulucesme MC, Cirak VY, Aktas M. Detection of Theileria orientalis Genotypes from Cattle in Kyrgyzstan. Pathogens 2022; 11:pathogens11101185. [PMID: 36297242 PMCID: PMC9606894 DOI: 10.3390/pathogens11101185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/11/2022] [Accepted: 10/13/2022] [Indexed: 11/28/2022] Open
Abstract
The ikeda and chitose genotypes of Theileria orientalis, which for many years were thought to be benign, cause a disease that results in significant economic losses in the cattle industry. This study was carried out in order to determine the genotypes of T. orientalis in cattle in Kyrgyzstan, and 149 archived DNA samples known to be T. orientalis were analyzed by the PCR amplification of the major piroplasm surface protein (MPSP) gene region. Single-Strand Conformation Polymorphism (SSCP) analysis was performed to uncover the nucleotide changes in the archived DNA samples, and 15 samples showing different band profiles were subjected to sequence analysis. As a result of the sequence analysis, it was seen that the samples belonged to the buffeli and chitose A genotypes. In order to identify mixed genotypes, PCR was performed using primers specific for these genotypes, and buffeli (type 3), chitose (type 1) and buffeli+chitose were found to be positive in 26.2%, 2% and 71.8% of samples, respectively. As a result of this study, we showed the presence of buffeli (type 3) and chitose (type 1) genotypes of T. orientalis in cattle in Kyrgyzstan. Comprehensive epidemiological studies are needed to understand the clinical infections caused by the pathogenic chitose A and to determine the geographical distribution and different genotypes of T. orientalis.
Collapse
Affiliation(s)
- Sezayi Ozubek
- Department of Parasitology, Faculty of Veterinary Medicine, University of Firat, Elazig 23119, Turkiye
- Correspondence:
| | - Mehmet Can Ulucesme
- Department of Parasitology, Faculty of Veterinary Medicine, University of Firat, Elazig 23119, Turkiye
| | - Veli Yılgor Cirak
- Department of Parasitology, Faculty of Veterinary Medicine, Bursa Uludag University, Bursa 23119, Turkiye
| | - Munir Aktas
- Department of Parasitology, Faculty of Veterinary Medicine, University of Firat, Elazig 23119, Turkiye
| |
Collapse
|
|
3
|
Prado ICB, Capuno LXB, Collera PDLP, Cabralda APD, De Ramos KAS, Bernardo JMG, Divina BP, Masatani T, Tanaka T, Galay RL. Molecular Detection and Characterization of Babesia and Theileria in Cattle and Water Buffaloes from Southern Luzon, Philippines. Microorganisms 2022; 10:microorganisms10040678. [PMID: 35456730 PMCID: PMC9025510 DOI: 10.3390/microorganisms10040678] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/18/2022] [Accepted: 03/20/2022] [Indexed: 11/21/2022] Open
Abstract
Babesia and Theileria are tick-borne protozoan parasites that can cause significant economic losses in the cattle industry. This study aimed to contribute to the limited epidemiological data on Theileria orientalis as well as Babesia bigemina and B. bovis in large ruminants in the Philippines. Blood samples of 412 cattle and 108 water buffalo collected from four provinces in Southern Luzon, Philippines, were initially tested for the 18S rRNA gene of piroplasms through nested PCR. Positive samples were further subjected to species-specific PCR. The 18s rRNA of piroplasms was detected in 123 (29.9%) cattle and three (2.8%) water buffaloes. Theileria orientalis was found to be the most common piroplasm in cattle with a detection rate of 17.5%, followed by Babesia bovis and B. bigemina. Co-infections were also observed. Two water buffaloes were found infected with B. bovis, while one was positive for B. bigemina. The phylogenetic tree for B. bovis showed clustering of the isolates in two clades together with isolates from other countries, and a third separate clade. Meanwhile, the T. orientalis isolates in this study were distributed in three clades together with reported isolates from other countries. This study confirms the presence of T. orientalis in the Philippines and reports the genetic diversity of B. bovis and T. orientalis.
Collapse
Affiliation(s)
- Ian Cary B. Prado
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of the Philippines Los Baños, Laguna 4031, Philippines;
| | - Larry Xerxes B. Capuno
- Department of Veterinary Paraclinical Sciences, College of Veterinary Medicine, University of the Philippines Los Baños, Laguna 4031, Philippines; (L.X.B.C.J.); (P.D.C.); (A.P.D.C.); (K.A.S.D.R.); (J.M.G.B.); (B.P.D.)
| | - Princess DLP. Collera
- Department of Veterinary Paraclinical Sciences, College of Veterinary Medicine, University of the Philippines Los Baños, Laguna 4031, Philippines; (L.X.B.C.J.); (P.D.C.); (A.P.D.C.); (K.A.S.D.R.); (J.M.G.B.); (B.P.D.)
| | - Aaron Paul D. Cabralda
- Department of Veterinary Paraclinical Sciences, College of Veterinary Medicine, University of the Philippines Los Baños, Laguna 4031, Philippines; (L.X.B.C.J.); (P.D.C.); (A.P.D.C.); (K.A.S.D.R.); (J.M.G.B.); (B.P.D.)
| | - Kristina Andrea S. De Ramos
- Department of Veterinary Paraclinical Sciences, College of Veterinary Medicine, University of the Philippines Los Baños, Laguna 4031, Philippines; (L.X.B.C.J.); (P.D.C.); (A.P.D.C.); (K.A.S.D.R.); (J.M.G.B.); (B.P.D.)
| | - John Michael G. Bernardo
- Department of Veterinary Paraclinical Sciences, College of Veterinary Medicine, University of the Philippines Los Baños, Laguna 4031, Philippines; (L.X.B.C.J.); (P.D.C.); (A.P.D.C.); (K.A.S.D.R.); (J.M.G.B.); (B.P.D.)
| | - Billy P. Divina
- Department of Veterinary Paraclinical Sciences, College of Veterinary Medicine, University of the Philippines Los Baños, Laguna 4031, Philippines; (L.X.B.C.J.); (P.D.C.); (A.P.D.C.); (K.A.S.D.R.); (J.M.G.B.); (B.P.D.)
| | - Tatsunori Masatani
- Laboratory of Zoonotic Diseases, Faculty of Applied Biological Sciences, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan;
| | - Tetsuya Tanaka
- Laboratory of Infectious Diseases, Joint Faculty of Veterinary Medicine, Kagoshima University, Korimoto 1-21-24, Kagoshima 890-0065, Japan
- Correspondence: (T.T.); (R.L.G.); Tel.: +81-99-285-3570 (T.T.); +63-049-536-2728 (R.L.G.)
| | - Remil L. Galay
- Department of Veterinary Paraclinical Sciences, College of Veterinary Medicine, University of the Philippines Los Baños, Laguna 4031, Philippines; (L.X.B.C.J.); (P.D.C.); (A.P.D.C.); (K.A.S.D.R.); (J.M.G.B.); (B.P.D.)
- Correspondence: (T.T.); (R.L.G.); Tel.: +81-99-285-3570 (T.T.); +63-049-536-2728 (R.L.G.)
| |
Collapse
|