Molecular phylogenetic study of Theileria sp. (Thung Song) based on the thymidylate synthetase gene

Chansiri, Kosum; Sarataphan, Nopporn

doi:10.1007/s00436-001-0567-2

Cited by 7 publications

(4 citation statements)

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“…Theileria sergenti has been found to be associated with the infection of cattle in East Asia (Kubota et al, 1996;Choi et al, 1997), Southern Asia (Wang et al, 1998;Chansiri and Sarataphan, 2002) and Europe (Savini et al, 1999). Generally, the diagnosis of the T. sergenti infection is determined by detecting T. sergenti parasites in Giemsa-stained thin blood smear films by light microscopy.…”

Section: Introductionmentioning

confidence: 99%

Prevalence of Theileria sergenti infection in Korean native cattle by polymerase chain reaction

Song

Sang

2003

Korean J Parasitol

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Abstract:This study was performed to investigate the prevalence of theileriosis and to compare the prevalence of this disease in Korean native cattle reared under different environmental conditions, namely, in a grazing area and a non-grazing area by polymerase chain reaction. Three hundred and one Korean native cattle (276 cows and 25 bulls) that had not received prior treatment or been vaccinated to prevent theileriosis were examined by PCR for Theileria sergenti infection from 2001 to 2002. In our study, the parasitemia range in T. sergenti-positive cattle by microscopy were from 0.1 to 3% (mean 0.8%). In terms of mean prevalence, 204 of the 301 Korean native cattle (67.8%) were positive reaction by PCR. Our results also revealed that the infection rate among cows (70.3%) was significantly higher than that among bulls (40.0%) (p < 0.01). T. sergenti infection among the over 3 year-old-group (75%) had a significant higher prevalence than that among the less than 3 year-old-group (61.8%) (p < 0.05). Our data also showed that grazing areas (76.1%) had the significant higher prevalence than non-grazing areas (51%) (p < 0.001).In conclusion, this study demonstrates that the prevalence of T. sergenti infection is high and that its prevalence in grazing cattle is higher than that in non-grazing cattle. Therefore, life-long treatment and the development of an optimal vaccine are needed to reduce the numbers of bovine theileriosis in both grazing and non-grazing areas.

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Section: Introductionmentioning

confidence: 99%

Prevalence of Theileria sergenti infection in Korean native cattle by polymerase chain reaction

Song

Sang

2003

Korean J Parasitol

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“…Theileria sp. Thung Song is an isolate from dairy cattle in Thailand and was genotypically divergent from other benign T. orientalis types ( T. buffeli and T. sergenti ) [ 51 , 52 ]. Its detection in goats in the current study may indicate host shifting of this parasite.…”

Section: Discussionmentioning

confidence: 99%

First Molecular Identification of Babesia, Theileria, and Anaplasma in Goats from the Philippines

et al. 2022

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Goats are key livestock animals and goat raising is an income-generating venture for smallholder farmers, supporting agricultural development in many parts of the world. However, goat production is often limited by various factors, such as tick-borne diseases. Goat piroplasmosis is a disease caused by apicomplexan parasites Babesia spp. and Theileria spp., while anaplasmosis is caused by bacterial Anaplasma spp. In the Philippines, the presence of Babesia, Theileria, and Anaplasma has not been reported in goats. In this study, DNA obtained from goats were molecularly screened for Babesia/Theileria and Anaplasma. Of 396, 77.02% (305/396) and 38.64% (153/396) were positive for piroplasma and Anaplasma using PCR assays targeting the 18S rRNA and 16S rRNA genes, respectively. Similarly, Babesia ovis was detected in six samples (1.52%). Representative Babesia/Theileria sequences shared 89.97–97.74% identity with each other and were most closely related to T. orientalis, T. annulata, and Theileria spp. Meanwhile, Anaplasma 16SrRNA sequences were related to A. odocoilei, A. platys, and A. phagocytophilum. This is the first molecular identification of B. ovis, Theileria spp., and Anaplasma spp. in goats from the Philippines.

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“…His group used the thymidylate synthetase gene (TS) for the phylogentic analysis of Theileria sp. (type Thung Song), T. buffeli and Theileria sergenti and found that the latter two parasites are closely related and that Theileria type Thung Song is distantly related to them (Chansiri and Nopporn 2002). Pylogentic analysis of all Theileria 18S ribosomal RNA genes allowed for a subdivsion into eight clusters.…”

Section: Diagnosis Identification and Discriminationmentioning

confidence: 98%

Ticks and tick-borne diseases in Asia with special emphasis on China

et al. 2002

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An international conference on the control of ticks and tick-borne diseases sponsored by the European Commission was held in Shanghai between 11 and 15 September 2000. Participants from China, Europe, Australia, India, Iran, Israel, Japan and Thailand attended the meeting. The main objectives were: (1) determining the current situation concerning the epidemiology, economics, diagnosis and integrated control measures of ticks and tick-borne diseases caused by protozoan and rickettsial pathogens; (2) the creation of regional and international research networks and priority settings; (3) the creation of training possibilities for young scientists; (4) the identification of new research directions and priority settings in relation to vaccine development and diagnostics. The papers presented during this meeting focused on parasite characterisation and the description of yet unidentified Theileria and Babesia species pathogenic for large and small ruminants in China. In addition, progress made in immunity and vaccine development against the pathogens mentioned above and their vector ticks was also discussed.

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Molecular phylogenetic study of Theileria sp. (Thung Song) based on the thymidylate synthetase gene

Cited by 7 publications

References 4 publications

Prevalence of Theileria sergenti infection in Korean native cattle by polymerase chain reaction

Prevalence of Theileria sergenti infection in Korean native cattle by polymerase chain reaction

First Molecular Identification of Babesia, Theileria, and Anaplasma in Goats from the Philippines

Ticks and tick-borne diseases in Asia with special emphasis on China

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