babesia caballi
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2022 ◽  
Vol 11 (1) ◽  
pp. e15811124521
Author(s):  
Juliana Freitas de Abreu ◽  
Roberta de Araújo Silva ◽  
Murilo Moura Ferreira ◽  
Elem Cristina Macedo Barra ◽  
Cintia Luana Pinheiro Santos ◽  
...  

A piroplasmose equina é uma doença transmitida por carrapatos infectados pelos protozoários Babesia caballi e Theileria equi, conhecida, respectivamente, como Babesiose ou Theileriose. As manifestações clínicas variam desde febre, anemia, apatia, até quadros agudos que podem resultar em morte ou perdas reprodutivas em éguas. O objetivo deste estudo foi identificar as sequências de DNA de Babesia caballi através da técnica de PCR convencional e diagnosticar a ocorrência de piroplasmose equina. Foram coletados 2 mL de sangue de 50 fêmeas equinas das raças Brasileiro de Hipismo (BH), Sem Raça Definida (SRD) e Quarto de Milha (QM), de idades variadas, pertencentes à Haras localizados no nordeste do Brasil. Os animais foram divididos em 2 grupos, sendo 9 animais do grupo das doadoras e 41 animais no grupo das receptoras, o sangue foi enviado ao laboratório de biologia molecular para ser utilizado para detecção de Babesia spp. Das 50 fêmeas equinas testadas nenhuma foi positiva para o protozoário Babesia spp. Resultado do bom manejo sanitário e controle de ectoparasitas de éguas doadoras e receptoras de embriões.


2021 ◽  
Vol 9 (12) ◽  
pp. 2616
Author(s):  
Labrini V. Athanasiou ◽  
Eleni G. Katsogiannou ◽  
Constantina N. Tsokana ◽  
Sofia G. Boutsini ◽  
Marina G. Bisia ◽  
...  

Wild rabbits (Oryctolagus cuniculus) can be important sentinel species for the presence of zoonotic pathogens. Therefore, we collected blood samples from wild rabbits harvested by hunters during the hunting season 2019–2020 on the island of Lemnos, to determine exposure of wild rabbits to the zoonotic pathogens Leishmania infantum, Toxoplasma gondii, Anaplasma phagocytophilum and Babesia caballi, as well as aqueous humor to assess its diagnostic performance in terms of sensitivity, specificity, positive and negative likelihood ratios. Antibodies against these pathogens were detected by Indirect Immunofluorescence Antibody (IFA) assay. Out of the 72 wild rabbits included in the study, 4.2%, 5.5%, 18% and 9.7% were seropositive to L. infantum, T. gondii, A. phagocytophilum and B. caballi, respectively. Although less frequently, antibodies were also detected in aqueous humor of wild rabbits. The antibody detection in aqueous humor presented 100% specificity but decreased sensitivity compared to serum suggesting that aqueous humor could be successfully used in epidemiological studies to confirm exposure at the population level but has little diagnostic value at the individual level. This is the first report on the seropositivity of wild rabbits to A. phagocytophilum and B. caballi and the detection of antibodies against A. phagocytopylum, L. infantum, T. gondii and B. caballi in the aqueous humor.


Pathogens ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1414
Author(s):  
Bassma S. M. Elsawy ◽  
Ahmed M. Nassar ◽  
Heba F. Alzan ◽  
Raksha V. Bhoora ◽  
Sezayi Ozubek ◽  
...  

Equine Piroplasmosis (EP) is an infectious disease caused by the hemoprotozoan parasites Theileria equi, Babesia caballi, and the recently identified species T. haneyi. Hereby, we used a multiplex PCR (mPCR) targeting the 18S rRNA gene of T. equi and B. caballi for the simultaneous detection of EP in Egyptian equids and examined the presence of T. haneyi infections in Egypt. Blood samples from 155 equids (79 horses and 76 donkeys) collected from different governorates of Egypt were examined by mPCR and PCR targeting T. hayeni. The mPCR method revealed a prevalence of T. equi of 20.3% in horses and of 13.1% in donkeys and a prevalence of B. caballi of 1.2% in horses. B. caballi was not detected in donkeys in the current study. The mPCR method also detected coinfections with both species (2.5% and 1.3% in horses and donkeys, respectively). Additionally, we report the presence of T. haneyi in Egypt for the first time in 53.1% of the horse and 38.1% of the donkey tested samples. Coinfection with T. haneyi and T. equi was found in 13.5% of the samples, while infection with the three EP species was found in 1.9% of the samples.


Acta Tropica ◽  
2021 ◽  
Vol 221 ◽  
pp. 105993
Author(s):  
Tereza Bělková ◽  
Eva Bártová ◽  
Dagmar Řičařová ◽  
Petr Jahn ◽  
Vendula Jandová ◽  
...  

2021 ◽  
Author(s):  
Ahmed M. Soliman ◽  
Nagwa M. Elhawary ◽  
Nashwa M. Helmy ◽  
Sahar M. Gadelhaq

Abstract Equine piroplasmosis (EP) is an ixodid tick-borne disease caused by Theileria equi and/or Babesia caballi that can lead to severe health issues and economic losses among equine population. This study aimed to determine the prevalence of T. equi and B. caballi among Egyptian equines based on microscopy and conventional PCR. Also, to determine the effect of season, age, and sex of on their prevalence and determining the difference in sensitivity between microscopy and conventional PCR in the diagnosis of EP. This study was carried out on 432 blood samples randomly collected from 146 horses and 286 donkeys during a period from April 2016 to March 2018. Microscopic examination revealed that among horses, 13 (8.9%) and 4 (2.7%) were infected by T. equi and B. caballi respectively. While among donkeys, 22 (7.7%), 16 (5.6%) respectively. While mixed infections were detected in 4 (1.4%) donkeys. There was a statistically nonsignificant relation between prevalence of infection and season and sex of equines but the highest prevalence was recorded in age group less than 5 years old. By conventional PCR, among 64 horses, 15 (23.4%) and 8 (12.5%) were infected by T. equi and B. caballi, respectively. While among 76 donkeys, 36 (47.4%), 16 (21.1%), and 5 (6.6%) were infected by T. equi, B. caballi, and mixed infection, respectively. Our finding proved the existence of T. equi and B. caballi among equines.


Pathogens ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 714
Author(s):  
Reinaldo Torres ◽  
Claudio Hurtado ◽  
Sandra Pérez-Macchi ◽  
Pedro Bittencourt ◽  
Carla Freschi ◽  
...  

This study aimed to serologically and molecularly survey Babesia caballi and Theileria equi in thoroughbred horses from racecourses in Chile. Additionally, the genetic diversity of the positive samples was assessed. A total of 286 thoroughbred horses from the Santiago and Valparaíso racecourses had their serum samples submitted to an ELISA for B. caballi and T. equi, and 457 samples (from the Santiago, Valparaíso, and Concepción racecourses) were tested with nested PCRs for the B. caballi 48 KDa rhoptry protein (RAP-1) and T. equi 18S rRNA genes. Selected RAP-1 and 18S positive products were sequenced to perform phylogenetic and haplotype analyses. An overall seroprevalence of 35.6% was observed for these Chilean racecourses: 23.7% for T. equi, 8.4% for B. caballi, and 3.5% for both agents. Overall, a 53.6% occurrence by nPCR was detected for the three Chilean racecourses: 44.2% for T. equi, 5.4% for B. caballi, and 3.9% for both agents. Phylogenetic analysis of T. equi and B. caballi showed genetic proximity with sequences previously detected in other countries. Haplotype analysis revealed a low diversity among the Chilean sequences, which may have originated from those reported in Brazil, Israel, or Cuba. Babesia caballi and T. equi were detected for the first time in Chilean thoroughbred horses.


2021 ◽  
Vol 53 (3) ◽  
Author(s):  
Kamani Joshua ◽  
Bártová Eva ◽  
Kašpárková Nikola ◽  
Mohammed J. Samaila ◽  
Budíková Marie ◽  
...  

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Ahmet Efe Köseoğlu ◽  
Hüseyin Can ◽  
Mervenur Güvendi ◽  
Sedef Erkunt Alak ◽  
Çağrı Kandemir ◽  
...  

Abstract Background The emergence of tick-borne disease is increasing because of the effects of the temperature rise driven by global warming. In Turkey, 19 pathogens transmitted by ticks to humans and animals have been reported. Based on this, this study aimed to investigate tick-borne pathogens including Hepatozoon spp., Theileria spp., Babesia spp., Anaplasma spp., Borrelia spp., and Bartonella spp. in tick samples (n = 110) collected from different hosts (dogs, cats, cattle, goats, sheep, and turtles) by molecular methods. Methods To meet this objective, ticks were identified morphologically at the genus level by microscopy; after DNA isolation, each tick sample was identified at the species level using the molecular method. Involved pathogens were then investigated by PCR method. Results Seven different tick species were identified including Rhipicephalus sanguineus, R. turanicus, R. bursa, Hyalomma marginatum, H. anatolicum, H. aegyptium, and Haemaphysalis erinacei. Among the analyzed ticks, Hepatozoon spp., Theileria spp., Babesia spp., and Anaplasma spp. were detected at rates of 6.36%, 16.3%, 1.81%, and 6.36%, respectively while Borrelia spp. and Bartonella spp. were not detected. Hepatozoon spp. was detected in R. sanguineus ticks while Theileria spp., Babesia spp., and Anaplasma spp. were detected in R. turanicus and H. marginatum. According to the results of sequence analyses applied for pathogen positive samples, Hepatozoon canis, Theileria ovis, Babesia caballi, and Anaplasma ovis were identified. Conclusion Theileria ovis and Anaplasma ovis were detected for the first time to our knowledge in H. marginatum and R. turanicus collected from Turkey, respectively. Also, B. caballi was detected for the first time to our knowledge in ticks in Turkey.


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