Molecular detection of <i>Anaplasma platys</i> in lice collected from dogs in Australia

Brown, Graeme; Martin, Anthony R.; Roberts, Timothy K.; Dunstan, R. Hugh

doi:10.1111/j.1751-0813.2005.tb12208.x

Cited by 16 publications

(9 citation statements)

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“…The warm humid conditions would have favoured the survival of R sanguineus , known to be the vector for both A platys and B canis vogeli 2,3 compared to the overall drier conditions of the Tanami Desert and north‐western NSW. The detection of A platys in the Top End dogs was significantly higher than in the dogs from the drier regions (51% v 40%); however, the prevalence in the Tanami Desert would likely have been higher if sampling had been restricted to the wet season when ticks are more prevalent 13 …”

Section: Discussionmentioning

confidence: 84%

“…During an ongoing, wide‐ranging study of free‐roaming dogs associated with a large remote Aboriginal community in Central Australia, both A platys and B canis vogeli were detected in both the peripheral blood of dogs and the tick R sanguineus. 12,13 A platys was also detected in chewing lice ( Heterodoxus spiniger ) using PCR assays 13 . At the time of first detection of A platys in Australia, 12 an editorial accompanied the article and stated that ‘the challenges that lie ahead are to isolate and characterise the agent now presumed to be present in central Australia, determine the distribution of E platys in Australia and to relate it, if possible, to the clinical syndrome associated with thrombocytopenia in dogs that has been recognised in the field’ 14 .…”

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confidence: 99%

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Detection of Anaplasma platys and Babesia canis vogeli and their impact on platelet numbers in free‐roaming dogs associated with remote Aboriginal communities in Australia

et al. 2006

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A platys and B canis vogeli infection, either singularly or together, was widespread in free roaming dogs associated with remote Aboriginal communities in the Northern Territory and north-western New South Wales. Moreover, both A platys and B canis vogeli infections were associated with a reduction in mean platelet numbers in dog populations, particularly in young dogs. The fact that 51% of dogs infected with A platys alone and 72% dogs coinfected were thrombocytopenic compared to 27% of uninfected dogs suggests that the organism alone or in combination with B canis vogeli has the potential to cause thrombocytopenia and perhaps contribute to a clinical bleeding disorder in infected dogs.

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Section: Discussionmentioning

confidence: 84%

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confidence: 99%

Detection of Anaplasma platys and Babesia canis vogeli and their impact on platelet numbers in free‐roaming dogs associated with remote Aboriginal communities in Australia

et al. 2006

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“…However, it is important to consider that in August, a dry winter month, there was a larger number of dogs infected by A. platys than by B. canis (p < 0.05) and, during this period, very few dogs are exposed to infestation by R. sanguineus. This tick was considered the major transmitter of A. platys, but epidemiological studies have detected the DNA of this anaplasmataceae in a low percentage of R. sanguineus, demonstrating that A. platys is more prevalent in dogs than in this tick (Brown et al 2005, Ybañez et al 2012, Latrofa et al 2014.…”

Section: Discussionmentioning

confidence: 99%

“…Other arthropods are also thought to be capable of transmitting A. platys. Brown et al (2005) detected the DNA of A. platys in Heterodoxus spiniger and suggested that this louse species can be the vector of this bacterium, especially in winter months, because the prevalence of A. platys and H. spiniger in this season is high.…”

Section: Discussionmentioning

confidence: 99%

Molecular epidemiology of Anaplasma platys, Ehrlichia canis and Babesia vogeli in stray dogs in Paraná, Brazil

et al. 2017

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Hemoparasitic infections are tick-borne diseases, which affect animals and humans. Considering the importance of canine hemoparasitic infections in veterinary clinics, this study aimed to determine the occurrence of Anaplasma platys, Ehrlichia canis and Babesia vogeli in blood samples from 182 dogs not domiciled in the city of Pato Branco, southwestern region of Paraná State, Brazil, using polymerase chain reaction (PCR). The prevalence of A. platys and B. vogeli was 32.9% and 10.9% respectively, and A. platys infection prevailed (p<0.001). The number of dogs positive for A. platys was larger in Winter (p<0.05). All blood samples were negative for E. canis. In the dogs, infestation by Amblyomma cajennense predominated over that by Rhipicephalus sanguineus (p<0.001); but there was no significant association between PCR and the variables presence of ticks, sex and age. Dogs infected by A. platys and B. vogeli showed thrombocytopenia, lymphopenia and leukocytosis; but there was no correlation between such hematological changes and infection by hemoparasites. This appears to be the first molecular study that demonstrates the existence of A. platys and B. vogeli in dogs from the southwestern region of Paraná.

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“…DNA in lice, but DNA detection does not imply a transmission competence for the lice as vectors. A. platys DNA was recovered from lice collected from 1/3 puppies in Australia (Brown et al., 2005). However, it was not determined whether the A. platys DNA detected in the lice was a reflection of a recently ingested blood meal or whether the lice are in fact vectors.…”

Section: Transmissionmentioning

confidence: 99%

A Review of Bovine Anaplasmosis

Aubry

Geale

2010

Transboundary and Emerging Diseases

342

236

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Bovine anaplasmosis, caused by Anaplasma marginale, is an infectious but non-contagious disease. It is spread through tick bites or by the mechanical transfer of fresh blood from infected to susceptible cattle from biting flies or by blood-contaminated fomites including needles, ear tagging, dehorning and castration equipment. Transplacental transmission of A. marginale may contribute to the epidemiology of bovine anaplasmosis in some regions. Bovine anaplasmosis occurs in tropical and subtropical regions worldwide. Cattle of all ages are susceptible to infection with A. marginale, but the severity of disease increases with age. Once cattle of any age become infected with A. marginale, they remain persistently infected carriers for life. Diagnosis of bovine anaplasmosis can be made by demonstration of A. marginale on stained blood smears from clinically infected animals during the acute phase of the disease, but it is not reliable for detecting infection in pre-symptomatic or carrier animals. In these instances, the infection is generally diagnosed by serologic demonstration of antibodies with confirmation by molecular detection methods. The susceptibility of wild ruminants to infection by A. marginale and the role of wild ruminants in the epidemiology of bovine anaplasmosis are incompletely known owing to lack of published research, lack of validation of diagnostic tests for these species and cross-reaction of Anaplasma spp. antibodies in serologic tests. Control measures for bovine anaplasmosis vary with geographical location and include maintenance of Anaplasma-free herds, vector control, administration of antibiotics and vaccination.

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Molecular detection of Anaplasma platys in lice collected from dogs in Australia

Cited by 16 publications

References 9 publications

Detection of Anaplasma platys and Babesia canis vogeli and their impact on platelet numbers in free‐roaming dogs associated with remote Aboriginal communities in Australia

Detection of Anaplasma platys and Babesia canis vogeli and their impact on platelet numbers in free‐roaming dogs associated with remote Aboriginal communities in Australia

Molecular epidemiology of Anaplasma platys, Ehrlichia canis and Babesia vogeli in stray dogs in Paraná, Brazil

A Review of Bovine Anaplasmosis

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