Canine dirofilariasis and concurrent tick-borne transmitted diseases in Bangkok, Thailand

Niwetpathomwat, Anuchai; Assarasakorn, Sukullaya; Techangamsuwan, Somporn; Suvarnavibhaja, Siram; Kaewthamasorn, Morakot

doi:10.1007/s00580-006-0637-z

Cited by 10 publications

(6 citation statements)

References 19 publications

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“…Further, samples positive by nested PCR assay showed a significant decrease in TLC (P < 0.05) indicating leucopaenia. Similar findings indicating leucopaenia in dogs suffering from CME have been previously reported (Niwetpathomwat et al 2006;Alexandre et al 2009). Also, samples positive by blood smear examination exhibited a significant (P < 0.05) decrease in platelet count indicating thrombocytopaenia in the present study though the data was not found to be significant when nested PCR was employed.…”

Section: Discussionsupporting

confidence: 90%

“…Among the various haematological alterations frequently observed in affected dogs, anaemia, which is usually normocytic, normochromic and non-regenerative, suggesting a restricted or absent bone marrow response is a very important finding and has been reported by many workers (Dagnone et al 2003;Bulla et al 2004;Niwetpathomwat et al 2006;Nakaghi et al 2008;Borin et al 2009;Gaunt et al 2010;Silva et al 2012). Similarly, in the present study a significant drop (P < 0.01) in haemoglobin levels was observed suggesting that CME is an important cause of anaemia in canines.…”

Section: Discussionsupporting

confidence: 82%

“…Thrombocytopaenia has been considered to be the most common and consistent haematological finding in dogs affected with CME as well as experimentally infected dogs. Mild to severe thrombocytopaenia in Ehrlichia-infected dogs has been documented (Codner and Farris-Smith 1986;Waner et al 1997;Bulla et al 2004;Macieira et al 2005;Niwetpathomwat et al 2006;Silva et al 2012). The thrombocytopaenia recorded can be explained by the immune-mediated destruction, increased consumption of platelets by sequestration or by decreased production, vasculitis and platelet function abnormalities (Lappin et al 2010).…”

Section: Discussionmentioning

confidence: 99%

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Molecular prevalence and risk factors for the occurrence of canine monocytic ehrlichiosis

Milanjeet¹,

Singh²,

Singh³

et al. 2014

Vet. Med.

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Evaluation of blood samples collected from 214 dogs from Ludhiana, Punjab (India) was performed for the presence of Ehrlichia canis using PCR-based assays targeting a portion of the 16S rRNA gene. Of the total samples subjected to routine blood smear examination, the morulae of E. canis were detected in 2.34% samples. Nested PCR assay produced amplicons of expected size (389 bp) specific for E. canis in 41.59% (89/214) of samples. The results of multivariate analysis showed that the prevalence of E. canis was higher in the summer as compared to the winter season (P = 0.031) and in dogs younger than six-month-old as compared to older dogs (P < 0.001), while breed and sex of the host were not significantly associated with the occurrence of the disease.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionsupporting

confidence: 82%

Section: Discussionmentioning

confidence: 99%

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Molecular prevalence and risk factors for the occurrence of canine monocytic ehrlichiosis

Milanjeet¹,

Singh²,

Singh³

et al. 2014

Vet. Med.

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“…RBC indices, hereby obtained, were consistent with those previously reported [ 11 , 12 , 18 , 29 ]. Furthermore, monocytosis (41.2%) was the main WBC abnormality in dogs with ehrlichiosis, followed by eosinopenia (30.3%) and neutrophilia (27.5%), which was similar to findings from other reports [ 12 , 18 , 20 , 30 , 31 ]. Leukocytosis was hereby observed controversially in 23.6% of E. canis -infected dogs, while other studies reported low numbers of WBC [ 30 , 31 ] or no significant difference in WBC counts when compared to healthy dogs [ 12 , 19 ].…”

Section: Discussionsupporting

confidence: 89%

Hematological profile of blood parasitic infected dogs in Southern Thailand

et al. 2020

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Background and Aim: Tick-borne pathogens such as Babesia canis, Hepatozoon canis, and Ehrlichia canis can cause serious disease in canines. Each blood parasite can be associated with different hematological characteristics in infected dogs. Identification of hematological alterations during routine laboratory screening of blood samples from dogs displaying clinical signs is essential for diagnosing blood parasitic infections. This study aimed to evaluate parasitic infections and hematological alterations in blood samples of infected dogs in Southern Thailand. Materials and Methods: A total of 474 blood samples were collected from dogs presented at the Veterinary Teaching Hospital of the Prince of Songkla University between 2016 and 2019. An automatic hematology analyzer was used to establish hematological values; peripheral blood films were screened for blood parasites and their detection was associated with hematological alterations to determine the odds ratio (OR). Results: This study found that E. canis (n=127) was the most common blood parasite infecting dogs in southern Thailand, followed by H. canis (n=100) and B. canis (n=24). Hematological alterations caused by Ehrlichia infections included anemia, thrombocytopenia, monocytosis, and eosinophilia (OR=14.64, 17.63, 20.34, and 13.43, respectively; p<0.01). The blood samples of Hepatozoon-infected dogs were characterized by anemia, thrombocytopenia, leukocytosis, neutrophilia, and monocytosis (OR=6.35, 3.16, 12.80, 11.11, and 17.37, respectively; p<0.01). Anemia, thrombocytopenia, eosinopenia, and lymphopenia (OR=10.09, 33.00, 20.02, and 66.47 respectively; p<0.01) were associated with B. canis-infected dogs. Conclusion: These data support the fact that hematological abnormalities are a hallmark for the identification of tick-borne infections. The hematological values, hereby reported, can be used as a guideline for the clinical diagnosis of canine blood parasitic infections in Southern Thailand.

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“…The most serious mosquito-borne disease in dogs is dirofilariosis that is caused by Dirofilaria immitis (Leidy 1856). Epidemiological studies on this disease in Thailand suggest that there is a high incidence of D. immitis in both stray and domestic dogs (Sangkavoranond 1981;Niwetpathomwat et al 2006). Mosquitoes are the only natural vector for canine dirofilariosis, with approximately 70 mosquito species being implicated.…”

Section: Introductionmentioning

confidence: 98%

Repellent and adulticide efficacy of a combination containing 10% imidacloprid and 50% permethrin against Aedes aegypti mosquitoes on dogs

2007

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This study was conducted to assess the repellent and adulticide efficacy of the combination containing 10% imidacloprid and 50% permethrin against Aedes aegypti mosquitoes on dogs. Blood-feeding success rates of the mosquitoes that were exposed to the treated dogs were 4.9 and 4.4% on days 3 and 7 post the combination application (PCA), respectively, and blood-feeding success rates increased to 6.3, 12.8, and 24.5% on days 14, 21, and 28 PCA, respectively. Blood-feeding success rates between the mosquitoes that were exposed to the treated and untreated control dogs on days 3, 7, 14, and 21 PCA were significantly different. All mosquitoes that were exposed to the treated dogs on day 3 PCA died, and mortality rates decreased to 97.1, 77.8, 40.4, and 2.1% on days 7, 14, 21, and 28 PCA, respectively. Mortality rates between the mosquitoes that were exposed to the treated and untreated control dogs on days 3, 7, 14, and 21 PCA were significantly different. This study suggested that this combination can be used to repel and kill mosquitoes on dogs; however, the application of this insecticide combination on dogs needs to be repeated every 3-4 weeks.

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Canine dirofilariasis and concurrent tick-borne transmitted diseases in Bangkok, Thailand

Cited by 10 publications

References 19 publications

Molecular prevalence and risk factors for the occurrence of canine monocytic ehrlichiosis

Molecular prevalence and risk factors for the occurrence of canine monocytic ehrlichiosis

Hematological profile of blood parasitic infected dogs in Southern Thailand

Repellent and adulticide efficacy of a combination containing 10% imidacloprid and 50% permethrin against Aedes aegypti mosquitoes on dogs

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