Journal of veterinary internal medicine · 2019
Clinicopathological findings in 41 dogs (2008-2018) naturally infected with Ehrlichia ewingii.
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Qurollo Barbara A, Buch Jesse, Chandrashekar Ramaswamy, Beall Melissa J, Breitschwerdt Edward B, Yancey Caroline B, Caudill Alexander H, Comyn Alaire
Аннотация
BACKGROUND: Ehrlichia ewingii is the most seroprevalent Ehrlichia-infecting dogs in the southern and mid-western United States. Fever, lameness, and polyarthritis are commonly reported findings in dogs naturally infected with E. ewingii.
OBJECTIVES: To evaluate clinicopathologic findings in a population of dogs naturally infected with E. ewingii.
ANIMALS: Forty-one dogs PCR positive for E. ewingii and PCR negative for other targeted vector-borne organisms.
METHODS: Retrospective study. Clinical and clinicopathologic data including physical examination findings, CBC, serum biochemistry, urinalysis (UA), symmetric dimethylarginine (SDMA), and vector-borne disease diagnostic results were reviewed.
RESULTS: Frequent clinical diagnoses other than ehrlichiosis (28/41; 68.3%) were renal disease (7/41; 17.1%) and immune-mediated hemolytic anemia (IMHA) (6/41; 14.6%). The most frequent physical examination finding was joint pain (14/41; 34.1%). Prominent hematologic and biochemical abnormalities included abnormal lymphocyte counts (22/36; 61.1%); neutrophilia (21/37; 56.8%); increased alkaline phosphatase (20/35; 57.1%) and alanine transaminase (14/35; 40%) activities; and increased SDMA concentration (11/34; 32.4%). Urinalysis abnormalities included proteinuria (20/27; 74%), most with inactive sediments (16/20; 80%). Dogs were seroreactive by Ehrlichia canis immunofluorescence assay (IFA; 17/39; 43.6%) and Ehrlichia ELISA (34/41; 82.9%). Seroreactivity by IFA for other vector-borne pathogens included Bartonella (1/39; 2.6%), Rickettsia rickettsii (spotted-fever group rickettsiae) (12/39; 30.8%), and Borrelia burgdorferi by ELISA (1/41; 2.4%).
CONCLUSIONS AND CLINICAL IMPORTANCE: Renal disease, IMHA, proteinuria, neutrophilia, abnormal lymphocytes, and increased liver enzyme activities were common in this group of E. ewingii-infected dogs. Studies are needed to determine if E. ewingii contributes to comorbidities or is a precipitating factor in clinical syndromes in persistently infected dogs.
OBJECTIVES: To evaluate clinicopathologic findings in a population of dogs naturally infected with E. ewingii.
ANIMALS: Forty-one dogs PCR positive for E. ewingii and PCR negative for other targeted vector-borne organisms.
METHODS: Retrospective study. Clinical and clinicopathologic data including physical examination findings, CBC, serum biochemistry, urinalysis (UA), symmetric dimethylarginine (SDMA), and vector-borne disease diagnostic results were reviewed.
RESULTS: Frequent clinical diagnoses other than ehrlichiosis (28/41; 68.3%) were renal disease (7/41; 17.1%) and immune-mediated hemolytic anemia (IMHA) (6/41; 14.6%). The most frequent physical examination finding was joint pain (14/41; 34.1%). Prominent hematologic and biochemical abnormalities included abnormal lymphocyte counts (22/36; 61.1%); neutrophilia (21/37; 56.8%); increased alkaline phosphatase (20/35; 57.1%) and alanine transaminase (14/35; 40%) activities; and increased SDMA concentration (11/34; 32.4%). Urinalysis abnormalities included proteinuria (20/27; 74%), most with inactive sediments (16/20; 80%). Dogs were seroreactive by Ehrlichia canis immunofluorescence assay (IFA; 17/39; 43.6%) and Ehrlichia ELISA (34/41; 82.9%). Seroreactivity by IFA for other vector-borne pathogens included Bartonella (1/39; 2.6%), Rickettsia rickettsii (spotted-fever group rickettsiae) (12/39; 30.8%), and Borrelia burgdorferi by ELISA (1/41; 2.4%).
CONCLUSIONS AND CLINICAL IMPORTANCE: Renal disease, IMHA, proteinuria, neutrophilia, abnormal lymphocytes, and increased liver enzyme activities were common in this group of E. ewingii-infected dogs. Studies are needed to determine if E. ewingii contributes to comorbidities or is a precipitating factor in clinical syndromes in persistently infected dogs.