CANINE EHRLICHIOSIS INDUCED MULTI-ORGAN DYSFUNCTION SYNDROME IN A LABRADOR RETRIEVER: A CASE REPORT
215 / 166
Keywords:
Ehrlichia canis, labrador retriever, hepatic injury, renal dysfunction, multi-organ dysfunction syndromeAbstract
Canine monocytic ehrlichiosis is a tick-borne infectious disease of dogs caused by Ehrlichia canis, transmitted primarily through Rhipicephalus sanguineus. The disease typically progresses through acute, subclinical, and chronic stages, each characterized by distinct hematological and clinical alterations. A three-years-old male Labrador Retriever was presented to the Small Animal Medicine Unit, Veterinary College Hospital, Bengaluru, with a history of progressive anorexia, vomiting, and lethargy for the past seven days.Clinical examination revealed pallor of mucous membranes, multiple lymphadenopathies, mild dehydration, and tick infestation along with enlarged hepatic silhouette on abdominal palpation. Hematological analysis revealed normocytic normochromic non-regenerative anemia and thrombocytopenia, while serum biochemistry indicated markedly elevated alanine aminotransferase (ALT), aspartate aminotransferase (AST), and total bilirubin levels. Molecular confirmation by multiplex PCR detected genome of Ehrlichia canis, establishing a diagnosis of Canine Monocytic Ehrlichiosis. The dog was treated with inj. doxycycline @ 10 mg/kg IV q24h for three days followed by oral route along with supportive treatment. Initial improvement was observed; however, three weeks later, the dog developed azotemia and persistent elevation of BUN and creatinine, consistent with chronic kidney disease (CKD) secondary to multi-organ dysfunction syndrome (MODS).Therefore, early diagnosis combined with effective tick control remains essential, as advanced cases often carry a guarded prognosis despite appropriate antibiotic therapy.
Downloads
References
Buhles, W.C., Huxsoll, D.L. and Hildebrandt, P.K. (1974). Tropical canine pancytopenia: role of bone marrow in hematologic manifestations. Infection and Immunity, 9(3) : 629–633.
Chandrasekar, M., Savitha, S. and Pasumarthi, V. (2022). Ehrlichia canis infection induced chronic kidney disease in a Labrador Retriever and its management: a case report. Asian Journal of Research in Animal and Veterinary Sciences, 52: 124-128.
Dantas-Torres, F., Chomel, B.B. and Otranto, D. (2022). Tick-Borne pathogens and diseases. Veterinary Parasitology, 295: 109432.
Dhankar, S., Sharma, R.D. and Jindal, N. 2011. Some epidemiological observations on canine ehrlichiosis in Haryana and Delhi State. Haryana Veterinary, 50: 9–14.
Dumler, J.S., Barbet, A.F., Bekker, C.P., Dasch, G.A., Palmer, G.H., Ray, S.C. and Bakken, J.S. (2001). Ehrlichiosis in humans: epidemiology, clinical presentation, diagnosis, and treatment. Clinical Infectious Diseases, 32(6): 1392–1403.
Eddlestone, S.M., Diniz, P.P., Neer, T.M., Gaunt, S.D., Corstvet, R., Gill, A. and Breitschwerdt, E.B. (2007). Doxycycline clearance of experimentally induced chronic Ehrlichia canis infection in dogs. Journal of Veterinary Internal Medicine, 21(6): 1237–1242.
Greig, B., Asato, R. and Rikihisa, Y. (1996).Isolation and cultivation of Ehrlichia canis from clinical cases of canine monocytic ehrlichiosis in the United States. Veterinary Parasitology, 67(1-2): 132-147.
Harikrishnan, T.J., Chellapa, D.J., Pazhanivel, N. and Rajavelu G. (2009). Serodiagnosis of canine ehrlichiosis by enzyme linked immunosorbent assays. Indian Veterinary Journal, 86: 668–670.
Harrus, S. and Waner, T. (2012). Diagnosis of canine monocytic ehrlichiosis (Ehrlichia canis): an overview. The Israeli Journal of Veterinary Medicine, 67(4): 195-202.
Harrus, S., Baneth, G. and Shkap, V. (1997). Canine monocytic ehrlichiosis: asurvey of clinical, hematological and serological findings in 100 naturally infected dogs. Veterinary Record, 141(21): 553-555.
Harrus, S., Waner, T., Avidar, Y., Bogin, E., Peh, H.C. and Bark, H. (1996). Serum protein alterations in canine ehrlichiosis. Veterinary Parasitology, 66(3): 241–249.
Hegarty, B.C. and Breitschwerdt, E.B. (1994). Efficacy of doxycycline therapy for canine monocytic ehrlichiosis. Veterinary Record, 135(24): 591-594.
Irwin, P.J. (2010). Canine monocytic ehrlichiosis (Ehrlichia canis infection): an update on diagnosis, treatment and prevention. Journal of Veterinary Science, 11(1): 1–10.
Lakshmanan, B., John, L. Dhinakarraj, G. and Gomathinayagam, S. (2011). Early diagnosis of canine ehrlichiosis by hot start PCR. Journal of Applied Animal Research, 31:11–12.
Mylonakis, M.E., Koutinas, A.F., Breitschwerdt, E.B., Hegarty, B.C., Billinis, C. and Kontos, V.S. (2004). Chronic canine ehrlichiosis (Ehrlichia canis): a retrospective study of 19 natural cases. Journal of the American Animal Hospital Association, 40(3): 174–184.
Mylonakis, M.E., Koutinas, A.F., Brezis, V., Plevraki, K., Leondides, L., Papadopoulou, C. and Kontos, V. (2001). Canine monocytic ehrlichiosis in Greece: Clinical and laboratory findings in naturally infected dogs, comparison with experimental infection and evaluation of a rapid diagnostic test. Annals of the New York Academy of Sciences, 1192: 91–96.
Neer, T.M., Breitschwerdt, E.B., Greene, R.T. and Lappin, M.R. (2002). Consensus statement on ehrlichial disease of small animals from the infectious disease study group of the ACVIM. American College of Veterinary Internal Medicine. Journal of Veterinary Internal Medicine, 16(3): 309–315.
Raguvaran, R., Tiwari, A., De, U.K. and Mondal, D.B. (2020). Successful treatment of jaundice secondary to Ehrlichia canis infection in a Labrador Retriever puppy. Journal of Indian Veterinary Association, 18(1): 142– 145.
Rikihisa, Y. (1991). The tribe Ehrlichieae and ehrlichial diseases. Clinical Microbiology Reviews, 4(3): 286–308.
Waner, T., Harrus, S., Bark, H., Jongejan, F. and Keysary, A. (1997). A comparative study of canine monocytic ehrlichiosis in experimentally and naturally infected dogs. Veterinary Parasitology, 72(1-2): 113-120.
Downloads
Submitted
Published
Issue
Section
License
All the copy right belongs to the sponsoring Organization, Tamil Nadu Veterinary and Animal Sciences University, Chennai - 51.