Bone marrow changes and the importance of the myelogram in diagnosing canine monocytics ehrlichiosis
A review
DOI:
https://doi.org/10.35172/rvz.2018.v25.37Keywords:
Ehrlichia canis, myelogram, hematopoiesis, precursor cells, immune-mediated processAbstract
Canine Monocytic Ehrlichiosis (CME) is a multisystemic disease with high incidence among dogs. However, its pathogenesis has not been fully elucidated. Plasma cells and lymphoplasmacytic infiltrates are observed in most organs of infected animals, including bone marrow. These infiltrates suggest that most of the pathological lesions identified in the chronic phase may be a consequence of the inflammatory process initiated at the beginning of the infection. This work aims to highlight the importance of the bone marrow evaluation of dogs with CME. A better understanding of the medullary changes in the acute phase could help clarifying the origin of clinical signs observed in the chronic phase. More studies are needed to verify whether the pathogenesis of CME is related to either the immune-mediated processes or the direct aggressions of Ehrlichia canis in precursor cells. Understanding the pathophysiological mechanisms of E. canis will improvement both current therapeutic strategies as well as the prognosis of severely affected animals.
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