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Papers and Articles |
1 Dipartimento di Scienze Cliniche Veterinarie, Sezione Clinica Medica, Facolta
di Medicina Veterinarie, via F. Delpino 1, 80137 Naples, Italy
2 Dipartimento di Patologia e Sanità Animale, Sezione Clinica Medica,
Facolta di Medicina Veterinarie, via F. Delpino 1, 80137 Naples, Italy
3 Istituto Superiore di Sanità, viale Regina Elena 199, 00166 Rome,
Italy
Bone marrow aspiration smears from 15 dogs naturally infected with
leishmania were evaluated. Three of the dogs showed no clinical signs, six had
up to three clinical signs and six had more than three. The most common
pathological features of the bone marrow were megakaryocytic dysplasia in 10
of the dogs, erythrophagocytosis in eight, erythroid dysplasia in two and
emperipolesis in two. The megakaryocytic and erythroid dysplasia were probably
related to an increased number of marrow macrophages producing high levels of
tumour necrosis factor
and interferon
. Six of the dogs with
clinical signs showed bone marrow dysplastic features and erythrophagocytosis,
suggesting that leishmaniosis could be the unique cause of both
conditions.
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