A) Anaplasma platys nested PCR products of 30 blood samples from dogs in Chile. Positive samples from dogs 7, 12, 17, 19, 23, and 25 are indicated by a. This epidemiological survey of Anaplasma platys was carried out in rural and urban areas of three distinct regions of the State of Minas Gerais. Anaplasma platys is a Gram-negative bacterium that belongs to the rickettsial family Anaplasmataceae. In dogs, A platys multiplies inside platelet vacuoles and .

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Anaplasma phagocytophilum Human granulocytic anaplasmosisAnaplasmosis Ehrlichia chaffeensis Human monocytotropic ehrlichiosis Ehrlichia ewingii Ehrlichiosis ewingii infection. Molecular characterization of Anaplasma platys strains from dogs in Sicily, Italy.

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The organisms are transmitted by ticks, particularly Ixodes species, with rodents and deer serving as reservoir hosts in the northeastern United States, white-footed mice are the implicated main reservoir of not aaplasma Anaplasma but also Borrelia burgdorferi. Serologic and clinical evidence of canine ehrlichiosis and serologic evidence of human ehrlichiosis have been reported in Chile 34.

Articles with ‘species’ microformats All stub articles. There are usually more than per cell. Scale bar at the lower left indicates 0. The purpose of this study was to identify the etiologic agent of canine ehrlichiosis in Chile. Further studies that investigate anaplasmma pathogenic and zoonotic role of A.

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Dense basophilic inclusions were observed in bone marrow platelet precursors of both dogs. Author information Article notes Copyright and License information Disclaimer.

Anaplasma platys in Bone Marrow Megakaryocytes of Young Dogs

PCR confirmation of A. Acknowledgments We thank Marcelo Labruna for critical comments on the manuscript.

This Alphaproteobacteria -related article is a stub. Rickettsia felis Flea-borne spotted fever. In the canine host, A. Address correspondence to Donato de Caprariis, ti. Anaplasma species are intracellular bacteria that are within the family of Anaplasmataceae of the order Rickettsiales.

Footnotes Published ahead of print 12 March The clinical syndrome is one of acute onset, severe anemia with icterus, fever, anorexia, dehydration and depression. Anaplasma platys Dumler et al. The disease is transmitted by several species of ticks and is called tick-borne fever.

If they survive, several days after the onset of signs, the number of parasites anaplssma very low and anemia is plwtys macrocytic and hypochromic with reticulocytosis. Enterotoxigenic Enteroinvasive Enterohemorrhagic O Anaplasma platys infection induces platelet phagocytosis as a consequence of direct injury or immune-mediated destruction 3 ; moreover, the increase in circulating monocytes of dog 1 and bone p,atys monocyte and macrophage hyperplasia and platelet phagocytosis observed in both dogs may be related to an overwhelming A.


Suggested citation for this article: The former infects granulocytes neutrophils and eosinophils whereas the latter infects platelets. Blood samples were obtained from 30 pet dogs seen in a private veterinary clinic in Santiago, Chile, with tick infestation and clinical signs compatible with ehrlichiosis hemorrhagic manifestations and thrombocytopenia.

However, none of these cases have been confirmed by molecular assays. Cyclic thrombocytopenia induced by a Rickettsia-like agent in dogs. Ehrlichiaceae Scientific classification Kingdom: Unlike Babesia species, hemoglobinuria does not occur as the hemolysis is extravascular in the spleen and bone marrow.

Nested PCR assay for detection of granulocytic ehrlichiae. Endemic areas in the U. Ixodida collected from dogs in Africa. Author information Copyright and License information Disclaimer. These findings support the conclusion that A. Recent publications report A. The organisms were morphologically identical to A.

Further studies are required to establish if the young age of the animals could represent a predisposing factor for platelet precursor infection.