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Spurious reticulocyte profiles in a dog with babesiosis.
- Source :
-
Veterinary clinical pathology [Vet Clin Pathol] 2016 Dec; Vol. 45 (4), pp. 594-597. Date of Electronic Publication: 2016 Oct 18. - Publication Year :
- 2016
-
Abstract
- A 9-year-old, female Maltese dog was referred to the Veterinary School of Toulouse with a 2-day history of anorexia and weakness. On clinical examination, the dog had hyperthermia (39.7°C), abdominal discomfort, and polypnea. Significant laboratory findings included pigmenturia, hyperbilirubinemia, hypercreatininemia, hyperfibrinogenemia, abnormal Snap canine pancreas-specific lipase, and pancytopenia with a nonregenerative anemia. A peripheral blood smear revealed numerous intraerythrocytic large Babesia but no polychromasia. There was a discrepancy between the absolute automated reticulocyte count (Sysmex reticulocyte count: 60 × 10 <superscript>9</superscript> /L; RI 19.4-150.1 × 10 <superscript>9</superscript> /L) and the manual reticulocyte count (3.6 × 10 <superscript>9</superscript> /L) as well as the absence of polychromasia. The optical red blood cell scattergram showed an abnormal isolated reticulocyte cluster at the location of low-fluorescence ratio cells. These findings were interpreted as erythrocytes parasitized by large Babesia. The discrepancy between the Sysmex reticulocyte count and the manual reticulocyte count has been reported previously in people with falciparum malaria and numerous intra-erythrocytic Plasmodium falciparum organisms. This spurious reticulocyte profile and reticulocyte count were observed with the Sysmex XT-2000iV and the ProCyte using the same fluorescent dye polymethine but not with the LaserCyte using new methylene blue which does not stain Babesia organisms on a blood smear performed for manual reticulocyte counting.<br /> (© 2016 American Society for Veterinary Clinical Pathology.)
- Subjects :
- Animals
Babesiosis parasitology
Babesiosis pathology
Blood Cell Count instrumentation
Blood Cell Count veterinary
Dog Diseases parasitology
Dog Diseases pathology
Dogs
Erythrocytes parasitology
Erythrocytes pathology
Female
Reticulocyte Count instrumentation
Reticulocyte Count veterinary
Reticulocytes parasitology
Babesia isolation & purification
Babesiosis blood
Dog Diseases blood
Reticulocytes pathology
Subjects
Details
- Language :
- English
- ISSN :
- 1939-165X
- Volume :
- 45
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Veterinary clinical pathology
- Publication Type :
- Report
- Accession number :
- 27755775
- Full Text :
- https://doi.org/10.1111/vcp.12395