Peer-reviewed veterinary case report
Non-productive feline leukemia virus infection common in necropsied
By Suntz, M et al.·Published in Veterinary immunology and immunopathology·2010·Institut fü, Germany·View original on PubMed →
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Original publication title: High prevalence of non-productive FeLV infection in necropsied cats and significant association with pathological findings.
- Species:
- cat
Plain-English summary
A study of 302 cats that had passed away found that about 9% had a type of feline leukemia virus (FeLV) that actively affected their health, while half of the cats had the virus in their bone marrow but showed no signs of illness. These cats were older and often came from animal shelters. The researchers noted that non-productive FeLV infection was linked to other health issues like anemia and inflammation, but not to lymphosarcoma, which is usually associated with the active form of the virus. Understanding these findings can help veterinarians better assess and manage the health of cats with FeLV.
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Abstract
Applying a combination of semi-nested PCR and immunohistology (IHC), the presence of exogenous feline leukemia virus infection was studied in 302 necropsied cats with various disorders. 9% showed the classical outcome of persistent productive FeLV infection which was represented by FeLV antigen expression in different organs. 152 cats (50%) harboured exogenous FeLV-specific proviral sequences in the bone marrow but did not express viral antigen. These cats were considered as horizontally but non-productively infected. Statistical evaluation showed a significant association of non-productive horizontal FeLV infection with a variety of parameters. Non-productively infected cats were statistically significantly older and more often originated from animal shelters than cats without exogenous FeLV infection. Furthermore, some pathological disorders like anemia, panleukopenia, and purulent inflammation showed significant association with non-productive FeLV infection. No significant association was found with lymphosarcoma, known for a long time to be induced by productive FeLV infection.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/20398945/