J Biomed Res.  2014 Jun;15(2):96-99.

Azidothymidine and recombinant human interferon-alpha therapy in a cat with feline immunodeficiency virus

Affiliations
  • 1Department of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University, Seoul 143-701, Korea. parkhee@konkuk.ac.kr
  • 2Department of Infectious Diseases, College of Veterinary Medicine, Konkuk University, Seoul 143-701, Korea. ischoi@konkuk.ac.kr
  • 3Veterinary Medical Diagnostic Laboratory, College of Veterinary Medicine, University of Missouri, Columbia, Missouri 65205, USA.

Abstract

A 7-year-old, spayed female, domestic short hair cat showed signs of a 2-week history of chronic anorexia, depression, and severe weight loss. Upon physical examination, pyrexia, mild gingivitis, and pale mucus membranes were noted. Laboratory analysis revealed normocytic normochromic non-regenerative anemia, severe thrombocytopenia, and hypergammaglobulinemia. Serum protein electrophoresis revealed the presence of elevated alpha-2 fraction within the globulin concentration. Based on history, clinical signs, and laboratory results, systemic viral infection was strongly suspected. Reverse transcriptase polymerase chain reaction identified the presence of feline immunodeficiency virus (FIV) in the serum. Furthermore, gene sequencing revealed the virus as FIV subtype A. Treatment with anti-retroviral agents, including azidothymidine (AZT) and recombinant human interferon-alpha, was continued for 4 weeks. However, the patient's clinical condition deteriorated, resulting in death 1 month after initiation of treatment due to progressive renal failure. Necropsy and histopathology revealed hepatic and renal necrosis with hyper-cellular bone marrow mainly comprised of myeloid precursor cells. This case report is the first to describe phylogenetic subtyping, anti-retroviral combination treatment, and clinical outcomes in an FIV-infected cat in Korea. In addition, this report suggests that treatment should be initiated during the early phase of infection that could be effective for the virus.

Keyword

feline immunodeficiency virus (FIV); subtype A; antiretroviral therapy; AZT; interferon-alpha

MeSH Terms

Anemia
Animals
Anorexia
Anti-Retroviral Agents
Bone Marrow
Cats*
Child
Depression
Electrophoresis
Female
Fever
Gingivitis
Hair
Humans
Hypergammaglobulinemia
Immunodeficiency Virus, Feline*
Interferon-alpha*
Korea
Membranes
Mucus
Necrosis
Physical Examination
Renal Insufficiency
Reverse Transcriptase Polymerase Chain Reaction
Thrombocytopenia
Weight Loss
Zidovudine*
Anti-Retroviral Agents
Interferon-alpha
Zidovudine
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