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Front Vet Sci. 2017 Feb 14;4:7. doi: 10.3389/fvets.2017.00007. eCollection 2017.

Polyprenyl Immunostimulant Treatment of Cats with Presumptive Non-Effusive Feline Infectious Peritonitis In a Field Study.

Author information

1
Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee , Knoxville, TN , USA.
2
Sass & Sass, Inc. , Oak Ridge, TN , USA.
3
Independent Consultant , Oak Ridge, TN , USA.
4
Graduate School of Medicine, University of Tennessee , Knoxville, TN , USA.

Abstract

Feline infectious peritonitis (FIP) is a fatal disease with no clinically effective treatment. This field study evaluated treatment with Polyprenyl Immunostimulant (PI) in cats with the non-effusive form of FIP. Because immune suppression is a major component in the pathology of FIP, we hypothesized that treatment with an immune system stimulant would increase survival times of cats with dry FIP. Sixty cats, diagnosed with dry FIP by primary care and specialist veterinarians and meeting the acceptance criteria, were treated with PI without intentional selection of less severe cases. The survival time from the start of PI treatment in cats diagnosed with dry FIP showed that of the 60 cats with dry FIP treated with PI, 8 survived over 200 days, and 4 of 60 survived over 300 days. A literature search identified 59 cats with non-effusive or dry FIP; no cat with only dry FIP lived longer than 200 days. Veterinarians of cats treated with PI that survived over 30 days reported improvements in clinical signs and behavior. The survival times in our study were significantly longer in cats who were not treated with corticosteroids concurrently with PI. While not a cure, PI shows promise in the treatment of dry form FIP, but a controlled study will be needed to verify the benefit.

KEYWORDS:

Polyprenyl Immunostimulant; chronic disease; feline coronavirus; feline infectious peritonitis; field study; increased survival

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