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Article

Evaluation of Different Antiretroviral Drug Protocols on Naturally Infected Feline Immunodeficiency Virus (FIV) Cats in the late Phase of the Asymptomatic Stage of Infection

1
Service of Electrophysiology, Veterinary Medicine Teaching Hospital of the University of Buenos Aires, San Martín Av. 4453, CP 1427, Buenos Aires, Argentina
2
Department of Small Animals Medicine, School of Veterinary Sciences, University of Buenos Aires, CP 1427, Buenos Aires, Argentina
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Department of Clinical Pathology. School of Veterinary Sciences, University of Buenos Aires, Buenos Aires, 1427, Argentina
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Department of Immunology, School of Veterinary Sciences, University of Buenos Aires, CP 1427, Buenos Aires, Argentina
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Pablo Cassará Laboratory, Saladillo 2452, Buenos Aires, Argentina
*
Author to whom correspondence should be addressed.
Viruses 2012, 4(6), 924-939; https://doi.org/10.3390/v4060924
Received: 1 May 2012 / Revised: 14 May 2012 / Accepted: 24 May 2012 / Published: 30 May 2012
(This article belongs to the Special Issue Feline Retroviruses)
The aim of this study was to evaluate the efficacy of the antiretrovirals: Zidovudine (ZDV) alone; ZDV + Recombinant Human Interferon-α (rHuIFN-α); ZDV + Lamivudine (3TC) and ZDV + valproic acid (Valp) on naturally feline immunodeficiency virus (FIV)-infected cats, in the late phase of the asymptomatic stage of infection. The follow-up was performed over one year, through clinical evaluation and the determination of viral loads and CD4+/CD8+ ratios. Neurological signs were studied by visual and auditory evoked potentials (VEP, AEP) and the responses were abnormal in 80% of the FIV-infected cats. After one year, an improvement in VEP and AEP was observed in the ZDV + Valp group and a worsening in the group receiving ZDV + rHuIFN-α. The CD4+/CD8+ ratio showed a significant increase (both intra and inter-groups) only in ZDV and ZDV + 3TC, between their pre-treatment and one year values, as well as among the other groups. Viral load only showed a significant decrease in ZDV and ZDV + 3TC groups, when comparing the values at one year of treatment vs. pre-treatment values and when the different groups were compared. In addition, the viral load decrease was significantly more pronounced in the ZDV + 3TC vs. ZDV group. We conclude that ZDV and ZDV + 3TC produce significant reductions in viral load and stimulate a recovery of the CD4+/CD8+ ratio, compared with the other protocols. It is clear that the addition of 3TC resulted in a greater reduction in viral load than use of ZDV as a single drug. Therefore, the combination ZDV + 3TC could be more effective than the sole use of ZDV. View Full-Text
Keywords: antiretroviral therapy; FIV; retrovirus; visual and auditory evoked potentials; ZDV; 3TC; valproic acid; rHuIFN-α antiretroviral therapy; FIV; retrovirus; visual and auditory evoked potentials; ZDV; 3TC; valproic acid; rHuIFN-α
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MDPI and ACS Style

Gómez, N.V.; Fontanals, A.; Castillo, V.; Gisbert, M.A.; Suraniti, A.; Mira, G.; Pisano, P.B. Evaluation of Different Antiretroviral Drug Protocols on Naturally Infected Feline Immunodeficiency Virus (FIV) Cats in the late Phase of the Asymptomatic Stage of Infection. Viruses 2012, 4, 924-939. https://doi.org/10.3390/v4060924

AMA Style

Gómez NV, Fontanals A, Castillo V, Gisbert MA, Suraniti A, Mira G, Pisano PB. Evaluation of Different Antiretroviral Drug Protocols on Naturally Infected Feline Immunodeficiency Virus (FIV) Cats in the late Phase of the Asymptomatic Stage of Infection. Viruses. 2012; 4(6):924-939. https://doi.org/10.3390/v4060924

Chicago/Turabian Style

Gómez, Nélida V., Adriana Fontanals, Víctor Castillo, María A. Gisbert, Adriana Suraniti, Graciela Mira, and Paola B. Pisano 2012. "Evaluation of Different Antiretroviral Drug Protocols on Naturally Infected Feline Immunodeficiency Virus (FIV) Cats in the late Phase of the Asymptomatic Stage of Infection" Viruses 4, no. 6: 924-939. https://doi.org/10.3390/v4060924

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