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  • Title: Pilot study evaluating the efficacy of a topical formulation containing emodepside and praziquantel in the treatment of natural feline troglostrongylosis.
    Author: Traversa D, Veronesi F, Danesi P, Morelli S, Crisi PE, Morganti G, Iorio R, Pampurini F, Schaper R, Santoro A, Paoletti B, Di Cesare A.
    Journal: Parasit Vectors; 2019 Mar 12; 12(1):97. PubMed ID: 30867041.
    Abstract:
    BACKGROUND: Troglostrongylus brevior, a lungworm usually affecting wild felids, has been recently recorded in a number of cases in domestic cats, mainly in Mediterranean areas. Although feline troglostrongylosis is a severe and life-threatening disease, especially in young cats, treatment options are very limited. The present study evaluated the efficacy and safety of a spot-on formulation containing emodepside 2.1% and praziquantel 8.6% (Profender®, Bayer), which is licensed for treatment of the more common cat lungworm Aelurostrongylus abstrusus, for the treatment of natural troglostrongylosis. METHODS: Sixteen cats enrolled in the study were 1:1 allocated to two groups, i.e. Group T, treated with Profender® spot-on on days 0 and 14 (± 2) at the recommended clinical dose, and Group C which remained untreated. After study completion, the control cats received two rescue treatments with Profender® on days 28 (± 2) and 42 (± 2). The primary efficacy criterion was the absence of T. brevior L1 following treatment. Other efficacy parameters were the quantitative comparison of L1 presence before (baseline) and after treatment in both groups, and the comparison of clinical signs pre- and post-treatment. RESULTS: In terms of stopping larval shedding, Profender® showed an efficacy of 97% and 97.5% (arithmetic and geometric means, respectively) for group T, 97.1% and 98.5% for group C after one administration, and 100% for both groups after two doses. Overall, 12 cats showed clinical signs related to T. brevior. Specifically, 9 were clinically affected before treatment while clinical signs appeared after the first treatment in 3 cats. At the end of the study, all symptomatic cats fully recovered with the exception of 3 cats that showed clinical signs similar to those observed at the pre-treatment examination at the end of the study. CONCLUSIONS: This study shows that Profender® is effective against T. brevior.
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