Use of pradofloxacin to treat experimentally induced Mycoplasma hemofelis infection in cats.

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Dowers KL, Tasker S, Radecki SV, Lappin MR

Use of pradofloxacin to treat experimentally induced Mycoplasma hemofelis infection in cats.

Am J Vet Res. 2009 Jan;70(1):105-11. doi: 10.2460/ajvr.70.1.105.

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19119955 [ View in PubMed
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Abstract

OBJECTIVE: To evaluate the efficacy of the fluoroquinolone pradofloxacin in the treatment of cats experimentally infected with Mycoplasma hemofelis. ANIMALS: 23 young adult specific-pathogen-free cats. PROCEDURES: Cats were inoculated with M hemofelis from a chronically infected donor and assigned to 1 of 4 treatment groups: a doxycycline group, a low-dose-pradofloxacin group, a high-dose-pradofloxacin group, and an untreated control group. Treatment was initiated for 14 days when M hemofelis infection was detected via PCR assay and clinical signs of hemoplasmosis were present. Cats that had negative PCR assay results after treatment were administered a glucocorticoid and monitored via PCR assay for an additional 4 weeks. RESULTS: All cats yielded positive results for M hemofelis via conventional PCR and quantitative PCR assays and developed anemia. The low-dose-pradofloxacin group had significantly lower M hemofelis copy numbers than the doxycycline group. Six cats treated with pradofloxacin yielded negative results during treatment. Of those cats, 4 yielded negative conventional PCR assay results and all yielded negative quantitative PCR assay results for M hemofelis 1 month after administration of high-dose glucocorticoids. CONCLUSIONS AND CLINICAL RELEVANCE: Pradofloxacin had anti-M hemofelis effects similar to those of doxycycline. In addition, pradofloxacin may be more effective at long-term M hemofelis organism clearance than doxycycline.

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