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Open AccessCase Report

Medical Management of Cyclosporine-Induced Gingival Overgrowth Using Oral Azithromycin in Six Dogs

Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843, USA
Department of Medical Sciences, School of Veterinary Medicine, 2015 Linden Drive West, University of Wisconsin, Madison, WI 53706, USA
Author to whom correspondence should be addressed.
Academic Editors: Duncan Ferguson and Margarethe Hoenig
Vet. Sci. 2015, 2(1), 13-22;
Received: 30 December 2014 / Accepted: 2 February 2015 / Published: 5 February 2015
Gingival overgrowth is an uncommon adverse effect of cyclosporine administration in veterinary species. In people, gingival overgrowth is a common complication of cyclosporine administration for immunosuppression, generally following transplant procedures. Azithromycin has been used successfully for managing gingival overgrowth in human transplant patients when cyclosporine administration cannot be reduced or discontinued. This case series describes six dogs being administered cyclosporine for various dermatologic diseases that developed gingival overgrowth. The dogs were prescribed systemic azithromycin, with or without concurrent dose reduction of cyclosporine. Oral administration of 6.6–10.8 mg/kg of azithromycin once daily for 4–14 weeks was effective for complete clinical resolution of gingival overgrowth. In most cases, gingival overgrowth did not recur even with continued cyclosporine administration long-term. Adverse events of long-term azithromycin administration did not occur in any of the dogs. This series highlights a potentially beneficial medical treatment option for gingival overgrowth even when cyclosporine dose reduction is not possible or elected, without the need for surgical resection of proliferative gingival tissue. View Full-Text
Keywords: cyclosporine; gingival overgrowth; azithromycin; dog cyclosporine; gingival overgrowth; azithromycin; dog
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Diesel, A.; Moriello, K. Medical Management of Cyclosporine-Induced Gingival Overgrowth Using Oral Azithromycin in Six Dogs. Vet. Sci. 2015, 2, 13-22.

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