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An association between systemic cyclosporine administration and development of acute bullous keratopathy in cats.

East Lansing – mechentel news – To determine whether any association exists between the onset of feline acute bullous keratopathy (ABK) and administration of systemic corticosteroid or immunosuppressive therapy, medical records of cats diagnosed with ABK between the years of 2000 and 2008 were retrospectively reviewed. Breed, age at diagnosis, weight, systemic disease status, eye affected, ophthalmic examination findings, systemic and topical therapy instituted, dosage and duration of therapy, visual outcome and histopathological analyses were recorded in cases meeting the inclusion criteria. A total of 12 cats of a surveyed population of 70 167 met the inclusion criteria with 17/24 eyes affected by ABK. Medical and/or surgical therapy was utilized for management of ABK with 13/17 eyes remaining sighted at the time of last follow-up. In a subset of cases corneal cytology, aerobic bacterial culture, FHV-1 PCR, virus isolation and/or histopathology were performed; no infectious organisms were identified. A rupture in Descemet’s membrane of the cornea was identified histologically in two globes. A total of 10 of 12 cats had been previously diagnosed with ongoing systemic disease. A total of 10 of 12 cats were receiving systemic therapy, and a significant association (P < 0.001) was noted between systemic administration of corticosteroids and/or cyclosporine A and the development of ABK. A total of 8 of 10 cats were administered oral prednisolone at doses between 1-2 mg/kg every 12-24 h. A total of 5 of 8 cats receiving oral prednisolone were concurrently administered oral cyclosporine at doses of 1.5-7 mg/kg every 12-24 h. Systemic cyclosporine therapy was found to be a significant risk factor (P < 0.001) for ABK development, while systemic prednisolone was not significant (P = 0.10). Systemic cyclosporine administration appears to be a risk factor for development of ABK in the population of cats studied.

Autors: Pierce KE Jr, Wilkie DA, Gemensky-Metzler AJ, Curran PG, Townsend WM, Petersen-Jones SM, Bartoe JT. Correspondence: K. E. Pierce, Department of Small Animal Clinical Sciences, Michigan State University, East Lansing, MI, USA. E-Mail: kpierce@gsvs.org. Study: An association between systemic cyclosporine administration and development of acute bullous keratopathy in cats. Source: Vet Ophthalmol. 2016 Feb 16. doi: 10.1111/vop.12367. [Epub ahead of print] Web: http://onlinelibrary.wiley.com/doi/10.1111/vop.12367/abstract.

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