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Original Article

Clinical and experimental keratitis caused by the Colletotrichum state of Glomerella cingulata and Acrophialophora fusispora

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Pages 137-147 | Received 11 Oct 1982, Accepted 22 Dec 1982, Published online: 09 Jul 2009
 

Abstract

Two cases of mycotic keratitis caused by the Colletotrichum state of Glomerella cingulata and Acrophialophora fusispora are reported for the first time. Both the isolates produced experimental corneal lesions in rabbit eyes but A. fusispora was more pathogenic. The experimental infection was more severe, with both the fungi, in rabbits pretreated with cortisone as compared with untreated animals.

In vitro A. fusispora was most sensitive to miconazole and tolciclate followed by clotrimazole, amphotericin B and lactones while clotrimazole exerted maximum inhibitory effect on Colletotrichum followed by miconazole, lactones, amphotericin B and arnebins. Arnebins and tolciclate were inactive respectively against A. fusispora and Colletotrichum. Of the 3 drugs tested in vivo, against A. fusispora keratitis in rabbit, amphotericin B showed better results than tolciclate and miconazole.

Résumé

Deux cas de kératite mycosique dues au “stade” Colletotrichum de Glomerella cingulata et à Acrophialophora fusispora sont décrits pour la première fois. Les 2 isolats produisent des lésions expérimentales de la cornée chez le lapin mais A. fusispora est le plus pathogène. L'infection expérimentale est plus sévère avec les deux champignons, chez les lapins préalablement traités par la cortisone que chez ceux qui ne sont pas traités. In vitro, A. fusispora est plus sensible au miconazole et au tolciclate, suivis par le clotrimazole, l'amphotéricine B et les lactones tandis que le clotrimazole exerce un effet inhibiteur maximum sur Colletotrichum suivi par le miconazole, les lactones l'amphotéricine B et les arnébines. Arnébines et tolciclate sont inactifs respectivement sur A. fusispora et Colletotrichum. Des 3 produits testés in vivo sur la kératite à A. fusispora du lapin, l'amphotéricine B a donné de meilleurs résultats que le tolciclate et le miconazole.

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