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Bacterial flora of stored human donor corneas after antibiotic treatment

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Summary

In 100 out of 122 eyes obtained at autopsy, bacteria could be cultured in swabs taken from the conjunctivae. After individual storage of the excised corneas at + 4° C in a modified tissue culture medium containing 100 μg/ml Gentalmicin, in 18 culture specimens there was still some growth of microorganisms. In comparison to nine other antibiotics, Gentamicin was the most effective against cultivated bacteria in a sensitivity test. However, in 25% of the specimens Ps.aeruginosa was resistant to Gentamicin. Polymyxin, to which Ps.aeruginosa was not resistant in the same test, should be used in combination with Gentamicin for antibiotic treatment of stored human donor corneas.

Zusammenfassung

Bei 100 von 122 während der Autopsie entnommenen Augen wurden aus dem Conjunctivalabstrich in der Kultur Bakterien nachgewiesen. Nach Aufbewahrung der excidierten Corneae bei + 4° C in einer modifizierten Gewebekulturlösung, die 100 μg/ml Gentamycin enthielt, wurden noch in 18 Fällen Bakterien in der Kultur beobachtet. Im Vergleich mit 9 anderen Antibiotica zeigte Gentamycin im Sensibilitätstest gegenüber den kultivierten Bakterien die beste Wirkung. In 25 % der Fälle jedoch war Ps.aeruginosa resistent auf Gentamycin. Im gleichen Sensibilitätstest wies P. aeruginosa gegenüber Polymyxin keine Resistenz auf und sollte daher bei der antibiotischen Behandlung von aufbewahrten Spenderhornhäuten in Kombination mit Gentamycin verwendet werden.

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This study was supported by the A. Bruppacher Foundation of the Zürich Eye Bank

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Schimmelpfennig, B., Hürzeler, R. Bacterial flora of stored human donor corneas after antibiotic treatment. Albrecht von Graefes Arch. Klin. Ophthalmol. 202, 181–185 (1977). https://doi.org/10.1007/BF00407867

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  • DOI: https://doi.org/10.1007/BF00407867

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