Evaluation of sterility and biocide activity on microorganisms of commercially available cyanoacrylate

PURPOSE: To evaluate the sterility of the Super Bonder® cyanoacrylate and its biocide activity on microorganisms. METHODS: For verification of contamination, twenty samples of Super Bonder® cyanoacrylate were applied to brain heart infusion (BHI) media and incubated at 37° C. After 7 days of incubation, they were plated on blood, chocolate and Sabouraud agar. For the determination of the biocide effect, Staphylococcus xylosis, Staphylococcus aureus and Pseudomonas aeruginosa strains of the American Type Culture Collection (ATCC) were used in three different models, modifying the way Super Bonder® cyanoacrylate application (in microholes, pipes and on the agar). RESULTS: No positive growth was observed on the plated samples of cyanoacrylate in brain heart infusion. In the plates with microholes, growth of P. aeruginosa and inhibition of S. xylosis and S. aureus were observed. After removal of the adhesive, bacterial growth in all microholes was observed. In the plates with S. xylosis and S. aureus the presence of an apparent inhibition halo, that did not occur with P. aeruginosa was observed. CONCLUSION: The performed tests of sterility demonstrated that Super Bonder® cyanoacrylate is a safe alternative, regarding sterility, for treatment of small corneal perforations. No bacteriostatic or bactericidal effects were demonstrated with the tested cyanoacrylate, regarding S. aureus, S. xylosis and P. aeruginosa.

Cyanoacrylates; Tissue adhesives; Cornea; Anti-infective; Pseudomonas aeruginosa; Staphylococcus

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