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Study supports safety of antimicrobial peptide-coated contact lenses
Date:4/24/2014

Philadelphia, Pa. (April 24, 2014) - Contact lenses coated with an antimicrobial peptide could help to lower the risk of contact lens-related infections, reports a study in Optometry and Vision Science, official journal of the American Academy of Optometry. The journal is published by Lippincott Williams & Wilkins, a part of Wolters Kluwer Health.

Studies in animals and now humans support the biocompatibility and safety of lenses coated with the antimicrobial peptide melimine, according to the new research by Debarun Dutta, B.Optom, of The University of New South Wales, Sydney, and colleagues. They write, "[T]his study has shown that melimine coated contact lenses can be safely worn by humans without any major side effects."

Synthetic Coating Designed to Mimic Natural Infection-Fighting Peptides

The researchers performed a series of experiments to evaluate the safety of contact lenses coated with melimine, designed to reduce the risk of inflammation and infections. Melimine is not an antibioticrather, it is a "cationic peptide" with broad-spectrum antimicrobial activity.

"Antimicrobial peptides are small peptides and part of the innate immune system of all multicellular organisms with the native ability to inhibit microbial growth," Dr Dutta and colleagues explain. Melimine is among the first antimicrobial peptides to be tested for clinical use. The study used conventional disposable contact lenses to which melimine was molecularly (covalently) bonded.

Studies in rabbits supported the safety of melimine-coated contact lenses for up to three weeks. There were no signs of toxic effects on the eye, either in terms of inflammation/infection or on the cellular level.

In a subsequent study, human v
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Contact: Connie Hughes
Connie.Hughes@wolterskluwer.com
646-674-6348
Wolters Kluwer Health
Source:Eurekalert

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