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  • Title: Yeast colonization of voice prostheses: pilot study investigating effect of a bovine milk product containing anti-Candida albicans immunoglobulin A antibodies on yeast colonization and valve leakage.
    Author: Holmes AR, Chong K, Rodrigues E, Cannon RD, Carpenter E, Ruske DR, Dawes PJ.
    Journal: Ann Otol Rhinol Laryngol; 2012 Jan; 121(1):61-6. PubMed ID: 22312930.
    Abstract:
    OBJECTIVES: Our goals were to determine whether a bovine milk product containing anti-Candida albicans immunoglobulin A antibodies ("immune milk") could reduce the adherence of C albicans to voice prosthesis silicone in vitro, and whether administration of the milk could reduce C albicans colonization and voice prosthesis damage in vivo. METHODS: An in vitro assay of C albicans attachment to silicone was developed with radiolabeled C albicans. A pilot crossover in vivo trial, over 3 periods of 3 months, was also undertaken for 4 patients with voice prostheses, comparing daily administrations of immune milk and a control milk product. The prosthesis valves were replaced at each changeover and were assessed for wet weight of removable biofilm, yeast numbers in removable biofilm, valve leakage, and valve damage. RESULTS: Immune milk inhibited C albicans adherence to silicone in vitro. However, in a small clinical pilot study, this effect was not replicated. CONCLUSIONS: There is scope to further investigate the topical use of immune milk for management of voice prosthesis biofilms.
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