November 6, 2012

$PVCT.OB: Onychomycosis, Another Indication for PH-10?

Abstract: Onychomycosis, a fungal infection of the finger or toenails, is predominantly caused by Trichophyton rubrum. Treatment is difficult due to high recurrence rates and problems with treatment compliance. For these reasons, alternative therapies are needed. Here we describe the photoactivation of Rose Bengal (RB) using a green laser (λ = 532 nm) at fluences of 68, 133 and 228 J/cm2, and assess its fungicidal activity on T. rubrum spore suspensions. A 140 µM RB solution was able to induce a fungicidal effect on T. rubrum when photosensitized with the fluence of 228 J/cm2. RB photosensitization using a green laser provides a potential novel treatment for T. rubrum infections. (© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

About Onychomycosis: "Onychomycosis is a chronic persistent fungal infection of the nail bed resulting in thickening and discoloration of the nail, which sometimes can be accompanied by serious pain and disability. According to the Merck Manual, the worldwide incidence rate of onychomycosis is approximately 10%. As described by Iorizzo and Piraccini (2007), the incidence has been increasing due to diabetes, immunosuppression and an aging population. While occurring in approximately 2.6% of children younger than 18 years, it occurs in as much as 90% of the elderly population ( As of 2008, Thomson Reuters Pharma had stated that the worldwide market was approximately $2.8 billion in size and is expected to grow to approximately $2.9 billion by 2014." [Source of paragraph above is in the link provided.]

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