Objectives: keratitis (AK) is a rare sight-threatening infectious disease with no approved pharmacological treatments Topical polihexanide 0.8 mg/ml (PHMB 0.08%) completed a pivotal clinical trial showing a medical cure rate of 84.9%. The purpose of this study is to evaluate the efficacy and safety of PHMB 0.08%, given as monotherapy, in clinical practice.
Methods: consecutive cases of AK were included. Diagnosis was confirmed by confocal microscopy or PCR. Patients were treated with PHMB 0.08% as part of a name-based compassionate use program. Treatment delivery frequency and termination were as advised in the pivotal clinical trial. Medical cure was defined as clinical evidence of healed epithelium and absence of corneal inflammation lasting 3 months after discontinuing all treatments.
Results: twelve eyes of 11 contact lens wearers with AK of variable severity were evaluated. Eleven of 12 (91.7%) eyes achieved a medical cure with no surgery. One eye had a corneal perforation and required emergency therapeutic keratoplasty. The median time of treatment with PHMB 0.08% was 100 days (range 35-222). Seven eyes (58.3%) reached a final visual acuity of 20/50 Snellen or better. Two subject reported worsening of conjunctival hyperaemia during the intensive phase of the treatment. No other adverse drug reactions were observed.
Conclusion: topical treatment with PHMB 0.08% monotherapy successfully cured AK in 11 of 12 eyes when used in real-world clinical practice, thereby confirming that results observed in the clinical trial could be obtained in this setting.
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http://dx.doi.org/10.1177/11206721241299470 | DOI Listing |
Pharmaceutics
February 2022
Department of Biomedical Sciences and Engineering, National Central University, Taoyuan City 32001, Taiwan.
Diabetic foot ulcers remain one of the most difficult-to-treat complications of diabetes and may seriously threaten the life of patients since it frequently results in limb loss due to amputation, suggesting that an effective therapeutic strategy is still urgently needed. In this study, a chitosan-based heterogeneous composite hydrogel encapsulating perfluorocarbon emulsions, epidermal growth factor (EGF)-loaded chitosan nanoparticles, and polyhexamethylene biguanide (PHMB) named PEENPPCH was developed for diabetic wound healing. The PEENPPCH could sustainably release EGF and PHMB in an ion-rich environment to exert antibacterial effects and promote cell growth for wound repair.
View Article and Find Full Text PDFOptom Vis Sci
November 2010
Brien Holden Vision Institute, The University of New South Wales, Sydney, New South Wales, Australia.
Purpose: The purpose of this study was to investigate the effect of lens care products on short-term subjective and physiological performance silicone hydrogel lenses.
Methods: Ten subjects wore either lotrafilcon B or galyfilcon A silicone hydrogel contact lenses soaked in a lens care product containing either Polyquad/Aldox or PHMB or control lenses inserted directly from the pack. Subjects wore the lenses for 6 h.
Eye Contact Lens
March 2009
Visioncare Research Ltd, Farnham, Surrey, United Kingdom.
Purpose: To clinically evaluate long-term users of two different contact lens care preservative systems and to investigate whether prolonged use is associated with an increase in the prevalence of dry eye.
Methods: Eighty-nine wearers of group IV hydrogel or silicone hydrogel lenses participated in this one-visit, investigator-masked study. Subjects were required to have consistently used a polyhexamethylene biguanide (PHMB) or polyquaternium-1 (PQT) based solution for 2 years.
Biochem Biophys Res Commun
August 2006
Division of Biochemical Sciences, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India.
Conformation and microenvironment at the active site of 1,4-beta-D-glucan glucanohydrolase was probed with fluorescent chemo-affinity labeling using o-phthalaldehyde. OPTA has been known to form a fluorescent isoindole derivative by cross-linking the proximal thiol and amino groups of cysteine and lysine. Modification of lysine of the enzyme by TNBS and of cysteine residue by PHMB abolished the ability of the enzyme to form an isoindole derivative with OPTA.
View Article and Find Full Text PDFOptom Vis Sci
December 2002
Centre for Contact Lens Research, School of Optometry, University of Waterloo, Waterloo, Ontario, Canada.
Purpose: To compare subjective symptoms and signs in a group of individuals who wear silicone-hydrogel lenses on a daily wear basis while they sequentially used two differing care regimens.
Methods: Fifty adapted soft-lens wearers were fitted with a silicone-hydrogel lens material (PureVision, Bausch & Lomb). The lenses were worn on a daily wear basis for two consecutive 1-month periods, during which the subjects used either a Polyquad (polyquaternium-1) -based system or a polyaminopropyl biguanide (PHMB) -based system, using a double-masked, randomized, crossover experimental design.
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