Title:Characterization, Antifungal Evaluation against Candida spp. Strains and
Application of Nystatin: β-cyclodextrin Inclusion Complexes
Volume: 20
Issue: 10
Author(s): Amanda Migliorini Urban, Francine Sumie Morikava, Amanda Cristina Schoeffel, Andressa Novatski, Gustavo Simão Moraes, Victoria Schlumberger Cachoeira, Graciette Matioli, Carmen Antonia Sanches Ito, Priscileila Colerato Ferrari, Karin Hermana Neppelenbroek, Vanessa Migliorini Urban*Paulo Vitor Farago
Affiliation:
- Department of
Dentistry, State University of Ponta Grossa, Ponta Grossa, PR, Brazil
Keywords:
Nystatin, beta-cyclodextrins, freeze-drying, spray-drying, Candida spp., denture stomatitis, DSC.
Abstract:
Background: Nystatin (Nys) is a fungicidal drug commonly prescribed for candidiasis disease
in several administration routes. However, Nys is a class IV drug, according to the Biopharmaceutical
Classification System, that possesses limited bioavailability and is used for local activity.
Objective: This study developed and characterized nystatin:β-cyclodextrin (Nys:βCD) inclusion complexes
and evaluated their activity against Candida spp.
Methods: Complexes were characterized by physicochemical techniques and drug dissolution profiles.
The susceptibility of C. albicans, C. krusei, C. parapsilosis, C. glabrata, C. guilliermondii, C. tropicalis,
and C. auris was assessed using the broth microdilution method. The applicability of Nys:βCD inclusion
complex was evaluated by incorporating it into a temporary soft material for denture stomatitis
treatment.
Results: Nys was better complexed in a 1:1 molar ratio by freeze-drying and spray-drying methods. The
inclusion complexes show bi-exponential release, an initial burst release followed by a sustained manner,
presenting higher dissolution efficiency than raw Nys. The 1:1 freeze-drying Nys:βCD complex
presents antifungal activity against all evaluated Candida strains, showing the maintenance of the drug
effectiveness. The inclusion complex incorporated into a tissue conditioner material for denture stomatitis
treatment effectively inhibited more than 90% of C. albicans biofilm growth during 7 and 14 days, in
a half dose compared to raw Nys.
Conclusion: This work represents a significant contribution to treating a wide variety of diseases caused
by the Candida species, optimizing the drug bioavailability and compliance to the treatment due to improved
drug solubility, dissolution, and sustained delivery.