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Recent Advances in Anti-Infective Drug Discovery


ISSN (Print): 2772-4344
ISSN (Online): 2772-4352

Research Article

Enhancement of the Anti-biofilm Activity of Gold Nanoparticles- Itraconazole Conjugates in Resistant Candida glabrata

Author(s): Ensieh Lotfali, Mahsa Fattahi*, Reza Ghasemi, Farzan Zakermashhadi, Mohammad Shafiei, Mojgan Borzouie and Mohammad Mahdi Rabiei

Volume 16 , Issue 2 , 2021

Published on: 27 July, 2021

Page: [137 - 147] Pages: 11

DOI: 10.2174/2772434416666210607144543

Price: $65


Introduction: Onychomycosis, also called tinea unguium, is a common fungal infection affecting the nails. After dermatophytes, Candida species are recognized as second-line pathogens responsible for this infection. The treatment of onychomycosis requires a long time and is associated with high rates of recurrence. Antifungal medicines conjugated with gold (Au-NP) nanoparticle are the possible platforms for the reduction of drug resistance.

Methods: In the present study, we reported the in-vitro antifungal activity of itraconazole (ITZ) – Au conjugates, time-kill studies, and biofilm-producing ability of six ITZ-resistant C. glabrata.

Results: 3-(4,5-Dimethylthiazol-2-yl)-2,5-Diphenyltetrazolium bromide (MTT) quantitative results revealed that four out of six resistant isolates studied able to form biofilms in vitro. ITZ-Au conjugates were more effective than ITZ or Au nanoparticle alone, and the time-kill tests pointed to the suitable effect of ITZ-Au conjugate.

Conclusion: The present study concluded that ITZ-Au conjugates have an inhibitory effect on the biofilm of resistant C. glabrata isolates. Further studies are needed to compare the ex-vivo onychomycosis model.

Keywords: Candida glabrata, biofilm, nanoparticles, onychomycosis, itraconazole, drug resistance.

Graphical Abstract

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