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Pd@Ag Nanosheets in Combination with Amphotericin B Exert a Potent Anti-Cryptococcal Fungicidal Effect

Silver nanoparticles have received considerable interest as new "nanoantibiotics" with the potential to kill drug-resistant microorganisms. Recently, a class of new core-shell nanostructures, Pd@Ag nanosheets (Pd@Ag NSs), were created using deposition techniques and demonstrated excellent...

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Published in:PloS one 2016-06, Vol.11 (6), p.e0157000
Main Authors: Zhang, Chao, Chen, Mei, Wang, Guizhen, Fang, Wei, Ye, Chen, Hu, Hanhua, Fa, Zhenzong, Yi, Jiu, Liao, Wan-Qing
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cited_by cdi_FETCH-LOGICAL-c692t-b87a96c5e02b5cec5b885862ecc1de5bc8746ee4b6d28c4f700bee45691b38513
cites cdi_FETCH-LOGICAL-c692t-b87a96c5e02b5cec5b885862ecc1de5bc8746ee4b6d28c4f700bee45691b38513
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container_issue 6
container_start_page e0157000
container_title PloS one
container_volume 11
creator Zhang, Chao
Chen, Mei
Wang, Guizhen
Fang, Wei
Ye, Chen
Hu, Hanhua
Fa, Zhenzong
Yi, Jiu
Liao, Wan-Qing
description Silver nanoparticles have received considerable interest as new "nanoantibiotics" with the potential to kill drug-resistant microorganisms. Recently, a class of new core-shell nanostructures, Pd@Ag nanosheets (Pd@Ag NSs), were created using deposition techniques and demonstrated excellent inhibitory effects on various bacteria in vitro. In this study, we evaluated the antifungal activity of Pd@Ag NSs against common invasive fungal pathogens. Among these organisms, Cryptococcus neoformans complex species was most susceptible to Pd@Ag NSs, which exhibited potent antifungal activity against various molecular types or sources of cryptococcal strains including fluconazole-resistant isolates. The anticryptococcal activity of Pd@Ag NSs was significantly greater than fluconazole and similar to that of amphotericin B (AmB). At relatively high concentrations, Pd@Ag NSs exhibited fungicidal activity against Cryptococcus spp., which can likely be attributed to the disruption of cell integrity, intracellular protein synthesis, and energy metabolism. Intriguingly, Pd@Ag NSs also exhibited strong synergistic anti-cryptococcal fungicidal effects at low concentrations in combination with AmB but exhibited much better safety in erythrocytes than AmB, even at the minimal fungicidal concentration. Therefore, Pd@Ag NSs may be a promising adjunctive agent for treating cryptococcosis, and further investigation for clinical applications is required.
doi_str_mv 10.1371/journal.pone.0157000
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Intriguingly, Pd@Ag NSs also exhibited strong synergistic anti-cryptococcal fungicidal effects at low concentrations in combination with AmB but exhibited much better safety in erythrocytes than AmB, even at the minimal fungicidal concentration. Therefore, Pd@Ag NSs may be a promising adjunctive agent for treating cryptococcosis, and further investigation for clinical applications is required.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>27271376</pmid><doi>10.1371/journal.pone.0157000</doi><oa>free_for_read</oa></addata></record>
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1932-6203
language eng
recordid cdi_plos_journals_1794512536
source Open Access: PubMed Central; ProQuest - Publicly Available Content Database
subjects Amphotericin B
Amphotericin B - pharmacology
Antifungal activity
Antifungal agents
Antifungal Agents - pharmacology
Antimicrobial agents
Bacteria
Biology and Life Sciences
Candida
Chemistry
Complications and side effects
Core-shell structure
Cryptococcosis
Cryptococcus
Cryptococcus neoformans
Cryptococcus neoformans - drug effects
Dermatology
Dosage and administration
Dose-Response Relationship, Drug
Drug resistance
Drug Synergism
Energy metabolism
Engineering and Technology
Erythrocytes
Fluconazole
Fungal infections
Fungi
Fungicidal activity
Fungicides
Laboratories
Low concentrations
Medicine and Health Sciences
Meningitis
Metabolism
Microbial Sensitivity Tests
Microorganisms
Molecular chains
Nanomaterials
Nanoparticles
Nanosheets
Nanostructure
Nanostructures - chemistry
Nanotechnology
Palladium
Physiological aspects
Properties
Protein biosynthesis
Protein synthesis
Protein turnover
Proteins
Saccharomyces cerevisiae
Silver
Silver - pharmacology
Therapeutic applications
Toxicity
title Pd@Ag Nanosheets in Combination with Amphotericin B Exert a Potent Anti-Cryptococcal Fungicidal Effect
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