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Imidazolium salts with antifungal potential against multidrug-resistant dermatophytes

Aims To investigate the antidermatophytic action of a complementary set imidazolium salts (IMS), determining structure-activity relationships and characterizing the IMS toxicological profiles. Methods and Results The susceptibility evaluation of 45 dermatophytic clinical isolates, treated in vitro w... Full description

Journal Title: Journal of Applied Microbiology August 2015, Vol.119(2), pp.377-388
Main Author: Donato, R
Other Authors: Buendchen, C , Guez, C , Bergamo, V , Oliveira, Lfs , Machado, M , Schrekker, H , Fuentefria, A
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 1364-5072 ; E-ISSN: 1365-2672 ; DOI: 10.1111/jam.12862
Link: http://search.proquest.com/docview/1787981201/?pq-origsite=primo
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title: Imidazolium salts with antifungal potential against multidrug-resistant dermatophytes
format: Article
creator:
  • Donato, R
  • Buendchen, C
  • Guez, C
  • Bergamo, V
  • Oliveira, Lfs
  • Machado, M
  • Schrekker, H
  • Fuentefria, A
subjects:
  • Clinical Isolates
  • Skin
  • Anions
  • Drug Resistance
  • Fungi
  • Genotoxicity
  • Leukocytes
  • Chloride
  • Toxicity
  • Minimum Inhibitory Concentration
  • Salts
  • Cytotoxicity
  • Cations
  • Mycosis
  • Antifungal Activity
  • Fungicides
  • Cytology
  • Structure-Activity Relationships
  • Drugs
  • Skin
  • Anions
  • Cell Morphology
  • Fungi
  • Genotoxicity
  • Chlorides
  • Toxicity
  • Salts
  • Cytotoxicity
  • Cations
  • Fungicides
  • Structure-Activity Relationships
  • Drugs
  • Plant Protection, Fungicides & Seed Treatments
  • Human Diseases
  • Toxicology & Environmental Safety
ispartof: Journal of Applied Microbiology, August 2015, Vol.119(2), pp.377-388
description: Aims To investigate the antidermatophytic action of a complementary set imidazolium salts (IMS), determining structure-activity relationships and characterizing the IMS toxicological profiles. Methods and Results The susceptibility evaluation of 45 dermatophytic clinical isolates, treated in vitro with eleven different IMS (ionic compounds) and commercial antifungals (nonionic compounds), was performed by broth microdilution, following the standard norm of CLSI M38-A2. All dermatophytes were inhibited by IMS, where the lowest minimum inhibitory concentration (MIC) values were observed for salts with n-hexadecyl segment in the cation side chain, containing either the chloride or methanesulfonate anion. 1-n-Hexadecyl-3-methylimidazolium chloride (C sub(16)MImCl) and 1-n-hexadecyl-3-methylimidazolium methanesulfonate (C sub(16)MImMeS) acted as fungicides, even in extremely low concentrations, wherein C sub(16)MImMeS exerted this effect on 100% of the tested dermatophytes. Some of these IMS provoked evident alterations on the fungi cell morphology, causing a total cell damage of greater than or equal to 70%. Importantly, none of the screened IMS were cytotoxic, mutagenic or genotoxic to human leucocyte cells. Conclusions This report demonstrates for the first time the strong antifungal potential of IMS against multidrug-resistant dermatophytes, without presenting toxicity to human leucocyte cells at MIC. Significance and Impact of the Study The expressive antifungal activity of IMS, combined with the in vitro nontoxicity, makes them promising compounds for the safe and effective treatment of dermatophytoses, mainly when this skin mycosis is unresponsive to conventional drugs.
language: eng
source:
identifier: ISSN: 1364-5072 ; E-ISSN: 1365-2672 ; DOI: 10.1111/jam.12862
fulltext: fulltext
issn:
  • 13645072
  • 1364-5072
  • 13652672
  • 1365-2672
url: Link


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titleImidazolium salts with antifungal potential against multidrug-resistant dermatophytes
creatorDonato, R ; Buendchen, C ; Guez, C ; Bergamo, V ; Oliveira, Lfs ; Machado, M ; Schrekker, H ; Fuentefria, A
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ispartofJournal of Applied Microbiology, August 2015, Vol.119(2), pp.377-388
identifier
subjectClinical Isolates ; Skin ; Anions ; Drug Resistance ; Fungi ; Genotoxicity ; Leukocytes ; Chloride ; Toxicity ; Minimum Inhibitory Concentration ; Salts ; Cytotoxicity ; Cations ; Mycosis ; Antifungal Activity ; Fungicides ; Cytology ; Structure-Activity Relationships ; Drugs ; Skin ; Anions ; Cell Morphology ; Fungi ; Genotoxicity ; Chlorides ; Toxicity ; Salts ; Cytotoxicity ; Cations ; Fungicides ; Structure-Activity Relationships ; Drugs ; Plant Protection, Fungicides & Seed Treatments ; Human Diseases ; Toxicology & Environmental Safety
descriptionAims To investigate the antidermatophytic action of a complementary set imidazolium salts (IMS), determining structure-activity relationships and characterizing the IMS toxicological profiles. Methods and Results The susceptibility evaluation of 45 dermatophytic clinical isolates, treated in vitro with eleven different IMS (ionic compounds) and commercial antifungals (nonionic compounds), was performed by broth microdilution, following the standard norm of CLSI M38-A2. All dermatophytes were inhibited by IMS, where the lowest minimum inhibitory concentration (MIC) values were observed for salts with n-hexadecyl segment in the cation side chain, containing either the chloride or methanesulfonate anion. 1-n-Hexadecyl-3-methylimidazolium chloride (C sub(16)MImCl) and 1-n-hexadecyl-3-methylimidazolium methanesulfonate (C sub(16)MImMeS) acted as fungicides, even in extremely low concentrations, wherein C sub(16)MImMeS exerted this effect on 100% of the tested dermatophytes. Some of these IMS provoked evident alterations on the fungi cell morphology, causing a total cell damage of greater than or equal to 70%. Importantly, none of the screened IMS were cytotoxic, mutagenic or genotoxic to human leucocyte cells. Conclusions This report demonstrates for the first time the strong antifungal potential of IMS against multidrug-resistant dermatophytes, without presenting toxicity to human leucocyte cells at MIC. Significance and Impact of the Study The expressive antifungal activity of IMS, combined with the in vitro nontoxicity, makes them promising compounds for the safe and effective treatment of dermatophytoses, mainly when this skin mycosis is unresponsive to conventional drugs.
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titleImidazolium salts with antifungal potential against multidrug-resistant dermatophytes
descriptionAims To investigate the antidermatophytic action of a complementary set imidazolium salts (IMS), determining structure-activity relationships and characterizing the IMS toxicological profiles. Methods and Results The susceptibility evaluation of 45 dermatophytic clinical isolates, treated in vitro with eleven different IMS (ionic compounds) and commercial antifungals (nonionic compounds), was performed by broth microdilution, following the standard norm of CLSI M38-A2. All dermatophytes were inhibited by IMS, where the lowest minimum inhibitory concentration (MIC) values were observed for salts with n-hexadecyl segment in the cation side chain, containing either the chloride or methanesulfonate anion. 1-n-Hexadecyl-3-methylimidazolium chloride (C sub(16)MImCl) and 1-n-hexadecyl-3-methylimidazolium methanesulfonate (C sub(16)MImMeS) acted as fungicides, even in extremely low concentrations, wherein C sub(16)MImMeS exerted this effect on 100% of the tested dermatophytes. Some of these IMS provoked evident alterations on the fungi cell morphology, causing a total cell damage of greater than or equal to 70%. Importantly, none of the screened IMS were cytotoxic, mutagenic or genotoxic to human leucocyte cells. Conclusions This report demonstrates for the first time the strong antifungal potential of IMS against multidrug-resistant dermatophytes, without presenting toxicity to human leucocyte cells at MIC. Significance and Impact of the Study The expressive antifungal activity of IMS, combined with the in vitro nontoxicity, makes them promising compounds for the safe and effective treatment of dermatophytoses, mainly when this skin mycosis is unresponsive to conventional drugs.
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abstractAims To investigate the antidermatophytic action of a complementary set imidazolium salts (IMS), determining structure-activity relationships and characterizing the IMS toxicological profiles. Methods and Results The susceptibility evaluation of 45 dermatophytic clinical isolates, treated in vitro with eleven different IMS (ionic compounds) and commercial antifungals (nonionic compounds), was performed by broth microdilution, following the standard norm of CLSI M38-A2. All dermatophytes were inhibited by IMS, where the lowest minimum inhibitory concentration (MIC) values were observed for salts with n-hexadecyl segment in the cation side chain, containing either the chloride or methanesulfonate anion. 1-n-Hexadecyl-3-methylimidazolium chloride (C sub(16)MImCl) and 1-n-hexadecyl-3-methylimidazolium methanesulfonate (C sub(16)MImMeS) acted as fungicides, even in extremely low concentrations, wherein C sub(16)MImMeS exerted this effect on 100% of the tested dermatophytes. Some of these IMS provoked evident alterations on the fungi cell morphology, causing a total cell damage of greater than or equal to 70%. Importantly, none of the screened IMS were cytotoxic, mutagenic or genotoxic to human leucocyte cells. Conclusions This report demonstrates for the first time the strong antifungal potential of IMS against multidrug-resistant dermatophytes, without presenting toxicity to human leucocyte cells at MIC. Significance and Impact of the Study The expressive antifungal activity of IMS, combined with the in vitro nontoxicity, makes them promising compounds for the safe and effective treatment of dermatophytoses, mainly when this skin mycosis is unresponsive to conventional drugs.
doi10.1111/jam.12862
urlhttp://search.proquest.com/docview/1787981201/
date2015-08-01