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Bonincontro G, Scuderi SA, Marino A, Simonetti G. Synergistic Effect of Plant Compounds in Combination with Conventional Antimicrobials against Biofilm of Staphylococcus aureus, Pseudomonas aeruginosa, and Candida spp. Pharmaceuticals (Basel) 2023; 16:1531. [PMID: 38004397 PMCID: PMC10675371 DOI: 10.3390/ph16111531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 10/20/2023] [Accepted: 10/26/2023] [Indexed: 11/26/2023] Open
Abstract
Bacterial and fungal biofilm has increased antibiotic resistance and plays an essential role in many persistent diseases. Biofilm-associated chronic infections are difficult to treat and reduce the efficacy of medical devices. This global problem has prompted extensive research to find alternative strategies to fight microbial chronic infections. Plant bioactive metabolites with antibiofilm activity are known to be potential resources to alleviate this problem. The phytochemical screening of some medicinal plants showed different active groups, such as stilbenes, tannins, alkaloids, terpenes, polyphenolics, flavonoids, lignans, quinones, and coumarins. Synergistic effects can be observed in the interaction between plant compounds and conventional drugs. This review analyses and summarises the current knowledge on the synergistic effects of plant metabolites in combination with conventional antimicrobials against biofilms of Staphylococcus aureus, Pseudomonas aeruginosa, and Candida albicans. The synergism of conventional antimicrobials with plant compounds can modify and inhibit the mechanisms of acquired resistance, reduce undesirable effects, and obtain an appropriate therapeutic effect at lower doses. A deeper knowledge of these combinations and of their possible antibiofilm targets is needed to develop next-generation novel antimicrobials and/or improve current antimicrobials to fight drug-resistant infections attributed to biofilm.
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Affiliation(s)
- Graziana Bonincontro
- Department of Environmental Biology, Sapienza University of Rome, P.le Aldo Moro, 5, 00185 Roma, Italy;
| | - Sarah Adriana Scuderi
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D’Alcontres, 98100 Messina, Italy;
| | - Andreana Marino
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D’Alcontres, 98100 Messina, Italy;
| | - Giovanna Simonetti
- Department of Environmental Biology, Sapienza University of Rome, P.le Aldo Moro, 5, 00185 Roma, Italy;
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Balla N, Jakab Á, Kovács F, Ragyák Á, Tóth Z, Balázsi D, Forgács L, Bozó A, Al Refai F, Borman AM, Majoros L, Kovács R. Total transcriptome analysis of Candida auris planktonic cells exposed to tyrosol. AMB Express 2023; 13:81. [PMID: 37532970 PMCID: PMC10397170 DOI: 10.1186/s13568-023-01586-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 07/20/2023] [Indexed: 08/04/2023] Open
Abstract
Tyrosol, a secondary metabolite of Candida species, regulates fungal morphogenesis, and its application may represent a novel innovative therapy against emerging multi-resistant fungal superbug such as Candida auris. In the current study, the effects of tyrosol on growth, redox homeostasis, intracellular microelement contents and activities of virulence-related enzymes released by C. auris were examined. To gain further information about the effect of tyrosol exposure, we revealed gene transcriptional changes using total transcriptome sequencing (RNA-Seq). At a concentration of 15 mM, tyrosol significantly decrease the growth of fungal cells within 2 h of its addition (5.6 × 107±1.2 × 107 and 2.5 × 107±0.6 × 107 colony forming unit/mL for control and tyrosol-treated cells, respectively). Furthermore, it enhanced the release of reactive oxygen species as confirmed by a dichlorofluorescein (DCF) assay (7.3 ± 1.8 [nmol DCF (OD640)-1] versus 16.8 ± 3.9 [nmol DCF (OD640)-1]), which was coincided with elevated superoxide dismutase, catalase and glutathione peroxidase activities. Tyrosol exerted in a 37%, 25%, 34% and 55% decrease in intracellular manganese, iron, zinc and copper contents, respectively, compared to control cells. The tyrosol treatment led to a 142 and 108 differentially transcripted genes with at least a 1.5-fold increase or decrease in transcription, respectively. Genes related to iron and fatty acid metabolism as well as nucleic acid synthesis were down-regulated, whereas those related to the antioxidative defence, adhesion and oxoacid metabolic processes were up-regulated. This study shows that tyrosol significantly influences growth, intracellular physiological processes and gene transcription in C. auris, which could highly support the development of novel treatment approaches against this important pathogen.
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Affiliation(s)
- Noémi Balla
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary
- Doctoral School of Pharmaceutical Sciences, University of Debrecen, Debrecen, 4032, Hungary
| | - Ágnes Jakab
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary
- Department of Molecular Biotechnology and Microbiology, Institute of Biotechnology, Faculty of Science and Technology, University of Debrecen, Debrecen, Hungary
| | - Fruzsina Kovács
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary
- Doctoral School of Pharmaceutical Sciences, University of Debrecen, Debrecen, 4032, Hungary
| | - Ágota Ragyák
- Department of Inorganic and Analytical Chemistry, Agilent Atomic Spectroscopy Partner Laboratory, University of Debrecen, Debrecen, Hungary
| | - Zoltán Tóth
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary
| | - Dávid Balázsi
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary
- Doctoral School of Pharmaceutical Sciences, University of Debrecen, Debrecen, 4032, Hungary
| | - Lajos Forgács
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary
- Doctoral School of Pharmaceutical Sciences, University of Debrecen, Debrecen, 4032, Hungary
| | - Aliz Bozó
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary
| | - Farah Al Refai
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary
| | - Andrew M Borman
- UK National Mycology Reference Laboratory, Public Health England, Science Quarter, Southmead Hospital, Bristol, BS10 5NB, UK
- Medical Research Council Centre for Medical Mycology (MRCCMM), University of Exeter, Exeter, EX4 4QD, UK
| | - László Majoros
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary
| | - Renátó Kovács
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary.
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Catania AM, Di Ciccio P, Ferrocino I, Civera T, Cannizzo FT, Dalmasso A. Evaluation of the biofilm-forming ability and molecular characterization of dairy Bacillus spp. isolates. Front Cell Infect Microbiol 2023; 13:1229460. [PMID: 37600945 PMCID: PMC10432688 DOI: 10.3389/fcimb.2023.1229460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 07/14/2023] [Indexed: 08/22/2023] Open
Abstract
Food processing lines represents a suitable environment for bacterial biofilm formation. One of the most common biofilm-forming genera in dairy processing plants is Bacillus, which includes species that may have a negative impact on safety and/or quality of dairy products. In the current study, we evaluated the biofilm forming ability and molecular characteristics of dairy Bacillus spp. isolates (B. cereus and B. subtilis). Reference strains (B. cereus ATCC 14579 and B. subtilis NCTC 3610) were also included in the experiment. All isolates were screened by micro-titer plate (96 wells) to assess their ability to form biofilm. Then, they were tested on two common food contact surfaces (polystyrene and stainless steel) by using 6-well plates and AISI 316 stainless steel coupons. Biofilm formation, expressed as biofilm production index (BPI), was higher on polystyrene than stainless steel (except for B. cereus ATCC 14579). These observations were further confirmed by scanning electron microscopy, which allowed the microscopy observation of biofilm structure. Moreover, a possible correlation among total viable cell counts (CFU) and BPI was examined, as well as a connection among biofilm formation and bacterial cell hydrophobicity. Finally, whole genome sequencing was performed highlighting a genetic similarity among the strains belonging to the same species. The presence of selected genes involved in biofilm formation was also examined showing that strains with a greater presence of these genes were able to produce more biofilm in the tested materials. Additionally, for B. cereus strains enterotoxin genes were detected.
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Affiliation(s)
- Angela Maria Catania
- Department of Veterinary Sciences, University of Turin, Largo P. Braccini 2, Grugliasco, Turin, Italy
| | - Pierluigi Di Ciccio
- Department of Veterinary Sciences, University of Turin, Largo P. Braccini 2, Grugliasco, Turin, Italy
| | - Ilario Ferrocino
- Department of Agricultural, Forest and Food Sciences, University of Turin, Largo P. Braccini 2, Grugliasco, Turin, Italy
| | - Tiziana Civera
- Department of Veterinary Sciences, University of Turin, Largo P. Braccini 2, Grugliasco, Turin, Italy
| | | | - Alessandra Dalmasso
- Department of Veterinary Sciences, University of Turin, Largo P. Braccini 2, Grugliasco, Turin, Italy
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Viola KS, Coaguila-Llerena H, Rodrigues EM, Santos CS, Chávez-Andrade GM, Magro MG, Tanomaru-Filho M, Guerreiro-Tanomaru JM, Faria G. Different formulations of peracetic acid: effects on smear layer removal, dentine erosion, cytotoxicity and antibiofilm activity. J Appl Oral Sci 2022; 30:e20210575. [PMID: 35352771 PMCID: PMC8963393 DOI: 10.1590/1678-7757-2021-0575] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 01/06/2022] [Indexed: 11/21/2022] Open
Abstract
Objective: Methodology: Results: Conclusions:
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Júnior ACV, de Castro Nogueira Diniz Pontes M, Barbosa JP, Höfling JF, Araújo RM, Boniek D, de Resende Stoianoff MA, Andrade VS. Antibiofilm and Anti-Candidal Activities of the Extract of the Marine Sponge Agelas dispar. Mycopathologia 2021; 186:819-832. [PMID: 34564785 DOI: 10.1007/s11046-021-00591-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 08/30/2021] [Indexed: 01/22/2023]
Abstract
This study aimed to determine the antifungal and antibiofilm activities of Agelas dispar on biofilm-producing Candida species. The methanolic extract of A. dispar was obtained and the fraction Ag2 showed inhibitory activity for all 13 Candida strains tested, in concentrations ranging from 2.5 to 0.15625 mg/mL. Antifungal activity of fungicidal nature was seen between 5.0 and 0.3125 mg/mL of extract against the strains. All the strains were classified as biofilm producers. The methanolic extract Ag2 was tested at concentrations of 2.5 and 1.25 mg/mL for antibiofilm activity against the biofilm formation and maturation in all the strains of the genus Candida. Treated and untreated biofilm samples were selected for visualization using scanning electron microscopy (SEM). SEM allowed the visualization of the quantitative decrease in the microbial community, alterations of structural morphology, and destruction of both the formation and maturation of biofilms, at the cellular level. The mechanism of action of this fraction is suggested to be at the plasma membrane and/or cell wall alteration level. Therefore, the use of the methanolic extract of A. dispar may be a promising antifungal and antibiofilm therapeutic strategy against different species of the genus Candida.
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Affiliation(s)
- Antonio Carlos Vital Júnior
- Department of Microbiology and Parasitology, Center of Biosciences, Federal University of Rio Grande do Norte, UFRN, Natal, Rio Grande do Norte, Brazil
| | | | - Janaina Priscila Barbosa
- Department of Oral Diagnosis, School of Dentistry of Piracicaba, State University of Campinas, UNICAMP, Campinas, São Paulo, Brazil
| | - José Francisco Höfling
- Department of Oral Diagnosis, School of Dentistry of Piracicaba, State University of Campinas, UNICAMP, Campinas, São Paulo, Brazil
| | - Renata Mendonça Araújo
- Center of Exact and Earth Sciences, Chemistry Institute, Federal University of Rio Grande do Norte, UFRN, Natal, Rio Grande do Norte, Brazil
| | - Douglas Boniek
- Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, UFMG, Belo Horizonte, Minas Gerais, Brazil
| | | | - Vânia Sousa Andrade
- Department of Microbiology and Parasitology, Center of Biosciences, Federal University of Rio Grande do Norte, UFRN, Natal, Rio Grande do Norte, Brazil
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Atriwal T, Azeem K, Husain FM, Hussain A, Khan MN, Alajmi MF, Abid M. Mechanistic Understanding of Candida albicans Biofilm Formation and Approaches for Its Inhibition. Front Microbiol 2021; 12:638609. [PMID: 33995297 PMCID: PMC8121174 DOI: 10.3389/fmicb.2021.638609] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 03/30/2021] [Indexed: 12/18/2022] Open
Abstract
In recent years, the demand for novel antifungal therapies has increased several- folds due to its potential to treat severe biofilm-associated infections. Biofilms are made by the sessile microorganisms attached to the abiotic or biotic surfaces, enclosed in a matrix of exopolymeric substances. This results in new phenotypic characteristics and intrinsic resistance from both host immune response and antimicrobial drugs. Candida albicans biofilm is a complex association of hyphal cells that are associated with both abiotic and animal tissues. It is an invasive fungal infection and acts as an important virulent factor. The challenges linked with biofilm-associated diseases have urged scientists to uncover the factors responsible for the formation and maturation of biofilm. Several strategies have been developed that could be adopted to eradicate biofilm-associated infections. This article presents an overview of the role of C. albicans biofilm in its pathogenicity, challenges it poses and threats associated with its formation. Further, it discusses strategies that are currently available or under development targeting prostaglandins, quorum-sensing, changing surface properties of biomedical devices, natural scaffolds, and small molecule-based chemical approaches to combat the threat of C. albicans biofilm. This review also highlights the recent developments in finding ways to increase the penetration of drugs into the extracellular matrix of biofilm using different nanomaterials against C. albicans.
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Affiliation(s)
- Tanu Atriwal
- Medicinal Chemistry Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Kashish Azeem
- Medicinal Chemistry Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Fohad Mabood Husain
- Department of Food Science and Nutrition, College of Food and Agriculture Science, King Saud University, Riyadh, Saudi Arabia
| | - Afzal Hussain
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Muhammed Nadeem Khan
- Department of Tashreehul Badan, Faculty of Unani Medicine, Aligarh Muslim University, Aligarh, India
| | - Mohamed F Alajmi
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Mohammad Abid
- Medicinal Chemistry Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India
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Faria DR, Melo RC, Arita GS, Sakita KM, Rodrigues-Vendramini FAV, Capoci IRG, Becker TCA, Bonfim-Mendonça PDS, Felipe MSS, Svidzinski TIE, Kioshima ES. Fungicidal Activity of a Safe 1,3,4-Oxadiazole Derivative Against Candida albicans. Pathogens 2021; 10:pathogens10030314. [PMID: 33800117 PMCID: PMC8001722 DOI: 10.3390/pathogens10030314] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 02/17/2021] [Accepted: 03/01/2021] [Indexed: 12/30/2022] Open
Abstract
Candida albicans is the most common species isolated from nosocomial bloodstream infections. Due to limited therapeutic arsenal and increase of drug resistance, there is an urgent need for new antifungals. Therefore, the antifungal activity against C. albicans and in vivo toxicity of a 1,3,4-oxadiazole compound (LMM6) was evaluated. This compound was selected by in silico approach based on chemical similarity. LMM6 was highly effective against several clinical C. albicans isolates, with minimum inhibitory concentration values ranging from 8 to 32 µg/mL. This compound also showed synergic effect with amphotericin B and caspofungin. In addition, quantitative assay showed that LMM6 exhibited a fungicidal profile and a promising anti-biofilm activity, pointing to its therapeutic potential. The evaluation of acute toxicity indicated that LMM6 is safe for preclinical trials. No mortality and no alterations in the investigated parameters were observed. In addition, no substantial alteration was found in Hippocratic screening, biochemical or hematological analyzes. LMM6 (5 mg/kg twice a day) was able to reduce both spleen and kidneys fungal burden and further, promoted the suppresses of inflammatory cytokines, resulting in infection control. These preclinical findings support future application of LMM6 as potential antifungal in the treatment of invasive candidiasis.
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Affiliation(s)
- Daniella Renata Faria
- Laboratory of Medical Mycology, Department of Clinical Analysis and Biomedicine, State University of Maringá (UEM), Maringá, Paraná 87020-900, Brazil; (D.R.F.); (R.C.M.); (G.S.A.); (K.M.S.); (F.A.V.R.-V.); (I.R.G.C.); (P.d.S.B.-M.); (T.I.E.S.)
| | - Raquel Cabral Melo
- Laboratory of Medical Mycology, Department of Clinical Analysis and Biomedicine, State University of Maringá (UEM), Maringá, Paraná 87020-900, Brazil; (D.R.F.); (R.C.M.); (G.S.A.); (K.M.S.); (F.A.V.R.-V.); (I.R.G.C.); (P.d.S.B.-M.); (T.I.E.S.)
| | - Glaucia Sayuri Arita
- Laboratory of Medical Mycology, Department of Clinical Analysis and Biomedicine, State University of Maringá (UEM), Maringá, Paraná 87020-900, Brazil; (D.R.F.); (R.C.M.); (G.S.A.); (K.M.S.); (F.A.V.R.-V.); (I.R.G.C.); (P.d.S.B.-M.); (T.I.E.S.)
| | - Karina Mayumi Sakita
- Laboratory of Medical Mycology, Department of Clinical Analysis and Biomedicine, State University of Maringá (UEM), Maringá, Paraná 87020-900, Brazil; (D.R.F.); (R.C.M.); (G.S.A.); (K.M.S.); (F.A.V.R.-V.); (I.R.G.C.); (P.d.S.B.-M.); (T.I.E.S.)
| | - Franciele Abigail Vilugron Rodrigues-Vendramini
- Laboratory of Medical Mycology, Department of Clinical Analysis and Biomedicine, State University of Maringá (UEM), Maringá, Paraná 87020-900, Brazil; (D.R.F.); (R.C.M.); (G.S.A.); (K.M.S.); (F.A.V.R.-V.); (I.R.G.C.); (P.d.S.B.-M.); (T.I.E.S.)
| | - Isis Regina Grenier Capoci
- Laboratory of Medical Mycology, Department of Clinical Analysis and Biomedicine, State University of Maringá (UEM), Maringá, Paraná 87020-900, Brazil; (D.R.F.); (R.C.M.); (G.S.A.); (K.M.S.); (F.A.V.R.-V.); (I.R.G.C.); (P.d.S.B.-M.); (T.I.E.S.)
| | - Tania Cristina Alexandrino Becker
- Laboratory of General Pathology, Department of Basic Health Sciences, State University of Maringá, Maringá (UEM), Maringá, Paraná 87020-900, Brazil;
| | - Patrícia de Souza Bonfim-Mendonça
- Laboratory of Medical Mycology, Department of Clinical Analysis and Biomedicine, State University of Maringá (UEM), Maringá, Paraná 87020-900, Brazil; (D.R.F.); (R.C.M.); (G.S.A.); (K.M.S.); (F.A.V.R.-V.); (I.R.G.C.); (P.d.S.B.-M.); (T.I.E.S.)
| | - Maria Sueli Soares Felipe
- Program of Genomic Sciences and Biotechnology, Catholic University of Brasilia, Brasília 70790-160, Brazil;
| | - Terezinha Inez Estivalet Svidzinski
- Laboratory of Medical Mycology, Department of Clinical Analysis and Biomedicine, State University of Maringá (UEM), Maringá, Paraná 87020-900, Brazil; (D.R.F.); (R.C.M.); (G.S.A.); (K.M.S.); (F.A.V.R.-V.); (I.R.G.C.); (P.d.S.B.-M.); (T.I.E.S.)
| | - Erika Seki Kioshima
- Laboratory of Medical Mycology, Department of Clinical Analysis and Biomedicine, State University of Maringá (UEM), Maringá, Paraná 87020-900, Brazil; (D.R.F.); (R.C.M.); (G.S.A.); (K.M.S.); (F.A.V.R.-V.); (I.R.G.C.); (P.d.S.B.-M.); (T.I.E.S.)
- Correspondence: or ; Tel.: +55-44-3011-4810
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Antagonistic effect of isolated and commercially available probiotics on the growth of Candida albicans on acrylic resin denture surfaces. J Prosthet Dent 2020; 127:338-344. [PMID: 33250196 DOI: 10.1016/j.prosdent.2020.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 10/06/2020] [Accepted: 10/07/2020] [Indexed: 11/22/2022]
Abstract
STATEMENT OF PROBLEM Biofilms can be retained on dental prostheses leading to the development of infections. The indiscriminate use of antifungal drugs can result in the development of microorganisms that are resistant to these antimicrobial agents. Whether probiotics are a suitable alternative for reducing the prevalence of oral candidiasis is unclear. PURPOSE The purpose of this in vitro study was to evaluate the influence of 6 different live strains of probiotics and 2 commercially available probiotic supplements used for inhibiting the growth of Candida albicans biofilm in heat-polymerized acrylic resin denture base material and to determine whether biofilm byproducts modify the surface of specimens. MATERIAL AND METHODS Biofilms of C. albicans were formed on acrylic resin specimens in the presence of probiotics and quantified by colony-forming units (CFUs), and the surface roughness (Ra) of the specimens was assessed before and after the formation of biofilms. The CFU and roughness data were analyzed by analysis of variance and the Tukey HSD test (α=.05). RESULTS A significant decrease in the number (CFU/mL) of C. albicans cells was found when they were cultured with 4 probiotics: B. lactis (P=.045), B. longum (P<.001), L. casei (P<.001), and L. helveticus (P<.001) and with the commercially available probiotic Prolive (P=.05). The Ra of specimens decreased after exposure to different microbial biofilms (P≤.05) except in 3 experimental groups. CONCLUSIONS In general, the tested probiotics had an antagonistic effect on the growth of C. albicans, and the surface of acrylic resin was altered after exposure to biofilm byproducts.
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Antifungal Effect of Silver Nitrate on Prosthodontic Dentures. BALKAN JOURNAL OF DENTAL MEDICINE 2020. [DOI: 10.2478/bjdm-2020-0016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Summary
Background/Aim: Although there are studies about the antimicrobial activity of silver, there is no study evaluating it as a denture disinfectant. The purpose of this study was to explore the effectiveness of 6 disinfectant solutions (50% vinegar, 100% vinegar, 1% silver nitrate, 2% silver nitrate, %1 sodium hypochlorite, 0,12% chlorhexidine digluconate) in the disinfection of acrylic resin specimens contaminated in vitro by Candida albicans, as measured by residual colony-forming unit (CFU).
Material and Methods: 66 pieces of 10mmx2mm acrylic resin disc samples were prepared and incubated in 1x106 cell/ml suspension of C. albicans ATCC 18804 for 24 h (one of them as a control, n=11/group). The specimens were then transferred into tubes containing 10 ml of the tested disinfectants and kept for 10 minutes in the disinfectant. After washing with saline, the specimens were vortexed to remove the microorganisms adhered to the surfaces. Colony counting of the collected microorganisms was performed on Sabouroud dextrose medium using 10−1, 10−2 and 10−3 dilutions. The results were analysed using Kruskal-Wallis and Mann-Whitney U tests (p<0,05).
Results: The results showed that 1% sodium hypochlorite, %1 silver nitrate and 2% silver nitrate were the most effective against Candida Albicans (p<0,05), followed by 100% vinegar, 0,12% chlorhexidine digluconate and 50% vinegar (p<0,05).
Conclusions: Within the boundaries of this study, we conclude that 1% silver nitrate is a promising alternative disinfectant to 1% sodium hypochlorite and performs better compared to 0,12 % chlorhexidine gluconate, 50% and 100% vinegar.
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Kovács R, Majoros L. Fungal Quorum-Sensing Molecules: A Review of Their Antifungal Effect against Candida Biofilms. J Fungi (Basel) 2020; 6:jof6030099. [PMID: 32630687 PMCID: PMC7559060 DOI: 10.3390/jof6030099] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 06/28/2020] [Accepted: 06/30/2020] [Indexed: 01/05/2023] Open
Abstract
The number of effective therapeutic strategies against biofilms is limited; development of novel therapies is urgently needed to treat a variety of biofilm-associated infections. Quorum sensing is a special form of microbial cell-to-cell communication that is responsible for the release of numerous extracellular molecules, whose concentration is proportional with cell density. Candida-secreted quorum-sensing molecules (i.e., farnesol and tyrosol) have a pivotal role in morphogenesis, biofilm formation, and virulence. Farnesol can mediate the hyphae-to-yeast transition, while tyrosol has the opposite effect of inducing transition from the yeast to hyphal form. A number of questions regarding Candida quorum sensing remain to be addressed; nevertheless, the literature shows that farnesol and tyrosol possess remarkable antifungal and anti-biofilm effect at supraphysiological concentration. Furthermore, previous in vitro and in vivo data suggest that they may have a potent adjuvant effect in combination with certain traditional antifungal agents. This review discusses the most promising farnesol- and tyrosol-based in vitro and in vivo results, which may be a foundation for future development of novel therapeutic strategies to combat Candida biofilms.
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Affiliation(s)
- Renátó Kovács
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary;
- Faculty of Pharmacy, University of Debrecen, 4032 Debrecen, Hungary
- Correspondence: ; Tel.: +0036-52-255-425; Fax: +0036-52-255-424
| | - László Majoros
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary;
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Abstract
Fungal infections with increasing resistance to conventional therapies are a growing concern. Candida albicans is a major opportunistic yeast responsible for mucosal and invasive infections. Targeting the initial step of the infection process (i.e., C. albicans adhesion to the host cell) is a promising strategy. A wide variety of molecules can interfere with adhesion processes via an assortment of mechanisms. Herein, we focus on how small molecules disrupt biosynthesis of fungal cell wall components and membrane structure, prevent the localization of GPI-anchor proteins, inhibit production of enzymes involved in adhesion, downregulate genes encoding adhesins and competitively inhibit receptor interactions. As a result, adhesion of C. albicans to host cells is reduced, paving the way to new classes of antifungal agents.
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Ourabah A, Atmani-Kilani D, Debbache-Benaida N, Kolesova O, Azib L, Yous F, Benloukil M, Botta B, Atmani D, Simonetti G. Anti-Candida albicans biofilm activity of extracts from two selected indigenous Algerian plants: Clematis flammula and Fraxinus angustifolia. J Herb Med 2020. [DOI: 10.1016/j.hermed.2019.100319] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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13
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Chávez-Andrade GM, Tanomaru-Filho M, Basso Bernardi MI, de Toledo Leonardo R, Faria G, Guerreiro-Tanomaru JM. Antimicrobial and biofilm anti-adhesion activities of silver nanoparticles and farnesol against endodontic microorganisms for possible application in root canal treatment. Arch Oral Biol 2019; 107:104481. [DOI: 10.1016/j.archoralbio.2019.104481] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 07/10/2019] [Accepted: 07/11/2019] [Indexed: 11/29/2022]
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Physiological and Transcriptional Responses of Candida parapsilosis to Exogenous Tyrosol. Appl Environ Microbiol 2019; 85:AEM.01388-19. [PMID: 31399405 DOI: 10.1128/aem.01388-19] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Accepted: 07/31/2019] [Indexed: 12/15/2022] Open
Abstract
Tyrosol plays a key role in fungal morphogenesis and biofilm development. Also, it has a remarkable antifungal effect at supraphysiological concentrations. However, the background of the antifungal effect remains unknown, especially in the case of non-albicans Candida species such as Candida parapsilosis We examined the effect of tyrosol on growth, adhesion, redox homeostasis, virulence, as well as fluconazole susceptibility. To gain further insights into the physiological consequences of tyrosol treatment, we also determined genome-wide gene expression changes using transcriptome sequencing (RNA-Seq). A concentration of 15 mM tyrosol caused significant growth inhibition within 2 h of the addition of tyrosol, while the adhesion of yeast cells was not affected. Tyrosol increased the production of reactive oxygen species remarkably, as revealed by a dichlorofluorescein test, and it was associated with elevated superoxide dismutase, glutathione peroxidase, and catalase activities. The interaction between fluconazole and tyrosol was antagonistic. Tyrosol exposure resulted in 261 and 181 differentially expressed genes with at least a 1.5-fold increase or decrease in expression, respectively, which were selected for further study. Genes involved in ribosome biogenesis showed downregulation, while genes related to the oxidative stress response and ethanol fermentation were upregulated. In addition, tyrosol treatment upregulated the expression of efflux pump genes, including MDR1 and CDR1, and downregulated the expression of the FAD2 and FAD3 virulence genes involved in desaturated fatty acid formation. Our data demonstrate that exogenous tyrosol significantly affects the physiology and gene expression of C. parapsilosis, which could contribute to the development of treatments targeting quorum sensing in the future.IMPORTANCE Candida-secreted quorum-sensing molecules (i.e., farnesol and tyrosol) are key regulators in fungal physiology, which induce phenotypic adaptations, including morphological changes, altered biofilm formation, and synchronized expression of virulence factors. Moreover, they have a remarkable antifungal activity at supraphysiological concentrations. Limited data are available concerning the tyrosol-induced molecular and physiological effects on non-albicans Candida species such as C. parapsilosis In addition, the background of the previously observed antifungal effect caused by tyrosol remains unknown. This study reveals that tyrosol exposure enhanced the oxidative stress response and the expression of efflux pump genes, while it inhibited growth and ribosome biogenesis as well as several virulence-related genes. Metabolism was changed toward glycolysis and ethanol fermentation. Furthermore, the initial adherence was not influenced significantly in the presence of tyrosol. Our results provide several potential explanations for the previously observed antifungal effect.
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Enhancing Microalgal Biomass Productivity in Floating Photobioreactors with Semi-Permeable Membranes Grafted with 4-Hydroxyphenethyl Bromide. Macromol Res 2019. [DOI: 10.1007/s13233-020-8023-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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16
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Mehmood A, Liu G, Wang X, Meng G, Wang C, Liu Y. Fungal Quorum-Sensing Molecules and Inhibitors with Potential Antifungal Activity: A Review. Molecules 2019; 24:molecules24101950. [PMID: 31117232 PMCID: PMC6571750 DOI: 10.3390/molecules24101950] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Revised: 05/16/2019] [Accepted: 05/20/2019] [Indexed: 12/16/2022] Open
Abstract
The theory of persisting independent and isolated regarding microorganisms is no longer accepted. To survive and reproduce they have developed several communication platforms within the cells which facilitates them to adapt the surrounding environmental changes. This cell-to-cell communication is termed as quorum sensing; it relies upon the cell density and can stimulate several traits of microbes including biofilm formation, competence, and virulence factors secretion. Initially, this sophisticated mode of communication was discovered in bacteria; later, it was also confirmed in eukaryotes (fungi). As a consequence, many quorum-sensing molecules and inhibitors have been identified and characterized in various fungal species. In this review article, we will primarily focus on fungal quorum-sensing molecules and the production of inhibitors from fungal species with potential applications for combating fungal infections.
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Affiliation(s)
- Arshad Mehmood
- Beijing Advance Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University (BTBU), Beijing 100048, China.
| | - Guorong Liu
- Beijing Advance Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University (BTBU), Beijing 100048, China.
| | - Xin Wang
- Beijing Advance Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University (BTBU), Beijing 100048, China.
| | - Guannan Meng
- Beijing Advance Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University (BTBU), Beijing 100048, China.
| | - Chengtao Wang
- Beijing Advance Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University (BTBU), Beijing 100048, China.
| | - Ya Liu
- R&D Center of China Tobacco Yunnan Industrial Co. Ltd., Kunming 650202, China.
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Antimicrobial Activity of Compounds Containing Silver Nanoparticles and Calcium Glycerophosphate in Combination with Tyrosol. Indian J Microbiol 2019; 59:147-153. [PMID: 31031428 DOI: 10.1007/s12088-019-00797-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 03/11/2019] [Indexed: 01/22/2023] Open
Abstract
Nanocomposites containing antimicrobial agents and calcium phosphates have been developed. Thus, this study assessed the effects of two compounds containing silver nanoparticles (AgNPs) and β-calcium glycerophosphate (CaGP), associated or not with tyrosol (TYR), against planktonic cells and biofilms of Candida albicans and Streptococcus mutans. The nanocompounds were synthesized through chemical and 'green' processes and characterized by scanning electron microscopy. The minimum and fractional inhibitory concentrations of each compound were determined for planktonic cells. Next, 24-h single biofilms of C. albicans and S. mutans were treated for 24 h with the nanocompounds alone or in combination with TYR, and the antibiofilm effect was assessed through enumeration of colony forming units. Biofilm data were statistically examined using one-way ANOVA and the Kruskal-Wallis test (α = 0.05). The chemically synthesized nanocompound in combination with TYR demonstrated a synergistic effect against planktonic cells of C. albicans and S. mutans. For the nanocompound obtained through the 'green' route associated with TYR, a synergistic effect was observed only against C. albicans. For biofilms, only the combination obtained through the 'green' route + TYR demonstrated a synergistic effect against C. albicans. Our results may contribute to the development of oral care products containing AgNPs-CaGP and TYR to combat oral infections.
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Sebaa S, Boucherit-Otmani Z, Courtois P. Effects of tyrosol and farnesol on Candida albicans biofilm. Mol Med Rep 2019; 19:3201-3209. [PMID: 30816484 PMCID: PMC6423612 DOI: 10.3892/mmr.2019.9981] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 02/13/2019] [Indexed: 11/06/2022] Open
Abstract
The present in vitro study examined the effects of the quorum‑sensing molecules farnesol and tyrosol on the development of Candida albicans biofilm in order to elucidate their role as novel adjuvants in oral hygiene. The investigation was conducted in C. albicans ATCC 10231 and C. albicans isolates from dentures and was performed in flat‑bottomed 96‑well polystyrene plates. Yeast growth and their capacity to form biofilms were evaluated following 24 and 48 h incubations at 37˚C in Sabouraud broth supplemented with 0.001‑3 mM farnesol and/or 1‑20 mM tyrosol. Yeast growth was assessed by turbidimetry and biofilms were quantitated by crystal violet staining, under aerobic and anaerobic conditions. The viability of the fungal cells was controlled by the culture of planktonic cells and by examination of the biofilms using fluorescence microscopy following staining with fluorescein diacetate and ethidium bromide. Farnesol at 3 mM exerted a stronger action when added at the beginning of biofilm formation (>50% inhibition) than when added to preformed biofilms (<10% inhibition). Similarly, tyrosol at 20 mM had a greater effect on biofilm formation (>80% inhibition) than on preformed biofilms (<40% inhibition). Despite significant reductions in attached biomass, yeast growth varied little in the presence of the investigated molecules, as corroborated by the turbidimetry, culture of supernatants on solid culture medium followed by counting of colony‑forming units and viability tests using fluorescence microscopy. At the highest tested concentration, the molecules had a greater effect during the initial phases of biofilm formation. The effect of farnesol during anaerobiosis was not significantly different from that observed during aerobiosis, unlike that of tyrosol during anaerobiosis, which exhibited slightly reduced yeast biofilm inhibition. In conclusion, the present study demonstrated the specific anti‑biofilm effect, independent of fungicidal or fungistatic action, of farnesol and tyrosol, as tested in C. albicans ATCC 10231 and 6 strains isolated from dentures. Prior to suggesting the use of these molecules for preventive purposes in oral hygiene, further studies are required in order to clarify the metabolic pathways and cellular mechanisms involved in their antibiofilm effect, as well as the repercussions on the oral microbiome.
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Affiliation(s)
- Sarra Sebaa
- Laboratory of Physiology and Pharmacology, Université Libre de Bruxelles, B‑1070 Brussels, Belgium
| | - Zahia Boucherit-Otmani
- Laboratory of Antibiotics and Antifungals, Physico‑Chemistry, Synthesis and Biological Activity, University of Tlemcen, 13000 Tlemcen, Algeria
| | - Philippe Courtois
- Laboratory of Physiology and Pharmacology, Université Libre de Bruxelles, B‑1070 Brussels, Belgium
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Relative Abundances of Candida albicans and Candida glabrata in In Vitro Coculture Biofilms Impact Biofilm Structure and Formation. Appl Environ Microbiol 2018; 84:AEM.02769-17. [PMID: 29427422 DOI: 10.1128/aem.02769-17] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 01/26/2018] [Indexed: 12/21/2022] Open
Abstract
Candida is a member of the normal human microbiota and often resides on mucosal surfaces such as the oral cavity or the gastrointestinal tract. In addition to their commensality, Candida species can opportunistically become pathogenic if the host microbiota is disrupted or if the host immune system becomes compromised. An important factor for Candida pathogenesis is its ability to form biofilm communities. The two most medically important species-Candida albicans and Candida glabrata-are often coisolated from infection sites, suggesting the importance of Candida coculture biofilms. In this work, we report that biofilm formation of the coculture population depends on the relative ratio of starting cell concentrations of C. albicans and C. glabrata When using a starting ratio of C. albicans to C. glabrata of 1:3, ∼6.5- and ∼2.5-fold increases in biofilm biomass were observed relative to those of a C. albicans monoculture and a C. albicans/C. glabrata ratio of 1:1, respectively. Confocal microscopy analysis revealed the heterogeneity and complex structures composed of long C. albicans hyphae and C. glabrata cell clusters in the coculture biofilms, and reverse transcription-quantitative PCR (qRT-PCR) studies showed increases in the relative expression of the HWP1 and ALS3 adhesion genes in the C. albicans/C. glabrata 1:3 biofilm compared to that in the C. albicans monoculture biofilm. Additionally, only the 1:3 C. albicans/C. glabrata biofilm demonstrated an increased resistance to the antifungal drug caspofungin. Overall, the results suggest that interspecific interactions between these two fungal pathogens increase biofilm formation and virulence-related gene expression in a coculture composition-dependent manner.IMPORTANCECandida albicans and Candida glabrata are often coisolated during infection, and the occurrence of coisolation increases with increasing inflammation, suggesting possible synergistic interactions between the two Candida species in pathogenesis. During the course of an infection, the prevalence of each Candida species may change over time due to differences in metabolism and in the resistance of each species to antifungal therapies. Therefore, it is necessary to understand the dynamics between C. albicans and C. glabrata in coculture to develop better therapeutic strategies against Candida infections. Existing in vitro work has focused on understanding how an equal-part culture of C. albicans and C. glabrata impacts biofilm formation and pathogenesis. What is not understood, and what is investigated in this work, is how the composition of Candida species in coculture impacts overall biofilm formation, virulence gene expression, and the therapeutic treatment of biofilms.
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Mendes-Gouvêa CC, do Amaral JG, Fernandes RA, Fernandes GL, Gorup LF, Camargo ER, Delbem ACB, Barbosa DB. Sodium trimetaphosphate and hexametaphosphate impregnated with silver nanoparticles: characteristics and antimicrobial efficacy. BIOFOULING 2018; 34:299-308. [PMID: 29482366 DOI: 10.1080/08927014.2018.1437146] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 01/31/2018] [Indexed: 06/08/2023]
Abstract
This study aimed to synthesize and characterize materials containing silver nanoparticles (AgNP) with polyphosphates (sodium trimetaphosphate (TMP) or sodium hexametaphosphate (HMP), and evaluate their effect against Candida albicans and Streptococcus mutans. The minimum inhibitory concentration (MIC) was determined, which was followed by the quantification of the biofilm by counting colony-forming units (CFUs), the amount of metabolic activity, and the total biomass. The MICs revealed greater effectiveness of composites containing 10% Ag (TMP + Ag10% (T10) and HMP + Ag10% (H10)) against both microorganisms. It was observed that T10 and H10 reduced the formation of biofilms by 56-76% for C. albicans and by 52-94% for S. mutans for total biomass and metabolic activity. These composites promoted significant log reductions in the number of CFUs, between 0.45-1.43 log10 for C. albicans and 2.88-3.71 log10 for S. mutans (p < .001). These composites demonstrated significant antimicrobial activity, especially against S. mutans, and may be considered a potential alternative for new dental materials.
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Affiliation(s)
- Carla Corrêa Mendes-Gouvêa
- a Department of Pediatric Dentistry and Public Health, School of Dentistry Araçatuba , São Paulo State University (UNESP) , Araçatuba , Brazil
| | - Jackeline Gallo do Amaral
- a Department of Pediatric Dentistry and Public Health, School of Dentistry Araçatuba , São Paulo State University (UNESP) , Araçatuba , Brazil
| | - Renan Aparecido Fernandes
- b Department of Dental Materials and Prosthodontics, School of Dentistry Araçatuba , São Paulo State University (UNESP) , Araçatuba , Brazil
| | - Gabriela Lopes Fernandes
- b Department of Dental Materials and Prosthodontics, School of Dentistry Araçatuba , São Paulo State University (UNESP) , Araçatuba , Brazil
| | - Luiz Fernando Gorup
- c Department of Chemistry , Federal University of São Carlos (UFSCar) , São Carlos , Brazil
| | | | - Alberto Carlos Botazzo Delbem
- a Department of Pediatric Dentistry and Public Health, School of Dentistry Araçatuba , São Paulo State University (UNESP) , Araçatuba , Brazil
| | - Debora Barros Barbosa
- b Department of Dental Materials and Prosthodontics, School of Dentistry Araçatuba , São Paulo State University (UNESP) , Araçatuba , Brazil
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21
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Boral H, Metin B, Döğen A, Seyedmousavi S, Ilkit M. Overview of selected virulence attributes in Aspergillus fumigatus, Candida albicans, Cryptococcus neoformans, Trichophyton rubrum, and Exophiala dermatitidis. Fungal Genet Biol 2017; 111:92-107. [PMID: 29102684 DOI: 10.1016/j.fgb.2017.10.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 10/24/2017] [Accepted: 10/27/2017] [Indexed: 12/13/2022]
Abstract
The incidence of fungal diseases has been increasing since 1980, and is associated with excessive morbidity and mortality, particularly among immunosuppressed patients. Of the known 625 pathogenic fungal species, infections caused by the genera Aspergillus, Candida, Cryptococcus, and Trichophyton are responsible for more than 300 million estimated episodes of acute or chronic infections worldwide. In addition, a rather neglected group of opportunistic fungi known as black yeasts and their filamentous relatives cause a wide variety of recalcitrant infections in both immunocompetent and immunosuppressed hosts. This article provides an overview of selected virulence factors that are known to suppress host immunity and enhance the infectivity of these fungi.
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Affiliation(s)
- Hazal Boral
- Division of Mycology, Department of Microbiology, Faculty of Medicine, University of Çukurova, Adana, Turkey
| | - Banu Metin
- Department of Food Engineering, Faculty of Engineering and Natural Sciences, Istanbul Sabahattin Zaim University, Istanbul, Turkey
| | - Aylin Döğen
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, University of Mersin, Mersin, Turkey
| | - Seyedmojtaba Seyedmousavi
- Department of Medical Microbiology, Radboud University Medical Center, Nijmegen, The Netherlands; Invasive Fungi Research Center, Mazandaran University of Medical Sciences, Sari, Iran; Center of Excellence for Infection Biology and Antimicrobial Pharmacology, Tehran, Iran
| | - Macit Ilkit
- Division of Mycology, Department of Microbiology, Faculty of Medicine, University of Çukurova, Adana, Turkey.
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Monteiro D, Arias L, Fernandes R, Deszo da Silva L, de Castilho M, da Rosa T, Vieira A, Straioto F, Barbosa D, Delbem A. Antifungal activity of tyrosol and farnesol used in combination against Candida
species in the planktonic state or forming biofilms. J Appl Microbiol 2017. [DOI: 10.1111/jam.13513] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- D.R. Monteiro
- Graduate Program in Dentistry (GPD-Master's Degree); University of Western São Paulo (UNOESTE); Presidente Prudente São Paulo Brazil
- Department of Pediatric Dentistry and Public Health; São Paulo State University (Unesp); School of Dentistry; Araçatuba São Paulo Brazil
| | - L.S. Arias
- Department of Pediatric Dentistry and Public Health; São Paulo State University (Unesp); School of Dentistry; Araçatuba São Paulo Brazil
| | - R.A. Fernandes
- Department of Pediatric Dentistry and Public Health; São Paulo State University (Unesp); School of Dentistry; Araçatuba São Paulo Brazil
- Department of Dental Materials and Prosthodontics; São Paulo State University (Unesp); School of Dentistry; Araçatuba São Paulo Brazil
| | - L.F. Deszo da Silva
- Graduate Program in Dentistry (GPD-Master's Degree); University of Western São Paulo (UNOESTE); Presidente Prudente São Paulo Brazil
| | - M.O.V.F. de Castilho
- Graduate Program in Dentistry (GPD-Master's Degree); University of Western São Paulo (UNOESTE); Presidente Prudente São Paulo Brazil
| | - T.O. da Rosa
- Graduate Program in Dentistry (GPD-Master's Degree); University of Western São Paulo (UNOESTE); Presidente Prudente São Paulo Brazil
| | - A.P.M. Vieira
- Department of Pediatric Dentistry and Public Health; São Paulo State University (Unesp); School of Dentistry; Araçatuba São Paulo Brazil
| | - F.G. Straioto
- Graduate Program in Dentistry (GPD-Master's Degree); University of Western São Paulo (UNOESTE); Presidente Prudente São Paulo Brazil
| | - D.B. Barbosa
- Department of Dental Materials and Prosthodontics; São Paulo State University (Unesp); School of Dentistry; Araçatuba São Paulo Brazil
| | - A.C.B. Delbem
- Department of Pediatric Dentistry and Public Health; São Paulo State University (Unesp); School of Dentistry; Araçatuba São Paulo Brazil
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Kovács R, Tóth Z, Nagy F, Daróczi L, Bozó A, Majoros L. Activity of exogenous tyrosol in combination with caspofungin and micafungin against Candida parapsilosis
sessile cells. J Appl Microbiol 2017; 122:1529-1536. [DOI: 10.1111/jam.13452] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 01/30/2017] [Accepted: 03/15/2017] [Indexed: 12/11/2022]
Affiliation(s)
- R. Kovács
- Department of Medical Microbiology; Faculty of Medicine; University of Debrecen; Debrecen Hungary
| | - Z. Tóth
- Department of Medical Microbiology; Faculty of Medicine; University of Debrecen; Debrecen Hungary
| | - F. Nagy
- Department of Medical Microbiology; Faculty of Medicine; University of Debrecen; Debrecen Hungary
| | - L. Daróczi
- Department of Solid State Physics; Faculty of Science and Technology; University of Debrecen; Debrecen Hungary
| | - A. Bozó
- Department of Medical Microbiology; Faculty of Medicine; University of Debrecen; Debrecen Hungary
| | - L. Majoros
- Department of Medical Microbiology; Faculty of Medicine; University of Debrecen; Debrecen Hungary
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Hammerl R, Frank O, Hofmann T. Differential Off-line LC-NMR (DOLC-NMR) Metabolomics To Monitor Tyrosine-Induced Metabolome Alterations in Saccharomyces cerevisiae. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:3230-3241. [PMID: 28381091 DOI: 10.1021/acs.jafc.7b00975] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A novel differential off-line LC-NMR approach (DOLC-NMR) was developed to capture and quantify nutrient-induced metabolome alterations in Saccharomyces cerevisiae. Off-line coupling of HPLC separation and 1H NMR spectroscopy supported by automated comparative bucket analyses, followed by quantitative 1H NMR using ERETIC 2 (electronic reference to access in vivo concentrations), has been successfully used to quantitatively record changes in the metabolome of S. cerevisiae upon intervention with the aromatic amino acid l-tyrosine. Among the 33 metabolites identified, glyceryl succinate, tyrosol acetate, tyrosol lactate, tyrosol succinate, and N-acyl-tyrosine derivatives such as N-(1-oxooctyl)-tyrosine are reported for the first time as yeast metabolites. Depending on the chain length, N-(1-oxooctyl)-, N-(1-oxodecanyl)-, N-(1-oxododecanyl)-, N-(1-oxomyristinyl)-, N-(1-oxopalmityl)-, and N-(1-oxooleoyl)-l-tyrosine imparted a kokumi taste enhancement above their recognition thresholds ranging between 145 and 1432 μmol/L (model broth). Finally, carbon module labeling (CAMOLA) and carbon bond labeling (CABOLA) experiments with 13C6-glucose as the carbon source confirmed the biosynthetic pathway leading to the key metabolites; for example, the aliphatic side chain of N-(1-oxooctyl)-tyrosine could be shown to be generated via de novo fatty acid biosynthesis from four C2-carbon modules (acetyl-CoA) originating from glucose.
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Affiliation(s)
- Richard Hammerl
- Chair of Food Chemistry and Molecular Sensory Science, Technische Universität München , Lise-Meitner-Strasse 34, D-85354 Freising-Weihenstephan, Germany
| | - Oliver Frank
- Chair of Food Chemistry and Molecular Sensory Science, Technische Universität München , Lise-Meitner-Strasse 34, D-85354 Freising-Weihenstephan, Germany
| | - Thomas Hofmann
- Chair of Food Chemistry and Molecular Sensory Science, Technische Universität München , Lise-Meitner-Strasse 34, D-85354 Freising-Weihenstephan, Germany
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do Vale LR, Delbem A, Arias LS, Fernandes RA, Vieira A, Barbosa DB, Monteiro DR. Differential effects of the combination of tyrosol with chlorhexidine gluconate on oral biofilms. Oral Dis 2017; 23:537-541. [PMID: 28142218 DOI: 10.1111/odi.12648] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 01/18/2017] [Accepted: 01/25/2017] [Indexed: 11/27/2022]
Abstract
OBJECTIVE This study assessed the effect of tyrosol and chlorhexidine gluconate in combination against Candida albicans, Candida glabrata, and Streptococcus mutans in the planktonic state or forming biofilms in vitro. MATERIALS AND METHODS Checkerboard assays were performed for determination of minimum inhibitory concentration. Biofilms were cultivated during 24 h on specimens of acrylic resin and hydroxyapatite and treated with the drugs alone or in combination twice a day for 1 min, during 3 days. The antibiofilm effect was determined by quantification of the metabolic activity and cultivable cells. The drug combination was also applied on C. albicans to investigate its action on the number of hyphae. Data were statistically examined by two-way ANOVA and Holm-Sidak test (P < 0.05). RESULTS The effect of drug combination on planktonic cells was classified as antagonistic for C. albicans and indifferent for the other strains. Also, the drugs were ineffective against the tested biofilms. However, the drug combination showed a synergistic effect in reducing the number of hyphae by C. albicans. CONCLUSION The combination of tyrosol with chlorhexidine gluconate was only effective in reducing the number of hyphae by C. albicans, a relevant virulence factor of this species.
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Affiliation(s)
- L R do Vale
- Department of Pediatric Dentistry and Public Health, School of Dentistry, São Paulo State University (Unesp), Araçatuba, São Paulo, Brazil
| | - Acb Delbem
- Department of Pediatric Dentistry and Public Health, School of Dentistry, São Paulo State University (Unesp), Araçatuba, São Paulo, Brazil
| | - L S Arias
- Department of Pediatric Dentistry and Public Health, School of Dentistry, São Paulo State University (Unesp), Araçatuba, São Paulo, Brazil
| | - R A Fernandes
- Department of Pediatric Dentistry and Public Health, School of Dentistry, São Paulo State University (Unesp), Araçatuba, São Paulo, Brazil.,Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University (Unesp), Araçatuba, São Paulo, Brazil
| | - Apm Vieira
- Department of Pediatric Dentistry and Public Health, School of Dentistry, São Paulo State University (Unesp), Araçatuba, São Paulo, Brazil
| | - D B Barbosa
- Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University (Unesp), Araçatuba, São Paulo, Brazil
| | - D R Monteiro
- Department of Pediatric Dentistry and Public Health, School of Dentistry, São Paulo State University (Unesp), Araçatuba, São Paulo, Brazil.,Graduate Program in Dentistry (GPD - Master's Degree), University of Western São Paulo (UNOESTE), Presidente Prudente, São Paulo, Brazil
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Interspecies Interactions between Clostridium difficile and Candida albicans. mSphere 2016; 1:mSphere00187-16. [PMID: 27840850 PMCID: PMC5103046 DOI: 10.1128/msphere.00187-16] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 09/30/2016] [Indexed: 12/14/2022] Open
Abstract
Candida albicans and Clostridium difficile are two opportunistic pathogens that reside in the human gut. A few studies have focused on the prevalence of C. albicans in C. difficile-infected patients, but none have shown the interaction(s) that these two organisms may or may not have with each other. In this study, we used a wide range of different techniques to better understand this interaction at a macroscopic and microscopic level. We found that in the presence of C. albicans, C. difficile can survive under ambient aerobic conditions, which would otherwise be toxic. We also found that C. difficile affects the hypha formation of C. albicans, most likely through the excretion of p-cresol. This ultimately leads to an inability of C. albicans to form a biofilm. Our study provides new insights into interactions between C. albicans and C. difficile and bears relevance to both fungal and bacterial disease. The facultative anaerobic polymorphic fungus Candida albicans and the strictly anaerobic Gram-positive bacterium Clostridium difficile are two opportunistic pathogens residing in the human gut. While a few studies have focused on the prevalence of C. albicans in C. difficile-infected patients, the nature of the interactions between these two microbes has not been studied thus far. In the current study, both chemical and physical interactions between C. albicans and C. difficile were investigated. In the presence of C. albicans, C. difficile was able to grow under aerobic, normally toxic, conditions. This phenomenon was neither linked to adherence of bacteria to hyphae nor to biofilm formation by C. albicans. Conditioned medium of C. difficile inhibited hyphal growth of C. albicans, which is an important virulence factor of the fungus. In addition, it induced hypha-to-yeast conversion. p-Cresol, a fermentation product of tyrosine produced by C. difficile, also induced morphological effects and was identified as an active component of the conditioned medium. This study shows that in the presence of C. albicans, C. difficile can persist and grow under aerobic conditions. Furthermore, p-cresol, produced by C. difficile, is involved in inhibiting hypha formation of C. albicans, directly affecting the biofilm formation and virulence of C. albicans. This study is the first detailed characterization of the interactions between these two gut pathogens. IMPORTANCECandida albicans and Clostridium difficile are two opportunistic pathogens that reside in the human gut. A few studies have focused on the prevalence of C. albicans in C. difficile-infected patients, but none have shown the interaction(s) that these two organisms may or may not have with each other. In this study, we used a wide range of different techniques to better understand this interaction at a macroscopic and microscopic level. We found that in the presence of C. albicans, C. difficile can survive under ambient aerobic conditions, which would otherwise be toxic. We also found that C. difficile affects the hypha formation of C. albicans, most likely through the excretion of p-cresol. This ultimately leads to an inability of C. albicans to form a biofilm. Our study provides new insights into interactions between C. albicans and C. difficile and bears relevance to both fungal and bacterial disease.
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Arias LS, Delbem ACB, Fernandes RA, Barbosa DB, Monteiro DR. Activity of tyrosol against single and mixed-species oral biofilms. J Appl Microbiol 2016; 120:1240-9. [PMID: 26801208 DOI: 10.1111/jam.13070] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 12/24/2015] [Accepted: 01/18/2016] [Indexed: 11/30/2022]
Abstract
AIM This study aimed to evaluate the effect of tyrosol on the formation of single and mixed biofilms of Candida albicans ATCC 10231, Candida glabrata ATCC 90030 and Streptococcus mutans ATCC 25175 formed on acrylic resin (AR) and hydroxyapatite (HA) surfaces. METHODS AND RESULTS Single and mixed biofilms were formed on AR and HA in the presence of tyrosol at 50, 100 and 200 mmol l(-1), during 48 h. Next, antimicrobial activity was assessed through metabolic activity (XTT reduction assay) and the number of colony-forming units (CFUs). Scanning electron microscopy observations were performed in order to analyse biofilm structure. Tyrosol, mainly at 200 mmol l(-1), significantly decreased the metabolic activity and number of CFUs for all single and mixed-species biofilms formed on both surfaces. SEM images suggested cell damage caused by tyrosol. CONCLUSION Tyrosol showed inhibitory effects against biofilms formed by important oral pathogens. SIGNIFICANCE AND IMPACT OF THE STUDY This is the first study showing the antibiofilm effect of tyrosol on Candida species and Strep. mutans in single and mixed cultures. These results may be useful in the development of topical therapies focused on preventing biofilm-associated oral diseases, such as denture stomatitis and dental caries.
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Affiliation(s)
- L S Arias
- Department of Pediatric Dentistry and Public Health, Araçatuba Dental School, Univ Estadual Paulista (UNESP), Araçatuba, SP, Brazil
| | - A C B Delbem
- Department of Pediatric Dentistry and Public Health, Araçatuba Dental School, Univ Estadual Paulista (UNESP), Araçatuba, SP, Brazil
| | - R A Fernandes
- Department of Dental Materials and Prosthodontics, Araçatuba Dental School, Univ Estadual Paulista (UNESP), Araçatuba, SP, Brazil
| | - D B Barbosa
- Department of Dental Materials and Prosthodontics, Araçatuba Dental School, Univ Estadual Paulista (UNESP), Araçatuba, SP, Brazil
| | - D R Monteiro
- Department of Pediatric Dentistry and Public Health, Araçatuba Dental School, Univ Estadual Paulista (UNESP), Araçatuba, SP, Brazil
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Fernandes RA, Monteiro DR, Arias LS, Fernandes GL, Delbem ACB, Barbosa DB. Biofilm formation by Candida albicans and Streptococcus mutans in the presence of farnesol: a quantitative evaluation. BIOFOULING 2016; 32:329-338. [PMID: 26905659 DOI: 10.1080/08927014.2016.1144053] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The aim of this study was to evaluate the effect of the QS molecule farnesol on single and mixed species biofilms formed by Candida albicans and Streptococcus mutans. The anti-biofilm effect of farnesol was assessed through total biomass quantification, counting of colony forming units (CFUs) and evaluation of metabolic activity. Biofilms were also analyzed by scanning electron microscopy (SEM). It was observed that farnesol reduced the formation of single and mixed biofilms, with significant reductions of 37% to 90% and 64% to 96%, respectively, for total biomass and metabolic activity. Regarding cell viability, farnesol treatment promoted significant log reductions in the number of CFUs, ie 1.3-4.2 log10 and 0.67-5.32 log10, respectively, for single and mixed species biofilms. SEM images confirmed these results, showing decreases in the number of cells in all biofilms. In conclusion, these findings highlight the role of farnesol as an alternative agent with the potential to reduce the formation of pathogenic biofilms.
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Affiliation(s)
- Renan Aparecido Fernandes
- a Department of Pediatric Dentistry and Public Health , Aracatuba Dental School , UNESP , Araçatuba/São Paulo , Brazil
- b Department of Dental Materials and Prosthodontics , Aracatuba Dental School , UNESP , Araçatuba/São Paulo , Brazil
| | - Douglas Roberto Monteiro
- a Department of Pediatric Dentistry and Public Health , Aracatuba Dental School , UNESP , Araçatuba/São Paulo , Brazil
| | - Laís Salomão Arias
- a Department of Pediatric Dentistry and Public Health , Aracatuba Dental School , UNESP , Araçatuba/São Paulo , Brazil
| | - Gabriela Lopes Fernandes
- a Department of Pediatric Dentistry and Public Health , Aracatuba Dental School , UNESP , Araçatuba/São Paulo , Brazil
- b Department of Dental Materials and Prosthodontics , Aracatuba Dental School , UNESP , Araçatuba/São Paulo , Brazil
| | - Alberto Carlos Botazzo Delbem
- a Department of Pediatric Dentistry and Public Health , Aracatuba Dental School , UNESP , Araçatuba/São Paulo , Brazil
| | - Debora Barros Barbosa
- b Department of Dental Materials and Prosthodontics , Aracatuba Dental School , UNESP , Araçatuba/São Paulo , Brazil
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