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Sahin Z, Ozer NE, Calı A. Biofilm inhibition of denture cleaning tablets and carvacrol on denture bases produced with different techniques. Clin Oral Investig 2024; 28:413. [PMID: 38965139 PMCID: PMC11224069 DOI: 10.1007/s00784-024-05810-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Accepted: 06/28/2024] [Indexed: 07/06/2024]
Abstract
OBJECTIVES This study compares the biofilm inhibition effects of denture cleaning tablets, carvacrol, and their combined use against Candida albicans on denture bases produced with different techniques. Additionally, the surface roughness and contact angles of these denture bases were evaluated. MATERIALS AND METHODS Test samples were prepared from four different denture base materials (cold-polymerized, heat-polymerized, CAD/CAM milling, and 3D-printed). The surface roughness and contact angles of the test samples were measured using a profilometer and goniometer, respectively. For the evaluation of biofilm inhibition, samples were divided into 5 subgroups: Corega and carvacrol, separately and combined treatments, positive (inoculated with C. albicans) and negative control (non-inoculated with C. albicans, only medium). Biofilm mass was determined using the crystal violet method. An additional prepared test sample for each subgroup was examined under scanning electron microscopy (SEM). RESULTS The surface roughness values of the 3D-printed test samples were found to be statistically higher than the other groups (P < .001). The water contact angle of all test materials was not statistically different from each other (P > .001). Corega and carvacrol, separately and combined, significantly decreased the amount of biofilm on all surfaces (P < .0001). Treatment of corega alone and in combination with carvacrol to the 3D-printed material caused less C. albicans inhibition than the other groups (P < .001; P < .05). CONCLUSIONS The surface roughness values of all test groups were within the clinically acceptable threshold. Although Corega and carvacrol inhibited C. albicans biofilms, their combined use did not show a synergistic effect. CLINICAL RELEVANCE Carvacrol may be used as one of the disinfectant agents for denture cleaning due to its biofilm inhibition property.
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Affiliation(s)
- Zeynep Sahin
- Department of Prosthodontics, Faculty of Dentistry, Lokman Hekim University, Söğütözü. 2179 St., Çankaya, Ankara, 06510, Turkey.
| | - Nazire Esra Ozer
- Department of Prosthodontics, Faculty of Dentistry, Lokman Hekim University, Söğütözü. 2179 St., Çankaya, Ankara, 06510, Turkey
| | - Abdulhamit Calı
- Vocational School of Health Services, Medical Laboratory Techniques Program, Lokman Hekim University, Ankara, Turkey
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2
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Poulopoulou A, Sidiropoulou A, Sarmourli T, Zachrou E, Michailidou C, Zarras C, Vagdatli E, Massa E, Mouloudi E, Pyrpasopoulou A, Meletis G, Protonotariou E, Skoura L, Metallidis S, Karampatakis T, Katsifa E, Nikopoulou A, Louka A, Rizou A, Arvaniti K, Kouvelis V, Borman A, Roilides E, Vyzantiadis TA. Candida auris: Outbreak, surveillance and epidemiological monitoring in Northern Greece. Med Mycol 2024; 62:myae062. [PMID: 38877671 PMCID: PMC11232515 DOI: 10.1093/mmy/myae062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Revised: 05/21/2024] [Accepted: 06/13/2024] [Indexed: 06/16/2024] Open
Abstract
Candida auris is an emerging fungal pathogen associated with multi-drug resistance rates and widespread outbreaks in hospitals and healthcare units worldwide. Sequencing studies have revealed that different clonal lineages of the fungus seem to be prevalent among distinct geographical sites. The first case of C. auris in Northern Greece was reported in Thessaloniki in October 2022, almost 2 years after the first isolation in Greece (Athens 2019). The Mycology Laboratory of the Medical School of Aristotle University of Thessaloniki stands as the reference laboratory for fungal diseases in Northern Greece and a meticulous search for the yeast, in plenty of suspicious samples, has been run since 2019 in the Lab as well as a retrospective analysis of all its yeasts' collection, back to 2008, with negative results for the presence of C. auris. Here, are presented the findings concerning the outbreak and surveillance of C. auris in Northern Greece, mainly the region of Thessaloniki and the broader area of Macedonia, from October 2022 until August 2023. The isolates from Northern Greece continue to fall in Clade I and present with an almost equal and stable sensitivity profile until now.
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Affiliation(s)
- Aikaterina Poulopoulou
- Department of Microbiology, Medical School, Aristotle University of Thessaloniki, 54124, Greece
| | - Anna Sidiropoulou
- Department of Microbiology, Medical School, Aristotle University of Thessaloniki, 54124, Greece
| | - Theopisti Sarmourli
- Department of Microbiology, Medical School, Aristotle University of Thessaloniki, 54124, Greece
| | - Evaggelia Zachrou
- Department of Microbiology, Medical School, Aristotle University of Thessaloniki, 54124, Greece
| | - Chrysi Michailidou
- Department of Biopathology, Hippokratio General Hospital, Thessaloniki 54642, Greece
| | - Charalampos Zarras
- Department of Biopathology, Hippokratio General Hospital, Thessaloniki 54642, Greece
| | - Eleni Vagdatli
- Department of Biopathology, Hippokratio General Hospital, Thessaloniki 54642, Greece
| | - Eleni Massa
- ICU, Hippokratio General Hospital, Thessaloniki 54642, Greece
| | - Eleni Mouloudi
- ICU, Hippokratio General Hospital, Thessaloniki 54642, Greece
| | - Athina Pyrpasopoulou
- Infectious Diseases Unit, Hippokratio General Hospital, Thessaloniki 54642, Greece
| | - Georgios Meletis
- Department of Microbiology, AHEPA University Hospital, Medical School, Aristotle University of Thessaloniki, 54636, Greece
| | - Efthymia Protonotariou
- Department of Microbiology, AHEPA University Hospital, Medical School, Aristotle University of Thessaloniki, 54636, Greece
| | - Lemonia Skoura
- Department of Microbiology, AHEPA University Hospital, Medical School, Aristotle University of Thessaloniki, 54636, Greece
| | - Simeon Metallidis
- First Department of Internal Medicine, Infectious Diseases Division, AHEPA University Hospital, Medical School, Aristotle University of Thessaloniki, 54636, Greece
| | - Theodoros Karampatakis
- Department of Microbiology, G. Papanikolaou General Hospital, Thessaloniki 57010, Greece
| | - Eleni Katsifa
- Department of Microbiology, G. Papanikolaou General Hospital, Thessaloniki 57010, Greece
| | - Anna Nikopoulou
- Infectious Disease Unit, G. Papanikolaou General Hospital, Thessaloniki 57010, Greece
| | - Alexandra Louka
- Department of Microbiology, Mamatsio General Hospital, Kozani 50100, Greece
| | - Artemisia Rizou
- Department of Microbiology, Mamatsio General Hospital, Kozani 50100, Greece
| | | | - Vassili Kouvelis
- Section of Genetics & Biotechnology, Department of Biology, National & Kapodistrian University of Athens, 15772, Greece
| | - Andrew Borman
- Mycology Reference Laboratory, UK Health Security Agency, Southmead Hospital, Bristol BS10 5NB, UK
| | - Emmanuel Roilides
- Infectious Diseases Unit, Hippokratio General Hospital, Thessaloniki 54642, Greece
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3
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Fiala J, Roach T, Holzinger A, Husiev Y, Delueg L, Hammerle F, Armengol ES, Schöbel H, Bonnet S, Laffleur F, Kranner I, Lackner M, Siewert B. The Light-activated Effect of Natural Anthraquinone Parietin against Candida auris and Other Fungal Priority Pathogens. PLANTA MEDICA 2024; 90:588-594. [PMID: 38843798 PMCID: PMC11156500 DOI: 10.1055/a-2249-9110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 01/05/2024] [Indexed: 06/10/2024]
Abstract
Antimicrobial photodynamic therapy (aPDT) is an evolving treatment strategy against human pathogenic microbes such as the Candida species, including the emerging pathogen C. auris. Using a modified EUCAST protocol, the light-enhanced antifungal activity of the natural compound parietin was explored. The photoactivity was evaluated against three separate strains of five yeasts, and its molecular mode of action was analysed via several techniques, i.e., cellular uptake, reactive electrophilic species (RES), and singlet oxygen yield. Under experimental conditions (λ = 428 nm, H = 30 J/cm2, PI = 30 min), microbial growth was inhibited by more than 90% at parietin concentrations as low as c = 0.156 mg/L (0.55 µM) for C. tropicalis and Cryptococcus neoformans, c = 0.313 mg/L (1.10 µM) for C. auris, c = 0.625 mg/L (2.20 µM) for C. glabrata, and c = 1.250 mg/L (4.40 µM) for C. albicans. Mode-of-action analysis demonstrated fungicidal activity. Parietin targets the cell membrane and induces cell death via ROS-mediated lipid peroxidation after light irradiation. In summary, parietin exhibits light-enhanced fungicidal activity against all Candida species tested (including C. auris) and Cryptococcus neoformans, covering three of the four critical threats on the WHO's most recent fungal priority list.
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Affiliation(s)
- Johannes Fiala
- Department of Pharmacognosy, Institute of Pharmacy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Austria
| | - Thomas Roach
- Department of Botany, University of Innsbruck, Austria
| | | | - Yurii Husiev
- Leiden Institute of Chemistry, Leiden University, Netherlands
| | - Lisa Delueg
- Department of Pharmacognosy, Institute of Pharmacy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Austria
| | - Fabian Hammerle
- Department of Pharmacognosy, Institute of Pharmacy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Austria
| | - Eva Sanchez Armengol
- Department of Technology, Institute of Pharmacy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Austria
| | | | | | - Flavia Laffleur
- Department of Technology, Institute of Pharmacy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Austria
| | - Ilse Kranner
- Department of Botany, University of Innsbruck, Austria
| | - Michaela Lackner
- Institute of Hygiene und Medical Microbiology, Medical University of Innsbruck, Austria
| | - Bianka Siewert
- Department of Pharmacognosy, Institute of Pharmacy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Austria
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4
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Hleba L, Hlebová M, Charousová I. In Vitro Evaluation of Synergistic Essential Oils Combination for Enhanced Antifungal Activity against Candida spp. Life (Basel) 2024; 14:693. [PMID: 38929677 PMCID: PMC11204509 DOI: 10.3390/life14060693] [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: 04/19/2024] [Revised: 05/22/2024] [Accepted: 05/27/2024] [Indexed: 06/28/2024] Open
Abstract
In recent years, a significant number of infections have been attributed to non-albicidal Candida species (NAC), mainly due to the increasing resistance of NAC to antifungal agents. As only a few antifungal agents are available (azoles, echinocandins, polyenes, allylamines and nucleoside analogues), it is very important to look for possible alternatives to inhibit resistant fungi. One possibility could be essential oils (EOs), which have been shown to have significant antifungal and antibacterial activity. Therefore, in this study, the efficacy of 12 EOs and their combinations was evaluated against four yeasts of the genus Candida (C. albicas, C. glabrata, C. tropicalis and C. parapsilosis). GC-MS and GC-MS FID techniques were used for the chemical analysis of all EOs. VITEK-2XL was used to determine the antifungal susceptibility of the tested Candida spp. strains. The agar disc diffusion method was used for primary screening of the efficacy of the tested EOs. The broth dilution method was used to determine the minimum inhibitory concentrations (MICs) of the most potent EOs. After MIC cultivation, the minimum fungicidal concentration (MFC) was determined on Petri dishes (60 mm). The synergistic effect of combined EOs was evaluated using the checkerboard method and expressed as a fractional inhibitory concentration index (FICI). The results showed that ginger > ho-sho > absinth > dill > fennel > star anise > and cardamom were the most effective EOs. For all Candida species tested, the synergy was mainly observed in these combinations: ginger/fennel for C. albicans FICI 0.25 and C. glabrata, C. tropicalis and C. parapsilosis FICI 0.5 and absinth/fennel for C. albicans FICI 0.3125, C. tropicalis FICI 0.3125 and C. parapsilosis FICI 0.375. Our results suggest that the resistance of fungal pathogens to available antifungals could be reduced by combining appropriate EOs.
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Affiliation(s)
- Lukáš Hleba
- Institute of Biotechnology, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 94976 Nitra, Slovakia
| | - Miroslava Hlebová
- Institute of Biology and Biotechnology, Faculty of Natural Sciences, University of SS. Cyril and Methodius, Nám. J. Herdu 2, SK-91701 Trnava, Slovakia
| | - Ivana Charousová
- Clinical Microbiology Laboratory, Unilabs Slovensko, s.r.o., J. Bellu 66, SK-03495 Likavka, Slovakia
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5
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Moraes GS, Tozetto NM, Pedroso TAA, de Mattos MA, Urban AM, Paludo KS, Dos Santos FA, Neppelenbroek KH, Urban VM. Anti-Candida activity and in vitro toxicity screening of antifungals complexed with β-cyclodextrin. J Appl Toxicol 2024; 44:747-755. [PMID: 38198744 DOI: 10.1002/jat.4575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 11/23/2023] [Accepted: 12/11/2023] [Indexed: 01/12/2024]
Abstract
The emergence of resistant fungal species and the toxicity of currently available antifungal drugs are relevant issues that require special consideration. Cyclodextrins inclusion complexes could optimize the antimicrobial activity of such drugs and create a controlled release system with few side effects. This study aimed to assess the in vitro toxicity and antifungal effectiveness of nystatin (Nys) and chlorhexidine (Chx) complexed or not with β-cyclodextrin (βCD). First, a drug toxicity screening was performed through the Artemia salina bioassay. Then, the minimum inhibitory concentrations (MICs) against Candida albicans were determined with the broth microdilution test. After MICs determination, the cytotoxicity of the drugs was evaluated through the methyl-thiazolyl-tetrazolium (MTT) and neutral red (NR) assays and through cell morphology analysis. The PROBIT analysis was used to determine the median lethal concentration (LC50), and the cell viability values were submitted to one-way analysis of variance(ANOVA)/Tukey (α = 0.05). Overall, the βCD-complexed antifungals were less toxic against A. salina than their raw forms, suggesting that inclusion complexes can reduce the toxicity of drugs. The MICs obtained were as follows: Nys 0.5 mg/L; Nys:βCD 4 mg/L; Chx 4 mg/L; and Chx:βCD 8 mg/L. Chx showed significant cytotoxicity (MTT: 12.9 ± 9.6%; NR: 10.6 ± 12.5%) and promoted important morphological changes. Cells exposed to the other drugs showed viability above 70% with no cellular damage. These results suggest that antifungals complexed with βCD might be a biocompatible option for the treatment of Candida-related infections.
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Affiliation(s)
| | | | | | | | | | - Katia Sabrina Paludo
- Department of Structural, Molecular, and Genetic Biology, State University of Ponta Grossa, Ponta Grossa, Brazil
| | | | - Karin Hermana Neppelenbroek
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
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6
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Chiramba C, Möller DS, Lorenz CD, Chirombo RR, Mason AJ, Bester MJ, Gaspar ARM. Tryptophan End-Tagging Confers Antifungal Activity on a Tick-Derived Peptide by Triggering Reactive Oxygen Species Production. ACS OMEGA 2024; 9:15556-15572. [PMID: 38585074 PMCID: PMC10993377 DOI: 10.1021/acsomega.4c00478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 02/26/2024] [Accepted: 03/07/2024] [Indexed: 04/09/2024]
Abstract
WHO has identified several Candida species including Candida albicans as critical priority fungal pathogens due to greater infection prevalence and formation of recalcitrant biofilms. Novel antifungal agents are urgently needed, and antimicrobial peptides (AMPs) are being considered as potential alternatives, but inactivity in physiological salt environments, serum, and plasma often limits further therapeutic development. Tryptophan end-tagging is a strategy to overcome these limitations and is thought to selectively enhance membrane permeabilization in both fungal and bacterial plasma membranes. Here, we show that C-terminal tryptophan end-tagging of the tick-derived peptide Os-C transforms an inactive peptide into Os-C(W5), an antifungal peptide capable of preventing the formation of C. albicans biofilms. Mechanistic insight is provided by circular dichroism spectroscopy and molecular dynamics simulations, which demonstrate that tryptophan end-tagging alters the secondary structure of Os-C, while the latter reveals that end-tagging reduces interactions with, and insertion into, a model C. albicans membrane but promotes peptide aggregation on its surface. Interestingly, this leads to the induction of reactive oxygen species production rather than membrane permeabilization, and consequently, oxidative stress leads to cell wall damage. Os-C(W5) does not induce the hemolysis of human erythrocytes. Reduced cell adhesion and viability contribute to decreased biofilm extracellular matrix formation which, although reduced, is retained in the serum-containing medium. In this study, tryptophan end-tagging was identified as a promising strategy for enhancing the antifungal activity, including the biofilm inhibitory activity of Os-C against C. albicans in physiological salt environments.
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Affiliation(s)
- Court
K. Chiramba
- Department
of Biochemistry, Genetics and Microbiology, Faculty of Natural and
Agricultural Sciences, University of Pretoria, Pretoria 0002, South Africa
| | - Dalton S. Möller
- Department
of Biochemistry, Genetics and Microbiology, Faculty of Natural and
Agricultural Sciences, University of Pretoria, Pretoria 0002, South Africa
| | | | - Rumbidzai R. Chirombo
- Department
of Anatomy, Faculty of Health Sciences, University of Pretoria, Pretoria 0002, South Africa
| | - A. James Mason
- Institute
of Pharmaceutical Science, School of Cancer & Pharmaceutical Science, King’s College London, London SE1 9NH, U.K.
| | - Megan J. Bester
- Department
of Anatomy, Faculty of Health Sciences, University of Pretoria, Pretoria 0002, South Africa
| | - Anabella R. M. Gaspar
- Department
of Biochemistry, Genetics and Microbiology, Faculty of Natural and
Agricultural Sciences, University of Pretoria, Pretoria 0002, South Africa
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7
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Sabotič J, Bayram E, Ezra D, Gaudêncio SP, Haznedaroğlu BZ, Janež N, Ktari L, Luganini A, Mandalakis M, Safarik I, Simes D, Strode E, Toruńska-Sitarz A, Varamogianni-Mamatsi D, Varese GC, Vasquez MI. A guide to the use of bioassays in exploration of natural resources. Biotechnol Adv 2024; 71:108307. [PMID: 38185432 DOI: 10.1016/j.biotechadv.2024.108307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 12/05/2023] [Accepted: 01/01/2024] [Indexed: 01/09/2024]
Abstract
Bioassays are the main tool to decipher bioactivities from natural resources thus their selection and quality are critical for optimal bioprospecting. They are used both in the early stages of compounds isolation/purification/identification, and in later stages to evaluate their safety and efficacy. In this review, we provide a comprehensive overview of the most common bioassays used in the discovery and development of new bioactive compounds with a focus on marine bioresources. We present a comprehensive list of practical considerations for selecting appropriate bioassays and discuss in detail the bioassays typically used to explore antimicrobial, antibiofilm, cytotoxic, antiviral, antioxidant, and anti-ageing potential. The concept of quality control and bioassay validation are introduced, followed by safety considerations, which are critical to advancing bioactive compounds to a higher stage of development. We conclude by providing an application-oriented view focused on the development of pharmaceuticals, food supplements, and cosmetics, the industrial pipelines where currently known marine natural products hold most potential. We highlight the importance of gaining reliable bioassay results, as these serve as a starting point for application-based development and further testing, as well as for consideration by regulatory authorities.
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Affiliation(s)
- Jerica Sabotič
- Department of Biotechnology, Jožef Stefan Institute, 1000 Ljubljana, Slovenia.
| | - Engin Bayram
- Institute of Environmental Sciences, Bogazici University, Bebek, Istanbul 34342, Turkey
| | - David Ezra
- Department of Plant Pathology and Weed Research, ARO, The Volcani Institute, P.O.Box 15159, Rishon LeZion 7528809, Israel
| | - Susana P Gaudêncio
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal; UCIBIO - Applied Biomolecular Sciences Unit, Department of Chemistry, Blue Biotechnology & Biomedicine Lab, NOVA School of Science and Technology, NOVA University of Lisbon, 2819-516 Caparica, Portugal
| | - Berat Z Haznedaroğlu
- Institute of Environmental Sciences, Bogazici University, Bebek, Istanbul 34342, Turkey
| | - Nika Janež
- Department of Biotechnology, Jožef Stefan Institute, 1000 Ljubljana, Slovenia
| | - Leila Ktari
- B3Aqua Laboratory, National Institute of Marine Sciences and Technologies, Carthage University, Tunis, Tunisia
| | - Anna Luganini
- Department of Life Sciences and Systems Biology, University of Turin, 10123 Turin, Italy
| | - Manolis Mandalakis
- Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Centre for Marine Research, 71500 Heraklion, Greece
| | - Ivo Safarik
- Department of Nanobiotechnology, Biology Centre, ISBB, CAS, Na Sadkach 7, 370 05 Ceske Budejovice, Czech Republic; Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacky University, Slechtitelu 27, 783 71 Olomouc, Czech Republic
| | - Dina Simes
- Centre of Marine Sciences (CCMAR), Universidade do Algarve, 8005-139 Faro, Portugal; 2GenoGla Diagnostics, Centre of Marine Sciences (CCMAR), Universidade do Algarve, Faro, Portugal
| | - Evita Strode
- Latvian Institute of Aquatic Ecology, Agency of Daugavpils University, Riga LV-1007, Latvia
| | - Anna Toruńska-Sitarz
- Department of Marine Biology and Biotechnology, Faculty of Oceanography and Geography, University of Gdańsk, 81-378 Gdynia, Poland
| | - Despoina Varamogianni-Mamatsi
- Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Centre for Marine Research, 71500 Heraklion, Greece
| | | | - Marlen I Vasquez
- Department of Chemical Engineering, Cyprus University of Technology, 3036 Limassol, Cyprus
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8
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McHale TC, Boulware DR, Kasibante J, Ssebambulidde K, Skipper CP, Abassi M. Diagnosis and management of cryptococcal meningitis in HIV-infected adults. Clin Microbiol Rev 2023; 36:e0015622. [PMID: 38014977 PMCID: PMC10870732 DOI: 10.1128/cmr.00156-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023] Open
Abstract
Cryptococcal meningitis is a leading cause of morbidity and mortality globally, especially in people with advanced HIV disease. Cryptococcal meningitis is responsible for nearly 20% of all deaths related to advanced HIV disease, with the burden of disease predominantly experienced by people in resource-limited countries. Major advancements in diagnostics have introduced low-cost, easy-to-use antigen tests with remarkably high sensitivity and specificity. These tests have led to improved diagnostic accuracy and are essential for screening campaigns to reduce the burden of cryptococcosis. In the last 5 years, several high-quality, multisite clinical trials have led to innovations in therapeutics that have allowed for simplified regimens, which are better tolerated and result in less intensive monitoring and management of medication adverse effects. One trial found that a shorter, 7-day course of deoxycholate amphotericin B is as effective as the longer 14-day course and that flucytosine is an essential partner drug for reducing mortality in the acute phase of disease. Single-dose liposomal amphotericin B has also been found to be as effective as a 7-day course of deoxycholate amphotericin B. These findings have allowed for simpler and safer treatment regimens that also reduce the burden on the healthcare system. This review provides a detailed discussion of the latest evidence guiding the clinical management and special circumstances that make cryptococcal meningitis uniquely difficult to treat.
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Affiliation(s)
- Thomas C. McHale
- Department of Medicine, University of Minnesota, Minneapolis, Minnesota, USA
| | - David R. Boulware
- Department of Medicine, University of Minnesota, Minneapolis, Minnesota, USA
| | - John Kasibante
- Infectious Diseases Institute, Makerere University, Kampala, Uganda
| | | | - Caleb P. Skipper
- Department of Medicine, University of Minnesota, Minneapolis, Minnesota, USA
| | - Mahsa Abassi
- Department of Medicine, University of Minnesota, Minneapolis, Minnesota, USA
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Hammerle F, Fiala J, Höck A, Huymann L, Vrabl P, Husiev Y, Bonnet S, Peintner U, Siewert B. Fungal Anthraquinone Photoantimicrobials Challenge the Dogma of Cationic Photosensitizers. JOURNAL OF NATURAL PRODUCTS 2023; 86:2247-2257. [PMID: 37708055 PMCID: PMC10616806 DOI: 10.1021/acs.jnatprod.2c01157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Indexed: 09/16/2023]
Abstract
The photoantimicrobial potential of four mushroom species (i.e., Cortinarius cinnabarinus, C. holoxanthus, C. malicorius, and C. sanguineus) was explored by studying the minimal inhibitory concentrations (MIC) via a light-modified broth microdilution assay based on the recommended protocols of the European Committee on Antimicrobial Susceptibility Testing (EUCAST). The extracts were tested against Candida albicans, Escherichia coli, and Staphylococcus aureus under blue (λ = 428 and 478 nm, H = 30 J/cm2) and green light (λ = 528 nm, H = 30 J/cm2) irradiation. Three extracts showed significant photoantimicrobial effects at concentrations below 25 μg/mL. Targeted isolation of the major pigments from C. sanguineus led to the identification of two new potent photoantimicrobials, one of them (i.e., dermocybin) being active against S. aureus and C. albicans under green light irradiation [PhotoMIC530 = 39.5 μM (12.5 μg/mL) and 2.4 μM (0.75 μg/mL), respectively] and the other one (i.e., emodin) being in addition active against E. coli in a low micromolar range [PhotoMIC428 = 11.1 μM (3 μg/mL)]. Intriguingly, dermocybin was not (photo)cytotoxic against the three tested cell lines, adding an additional level of selectivity. Since both photoantimicrobials are not charged, this discovery shifts the paradigm of cationic photosensitizers.
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Affiliation(s)
- Fabian Hammerle
- Department
of Department of Pharmacognosy, Institute of Pharmacy, CCB −
Centrum of Chemistry and Biomedicine, CMBI − Center for Molecular
Biosciences, University of Innsbruck, 6020 Innsbruck, Austria
| | - Johannes Fiala
- Department
of Department of Pharmacognosy, Institute of Pharmacy, CCB −
Centrum of Chemistry and Biomedicine, CMBI − Center for Molecular
Biosciences, University of Innsbruck, 6020 Innsbruck, Austria
| | - Anja Höck
- Department
of Department of Pharmacognosy, Institute of Pharmacy, CCB −
Centrum of Chemistry and Biomedicine, CMBI − Center for Molecular
Biosciences, University of Innsbruck, 6020 Innsbruck, Austria
- Department
of Biotechnology & Food Engineering, MCI-The Entrepreneurial School, 6020 Innsbruck, Austria
| | - Lesley Huymann
- Department
of Department of Pharmacognosy, Institute of Pharmacy, CCB −
Centrum of Chemistry and Biomedicine, CMBI − Center for Molecular
Biosciences, University of Innsbruck, 6020 Innsbruck, Austria
- Institute
of Microbiology, University of Innsbruck, 6020 Innsbruck, Austria
| | - Pamela Vrabl
- Institute
of Microbiology, University of Innsbruck, 6020 Innsbruck, Austria
| | - Yurii Husiev
- Leiden
Institute of Chemistry, Leiden University, 2333CC Leiden, The Netherlands
| | - Sylvestre Bonnet
- Leiden
Institute of Chemistry, Leiden University, 2333CC Leiden, The Netherlands
| | - Ursula Peintner
- Institute
of Microbiology, University of Innsbruck, 6020 Innsbruck, Austria
| | - Bianka Siewert
- Department
of Department of Pharmacognosy, Institute of Pharmacy, CCB −
Centrum of Chemistry and Biomedicine, CMBI − Center for Molecular
Biosciences, University of Innsbruck, 6020 Innsbruck, Austria
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10
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Krishnan CS, Lyons KM, Tompkins GR, Cannon RD. Storage-related stability and antimicrobial efficacy of bottled, neutral-pH Electrolysed Oxidising Water. J Dent 2023; 137:104656. [PMID: 37567495 DOI: 10.1016/j.jdent.2023.104656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/01/2023] [Accepted: 08/08/2023] [Indexed: 08/13/2023] Open
Abstract
OBJECTIVES Denture stomatitis is prevalent in older people and poses serious health risks. Ready-to-use (RTU) neutral-pH Electrolysed Oxidizing Water (EOW) is an effective environmental disinfectant used in residential care settings and geriatric wards. However, the influence of storage on stability and effectiveness for denture disinfection has not been established. This research investigated the storage-related stability and antimicrobial activity of RTU EOW, and its efficacy against Candida albicans biofilms formed on denture resin. METHODS The pH, oxidation/reduction potential (mV), available chlorine content (mg/L) and [HOCl] (mM) of RTU EOW (Envirolyte, New Zealand) solutions (n = 22) were measured from bottle opening to 28 days following storage at 4 °C, room temperature (RT) or 37 °C. Staphylococcus aureus and C. albicans cells were incubated in 80% EOW for contact times (CTs) up to 15 min and colony-forming units (cfu) determined. Minimum inhibitory concentrations (MIC90 EOW-HOCl) after CTs up to five minutes were determined for S. aureus and C. albicans reference strains and clinical isolates. C. albicans-denture resin disc biofilms were assessed after a five-minute CT with undiluted EOW by XTT-metabolic activity assay. RESULTS [HOCl] remained stable when RTU EOW was stored at 4 °C or RT for five months after manufacture. One-minute CT resulted in log10 cfu reductions of >6 for S. aureus and >5 for C. albicans. Mean MIC90 for five-minute CT was 37 µM (S. aureus) and 54 µM (C. albicans). Undiluted EOW reduced C. albicans biofilm metabolic activity by 86%. CONCLUSIONS RTU neutral-pH EOW is stable over five-months storage and is an effective denture disinfectant. CLINICAL SIGNIFICANCE The efficacy of the RTU neutral EOW against C. albicans isolates and biofilms formed on denture resin surfaces supports its use as a denture disinfectant and can inform future research to assess its potential for preventing denture-related oral Candida infections in the older population, especially in resource-limited communities.
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Affiliation(s)
- C S Krishnan
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - K M Lyons
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - G R Tompkins
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - R D Cannon
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand.
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11
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Aydin H, Akocak S, Lolak N, Uslu U, Sait A, Korkmaz S, Parmaksiz A, Ceylan O, Aksakal A. In vitro multitarget activity of sulfadiazine substituted triazenes as antimicrobial, cytotoxic, and larvicidal agents. J Biochem Mol Toxicol 2023; 37:e23467. [PMID: 37466109 DOI: 10.1002/jbt.23467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 06/12/2023] [Accepted: 07/08/2023] [Indexed: 07/20/2023]
Abstract
Multidrug resistance (MDR) causes difficulties in the treatment of infections and cancer. Research and development studies have become increasingly important for the strategy of preventing MDR. There is a need for new multitarget drug research and advancement to reduce the development of drug resistance in drug-drug interactions and reduce cost and toxic effects. This study aimed to determine the effects of multi-target triazene compounds on antibacterial, antifungal, antiviral, cytotoxic, and larvicidal activities were investigated in vitro. A series of 12 novel of 1,3-diaryltriazene-substituted sulfadiazine (SDZ) derivatives were synthesized, and the obtained pure products characterized in detail by spectroscopic and analytic methods (FT-IR, 1 H-NMR, 13 C-NMR, and melting points). The antibacterial and antifungal activities of these derivatives (AH1-12) were determined by broth microdilution method. All derivatives have been evaluated in cell-based assays for cytotoxic and antiviral activities against Modified Vaccinia Virus Ankara. The larvicidal efficacy of these chemical compounds was also investigated by using Lucilia sericata (L. sericata) larvae. Twelve 1,3-diaryltriazene-substituted SDZ derivatives (AH1-12) were designed and developed as potent multitargeted compounds. Among them, the AH1 derivative showed the most antibacterial and antifungal activity. Besides, synthesized derivatives AH2, AH3, AH5, and AH7 showed higher antiviral activity than SDZ. All synthesized derivatives showed higher cytotoxic activity than SDZ. Also, they showed larvicidal activity at 72 h of the experiment. As a result, these compounds might be great leads for the development of next-generation multitargeted agents.
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Affiliation(s)
- Hasan Aydin
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Adıyaman University, Adıyaman, Türkiye
| | - Süleyman Akocak
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Adıyaman University, Adıyaman, Türkiye
| | - Nebih Lolak
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Adıyaman University, Adıyaman, Türkiye
| | - Uğur Uslu
- Department of Medical Microbiology, Faculty of Medicine, Selçuk University, Konya, Türkiye
| | - Ahmet Sait
- Virology Laboratory of Pendik Veterinary Control Institute, İstanbul, Türkiye
| | - Serol Korkmaz
- Virology Laboratory of Pendik Veterinary Control Institute, İstanbul, Türkiye
| | - Ayşe Parmaksiz
- Virology Laboratory of Pendik Veterinary Control Institute, İstanbul, Türkiye
| | - Onur Ceylan
- Department of Parasitology, Faculty of Veterinary Medicine, Selçuk University, Konya, Türkiye
| | - Abdulbaki Aksakal
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Adiyaman University, Adıyaman, Türkiye
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12
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Usach I, Martínez-Álvarez P, Peris JE. Topical delivery systems containing clotrimazole for the management of candidiasis: Effect of different excipients and enhanced antifungal activity of nanovesicles. Int J Pharm 2023; 644:123287. [PMID: 37536641 DOI: 10.1016/j.ijpharm.2023.123287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 06/30/2023] [Accepted: 07/31/2023] [Indexed: 08/05/2023]
Abstract
WHO classified Candida albicans as one of the four critical priority fungi for public health worldwide in 2022. Conventional topical formulations commercially available for the treatment of cutaneous candidiasis are associated with low drug bioavailability at the infection site and the lack of a sustained therapeutic effect. The main objectives of this work were to develop new topical administration systems of clotrimazole (CLT) and study the influence of surfactants on the antifungal inhibitory efficacy. Therefore, the minimum concentration of CLT required to inhibit 50 % of growth (MIC50) was determined, obtaining a value of approximately 15 ng/mL. A non-ionic emulsion type 1, Beeler base cream, hydrogel and liposomes containing CLT were designed, prepared, characterized and their antifungal activity against C. albicans was tested. CLT loaded liposomes were small in size (102 nm), homogeneous (polydispersity index = 0.3) and uncharged (+0.07 mV), showing higher antifungal activity against C. albicans than that of the commercially available cream Canesten®. Furthermore, the antifungal activity of CLT was reduced in combination with surfactants such as Tween-80/Span-80 or Brij-S10. Sodium lauryl sulphate showed a fungicidal effect that disappeared when formulated as part of the Beeler base cream.
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Affiliation(s)
- Iris Usach
- Department of Pharmacy and Pharmaceutical Technology and Parasitology, Faculty of Pharmacy, University of Valencia, Avda. V. Andrés Estellés, s/n, 46100 Burjassot, Valencia, Spain.
| | - Paula Martínez-Álvarez
- Department of Pharmacy and Pharmaceutical Technology and Parasitology, Faculty of Pharmacy, University of Valencia, Avda. V. Andrés Estellés, s/n, 46100 Burjassot, Valencia, Spain
| | - José-Esteban Peris
- Department of Pharmacy and Pharmaceutical Technology and Parasitology, Faculty of Pharmacy, University of Valencia, Avda. V. Andrés Estellés, s/n, 46100 Burjassot, Valencia, Spain
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13
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Andrade-Silva LE, Vilas-Boas A, Ferreira-Paim K, Andrade-Silva J, Santos DDA, Ferreira TB, Borges AS, Mora DJ, Melhem MDSC, Silva-Vergara ML. Genotyping Analysis of Cryptococcus deuterogattii and Correlation with Virulence Factors and Antifungal Susceptibility by the Clinical and Laboratory Standards Institute and the European Committee on Antifungal Susceptibility Testing Methods. J Fungi (Basel) 2023; 9:889. [PMID: 37754997 PMCID: PMC10532325 DOI: 10.3390/jof9090889] [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: 07/19/2023] [Revised: 08/10/2023] [Accepted: 08/14/2023] [Indexed: 09/28/2023] Open
Abstract
Data about the relationship between their molecular types, virulence factors, clinical presentation, antifungal susceptibility profile, and outcome are still limited for Cryptococcus deuterogattii. This study aimed to evaluate the molecular and phenotypic characteristics of 24 C. deuterogattii isolates from the southeast region of Brazil. The molecular characterization was performed by multilocus sequence typing (MLST). The antifungal susceptibility profile was obtained according to CLSI-M27-A3 and EUCAST-EDef 7.1 methods. The virulence factors were evaluated using classic techniques. The isolates were divided into four populations. The molecular analysis suggests recombinant events in most of the groups evaluated. Resistance and susceptibility dose-dependent to fluconazole were evidenced in four isolates (16%) by EUCAST and in four isolates (16%) by CLSI methods. The agreement at ±two dilutions for both methods was 100% for itraconazole, ketoconazole, and voriconazole, 96% for amphotericin B, and 92% for fluconazole. Significant differences in virulence factor expression and antifungal susceptibility to itraconazole and amphotericin B were found. The mixed infection could be suggested by the presence of variable sequence types, differences in virulence factor production, and decreased antifungal susceptibility in two isolates from the same patient. The data presented herein corroborate previous reports about the molecular diversity of C. deuterogattii around the world.
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Affiliation(s)
- Leonardo Euripedes Andrade-Silva
- Infectious Diseases Unit, Internal Medicine Department, Federal University of Triangulo Mineiro, Uberaba 38001-170, MG, Brazil; (A.V.-B.); (K.F.-P.); (J.A.-S.); (T.B.F.); (M.L.S.-V.)
| | - Anderson Vilas-Boas
- Infectious Diseases Unit, Internal Medicine Department, Federal University of Triangulo Mineiro, Uberaba 38001-170, MG, Brazil; (A.V.-B.); (K.F.-P.); (J.A.-S.); (T.B.F.); (M.L.S.-V.)
| | - Kennio Ferreira-Paim
- Infectious Diseases Unit, Internal Medicine Department, Federal University of Triangulo Mineiro, Uberaba 38001-170, MG, Brazil; (A.V.-B.); (K.F.-P.); (J.A.-S.); (T.B.F.); (M.L.S.-V.)
| | - Juliana Andrade-Silva
- Infectious Diseases Unit, Internal Medicine Department, Federal University of Triangulo Mineiro, Uberaba 38001-170, MG, Brazil; (A.V.-B.); (K.F.-P.); (J.A.-S.); (T.B.F.); (M.L.S.-V.)
| | - Daniel de Assis Santos
- Microbiology Department, Biological Sciences Institute, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil;
| | - Thatiana Bragine Ferreira
- Infectious Diseases Unit, Internal Medicine Department, Federal University of Triangulo Mineiro, Uberaba 38001-170, MG, Brazil; (A.V.-B.); (K.F.-P.); (J.A.-S.); (T.B.F.); (M.L.S.-V.)
| | - Aercio Sebastião Borges
- Infectious Diseases Unit, Internal Medicine Department, Federal University of Uberlândia, Uberlândia 38496-017, MG, Brazil
| | - Delio Jose Mora
- Center of Health Sciences, Federal University of Sul da Bahia, Teixeira de Freitas 85866-000, BA, Brazil;
| | | | - Mario Léon Silva-Vergara
- Infectious Diseases Unit, Internal Medicine Department, Federal University of Triangulo Mineiro, Uberaba 38001-170, MG, Brazil; (A.V.-B.); (K.F.-P.); (J.A.-S.); (T.B.F.); (M.L.S.-V.)
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14
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Bendary MM, Abd El-Hamid MI, Abousaty AI, Elmanakhly AR, Alshareef WA, Mosbah RA, Alhomrani M, Ghoneim MM, Elkelish A, Hashim N, Alamri AS, Al-Harthi HF, Safwat NA. Therapeutic Switching of Rafoxanide: a New Approach To Fighting Drug-Resistant Bacteria and Fungi. Microbiol Spectr 2023; 11:e0267922. [PMID: 37458598 PMCID: PMC10433953 DOI: 10.1128/spectrum.02679-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 06/05/2023] [Indexed: 08/19/2023] Open
Abstract
Control and management of life-threatening bacterial and fungal infections are a global health challenge. Despite advances in antimicrobial therapies, treatment failures for resistant bacterial and fungal infections continue to increase. We aimed to repurpose the anthelmintic drug rafoxanide for use with existing therapeutic drugs to increase the possibility of better managing infection and decrease treatment failures. For this purpose, we evaluated the antibacterial and antifungal potential of rafoxanide. Notably, 70% (70/100) of bacterial isolates showed multidrug resistance (MDR) patterns, with higher prevalence among human isolates (73.5% [50/68]) than animal ones (62.5% [20/32]). Moreover, 22 fungal isolates (88%) were MDR and were more prevalent among animal (88.9%) than human (87.5%) sources. We observed alarming MDR patterns among bacterial isolates, i.e., Klebsiella pneumoniae (75% [30/40; 8 animal and 22 human]) and Escherichia coli (66% [40/60; 12 animal and 28 human]), and fungal isolates, i.e., Candida albicans (86.7% [13/15; 4 animal and 9 human]) and Aspergillus fumigatus (90% [9/10; 4 animal and 5 human]), that were resistant to at least one agent in three or more different antimicrobial classes. Rafoxanide had antibacterial and antifungal activities, with minimal inhibitory concentration (MICs) ranging from 2 to 128 μg/mL. Rafoxanide at sub-MICs downregulated the mRNA expression of resistance genes, including E. coli and K. pneumoniae blaCTX-M-1, blaTEM-1, blaSHV, MOX, and DHA, C. albicans ERG11, and A. fumigatus cyp51A. We noted the improvement in the activity of β-lactam and antifungal drugs upon combination with rafoxanide. This was apparent in the reduction in the MICs of cefotaxime and fluconazole when these drugs were combined with sub-MIC levels of rafoxanide. There was obvious synergism between rafoxanide and cefotaxime against all E. coli and K. pneumoniae isolates (fractional inhibitory concentration index [FICI] values ≤ 0.5). Accordingly, there was a shift in the patterns of resistance of 16.7% of E. coli and 22.5% of K. pneumoniae isolates to cefotaxime and those of 63.2% of C. albicans and A. fumigatus isolates to fluconazole when the isolates were treated with sub-MICs of rafoxanide. These results were confirmed by in silico and mouse protection assays. Based on the in silico study, one possible explanation for how rafoxanide reduced bacterial resistance is through its inhibitory effects on bacterial and fungal histidine kinase enzymes. In short, rafoxanide exhibited promising results in overcoming bacterial and fungal drug resistance. IMPORTANCE The drug repurposing strategy is an alternative approach to reducing drug development timelines with low cost, especially during outbreaks of disease caused by drug-resistant pathogens. Rafoxanide can disrupt the abilities of bacterial and fungal cells to adapt to stress conditions. The coadministration of antibiotics with rafoxanide can prevent the failure of treatment of both resistant bacteria and fungi, as the resistant pathogens could be made sensitive upon treatment with rafoxanide. From our findings, we anticipate that pharmaceutical companies will be able to utilize new combinations against resistant pathogens.
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Affiliation(s)
- Mahmoud M. Bendary
- Department of Microbiology and Immunology, Faculty of Pharmacy, Port Said University, Port Said, Egypt
| | - Marwa I. Abd El-Hamid
- Department of Microbiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Amira I. Abousaty
- Department of Microbiology, Faculty of Science, Zagazig University, Zagazig, Egypt
| | - Arwa R. Elmanakhly
- Department of Microbiology and Immunology, Faculty of Pharmacy, Modern University for Technology and Information, Cairo, Egypt
| | - Walaa A. Alshareef
- Department of Microbiology and Immunology, Faculty of Pharmacy, October 6 University, 6th of October, Egypt
| | - Rasha A. Mosbah
- Infection Control Unit, Zagazig University Hospital, Zagazig, Egypt
| | - Majid Alhomrani
- Department of Clinical Laboratories Sciences, The Faculty of Applied Medical Science, Taif University, Taif, Saudi Arabia
- Centre of Biomedical Science Research, Deanship of Scientific Research, Taif University, Taif, Saudi Arabia
| | - Mohammed M. Ghoneim
- Department of Pharmacy Practice, College of Pharmacy, Al Maarefa University, Ad Diriyah, Saudi Arabia
| | - Amr Elkelish
- Biology Department, College of Science, Imam Mohammad ibn Saud Islamic University, Riyadh, Saudi Arabia
- Botany and Microbiology Department, Faculty of Science, Suez Canal University, Ismailia, Egypt
| | - Nada Hashim
- Faculty of Medicine, University of Gezira, Wad Medani, Sudan
| | - Abdulhakeem S. Alamri
- Department of Clinical Laboratories Sciences, The Faculty of Applied Medical Science, Taif University, Taif, Saudi Arabia
- Centre of Biomedical Science Research, Deanship of Scientific Research, Taif University, Taif, Saudi Arabia
| | - Helal F. Al-Harthi
- Biology Department, Turabah University College, Taif University, Taif, Saudi Arabia
| | - Nesreen A. Safwat
- Department of Microbiology and Immunology, Faculty of Pharmacy, Modern University for Technology and Information, Cairo, Egypt
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15
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Sosa L, Espinoza LC, Valarezo E, Bozal N, Calpena A, Fábrega MJ, Baldomà L, Rincón M, Mallandrich M. Therapeutic Applications of Essential Oils from Native and Cultivated Ecuadorian Plants: Cutaneous Candidiasis and Dermal Anti-Inflammatory Activity. Molecules 2023; 28:5903. [PMID: 37570874 PMCID: PMC10420932 DOI: 10.3390/molecules28155903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 07/28/2023] [Accepted: 07/29/2023] [Indexed: 08/13/2023] Open
Abstract
Essential oils are a complex mixture of aromatic substances whose pharmacological actions, including antimicrobial, antioxidant, anticancer, and anti-inflammatory activities, have been widely reported. This study aimed to evaluate the anti-Candida and dermal anti-inflammatory activity of essential oils from native and cultivated Ecuadorian plants. Essential oils from Bursera graveolens, Dacryodes peruviana, Mespilodaphne quixos, and Melaleuca armillaris were isolated by hydrodistillation and were characterized physically and chemically. Its tolerance was analyzed by in vitro and in vivo studies. The antifungal activity was studied against Candida albicans, Candida glabrata, and Candida parapsilosis, whereas the anti-inflammatory effect was evaluated by a mouse ear edema model. The main compounds were limonene, α-phellandrene, (E)-methyl cinnamate, and 1,8-cineole, respectively. All essential oils showed high tolerability for skin application, antifungal activity against the three Candida strains, and anti-inflammatory efficacy by decreasing edema and overexpression of pro-inflammatory cytokines. Dacryodes peruviana essential oil showed the highest antifungal activity. On the other hand, Dacryodes peruviana and Melaleuca armillaris showed the greatest anti-inflammatory potential, decreasing edema by 53.3% and 65.25%, respectively, and inhibiting the overexpression of TNF-α, IL-8, IL-17A, and IL-23. The results suggest that these essential oils could be used as alternative therapies in the treatment of both cutaneous candidiasis and dermal inflammation.
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Affiliation(s)
- Lilian Sosa
- Microbiological Research Institute (IIM), National Autonomous University of Honduras (UNAH), Tegucigalpa 11101, Honduras;
- Research Institute of Applied Sciences and Technology, National Autonomous University of Honduras (UNAH), Tegucigalpa 11101, Honduras
| | - Lupe Carolina Espinoza
- Departamento de Química, Universidad Técnica Particular de Loja, Loja 1101608, Ecuador; (L.C.E.); (E.V.)
- Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona (UB), 08028 Barcelona, Spain;
| | - Eduardo Valarezo
- Departamento de Química, Universidad Técnica Particular de Loja, Loja 1101608, Ecuador; (L.C.E.); (E.V.)
| | - Núria Bozal
- Departament de Biologia, Sanitat i Medi Ambient, Facultat de Farmàcia i Ciències de l’Alimentació, Universitat de Barcelona (UB), 08028 Barcelona, Spain;
| | - Ana Calpena
- Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona (UB), 08028 Barcelona, Spain;
- Departament Farmàcia, Tecnologia Farmacèutica, i Físicoquímica, Facultat de Farmàcia i Ciències de l’Alimentació, Universitat de Barcelona (UB), 08028 Barcelona, Spain
| | - María-José Fábrega
- Department of Experimental and Health Sciences, Parc of Biomedical Research of Barcelona, Pompeu Fabra University, 08003 Barcelona, Spain;
| | - Laura Baldomà
- Departament de Bioquímica i Fisiologia, Facultat de Farmàcia i Ciències de l’Alimentació, Universitat de Barcelona (UB), 08028 Barcelona, Spain;
| | - María Rincón
- Departament de Ciència de Materials i Química Física, Facultat de Química, Universitat de Barcelona (UB), 08028 Barcelona, Spain;
| | - Mireia Mallandrich
- Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona (UB), 08028 Barcelona, Spain;
- Departament Farmàcia, Tecnologia Farmacèutica, i Físicoquímica, Facultat de Farmàcia i Ciències de l’Alimentació, Universitat de Barcelona (UB), 08028 Barcelona, Spain
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16
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Alves V, Martins PH, Miranda B, de Andrade IB, Pereira L, Maeda CT, de Sousa Araújo GR, Frases S. Assessing the In Vitro Potential of Glatiramer Acetate (Copaxone ®) as a Chemotherapeutic Candidate for the Treatment of Cryptococcus neoformans Infection. J Fungi (Basel) 2023; 9:783. [PMID: 37623554 PMCID: PMC10455304 DOI: 10.3390/jof9080783] [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: 06/25/2023] [Revised: 07/14/2023] [Accepted: 07/19/2023] [Indexed: 08/26/2023] Open
Abstract
Cryptococcosis is a systemic mycosis affecting immunosuppressed individuals, caused by various Cryptococcus species. The current treatment utilizes a combination of antifungal drugs, but issues such as nephrotoxicity, restricted or limited availability in certain countries, and resistance limit their effectiveness. Repurposing approved drugs presents a viable strategy for developing new antifungal options. This study investigates the potential of glatiramer acetate (Copaxone®) as a chemotherapy candidate for Cryptococcus neoformans infection. Various techniques are employed to evaluate the effects of glatiramer acetate on the fungus, including microdilution, XTT analysis, electron and light microscopy, and physicochemical measurements. The results demonstrate that glatiramer acetate exhibits antifungal properties, with an IC50 of 0.470 mg/mL and a minimum inhibitory concentration (MIC) of 2.5 mg/mL. Furthermore, it promotes enhanced cell aggregation, facilitates biofilm formation, and increases the secretion of fungal polysaccharides. These findings indicate that glatiramer acetate not only shows an antifungal effect but also modulates the key virulence factor-the polysaccharide capsule. In summary, repurposing glatiramer acetate as a potential chemotherapy option offers new prospects for combating C. neoformans infection. It addresses the limitations associated with current antifungal therapies by providing an alternative treatment approach.
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Affiliation(s)
- Vinicius Alves
- Laboratório de Biofísica de Fungos, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (V.A.); (P.H.M.); (B.M.); (I.B.d.A.); (L.P.); (G.R.d.S.A.)
| | - Pedro Henrique Martins
- Laboratório de Biofísica de Fungos, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (V.A.); (P.H.M.); (B.M.); (I.B.d.A.); (L.P.); (G.R.d.S.A.)
| | - Bruna Miranda
- Laboratório de Biofísica de Fungos, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (V.A.); (P.H.M.); (B.M.); (I.B.d.A.); (L.P.); (G.R.d.S.A.)
| | - Iara Bastos de Andrade
- Laboratório de Biofísica de Fungos, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (V.A.); (P.H.M.); (B.M.); (I.B.d.A.); (L.P.); (G.R.d.S.A.)
| | - Luiza Pereira
- Laboratório de Biofísica de Fungos, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (V.A.); (P.H.M.); (B.M.); (I.B.d.A.); (L.P.); (G.R.d.S.A.)
| | - Christina Takiya Maeda
- Laboratório de Fisiopatologia, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil;
| | - Glauber Ribeiro de Sousa Araújo
- Laboratório de Biofísica de Fungos, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (V.A.); (P.H.M.); (B.M.); (I.B.d.A.); (L.P.); (G.R.d.S.A.)
| | - Susana Frases
- Laboratório de Biofísica de Fungos, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (V.A.); (P.H.M.); (B.M.); (I.B.d.A.); (L.P.); (G.R.d.S.A.)
- Rede Micologia RJ, FAPERJ, Rio de Janeiro 21941-902, Brazil
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17
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Nikitina LE, Lisovskaya S A, Gilfanov IR, Pavelyev R S, Ostolopovskaya OV, Fedyunina IV, Kiselev SV, Azizova ZR, Pestova SV, Izmest’ev ES, Rubtsova SA, Akhverdiev RF, Gerasimov AV, Sarbazyan EA, Shipina OT, Boichuk SV, Izmailov AG. Thioterpenoids of the Bornane Series with Potent Activity Against Opportunistic Micromycetes. BIONANOSCIENCE 2023. [DOI: 10.1007/s12668-023-01069-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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18
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Gonzalez-Pastor R, Carrera-Pacheco SE, Zúñiga-Miranda J, Rodríguez-Pólit C, Mayorga-Ramos A, Guamán LP, Barba-Ostria C. Current Landscape of Methods to Evaluate Antimicrobial Activity of Natural Extracts. Molecules 2023; 28:molecules28031068. [PMID: 36770734 PMCID: PMC9920787 DOI: 10.3390/molecules28031068] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/10/2023] [Accepted: 01/12/2023] [Indexed: 01/24/2023] Open
Abstract
Natural extracts have been and continue to be used to treat a wide range of medical conditions, from infectious diseases to cancer, based on their convenience and therapeutic potential. Natural products derived from microbes, plants, and animals offer a broad variety of molecules and chemical compounds. Natural products are not only one of the most important sources for innovative drug development for animal and human health, but they are also an inspiration for synthetic biology and chemistry scientists towards the discovery of new bioactive compounds and pharmaceuticals. This is particularly relevant in the current context, where antimicrobial resistance has risen as a global health problem. Thus, efforts are being directed toward studying natural compounds' chemical composition and bioactive potential to generate drugs with better efficacy and lower toxicity than existing molecules. Currently, a wide range of methodologies are used to analyze the in vitro activity of natural extracts to determine their suitability as antimicrobial agents. Despite traditional technologies being the most employed, technological advances have contributed to the implementation of methods able to circumvent issues related to analysis capacity, time, sensitivity, and reproducibility. This review produces an updated analysis of the conventional and current methods to evaluate the antimicrobial activity of natural compounds.
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Affiliation(s)
- Rebeca Gonzalez-Pastor
- Biomedical Research Center (CENBIO), Eugenio Espejo School of Health Sciences, Universidad UTE, Quito 170527, Ecuador
| | - Saskya E. Carrera-Pacheco
- Biomedical Research Center (CENBIO), Eugenio Espejo School of Health Sciences, Universidad UTE, Quito 170527, Ecuador
| | - Johana Zúñiga-Miranda
- Biomedical Research Center (CENBIO), Eugenio Espejo School of Health Sciences, Universidad UTE, Quito 170527, Ecuador
| | - Cristina Rodríguez-Pólit
- Biomedical Research Center (CENBIO), Eugenio Espejo School of Health Sciences, Universidad UTE, Quito 170527, Ecuador
| | - Arianna Mayorga-Ramos
- Biomedical Research Center (CENBIO), Eugenio Espejo School of Health Sciences, Universidad UTE, Quito 170527, Ecuador
| | - Linda P. Guamán
- Biomedical Research Center (CENBIO), Eugenio Espejo School of Health Sciences, Universidad UTE, Quito 170527, Ecuador
- Correspondence: (L.P.G.); (C.B.-O.)
| | - Carlos Barba-Ostria
- School of Medicine, College of Health Sciences, Universidad San Francisco de Quito (USFQ), Quito 170901, Ecuador
- Correspondence: (L.P.G.); (C.B.-O.)
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Plé J, Dabert M, Lecoq H, Hellé S, Ploux L, Balan L. Antimicrobial and mechanical properties of functionalized textile by nanoarchitectured photoinduced Ag@polymer coating. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2023; 14:95-109. [PMID: 36761683 PMCID: PMC9843235 DOI: 10.3762/bjnano.14.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 12/30/2022] [Indexed: 06/18/2023]
Abstract
The control of microbial proliferation is a constant battle, especially in the medical field where surfaces, equipment, and textiles need to be cleaned on a daily basis. Silver nanoparticles (AgNPs) possess well-documented antimicrobial properties and by combining them with a physical matrix, they can be applied to various surfaces to limit microbial contamination. With this in mind, a rapid and easy way to implement a photoinduced approach was investigated for textile functionalization with a silver@polymer self-assembled nanocomposite. By exposing the photosensitive formulation containing a silver precursor, a photoinitiator, and acrylic monomers to a UV source, highly reflective metallic coatings were obtained directly on the textile support. After assessing their optical and mechanical properties, the antimicrobial properties of the functionalized textiles were tested against Escherichia coli (E. coli) and Candida albicans (C. albicans) strains. In addition to being flexible and adherent to the textile substrates, the nanocomposites exhibited remarkable microbial growth inhibitory effects.
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Affiliation(s)
- Jessica Plé
- Université d’Orléans, Conditions Extrêmes Matériaux Haute Température et Irradiation CNRS UPR 3079, F-45000, Orléans, France
| | - Marine Dabert
- Université d’Orléans, Conditions Extrêmes Matériaux Haute Température et Irradiation CNRS UPR 3079, F-45000, Orléans, France
| | - Helene Lecoq
- Université d’Orléans, Conditions Extrêmes Matériaux Haute Température et Irradiation CNRS UPR 3079, F-45000, Orléans, France
| | - Sophie Hellé
- Biomaterials Bioengineering INSERM/Université de Strasbourg U1121, Centre de Recherche en Biomédecine de Strasbourg, F-67000 Strasbourg, France
- Université de Strasbourg, Faculté Dentaire, F-67000 Strasbourg, France
| | - Lydie Ploux
- Biomaterials Bioengineering INSERM/Université de Strasbourg U1121, Centre de Recherche en Biomédecine de Strasbourg, F-67000 Strasbourg, France
- Université de Strasbourg, Faculté Dentaire, F-67000 Strasbourg, France
- CNRS, F-67000 Strasbourg, France
| | - Lavinia Balan
- Université d’Orléans, Conditions Extrêmes Matériaux Haute Température et Irradiation CNRS UPR 3079, F-45000, Orléans, France
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20
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Conrad KA, Kim H, Qasim M, Djehal A, Hernday AD, Désaubry L, Rauceo JM. Triazine-Based Small Molecules: A Potential New Class of Compounds in the Antifungal Toolbox. Pathogens 2023; 12:126. [PMID: 36678474 PMCID: PMC9861074 DOI: 10.3390/pathogens12010126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/09/2023] [Accepted: 01/11/2023] [Indexed: 01/15/2023] Open
Abstract
Invasive fungal infections caused by Candida species remain a significant public health problem worldwide. The increasing prevalence of drug-resistant infections and a limited arsenal of antifungal drugs underscore the need for novel interventions. Here, we screened several classes of pharmacologically active compounds against mammalian diseases for antifungal activity. We found that the synthetic triazine-based compound melanogenin (Mel) 56 is fungicidal in Candida albicans laboratory and clinical strains with minimal inhibitory concentrations of 8−16 µg/mL. Furthermore, Mel56 has general antifungal activity in several non-albicans Candida species and the non-pathogenic yeast Saccharomyces cerevisiae. Surprisingly, Mel56 inhibited the yeast-to-hyphae transition at sublethal concentrations, revealing a new role for triazine-based compounds in fungi. In human cancer cell lines, Mel56 targets the inner mitochondrial integral membrane prohibitin proteins, PHB1 and PHB2. However, Mel56 treatment did not impact C. albicans mitochondrial activity, and antifungal activity was similar in prohibitin single, double, and triple homozygous mutant strains compared to the wild-type parental strain. These results suggests that Mel56 has a novel mechanism-of-action in C. albicans. Therefore, Mel56 is a promising antifungal candidate warranting further analyses.
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Affiliation(s)
- Karen A. Conrad
- Department of Sciences, John Jay College of the City, University of New York, New York, NY 10019, USA
| | - Hyunjeong Kim
- Department of Sciences, John Jay College of the City, University of New York, New York, NY 10019, USA
| | - Mohammad Qasim
- Department of Molecular and Cellular Biology, School of Natural Sciences, University of California, Merced, CA 95343, USA
| | - Amel Djehal
- Higher National School of Biotechnology of Constantine, Constantine 25100, Algeria
- Laboratory of Regenerative Nanomedicine, Center of Research and Biomedicine, University of Strasbourg, 67000 Strasbourg, France
| | - Aaron D. Hernday
- Department of Molecular and Cellular Biology, School of Natural Sciences, University of California, Merced, CA 95343, USA
| | - Laurent Désaubry
- Laboratory of Regenerative Nanomedicine, Center of Research and Biomedicine, University of Strasbourg, 67000 Strasbourg, France
| | - Jason M. Rauceo
- Department of Sciences, John Jay College of the City, University of New York, New York, NY 10019, USA
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21
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Evren AE, Karaduman AB, Sağlik BN, Özkay Y, Yurttaş L. Investigation of Novel Quinoline-Thiazole Derivatives as Antimicrobial Agents: In Vitro and In Silico Approaches. ACS OMEGA 2023; 8:1410-1429. [PMID: 36643421 PMCID: PMC9835529 DOI: 10.1021/acsomega.2c06871] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 12/19/2022] [Indexed: 06/17/2023]
Abstract
Infectious diseases are a major concern around the world. Today, it is an urgent need for new chemotherapeutics for infectious diseases. Because of that, our group designed, synthesized, and analyzed 14 new quinoline derivatives endowed with the pharmacophore moiety of fluoroquinolones primarily for their antimicrobial effects. Their cytotoxicity effects were tested against six bacterial and four fungal strains and NIH/3T3 cell line. Additionally, their action mechanisms were evaluated against DNA gyrase and lanosterol 14α-demethylase (LMD). Furthermore, to eliminate the potential side effects, the active compounds were evaluated against the aromatase enzyme. The experimental enzymatic results were evaluated for active compounds' binding modes using molecular docking and molecular dynamics simulation studies. The results were utilized to clarify the structure-activity relationship (SAR). Finally, compound 4m was the most potent compound for its antifungal activity with low cytotoxicity against healthy cells and fewer possible side effects, while compounds 4j and 4l can be used alone for special patients who are suffering from fungal infections in addition to the primer disease.
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Affiliation(s)
- Asaf Evrim Evren
- Department
of Pharmacy Services, Vocational School of Health Services, Bilecik Şeyh Edebali University, Bilecik 11000, Turkey
- Department
of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir 26470, Turkey
| | - Abdullah Burak Karaduman
- Department
of Pharmaceutical Toxicology, Faculty of Pharmacy, Anadolu University, Eskişehir 26470, Turkey
| | - Begüm Nurpelin Sağlik
- Department
of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir 26470, Turkey
- Central
Research Laboratory, Faculty of Pharmacy, Anadolu University, Eskişehir 26470, Turkey
| | - Yusuf Özkay
- Department
of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir 26470, Turkey
- Central
Research Laboratory, Faculty of Pharmacy, Anadolu University, Eskişehir 26470, Turkey
| | - Leyla Yurttaş
- Department
of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir 26470, Turkey
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22
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A Comparative Study of Lactarius Mushrooms: Chemical Characterization, Antibacterial, Antibiofilm, Antioxidant and Cytotoxic Activity. J Fungi (Basel) 2023; 9:jof9010070. [PMID: 36675891 PMCID: PMC9864295 DOI: 10.3390/jof9010070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 12/27/2022] [Accepted: 12/30/2022] [Indexed: 01/06/2023] Open
Abstract
Mushrooms are valued worldwide for their nutritional, organoleptic and chemical properties. The aim of this study was to determine the chemical composition (free sugars, organic acids, fatty acids, tocopherols and phenolic compounds) and bioactivity of three wild mushrooms (Lactarius piperatus, Lactarius quietus and Lactarius vellereus) from Serbia. Chemical analysis was performed with HPLC-RI and UFLC-PDA (for hydrophilic compounds) and with GC-FID and HPLC-FP (for lipophilic compounds). The analysis of phenolic compounds was performed by UFLC-DAD. Biological activities were evaluated using three different assays (microdilution, TBARS and SRB assays). The results showed that the fruiting bodies were rich in mannitol and trehalose. The main organic acids were oxalic acid and citric acid. As for lipophilic components, stearic, oleic and linoleic acids and β-tocopherol dominated in all the species studied. In addition, the methanolic and ethanolic extracts obtained showed antibacterial, antibiofilm and antioxidant properties. As for cytotoxicity, the extracts were not toxic or only moderately toxic toward different tumor cell lines. According to the results, the selected Serbian mushrooms are a rich source of bioactive compounds, and due to their good biological potential, they can be further exploited as functional ingredients beneficial to human health (antimicrobial agents, antioxidants).
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23
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Nur Onal F, Ozturk I, Aydin Kose F, Der G, Kilinc E, Baykan S. Comparative Evaluation of Polyphenol Contents and Biological Activities of Five Cistus L. Species Native to Turkey. Chem Biodivers 2023; 20:e202200915. [PMID: 36524294 DOI: 10.1002/cbdv.202200915] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 12/14/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022]
Abstract
In this study phytochemical compounds and antioxidant capacity, cytotoxic, antimicrobial and anti-biofilm activities of hydroethanolic extracts of five Cistus species (C. creticus L., C. laurifolius L., C. monspeliensis L., C. parviflorus Lam. and C. salviifolius L.) distributed in Turkey were investigated. (+)-catechin, epigallocatechin gallate, quercetin-3-O-rutinoside, quercetin-3-O-glucoside, kaempferol-3-O-glucoside, luteolin were detected in different amounts. Strongest antioxidant capacities were observed with C. creticus, and C. parvifolius (0.476 and 0.452, respectively). Minimum inhibitory concentrations (MIC) of the extracts were determined between 32 and 128 μg/mL against different bacteria and Candida strains. C. monspeliensis and C. laurifolius extracts were inhibited the biofilm production levels of three Gram-negative bacteria (E. coli, S. enterica, P. aeruginosa), two Gram-positive bacteria (S. aureus, B. subtilis) and three Candida strains (C. albicans, C. parapsilosis, C. krusei). C. creticus extract showed strongest cytotoxic activity against human breast adenocarcinoma (MCF-7) and prostate cell lines (PC-3) (IC50 : 14.04±2.78 μg/mL and 34.04±2.74 μg/mL, respectively) among all plants tested.
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Affiliation(s)
- Fatma Nur Onal
- Department of Pharmaceutical Botany, Faculty of Pharmacy, Ege University, 35040, Izmir, Turkey
| | - Ismail Ozturk
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Izmir Katip Celebi University, 35620, Izmir, Turkey
| | - Fadime Aydin Kose
- Department of Biochemistry, Faculty of Pharmacy, Izmir Katip Celebi University, 35620, Izmir, Turkey
| | - Gulay Der
- Department of Analytical Chemistry, Faculty of Pharmacy, Ege University, 35040, Izmir, Turkey
| | - Emrah Kilinc
- Department of Analytical Chemistry, Faculty of Pharmacy, Ege University, 35040, Izmir, Turkey
| | - Sura Baykan
- Department of Pharmaceutical Botany, Faculty of Pharmacy, Ege University, 35040, Izmir, Turkey
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Powerful Potential of Polyfluoroalkyl-Containing 4-Arylhydrazinylidenepyrazol-3-ones for Pharmaceuticals. MOLECULES (BASEL, SWITZERLAND) 2022; 28:molecules28010059. [PMID: 36615256 PMCID: PMC9821843 DOI: 10.3390/molecules28010059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/08/2022] [Accepted: 12/13/2022] [Indexed: 12/24/2022]
Abstract
4-Arylhydrazinylidene-5-(polyfluoroalkyl)pyrazol-3-ones (4-AHPs) were found to be obtained by the regiospecific cyclization of 2-arylhydrazinylidene-3-(polyfluoroalkyl)-3-oxoesters with hydrazines, by the azo coupling of 4-nonsubstituted pyrazol-5-oles with aryldiazonium chlorides or by the firstly discovered acid-promoted self-condensation of 2-arylhydrazinylidene-3-oxoesters. All the 4-AHPs had an acceptable ADME profile. Varying the substituents in 4-AHPs promoted the switching or combining of their biological activity. The polyfluoroalkyl residue in 4-AHPs led to the appearance of an anticarboxylesterase action in the micromolar range. An NH-fragment and/or methyl group instead of the polyfluoroalkyl one in the 4-AHPs promoted antioxidant properties in the ABTS, FRAP and ORAC tests, as well as anti-cancer activity against HeLa that was at the Doxorubicin level coupled with lower cytotoxicity against normal human fibroblasts. Some Ph-N-substituted 4-AHPs could inhibit the growth of N. gonorrhoeae bacteria at MIC 0.9 μg/mL. The possibility of using 4-AHPs for cell visualization was shown. Most of the 4-AHPs exhibited a pronounced analgesic effect in a hot plate test in vivo at and above the diclofenac and metamizole levels except for the ones with two chlorine atoms in the aryl group. The methylsulfonyl residue was proved to raise the anti-inflammatory effect also. A mechanism of the antinociceptive action of the 4-AHPs through blocking the TRPV1 receptor was proposed and confirmed using in vitro experiment and molecular docking.
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25
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In Vitro and In Silico Evaluation of the Antimicrobial and Antioxidant Potential of Thymus pulegioides Essential Oil. Antioxidants (Basel) 2022; 11:antiox11122472. [PMID: 36552681 PMCID: PMC9774620 DOI: 10.3390/antiox11122472] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 12/08/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
The study was designed to analyze and evaluate the antioxidant and antibacterial properties of the essential oils of Thymus pulegioides L. grown in Western Romania. Thymus pulegioides L. essential oil (TPEO) was extracted by steam distillation (0.71% v/w) using a Craveiro-type apparatus. GC-MS investigation of the TPEO identified 39 different compounds, representing 98.46% of total oil. Findings revealed that thymol (22.89%) is the main compound of TPEO, followed by para-cymene (14.57%), thymol methyl ether (11.19%), isothymol methyl ether (10.45%), and beta-bisabolene (9.53%). The oil exhibits good antibacterial effects; C. parapsilosis, C. albicans, S. pyogenes, and S. aureus were the most sensitive strains. The antioxidant activity of TPEO was evaluated by peroxide and thiobarbituric acid value, 1,1-diphenyl-2-picrylhydrazyl radical (DPPH), [2,2′-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium] (ABTS) radical scavenging assay, and beta-carotene/linoleic acid bleaching testing. The antioxidative data recorded reveal, for the first time, that TPEO inhibits primary and secondary oxidation products, in some particular conditions, better than butylated hydroxyanisole (BHA) with significant statistical difference (p < 0.05). Moreover, TPEO antioxidant capabilities in DPPH and ABTS assays outperformed alpha-tocopherol (p < 0.001) and delta-tocopherol (p < 0.001). Molecular docking analysis revealed that one potential target correlated with the TPEO antimicrobial activity was d-alanine-d-alanine ligase (DDl). The best scoring ligand, linalyl anthranilate, shared highly similar binding patterns with the DDl native inhibitor. Furthermore, molecular docking analysis also showed that the main constituents of TPEO are good candidates for xanthine oxidase and lipoxygenase inhibition, making the essential oil a valuable source for protein-targeted antioxidant compounds. Consequently, TPEO may represent a new potential source of antioxidant and antibacterial agents with applicability in the food and pharmaceutic industries.
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26
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Fayed EA, Ebrahim MA, Fathy U, Saeed HSE, Khalaf WS. Evaluation of quinoxaline derivatives as potential ergosterol biosynthesis inhibitors: design, synthesis, ADMET, molecular docking studies, and antifungal activities. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133578] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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27
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Sung W, Lu S, Chen Y, Pan C, Hsiao H. Inhibition of individual and combination of cell free supernatants of phenyllactic acid, pediocin‐ and nisin‐producing lactic acid bacteria against food pathogens and bread spoilage molds. J Food Saf 2022. [DOI: 10.1111/jfs.13020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wen‐Chieh Sung
- Department of Food Science National Taiwan Ocean University Keelung Taiwan, ROC
- Center of Excellence for the Oceans National Taiwan Ocean University Keelung Taiwan, ROC
| | - Szu‐Hsaun Lu
- Department of Food Science National Taiwan Ocean University Keelung Taiwan, ROC
| | - Yi‐Chen Chen
- Department of Food Science National Taiwan Ocean University Keelung Taiwan, ROC
| | - Chorng‐Liang Pan
- Department of Food Science National Taiwan Ocean University Keelung Taiwan, ROC
| | - Hsin‐I Hsiao
- Department of Food Science National Taiwan Ocean University Keelung Taiwan, ROC
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28
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Biliuta G, Bostănaru-Iliescu AC, Mareș M, Pavlov-Enescu C, Năstasă V, Burduniuc O, Coseri S. Antibacterial and Antifungal Silver Nanoparticles with Tunable Size Embedded in Various Cellulose-Based Matrices. Molecules 2022; 27:molecules27196680. [PMID: 36235217 PMCID: PMC9573117 DOI: 10.3390/molecules27196680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 09/30/2022] [Accepted: 10/04/2022] [Indexed: 11/07/2022] Open
Abstract
The aim of this study was to synthesize silver nanoparticles (AgNPs) using cellulose derivatives and to evaluate their antimicrobial potential. As effective reducing and stabilizing agents for AgNPs, cellulose derivatives, such as hydroxypropyl cellulose (HPC), methylcellulose (MC), ethylcellulose (EC), and cellulose acetate (CA), were used. Their ability to reduce silver ions as well as the size of the resulting AgNPs were compared. The formation and stability of the reduced AgNPs in the solution were monitored using UV-Vis analysis. The size, morphology, and charge of the AgNPs were evaluated. We found that, when using cellulosic derivatives, AgNPs with sizes ranging from 17 to 89 nm and different stabilities were obtained. The parameters, such as size and ζ potential indicate the stability of AgNPs, with AgNPs-CA and AgNPs-HPC being considered more stable than AgNPs-EC and AgNPs-MC since they show higher ζ potential values. In addition, the AgNPs showed antimicrobial activity against all reference strains and clinical isolates. MIC values between 0.0312 and 0.125 mM had a bactericidal effect on both Gram-positive and Gram-negative bacteria. The fungicidal effect was obtained at a MIC value of 0.125 mM. These results may provide rational support in the design of medical gauze products, including gauze pads, rolls, and sponges.
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Affiliation(s)
- Gabriela Biliuta
- Polyaddition and Photochemistry Laboratory, “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Andra-Cristina Bostănaru-Iliescu
- Laboratory of Antimicrobial Chemotherapy, Faculty of Veterinary Medicine, “Ion Ionescu de la Brad” University of Life Sciences of Iasi (IULS), 8 Mihail Sadoveanu Alley, 700489 Iasi, Romania
- Correspondence: (A.-C.B.-I.); (S.C.); Tel.: +40-232-217454 (S.C.)
| | - Mihai Mareș
- Laboratory of Antimicrobial Chemotherapy, Faculty of Veterinary Medicine, “Ion Ionescu de la Brad” University of Life Sciences of Iasi (IULS), 8 Mihail Sadoveanu Alley, 700489 Iasi, Romania
| | - Carla Pavlov-Enescu
- Laboratory of Antimicrobial Chemotherapy, Faculty of Veterinary Medicine, “Ion Ionescu de la Brad” University of Life Sciences of Iasi (IULS), 8 Mihail Sadoveanu Alley, 700489 Iasi, Romania
| | - Valentin Năstasă
- Laboratory of Antimicrobial Chemotherapy, Faculty of Veterinary Medicine, “Ion Ionescu de la Brad” University of Life Sciences of Iasi (IULS), 8 Mihail Sadoveanu Alley, 700489 Iasi, Romania
| | - Olga Burduniuc
- Discipline of Microbiology and Immunology, “Nicolae Testemițanu” State University of Medicine and Pharmacy, Bd. Stefan Cel Mare și Sfant 165, 2001 Chisinau, Moldova
- Departament of the Laboratory Diagnosis in Public Health, National Agency for Public Health, 67A Gheorghe Asachi, 2028 Chisinau, Moldova
| | - Sergiu Coseri
- Polyaddition and Photochemistry Laboratory, “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania
- Correspondence: (A.-C.B.-I.); (S.C.); Tel.: +40-232-217454 (S.C.)
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29
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Evaluation of Physically and/or Chemically Modified Chitosan Hydrogels for Proficient Release of Insoluble Nystatin in Simulated Fluids. Gels 2022; 8:gels8080495. [PMID: 36005096 PMCID: PMC9407202 DOI: 10.3390/gels8080495] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 08/06/2022] [Accepted: 08/08/2022] [Indexed: 11/17/2022] Open
Abstract
To avoid fungal spreading in the bloodstream and internal organs, many research efforts concentrate on finding appropriate candidiasis treatment from the initial stage. This paper proposes chitosan-based physically or chemically cross-linked hydrogels aimed to provide sustained release of micronized nystatin (NYSm) antifungal drug, known for its large activity spectrum. Nystatin was demonstrated itself to provide hydrodynamic/mechanic stability to the chitosan hydrogel through hydrophobic interactions and H-bonds. For chemical cross-linking of the succinylated chitosan, a non-toxic diepoxy-functionalized siloxane compound was used. The chemical structure and composition of the hydrogels, also their morphology, were evidenced by infrared spectroscopy (FTIR), by energy dispersive X-ray (EDX) analysis and by scanning electron microscopy (SEM), respectively. The hydrogels presented mechanical properties which mimic those of the soft tissues (elastic moduli < 1 MPa), necessary to ensure matrix accommodation and bioadhesion. Maximum swelling capacities were reached by the hydrogels with higher succinic anhydride content at both pH 7.4 (429%) and pH 4.2 (471%), while higher amounts of nystatin released in the simulative immersion media (57% in acidic pH and 51% in pH 7.4) occurred from the physical cross-linked hydrogel. The release mechanism by non-swellable matrix diffusion and the susceptibility of three Candida strains make all the hydrogel formulations effective for NYSm local delivery and for combating fungal infections.
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30
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Kostić M, Ivanov M, Markovic T, Sanković Babić S, Barros L, Calhelha R, Sokovic M, Ciric A. An in vitro study of the origanum minutiflorum O. Schwarz & P. H. Davis and Coriandrum sativum L. essential oils as chronic tonsillitis therapeutics: antibacterial, antibiofilm, antioxidant, and cytotoxic activities. JOURNAL OF ESSENTIAL OIL RESEARCH 2022. [DOI: 10.1080/10412905.2022.2107103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Marina Kostić
- Department of Plant Physiology, University of Belgrade, Institute for Biological Research “Siniša Stanković” - National Institute of Republic of Serbia, Belgrade, Serbia
| | - Marija Ivanov
- Department of Plant Physiology, University of Belgrade, Institute for Biological Research “Siniša Stanković” - National Institute of Republic of Serbia, Belgrade, Serbia
| | - Tatjana Markovic
- Institute for Medicinal Plant Research “dr Josif Pančić” Belgrade, Belgrade, Serbia
| | | | - Lillian Barros
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de BragançaCampus de Santa Apolónia, Bragança, Portugal
| | - Ricardo Calhelha
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de BragançaCampus de Santa Apolónia, Bragança, Portugal
| | - Marina Sokovic
- Department of Plant Physiology, University of Belgrade, Institute for Biological Research “Siniša Stanković” - National Institute of Republic of Serbia, Belgrade, Serbia
| | - Ana Ciric
- Department of Plant Physiology, University of Belgrade, Institute for Biological Research “Siniša Stanković” - National Institute of Republic of Serbia, Belgrade, Serbia
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Migliaccio A, Stabile M, Bagattini M, Triassi M, Berisio R, De Gregorio E, Zarrilli R. Resveratrol Reverts Tolerance and Restores Susceptibility to Chlorhexidine and Benzalkonium in Gram-Negative Bacteria, Gram-Positive Bacteria and Yeasts. Antibiotics (Basel) 2022; 11:antibiotics11070961. [PMID: 35884215 PMCID: PMC9311544 DOI: 10.3390/antibiotics11070961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 07/13/2022] [Accepted: 07/15/2022] [Indexed: 11/16/2022] Open
Abstract
The spread of microorganisms causing health-care associated infection (HAI) is contributed to by their intrinsic tolerance to a variety of biocides, used as antiseptics or disinfectants. The natural monomeric stilbenoid resveratrol (RV) is able to modulate the susceptibility to the chlorhexidine digluconate (CHX) biocide in Acinetobacter baumannii. In this study, a panel of reference strains and clinical isolates of Gram-negative bacteria, Gram-positive bacteria and yeasts were analyzed for susceptibility to CHX and benzalkonium chloride (BZK) and found to be tolerant to one or both biocides. The carbonyl cyanide m-chlorophenylhydrazine protonophore (CCCP) efflux pump inhibitor reduced the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of CHX and BZK in the majority of strains. RV reduced dose-dependently MIC and MBC of CHX and BZK biocides when used as single agents or in combination in all analyzed strains, but not CHX MIC and MBC in Pseudomonas aeruginosa, Candida albicans, Klebsiella pneumoniae, Stenotrophomonas maltophilia and Burkholderia spp. strains. In conclusion, RV reverts tolerance and restores susceptibility to CHX and BZK in the majority of microorganisms responsible for HAI. These results indicates that the combination of RV, CHX and BZK may represent a useful strategy to maintain susceptibility to biocides in several nosocomial pathogens.
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Affiliation(s)
- Antonella Migliaccio
- Department of Public Health, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy; (A.M.); (M.S.); (M.B.); (M.T.)
| | - Maria Stabile
- Department of Public Health, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy; (A.M.); (M.S.); (M.B.); (M.T.)
| | - Maria Bagattini
- Department of Public Health, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy; (A.M.); (M.S.); (M.B.); (M.T.)
| | - Maria Triassi
- Department of Public Health, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy; (A.M.); (M.S.); (M.B.); (M.T.)
| | - Rita Berisio
- Institute of Biostructures and Bioimaging, National Research Council, 80131 Naples, Italy;
| | - Eliana De Gregorio
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy
- Correspondence: (E.D.G.); (R.Z.)
| | - Raffaele Zarrilli
- Department of Public Health, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy; (A.M.); (M.S.); (M.B.); (M.T.)
- Correspondence: (E.D.G.); (R.Z.)
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32
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Evaluation of Biological Activity of Natural Compounds: Current Trends and Methods. Molecules 2022; 27:molecules27144490. [PMID: 35889361 PMCID: PMC9324072 DOI: 10.3390/molecules27144490] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 06/26/2022] [Accepted: 07/04/2022] [Indexed: 02/08/2023] Open
Abstract
Natural compounds have diverse structures and are present in different forms of life. Metabolites such as tannins, anthocyanins, and alkaloids, among others, serve as a defense mechanism in live organisms and are undoubtedly compounds of interest for the food, cosmetic, and pharmaceutical industries. Plants, bacteria, and insects represent sources of biomolecules with diverse activities, which are in many cases poorly studied. To use these molecules for different applications, it is essential to know their structure, concentrations, and biological activity potential. In vitro techniques that evaluate the biological activity of the molecules of interest have been developed since the 1950s. Currently, different methodologies have emerged to overcome some of the limitations of these traditional techniques, mainly via reductions in time and costs. These emerging technologies continue to appear due to the urgent need to expand the analysis capacity of a growing number of reported biomolecules. This review presents an updated summary of the conventional and relevant methods to evaluate the natural compounds’ biological activity in vitro.
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33
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Salazar SB, Pinheiro MJF, Sotti-Novais D, Soares AR, Lopes MM, Ferreira T, Rodrigues V, Fernandes F, Mira NP. Disclosing azole resistance mechanisms in resistant Candida glabrata strains encoding wild-type or gain-of-function CgPDR1 alleles through comparative genomics and transcriptomics. G3 (BETHESDA, MD.) 2022; 12:jkac110. [PMID: 35532173 PMCID: PMC9258547 DOI: 10.1093/g3journal/jkac110] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 04/25/2022] [Indexed: 12/03/2022]
Abstract
The pathogenic yeast Candida glabrata is intrinsically resilient to azoles and rapidly acquires resistance to these antifungals, in vitro and in vivo. In most cases azole-resistant C. glabrata clinical strains encode hyperactive CgPdr1 variants, however, resistant strains encoding wild-type CgPDR1 alleles have also been isolated, although remaining to be disclosed the underlying resistance mechanism. In this study, we scrutinized the mechanisms underlying resistance to azoles of 8 resistant clinical C. glabrata strains, identified along the course of epidemiological surveys undertaken in Portugal. Seven of the strains were found to encode CgPdr1 gain-of-function variants (I392M, E555K, G558C, and I803T) with the substitutions I392M and I803T being herein characterized as hyper-activating mutations for the first time. While cells expressing the wild-type CgPDR1 allele required the mediator subunit Gal11A to enhance tolerance to fluconazole, this was dispensable for cells expressing the I803T variant indicating that the CgPdr1 interactome is shaped by different gain-of-function substitutions. Genomic and transcriptomic profiling of the sole azole-resistant C. glabrata isolate encoding a wild-type CgPDR1 allele (ISTB218) revealed that under fluconazole stress this strain over-expresses various genes described to provide protection against this antifungal, while also showing reduced expression of genes described to increase sensitivity to these drugs. The overall role in driving the azole-resistance phenotype of the ISTB218 C. glabrata isolate played by these changes in the transcriptome and genome of the ISTB218 isolate are discussed shedding light into mechanisms of resistance that go beyond the CgPdr1-signalling pathway and that may alone, or in combination, pave the way for the acquisition of resistance to azoles in vivo.
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Affiliation(s)
- Sara B Salazar
- iBB, Institute for Bioengineering and Biosciences, Instituto Superior Técnico—Department of Bioengineering, Universidade de Lisboa, Lisboa 1049-001, Portugal
- Associate Laboratory i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Lisboa 1049-001, Portugal
| | - Maria Joana F Pinheiro
- iBB, Institute for Bioengineering and Biosciences, Instituto Superior Técnico—Department of Bioengineering, Universidade de Lisboa, Lisboa 1049-001, Portugal
- Associate Laboratory i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Lisboa 1049-001, Portugal
| | - Danielle Sotti-Novais
- iBB, Institute for Bioengineering and Biosciences, Instituto Superior Técnico—Department of Bioengineering, Universidade de Lisboa, Lisboa 1049-001, Portugal
- Associate Laboratory i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Lisboa 1049-001, Portugal
| | - Ana R Soares
- Department of Medical Sciences, Institute of Biomedicine (iBiMED), University of Aveiro, Aveiro 3810, Portugal
| | - Maria M Lopes
- Departamento de Microbiologia e Imunologia, Faculdade de Farmácia da Universidade de Lisboa, Lisboa 1649-003, Portugal
| | - Teresa Ferreira
- Laboratório de Microbiologia, Hospital Dona Estefânia (Centro Hospitalar Universitário Lisboa Central), Lisboa 1169-045, Portugal
| | - Vitória Rodrigues
- Seção de Microbiologia, Laboratório SYNLAB—Lisboa, Grupo SYNLAB Portugal, Lisboa 1070-061, Portugal
| | - Fábio Fernandes
- iBB, Institute for Bioengineering and Biosciences, Instituto Superior Técnico—Department of Bioengineering, Universidade de Lisboa, Lisboa 1049-001, Portugal
- Associate Laboratory i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Lisboa 1049-001, Portugal
| | - Nuno P Mira
- iBB, Institute for Bioengineering and Biosciences, Instituto Superior Técnico—Department of Bioengineering, Universidade de Lisboa, Lisboa 1049-001, Portugal
- Associate Laboratory i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Lisboa 1049-001, Portugal
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Brinkmann S, Kurz M, Patras MA, Hartwig C, Marner M, Leis B, Billion A, Kleiner Y, Bauer A, Toti L, Pöverlein C, Hammann PE, Vilcinskas A, Glaeser J, Spohn M, Schäberle TF. Genomic and Chemical Decryption of the Bacteroidetes Phylum for Its Potential to Biosynthesize Natural Products. Microbiol Spectr 2022; 10:e0247921. [PMID: 35442080 PMCID: PMC9248904 DOI: 10.1128/spectrum.02479-21] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 03/29/2022] [Indexed: 12/04/2022] Open
Abstract
With progress in genome sequencing and data sharing, 1,000s of bacterial genomes are publicly available. Genome mining-using bioinformatics tools in terms of biosynthetic gene cluster (BGC) identification, analysis, and rating-has become a key technology to explore the capabilities for natural product (NP) biosynthesis. Comprehensively, analyzing the genetic potential of the phylum Bacteroidetes revealed Chitinophaga as the most talented genus in terms of BGC abundance and diversity. Guided by the computational predictions, we conducted a metabolomics and bioactivity driven NP discovery program on 25 Chitinophaga strains. High numbers of strain-specific metabolite buckets confirmed the upfront predicted biosynthetic potential and revealed a tremendous uncharted chemical space. Mining this data set, we isolated the new iron chelating nonribosomally synthesized cyclic tetradeca- and pentadecalipodepsipeptide antibiotics chitinopeptins with activity against Candida, produced by C. eiseniae DSM 22224 and C. flava KCTC 62435, respectively. IMPORTANCE The development of pipelines for anti-infectives to be applied in plant, animal, and human health management are dried up. However, the resistance development against compounds in use calls for new lead structures. To fill this gap and to enhance the probability of success for the discovery of new bioactive natural products, microbial taxa currently underinvestigated must be mined. This study investigates the potential within the bacterial phylum Bacteroidetes. A combination of omics-technologies revealed taxonomical hot spots for specialized metabolites. Genome- and metabolome-based analyses showed that the phylum covers a new chemical space compared with classic natural product producers. Members of the Bacteroidetes may thus present a promising bioresource for future screening and isolation campaigns.
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Affiliation(s)
- Stephan Brinkmann
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, Giessen, Germany
| | - Michael Kurz
- Sanofi-Aventis Deutschland GmbH, Frankfurt am Main, Germany
| | - Maria A. Patras
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, Giessen, Germany
| | - Christoph Hartwig
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, Giessen, Germany
| | - Michael Marner
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, Giessen, Germany
| | - Benedikt Leis
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, Giessen, Germany
| | - André Billion
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, Giessen, Germany
| | - Yolanda Kleiner
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, Giessen, Germany
| | - Armin Bauer
- Sanofi-Aventis Deutschland GmbH, Frankfurt am Main, Germany
| | - Luigi Toti
- Sanofi-Aventis Deutschland GmbH, Frankfurt am Main, Germany
| | | | | | - Andreas Vilcinskas
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, Giessen, Germany
- Institute for Insect Biotechnology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Jens Glaeser
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, Giessen, Germany
- Evotec International GmbH, Göttingen, Germany
| | - Marius Spohn
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, Giessen, Germany
| | - Till F. Schäberle
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, Giessen, Germany
- Institute for Insect Biotechnology, Justus-Liebig-University Giessen, Giessen, Germany
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35
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Halimehjani AZ, Dehghan F, Tafakori V, Amini E, Hooshmand SE, Nosood YL. Synthesis of novel antibacterial and antifungal dithiocarbamate-containing piperazine derivatives via re-engineering multicomponent approach. Heliyon 2022; 8:e09564. [PMID: 35669544 PMCID: PMC9163505 DOI: 10.1016/j.heliyon.2022.e09564] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/27/2022] [Accepted: 05/25/2022] [Indexed: 11/21/2022] Open
Abstract
A metal-free multicomponent synthetic route for the diverse preparation of dithiocarbamate-containing piperazine derivatives was developed through the C-N bond cleavage of DABCO ring. This multicomponent re-engineering approach proceeds via the reaction of amines, CS2 and DABCO salts in one pot. Various DABCO salts and secondary amines are tolerated well in this protocol to afford a broad spectrum of dithiocarbamate-containing piperazines in good to high yields. Then, the selected compounds have been deployed against some critical types of bacteria and fungi. A certain number of synthesized compounds revealed not only appropriate antibacterial activity as investigated by disc fusion and minimum inhibitory concentration methods against bacteria (Gram-positive and Gram-negative), but also depicted good to excellent antifungal activity.
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Affiliation(s)
| | - Faezeh Dehghan
- Faculty of Chemistry, Kharazmi University, 49 Mofateh St., 15719-14911, Tehran, Iran
| | - Vida Tafakori
- Department of Cell and Molecular Biology, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
| | - Elaheh Amini
- Department of Animal Biology, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
| | - Seyyed Emad Hooshmand
- Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
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Zgadzay Y, Kolosova O, Stetsenko A, Wu C, Bruchlen D, Usachev K, Validov S, Jenner L, Rogachev A, Yusupova G, Sachs MS, Guskov A, Yusupov M. E-site drug specificity of the human pathogen Candida albicans ribosome. SCIENCE ADVANCES 2022; 8:eabn1062. [PMID: 35613268 PMCID: PMC9132455 DOI: 10.1126/sciadv.abn1062] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 04/07/2022] [Indexed: 05/20/2023]
Abstract
Candida albicans is a widespread commensal fungus with substantial pathogenic potential and steadily increasing resistance to current antifungal drugs. It is known to be resistant to cycloheximide (CHX) that binds to the E-transfer RNA binding site of the ribosome. Because of lack of structural information, it is neither possible to understand the nature of the resistance nor to develop novel inhibitors. To overcome this issue, we determined the structure of the vacant C. albicans 80S ribosome at 2.3 angstroms and its complexes with bound inhibitors at resolutions better than 2.9 angstroms using cryo-electron microscopy. Our structures reveal how a change in a conserved amino acid in ribosomal protein eL42 explains CHX resistance in C. albicans and forms a basis for further antifungal drug development.
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Affiliation(s)
- Yury Zgadzay
- Department of Integrated Structural Biology, Institute of Genetics and Molecular and Cellular Biology, University of Strasbourg, Illkirch, France
- Laboratory of Structural Biology, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
| | - Olga Kolosova
- Department of Integrated Structural Biology, Institute of Genetics and Molecular and Cellular Biology, University of Strasbourg, Illkirch, France
| | - Artem Stetsenko
- Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Groningen, Netherlands
| | - Cheng Wu
- Department of Biology, Texas A&M University, College Station, TX, USA
| | - David Bruchlen
- Department of Integrated Structural Biology, Institute of Genetics and Molecular and Cellular Biology, University of Strasbourg, Illkirch, France
| | - Konstantin Usachev
- Laboratory of Structural Biology, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
- Federal Research Center “Kazan Scientific Center of Russian Academy of Sciences”, Kazan, Russia
| | - Shamil Validov
- Laboratory of Structural Biology, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
- Federal Research Center “Kazan Scientific Center of Russian Academy of Sciences”, Kazan, Russia
| | - Lasse Jenner
- Department of Integrated Structural Biology, Institute of Genetics and Molecular and Cellular Biology, University of Strasbourg, Illkirch, France
| | - Andrey Rogachev
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia
- The Joint Institute for Nuclear Research, Dubna, Russia
| | - Gulnara Yusupova
- Department of Integrated Structural Biology, Institute of Genetics and Molecular and Cellular Biology, University of Strasbourg, Illkirch, France
| | - Matthew S. Sachs
- Department of Biology, Texas A&M University, College Station, TX, USA
| | - Albert Guskov
- Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Groningen, Netherlands
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia
- Corresponding author. (A.G.); (M.Y.)
| | - Marat Yusupov
- Department of Integrated Structural Biology, Institute of Genetics and Molecular and Cellular Biology, University of Strasbourg, Illkirch, France
- Laboratory of Structural Biology, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
- Federal Research Center “Kazan Scientific Center of Russian Academy of Sciences”, Kazan, Russia
- Corresponding author. (A.G.); (M.Y.)
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37
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Ombelet S, Natale A, Ronat JB, Vandenberg O, Jacobs J, Hardy L. Considerations in evaluating equipment-free blood culture bottles: A short protocol for use in low-resource settings. PLoS One 2022; 17:e0267491. [PMID: 35468169 PMCID: PMC9037908 DOI: 10.1371/journal.pone.0267491] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 04/07/2022] [Indexed: 12/21/2022] Open
Abstract
Use of equipment-free, “manual” blood cultures is still widespread in low-resource settings, as requirements for implementation of automated systems are often not met. Quality of manual blood culture bottles currently on the market, however, is usually unknown. An acceptable quality in terms of yield and speed of growth can be ensured by evaluating the bottles using simulated blood cultures. In these experiments, bottles from different systems are inoculated in parallel with blood and a known quantity of bacteria. Based on literature review and personal experiences, we propose a short and practical protocol for an efficient evaluation of manual blood culture bottles, aimed at research or reference laboratories in low-resource settings. Recommendations include: (1) practical equivalence of horse blood and human blood; (2) a diverse selection of 10 to 20 micro-organisms to be tested (both slow- and fast-growing reference organisms); (3) evaluation of both adult and pediatric bottle formulations and blood volumes; (4) a minimum sample size of 120 bottles per bottle type; (5) a formal assessment of usability. Different testing scenarios for increasing levels of reliability are provided, along with practical tools such as worksheets and surveys that can be used by laboratories wishing to evaluate manual blood culture bottles.
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Affiliation(s)
- Sien Ombelet
- Department of Clinical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
- Immunology & Microbiology Department, KU Leuven, Leuven, Belgium
| | | | - Jean-Baptiste Ronat
- Médecins Sans Frontières, Paris, France
- Team ReSIST, INSERM U1184, School of Medicine University Paris-Saclay, Paris, France
- Bacteriology-Hygiene Unit, Assistance Publique – Hôpitaux de Paris, Bicêtre Hospital, Le Kremlin-Bicêtre, France
| | - Olivier Vandenberg
- Center for Environmental Health and Occupational Health, School of Public Health, Université Libre de Bruxelles (ULB), Brussels, Belgium
- Innovation and Business Development Unit, Laboratoire Hospitalier Universitaire de Bruxelles - Universitair Laboratorium Brussel (LHUB-ULB), ULB, Brussels, Belgium
- Division of Infection and Immunity, Faculty of Medical Sciences, University College London, London, United Kingdom
| | - Jan Jacobs
- Department of Clinical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
- Immunology & Microbiology Department, KU Leuven, Leuven, Belgium
| | - Liselotte Hardy
- Department of Clinical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
- * E-mail:
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Mariotti M, Lombardini G, Rizzo S, Scarafile D, Modesto M, Truzzi E, Benvenuti S, Elmi A, Bertocchi M, Fiorentini L, Gambi L, Scozzoli M, Mattarelli P. Potential Applications of Essential Oils for Environmental Sanitization and Antimicrobial Treatment of Intensive Livestock Infections. Microorganisms 2022; 10:microorganisms10040822. [PMID: 35456873 PMCID: PMC9029798 DOI: 10.3390/microorganisms10040822] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 04/12/2022] [Accepted: 04/13/2022] [Indexed: 11/17/2022] Open
Abstract
The extensive use of antibiotics has contributed to the current antibiotic resistance crisis. Livestock infections of Salmonella spp, Clostridium spp. and E. coli antimicrobial-resistant bacteria represent a public threat to human and animal health. To reduce the incidence of these zoonoses, essential oils (EOs) could be effective antibiotic alternatives. This study aims at identifying EOs safe for use, effective both in complementary therapy and in the environmental sanitization of intensive farming. Natural products were chemo-characterized by gas chromatography. Three S. Typhimurium, three C. perfringens and four E. coli strains isolated from poultry and swine farms were used to assess the antimicrobial properties of nine EOs and a modified GR-OLI (mGR-OLI). The toxicity of the most effective ones (Cinnamomum zeylanicum, Cz; Origanum vulgare, Ov) was also evaluated on porcine spermatozoa and Galleria mellonella larvae. Cz, Ov and mGR-OLI showed the strongest antimicrobial activity; their volatile components were also able to significantly inhibit the growth of tested strains. In vitro, Ov toxicity was slightly lower than Cz, while it showed no toxicity on G. mellonella larvae. In conclusion, the study confirms the importance of evaluating natural products to consolidate the idea of safe EO applications in reducing and preventing intensive livestock infections.
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Affiliation(s)
- Melinda Mariotti
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, Largo A. Gemelli 8, 00168 Rome, Italy; (G.L.); (S.R.)
- Correspondence: ; Tel.: +39-063-015-4218; Fax: +39-063-051-152
| | - Giulia Lombardini
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, Largo A. Gemelli 8, 00168 Rome, Italy; (G.L.); (S.R.)
| | - Silvia Rizzo
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, Largo A. Gemelli 8, 00168 Rome, Italy; (G.L.); (S.R.)
| | - Donatella Scarafile
- Dipartimento di Scienze e Tecnologie Agro-Alimentari, Università di Bologna, Viale G. Fanin 42, 40127 Bologna, Italy; (D.S.); (M.M.); (P.M.)
| | - Monica Modesto
- Dipartimento di Scienze e Tecnologie Agro-Alimentari, Università di Bologna, Viale G. Fanin 42, 40127 Bologna, Italy; (D.S.); (M.M.); (P.M.)
| | - Eleonora Truzzi
- Dipartimento di Scienze della Vita, Università di Modena e Reggio Emilia, Via G. Campi 103, 41125 Modena, Italy; (E.T.); (S.B.)
| | - Stefania Benvenuti
- Dipartimento di Scienze della Vita, Università di Modena e Reggio Emilia, Via G. Campi 103, 41125 Modena, Italy; (E.T.); (S.B.)
| | - Alberto Elmi
- Dipartimento di Scienze Mediche Veterinarie, Università di Bologna, Via Tolara di Sopra 50, Ozzano dell’Emilia, 40064 Bologna, Italy; (A.E.); (M.B.)
| | - Martina Bertocchi
- Dipartimento di Scienze Mediche Veterinarie, Università di Bologna, Via Tolara di Sopra 50, Ozzano dell’Emilia, 40064 Bologna, Italy; (A.E.); (M.B.)
| | - Laura Fiorentini
- Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna (IZSLER)—Sede Territoriale di Forlì, Via Don Eugenio Servadei 3E/3F, 47122 Forlì, Italy; (L.F.); (L.G.)
| | - Lorenzo Gambi
- Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna (IZSLER)—Sede Territoriale di Forlì, Via Don Eugenio Servadei 3E/3F, 47122 Forlì, Italy; (L.F.); (L.G.)
| | - Maurizio Scozzoli
- Società Italiana per la Ricerca sugli Oli Essenziali (SIROE), Viale Regina Elena 299, 00161 Rome, Italy;
| | - Paola Mattarelli
- Dipartimento di Scienze e Tecnologie Agro-Alimentari, Università di Bologna, Viale G. Fanin 42, 40127 Bologna, Italy; (D.S.); (M.M.); (P.M.)
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Mignone G, Shwaiki LN, Arendt EK, Coffey A. Isolation of the mustard Napin protein Allergen Sin a 1 and characterisation of its antifungal activity. Biochem Biophys Rep 2022; 29:101208. [PMID: 35079640 PMCID: PMC8777239 DOI: 10.1016/j.bbrep.2022.101208] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 01/07/2022] [Accepted: 01/10/2022] [Indexed: 11/24/2022] Open
Abstract
Proteins and peptides belonging to the plant immune system can possess natural antibacterial, antifungal and antiviral properties. Due to their broad range of activity and stability, they represent promising novel alternatives to commonly used antifungal agents to fight the emergence of resistant strains. An isolation protocol was optimised to target proteins found in plants’ defence system, and it was applied to white mustard (Brassica hirta) seeds. Firstly, a ∼14 kDa protein with activity against S. cerevisiae was extracted and purified; secondly, the protein was identified as the mustard Napin protein named Allergen Sin a 1. Napin is the name given to seed storage (2S) albumin proteins belonging to the Brassicaceae family. While several Napins have been described for their antimicrobial potential, Sin a 1 has been mainly studied for its allergenic properties. The antimicrobial activity of Sin a 1 is described and characterised for the first time in this study; it possesses antifungal and antiyeast in vitro activity, but no antibacterial activity was recorded. The yeasts Zygosaccharomyces bailii Sa 1403 and Saccharomyces cerevisiae DSM 70449 along with the filamentous fungi Fusarium culmorum FST 4.05 were amongst the most senstitive strains to Sin a 1 (MICs range 3–6 μM). The antimicrobial mechanism of membrane permeabilisation was detected, and in general, the antifungal activity of Sin a 1 seemed to be expressed in a dose-dependent manner. Data collected confirmed Sin a 1 to be a stable and compact protein, as it displayed resistance to α-chymotrypsin digestion, heat denaturation and insensitivity to pH variations and the presence of salts. In addition, the protein did not show cytotoxicity towards mammalian cells. Simple purification of an antiyeast protein from white mustard seeds. Identification of the protein as the mustard Napin also classified as Allergen Sin a 1. Description of Sin a 1 antimicrobial spectrum and mode of actions against yeasts.
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Synthesis, molecular modeling, quantum mechanical calculations and ADME estimation studies of benzimidazole-oxadiazole derivatives as potent antifungal agents. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132095] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Ramos Carvalho Â, Candice Genz Bazana L, Meneghello Fuentefria A, Flôres Ferrão M. Digital images coupled to PLS regression for pH prediction in sterile culture medium. Biomed Signal Process Control 2022. [DOI: 10.1016/j.bspc.2021.103435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Comparison of Antimycotic Activity of Originator and Generics of Voriconazole and Anidulafungin against Clinical Isolates of Candida albicans and Candida glabrata. J Fungi (Basel) 2022; 8:jof8020195. [PMID: 35205949 PMCID: PMC8879245 DOI: 10.3390/jof8020195] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/15/2022] [Accepted: 02/16/2022] [Indexed: 02/05/2023] Open
Abstract
Background: Concerns have been expressed about the interchangeability of innovator and generic antifungals in their activity and chemical stability. Materials/methods: The activity of two different antimycotics was tested, each with one originator and two generics. For voriconazole, the originator VFEND® (Pfizer) and the generics (Ratiopharm and Stada) were used for susceptibility testing (21 clinical isolates of Candida albicans (C. albicans); ATCC-90028 C. albicans) in RPMI growth media in compliance with the EUCAST criteria. Likewise, for anidulafungin, the originator ECALTA® (Pfizer) and the generics (Stada and Pharmore) were used for testing (20 clinical isolates of Candida glabrata (C. glabrata); ATCC-22019 Candida parapsilosis (C. parapsilosis)). Time Kill Curves (TKC) with concentrations above and below the respective MIC were performed for one strain for each antifungal. Stability testing of the antimycotics stored at 4 °C and at room temperature over 24 h was done, and samples were subsequently analyzed with HPLC. Results: MIC results showed no significant difference in activity of generic and innovator antimycotic in all settings, which was also confirmed by TKC. Stability testing revealed no differences between originator and generic drugs. Conclusions: The present study demonstrates the interchangeability of generic and originator antimycotic in-vitro, potentially leading to broader public acceptance for generic antimycotics.
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Harpf V, Kenno S, Rambach G, Fleischer V, Parth N, Weichenberger CX, Garred P, Huber S, Lass-Flörl C, Speth C, Würzner R. Influence of Glucose on Candida albicans and the Relevance of the Complement FH-Binding Molecule Hgt1 in a Murine Model of Candidiasis. Antibiotics (Basel) 2022; 11:antibiotics11020257. [PMID: 35203859 PMCID: PMC8868559 DOI: 10.3390/antibiotics11020257] [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: 01/24/2022] [Revised: 02/11/2022] [Accepted: 02/14/2022] [Indexed: 02/01/2023] Open
Abstract
Candidiasis is common in diabetic patients. Complement evasion is facilitated by binding complement factor H (FH). Since the expression of high-affinity glucose transporter 1 (Hgt1), a FH-binding molecule, is glucose-dependent, we aimed to study its relevance to the pathogenesis of Candida albicans. Euglycemic and diabetic mice were intravenously challenged with either Candida albicans lacking Hgt1 (hgt1-/-) or its parental strain (SN152). Survival and clinical status were monitored over 14 days. In vitro, Candida albicans strains were grown at different glucose concentrations, opsonized with human serum, and checked for C3b/iC3b and FH deposition. Phagocytosis was studied by fluorescein isothiocyanate-labeled opsonized yeast cells incubated with granulocytes. The murine model demonstrated a significantly higher virulence of SN152 in diabetic mice and an overall increased lethality of mice challenged with hgt1-/-. In vitro lower phagocytosis and C3b/iC3b deposition and higher FH deposition were demonstrated for SN152 incubated at higher glucose concentrations, while there was no difference on hgt1-/- at physiological glucose concentrations. Despite C3b/iC3b and FH deposition being glucose-dependent, this effect has a minor influence on phagocytosis. The absence of Hgt1 is diminishing this dependency on complement deposition, but it cannot be attributed to being beneficial in a murine model.
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Affiliation(s)
- Verena Harpf
- Institute of Hygiene and Medical Microbiology, Medical University of Innsbruck, 6020 Innsbruck, Austria; (V.H.); (S.K.); (G.R.); (V.F.); (N.P.); (S.H.); (C.L.-F.); (C.S.)
| | - Samyr Kenno
- Institute of Hygiene and Medical Microbiology, Medical University of Innsbruck, 6020 Innsbruck, Austria; (V.H.); (S.K.); (G.R.); (V.F.); (N.P.); (S.H.); (C.L.-F.); (C.S.)
| | - Günter Rambach
- Institute of Hygiene and Medical Microbiology, Medical University of Innsbruck, 6020 Innsbruck, Austria; (V.H.); (S.K.); (G.R.); (V.F.); (N.P.); (S.H.); (C.L.-F.); (C.S.)
| | - Verena Fleischer
- Institute of Hygiene and Medical Microbiology, Medical University of Innsbruck, 6020 Innsbruck, Austria; (V.H.); (S.K.); (G.R.); (V.F.); (N.P.); (S.H.); (C.L.-F.); (C.S.)
| | - Nadia Parth
- Institute of Hygiene and Medical Microbiology, Medical University of Innsbruck, 6020 Innsbruck, Austria; (V.H.); (S.K.); (G.R.); (V.F.); (N.P.); (S.H.); (C.L.-F.); (C.S.)
| | - Christian X. Weichenberger
- Institute for Biomedicine (Affiliated to the University of Lübeck), Eurac Research, 39100 Bolzano, Italy;
| | - Peter Garred
- Laboratory of Molecular Medicine, Department of Clinical Immunology Section 7631, Rigshospitalet, Copenhagen University Hospital, 2200 Copenhagen N, Denmark;
| | - Silke Huber
- Institute of Hygiene and Medical Microbiology, Medical University of Innsbruck, 6020 Innsbruck, Austria; (V.H.); (S.K.); (G.R.); (V.F.); (N.P.); (S.H.); (C.L.-F.); (C.S.)
| | - Cornelia Lass-Flörl
- Institute of Hygiene and Medical Microbiology, Medical University of Innsbruck, 6020 Innsbruck, Austria; (V.H.); (S.K.); (G.R.); (V.F.); (N.P.); (S.H.); (C.L.-F.); (C.S.)
| | - Cornelia Speth
- Institute of Hygiene and Medical Microbiology, Medical University of Innsbruck, 6020 Innsbruck, Austria; (V.H.); (S.K.); (G.R.); (V.F.); (N.P.); (S.H.); (C.L.-F.); (C.S.)
| | - Reinhard Würzner
- Institute of Hygiene and Medical Microbiology, Medical University of Innsbruck, 6020 Innsbruck, Austria; (V.H.); (S.K.); (G.R.); (V.F.); (N.P.); (S.H.); (C.L.-F.); (C.S.)
- Correspondence: ; Tel.: +43-512-90030-70707
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Zhang J, Gong H, Liao M, Li Z, Schweins R, Penny J, Lu JR. How do terminal modifications of short designed IIKK peptide amphiphiles affect their antifungal activity and biocompatibility? J Colloid Interface Sci 2022; 608:193-206. [PMID: 34626966 DOI: 10.1016/j.jcis.2021.09.170] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 07/31/2021] [Accepted: 09/26/2021] [Indexed: 12/15/2022]
Abstract
HYPOTHESIS The widespread and prolonged use of antifungal antibiotics has led to the rapid emergence of multidrug resistant Candida species that compromise current treatments. Natural and synthetic antimicrobial peptides (AMPs) offer potential alternatives but require further development to overcome some of their current drawbacks. AMPs kill pathogenic fungi by permeabilising their membranes but it remains unclear how AMPs can be designed to maximise their antifungal potency whilst minimising their toxicity to host cells. EXPERIMENTS We have designed a group of short (IIKK)3 AMPs via selective terminal modifications ending up with different amphiphilicities. Their antifungal performance was assessed by minimum inhibition concentration (MICs) and dynamic killing to 4 Candida strains and Cryptococcus neoformans, and the minimum biofilm-eradicating concentrations to kill 95% of the C. albicans biofilms (BEC95). Different antifungal actions were interpreted on the basis of structural disruptions of the AMPs to small unilamellar vesicles from fluorescence leakage, Zeta potential, small angle neutron scattering (SANS) and molecular dynamics simulations (MD). FINDING AMPs possess high antifungal activities against the Candida species and Cryptococcus neoformans; some of them displayed faster dynamic killing than antibiotics like amphotericin B. G(IIKK)3I-NH2 and (IIKK)3II-NH2 were particularly potent against not only planktonic microbes but also fungal biofilms with low cytotoxicity to host cells. It was found that their high selectivity and fast action were well correlated to their fast membrane lysis, evident from data measured from Zeta potential measurements, SANS and MD, and also consistent with the previously observed antibacterial and anticancer performance. These studies demonstrate the important role of colloid and interface science in further developing short, potent and biocompatible AMPs towards clinical treatments via structure design and optimization.
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Affiliation(s)
- Jing Zhang
- Biological Physics Laboratory, School of Physics and Astronomy, Faculty of Science and Engineering, Oxford Road, The University of Manchester, Manchester M13 9PL, UK
| | - Haoning Gong
- Biological Physics Laboratory, School of Physics and Astronomy, Faculty of Science and Engineering, Oxford Road, The University of Manchester, Manchester M13 9PL, UK
| | - Mingrui Liao
- Biological Physics Laboratory, School of Physics and Astronomy, Faculty of Science and Engineering, Oxford Road, The University of Manchester, Manchester M13 9PL, UK
| | - Zongyi Li
- Biological Physics Laboratory, School of Physics and Astronomy, Faculty of Science and Engineering, Oxford Road, The University of Manchester, Manchester M13 9PL, UK
| | - Ralf Schweins
- Institut Laue-Langevin, DS/LSS, 71 Avenue des Martyrs, CS-20156, 38042 Grenoble, France
| | - Jeffrey Penny
- Division of Pharmacy and Optometry, Faculty of Biology, Medicine and Health, Oxford Road, The University of Manchester, Manchester M13 9PL, UK
| | - Jian R Lu
- Biological Physics Laboratory, School of Physics and Astronomy, Faculty of Science and Engineering, Oxford Road, The University of Manchester, Manchester M13 9PL, UK.
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Prigitano A, Perrone PM, Esposto MC, Carnevali D, De Nard F, Grimoldi L, Principi N, Cogliati M, Castaldi S, Romanò L. ICU ENVIRONMENTAL SURFACES ARE A RESERVOIR OF FUNGI: SPECIES DISTRIBUTION IN NORTHERN ITALY. J Hosp Infect 2022; 123:74-79. [PMID: 35181398 DOI: 10.1016/j.jhin.2022.02.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 02/08/2022] [Accepted: 02/08/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND Preventing and reducing nosocomial infections is a public health goal. Concern about healthcare-associated fungal infections has increased in recent years, due to the emergence and spread of new pathogens, increasing antifungal resistance and outbreaks in hospital settings. AIM This study investigated the presence of medically-relevant fungal species on environmental surfaces in 12 intensive care units of 8 hospitals in Milan, Italy. METHODS Environmental samplings, using contact plates on surfaces near bed stations and medical workstations, were conducted between November 2019 and January 2020. Fungi isolated were identified and some were tested in vitro for antifungal susceptibility. FINDINGS A total of 401 environmental samples were collected from 61 bed stations and 17 medical workstations. Positive samples were found in all hospitals except one, with positivity rates ranging from 4% to 24.2%. Filamentous fungi were found mainly on infusion pumps (23.2%) and patient tables (21.2%), whereas yeasts were mainly on computers (25%) and floors (10.9%). Fungi were isolated from 12% of total samples. Filamentous fungi, mainly Aspergillus fumigatus, grew in 70.8% of positive samples, and yeasts in 27.1%, mainly Candida parapsilosis (42.8%) and C. glabrata (28.6%). Fungi were detected both near patients' beds and on surfaces at workstations, indicating potential for environment-to-patient, patient-to-patient and healthcare workers-to-patient transmission CONCLUSIONS: This study highlights that surveillance in hospital settings through environmental sampling may be an important component of fungal infection prevention.
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Affiliation(s)
- Anna Prigitano
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy
| | - Pier Mario Perrone
- Post Graduate School of Public Health, Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy
| | - Maria Carmela Esposto
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy
| | - Davide Carnevali
- Post Graduate School of Public Health, Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy
| | - Francesca De Nard
- Post Graduate School of Public Health, Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy; ATS, Agenzia di Tutela della Salute della Città Metropolitana di Milano, Milan, Italy
| | - Ludovico Grimoldi
- Post Graduate School of Public Health, Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy
| | - Niccolò Principi
- Post Graduate School of Public Health, Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy
| | - Massimo Cogliati
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy
| | - Silvana Castaldi
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy; Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico di Milano, Milan, Italy
| | - Luisa Romanò
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy.
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Ombelet S, Natale A, Ronat JB, Kesteman T, Vandenberg O, Jacobs J, Hardy L. Biphasic versus monophasic manual blood culture bottles for low-resource settings: an in-vitro study. THE LANCET MICROBE 2022; 3:e124-e132. [DOI: 10.1016/s2666-5247(21)00241-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 08/19/2021] [Accepted: 08/25/2021] [Indexed: 11/29/2022] Open
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Maheronnaghsh M, Teimoori A, Dehghan P, Fatahinia M. The evaluation of the overexpression of the ERG-11, MDR-1, CDR-1, and CDR-2 genes in fluconazole-resistant Candida albicans isolated from Ahvazian cancer patients with oral candidiasis. J Clin Lab Anal 2022; 36:e24208. [PMID: 34997991 DOI: 10.1002/jcla.24208] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 11/19/2021] [Accepted: 12/12/2021] [Indexed: 11/06/2022] Open
Abstract
INTRODUCTION Resistance to azole drugs has been observed in candidiasis due to their long-term use and poor response to treatment. Resistance to azole drugs in Candida albicans isolates is controlled by several genes including ERG11, CDR1, CDR2, and MDR1. In this study, the expression of the mentioned genes was evaluated in C. albicans isolates susceptible and resistant to fluconazole. METHODS After identifying the Candida isolates using morphological and molecular methods, the minimum inhibitory concentration (MIC) and drug susceptibility were determined using the European Committee on Antimicrobial Susceptibility Testing (EUCAST) method. RNA was then extracted and cDNA was synthesized from 24 C. albicans isolates from patients with cancer. Then, the mean expressions of these genes were compared in two groups using real-time polymerase chain reaction (RT-PCR). RESULTS A total of 74 Candida isolates were obtained from the oral cavity of 61 cancer patients with oral candidiasis. After 24 h, 21.6% of the isolates were fluconazole-resistant, 10.8% were identified as dose-dependent, and the rest of the isolates (67.6%) were fluconazole-sensitive. The mean expressions of the CDR1 and MDR1 genes were significantly higher in the resistant isolates than in the sensitive ones. However, the ERG11 and CDR2 genes were not significantly increased in the resistant isolates. CONCLUSION The increased mean expressions of the CDR1 and MDR1 genes had a greater effect on fluconazole resistance among the drug-resistant strains of C. albicans in chemotherapy patients. It seemed that the accumulation of chemotherapeutic drugs in this organism stimulated some regulatory factors and increased the expression of these two genes and ultimately helped to further increase their expression and resistance to fluconazole.
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Affiliation(s)
- Mehrnoush Maheronnaghsh
- Department of Medical Mycology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Department of Parasitology and Mycology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Ali Teimoori
- Department of Virology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Parvin Dehghan
- Department of Parasitology and Mycology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mahnaz Fatahinia
- Department of Medical Mycology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Infectious and Tropical Diseases Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Evren AE, Yurttaş L, Gencer HK. Synthesis of New Thiazole Derivatives Bearing Thiazolidin-4(5H)-One Structure and Evaluation of Their Antimicrobial Activity. BRAZ J PHARM SCI 2022. [DOI: 10.1590/s2175-97902022e19248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Asaf Evrim Evren
- Anadolu University, Turkey; Bilecik Şeyh Edebali University, Turkey
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Meneses ML, Recalde M, Martin PL, Pardo AG. Antifungal activity of silver nanoparticles and clotrimazole against Candida spp. BRAZ J PHARM SCI 2022. [DOI: 10.1590/s2175-97902022e18719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- María Laura Meneses
- Universidad Nacional de Quilmes, Argentina; Universidad Nacional Arturo Jauretche, Argentina; Universidad Nacional de La Plata, Argentina
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Chemical Profile of Ruta graveolens, Evaluation of the Antioxidant and Antibacterial Potential of Its Essential Oil, and Molecular Docking Simulations. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app112411753] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The research aimed to investigate the chemical composition and antioxidant and antibacterial potential of the essential oil (EO) isolated from the aerial parts (flowers, leaves, and stems) of Ruta graveolens L., growing in western Romania. Ruta graveolens L. essential oil (RGEO) was isolated by steam distillation (0.29% v/w), and the content was assessed by gas chromatography-mass spectrometry (GC-MS). Findings revealed that 2-Undecanone (76.19%) and 2-Nonanone (7.83%) followed by 2-Undecanol (1.85%) and 2-Tridecanone (1.42%) are the main detected compounds of the oil. The RGEO exerted broad-spectrum antibacterial and antifungal effects, S. pyogenes, S. aureus, and S. mutans being the most susceptible tested strains. The antioxidant activity of RGEO was assessed by peroxide and thiobarbituric acid value, 1,1-diphenyl-2-picrylhydrazyl radical (DPPH), and β-carotene/linoleic acid bleaching testing. The results indicated moderate radical scavenging and relative antioxidative activity in DPPH and β-carotene bleaching tests. However, between the 8th and 16th days of the incubation period, the inhibition of primary oxidation compounds induced by the RGEO was significantly stronger (p < 0.001) than butylated hydroxyanisole (BHA). Molecular docking analysis highlighted that a potential antimicrobial mechanism of the RGEO could be exerted through the inhibition of D-Alanine-d-alanine ligase (DDl) by several RGEO components. Docking analysis also revealed that a high number RGEO components could exert a potential in vitro protein-targeted antioxidant effect through xanthine oxidase and lipoxygenase inhibition. Consequently, RGEO could be a new natural source of antiseptics and antioxidants, representing an option for the use of synthetic additives in the food and pharmaceutical industry.
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