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Saada A, Monpierre L, Djènontin E, Andriantsoanirina V, Ratsimbason M, Randriamialinoro F, Ranarivelo L, Botterel F, Durand R. In vitro efficacy of essential oils against various Candida species. Nat Prod Res 2024:1-6. [PMID: 38770986 DOI: 10.1080/14786419.2024.2355586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 05/09/2024] [Indexed: 05/22/2024]
Abstract
Candida species are responsible for the most common fungal infections worldwide. We studied the in vitro antifungal activity of a large panel of essential oils (EOs) against various Candida species. The EOs activity against Candida spp. was tested using a gradient microdilution assay ranging from 4% to 0.008% (v/v). After a preliminary screening including 31 EOs, seven selected EOs were tested against 13 clinical isolates and four reference strains belonging to six Candida species. Cinnamomum zeylanicum and Cymbopogon giganteus EOs exhibited the best antifungal activity against all clinical and reference strains, with MIC ranges of 0.015%-0.25% (v/v). EOs from Litsea citrata, Backhousia citriodora and Ocimum sanctum presented MIC ranges of 0.03%-0.5% (v/v). The antifungal efficacy of EOs was independent of the susceptibility of Candida strains to usual antifungal agents. These EOs could have a promising antifungal action.
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Affiliation(s)
- Alix Saada
- Dynamyc 7380, Faculté de Santé, Université Paris-Est Créteil (UPEC), EnvA ANSES, Créteil, France
| | - Lorra Monpierre
- Dynamyc 7380, Faculté de Santé, Université Paris-Est Créteil (UPEC), EnvA ANSES, Créteil, France
- Unité de Parasitologie-Mycologie, Département Prévention, Diagnostic, Traitement des Infections, CHU Henri Mondor, Assistance Publique des Hôpitaux de Paris (AP-HP), Créteil, France
| | - Elie Djènontin
- Dynamyc 7380, Faculté de Santé, Université Paris-Est Créteil (UPEC), EnvA ANSES, Créteil, France
- Unité de Parasitologie-Mycologie, Département Prévention, Diagnostic, Traitement des Infections, CHU Henri Mondor, Assistance Publique des Hôpitaux de Paris (AP-HP), Créteil, France
| | | | - Michel Ratsimbason
- Centre National d'Application de Recherches Pharmaceutiques, Tananarive, Madagascar
| | | | | | - Françoise Botterel
- Dynamyc 7380, Faculté de Santé, Université Paris-Est Créteil (UPEC), EnvA ANSES, Créteil, France
- Unité de Parasitologie-Mycologie, Département Prévention, Diagnostic, Traitement des Infections, CHU Henri Mondor, Assistance Publique des Hôpitaux de Paris (AP-HP), Créteil, France
| | - Rémy Durand
- Unité de Parasitologie-Mycologie, Département Prévention, Diagnostic, Traitement des Infections, CHU Henri Mondor, Assistance Publique des Hôpitaux de Paris (AP-HP), Créteil, France
- Université Paris Saclay, CNRS, BioCis, Orsay, France
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Williams L, Hatton FL, Righetti MC, Mele E. Investigating How the Properties of Electrospun Poly(lactic acid) Fibres Loaded with the Essential Oil Limonene Evolve over Time under Different Storage Conditions. Polymers (Basel) 2024; 16:1005. [PMID: 38611263 PMCID: PMC11013927 DOI: 10.3390/polym16071005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 03/19/2024] [Accepted: 03/29/2024] [Indexed: 04/14/2024] Open
Abstract
Essential oils have been identified as effective natural compounds to prevent bacterial infections and thus are widely proposed as bioactive agents for biomedical applications. Across the literature, various essential oils have been incorporated into electrospun fibres to produce materials with, among others, antibacterial, anti-inflammatory and antioxidant activity. However, limited research has been conducted so far on the effect of these chemical products on the physical characteristics of the resulting composite fibres for extended periods of time. Within this work, electrospun fibres of poly(lactic acid) (PLA) were loaded with the essential oil limonene, and the impact of storage conditions and duration (up to 12 weeks) on the thermal degradation, glass transition temperature and mechanical response of the fibrous mats were investigated. It was found that the concentration of the encapsulated limonene changed over time and thus the properties of the PLA-limonene fibres evolved, particularly in the first two weeks of storage (independently from storage conditions). The amount of limonene retained within the fibres, even 4 weeks after fibre generation, was effective to successfully inhibit the growth of model microorganisms Escherichia coli, Staphylococcus aureus and Bacillus subtilis. The results of this work demonstrate the importance of evaluating physical properties during the ageing of electrospun fibres encapsulating essential oils, in order to predict performance modification when the composite fibres are used as constituents of medical devices.
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Affiliation(s)
- Leah Williams
- Department of Materials, Loughborough University, Loughborough LE11 3TU, UK;
| | - Fiona L. Hatton
- Department of Materials, Loughborough University, Loughborough LE11 3TU, UK;
| | - Maria Cristina Righetti
- National Research Council-Institute for Chemical and Physical Processes (CNR-IPCF), Via Moruzzi 1, 56124 Pisa, Italy;
| | - Elisa Mele
- Department of Materials, Loughborough University, Loughborough LE11 3TU, UK;
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Dzhoglova V, Ivanov K, Benbassat N, Georgieva-Dimova Y, Ardasheva R, Karcheva-Bahchevanska D, Ivanova S. Crithmum maritimum L.-Study on the Histochemical Localization of Essential Oil. PLANTS (BASEL, SWITZERLAND) 2024; 13:550. [PMID: 38498561 PMCID: PMC10892170 DOI: 10.3390/plants13040550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 02/13/2024] [Accepted: 02/14/2024] [Indexed: 03/20/2024]
Abstract
Crithmum maritimum L. is a perennial halophyte plant that is a medicinal herb known by people from different cultures since ancient times. However, the therapeutic potential of this halophyte has not been completely investigated, and the scientific data on it are limited. The purpose of the present study was to estimate the chemical composition of the essential oil (EO) obtained from the aerial parts of Crithmum maritimum L. growing wild in Bulgaria, as well as the histolocalization of secretory structures for the synthesis and accumulation of volatile oils. The results obtained on the EO composition of Bulgarian Crithmum maritimum L. provide an opportunity to reveal potential future applications in various fields, such as medicine, pharmacy, agriculture, food, and the cosmetic industry. Gas chromatography with mass spectrometry was performed to assess the chemical profile of the isolated EO. The phenylpropanoid dillapiole was identified as the major compound in the EO, accounting for 34.09% of the total EO. Monoterpene hydrocarbons represented 62.07% of the total oil composition. γ-Terpinene, D-limonene, and β-pinene were the most abundant monoterpene hydrocarbons in the composition of the EO. In addition, histochemical localization of EO in the stem and leaves of Crithmum maritimum L. was carried out. The secretory structures were located in the cortical region of the stem and in the mesophyll tissues of the leaves in the form of secretory ducts. The performed histochemical analysis confirmed the lipophilic nature of the secretion from the duct cells. This is the first report related to the histolocalization and chemical composition of the EO from Bulgarian Crithmum maritimum L. Furthermore, our data indicate some potential possibilities for the evaluation of the therapeutic activity of the EO obtained from this plant species and outline its future applications as a therapeutic agent. Also, the EO from the studied halophyte plant has prominent potential to be used as a biopesticide, which is an environmentally friendly option compared to standard pesticides.
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Affiliation(s)
- Velina Dzhoglova
- Department of Pharmacognosy and Pharmaceutical Chemistry, Faculty of Pharmacy, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria
| | - Kalin Ivanov
- Department of Pharmacognosy and Pharmaceutical Chemistry, Faculty of Pharmacy, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria
| | - Niko Benbassat
- Department of Pharmacognosy and Pharmaceutical Chemistry, Faculty of Pharmacy, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria
| | - Yoana Georgieva-Dimova
- Department of Pharmacognosy and Pharmaceutical Chemistry, Faculty of Pharmacy, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria
| | - Rayna Ardasheva
- Department of Medical Physics and Biophysics, Faculty of Pharmacy, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria
| | - Diana Karcheva-Bahchevanska
- Department of Pharmacognosy and Pharmaceutical Chemistry, Faculty of Pharmacy, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria
| | - Stanislava Ivanova
- Department of Pharmacognosy and Pharmaceutical Chemistry, Faculty of Pharmacy, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria
- Research Institute, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria
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Ahmedi S, Khan I, Ghanem S, Manzoor N. Limonene synergistically augments fluconazole susceptibility in clinical Candida isolates from cleft lip and palate patients. Natl J Maxillofac Surg 2024; 15:47-54. [PMID: 38690249 PMCID: PMC11057589 DOI: 10.4103/njms.njms_34_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 07/17/2023] [Accepted: 07/18/2023] [Indexed: 05/02/2024] Open
Abstract
Background Cleft lip and palate (CLP) patients are prone to Candida infections (oral thrush) mainly due to poor oral hygiene, repetitive surgeries, and orthodontic procedures. Aim This study was undertaken to evaluate the antifungal efficacy of limonene against clinical Candida isolates from CLP patients. Materials and Methods The antifungal efficacy of limonene was studied alone and in combination with fluconazole (FLC) against six standards, twenty nine FLC sensitive, and three FLC resistant clinical strains using broth dilution, checkerboard microdilution, agar disk diffusion, growth curves, and spot assays. Results This nontoxic monoterpene gave low minimum inhibitory concentration (MIC) values of 300-375 µg/mL and 500-520 µg/mL for FLC susceptible and FLC resistant strains, respectively. It showed synergistic interaction with FLC in all clinical and standard Candida strains (fractional inhibitory concentration (FIC) index ≤0.5). Conclusion Significant chemosensitization of FLC was observed even against resistant clinical isolates. Complete suppression of fungal growth was observed when using combinations. Negligible toxicity, easy availability, and potent antifungal properties suggest that limonene and FLC combinations in appropriate doses can make excellent antifungal mouthwashes during CLP treatment pre and post surgery. Impending in vivo studies are needed to validate the present data.
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Affiliation(s)
- Saiema Ahmedi
- Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Imran Khan
- Department of Biosciences, Jamia Millia Islamia, New Delhi, India
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Jamia Millia Islamia, New Delhi, India
| | - Samah Ghanem
- Botany and Microbiology Department, Faculty of Science, Helwan University, Helwan, Cairo, Egypt
| | - Nikhat Manzoor
- Department of Biosciences, Jamia Millia Islamia, New Delhi, India
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Niculescu AG, Georgescu M, Marinas IC, Ustundag CB, Bertesteanu G, Pinteală M, Maier SS, Al-Matarneh CM, Angheloiu M, Chifiriuc MC. Therapeutic Management of Malignant Wounds: An Update. Curr Treat Options Oncol 2024; 25:97-126. [PMID: 38224423 DOI: 10.1007/s11864-023-01172-2] [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] [Accepted: 12/20/2023] [Indexed: 01/16/2024]
Abstract
OPINION STATEMENT Malignant fungating wounds (MFW) are severe skin conditions generating tremendous distress in oncological patients with advanced cancer stages because of pain, malodor, exudation, pruritus, inflammation, edema, and bleeding. The classical therapeutic approaches such as surgery, opioids, antimicrobials, and application of different wound dressings are failing in handling pain, odor, and infection control, thus urgently requiring the development of alternative strategies. The aim of this review was to provide an update on the current therapeutic strategies and the perspectives on developing novel alternatives for better malignant wound management. The last decade screened literature evidenced an increasing interest in developing natural treatment alternatives based on beehive, plant extracts, pure vegetal compounds, and bacteriocins. Promising therapeutics can also be envisaged by involving nanotechnology due to either intrinsic biological activities or drug delivery properties of nanomaterials. Despite recent progress in the field of malignant wound care, the literature is still mainly based on in vitro and in vivo studies on small animal models, while the case reports and clinical trials (less than 10 and only one providing public results) remain scarce. Some innovative treatment approaches are used in clinical practice without prior extensive testing in fungating wound patients. Extensive research is urgently needed to fill this knowledge gap and translate the identified promising therapeutic approaches to more advanced testing stages toward creating multidimensional wound care strategies.
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Affiliation(s)
- Adelina-Gabriela Niculescu
- Department of Microbiology and Immunology, Faculty of Biology, Research Institute of the University of Bucharest, University of Bucharest, Bucharest, Romania
- Department of Science and Engineering of Oxide Materials and Nanomaterials, National University of Science and Technology Politehnica Bucharest, 011061, Bucharest, Romania
| | - Mihaela Georgescu
- Department of Microbiology and Immunology, Faculty of Biology, Research Institute of the University of Bucharest, University of Bucharest, Bucharest, Romania
- Department of Dermatology, Dr. Carol Davila Central Military, Emergency University Hospital, Bucharest, Romania
| | - Ioana Cristina Marinas
- Department of Microbiology and Immunology, Faculty of Biology, Research Institute of the University of Bucharest, University of Bucharest, Bucharest, Romania.
| | - Cem Bulent Ustundag
- Department of Bioengineering, Faculty of Chemical and Metallurgical Engineering, Yildiz Technical University, Istanbul, Turkey
| | - Gloria Bertesteanu
- ENT Department, University of Medicine and Pharmacy Carol Davila and Coltea Clinical Hospital, 020022, Bucharest, Romania
| | - Mariana Pinteală
- Centre of Advanced Research in Bionanoconjugates and Biopolymers, "Petru Poni" Institute of Macromolecular Chemistry, Iasi, Romania
| | - Stelian Sergiu Maier
- Centre of Advanced Research in Bionanoconjugates and Biopolymers, "Petru Poni" Institute of Macromolecular Chemistry, Iasi, Romania
- Department of Chemical Engineering, Faculty of Industrial Design and Business Management, Gheorghe Asachi" Technical University of Iasi, Iasi, Romania
| | - Cristina Maria Al-Matarneh
- Department of Microbiology and Immunology, Faculty of Biology, Research Institute of the University of Bucharest, University of Bucharest, Bucharest, Romania
- Centre of Advanced Research in Bionanoconjugates and Biopolymers, "Petru Poni" Institute of Macromolecular Chemistry, Iasi, Romania
| | - Marian Angheloiu
- Research and Development Department of SC Sanimed International Impex SRL, 6 Bucharest-Giurgiu Street, Giurgiu, Romania
| | - Mariana Carmen Chifiriuc
- Department of Microbiology and Immunology, Faculty of Biology, Research Institute of the University of Bucharest, University of Bucharest, Bucharest, Romania
- Department of Botany and Microbiology, Faculty of Biology, University of Bucharest, 1-3 Portocalelor Street, Bucharest, Romania
- The Romanian Academy, 25, Calea Victoriei, District 1, Bucharest, Romania
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Tadić V, Božović M, Sapienza F, Astolfi R, Mladenović M, Zaka MC, Del Bove F, Borzacchi F, Fraschetti C, Rossi C, Vertuani S, Baldisserotto A, Manfredini S, Ragno R. Chemical Composition and Anti- Candida Activity of Mentha suaveolens Ehrh. Essential Oils Obtained by Different Distillation Processes. Molecules 2023; 28:6934. [PMID: 37836777 PMCID: PMC10574099 DOI: 10.3390/molecules28196934] [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: 08/23/2023] [Revised: 09/24/2023] [Accepted: 09/29/2023] [Indexed: 10/15/2023] Open
Abstract
A comparative study on essential oils extracted from Mentha suaveolens Ehrh. from Italy is reported. Two extraction procedures were investigated: hydrodistillation and steam distillation, carried out as a continuous and fractionated procedure. Fresh and dried plant material from two harvests was used. The hydrodistillation method yielded a higher amount of essential oil. The dried plant was significantly richer in essential oil per kg of starting plant material. Gas chromatography-mass spectrometry analysis of 112 samples showed that the essential oils belong to the piperitenone oxide-rich chemotype. In addition, piperitenone, p-cymen-8-ol, and limonene were among the most abundant compounds in the different samples. A higher amount of piperitenone oxide was obtained by hydrodistillation, while steam distillation gave a higher percentage of piperitenone and limonene. The essential oils were characterized for their anti-Candida albicans activity; higher potency was observed for the samples rich in piperitenone oxide, with MIC values ranging from 0.39 to 0.78 mg·mL-1 (0.039% and 0.078% p/v). The results of this work provide a deep insight into the methodology of essential oil extraction and the associated chemical variability of M. suaveolens Ehrh. Some of the essential oils are potent against C. albicans and could be considered for potential use in therapy.
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Affiliation(s)
- Vanja Tadić
- Institute of Medicinal Plants Research Dr. Josif Pančić, Tadeuša Koščuška 1, 11000 Belgrade, Serbia;
| | - Mijat Božović
- Faculty of Natural Science and Mathematics, University of Montenegro, Džordža Vašingtona bb, 81000 Podgorica, Montenegro;
| | - Filippo Sapienza
- Rome Center for Molecular Design, Department of Drug Chemistry and Technology, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (F.S.); (R.A.)
| | - Roberta Astolfi
- Rome Center for Molecular Design, Department of Drug Chemistry and Technology, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (F.S.); (R.A.)
| | - Milan Mladenović
- Kragujevac Center for Computational Biochemistry, Department of Chemistry, Faculty of Science, University of Kragujevac, Radoja Domanovića 12, 34000 Kragujevac, Serbia;
| | - Maria Cristina Zaka
- Department of Drug Chemistry and Technology, Bachelor Course in Applied Pharmaceutical Sciences, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (M.C.Z.); (F.D.B.)
| | - Fabiana Del Bove
- Department of Drug Chemistry and Technology, Bachelor Course in Applied Pharmaceutical Sciences, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (M.C.Z.); (F.D.B.)
| | | | - Caterina Fraschetti
- Department of Drug Chemistry and Technology, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy;
| | - Caterina Rossi
- Department of Life Sciences and Biotechnology, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy; (C.R.); (S.V.); (A.B.)
| | - Silvia Vertuani
- Department of Life Sciences and Biotechnology, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy; (C.R.); (S.V.); (A.B.)
| | - Anna Baldisserotto
- Department of Life Sciences and Biotechnology, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy; (C.R.); (S.V.); (A.B.)
| | - Stefano Manfredini
- Department of Life Sciences and Biotechnology, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy; (C.R.); (S.V.); (A.B.)
| | - Rino Ragno
- Rome Center for Molecular Design, Department of Drug Chemistry and Technology, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (F.S.); (R.A.)
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Duangjit S, Takayama K, Bumrungthai S, Mahadlek J, Ngawhirunpat T, Opanasopit P. Development of invaethosomes and invaflexosomes for dermal delivery of clotrimazole: optimization, characterization and antifungal activity. Pharm Dev Technol 2023; 28:611-624. [PMID: 37357890 DOI: 10.1080/10837450.2023.2229104] [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: 04/17/2023] [Revised: 06/08/2023] [Accepted: 06/20/2023] [Indexed: 06/27/2023]
Abstract
The objective of this study was to develop novel invaethosomes (I-ETS) and invaflexosomes (I-FXS) to enhance the dermal delivery of clotrimazole (CZ). Twenty model CZ-loaded I-ETS and I-FXS formulations were created according to a face-centered central composite experimental design. CZ-loaded vesicle formulations containing a constant concentration of 0.025% w/v CZ and various amounts of ethanol, d-limonene, and polysorbate 20 as penetration enhancers were prepared using the thin film hydration method. The physicochemical characteristics, skin permeability, and antifungal activity were characterized. The skin permeability of the experimental CZ-loaded I-ETS/I-FXS was significantly higher than that of conventional ethosomes, flexosomes, and the commercial product (1% w/w CZ cream). The mechanism of action was confirmed to be skin penetration of low ethanol base vesicles through the disruption of the skin microstructure. The optimal I-ETS in vitro antifungal activity against C. albicans differed significantly from that of ETS and the commercial cream (control). The response surface methodology predicted by Design Expert® was helpful in understanding the complicated relationship between the causal factors and the response variables of the 0.025% w/v CZ-loaded I-ETS/I-FXS formulation. Based on the available information, double vesicles seem to be promising versatile carriers for dermal drug delivery of CZ.
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Affiliation(s)
- Sureewan Duangjit
- Faculty of Pharmaceutical Sciences, Ubon Ratchathani University, Ubon Ratchathani, Thailand
| | - Kozo Takayama
- Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, Saitama, Japan
| | - Sureewan Bumrungthai
- Faculty of Pharmaceutical Sciences, Ubon Ratchathani University, Ubon Ratchathani, Thailand
| | - Jongjan Mahadlek
- Faculty of Pharmacy, Silpakorn University, Nakhon Pathom, Thailand
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8
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Zhou X, Zeng M, Huang F, Qin G, Song Z, Liu F. The potential role of plant secondary metabolites on antifungal and immunomodulatory effect. Appl Microbiol Biotechnol 2023:10.1007/s00253-023-12601-5. [PMID: 37272939 DOI: 10.1007/s00253-023-12601-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/13/2023] [Accepted: 05/17/2023] [Indexed: 06/06/2023]
Abstract
With the widespread use of antibiotic drugs worldwide and the global increase in the number of immunodeficient patients, fungal infections have become a serious threat to global public health security. Moreover, the evolution of fungal resistance to existing antifungal drugs is on the rise. To address these issues, the development of new antifungal drugs or fungal inhibitors needs to be targeted urgently. Plant secondary metabolites are characterized by a wide variety of chemical structures, low price, high availability, high antimicrobial activity, and few side effects. Therefore, plant secondary metabolites may be important resources for the identification and development of novel antifungal drugs. However, there are few studies to summarize those contents. In this review, the antifungal modes of action of plant secondary metabolites toward different types of fungi and fungal infections are covered, as well as highlighting immunomodulatory effects on the human body. This review of the literature should lay the foundation for research into new antifungal drugs and the discovery of new targets. KEY POINTS: • Immunocompromised patients who are infected the drug-resistant fungi are increasing. • Plant secondary metabolites toward various fungal targets are covered. • Plant secondary metabolites with immunomodulatory effect are verified in vivo.
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Affiliation(s)
- Xue Zhou
- School of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, People's Republic of China
| | - Meng Zeng
- School of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, People's Republic of China
| | - Fujiao Huang
- School of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, People's Republic of China
| | - Gang Qin
- Department of Otolaryngology Head and Neck Surgery, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China
| | - Zhangyong Song
- School of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, People's Republic of China.
- Molecular Biotechnology Platform, Public Center of Experimental Technology, Southwest Medical University, Luzhou, 646000, People's Republic of China.
| | - Fangyan Liu
- School of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, People's Republic of China.
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9
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Fernandes L, Costa R, Silva S, Henriques M, Costa-de-Oliveira S, Rodrigues ME. Effect of Vapor-Phase Oregano Essential Oil on Resistant Candida Species Biofilms: Mechanisms of Action. Microbiol Spectr 2023; 11:e0512422. [PMID: 36971589 PMCID: PMC10100680 DOI: 10.1128/spectrum.05124-22] [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: 12/14/2022] [Accepted: 03/06/2023] [Indexed: 03/29/2023] Open
Abstract
Vulvovaginal candidiasis (VVC) is one of the most prevalent vaginal infectious diseases. The increasing incidence of drug-resistant Candida strains and the limited therapeutic options make the discovery of effective alternative therapies fundamental. Essential oils (EOs) have been suggested as a promising alternative, and interestingly, vapor-phase essential oils (VP-EOs) present more advantages than their direct application. Thus, this study aims to evaluate the effect of oregano VP-EO (VP-OEO) on biofilms of antifungal-resistant vaginal isolates of Candida species (Candida albicans and Candida glabrata) and determine its mode of action. CFU, membrane integrity, and metabolic activity were evaluated. Furthermore, a reconstituted vaginal epithelium was used to mimic vaginal conditions and evaluate the effect of VP-OEO on Candida species infection, analyzed by DNA quantification, microscopy, and lactate dehydrogenase activity. The results revealed high VP-OEO antifungal activity. There was a significant reduction (>4 log CFU) in Candida species biofilms. Furthermore, the results show that the mechanisms of action of VP-OEO are related to membrane integrity and metabolic activity. The epithelium model confirms the effectiveness of VP-OEO. This study suggests that VP-EO can be considered a first approach for the development of an alternative form of VVC treatment. IMPORTANCE This work presents a new approach to the application of essential oils, exposure to the vapor phase, which can be considered a first approach for the development of a complementary or alternative form of vulvovaginal candidiasis (VVC) treatment. VVC is a significant infection caused by Candida species and remains a common disease that affects millions of women every year. The great difficulty in treating VVC and the extremely limited effective therapeutic options make the development of alternative treatments crucial. In this scope, this study aims to contribute to the development of effective, inexpensive, and nontoxic strategies for the prevention and treatment of this infectious disease, based on natural products. Moreover, this new approach has several advantages for women, such as lower costs, easy access, an easier mode of application, avoidance of skin contact, and, therefore, fewer negative impacts on women's health.
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Affiliation(s)
- Liliana Fernandes
- Centre of Biological Engineering, LMaS—Laboratório de Microbiologia Aplicada à Saúde, University of Minho, Campus de Gualtar, Braga, Portugal
- LABBELS—Associate Laboratory, Braga/Guimarães, Portugal
| | - Raquel Costa
- Aromas Aqua Spa—Clínica Saúde, Vila Verde, Braga, Portugal
| | - Sónia Silva
- Centre of Biological Engineering, LMaS—Laboratório de Microbiologia Aplicada à Saúde, University of Minho, Campus de Gualtar, Braga, Portugal
- LABBELS—Associate Laboratory, Braga/Guimarães, Portugal
- National Institute for Agrarian and Veterinary Research, Vairão, Vila do Conde, Portugal
| | - Mariana Henriques
- Centre of Biological Engineering, LMaS—Laboratório de Microbiologia Aplicada à Saúde, University of Minho, Campus de Gualtar, Braga, Portugal
- LABBELS—Associate Laboratory, Braga/Guimarães, Portugal
| | - Sofia Costa-de-Oliveira
- Division of Microbiology, Department of Pathology, Faculty of Medicine, University of Porto, Porto, Portugal
- Center for Health Technology and Services Research—CINTESIS@RISE, Faculty of Medicine, University of Porto, Porto, Portugal
| | - Maria E. Rodrigues
- Centre of Biological Engineering, LMaS—Laboratório de Microbiologia Aplicada à Saúde, University of Minho, Campus de Gualtar, Braga, Portugal
- LABBELS—Associate Laboratory, Braga/Guimarães, Portugal
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Alzahrani AY. Design, synthesis, and antimicrobial evaluation of novel pyridine and chromene derivatives with their characterization, containing Lidocaine analog. JOURNAL OF SAUDI CHEMICAL SOCIETY 2023. [DOI: 10.1016/j.jscs.2023.101620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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11
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Alves-Silva JM, Gonçalves MJ, Silva A, Cavaleiro C, Cruz MT, Salgueiro L. Chemical Profile, Anti-Microbial and Anti-Inflammaging Activities of Santolina rosmarinifolia L. Essential Oil from Portugal. Antibiotics (Basel) 2023; 12:antibiotics12010179. [PMID: 36671380 PMCID: PMC9854695 DOI: 10.3390/antibiotics12010179] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/08/2023] [Accepted: 01/11/2023] [Indexed: 01/19/2023] Open
Abstract
Fungal infections and the accompanying inflammatory responses are associated with great morbidity and mortality due to the frequent relapses triggered by an increased resistance to antifungal agents. Furthermore, this inflammatory state can be exacerbated during inflammaging and cellular senescence. Essential oils (EO) are receiving increasing interest in the field of drug discovery due to their lipophilic nature and complex composition, making them suitable candidates in the development of new antifungal drugs and modulators of numerous molecular targets. This work chemically characterized the EO from Santolina rosmarinifolia L., collected in Setúbal (Portugal), and assessed its antifungal potential by determining its minimum inhibitory (MIC) and minimum lethal (MLC) concentration in accordance with the Clinical Laboratory Standard Guidelines (CLSI) guidelines, as well as its effect on several Candida albicans virulence factors. The anti-inflammatory effect was unveiled using lipopolysaccharide (LPS)-stimulated macrophages by assessing several pro-inflammatory mediators. The wound healing and anti-senescence potential of the EO was also disclosed. The EO was mainly characterized by β-pinene (29.6%), borneol (16.9%), myrcene (15.4%) and limonene (5.7%). It showed a strong antifungal effect against yeasts and filamentous fungi (MIC = 0.07-0.29 mg/mL). Furthermore, it inhibited dimorphic transition (MIC/16), decreased biofilm formation with a preeminent effect after 24 h (MIC/2) and disrupted preformed biofilms in C. albicans. Additionally, the EO decreased nitric oxide (NO) release (IC50 = 0.52 mg/mL) and pro-IL-1β and inducible nitric oxide synthase (iNOS) expression in LPS-stimulated macrophages, promoted wound healing (91% vs. 81% closed wound) and reduced cellular senescence (53% vs. 73% β-galactosidase-positive cells). Overall, this study highlights the relevant pharmacological properties of S. rosmarinifolia, opening new avenues for its industrial exploitation.
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Affiliation(s)
- Jorge M. Alves-Silva
- Institute for Clinical and Biomedical Research, Health Sciences Campus, University of Coimbra, Azinhaga de S. Comba, 3000-548 Coimbra, Portugal
- Faculty of Pharmacy, Health Sciences Campus, University of Coimbra, Azinhaga de S. Comba, 3000-548 Coimbra, Portugal
| | - Maria José Gonçalves
- Faculty of Pharmacy, Health Sciences Campus, University of Coimbra, Azinhaga de S. Comba, 3000-548 Coimbra, Portugal
- Chemical Process Engineering and Forest Products Research Centre, Department of Chemical Engineering, Faculty of Sciences and Technology, University of Coimbra, 3030-790 Coimbra, Portugal
| | - Ana Silva
- Center for Neuroscience and Cell Biology, Faculty of Medicine, University of Coimbra, Rua Larga, 3004-504 Coimbra, Portugal
| | - Carlos Cavaleiro
- Faculty of Pharmacy, Health Sciences Campus, University of Coimbra, Azinhaga de S. Comba, 3000-548 Coimbra, Portugal
- Chemical Process Engineering and Forest Products Research Centre, Department of Chemical Engineering, Faculty of Sciences and Technology, University of Coimbra, 3030-790 Coimbra, Portugal
| | - Maria Teresa Cruz
- Faculty of Pharmacy, Health Sciences Campus, University of Coimbra, Azinhaga de S. Comba, 3000-548 Coimbra, Portugal
- Center for Neuroscience and Cell Biology, Faculty of Medicine, University of Coimbra, Rua Larga, 3004-504 Coimbra, Portugal
| | - Lígia Salgueiro
- Faculty of Pharmacy, Health Sciences Campus, University of Coimbra, Azinhaga de S. Comba, 3000-548 Coimbra, Portugal
- Chemical Process Engineering and Forest Products Research Centre, Department of Chemical Engineering, Faculty of Sciences and Technology, University of Coimbra, 3030-790 Coimbra, Portugal
- Correspondence:
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Leite-Andrade MC, de Araújo Neto LN, Buonafina-Paz MDS, de Assis Graciano dos Santos F, da Silva Alves AI, de Castro MCAB, Mori E, de Lacerda BCGV, Araújo IM, Coutinho HDM, Kowalska G, Kowalski R, Baj T, Neves RP. Antifungal Effect and Inhibition of the Virulence Mechanism of D-Limonene against Candida parapsilosis. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27248884. [PMID: 36558017 PMCID: PMC9788451 DOI: 10.3390/molecules27248884] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/23/2022] [Accepted: 12/09/2022] [Indexed: 12/15/2022]
Abstract
Yeasts from the Candida parapsilosis complex are clinically relevant due to their high virulence and pathogenicity potential, such as adherence to epithelial cells and emission of filamentous structures, as well as their low susceptibility to antifungals. D-limonene, a natural compound, emerges as a promising alternative with previously described antibacterial, antiparasitic, and antifungal activity; however, its mechanisms of action and antivirulence activity against C. parapsilosis complex species have not been elucidated. Therefore, in the present study, we aimed to evaluate the antifungal and antivirulence action, as well as the mechanism of action of D-limonene against isolates from this complex. D-limonene exhibited relevant antifungal activity against C. parapsilosis complex yeasts, as well as excellent antivirulence activity by inhibiting yeast morphogenesis and adherence to the human epithelium. Furthermore, the apoptotic mechanism induced by this compound, which is not induced by oxidative stress, represents an important target for the development of new antifungal drugs.
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Affiliation(s)
| | | | | | | | | | - Maria Carolina Accioly Brelaz de Castro
- Laboratório de Parasitologia e Laboratório de Imunologia IAM, Centro Acadêmico de Vitória, Universidade Federal de Pernambuco (UFPE), Vitória de Santo Antão 55608-680, PE, Brazil
| | - Edna Mori
- Faculdade CECAPE College, São José, Juazeiro do Norte 63024-015, CE, Brazil
| | | | - Isaac Moura Araújo
- Departamento de Química Biológica, Universidade Regional do Cariri, Crato 63105-010, CE, Brazil
| | - Henrique Douglas Melo Coutinho
- Departamento de Química Biológica, Universidade Regional do Cariri, Crato 63105-010, CE, Brazil
- Correspondence: (H.D.M.C.); (T.B.)
| | - Grażyna Kowalska
- Department of Tourism and Recreation, University of Life Sciences in Lublin, 15 Akademicka Str., 20-950 Lublin, Poland
| | - Radosław Kowalski
- Department of Analysis and Food Quality Assessment, University of Life Sciences in Lublin, 8 Skromna Str., 20-704 Lublin, Poland
| | - Tomasz Baj
- Department of Pharmacognosy with Medicinal Plants Garden, Medical University of Lublin, 1 Chodzki Str., 20-093 Lublin, Poland
- Correspondence: (H.D.M.C.); (T.B.)
| | - Rejane Pereira Neves
- Departamento de Micologia, Universidade Federal de Pernambuco (UFPE), Recife 50670-901, PE, Brazil
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Nanoparticles for Antimicrobial Agents Delivery-An Up-to-Date Review. Int J Mol Sci 2022; 23:ijms232213862. [PMID: 36430343 PMCID: PMC9696780 DOI: 10.3390/ijms232213862] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/06/2022] [Accepted: 11/08/2022] [Indexed: 11/12/2022] Open
Abstract
Infectious diseases constitute an increasing threat to public health and medical systems worldwide. Particularly, the emergence of multidrug-resistant pathogens has left the pharmaceutical arsenal unarmed to fight against such severe microbial infections. Thus, the context has called for a paradigm shift in managing bacterial, fungal, viral, and parasitic infections, leading to the collision of medicine with nanotechnology. As a result, renewed research interest has been noted in utilizing various nanoparticles as drug delivery vehicles, aiming to overcome the limitations of current treatment options. In more detail, numerous studies have loaded natural and synthetic antimicrobial agents into different inorganic, lipid, and polymeric-based nanomaterials and tested them against clinically relevant pathogens. In this respect, this paper reviews the most recently reported successfully fabricated nanoformulations that demonstrated a great potential against bacteria, fungi, viruses, and parasites of interest for human medicine.
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Zapata-Zapata C, Loaiza-Oliva M, Martínez-Pabón MC, Stashenko EE, Mesa-Arango AC. In Vitro Activity of Essential Oils Distilled from Colombian Plants against Candidaauris and Other Candida Species with Different Antifungal Susceptibility Profiles. Molecules 2022; 27:molecules27206837. [PMID: 36296428 PMCID: PMC9606955 DOI: 10.3390/molecules27206837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 10/01/2022] [Accepted: 10/04/2022] [Indexed: 11/28/2022] Open
Abstract
Multi-drug resistant species such as Candida auris are a global health threat. This scenario has highlighted the need to search for antifungal alternatives. Essential oils (EOs), or some of their major compounds, could be a source of new antifungal molecules. The aim of this study was to evaluate the in vitro activity of EOs and some terpenes against C. auris and other Candida spp. The eleven EOs evaluated were obtained by hydro-distillation from different Colombian plants and the terpenes were purchased. EO chemical compositions were obtained by gas chromatography/mass spectrometry (GC/MS). Antifungal activity was evaluated following the CLSI standard M27, 4th Edition. Cytotoxicity was tested on the HaCaT cell line and fungal growth kinetics were tested by time–kill assays. Candida spp. showed different susceptibility to antifungals and the activity of EOs and terpenes was strain-dependent. The Lippia origanoides (thymol + p-cymene) chemotype EO, thymol, carvacrol, and limonene were the most active, mainly against drug-resistant strains. The most active EOs and terpenes were also slightly cytotoxic on the HaCaT cells. The findings of this study suggest that some EOs and commercial terpenes can be a source for the development of new anti-Candida products and aid the identification of new antifungal targets or action mechanisms.
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Affiliation(s)
- Carolina Zapata-Zapata
- Grupo de Investigación Dermatológica, Universidad de Antioquia, Medellín 050010, Colombia
| | - Manuela Loaiza-Oliva
- Grupo de Investigación en Patología Oral, Periodoncia y Cirugía Alveólo-Dentaria, Universidad de Antioquia, Medellín 050010, Colombia
| | - María C. Martínez-Pabón
- Grupo de Investigación en Patología Oral, Periodoncia y Cirugía Alveólo-Dentaria, Universidad de Antioquia, Medellín 050010, Colombia
| | - Elena E. Stashenko
- CROM-MASS-CENIVAM-Universidad Industrial de Santander, Bucaramanga 68002, Colombia
| | - Ana C. Mesa-Arango
- Grupo de Investigación Dermatológica, Universidad de Antioquia, Medellín 050010, Colombia
- Correspondence:
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Cheng YJ, Wu YJ, Lee FW, Ou LY, Chen CN, Chu YY, Kuan YC. Impact of Storage Condition on Chemical Composition and Antifungal Activity of Pomelo Extract against Colletotrichum gloeosporioides and Anthracnose in Post-harvest Mango. PLANTS (BASEL, SWITZERLAND) 2022; 11:2064. [PMID: 35956542 PMCID: PMC9370353 DOI: 10.3390/plants11152064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 07/31/2022] [Accepted: 08/05/2022] [Indexed: 06/15/2023]
Abstract
Anthracnose caused by Colletotrichum leads to a tremendous post-harvest mango loss. While chemical fungicides are applied to control anthracnose, natural alternatives are preferred due to food safety and environmental concerns. Pomelo extract (PE) exhibits a broad spectrum of antimicrobial activities; however, its effect against anthracnose is unknown. Here we investigated the chemical profile of PE using GC-MS and the anti-anthracnose activity of PE using in vitro and in vivo assays. We also evaluated the impact of storage temperature (0°, 5°, 10°, 20°, -20°, and -80 °C) and light conditions on the composition and antifungal activity of PE. We found that PE inhibited C. gloeosporioides in vitro with an IC50 of 3.2 mL L-1. Applying chitosan-based coating incorporated with 20 mL L-1 PE significantly suppressed anthracnose in post-harvest 'Keitt' mango. A storage temperature below 5 °C substantially preserved major compounds and the antifungal activity of PE after 6 m of storage. Finally, we showed that applying d-limonene, the key constituent of PE, inhibited C. gloeosporioides in vitro (IC50: 10.9 mM) and suppressed anthracnose in vivo. In conclusion, we demonstrated that the application of PE and d-limonene are sustainable methods for anthracnose control in post-harvest crops and established the preservation protocol for PE.
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Affiliation(s)
- Yu-Jung Cheng
- Department of Horticulture and Landscape Architecture, National Taiwan University, Taipei 10617, Taiwan
| | - Ying-Jou Wu
- Department of Horticulture and Landscape Architecture, National Taiwan University, Taipei 10617, Taiwan
| | - Fang-Wei Lee
- Department of Horticulture and Landscape Architecture, National Taiwan University, Taipei 10617, Taiwan
| | - Ling-Yi Ou
- Department of Horticulture and Landscape Architecture, National Taiwan University, Taipei 10617, Taiwan
| | - Chi-Nan Chen
- Chiayi Agricultural Experiment Branch, Taiwan Agricultural Research Institute, Council of Agriculture, Executive Yuan, Chiayi 60044, Taiwan
| | - Yu-Ying Chu
- Chiayi Agricultural Experiment Branch, Taiwan Agricultural Research Institute, Council of Agriculture, Executive Yuan, Chiayi 60044, Taiwan
| | - Yen-Chou Kuan
- Department of Horticulture and Landscape Architecture, National Taiwan University, Taipei 10617, Taiwan
- Highland Experimental Farm, National Taiwan University, Nantou 54641, Taiwan
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Fernandes L, Ribeiro R, Costa R, Henriques M, Rodrigues ME. Essential Oils as a Good Weapon against Drug-Resistant Candida auris. Antibiotics (Basel) 2022; 11:antibiotics11070977. [PMID: 35884231 PMCID: PMC9311903 DOI: 10.3390/antibiotics11070977] [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: 06/01/2022] [Revised: 07/14/2022] [Accepted: 07/16/2022] [Indexed: 12/10/2022] Open
Abstract
Candida auris is a recently found Candida species, mainly associated with nosocomial outbreaks in intensive care hospital settings, and unlike other Candida species, it can be transmitted through person-to-person or by contact with surfaces. C. auris is described as resistant to first-line antifungals and, consequently, associated with high mortality. Nowadays, essential oils (EOs) are known to be effective against fungal and bacterial infections. This work aimed to evaluate the effect of four EOs (tea tree, niaouli, white thyme and cajeput) against C. auris. The EO’s effect on C. auris planktonic growth was evaluated by the minimum inhibitory concentration determination and by the agar disc diffusion method. Then, the same effect was evaluated on biofilm by colony-forming units’ enumeration. The results showed that EOs were able to inhibit the C. auris planktonic growth, with an MIC50 between 0.78 and 1.56% and halos of 20–21 mm for white thyme and tea tree and 13–14 mm for cajeput and niaouli. In addition, the EOs were also able to completely inhibit biofilm formation. Moreover, white thyme and cajeput completely eradicate pre-formed biofilms, while tea tree and niaouli significantly reduce it. Thus, this work demonstrates that EOs are a possible therapeutic alternative and a future perspective for the hard fight against C. auris.
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Affiliation(s)
- Liliana Fernandes
- Centre of Biological Engineering, LMaS—Laboratório de Microbiologia Aplicada à Saúde, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (L.F.); (R.R.); (M.E.R.)
- LABBELS–Associate Laboratory, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal
| | - Rita Ribeiro
- Centre of Biological Engineering, LMaS—Laboratório de Microbiologia Aplicada à Saúde, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (L.F.); (R.R.); (M.E.R.)
- LABBELS–Associate Laboratory, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal
| | - Raquel Costa
- Aromas Aqua Spa–Clínica Saúde, Praça 5 Outubro nº 32, 4730-731 Braga, Portugal;
| | - Mariana Henriques
- Centre of Biological Engineering, LMaS—Laboratório de Microbiologia Aplicada à Saúde, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (L.F.); (R.R.); (M.E.R.)
- LABBELS–Associate Laboratory, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal
- Correspondence: ; Tel.: +351-253-601-961; Fax: +351-253-604-429
| | - M. Elisa Rodrigues
- Centre of Biological Engineering, LMaS—Laboratório de Microbiologia Aplicada à Saúde, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (L.F.); (R.R.); (M.E.R.)
- LABBELS–Associate Laboratory, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal
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Antifungal and Anti-Biofilm Effects of Caffeic Acid Phenethyl Ester on Different Candida Species. Antibiotics (Basel) 2021; 10:antibiotics10111359. [PMID: 34827297 PMCID: PMC8614700 DOI: 10.3390/antibiotics10111359] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/31/2021] [Accepted: 11/03/2021] [Indexed: 11/16/2022] Open
Abstract
This study investigated the effect of CAPE on planktonic growth, biofilm-forming abilities, mature biofilms, and cell death of C. albicans, C. tropicalis, C. glabrata, and C. parapsilosis strains. Our results showed a strain- and dose-dependent effect of CAPE on Candida, and the MIC values were between 12.5 and 100 µg/mL. Similarly, the MBIC values of CAPE ranging between 50 and 100 µg/mL highlighted the inhibition of the biofilm-forming abilities in a dose-dependent manner, as well. However, CAPE showed a weak to moderate biofilm eradication ability (19-49%) on different Candida strains mature biofilms. Both caspase-dependent and caspase-independent apoptosis after CAPE treatment were observed in certain tested Candida strains. Our study has displayed typical apoptotic hallmarks of CAPE-induced chromatin margination, nuclear blebs, nuclear condensation, plasma membrane detachment, enlarged lysosomes, cytoplasm fragmentation, cell wall distortion, whole-cell shrinkage, and necrosis. In conclusion, CAPE has a concentration and strain-dependent inhibitory activity on viability, biofilm formation ability, and cell death response in the different Candida species.
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Niculescu AG, Grumezescu AM. Natural Compounds for Preventing Ear, Nose, and Throat-Related Oral Infections. PLANTS 2021; 10:plants10091847. [PMID: 34579380 PMCID: PMC8468404 DOI: 10.3390/plants10091847] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 09/01/2021] [Accepted: 09/03/2021] [Indexed: 12/18/2022]
Abstract
Oral health is an essential element in maintaining general well-being. By preserving the complex equilibrium within the oral microbial community, commensal microorganisms can protect against extrinsic pathogenic threats. However, when an imbalance occurs, the organism is susceptible to a broad range of infections. Synthetic drugs can be administered to help the body fight against the fungal, bacterial, or viral burden. Nonetheless, they may produce undesirable consequences such as toxicity, adverse effects, and drug resistance. In this respect, research has focused on finding safer and more efficient alternatives. Particularly, increasing attention has been drawn towards developing novel formulations based on natural compounds. This paper reviews the plant-based, algae-based, and beehive products investigated for their antimicrobial properties, aiming to thoroughly present the state of the art on oral infection prevention in the ear, nose, and throat (ENT) field.
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Affiliation(s)
- Adelina-Gabriela Niculescu
- Faculty of Engineering in Foreign Languages, University Politehnica of Bucharest, 060042 Bucharest, Romania;
- Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 060042 Bucharest, Romania
| | - Alexandru Mihai Grumezescu
- Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 060042 Bucharest, Romania
- Research Institute of the University of Bucharest—ICUB, University of Bucharest, 050657 Bucharest, Romania
- Academy of Romanian Scientists, 3 Ilfov Street, 50044 Bucharest, Romania
- Correspondence: ; Tel.: +40-21-402-3997
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Abstract
Injudicious consumption of antibiotics in the past few decades has arisen the problem of resistance in pathogenic organisms against most antibiotics and antimicrobial agents. Scenarios of treatment failure are becoming more common in hospitals. This situation demands the frequent need for new antimicrobial compounds which may have other mechanisms of action from those which are in current use. Limonene can be utilized as one of the solutions to the problem of antimicrobial resistance. Limonene is a naturally occurring monoterpene with a lemon-like odor, which mainly present in the peels of citrus plants like lemon, orange, grapefruit, etc. The study aimed to enlighten the antimicrobial properties of limonene as per previous literature. Advantageous contributions have been made by various research groups in the study of the antimicrobial properties of limonene. Previous studies have shown that limonene not only inhibits disease-causing pathogenic microbes, however, it also protects various food products from potential contaminants. This review article contains information about the effectiveness of limonene as an antimicrobial agent. Apart from antimicrobial property, some other uses of limonene are also discussed such as its role as fragrance and flavor additive, as in the formation of nonalcoholic beverages, as solvent and cleaner in the petroleum industry, and as a pesticide. Antibacterial, antifungal, antiviral, and anti-biofilm properties of limonene may help it to be used in the future as a potential antimicrobial agent with minimal adverse effects. Some of the recent studies also showed the action of limonene against COVID-19 (Coronavirus). However, additional studies are requisite to scrutinize the possible mechanism of antimicrobial action of limonene.
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Biomaterials for the Prevention of Oral Candidiasis Development. Pharmaceutics 2021; 13:pharmaceutics13060803. [PMID: 34072188 PMCID: PMC8229946 DOI: 10.3390/pharmaceutics13060803] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 05/18/2021] [Accepted: 05/25/2021] [Indexed: 12/19/2022] Open
Abstract
Thousands of microorganisms coexist within the human microbiota. However, certain conditions can predispose the organism to the overgrowth of specific pathogens that further lead to opportunistic infections. One of the most common such imbalances in the normal oral flora is the excessive growth of Candida spp., which produces oral candidiasis. In immunocompromised individuals, this fungal infection can reach the systemic level and become life-threatening. Hence, prompt and efficient treatment must be administered. Traditional antifungal agents, such as polyenes, azoles, and echinocandins, may often result in severe adverse effects, regardless of the administration form. Therefore, novel treatments have to be developed and implemented in clinical practice. In this regard, the present paper focuses on the newest therapeutic options against oral Candida infections, reviewing compounds and biomaterials with inherent antifungal properties, improved materials for dental prostheses and denture adhesives, drug delivery systems, and combined approaches towards developing the optimum treatment.
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Mechanism of Antifungal Activity by 5-Aminoimidazole-4-Carbohydrazonamide Derivatives against Candida albicans and Candida krusei. Antibiotics (Basel) 2021; 10:antibiotics10020183. [PMID: 33673152 PMCID: PMC7917925 DOI: 10.3390/antibiotics10020183] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 02/05/2021] [Accepted: 02/08/2021] [Indexed: 12/30/2022] Open
Abstract
Systemic mycoses are one major cause of morbidity/mortality among immunocompromised/debilitated individuals. Studying the mechanism of action is a strategy to develop safer/potent antifungals, warning resistance emergence. The major goal of this study was to elucidate the mechanism of action of three (Z)-5-amino-N’-aryl-1-methyl-1H-imidazole-4-carbohydrazonamides (2h, 2k, 2l) that had previously demonstrated strong antifungal activity against Candida krusei and C. albicans ATCC strains. Activity was confirmed against clinical isolates, susceptible or resistant to fluconazole by broth microdilution assay. Ergosterol content (HPLC-DAD), mitochondrial dehydrogenase activity (MTT), reactive oxygen species (ROS) generation (flow cytometry), germ tube inhibition and drug interaction were evaluated. None of the compounds inhibited ergosterol synthesis. Ascorbic acid reduced the antifungal effect of compounds and significantly decreased ROS production. The metabolic viability of C. krusei was significantly reduced for values of 2MIC. Compounds 2h and 2k caused a significant increase in ROS production for MIC values while for 2l a significant increase was only observed for concentrations above MIC. ROS production seems to be involved in antifungal activity and the higher activity against C. krusei versus C. albicans may be related to their unequal sensitivity to different ROS. No synergism with fluconazole or amphotericin was observed, but the association of 2h with fluconazole might be valuable due to the significant inhibition of the dimorphic transition, a C. albicans virulence mechanism.
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