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Imam MW, Luqman S. Unveiling the mechanism of essential oil action against skin pathogens: from ancient wisdom to modern science. Arch Microbiol 2024; 206:347. [PMID: 38985339 DOI: 10.1007/s00203-024-03986-6] [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: 03/13/2024] [Revised: 04/22/2024] [Accepted: 04/28/2024] [Indexed: 07/11/2024]
Abstract
Essential oils are among the most well-known phyto-compounds, and since ancient times, they have been utilized in medicine. Over 100 essential oils have been identified and utilized as therapies for various skin infections and related ailments. While numerous commercial medicines are available in different dosage forms to treat skin diseases, the persisting issues include their side effects, toxicity, and low efficacy. As a result, researchers are seeking novel classes of compounds as substitutes for synthetic drugs, aiming for minimal side effects, no toxicity, and high efficacy. Essential oils have shown promising antimicrobial activity against skin-associated pathogens. This review presents essential knowledge and scientific information regarding essential oil's antimicrobial capabilities against microorganisms that cause skin infections. Essential oils mechanisms against different pathogens have also been explored. Many essential oils exhibit promising activity against various microbes, which has been qualitatively assessed using the agar disc diffusion experiment, followed by determining the minimum inhibitory concentration for quantitative evaluation. It has been observed that Staphylococcus aureus and Candida albicans have been extensively researched in the context of skin-related infections and their antimicrobial activity, including established modes of action. In contrast, other skin pathogens such as Staphylococcus epidermidis, Streptococcus pyogens, Propionibacterium acnes, and Malassezia furfur have received less attention or neglected. This review report provides an updated understanding of the mechanisms of action of various essential oils with antimicrobial properties. This review explores the anti-infectious activity and mode of action of essential against distinct skin pathogens. Such knowledge can be valuable in treating skin infections and related ailments.
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Affiliation(s)
- Md Waquar Imam
- Bioprospection and Product Development Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, 226015, Uttar Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201001, Uttar Pradesh, India
| | - Suaib Luqman
- Bioprospection and Product Development Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, 226015, Uttar Pradesh, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201001, Uttar Pradesh, India.
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2
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Venancio AN, Silva MJ, Parreira LA, Júlio AA, Souza GR, Conceição Santos MF, Menini L. Citronellal: a natural aldehyde with important properties. Nat Prod Res 2024:1-14. [PMID: 38567669 DOI: 10.1080/14786419.2024.2332949] [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: 08/29/2023] [Accepted: 03/11/2024] [Indexed: 04/04/2024]
Abstract
Among the several terpenes existing in nature, Citronellal, a monoterpene aldehyde, deserves to be highlighted for its biological properties that have been pointed out in numerous studies. This work aimed to conduct a literature review on its biological properties. Citronellal is a prominent compound in the essential oils of Cymbopogon genus plants. Apart from being employed as a fragrance ingredient in aromas, fragrances, and cosmetics, it is also used as an intermediate in synthesising (-)-menthol. Various studies have demonstrated Citronellal's potential as an antibacterial compound, particularly anti-Staphylococcus and Escherichia bacteria. Citronellal also has antifungal properties against several fungi, especially fungi of the genus Candida. The studies found showed that Citronellal also has insecticidal, acaricidal, antiparasitic, anaesthetic, antiviral, antioxidant, antinociceptive, cardioprotective, antihypertensive, anti-inflammatory, antidiabetic, and anticancer properties.
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Affiliation(s)
- Aldino N Venancio
- Department of Chemistry, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Marcio J Silva
- Department of Chemistry, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Luciana A Parreira
- Departamento de Química e Física, Universidade Federal do Espírito Santo, Alegre, ES, Brazil
| | - Armanda A Júlio
- Department of Agrochemistry, Instituto Federal do Espírito Santo, Alegre, ES, Brazil
| | - Gustavo R Souza
- Departamento de Química e Física, Universidade Federal do Espírito Santo, Alegre, ES, Brazil
| | | | - Luciano Menini
- Department of Agrochemistry, Instituto Federal do Espírito Santo, Alegre, ES, Brazil
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Pattini VC, Polaquini CR, Lemes TH, Brizzotti-Mazuchi NS, Sardi JDCO, Paziani MH, Kress MRVZ, de Almeida MTG, Regasini LO. Antifungal activity of 3,3'-dimethoxycurcumin (DMC) against dermatophytes and Candida species. Lett Appl Microbiol 2024; 77:ovae019. [PMID: 38499446 DOI: 10.1093/lambio/ovae019] [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: 10/01/2023] [Revised: 01/24/2024] [Accepted: 03/13/2024] [Indexed: 03/20/2024]
Abstract
Dermatomycosis is an infection with global impacts caused especially by dermatophytes and Candida species. Current antifungal therapies involve drugs that face fungal resistance barriers. This clinical context emphasizes the need to discover new antifungal agents. Herein, the antifungal potential of 10 curcumin analogs was evaluated against four Candida and four dermatophyte species. The most active compound, 3,3'-dimethoxycurcumin, exhibited minimum inhibitory concentration values ranging from 1.9‒62.5 to 15.6‒62.5 µg ml-1 against dermatophytes and Candida species, respectively. According to the checkerboard method, the association between DMC and terbinafine demonstrated a synergistic effect against Trichophyton mentagrophytes and Epidermophyton floccosum. Ergosterol binding test indicated DMC forms a complex with ergosterol of Candida albicans, C. krusei, and C. tropicalis. However, results from the sorbitol protection assay indicated that DMC had no effect on the cell walls of Candida species. The in vivo toxicity, using Galleria mellonella larvae, indicated no toxic effect of DMC. Altogether, curcumin analog DMC was a promising antifungal agent with a promising ability to act against Candida and dermatophyte species.
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Affiliation(s)
- Veridianna Camilo Pattini
- Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University, São José do Rio Preto, São Paulo 15054-000, Brazil
| | - Carlos Roberto Polaquini
- Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University, São José do Rio Preto, São Paulo 15054-000, Brazil
| | - Thiago Henrique Lemes
- Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University, São José do Rio Preto, São Paulo 15054-000, Brazil
| | | | | | - Mário Henrique Paziani
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo 05508-000, Brazil
| | - Marcia Regina von Zeska Kress
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo 05508-000, Brazil
| | | | - Luis Octávio Regasini
- Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University, São José do Rio Preto, São Paulo 15054-000, Brazil
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Butzge JC, Pivotto C, Mezzomo L, Ferrão SK, Picanço JMA, Mezzari A, Calil LN, Limberger RP, Apel MA. Antifungal Properties of Essential Oils Derived from the Genus Cymbopogon: A Systematic Review. Chem Biodivers 2023; 20:e202300663. [PMID: 37574454 DOI: 10.1002/cbdv.202300663] [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: 05/08/2023] [Revised: 08/06/2023] [Accepted: 08/10/2023] [Indexed: 08/15/2023]
Abstract
Essential oils (EOs) are products of secondary metabolism with recognized organoleptic characteristics and biological properties. Recently, there has been a growing demand for EOs in the national and international market, mainly due to the recognition of their use as complementary medicine practices, and the increased use in the industries of pharmaceutics, cosmetics, well-being, veterinary and agroecology, boosting the productive sector. In this context, EOs from grasses of the Cymbopogon (Poaceae) are promising sources of bioactive compounds, due to their recognized biological properties, such as anti-inflammatory, antibacterial, antifungal, antidiabetic, repellent, and larvicide. Thus, the present study aims to carry out a review of the scientific literature of the main works related to the evaluation of the antifungal action of essential oils extracted from plants of the Cymbopogon genus, compiling the species that showed the best results and relating them to their main chemical constituents. This review covers the following species: C. citratus, C. flexuosus, C. winterianus, C. martinii, C. nardus, C. giganteus, C. schoenanthus, C. khasans, and C. proximus. Among them, C. citratus was the most assessed, being associated with the vast majority of studies (61.9 %), and it was also the species that showed the best results in terms of MIC.
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Affiliation(s)
- Juliana Caroline Butzge
- Graduate Program in Pharmaceutical Sciences, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Christiane Pivotto
- Department of Analysis, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Leticia Mezzomo
- Department of Analysis, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Simone Krause Ferrão
- Graduate Program in Pharmaceutical Sciences, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - João Marcelo Astolfi Picanço
- Graduate Program in Pharmaceutical Sciences, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Adelina Mezzari
- Department of Analysis, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Luciane Noal Calil
- Department of Analysis, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Renata Pereira Limberger
- Graduate Program in Pharmaceutical Sciences, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
- Department of Analysis, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Miriam A Apel
- Graduate Program in Pharmaceutical Sciences, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
- Department of Analysis, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
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Al-Otibi F, Albulayhid LS, Alharbi RI, Almohsen AA, AlShowiman GM. Biological Activity of Biosynthesized Silver Nanoaggregates Prepared from the Aqueous Extract of Cymbopogon citratus against Candida spp. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2198. [PMID: 37570516 PMCID: PMC10421022 DOI: 10.3390/nano13152198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 07/13/2023] [Accepted: 07/20/2023] [Indexed: 08/13/2023]
Abstract
Cymbopogon citratus is commonly used in folk medicine for the treatment of nervous and gastrointestinal disturbances and other medical issues because of its potent antioxidant capacity. The current study evaluated the anti-candida effects of silver nanoparticles (AgNPs) synthesized from an aqueous extract of C. citratus against different Candida spp. The aqueous extract was prepared from the fresh leaves of C. citratus. The silver nanoparticles (AgNPs) were prepared and validated by UV spectroscopy, Fourier-transform infrared spectroscopy (FTIR), transmission electron microscope (TEM), and zeta size analysis. C. albicans, C. krusei, C. parapsilosis, C. tropicalis, C. famata, C. rhodotorula, and C. glabrata were used in the antifungal assay. Microscopical imaging were used to investigate the different morphological changes induced by treatment. FTIR spectrum confirmed the existence of various functional groups of biomolecules capping the nanoparticles. The average particle size of synthesized AgNPs was 100.6 nm by zeta-sizer and 0.012 to 0.059 mm by TEM. In the antifungal assay, AgNPs aggregates induced significant inhibition of the growth of all species (p < 0.05) compared to the control and the biofilm maturation in C. famata and C. albicans. These considerable antifungal activities might lead to the development of appropriate alternative remedy for the treatment of fungal infections.
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Affiliation(s)
- Fatimah Al-Otibi
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11495, Saudi Arabia; (L.S.A.); (R.I.A.); (A.A.A.); (G.M.A.)
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Caracciolo PC, Abraham GA, Battaglia ES, Bongiovanni Abel S. Recent Progress and Trends in the Development of Electrospun and 3D Printed Polymeric-Based Materials to Overcome Antimicrobial Resistance (AMR). Pharmaceutics 2023; 15:1964. [PMID: 37514150 PMCID: PMC10385409 DOI: 10.3390/pharmaceutics15071964] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/11/2023] [Accepted: 07/14/2023] [Indexed: 07/30/2023] Open
Abstract
Antimicrobial resistance (AMR) developed by microorganisms is considered one of the most critical public health issues worldwide. This problem is affecting the lives of millions of people and needs to be addressed promptly. Mainly, antibiotics are the substances that contribute to AMR in various strains of bacteria and other microorganisms, leading to infectious diseases that cannot be effectively treated. To avoid the use of antibiotics and similar drugs, several approaches have gained attention in the fields of materials science and engineering as well as pharmaceutics over the past five years. Our focus lies on the design and manufacture of polymeric-based materials capable of incorporating antimicrobial agents excluding the aforementioned substances. In this sense, two of the emerging techniques for materials fabrication, namely, electrospinning and 3D printing, have gained significant attraction. In this article, we provide a summary of the most important findings that contribute to the development of antimicrobial systems using these technologies to incorporate various types of nanomaterials, organic molecules, or natural compounds with the required property. Furthermore, we discuss and consider the challenges that lie ahead in this research field for the coming years.
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Affiliation(s)
- Pablo C Caracciolo
- Biomedical Polymers Division, Research Institute for Materials Science and Technology (INTEMA), National University of Mar del Plata (UNMdP), National Scientific and Technical Research Council (CONICET), Av. Colón 10850, Mar del Plata 7600, Argentina
| | - Gustavo A Abraham
- Biomedical Polymers Division, Research Institute for Materials Science and Technology (INTEMA), National University of Mar del Plata (UNMdP), National Scientific and Technical Research Council (CONICET), Av. Colón 10850, Mar del Plata 7600, Argentina
| | - Ernesto S Battaglia
- Biomedical Polymers Division, Research Institute for Materials Science and Technology (INTEMA), National University of Mar del Plata (UNMdP), National Scientific and Technical Research Council (CONICET), Av. Colón 10850, Mar del Plata 7600, Argentina
| | - Silvestre Bongiovanni Abel
- Biomedical Polymers Division, Research Institute for Materials Science and Technology (INTEMA), National University of Mar del Plata (UNMdP), National Scientific and Technical Research Council (CONICET), Av. Colón 10850, Mar del Plata 7600, Argentina
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Dangol S, Poudel DK, Ojha PK, Maharjan S, Poudel A, Satyal R, Rokaya A, Timsina S, Dosoky NS, Satyal P, Setzer WN. Essential Oil Composition Analysis of Cymbopogon Species from Eastern Nepal by GC-MS and Chiral GC-MS, and Antimicrobial Activity of Some Major Compounds. Molecules 2023; 28:molecules28020543. [PMID: 36677603 PMCID: PMC9863348 DOI: 10.3390/molecules28020543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 12/30/2022] [Accepted: 01/03/2023] [Indexed: 01/09/2023] Open
Abstract
Cymbopogon species essential oil (EO) carries significant importance in pharmaceuticals, aromatherapy, food, etc. The chemical compositions of Cymbopogon spp. Viz. Cymbopogon winterianus (citronella) Cymbopogon citratus (lemongrass), and Cymbopogon martini (palmarosa) were analyzed by gas chromatography−mass spectrometry (GC-MS), enantiomeric distribution by chiral GC-MS, and antimicrobial activities of some selected pure major compound and root and leaves EOs of citronella. The EO of leaves of Cymbopogon spp. showed comparatively higher yield than roots or other parts. Contrary to citral (neral and geranial) being a predominant compound of Cymbopogon spp., α-elemol (53.1%), α-elemol (29.5%), geraniol (37.1%), and citral (90.4%) were detected as major compounds of the root, root hair with stalk, leaf, and root stalk with shoot of citronella EO, respectively. Palmarosa leaves’ EO contains neral (36.1%) and geranial (53.1) as the major compounds. In the roots of palmarosa EO, the prime components were α-elemol (31.5%), geranial (25.0%), and neral (16.6%). Similarly, lemongrass leaves’ EO contains geraniol (76.6%) and geranyl acetate (15.2%) as major compounds, while the root EO contains a higher amount of geraniol (87.9%) and lower amount of geranyl acetate (4.4%). This study reports for the first time chiral terpenoids from Cymbopogon spp. EOs. Chiral GC-MS gave specific enantiomeric distributions of nine, six, and five chiral terpenoids in the root, root stalk with a shoot, and leaves of citronella EOs, respectively. Likewise, four and three chiral terpenoids in the root and leaves of lemongrass oil followed by two chiral terpenoids in the leaves and root of palmarosa EOs each. Additionally, the root and leaves’ EOs of citronella exhibit noticeable activity on bacteria such as Staphylococcus aureus, Staphylococcus epidermidis, and Streptococcus pyogenes and fungus such as Candida albicans, Microsporum canis, and Trichophyton mentagrophytes. So, geranial-, neral-, geraniol-, and citronellal-rich EOs can be used as an alternative antimicrobial agent.
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Affiliation(s)
- Sabita Dangol
- Analytica Research Center, Kirtipur, Kathmandu 446088, Nepal
| | | | | | - Salina Maharjan
- Analytica Research Center, Kirtipur, Kathmandu 446088, Nepal
| | - Ambika Poudel
- Aromatic Plant Research Center, 230 N 1200 E, Suite 102, Lehi, UT 84043, USA
| | - Rakesh Satyal
- Analytica Research Center, Kirtipur, Kathmandu 446088, Nepal
| | - Anil Rokaya
- Analytica Research Center, Kirtipur, Kathmandu 446088, Nepal
| | - Sujan Timsina
- Analytica Research Center, Kirtipur, Kathmandu 446088, Nepal
| | - Noura S. Dosoky
- Aromatic Plant Research Center, 230 N 1200 E, Suite 102, Lehi, UT 84043, USA
| | - Prabodh Satyal
- Aromatic Plant Research Center, 230 N 1200 E, Suite 102, Lehi, UT 84043, USA
- Correspondence: author:
| | - William N. Setzer
- Aromatic Plant Research Center, 230 N 1200 E, Suite 102, Lehi, UT 84043, USA
- Department of Chemistry, University of Alabama in Huntsville, Huntsville, AL 35899, USA
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Oriola AO, Oyedeji AO. Essential Oils and Their Compounds as Potential Anti-Influenza Agents. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27227797. [PMID: 36431899 PMCID: PMC9693178 DOI: 10.3390/molecules27227797] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/07/2022] [Accepted: 11/08/2022] [Indexed: 11/16/2022]
Abstract
Essential oils (EOs) are chemical substances, mostly produced by aromatic plants in response to stress, that have a history of medicinal use for many diseases. In the last few decades, EOs have continued to gain more attention because of their proven therapeutic applications against the flu and other infectious diseases. Influenza (flu) is an infectious zoonotic disease that affects the lungs and their associated organs. It is a public health problem with a huge health burden, causing a seasonal outbreak every year. Occasionally, it comes as a disease pandemic with unprecedentedly high hospitalization and mortality. Currently, influenza is managed by vaccination and antiviral drugs such as Amantadine, Rimantadine, Oseltamivir, Peramivir, Zanamivir, and Baloxavir. However, the adverse side effects of these drugs, the rapid and unlimited variabilities of influenza viruses, and the emerging resistance of new virus strains to the currently used vaccines and drugs have necessitated the need to obtain more effective anti-influenza agents. In this review, essential oils are discussed in terms of their chemistry, ethnomedicinal values against flu-related illnesses, biological potential as anti-influenza agents, and mechanisms of action. In addition, the structure-activity relationships of lead anti-influenza EO compounds are also examined. This is all to identify leading agents that can be optimized as drug candidates for the management of influenza. Eucalyptol, germacrone, caryophyllene derivatives, eugenol, terpin-4-ol, bisabolene derivatives, and camphecene are among the promising EO compounds identified, based on their reported anti-influenza activities and plausible molecular actions, while nanotechnology may be a new strategy to achieve the efficient delivery of these therapeutically active EOs to the active virus site.
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The antifungal and antibiofilm activity of Cymbopogon nardus essential oil and citronellal on clinical strains of Candida albicans. Braz J Microbiol 2022; 53:1231-1240. [PMID: 35386096 PMCID: PMC9433487 DOI: 10.1007/s42770-022-00740-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 03/19/2022] [Indexed: 11/02/2022] Open
Abstract
OBJECTIVE This study investigated the antifungal and antibiofilm activity of Cymbopogon nardus essential oil (EO) and its major compound, citronellal, in association with miconazole and chlorhexidine on clinical strains of Candida albicans. The likely mechanism(s) of action of C. nardus EO and citronellal was further determined. MATERIALS AND METHODS The EO was chemically characterized by gas chromatography coupled with mass spectrometry (GC-MS). The antifungal activity (MIC/MFC) and antibiofilm effects of C. nardus EO and citronellal were determined by the microdilution method, and their likely mechanism(s) of action was determined by the sorbitol and ergosterol assays. Then, the samples were tested for a potential association with standard drugs through the checkerboard technique. Miconazole and chlorhexidine were used as positive controls and the assays were performed in triplicate. RESULTS The GC-MS analysis tentatively identified citronellal as the major compound in C. nardus EO. Both samples showed antifungal activity, with MIC of 256 µg/mL, as compared to 128 µg/mL and 8 µg/mL of miconazole and chlorhexidine, respectively. C. nardus EO and citronellal effectively inhibited biofilm formation (p < 0.05) and disrupted preformed biofilms (p < 0.0001). They most likely interact with the cell membrane, but not the cell wall, and did not present any synergistic activity when associated with standard drugs. CONCLUSION C. nardus EO and citronellal showed strong in vitro antifungal and antibiofilm activity on C. albicans. CLINICAL RELEVANCE Natural products have been historically bioprospected for novel solutions to control fungal biofilms. Our data provide relevant insights into the potential of C. nardus EO and citronellal for further clinical testing. However, additional bioavailability and toxicity studies must be carried out before these products can be used for the chemical control of oral biofilms.
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Antifungal and Antiaflatoxinogenic Effects of Cymbopogon citratus, Cymbopogon nardus, and Cymbopogon schoenanthus Essential Oils Alone and in Combination. J Fungi (Basel) 2022; 8:jof8020117. [PMID: 35205871 PMCID: PMC8878799 DOI: 10.3390/jof8020117] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 01/12/2022] [Accepted: 01/19/2022] [Indexed: 12/16/2022] Open
Abstract
The antifungal and antiaflatoxinogenic activities of the essential oils (EOs) from the leaves of Cymbopogon schoenanthus, Cymbopogon citratus, Cymbopogon nardus, and their pair combinations were investigated. Antifungal susceptibility and the efficacy of paired combinations of EOs were assessed using agar microdilution and checkerboard methods, respectively. Identification and quantification of chemical components of the EOs were carried out by gas chromatography-mass spectrometry and gas chromatography-flame ionization detector (GC-MS and GC-FID), respectively. Aflatoxins were separated and identified by High-Performance Liquid Chromatography (HPLC) and then quantified by spectrofluorescence. The EO of C. nardus exhibited the highest inhibitory activity against Aspergillus flavus and Aspergillus parasiticus. The combination of C. citratus and C. nardus and that of C. nardus and C. schoenanthus exhibited a synergistic effect against Aspergillus flavus and Aspergillus, respectively. Both C. citratus and C. schoenanthus EOs totally inhibited the synthesis of aflatoxin B1 at 1 µL/mL. C. citratus blocked the production of aflatoxins B2 and G2 at 0.5 µL/mL. Both C. citratus and C. schoenanthus totally hampered the production of the aflatoxin G1 at 0.75 µL/mL. The combination of C. citratus and C. schoenanthus completely inhibited the production of the four aflatoxins. The study shows that the combinations can be used to improve their antifungal and antiaflatoxinogenic activities.
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In Vitro and In Vivo Antidiabetic Potential of Monoterpenoids: An Update. MOLECULES (BASEL, SWITZERLAND) 2021; 27:molecules27010182. [PMID: 35011414 PMCID: PMC8746715 DOI: 10.3390/molecules27010182] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 12/20/2021] [Accepted: 12/25/2021] [Indexed: 12/11/2022]
Abstract
Diabetes mellitus (DM) is a chronic metabolic condition characterized by persistent hyperglycemia due to insufficient insulin levels or insulin resistance. Despite the availability of several oral and injectable hypoglycemic agents, their use is associated with a wide range of side effects. Monoterpenes are compounds extracted from different plants including herbs, vegetables, and fruits and they contribute to their aroma and flavor. Based on their chemical structure, monoterpenes are classified into acyclic, monocyclic, and bicyclic monoterpenes. They have been found to exhibit numerous biological and medicinal effects such as antipruritic, antioxidant, anti-inflammatory, and analgesic activities. Therefore, monoterpenes emerged as promising molecules that can be used therapeutically to treat a vast range of diseases. Additionally, monoterpenes were found to modulate enzymes and proteins that contribute to insulin resistance and other pathological events caused by DM. In this review, we highlight the different mechanisms by which monoterpenes can be used in the pharmacological intervention of DM via the alteration of certain enzymes, proteins, and pathways involved in the pathophysiology of DM. Based on the fact that monoterpenes have multiple mechanisms of action on different targets in in vitro and in vivo studies, they can be considered as lead compounds for developing effective hypoglycemic agents. Incorporating these compounds in clinical trials is needed to investigate their actions in diabetic patients in order to confirm their ability in controlling hyperglycemia.
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Truzzi E, Marchetti L, Benvenuti S, Righi V, Rossi MC, Gallo V, Bertelli D. A Novel qNMR Application for the Quantification of Vegetable Oils Used as Adulterants in Essential Oils. Molecules 2021; 26:5439. [PMID: 34576909 PMCID: PMC8470556 DOI: 10.3390/molecules26185439] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/02/2021] [Accepted: 09/03/2021] [Indexed: 11/16/2022] Open
Abstract
Essential oils (EOs) are more and more frequently adulterated due to their wide usage and large profit, for this reason accurate and precise authentication techniques are essential. This work aims at the application of qNMR as a versatile tool for the quantification of vegetable oils potentially usable as adulterants or diluents in EOs. This approach is based on the quantification of both 1H and 13C glycerol backbone signals, which are actually present in each vegetable oil containing triglycerides. For the validation, binary mixtures of rosemary EO and corn oil (0.8-50%) were prepared. To verify the general feasibility of this technique, other different mixtures including lavender, citronella, orange and peanut, almond, sunflower, and soy seed oils were analyzed. The results showed that the efficacy of this approach does not depend on the specific combination of EO and vegetable oil, ensuring its versatility. The method was able to determine the adulterant, with a mean accuracy of 91.81 and 89.77% for calculations made on 1H and 13C spectra, respectively. The high precision and accuracy here observed, make 1H-qNMR competitive with other well-established techniques. Considering the current importance of quality control of EOs to avoid fraudulent practices, this work can be considered pioneering and promising.
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Affiliation(s)
- Eleonora Truzzi
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 103, 41125 Modena, Italy; (E.T.); (L.M.); (S.B.)
| | - Lucia Marchetti
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 103, 41125 Modena, Italy; (E.T.); (L.M.); (S.B.)
- Doctorate School in Clinical and Experimental Medicine (CEM), University of Modena and Reggio Emilia, 41125 Modena, Italy
| | - Stefania Benvenuti
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 103, 41125 Modena, Italy; (E.T.); (L.M.); (S.B.)
| | - Valeria Righi
- Department of Life Quality Studies, Campus of Rimini, University of Bologna, Corso d’Augusto 237, 47921 Rimini, Italy;
| | - Maria Cecilia Rossi
- Centro Interdipartimentale Grandi Strumenti, University of Modena and Reggio Emilia, Via G. Campi 213/A, 41125 Modena, Italy;
| | - Vito Gallo
- Department DICATECh, Politecnico di Bari, Via Orabona 4, 70125 Bari, Italy;
| | - Davide Bertelli
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 103, 41125 Modena, Italy; (E.T.); (L.M.); (S.B.)
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Ideo T, Yoshida K, Sugimoto M. Regression Modeling and Virtual Screening of Natural Products Exhibiting Antibacterial Activity. An Application of Electronic-structure Informatics Descriptors. CHEM LETT 2021. [DOI: 10.1246/cl.200966] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Toshihiro Ideo
- Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Kazuki Yoshida
- Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Manabu Sugimoto
- Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
- Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
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Karpiński TM, Ożarowski M, Seremak-Mrozikiewicz A, Wolski H, Adamczak A. Plant Preparations and Compounds with Activities against Biofilms Formed by Candida spp. J Fungi (Basel) 2021; 7:jof7050360. [PMID: 34063007 PMCID: PMC8147947 DOI: 10.3390/jof7050360] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 04/30/2021] [Accepted: 05/01/2021] [Indexed: 01/12/2023] Open
Abstract
Fungi from the genus Candida are very important human and animal pathogens. Many strains can produce biofilms, which inhibit the activity of antifungal drugs and increase the tolerance or resistance to them as well. Clinically, this process leads to persistent infections and increased mortality. Today, many Candida species are resistant to drugs, including C. auris, which is a multiresistant pathogen. Natural compounds may potentially be used to combat multiresistant and biofilm-forming strains. The aim of this review was to present plant-derived preparations and compounds that inhibit Candida biofilm formation by at least 50%. A total of 29 essential oils and 16 plant extracts demonstrate activity against Candida biofilms, with the following families predominating: Lamiaceae, Myrtaceae, Asteraceae, Fabaceae, and Apiacae. Lavandula dentata (0.045–0.07 mg/L), Satureja macrosiphon (0.06–8 mg/L), and Ziziphora tenuior (2.5 mg/L) have the best antifungal activity. High efficacy has also been observed with Artemisia judaica, Lawsonia inermis, and Thymus vulgaris. Moreover, 69 plant compounds demonstrate activity against Candida biofilms. Activity in concentrations below 16 mg/L was observed with phenolic compounds (thymol, pterostilbene, and eugenol), sesquiterpene derivatives (warburganal, polygodial, and ivalin), chalconoid (lichochalcone A), steroidal saponin (dioscin), flavonoid (baicalein), alkaloids (waltheriones), macrocyclic bisbibenzyl (riccardin D), and cannabinoid (cannabidiol). The above compounds act on biofilm formation and/or mature biofilms. In summary, plant preparations and compounds exhibit anti-biofilm activity against Candida. Given this, they may be a promising alternative to antifungal drugs.
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Affiliation(s)
- Tomasz M. Karpiński
- Department of Medical Microbiology, Poznań University of Medical Sciences, Wieniawskiego 3, 61-712 Poznań, Poland
- Correspondence: ; Tel.: +48-61-854-61-38
| | - Marcin Ożarowski
- Department of Biotechnology, Institute of Natural Fibres and Medicinal Plants, National Research Institute, Wojska Polskiego 71b, 60-630 Poznań, Poland;
| | - Agnieszka Seremak-Mrozikiewicz
- Division of Perinatology and Women’s Diseases, Poznań University of Medical Sciences, Polna 33, 60-535 Poznań, Poland; (A.S.-M.); (H.W.)
- Laboratory of Molecular Biology in Division of Perinatology and Women’s Diseases, Poznań University of Medical Sciences, Polna 33, 60-535 Poznań, Poland
- Department of Pharmacology and Phytochemistry, Institute of Natural Fibres and Medicinal Plants, National Research Institute, Kolejowa 2, 62-064 Plewiska, Poland
| | - Hubert Wolski
- Division of Perinatology and Women’s Diseases, Poznań University of Medical Sciences, Polna 33, 60-535 Poznań, Poland; (A.S.-M.); (H.W.)
- Division of Gynecology and Obstetrics, Podhale Multidisciplinary Hospital, Szpitalna 14, 34-400 Nowy Targ, Poland
| | - Artur Adamczak
- Department of Botany, Breeding and Agricultural Technology of Medicinal Plants, Institute of Natural Fibres and Medicinal Plants, National Research Institute, Kolejowa 2, 62-064 Plewiska, Poland;
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Gaspar de Toledo L, Dos Santos Ramos MA, Bento da Silva P, Rodero CF, de Sá Gomes V, Noronha da Silva A, Pavan FR, da Silva IC, Bombarda Oda F, Flumignan DL, Gonzaga Dos Santos A, Chorilli M, Gottardo de Almeida MT, Bauab TM. Improved in vitro and in vivo Anti- Candida albicans Activity of Cymbopogon nardus Essential Oil by Its Incorporation into a Microemulsion System. Int J Nanomedicine 2020; 15:10481-10497. [PMID: 33402821 PMCID: PMC7778679 DOI: 10.2147/ijn.s275258] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 10/01/2020] [Indexed: 12/14/2022] Open
Abstract
Purpose Vulvovaginal candidiasis (VVC) is an opportunistic fungal infection that adversely affects a woman's health, due to unpleasant symptoms, therapeutic challenges, and the emergence of resistant strains. The association of natural products and nanotechnology is important to improve the antifungal potential of medicinal plants. We aimed to evaluate the in vitro and in vivo anti-Candida albicans activity of unloaded (EO) and loaded (ME+EO) essential oil of Cymbopogon nardus in the microemulsion (ME). Methods The chemical analysis of the EO was performed by gas chromatography-mass spectrometry. The ME and ME+EO were characterized by scattering, zeta potential, polarized light microscopy, rheological assays, mucoadhesiveness and transmission electronic microscopy. The in vitro antifungal activity of the EO and ME+EO were evaluated by microdilution technique. The toxicity of EO and ME+EO was analyzed on human cell line HaCat and using alternative model assay with Artemia salina. The experimental in vivo VVC was performed in female mice (C57BL/6). Results The main compounds of the EO were found to be citronellal, geranial, geraniol, citronellol, and neral. The formulations exhibited suitable size, homogeneity, negative charge, isotropic behavior, highly organized structure, and pseudoplastic behavior, for vaginal application. TEM photomicrographs showed possible EO droplets inside the spherical structures. The EO, when loaded into the ME, exhibited an improvement in its antifungal action against C. albicans. The EO was not toxic against brine shrimp nauplii. An in vivo VVC assay showed that the use of the ME significantly improved the action of the EO, since only the ME+EO promoted the eradication of the fungal vaginal infection on the third day of treatment. Conclusion The EO and ME+EO are promising alternatives for the control of fungal infections caused by C. albicans, once the use of nanotechnology significantly improved the antifungal action of the EO, especially in an in vivo model of VVC.
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Affiliation(s)
- Luciani Gaspar de Toledo
- School of Pharmaceutical Sciences, Department of Biological Sciences, São Paulo State University (UNESP), São Paulo, Brazil
| | | | - Patrícia Bento da Silva
- Department of Genetics and Morphology, University of Brasília (UnB), Institute of Biological Sciences, Brasília, Distrito Federal, Brazil
| | - Camila Fernanda Rodero
- School of Pharmaceutical Sciences, Department of Drug and Medicines, São Paulo State University (UNESP), São Paulo, Brazil
| | - Veridiana de Sá Gomes
- School of Pharmaceutical Sciences, Department of Biological Sciences, São Paulo State University (UNESP), São Paulo, Brazil
| | - Anderson Noronha da Silva
- School of Pharmaceutical Sciences, Department of Biological Sciences, São Paulo State University (UNESP), São Paulo, Brazil
| | - Fernando Rogério Pavan
- School of Pharmaceutical Sciences, Department of Biological Sciences, São Paulo State University (UNESP), São Paulo, Brazil
| | - Isabel Cristiane da Silva
- School of Pharmaceutical Sciences, Department of Biological Sciences, São Paulo State University (UNESP), São Paulo, Brazil
| | - Fernando Bombarda Oda
- School of Pharmaceutical Sciences, Department of Natural Active Principles and Toxicology, São Paulo State University (UNESP), São Paulo, Brazil
| | - Danilo Luis Flumignan
- São Paulo Federal Institute of Education, Science and Technology (IFSP), São Paulo, Brazil
| | - André Gonzaga Dos Santos
- School of Pharmaceutical Sciences, Department of Natural Active Principles and Toxicology, São Paulo State University (UNESP), São Paulo, Brazil
| | - Marlus Chorilli
- School of Pharmaceutical Sciences, Department of Drug and Medicines, São Paulo State University (UNESP), São Paulo, Brazil
| | | | - Taís Maria Bauab
- School of Pharmaceutical Sciences, Department of Biological Sciences, São Paulo State University (UNESP), São Paulo, Brazil
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16
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Araujo VHS, Delello Di Filippo L, Duarte JL, Spósito L, Camargo BAFD, da Silva PB, Chorilli M. Exploiting solid lipid nanoparticles and nanostructured lipid carriers for drug delivery against cutaneous fungal infections. Crit Rev Microbiol 2020; 47:79-90. [PMID: 33156736 DOI: 10.1080/1040841x.2020.1843399] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Several types of cutaneous fungal infections can affect the population worldwide, such as dermatophytosis, cutaneous candidiasis, onychomycosis, and sporotrichosis. However, oral treatments have pronounced adverse effects, making the topical route an alternative to avoid this disadvantage. On the other hand, currently available pharmaceutical forms designed for topical application, such as gels and creams, do not demonstrate effective retention of biomolecules in the upper layers of the skin. An interesting approach to optimise biomolecules' activity in the skin is the use of nanosystems for drug delivery, especially solid lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC), which in the past decade has shown advantages like increased adhesiveness, great occlusive properties and higher biomolecule deposition in stratum corneum when designed for topical application. Considering the demand for more effective therapeutic alternatives and the promising characteristics of SLN and NLC for topical application, the present study sought to gather studies that investigated the potential of using SLN and NLC for the treatment of cutaneous fungal infections. Studies demonstrated that these nanosystems showed optimisation, mostly, of the effectiveness of biomolecules besides other biopharmaceutical properties, in addition to offering potential occlusion and hydration of the applied region.
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Affiliation(s)
| | | | | | - Larissa Spósito
- School of Pharmaceutical Sciences, São Paulo State University, Araraquara, Brazil
| | | | - Patricia Bento da Silva
- Laboratory of Nanobiotechnology, Department of Genetics and Morphology, Institute of Biological Sciences, University of Brasilia, Brasilia, Brazil
| | - Marlus Chorilli
- School of Pharmaceutical Sciences, São Paulo State University, Araraquara, Brazil
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17
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Wei Y, Zhao Y, Zhou D, Qi D, Li K, Tang W, Chen Y, Jing T, Zang X, Xie J, Wang W. A Newly Isolated Streptomyces sp. YYS-7 With a Broad-Spectrum Antifungal Activity Improves the Banana Plant Resistance to Fusarium oxysporum f. sp. cubense Tropical Race 4. Front Microbiol 2020; 11:1712. [PMID: 32903773 PMCID: PMC7438861 DOI: 10.3389/fmicb.2020.01712] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 06/30/2020] [Indexed: 12/17/2022] Open
Abstract
Fusarium wilt of banana caused by Fusarium oxysporum f. sp. cubense (Foc) is one of the most destructive diseases, severely limiting the development of banana industry. Especially, Foc tropical race 4 (Foc TR4) can infect and destroy almost all banana cultivars. Until now, there is still a lack of an effective method for controlling fusarium wilt. A biocontrol strategy using Actinobacteria is considered as a promising method for management of disease and pest. In this study, 229 Actinobacteria were isolated from rhizosphere soil samples of a primitive ecological mountain. An actinobacterium strain marked with YYS-7 exhibited a high antifungal activity against Foc TR4. Combining the physiological and biochemical characteristics as well as alignment of the 16S rRNA sequence, the strain YYS-7 was assigned to Streptomyces sp. The crude extracts of Streptomyces sp. YYS-7 obviously inhibited the mycelial growth of Foc TR4. The cell integrity and ultrastructure were seriously destroyed. In addition, Streptomyces sp. YYS-7 and crude extracts also showed a broad-spectrum antifungal activity against the selected seven phytopathogenic fungi. A gas chromatography-mass spectrometry (GC-MS) was used to predict the antifungal metabolites. A total of eleven different compounds were identified, including phenolic compounds, hydrocarbons, esters and acids. In the pot experiment, the crude extracts can significantly improve the banana plant’s resistance to Foc TR4. Hence, Streptomyces sp. YYS-7 will be a potential biocontrol agent for the biofertilizer exploitation and the discovery of new bioactive substances.
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Affiliation(s)
- Yuanyuan Wei
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China.,College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, China
| | - Yankun Zhao
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Dengbo Zhou
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Dengfeng Qi
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Kai Li
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Wen Tang
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Yufeng Chen
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Tao Jing
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Xiaoping Zang
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Jianghui Xie
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Wei Wang
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
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18
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Jugreet BS, Suroowan S, Rengasamy RK, Mahomoodally MF. Chemistry, bioactivities, mode of action and industrial applications of essential oils. Trends Food Sci Technol 2020. [DOI: 10.1016/j.tifs.2020.04.025] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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19
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Almeida Furquim de Camargo B, Soares Silva DE, Noronha da Silva A, Campos DL, Machado Ribeiro TR, Mieli MJ, Borges Teixeira Zanatta M, Bento da Silva P, Pavan FR, Gallina Moreira C, Resende FA, Menegário AA, Chorilli M, Vieira de Godoy Netto A, Bauab TM. New Silver(I) Coordination Compound Loaded into Polymeric Nanoparticles as a Strategy to Improve In Vitro Anti-Helicobacter pylori Activity. Mol Pharm 2020; 17:2287-2298. [DOI: 10.1021/acs.molpharmaceut.9b01264] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | | | - Anderson Noronha da Silva
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara 14800-903, São Paulo, Brazil
| | - Débora Leite Campos
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara 14800-903, São Paulo, Brazil
| | | | - Maria Júlia Mieli
- Department of Biological Sciences and Health, University of Araraquara, Araraquara 14801-340, São Paulo, Brazil
| | | | - Patrícia Bento da Silva
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara 14800-903, São Paulo, Brazil
| | - Fernando Rogerio Pavan
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara 14800-903, São Paulo, Brazil
| | - Cristiano Gallina Moreira
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara 14800-903, São Paulo, Brazil
| | - Flávia Aparecida Resende
- Department of Biological Sciences and Health, University of Araraquara, Araraquara 14801-340, São Paulo, Brazil
| | - Amauri Antônio Menegário
- Environmental Studies Center, São Paulo State University (UNESP), Rio Claro 13506-900, São Paulo, Brazil
| | - Marlus Chorilli
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara 14800-903, São Paulo, Brazil
| | | | - Taís Maria Bauab
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara 14800-903, São Paulo, Brazil
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20
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C. de Lima L, A.S. Ramos M, Toledo LGD, Rodero CF, Hilário F, dos Santos LC, Chorilli M, Bauab TM. Syngonanthus nitens (Bong.) Ruhland Derivatives Loaded into a Lipid Nanoemulsion for Enhanced Antifungal Activity Against Candida parapsilosis. Curr Pharm Des 2020; 26:1556-1565. [DOI: 10.2174/1381612826666200317131041] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 03/08/2020] [Indexed: 02/07/2023]
Abstract
Background:
Vaginal infections caused by non-albicans species have become common in women of
all age groups. The resistance of species such as Candida parapsilosis to the various antifungal agents is a risk
factor attributed to these types of infections, which instigates the search for new sources of active compounds in
vulvovaginal candidiasis (VCC) therapy.
Objective:
This study evaluated the antifungal activity of Syngonanthus nitens Bong. (Ruhland) derivatives and
employed a lipid nanoemulsion as a delivery system.
Methods:
In this study, a lipid nanoemulsion was employed as a delivery system composed of Cholesterol (10%),
soybean phosphatidylcholine: Brij 58 (1: 2) and PBS (pH 7.4) with the addition of 0.5% of a chitosan dispersion
(80%), and evaluated the antifungal activity of S. nitens Bong. (Ruhland) derivatives against planktonic cells and
biofilms of Candida parapsilosis. By a biomonitoring fractionation, the crude extract (EXT) and one fraction (F2)
were selected and incorporated into a lipid nanoemulsion (NL) composed of cholesterol (10%), a 1:2 mixture of
soybean phosphatidylcholine:polyoxyethylene -20- cetyl ether (10%), and phosphate buffer solution (pH 7.4)
with a 0.5% chitosan dispersion (80%). The NL presented a diameter size between 50-200 nm, pseudoplastic
behavior, and positive charge. The EXT and five fractions were active against planktonic cells.
Results and Discussion:
The incorporation of EXT and F2 into the NL increased antifungal activity and enhanced
the anti-biofilm potential. This study classified the use of an NL as an important tool for the administration
of S. nitens derivatives in cases of infections caused by this C. parapsisilosis.
Conclusion:
This work concluded that S. nitens derivatives were important sources of active molecules against C.
parapsilosis and the use of a lipid nanoemulsion was an important tool to promote more effective F2 release and
to improve the antifungal activity aiming the control of C. parapsilosis infections.
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Affiliation(s)
- Laura C. de Lima
- Department of Biological Sciences, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Campus Araraquara, São Paulo State, Brazil
| | - Matheus A.S. Ramos
- Department of Biological Sciences, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Campus Araraquara, São Paulo State, Brazil
| | - Luciani G. de Toledo
- Department of Biological Sciences, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Campus Araraquara, São Paulo State, Brazil
| | - Camila F. Rodero
- Department of Drug and Medicines, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Campus Araraquara, São Paulo State, Brazil
| | - Felipe Hilário
- Department of Biological Sciences, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Campus Araraquara, São Paulo State, Brazil
| | - Lourdes C. dos Santos
- Department of Organic Chemistry, São Paulo State University (UNESP), Chemistry Institute, Campus Araraquara, São Paulo State, Brazil
| | - Marlus Chorilli
- Department of Drug and Medicines, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Campus Araraquara, São Paulo State, Brazil
| | - Taís M. Bauab
- Department of Biological Sciences, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Campus Araraquara, São Paulo State, Brazil
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21
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Lira MHPD, Andrade Júnior FPD, Moraes GFQ, Macena GDS, Pereira FDO, Lima IO. Antimicrobial activity of geraniol: an integrative review. JOURNAL OF ESSENTIAL OIL RESEARCH 2020. [DOI: 10.1080/10412905.2020.1745697] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Maria Helena Pereira de Lira
- Natural Sciences and Biotechnology, Education and Health Center (Ces), Federal University of Campina Grande (UFCG), Cuité, Brazil
| | | | | | | | | | - Igara Oliveira Lima
- Health Academic Unit and of Post-Graduation in Natural Sciences and Biotechnology, CES/UFCG, Cuité, Brazil
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22
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Córdoba S, Vivot W, Szusz W, Albo G. Antifungal Activity of Essential Oils Against Candida Species Isolated from Clinical Samples. Mycopathologia 2019; 184:615-623. [PMID: 31359292 DOI: 10.1007/s11046-019-00364-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 07/18/2019] [Indexed: 12/30/2022]
Abstract
We evaluated the in vitro antifungal activity of essential oils obtained from the aromatic plants Laurus nobilis, Thymus vulgaris, Mentha piperita, Cymbopogon citratus and Lippia junelliana against the following Candida species isolated from clinical samples: C. krusei (n = 10); C. albicans (n = 50); C. glabrata (n = 70) and C. parapsilosis (n = 80). The minimal inhibitory concentration (MIC) was determined according to EDef 7.3.1 document from EUCAST. Amphotericin B and fluconazole were the antifungal drugs used as inhibition control. The concentration ranges evaluated were 0.4-800 and 0.03-128 mg l-1 for essential oils and antifungal drugs, respectively. MIC50 and MIC90, mode and ranges were calculated. All the Candida spp. evaluated were susceptible to amphotericin B (MIC ≤ 1 mg l-1), while fluconazole was inactive for C. krusei (MIC ≥ 32 mg l-1) and intermediate for C. glabrata (MIC≤ 32 mg l-1). The essential oils showed antifungal activity on Candida spp. tested with MIC90 values ranging from 0.8 to 800 mg l-1. In general, the most active essential oils were L. nobilis and T. vulgaris (MIC90 0.8-0.16 mg l-1), and the least active was C. officinalis (MIC90 400-800 mg l-1). C. krusei was inhibited by 5/6 of the essential oils evaluated, and C. glabrata was the least susceptible one. This in vitro study confirms the antifungal activity of these six essential oils assayed which could be a potential source of new molecules useful to control fungal infections caused by some Candida species, including those resistant to antifungal drugs.
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Affiliation(s)
- S Córdoba
- Departamento Micología, INEI ANLIS "Dr. Carlos G. Malbrán", Av. Vélez Sarsfield 563, CP 1281, Buenos Aires, Argentina. .,Cátedra Micología Médica e Industrial, Universidad Nacional de La Plata, Calle 60 y 119. La Plata, CP 1900, Buenos Aires, Argentina.
| | - W Vivot
- Departamento Micología, INEI ANLIS "Dr. Carlos G. Malbrán", Av. Vélez Sarsfield 563, CP 1281, Buenos Aires, Argentina
| | - W Szusz
- Departamento Micología, INEI ANLIS "Dr. Carlos G. Malbrán", Av. Vélez Sarsfield 563, CP 1281, Buenos Aires, Argentina
| | - G Albo
- Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata, Calle 60 y 119. La Plata, CP 1900, Buenos Aires, Argentina
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Spósito L, Oda FB, Vieira JH, Carvalho FA, Dos Santos Ramos MA, de Castro RC, Crevelin EJ, Crotti AEM, Santos AG, da Silva PB, Chorilli M, Bauab TM. In vitro and in vivo anti-Helicobacter pylori activity of Casearia sylvestris leaf derivatives. JOURNAL OF ETHNOPHARMACOLOGY 2019; 233:1-12. [PMID: 30594606 DOI: 10.1016/j.jep.2018.12.032] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 12/14/2018] [Accepted: 12/16/2018] [Indexed: 05/27/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The number of bacterial strains that are resistant to multiple conventional antimicrobial agents is increasing. In this context, natural products have been widely used as a strategy to treat diseases caused by bacteria. Infections by Helicobacter pylori have attracted attention because they are directly related to severe gastric medical conditions. Casearia sylvestris Swartz, popularly known as guaçatonga, is largely employed to treat gastric disorders in Brazilian folk medicine. This plant species has aroused much interest mainly because it displays anti-inflammatory activity and can act as an antiulcer agent. AIM OF THE STUDY To evaluate the in vitro and in vivo anti-H. pylori action of C. sylvestris leaf derivatives incorporated or not in a nanostructured drug delivery system. MATERIALS AND METHODS The essential oil (obtained by hydrodistillation) and ethanolic extract (obtained by maceration) were obtained from C. sylvestris leaves. The ethanolic extract was submitted to fractionation through solid phase extraction and column chromatography, to yield the ethanolic fractions. Hydrolyzed casearin J was achieved by submitting isolated casearin J to acid hydrolysis. The derivatives were chemically characterized by nuclear magnetic resonance (NMR), gas chromatography (GC), and gas chromatography-mass spectrometry (GC-MS) analyses. A nanostructured lipid system was used as drug delivery system. To assess the in vitro antibacterial activity of C. sylvestris leaf essential oil, ethanolic extract, and derivatives, microdilution, biofilm, and time-kill assays were performed against H. pylori ATCC 43504. Finally, the in vivo action was investigated by employing male Wistar rats experimentally infected with H. pylori. RESULTS Many C. sylvestris leaf derivatives presented significant in vitro activity against H. pylori. Among the derivatives, fraction 2 (F2) was the most effective. In vivo tests showed that both the ethanolic extract and F2 decreased the ulcerative lesion size, but only the ethanolic extract eradicated H. pylori from the gastric lesions. Incorporation of plant derivatives in nanostructured lipid system blunted the in vitro action, as demonstrated by the microdilution assay. However, this incorporation improved the ethanolic extract activity against biofilms. CONCLUSION C. sylvestris leaf derivatives are effective against H. pylori both in vitro and in vivo. According to phytochemical analyses, these derivatives are rich in terpenoids, which could be related to the anti-H. pylori action. Synergism could also underlie C. sylvestris efficacy judging from the fact that the sub-fractions and isolated compounds had lower activity than the extract. Incorporation in a nanostructured lipid system did not improve the activity of the compounds in our in vivo protocol.
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Affiliation(s)
- Larissa Spósito
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, SP, Brazil
| | - Fernando Bombarda Oda
- Department of Natural Active Principles and Toxicology, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, SP, Brazil
| | - Júlia Hunger Vieira
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, SP, Brazil
| | - Flávio Alexandre Carvalho
- Department of Natural Active Principles and Toxicology, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, SP, Brazil
| | | | - Rogério Cardoso de Castro
- Department of Natural Active Principles and Toxicology, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, SP, Brazil
| | - Eduardo José Crevelin
- Department of Chemistry, Faculty of Philosophy, Sciences and Letters, USP, Ribeirão Preto, SP, Brazil
| | | | - André Gonzaga Santos
- Department of Natural Active Principles and Toxicology, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, SP, Brazil
| | - Patrícia Bento da Silva
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, SP, Brazil
| | - Marlus Chorilli
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, SP, Brazil
| | - Taís Maria Bauab
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, SP, Brazil.
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de Oliveira Santos GC, Vasconcelos CC, Lopes AJO, de Sousa Cartágenes MDS, Filho AKDB, do Nascimento FRF, Ramos RM, Pires ERRB, de Andrade MS, Rocha FMG, de Andrade Monteiro C. Candida Infections and Therapeutic Strategies: Mechanisms of Action for Traditional and Alternative Agents. Front Microbiol 2018; 9:1351. [PMID: 30018595 PMCID: PMC6038711 DOI: 10.3389/fmicb.2018.01351] [Citation(s) in RCA: 138] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Accepted: 06/05/2018] [Indexed: 12/14/2022] Open
Abstract
The Candida genus comprises opportunistic fungi that can become pathogenic when the immune system of the host fails. Candida albicans is the most important and prevalent species. Polyenes, fluoropyrimidines, echinocandins, and azoles are used as commercial antifungal agents to treat candidiasis. However, the presence of intrinsic and developed resistance against azole antifungals has been extensively documented among several Candida species. The advent of original and re-emergence of classical fungal diseases have occurred as a consequence of the development of the antifungal resistance phenomenon. In this way, the development of new satisfactory therapy for fungal diseases persists as a major challenge of present-day medicine. The design of original drugs from traditional medicines provides new promises in the modern clinic. The urgent need includes the development of alternative drugs that are more efficient and tolerant than those traditional already in use. The identification of new substances with potential antifungal effect at low concentrations or in combination is also a possibility. The present review briefly examines the infections caused by Candida species and focuses on the mechanisms of action associated with the traditional agents used to treat those infections, as well as the current understanding of the molecular basis of resistance development in these fungal species. In addition, this review describes some of the promising alternative molecules and/or substances that could be used as anticandidal agents, their mechanisms of action, and their use in combination with traditional drugs.
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Affiliation(s)
- Giselle C. de Oliveira Santos
- Programa de Doutorado em Biotecnologia da Rede Nordeste de Biotecnologia (RENORBIO), Universidade Federal do Maranhão, São Luís, Brazil
| | - Cleydlenne C. Vasconcelos
- Programa de Doutorado em Biotecnologia da Rede Nordeste de Biotecnologia (RENORBIO), Universidade Federal do Maranhão, São Luís, Brazil
| | - Alberto J. O. Lopes
- Postgraduate Program in Health Sciences, Universidade Federal do Maranhão, São Luís, Brazil
| | | | - Allan K. D. B. Filho
- Departamento de Engenharia Elétrica, Programa de Doutorado em Biotecnologia da Rede Nordeste de Biotecnologia (RENORBIO), Universidade Federal do Maranhão, São Luís, Brazil
| | | | - Ricardo M. Ramos
- Department of Information, Environment, Health and Food Production, Laboratory of Information Systems, Federal Institute of Piauí, Teresina, Brazil
| | | | - Marcelo S. de Andrade
- Postgraduate Program in Health Sciences, Universidade Federal do Maranhão, São Luís, Brazil
| | - Flaviane M. G. Rocha
- Laboratório de Micologia Médica, Programa de Mestrado em Biologia Parasitária, Universidade Ceuma, São Luís, Brazil
| | - Cristina de Andrade Monteiro
- Laboratório de Micologia Médica, Programa de Mestrado em Biologia Parasitária, Universidade Ceuma, São Luís, Brazil
- Departmento de Biologia, Instituto Federal do Maranhão, São Luís, Brazil
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Petrović M, Bonvin D, Hofmann H, Mionić Ebersold M. Fungicidal PMMA-Undecylenic Acid Composites. Int J Mol Sci 2018; 19:E184. [PMID: 29316713 PMCID: PMC5796133 DOI: 10.3390/ijms19010184] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 12/24/2017] [Accepted: 01/01/2018] [Indexed: 12/12/2022] Open
Abstract
Undecylenic acid (UA), known as antifungal agent, still cannot be used to efficiently modify commercial dental materials in such a way that this affects Candida. Actually, issues with Candida infections and fungal resistance compromise the use of Poly(methyl-methacrylate) (PMMA) as dental material. The challenge remains to turn PMMA into an antifugal material, which can ideally affect both sessile (attached) and planktonic (free-floating) Candida cells. We aimed to tackle this challenge by designing PMMA-UA composites with different UA concentrations (3-12%). We studied their physico-chemical properties, the antifungal effect on Candida and the cytotoxicity toward human cells. We found that UA changes the PMMA surface into a more hydrophilic one. Mainly, as-preparation composites with ≥6% UA reduced sessile Candida for >90%. After six days, the composites were still efficiently reducing the sessile Candida cells (for ~70% for composites with ≥6% UA). Similar results were recorded for planktonic Candida. Moreover, the inhibition zone increased along with the UA concentration. The antifungal effect of UA was also examined at the surface of an UA-loaded agar and the minimal inhibitory concentration (MIC90) was below the lowest-studied 0.0125% UA. Furthermore, the embedded filamentation test after 24 h and 48 h showed complete inhibition of the Candida growth at 0.4% UA.
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Affiliation(s)
- Milica Petrović
- Powder Technology Laboratory, Institute of Materials, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.
- Faculty of Medicine, University of Nis, 18006 Niš, Serbia.
| | - Debora Bonvin
- Powder Technology Laboratory, Institute of Materials, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.
| | - Heinrich Hofmann
- Powder Technology Laboratory, Institute of Materials, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.
| | - Marijana Mionić Ebersold
- Powder Technology Laboratory, Institute of Materials, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.
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Budzyńska A, Różalska S, Sadowska B, Różalska B. Candida albicans/Staphylococcus aureus Dual-Species Biofilm as a Target for the Combination of Essential Oils and Fluconazole or Mupirocin. Mycopathologia 2017; 182:989-995. [PMID: 28823093 PMCID: PMC5684249 DOI: 10.1007/s11046-017-0192-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 08/08/2017] [Indexed: 02/06/2023]
Abstract
The effectiveness of essential oils (EOs), fluconazole (FLU) and mupirocin (MUP) used alone or in combination against mono-species and mixed Candida albicans/Staphylococcus aureus biofilms was examined. An experimentally established dual-species biofilm model, verified by fluorescence microscopy and viable cell counting, was used. Selected commercial EOs were tested: geranium, citronella and clove oils, which have been chemically characterized and found to differ in the content of the main components (qualitative and quantitative). As expected, C. albicans and S. aureus biofilms were less susceptible to fluconazole and mupirocin action, respectively, compared to the planktonic counterparts. However, the drug effectiveness in combination with the EOs was significantly improved, giving enhancement of biofilm eradication than caused by the antibiotics alone. Moreover, dual-species biofilm formation was limited by sub-MIC of EOs, and preformed mixed biofilm was eliminated more efficiently by combined action of drugs and EOs.
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Affiliation(s)
- Aleksandra Budzyńska
- Laboratory of Microbiological and Technical Services, University of Lodz, Banacha 12/16, 90-237, Lodz, Poland
| | - Sylwia Różalska
- Department of Industrial Microbiology and Biotechnology, University of Lodz, Banacha 12/16, 90-237, Lodz, Poland
| | - Beata Sadowska
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, Institute of Microbiology, Biotechnology and Immunology, University of Lodz, Banacha 12/16, 90-237, Lodz, Poland
| | - Barbara Różalska
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, Institute of Microbiology, Biotechnology and Immunology, University of Lodz, Banacha 12/16, 90-237, Lodz, Poland.
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Essential Oils and Antifungal Activity. Pharmaceuticals (Basel) 2017; 10:ph10040086. [PMID: 29099084 PMCID: PMC5748643 DOI: 10.3390/ph10040086] [Citation(s) in RCA: 243] [Impact Index Per Article: 34.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 10/27/2017] [Accepted: 10/30/2017] [Indexed: 12/25/2022] Open
Abstract
Since ancient times, folk medicine and agro-food science have benefitted from the use of plant derivatives, such as essential oils, to combat different diseases, as well as to preserve food. In Nature, essential oils play a fundamental role in protecting the plant from biotic and abiotic attacks to which it may be subjected. Many researchers have analyzed in detail the modes of action of essential oils and most of their components. The purpose of this brief review is to describe the properties of essential oils, principally as antifungal agents, and their role in blocking cell communication mechanisms, fungal biofilm formation, and mycotoxin production.
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Antifungal Resistance, Metabolic Routes as Drug Targets, and New Antifungal Agents: An Overview about Endemic Dimorphic Fungi. Mediators Inflamm 2017; 2017:9870679. [PMID: 28694566 PMCID: PMC5485324 DOI: 10.1155/2017/9870679] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 04/28/2017] [Accepted: 05/23/2017] [Indexed: 12/30/2022] Open
Abstract
Diseases caused by fungi can occur in healthy people, but immunocompromised patients are the major risk group for invasive fungal infections. Cases of fungal resistance and the difficulty of treatment make fungal infections a public health problem. This review explores mechanisms used by fungi to promote fungal resistance, such as the mutation or overexpression of drug targets, efflux and degradation systems, and pleiotropic drug responses. Alternative novel drug targets have been investigated; these include metabolic routes used by fungi during infection, such as trehalose and amino acid metabolism and mitochondrial proteins. An overview of new antifungal agents, including nanostructured antifungals, as well as of repositioning approaches is discussed. Studies focusing on the development of vaccines against antifungal diseases have increased in recent years, as these strategies can be applied in combination with antifungal therapy to prevent posttreatment sequelae. Studies focused on the development of a pan-fungal vaccine and antifungal drugs can improve the treatment of immunocompromised patients and reduce treatment costs.
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