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Tavvabi-Kashani N, Hasanpour M, Baradaran Rahimi V, Vahdati-Mashhadian N, Askari VR. Pharmacodynamic, pharmacokinetic, toxicity, and recent advances in Eugenol's potential benefits against natural and chemical noxious agents: A mechanistic review. Toxicon 2024; 238:107607. [PMID: 38191032 DOI: 10.1016/j.toxicon.2024.107607] [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: 12/12/2023] [Accepted: 01/03/2024] [Indexed: 01/10/2024]
Abstract
The active biological phytochemicals, crucial compounds employed in creating hundreds of medications, are derived from valuable and medicinally significant plants. These phytochemicals offer excellent protection from various illnesses, including inflammatory disorders and chronic conditions caused by oxidative stress. A phenolic monoterpenoid known as eugenol (EUG), it is typically found in the essential oils of many plant species from the Myristicaceae, Myrtaceae, Lamiaceae, and Lauraceae families. One of the main ingredients of clove oil (Syzygium aromaticum (L.), Myrtaceae), it has several applications in industry, including flavoring food, pharmaceutics, dentistry, agriculture, and cosmeceuticals. Due to its excellent potential for avoiding many chronic illnesses, it has lately attracted attention. EUG has been classified as a nonmutant, generally acknowledged as a safe (GRAS) chemical by the World Health Organization (WHO). According to the existing research, EUG possesses notable anti-inflammatory, antioxidant, analgesic, antibacterial, antispasmodic, and apoptosis-promoting properties, which have lately gained attention for its ability to control chronic inflammation, oxidative stress, and mitochondrial malfunction and dramatically impact human wellness. The purpose of this review is to evaluate the scientific evidence from the most significant research studies that have been published regarding the protective role and detoxifying effects of EUG against a wide range of toxins, including biological and chemical toxins, as well as different drugs and pesticides that produce a variety of toxicities, throughout view of the possible advantages of EUG.
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Affiliation(s)
- Negin Tavvabi-Kashani
- Student Research Committee, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran; Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Maede Hasanpour
- Department of Pharmacognosy and Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Vafa Baradaran Rahimi
- Pharmacological Research Center of Medicinal Plants, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Cardiovascular Diseases, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Naser Vahdati-Mashhadian
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Vahid Reza Askari
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; Pharmacological Research Center of Medicinal Plants, Mashhad University of Medical Sciences, Mashhad, Iran.
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Ashfaq R, Rasul A, Asghar S, Kovács A, Berkó S, Budai-Szűcs M. Lipid Nanoparticles: An Effective Tool to Improve the Bioavailability of Nutraceuticals. Int J Mol Sci 2023; 24:15764. [PMID: 37958750 PMCID: PMC10648376 DOI: 10.3390/ijms242115764] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 10/26/2023] [Accepted: 10/28/2023] [Indexed: 11/15/2023] Open
Abstract
Nano-range bioactive colloidal carrier systems are envisaged to overcome the challenges associated with treatments of numerous diseases. Lipid nanoparticles (LNPs), one of the extensively investigated drug delivery systems, not only improve pharmacokinetic parameters, transportation, and chemical stability of encapsulated compounds but also provide efficient targeting and reduce the risk of toxicity. Over the last decades, nature-derived polyphenols, vitamins, antioxidants, dietary supplements, and herbs have received more attention due to their remarkable biological and pharmacological health and medical benefits. However, their poor aqueous solubility, compromised stability, insufficient absorption, and accelerated elimination impede research in the nutraceutical sector. Owing to the possibilities offered by various LNPs, their ability to accommodate both hydrophilic and hydrophobic molecules and the availability of various preparation methods suitable for sensitive molecules, loading natural fragile molecules into LNPs offers a promising solution. The primary objective of this work is to explore the synergy between nature and nanotechnology, encompassing a wide range of research aimed at encapsulating natural therapeutic molecules within LNPs.
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Affiliation(s)
- Rabia Ashfaq
- Institute of Pharmaceutical Technology and Regulatory Affairs, Faculty of Pharmacy, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary; (R.A.)
| | - Akhtar Rasul
- Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad 38000, Pakistan; (A.R.); (S.A.)
| | - Sajid Asghar
- Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad 38000, Pakistan; (A.R.); (S.A.)
| | - Anita Kovács
- Institute of Pharmaceutical Technology and Regulatory Affairs, Faculty of Pharmacy, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary; (R.A.)
| | - Szilvia Berkó
- Institute of Pharmaceutical Technology and Regulatory Affairs, Faculty of Pharmacy, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary; (R.A.)
| | - Mária Budai-Szűcs
- Institute of Pharmaceutical Technology and Regulatory Affairs, Faculty of Pharmacy, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary; (R.A.)
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Charirak P, Prajantasan R, Premprayoon K, Srikacha N, Ratananikom K. In Vitro Antibacterial Activity and Mode of Action of Piper betle Extracts against Soft Rot Disease-Causing Bacteria. SCIENTIFICA 2023; 2023:5806841. [PMID: 37766936 PMCID: PMC10522424 DOI: 10.1155/2023/5806841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 08/06/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023]
Abstract
Soft rot disease affects a range of crops in the field and also during transit and storage, resulting in significant yield losses and negative economic impacts. This study evaluated the in vitro antibacterial activities and mode of action of Piper betle extracts against the soft rot disease-causing bacteria, Erwinia caratovora subsp. caratovora (ECC). Dried leaves of P. betle were extracted with water, ethanol, and hexane solvents and evaluated for their antibacterial activity. The results showed the highest antibacterial activity against ECC in the ethanol extract, followed by hexane and water extracts with minimum inhibitory concentration (MIC) 1.562, 6.25, and more than 12.50 mg/mL, respectively. The time-kill assay indicated a bactericidal mode of action. ECC growth was destroyed within 6 and 8 hours after treatment with the ethanol extract at 4-fold MIC and 2-fold MIC, respectively. The ethanol extract of P. betle showed promising activity against ECC, with the potential for further development as a novel alternative treatment to control phytobacteria.
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Affiliation(s)
- Punyisa Charirak
- Department of Plant Production Technology, Faculty of Agricultural Technology, Kalasin University, Kalasin, Thailand
| | - Rapeepun Prajantasan
- Department of Science and Mathematics, Faculty of Science and Health Technology, Kalasin University, Kalasin, Thailand
| | - Kantapon Premprayoon
- Department of Agricultural Machinery Engineering, Faculty of Engineering, Rajamangala University of Technology Isan, Khon Kaen Campus, Khon Kaen, Thailand
| | - Nikom Srikacha
- Department of Animal Science, Faculty of Natural Resources, Rajamangala University of Technology Isan, Sakon Nakhon Campus, Sakon Nakhon, Thailand
| | - Khakhanang Ratananikom
- Department of Science and Mathematics, Faculty of Science and Health Technology, Kalasin University, Kalasin, Thailand
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Candida albicans Reactive Oxygen Species (ROS)-Dependent Lethality and ROS-Independent Hyphal and Biofilm Inhibition by Eugenol and Citral. Microbiol Spectr 2022; 10:e0318322. [PMID: 36394350 PMCID: PMC9769929 DOI: 10.1128/spectrum.03183-22] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Candida albicans is part of the normal human flora but is most frequently isolated as the causative opportunistic pathogen of candidiasis. Plant-based essential oils and their components have been extensively studied as antimicrobials, but their antimicrobial impacts are poorly understood. Phenylpropenoids and monoterpenes, for example, eugenol from clove and citral from lemon grass, are potent antifungals against a wide range of pathogens. We report the cellular response of C. albicans to eugenol and citral, alone and combined, using biochemical and microscopic assays. The MICs of eugenol and citral were 1,000 and 256 μg/mL, respectively, with the two exhibiting additive effects based on a fractional inhibitory concentration index of 0.83 ± 0.14. High concentrations of eugenol caused membrane damage, oxidative stress, vacuole segregation, microtubule dysfunction and cell cycle arrest at the G1/S phase, and while citral had similar impacts, they were reactive oxygen species (ROS) independent. At sublethal concentrations (1/2 to 1/4 MIC), both oils disrupted microtubules and hyphal and biofilm formation in an ROS-independent manner. While both compounds disrupt the cell membrane, eugenol had a greater impact on membrane dysfunction. This study shows that eugenol and citral can induce vacuole and microtubule dysfunction, along with the inhibition of hyphal and biofilm formation. IMPORTANCE Candida albicans is a normal resident on and in the human body that can cause relatively benign infections. However, when our immune system is severely compromised (e.g., cancer chemotherapy patients) or underdeveloped (e.g., newborns), this fungus can become a deadly pathogen, infecting the bloodstream and organs. Since there are only a few effective antifungal agents that can be used to combat fungal infections, these fungi have been exposed to them over and over again, allowing the fungi to develop resistance. Instead of developing antifungal agents that kill the fungi, some of which have undesirable side effects on the human host, researchers have proposed to target the fungal traits that make the fungus more virulent. Here, we show how two components of plant-based essential oils, eugenol and citral, are effective inhibitors of C. albicans virulence traits.
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Jothi R, Sangavi R, Raja V, Kumar P, Pandian SK, Gowrishankar S. Alteration of Cell Membrane Permeability by Cetyltrimethylammonium Chloride Induces Cell Death in Clinically Important Candida Species. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 20:ijerph20010027. [PMID: 36612353 PMCID: PMC9819714 DOI: 10.3390/ijerph20010027] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/16/2022] [Accepted: 12/16/2022] [Indexed: 05/25/2023]
Abstract
The increased incidence of healthcare-related Candida infection has necessitated the use of effective disinfectants/antiseptics in healthcare settings as a preventive measure to decontaminate the hospital environment and stop the persistent colonization of the offending pathogens. Quanternary ammonium surfactants (QASs), with their promising antimicrobial efficacy, are considered as intriguing and appealing candidates for disinfectants. From this perspective, the present study investigated the antifungal efficacy and action mechanism of the QAS cetyltrimethylammonium chloride (CTAC) against three clinically important Candida species: C. albicans, C. tropicalis, and C. glabrata. CTAC exhibited phenomenal antifungal activity against all tested Candida spp., with minimum inhibitory concentrations (MIC) and minimum fungicidal concentrations (MFC) between 2 and 8 µg/mL. The time−kill kinetics of CTAC (at 2XMIC) demonstrated that an exposure time of 2 h was required to kill 99.9% of the inoculums in all tested strains. An important observation was that CTAC treatment did not influence intracellular reactive oxygen species (ROS), signifying that its phenomenal anticandidal efficacy was not mediated via oxidative stress. In addition, sorbitol supplementation increased CTAC’s MIC values against all tested Candida strains by three times (8−32 μg/mL), indicating that CTAC’s possible antifungal activity involves fungus cell membrane destruction. Interestingly, the increased fluorescence intensity of CTAC-treated cells in both propidium iodide (PI) and DAPI staining assays indicated the impairment of cell plasma membrane and nuclear membrane integrity by CTAC, respectively. Additionally, CTAC at MIC and 2XMIC was sufficient (>80%) to disrupt the mature biofilms of all tested spp., and it inhibited the yeast-to-hyphae transition at sub-MIC in C. albicans. Finally, the non-hemolytic activity of CTAC (upto 32 µg/mL) in human blood cells and HBECs signified its non-toxic nature at the investigated concentrations. Furthermore, thymol and citral, two phytocompounds, together with CTAC, showed synergistic fungicidal effectiveness against C. albicans planktonic cells. Altogether, the data of the present study appreciably broaden our understanding of the antifungal action mechanism of CTAC and support its future translation as a potential disinfectant against Candida-associated healthcare infections.
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Affiliation(s)
- Ravi Jothi
- Department of Biotechnology, Science Campus, Alagappa University, Karaikudi 630 003, Tamil Nadu, India
| | - Ravichellam Sangavi
- Department of Biotechnology, Science Campus, Alagappa University, Karaikudi 630 003, Tamil Nadu, India
| | - Veerapandian Raja
- Center of Emphasis in Infectious Diseases, Department of Molecular and Translational Medicine, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX 79905, USA
| | - Ponnuchamy Kumar
- Department of Animal Health and Management, Science Campus, Alagappa University, Karaikudi 630 003, Tamil Nadu, India
| | | | - Shanmugaraj Gowrishankar
- Department of Biotechnology, Science Campus, Alagappa University, Karaikudi 630 003, Tamil Nadu, India
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Mohamed HMA, Alnasser SM, Abd-Elhafeez HH, Alotaibi M, Batiha GES, Younis W. Detection of β-Lactamase Resistance and Biofilm Genes in Pseudomonas Species Isolated from Chickens. Microorganisms 2022; 10:microorganisms10101975. [PMID: 36296251 PMCID: PMC9611058 DOI: 10.3390/microorganisms10101975] [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: 08/12/2022] [Revised: 09/26/2022] [Accepted: 09/30/2022] [Indexed: 11/16/2022] Open
Abstract
Bacteria of the genus Pseudomonas are pathogens in both humans and animals. The most prevalent nosocomial pathogen is P. aeruginosa, particularly strains with elevated antibiotic resistance. In this study, a total of eighteen previously identified Pseudomonas species strains, were isolated from chicken. These strains were screened for biofilm formation and antibiotic resistance. In addition, we evaluated clove oil’s effectiveness against Pseudomonas isolates as an antibiofilm agent. The results showed that Pseudomonas species isolates were resistant to most antibiotics tested, particularly those from the β-lactamase family. A significant correlation (p < 0.05) between the development of multidrug-resistant isolates and biofilms is too informal. After amplifying the AmpC-plasmid-mediated genes (blaCMY, blaMIR, DHA, and FOX) and biofilm-related genes (psld, rhlA, and pelA) in most of our isolates, PCR confirmed this relationship. Clove oil has a potent antibiofilm effect against Pseudomonas isolates, and may provide a treatment for bacteria that form biofilms and are resistant to antimicrobials.
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Affiliation(s)
- Hams M. A. Mohamed
- Department of Microbiology, Faculty of Veterinary Medicine, South Valley University, Qena 83523, Egypt
- Correspondence: (H.M.A.M.); (S.M.A.); (H.H.A.-E.)
| | - Sulaiman Mohammed Alnasser
- Department of Pharmacology and Toxicology, Unaizah College of Pharmacy, Qassim University, Buraydah 52571, Saudi Arabia
- Correspondence: (H.M.A.M.); (S.M.A.); (H.H.A.-E.)
| | - Hanan H. Abd-Elhafeez
- Department of Cells and Tissues, Faculty of Veterinary Medicine, Assiut University, Assiut 71526, Egypt
- Correspondence: (H.M.A.M.); (S.M.A.); (H.H.A.-E.)
| | - Meshal Alotaibi
- Department of Pharmacy Practice, College of Pharmacy, University of Hafr Albatin, Hafr Albatin 39524, Saudi Arabia
| | - Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhur University, Damanhur 22511, Egypt
| | - Waleed Younis
- Department of Microbiology, Faculty of Veterinary Medicine, South Valley University, Qena 83523, Egypt
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Didehdar M, Chegini Z, Shariati A. Eugenol: A novel therapeutic agent for the inhibition of Candida species infection. Front Pharmacol 2022; 13:872127. [PMID: 36016558 PMCID: PMC9395595 DOI: 10.3389/fphar.2022.872127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 07/13/2022] [Indexed: 11/13/2022] Open
Abstract
The high occurrence and mortality rates related to candidiasis emphasize the urgent need to introduce new therapeutic approaches to treat this infection. Eugenol, the main phenolic component of Clove and Cinnamomum essential oil, has been used to inhibit growth and different virulence factors of Candida, including strains with decreased susceptibility to antifungals, particularly fluconazole. The results showed that this compound could bind to Candida membrane and decrease ergosterol biosynthesis, consequently leading to cell wall and membrane damage. Additionally, eugenol not only reduced germ tube formation, which reduces nutrient absorption from host tissues, but it also increased the levels of lipid peroxidation and reactive oxygen species, which induces oxidative stress and causes high permeability in the fungal cell membrane. Eugenol inhibited Candida cells’ adhesion capacity; additionally, this compound inhibited the formation of biofilms and eliminated established Candida biofilms on a variety of surfaces. Furthermore, by disrupting fungal cell integrity, eugenol could boost the entry of the antifungal drugs into the Candida cell, improving treatment efficacy. Therefore, eugenol could be used in the clinical management of various presentations of candidiasis, especially mucocutaneous presentations such as oral and vulvovaginal infections. However, further investigations, including in vivo and animal studies, toxicology studies and clinical trials, as well as molecular analysis, are needed to improve formulations and develop novel antifungal agents based on eugenol.
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Affiliation(s)
- Mojtaba Didehdar
- Department of Medical Parasitology and Mycology, Arak University of Medical Sciences, Arak, Iran
| | - Zahra Chegini
- Department of Microbiology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Aref Shariati
- Molecular and Medicine Research Center, Khomein University of Medical Sciences, Khomein, Iran
- Department of Medical Laboratory Sciences, Khomein University of Medical Sciences, Khomein, Iran
- *Correspondence: Aref Shariati,
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Shariati A, Didehdar M, Razavi S, Heidary M, Soroush F, Chegini Z. Natural Compounds: A Hopeful Promise as an Antibiofilm Agent Against Candida Species. Front Pharmacol 2022; 13:917787. [PMID: 35899117 PMCID: PMC9309813 DOI: 10.3389/fphar.2022.917787] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 05/30/2022] [Indexed: 11/13/2022] Open
Abstract
The biofilm communities of Candida are resistant to various antifungal treatments. The ability of Candida to form biofilms on abiotic and biotic surfaces is considered one of the most important virulence factors of these fungi. Extracellular DNA and exopolysaccharides can lower the antifungal penetration to the deeper layers of the biofilms, which is a serious concern supported by the emergence of azole-resistant isolates and Candida strains with decreased antifungal susceptibility. Since the biofilms’ resistance to common antifungal drugs has become more widespread in recent years, more investigations should be performed to develop novel, inexpensive, non-toxic, and effective treatment approaches for controlling biofilm-associated infections. Scientists have used various natural compounds for inhibiting and degrading Candida biofilms. Curcumin, cinnamaldehyde, eugenol, carvacrol, thymol, terpinen-4-ol, linalool, geraniol, cineole, saponin, camphor, borneol, camphene, carnosol, citronellol, coumarin, epigallocatechin gallate, eucalyptol, limonene, menthol, piperine, saponin, α-terpineol, β–pinene, and citral are the major natural compounds that have been used widely for the inhibition and destruction of Candida biofilms. These compounds suppress not only fungal adhesion and biofilm formation but also destroy mature biofilm communities of Candida. Additionally, these natural compounds interact with various cellular processes of Candida, such as ABC-transported mediated drug transport, cell cycle progression, mitochondrial activity, and ergosterol, chitin, and glucan biosynthesis. The use of various drug delivery platforms can enhance the antibiofilm efficacy of natural compounds. Therefore, these drug delivery platforms should be considered as potential candidates for coating catheters and other medical material surfaces. A future goal will be to develop natural compounds as antibiofilm agents that can be used to treat infections by multi-drug-resistant Candida biofilms. Since exact interactions of natural compounds and biofilm structures have not been elucidated, further in vitro toxicology and animal experiments are required. In this article, we have discussed various aspects of natural compound usage for inhibition and destruction of Candida biofilms, along with the methods and procedures that have been used for improving the efficacy of these compounds.
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Affiliation(s)
- Aref Shariati
- Molecular and Medicine Research Center, Khomein University of Medical Sciences, Khomein, Iran
- *Correspondence: Aref Shariati, ; Zahra Chegini,
| | - Mojtaba Didehdar
- Department of Medical Parasitology and Mycology, Arak University of Medical Sciences, Arak, Iran
| | - Shabnam Razavi
- Microbial Biotechnology Research Center, Iran University of Medical Sciences, Tehran, Iran
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mohsen Heidary
- Department of Laboratory Sciences, School of Paramedical Sciences, Sabzevar University of Medical Sciences, Sabzevar, Iran
- Cellular and Molecular Research Center, Sabzevar University of Medical Sciences, Sabzevar, Iran
| | - Fatemeh Soroush
- Molecular and Medicine Research Center, Khomein University of Medical Sciences, Khomein, Iran
- Student Research Committee, Khomein University of Medical Sciences, Khomein, Iran
| | - Zahra Chegini
- Department of Microbiology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
- *Correspondence: Aref Shariati, ; Zahra Chegini,
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Augostine CR, Avery SV. Discovery of Natural Products With Antifungal Potential Through Combinatorial Synergy. Front Microbiol 2022; 13:866840. [PMID: 35558105 PMCID: PMC9087349 DOI: 10.3389/fmicb.2022.866840] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 03/23/2022] [Indexed: 12/22/2022] Open
Abstract
The growing prevalence of antifungal drug resistance coupled with the slow development of new, acceptable drugs and fungicides has raised interest in natural products (NPs) for their therapeutic potential and level of acceptability. However, a number of well-studied NPs are considered promiscuous molecules. In this study, the advantages of drug-drug synergy were exploited for the discovery of pairwise NP combinations with potentiated antifungal activity and, potentially, increased target specificity. A rational approach informed by previously known mechanisms of action of selected NPs did not yield novel antifungal synergies. In contrast, a high-throughput screening approach with yeast revealed 34 potential synergies from 800 combinations of a diverse NP library with four selected NPs of interest (eugenol, EUG; β-escin, ESC; curcumin, CUR; berberine hydrochloride, BER). Dedicated assays validated the most promising synergies, namely, EUG + BER, CUR + sclareol, and BER + pterostilbene (PTE) [fractional inhibitory concentrations (FIC) indices ≤ 0.5 in all cases], reduced to as low as 35 (BER) and 7.9 mg L-1 (PTE). These three combinations synergistically inhibited a range of fungi, including human or crop pathogens Candida albicans, Aspergillus fumigatus, Zymoseptoria tritici, and Botrytis cinerea, with synergy also against azole-resistant isolates and biofilms. Further investigation indicated roles for mitochondrial membrane depolarization and reactive oxygen species (ROS) formation in the synergistic mechanism of EUG + BER action. This study establishes proof-of-principle for utilizing high-throughput screening of pairwise NP interactions as a tool to find novel antifungal synergies. Such NP synergies, with the potential also for improved specificity, may help in the management of fungal pathogens.
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Affiliation(s)
| | - Simon V. Avery
- School of Life Sciences, University of Nottingham, Nottingham, United Kingdom
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Jain S, Arora P, Nainwal LM. Essential oils as Potential Source of Anti-dandruff Agents: A Review. Comb Chem High Throughput Screen 2021; 25:1411-1426. [PMID: 34254910 DOI: 10.2174/1386207324666210712094148] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 05/14/2021] [Accepted: 05/21/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Dandruff is a frequently occurring scalp problem that causes significant discomfort to approximately 50% population at some stage of life, especially post-puberty and pre-adult age. OBJECTIVE This review aims to summarize the recent findings regarding the anti-fungal properties of herbal essential oils against pathogens involved in dandruff prognosis. METHODS A literature search of studies published between 2000 and 2020 was conducted over databases: PubMed, Google Scholar, Scopus, and Science direct. Literature was explored using the guidelines given in Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). RESULTS Dandruff, characterized by clinical symptoms of dryness, pruritis, scaly, and flaky scalp, is considered a pri-mary manifestation of seborrheic dermatitis. Amongst various etiological and pathophysiological factors, a significant role of yeasts, primarily species of Malassezia, Candida, has been strongly correlated with dandruff. At the same time, incidences of M. furfur, M. restricta, and M. globosa are high compared to others. Due to relapse of symptoms with the withdrawal of conventional anti-dandruff products. Essential oils of herbal origin, such as tea tree oil, lime oil, rose-mary oil, have gained global importance in dermatology. These oils are rich in secondary aromatic metabolites, espe-cially terpenes and phenolic components that impart substantial antimicrobial properties and resisting biofilm production. CONCLUSION Based on the available information, we can conclude that essential oils have tremendous potential to be developed as anti-dandruff products; however, further studies are warranted to establish their efficacy in dandruff cures.
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Affiliation(s)
- Shagun Jain
- Department of Pharmacognosy and Phytochemistry, School of Pharmaceutical Sciences, Delhi Pharmaceutical Sci-ences and Research University, New Delhi, India
| | - Poonam Arora
- Department of Pharmacognosy and Phytochemistry, School of Pharmaceutical Sciences, Delhi Pharmaceutical Sci-ences and Research University, New Delhi, India
| | - Lalit Mohan Nainwal
- Department of Pharmaceutical Chemistry, HIMT College of Pharmacy, Harlal Institute of Management and Technol-ogy, Greater Noida, U.P, India
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Khan F, Bamunuarachchi NI, Pham DTN, Tabassum N, Khan MSA, Kim YM. Mixed biofilms of pathogenic Candida-bacteria: regulation mechanisms and treatment strategies. Crit Rev Microbiol 2021; 47:699-727. [PMID: 34003065 DOI: 10.1080/1040841x.2021.1921696] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Mixed-species biofilm is one of the most frequently recorded clinical problems. Mixed biofilms develop as a result of interactions between microorganisms of a single or multiple species (e.g. bacteria and fungi). Candida spp., particularly Candida albicans, are known to associate with various bacterial species to form a multi-species biofilm. Mixed biofilms of Candida spp. have been previously detected in vivo and on the surfaces of many biomedical instruments. Treating infectious diseases caused by mixed biofilms of Candida and bacterial species has been challenging due to their increased resistance to antimicrobial drugs. Here, we review and discuss the clinical significance of mixed Candida-bacteria biofilms as well as the signalling mechanisms involved in Candida-bacteria interactions. We also describe possible approaches for combating infections associated with mixed biofilms, such as the use of natural or synthetic drugs and combination therapy. The review presented here is expected to contribute to the advances in the biomedical field on the understanding of underlying interaction mechanisms of pathogens in mixed biofilm, and alternative approaches to treating the related infections.
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Affiliation(s)
- Fazlurrahman Khan
- Research Center for Marine Integrated Bionics Technology, Pukyong National University, Busan, South Korea
| | - Nilushi Indika Bamunuarachchi
- Department of Food Science and Technology, Pukyong National University, Busan, South Korea.,Department of Fisheries and Marine Sciences, Ocean University of Sri Lanka, Tangalle, Sri Lanka
| | - Dung Thuy Nguyen Pham
- Center of Excellence for Biochemistry and Natural Products, Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam.,NTT Hi-Tech Institute, Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam
| | - Nazia Tabassum
- Industrial Convergence Bionix Engineering, Pukyong National University, Busan, South Korea
| | - Mohd Sajjad Ahmad Khan
- Department of Basic Sciences, Deanship of Preparatory Year and Supporting Studies, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Young-Mog Kim
- Research Center for Marine Integrated Bionics Technology, Pukyong National University, Busan, South Korea.,Department of Food Science and Technology, Pukyong National University, Busan, South Korea
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12
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Bachtiar BM, Gani BA, Deviana A, Utami NR, Andriyani AD, Bachtiar EW. The Discrepancy between Clove and Non-Clove Cigarette Smoke-Promoted Candida albicans Biofilm Formation with Precoating RNA-aptamer. F1000Res 2021; 10:372. [PMID: 34367616 PMCID: PMC8311812 DOI: 10.12688/f1000research.52266.3] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/23/2021] [Indexed: 11/20/2022] Open
Abstract
This study explores the influence of precoating aptamer (Ca-apt1) on
C. albicans viability while the fungus was growing in the presence of exposing condensed cigarette smoke (CSC), prepared from clove (CCSC) and non-clove (NCSC) cigarettes, for 48 h. Using qPCR, we found that mRNA expression of adhesion-associated genes (
ALS3 and HWP1) was impaired by precoating
C. albicans yeast cells with the aptamer. Conversely, the gene transcription was upregulated when aptamer-uncoated yeast was pre-treated with either CSC. In addition, by analysing the result of MTT ([3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide] assay, we found that the presence of added CCSC or NCSC in growth medium for 48 h was significantly enhanced
C. albicans biofilm development. However, the presence of precoated aptamer was significantly impaired biofilm development accelerated by the NCSC. The inhibitory effect of the Ca-apt1 was not dependent on the precoated aptamer (1ng/μL and 10 ng/μL). Interestingly, we noted that the enhancer effect of treated CCSC was no longer effective when the yeast had been precoated with 10 ng/μL aptamer tested. Additionally, light microscopy analysis revealed that precoating aptamer alleviates morphological changes of
C. albicans (from yeast to hypha formation) that are enhanced by adding CCSC or NCSC in the growth medium. In conclusion, these results suggest that administration on Ca-ap1 exhibits a significant protective effect on CSC-induced biofilm formation by
C. albicans.
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Affiliation(s)
- Boy Muchlis Bachtiar
- Department of Oral Biology, Faculty of Dentistry Universitas Indonesia, Jakarta, DKI, 10430, Indonesia
| | - Basri A Gani
- Oral Biology Department, Faculty of Dentistry Universitas Syah Kuala, Banda Aceh, Nagroe Aceh, 23111, Indonesia
| | - Astri Deviana
- Oral Biology Laboratory, Faculty of Dentistry Universitas Indonesia, Jakarta, Indonesia, 10430, Indonesia
| | - Nastiti Rilo Utami
- Oral Biology Laboratory, Faculty of Dentistry Universitas Indonesia, Jakarta, Indonesia, 10430, Indonesia
| | - Anissa Dien Andriyani
- Oral Biology Laboratory, Faculty of Dentistry Universitas Indonesia, Jakarta, Indonesia, 10430, Indonesia
| | - Endang Winiati Bachtiar
- Department of Oral Biology, Faculty of Dentistry Universitas Indonesia, Jakarta, DKI, 10430, Indonesia
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13
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Tran HNH, Graham L, Adukwu EC. In vitro antifungal activity of Cinnamomum zeylanicum bark and leaf essential oils against Candida albicans and Candida auris. Appl Microbiol Biotechnol 2020; 104:8911-8924. [PMID: 32880694 PMCID: PMC7502450 DOI: 10.1007/s00253-020-10829-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 07/16/2020] [Accepted: 08/11/2020] [Indexed: 12/01/2022]
Abstract
Candida infections are a significant source of patient morbidity and mortality. Candida albicans is the most common pathogen causing Candida infections. Candida auris is a newly described pathogen that is associated with multi-drug-resistant candidiasis and candidaemia in humans. The antifungal effects of various essential oils and plant compounds have been demonstrated against human pathogenic fungi. In this study, the effect of cinnamon leaf and bark essential oils (CEOs) was determined against both C. albicans and C. auris. The disc diffusion (direct and vapour) and broth microdilution method was used to determine antifungal activity of the EOs against selected strains (C. albicans ATCC 10231, C. albicans ATCC 2091 and C. auris NCPF 8971) whilst the mode of action and haemolysin activity of the CEOs were determined using electron microscopy and light microscopy. Direct and vapour diffusion assays showed greater inhibitory activity of bark CEO in comparison with leaf CEO. The minimum inhibitory concentrations (MICs) and minimum fungicidal concentrations (MFCs) of bark CEO for all tested strains was below 0.03% (v/v), which was lower than the MICs of the leaf CEO (0.06–0.13%, v/v) dependent on the strain and the MFCs at 0.25% (v/v). In the morphological interference assays, damage to the cell membrane was observed and both CEOs inhibited hyphae formation. The haemolysin production assay showed that CEOs can reduce the haemolytic activity in the tested C. albicans and C. auris strains. At low concentrations, CEOs have potent antifungal and antihaemolytic activities in vitro against C. albicans and C. auris. Key points • Essential oils from Cinnamomum zeylanicum Blume bark and leaf (CBEO and CLEO) demonstrated fungicidal properties at very low concentrations. • The antifungal activity of CBEO was greater than that of CLEO consistent with other recent published literature. • The mode of action of CBEO and CLEO was damage to the membrane of C. albicans and C. auris. • Both CBEO and CLEO inhibited the formation of hyphae and reduced haemolysin production in C. albicans and C. auris. ![]()
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Affiliation(s)
- Hoang N H Tran
- Faculty of Life Sciences, School of Physiology, Pharmacology and Neuroscience, University of Bristol, Bristol, BS8 1TH, UK
| | - Lee Graham
- Centre for Research in Biosciences, University of the West of England, Coldharbour Lane, Bristol, BS16 1QY, UK
| | - Emmanuel C Adukwu
- Centre for Research in Biosciences, University of the West of England, Coldharbour Lane, Bristol, BS16 1QY, UK.
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14
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Lone SA, Ahmad A. Inhibitory effect of novel Eugenol Tosylate Congeners on pathogenicity of Candida albicans. BMC Complement Med Ther 2020; 20:131. [PMID: 32349730 PMCID: PMC7191809 DOI: 10.1186/s12906-020-02929-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 04/16/2020] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND The global prevalence of fungal diseases is increasing rapidly, which affects more than a billion people every year with significant mortality rate. On the other hand, the development of new drugs to treat these fungal infections is slow, while the current antifungal therapy is insufficient and associated with adverse side effects and emerging multidrug resistance. Therefore, development of novel antifungal drugs with least or no toxicity and multi-target mechanisms of action is an immediate priority. Natural products have long been known to possess antimicrobial activities and are source of new drugs. Currently, modifying natural products to synthesize derivatives/analogues are of great scientific focus for discovering novel drugs with improved potency and safety. Modifications in eugenol to synthesize eugenol derivatives with enhanced antifungal activity have already been reported. METHODS In this study, three most active novel eugenol tosylate congeners (ETC-5, ETC-6 and ETC-7) were selected from our previous study to investigate their effect on major virulence factors of Candida albicans which include adherence, morphogenesis, hydrolytic enzymes secretion, biofilm formation and on expression of genes related to these virulence factors. Adherence and biofilm formation were studied by alamarBlue dye and XTT reduction assays respectively, hydrolytic enzyme secretion was evaluated by plate assays. Further, morphological transition was monitored microscopically and RT-qPCR was used to assess the gene expression levels. RESULTS ETCs significantly inhibited adherence in C. albicans with an inhibition range of 16-66%, and completely inhibited the morphogenesis at MIC values. Inhibition of proteinase and phospholipase activity was in the range of 2-48% and 8-34% respectively. Test compounds also significantly inhibit biofilm formation in C. albicans in the range of 7-77%. Furthermore, RT-qPCR results indicated a significant down regulation in expression levels of genes (ALS1, ALS2, ALS3, ALS9, CPH1, HWP1, SAP1, SAP2, SAP3 and PLB1) in C. albicans cells after treated with ETCs. CONCLUSION The results indicated that these novel ETCs target major virulence factors of C. albicans and avert this commensal microbe to turn into pathogenic. However, further in-depth studies may facilitate the mechanisms involved by ETCs in targeting these virulence factors.
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Affiliation(s)
- Shabir Ahmad Lone
- Clinical Microbiology and Infectious Diseases, School of Pathology, Health Sciences, University of the Witwatersrand, Johannesburg, 2193, South Africa
| | - Aijaz Ahmad
- Clinical Microbiology and Infectious Diseases, School of Pathology, Health Sciences, University of the Witwatersrand, Johannesburg, 2193, South Africa. .,Infection Control, Charlotte Maxeke Johannesburg Academic Hospital, National Health Laboratory Service, Johannesburg, 2193, South Africa.
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15
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Xie C, Guo H, Zhao W, Zhang L. Environmentally Friendly Marine Antifouling Coating Based on a Synergistic Strategy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:2396-2402. [PMID: 32036655 DOI: 10.1021/acs.langmuir.9b03764] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The development of environmentally friendly and long-term marine antifouling coating remains a huge challenge in the maritime industry. For this purpose, we developed a novel and efficient antifouling coating based on a synergistic strategy, incorporating contact inhibition, fouling repelling, and antifouling properties. Results demonstrated that the coating could efficiently resist the adhesion of protein, bacteria, and Navicula diatoms. More importantly, marine field tests showed the coating could efficiently inhibit biofouling for at least 8 months. This approach paves a new way for the development of environmentally friendly and long-term antifouling coating.
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Affiliation(s)
- Changhai Xie
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Center for Synthetic Biology, Tianjin University, Tianjin 300350, P. R. China
- Key Laboratory of Systems Bioengineering (MOE), Tianjin University, Tianjin 300350, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300350, P. R. China
- Qingdao Institute for Marine Technology, Tianjin University, Qingdao 266235, P. R. China
| | - Hongshuang Guo
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Center for Synthetic Biology, Tianjin University, Tianjin 300350, P. R. China
- Key Laboratory of Systems Bioengineering (MOE), Tianjin University, Tianjin 300350, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300350, P. R. China
- Qingdao Institute for Marine Technology, Tianjin University, Qingdao 266235, P. R. China
| | - Weiqiang Zhao
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Center for Synthetic Biology, Tianjin University, Tianjin 300350, P. R. China
- Key Laboratory of Systems Bioengineering (MOE), Tianjin University, Tianjin 300350, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300350, P. R. China
- Qingdao Institute for Marine Technology, Tianjin University, Qingdao 266235, P. R. China
| | - Lei Zhang
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Center for Synthetic Biology, Tianjin University, Tianjin 300350, P. R. China
- Key Laboratory of Systems Bioengineering (MOE), Tianjin University, Tianjin 300350, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300350, P. R. China
- Qingdao Institute for Marine Technology, Tianjin University, Qingdao 266235, P. R. China
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16
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Gomes CRB, de Souza MVN, Facchinetti V. A Review on Onychine and its Analogs: Synthesis and Biological Activity. Curr Org Synth 2020; 17:3-22. [PMID: 32103713 DOI: 10.2174/1570179417666191218112842] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 11/07/2019] [Accepted: 12/18/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Onychine is a 4-azafluorenone alkaloid isolated from the Annonaceae family, in low concentrations. Onychine and its analogs exhibit a wide range of pharmacological activities such as antifungal, antibacterial, anticancer, and antimalarial. Because of the high bioactivity of some 4-azafluorenone derivatives, several synthetic methods have been developed for their procurement. OBJECTIVE Considering the importance of these alkaloids, we aim to present the main synthetic approaches to onychines and its derivatives and the biological activity of some 4-azafluorenones. METHODS The most prominent methodologies for the synthesis of onychines were reviewed. RESULTS In this work, we cover many synthetic approaches for the synthesis of onychine and 4-azafluorenone derivatives including intramolecular cyclizations, multicomponent reactions, microwave-assisted multicomponent reactions, Diels-alder reactions, among others. Moreover, we also review the biological activity of 4-azafluorenones. CONCLUSION 4-azafluorenones have risen as prominent structures in medicinal chemistry; however, most of the time, access to new derivatives involves toxic catalysts, harsh reaction conditions, and long-step procedures. Therefore, the development of new synthetic routes with more operational simplicity, simple purification procedure, good yields, and low environmental impact, is desirable.
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Affiliation(s)
- Claudia R B Gomes
- Fundacao Oswaldo Cruz, Instituto de Tecnologia em Farmacos - Farmanguinhos. Rua Sizenando Nabuco 100, Manguinhos, 21041- 250, RJ, Brazil
| | - Marcus V N de Souza
- Fundacao Oswaldo Cruz, Instituto de Tecnologia em Farmacos - Farmanguinhos. Rua Sizenando Nabuco 100, Manguinhos, 21041- 250, RJ, Brazil
| | - Victor Facchinetti
- Fundacao Oswaldo Cruz, Instituto de Tecnologia em Farmacos - Farmanguinhos. Rua Sizenando Nabuco 100, Manguinhos, 21041- 250, RJ, Brazil
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17
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da Silva BC, Melo DR, Franco CT, Maturano R, Fabri RL, Daemon E. Evaluation of Eugenol and (E)-Cinnamaldehyde Insecticidal Activity Against Larvae and Pupae of Musca domestica (Diptera: Muscidae). JOURNAL OF MEDICAL ENTOMOLOGY 2020; 57:181-186. [PMID: 31332448 DOI: 10.1093/jme/tjz121] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Indexed: 06/10/2023]
Abstract
Musca domestica L., 1758, is an important mechanical vector of several pathogens for humans and livestock, making it essential to study new alternatives of more efficient and safer control for this dipteran. This study evaluated the toxicity of the phenylpropanoids eugenol and (E)-cinnamaldehyde on its life stages. A contact test with 10 repetitions (n = 10) was performed for each substance concentration on each post-embryonic immature life stage. Both substances presented insecticidal activity on the immature life stages of the dipteran, and secondary effects on development caused by sublethal concentrations. Larvicidal activity was shown from the 1.25 mg/ml concentration by eugenol and from 2.5 mg/ml by (E)-cinnamaldehyde, and both substances had a 100% larval treatment efficacy (LTE) from the 5mg/ml concentration. For pupal treatment, (E)-cinnamaldehyde differed from the control from the 10 mg/ml concentration (P < 0.05), and both phenylpropanoids caused malformation in adults from 10 mg/ml. The highest pupal treatment efficacy (PTE) was obtained from the 30 mg/ml concentration, 67.2% for (E)-cinnamaldehyde, and 32% for eugenol. The products tested in this study showed high larvicidal potential, and both presented pupicidal effects and caused malformation in adults from treated pupae.
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Affiliation(s)
- Bianca Carvalho da Silva
- Programa de Pós-Graduação em Ciências Biológicas - Comportamento e Biologia Animal, Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brasil
| | - Diego Rodrigues Melo
- Programa de Pós-Graduação em Biologia Animal, Universidade Federal Rural do Rio de Janeiro, Seropédica, Rio de Janeiro, Brasil
| | - Cristiane Teixeira Franco
- Programa de Pós-Graduação em Ciências Biológicas - Comportamento e Biologia Animal, Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brasil
| | - Ralph Maturano
- Programa de Pós-Graduação em Ciências Biológicas - Comportamento e Biologia Animal, Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brasil
- Departamento de Zoologia, Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brasil
| | - Rodrigo Luiz Fabri
- Laboratório de Produtos Naturais Bioativos, Departamento de Bioquímica, Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brasil
| | - Erik Daemon
- Departamento de Zoologia, Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brasil
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18
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Lee JH, Kim YG, Khadke SK, Yamano A, Watanabe A, Lee J. Inhibition of Biofilm Formation by Candida albicans and Polymicrobial Microorganisms by Nepodin via Hyphal-Growth Suppression. ACS Infect Dis 2019; 5:1177-1187. [PMID: 31055910 DOI: 10.1021/acsinfecdis.9b00033] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Candida albicans is an opportunistic pathogenic yeast and is responsible for candidiasis. It readily colonizes host tissues and implant devices, and forms biofilms, which play an important role in pathogenesis and drug resistance. In this study, the antibiofilm, antihyphal, and antivirulence activities of nepodin, isolated from Rumex japonicus roots, were investigated against a fluconazole-resistant C. albicans strain and against polymicrobial-microorganism-biofilm formation. Nepodin effectively inhibited C. albicans biofilm formation without affecting its planktonic cell growth. Also, Rumex-root extract and nepodin both inhibited hyphal growth and cell aggregation of C. albicans. Interestingly, nepodin also showed antibiofilm activities against Candida glabrata, Candida parapsilosis, Staphylococcus aureus, and Acinetobacter baumannii strains and against dual biofilms of C. albicans and S. aureus or A. baumannii but not against Pseudomonas aeruginosa. Transcriptomic analysis performed by RNA-seq and qRT-PCR showed nepodin repressed the expression of several hypha- and biofilm-related genes (ECE1, HGT10, HWP1, and UME6) and increased the expression of several transport genes (CDR4, CDR11, and TPO2), which supported phenotypic changes. Moreover, nepodin reduced C. albicans virulence in a nematode-infection model and exhibited minimal cytotoxicity against the nematode and an animal cell line. These results demonstrate that nepodin and Rumex-root extract might be useful for controlling C. albicans infections and multispecies biofilms.
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Affiliation(s)
- Jin-Hyung Lee
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Republic of Korea
| | - Yong-Guy Kim
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Republic of Korea
| | - Sagar Kiran Khadke
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Republic of Korea
| | - Aki Yamano
- Okinawa Research Center Company, Ltd., 12-75 Ulumasi, Okinawa 904-2234, Japan
| | - Akio Watanabe
- Research Institute for Biological Functions, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi 487-8501, Japan
| | - Jintae Lee
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Republic of Korea
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19
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Naz F, Anis H, Hasan Z, Islam A, Khan LA. Exploration of Fungal Lipase as Direct Target of Eugenol through Spectroscopic Techniques. Protein Pept Lett 2019; 26:919-929. [PMID: 31057096 DOI: 10.2174/0929866526666190506113455] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 03/13/2019] [Accepted: 04/19/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Fungal lipase dependent processes are important for their pathogenicity. Lipases can therefore be explored as direct target of promising herbal antifungals. OBJECTIVE We explored Aspergillus niger lipase as a direct target of eugenol through spectroscopic techniques and compare results with Bovine Serum Albumin and lysozyme to comment on selectivity of eugenol towards lipase. METHODS In vitro activity assays of lipase are used to determine concentration ranges. UV-Visible, Fluorescence and Circular dichroism spectroscopy were employed to determine binding constant, stoichiometric binding sites and structural changes in Lipase, BSA and lysozyme following incubation with varying concentrations of eugenol. RESULTS In activity assays 50% inhibition of lipase was obtained at 0.913 mmoles/litre eugenol. UV-vis spectroscopy shows formation of lipase-eugenol, Bovine Serum Albumin-eugenol and lysozyme-eugenol complex well below this concentration of eugenol. Eugenol binding caused blue shift with Bovine Serum Albumin and lysozyme suggestive of compaction, and red shift with lipase. Negative ellipticity decreased with lipase but increased with Bovine Serum Albumineugenol and lysozyme-eugenol complexes suggesting loss of helical structure for lipase and compaction for Bovine Serum Albumin and lysozyme. Binding of eugenol to lipase was strong (Ka= 4.7 x 106 M-1) as compared to Bovine Serum Albumin and lysozyme. The number of stoichiometric eugenol binding sites on lipase was found to be 2 as compared to 1.37 (Bovine Serum Albumin) and 0.32 (lysozyme). Docking results also suggest strong binding of eugenol with lipase followed by Bovine Serum Albumin and lysozyme. CONCLUSION Eugenol is found to be effective inhibitor and disruptor of secondary and tertiary structure of lipase, whereas its binding to Bovine Serum Albumin and lysozyme is found to be weak and less disruptive of structures suggesting selectivity of eugenol towards lipase.
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Affiliation(s)
- Farheen Naz
- Department of Biosciences, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi 110025, India
| | - Haider Anis
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | - Ziaul Hasan
- Department of Biosciences, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi 110025, India
| | - Asimul Islam
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | - Luqman A Khan
- Department of Biosciences, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi 110025, India
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20
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Singla RK, Dubey AK. Molecules and Metabolites from Natural Products as Inhibitors of Biofilm in Candida spp. pathogens. Curr Top Med Chem 2019; 19:2567-2578. [PMID: 31654510 PMCID: PMC7403689 DOI: 10.2174/1568026619666191025154834] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 09/26/2019] [Accepted: 09/29/2019] [Indexed: 11/29/2022]
Abstract
BACKGROUND Biofilm is a critical virulence factor associated with the strains of Candida spp. pathogens as it confers significant resistance to the pathogen against antifungal drugs. METHODS A systematic review of the literature was undertaken by focusing on natural products, which have been reported to inhibit biofilms produced by Candida spp. The databases explored were from PubMed and Google Scholar. The abstracts and full text of the manuscripts from the literature were analyzed and included if found significant. RESULTS Medicinal plants from the order Lamiales, Apiales, Asterales, Myrtales, Sapindales, Acorales, Poales and Laurales were reported to inhibit the biofilms formed by Candida spp. From the microbiological sources, lactobacilli, Streptomyces chrestomyceticus and Streptococcus thermophilus B had shown the strong biofilm inhibition potential. Further, the diverse nature of the compounds from classes like terpenoids, phenylpropanoid, alkaloids, flavonoids, polyphenol, naphthoquinone and saponin was found to be significant in inhibiting the biofilm of Candida spp. CONCLUSION Natural products from both plant and microbial origins have proven themselves as a goldmine for isolating the potential biofilm inhibitors with a specific or multi-locus mechanism of action. Structural and functional characterization of the bioactive molecules from active extracts should be the next line of approach along with the thorough exploration of the mechanism of action for the already identified bioactive molecules.
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Affiliation(s)
| | - Ashok K. Dubey
- Address correspondence to this author at the Drug Discovery Laboratory, Department of Biological Sciences and Engineering, Netaji Subhas University of Technology, New Delhi-110078, India; Emails: ;
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21
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Ma N, Liu XW, Kong XJ, Li SH, Jiao ZH, Qin Z, Yang YJ, Li JY. Aspirin eugenol ester regulates cecal contents metabolomic profile and microbiota in an animal model of hyperlipidemia. BMC Vet Res 2018; 14:405. [PMID: 30563510 PMCID: PMC6299661 DOI: 10.1186/s12917-018-1711-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 11/23/2018] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Hyperlipidemia, with an increasing of prevalence, has become one of the common metabolic diseases in companion animal clinic. Aspirin eugenol ester (AEE) is a novel compound that exhibits efficacious anti-hyperlipidemia activities. However, its mechanisms are still not completely known. The objective of present study was to investigate the intervention effects of AEE on cecal contents metabonomics profile and microbiota in hyperlipidemia rats. RESULTS Three groups of rats were fed with a control diet, or high fat diet (HFD) containing or not AEE. The results showed the beneficial effects of AEE in HFD-fed rats such as the reducing of aspartate aminotransferase (AST) and total cholesterol (TCH). Distinct changes in metabonomics profile of cecal contents were observed among control, model and AEE groups. HFD-induced alterations of eight metabolites in cecal contents mainly related with purine metabolism, linoleic acid metabolism, glycerophospholipid metabolism, sphingolipid metabolism and pyrimidine metabolism were reversed by AEE treatment. Principal coordinate analysis (PCoA) and cluster analysis of microbiota showed altered patterns with distinct differences in AEE group versus model group, indicating that AEE treatment improved the negative effects caused by HFD on cecal microbiota. In addition, the correction analysis revealed the possible link between the identified metabolites and cecal microbiota. CONCLUSIONS This study showed regulation effects of AEE on cecal contents metabonomics profile and microbiota, which could provide information to reveal the possible underlying mechanism of AEE on hyperlipidemia treatment.
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Affiliation(s)
- Ning Ma
- Key Lab of New Animal Drug Project of Gansu Province; Key Lab of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Science of Chinese Academy of Agricultural Sciences, No.335, Jiangouyan, Qilihe district, Lanzhou, 730050, China.,College of Veterinary Medicine, Agricultural University of Hebei, Baoding, Hebei, 071000, China
| | - Xi-Wang Liu
- Key Lab of New Animal Drug Project of Gansu Province; Key Lab of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Science of Chinese Academy of Agricultural Sciences, No.335, Jiangouyan, Qilihe district, Lanzhou, 730050, China
| | - Xiao-Jun Kong
- Key Lab of New Animal Drug Project of Gansu Province; Key Lab of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Science of Chinese Academy of Agricultural Sciences, No.335, Jiangouyan, Qilihe district, Lanzhou, 730050, China
| | - Shi-Hong Li
- Key Lab of New Animal Drug Project of Gansu Province; Key Lab of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Science of Chinese Academy of Agricultural Sciences, No.335, Jiangouyan, Qilihe district, Lanzhou, 730050, China
| | - Zeng-Hua Jiao
- Key Lab of New Animal Drug Project of Gansu Province; Key Lab of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Science of Chinese Academy of Agricultural Sciences, No.335, Jiangouyan, Qilihe district, Lanzhou, 730050, China
| | - Zhe Qin
- Key Lab of New Animal Drug Project of Gansu Province; Key Lab of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Science of Chinese Academy of Agricultural Sciences, No.335, Jiangouyan, Qilihe district, Lanzhou, 730050, China
| | - Ya-Jun Yang
- Key Lab of New Animal Drug Project of Gansu Province; Key Lab of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Science of Chinese Academy of Agricultural Sciences, No.335, Jiangouyan, Qilihe district, Lanzhou, 730050, China.
| | - Jian-Yong Li
- Key Lab of New Animal Drug Project of Gansu Province; Key Lab of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Science of Chinese Academy of Agricultural Sciences, No.335, Jiangouyan, Qilihe district, Lanzhou, 730050, China.
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Chaturvedi V, Bouchara JP, Hagen F, Alastruey-Izquierdo A, Badali H, Bocca AL, Cano-Lira JF, Cao C, Chaturvedi S, Chotirmall SH, van Diepeningen AD, Gangneux JP, Guinea J, de Hoog S, Ilkit M, Kano R, Liu W, Martinez-Rossi NM, de Souza Carvalho Melhem M, Ono MA, Ran Y, Ranque S, de Almeida Soares CM, Sugita T, Thomas PA, Vecchiarelli A, Wengenack NL, Woo PCY, Xu J, Zancope-Oliveira RM. Eighty Years of Mycopathologia: A Retrospective Analysis of Progress Made in Understanding Human and Animal Fungal Pathogens. Mycopathologia 2018; 183:859-877. [PMID: 30506286 DOI: 10.1007/s11046-018-0306-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 11/09/2018] [Indexed: 11/30/2022]
Abstract
Mycopathologia was founded in 1938 to 'diffuse the understanding of fungal diseases in man and animals among mycologists.' This was an important mission considering that pathogenic fungi for humans and animals represent a tiny minority of the estimated 1.5-5 million fungal inhabitants on Earth. These pathogens have diverged from the usual saprotrophic lifestyles of most fungi to colonize and infect humans and animals. Medical and veterinary mycology is the subdiscipline of microbiology that dwells into the mysteries of parasitic, fungal lifestyles. Among the oldest continuing scientific publications on the subject, Mycopathologia had its share of 'classic papers' since the first issue was published in 1938. An analysis of the eight decades of notable contributions reveals many facets of host-pathogen interactions among 183 volumes comprising about 6885 articles. We have analyzed the impact and relevance of this body of work using a combination of citation tools (Google Scholar and Scopus) since no single citation metric gives an inclusive perspective. Among the highly cited Mycopathologia publications, those on experimental mycology accounted for the major part of the articles (36%), followed by diagnostic mycology (16%), ecology and epidemiology (15%), clinical mycology (14%), taxonomy and classification (10%), and veterinary mycology (9%). The first classic publication, collecting nearly 200 citations, appeared in 1957, while two articles published in 2010 received nearly 150 citations each, which is notable for a journal covering a highly specialized field of study. An empirical analysis of the publication trends suggests continuing interests in novel diagnostics, fungal pathogenesis, review of clinical diseases especially with relevance to the laboratory scientists, taxonomy and classification of fungal pathogens, fungal infections and carriage in pets and wildlife, and changing ecology and epidemiology of fungal diseases around the globe. We anticipate that emerging and re-emerging fungal pathogens will continue to cause significant health burden in the coming decades. It remains vital that scientists and physicians continue to collaborate by learning each other's language for the study of fungal diseases, and Mycopathologia will strive to be their partner in this increasingly important endeavor to its 100th anniversary in 2038 and beyond.
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Affiliation(s)
- Vishnu Chaturvedi
- New York State Department of Health and University at Albany, Albany, NY, USA.
| | | | - Ferry Hagen
- Westerdijk Fungal Biodiversity Institute, Utrecht, The Netherlands
| | | | - Hamid Badali
- Mazandaran University of Medical Sciences, Sari, Iran
| | | | | | - Cunwei Cao
- Guangxi Medical University, Nanning, China
| | - Sudha Chaturvedi
- New York State Department of Health and University at Albany, Albany, NY, USA
| | | | | | | | | | - Sybren de Hoog
- Westerdijk Fungal Biodiversity Institute, Utrecht, The Netherlands
| | | | - Rui Kano
- Nihon University College of Bioresource Sciences, Fujisawa, Japan
| | - Weida Liu
- Peking Union Medical College, Nanjing, China
| | | | | | | | | | | | | | | | - Philip A Thomas
- Institute of Ophthalmology, Joseph Eye Hospital, Tiruchirappalli, India
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Silva TC, Zara ALDSA, Sá FADS, Bara MTF, de Ávila RI, Costa CR, Valadares MC, dos Santos AS, Freitas VAQ, Silva MDRR. Antifungal potential of punicalagin against Cryptococcus neoformans species complex. Rev Inst Med Trop Sao Paulo 2018; 60:e60. [PMID: 30365643 PMCID: PMC6199124 DOI: 10.1590/s1678-9946201860060] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 08/20/2018] [Indexed: 01/28/2023] Open
Abstract
This study evaluated the antifungal activity and cytotoxicity profile of the ellagitannin punicalagin, a compound extracted from the L. pacari A. St.-Hil (Lythraceae) leaf, against Cryptococcus neoformans species complex. Minimum inhibitory concentrations (MIC) were checked using the broth microdilution method. Minimum fungicidal concentrations (MFC) and time of death were used to confirm the antifungal activity of the compound. The in vitro cytotoxicity of punicalagin was tested in BALB/c3T3 fibroblasts and A549 human lung cancer cell line, while the hemolytic potential was tested on sheep erythrocytes. The morphological changes induced in yeast strains by the presence of punicalagin were also analyzed. Tested on eight isolates of the C. neoformans complex punicalagin showed MIC of 0.5 to 4.0 μg/mL and MFC> 256 μg/mL. Punicalagin also demonstrated a good growth inhibitory activity in time-kill curves, but it was not able to achieve a statistically significant reduction of fungal growth suggesting a fungistatic effect of the compound. In vitro cytotoxicity studies using the two cell lines showed that punicalagin has low activity on these cells and no activity on sheep erythrocytes. Morphological changes were seen in the yeasts strains studied when treated with punicalagin. Therefore, punicalagin is a potential antifungal for important pathogenic yeasts and presents a low cytotoxicity profile associated with no hemolytic effects.
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Affiliation(s)
- Thaísa Cristina Silva
- Universidade Federal de Goiás, Instituto de Patologia Tropical e Saúde Pública, Goiânia, Goiás, Brazil
| | | | | | | | | | - Carolina Rodrigues Costa
- Universidade Federal de Goiás, Instituto de Patologia Tropical e Saúde Pública, Goiânia, Goiás, Brazil
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24
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Ahmad N, Alam MA, Ahmad FJ, Sarafroz M, Ansari K, Sharma S, Amir M. Ultrasonication techniques used for the preparation of novel Eugenol-Nanoemulsion in the treatment of wounds healings and anti-inflammatory. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2018.06.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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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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Halbandge SD, Mortale SP, Karuppayil SM. Biofabricated Silver Nanoparticles Synergistically Activate Amphotericin B Against Mature Biofilm Forms of Candida Albicans. ACTA ACUST UNITED AC 2017. [DOI: 10.2174/1875933501704010001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Background:
Biofilm formation by Candida albicans is a significant clinical challenge. Fungal biofilms are resistant to most of the currently available antifungal agents. Amphotericin-B (AmB) is an antifungal agent used for the treatment of systematic fungal infections but it is well known for its toxicities and side-effects. Novel approaches are needed to treat these infections that can reduce its toxicities.
Objectives:
Current study aims to evaluate the efficacy of silver nanoparticles (SNPs) alone and in combination with AmB against growth and biofilm formation in C. albicans.
Methods:
Combinations of SNP-AmB were tested against planktonic growth and biofilm formation in vitro. Micro broth dilution method was used to study planktonic growth and biofilm formation. The fractional inhibitory concentration indices (FICI) were calculated by using a checkerboard format. Biofilm formation was analyzed by using XTT-metabolic assay.
Results:
MIC of AmB for developing biofilm was lowered by 16 fold in combination with SNPs. The calculated fractional inhibitory concentration indices were 0.1875 suggesting that this interaction is synergistic. Similarly, the mature biofilms were significantly prevented by SNPs-AmB combination. This interaction was synergistic. Furthermore, interaction between SNPs and AmB against planktonic growth was additive. Hemolytic activity assay was carried out on these drugs and combinations. Drug required for inhibition alone as well as in combination did not exhibit hemolytic activity.
Conclusion:
The combinations with SNPs lead to decreases in the dosage of AmB required for anti-Candida activity. SNPs-AmB combination could be an effective strategy against biofilm formed by C. albicans.
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Marchese A, Barbieri R, Coppo E, Orhan IE, Daglia M, Nabavi SF, Izadi M, Abdollahi M, Nabavi SM, Ajami M. Antimicrobial activity of eugenol and essential oils containing eugenol: A mechanistic viewpoint. Crit Rev Microbiol 2017; 43:668-689. [PMID: 28346030 DOI: 10.1080/1040841x.2017.1295225] [Citation(s) in RCA: 255] [Impact Index Per Article: 36.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Eugenol is a hydroxyphenyl propene, naturally occurring in the essential oils of several plants belonging to the Lamiaceae, Lauraceae, Myrtaceae, and Myristicaceae families. It is one of the major constituents of clove (Syzygium aromaticum (L.) Merr. & L.M. Perry, Myrtaceae) oil and is largely used in both foods and cosmetics as a flavoring agent. A large body of recent scientific evidence supports claims from traditional medicine that eugenol exerts beneficial effects on human health. These effects are mainly associated with antioxidant and anti-inflammatory activities. Eugenol has also shown excellent antimicrobial activity in studies, being active against fungi and a wide range of gram-negative and gram-positive bacteria. The aim of this review is to analyze scientific data from the main published studies describing the antibacterial and antifungal activities of eugenol targeting different kind of microorganisms, such as those responsible for human infectious diseases, diseases of the oral cavity, and food-borne pathogens. This article also reports the effects of eugenol on multi-drug resistant microorganisms. On the basis of this collected data, eugenol represents a very interesting bioactive compound with broad spectrum antimicrobial activity against both planktonic and sessile cells belonging to food-decaying microorganisms and human pathogens.
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Affiliation(s)
- Anna Marchese
- a Sezione di Microbiologia DISC-IRCCS San Martino-IST University of Genoa , Genoa , Italy
| | - Ramona Barbieri
- b Sezione di Microbiologia DISC University of Genoa , Genoa , Italy
| | - Erika Coppo
- b Sezione di Microbiologia DISC University of Genoa , Genoa , Italy
| | - Ilkay Erdogan Orhan
- c Department of Pharmacognosy, Faculty of Pharmacy , Gazi University , Ankara , Turkey
| | - Maria Daglia
- d Department of Drug Sciences, Medicinal Chemistry and Pharmaceutical Technology Section , University of Pavia , Pavia , Italy
| | - Seyed Fazel Nabavi
- e Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences , Tehran , Iran
| | - Morteza Izadi
- f Health Research Center, Baqiyatallah University of Medical Sciences , Tehran , Iran
| | - Mohammad Abdollahi
- g Toxicology and Diseases Group , Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences , Tehran , Iran
| | - Seyed Mohammad Nabavi
- e Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences , Tehran , Iran
| | - Marjan Ajami
- h Faculty of Nutrition Science and Food Technology , National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences , Tehran , Iran
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Lu M, Li T, Wan J, Li X, Yuan L, Sun S. Antifungal effects of phytocompounds on Candida species alone and in combination with fluconazole. Int J Antimicrob Agents 2016; 49:125-136. [PMID: 28040409 DOI: 10.1016/j.ijantimicag.2016.10.021] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Revised: 09/14/2016] [Accepted: 10/14/2016] [Indexed: 12/14/2022]
Abstract
Invasive fungal infections caused by Candida spp. remain the most predominant nosocomial fungal infections. Owing to the increased use of antifungal agents, resistance of Candida spp. to antimycotics has emerged frequently, especially to fluconazole (FLC). To cope with this issue, new efforts have been dedicated to discovering novel antimycotics or new agents that can enhance the susceptibility of Candida spp. to existing antimycotics. The secondary metabolites of plants represent a large library of compounds that are important sources for new drugs or compounds suitable for further modification. Research on the anti-Candida activities of phytocompounds has been carried out in recent years and the results showed that a series of phytocompounds have anti-Candida properties, such as phenylpropanoids, flavonoids, terpenoids and alkaloids. Among these phytocompounds, some displayed potent antifungal activity, with minimum inhibitory concentrations (MICs) of ≤8 µg/mL, and several compounds were even more effective against drug-resistant Candida spp. than FLC or itraconazole (e.g. honokiol, magnolol and shikonin). Interestingly, quite a few phytocompounds not only displayed anti-Candida activity alone but also synergised with FLC against Candida spp., even leading to a reversal of FLC resistance. This review focuses on summarising the anti-Candida activities of phytocompounds as well as the interactions of phytocompounds with FLC. In addition, we briefly overview the synergistic mechanisms and present the structure of the antimycotic phytocompounds. Hopefully, this analysis will provide insight into antifungal agent discovery and new approaches against antifungal drug resistance.
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Affiliation(s)
- Mengjiao Lu
- School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong Province 250012, China
| | - Tao Li
- Intensive Care Unit, Qianfoshan Hospital affiliated to Shandong University, Jinan, Shandong Province 250014, China
| | - Jianjian Wan
- Department of Respiratory, Yucheng People's Hospital, Yucheng, Shandong Province 251200, China
| | - Xiuyun Li
- School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong Province 250012, China
| | - Lei Yuan
- Department of Pharmacy, Baodi District People's Hospital, Tianjin 301800, China
| | - Shujuan Sun
- Department of Pharmacy, Qianfoshan Hospital Affiliated to Shandong University, Jinan, Shandong Province 250014, China.
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Kim YG, Lee JH, Gwon G, Kim SI, Park JG, Lee J. Essential Oils and Eugenols Inhibit Biofilm Formation and the Virulence of Escherichia coli O157:H7. Sci Rep 2016; 6:36377. [PMID: 27808174 PMCID: PMC5093407 DOI: 10.1038/srep36377] [Citation(s) in RCA: 116] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 10/14/2016] [Indexed: 02/06/2023] Open
Abstract
Enterohemorrhagic Escherichia coli O157:H7 (EHEC) has caused foodborne outbreaks worldwide and the bacterium forms antimicrobial-tolerant biofilms. We investigated the abilities of various plant essential oils and their components to inhibit biofilm formation by EHEC. Bay, clove, pimento berry oils and their major common constituent eugenol at 0.005% (v/v) were found to markedly inhibit EHEC biofilm formation without affecting planktonic cell growth. In addition, three other eugenol derivatives isoeugenol, 2-methoxy-4-propylphenol, and 4-ethylguaiacol had antibiofilm activity, indicating that the C-1 hydroxyl unit, the C-2 methoxy unit, and C-4 alkyl or alkane chain on the benzene ring of eugenol play important roles in antibiofilm activity. Interestingly, these essential oils and eugenol did not inhibit biofilm formation by three laboratory E. coli K-12 strains that reduced curli fimbriae production. Transcriptional analysis showed that eugenol down-regulated 17 of 28 genes analysed, including curli genes (csgABDFG), type I fimbriae genes (fimCDH) and ler-controlled toxin genes (espD, escJ, escR, and tir), which are required for biofilm formation and the attachment and effacement phenotype. In addition, biocompatible poly(lactic-co-glycolic acid) coatings containing clove oil or eugenol exhibited efficient biofilm inhibition on solid surfaces. In a Caenorhabditis elegans nematode model, clove oil and eugenol attenuated the virulence of EHEC.
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Affiliation(s)
- Yong-Guy Kim
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Jin-Hyung Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Giyeon Gwon
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Soon-Il Kim
- Nareso Research Center, Seoho-ro 89, Suwon 16614, Republic of Korea
| | - Jae Gyu Park
- Pohang Center for Evaluation of Biomaterials, Pohang Technopark Foundation, Pohang 37668, Republic of Korea
| | - Jintae Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
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Venkateswaran S, Henrique Dos Santos OD, Scholefield E, Lilienkampf A, Gwynne PJ, Swann DG, Dhaliwal K, Gallagher MP, Bradley M. Fortified interpenetrating polymers - bacteria resistant coatings for medical devices. J Mater Chem B 2016; 4:5405-5411. [PMID: 27746915 PMCID: PMC5038341 DOI: 10.1039/c6tb01110a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 07/15/2016] [Indexed: 12/04/2022]
Abstract
Infections arising from contaminated medical devices are a serious global issue, contributing to antibiotic resistance and imposing significant strain on healthcare systems. Since the majority of medical device-associated infections are biofilm related, efforts are being made to generate either bacteria-repellent or antibacterial coatings aimed at preventing bacterial colonisation. Here, we utilise a nanocapsule mediated slow release of a natural antimicrobial to improve the performance of a bacteria repellent polymer coating. Poly(lauryl acrylate) nanocapsules containing eugenol (4-allyl-2-methoxyphenol) were prepared and entrapped within a interpenetrating network designed to repel bacteria. When coated on a catheter and an endotracheal tube, this hemocompatible system allowed slow-release of eugenol, resulting in notable reduction in surface-bound Klebsiella pneumoniae and methicillin resistant Staphylococcus aureus.
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Affiliation(s)
- Seshasailam Venkateswaran
- EaStCHEM School of Chemistry , University of Edinburgh , King's Buildings , West Mains Road , Edinburgh , EH9 3FJ , UK .
| | - Orlando David Henrique Dos Santos
- Laboratório de Fitotecnologia , Departamento de Farmácia , Escola de Farmácia , Universidade Federal de Ouro Preto , Ouro Preto , Minas Gerais 35400-000 , Brazil
| | - Emma Scholefield
- MRC Centre for Inflammation Research , The Queens Medical Research Institute , University of Edinburgh , 47 Little France Crescent , Edinburgh EH16 4TJ , UK
| | - Annamaria Lilienkampf
- EaStCHEM School of Chemistry , University of Edinburgh , King's Buildings , West Mains Road , Edinburgh , EH9 3FJ , UK .
| | - Peter J Gwynne
- School of Biological Sciences , University of Edinburgh, King's Buildings , West Mains Road , Edinburgh , EH9 3JF , UK
| | - David G Swann
- Critical Care , NHS Lothian , Royal Infirmary of Edinburgh , 51 Little France Crescent , Edinburgh , EH16 4SA , UK
| | - Kevin Dhaliwal
- MRC Centre for Inflammation Research , The Queens Medical Research Institute , University of Edinburgh , 47 Little France Crescent , Edinburgh EH16 4TJ , UK
| | - Maurice P Gallagher
- School of Biological Sciences , University of Edinburgh, King's Buildings , West Mains Road , Edinburgh , EH9 3JF , UK
| | - Mark Bradley
- EaStCHEM School of Chemistry , University of Edinburgh , King's Buildings , West Mains Road , Edinburgh , EH9 3FJ , UK .
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Vitali A, Vavala E, Marzano V, Leone C, Castagnola M, Iavarone F, Angiolella L. Cell wall composition and biofilm formation of azoles-susceptible and -resistant Candida glabrata strains. J Chemother 2016; 29:164-172. [PMID: 27439026 DOI: 10.1080/1120009x.2016.1199507] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
In the present study, three strains of Candida glabrata have been investigated to shed light on the mechanisms involved in azole resistance during adherence and biofilm formation. In particular, a clinical isolate, susceptible to azole-based drugs, DSY562 and two different resistant mutagenic strains deriving from DSY562, SFY114 and SFY115, have been analysed with different approaches for their cell wall composition and properties. A proteomic analysis revealed that the expression of six cell wall-related proteins and biofilm formation varied between the strains. The SFY114 and SFY115 strains resulted to be less hydrophobic than the susceptible parental counterpart DSY562, on the other hand they showed a higher amount in total cell wall polysaccharides fraction in the total cell wall. Accordingly to the results obtained from the hydrophobicity and adherence assays, in the resistant strain SFY115 the biofilm formation decreased compared to the parental strain DSY562. Finally, the total glucose amount in resistant SFY115 was about halved in comparison to other strains. Taken together all these data suggest that azole drugs may affect the cell wall composition of C. glabrata, in relation to the different pathogenic behaviours.
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Affiliation(s)
- Alberto Vitali
- a CNR-ICRM, c/o Institute of Biochemistry and Clinical Biochemistry , Catholic University , Largo F. Vito 1, Rome 00168 , Italy
| | - Elisabetta Vavala
- b Department of Public Health and Infectious Diseases , "Sapienza" University of Rome , P.le Aldo Moro 5, Rome 00161 , Italy
| | - Valeria Marzano
- c Institute of Biochemistry and Clinical Biochemistry , Catholic University , Largo F. Vito 1, Rome 00168 , Italy
| | - Claudia Leone
- b Department of Public Health and Infectious Diseases , "Sapienza" University of Rome , P.le Aldo Moro 5, Rome 00161 , Italy
| | - Massimo Castagnola
- c Institute of Biochemistry and Clinical Biochemistry , Catholic University , Largo F. Vito 1, Rome 00168 , Italy
| | - Federica Iavarone
- c Institute of Biochemistry and Clinical Biochemistry , Catholic University , Largo F. Vito 1, Rome 00168 , Italy
| | - Letizia Angiolella
- b Department of Public Health and Infectious Diseases , "Sapienza" University of Rome , P.le Aldo Moro 5, Rome 00161 , Italy
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Lahaye É, Renaux JJ, Le Tilly V, Sire O. Evolution of a fungal ecosystem in a water distribution system to a positive bacterial biofilm subsequent to a treatment using essential oils. CR CHIM 2016. [DOI: 10.1016/j.crci.2015.09.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Mahboub R, Memmou F. Antimicrobial Properties of 6-Bromoeugenol and Eugenol. INTERNATIONAL LETTERS OF NATURAL SCIENCES 2016. [DOI: 10.18052/www.scipress.com/ilns.53.57] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
We have studied the antimicrobial properties of 6-bromoeugenol and eugenol by three strains:Pseudomonas aeruginosa(S1),Escherichia coli(S2) andStaphylococcus aureus(S3). We have determined the minimum inhibitory concentration (MIC) for a range of concentrations using the disc diffusion method. We note that all samples present an antimicrobial activity toward the tested bacterial strains at different concentrations (1, 0.5 and 0.25 mg/ml). The 6-bromoeugenol gives modest activity with (S1) and (S3). Eugenol reacts positively with thePseudomonas aeruginosa(S1) at all concentrations and with theEscherichiacoli(S2) at 0.5 mg/ml. We remark that thePseudomonas aeruginosa(S1) is the more sensitive strain thanEscherichiacoli(S2) andStaphylococcus aureus(S3). We have estimated the activity coefficient which has confirmed the antimicrobial activity of the different samples. So, 6-bromoeugenol has shown his efficiency as antimicrobial agent.
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An D, Wang X, Li J, Jiang S, Ma X, Zhang H, Shi H, Sun H, Ye L, Li J. The Activity of Fungichromin against the Formation of Candida albicans Biofilm. Biol Pharm Bull 2016; 39:1948-1954. [DOI: 10.1248/bpb.b16-00380] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Duopeng An
- Department of Biosynthetic Medicinal Chemistry, School of Pharmacy, Fudan University
| | - Xiang Wang
- Department of Biosynthetic Medicinal Chemistry, School of Pharmacy, Fudan University
| | - Jun Li
- Department of Biosynthetic Medicinal Chemistry, School of Pharmacy, Fudan University
| | - Shanshan Jiang
- Department of Biosynthetic Medicinal Chemistry, School of Pharmacy, Fudan University
| | | | | | | | | | - Li Ye
- Department of Biosynthetic Medicinal Chemistry, School of Pharmacy, Fudan University
| | - Jiyang Li
- Department of Biosynthetic Medicinal Chemistry, School of Pharmacy, Fudan University
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Esmaeili F, Rajabnejhad S, Partoazar AR, Mehr SE, Faridi-Majidi R, Sahebgharani M, Syedmoradi L, Rajabnejhad MR, Amani A. Anti-inflammatory effects of eugenol nanoemulsion as a topical delivery system. Pharm Dev Technol 2015; 21:887-893. [DOI: 10.3109/10837450.2015.1078353] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Matthes R, Jablonowski L, Koban I, Quade A, Hübner NO, Schlueter R, Weltmann KD, von Woedtke T, Kramer A, Kocher T. In vitro treatment of Candida albicans biofilms on denture base material with volume dielectric barrier discharge plasma (VDBD) compared with common chemical antiseptics. Clin Oral Investig 2015; 19:2319-26. [PMID: 25898894 DOI: 10.1007/s00784-015-1463-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Accepted: 03/18/2015] [Indexed: 01/04/2023]
Abstract
OBJECTIVES To prevent oral candidiasis, it is crucial to inactivate Candida-based biofilms on dentures. Common denture cleansing solutions cannot sufficiently inactivate Candida albicans. Therefore, we investigated the anticandidal efficacy of a physical plasma against C. albicans biofilms in vitro. MATERIALS AND METHODS Argon or argon plasma with 1 % oxygen admixture was applied on C. albicans biofilms grown for 2, 7, or 16 days on polymethylmethacrylate discs; 0.1 % chlorhexidine digluconate (CHX) and 0.6 % sodium hypochlorite (NaOCl) solutions served as positive treatment controls. In addition, these two solutions were applied in combination with plasma for 30 min to assess potential synergistic effects. The anticandidal efficacy was determined by the number of colony forming units (CFU) in log(10) and expressed as reduction factor (RF, the difference between control and treated specimen). RESULTS On 2-day-biofilms, plasma treatment alone or combined with 30 min CHX treatment led to significant differences of means of CFU (RF = 4.2 and RF = 4.3), clearly superior to CHX treatment alone (RF = 0.6). Plasma treatment of 7-day-or 16-day-old biofilms revealed no significant CFU reduction. The treatment of 7-day-old (RF = 1.7) and 16-day-old (RF = 1.3) biofilms was slightly more effective with NaOCl alone than with the combined treatment of NaOCl and plasma (RF = 1.6/RF = 1.9). The combination of CHX and plasma increased the RF immaterially. CONCLUSION The use of plasma alone and in combination with antiseptics is promising anticandidal regimens for daily use on dentures when biofilms are not older than 2 days. CLINICAL RELEVANCE Plasma could help to reduce denture-associated candidiasis.
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Affiliation(s)
- Rutger Matthes
- Unit of Periodontology, Dental School, University of Greifswald, Rotgerberstr. 8, 17475, Greifswald, Germany. .,Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489, Greifswald, Germany.
| | - Lukasz Jablonowski
- Unit of Periodontology, Dental School, University of Greifswald, Rotgerberstr. 8, 17475, Greifswald, Germany.,Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489, Greifswald, Germany
| | - Ina Koban
- Unit of Periodontology, Dental School, University of Greifswald, Rotgerberstr. 8, 17475, Greifswald, Germany
| | - Antje Quade
- Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489, Greifswald, Germany
| | - Nils-Olaf Hübner
- Institute of Hygiene and Environmental Medicine, University Medicine Greifswald, Walther-Rathenau-Str. 49 a, 17475, Greifswald, Germany
| | - Rabea Schlueter
- Institute of Microbiology, University of Greifswald, Friedrich-Ludwig-Jahn-Str. 15, 17487, Greifswald, Germany
| | - Klaus-Dieter Weltmann
- Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489, Greifswald, Germany
| | - Thomas von Woedtke
- Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489, Greifswald, Germany
| | - Axel Kramer
- Institute of Hygiene and Environmental Medicine, University Medicine Greifswald, Walther-Rathenau-Str. 49 a, 17475, Greifswald, Germany
| | - Thomas Kocher
- Unit of Periodontology, Dental School, University of Greifswald, Rotgerberstr. 8, 17475, Greifswald, Germany
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Adil M, Singh K, Verma PK, Khan AU. Eugenol-induced suppression of biofilm-forming genes in Streptococcus mutans: An approach to inhibit biofilms. J Glob Antimicrob Resist 2014; 2:286-292. [DOI: 10.1016/j.jgar.2014.05.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Revised: 05/21/2014] [Accepted: 05/22/2014] [Indexed: 10/25/2022] Open
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Gupta P, Nath S, Meena R, Kumar N. Comparative effects of hypoxia and hypoxia mimetic cobalt chloride on in vitro adhesion, biofilm formation and susceptibility to amphotericin B of Candida glabrata. J Mycol Med 2014; 24:e169-77. [DOI: 10.1016/j.mycmed.2014.08.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Revised: 06/26/2014] [Accepted: 08/18/2014] [Indexed: 12/19/2022]
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Abstract
In this work, we report the antioxidant and free radical scavenging activity of 6-bromoeugenol and eugenol. EC50, the concentration providing 50% inhibition, is calculated and the antioxidant activity index (AAI) is evaluated. The antioxidant activity was evaluated using 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical-scavenging method. EC50 values of 6-bromoeugenol, ascorbic acid and eugenol were 34.270 μg/mL, 54.888 μg/mL and 130.485 μg/mL, respectively. 6-Bromoeugenol showed higher AAI value (1.122) followed by ascorbic acid (0.700), then by eugenol (0.295). We also investigate the kinetics of DPPH radical scavenging activity of our products to determine the useful parameter TEC50 to evaluate their antiradical efficiency (ARE). Our results have shown high ARE. This study has provided the following ARE ( × 10(-3)) order for the tested antioxidants: ascorbic acid (70.119)>6-bromoeugenol (34.842) > eugenol (21.313). Finally, we classify ascorbic acid and eugenol as fast kinetics reaction (TEC50 8.82 and 11.38 min, respectively) and 6-bromoeugenol as medium kinetics reaction (TEC50 39.24 min).
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Affiliation(s)
- Radia Mahboub
- a Department of Chemistry , Faculty of Sciences, University of Tlemcen , B.P. 119, Tlemcen 13 000 , Algeria
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Garg A, Singh S. Targeting of eugenol-loaded solid lipid nanoparticles to the epidermal layer of human skin. Nanomedicine (Lond) 2014; 9:1223-38. [DOI: 10.2217/nnm.13.33] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: The purpose of this study was to formulate carbopol hydrogels containing eugenol-loaded solid lipid nanoparticles (EG–SLNs) for epidermal targeting to treat fungal infections in skin. Materials & methods: EG–SLNs were incorporated into carbopol hydrogels and the physiochemical characteristics of EG–SLN in hydrogels were investigated by dynamic light scattering, transmission electron microscopy and atomic force microscopy. Rheological behavior and mechanical properties of hydrogels were also studied before and after incorporation of EG–SLNs. The epidermal-targeting ability of EG–SLN-enriched hydrogels was evaluated by estimation of eugenol in the epidermis of human cadaver skin. An occlusion (hydration) study was also performed to elucidate the mechanism of epidermal targeting of EG–SLN-enriched hydrogels. Results: The particle size (d90) and morphology of EG–SLNs were not significantly changed after incorporation into the hydrogel. EG–SLN of stearic acid-enriched hydrogels follow the Carreau model that describes pseudoplastic flow. The hydrogel containing EG–SLN of stearic acid and of Compritol® (Gattefose, Mumbai, India) showed significantly greater accumulation of eugenol in the epidermis (62.65 ± 4.35 and 52.86 ± 3.76 µg/cm2, respectively) than that of eugenol–hydroxypropyl-β–cyclodextrin complex in hydrogel (9.77 ± 1.16 µg/cm2) and almond oil solution of eugenol (3.45 ± 0.6 µg/cm2). The occlusion study demonstrated greater hydration of human cadaver skin treated with EG–SLN-enriched hydrogel compared with that of hydrogel and intact skin. Conclusion: Hydrogels containing EG–SLNs could be a promising formulation for epidermal targeting to treat fungal infections in skin. Original submitted 26 March 2012; Revised submitted 29 January 2013
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Affiliation(s)
- Anuj Garg
- Department of Pharmaceutics, Indian Institute of Technology (Banaras Hindu University), Varanasi-221005, India
- Department of Pharmaceutics, National Institute of Pharmaceutical Education & Research (NIPER), ITI Compound, Raebareli-229010, India
| | - Sanjay Singh
- Department of Pharmaceutics, Indian Institute of Technology (Banaras Hindu University), Varanasi-221005, India
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Effect of Eugenol on Cell Surface Hydrophobicity, Adhesion, and Biofilm of Candida tropicalis and Candida dubliniensis Isolated from Oral Cavity of HIV-Infected Patients. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 2014:505204. [PMID: 24799938 PMCID: PMC3996878 DOI: 10.1155/2014/505204] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2013] [Accepted: 02/21/2014] [Indexed: 11/17/2022]
Abstract
Most Candida spp. infections are associated with biofilm formation on host surfaces. Cells within these communities display a phenotype resistant to antimicrobials and host defenses, so biofilm-associated infections are difficult to treat, representing a source of reinfections. The present study evaluated the effect of eugenol on the adherence properties and biofilm formation capacity of Candida dubliniensis and Candida tropicalis isolated from the oral cavity of HIV-infected patients. All isolates were able to form biofilms on different substrate surfaces. Eugenol showed inhibitory activity against planktonic and sessile cells of Candida spp. No metabolic activity in biofilm was detected after 24 h of treatment. Scanning electron microscopy demonstrated that eugenol drastically reduced the number of sessile cells on denture material surfaces. Most Candida species showed hydrophobic behavior and a significant difference in cell surface hydrophobicity was observed after exposure of planktonic cells to eugenol for 1 h. Eugenol also caused a significant reduction in adhesion of most Candida spp. to HEp-2 cells and to polystyrene. These findings corroborate the effectiveness of eugenol against Candida species other than C. albicans, reinforcing its potential as an antifungal applied to limit both the growth of planktonic cells and biofilm formation on different surfaces.
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Vasconcelos LCD, Sampaio FC, Albuquerque ADJDR, Vasconcelos LCDS. Cell Viability of Candida albicans Against the Antifungal Activity of Thymol. Braz Dent J 2014; 25:277-81. [DOI: 10.1590/0103-6440201300052] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Accepted: 07/22/2014] [Indexed: 11/21/2022] Open
Abstract
Candida albicans is a commensal fungus, but circumstantially it may cause superficial infections of the mucous membranes, such as denture stomatitis, when a biofilm is formed on the surface of dental prostheses. This study evaluated the cell viability of C. albicans biofilms against the antifungal activity of thymol when compared with miconazole, by the fluorescence imaging using SYTO 9 and propidium iodide dyes, and counting of colony forming units. C. albicans standard strains (ATCC 11006) were used. The minimum inhibitory concentration (MIC) and minimum fungicidal concentration (MFC) of drugs were determined by broth microdilution tests and the inoculum was standardized to match 0.5 on the McFarland scale (106 cfu/mL). Biofilms were grown on the surface of acrylic resin disks in parallel flow chambers from Sabouraud broth supplemented with 10% dextrose. For counting of colony forming units, the fungal solution was sequentially diluted and plated in Sabouraud dextrose agar. Data were analyzed using two-way ANOVA and Tukey's test (a=5%). Biofilms treated with thymol and miconazole presented low numbers of viable cells at the evaluated exposure times. There was statistically significant difference (p<0.05) when compared with control, and the mean value of the exposure times between miconazole and thymol did not differ significantly (p>0.05). In conclusion, both drugs have similar efficiency as antifungal agents against biofilms of C. albicans formed on acrylic surfaces.
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de Freitas Araújo MG, Pacífico M, Vilegas W, Dos Santos LC, Icely PA, Miró MS, Scarpa MVC, Bauab TM, Sotomayor CE. Evaluation ofSyngonanthus nitens(Bong.) Ruhl. extract as antifungal and in treatment of vulvovaginal candidiasis. Med Mycol 2013; 51:673-82. [DOI: 10.3109/13693786.2013.795294] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Vashisth P, Nikhil K, Pemmaraju SC, Pruthi PA, Mallick V, Singh H, Patel A, Mishra NC, Singh RP, Pruthi V. Antibiofilm activity of quercetin-encapsulated cytocompatible nanofibers against Candida albicans. J BIOACT COMPAT POL 2013. [DOI: 10.1177/0883911513502279] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
In this study, nanofibers against pro dimorphic fungal sessile growth were developed. Quercetin was successfully encapsulated within poly(d,l-lactide- co-glycolide)–poly(ε-caprolactone) nanofibers using an electrospinning technique. Field emission scanning electron microscopy, fluorescent microscopy, and Fourier-transformed infrared spectrometer were used to confirm the formation as well as encapsulation of quercetin within the nanofibers. These fabricated nanofibers were further evaluated to determine the effectiveness of the antibiofilm activity against Candida albicans. The cytocompatibility of quercetin-encapsulated nanofibers was found to be similar to control and pure polymeric nanofibers based on 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay against human embryonic kidney (HEK-293) cell lines. These fabricated nanofibers potentially could be used as coatings on biomedical devices to inhibit microbial contaminations.
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Affiliation(s)
- Priya Vashisth
- Department of Biotechnology, Indian Institute of Technology Roorkee (IITR), Roorkee, Uttarakhand, India
| | - Kumar Nikhil
- Department of Biotechnology, Indian Institute of Technology Roorkee (IITR), Roorkee, Uttarakhand, India
| | - Suma C Pemmaraju
- Department of Biotechnology, Indian Institute of Technology Roorkee (IITR), Roorkee, Uttarakhand, India
| | - Parul A Pruthi
- Department of Biotechnology, Indian Institute of Technology Roorkee (IITR), Roorkee, Uttarakhand, India
| | - Vivekanand Mallick
- Department of Biotechnology, Indian Institute of Technology Roorkee (IITR), Roorkee, Uttarakhand, India
| | - Harmeet Singh
- Department of Biotechnology, Indian Institute of Technology Roorkee (IITR), Roorkee, Uttarakhand, India
| | - Alok Patel
- Department of Biotechnology, Indian Institute of Technology Roorkee (IITR), Roorkee, Uttarakhand, India
| | - Narayan C Mishra
- Department of Polymer Science and Engineering, Indian Institute of Technology Roorkee (IITR), Saharanpur, Uttar Pradesh, India
| | - Rajesh P Singh
- Department of Biotechnology, Indian Institute of Technology Roorkee (IITR), Roorkee, Uttarakhand, India
| | - Vikas Pruthi
- Department of Biotechnology, Indian Institute of Technology Roorkee (IITR), Roorkee, Uttarakhand, India
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de Oliveira Pereira F, Mendes JM, de Oliveira Lima E. Investigation on mechanism of antifungal activity of eugenol againstTrichophyton rubrum. Med Mycol 2013. [DOI: 10.3109/13693786.2012.742966] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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47
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Giaouris E, Heir E, Hébraud M, Chorianopoulos N, Langsrud S, Møretrø T, Habimana O, Desvaux M, Renier S, Nychas GJ. Attachment and biofilm formation by foodborne bacteria in meat processing environments: causes, implications, role of bacterial interactions and control by alternative novel methods. Meat Sci 2013; 97:298-309. [PMID: 23747091 DOI: 10.1016/j.meatsci.2013.05.023] [Citation(s) in RCA: 217] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2012] [Revised: 05/15/2013] [Accepted: 05/16/2013] [Indexed: 12/19/2022]
Abstract
Attachment of potential spoilage and pathogenic bacteria to food contact surfaces and the subsequent biofilm formation represent serious challenges to the meat industry, since these may lead to cross-contamination of the products, resulting in lowered-shelf life and transmission of diseases. In meat processing environments, microorganisms are sometimes associated to surfaces in complex multispecies communities, while bacterial interactions have been shown to play a key role in cell attachment and detachment from biofilms, as well as in the resistance of biofilm community members against antimicrobial treatments. Disinfection of food contact surfaces in such environments is a challenging task, aggravated by the great antimicrobial resistance of biofilm associated bacteria. In recent years, several alternative novel methods, such as essential oils and bacteriophages, have been successfully tested as an alternative means for the disinfection of microbial-contaminated food contact surfaces. In this review, all these aspects of biofilm formation in meat processing environments are discussed from a microbial meat-quality and safety perspective.
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Affiliation(s)
- Efstathios Giaouris
- Department of Food Science and Nutrition, University of the Aegean, Myrina, Lemnos 81400, Greece.
| | - Even Heir
- Nofima Mat AS, Osloveien 1, N-1430 Ås, Norway
| | - Michel Hébraud
- Institut National de la Recherche Agronomique, site de Theix, UR454 Microbiologie, F-63122 Saint-Genès Champanelle, France
| | - Nikos Chorianopoulos
- Veterinary Research Institute of Athens, Greek Agricultural Organization "Demeter", Aghia Paraskeui15310, Greece
| | | | | | | | - Mickaël Desvaux
- Institut National de la Recherche Agronomique, site de Theix, UR454 Microbiologie, F-63122 Saint-Genès Champanelle, France
| | - Sandra Renier
- Institut National de la Recherche Agronomique, site de Theix, UR454 Microbiologie, F-63122 Saint-Genès Champanelle, France
| | - George-John Nychas
- Laboratory of Microbiology and Biotechnology of Foods, Department of Food Science and Technology, Agricultural University of Athens, Iera Odos 75, Athens 11855, Greece
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Duarte AF, Ferreira S, Oliveira R, Domingues FC. Effect of Coriander Oil (Coriandrum sativum) on Planktonic and Biofilm Cells of Acinetobacter baumannii. Nat Prod Commun 2013. [DOI: 10.1177/1934578x1300800532] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The increasing incidence of hospital-acquired infections caused by multi-drug resistant pathogens, such as Acinetobacter baumannii, coupled with the low efficacy of drugs and rising treatment costs has created interest in the potential antimicrobial properties of natural products. The main objective of this work was to determine the effect of coriander essential oil on Acinetobacter baumannii in different growth phases, as well as its ability to inhibit the formation or eradication of biofilms. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of coriander oil using a microdilution broth susceptibility assay was determined. The effects of different concentrations of coriander oil (ranging from 0.125 to 4×MIC) on biofilm formation and on established biofilm were tested using 96-well microtiter plates. Crystal violet assay was used as indicator of total biofilm biomass and the biofilm viability was assessed with a XTT staining method. It was found that coriander oil presented significant antibacterial activity against all tested strains of A. baumannii, with MIC values between 1 and 4 μL/mL. The MBC values were the same as the MIC, being an indicator of the bactericidal activity of this essential oil. In what concerns the effect of this essential oil on biofilm formation inhibition was observed of at least 85% of biomass formation by all A. baumannii strains using 2×MIC of coriander oil, in addition to a decrease in the metabolic activity of the cells. After exposure to coriander oil, a decrease in 24 h and 48 h-old biofilm biomass and metabolism was seen for all tested concentrations, even with sub-inhibitory concentrations. Coriander essential oil proved to have a significant antibacterial and anti-biofilm activity and should be considered in the development of future disinfectants to control A. baumannii dissemination.
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Affiliation(s)
- Andreia F. Duarte
- CICS-UBI-Health Sciences Research Centre, Faculty of Health Sciences, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Susana Ferreira
- CICS-UBI-Health Sciences Research Centre, Faculty of Health Sciences, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Rosário Oliveira
- Institute for Biotechnology and Bioengineering (IBB), Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Fernanda C. Domingues
- CICS-UBI-Health Sciences Research Centre, Faculty of Health Sciences, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
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Raut JS, Shinde RB, Chauhan NM, Karuppayil SM. Terpenoids of plant origin inhibit morphogenesis, adhesion, and biofilm formation by Candida albicans. BIOFOULING 2013; 29:87-96. [PMID: 23216018 DOI: 10.1080/08927014.2012.749398] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Biofilm-related infections caused by Candida albicans and associated drug resistant micro-organisms are serious problems for immunocompromised populations. Molecules which can prevent or remove biofilms are needed. Twenty-eight terpenoids of plant origin were analysed for their activity against growth, virulence attributes, and biofilms of C. albicans. Eighteen molecules exhibited minimum inhibitory concentrations of <2 mg ml(-1) for planktonic growth. Selected molecules inhibited yeast to hyphal dimorphism at low concentrations (0.031-0.5 mg ml(-1)), while adhesion to a solid surface was prevented at 0.5-2 mg ml(-1). Treatment with 14 terpenoids resulted in significant (p < 0.05) inhibition of biofilm formation, and of these, linalool, nerol, isopulegol, menthol, carvone, α-thujone, and farnesol exhibited biofilm-specific activity. Eight terpenoids were identified as inhibitors of mature biofilms. This study demonstrated the antibiofilm potential of terpenoids, which need to be further explored as therapeutic strategy against biofilm associated infections of C. albicans.
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Affiliation(s)
- Jayant S Raut
- DST-FIST & UGC-SAP School of Life Sciences, SRTM University, Nanded, 431 606, MS, India
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Rukayadi Y, Hwang JK. In vitro activity of xanthorrhizol isolated from the rhizome of Javanese turmeric (Curcuma xanthorrhiza Roxb.) against Candida albicans biofilms. Phytother Res 2012; 27:1061-6. [PMID: 22969012 DOI: 10.1002/ptr.4834] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Revised: 07/09/2012] [Accepted: 08/03/2012] [Indexed: 11/10/2022]
Abstract
The purpose of this study was to investigate the activity of xanthorrhizol isolated from Curcuma xanthorrhiza Roxb. on Candida albicans biofilms at adherent, intermediate, and mature phase of growth. C. albicans biofilms were formed in flat-bottom 96-well microtiter plates. The biofilms of C. albicans at different phases of development were exposed to xanthorrhizol at different concentrations (0.5 µg/mL-256 µg/mL) for 24 h. The metabolic activity of cells within the biofilms was quantified using the XTT reduction assay. Sessile minimum inhibitory concentrations (SMICs) were determined at 50% and 80% reduction in the biofilm OD₄₉₀ compared to the control wells. The SMIC₅₀ and SMIC₈₀ of xanthorrhizol against 18 C. albicans biofilms were 4--16 µg/mL and 8--32 µg/mL, respectively. The results demonstrated that the activity of xanthorrhizol in reducing C. albicans biofilms OD₄₉₀ was dependent on the concentration and the phase of growth of biofilm. Xanthorrhizol at concentration of 8 µg/mL completely reduced in biofilm referring to XTT-colorimetric readings at adherent phase, whereas 32 µg/mL of xanthorrhizol reduced 87.95% and 67.48 % of biofilm referring to XTT-colorimetric readings at intermediate and mature phases, respectively. Xanthorrhizol displayed potent activity against C. albicans biofilms in vitro and therefore might have potential therapeutic implication for biofilm-associated candidal infections.
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Affiliation(s)
- Yaya Rukayadi
- Laboratory of Natural Products-LHS, Department of Food Science, Faculty of Food Science and Technology, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor Darul Ehsan, Malaysia.
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