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Prerna, Chadha J, Khullar L, Mudgil U, Harjai K. A comprehensive review on the pharmacological prospects of Terpinen-4-ol: From nature to medicine and beyond. Fitoterapia 2024; 176:106051. [PMID: 38838826 DOI: 10.1016/j.fitote.2024.106051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Revised: 06/01/2024] [Accepted: 06/01/2024] [Indexed: 06/07/2024]
Abstract
Owing to their extensive biological potential, essential oils (EOs) and their bioactive phytochemicals have gained attention from the scientific community. Within this domain, Terpinen-4-ol (T-4-ol), a bioactive monoterpene alcohol and the major constituent of tea tree oil (TTO), has made its way into translational research. Recent literature on T-4-ol strongly indicates its diverse pharmacological properties, including but not limited to antimicrobial, antivirulent, anti-oxidant, anti-inflammatory, anti-hypertensive, and anti-cancer effects. Hence, this review is the first to provide a comprehensive overview of the sources, bioavailability, safety, pharmaceutical delivery systems, and multifaceted biological properties of T-4-ol, emphasizing its medicinal potential for widescale application. The antibacterial and antifungal effectiveness of T-4-ol has been discussed, encompassing its role in combating a broad spectrum of bacterial and fungal pathogens. The review delves into the antivirulent prospects of T-4-ol, shedding light on its ability to attenuate virulence and mitigate bacterial pathogenesis. Scientific literature on the anti-oxidant and anti-inflammatory activity of T-4-ol highlighting its role in neutralizing reactive oxygen species and modulating inflammatory pathways has also been collated. Furthermore, the review elaborates on the cardioprotective and anti-hypertensive properties of T-4-ol and augments literature on its anti-cancer mechanism against various cancer cell lines. The review also provides in-depth knowledge of the pharmaceutical formulations of T-4-ol and recent knowledge about its application in clinical/field trials. The exploration of these diverse attributes positions T-4-ol as a promising candidate for further research and therapeutic repurposing in various biomedical applications.
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Affiliation(s)
- Prerna
- Department of Microbiology, Panjab University, Chandigarh, India
| | - Jatin Chadha
- Department of Microbiology, Panjab University, Chandigarh, India
| | - Lavanya Khullar
- Department of Microbiology, Panjab University, Chandigarh, India
| | - Umang Mudgil
- Department of Microbiology, Panjab University, Chandigarh, India
| | - Kusum Harjai
- Department of Microbiology, Panjab University, Chandigarh, India.
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2
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Brandes A, Dunning M, Langland J. Antimicrobial Activity of Individual Volatile Compounds from Various Essential Oils. Molecules 2024; 29:1811. [PMID: 38675631 PMCID: PMC11054172 DOI: 10.3390/molecules29081811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 04/11/2024] [Accepted: 04/12/2024] [Indexed: 04/28/2024] Open
Abstract
Interest in natural remedies has grown recently due to a variety of public health concerns such as microbial antibiotic resistance. This global health concern necessitates innovative approaches to combat bacterial infections. Building upon established therapeutic uses of essential oils, this research focused on the volatile constituents of essential oils. The volatile antimicrobial activity of these constituents was studied by employing a derivative of a modified disk diffusion assay for quantitative comparisons. This study emphasizes the significance and value of exploring natural compounds as alternatives to traditional antibiotics and provides insights into their mechanisms and applications in contending with bacterial pathogens.
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Affiliation(s)
| | | | - Jeffrey Langland
- The Ric Scalzo Institute for Botanical Research, Sonoran University of Health Sciences, Tempe, AZ 85282, USA; (A.B.); (M.D.)
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Assis RMADE, Santos JPD, Honorato ADAC, Rocha JPM, Carvalho AADE, Bertolucci SKV, Pinto JEBP. Green manure (Crotalaria juncea L.) enhances Origanum vulgare L. biomass accumulation, essential oil yield, and phytochemical properties. AN ACAD BRAS CIENC 2024; 96:e20230539. [PMID: 38597500 DOI: 10.1590/0001-3765202420230539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 12/14/2023] [Indexed: 04/11/2024] Open
Abstract
Green manure (GM) may reduce the use of chemical fertilizers, been an ecologically appropriate strategy to cultivation of medicinal plants. Crotalaria juncea, is one of the most used because it adapts to different climatic and high nitrogen content. Origanum vulgare. is widely used in cooking, pharmaceutical, cosmetic industries and food products. The objectives of this study were to evaluate the GM on biomass, essential oil (EO), phenolic and antioxidant. The experiment consisted: control; 150, 300, 450, and 600 g (Sh= leaves+steam) more 200 g roots (R); 600 g aerial part; 200 g roots; and soil with 300 g cattle manure per pot. The highest dry weights were observed in the presence of GM and cattle manure (90 days). The control had an EO production 75% lower in relation to the dose of 450 g GM (Sh+R). Principal component analysis showed that GM and cattle manure positively influenced the dry weight, content, yield, and EO constituents, and total flavonoids. The GM contributed to the accumulation of the major EO compounds (trans-sabinene hydrate, thymol, terpinen-4-ol). The GM management may be beneficial for cultivating, because it can increase the production of biomass and the active components, in addition to being an inexpensive resource.
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Affiliation(s)
- Rafael M A DE Assis
- Universidade Federal de Lavras, Departamento de Agricultura, Laboratório de Cultura de Tecidos Vegetais e Plantas Medicinais, Trevo rotatório Professor Edmir Sá Santos, s/n, Campus universitário, Caixa Postal 3037, 37203-202 Lavras, MG, Brazil
| | - Jandeilson P Dos Santos
- Universidade Federal de Lavras, Departamento de Agricultura, Laboratório de Fitoquímica e Plantas Medicinais, Trevo rotatório professor Edmir Sá Santos, s/n, Campus universitário, Caixa Postal 3037, 37203-202 Lavras, MG, Brazil
| | - Alan DA Cunha Honorato
- Universidade Federal de Lavras, Departamento de Agricultura, Laboratório de Fitoquímica e Plantas Medicinais, Trevo rotatório professor Edmir Sá Santos, s/n, Campus universitário, Caixa Postal 3037, 37203-202 Lavras, MG, Brazil
| | - João Pedro M Rocha
- Universidade Federal de Lavras, Departamento de Agricultura, Laboratório de Fitoquímica e Plantas Medicinais, Trevo rotatório professor Edmir Sá Santos, s/n, Campus universitário, Caixa Postal 3037, 37203-202 Lavras, MG, Brazil
| | - Alexandre A DE Carvalho
- Universidade Federal de Lavras, Departamento de Agricultura, Laboratório de Cultura de Tecidos Vegetais e Plantas Medicinais, Trevo rotatório Professor Edmir Sá Santos, s/n, Campus universitário, Caixa Postal 3037, 37203-202 Lavras, MG, Brazil
| | - Suzan Kelly V Bertolucci
- Universidade Federal de Lavras, Departamento de Agricultura, Laboratório de Fitoquímica e Plantas Medicinais, Trevo rotatório professor Edmir Sá Santos, s/n, Campus universitário, Caixa Postal 3037, 37203-202 Lavras, MG, Brazil
| | - José Eduardo B P Pinto
- Universidade Federal de Lavras, Departamento de Agricultura, Laboratório de Cultura de Tecidos Vegetais e Plantas Medicinais, Trevo rotatório Professor Edmir Sá Santos, s/n, Campus universitário, Caixa Postal 3037, 37203-202 Lavras, MG, Brazil
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Gempo N, Yeshi K, Crayn D, Wangchuk P. Climate-Affected Australian Tropical Montane Cloud Forest Plants: Metabolomic Profiles, Isolated Phytochemicals, and Bioactivities. PLANTS (BASEL, SWITZERLAND) 2024; 13:1024. [PMID: 38611553 PMCID: PMC11013060 DOI: 10.3390/plants13071024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 03/27/2024] [Accepted: 03/28/2024] [Indexed: 04/14/2024]
Abstract
The Australian Wet Tropics World Heritage Area (WTWHA) in northeast Queensland is home to approximately 18 percent of the nation's total vascular plant species. Over the past century, human activity and industrial development have caused global climate changes, posing a severe and irreversible danger to the entire land-based ecosystem, and the WTWHA is no exception. The current average annual temperature of WTWHA in northeast Queensland is 24 °C. However, in the coming years (by 2030), the average annual temperature increase is estimated to be between 0.5 and 1.4 °C compared to the climate observed between 1986 and 2005. Looking further ahead to 2070, the anticipated temperature rise is projected to be between 1.0 and 3.2 °C, with the exact range depending on future emissions. We identified 84 plant species, endemic to tropical montane cloud forests (TMCF) within the WTWHA, which are already experiencing climate change threats. Some of these plants are used in herbal medicines. This study comprehensively reviewed the metabolomics studies conducted on these 84 plant species until now toward understanding their physiological and metabolomics responses to global climate change. This review also discusses the following: (i) recent developments in plant metabolomics studies that can be applied to study and better understand the interactions of wet tropics plants with climatic stress, (ii) medicinal plants and isolated phytochemicals with structural diversity, and (iii) reported biological activities of crude extracts and isolated compounds.
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Affiliation(s)
- Ngawang Gempo
- Australian Institute of Tropical Health and Medicine (AITHM), James Cook University, Nguma-bada Campus, McGregor Rd., Cairns, QLD 4878, Australia; (N.G.); (P.W.)
- College of Public Health, Medical and Veterinary Services (CPHMVS), James Cook University, Nguma-bada Campus, McGregor Rd., Cairns, QLD 4878, Australia
| | - Karma Yeshi
- Australian Institute of Tropical Health and Medicine (AITHM), James Cook University, Nguma-bada Campus, McGregor Rd., Cairns, QLD 4878, Australia; (N.G.); (P.W.)
- College of Public Health, Medical and Veterinary Services (CPHMVS), James Cook University, Nguma-bada Campus, McGregor Rd., Cairns, QLD 4878, Australia
| | - Darren Crayn
- Australian Tropical Herbarium (ATH), James Cook University, Nguma-bada Campus, McGregor Rd., Cairns, QLD 4878, Australia;
| | - Phurpa Wangchuk
- Australian Institute of Tropical Health and Medicine (AITHM), James Cook University, Nguma-bada Campus, McGregor Rd., Cairns, QLD 4878, Australia; (N.G.); (P.W.)
- College of Public Health, Medical and Veterinary Services (CPHMVS), James Cook University, Nguma-bada Campus, McGregor Rd., Cairns, QLD 4878, Australia
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Kamiya H, Haraguchi A, Mitarai H, Yuda A, Wada H, Shuxin W, Ziqing R, Weihao S, Wada N. In vitro evaluation of the antimicrobial properties of terpinen-4-ol on apical periodontitis-associated bacteria. J Infect Chemother 2024; 30:306-314. [PMID: 37922985 DOI: 10.1016/j.jiac.2023.10.021] [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: 08/18/2023] [Revised: 10/12/2023] [Accepted: 10/29/2023] [Indexed: 11/07/2023]
Abstract
Manuka oil and tea tree oil are essential oils with known antibacterial properties that are believed to be caused by one main component: terpinen-4-ol. Terpinen-4-ol has potent antibacterial activity against caries-related microorganisms. However, few studies have investigated the antimicrobial effects of terpinen-4-ol on bacteria in apical periodontitis. Thus, the objective of the present study was to evaluate the antibacterial and antibiofilm potential of terpinen-4-ol against Enterococcus faecalis, Porphyromonas gingivalis, Prevotella intermedia, and Fusobacterium nucleatum, which have all been detected in apical periodontitis. The minimum inhibitory and minimum bactericidal concentrations of terpinen-4-ol were determined to assess its activity against biofilms. The minimum inhibitory concentration of terpinen-4-ol was 0.25% against E. faecalis and F. nucleatum, 0.05% against P. gingivalis, and 0.1% against P. intermedia. The minimum bactericidal concentration of terpinen-4-ol was 1.0% against E. faecalis, 0.2% against P. gingivalis and P. intermedia, and 0.5% against F. nucleatum. In the biofilm evaluations, all terpinen-4-ol-treated bacteria had significant reductions in biofilm viability compared with controls in experiments assessing attachment inhibitory activity. Furthermore, structural alterations and decreased bacterial cell clumping were observed under scanning electron microscopy, and significantly decreased cell survival was noted using fluorescence microscopy. Together, these results suggest that terpinen-4-ol is a potential antibacterial agent with bactericidal properties, and can also act on established biofilms.
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Affiliation(s)
- Harunobu Kamiya
- Department of General Dentistry, Division of Interdisciplinary Dentistry, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Akira Haraguchi
- Division of General Dentistry, Kyushu University Hospital, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
| | - Hiromi Mitarai
- Division of General Dentistry, Kyushu University Hospital, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Asuka Yuda
- Division of General Dentistry, Kyushu University Hospital, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Hiroko Wada
- Laboratory of Oral Pathology, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Wang Shuxin
- Department of General Dentistry, Division of Interdisciplinary Dentistry, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Ran Ziqing
- Department of General Dentistry, Division of Interdisciplinary Dentistry, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Sun Weihao
- Department of General Dentistry, Division of Interdisciplinary Dentistry, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Naohisa Wada
- Department of General Dentistry, Division of Interdisciplinary Dentistry, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
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Saeed SI, Kamaruzzaman NF, Gahamanyi N, Nguyen TTH, Hossain D, Kahwa I. Confronting the complexities of antimicrobial management for Staphyloccous aureus causing bovine mastitis: an innovative paradigm. Ir Vet J 2024; 77:4. [PMID: 38418988 PMCID: PMC10900600 DOI: 10.1186/s13620-024-00264-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 02/07/2024] [Indexed: 03/02/2024] Open
Abstract
Globally, Mastitis is a disease commonly affecting dairy cattle which leads to the use of antimicrobials. The majority of mastitis etiological agents are bacterial pathogens and Staphylococcus aureus is the predominant causative agent. Antimicrobial treatment is administered mainly via intramammary and intramuscular routes. Due to increasing antimicrobial resistance (AMR) often associated with antimicrobial misuse, the treatment of mastitis is becoming challenging with less alternative treatment options. Besides, biofilms formation and ability of mastitis-causing bacteria to enter and adhere within the cells of the mammary epithelium complicate the treatment of bovine mastitis. In this review article, we address the challenges in treating mastitis through conventional antibiotic treatment because of the rising AMR, biofilms formation, and the intracellular survival of bacteria. This review article describes different alternative treatments including phytochemical compounds, antimicrobial peptides (AMPs), phage therapy, and Graphene Nanomaterial-Based Therapy that can potentially be further developed to complement existing antimicrobial therapy and overcome the growing threat of AMR in etiologies of mastitis.
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Affiliation(s)
- Shamsaldeen Ibrahim Saeed
- Nanotechnology in Veterinary Medicine Research Group, Faculty of Veterinary Medicine, Universiti Malaysia Kelantan (UMK), Pengkalan Chepa, Kelantan, 16100, Malaysia.
- Microbiology Department, Faculty of Veterinary Science, University of Nyala, PO Box 155, Nyala, Sudan.
| | - Nor Fadhilah Kamaruzzaman
- Nanotechnology in Veterinary Medicine Research Group, Faculty of Veterinary Medicine, Universiti Malaysia Kelantan (UMK), Pengkalan Chepa, Kelantan, 16100, Malaysia
| | - Noel Gahamanyi
- Biology Department, School of Science, College of Science and Technology, University of Rwanda, P.O. Box 3900, Kigali, Rwanda
- Microbiology Unit, National Reference Laboratory, Rwanda Biomedical, P.O. Box 7162, Kigali, Rwanda
| | - Thi Thu Hoai Nguyen
- Research Center for Infectious Diseases, International University, Vietnam National University, Ho Chi Minh City, Vietnam
| | - Delower Hossain
- Department of Veterinary Medicine and Animal Sciences (DIVAS), Università degli Studi di Milano, Lodi, 26900, Italy
- Department of Medicine and Public Health, Faculty of Animal Science and Veterinary Medicine, Sher-e -Bangla Agricultural University (SAU), Dhaka, 1207, Bangladesh
- Udder Health Bangladesh (UHB), Chattogram, 4225, Bangladesh
| | - Ivan Kahwa
- Department of Pharmacy, Faculty of Medicine, Mbarara University of Science and Technology, P.O Box 1410, Mbarara, Uganda
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Sha Y, Liu X, He Y, Zhao S, Hu J, Wang J, Li W, Shao P, Wang F, Chen X, Yang W, Xie Z. Multi-omics revealed rumen microbiota metabolism and host immune regulation in Tibetan sheep of different ages. Front Microbiol 2024; 15:1339889. [PMID: 38414776 PMCID: PMC10896911 DOI: 10.3389/fmicb.2024.1339889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 01/17/2024] [Indexed: 02/29/2024] Open
Abstract
The rumen microbiota and metabolites play an important role in energy metabolism and immune regulation of the host. However, the regulatory mechanism of rumen microbiota and metabolite interactions with host on Tibetan sheep's plateau adaptability is still unclear. We analyzed the ruminal microbiome and metabolome, host transcriptome and serum metabolome characteristics of Tibetan sheep at different ages. Biomarkers Butyrivibrio, Lachnospiraceae_XPB1014_group, Prevotella, and Rikenellaceae_RC9_gut_group were found in 4 months, 1.5 years, 3.5 years, and 6 years Tibetan sheep, respectively. The rumen microbial metabolites were mainly enriched in galactose metabolism, unsaturated fatty acid biosynthesis and fatty acid degradation pathways, and had significant correlation with microbiota. These metabolites further interact with mRNA, and are co-enriched in arginine and proline metabolism, metabolism of xenobiotics by cytochrome P450, propanoate metabolism, starch and sucrose metabolism, gap junction pathway. Meanwhile, serum metabolites also have a similar function, such as chemical carcinogenesis - reactive oxygen species, limonene and pinene degradation, and cutin, suberine and wax biosynthesis, thus participating in the regulation of the body's immune and energy-related metabolic processes. This study systematically revealed that rumen microbiota, metabolites, mRNA and serum metabolites of Tibetan sheep were involved in the regulation of fermentation metabolic function and immune level of Tibetan sheep at different ages, which provided a new perspective for plateau adaptability research of Tibetan sheep at different ages.
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Affiliation(s)
- Yuzhu Sha
- College of Animal Science and Technology/Gansu Key Laboratory of Herbivorous Animal Biotechnology, Gansu Agricultural University, Lanzhou, China
| | - Xiu Liu
- College of Animal Science and Technology/Gansu Key Laboratory of Herbivorous Animal Biotechnology, Gansu Agricultural University, Lanzhou, China
| | - Yanyu He
- School of Fundamental Sciences, Massey University, Palmerston North, New Zealand
| | - Shengguo Zhao
- College of Animal Science and Technology/Gansu Key Laboratory of Herbivorous Animal Biotechnology, Gansu Agricultural University, Lanzhou, China
| | - Jiang Hu
- College of Animal Science and Technology/Gansu Key Laboratory of Herbivorous Animal Biotechnology, Gansu Agricultural University, Lanzhou, China
| | - Jiqing Wang
- College of Animal Science and Technology/Gansu Key Laboratory of Herbivorous Animal Biotechnology, Gansu Agricultural University, Lanzhou, China
| | - Wenhao Li
- Academy of Animal Science and Veterinary Medicine, Qinghai University, Xining, China
| | - Pengyang Shao
- College of Animal Science and Technology/Gansu Key Laboratory of Herbivorous Animal Biotechnology, Gansu Agricultural University, Lanzhou, China
| | - Fanxiong Wang
- College of Animal Science and Technology/Gansu Key Laboratory of Herbivorous Animal Biotechnology, Gansu Agricultural University, Lanzhou, China
| | - Xiaowei Chen
- College of Animal Science and Technology/Gansu Key Laboratory of Herbivorous Animal Biotechnology, Gansu Agricultural University, Lanzhou, China
| | - Wenxin Yang
- College of Animal Science and Technology/Gansu Key Laboratory of Herbivorous Animal Biotechnology, Gansu Agricultural University, Lanzhou, China
| | - Zhuanhui Xie
- College of Animal Science and Technology/Gansu Key Laboratory of Herbivorous Animal Biotechnology, Gansu Agricultural University, Lanzhou, China
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Chen H, Hu P, Liu H, Liu S, Liu Y, Chen L, Feng L, Chen L, Zhou T. Combining with domiphen bromide restores colistin efficacy against colistin-resistant Gram-negative bacteria in vitro and in vivo. Int J Antimicrob Agents 2024; 63:107066. [PMID: 38135012 DOI: 10.1016/j.ijantimicag.2023.107066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 11/20/2023] [Accepted: 12/15/2023] [Indexed: 12/24/2023]
Abstract
Today, colistin is considered a last-resort antibiotic for treating multidrug-resistant (MDR) Gram-negative bacteria (GNB). However, the increased and improper use of colistin has led to the emergence of colistin-resistant (Col-R) GNB. Thus, it is urgent to develop new drugs and therapies in response to the ongoing emergence of colistin resistance. In this study, we investigated the antibacterial and antibiofilm activities of the quaternary ammonium compound domiphen bromide (DB) in combination with colistin against clinical Col-R GNB both in vitro and in vivo. Checkerboard assay and time-kill analysis demonstrated significant synergistic antibacterial effects of the colistin/DB combination. The synergistic antibiofilm activity was confirmed through crystal violet staining and scanning electron microscopy (SEM). Furthermore, the colistin/DB combination exhibited increased survival rates in infected larvae and reduced bacterial loads in a mouse thigh infection model. The cytotoxicity measurement and hemolysis test showed that the combination did not adversely affect cell viability at synergistic concentrations. The alkaline phosphatase (ALP) leak test and propidium iodide (PI) staining analysis further revealed that the colistin/DB combination enhanced the therapeutic effect of colistin by altering bacterial membrane permeability. The ROS assays revealed that the combination induced the accumulation of bacterial ROS, leading to bacterial death. In conclusion, our study is the first to identify DB as a colistin potentiator, effectively restoring the sensitivity of bacteria to colistin. It provides a promising alternative approach for combating Col-R GNB infections.
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Affiliation(s)
- Huanchang Chen
- Department of Clinical Laboratory, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Panjie Hu
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Haifeng Liu
- Department of Clinical Laboratory, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Sichen Liu
- Department of Clinical Laboratory, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yan Liu
- Department of Clinical Laboratory, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Lei Chen
- Department of Clinical Laboratory, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Luozhu Feng
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Lijiang Chen
- Department of Clinical Laboratory, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Tieli Zhou
- Department of Clinical Laboratory, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China.
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9
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Oder M, Piletić K, Fink R, Marijanović Z, Krištof R, Bićanić L, Tomić Linšak D, Gobin I. A synergistic anti-bacterial and anti-adhesion activity of tea tree ( Melaleuca alternifolia) and lemon eucalyptus tree ( Eucalyptus citriodora Hook) essential oils on Legionella pneumophila. BIOFOULING 2024; 40:54-63. [PMID: 38353250 DOI: 10.1080/08927014.2024.2310482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 01/22/2024] [Indexed: 03/09/2024]
Abstract
Legionella pneumophila is a Gram-negative bacterial pathogen that colonizes natural and artificial water systems and has the ability to form a biofilm. The biofilm protects L. pneumophila from various environmental factors and makes it more resistant to chlorine-based disinfectants. This study investigated the anti-bacterial properties of tea tree (Melaleuca alternifolia (Maiden and Betche) Cheel) oil and lemon eucalyptus tree (Eucalyptus citriodora Hook) essential oils (EOs) and their synergistic, additive inhibitory and anti-adhesive effects against L. pneumophila biofilm formation on polystyrene. The minimum effective concentration (MEC) for tea tree is 12.8 mg ml-1 and for lemon eucalyptus tree EO 6.4 mg ml-1. In the checkerboard assay, different combinations of these two EO show synergistic and additive anti-microbial activity. The minimum anti-adhesive concentration (MAC) for tea tree is 12.8 mg ml-1 and for lemon eucalyptus tree EO 6.4 mg ml-1. A combination of 3.2 mg ml-1 tea tree EO and 0.8 mg ml-1 lemon eucalyptus tree EO showed the strongest anti-adhesive effect against L. pneumophila on polystyrene. The tested oils and their combination showed intriguing potential to inhibit L. pneumophila biofilm formation.
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Affiliation(s)
- Martina Oder
- Department of Sanitary Engineering, Faculty of Health Sciences, University of Ljubljana, Ljubljana, Slovenia
| | - Kaća Piletić
- Department of Microbiology and Parasitology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Rok Fink
- Department of Sanitary Engineering, Faculty of Health Sciences, University of Ljubljana, Ljubljana, Slovenia
| | - Zvonimir Marijanović
- Department of Food Technology and Biotechnology, Faculty of Chemistry and Technology, University of Split, Split, Croatia
| | - Romana Krištof
- Department of Sanitary Engineering, Faculty of Health Sciences, University of Ljubljana, Ljubljana, Slovenia
| | - Lucija Bićanić
- Department of Microbiology and Parasitology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Dijana Tomić Linšak
- Department for Health Ecology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Ivana Gobin
- Department of Microbiology and Parasitology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
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Zaini NNM, Salleh WMNHW, Arzmi MH, Salihu AS, Ab Ghani N. Chemical composition of essential oil from Lindera caesia Reinw. ex Fern.-Vill. and its antifungal, antibiofilm, and molecular docking studies. Nat Prod Res 2023:1-6. [PMID: 38146623 DOI: 10.1080/14786419.2023.2298720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 12/16/2023] [Indexed: 12/27/2023]
Abstract
The chemical composition, antifungal, antibiofilm, and molecular docking studies of the essential oil obtained from Lindera caesia were investigated. A total of thirty-nine components (96.7%) were identified using gas chromatography (GC-FID) and gas chromatography-mass spectrometry (GC-MS). The major components included terpinen-4-ol (26.3%), neo-intermedeol (23.2%), eudesma-4,11-dien-3-one (10.4%), and o-cymene (5.3%). The antifungal activity was tested against Candida albicans and Streptococcus mutans using the broth microdilution assay, whereas the microbial biofilms were determined using a semi-quantitative static biofilm. The essential oil exhibited activity against C. albicans (MIC 125 µg/mL) and S. mutans (MIC 250 µg/mL), and increased the biofilm of C. albicans by 31.25% when treated with 500 µg/mL. The molecular docking study shows neo-intermedeol, eudesma-4,11-dien-3-one, α-selinene, and β-selinene as the good candidate to target Erg11 with a binding energy of -7.3 kcal/mol. These findings demonstrated that the essential oil may have potential in dental application for caries prevention.
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Affiliation(s)
- Nur Nabilah Mohd Zaini
- Department of Chemistry, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris, Tanjong Malim, Perak, Malaysia
| | | | - Mohd Hafiz Arzmi
- Department of Fundamental Dental and Medical Sciences, Kulliyyah of Dentistry, International Islamic University Malaysia, Pahang, Malaysia
| | - Abubakar Siddiq Salihu
- Department of Chemistry, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris, Tanjong Malim, Perak, Malaysia
- Department of Pure and Industrial Chemistry, Faculty of Natural and Applied Sciences, Umaru Musa Yar'adua University, Katsina, Nigeria
| | - Nurunajah Ab Ghani
- Atta-ur-Rahman Institute for Natural Product Discovery (AuRIns) Universiti Teknologi MARA, Bandar Puncak Alam, Selangor, Malaysia
- Faculty of Applied Sciences, Universiti Teknologi MARA, Selangor, Shah Alam, Malaysia
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11
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Zhang Y, Han Y, Huang Z, Huang Y, Kong J, Sun Y, Cao J, Zhou T. Restoring Colistin Sensitivity and Combating Biofilm Formation: Synergistic Effects of Colistin and Usnic Acid against Colistin-Resistant Enterobacteriaceae. ACS Infect Dis 2023; 9:2457-2470. [PMID: 37944020 DOI: 10.1021/acsinfecdis.3c00315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
Colistin (COL), the last line of defense in clinical medicine, is an important therapeutic option against multidrug-resistant Gram-negative bacteria. In this context, the emergence of colistin-resistant (COL-R) bacteria mediated by broad-spectrum efflux pumps, mobile genetic elements, and biofilm formation poses a significant public health concern. In response to this challenge, a novel approach of combining COL with usnic acid (UA) has been proposed in this study. UA is a secondary metabolite derived from lichens and is well-known for its anti-inflammatory properties. This study aimed to investigate the synergistic effects of UA and COL against COL-R Enterobacteriaceae both in vitro and in vivo. The exceptional synergistic antibacterial activity exhibited by the combination of COL and UA was demonstrated by performing a comprehensive set of assays, including the checkerboard assay, time-dependent killing assay, and Live/Dead bacterial cell viability assay. Furthermore, crystal violet staining and scanning electron microscopy assays revealed the inhibitory effect of this combination on the biofilm formation. Mechanistically, the combination of UA and COL exacerbated cell membrane rupture, induced DNA damage, and generated a significant amount of reactive oxygen species, which ultimately resulted in bacterial cell death. In addition, erythrocyte hemolysis and cell viability tests confirmed the biocompatibility of the combination. The evaluation of the COL/UA combination in vivo using Galleria mellonella larvae and a mouse infection model showed a significant improvement in the survival rate of the infected larvae as well as a reduction in the bacterial load in the mouse thigh muscle. These findings, for the first time, provide strong evidence for the potential application of COL/UA as an effective alternative therapeutic option to combat infections caused by COL-R Enterobacteriaceae strains.
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Affiliation(s)
- Yi Zhang
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University; Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, Zhejiang Province 325000, China
- Department of Medical Lab Science, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, Zhejiang Province 32500, China
| | - Yijia Han
- Department of Medical Lab Science, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, Zhejiang Province 32500, China
| | - Zeyu Huang
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University; Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, Zhejiang Province 325000, China
| | - Yali Huang
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University; Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, Zhejiang Province 325000, China
| | - Jingchun Kong
- Department of Medical Lab Science, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, Zhejiang Province 32500, China
| | - Yao Sun
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University; Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, Zhejiang Province 325000, China
| | - Jianming Cao
- Department of Medical Lab Science, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, Zhejiang Province 32500, China
| | - Tieli Zhou
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University; Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, Zhejiang Province 325000, China
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12
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Abu Ghazal T, Veres K, Vidács L, Szemerédi N, Spengler G, Berkecz R, Hohmann J. Furanonaphthoquinones, Diterpenes, and Flavonoids from Sweet Marjoram and Investigation of Antimicrobial, Bacterial Efflux, and Biofilm Formation Inhibitory Activities. ACS OMEGA 2023; 8:34816-34825. [PMID: 37780020 PMCID: PMC10536869 DOI: 10.1021/acsomega.3c03982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 09/01/2023] [Indexed: 10/03/2023]
Abstract
The chloroform extract of Origanum majorana exhibited high antibacterial and antifungal activities against 12 bacterial and 4 fungal strains; therefore, it was subjected to bioassay-guided isolation to afford six compounds (1-6). The structures were determined via one- and two-dimensional nuclear magnetic spectroscopy and high-resolution electrospray ionization mass spectrometry experiments. The compounds were identified as furanonaphthoquinones [majoranaquinone (1), 2,3-dimethylnaphtho[2,3-b]furan-4,9-dione (2)], diterpenes [19-hydroxyabieta-8,11,13-trien-7-one (3), 13,14-seco-13-oxo-19-hydroxyabieta-8-en-14-al (4)], and flavonoids [sterubin (5) and majoranin (6)]. Compounds 1 and 2 were first obtained from a natural source and compounds 3 and 4 were previously undescribed. Majoranaquinone (1) exhibited a high antibacterial effect against 4 Staphylococcus, 1 Moraxella, and 1 Enterococcus strains (MIC values between 7.8 μM and 1 mM). In the efflux pump inhibition assay, majoranaquinone (1) showed substantial activity in Escherichia coli ATCC 25922 strain. Furthermore, 1 was found to be an effective biofilm formation inhibitor on E. coli ATCC 25922 and E. coli K-12 AG100 bacteria. Our findings proved that bioactivities of majoranaquinone (1) significantly exceed those of the essential oil constituents; therefore, it should also be considered when assessing the antimicrobial effects of O. majorana.
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Affiliation(s)
| | - Katalin Veres
- Institute
of Pharmacognosy, University of Szeged, Szeged H-6720, Hungary
| | - Lívia Vidács
- Institute
of Pharmacognosy, University of Szeged, Szeged H-6720, Hungary
| | - Nikoletta Szemerédi
- Department
of Medical Microbiology, Albert Szent-Györgyi Health Center
and Albert Szent-Györgyi Medical School, University of Szeged, Szeged H-6720, Hungary
| | - Gabriella Spengler
- Department
of Medical Microbiology, Albert Szent-Györgyi Health Center
and Albert Szent-Györgyi Medical School, University of Szeged, Szeged H-6720, Hungary
| | - Róbert Berkecz
- Institute
of Pharmaceutical Analysis, University of
Szeged, 6720 Szeged, Hungary
| | - Judit Hohmann
- Institute
of Pharmacognosy, University of Szeged, Szeged H-6720, Hungary
- Interdisciplinary
Centre for Natural Products, University
of Szeged, Szeged H-6720, Hungary
- ELKH-USZ
Biologically Active Natural Products Research Group, University of Szeged, Szeged H-6720, Hungary
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13
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Szewczuk MA, Zych S, Oster N, Karakulska J. Activity of Patchouli and Tea Tree Essential Oils against Staphylococci Isolated from Pyoderma in Dogs and Their Synergistic Potential with Gentamicin and Enrofloxacin. Animals (Basel) 2023; 13:ani13081279. [PMID: 37106842 PMCID: PMC10134980 DOI: 10.3390/ani13081279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/31/2023] [Accepted: 04/05/2023] [Indexed: 04/29/2023] Open
Abstract
In this paper, we show the effect of some essential oils (EOs) on staphylococci, including multidrug-resistant strains isolated from pyoderma in dogs. A total of 13 Staphylococcus pseudintermedius and 8 Staphylococcus aureus strains were studied. To assess the sensitivity of each strain to the antimicrobial agents, two commercial EOs from patchouli (Pogostemon cablin; PcEO) and tea tree (Melaleuca alternifolia; MaEO) as well as two antibiotics (gentamicin and enrofloxacin) were used. The minimum inhibitory concentration (MIC) followed by checkerboards in the combination of EO-antibiotic were performed. Finally, fractional inhibitory concentrations were calculated to determine possible interactions between these antimicrobial agents. PcEO MIC ranged from 0.125 to 0.5 % v/v (1.2-4.8 mg/mL), whereas MaEO MIC was tenfold higher (0.625-5% v/v or 5.6-44.8 mg/mL). Gentamicin appeared to be highly prone to interacting with EOs. Dual synergy (38.1% of cases) and PcEO additive/MaEO synergism (53.4%) were predominantly observed. On the contrary, usually, no interactions between enrofloxacin and EOs were observed (57.1%). Both commercial EOs were characterized by natural composition without artificial adulteration. Patchouli and tea tree oils can be good alternatives for treating severe cases of pyoderma in dogs, especially when dealing with multidrug-resistant strains.
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Affiliation(s)
- Małgorzata Anna Szewczuk
- Department of Monogastric Animal Sciences, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology in Szczecin, 29 Klemensa Janickiego, 71-270 Szczecin, Poland
| | - Sławomir Zych
- Laboratory of Chromatography and Mass Spectroscopy, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology in Szczecin, Klemensa Janickiego 29, 71-270 Szczecin, Poland
| | - Nicola Oster
- Department of Monogastric Animal Sciences, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology in Szczecin, 29 Klemensa Janickiego, 71-270 Szczecin, Poland
| | - Jolanta Karakulska
- Department of Microbiology and Biotechnology, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology in Szczecin, Piastów 45, 70-311 Szczecin, Poland
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14
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Determination of antibacterial and anti-biofilm potential of Kewda essential oil against Staphylococcus aureus and Klebsiella pneumoniae. Biologia (Bratisl) 2023. [DOI: 10.1007/s11756-023-01360-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
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15
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Phytochemical Composition and Insight into Antibacterial Potential of Origanum vulgare Essential Oil from Saudi Arabia Using In Vitro and In Silico Approaches. Processes (Basel) 2023. [DOI: 10.3390/pr11030650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023] Open
Abstract
In Saudi Arabia, Origanum vulgare is widely disseminated. In the present work, we used GC-MS analysis to identify the components of Origanum vulgare essential oil. The disc diffusion assay was used to assess the essential oil’s in vitro antibacterial efficacy against Gram-positive and Gram-negative Staphylococcus aureus and Escherichia coli. The antimicrobial efficacy against many microbial proteins, including tyrosyl-tRNA synthetase (TyrRS), DNA gyrase, and dihydrofolate reductase (DHFR), was further evaluated using molecular docking. Eighteen compounds were identified using GC-MS analysis, which constituted 99.81% of the total essential oil content. Terpinen-4-ol (34.3%), Beta-Terpineol (16.96%), 3-Epimoretenol (11.84%), and Alpha-Terpineol (3.86%) were the main substances identified. According to the antibacterial investigation, the inhibition zone against Staphylococcus aureus was 8 mm and 6 mm against Escherichia coli. High affinities were found between 3-Epimoretenol and tyrosyl-tRNA synthetase (TyrRS) and dihydrofolate reductase (DHFR) compared to positive controls (Clorobiocin, SCHEMBL2181345); the affinity values were −8.3 Kcal/mol and −9.2, respectively. The results of the present study indicate that Origanum vulgare essential oil can be used as a nutraceutical to treat infectious diseases.
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Orchard A, Moosa T, Motala N, Kamatou G, Viljoen A, van Vuuren S. Commercially Available Viola odorata Oil, Chemical Variability and Antimicrobial Activity. Molecules 2023; 28:molecules28041676. [PMID: 36838663 PMCID: PMC9958603 DOI: 10.3390/molecules28041676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/31/2023] [Accepted: 02/04/2023] [Indexed: 02/12/2023] Open
Abstract
Viola odorata L. oil is frequently recommended in the aromatherapeutic literature for treating respiratory, urinary, and skin infections; however, antimicrobial evidence is lacking. In addition, in aromatherapy, combinations of essential oils are predominantly utilized with the goal of achieving therapeutic synergy, yet no studies investigating the interaction of essential oil combinations with V. odorata oil exists. This study thus aimed to address these gaps by investigating the antimicrobial activity of three Viola odorata oil samples, sourced from different suppliers, independently and in combination with 20 different commercial essential oils, against micro-organisms involved in respiratory, skin, and urinary tract infections associated with global resistance trends. These pathogens include several of the ESKAPE pathogens (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa and Enterobacter spp.) The chemical profile of the oils was determined using gas chromatography coupled with mass spectrometry. The minimum inhibitory concentrations (MIC) were determined using the broth micro-dilution method. The interactive profiles for the combinations were assessed by calculating the fractional inhibitory concentration index (ΣFIC). The main compounds varied across the three samples, and included phenethyl alcohol, isopropyl myristate, 2-nonynoic acid, methyl ester, α-terpineol, α-cetone, and benzyl acetate. The V. odorata oil samples displayed overall poor antimicrobial activity when tested alone; however, the antimicrobial activity of the combinations resulted in 55 synergistic interactions where the combination with Santalum austrocaledonicum resulted in the lowest MIC values as low as 0.13 mg/mL. The frequency of the synergistic interactions predominantly occurred against Klebsiella pneumoniae, Pseudomonas aeruginosa, Acinetobacter baumannii, and Enterococcus faecium with noteworthy MIC values ranging from 0.25-1.00 mg/mL. This study also reports on the variability of V. odorata oils sold commercially. While this warrants caution, the antimicrobial benefit in combination provides an impetus for further studies to investigate the therapeutic potential.
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Affiliation(s)
- Ané Orchard
- Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2193, South Africa
| | - Tasneem Moosa
- Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2193, South Africa
| | - Nabeelah Motala
- Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2193, South Africa
| | - Guy Kamatou
- Department of Pharmaceutical Sciences, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria 0001, South Africa
| | - Alvaro Viljoen
- Department of Pharmaceutical Sciences, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria 0001, South Africa
- SAMRC Herbal Drugs Research Unit, Department of Pharmaceutical Sciences, Private Bag X680, Pretoria 0001, South Africa
| | - Sandy van Vuuren
- Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2193, South Africa
- Correspondence:
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17
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Iseppi R, Mariani M, Benvenuti S, Truzzi E, Messi P. Effects of Melaleuca alternifolia Chell (Tea Tree) and Eucalyptus globulus Labill. Essential Oils on Antibiotic-Resistant Bacterial Biofilms. Molecules 2023; 28:molecules28041671. [PMID: 36838657 PMCID: PMC9961662 DOI: 10.3390/molecules28041671] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 02/03/2023] [Accepted: 02/06/2023] [Indexed: 02/12/2023] Open
Abstract
In the present investigation, the anti-biofilm potential of two essential oils (EOs), Melaleuca alternifolia Chell (Tea-Tree) (TTO) and Eucalyptus globulus Labill. (EEO) was characterized and tested "in vitro" against both mature biofilms and biofilms in the process of formation, produced by strains belonging to three main categories of antibiotic resistant bacteria (ARB): Vancomycin-resistant enterococci (VRE), methicillin-resistant Staphylococcus aureus (MRSA) and broad-spectrum β-lactamase-producing Escherichia coli (ESBL). The study was carried out in 96-well microtiter-plates using EOs alone, in association with each other and in combination with antibiotics against both single and multi-species biofilm. The study demonstrated the ability of TTO and EEO to counteract the ARB strains in sessile form, with promising results in particular against the biofilm in formation. Mature biofilm by ESBL E. coli was the most sensitive in the results from the quantification study of viable cells performed in multi-species biofilms. Lastly, in all tests, carried out using TTO/EEO associations and EOs/antibiotic combinations, the synergistic effect which emerged from the FIC-index has been confirmed, and both the reduction of biofilm in formation, and the removal of mature structure was obtained at very low concentrations, with values from 4 to >512-fold lower than the minimum inhibitory concentration (MIC) of the single compounds.
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Affiliation(s)
- Ramona Iseppi
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 287, 41125 Modena, Italy
| | - Martina Mariani
- Burn Intensive Care Unit, Hospital A. Cardarelli, Via A. Cardarelli 9, 80131 Naples, Italy
| | - Stefania Benvenuti
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 287, 41125 Modena, Italy
| | - Eleonora Truzzi
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 287, 41125 Modena, Italy
| | - Patrizia Messi
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 287, 41125 Modena, Italy
- Correspondence:
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Nunes AKA, Araújo Malveira E, Lopes Andrade A, Barbosa da Silva WM, de Morais SM, Silva Dos Santos H, Cavalcanti de Albuquerque C, Holanda Teixeira E, do Nascimento Souza DN, Alves de Vasconcelos M. Chemical Composition Determination and Evaluation of the Antimicrobial Activity of Essential Oil from Croton blanchetianus (Euphorbiaceae) against Clinically Relevant Bacteria. Chem Biodivers 2023; 20:e202200777. [PMID: 36541751 DOI: 10.1002/cbdv.202200777] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Accepted: 12/05/2022] [Indexed: 12/24/2022]
Abstract
In this study, the chemical composition of the essential oil (EO) extracted from Croton blanchetianus Baill leaves was identified, and antimicrobial and antibiofilm activities against Staphylococcus aureus, Staphylococcus epidermidis, and Escherichia coli strains were determined. Moreover, the effects of EO in combination with ampicillin and tetracycline were investigated. Thirty-four components, mainly mono-and sesquiterpenes that represented 94.05 % of the chemical composition, were identified in the EO. The EO showed bacteriostatic and bactericidal activities against all strains tested. Furthermore, the EO showed a synergistic effect with ampicillin and tetracycline. EO significantly inhibited biofilm formation and reduced the number of viable cells in biofilms. The EO may be a promising natural product for preventing bacterial biofilm infections.
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Affiliation(s)
- Aluska Kelly A Nunes
- Faculdade de Ciências Exatas e Naturais, Universidade do Estado do Rio Grande do Norte, Mossoró, RN, Brazil
| | - Ellen Araújo Malveira
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Fortaleza, CE, Brazil
| | - Alexandre Lopes Andrade
- Laboratório Integrado de Biomoléculas, Departamento de Patologia e Medicina Legal, Universidade Federal do Ceará, Fortaleza, CE, Brazil
| | - Wildson Max Barbosa da Silva
- Universidade Estadual do Ceará, Centro de Ciência e Tecnologia, Programa de Pós-Graduação em Ciências Naturais, Fortaleza, CE, Brasil
| | - Selene Maia de Morais
- Universidade Estadual do Ceará, Centro de Ciência e Tecnologia, Programa de Pós-Graduação em Ciências Naturais, Fortaleza, CE, Brasil
| | - Hélcio Silva Dos Santos
- Laboratório Integrado de Biomoléculas, Departamento de Patologia e Medicina Legal, Universidade Federal do Ceará, Fortaleza, CE, Brazil.,Universidade Estadual do Vale do Acaraú, Centro de Ciências Exatas e Tecnologia, Sobral, CE, Brazil
| | | | - Edson Holanda Teixeira
- Laboratório Integrado de Biomoléculas, Departamento de Patologia e Medicina Legal, Universidade Federal do Ceará, Fortaleza, CE, Brazil
| | | | - Mayron Alves de Vasconcelos
- Faculdade de Ciências Exatas e Naturais, Universidade do Estado do Rio Grande do Norte, Mossoró, RN, Brazil.,Universidade do Estado de Minas Gerais, Unidade de Divinópolis, Divinópolis, MG, Brazil
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19
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Corona-Gómez L, Hernández-Andrade L, Mendoza-Elvira S, Suazo FM, Ricardo-González DI, Quintanar-Guerrero D. In vitro antimicrobial effect of essential tea tree oil( Melaleuca alternifolia), thymol, and carvacrol on microorganisms isolated from cases of bovine clinical mastitis. Int J Vet Sci Med 2022; 10:72-79. [PMID: 36259046 PMCID: PMC9543160 DOI: 10.1080/23144599.2022.2123082] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Both Gram-negative and Gram-positive bacteria have recently developed antibiotic resistance to treatments for bovine mastitis, creating a serious concern for public and animal health. The objective of this study was to analyse in vitro microbicidal activity of tea tree oil, thymol and carvacrol (composed of oregano and thyme essential oils) on bacteria isolated from clinical mastitis. Field isolates and ATCC strains of the Staphylococcus spp, Streptococcus spp, Escherichia coli, Klebsiella pneumoniae, and Candida albicans genera were analysed. The agar diffusion technique was used to test bactericidal susceptibility and plate microdilution was utilized to determine the minimum inhibitory, bactericidal, and fractional inhibitory concentrations. Thymol alone and the combinations of thymol-carvacrol and thymol-TTO obtained the highest inhibition diameters for Gram-negative bacteria, while for Gram-positive bacteria and C. albicans, thymol and the combination thymol-carvacrol obtained the highest indices. TTO, thymol, and carvacrol had MIC values of 1.56–25 mg/ml, 0.05–0.4 mg/ml, and 0.02–0.2 mg/ml, respectively. CMB results for the Gram-negative and gram-positive groups were 0.39–0.78 mg/ml, and for C. albicans, 0.78–1.56 mg/ml. Results for the fractional inhibitory concentrations show that the TTO+thymol and thymol+carvacrol combinations had additive activity against groups of Gram-negative bacteria and C. albicans. These natural components, evaluated individually and in combinations, have an effectiveness above 70%.
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Affiliation(s)
- Lysett Corona-Gómez
- Laboratorio de Posgrado en Tecnología Farmacéutica, FES-Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlán Izcalli, México
| | - Laura Hernández-Andrade
- Departamento de Bacteriología del Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad del Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Cuajimalpa de Morelos, Cuautitlán Izcalli, México
| | - Susana Mendoza-Elvira
- Laboratorio de Microbiología y Virología de las Enfermedades Respiratorias del Cerdo, FES-Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlán Izcalli
| | | | - Daniel Israel Ricardo-González
- Departamento de Rumiantes, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Coyoacán, México
| | - David Quintanar-Guerrero
- Laboratorio de Posgrado en Tecnología Farmacéutica, FES-Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlán Izcalli, México
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20
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First Evidence of a Combination of Terpinen-4-ol and α-Terpineol as a Promising Tool against ESKAPE Pathogens. Molecules 2022; 27:molecules27217472. [PMID: 36364298 PMCID: PMC9654757 DOI: 10.3390/molecules27217472] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 10/31/2022] [Accepted: 10/31/2022] [Indexed: 11/06/2022] Open
Abstract
Antimicrobial resistance is a major public health issue raising growing concern in the face of dwindling response options. It is therefore urgent to find new anti-infective molecules enabling us to fight effectively against ever more numerous bacterial infections caused by ever more antibiotic-resistant bacteria. In this quest for new antibacterials, essential oils (or compounds extracted from essential oils) appear to be a promising therapeutic option. In the present work, we investigate the potential antibacterial synergy between a combination of terpinen-4-ol and α-terpineol (10:1) compared to standard tea tree oil. The minimum inhibitory concentration (MIC) and the minimum bactericidal concentration (MBC) were determined. Then, time kill assays, in vitro cytotoxicity and bactericidal activity on latent bacteria (persisters) were investigated. Finally, an in silico study of the pharmacokinetic parameters of α-terpineol was also performed. Altogether, our data demonstrate that the combination of terpinen-4-ol and α-terpineol might be a precious weapon to address ESKAPE pathogens.
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Malaspina P, Papaianni M, Ranesi M, Polito F, Danna C, Aicardi P, Cornara L, Woo SL, De Feo V. Eucalyptus cinerea and E. nicholii by-Products as Source of Bioactive Compounds for Agricultural Applications. PLANTS (BASEL, SWITZERLAND) 2022; 11:2777. [PMID: 36297802 PMCID: PMC9609402 DOI: 10.3390/plants11202777] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/14/2022] [Accepted: 10/15/2022] [Indexed: 06/16/2023]
Abstract
The cultivation of different species of Eucalyptus has recently expanded in Liguria (Italy) due to the growing demand of the North European floricultural market. Eucalyptus tree branches are cut and selected for their quality, resulting in large amounts of waste biomass to be disposed of. The aim of our study was to evaluate the phytotoxic and antimicrobial activities of essential oils (EOs) from pruning wastes of E. cinerea (EC) and E. nicholii (EN), for potential applications in agriculture. Phytochemical analyses showed eucalyptol (1,8-cineole) as the major component in both EOs, but the EO yield of EN was higher than that of EC, in agreement with a significantly higher oil gland density on EN leaves. EOs from both species showed phytotoxicity on both weeds tested, but no significant inhibition on horticultural crop seed germination, except for Raphanus sativus. The EO from EC showed the strongest antibacterial activity, while the EO from EN showed the strongest antifungal activity. Concluding, EOs from Eucalyptus pruning may be used as possible alternatives to synthetic herbicides and pesticides, acting as antimicrobial and antifungal agents, thus representing a safe strategy for crop management programs.
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Affiliation(s)
- Paola Malaspina
- Department of Earth, Environment and Life Sciences, University of Genova, Corso Europa 26, 16132 Genova, Italy
| | - Marina Papaianni
- Department of Agricultural Sciences, University of Naples Federico II, Via Università 133, 80055 Portici, Italy
| | - Marta Ranesi
- Department of Agricultural Sciences, University of Naples Federico II, Via Università 133, 80055 Portici, Italy
| | - Flavio Polito
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy
| | - Cristina Danna
- Department of Earth, Environment and Life Sciences, University of Genova, Corso Europa 26, 16132 Genova, Italy
| | | | - Laura Cornara
- Department of Earth, Environment and Life Sciences, University of Genova, Corso Europa 26, 16132 Genova, Italy
| | - Sheridan L. Woo
- Department of Pharmacy, University of Naples Federico II, Via Domenico Montesano 49, 80131 Naples, Italy
| | - Vincenzo De Feo
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy
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Wang Y, Zhang Y, Song X, Fang C, Xing R, Liu L, Zhao X, Zou Y, Li L, Jia R, Ye G, Shi F, Zhou X, Zhang Y, Wan H, Wei Q, Yin Z. 1,8-Cineole inhibits biofilm formation and bacterial pathogenicity by suppressing luxS gene expression in Escherichia coli. Front Pharmacol 2022; 13:988245. [PMID: 36330093 PMCID: PMC9624193 DOI: 10.3389/fphar.2022.988245] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 09/26/2022] [Indexed: 10/19/2023] Open
Abstract
In recent years, with frequent reports of multi-drug resistant strains, bacteria antibiotic resistance has become an increasingly serious health problem worldwide. One of the most promising ways for combating bacterial infections and antibiotic resistance is development of quorum-sensing (QS) interfering drugs. In this study, the results show that 1,8-cineole inhibited the expression of QS as well as the virulence genes in Escherichia coli O101 (E. coli O101) with a 65% inhibition rate against luxS gene. Therefore, we hypothesized that 1,8-cineole may inhibit the biofilm formation and reduce the pathogenicity of E. coli O101 by inhibiting the expression of luxS gene. To confirm our hypotheses, a luxS gene deleted E. coli O101 was constructed. The results show that the biofilm formation, motility, structure and pathogenicity of E. coli O101 were significantly inhibited following deletion of the luxS gene. In addition, the transcript levels of QS and virulence genes of E. coli O101 were also significantly down-regulated. Interestingly, 1,8-cineole no longer had a significant inhibitory effect on the related phenotype and gene expression of E. coli O101 without luxS gene. In conclusion, the results show that 1,8-cineole can affect bacterial biofilm formation and pathogenicity by suppressing the expression of luxS gene in E. coli O101, which could provide a new perspective for dealing with the biofilm problem of pathogenic bacteria.
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Affiliation(s)
- Yiming Wang
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Yu Zhang
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Xu Song
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Chunlin Fang
- Chengdu Agricultural College, Chengdu, China
- Chengdu QianKun Veterinary Pharmaceutical Co., Ltd., Chengdu, China
| | - Rui Xing
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Lu Liu
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Xinghong Zhao
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Yuanfeng Zou
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Lixia Li
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Renyong Jia
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Gang Ye
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Fei Shi
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Xun Zhou
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Yingying Zhang
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Hongping Wan
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Qin Wei
- Sichuan Oil Cinnamon Engineering Technology Research Center, Yibin University, Yibin, China
| | - Zhongqiong Yin
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
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Terpinen-4-ol, the Main Bioactive Component of Tea Tree Oil, as an Innovative Antimicrobial Agent against Legionella pneumophila. Pathogens 2022; 11:pathogens11060682. [PMID: 35745536 PMCID: PMC9229490 DOI: 10.3390/pathogens11060682] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/08/2022] [Accepted: 06/10/2022] [Indexed: 12/04/2022] Open
Abstract
Legionella pneumophila (Lp), responsible for a severe pneumonia called Legionnaires’ disease, represents an important health burden in Europe. Prevention and control of Lp contamination in warm water systems is still a great challenge often due to the failure in disinfection procedures. The aim of this study was to evaluate the in vitro activity of Terpinen-4-ol (T-4-ol) as potential agent for Lp control, in comparison with the essential oil of Melaleuca alternifolia (tea tree) (TTO. Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC) of T-4-ol were determined by broth micro-dilution and a micro-atmosphere diffusion method to investigate the anti-Lp effects of T-4-ol and TTO vapors. Scanning Electron Microscopy (SEM) was adopted to highlight the morphological changes and Lp damage following T-4-ol and TTO treatments. The greatest antimicrobial activity against Lp was shown by T-4-ol with a MIC range of 0.06–0.125% v/v and MBC range of 0.25–0.5% v/v. The TTO and T-4-ol MIC and MBC decreased with increasing temperature (36 °C to 45 ± 1 °C), and temperature also significantly influenced the efficacy of TTO and T-4-ol vapors. The time-killing assay showed an exponential trend of T-4-ol bactericidal activity at 0.5% v/v against Lp. SEM observations revealed a concentration- and temperature- dependent effect of T-4-ol and TTO on cell surface morphology with alterations. These findings suggest that T-4-ol is active against Lp and further studies may address the potential effectiveness of T-4-ol for control of water systems.
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Antimicrobial, Multidrug Resistance Reversal and Biofilm Formation Inhibitory Effect of Origanum majorana Extracts, Essential Oil and Monoterpenes. PLANTS 2022; 11:plants11111432. [PMID: 35684205 PMCID: PMC9183178 DOI: 10.3390/plants11111432] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 05/23/2022] [Accepted: 05/26/2022] [Indexed: 12/12/2022]
Abstract
Origanum majorana L. is a widely used medicinal plant; its distilled oil and preparations are extensively utilised in the phytotherapy and food industries. The objective of this study is to evaluate the extracts and the essential oil (EO) of Origanum majorana L, and its monoterpenes for antimicrobial, bacterial multidrug resistance reversing, and biofilm formation inhibitory potency. The composition of EO and n-hexane extract was characterized by GC-MS. In the essential oil terpinen-4-ol (24.92%), trans-sabinene hydrate (25.18%), γ-terpinene (6.48%), cis-sabinene hydrate (5.44%), p-cymene (4.72%), sabinene (4.53%), α-terpineol (4.43%), and α-terpinene (3.00%) were found as the main constituents while trans-sabinene hydrate (1.43%), and terpinen-4-ol (0.19%) were detected in the n-hexane extract besides a series of hydrocarbons. The antibacterial activity of EO and terpinen-4-ol, α-terpinene, and linalool was also assessed against sensitive and drug-resistant S. aureus, and E. coli strains with MIC values of 0.125–0.250% and 30–61 µM, respectively. In the efflux pump (EP) inhibitory assay, made by the ethidium bromide accumulation method in E. coli ATCC 25922, and AG100 and S. aureus ATCC 25923, and MRSA ATCC 43300 strains, EO exhibited substantial activity, especially in the E. coli ATCC 25922 strain. Among the EO constituents, only sabinene was an EP inhibitor in sensitive Escherichia strain. In the case of S. aureus strains, EO and sabinene hydrate exhibited moderate potency on the drug-resistant phenotype. The antibiofilm effects of the samples were tested by crystal violet staining at sub-MIC concentration. γ-Terpinene, terpinen-4-ol, sabinene, sabinene hydrate and linalool were found to be effective inhibitors of biofilm formation (inhibition 36–86%) on E. coli ATCC 25922 and S. aureus MRSA ATCC 43300, while EO was ineffective on these strains. In contrast to this, biofilms formed by E. coli AG100 and S. aureus ATCC 25923 were significantly inhibited by the EO; however, it was not affected by any of the monoterpenes. This observation suggests that the antibiofilm effect might be altered by the synergism between the components of the essential oil.
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Swolana D, Wojtyczka RD. Activity of Silver Nanoparticles against Staphylococcus spp. Int J Mol Sci 2022; 23:ijms23084298. [PMID: 35457115 PMCID: PMC9028791 DOI: 10.3390/ijms23084298] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/11/2022] [Accepted: 04/12/2022] [Indexed: 12/20/2022] Open
Abstract
Staphylococcus epidermidis is a bacterium that is part of the human microbiota. It is most abundant on the skin, in the respiratory system and in the human digestive tract. Also, Staphylococcus aureus contributes to human infections and has a high mortality rate. Both of these bacterial species produce biofilm, a pathogenic factor increasing their resistance to antibiotics. For this reason, we are looking for new substances that can neutralize bacterial cells. One of the best-known substances with such effects are silver nanoparticles. They exhibited antibacterial and antibiofilm formation activity that depended on their size, shape and the concentration used. In this review, we presented the data related to the use of silver nanoparticles in counteracting bacterial growth and biofilm formation published in scientific papers between 2017 and 2021. Based on the review of experimental results, the properties of nanoparticles prompt the expansion of research on their activity.
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Borotová P, Galovičová L, Vukovic NL, Vukic M, Tvrdá E, Kačániová M. Chemical and Biological Characterization of Melaleuca alternifolia Essential Oil. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11040558. [PMID: 35214891 PMCID: PMC8880210 DOI: 10.3390/plants11040558] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/14/2022] [Accepted: 02/18/2022] [Indexed: 06/12/2023]
Abstract
The essential oil of Melaleuca alternifolia, commonly known as tea tree oil, has many beneficial properties due to its bioactive compounds. The aim of this research was to characterize the tea tree essential oil (TTEO) from Slovakia and its biological properties, which are specific to the chemical composition of essential oil. Gas chromatography/mass spectroscopy revealed that terpinen-4-ol was dominant with a content of 40.3%. γ-Terpinene, 1,8-cineole, and p-cymene were identified in contents of 11.7%, 7.0%, and 6.2%, respectively. Antioxidant activity was determined at 41.6% radical inhibition, which was equivalent to 447 μg Trolox to 1 mL sample. Antimicrobial activity was observed by the disk diffusion method against Gram-positive (G+), Gram-negative (G-) bacteria and against yeasts, where the best antimicrobial activity was against Enterococcus faecalis and Candida albicans with an inhibition zone of 10.67 mm. The minimum inhibitory concentration showed better susceptibility by G+ and G- planktonic cells, while yeast species and biofilm-forming bacteria strains were more resistant. Antibiofilm activity was observed against Pseudomonas fluorescens and Salmonella enterica by MALDI-TOF, where degradation of the protein spectra after the addition of essential oil was obtained. Good biological properties of tea tree essential oil allow its use in the food industry or in medicine as an antioxidant and antimicrobial agent.
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Affiliation(s)
- Petra Borotová
- AgroBioTech Research Centre, Slovak University of Agriculture, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia
- Faculty of Biotechnology and Food Sciences, Institute of Applied Biology, Slovak University of Agriculture, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia;
| | - Lucia Galovičová
- Faculty of Horticulture and Landscape Engineering, Institute of Horticulture, Slovak University of Agriculture, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia;
| | - Nenad L. Vukovic
- Department of Chemistry, Faculty of Science, University of Kragujevac, 34000 Kragujevac, Serbia; (N.L.V.); (M.V.)
| | - Milena Vukic
- Department of Chemistry, Faculty of Science, University of Kragujevac, 34000 Kragujevac, Serbia; (N.L.V.); (M.V.)
| | - Eva Tvrdá
- Faculty of Biotechnology and Food Sciences, Institute of Applied Biology, Slovak University of Agriculture, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia;
| | - Miroslava Kačániová
- Faculty of Horticulture and Landscape Engineering, Institute of Horticulture, Slovak University of Agriculture, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia;
- Department of Bioenergy, Food Technology and Microbiology, Institute of Food Technology and Nutrition, University of Rzeszow, 4 Zelwerowicza Str., 35-601 Rzeszow, Poland
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27
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Reduced-Pressure Process for Fabricating Tea Tree Oil-Polyvinylpyrrolidone Electrospun Fibers. Polymers (Basel) 2022; 14:polym14040743. [PMID: 35215664 PMCID: PMC8875683 DOI: 10.3390/polym14040743] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 02/04/2022] [Accepted: 02/09/2022] [Indexed: 02/01/2023] Open
Abstract
Electrospun fibers containing tea tree oil (TTO) can be explored for practical applications due to the antimicrobial and anti-inflammatory activities of TTO. Considering that there are potentially toxic components in TTO, it is necessary to eliminate or reduce its content in the preparation process of TTO-doped electrospun fibers. In this work, electrospun TTO-PVP (polyvinylpyrrolidone) fibers containing an 18.18 wt.% decreased content of 1,8-Cineole were successfully fabricated by intense evaporation of a self-made reduced-pressure electrospinning (RP-ES) setup (as low as 94.4 kPa). In addition, such intense evaporation led to a morphology change, where a typical average fiber diameter increased from 0.831 to 1.148 μm, fewer and smaller beads in fibers, along with a rougher and grooves fiber surface. These morphology changes allowed Terpinen-4-ol to remain in the fiber for a more extended period. In addition, RP-ES proved the possibility for intense evaporation and continuous vapor removal by continuously environmental vacuum pumping of electrospinning.
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Antibiofilm activity of glycolic acid and glyoxal and their diffusion–reaction interactions with biofilm components. Food Res Int 2022; 152:110921. [DOI: 10.1016/j.foodres.2021.110921] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 11/08/2021] [Accepted: 12/20/2021] [Indexed: 01/06/2023]
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Bencardino D, Amagliani G, Brandi G. Carriage of Staphylococcus aureus among food handlers: An ongoing challenge in public health. Food Control 2021. [DOI: 10.1016/j.foodcont.2021.108362] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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30
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Van HT, Thang TD, Luu TN, Doan VD. An overview of the chemical composition and biological activities of essential oils from Alpinia genus (Zingiberaceae). RSC Adv 2021; 11:37767-37783. [PMID: 35498079 PMCID: PMC9044187 DOI: 10.1039/d1ra07370b] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 11/05/2021] [Indexed: 11/21/2022] Open
Abstract
Alpinia Roxb. is the largest genus of the Zingiberaceae family. A large number of Alpinia species has been used as food and traditional medicines. Alpinia essential oils have been studied for their chemical profiles, in which 1,8-cineole, β-pinene, α-pinene, β-myrcene, camphor, γ-terpinene, p-cymene, geraniol, α-fenchyl acetate, ocimene, methyl cinnamate, and β-caryophyllene have been found to be the major compounds. Essential oils isolated from Alpinia plants have been reported to have antimicrobial, cytotoxic, antioxidant, anti-inflammatory, anti-asthmatic, tyrosinase inhibitory, insecticidal, and larvicidal activities and slimming aromatherapy. In this review, the comprehensive information regarding the volatile components of various Alpinia plants, the bioactivities of Alpinia essential oils and their major compounds are provided.
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Affiliation(s)
- Hong Thien Van
- Institute of Biotechnology and Food Technology, Industrial University of Ho Chi Minh City No. 12 Nguyen Van Bao Street, Ward 4, Go Vap District Ho Chi Minh City Vietnam
| | - Tran Dinh Thang
- Institute of Biotechnology and Food Technology, Industrial University of Ho Chi Minh City No. 12 Nguyen Van Bao Street, Ward 4, Go Vap District Ho Chi Minh City Vietnam
| | - Thao Nguyen Luu
- Institute of Biotechnology and Food Technology, Industrial University of Ho Chi Minh City No. 12 Nguyen Van Bao Street, Ward 4, Go Vap District Ho Chi Minh City Vietnam
| | - Van Dat Doan
- Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City No. 12 Nguyen Van Bao, Ward 4, Go Vap District Ho Chi Minh City Vietnam
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Cheng F, Mo Y, Chen K, Shang X, Yang Z, Hao B, Shang R, Liang J, Liu Y. Integration of metabolomics and transcriptomics indicates changes in MRSA exposed to terpinen-4-ol. BMC Microbiol 2021; 21:305. [PMID: 34736405 PMCID: PMC8566654 DOI: 10.1186/s12866-021-02348-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Accepted: 10/08/2021] [Indexed: 12/15/2022] Open
Abstract
Background This study investigated the effects of terpinen-4-ol on methicillin-resistant Staphylococcus aureus (MRSA) and its biofilm, and the possible mechanisms governing this effect. Results We observed that terpinen-4-ol has good antibacterial activity and inhibits the formation of MRSA biofilm. The MIC and MBC values for terpinen-4-ol against S. aureus were 0.08% ~ 0.32%. And terpinen-4-ol at 0.32% could kill all bacteria and clear all biofilms. Untargeted metabolomic and transcriptomic analyses showed that terpinen-4-ol strongly inhibited DNA and RNA biosynthesis in MRSA at 2 h after treatment by affecting genes and metabolites related to purine and pyrimidine metabolic pathways. Some differential genes which play important roles in DNA synthesis and the production of eDNA from biofilm exposed to terpinen-4-ol was also significantly decreased compared with that of the control. Conclusions Terpinen-4-ol has good antibacterial activity and significantly inhibits the formation of MRSA biofilm by inhibiting purine and pyrimidine metabolism.
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Affiliation(s)
- Feng Cheng
- Key Laboratory of New Animal Drug Project, Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agriculture Sciences, 730050, Lanzhou, People's Republic of China
| | - Yanan Mo
- Key Laboratory of New Animal Drug Project, Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agriculture Sciences, 730050, Lanzhou, People's Republic of China
| | - Keyuan Chen
- Key Laboratory of New Animal Drug Project, Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agriculture Sciences, 730050, Lanzhou, People's Republic of China
| | - Xiaofei Shang
- Key Laboratory of New Animal Drug Project, Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agriculture Sciences, 730050, Lanzhou, People's Republic of China
| | - Zhen Yang
- Key Laboratory of New Animal Drug Project, Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agriculture Sciences, 730050, Lanzhou, People's Republic of China
| | - Baocheng Hao
- Key Laboratory of New Animal Drug Project, Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agriculture Sciences, 730050, Lanzhou, People's Republic of China
| | - Ruofeng Shang
- Key Laboratory of New Animal Drug Project, Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agriculture Sciences, 730050, Lanzhou, People's Republic of China
| | | | - Yu Liu
- Key Laboratory of New Animal Drug Project, Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agriculture Sciences, 730050, Lanzhou, People's Republic of China.
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Santamarta S, Aldavero AC, Rojo MA. Essential oil of Cymbopogon martini, source of geraniol, as a potential antibacterial agent against Bacillus subtilis, a pathogen of the bakery industry. F1000Res 2021; 10:1027. [PMID: 36817513 PMCID: PMC9936101 DOI: 10.12688/f1000research.54196.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/29/2021] [Indexed: 11/20/2022] Open
Abstract
Background: Bacteria can adhere and grow on any surface due to their chemical and physical interaction, leading to the development of biofilms. Essential oils have a great potential for use in the food industry, as they can effectively prevent the presence of some pathogenic microorganisms. Species such as those in the Bacillus genus have the ability to produce toxins. Some strains of Bacillus subtilis have been related to cases of food-borne diseases. In the bakery industry, B. subtilis also has been related to "rope" disease, linked to bread preservation processes. Methods: The aim of the study was to analyse the antibacterial properties of 24 chemotyped essential oils against the growth of B. subtilis. The biological activity study was carried out using disk diffusion in agar and broth dilution methods. Results: The essential oil of Cymbopogon martinii var. motia had a high geraniol content (>80.53%) and showed a high antimicrobial effect against the Gram-positive bacterium B. subtilis. Binary combinations of Cymbopogon martinii var. motia oil with Eugenia caryophyllus showed antagonistic effects on B. subtilis. Conclusions: The essential oil of Cymbopogon martinii var. motia has an interesting potential use in the bakery industry as a preservative, in applications such as nano encapsulation for bakery doughs, active packaging of baked products, or surface disinfectants.
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Affiliation(s)
- Sara Santamarta
- Area of Enginering and technology, Miguel de Cervantes European University, Valladolid, Castilla y Leon, 47012, Spain
| | - A. Cristina Aldavero
- Area of Enginering and technology, Miguel de Cervantes European University, Valladolid, Castilla y Leon, 47012, Spain
| | - M Angeles Rojo
- Area of Experimental Sciences, Miguel de Cervantes European University, Valladolid, Castilla y Leon, 47012, Spain
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Santamarta S, Aldavero AC, Rojo MA. Essential oil of Cymbopogon martini, source of geraniol, as a potential antibacterial agent against Bacillus subtilis, a pathogen of the bakery industry. F1000Res 2021; 10:1027. [PMID: 36817513 PMCID: PMC9936101.2 DOI: 10.12688/f1000research.54196.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/22/2023] [Indexed: 03/26/2023] Open
Abstract
Background: Bacteria can adhere and grow on any surface due to their chemical and physical interaction, leading to the development of biofilms. Essential oils have a great potential for use in the food industry, as they can effectively prevent the presence of some pathogenic microorganisms. Species such as those in the Bacillus genus have the ability to produce toxins. Some strains of Bacillus subtilis have been related to cases of food-borne diseases. In the bakery industry, B. subtilis also has been related to "rope" disease, linked to bread preservation processes. Methods: The aim of the study was to analyse the antibacterial properties of 24 chemotyped essential oils against the growth of B. subtilis. The biological activity study was carried out using disk diffusion in agar and broth dilution methods. Results: The essential oil of Cymbopogon martinii var. motia had a high geraniol content (>80.53%) and showed a high antimicrobial effect against the Gram-positive bacterium B. subtilis. Binary combinations of Cymbopogon martinii var. motia oil with Eugenia caryophyllus showed antagonistic effects on B. subtilis. Conclusions: The essential oil of Cymbopogon martinii var. motia has an interesting potential use in the bakery industry as a preservative, in applications such as nano encapsulation for bakery doughs, active packaging of baked products, or surface disinfectants.
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Affiliation(s)
- Sara Santamarta
- Area of Enginering and technology, Miguel de Cervantes European University, Valladolid, Castilla y Leon, 47012, Spain
| | - A. Cristina Aldavero
- Area of Enginering and technology, Miguel de Cervantes European University, Valladolid, Castilla y Leon, 47012, Spain
| | - M Angeles Rojo
- Area of Experimental Sciences, Miguel de Cervantes European University, Valladolid/Spain, Castilla y Leon, 47012, Spain
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Ben Abdallah F, Lagha R, Gaber A. Biofilm Inhibition and Eradication Properties of Medicinal Plant Essential Oils against Methicillin-Resistant Staphylococcus aureus Clinical Isolates. Pharmaceuticals (Basel) 2020; 13:ph13110369. [PMID: 33171909 PMCID: PMC7694456 DOI: 10.3390/ph13110369] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 11/03/2020] [Accepted: 11/04/2020] [Indexed: 12/28/2022] Open
Abstract
Methicillin-resistant Staphylococcus aureus is a major human pathogen that poses a high risk to patients due to the development of biofilm. Biofilms, are complex biological systems difficult to treat by conventional antibiotic therapy, which contributes to >80% of humans infections. In this report, we examined the antibacterial activity of Origanum majorana, Rosmarinus officinalis, and Thymus zygis medicinal plant essential oils against MRSA clinical isolates using disc diffusion and MIC methods. Moreover, biofilm inhibition and eradication activities of oils were evaluated by crystal violet. Gas chromatography–mass spectrometry analysis revealed variations between oils in terms of component numbers in addition to their percentages. Antibacterial activity testing showed a strong effect of these oils against MRSA isolates, and T. zygis had the highest activity succeeded by O. majorana and R. officinalis. Investigated oils demonstrated high biofilm inhibition and eradication actions, with the percentage of inhibition ranging from 10.20 to 95.91%, and the percentage of eradication ranging from 12.65 to 98.01%. O. majorana oil had the highest biofilm inhibition and eradication activities. Accordingly, oils revealed powerful antibacterial and antibiofilm activities against MRSA isolates and could be a good alternative for antibiotics substitution.
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Affiliation(s)
- Fethi Ben Abdallah
- Department of Biology, College of Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia; (R.L.); (A.G.)
- Unité de Recherche, Virologie & Stratégies Antivirales, UR17ES30, Institut Supérieur de Biotechnologie, University of Monastir, Monastir 5000, Tunisia
- Correspondence:
| | - Rihab Lagha
- Department of Biology, College of Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia; (R.L.); (A.G.)
- Unité de Recherche, Virologie & Stratégies Antivirales, UR17ES30, Institut Supérieur de Biotechnologie, University of Monastir, Monastir 5000, Tunisia
| | - Ahmed Gaber
- Department of Biology, College of Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia; (R.L.); (A.G.)
- Department of Genetics, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
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Isoeugenol and Hybrid Acetamides against Candida albicans Isolated from the Oral Cavity. Pharmaceuticals (Basel) 2020; 13:ph13100291. [PMID: 33023068 PMCID: PMC7599878 DOI: 10.3390/ph13100291] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 08/31/2020] [Accepted: 09/01/2020] [Indexed: 12/31/2022] Open
Abstract
Isougenol is a phytoconstituent found in several essential oils. Since many natural products are potent antimicrobials, the synthesis of hybrid molecules-combining the chemical skeleton of the phytochemical with synthetic groups-can generate substances with enhanced biological activity. Based on this, the objective of this study was to evaluate the antifungal activity of isoeugenol and hybrid acetamides against Candida albicans isolated from the oral cavity. The methodologies used were the determination of minimum inhibitory concentration (MIC), minimum fungicidal concentration (MFC), action on fungal micromorphology, interaction test with nystatin by the checkerboard method and molecular docking study with important enzymes in the maintenance of fungal viability. The synthetic molecules did not demonstrate significant antifungal activity in vitro. The isoeugenol MIC and MFC varied between 128 and 256 µg/mL, being the phytoconstituent able to interfere in the formation of blastoconid and chlamydoconid structures, important in the pathogenic process of the species. The molecular docking study revealed that isoeugenol is a potential inhibitor of the enzymes 14-α-demethylase and delta-14-sterol reductase, interfering in the fungal cell membrane biosynthesis. Thus, this research provides clearer expectations for future pharmacological studies with isoeugenol and derived molecules, aiming at its therapeutic application against infections caused by Candida spp.
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