1
|
Drioiche A, Baammi S, Zibouh K, Al Kamaly O, Alnakhli AM, Remok F, Saidi S, Amaiach R, El Makhoukhi F, Elomri A, Zair T. A Study of the Synergistic Effects of Essential Oils from Origanum compactum and Origanum elongatum with Commercial Antibiotics against Highly Prioritized Multidrug-Resistant Bacteria for the World Health Organization. Metabolites 2024; 14:210. [PMID: 38668338 PMCID: PMC11051742 DOI: 10.3390/metabo14040210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 03/30/2024] [Accepted: 04/02/2024] [Indexed: 04/28/2024] Open
Abstract
The irrational use of antibiotics has favored the emergence of resistant bacteria, posing a serious threat to global health. To counteract antibiotic resistance, this research seeks to identify novel antimicrobials derived from essential oils that operate through several mechanisms. It aims to evaluate the quality and composition of essential oils from Origanum compactum and Origanum elongatum; test their antimicrobial activity against various strains; explore their synergies with commercial antibiotics; predict the efficacy, toxicity, and stability of compounds; and understand their molecular interactions through docking and dynamic simulations. The essential oils were extracted via hydrodistillation from the flowering tops of oregano in the Middle Atlas Mountains in Morocco. Gas chromatography combined with mass spectrometry (GC-MS) was used to examine their composition. Nine common antibiotics were chosen and tested alone or in combination with essential oils to discover synergistic effects against clinically important and resistant bacterial strains. A comprehensive in silico study was conducted, involving molecular docking and molecular dynamics simulations (MD). O. elongatum oil includes borneol (8.58%), p-cymene (42.56%), thymol (28.43%), and carvacrol (30.89%), whereas O. compactum oil is mostly composed of γ-terpinene (22.89%), p-cymene (15.84%), thymol (10.21%), and (E)-caryophyllene (3.63%). With O. compactum proving to be the most potent, these essential oils showed antibacterial action against both Gram-positive and Gram-negative bacteria. Certain antibiotics, including ciprofloxacin, ceftriaxone, amoxicillin, and ampicillin, have been shown to elicit synergistic effects. To fight resistant bacteria, the essential oils of O. compactum and O. elongatum, particularly those high in thymol and (E)-caryophyllene, seem promising when combined with antibiotics. These synergistic effects could result from their ability to target the same bacterial proteins or facilitate access to target sites, as suggested by molecular docking simulations. Molecular dynamics simulations validated the stability of the examined protein-ligand complexes, emphasizing the propensity of substances like thymol and (E)-caryophyllene for particular target proteins, opening the door to potentially effective new therapeutic approaches against pathogens resistant to multiple drugs.
Collapse
Affiliation(s)
- Aziz Drioiche
- Research Team of Chemistry of Bioactive Molecules and the Environment, Laboratory of Innovative Materials and Biotechnology of Natural Resources, Faculty of Sciences, Moulay Ismail University, B.P. 11201, Zitoune, Meknes 50070, Morocco; (K.Z.); (F.R.); (S.S.); (F.E.M.)
- Medical Microbiology Laboratory, Mohamed V. Hospital, Meknes 50000, Morocco
| | - Soukayna Baammi
- Bioinformatics Laboratory, College of Computing, Mohammed VI Polytechnic University, Ben Guerir 43150, Morocco;
| | - Khalid Zibouh
- Research Team of Chemistry of Bioactive Molecules and the Environment, Laboratory of Innovative Materials and Biotechnology of Natural Resources, Faculty of Sciences, Moulay Ismail University, B.P. 11201, Zitoune, Meknes 50070, Morocco; (K.Z.); (F.R.); (S.S.); (F.E.M.)
| | - Omkulthom Al Kamaly
- Department of Pharmaceutical Sciences, College of Pharmacy, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia; (O.A.K.); (A.M.A.)
| | - Anwar M. Alnakhli
- Department of Pharmaceutical Sciences, College of Pharmacy, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia; (O.A.K.); (A.M.A.)
| | - Firdaous Remok
- Research Team of Chemistry of Bioactive Molecules and the Environment, Laboratory of Innovative Materials and Biotechnology of Natural Resources, Faculty of Sciences, Moulay Ismail University, B.P. 11201, Zitoune, Meknes 50070, Morocco; (K.Z.); (F.R.); (S.S.); (F.E.M.)
| | - Soukaina Saidi
- Research Team of Chemistry of Bioactive Molecules and the Environment, Laboratory of Innovative Materials and Biotechnology of Natural Resources, Faculty of Sciences, Moulay Ismail University, B.P. 11201, Zitoune, Meknes 50070, Morocco; (K.Z.); (F.R.); (S.S.); (F.E.M.)
| | - Rachid Amaiach
- Laboratory of Materials, Processes, Catalysis and Environment, School of Technology, University Sidi Mohamed Ben Abdellah, Fez 30000, Morocco;
| | - Fadoua El Makhoukhi
- Research Team of Chemistry of Bioactive Molecules and the Environment, Laboratory of Innovative Materials and Biotechnology of Natural Resources, Faculty of Sciences, Moulay Ismail University, B.P. 11201, Zitoune, Meknes 50070, Morocco; (K.Z.); (F.R.); (S.S.); (F.E.M.)
| | - Abdelhakim Elomri
- UNIROUEN, INSA Rouen, CNRS, COBRA (UMR 6014), Normandie University, 76000 Rouen, France;
| | - Touriya Zair
- Research Team of Chemistry of Bioactive Molecules and the Environment, Laboratory of Innovative Materials and Biotechnology of Natural Resources, Faculty of Sciences, Moulay Ismail University, B.P. 11201, Zitoune, Meknes 50070, Morocco; (K.Z.); (F.R.); (S.S.); (F.E.M.)
| |
Collapse
|
2
|
Silva RA, da Silva BF, Pereira MS, Coelho PAT, Costa RA, Chaves AC, Silva IGN, Carneiro VA. Combinatorial effects between aromatic plant compounds and chlorhexidine digluconate against canine otitis-related Staphylococcus spp. Res Vet Sci 2024; 170:105182. [PMID: 38377791 DOI: 10.1016/j.rvsc.2024.105182] [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: 11/08/2023] [Revised: 01/22/2024] [Accepted: 02/11/2024] [Indexed: 02/22/2024]
Abstract
The increasing prevalence of antimicrobial resistance among bacterial pathogens necessitates novel treatment strategies, particularly in veterinary medicine where otitis in dogs is very common in small animals' clinical routines. Considering this challenge, this study explores the efficacy of aromatic plant compounds (APC), including eugenol (EUG), trans-cinnamaldehyde (TC), and geraniol (GER), and their synergistic potential when combined with the antiseptic agent chlorhexidine (CLX), offering insight into alternative therapeutic approaches. The disk diffusion assay revealed differential sensitivity of Staphylococcus spp. strains to the tested compounds, with EUG and GER showing moderate inhibition zones and TC displaying considerably larger inhibition zones. Further analysis through MIC and MBC determinations suggested that EUG required the highest concentrations to inhibit and kill the bacteria, whereas TC and GER were effective at lower concentrations. Combined with CLX, all three plant-derived compounds demonstrated a significant enhancement of antibacterial activity, indicated by reduced MIC values and a predominantly synergistic interaction across the strains tested. GER was the most potent in combination with CLX, presenting the lowest mean FICi values and the highest fold reductions in MIC. This study emphasizes the APC's potential as an adjunct to conventional antimicrobial agents like CLX. The marked synergy observed, especially with GER, suggests that such combinations could be promising alternatives in managing bacterial otitis in dogs, potentially mitigating the impact of antibiotic resistance.
Collapse
Affiliation(s)
- Romério Alves Silva
- Veterinary Sciences Department of State University of Ceará, Campus Itaperi, Fortaleza 60714-903, Ceará, Brazil
| | - Benise Ferreira da Silva
- Center for Bioprospecting and Applied Molecular Experimentation (NUBEM), Laboratory of Biofilms and Antimicrobial Agents (LaBAM), University Center INTA - UNINTA, Sobral 62.050-100, Brazil
| | - Mainara Saraiva Pereira
- Center for Bioprospecting and Applied Molecular Experimentation (NUBEM), Laboratory of Biofilms and Antimicrobial Agents (LaBAM), University Center INTA - UNINTA, Sobral 62.050-100, Brazil
| | - Paulo Adenes Teixeira Coelho
- Center for Bioprospecting and Applied Molecular Experimentation (NUBEM), Laboratory of Biofilms and Antimicrobial Agents (LaBAM), University Center INTA - UNINTA, Sobral 62.050-100, Brazil
| | - Renata Albuquerque Costa
- Center for Bioprospecting and Applied Molecular Experimentation (NUBEM), Laboratory of Biofilms and Antimicrobial Agents (LaBAM), University Center INTA - UNINTA, Sobral 62.050-100, Brazil
| | - Andrey Carvalho Chaves
- Veterinary Sciences Department of State University of Ceará, Campus Itaperi, Fortaleza 60714-903, Ceará, Brazil
| | - Isaac Goes Neto Silva
- Veterinary Sciences Department of State University of Ceará, Campus Itaperi, Fortaleza 60714-903, Ceará, Brazil
| | - Victor Alves Carneiro
- Center for Bioprospecting and Applied Molecular Experimentation (NUBEM), Laboratory of Biofilms and Antimicrobial Agents (LaBAM), University Center INTA - UNINTA, Sobral 62.050-100, Brazil.
| |
Collapse
|
3
|
Septama AW, Yuandani Y, Khairunnisa NA, Nasution HR, Utami DS, Kristiana R, Jantan I. Antibacterial, bacteriolytic, antibiofilm, and synergistic effects of the peel oils of Citrus microcarpa and Citrus x amblycarpa with tetracycline against foodborne Escherichia coli. Lett Appl Microbiol 2023; 76:ovad126. [PMID: 37898554 DOI: 10.1093/lambio/ovad126] [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: 09/08/2023] [Revised: 10/19/2023] [Accepted: 10/27/2023] [Indexed: 10/30/2023]
Abstract
Citrus essential oils (EOs) have shown significant antibacterial activity. The present study was undertaken to evaluate the antibacterial activity of the peel oils of Citrus microcarpa and C. x amblycarpa against Escherichia coli. The minimum inhibition concentration (MIC) was determined by using the broth microdilution assay. The checkerboard method was used to identify synergistic effects of the EOs with tetracycline, while bacteriolysis was assessed by calculating the optical density of the bacterial supernatant, crystal violet assay was used to assess their antibiofilm. Ethidium bromide accumulation test was employed to assess efflux pump inhibition. Electron microscope analysis was performed to observe its morphological changes. The EOs of C. microcarpa and C. x amblycarpa were found to contain D-limonene major compound at 55.78% and 46.7%, respectively. Citrus microcarpa EOs exhibited moderate antibacterial against E. coli with a MIC value of 200 μg/mL. The combination of C. microcarpa oil (7.8 μg/mL) and tetracycline (62.5 μg/mL) exhibited a synergy with FICI of 0.5. This combination inhibited biofilm formation and disrupt bacterial cell membranes. Citrus microcarpa EOs blocked the efflux pumps in E. coli. Citrus microcarpa EOs demonstrated promising antibacterial activity, which can be further explored for the development of drugs to combat E. coli.
Collapse
Affiliation(s)
- Abdi W Septama
- Research Center for Pharmaceutical Ingredient and Traditional Medicine, National Research and Innovation Agency (BRIN), Kawasan PUSPIPTEK Serpong, Tangerang Selatan, Banten 15314, Indonesia
| | - Yuandani Yuandani
- Department of Pharmacology, Faculty of Pharmacy, Universitas Sumatera Utara, Medan, Indonesia
| | - Nur A Khairunnisa
- Department of Pharmacology, Faculty of Pharmacy, Universitas Sumatera Utara, Medan, Indonesia
| | - Halimah R Nasution
- Department of Pharmacology, Faculty of Pharmacy, Universitas Sumatera Utara, Medan, Indonesia
| | - Dinda S Utami
- Department of Pharmacology, Faculty of Pharmacy, Universitas Sumatera Utara, Medan, Indonesia
| | - Rhesi Kristiana
- Marine Education and Research Organisation (MERO) Foundation. Br. Dinas Muntig, Kara 80853ngasem, Bali , Indonesia
| | - Ibrahim Jantan
- Institute of Systems Biology (INBIOSIS), Universiti Kebangsaan Malaysia, Bangi, Malaysia
| |
Collapse
|
4
|
Xiao G, Li J, Sun Z. The Combination of Antibiotic and Non-Antibiotic Compounds Improves Antibiotic Efficacy against Multidrug-Resistant Bacteria. Int J Mol Sci 2023; 24:15493. [PMID: 37895172 PMCID: PMC10607837 DOI: 10.3390/ijms242015493] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 10/19/2023] [Accepted: 10/21/2023] [Indexed: 10/29/2023] Open
Abstract
Bacterial antibiotic resistance, especially the emergence of multidrug-resistant (MDR) strains, urgently requires the development of effective treatment strategies. It is always of interest to delve into the mechanisms of resistance to current antibiotics and target them to promote the efficacy of existing antibiotics. In recent years, non-antibiotic compounds have played an important auxiliary role in improving the efficacy of antibiotics and promoting the treatment of drug-resistant bacteria. The combination of non-antibiotic compounds with antibiotics is considered a promising strategy against MDR bacteria. In this review, we first briefly summarize the main resistance mechanisms of current antibiotics. In addition, we propose several strategies to enhance antibiotic action based on resistance mechanisms. Then, the research progress of non-antibiotic compounds that can promote antibiotic-resistant bacteria through different mechanisms in recent years is also summarized. Finally, the development prospects and challenges of these non-antibiotic compounds in combination with antibiotics are discussed.
Collapse
Affiliation(s)
| | | | - Zhiliang Sun
- College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China; (G.X.); (J.L.)
| |
Collapse
|
5
|
Silva SL, Araújo FSM, Silva POA, Silva EVA, Bezerra MMSL, Diniz AF, Oliveira DM, Jesus HO, Nascimento Junior BB, Medeiros LADM, Oliveira Filho AA. Evaluation of the antimicrobial effect of the Origanum vulgare L essential oil on strains of Klebsiella pneumoniae. BRAZ J BIOL 2023; 83:e269317. [PMID: 36722663 DOI: 10.1590/1519-6984.269317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 12/30/2022] [Indexed: 01/28/2023] Open
Abstract
Bacteria may be the initial cause of certain pathologies as well as a secondary agent responsible for the development of complications such as pressure ulcer infections. Pressure ulcers are a persistent health problem, especially in immunocompromised patients, and associated with infection by opportunistic microorganisms with antimicrobial resistance, such as Klebsiella pneumoniae, highlight the need for the development of new antimicrobial approaches. Thus, the aim of this study was to evaluate the antibacterial and anti-adherent activity of Origanum vulgare L. (oregano) essential oil against Klebsiella pneumoniae strains, as well as the effect of its association with synthetic antimicrobials. To this end, the Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC) analyses were performed on microdilution plates. The assay of the Minimum Inhibitory Adherence Concentration (MIAC), with test tubes. As well as, the association study through the infusion disc method containing ampicillin (AMP), gentamicin (GEN), ciprofloxacin (CIP) and ceftriaxone (CEF). Therefore, it was possible to obtain that the essential oil of oregano presents antimicrobial and bactericidal activity, with MIC ranging between 128μg/mL and 256 μg/mL and MBC between 256 μg/mL and 512 μg/mL, on the tested K. pneumoniae strains. When used in association with ampicillin and gentamicin, oregano essential oil showed synergistic effect for some strains. Therefore, it is observed that the tested essential oil can act as a promising antibacterial in the treatment of diseases caused by K. pneumoniae.
Collapse
Affiliation(s)
- S L Silva
- Universidade Federal da Paraíba - UFPB, Programa de Pós-graduação em Desenvolvimento e Inovação Tecnológica em Medicamentos - PPgDITM, João Pessoa, PB, Brasil
| | - F S M Araújo
- Universidade Federal de Campina Grande - UFCG, Centro de Saúde e Tecnologia Rural, Departamento de Odontologia, Patos, PB, Brasil
| | - P O A Silva
- Universidade Federal de Campina Grande - UFCG, Centro de Saúde e Tecnologia Rural, Departamento de Odontologia, Patos, PB, Brasil
| | - E V A Silva
- Universidade Federal de Campina Grande - UFCG, Centro de Saúde e Tecnologia Rural, Departamento de Odontologia, Patos, PB, Brasil
| | - M M S L Bezerra
- Universidade Federal de Campina Grande - UFCG, Centro de Saúde e Tecnologia Rural, Departamento de Odontologia, Patos, PB, Brasil
| | - A F Diniz
- Universidade Federal de Campina Grande-UFCG, Centro de Saúde e Tecnologia Rural, Programa de Pós-graduação em Ciência e Saúde Animal, Patos, PB, Brasil
| | - D M Oliveira
- Universidade Estadual do Sudoeste da Bahia - UESB, Programa de Pós-graduação em Química - PGQUIM, Jequié, BA, Brasil
| | - H O Jesus
- Universidade Estadual do Sudoeste da Bahia - UESB, Programa de Pós-graduação em Química - PGQUIM, Jequié, BA, Brasil
| | - B B Nascimento Junior
- Universidade Estadual do Sudoeste da Bahia - UESB, Programa de Pós-graduação em Química - PGQUIM, Jequié, BA, Brasil
| | - L A D M Medeiros
- Universidade Federal de Campina Grande - UFCG, Centro de Saúde e Tecnologia Rural, Departamento de Odontologia, Patos, PB, Brasil
| | - A A Oliveira Filho
- Universidade Federal da Paraíba - UFPB, Programa de Pós-graduação em Desenvolvimento e Inovação Tecnológica em Medicamentos - PPgDITM, João Pessoa, PB, Brasil
| |
Collapse
|
6
|
Beyond the Bark: An Overview of the Chemistry and Biological Activities of Selected Bark Essential Oils. Molecules 2022; 27:molecules27217295. [PMID: 36364121 PMCID: PMC9654741 DOI: 10.3390/molecules27217295] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/23/2022] [Accepted: 10/25/2022] [Indexed: 11/17/2022] Open
Abstract
Essential oils have been used by indigenous peoples for medicinal purposes since ancient times. Their easy availability played an important role. Even today, essential oils are used in various fields—be it as aromatic substances in the food industry, as an aid in antibiotic therapy, in aromatherapy, in various household products or in cosmetics. The benefits they bring to the body and health are proven by many sources. Due to their complex composition, they offer properties that will be used more and more in the future. Synergistic effects of various components in an essential oil are also part of the reason for their effectiveness. Infectious diseases will always recur, so it is important to find active ingredients for different therapies or new research approaches. Essential oils extracted from the bark of trees have not been researched as extensively as from other plant components. Therefore, this review will focus on bringing together previous research on selected bark oils to provide an overview of barks that are economically, medicinally, and ethnopharmaceutically relevant. The bark oils described are Cinnamomum verum, Cedrelopsis grevei, Drypetes gossweileri, Cryptocarya massoy, Vanillosmopsis arborea and Cedrus deodara. Literature from various databases, such as Scifinder, Scopus, Google Scholar, and PubMed, among others, were used.
Collapse
|
7
|
de Oliveira Braz AV, Rodrigues MC, Maia PAA, Pereira APD, de Lima Silva J, dos Santos FAV, da Silva LE, do Amaral W, dos Santos ML, Coutinho HDM, Baj T, Kowalska G, Kowalski R, Matias EFF. GC-MS Chemical Characterization and Antibacterial Effect of the Essential oil of Piper mosenii. Molecules 2022; 27:5911. [PMID: 36144647 PMCID: PMC9505588 DOI: 10.3390/molecules27185911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 09/03/2022] [Accepted: 09/07/2022] [Indexed: 11/17/2022] Open
Abstract
Commercialized mouthwashes are generally expensive for the most financially vulnerable populations. Thus, several studies evaluate the antimicrobial potential of herbal products, such as essential oils, to reduce the activity of microorganisms in the mouth. The objective of this research was to carry out the chemical characterization and antibacterial activity of the essential oil of Piper mosenii (EOPm), providing data that enable the development of a low-cost mouthwash formulation aimed at vulnerable communities. The analysis of the antibacterial potential and modulator of bacterial resistance was verified by the microdilution method to determine the minimum inhibitory concentration-MIC. The chemical components were characterized by gas chromatography coupled to mass spectrometry, where 23 chemical constituents were detected, with α-pinene, being the major compound. The EOPm showed a MIC ≥ 1024 µg/mL for all bacterial strains used in the tests. When the EOPm modulating activity was evaluated together with chlorhexidine, mouthwash and antibiotics against bacterial resistance, the oil showed a significant synergistic effect, reducing the MIC of the products tested in combination, in percentages between 20.6% to 96.3%. Therefore, it is recommended to expand the tests with greater variation of EOPm concentration and the products used in this research, in addition to the evaluation of toxicity and in vivo tests, seeking the development of a possible formulation of mouthwash accessible to the vulnerable population.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Luiz Everson da Silva
- Research Laboratory of Natural Products, Federal University of Paraná—UFPR, Matinhos 80060-000, Paraná, Brazil
| | - Wanderley do Amaral
- Research Laboratory of Natural Products, Federal University of Paraná—UFPR, Matinhos 80060-000, Paraná, Brazil
| | - Maura Lins dos Santos
- Research Laboratory of Natural Products, Federal University of Paraná—UFPR, Matinhos 80060-000, Paraná, Brazil
| | | | - Tomasz Baj
- Department of Pharmacognosy with the Medicinal Plant Garden, Medical University of Lublin, 1 Chodźki Str., 20-093 Lublin, Poland
| | - Grażyna Kowalska
- Department of Tourism and Recreation, University of Life Sciences in Lublin, 15 Akademicka Str., 20-950 Lublin, Poland
| | - Radosław Kowalski
- Department of Analysis and Food Quality Assessment, University of Life Sciences in Lublin, 8 Skromna Str., 20-704 Lublin, Poland
| | | |
Collapse
|
8
|
Wesseling CJ, Martin NI. Synergy by Perturbing the Gram-Negative Outer Membrane: Opening the Door for Gram-Positive Specific Antibiotics. ACS Infect Dis 2022; 8:1731-1757. [PMID: 35946799 PMCID: PMC9469101 DOI: 10.1021/acsinfecdis.2c00193] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
New approaches to target antibacterial agents toward Gram-negative bacteria are key, given the rise of antibiotic resistance. Since the discovery of polymyxin B nonapeptide as a potent Gram-negative outer membrane (OM)-permeabilizing synergist in the early 1980s, a vast amount of literature on such synergists has been published. This Review addresses a range of peptide-based and small organic compounds that disrupt the OM to elicit a synergistic effect with antibiotics that are otherwise inactive toward Gram-negative bacteria, with synergy defined as a fractional inhibitory concentration index (FICI) of <0.5. Another requirement for the inclusion of the synergists here covered is their potentiation of a specific set of clinically used antibiotics: erythromycin, rifampicin, novobiocin, or vancomycin. In addition, we have focused on those synergists with reported activity against Gram-negative members of the ESKAPE family of pathogens namely, Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, and/or Acinetobacter baumannii. In cases where the FICI values were not directly reported in the primary literature but could be calculated from the published data, we have done so, allowing for more direct comparison of potency with other synergists. We also address the hemolytic activity of the various OM-disrupting synergists reported in the literature, an effect that is often downplayed but is of key importance in assessing the selectivity of such compounds for Gram-negative bacteria.
Collapse
|
9
|
Bassyouni RH, Kamel Z, Algameel AA, Ismail G, Gaber SN. In-vitro determination of antimicrobial activities of Eruca sativa seed oil against antibiotic-resistant gram-negative clinical isolates from neonates: a future prospect. BMC Complement Med Ther 2022; 22:229. [PMID: 36030221 PMCID: PMC9419330 DOI: 10.1186/s12906-022-03710-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 08/19/2022] [Indexed: 11/25/2022] Open
Abstract
Background The aim of this study is investigate the antimicrobial effect of plant oils against bacterial strains isolated from neonatal asymptomatic bacteriuria (ABU) and to evaluate the antiseptic effect of the most potent one. Methods The antimicrobial effect of 17 plant oils were tested against 15- gram-negative bacterial strains recovered from cases of neonatal ABU (11 Escherichia. coli, 3 Klebsiella pneumonia, and 1 Pseudomonas aeruginosa) using the agar well diffusion method. The micro-dilution method was performed to investigate the minimum inhibitory concentrations (MIC) and the minimum bactericidal concentrations (MBC) in concentrations ranging from 1.95 μg/ml to 500 μg/ml. The evaluation of the antiseptic activity of the Eruca sativa (arugula) seed oil was investigated using time-kill assay in concentrations ranging from 50 μg/ml to 0.195 μg/ml. Results All tested oils showed variable antimicrobial activities against the tested strains. Arugula, wheat germ, cinnamon, parsley, dill, and onion oils were the most active oils. Among them, arugula oil was the most active oil with MIC50 and MIC90 were 3.9 μg/ml and 31.3 μg/ml respectively. MBC50 and MBC90 of arugula oil were 15.6 μg/ml and 125μg/ml respectively. The time-kill assay of arugula oil indicated that a concentration of 100 μg/ml completely killed nine of the tested strains after 10 min and reduced the CFU/ml of the rest of the strains by 3 log10 at the same time interval. Conclusion Arugula seed oil could be a potentially used as an antiseptic especially for neonates.
Collapse
|
10
|
Akhmouch AA, Hriouech S, Mzabi A, Tanghort M, Chefchaou H, Remmal A, Chami N. Synergistic Action of AMX Associated with 1,8-Cineole and Its Effect on the ESBL Enzymatic Resistance Mechanism. Antibiotics (Basel) 2022; 11:antibiotics11081002. [PMID: 35892393 PMCID: PMC9331605 DOI: 10.3390/antibiotics11081002] [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: 06/17/2022] [Revised: 07/06/2022] [Accepted: 07/11/2022] [Indexed: 02/05/2023] Open
Abstract
The purpose of the present study is twofold. First, it aims to evaluate the synergistic action of the ß-lactam antibiotic; AMX is associated with 1,8-cineole on six clinical isolates of ESBL-producing Escherichia coli and Klebsiella pneumoniae strains. Second, it aims to determine the effect this association has on the ESBL enzymatic resistance mechanism. The synergistic action of AMX/1,8-cineole was evaluated using partial inhibitory concentrations (PIC), determined by a microplate, a checkerboard and time-kill assays. The effect of AMX/1,8-cineole associations on the ESBL enzymatic resistance mechanism was evaluated using a new optimized enzymatic assay. This assay was based on the determination of the AMX antibacterial activity when combined with 1,8-cineole (at subinhibitory concentrations) in the presence or absence of the ß-lactamase enzyme toward a sensitive E. coli strain. The results of both checkerboard and time-kill assays showed a strong synergistic action between AMX and 1,8-cineole. The results of the enzymatic assay showed that the combination of AMX with 1,8-cineole notably influences the enzymatic resistance of the reaction by decreasing the affinity of the β-lactam antibiotic, AMX, to the β-lactamase enzyme. All obtained results suggested that the AMX/1,8-cineole association could be employed in therapy to overcome bacterial resistance to AMX while reducing the prevalence of resistance.
Collapse
|
11
|
Nawirska-Olszańska A, Zaczyńska E, Czarny A, Kolniak-Ostek J. Chemical Characteristics of Ethanol and Water Extracts of Black Alder ( Alnus glutinosa L.) Acorns and Their Antibacterial, Anti-Fungal and Antitumor Properties. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27092804. [PMID: 35566154 PMCID: PMC9105167 DOI: 10.3390/molecules27092804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 04/22/2022] [Accepted: 04/26/2022] [Indexed: 11/29/2022]
Abstract
The aim of this study was to identify polyphenolic compounds contained in ethanol and water extracts of black alder (Alnus glutinosa L.) acorns and evaluate their anti-cancer and antimicrobial effects. The significant anti-cancer potential on the human skin epidermoid carcinoma cell line A431 and the human epithelial cell line A549 derived from lung carcinoma tissue was observed. Aqueous and ethanolic extracts of alder acorns inhibited the growth of mainly Gram-positive microorganisms (Staphylococcus aureus, Bacillus subtilis, Streptococcus mutans) and yeast-like fungi (Candida albicans, Candida glabrata), as well as Gram-negative (Escherichia coli, Citrobacter freundii, Proteus mirabilis, Pseudomonas aeruginosa) strains. The identification of polyphenols was carried out using an ACQUITY UPLC-PDA-MS system. The extracts were composed of 29 compounds belonging to phenolic acids, flavonols, ellagitannins and ellagic acid derivatives. Ellagitannins were identified as the predominant phenolics in ethanol and aqueous extract (2171.90 and 1593.13 mg/100 g DM, respectively) The results may explain the use of A. glutinosa extracts in folk medicine.
Collapse
Affiliation(s)
- Agnieszka Nawirska-Olszańska
- Department of Fruit, Vegetable and Plant Nutraceutical Technology, Wrocław University of Environmental and Life Sciences, 37 Chelmonskiego Street, 51-630 Wroclaw, Poland;
| | - Ewa Zaczyńska
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 12 R. Weigla Street, 53-114 Wroclaw, Poland; (E.Z.); (A.C.)
| | - Anna Czarny
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 12 R. Weigla Street, 53-114 Wroclaw, Poland; (E.Z.); (A.C.)
| | - Joanna Kolniak-Ostek
- Department of Fruit, Vegetable and Plant Nutraceutical Technology, Wrocław University of Environmental and Life Sciences, 37 Chelmonskiego Street, 51-630 Wroclaw, Poland;
- Correspondence:
| |
Collapse
|
12
|
Ben-Khalifa R, Gaspar FB, Pereira C, Chekir-Ghedira L, Rodríguez-Rojo S. Essential Oil and Hydrophilic Antibiotic Co-Encapsulation in Multiple Lipid Nanoparticles: Proof of Concept and In Vitro Activity against Pseudomonas aeruginosa. Antibiotics (Basel) 2021; 10:1300. [PMID: 34827238 PMCID: PMC8614727 DOI: 10.3390/antibiotics10111300] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/20/2021] [Accepted: 10/22/2021] [Indexed: 12/22/2022] Open
Abstract
In the worldwide context of an impending emergence of multidrug-resistant bacteria, this research combined the advantages of multiple lipid nanoparticles (MLNs) and the promising therapeutic use of essential oils (EOs) as a strategy to fight the antibiotic resistance of three Pseudomonas aeruginosa strains with different cefepime (FEP) resistance profiles. MLNs were prepared by ultrasonication using glyceryl trioleate (GTO) and glyceryl tristearate (GTS) as a liquid and a solid lipid, respectively. Rosemary EO (REO) was selected as the model EO. REO/FEP-loaded MLNs were characterized by their small size (~110 nm), important encapsulation efficiency, and high physical stability over time (60 days). An assessment of the antimicrobial activity was performed using antimicrobial susceptibility testing assays against selected P. aeruginosa strains. The assays showed a considerable increase in the antibacterial property of REO-loaded MLNs compared with the effect of crude EO, especially against P. aeruginosa ATCC 9027, in which the minimum inhibitory concentration (MIC) value decreased from 80 to 0.6 mg/mL upon encapsulation. Furthermore, the incorporation of FEP in MLNs stabilized the drug without affecting its antipseudomonal activity. Thus, the ability to co-encapsulate an essential oil and a hydrophilic antibiotic into MLN has been successfully proved, opening new possibilities for the treatment of serious antimicrobial infections.
Collapse
Affiliation(s)
- Rayhane Ben-Khalifa
- Unit of Natural Bioactive Substances and Biotechnology UR17ES49, Faculty of Dental Medicine, University of Monastir, Monastir 5000, Tunisia; (R.B.-K.); (L.C.-G.)
- Research Institute on Bioeconomy (BioEcoUVa), High Pressure Processes Group, School of Industrial Engineering, University of Valladolid, 47011 Valladolid, Spain
| | - Frédéric Bustos Gaspar
- iBET—Instituto de Biologia Experimental e Tecnológica, 2781-901 Oeiras, Portugal;
- ITQB NOVA—Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, 2780-157 Oeiras, Portugal
| | - Cristina Pereira
- iBET—Instituto de Biologia Experimental e Tecnológica, 2781-901 Oeiras, Portugal;
- ITQB NOVA—Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, 2780-157 Oeiras, Portugal
| | - Leila Chekir-Ghedira
- Unit of Natural Bioactive Substances and Biotechnology UR17ES49, Faculty of Dental Medicine, University of Monastir, Monastir 5000, Tunisia; (R.B.-K.); (L.C.-G.)
| | - Soraya Rodríguez-Rojo
- Research Institute on Bioeconomy (BioEcoUVa), High Pressure Processes Group, School of Industrial Engineering, University of Valladolid, 47011 Valladolid, Spain
| |
Collapse
|
13
|
Palmieri S, Maggio F, Pellegrini M, Ricci A, Serio A, Paparella A, Lo Sterzo C. Effect of the Distillation Time on the Chemical Composition, Antioxidant Potential and Antimicrobial Activity of Essential Oils from Different Cannabis sativa L. Cultivars. Molecules 2021; 26:molecules26164770. [PMID: 34443356 PMCID: PMC8399774 DOI: 10.3390/molecules26164770] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Revised: 07/26/2021] [Accepted: 08/03/2021] [Indexed: 12/22/2022] Open
Abstract
Within the unavoidable variability of various origins in the characteristics of essential oils, the aim of this study was to evaluate the effect of the distillation time on the chemical composition and biological activity of Cannabis sativa essential oils (EOs). The dry inflorescences came from Carmagnola, Kompolti, Futura 75, Gran Sasso Kush and Carmagnola Lemon varieties from Abruzzo region (Central Italy), the last two being new cultivar here described for the first time. EOs were collected at 2 h and 4 h of distillation; GC/MS technique was applied to characterize their volatile fraction. The EOs were evaluated for total polyphenol content (TPC), antioxidant capacity (AOC) and antimicrobial activity against food-borne pathogens and spoilage bacteria. The time of distillation particularly influenced EOs chemical composition, extracting more or less terpenic components, but generally enriching with minor sesquiterpenes and cannabidiol. A logical response in ratio of time was observed for antioxidant potential, being the essential oils at 4 h of distillation more active than those distilled for 2 h, and particularly Futura 75. Conversely, except for Futura 75, the effect of time on the antimicrobial activity was variable and requires further investigations; nevertheless, the inhibitory activity of all EOs against Pseudomonas fluorescens P34 was an interesting result.
Collapse
Affiliation(s)
| | | | | | - Antonella Ricci
- Correspondence: (A.R.); (A.S.); Tel.: +39-0861-266-904 (A.R.); +39-0861-266-801 (A.S.)
| | - Annalisa Serio
- Correspondence: (A.R.); (A.S.); Tel.: +39-0861-266-904 (A.R.); +39-0861-266-801 (A.S.)
| | | | | |
Collapse
|
14
|
Dinu MV, Gradinaru AC, Lazar MM, Dinu IA, Raschip IE, Ciocarlan N, Aprotosoaie AC. Physically cross-linked chitosan/dextrin cryogels entrapping Thymus vulgaris essential oil with enhanced mechanical, antioxidant and antifungal properties. Int J Biol Macromol 2021; 184:898-908. [PMID: 34157333 DOI: 10.1016/j.ijbiomac.2021.06.068] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 05/18/2021] [Accepted: 06/10/2021] [Indexed: 12/27/2022]
Abstract
Herein, we entrapped Thymus vulgaris essential oil (EO) within the physically cross-linked sponge-like architecture of cryogels by ice template-assisted freeze-drying. Their 3D cryogenically-structured network was built through hydrogen bonding formed by blending two naturally-derived polysaccharides, chitosan and dextrin. The embedment of EOs within the cryogel matrix generates porous films with an increased elasticity that allows their fast shape recovery after full compression. Thus, the swollen EOs-loaded cryogel films exhibited an elastic modulus of 3.00 MPa, which is more than 40 times higher than that of polysaccharide films without EOs (an elastic modulus of only 0.07 MPa). In addition, the encapsulation of bioactive compounds endows the bio-based films with both antioxidant and antifungal properties, showing a radical scavenging activity of 65% and a zone inhibition diameter of 40 mm for Candida parapsilosis fungi. Our results recommend the entrapment of EOs into bio-based cryogel carriers as a straightforward approach to provide 'green' polysaccharide-based films having both improved physicochemical properties and remarkable antifungal activity.
Collapse
Affiliation(s)
- Maria Valentina Dinu
- "Petru Poni" Institute of Macromolecular Chemistry, Department of Functional Polymers, Grigore Ghica Voda Alley 41A, Iasi 700487, Romania.
| | - Adina Catinca Gradinaru
- "Grigore T. Popa" University of Medicine and Pharmacy, Universitatii Street 16, Iasi 700115, Romania
| | - Maria Marinela Lazar
- "Petru Poni" Institute of Macromolecular Chemistry, Department of Functional Polymers, Grigore Ghica Voda Alley 41A, Iasi 700487, Romania
| | - Ionel Adrian Dinu
- "Petru Poni" Institute of Macromolecular Chemistry, Department of Functional Polymers, Grigore Ghica Voda Alley 41A, Iasi 700487, Romania; University of Basel, Department of Chemistry, BioPark Rosental (BPR) 1096, Mattenstrasse 24a, 4058 Basel, Switzerland
| | - Irina Elena Raschip
- "Petru Poni" Institute of Macromolecular Chemistry, Department of Functional Polymers, Grigore Ghica Voda Alley 41A, Iasi 700487, Romania
| | - Nina Ciocarlan
- Botanical Garden, Academy of Sciences of Moldova, Padurii Street 18, 2002, Chisinau, Republic of Moldova
| | - Ana Clara Aprotosoaie
- "Grigore T. Popa" University of Medicine and Pharmacy, Universitatii Street 16, Iasi 700115, Romania
| |
Collapse
|
15
|
Rathod NB, Ranveer RC, Benjakul S, Kim SK, Pagarkar AU, Patange S, Ozogul F. Recent developments of natural antimicrobials and antioxidants on fish and fishery food products. Compr Rev Food Sci Food Saf 2021; 20:4182-4210. [PMID: 34146459 DOI: 10.1111/1541-4337.12787] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 05/18/2021] [Accepted: 05/18/2021] [Indexed: 12/23/2022]
Abstract
Fish and fishery products (FFP) are highly perishable due to their high nutritional value and moisture content. The spoilage is mainly caused by microorganisms and chemical reactions, especially lipid oxidation, leading to losses in quality and market value. Microbiological and lipid deteriorations of fishery-derived products directly lower their nutritive value and pose the risk of toxicity for human health. Increasing demand for safe FFP brings about the preservation using additives from natural origins without chemical additives due to their safety and strict regulation. Antimicrobials and antioxidants from natural sources have exhibited an excellent control over the growth of microorganisms causing fish spoilage via different mechanisms. They also play a major role in retarding lipid oxidation by acting at various stages of oxidation. Antimicrobials and antioxidants from natural sources are usually regarded as safe with no detrimental effects on the quality attributes of FFP. This review provides recent literature on the different antioxidant and antimicrobial agents from natural sources, focusing on microbial and oxidative spoilage mechanisms, their inhibition system, and their applications to retard spoilage, maintain safety, and extend the shelf life of FFP. Their applications and benefits have been revisited.
Collapse
Affiliation(s)
- Nikheel Bhojraj Rathod
- Post Harvest Management of Meat, Poultry and Fish, Post Graduate Institute of Post-Harvest Management (Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth), Killa-Roha, Raigad, Maharashtra, 402 116, India
| | - Rahul Chudaman Ranveer
- Post Harvest Management of Meat, Poultry and Fish, Post Graduate Institute of Post-Harvest Management (Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth), Killa-Roha, Raigad, Maharashtra, 402 116, India
| | - Soottawat Benjakul
- International Center of Excellence in Seafood Science and Innovation, Faculty of Agro-Industry, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Se-Kwon Kim
- Department of Marine Science & Convergence Engineering, College of Science & Technology Hanyang University Erica, Ansan-si, Gyeonggi-do, South Korea
| | - Asif Umar Pagarkar
- Marine Biological Research Station, (DBSKKV), Ratnagiri, Maharashtra, 415 612, India
| | - Surendra Patange
- Post Harvest Management of Meat, Poultry and Fish, Post Graduate Institute of Post-Harvest Management (Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth), Killa-Roha, Raigad, Maharashtra, 402 116, India
| | - Fatih Ozogul
- Department of Seafood Processing Technology, Faculty of Fisheries, Cukurova University, Adana, Turkey, 01330, Turkey
| |
Collapse
|
16
|
Evaluation of Antibacterial Activity of Essential Oils and Their Combination against Multidrug-Resistant Bacteria Isolated from Skin Ulcer. Int J Microbiol 2021; 2021:6680668. [PMID: 33854550 PMCID: PMC8019382 DOI: 10.1155/2021/6680668] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 02/09/2021] [Accepted: 03/05/2021] [Indexed: 11/25/2022] Open
Abstract
Background Emerging of multidrug-resistant bacteria can compromise the effectiveness of antibiotics used to treat skin infections. Those bacteria imposed public health problems and questioning medical care in the 21st century. In this circumstance, essential oils of medicinal plants origin are supreme sources of structural and functionally divergent compounds, which inhibited the growth of common wound colonizing MRSA and ESBL producing P. aeruginosa. The aim of this study was to evaluate the combined antibacterial activity of essential oils extracted from Rumex abyssinicus, Cucumis pustulatus, and Discopodium penninervium against multidrug-resistant (MDR) isolates of skin ulcers. Methods Essential oils (EOs) were extracted from aerial parts of R. abyssinicus, C. pustulatus, and D. penninervium with steam distillation. A mixture of each oil (1 : 1) was adsorbed to a disc and placed on Mueller Hinton Agar. Then, minimum zone of inhibition and bactericidal concentration of EOs was measured after incubeted for 18–24 hours at 37 °C. Their combined antibacterial effect was determined by the fractional inhibitory concentration index. Results The antibacterial activity of mixed oil varied in their doses and bacteria species, of which a mixture of essential oil of R. abyssinicus and D. penninervium had inhibition zone (32 mm); its MIC and MBC values range from 1-2 μl/ml against MRSA. It had an inhibition zone (36 mm), MIC value 4 μl/ml, and MBC (8 μl/ml) against ESBL producing P. aeruginosa, whereas combined effects of R. abyssinicus and C. pustulatus had MIC values ranging from 2–8 μl/ml for E. coli and K. pneumoniae and 2 μl/ml for MRSA. There was a strong synergistic effect between R. abyssinicus and D. penninervium and promising antibacterial effect more specifically on MRSA and P. aeruginosa. Conclusion. This in vitro study of the combined effect of EOs has significant antibacterial activity on wound colonizing bacteria and reduces delaying wound healing as that of modern drugs tested in parallel. Hence, further structural elucidation of active compounds helps us to properly design or synthesis of topical antibiotics for wound care.
Collapse
|
17
|
MAPLE Coatings Embedded with Essential Oil-Conjugated Magnetite for Anti-Biofilm Applications. MATERIALS 2021; 14:ma14071612. [PMID: 33806228 PMCID: PMC8036921 DOI: 10.3390/ma14071612] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 03/16/2021] [Accepted: 03/19/2021] [Indexed: 02/07/2023]
Abstract
The present study reports on the development and evaluation of nanostructured composite coatings of polylactic acid (PLA) embedded with iron oxide nanoparticles (Fe3O4) modified with Eucalyptus (Eucalyptus globulus) essential oil. The co-precipitation method was employed to synthesize the magnetite particles conjugated with Eucalyptus natural antibiotic (Fe3O4@EG), while their composition and microstructure were investigated using grazing incidence X-ray diffraction (GIXRD), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), transmission electron microscopy (TEM) and dynamic light scattering (DLS). The matrix-assisted pulsed laser evaporation (MAPLE) technique was further employed to obtain PLA/Fe3O4@EG thin films. Optimal experimental conditions for laser processing were established by complementary infrared microscopy (IRM) and scanning electron microscopy (SEM) investigations. The in vitro biocompatibility with eukaryote cells was proven using mesenchymal stem cells, while the anti-biofilm efficiency of composite PLA/Fe3O4@EG coatings was assessed against Gram-negative and Gram-positive pathogens.
Collapse
|
18
|
Nanoemulsions of Satureja montana Essential Oil: Antimicrobial and Antibiofilm Activity against Avian Escherichia coli Strains. Pharmaceutics 2021; 13:pharmaceutics13020134. [PMID: 33494240 PMCID: PMC7909762 DOI: 10.3390/pharmaceutics13020134] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/12/2021] [Accepted: 01/17/2021] [Indexed: 02/07/2023] Open
Abstract
Satureja montana essential oil (SEO) presents a wide range of biological activities due to its high content of active phytochemicals. In order to improve the essential oil’s (EO) properties, oil in water nanoemulsions (NEs) composed of SEO and Tween-80 were prepared, characterized, and their antimicrobial and antibiofilm properties assayed against Escherichia coli strains isolated from healthy chicken. Since surfactant and oil composition can strongly influence NE features and their application field, a ternary phase diagram was constructed and evaluated to select a suitable surfactant/oil/water ratio. Minimal inhibitory concentration and minimal bactericidal concentration of NEs, evaluated by the microdilution method, showed that the SEO NE formulation exhibited higher inhibitory effects against planktonic E. coli than SEO alone. The quantification of biofilm production in the presence of NEs, assessed by crystal violet staining and scanning electron microscopy, evidenced that sub-MIC concentrations of SEO NEs enable an efficient reduction of biofilm production by the strong producer strains. The optimized nanoemulsion formulation could ensure food safety quality, and counteract the antibiotic resistance of poultry associated E. coli, if applied/aerosolized in poultry farms.
Collapse
|
19
|
Boren K, Crown A, Carlson R. Multidrug and Pan-Antibiotic Resistance—The Role of Antimicrobial and Synergistic Essential Oils: A Review. Nat Prod Commun 2020. [DOI: 10.1177/1934578x20962595] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Bacterial resistance to antibiotics continues to be a grave threat to human health. Because antibiotics are no longer a lucrative market for pharmaceutical companies, the development of new antibiotics has slowed to a crawl. The World Health Organization reported that the 8 new bacterial agents approved since July 2017 had limited clinical benefits. While a cohort of biopharmaceutical companies recently announced plans to develop 2-4 new antibiotics by 2030, we needn’t wait a decade to find innovative antibiotic candidates. Essential oils (EOs) have long been known as antibacterial agents with wide-ranging arsenals. Many are able to penetrate the bacterial membrane and may also be effective against bacterial defenses such as biofilms, efflux pumps, and quorum sensing. EOs have been documented to fight drug-resistant bacteria alone and/or combined with antibiotics. This review will summarize research showing the significant role of EOs as nonconventional regimens against the worldwide spread of antibiotic-resistant pathogens. The authors conducted a 4-year search of the US National Library of Medicine (PubMed) for relevant EO studies against methicillin-resistant Staphylococcus aureus, multidrug-resistant (MDR) Escherichia coli, EO combinations/synergy with antibiotics, against MDR fungal infections, showing the ability to permeate bacterial membranes, and against the bacterial defenses listed above. EOs are readily available and are a needed addition to the arsenal against resistant pathogens.
Collapse
|
20
|
Aelenei P, Rimbu CM, Horhogea CE, Lobiuc A, Neagu AN, Dunca SI, Motrescu I, Dimitriu G, Aprotosoaie AC, Miron A. Prenylated phenolics as promising candidates for combination antibacterial therapy: Morusin and kuwanon G. Saudi Pharm J 2020; 28:1172-1181. [PMID: 33132710 PMCID: PMC7584796 DOI: 10.1016/j.jsps.2020.08.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 08/11/2020] [Indexed: 12/20/2022] Open
Abstract
Combination of antibiotics with natural products is a promising strategy for potentiating antibiotic activity and overcoming antibiotic resistance. The purpose of the present study was to investigate whether morusin and kuwanon G, prenylated phenolics in Morus species, have the ability to enhance antibiotic activity and reverse antibiotic resistance in Staphylococcus aureus and Staphylococcus epidermidis. Commonly used antibiotics (oxacillin, erythromycin, gentamicin, ciprofloxacin, tetracycline, clindamycin) were selected for the combination studies. Checkerboard and time-kill assays were used to investigate potential bacteriostatic and bactericidal synergistic interactions, respectively between morusin or kuwanon G and antibiotics. According to both fractional inhibitory concentration index and response surface models, twenty combinations (14 morusin-antibiotic combinations, six kuwanon G-antibiotic combinations) displaying bacteriostatic synergy were identified, with 4–512-fold reduction in the minimum inhibitory concentration values of antibiotics in combination. Both morusin and kuwanon G reversed oxacillin resistance of methicillin-resistant Staphylococcus aureus. In addition, morusin reversed tetracycline resistance of Staphylococcus epidermidis. At half of the minimum inhibitory concentrations, combinations of morusin with oxacillin or gentamicin showed bactericidal synergy against methicillin-resistant Staphylococcus aureus. Fluorescence and differential interference contrast microscopy and scanning electron microscopy showed an increase in the membrane permeability and massive leakage of cellular content in methicillin-resistant Staphylococcus aureus exposed to morusin or kuwanon G. Overall, our findings strongly indicate that both prenylated compounds are good candidates for the development of novel antibacterial combination therapies.
Collapse
Affiliation(s)
- Petruta Aelenei
- Department of Pharmacognosy, Faculty of Pharmacy, Grigore T. Popa University of Medicine and Pharmacy Iasi, Universitatii Str. 16, Iasi 700115, Romania.,Regulatory Affairs Department, Fiterman Pharma LLC, Pacurari Road 127, Iasi 700544, Romania
| | - Cristina Mihaela Rimbu
- Department of Public Health, Faculty of Veterinary Medicine, Ion Ionescu de la Brad University of Agricultural Sciences and Veterinary Medicine of Iasi, Mihail Sadoveanu Al. 8, Iasi 700489, Romania
| | - Cristina Elena Horhogea
- Department of Public Health, Faculty of Veterinary Medicine, Ion Ionescu de la Brad University of Agricultural Sciences and Veterinary Medicine of Iasi, Mihail Sadoveanu Al. 8, Iasi 700489, Romania
| | - Andrei Lobiuc
- Human Health and Development Department, Stefan cel Mare University of Suceava, Universitatii Str. 13, Suceava 720229, Romania.,Integrated Research Centre for Environmental Studies in the N-E Area - CERNESIM, L2 Laboratory, Alexandru Ioan Cuza University of Iasi, Carol I Bd. 20A, Iasi 700506, Romania
| | - Anca-Narcisa Neagu
- Faculty of Biology, Alexandru Ioan Cuza University of Iasi, Carol I Bd. 20A, Iasi 700505, Romania
| | - Simona Isabela Dunca
- Faculty of Biology, Alexandru Ioan Cuza University of Iasi, Carol I Bd. 20A, Iasi 700505, Romania
| | - Iuliana Motrescu
- Science Department & Research Institute for Agriculture and Environment, Ion Ionescu de la Brad University of Agricultural Sciences and Veterinary Medicine of Iasi, Mihail Sadoveanu Al. 3, Iasi 700490, Romania
| | - Gabriel Dimitriu
- Department of Medical Informatics and Biostatistics, Faculty of Medicine, Grigore T. Popa University of Medicine and Pharmacy Iasi, Universitatii Str. 16, Iasi 700115, Romania
| | - Ana Clara Aprotosoaie
- Department of Pharmacognosy, Faculty of Pharmacy, Grigore T. Popa University of Medicine and Pharmacy Iasi, Universitatii Str. 16, Iasi 700115, Romania
| | - Anca Miron
- Department of Pharmacognosy, Faculty of Pharmacy, Grigore T. Popa University of Medicine and Pharmacy Iasi, Universitatii Str. 16, Iasi 700115, Romania
| |
Collapse
|
21
|
Vázquez-Ucha JC, Martínez-Guitián M, Lasarte-Monterrubio C, Conde-Pérez K, Arca-Suárez J, Álvarez-Fraga L, Pérez A, Crecente-Campo J, Alonso MJ, Bou G, Poza M, Beceiro A. Syzygium aromaticum (clove) and Thymus zygis (thyme) essential oils increase susceptibility to colistin in the nosocomial pathogens Acinetobacter baumannii and Klebsiella pneumoniae. Biomed Pharmacother 2020; 130:110606. [PMID: 32795924 DOI: 10.1016/j.biopha.2020.110606] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 07/30/2020] [Accepted: 08/02/2020] [Indexed: 01/29/2023] Open
Abstract
The discovery of new antibiotics that are effective against Acinetobacter baumannii and Enterobacteralesis a research priority. Several essential oils (EOs) have displayed some antimicrobial activity and could potentially act as antibiotic adjuvants. Research in this area aims to develop new therapeutic alternatives to treat infections caused by these pathogens. MICs of different EOs were determined against A. baumannii and Klebsiella pneumoniae. Combined disk diffusion tests and checkerboard assays were used to study the synergy between the EOs and antibiotics. The fractional inhibitory concentration index (FICindex) was calculated in order to categorize the interaction. Time-kill assays were also performed. The EOs that displayed the highest levels of antimicrobial activity were clove (Syzygium aromaticum L.) and thyme (Thymus zygis L.). Combined disk diffusion tests and checkerboard assays revealed synergy between these EOs and colistin. Addition of either clove or thyme EO decreased the MIC of colistin by 8- to 64-fold and 8- to 128-fold in the colistin-resistant A. baumannii and K. pneumoniae strains, respectively (FICindex ≤ 0.5, synergy). MICs were also reduced in the colistin-susceptible strains. Time-kill assays also indicated the strong activity of the combined therapy. In summary, the use of clove or thyme EO in combination with colistin could improve the efficacy of the antibiotic and significantly reduce the concentrations needed to inhibit growth of A. baumannii and K. pneumoniae.
Collapse
Affiliation(s)
- Juan C Vázquez-Ucha
- Servicio de Microbiología, Instituto de Investigación Biomédica de A Coruña (INIBIC-CICA), Complejo Hospitalario Universitario A Coruña (CHUAC), As Xubias 84, 15006, A Coruña, Spain.
| | - Marta Martínez-Guitián
- Servicio de Microbiología, Instituto de Investigación Biomédica de A Coruña (INIBIC-CICA), Complejo Hospitalario Universitario A Coruña (CHUAC), As Xubias 84, 15006, A Coruña, Spain
| | - Cristina Lasarte-Monterrubio
- Servicio de Microbiología, Instituto de Investigación Biomédica de A Coruña (INIBIC-CICA), Complejo Hospitalario Universitario A Coruña (CHUAC), As Xubias 84, 15006, A Coruña, Spain
| | - Kelly Conde-Pérez
- Servicio de Microbiología, Instituto de Investigación Biomédica de A Coruña (INIBIC-CICA), Complejo Hospitalario Universitario A Coruña (CHUAC), As Xubias 84, 15006, A Coruña, Spain
| | - Jorge Arca-Suárez
- Servicio de Microbiología, Instituto de Investigación Biomédica de A Coruña (INIBIC-CICA), Complejo Hospitalario Universitario A Coruña (CHUAC), As Xubias 84, 15006, A Coruña, Spain
| | - Laura Álvarez-Fraga
- Servicio de Microbiología, Instituto de Investigación Biomédica de A Coruña (INIBIC-CICA), Complejo Hospitalario Universitario A Coruña (CHUAC), As Xubias 84, 15006, A Coruña, Spain
| | - Astrid Pérez
- Servicio de Microbiología, Instituto de Investigación Biomédica de A Coruña (INIBIC-CICA), Complejo Hospitalario Universitario A Coruña (CHUAC), As Xubias 84, 15006, A Coruña, Spain
| | - José Crecente-Campo
- Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), Campus Vida Universidade de Santiago de Compostela (USC), Av. Barcelona, 15706, Santiago de Compostela, Spain
| | - María J Alonso
- Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), Campus Vida Universidade de Santiago de Compostela (USC), Av. Barcelona, 15706, Santiago de Compostela, Spain
| | - Germán Bou
- Servicio de Microbiología, Instituto de Investigación Biomédica de A Coruña (INIBIC-CICA), Complejo Hospitalario Universitario A Coruña (CHUAC), As Xubias 84, 15006, A Coruña, Spain
| | - Margarita Poza
- Servicio de Microbiología, Instituto de Investigación Biomédica de A Coruña (INIBIC-CICA), Complejo Hospitalario Universitario A Coruña (CHUAC), As Xubias 84, 15006, A Coruña, Spain
| | - Alejandro Beceiro
- Servicio de Microbiología, Instituto de Investigación Biomédica de A Coruña (INIBIC-CICA), Complejo Hospitalario Universitario A Coruña (CHUAC), As Xubias 84, 15006, A Coruña, Spain
| |
Collapse
|
22
|
Almughem FA, Aldossary AM, Tawfik EA, Alomary MN, Alharbi WS, Alshahrani MY, Alshehri AA. Cystic Fibrosis: Overview of the Current Development Trends and Innovative Therapeutic Strategies. Pharmaceutics 2020; 12:E616. [PMID: 32630625 PMCID: PMC7407299 DOI: 10.3390/pharmaceutics12070616] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 06/28/2020] [Accepted: 06/30/2020] [Indexed: 12/13/2022] Open
Abstract
Cystic Fibrosis (CF), an autosomal recessive genetic disease, is caused by a mutation in the gene encoding the cystic fibrosis transmembrane conductance regulator (CFTR). This mutation reduces the release of chloride ions (Cl-) in epithelial tissues, and hyperactivates the epithelial sodium channels (ENaC) which aid in the absorption of sodium ions (Na+). Consequently, the mucus becomes dehydrated and thickened, making it a suitable medium for microbial growth. CF causes several chronic lung complications like thickened mucus, bacterial infection and inflammation, progressive loss of lung function, and ultimately, death. Until recently, the standard of clinical care in CF treatment had focused on preventing and treating the disease complications. In this review, we have summarized the current knowledge on CF pathogenesis and provided an outlook on the current therapeutic approaches relevant to CF (i.e., CFTR modulators and ENaC inhibitors). The enormous potential in targeting bacterial biofilms using antibiofilm peptides, and the innovative therapeutic strategies in using the CRISPR/Cas approach as a gene-editing tool to repair the CFTR mutation have been reviewed. Finally, we have discussed the wide range of drug delivery systems available, particularly non-viral vectors, and the optimal properties of nanocarriers which are essential for successful drug delivery to the lungs.
Collapse
Affiliation(s)
- Fahad A. Almughem
- National Centre for Pharmaceutical Technology, King Abdulaziz City for Science and Technology (KACST), P.O. Box 6086, Riyadh 11442, Saudi Arabia; (F.A.A.); (E.A.T.)
| | - Ahmad M. Aldossary
- National Centre for Biotechnology, King Abdulaziz City for Science and Technology (KACST), P.O. Box 6086, Riyadh 11442, Saudi Arabia; (A.M.A.); (M.N.A.)
| | - Essam A. Tawfik
- National Centre for Pharmaceutical Technology, King Abdulaziz City for Science and Technology (KACST), P.O. Box 6086, Riyadh 11442, Saudi Arabia; (F.A.A.); (E.A.T.)
| | - Mohammad N. Alomary
- National Centre for Biotechnology, King Abdulaziz City for Science and Technology (KACST), P.O. Box 6086, Riyadh 11442, Saudi Arabia; (A.M.A.); (M.N.A.)
| | - Waleed S. Alharbi
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, P.O. Box 80260, Jeddah 21589, Saudi Arabia;
| | - Mohammad Y. Alshahrani
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, P.O. Box 61413, Abha 9088, Saudi Arabia;
| | - Abdullah A. Alshehri
- National Centre for Pharmaceutical Technology, King Abdulaziz City for Science and Technology (KACST), P.O. Box 6086, Riyadh 11442, Saudi Arabia; (F.A.A.); (E.A.T.)
| |
Collapse
|
23
|
Trifan A, Luca SV, Greige-Gerges H, Miron A, Gille E, Aprotosoaie AC. Recent advances in tackling microbial multidrug resistance with essential oils: combinatorial and nano-based strategies. Crit Rev Microbiol 2020; 46:338-357. [DOI: 10.1080/1040841x.2020.1782339] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Adriana Trifan
- Department of Pharmacognosy, Faculty of Pharmacy, Grigore T. Popa University of Medicine and Pharmacy Iasi, Iasi, Romania
| | - Simon Vlad Luca
- Department of Pharmacognosy, Faculty of Pharmacy, Grigore T. Popa University of Medicine and Pharmacy Iasi, Iasi, Romania
- Biothermodynamics, TUM School of Life Sciences Weihenstephan, Technical University of Munich, Freising, Germany
| | - Hélène Greige-Gerges
- Bioactive Molecules Research Laboratory, Faculty of Sciences, Lebanese University, Jdaidet El-Matn, Lebanon
| | - Anca Miron
- Department of Pharmacognosy, Faculty of Pharmacy, Grigore T. Popa University of Medicine and Pharmacy Iasi, Iasi, Romania
| | - Elvira Gille
- National Institute of Research & Development for Biological Sciences Bucuresti/Stejarul Biological Research Centre, Piatra Neamt, Romania
| | - Ana Clara Aprotosoaie
- Department of Pharmacognosy, Faculty of Pharmacy, Grigore T. Popa University of Medicine and Pharmacy Iasi, Iasi, Romania
| |
Collapse
|
24
|
In Vitro Activity of Essential Oils Against Planktonic and Biofilm Cells of Extended-Spectrum β-Lactamase (ESBL)/Carbapenamase-Producing Gram-Negative Bacteria Involved in Human Nosocomial Infections. Antibiotics (Basel) 2020; 9:antibiotics9050272. [PMID: 32466117 PMCID: PMC7277674 DOI: 10.3390/antibiotics9050272] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 05/15/2020] [Accepted: 05/20/2020] [Indexed: 12/13/2022] Open
Abstract
The aim of this study was to analyze the antibacterial activity of four essential oils (EOs), Melaleuca alternifolia, Eucalyptus globulus, Mentha piperita, and Thymus vulgaris, in preventing the development and spread of extended-spectrum β-lactamase (ESBL)-producing Escherichia coli and Klebsiella pneumoniae, metallo-beta-lactamase (MBL)-producing Pseudomonas aeruginosa and carbapenemase (KPC)-producing Klebsiella pneumoniae. A total of 60 strains were obtained from the stock collection from the Microbiology Laboratory of Hesperia Hospital, Modena, Italy. Twenty ESBL-producing E. coli, 5 K. pneumoniae, 13 KPC-producing K. pneumoniae, and 20 MBL-producing P. aeruginosa were cultured and reconfirmed as ESBL and carbapenamase producers. Polymerase chain reaction was used for the detection of genes responsible for antibiotic resistance (ESBL and KPC/MBL). Antibacterial activity of the EOs was determined using the agar disk diffusion assay, and minimal inhibitory concentrations (MICs) were also evaluated. Lastly, adhesion capability and biofilm formation on polystyrene and glass surfaces were studied in 24 randomly selected strains. M. alternifolia and T. vulgaris EOs showed the best antibacterial activity against all tested strains and, as revealed by agar disk diffusion assay, M. alternifolia was the most effective, even at low concentrations. This effect was also confirmed by MICs, with values ranging from 0.5 to 16 µg/mL and from 1 to 16 µg/mL, for M. alternifolia and T. vulgaris EOs, respectively. The EOs' antibacterial activity compared to antibiotics confirmed M. alternifolia EO as the best antibacterial agent. T. vulgaris EO also showed a good antibacterial activity with MICs lower than both reference antibiotics. Lastly, a significant anti-biofilm activity was observed for the two EOs (*P < 0.05 and **P < 0.01 for M. alternifolia and T. vulgaris EOs, respectively). A good antibacterial and anti-biofilm activity of M. alternifolia and T. vulgaris EOs against all selected strains was observed, thus demonstrating a future possible use of these EOs to treat infections caused by ESBL/carbapenemase-producing strains, even in association with antibiotics.
Collapse
|
25
|
Naeim H, El-Hawiet A, Abdel Rahman RA, Hussein A, El Demellawy MA, Embaby AM. Antibacterial activity of Centaurea pumilio L. root and aerial part extracts against some multidrug resistant bacteria. BMC Complement Med Ther 2020; 20:79. [PMID: 32164639 PMCID: PMC7076891 DOI: 10.1186/s12906-020-2876-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 02/28/2020] [Indexed: 11/29/2022] Open
Abstract
Background In the context of searching for potent, safe, natural antimicrobial agents to combate the global antimicrobial resistance (AMR) phenomenon, the current study evaluates for the first time ever, the broad-spectrum antimicrobial activity of essential oil (EO) and extracts from the rare wild plant Centaurea pumilio L.. It has tremendous ethnomedicinal values; its dried root is used as a fattening agent, a treatment for bad breath and diabetes, and screened for schistosomicidal activity. Methods C. pumilio EO was extracted by hydrodistillation using a Clevenger apparatus. Chemical constituents of aerial part were extracted using a sequential solvent/solvent procedure employing four solvents with increasing polarities in the following order: petroleum ether, chloroform, ethyl acetate, and n-butanol. The chemical constituents were identified by GC-MS. Fifty-two microbial strains were used; twenty-six multidrug resistant (MDR), sixteen clinical, and ten reference strains. The identification of the microbial strains was performed by MALDI-TOF-MS. The antimicrobial activity of the EO and the aerial part and the root extracts was assessed through disc diffusion assay. A minimum inhibitory concentration (MIC) of the EO and extracts was determined using the broth micro-dilution method. Results The growth of reference and clinical strains was inhibited by EO, methanol, chloroform, and ethyl acetate aerial part extracts and chloroform root extract. The MDR strains growth, however, was inhibited only by EO and chloroform aerial part extract. GC-MS identified for the first time eighteen constituents from aerial part EO and chloroform extract each. EO showed antimicrobial activity against the reference, clinical, and MDR strains with MIC values of 31.25–125, 31.25–125, and 62.50–250 μg/mL, respectively. Methanol aerial part extract exhibited high antimicrobial activities with MIC values of 62.50–250 μg/mL against reference and clinical strains. Chloroform root extract displayed strong antimicrobial activity against reference and clinical strains recording MIC values of 62.50–250 μg/mL and 62.50–125 μg/mL, respectively. The chloroform aerial part extract demonstrated potent antimicrobial activity against the reference, clinical, and MDR strains with 31.25, 31.25, and 15.62 μg/mL MIC values, respectively. Conclusions Present data unravel the C. pumilio pharmacological magnitude to discover eco-friendly potent antimicrobial agents to fight AMR phenomenon.
Collapse
Affiliation(s)
- Huda Naeim
- Department of Biotechnology, Institute of Graduate Studies and Research, Alexandria University, 163 Horreya Avenue, Chatbye, P.O.Box 832, Alexandria, Egypt.,Pharmaceutical Bioproducts Research Department, Genetic Engineering & Biotechnology Research Institute (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Alexandria, Egypt.,Medical Biotechnology Department, GEBRI, SRTA-City, New Borg El-Arab City, Alexandria, Egypt
| | - Amr El-Hawiet
- Department of Pharmacognosy, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| | - Raoufa A Abdel Rahman
- Pharmaceutical Bioproducts Research Department, Genetic Engineering & Biotechnology Research Institute (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Alexandria, Egypt
| | - Ahmed Hussein
- Department of Biotechnology, Institute of Graduate Studies and Research, Alexandria University, 163 Horreya Avenue, Chatbye, P.O.Box 832, Alexandria, Egypt
| | - Maha A El Demellawy
- Medical Biotechnology Department, GEBRI, SRTA-City, New Borg El-Arab City, Alexandria, Egypt
| | - Amira M Embaby
- Department of Biotechnology, Institute of Graduate Studies and Research, Alexandria University, 163 Horreya Avenue, Chatbye, P.O.Box 832, Alexandria, Egypt.
| |
Collapse
|
26
|
The Effect of Ten Essential Oils on Several Cutaneous Drug-Resistant Microorganisms and Their Cyto/Genotoxic and Antioxidant Properties. Molecules 2019; 24:molecules24244570. [PMID: 31847159 PMCID: PMC6943746 DOI: 10.3390/molecules24244570] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Revised: 11/28/2019] [Accepted: 12/05/2019] [Indexed: 12/14/2022] Open
Abstract
In this study, we determined the antimicrobial activity of ten essential oils (EOs)—oregano, thyme, clove, arborvitae, cassia, lemongrass, melaleuca, eucalyptus, lavender, and clary sage—against drug-resistant microorganisms previously isolated from patients with skin infections. The essential oil compositions were determined using gas chromatography coupled to mass spectrometry (GC/MS). The assayed bacteria included Pseudomonas aeruginosa, Proteus vulgaris, Citrobacter koseri, and Klebsiella pneumoniae. Two drug-resistant yeasts (Candidaalbicans and Candida parapsilosis) were also involved in our survey. Oregano, thyme, cassia, lemongrass and arborvitae showed very strong antibacterial and antifungal activity against all tested strains. These results show that these essential oils may be effective in preventing the growth of the drug-resistant microorganisms responsible for wound infections. In this study, the genotoxic effects of tested essential oils on healthy human keratinocytes HaCaT were evaluated using the comet assay for the first time. These results revealed that none of the essential oils induced significant DNA damage in vitro after 24 h. Moreover, the treatment of HaCaT cells with essential oils increased the total antioxidant status (TAS) level. The obtained results indicate that EOs could be used as a potential source of safe and potent natural antimicrobial and antioxidant agents in the pharmaceutical and food industries.
Collapse
|
27
|
Sadgrove NJ, Jones GL. From Petri Dish to Patient: Bioavailability Estimation and Mechanism of Action for Antimicrobial and Immunomodulatory Natural Products. Front Microbiol 2019; 10:2470. [PMID: 31736910 PMCID: PMC6834656 DOI: 10.3389/fmicb.2019.02470] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 10/15/2019] [Indexed: 01/02/2023] Open
Abstract
The new era of multidrug resistance of pathogens against frontline antibiotics has compromised the immense therapeutic gains of the 'golden age,' stimulating a resurgence in antimicrobial research focused on antimicrobial and immunomodulatory components of botanical, fungal or microbial origin. While much valuable information has been amassed on the potency of crude extracts and, indeed, purified compounds there are too many reports that uncritically extrapolate observed in vitro activity to presumed ingestive and/or topical therapeutic value, particularly in the discipline of ethnopharmacology. Thus, natural product researchers would benefit from a basic pharmacokinetic and pharmacodynamic understanding. Furthermore, therapeutic success of complex mixtures or single components derived therefrom is not always proportionate to their MIC values, since immunomodulation can be the dominant mechanism of action. Researchers often fail to acknowledge this, particularly when 'null' activity is observed. In this review we introduce the most up to date theories of oral and topical bioavailability including the metabolic processes affecting xenobiotic biotransformation before and after drugs reach the site of their action in the body. We briefly examine the common methodologies employed in antimicrobial, immunomodulatory and pharmacokinetic research. Importantly, we emphasize the contribution of synergies and/or antagonisms in complex mixtures as they affect absorptive processes in the body and sometimes potentiate activity. Strictly in the context of natural product research, it is important to acknowledge the potential for chemotypic variation within important medicinal plants. Furthermore, polar head space and rotatable bonds give a priori indications of the likelihood of bioavailability of active metabolites. Considering this and other relatively simple chemical insights, we hope to provide the basis for a more rigorous scientific assessment, enabling researchers to predict the likelihood that observed in vitro anti-infective activity will translate to in vivo outcomes in a therapeutic context. We give worked examples of tentative pharmacokinetic assessment of some well-known medicinal plants.
Collapse
Affiliation(s)
- Nicholas John Sadgrove
- Pharmaceuticals and Nutraceuticals (PAN) Group, School of Science and Technology, University of New England, Armidale, NSW, Australia
- Jodrell Science Laboratory, Royal Botanic Gardens, Kew, Richmond, United Kingdom
| | - Graham Lloyd Jones
- Pharmaceuticals and Nutraceuticals (PAN) Group, School of Science and Technology, University of New England, Armidale, NSW, Australia
| |
Collapse
|
28
|
Lira MC, Rodrigues JB, Almeida ETC, Ritter AC, Tondo E, Torres SM, Schaffner D, de Souza EL, Magnani M. Efficacy of oregano and rosemary essential oils to affect morphology and membrane functions of noncultivable sessile cells of Salmonella Enteritidis 86 in biofilms formed on stainless steel. J Appl Microbiol 2019; 128:376-386. [PMID: 31448524 DOI: 10.1111/jam.14423] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 08/05/2019] [Accepted: 08/17/2019] [Indexed: 01/06/2023]
Abstract
AIMS This study evaluated the efficacy of essential oil from Origanum vulgare L. (oregano; OVEO) and Rosmarinus officinalis L. (rosemary; ROEO) to inactivate sessile cells of Salmonella enterica serovar Enteritidis 86 (SE86) in young and mature biofilms formed on stainless steel. METHODS AND RESULTS Ultrastructural alterations and damage in different physiological functions caused by OVEO and ROEO in noncultivable sessile cells of SE86 were investigated using scanning electron microscopy and flow cytometry. OVEO (2·5 μl ml-1 ) and ROEO (40 μl ml-1 ) were effective to eradicate young and mature biofilms formed by SE86 sessile cells on stainless steel surfaces; however, the efficacy varied with exposure time. OVEO and ROEO caused alterations in morphology of SE86 sessile cells, inducing the occurrence of bubbles or spots on cell surface. OVEO and ROEO compromised membrane polarization, permeability and efflux activity in noncultivable SE86 sessile cells. These findings show that OVEO and ROEO act by a multitarget mechanism on SE86 membrane functions. CONCLUSIONS ROEO and OVEO showed efficacy to eradicate SE86 sessile cells in preformed biofilms on stainless steel, displaying a time-dependent effect and multitarget action mode on bacterial cell membrane. SIGNIFICANCE AND IMPACT OF THE STUDY The study provides for the first time the effects of OVEO and ROEO on morphology and physiological functions of noncultivable sessile cells of S. Enteritidis biofilms preformed on stainless steel surfaces.
Collapse
Affiliation(s)
- M C Lira
- Department of Nutrition, Health Sciences Center, Laboratory of Food Microbiology, Federal University of Paraíba, João Pessoa, Brazil
| | - J B Rodrigues
- Department of Food Engineering, Center of Technology, Laboratory of Microbial Process in Foods, Federal University of Paraíba, João Pessoa, Brazil
| | - E T C Almeida
- Department of Nutrition, Health Sciences Center, Laboratory of Food Microbiology, Federal University of Paraíba, João Pessoa, Brazil
| | - A C Ritter
- Laboratory of Food Microbiology, Food Science and Technology Institute, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - E Tondo
- Laboratory of Food Microbiology, Food Science and Technology Institute, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - S M Torres
- Department of Materials Engineering, Center of Technology, Federal University of Paraíba, João Pessoa, Brazil
| | - D Schaffner
- Department of Food Science, Rutgers, The State University of New Jersey, New Brunswick, NJ, USA
| | - E L de Souza
- Department of Nutrition, Health Sciences Center, Laboratory of Food Microbiology, Federal University of Paraíba, João Pessoa, Brazil
| | - M Magnani
- Department of Food Engineering, Center of Technology, Laboratory of Microbial Process in Foods, Federal University of Paraíba, João Pessoa, Brazil
| |
Collapse
|
29
|
Grădinaru A, Trifan A, Şpac A, Brebu M, Miron A, Aprotosoaie A. Antibacterial activity of traditional spices against lower respiratory tract pathogens: combinatorial effects of Trachyspermum ammi
essential oil with conventional antibiotics. Lett Appl Microbiol 2018; 67:449-457. [DOI: 10.1111/lam.13069] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 08/23/2018] [Accepted: 08/27/2018] [Indexed: 01/31/2023]
Affiliation(s)
- A.C. Grădinaru
- Department of Animal and Vegetal Biology, Faculty of Pharmacy; Grigore T. Popa University of Medicine and Pharmacy Iasi; Iasi Romania
| | - A. Trifan
- Department of Pharmacognosy, Faculty of Pharmacy; Grigore T. Popa University of Medicine and Pharmacy Iasi; Iasi Romania
| | - A. Şpac
- Department of Physical Chemistry, Faculty of Pharmacy; Grigore T. Popa University of Medicine and Pharmacy Iasi; Iasi Romania
| | - M. Brebu
- Physical Chemistry of Polymers Laboratory; Petru Poni Institute of Macromolecular Chemistry; Iasi Romania
| | - A. Miron
- Department of Pharmacognosy, Faculty of Pharmacy; Grigore T. Popa University of Medicine and Pharmacy Iasi; Iasi Romania
| | - A.C. Aprotosoaie
- Department of Pharmacognosy, Faculty of Pharmacy; Grigore T. Popa University of Medicine and Pharmacy Iasi; Iasi Romania
| |
Collapse
|
30
|
Development, Characterization, and Evaluation of Novel Broad-Spectrum Antimicrobial Topical Formulations from Cymbopogon martini (Roxb.) W. Watson Essential Oil. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 2018:9812093. [PMID: 30275867 PMCID: PMC6151366 DOI: 10.1155/2018/9812093] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 08/19/2018] [Indexed: 12/13/2022]
Abstract
Background Skin infections were the most frequently encountered of all infections and the 4th leading cause of nonfatal disease burden. Topical drugs have been used for the management of skin infections. The growing concern of drug resistance to the topical agents has warned the need for continuous development of novel drug. Essential oils are the best candidate for new drug with different mode of action and target as they are rich in chemical constituents. Objective To evaluate and develop safe and effective topical antimicrobial formulations from essential oil of Cymbopogon martini. Method. Essential oil was extracted using hydrodistillation aerial part C. martini and topical formulations were prepared in five different semisolid bases. In vitro antimicrobial investigations were performed on essential oil and topical formulations. Skin sensitizations of the formulations were evaluated using guinea pig maximization. Results The essential oil of C. martini has shown broad-spectrum antimicrobial potency against all tested organisms with MIC value ranging from 0.65 to 10 μg/ml. Absolute inhibitions of growth of fungi were observed against Trichophyton mentagrophytes and Trichophyton rubrum at concentrations above 1% of oil and against Microsporum canis and Trichophyton verrucosum at a concentration of 4% oil. Among topical formulations, the highest antimicrobial activity was recorded in hydrophilic ointment followed by macrogol blend ointment. The antimicrobial activity of oil was higher in fungal pathogen compared to bacteria. Gram positive bacteria were more sensitive than gram negative bacteria. Hydrophilic and macrogol blend ointment containing 5% oil did not produce any skin sensitization on guinea pigs. Conclusion In conclusion, topical formulations of C. martini essential oil can be alternative topical agents with safe broad-spectrum activity for the treatment of skin disorder. Further studies should focus on shelf life study and clinical study of the product.
Collapse
|
31
|
Yilmaz S, Sova M, Ergün S. Antimicrobial activity of trans-cinnamic acid and commonly used antibiotics against important fish pathogens and nonpathogenic isolates. J Appl Microbiol 2018; 125:1714-1727. [PMID: 30179290 DOI: 10.1111/jam.14097] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 07/17/2018] [Accepted: 08/14/2018] [Indexed: 12/19/2022]
Abstract
AIMS Antibiotics and several other chemicals have been used to prevent fish diseases. However, this situation results in economic loss for the companies in the aquaculture industry and most importantly it pollutes the environment. Cinnamic acid is a naturally occurring aromatic acid and is considered to be safe for human consumption. Therefore, in this study, the antibacterial activity of trans-cinnamic acid and commonly used antibiotics, namely chloramphenicol, vancomycin, streptomycin and erythromycin, were tested against 32 bacteria, including fish pathogens, nonpathogenic isolates and collection strains. METHODS AND RESULTS Trans-cinnamic acid was applied against the bacteria using the disc diffusion and microdilution method under in vitro conditions. Antibiotics were also tested under similar conditions against all tested bacteria using the disc diffusion method. The results show that among 32 bacterial strains trans-cinnamic acid exhibited potent inhibitory effect on the Gram-negative fish pathogen Aeromonas sobria. In addition, a moderate inhibition of trans-cinnamic acid of fish pathogens Aeromonas salmonicida, Vibrio (Listonella) anguillarum, Vibrio crassostreae and Yersinia ruckeri was also observed for trans-cinnamic acid in our study. On the contrary, the majority of nonpathogenic intestinal isolates were resistant to trans-cinnamic acid. CONCLUSIONS To the best of our knowledge, this is the first report on the antimicrobial activity of trans-cinnamic acid on 24 of the studied bacteria isolated from fish. In conclusion, trans-cinnamic acid can be used as an environmentally friendly alternative additive to prevent and control primarily A. sobria, as well as other pathogenic bacteria such as A. salmonicida, V. anguillarum, V. crassostreae and Y. ruckeri. SIGNIFICANCE AND IMPACT OF THE STUDY This study indicated that trans-cinnamic acid may present an environmentally friendly alternative therapeutic agent against A. sobria infections in the aquaculture industry.
Collapse
Affiliation(s)
- S Yilmaz
- Department of Aquaculture, Faculty of Marine Sciences and Technology, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - M Sova
- Faculty of Pharmacy, University of Ljubljana, Ljubljana, Slovenia
| | - S Ergün
- Department of Aquaculture, Faculty of Marine Sciences and Technology, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| |
Collapse
|
32
|
Elansary HO, Abdelgaleil SAM, Mahmoud EA, Yessoufou K, Elhindi K, El-Hendawy S. Effective antioxidant, antimicrobial and anticancer activities of essential oils of horticultural aromatic crops in northern Egypt. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 18:214. [PMID: 30005652 PMCID: PMC6044011 DOI: 10.1186/s12906-018-2262-1] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 06/18/2018] [Indexed: 12/12/2022]
Abstract
Background Identifying ornamental plants as new natural antioxidant and antimicrobial sources is always of great importance for the ornamental and horticultural industries. Methods The antimicrobial activities of leaves and fruits peel essential oils of twelve ornamental and horticultural crops were determined by screening against wide spectrum of fungi and bacteria, and their respective in vitro antioxidant capacity was evaluated. Furthermore, the anticancer activities against several cancer cells, and one normal human cell line (HEK-293) were examined. Results Origanum vulgare L. essential oil showed the best antioxidant, antibacterial and anticancer activities compared to screened crops by means of the DPPH and linoleic acid assays for antioxidants, MIC and MBC values for antibacterial activities and IC50 for antiproliferative activities. Such important activities in O. vulgare was attributed to high pulegone ratio (77.45%) as revealed by the GC/MS assay. Rosmarinus officinallis L. essential oil showed the highest antifungal activities by means of lowest MIC and MFC values which might be attributed to 1, 8-cineole (19.60%), camphor (17.01%) and α-pinene (15.12%). Conclusion We suggest that oxygenated monoterpenes (i.e. linalool, terpinen-4-ol and pulegone) and monoterpene hydrocarbons play an important role in the essential oil antioxidant, antibacterial, antifungal and anticancer activities of diverse Egyptian ornamental and horticultural crops. Some species showed bioactivities similar to standards compounds and might be suitable for pharmaceutical and food industries.
Collapse
|
33
|
Poutaraud A, Michelot-Antalik A, Plantureux S. Grasslands: A Source of Secondary Metabolites for Livestock Health. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:6535-6553. [PMID: 28704611 DOI: 10.1021/acs.jafc.7b00425] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The need for environmentally friendly practices in animal husbandry, in conjunction with the reduction of the use of synthetic chemicals, leads us to reconsider our agricultural production systems. In that context, grassland secondary metabolites (GSMs) could offer an alternative way to support to livestock health. In fact, grasslands, especially those with high dicotyledonous plant species, present a large, pharmacologically active reservoir of secondary metabolites (e.g., phenolic compounds, alkaloids, saponins, terpenoids, carotenoids, and quinones). These molecules have activities that could improve or deteriorate health and production. This Review presents the main families of GSMs and uses examples to describe their known impact on animal health in husbandry. Techniques involved for their study are also described. A particular focus is put on anti-oxidant activities of GSMs. In fact, numerous husbandry pathologies, such as inflammation, are linked to oxidative stress and can be managed by a diet rich in anti-oxidants. The different approaches and techniques used to evaluate grassland quality for livestock health highlight the lack of efficient and reliable technics to study the activities of this complex phytococktail. Better knowledge and management of this animal health resource constitute a new multidisciplinary research field and a challenge to maintain and valorize grasslands.
Collapse
Affiliation(s)
- Anne Poutaraud
- Laboratoire Agronomie et Environnement, INRA , UMR 1121, Colmar, 29 rue de Herrlisheim, F-68021 Colmar Cedex, France
| | - Alice Michelot-Antalik
- Laboratoire Agronomie et Environnement, Université de Lorraine , UMR 1121, 2 Avenue de la forêt de Haye - TSA 40602, F-54518 Vandœuvre-lès-Nancy Cedex, France
| | - Sylvain Plantureux
- Laboratoire Agronomie et Environnement, Université de Lorraine , UMR 1121, 2 Avenue de la forêt de Haye - TSA 40602, F-54518 Vandœuvre-lès-Nancy Cedex, France
| |
Collapse
|
34
|
Chaib F, Allali H, Bennaceur M, Flamini G. Chemical Composition and Antimicrobial Activity of Essential Oils from the Aerial Parts of Asteriscus graveolens
(Forssk
.) Less
. and Pulicaria incisa
(Lam
.) DC.: Two Asteraceae Herbs Growing Wild in the Hoggar. Chem Biodivers 2017; 14. [DOI: 10.1002/cbdv.201700092] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 04/28/2017] [Indexed: 01/22/2023]
Affiliation(s)
- Faiza Chaib
- Laboratoire des Substances Naturelles & Bioactives (LASNABIO); Département de Chimie; Faculté des Sciences; Université Abou Bekr Belkaïd; BP 119 Tlemcen 13000 Algérie
- Laboratoire de Biochimie Végétale; Département de Biologie; Faculté des Sciences de la Nature et de la Vie; Université Oran1 Ahmed Benbella; Oran Algérie
| | - Hocine Allali
- Laboratoire des Substances Naturelles & Bioactives (LASNABIO); Département de Chimie; Faculté des Sciences; Université Abou Bekr Belkaïd; BP 119 Tlemcen 13000 Algérie
| | - Malika Bennaceur
- Laboratoire de Biochimie Végétale; Département de Biologie; Faculté des Sciences de la Nature et de la Vie; Université Oran1 Ahmed Benbella; Oran Algérie
| | - Guido Flamini
- Dipartimento di Farmacia; Università di Pisa; Via Bonanno IT-56126 Pisa
| |
Collapse
|