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Mahdavi P, Aliakbarlu J. Antibiofilm Effect of Sequential Application of Ozonated Water, Acetic Acid and Lactic Acid on Salmonella Typhimurium and Staphylococcus aureus Biofilms In Vitro. J Food Prot 2024; 87:100336. [PMID: 39074613 DOI: 10.1016/j.jfp.2024.100336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 07/19/2024] [Accepted: 07/24/2024] [Indexed: 07/31/2024]
Abstract
Biofilms are highly resistant to disinfectants and antimicrobials and are known as the primary source of food contamination. Salmonella Typhimurium (S. Typhimurium) and Staphylococcus aureus (S. aureus) have an excellent ability to form biofilm. This study aimed to evaluate the antibiofilm activity of ozonated water (O), acetic acid (AA), and lactic acid (LA), individually and sequentially, against biofilms of S. Typhimurium and S. aureus formed on the polystyrene surfaces. The antibiofilm effects of the treatments were evaluated using crystal violet staining and the viable count determination methods. In the staining method, the highest percentage of biofilm mass reduction was induced by successive use of ozonated water and acetic acid (O-AA), which reduced S. aureus biofilm mass by 44.36%. The sequential use of ozonated water and lactic acid (O-LA) could decrease S. Typhimurium biofilm mass by 57.26%. According to the viable count method, the most effective treatment was the sequential use of ozonated water and lactic acid (O-LA), which reduced S. aureus and S. Typhimurium biofilms by 1.76 and 4.06 log, respectively. It was concluded that the sequential use of ozonated water and organic acids can be considered a practical and environmentally friendly approach to control biofilms.
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Affiliation(s)
- Parvin Mahdavi
- Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Urmia University, Urmia 5756151818, Iran
| | - Javad Aliakbarlu
- Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Urmia University, Urmia 5756151818, Iran.
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2
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Wan Q, Zhang H, Bao H, Zhu S, Wu L, Wang R, Zhou Y. Efficacy of a lytic bacteriophage vB_EcoM_SQ17 against Enterohemorrhagic Escherichia coli O157:H7 and Enterotoxigenic E. coli biofilms on cucumber. Microb Pathog 2024; 194:106832. [PMID: 39089511 DOI: 10.1016/j.micpath.2024.106832] [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: 01/25/2024] [Revised: 07/25/2024] [Accepted: 07/29/2024] [Indexed: 08/04/2024]
Abstract
Enterohemorrhagic Escherichia coli O157:H7 (EHEC O157:H7) and Enterotoxigenic E. coli (ETEC) have been found to readily develop biofilms on cucumber (Cucumis sativus L.), presenting a significant risk to the safety of ready-to-eat vegetables. This study aimed to assess the effectiveness of the lytic bacteriophage vB_EcoM_SQ17 (SQ17) against EHEC O157:H7 and ETEC biofilms on cucumber. Here, we evaluated the efficacy of phage SQ17 on the formation and reduction of biofilms formed by EHEC O157:H7 and ETEC strains on various surfaces, including polystyrene, poly-d-lysine precoated films, and fresh-cut cucumber, at different temperatures. Phage SQ17 significantly inhibited ETEC biofilm formation, reducing the number of adhered cells by 0.15 log CFU/mL at 37 °C. Treatment with phage SQ17 also significantly decreased the number of adhered cells in established biofilms via SEM observation. Moreover, phage SQ17 effectively reduced the biomass of EHEC O157:H7 and ETEC biofilms by over 54.8 % at 37 °C after 24 h of incubation. Following phage treatment, the viability of adhered EHEC O157:H7 cells decreased by 1.37 log CFU/piece and 0.46 log CFU/piece in biofilms on cucumber at 4 °C and 25 °C, respectively. Similarly, the viability of ETEC cells decreased by 1.07 log CFU/piece and 0.61 log CFU/piece in biofilms on cucumber at 4 °C and 25 °C, respectively. These findings suggest that phage SQ17 shows promise as a potential strategy for eradicating pathogenic E. coli biofilms on cucumber.
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Affiliation(s)
- Qiyang Wan
- Institute of Food Safety and Nutrition, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Ministry of Science and Technology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Hui Zhang
- Institute of Food Safety and Nutrition, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Ministry of Science and Technology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Hongduo Bao
- Institute of Food Safety and Nutrition, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Ministry of Science and Technology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Shujiao Zhu
- Institute of Food Safety and Nutrition, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Ministry of Science and Technology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Liting Wu
- Institute of Food Safety and Nutrition, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Ministry of Science and Technology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Ran Wang
- Institute of Food Safety and Nutrition, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Ministry of Science and Technology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Yan Zhou
- Institute of Food Safety and Nutrition, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Ministry of Science and Technology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China.
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Li J, Zhang Q, Zhao J, Zhang H, Chen W. Lactobacillus-derived components for inhibiting biofilm formation in the food industry. World J Microbiol Biotechnol 2024; 40:117. [PMID: 38429597 DOI: 10.1007/s11274-024-03933-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 02/19/2024] [Indexed: 03/03/2024]
Abstract
Biofilm, a microbial community formed by especially pathogenic and spoilage bacterial species, is a critical problem in the food industries. It is an important cause of continued contamination by foodborne pathogenic bacteria. Therefore, removing biofilm is the key to solving the high pollution caused by foodborne pathogenic bacteria in the food industry. Lactobacillus, a commonly recognized probiotic that is healthy for consumer, have been proven useful for isolating the potential biofilm inhibitors. However, the addition of surface components and metabolites of Lactobacillus is not a current widely adopted biofilm control strategy at present. This review focuses on the effects and preliminary mechanism of action on biofilm inhibition of Lactobacillus-derived components including lipoteichoic acid, exopolysaccharides, bacteriocins, secreted protein, organic acids and some new identified molecules. Further, the review discusses several modern biofilm identification techniques and particularly interesting new technology of biofilm inhibition molecules. These molecules exhibit stronger inhibition of biofilm formation, playing a pivotal role in food preservation and storage. Overall, this review article discusses the application of biofilm inhibitors produced by Lactobacillus, which would greatly aid efforts to eradicate undesirable bacteria from environment in the food industries.
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Affiliation(s)
- Jiaxun Li
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Qiuxiang Zhang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, 214122, China.
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China.
| | - Jianxin Zhao
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Hao Zhang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
- National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Wei Chen
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
- National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, Jiangsu, 214122, China
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Song K, Chen L, Suo N, Kong X, Li J, Wang T, Song L, Cheng M, Guo X, Huang Z, Huang Z, Yang Y, Tian X, Choo SW. Whole-transcriptome analysis reveals mechanisms underlying antibacterial activity and biofilm inhibition by a malic acid combination (MAC) in Pseudomonas aeruginosa. PeerJ 2023; 11:e16476. [PMID: 38084141 PMCID: PMC10710775 DOI: 10.7717/peerj.16476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 10/26/2023] [Indexed: 12/18/2023] Open
Abstract
Background Pseudomonas aeruginosa is a highly prevalent bacterial species known for its ability to cause various infections and its remarkable adaptability and biofilm-forming capabilities. In earlier work, we conducted research involving the screening of 33 metabolites obtained from a commercial source against two prevalent bacterial strains, Escherichia coli and Staphylococcus aureus. Through screening assays, we discovered a novel malic acid combination (MAC) consisting of malic acid, citric acid, glycine, and hippuric acid, which displayed significant inhibitory effects. However, the precise underlying mechanism and the potential impact of the MAC on bacterial biofilm formation remain unknown and warrant further investigation. Methods To determine the antibacterial effectiveness of the MAC against Pseudomonas aeruginosa, we conducted minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) assays. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) techniques were employed to observe bacterial morphology and biofilm formation. We further performed a biofilm inhibition assay to assess the effect of the MAC on biofilm formation. Whole-transcriptome sequencing and bioinformatics analysis were employed to elucidate the antibacterial mechanism of the MAC. Additionally, the expression levels of differentially expressed genes were validated using the real-time PCR approach. Results Our findings demonstrated the antibacterial activity of the MAC against P. aeruginosa. SEM analysis revealed that the MAC can induce morphological changes in bacterial cells. The biofilm assay showed that the MAC could reduce biofilm formation. Whole-transcriptome analysis revealed 1093 differentially expressed genes consisting of 659 upregulated genes and 434 downregulated genes, in response to the MAC treatment. Mechanistically, the MAC inhibited P. aeruginosa growth by targeting metabolic processes, secretion system, signal transduction, and cell membrane functions, thereby potentially compromising the survival of this human pathogen. This study provides valuable insights into the antibacterial and antibiofilm activities of the MAC, a synergistic and cost-effective malic acid combination, which holds promise as a potential therapeutic drug cocktail for treating human infectious diseases in the future.
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Affiliation(s)
- Kunping Song
- Wenzhou-Kean University, College of Science, Mathematics and Technology, Wenzhou, Zhejiang, China
| | - Li Chen
- Universiti Malaya, Institute of Biological Sciences, Faculty of Science, Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Nanhua Suo
- Wenzhou-Kean University, College of Science, Mathematics and Technology, Wenzhou, Zhejiang, China
| | - Xinyi Kong
- Wenzhou-Kean University, College of Science, Mathematics and Technology, Wenzhou, Zhejiang, China
| | - Juexi Li
- Wenzhou-Kean University, College of Science, Mathematics and Technology, Wenzhou, Zhejiang, China
| | - Tianyu Wang
- Wenzhou-Kean University, College of Science, Mathematics and Technology, Wenzhou, Zhejiang, China
| | - Lanni Song
- Wenzhou-Kean University, Wenzhou Municipal Key Laboratory for Applied Biomedical and Biopharmaceutical Informatics, Wenzhou, Zhejiang, China
| | - Mengwei Cheng
- Wenzhou-Kean University, Wenzhou Municipal Key Laboratory for Applied Biomedical and Biopharmaceutical Informatics, Wenzhou, Zhejiang, China
| | - Xindian Guo
- Wenzhou No.2 Foreign Language School, Wenzhou, Zhejiang, China
| | - Zhenghe Huang
- Wenzhou No.2 Foreign Language School, Wenzhou, Zhejiang, China
| | - Zichen Huang
- Wenzhou No.2 Foreign Language School, Wenzhou, Zhejiang, China
| | - Yixin Yang
- Wenzhou-Kean University, College of Science, Mathematics and Technology, Wenzhou, Zhejiang, China
- Wenzhou-Kean University, Wenzhou Municipal Key Laboratory for Applied Biomedical and Biopharmaceutical Informatics, Wenzhou, Zhejiang, China
- Wenzhou-Kean University, Zhejiang Bioinformatics International Science and Technology Cooperation Center, Wenzhou, Zhejiang, China
| | - Xuechen Tian
- Wenzhou-Kean University, Wenzhou Municipal Key Laboratory for Applied Biomedical and Biopharmaceutical Informatics, Wenzhou, Zhejiang, China
- Wenzhou-Kean University, Zhejiang Bioinformatics International Science and Technology Cooperation Center, Wenzhou, Zhejiang, China
| | - Siew Woh Choo
- Wenzhou-Kean University, College of Science, Mathematics and Technology, Wenzhou, Zhejiang, China
- Wenzhou-Kean University, Wenzhou Municipal Key Laboratory for Applied Biomedical and Biopharmaceutical Informatics, Wenzhou, Zhejiang, China
- Wenzhou-Kean University, Zhejiang Bioinformatics International Science and Technology Cooperation Center, Wenzhou, Zhejiang, China
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Ji QY, Wang W, Yan H, Qu H, Liu Y, Qian Y, Gu R. The Effect of Different Organic Acids and Their Combination on the Cell Barrier and Biofilm of Escherichia coli. Foods 2023; 12:3011. [PMID: 37628010 PMCID: PMC10453431 DOI: 10.3390/foods12163011] [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: 07/20/2023] [Revised: 08/06/2023] [Accepted: 08/08/2023] [Indexed: 08/27/2023] Open
Abstract
Organic acids are natural antimicrobial compounds commonly used in the food industry. In this study, acetic, lactic, butyric, citric, and malic acid at minimum inhibitory concentrations and their combinations at optimal inhibition concentrations were used to treat E. coli, and the effects on the cell barrier and biofilm of E. coli were evaluated. Acetic acid showed the highest membrane-damaging effect, while citric acid and malic acid could specifically damage the cell wall of E. coli, leading to alkaline phosphatase leakage. The RT-qPCR results showed that organic acids upregulated the membrane-protein-related genes of E. coli, and the combination of organic acids had a wider range of effects than single organic acid treatment. Moreover, organic acids inhibited the formation of E. coli biofilm and cellular activity within the biofilm. This study showed that the combination of organic acids plays a synergistic inhibitory role mainly through multiple destructive effects on the cell barrier and exhibited synergistic anti-biofilm effects. The three-three combination of acetic, lactic acid, and a third organic acid (butyric, citric, or malic) can play a better synergistic antibacterial effect than the two-pair combination of acetic and lactic acid. These findings have implications for the usage, development, and optimization of organic acid combinations.
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Affiliation(s)
| | | | | | | | | | | | - Ruixia Gu
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China; (Q.-Y.J.); (W.W.); (H.Y.); (H.Q.); (Y.L.); (Y.Q.)
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Turco L, Opallo N, Buommino E, De Caro C, Pirozzi C, Mattace Raso G, Lembo F, Coretti L. Zooming into Gut Dysbiosis in Parkinson's Disease: New Insights from Functional Mapping. Int J Mol Sci 2023; 24:ijms24119777. [PMID: 37298727 DOI: 10.3390/ijms24119777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/30/2023] [Accepted: 05/31/2023] [Indexed: 06/12/2023] Open
Abstract
Gut dysbiosis has been involved in the pathogenesis and progression of Parkinson's disease (PD), but the mechanisms through which gut microbiota (GM) exerts its influences deserve further study. Recently, we proposed a two-hit mouse model of PD in which ceftriaxone (CFX)-induced dysbiosis amplifies the neurodegenerative phenotype generated by striatal 6-hydroxydopamine (6-OHDA) injection in mice. Low GM diversity and the depletion of key gut colonizers and butyrate producers were the main signatures of GM alteration in this model. Here, we used the phylogenetic investigation of communities by reconstruction of unobserved states (PICRUSt2) to unravel candidate pathways of cell-to-cell communication associated with dual-hit mice and potentially involved in PD progression. We focused our analysis on short-chain fatty acids (SCFAs) metabolism and quorum sensing (QS) signaling. Based on linear discriminant analysis, combined with the effect size results, we found increased functions linked to pyruvate utilization and a depletion of acetate and butyrate production in 6-OHDA+CFX mice. The specific arrangement of QS signaling as a possible result of the disrupted GM structure was also observed. With this exploratory study, we suggested a scenario in which SCFAs metabolism and QS signaling might represent the effectors of gut dysbiosis potentially involved in the designation of the functional outcomes that contribute to the exacerbation of the neurodegenerative phenotype in the dual-hit animal model of PD.
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Affiliation(s)
- Luigia Turco
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Via Domenico Montesano 49, 80131 Naples, Italy
- Department of Precision Medicine, University of Campania Luigi Vanvitelli, 80138 Naples, Italy
| | - Nicola Opallo
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Via Domenico Montesano 49, 80131 Naples, Italy
| | - Elisabetta Buommino
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Via Domenico Montesano 49, 80131 Naples, Italy
| | - Carmen De Caro
- Department of Science of Health, School of Medicine, University Magna Graecia of Catanzaro, Viale Europa, 88100 Catanzaro, Italy
| | - Claudio Pirozzi
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Via Domenico Montesano 49, 80131 Naples, Italy
| | - Giuseppina Mattace Raso
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Via Domenico Montesano 49, 80131 Naples, Italy
- Task Force on Microbiome Studies, University of Naples Federico II, 80100 Naples, Italy
| | - Francesca Lembo
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Via Domenico Montesano 49, 80131 Naples, Italy
- Task Force on Microbiome Studies, University of Naples Federico II, 80100 Naples, Italy
| | - Lorena Coretti
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Via Domenico Montesano 49, 80131 Naples, Italy
- Task Force on Microbiome Studies, University of Naples Federico II, 80100 Naples, Italy
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Swebocki T, Barras A, Abderrahmani A, Haddadi K, Boukherroub R. Deep Eutectic Solvents Comprising Organic Acids and Their Application in (Bio)Medicine. Int J Mol Sci 2023; 24:ijms24108492. [PMID: 37239842 DOI: 10.3390/ijms24108492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 05/04/2023] [Accepted: 05/05/2023] [Indexed: 05/28/2023] Open
Abstract
Over the last years, we observed a significant increase in the number of published studies that focus on the synthesis and characterization of deep eutectic solvents (DESs). These materials are of particular interest mainly due to their physical and chemical stability, low vapor pressure, ease of synthesis, and the possibility of tailoring their properties through dilution or change of the ratio of parent substances (PS). DESs, considered as one of the greenest families of solvents, are used in many fields, such as organic synthesis, (bio)catalysis, electrochemistry, and (bio)medicine. DESs applications have already been reported in various review articles. However, these reports mainly described these components' basics and general properties without focusing on the particular, PS-wise, group of DESs. Many DESs investigated for potential (bio)medical applications comprise organic acids. However, due to the different aims of the reported studies, many of these substances have not yet been investigated thoroughly, which makes it challenging for the field to move forward. Herein, we propose distinguishing DESs comprising organic acids (OA-DESs) as a specific group derived from natural deep eutectic solvents (NADESs). This review aims to highlight and compare the applications of OA-DESs as antimicrobial agents and drug delivery enhancers-two essential fields in (bio)medical studies where DESs have already been implemented and proven their potential. From the survey of the literature data, it is evident that OA-DESs represent an excellent type of DESs for specific biomedical applications, owing to their negligible cytotoxicity, fulfilling the rules of green chemistry and being generally effective as drug delivery enhancers and antimicrobial agents. The main focus is on the most intriguing examples and (where possible) application-based comparison of particular groups of OA-DESs. This should highlight the importance of OA-DESs and give valuable clues on the direction the field can take.
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Affiliation(s)
- Tomasz Swebocki
- Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520-IEMN-Institut d'Electronique de Microélectronique et de Nanotechnologie, 59000 Lille, France
| | - Alexandre Barras
- Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520-IEMN-Institut d'Electronique de Microélectronique et de Nanotechnologie, 59000 Lille, France
| | - Amar Abderrahmani
- Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520-IEMN-Institut d'Electronique de Microélectronique et de Nanotechnologie, 59000 Lille, France
| | - Kamel Haddadi
- Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520-IEMN-Institut d'Electronique de Microélectronique et de Nanotechnologie, 59000 Lille, France
| | - Rabah Boukherroub
- Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520-IEMN-Institut d'Electronique de Microélectronique et de Nanotechnologie, 59000 Lille, France
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8
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Kewlani P, Tiwari D, Rawat S, Bhatt ID. Pharmacological and phytochemical potential of Rubus ellipticus: a wild edible with multiple health benefits. J Pharm Pharmacol 2023; 75:143-161. [PMID: 36206171 DOI: 10.1093/jpp/rgac053] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 06/28/2022] [Indexed: 11/12/2022]
Abstract
OBJECTIVES Rubus ellipticus (family Rosaceae) is used for its delicious edible fruits in the Himalayan region and other parts of the globe. However, the full potential of the species is yet to be harnessed. The current review focuses on the phytochemical, traditional uses, morphological, molecular and pharmacological potential of R. ellipticus. KEY FINDINGS The review of the literature reveals that many health-promoting compounds of R. ellipticus have been reported from the species along with the different biological properties, such as nephroprotective, anti-inflammatory, analgesic, anti-pyretic, anti-proliferative, cytotoxicity, anti-cancer, wound healing, anti-fertility, anti-plasmodial, anti-microbial and antioxidant. Traditionally, it is used in many formulations, which are validated through primary pharmacological assays. However, several medicinal properties are still need to be validated through detailed pharmacological and clinical studies. SUMMARY All the information is available in a scanty form, and the complete information is missing on a single platform. Such type of information will help researchers to better utilize the available data for initiating future research on the species as it has the potential to contribute to the food and pharmaceutical industry. The review highlights the need for further studies on the species to harness its potential in nutraceutical, functional food, energy supplement, and beneficial therapeutic drug development program.
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Affiliation(s)
- Pushpa Kewlani
- Centre for Biodiversity Conservation and Management, G.B. Pant National Institute of Himalayan Environment, Kosi-Katarmal, Almora, Uttarakhand, India
| | - Deepti Tiwari
- Centre for Biodiversity Conservation and Management, G.B. Pant National Institute of Himalayan Environment, Kosi-Katarmal, Almora, Uttarakhand, India
| | - Sandeep Rawat
- Sikkim Regional Centre, G.B. Pant National Institute of Himalayan Environment, Pangthang, Gangtok, Sikkim, India
| | - Indra D Bhatt
- Centre for Biodiversity Conservation and Management, G.B. Pant National Institute of Himalayan Environment, Kosi-Katarmal, Almora, Uttarakhand, India
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9
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Wang Y, Xu S, He Q, Sun K, Wang X, Zhang X, Li Y, Zeng J. Crosstalk between microbial biofilms in the gastrointestinal tract and chronic mucosa diseases. Front Microbiol 2023; 14:1151552. [PMID: 37125198 PMCID: PMC10133492 DOI: 10.3389/fmicb.2023.1151552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 03/16/2023] [Indexed: 05/02/2023] Open
Abstract
The gastrointestinal (GI) tract is the largest reservoir of microbiota in the human body; however, it is still challenging to estimate the distribution and life patterns of microbes. Biofilm, as the predominant form in the microbial ecosystem, serves ideally to connect intestinal flora, molecules, and host mucosa cells. It gives bacteria the capacity to inhabit ecological niches, communicate with host cells, and withstand environmental stresses. This study intends to evaluate the connection between GI tract biofilms and chronic mucosa diseases such as chronic gastritis, inflammatory bowel disease, and colorectal cancer. In each disease, we summarize the representative biofilm makers including Helicobacter pylori, adherent-invasive Escherichia coli, Bacteroides fragilis, and Fusobacterium nucleatum. We address biofilm's role in causing inflammation and the pro-carcinogenic stage in addition to discussing the typical resistance, persistence, and recurrence mechanisms seen in vitro. Biofilms may serve as a new biomarker for endoscopic and pathologic detection of gastrointestinal disease and suppression, which may be a useful addition to the present therapy strategy.
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Affiliation(s)
- Yumeng Wang
- West China-PUMC C.C. Chen Institute of Health, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China
| | - Shixi Xu
- West China-PUMC C.C. Chen Institute of Health, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China
| | - Qiurong He
- West China-PUMC C.C. Chen Institute of Health, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China
| | - Kun Sun
- West China-PUMC C.C. Chen Institute of Health, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China
| | - Xiaowan Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Xiaorui Zhang
- West China-PUMC C.C. Chen Institute of Health, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China
| | - Yuqing Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
- *Correspondence: Yuqing Li,
| | - Jumei Zeng
- West China-PUMC C.C. Chen Institute of Health, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China
- Jumei Zeng,
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10
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Krukiewicz K, Kazek-Kęsik A, Brzychczy-Włoch M, Łos MJ, Ateba CN, Mehrbod P, Ghavami S, Shyntum DY. Recent Advances in the Control of Clinically Important Biofilms. Int J Mol Sci 2022; 23:9526. [PMID: 36076921 PMCID: PMC9455909 DOI: 10.3390/ijms23179526] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 08/17/2022] [Accepted: 08/20/2022] [Indexed: 11/16/2022] Open
Abstract
Biofilms are complex structures formed by bacteria, fungi, or even viruses on biotic and abiotic surfaces, and they can be found in almost any part of the human body. The prevalence of biofilm-associated diseases has increased in recent years, mainly because of the frequent use of indwelling medical devices that create opportunities for clinically important bacteria and fungi to form biofilms either on the device or on the neighboring tissues. As a result of their resistance to antibiotics and host immunity factors, biofilms have been associated with the development or persistence of several clinically important diseases. The inability to completely eradicate biofilms drastically increases the burden of disease on both the patient and the healthcare system. Therefore, it is crucial to develop innovative ways to tackle the growth and development of biofilms. This review focuses on dental- and implant-associated biofilm infections, their prevalence in humans, and potential therapeutic intervention strategies, including the recent advances in pharmacology and biomedical engineering. It lists current strategies used to control the formation of clinically important biofilms, including novel antibiotics and their carriers, antiseptics and disinfectants, small molecule anti-biofilm agents, surface treatment strategies, and nanostructure functionalization, as well as multifunctional coatings particularly suitable for providing antibacterial effects to the surface of implants, to treat either dental- or implant-related bacterial infections.
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Affiliation(s)
- Katarzyna Krukiewicz
- Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, M. Strzody 9, 44-100 Gliwice, Poland
- Centre for Organic and Nanohybrid Electronics, Silesian University of Technology, Konarskiego 22B, 44-100 Gliwice, Poland
| | - Alicja Kazek-Kęsik
- Department of Inorganic Chemistry, Analytical Chemistry and Electrochemistry, Silesian University of Technology, 44-100 Gliwice, Poland
- Biotechnology Centre, Silesian University of Technology, Krzywoustego 8 Street, 44-100 Gliwice, Poland
| | - Monika Brzychczy-Włoch
- Department of Molecular Medical Microbiology, Chair of Microbiology, Faculty of Medicine, Jagiellonian University Medical College, Czysta 18 Street, 31-121 Krakow, Poland
| | - Marek J. Łos
- Department of Pathology, Pomeranian Medical University, 71-344 Szczecin, Poland
| | - Collins Njie Ateba
- Food Security and Safety Niche Area, North West University, Private Bag X2046, Mahikeng 2735, South Africa
| | - Parvaneh Mehrbod
- Influenza and Respiratory Viruses Department, Pasteur Institute of Iran, Tehran 1316943551, Iran
| | - Saeid Ghavami
- Faculty of Medicine in Zabrze, University of Technology in Katowice, Academia of Silesia, 41-800 Zabrze, Poland
- Research Institute of Oncology and Hematology, Cancer Care Manitoba-University of Manitoba, Winnipeg, MB R3E 3P5, Canada
- Biology of Breathing Theme, Children Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, MB R3E 3P5, Canada
- Department of Human Anatomy and Cell Science, University of Manitoba College of Medicine, Winnipeg, MB R3E 3P5, Canada
| | - Divine Yufetar Shyntum
- Biotechnology Centre, Silesian University of Technology, Krzywoustego 8 Street, 44-100 Gliwice, Poland
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11
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Hashim S, Waqas M, Rudra RP, Akhtar Khan A, Mirani AA, Sultan T, Ehsan F, Abid M, Saifullah M. On-Farm Composting of Agricultural Waste Materials for Sustainable Agriculture in Pakistan. SCIENTIFICA 2022; 2022:5831832. [PMID: 35979342 PMCID: PMC9377972 DOI: 10.1155/2022/5831832] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 07/02/2022] [Accepted: 07/22/2022] [Indexed: 06/15/2023]
Abstract
Agriculture is the economic backbone of Pakistan. 67% of country's population resides in rural areas and primarily depends on agriculture. Pakistan's soils are poor in OM and have a low C : N ratio, and the overall fertility status is insufficient to support increased crop yields. Compost is an excellent alternative solution for improving soil OM content. However, this excellent alternative supply in Pakistan has yet to be used. Mass volumes of leaves, grass clippings, plant stalks, vines, weeds, twigs, and branches are burned daily. In this study, different compost piles (P1, P2, and P3) of compost were made using different agricultural and animal waste combinations to assess temperature, pH, and NPK. Results revealed that P3 demonstrated the most successful composting procedure. The temperature and pH levels throughout the composting process were determined in a specified range of 42-45oC and 6.1-8.3, respectively. Total nitrogen content ranged from 81.5 to 2175 ppm in farm compost. Total phosphorus concentrations range from 1.33 to 13.98 ppm, and potassium levels, on the other hand, range from 91.53 to 640 ppm in farm compost. The overall nitrogen concentration grew progressively between each pile at the end of a week. The varied concentrations revealed that adding various forms of agricultural waste would result in a variation in the quantity of NPK owing to microbial activity. On-farm composting has emerged as an effective technique for the sustainability of agricultural activities, capable of resolving crucial problems like crop residues and livestock waste disposal. Based on this study's results, the pile (P3) combination shows the best NPK value performance and is recommended for agricultural uses to overcome the OM deficiency.
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Affiliation(s)
- Sarfraz Hashim
- Department of Agricultural Engineering, Muhammad Nawaz Shareef University of Agriculture, Multan 66000, Pakistan
| | - Muhammad Waqas
- Department of Agricultural Engineering, Muhammad Nawaz Shareef University of Agriculture, Multan 66000, Pakistan
| | | | - Alamgir Akhtar Khan
- Department of Agricultural Engineering, Muhammad Nawaz Shareef University of Agriculture, Multan 66000, Pakistan
| | - Asif Ali Mirani
- Director Agri. Mechanization, Agricultural Engineering Division, Pakistan Agricultural Research Council, Islamabad, Pakistan
| | - Tariq Sultan
- Director Agri. Mechanization, Agricultural Engineering Division, Pakistan Agricultural Research Council, Islamabad, Pakistan
| | - Farrukh Ehsan
- Department of Agricultural Engineering, Muhammad Nawaz Shareef University of Agriculture, Multan 66000, Pakistan
| | - Muhammad Abid
- Department of Agricultural Engineering, Muhammad Nawaz Shareef University of Agriculture, Multan 66000, Pakistan
| | - Muhammad Saifullah
- Department of Agricultural Engineering, Muhammad Nawaz Shareef University of Agriculture, Multan 66000, Pakistan
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12
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NMR-based metabolomic investigation on antimicrobial mechanism of Salmonella on cucumber slices treated with organic acids. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.108973] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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13
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Liu Z, Sheng L, Canakapalli SS, Wang L. Evaluation of the microbial control efficacies of commonly used home-drying and storage practices of dried peaches. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113734] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Austin PD, Stapleton P, Elia M. Comparative effect of seven prophylactic locks to prevent biofilm biomass and viability in intravenous catheters. J Antimicrob Chemother 2022; 77:2191-2198. [PMID: 35723966 DOI: 10.1093/jac/dkac181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 05/06/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Patients requiring long-term intravenous access are at risk of intraluminal catheter bloodstream infection. 'Prophylactic' locks aim to limit this risk but there is uncertainty regarding the most effective lock. OBJECTIVES To develop a novel technique intended to replicate clinical procedures to compare the effectiveness of various 'prophylactic' locks against biofilm biomass ('biomass') formation and biofilm viability ('viability') of Escherichia coli and Staphylococcus epidermidis in intravenous catheters. METHODS For 10 consecutive days 106 cfu/mL E. coli NCTC 10418 and S. epidermidis ATCC 12228 were separately cultured in single lumen 9.6 French silicone tunnelled and cuffed catheters. These were flushed with 0.9% w/v sodium chloride using a push-pause technique before and after instillation of seven 'prophylactic' locks (water, ethanol, sodium chloride, heparinized sodium chloride, citrate, taurolidine plus citrate, and taurolidine; each in triplicate) for 6 h daily. Intraluminal 'biomass' and 'viability' were quantified using crystal violet staining and flush culture, respectively. RESULTS The reduction of 'biomass' and 'viability' depended on both agent and species. Citrate was least effective against E. coli 'viability' and 'biomass' but most effective against S. epidermidis 'viability', and taurolidine was most effective against E. coli 'biomass' and 'viability' but least effective against S. epidermidis 'viability'. 'Biomass' and 'viability' were significantly correlated in E. coli between (r = 0.997, P < 0.001) and within (r = 0.754, P = 0.001) interventions, but not in S. epidermidis. CONCLUSIONS A novel technique found the effect of 'prophylactic' agents in reducing 'biomass' and 'viability' varied by species. The choice of agent depends on the most likely infecting organism.
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Affiliation(s)
- Peter David Austin
- UCL School of Pharmacy, University College London, London, UK.,Pharmacy Department, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Paul Stapleton
- UCL School of Pharmacy, University College London, London, UK
| | - Marinos Elia
- Faculty of Medicine, University of Southampton, Southampton, UK
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15
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Abo-Dya NE, Agha KA, Abbas HA, Abu-Kull ME, Alahmdi MI, Osman NA. Hybrid N-Acylcysteines as Dual-Acting Matrix Disruptive and Anti-Quorum Sensing Agents Fighting Pseudomonas aeruginosa Biofilms: Design, Synthesis, Molecular Docking Studies, and In Vitro Assays. ACS OMEGA 2022; 7:19879-19891. [PMID: 35721927 PMCID: PMC9202021 DOI: 10.1021/acsomega.2c01667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 05/24/2022] [Indexed: 05/12/2023]
Abstract
Biofilms facilitate the pathogenesis of life-threatening Pseudomonas aeruginosa infections by coating mucosal surfaces or invasive devices and offer protection from antimicrobial therapy and the host immune response, thus increasing mortality rates and financial burden. Herein, new hybrid N-acylcysteines (NAC) incorporating selected acyl groups from organic acids and their derivatives, which are capable of quenching pathogen quorum sensing (QS) systems, were designed and their antibiofilm activity and anti-QS were evaluated. N-acylcysteines (4a-h) were synthesized and characterized by 1H NMR and 13C NMR, and their purity was confirmed by elemental analyses. N-(4-Hydroxy-3,5-dimethoxybenzoyl)-l-cysteine (4d) and N-(4-methoxybenzoyl)-l-cysteine (4h) showed a higher antibiofilm activity against PAO1 biofilms than the rest of the targets and the standard NAC. They showed 83 and 82% inhibition of biofilms at 5 mM and eradicated mature biofilms at 20 mM concentrations (NAC biofilm inhibition = 66% at 10 mM and minimum biofilm eradication concentration = 40 mM). This was confirmed via visualizing adherent biofilm cells on catheter pieces using scanning electron microscopy. In the same vein, both 4d and 4h showed the highest docking score with the QS signal receptor protein LasR (-7.8), which was much higher than that of NAC (-5) but less than the score of the natural agonist N-(3-oxododecanoyl)-l-homoserine (OdDHL) (-8.5). Target 4h (5 mM) decreased the expression of quorum sensing encoding genes in P. aeruginosa PAO1 strain by 53% for pslA, 47% for lasI and lasR, and 29% for filC, lowered PAO1 pyocyanin production by 76.43%, completely blocked the proteolytic activity of PAO1, and did not affect PAO1 cell viability. Targets 4d and 4h may find applications for the prevention and treatment of biofilm-mediated P. aeruginosa local infections of the skin, eye, and wounds. N-(4-Methoxybenzoyl)-l-cysteine 4h is a promising dual-acting matrix disruptive and anti-QS antibiofilm agent for further investigation and optimization.
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Affiliation(s)
- Nader E. Abo-Dya
- Department
of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Tabuk, Tabuk 71491, Saudi Arabia
- Department
of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
- ,
| | - Khalid A. Agha
- Department
of Organic and Medicinal Chemistry, Faculty of Pharmacy, Fayoum University, Fayoum 63514, Egypt
| | - Hisham A. Abbas
- Department
of Microbiology and Immunology, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
| | - Mansour E. Abu-Kull
- Department
of Medicinal Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
| | - Mohammed Issa Alahmdi
- Department
of Chemistry, Faculty of Science, University
of Tabuk, Tabuk 71491, Saudi Arabia
| | - Nermine A. Osman
- Department
of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
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16
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Combinatorial Therapeutic Strategy of Biogenics Derived from Lactobacillus fermentum PUM and Zingerone Against Pseudomonas aeruginosa PAO1-Induced Surgical Site Infection: an Experimental Study. Probiotics Antimicrob Proteins 2022; 14:712-726. [PMID: 35482245 DOI: 10.1007/s12602-022-09944-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2022] [Indexed: 10/18/2022]
Abstract
Pseudomonas aeruginosa, a WHO-prioritized multidrug-resistant Gram-negative bacteria, is one of the frequently implicated pathogen in surgical site infection (SSI) due to its virulence phenotypes and biofilm-forming ability. In the present study, cell-free supernatant (CFS) and biogenics (organic acids and precipitated protein fraction) of indigenous potential probiotic, Lactobacillus fermentum PUM both alone and in combination with zingerone were found to inhibit pyocyanin, pyochelin, protease, elastase, the virulence factors, and motility of P. aeruginosa PAO1. Furthermore, scanning electron microscopy indicated that biofilm formation was attenuated maximally by CFS of L. fermentum combined with zingerone. In vivo study revealed reduced P. aeruginosa burden, suppuration at surgical site vis-a-vis reduced levels of oxidants, pro-inflammatory cytokines, ameliorated anti-oxidants, and healed infected surgical site compared with counter controls. In totality, combination of L. fermentum PUM-derived biogenics and zingerone could be employed to treat P. aeruginosa-induced SSI that needs to be correlated clinically.
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17
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Escobar-Muciño E, Arenas-Hernández MMP, Luna-Guevara ML. Mechanisms of Inhibition of Quorum Sensing as an Alternative for the Control of E. coli and Salmonella. Microorganisms 2022; 10:884. [PMID: 35630329 PMCID: PMC9143355 DOI: 10.3390/microorganisms10050884] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 04/08/2022] [Accepted: 04/10/2022] [Indexed: 02/05/2023] Open
Abstract
Quorum sensing (QS) is a process of cell-cell communication for bacteria such as E. coli and Salmonella that cause foodborne diseases, with the production, release, and detection of autoinducer (AI) molecules that participate in the regulation of virulence genes. All of these proteins are useful in coordinating collective behavior, the expression of virulence factors, and the pathogenicity of Gram-negative bacteria. In this work, we review the natural or synthetic inhibitor molecules of QS that inactivate the autoinducer and block QS regulatory proteins in E. coli and Salmonella. Furthermore, we describe mechanisms of QS inhibitors (QSIs) that act as competitive inhibitors, being a useful tool for preventing virulence gene expression through the downregulation of AI-2 production pathways and the disruption of signal uptake. In addition, we showed that QSIs have negative regulatory activity of genes related to bacterial biofilm formation on clinical artifacts, which confirms the therapeutic potential of QSIs in the control of infectious pathogens. Finally, we discuss resistance to QSIs, the design of next-generation QSIs, and how these molecules can be leveraged to provide a new antivirulence therapy to combat diseases caused by E. coli or Salmonella.
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Affiliation(s)
- Esmeralda Escobar-Muciño
- Posgrado en Microbiología, Centro de Investigación en Ciencias Microbiológicas, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Ciudad Universitaria, Puebla C.P. 72570, Pue, Mexico;
| | - Margarita M. P. Arenas-Hernández
- Posgrado en Microbiología, Centro de Investigación en Ciencias Microbiológicas, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Ciudad Universitaria, Puebla C.P. 72570, Pue, Mexico;
| | - M. Lorena Luna-Guevara
- Colegío de Ingeniería en Alimentos, Facultad de Ingeniería Química, Benemérita Universidad Autónoma de Puebla, Ciudad Universitaria, Puebla C.P. 72570, Pue, Mexico
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18
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Suriyaprom S, Mosoni P, Leroy S, Kaewkod T, Desvaux M, Tragoolpua Y. Antioxidants of Fruit Extracts as Antimicrobial Agents against Pathogenic Bacteria. Antioxidants (Basel) 2022; 11:602. [PMID: 35326252 PMCID: PMC8945554 DOI: 10.3390/antiox11030602] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 03/13/2022] [Accepted: 03/18/2022] [Indexed: 02/07/2023] Open
Abstract
Fruit is an essential part of the human diet and is of great interest because of its richness in phytochemicals. Various fruit extracts from citrus, berries and pomegranates have been shown to possess a broad spectrum of medicinal properties. Fruit phytochemicals are of considerable interest because of their antioxidant properties involving different mechanisms of action, which can act against different pathogenic bacteria. The antioxidant capacity of fruit phytochemicals involves different kinds of reactions, such as radical scavenging and chelation or complexation of metal ions. The interaction between fruit phytochemicals and bacteria has different repercussions: it disrupts the cell envelope, disturbs cell-cell communication and gene regulation, and suppresses metabolic and enzymatic activities. Consequently, fruit phytochemicals can directly inhibit bacterial growth or act indirectly by modulating the expression of virulence factors, both of which reduce microbial pathogenicity. The aim of this review was to report our current knowledge on various fruit extracts and their major bioactive compounds, and determine the effectiveness of organic acids, terpenes, polyphenols, and other types of phenolic compounds with antioxidant properties as a source of antimicrobial agents.
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Affiliation(s)
- Sureeporn Suriyaprom
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; (S.S.); (T.K.)
- Graduate School, Chiang Mai University, Chiang Mai 50200, Thailand
- Microbiologie Environnement Digestif et Santé (MEDiS) UMR454, INRAE, Université Clermont Auvergne, 63000 Clermont-Ferrand, France; (P.M.); (S.L.)
| | - Pascale Mosoni
- Microbiologie Environnement Digestif et Santé (MEDiS) UMR454, INRAE, Université Clermont Auvergne, 63000 Clermont-Ferrand, France; (P.M.); (S.L.)
| | - Sabine Leroy
- Microbiologie Environnement Digestif et Santé (MEDiS) UMR454, INRAE, Université Clermont Auvergne, 63000 Clermont-Ferrand, France; (P.M.); (S.L.)
| | - Thida Kaewkod
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; (S.S.); (T.K.)
| | - Mickaël Desvaux
- Microbiologie Environnement Digestif et Santé (MEDiS) UMR454, INRAE, Université Clermont Auvergne, 63000 Clermont-Ferrand, France; (P.M.); (S.L.)
| | - Yingmanee Tragoolpua
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; (S.S.); (T.K.)
- Research Center in Bioresources for Agriculture, Industry, and Medicine, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
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19
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Unal Turhan E, Polat S, Erginkaya Z, Konuray G. Investigation of synergistic antibacterial effect of organic acids and ultrasound against pathogen biofilms on lettuce. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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20
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Leggett A, Li DW, Sindeldecker D, Staats A, Rigel N, Bruschweiler-Li L, Brüschweiler R, Stoodley P. Cadaverine Is a Switch in the Lysine Degradation Pathway in Pseudomonas aeruginosa Biofilm Identified by Untargeted Metabolomics. Front Cell Infect Microbiol 2022; 12:833269. [PMID: 35237533 PMCID: PMC8884266 DOI: 10.3389/fcimb.2022.833269] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Accepted: 01/18/2022] [Indexed: 12/16/2022] Open
Abstract
There is a critical need to accurately diagnose, prevent, and treat biofilms in humans. The biofilm forming P. aeruginosa bacteria can cause acute and chronic infections, which are difficult to treat due to their ability to evade host defenses along with an inherent antibiotic-tolerance. Using an untargeted NMR-based metabolomics approach, we identified statistically significant differences in 52 metabolites between P. aeruginosa grown in the planktonic and lawn biofilm states. Among them, the metabolites of the cadaverine branch of the lysine degradation pathway were systematically decreased in biofilm. Exogenous supplementation of cadaverine caused significantly increased planktonic growth, decreased biofilm accumulation by 49% and led to altered biofilm morphology, converting to a pellicle biofilm at the air-liquid interface. Our findings show how metabolic pathway differences directly affect the growth mode in P. aeruginosa and could support interventional strategies to control biofilm formation.
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Affiliation(s)
- Abigail Leggett
- Ohio State Biochemistry Program, The Ohio State University, Columbus, OH, United States
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, United States
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, United States
| | - Da-Wei Li
- Campus Chemical Instrument Center, The Ohio State University, Columbus, OH, United States
| | - Devin Sindeldecker
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, United States
- Biomedical Sciences Graduate Program, The Ohio State University, Columbus, OH, United States
| | - Amelia Staats
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, United States
- Department of Microbiology, The Ohio State University, Columbus, OH, United States
| | - Nicholas Rigel
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, United States
| | - Lei Bruschweiler-Li
- Campus Chemical Instrument Center, The Ohio State University, Columbus, OH, United States
| | - Rafael Brüschweiler
- Ohio State Biochemistry Program, The Ohio State University, Columbus, OH, United States
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, United States
- Campus Chemical Instrument Center, The Ohio State University, Columbus, OH, United States
- Department of Biological Chemistry and Pharmacology, The Ohio State University, Columbus, OH, United States
- *Correspondence: Rafael Brüschweiler, ; Paul Stoodley,
| | - Paul Stoodley
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, United States
- Department of Microbiology, The Ohio State University, Columbus, OH, United States
- Department of Orthopaedics, The Ohio State University, Columbus, OH, United States
- National Biofilm Innovation Centre (NBIC) and National Centre for Advanced Tribology at Southampton (nCATS), Mechanical Engineering, University of Southampton, Southampton, United Kingdom
- *Correspondence: Rafael Brüschweiler, ; Paul Stoodley,
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21
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Ge L, Huang Y, Ma Q, Wang Y, Yang R, Yang X, Chen Y, Miao Y, Zuo Y. Inhibition of endogenous protease activity and protection of histomorphical integrity during refrigerated storage of grass carp fillets by treatment with natural edible di‐ and tri‐carboxylic acids. Int J Food Sci Technol 2022. [DOI: 10.1111/ijfs.15594] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Lihong Ge
- College of Life Science Sichuan Normal University Chengdu China
| | - Yuli Huang
- College of Life Science Sichuan Normal University Chengdu China
| | - Qian Ma
- College of Life Science Sichuan Normal University Chengdu China
| | - Yu Wang
- College of Life Science Sichuan Normal University Chengdu China
| | - Rui Yang
- College of Life Science Sichuan Normal University Chengdu China
| | - Xinyu Yang
- College of Life Science Sichuan Normal University Chengdu China
| | - Yan Chen
- College of Life Science Sichuan Normal University Chengdu China
| | - Yuzhi Miao
- College of Life Science Sichuan Normal University Chengdu China
| | - Yong Zuo
- College of Life Science Sichuan Normal University Chengdu China
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22
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Park T, Im J, Kim AR, Lee D, Jeong S, Yun CH, Han SH. Short-chain fatty acids inhibit the biofilm formation of Streptococcus gordonii through negative regulation of competence-stimulating peptide signaling pathway. J Microbiol 2021; 59:1142-1149. [PMID: 34865199 DOI: 10.1007/s12275-021-1576-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 11/12/2021] [Accepted: 11/12/2021] [Indexed: 12/24/2022]
Abstract
Streptococcus gordonii, a Gram-positive commensal bacterium, is an opportunistic pathogen closely related to initiation and progression of various oral diseases, such as periodontitis and dental caries. Its biofilm formation is linked with the development of such diseases by enhanced resistance against antimicrobial treatment or host immunity. In the present study, we investigated the effect of short-chain fatty acids (SCFAs) on the biofilm formation of S. gordonii. SCFAs, including sodium acetate (NaA), sodium propionate (NaP), and sodium butyrate (NaB), showed an effective inhibitory activity on the biofilm formation of S. gordonii without reduction in bacterial growth. SCFAs suppressed S. gordonii biofilm formation at early time points whereas SCFAs did not affect its preformed biofilm. A quorum-sensing system mediated by competence-stimulating peptide (CSP) is known to regulate biofilm formation of streptococci. Interestingly, SCFAs substantially decreased mRNA expression of comD and comE, which are CSP-sensor and its response regulator responsible for CSP pathway, respectively. Although S. gordonii biofilm formation was enhanced by exogenous synthetic CSP treatment, such effect was not observed in the presence of SCFAs. Collectively, these results suggest that SCFAs have an anti-biofilm activity on S. gordonii through inhibiting comD and comE expression which results in negative regulation of CSP quorum-sensing system. SCFAs could be an effective anti-biofilm agent against S. gordonii for the prevention of oral diseases.
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Affiliation(s)
- Taehwan Park
- Department of Oral Microbiology and Immunology, and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jintaek Im
- Department of Oral Microbiology and Immunology, and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, 08826, Republic of Korea
| | - A Reum Kim
- Department of Oral Microbiology and Immunology, and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, 08826, Republic of Korea
| | - Dongwook Lee
- Department of Oral Microbiology and Immunology, and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sungho Jeong
- Department of Oral Microbiology and Immunology, and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, 08826, Republic of Korea
| | - Cheol-Heui Yun
- Department of Agricultural Biotechnology, and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea.,Institutes of Green Bio Science and Technology, Seoul National University, Pyeongchang, 25354, Republic of Korea
| | - Seung Hyun Han
- Department of Oral Microbiology and Immunology, and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, 08826, Republic of Korea.
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23
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Machado MG, Sencio V, Trottein F. Short-Chain Fatty Acids as a Potential Treatment for Infections: a Closer Look at the Lungs. Infect Immun 2021; 89:e0018821. [PMID: 34097474 PMCID: PMC8370681 DOI: 10.1128/iai.00188-21] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Short-chain fatty acids (SCFAs) are the main metabolites produced by the gut microbiota via the fermentation of complex carbohydrates and fibers. Evidence suggests that SCFAs play a role in the control of infections through direct action both on microorganisms and on host signaling. This review summarizes the main microbicidal effects of SCFAs and discusses studies highlighting the effect of SCFAs in the virulence and viability of microorganisms. We also describe the diverse and complex modes of action of the SCFAs on the immune system in the face of infections with a specific focus on bacterial and viral respiratory infections. A growing body of evidence suggests that SCFAs protect against lung infections. Finally, we present potential strategies that may be leveraged to exploit the biological properties of SCFAs for increasing effectiveness and optimizing patient benefits.
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Affiliation(s)
- Marina Gomes Machado
- Centre d’Infection et d’Immunité de Lille, INSERM U1019, CNRS UMR 9017, University of Lille, CHU Lille, Institut Pasteur de Lille, Lille, France
- Laboratory of Immunopharmacology, Department of Biochemistry and Immunology, ICB, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Valentin Sencio
- Centre d’Infection et d’Immunité de Lille, INSERM U1019, CNRS UMR 9017, University of Lille, CHU Lille, Institut Pasteur de Lille, Lille, France
| | - François Trottein
- Centre d’Infection et d’Immunité de Lille, INSERM U1019, CNRS UMR 9017, University of Lille, CHU Lille, Institut Pasteur de Lille, Lille, France
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24
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Pelissari EMR, Covre KV, do Rosario DKA, de São José JFB. Application of chemometrics to assess the influence of ultrasound and chemical sanitizers on vegetables: Impact on natural microbiota, Salmonella Enteritidis and physicochemical nutritional quality. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111711] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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25
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Liu Y, Wu L, Yan Y, Yang K, Dong P, Luo X, Zhang Y, Zhu L. Lactic Acid and Peroxyacetic Acid Inhibit Biofilm of Escherichia coli O157:H7 Formed in Beef Extract. Foodborne Pathog Dis 2021; 18:744-751. [PMID: 34197219 DOI: 10.1089/fpd.2021.0012] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
The objective of this study was to evaluate the inhibitory effect of lactic acid (LA) and peroxyacetic acid (PAA) on the biofilm formation of Escherichia coli O157:H7 in beef extract (BE). BE medium was used as the growth substrate in this study, to make the control effect closer to the situation of the factory. The biofilm inhibitory efficacy of LA and PAA was tested by using a crystal violet staining assay and microscopic examination. And then, extracellular polymeric substance (EPS) production, metabolic activity, and real-time polymerase chain reaction assay were used to reveal the biofilm inhibition mechanism of LA and PAA. The results showed that both LA and PAA significantly inhibited biofilm formation of E. coli O157:H7 at minimum inhibitory concentrations (MICs) (p < 0.05). At MIC, LA and PAA showed different effects on the biofilm metabolic activity and the EPS production of E. coli O157:H7. Supporting these findings, expression analysis showed that LA significantly suppressed quorum sensing genes (luxS and sdiA) and adhesion genes (flhC), while PAA downregulated the transcription of extracellular polysaccharide synthesis genes (adrB and adrA) and the global regulatory factor csgD. This result revealed that LA and PAA had different biofilm inhibitory mechanisms on E. coli O157:H7; LA inhibited the biofilm formation mainly by inhibiting metabolic activity, while PAA inhibited EPS production. This study provided a theoretical basis for the control of E. coli O157:H7 biofilm in the actual production process.
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Affiliation(s)
- Yunge Liu
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China.,National R&D Center for Beef Processing Technology, Tai'an, Shan, China
| | - Lina Wu
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China.,National R&D Center for Beef Processing Technology, Tai'an, Shan, China
| | - Yuqing Yan
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China.,National R&D Center for Beef Processing Technology, Tai'an, Shan, China
| | - Kehui Yang
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China.,National R&D Center for Beef Processing Technology, Tai'an, Shan, China
| | - Pengcheng Dong
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China.,National R&D Center for Beef Processing Technology, Tai'an, Shan, China
| | - Xin Luo
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China.,National R&D Center for Beef Processing Technology, Tai'an, Shan, China
| | - Yimin Zhang
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China.,National R&D Center for Beef Processing Technology, Tai'an, Shan, China
| | - Lixian Zhu
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China.,National R&D Center for Beef Processing Technology, Tai'an, Shan, China
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26
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Baldewijns S, Sillen M, Palmans I, Vandecruys P, Van Dijck P, Demuyser L. The Role of Fatty Acid Metabolites in Vaginal Health and Disease: Application to Candidiasis. Front Microbiol 2021; 12:705779. [PMID: 34276639 PMCID: PMC8282898 DOI: 10.3389/fmicb.2021.705779] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 05/31/2021] [Indexed: 12/28/2022] Open
Abstract
Although the vast majority of women encounters at least one vaginal infection during their life, the amount of microbiome-related research performed in this area lags behind compared to alternative niches such as the intestinal tract. As a result, effective means of diagnosis and treatment, especially of recurrent infections, are limited. The role of the metabolome in vaginal health is largely elusive. It has been shown that lactate produced by the numerous lactobacilli present promotes health by limiting the chance of infection. Short chain fatty acids (SCFA) have been mainly linked to dysbiosis, although the causality of this relationship is still under debate. In this review, we aim to bring together information on the role of the vaginal metabolome and microbiome in infections caused by Candida. Vulvovaginal candidiasis affects near to 70% of all women at least once in their life with a significant proportion of women suffering from the recurrent variant. We assess the role of fatty acid metabolites, mainly SCFA and lactate, in onset of infection and virulence of the fungal pathogen. In addition, we pinpoint where lack of research limits our understanding of the molecular processes involved and restricts the possibility of developing novel treatment strategies.
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Affiliation(s)
- Silke Baldewijns
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, KU Leuven, Leuven-Heverlee, Belgium
- VIB-KU Leuven Center for Microbiology, Leuven, Belgium
| | - Mart Sillen
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, KU Leuven, Leuven-Heverlee, Belgium
- VIB-KU Leuven Center for Microbiology, Leuven, Belgium
| | - Ilse Palmans
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, KU Leuven, Leuven-Heverlee, Belgium
- VIB-KU Leuven Center for Microbiology, Leuven, Belgium
| | - Paul Vandecruys
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, KU Leuven, Leuven-Heverlee, Belgium
- VIB-KU Leuven Center for Microbiology, Leuven, Belgium
| | - Patrick Van Dijck
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, KU Leuven, Leuven-Heverlee, Belgium
- VIB-KU Leuven Center for Microbiology, Leuven, Belgium
| | - Liesbeth Demuyser
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, KU Leuven, Leuven-Heverlee, Belgium
- VIB-KU Leuven Center for Microbiology, Leuven, Belgium
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27
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Kukushkina EA, Hossain SI, Sportelli MC, Ditaranto N, Picca RA, Cioffi N. Ag-Based Synergistic Antimicrobial Composites. A Critical Review. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1687. [PMID: 34199123 PMCID: PMC8306300 DOI: 10.3390/nano11071687] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/15/2021] [Accepted: 06/21/2021] [Indexed: 12/12/2022]
Abstract
The emerging problem of the antibiotic resistance development and the consequences that the health, food and other sectors face stimulate researchers to find safe and effective alternative methods to fight antimicrobial resistance (AMR) and biofilm formation. One of the most promising and efficient groups of materials known for robust antimicrobial performance is noble metal nanoparticles. Notably, silver nanoparticles (AgNPs) have been already widely investigated and applied as antimicrobial agents. However, it has been proposed to create synergistic composites, because pathogens can find their way to develop resistance against metal nanophases; therefore, it could be important to strengthen and secure their antipathogen potency. These complex materials are comprised of individual components with intrinsic antimicrobial action against a wide range of pathogens. One part consists of inorganic AgNPs, and the other, of active organic molecules with pronounced germicidal effects: both phases complement each other, and the effect might just be the sum of the individual effects, or it can be reinforced by the simultaneous application. Many organic molecules have been proposed as potential candidates and successfully united with inorganic counterparts: polysaccharides, with chitosan being the most used component; phenols and organic acids; and peptides and other agents of animal and synthetic origin. In this review, we overview the available literature and critically discuss the findings, including the mechanisms of action, efficacy and application of the silver-based synergistic antimicrobial composites. Hence, we provide a structured summary of the current state of the research direction and give an opinion on perspectives on the development of hybrid Ag-based nanoantimicrobials (NAMs).
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Affiliation(s)
- Ekaterina A. Kukushkina
- Chemistry Department, University of Bari Aldo Moro, via Orabona 4, 70126 Bari, Italy; (E.A.K.); (S.I.H.); (M.C.S.); (N.D.); (R.A.P.)
- CSGI (Center for Colloid and Surface Science), Chemistry Department, University of Bari, via Orabona 4, 70126 Bari, Italy
| | - Syed Imdadul Hossain
- Chemistry Department, University of Bari Aldo Moro, via Orabona 4, 70126 Bari, Italy; (E.A.K.); (S.I.H.); (M.C.S.); (N.D.); (R.A.P.)
- CSGI (Center for Colloid and Surface Science), Chemistry Department, University of Bari, via Orabona 4, 70126 Bari, Italy
| | - Maria Chiara Sportelli
- Chemistry Department, University of Bari Aldo Moro, via Orabona 4, 70126 Bari, Italy; (E.A.K.); (S.I.H.); (M.C.S.); (N.D.); (R.A.P.)
- CSGI (Center for Colloid and Surface Science), Chemistry Department, University of Bari, via Orabona 4, 70126 Bari, Italy
| | - Nicoletta Ditaranto
- Chemistry Department, University of Bari Aldo Moro, via Orabona 4, 70126 Bari, Italy; (E.A.K.); (S.I.H.); (M.C.S.); (N.D.); (R.A.P.)
- CSGI (Center for Colloid and Surface Science), Chemistry Department, University of Bari, via Orabona 4, 70126 Bari, Italy
| | - Rosaria Anna Picca
- Chemistry Department, University of Bari Aldo Moro, via Orabona 4, 70126 Bari, Italy; (E.A.K.); (S.I.H.); (M.C.S.); (N.D.); (R.A.P.)
- CSGI (Center for Colloid and Surface Science), Chemistry Department, University of Bari, via Orabona 4, 70126 Bari, Italy
| | - Nicola Cioffi
- Chemistry Department, University of Bari Aldo Moro, via Orabona 4, 70126 Bari, Italy; (E.A.K.); (S.I.H.); (M.C.S.); (N.D.); (R.A.P.)
- CSGI (Center for Colloid and Surface Science), Chemistry Department, University of Bari, via Orabona 4, 70126 Bari, Italy
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28
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Sholpan A, Lamas A, Cepeda A, Franco CM. Salmonella spp. quorum sensing: an overview from environmental persistence to host cell invasion. AIMS Microbiol 2021; 7:238-256. [PMID: 34250377 PMCID: PMC8255907 DOI: 10.3934/microbiol.2021015] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 06/22/2021] [Indexed: 12/17/2022] Open
Abstract
Salmonella spp. is one of the main foodborne pathogens around the world. It has a cyclic lifestyle that combines host colonization with survival outside the host, implying that Salmonella has to adapt to different conditions rapidly in order to survive. One of these environments outside the host is the food production chain. In this environment, this foodborne pathogen has to adapt to different stress conditions such as acidic environments, nutrient limitation, desiccation, or biocides. One of the mechanisms used by Salmonella to survive under such conditions is biofilm formation. Quorum sensing plays an important role in the production of biofilms composed of cells from the same microorganism or from different species. It is also important in terms of food spoilage and regulates the pathogenicity and invasiveness of Salmonella by regulating Salmonella pathogenicity islands and flagella. Therefore, in this review, we will discuss the genetic mechanism involved in Salmonella quorum sensing, paying special attention to small RNAs and their post-regulatory activity in quorum sensing. We will further discuss the importance of this cell-to-cell communication mechanism in the persistence and spoilage of Salmonella in the food chain environment and the importance in the communication with microorganisms from different species. Subsequently, we will focus on the role of quorum sensing to regulate the virulence and invasion of host cells by Salmonella and on the interaction between Salmonella and other microbial species. This review offers an overview of the importance of quorum sensing in the Salmonella lifestyle.
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Affiliation(s)
- Amanova Sholpan
- Almaty Technological University, Almaty, Republic of Kazakhstan
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29
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Abdullah, Asghar A, Algburi A, Huang Q, Ahmad T, Zhong H, Javed HU, Ermakov AM, Chikindas ML. Anti-biofilm Potential of Elletaria cardamomum Essential Oil Against Escherichia coli O157:H7 and Salmonella Typhimurium JSG 1748. Front Microbiol 2021; 12:620227. [PMID: 33897636 PMCID: PMC8062866 DOI: 10.3389/fmicb.2021.620227] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 03/15/2021] [Indexed: 11/17/2022] Open
Abstract
Foodborne pathogens, microbial recurrent infections, and antibiotic resistance have driven researchers to explore natural compounds as safe alternative antimicrobials. In this study, the chemical profile, antimicrobial, and mutagenic activities of the Elletaria cardamomum essential oil were investigated. GC-MS analysis identified the major bioactive components as α-terpinyl acetate, 1,8-cineole, linalool acetate, and sabinene, at concentrations of 34.95, 25.30, 8.13, and 5.48% respectively, of the essential oil's content. Regarding antimicrobial activity, the minimum inhibitory concentration of green cardamom essential oil was 1% against Escherichia coli O157:H7 and Pseudomonas aeruginosa ATCC 14213. Green cardamom essential oil, when used at concentrations of 0.015, 0.031, 0.062, and 0.125% (v/v) prevented biofilm formation of Escherichia coli O157:H7 by 64.29, 65.98, 70.41, and 85.59%, respectively. Furthermore, these concentrations inhibited 6.13, 45.50, 49.45, and 100%, respectively, of the Salmonella Typhimurium JSG 1748 biofilm. A mutagenicity assay confirmed that green cardamom essential oil has no demonstrable mutagenic activity against the tested strains. The study's findings suggest that green cardamom derived bioactive compounds are safe organic antimicrobials, effective in controlling biofilm formation by Gram-negative pathogens. Moreover, such compounds could possibly be used in the food industry (e.g., bakery, dairy, meat, and other food products) as a safe alternative to chemical preservatives (antimicrobials) to enhance shelf life by improving the antimicrobial status while at the same time imparting a pleasant and appealing aroma for consumers.
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Affiliation(s)
- Abdullah
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
- Department of Food Science, Rutgers State University, New Brunswick, NJ, United States
- National Institute of Food Science and Technology, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Ali Asghar
- National Institute of Food Science and Technology, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Ammar Algburi
- Department of Food Science, Rutgers State University, New Brunswick, NJ, United States
- Department of Biotechnology, College of Science, University of Diyala, Baqubah, Iraq
| | - Qingrong Huang
- Department of Food Science, Rutgers State University, New Brunswick, NJ, United States
| | - Talha Ahmad
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
| | - Hao Zhong
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
| | - Hafiz U. Javed
- Department of Plant Sciences, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Alexey M. Ermakov
- Center for Agrobiotechnology, Don State Technical University, Rostov-on-Don, Russia
| | - Michael L. Chikindas
- Center for Agrobiotechnology, Don State Technical University, Rostov-on-Don, Russia
- Health Promoting Naturals Laboratory, School of Environmental and Biological Sciences, Rutgers State University, New Brunswick, NJ, United States
- Department of General Hygiene, I.M. Sechenov First Moscow State Medical University, Moscow, Russia
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30
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Cho GL, Ha JW. Synergistic effect of citric acid and xenon light for inactivating foodborne pathogens on spinach leaves. Food Res Int 2021; 142:110210. [PMID: 33773673 DOI: 10.1016/j.foodres.2021.110210] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 01/28/2021] [Accepted: 01/30/2021] [Indexed: 11/16/2022]
Abstract
The aim of this study was to evaluate the synergistic antimicrobial effect of xenon light (XL) and citric acid (CA) combination against Escherichia coli O157:H7, Salmonella Typhimurium, and Listeria monocytogenes on spinach leaves and determine the effect of XL-CA combination on quality of spinach leaves. The XL-CA combined treatment for 8 min synergistically decreased the cell counts of E. coli O157:H7 and S. Typhimurium by 5.25 and 5.05 log CFU/cm2, respectively, and additively decreased the L. monocytogenes cells by 5.02 log unit on spinach. The mechanisms underlying synergistic lethal effect of the XL-CA combination were investigated. Qualitative and quantitative analyses revealed that the bacterial cell membrane damage was strongly associated with the synergistic antimicrobial effect of the XL-CA combination. Additionally, treatment with XL-CA combination for 8 min did not affect the quality attributes (color, total phenol contents, and texture) of spinach leaves. These results suggest that the XL-CA combination treatment can be effectively used to control major pathogens on fresh produce.
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Affiliation(s)
- Ga-Lam Cho
- Department of Food Science and Biotechnology, Global K-Food Research Center, Hankyong National University, Anseong-si 17579, South Korea
| | - Jae-Won Ha
- Department of Food Science and Biotechnology, Global K-Food Research Center, Hankyong National University, Anseong-si 17579, South Korea.
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31
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Cortes-López H, Castro-Rosas J, García-Contreras R, Rodríguez-Zavala JS, González-Pedrajo B, Díaz-Guerrero M, Hernández-Morales J, Muñoz-Cazares N, Soto-Hernández M, Ruíz-Posadas LDM, Castillo-Juárez I. Antivirulence Activity of a Dietary Phytochemical: Hibiscus Acid Isolated from Hibiscus sabdariffa L. Reduces the Virulence of Pseudomonas aeruginosa in a Mouse Infection Model. J Med Food 2021; 24:934-943. [PMID: 33751918 DOI: 10.1089/jmf.2020.0135] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Hibiscus sabdariffa L. (Hs) calyxes, rich in organic acids, are included in diets in different countries. In recent years, some phytochemicals have been shown to reduce bacterial virulence at sublethal concentrations by interfering with quorum sensing (QS) systems. Therefore, in this study the antivirulence properties of Hs calyxes and two γ-lactones (hibiscus acid [HA] and its methyl ester) in Pseudomonas aeruginosa were analyzed. Acetone and methanol extracts of Hs showed anti-QS activity by inhibiting violacein production (60% to 80% with 250 μg/mL). In molecular docking analysis, the γ-lactones registered a good binding score, which suggests strong interaction with the active site of LasR protein. To verify their effect in vitro, they were isolated from Hs and evaluated in six QS-regulated phenotypes, as well as in ExoU toxin that is released by the type III secretion system (T3SS). At 500 μg/mL they reduced alkaline protease (29-52%) and elastase (15-37%) activity, biofilm formation (∼75%), and swarming (50%), but there was no effect on pyocyanin production, hemolytic activity, or type III secretion. In a mouse abscess/necrosis model, HA at sublethal concentrations (15 and 31.2 μg/mL) affected infection establishment and prevented damage and systemic spread. In conclusion, HA is the first molecule identified with antivirulence properties in Hs with the potential to prevent infections caused by P. aeruginosa.
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Affiliation(s)
- Humberto Cortes-López
- Posgrado de Botánica y, Colegio de Postgraduados, Campus Montecillo, Texcoco, Estado de México, México
| | - Javier Castro-Rosas
- Instituto de Ciencias Básicas e Ingeniería, Universidad Autónoma del Estado de Hidalgo, Mineral de la Reforma, Hidalgo, México
| | - Rodolfo García-Contreras
- Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad Nacional Autónoma de México, CDMX, México
| | | | - Bertha González-Pedrajo
- Departamento de Genética Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, CDMX, México
| | - Miguel Díaz-Guerrero
- Departamento de Genética Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, CDMX, México
| | - Javier Hernández-Morales
- Posgrado en Fitosanidad-Fitopatología, Colegio de Postgraduados, Campus Montecillo, Texcoco, Estado de México, México
| | - Naybi Muñoz-Cazares
- Posgrado de Botánica y, Colegio de Postgraduados, Campus Montecillo, Texcoco, Estado de México, México
| | - Marcos Soto-Hernández
- Posgrado de Botánica y, Colegio de Postgraduados, Campus Montecillo, Texcoco, Estado de México, México
| | | | - Israel Castillo-Juárez
- Posgrado de Botánica y, Colegio de Postgraduados, Campus Montecillo, Texcoco, Estado de México, México
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32
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Ait Chait Y, Gunenc A, Hosseinian F, Bendali F. Antipathogenic and probiotic potential of Lactobacillus brevis strains newly isolated from Algerian artisanal cheeses. Folia Microbiol (Praha) 2021; 66:429-440. [PMID: 33709378 DOI: 10.1007/s12223-021-00857-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 02/09/2021] [Indexed: 11/28/2022]
Abstract
From 98 Lactobacillus strains, isolated from Algerian homemade cheeses, 14 (B1-B14) were selected based on their anti-Escherichia coli and anti-Staphylococcus aureus activities. These strains were also tested towards Listeria monocytogenes 161 and Salmonella Typhimurium LT2 and further investigated for their resistance to simulated gastrointestinal digestion, cell surface properties, ability to adhere to HT-29 cells, cholesterol lowering, antioxidant activity, and technological traits. Five isolates (B9, B13, B18, B19, and B38) were active against L. monocytogenes and Salmonella. From them, three isolates, identified as Lactobacillus brevis (B9, B13, and B38) by MALDI-TOF spectrometry and 16S rDNA sequencing, exhibited high tolerance to pancreatic juice, bile salts and acidic juices, high percentages of hydrophobicity (87, 92, and 81%, respectively), auto-aggregation (61, 68, and 72%, respectively), and adherence to HT-29 cells (79, 84, and 74%, respectively), which testify on their potential of colonization of the human intestine. On the other way, the strains B9 and B13 manifested the most relevant antioxidant activity and cholesterol-lowering ability, respectively. L. brevis strains showed low acidifying and good proteolytic activities with noticeable heat tolerance. The results gathered in this study highlighted the richness of Algerian artisanal cheeses on new lactobacilli strains with an excellent probiotic potential and demonstrated that L. brevis, largely used as nonstarter in cheese manufacture, could be exploited also as a probiotic for human use.
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Affiliation(s)
- Yasmina Ait Chait
- Laboratoire de Microbiologie Appliquée, Faculté Des Sciences de La Nature Et de La Vie, Université de Bejaia, 06000, Bejaia, Algeria.,Food Science and Nutrition, Chemistry Department, Carleton University, 1125 Colonel by Drive, Ontario, Ottawa, K1S 5B6, Canada
| | - Aynur Gunenc
- Food Science and Nutrition, Chemistry Department, Carleton University, 1125 Colonel by Drive, Ontario, Ottawa, K1S 5B6, Canada
| | - Farah Hosseinian
- Food Science and Nutrition, Chemistry Department, Carleton University, 1125 Colonel by Drive, Ontario, Ottawa, K1S 5B6, Canada.,Institute of Biochemistry of Carleton University, 209 Nesbitt Biology Building, 1125 Colonel by Drive, Ontario, Ottawa, K1S 5B6, Canada
| | - Farida Bendali
- Laboratoire de Microbiologie Appliquée, Faculté Des Sciences de La Nature Et de La Vie, Université de Bejaia, 06000, Bejaia, Algeria.
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33
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Kim U, Kim JH, Oh SW. Review of multi-species biofilm formation from foodborne pathogens: multi-species biofilms and removal methodology. Crit Rev Food Sci Nutr 2021; 62:5783-5793. [PMID: 33663287 DOI: 10.1080/10408398.2021.1892585] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Multi-species biofilms are ubiquitous worldwide and are a concern in the food industry. Multi-species biofilms have a higher resistance to antimicrobial therapies than mono-species biofilms. In addition, multi-species biofilms can cause severe foodborne diseases. To remove multi-species biofilms, controlling the formation process of extracellular polymeric substances (EPS) and quorum sensing (QS) effects is essential. EPS disruption, inhibition of QS, and disinfection have been utilized to remove multi-species biofilms. This review presents information on the formation and novel removal methods for multi-species biofilms.
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Affiliation(s)
- Unji Kim
- Department of Food and Nutrition, Kookmin University, Seoul, Korea
| | - Jin-Hee Kim
- Department of Food and Nutrition, Kookmin University, Seoul, Korea
| | - Se-Wook Oh
- Department of Food and Nutrition, Kookmin University, Seoul, Korea
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Donatti Leão Alvarenga P, Mileib Vasconcelos C, de São José JFB. Application of Ultrasound Combined with Acetic Acid and Peracetic Acid: Microbiological and Physicochemical Quality of Strawberries. Molecules 2020; 26:molecules26010016. [PMID: 33375142 PMCID: PMC7792923 DOI: 10.3390/molecules26010016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 08/17/2020] [Accepted: 08/21/2020] [Indexed: 11/16/2022] Open
Abstract
This work evaluated the application of organic acids (acetic and peracetic acid) and ultrasound as alternative sanitization methods for improving the microbiological and physicochemical qualities of strawberries. A reduction of up to 2.48 log CFU/g aerobic mesophiles and between 0.89 and 1.45 log CFU/g coliforms at 35 °C was found. For molds and yeasts, significant differences occurred with different treatments and storage time (p < 0.05). Ultrasound treatments in combination with peracetic acid and acetic acid allowed a decimal reduction in molds and yeasts (p < 0.05). All evaluated treatments promoted a significant reduction in the Escherichia coli count (p < 0.05). Scanning electron microscopy revealed fragmented E. coli cells due to treatment with acetic acid and ultrasound. Storage time significantly affected pH, total titratable acidity, total soluble solids and the ratio of the total titratable acidity to the total soluble solids (p < 0.05). Anthocyanin content did not change with treatment or time and generally averaged 13.47 mg anthocyanin/100 g of strawberries on fresh matter. Mass loss was not significantly affected by the applied treatments (p > 0.05). The combination of ultrasound and peracetic acid may be an alternative to chlorine-based compounds to ensure microbiological safety without causing significant changes in the physicochemical characteristics of strawberries.
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Affiliation(s)
- Priscila Donatti Leão Alvarenga
- Postgraduate Program in Nutrition and Health, Federal University of Espírito Santo, Marechal Campos Avenue, Vitória, Espírito Santo 28630, Brazil;
| | - Christiane Mileib Vasconcelos
- Food Biotechnology Laboratory, Vila Velha University, Comissário José Dantas de Melo Avenue, Vila Velha, Espírito Santo 28630, Brazil;
| | - Jackline Freitas Brilhante de São José
- Department of Integrated Health Education, Federal University of Espírito Santo, Marechal Campos Avenue, Vitória, Espírito Santo 28630, Brazil
- Correspondence: ; Tel.: +55–27–3335–7223
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Charoux CMG, Patange AD, Hinds LM, Simpson JC, O'Donnell CP, Tiwari BK. Antimicrobial effects of airborne acoustic ultrasound and plasma activated water from cold and thermal plasma systems on biofilms. Sci Rep 2020; 10:17297. [PMID: 33057158 PMCID: PMC7560612 DOI: 10.1038/s41598-020-74504-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 09/21/2020] [Indexed: 11/26/2022] Open
Abstract
Bacterial biofilms are difficult to inactivate due to their high antimicrobial resistance. Therefore, new approaches are required for more effective bacterial biofilm inactivation. Airborne acoustic ultrasound improves bactericidal or bacteriostatic activity which is safe and environmentally friendly. While, plasma activated water (PAW) is attracting increasing attention due to its strong antimicrobial properties. This study determined efficacy of combined airborne acoustic ultrasound and plasma activated water from both cold and thermal plasma systems in inactivating Escherichia coli K12 biofilms. The application of airborne acoustic ultrasound (15 min) alone was significantly more effective in reducing E. coli counts in 48 and 72 h biofilms compared to 30 min treatment with PAW. The effect of airborne acoustic ultrasound was more pronounced when used in combination with PAW. Airborne acoustic ultrasound treatment for 15 min of the E. coli biofilm followed by treatment with PAW significantly reduced the bacterial count by 2.2-2.62 Log10 CFU/mL when compared to control biofilm treated with distilled water. This study demonstrates that the synergistic effects of airborne acoustic ultrasound and PAW for enhanced antimicrobial effects. These technologies have the potential to prevent and control biofilm formation in food and bio-medical applications.
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Affiliation(s)
- Clémentine M G Charoux
- Department of Food Chemistry and Technology, Teagasc Food Research Centre, Ashtown, Dublin, Ireland
- School of Biosystems and Food Engineering, University College Dublin, Dublin, Ireland
| | - Apurva D Patange
- Department of Food Chemistry and Technology, Teagasc Food Research Centre, Ashtown, Dublin, Ireland.
| | - Laura M Hinds
- Department of Food Chemistry and Technology, Teagasc Food Research Centre, Ashtown, Dublin, Ireland
- School of Biosystems and Food Engineering, University College Dublin, Dublin, Ireland
| | - Jeremy C Simpson
- School of Biology and Environmental Science, University College Dublin, Dublin, Ireland
| | - Colm P O'Donnell
- School of Biosystems and Food Engineering, University College Dublin, Dublin, Ireland
| | - Brijesh K Tiwari
- Department of Food Chemistry and Technology, Teagasc Food Research Centre, Ashtown, Dublin, Ireland
- School of Biosystems and Food Engineering, University College Dublin, Dublin, Ireland
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Deng Z, Luo XM, Liu J, Wang H. Quorum Sensing, Biofilm, and Intestinal Mucosal Barrier: Involvement the Role of Probiotic. Front Cell Infect Microbiol 2020; 10:538077. [PMID: 33102249 PMCID: PMC7546212 DOI: 10.3389/fcimb.2020.538077] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 08/13/2020] [Indexed: 12/11/2022] Open
Abstract
The intestine is a particularly dynamic environment in which the host constantly interacts with trillions of symbiotic bacteria called the microbiota. Using quorum sensing (QS) communication, bacteria can coordinate their social behavior and influence host cell activities in a non-invasive manner. Nowadays, a large amount of research has greatly spurred the understanding of how bacterial QS communication regulates bacterial cooperative behaviors due to coexistence and host-microbe interactions. In this review, we discuss bacterial QS in the gut and its role in biofilm formation. As a biological barrier, the mucosal immune system can effectively prevent pathogenic microorganisms and other immunogenic components from entering the internal environment of the host. We focus on the relationship between biofilm and intestinal mucosal immunity, and how probiotic bacteria may regulate them. This review is to provide a theoretical basis for the development of new techniques including probiotics targeting the intestinal barrier function, thereby improving gut health.
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Affiliation(s)
- Zhaoxi Deng
- Ministry of Education Key Laboratory of Molecular Animal Nutrition, College of Animal Science, Zhejiang University, Hangzhou, China
| | - Xin M. Luo
- Department of Biomedical Sciences and Pathobiology, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Jianxin Liu
- Ministry of Education Key Laboratory of Molecular Animal Nutrition, College of Animal Science, Zhejiang University, Hangzhou, China
| | - Haifeng Wang
- Ministry of Education Key Laboratory of Molecular Animal Nutrition, College of Animal Science, Zhejiang University, Hangzhou, China
- *Correspondence: Haifeng Wang
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Evaluation of non-traditional visualization methods to detect surface attachment of biofilms. Colloids Surf B Biointerfaces 2020; 196:111320. [PMID: 32956995 DOI: 10.1016/j.colsurfb.2020.111320] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 08/08/2020] [Accepted: 08/10/2020] [Indexed: 11/24/2022]
Abstract
In food safety and food quality, biofilm research is of great importance for mitigating food-borne pathogens in food processing environments. To supplement the traditional staining techniques for biofilm characterization, we introduce several non-traditional imaging methods for detecting biofilm attachment to the solid-liquid and air-liquid interfaces. For strains of Pseudomonas aeruginosa (the positive control), Acinetobacter baumanii, Listeria monocytogenes and Salmonella enterica, the traditional crystal violet assay showed evidence of biofilm attachment to the well plate base as well as inferred the presence of an air-liquid biofilm attached on the upper well walls where the meniscus was present. However, air-liquid biofilms and solid-surface-attached biofilms were not detected for all of these strains using the non-traditional imaging methods. For L. monocytogenes, we were unable to detect biofilms at a particle-laden, air-liquid interface as evidenced through microscopy, which contradicts the meniscus staining test and suggests that the coffee-ring effect may lead to false positives when using meniscus staining. Furthermore, when L. monocytogenes was cultivated in a pendant droplet in air, only microbial sediment at the droplet apex was observed without any apparent bacterial colonization of the droplet surface. All other strains showed clear evidence of air-liquid biofilms at the air-liquid interface of a pendant droplet. To non-invasively detect if and when air-liquid pellicles form in a well plate, we also present a novel in situ reflection assay that demonstrates the capacity to do this quantitatively.
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Barache N, Belguesmia Y, Ladjouzi R, Bendali F, Drider D. Clusters of Lactobacillus Strains from Vegetal Origins Are Associated with Beneficial Functions: Experimental Data and Statistical Interpretations. Foods 2020; 9:E985. [PMID: 32722025 PMCID: PMC7466302 DOI: 10.3390/foods9080985] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 07/17/2020] [Accepted: 07/21/2020] [Indexed: 02/07/2023] Open
Abstract
Nine strains of Lactiplantibacillus plantarum and one strain of Lacticaseibacillus paracasei that were recently isolated from prickly pears, fresh figs and blackberries, which are traditionally and largely consumed fruits in Kabylia (north of Algeria), were studied here for their antagonism and antioxidant properties as well as for production of exopolysaccharides. With respect to their inhibitory properties, these strains were tested against three food representative pathogens including Escherichia coli ATCC 8739, Staphylococcus aureus 2S6 and Listeria monocytogenes 162. The antagonism of these pathogens was attributable to lactic acid production, present in the cell free supernatant, at concentrations ranging from 9 to 16.74 g/L. The anti-adhesive properties observed on polystyrene or eukaryotic Caco-2 cells were exerted in a strain dependent-manner. Indeed, the scores obtained ranged from 27% to 75% for S. aureus 2S6, 54% to 95% for L. monocytogenes 162, and 50% to 97% for E. coli ATCC 8739. The co-aggregation of these Lactobacillus strains with the aforementioned target bacteria appeared to be exerted in a strain-dependent manner, with noticeably the upmost rate for Lb. paracasei FB1 on S. aureus 2S6. Interestingly, these novel Lactobacillus strains were able to produce a large amount (315.55 to 483.22 mg/L) of exopolysaccharides, and showed a significant scavenging activity on the 2,2-di-phényl-2-picrylhydrazyle (DPPH) synthetic free radical with rates of 51% to 56%. Of note, the highest antioxidant activity was observed for Lb. paracasei FB1 using the culture supernatants, intact cells or the intracellular extract. The statistical analysis of these data using the principal component analysis (ACP) enabled us to establish three distinct clusters with potential applications as bioprotective and/or probiotic agents, following further evaluation.
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Affiliation(s)
- Nacim Barache
- Laboratoire de Microbiologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia 06000, Algeria;
- BIOECOAGRO Unit of Research N° 1158, Univ. Lille, INRAE, Univ. Liège, UPJV, YNCREA, Univ. Artois, Univ. Littoral Côte d’Opale, ICV-Institut Charles Viollette, F-59000 Lille, France; (Y.B.); (R.L.)
| | - Yanath Belguesmia
- BIOECOAGRO Unit of Research N° 1158, Univ. Lille, INRAE, Univ. Liège, UPJV, YNCREA, Univ. Artois, Univ. Littoral Côte d’Opale, ICV-Institut Charles Viollette, F-59000 Lille, France; (Y.B.); (R.L.)
| | - Rabia Ladjouzi
- BIOECOAGRO Unit of Research N° 1158, Univ. Lille, INRAE, Univ. Liège, UPJV, YNCREA, Univ. Artois, Univ. Littoral Côte d’Opale, ICV-Institut Charles Viollette, F-59000 Lille, France; (Y.B.); (R.L.)
| | - Farida Bendali
- Laboratoire de Microbiologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia 06000, Algeria;
| | - Djamel Drider
- BIOECOAGRO Unit of Research N° 1158, Univ. Lille, INRAE, Univ. Liège, UPJV, YNCREA, Univ. Artois, Univ. Littoral Côte d’Opale, ICV-Institut Charles Viollette, F-59000 Lille, France; (Y.B.); (R.L.)
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Comparative study of microbiological transfer from four materials used in direct contact with apples. Int J Food Microbiol 2020; 333:108780. [PMID: 32682208 DOI: 10.1016/j.ijfoodmicro.2020.108780] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 06/15/2020] [Accepted: 07/01/2020] [Indexed: 11/22/2022]
Abstract
Several materials such as plastic, wood, cardboard or stainless steel are used as working surfaces or packaging in direct contact with foodstuffs. In food industries, the hygienic surface status is one of the criteria to product conform packaging as described in the European regulation ECR 1935/2004. Today in European Union, it exists one harmonized regulation specific for Food Contact material made of plastic called EU N°10/2011 (Anonymous 2011a). This regulation specifies that materials intended for safe foodstuff contact must not modify food characteristics in terms of chemical, microbiological and sensorial properties. This study aims to compare the survival and transfer of Penicillium expansum conidia and Escherichia coli cells from several materials to apples. Poplar, cardboards, newly manufactured plastic and reusable plastic specimens were artificially inoculated with both microorganisms, subsequently put in contact with apples and stored under realistic storage conditions. After incubation for up to 1 week, apples and specimens were analysed to assess the survival of the microorganisms and their transfer from materials to apples. While P. expansum survived and did not grow on any of the materials, E. coli mortality was observed after 1 h on wood and cardboard and after 1 week on both plastics. The proportion of microorganisms transferred was different according to the considered material. This transfer was lower than 1% for wood.
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Rhodomyrtus tomentosa Fruit Extract and Skin Microbiota: A Focus on C. acnes Phylotypes in Acne Subjects. COSMETICS 2020. [DOI: 10.3390/cosmetics7030053] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Knowing that Rhodomyrtus tomentosa is known to have antibacterial effects, this study investigated the skin microbiota with a focus on Cutibacterium acnes (C. acnes) phylotypes in subjects with acne, and determined microbiota changes after 28 days of treatment with berries Rhodomyrtus tomentosa as an active ingredient (RT). Skin swabs from seventeen acne subjects were collected and the skin microbiome was analyzed using 16S rRNA gene sequencing. A culture-independent next-generation sequencing (NGS)-based SLST (single-locus sequence typing) approach was aimed at evaluating RT extract effects on C. acnes phylotype repartition. Clinical evaluations (lesion counts) were performed at baseline (D0) and after 28 days (D28) of twice-daily application of the RT active ingredient. We determined: (1) the skin microbiota at D0 was dominated by Actinobacteria followed by Firmicutes and Proteobacteria; (2) at the genus level, Cutibacterium was the most abundant genus followed by Staphylococcus and Corynebacterium; (3) C. acnes was the major species in terms of mean abundance, followed by Staphylococcus epidermidis (S. epidermidis) and Staphylococcus hominis (S. hominis); and (4) phylotype IA1 was most represented, with a predominance of SLST type A1, followed by phylotypes II, IB, IA2, IC, and III. After 28 days of RT extract treatment, phylotype repartition were modified with a decrease in abundance (approximately 4%) of phylotype IA1 and an increase in phylotype II and III. Cutibacterium granulosum (C. granulosum) abundance also decreased. Reduction of retentional and inflammatory lesions was also noted only after RT treatment; thus, RT extract acts as a microbiota-regulating agent.
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LEPAUS BM, ROCHA JS, SÃO JOSÉ JFBD. Organic acids and hydrogen peroxide can replace chlorinated compounds as sanitizers on strawberries, cucumbers and rocket leaves. FOOD SCIENCE AND TECHNOLOGY 2020. [DOI: 10.1590/fst.09519] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Hidber T, Pauli U, Steiner A, Kuhnert P. In vitro and ex vivo testing of alternative disinfectants to currently used more harmful substances in footbaths against Dichelobacter nodosus. PLoS One 2020; 15:e0229066. [PMID: 32053674 PMCID: PMC7018501 DOI: 10.1371/journal.pone.0229066] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 01/28/2020] [Indexed: 01/23/2023] Open
Abstract
A footbath-based control program for ovine footrot, a contagious disease caused by Dichelobacter nodosus, will be implemented in Switzerland. The currently used footbath disinfectants formaldehyde, zinc sulfate and copper sulfate are carcinogenic or environmental pollutants. Hence, the aim of this study was to identify alternative disinfectants, which are highly effective, non-carcinogenic, environmentally acceptable, inexpensive, available as concentrate and suitable for licensing. The antimicrobial effect of a series of potential chemicals such as lactic acid, propionic acid, hydrogen peroxide, sodium hypochlorite, octenidine dihydrochloride, chlorocresol, Ampholyt 20 and the registered biocide DESINTEC® Hoof Care Special D (Desintec) were investigated by culture based in vitro testing. The microcidal effect of various Desintec concentrations were then compared against routinely used 4% formaldehyde and 10% zinc sulfate in ex vivo assays on sheep feet from slaughter. For this purpose a newly established PMA (propidium monoazid) real-time PCR using the improved dye PMAxx™ was applied that allows discrimination of viable and dead D. nodosus. In the ex vivo experiments, 4% formaldehyde was significantly more effective than 10% zinc sulfate and was chosen as positive control for assessing the new disinfectant. The disinfectant effect of Desintec in a minimal concentration of 6% was equally effective as 4% formaldehyde, meaning that it offers a comparable antimicrobial effect against virulent D. nodosus. In conclusion, Desintec is a promising disinfectant for replacing formaldehyde, copper sulfate and zinc sulfate in footbaths against footrot.
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Affiliation(s)
- Tobias Hidber
- Institute of Veterinary Bacteriology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
- Clinic for Ruminants, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Urs Pauli
- Institute of Virology and Immunology, Mittelhäusern, Köniz, Switzerland
| | - Adrian Steiner
- Clinic for Ruminants, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Peter Kuhnert
- Institute of Veterinary Bacteriology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
- * E-mail:
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Pelyuntha W, Chaiyasut C, Kantachote D, Sirilun S. Organic acids and 2,4-Di- tert-butylphenol: major compounds of Weissella confusa WM36 cell-free supernatant against growth, survival and virulence of Salmonella Typhi. PeerJ 2020; 8:e8410. [PMID: 31998561 PMCID: PMC6977521 DOI: 10.7717/peerj.8410] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 12/16/2019] [Indexed: 12/14/2022] Open
Abstract
Background Salmonella Typhi (S. Typhi), the causative agent of typhoid fever, causes serious systemic disease in humans. Antibiotic treatment is required for the S. Typhi infection, while the inappropriate use of antibiotics causes increased drug-resistant S. Typhi. Hence, alternative therapies through non-antibiotic approaches are urgently needed. The use of beneficial lactic acid bacterium and/or its metabolites to control typhoid fever represent a promising approach, as it may exert protective actions through various mechanisms. Method In this study, the cell-free culture supernatant (CFCS) of Weissella confusa WM36 was evaluated via the antibacterial activity, and its metabolites were identified. In addition, the effects of CFCS on Salmonella virulence behaviors were also investigated. Result Based on strong inhibition the growth of S. Typhi DMST 22842, organic acids (lactic acid and acetic acid) and 2,4-Di-tert-butylphenol (2,4 DTBP), were the main antibacterial metabolites presented in CFCS of strain WM36. Minimum inhibitory concentration (MIC) at 40% WM36–CFCS dramatically reduced the S. Typhi population to more than 99.99% at 4 h and completely inhibited biofilm formation, while sub-MIC at 20% (v/v) and MIC could reduce 100% of motility. Additionally, sub-MIC at only 10% (v/v) WM36–CFCS did down-regulate the expression of virulence genes which are responsible for the type-III secretion system, effector proteins, and quorum sensing system in this pathogen. Conclusion W. confusa WM36 and its metabolites are shown to be a promising candidates, and an effective approach against typhoid Salmonella burden.
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Affiliation(s)
- Wattana Pelyuntha
- Innovation Center for Holistic Health, Nutraceuticals and Cosmeceuticals, Faculty of Pharmacy, Chiang Mai University, Chiang Mai, Thailand
| | - Chaiyavat Chaiyasut
- Innovation Center for Holistic Health, Nutraceuticals and Cosmeceuticals, Faculty of Pharmacy, Chiang Mai University, Chiang Mai, Thailand
| | - Duangporn Kantachote
- Department of Microbiology, Faculty of Science, Prince of Songkla University, Hat Yai, Thailand
| | - Sasithorn Sirilun
- Innovation Center for Holistic Health, Nutraceuticals and Cosmeceuticals, Faculty of Pharmacy, Chiang Mai University, Chiang Mai, Thailand
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Antimicrobial effect of benzoic and sorbic acid salts and nano-solubilisates against Staphylococcus aureus, Pseudomonas fluorescens and chicken microbiota biofilms. Food Control 2020. [DOI: 10.1016/j.foodcont.2019.106786] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Lamas A, Regal P, Vázquez B, Cepeda A, Franco CM. Short Chain Fatty Acids Commonly Produced by Gut Microbiota Influence Salmonella enterica Motility, Biofilm Formation, and Gene Expression. Antibiotics (Basel) 2019; 8:E265. [PMID: 31847278 PMCID: PMC6963744 DOI: 10.3390/antibiotics8040265] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 12/09/2019] [Accepted: 12/12/2019] [Indexed: 12/16/2022] Open
Abstract
Short chain fatty acids (SCFAs) are commonly produced by healthy gut microbiota and they have a protective role against enteric pathogens. SCFAs also have direct antimicrobial activity against bacterial pathogens by diffusion across the bacterial membrane and reduction of intracellular pH. Due to this antimicrobial activity, SCFAs have promising applications in human health and food safety. In this study, the minimum inhibitory concentrations (MICs) of four SCFAs (acetic acid, butyric acid, propionic acid, and valeric acid) in Salmonella strains isolated from poultry were determined. The effect of subinhibitory concentrations of SCFAs in Salmonella biofilm formation, motility, and gene expression was also evaluated. Butyric acid, propionic acid, and valeric acid showed a MIC of 3750 µg/mL in all strains tested, while the MIC of acetic acid was between 1875 and 3750 µg/mL. Subinhibitory concentrations of SCFAs significantly (p < 0.05) reduced the motility of all Salmonella strains, especially in the presence of acetic acid. Biofilm formation was also significantly (p < 0.05) lower in the presence of SCFAs in some of the Salmonella strains. Salmonella strain. Salmonella Typhimurium T7 showed significant (p < 0.05) upregulation of important virulence genes, such as invA and hilA, especially in the presence of butyric acid. Therefore, SCFAs are promising substances for the inhibition of the growth of foodborne pathogens. However, it is important to avoid the use of subinhibitory concentrations that could increase the virulence of foodborne pathogen Salmonella.
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Affiliation(s)
- Alexandre Lamas
- Laboratorio de Higiene Inspección y Control de Alimentos, Departamento de Química Analítica, Nutrición y Bromatología, Universidad de Santiago de Compostela, 27002 Lugo, Spain; (P.R.); (B.V.); (A.C.); (C.M.F.)
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Hu WS, Nam DM, Choi JY, Kim JS, Koo OK. Anti-attachment, anti-biofilm, and antioxidant properties of Brassicaceae extracts on Escherichia coli O157:H7. Food Sci Biotechnol 2019; 28:1881-1890. [PMID: 31807362 DOI: 10.1007/s10068-019-00621-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 04/09/2019] [Accepted: 04/25/2019] [Indexed: 12/13/2022] Open
Abstract
Bacteria can survive and persist in food processing environments by attachment and biofilm formation and transfer to food products, causing serious foodborne illness. In this study, we investigated natural substances that belong to the family Brassicaceae to determine whether they have potential anti-attachment activities against Escherichia coli O157:H7. The inhibition of biofilm formation was evaluated by crystal violet and resazurin assays at different stages of biofilm formation (initial attachment, biofilm formation, and after biofilm development) of E. coli O157:H7. The sessile cells were reduced to a range of 13.8-31.3% by young radish, radish, radish sprout, red cabbage, and kale extracts, and the viability was reduced to between 5.83 and 51.5%. The radical scavenging activities and the presence of polyphenolic compounds were compared. The presence of phenolic compounds such as gallic acid, caffeic acid, and phenylethyl ITC in the Brassicaceae family verified the potential use as a natural anti-biofilm substituent against E. coli O157:H7.
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Affiliation(s)
- Wen Si Hu
- 1Department of Food and Nutrition, Gyeongsang National University, 501 Jinjudae-ro, Jinju-si, Gyeongsangnam-do 52828 Republic of Korea
| | - Da Min Nam
- 1Department of Food and Nutrition, Gyeongsang National University, 501 Jinjudae-ro, Jinju-si, Gyeongsangnam-do 52828 Republic of Korea
| | - Jin Young Choi
- 2Department of Chemistry, Gyeongsang National University, Jinju, Republic of Korea
| | - Joo Sung Kim
- 3Research Group of Consumer Safety, Korea Food Research Institute, Wanju, Jeollabuk-do Republic of Korea
| | - Ok Kyung Koo
- 1Department of Food and Nutrition, Gyeongsang National University, 501 Jinjudae-ro, Jinju-si, Gyeongsangnam-do 52828 Republic of Korea.,4Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, Republic of Korea
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Quorum sensing in food spoilage and natural-based strategies for its inhibition. Food Res Int 2019; 127:108754. [PMID: 31882100 DOI: 10.1016/j.foodres.2019.108754] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/27/2019] [Accepted: 10/13/2019] [Indexed: 10/25/2022]
Abstract
Food can harbor a variety of microorganisms including spoilage and pathogenic bacteria. Many bacterial processes, including production of degrading enzymes, virulence factors, and biofilm formation are known to depend on cell density through a process called quorum sensing (QS), in which cells communicate by synthesizing, detecting and reacting to small diffusible signaling molecules - autoinducers (AI). The disruption of QS could decisively contribute to control the expression of many harmful bacterial phenotypes. Several quorum sensing inhibitors (QSI) have been extensively studied, being many of them of natural origin. This review provides an analysis on the role of QS in food spoilage and biofilm formation within the food industry. QSI from natural sources are also reviewed towards their putative future applications to prolong shelf life of food products and decrease foodborne pathogenicity.
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Bardhan T, Chakraborty M, Bhattacharjee B. Bactericidal Activity of Lactic Acid against Clinical, Carbapenem-Hydrolyzing, Multi-Drug-Resistant Klebsiella pneumoniae Planktonic and Biofilm-Forming Cells. Antibiotics (Basel) 2019; 8:antibiotics8040181. [PMID: 31600988 PMCID: PMC6963607 DOI: 10.3390/antibiotics8040181] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 10/01/2019] [Accepted: 10/08/2019] [Indexed: 12/15/2022] Open
Abstract
Carbapenem resistant Klebsiella pneumoniae has been highlighted to be a critical pathogen by the World Health Organization. The objectives of this study were to assess the efficacy of lactic acid (LA) against planktonic cells and biofilms formed by carbapenem-hydrolyzing K. pneumoniae isolates obtained from the nares of preterm neonates. Time-kill assays with graded percentages of (v/v) LA in water were initially carried out against planktonic cells of a meropenem (MRP)-resistant K. pneumoniae isolate, JNM11.C4. The efficacy parameters such as optimal incubation time and minimum inhibitory concentration were determined by comparing colony-forming unit counts (log(10) CFU). Scanning electron microscopy was used to visualize cell damage. Likewise, JNM11.C4 biofilms were treated with graded series of (v/v) LA. Six carbapenem-hydrolyzing isolates were next used to validate the results. A reduction of 3.6 ± 0.6 log(10) CFU/mL in JNM11.C4 planktonic cells and >3 ± 0.03log(10) CFU/mL in biofilm-forming cells were observed using 0.225% and 2% LA, respectively, after three hours. Similar decreases in viable cell-counts were observed both in the case of planktonic (˃3.6 ± 0.3log(10) CFU/mL) and biofilm-forming cells (3.8 ± 0.3log(10) CFU/mL) across all the six clinical isolates. These results indicate that LA is an effective antimicrobial against planktonic carbapenem-hydrolyzing K. pneumoniae cells and biofilms.
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Affiliation(s)
- Taniya Bardhan
- National Institute of Biomedical Genomics, Kalyani, West Bengal 741251, India
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Li Z, Guo R, Wang F, Geng S, Kang X, Meng C, Gu D, Jiao X, Pan Z. Inactivation of Salmonella Enteritidis on eggshells by lactic acid spray. Food Control 2019. [DOI: 10.1016/j.foodcont.2019.04.046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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50
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Pelyuntha W, Chaiyasut C, Kantachote D, Sirilun S. Cell-free supernatants from cultures of lactic acid bacteria isolated from fermented grape as biocontrol against Salmonella Typhi and Salmonella Typhimurium virulence via autoinducer-2 and biofilm interference. PeerJ 2019; 7:e7555. [PMID: 31523511 PMCID: PMC6715067 DOI: 10.7717/peerj.7555] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 07/25/2019] [Indexed: 12/16/2022] Open
Abstract
Background Salmonella Typhi and Salmonella Typhimurium are the causative pathogens of salmonellosis, and they are mostly found in animal source foods (ASF). The inappropriate use of antibiotics enhances the possibility for the emergence of antibiotic resistance in pathogens and antibiotic residue in ASF. One promising alternative to antibiotics in animal farming is the use of lactic acid bacteria (LAB). Methods The present study was carried out the cells and/or the cell-free culture supernatants (CFCS) from beneficial LAB against S. Typhi and S. Typhimurium. The antibacterial mechanisms of LAB-CFCS as biocontrol agents against both Salmonella serovars were investigated through the analysis of anti-salmonella growth activity, biofilm inhibition and quorum quenching activity. Results Among 146 LAB strains isolated from 110 fermented food samples, the 2 strong inhibitory effect strains (WM33 and WM36) from fermented grapes against both Salmonella serovars were selected. Out of the selected strains, WM36 was the most effective inhibitor, which indicated S. Typhi by showing 95.68% biofilm inhibition at 20% biofilm inhibition concentration (BIC) and reduced 99.84% of AI-2 signaling interference. The WM33 was the best to control S. Typhimurium by producing 66.46% biofilm inhibition at only 15% BIC and 99.99% AI-2 signaling a reduction. The 16S rDNA was amplified by a polymerase chain reaction (PCR). The selected isolates were identified as Weissella viridescens WM33 and Weissella confusa WM36 based on nucleotide homology and phylogenetic analysis. Conclusion The metabolic extracts from Weissella spp. inhibit Salmonella serovars with the potential to be used as biocontrol agents to improve microbiological safety in the production of ASF.
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Affiliation(s)
- Wattana Pelyuntha
- Innovation Center for Holistic Health, Nutraceuticals and Cosmeceuticals, Faculty of Pharmacy, Chiang Mai University, Chiang Mai, Thailand
| | - Chaiyavat Chaiyasut
- Innovation Center for Holistic Health, Nutraceuticals and Cosmeceuticals, Faculty of Pharmacy, Chiang Mai University, Chiang Mai, Thailand
| | - Duangporn Kantachote
- Department of Microbiology, Faculty of Science, Prince of Songkla University, Hat Yai, Thailand
| | - Sasithorn Sirilun
- Innovation Center for Holistic Health, Nutraceuticals and Cosmeceuticals, Faculty of Pharmacy, Chiang Mai University, Chiang Mai, Thailand
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