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Zanditenas E, Ankri S. Unraveling the interplay between unicellular parasites and bacterial biofilms: Implications for disease persistence and antibiotic resistance. Virulence 2024; 15:2289775. [PMID: 38058008 PMCID: PMC10761080 DOI: 10.1080/21505594.2023.2289775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 11/27/2023] [Indexed: 12/08/2023] Open
Abstract
Bacterial biofilms have attracted significant attention due to their involvement in persistent infections, food and water contamination, and infrastructure corrosion. This review delves into the intricate interactions between bacterial biofilms and unicellular parasites, shedding light on their impact on biofilm formation, structure, and function. Unicellular parasites, including protozoa, influence bacterial biofilms through grazing activities, leading to adaptive changes in bacterial communities. Moreover, parasites like Leishmania and Giardia can shape biofilm composition in a grazing independent manner, potentially influencing disease outcomes. Biofilms, acting as reservoirs, enable the survival of protozoan parasites against environmental stressors and antimicrobial agents. Furthermore, these biofilms may influence parasite virulence and stress responses, posing challenges in disease treatment. Interactions between unicellular parasites and fungal-containing biofilms is also discussed, hinting at complex microbial relationships in various ecosystems. Understanding these interactions offers insights into disease mechanisms and antibiotic resistance dissemination, paving the way for innovative therapeutic strategies and ecosystem-level implications.
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Affiliation(s)
- Eva Zanditenas
- Department of Molecular Microbiology, Ruth and Bruce Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Serge Ankri
- Department of Molecular Microbiology, Ruth and Bruce Rappaport Faculty of Medicine, Technion, Haifa, Israel
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2
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Amoah K, Cai J, Huang Y, Wang B, Shija VM, Wang Z, Jin X, Cai S, Lu Y, Jian J. Identification and Characterization of four Bacillus species from the intestine of hybrid grouper (Epinephelus fuscoguttatus♀ × E. lanceolatus♂), their antagonistic role on common pathogenic bacteria, and effects on intestinal health. FISH & SHELLFISH IMMUNOLOGY 2024; 152:109795. [PMID: 39069109 DOI: 10.1016/j.fsi.2024.109795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 07/11/2024] [Accepted: 07/25/2024] [Indexed: 07/30/2024]
Abstract
As an alternative to the criticized antibiotics, probiotics have been adopted for their eco-friendly nature and ability to enhance host growth and immunity. Nevertheless, reports suggest ineffectiveness in commercially available probiotics since most are from non-fish sources; thus, this study was envisaged to isolate and characterize new Bacillus spp. from the gut of hybrid grouper (Epinephelus fuscoguttatus♀×Epinephelus lanceolatus♂) as potential probiotics. The isolation and characterization were performed based on their morphological and biochemical properties and 16S rRNA sequencing homology analysis, and a subsequent 4-week in vivo biosafety feeding trial was conducted to ascertain the effects on isolates' non-pathogenicity, growth, and intestinal mucosal microvilli via scanning electron microscopy (SEM) analysis. Four Bacillus spp. strains, namely, B. velezensis strain PGSAK01 (accession number OQ726606), B. stercoris strain PGSAK05 (accession number OQ726607), B. velezensis strain PGSAK17 (accession number OQ726601), and B. subtilis strain PGSAK19 (accession number OQ726605), were identified and characterized in the current study. The strains showed promising probiotic properties such as showing higher adhesion capability, higher thermotolerance, displaying higher survivability to 0.5% bile, lower pH tolerance, γ-haemolytic activity, and multispecies characteristics. Among the 24 antibiotics tested, isolates were susceptible to 21, whereas the PGSAK01 strain showed resistance to furazolidone antibiotics. None of the isolates showed possession of i) virulence factor genes encoding enterotoxigenic (hblA, hblC, hblD, nheA, nheB, and entFM) and emetic (cereulide synthetase gene, ces) genes, and ii) streptomycin resistance gene (vat c), ampicillin-resistant genes (mecA and bla), and vancomycin-resistant gene (van B). Nevertheless, the PGSAK01 and PGSAK17 strains showed possession of tek K, cat, and ant(4')-Ia (adenylyltransferase) (except the PGSAK01) resistant genes. All isolates displayed better antimicrobial effects against pathogenic bacteria Streptococcus agalactiae, S. iniae, Vibrio harveyi, and V. alginolyticus. The vivo biosafety trial involved hybrid grouper fish being grouped into five (average weight 32±0.94 g), namely, the group fed the basal diet void of isolate's supplementation (control), and the remaining four groups fed the basal diet with 1×108 CFU/g diet of individual strain PGSAK01, PGSAK05, PGSAK17, and PGSAK19 supplementation. At the end of the study, a significantly higher WGR, K (except the PGSAK01 group), VSI; lysozyme (except PGSAK01 group), superoxide dismutase, total antioxidant activity, alkaline phosphatase enzyme activities; highly dense intestinal mucosal villi (based on the scanning electron microscopy analysis); and significantly lower malondialdehyde levels were witnessed in the isolated treated groups compared to the control, supporting the results obtained in the auto-aggregation and cell-surface hydrophobicity test. This work's results have provided thought-provoking targets; thus, studies involving extensive genome sequencing and functional annotation analysis will be explored to offer unfathomable insights into their mechanisms of action and potential health benefits, further establishing the four Bacillus strains PGSAK01, PGSAK05, PGSAK17, and PGSAK19 potential role in probiotic fields and functional foods.
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Affiliation(s)
- Kwaku Amoah
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524000, China; Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy culture, Guangdong Ocean University, Zhanjiang 524000, China; Guangdong Key Laboratory of Control for Disease of Aquatic Animals of Guangdong Higher Education Institutes, Zhanjiang, 524088, China; Guangdong Provincial Engineering Research Centre for Aquatic Animal Health Assessment, Shenzhen 327005, China.
| | - Jia Cai
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524000, China; Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy culture, Guangdong Ocean University, Zhanjiang 524000, China; Guangdong Key Laboratory of Control for Disease of Aquatic Animals of Guangdong Higher Education Institutes, Zhanjiang, 524088, China; Guangdong Provincial Engineering Research Centre for Aquatic Animal Health Assessment, Shenzhen 327005, China
| | - Yu Huang
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524000, China; Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy culture, Guangdong Ocean University, Zhanjiang 524000, China; Guangdong Key Laboratory of Control for Disease of Aquatic Animals of Guangdong Higher Education Institutes, Zhanjiang, 524088, China; Guangdong Provincial Engineering Research Centre for Aquatic Animal Health Assessment, Shenzhen 327005, China
| | - Bei Wang
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524000, China; Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy culture, Guangdong Ocean University, Zhanjiang 524000, China; Guangdong Key Laboratory of Control for Disease of Aquatic Animals of Guangdong Higher Education Institutes, Zhanjiang, 524088, China; Guangdong Provincial Engineering Research Centre for Aquatic Animal Health Assessment, Shenzhen 327005, China
| | - Vicent Michael Shija
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524000, China; Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy culture, Guangdong Ocean University, Zhanjiang 524000, China; Guangdong Key Laboratory of Control for Disease of Aquatic Animals of Guangdong Higher Education Institutes, Zhanjiang, 524088, China
| | - Zhiwen Wang
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524000, China; Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy culture, Guangdong Ocean University, Zhanjiang 524000, China; Guangdong Key Laboratory of Control for Disease of Aquatic Animals of Guangdong Higher Education Institutes, Zhanjiang, 524088, China; Guangdong Provincial Engineering Research Centre for Aquatic Animal Health Assessment, Shenzhen 327005, China
| | - Xiao Jin
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524000, China; Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy culture, Guangdong Ocean University, Zhanjiang 524000, China; Guangdong Key Laboratory of Control for Disease of Aquatic Animals of Guangdong Higher Education Institutes, Zhanjiang, 524088, China; Guangdong Provincial Engineering Research Centre for Aquatic Animal Health Assessment, Shenzhen 327005, China
| | - Shuanghu Cai
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524000, China; Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy culture, Guangdong Ocean University, Zhanjiang 524000, China; Guangdong Key Laboratory of Control for Disease of Aquatic Animals of Guangdong Higher Education Institutes, Zhanjiang, 524088, China; Guangdong Provincial Engineering Research Centre for Aquatic Animal Health Assessment, Shenzhen 327005, China
| | - Yishan Lu
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524000, China; Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy culture, Guangdong Ocean University, Zhanjiang 524000, China; Guangdong Key Laboratory of Control for Disease of Aquatic Animals of Guangdong Higher Education Institutes, Zhanjiang, 524088, China; Guangdong Provincial Engineering Research Centre for Aquatic Animal Health Assessment, Shenzhen 327005, China
| | - Jichang Jian
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524000, China; Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy culture, Guangdong Ocean University, Zhanjiang 524000, China; Guangdong Key Laboratory of Control for Disease of Aquatic Animals of Guangdong Higher Education Institutes, Zhanjiang, 524088, China; Guangdong Provincial Engineering Research Centre for Aquatic Animal Health Assessment, Shenzhen 327005, China.
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Cullen JT, Lawlor PG, Viard F, Lourenco A, Gómez-Mascaraque LG, O'Doherty JV, Cormican P, Gardiner GE. Optimising the hygiene of a liquid feeding system to improve the quality of liquid feed for pigs. Sci Rep 2024; 14:16516. [PMID: 39019905 PMCID: PMC11255203 DOI: 10.1038/s41598-024-65097-y] [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: 02/15/2024] [Accepted: 06/17/2024] [Indexed: 07/19/2024] Open
Abstract
Poor feeding system hygiene may contribute to uncontrolled spontaneous fermentation in liquid pig feed and its associated undesirable effects. This study aimed to determine the effects of an intensive sanitisation programme in a grow-finisher liquid feeding system by monitoring microbiological and physico-chemical parameters of liquid feed and microbial colonisation of the feeding system surfaces. The sanitisation programme involved a combination of physical and chemical cleaning between batches of grow-finisher pigs, combined with nightly rinsing of the system with an organic acid blend. Improved hygiene of the internal surfaces of the mixing tank and feed pipeline, particularly until week 5 post-cleaning, was evidenced by reduced counts of lactic acid bacteria, total aerobes, Enterobacteriaceae, yeasts and moulds and decreased adenosine triphosphate concentrations. Enterobacteriaceae and moulds remained undetectable on pipeline surfaces for 10 weeks. Scanning electron microscopy of the feed pipelines confirmed these findings. Conversely, the impact on liquid feed microbiology was minimal and short-lived. However, acetic acid, ethanol and biogenic amine concentrations decreased in the feed post-cleaning and no gross energy losses were observed. Therefore, by controlling surface microbial communities on liquid feeding systems via implementation of the sanitisation programme developed in the current study, on-farm liquid feed quality should be improved.
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Affiliation(s)
- J T Cullen
- Eco-Innovation Research Centre, Department of Science, South East Technological University, Cork Road Campus, Waterford, X91 K0EK, Ireland
- Teagasc Pig Development Department, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, P61 C996, Ireland
| | - P G Lawlor
- Teagasc Pig Development Department, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, P61 C996, Ireland
| | - F Viard
- Teagasc Pig Development Department, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, P61 C996, Ireland
- School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, Dublin, D04 V1W8, Ireland
| | - A Lourenco
- Food Bioscience Department, Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, P61 C996, Ireland
| | - L G Gómez-Mascaraque
- Food Chemistry and Technology Department, Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, P61 C996, Ireland
| | - J V O'Doherty
- School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, Dublin, D04 V1W8, Ireland
| | - P Cormican
- Animal and Bioscience Research Department, Animal and Grassland Research and Innovation Centre, Teagasc, Grange, Dunsany, Co. Meath, C15 PW93, Ireland
| | - G E Gardiner
- Eco-Innovation Research Centre, Department of Science, South East Technological University, Cork Road Campus, Waterford, X91 K0EK, Ireland.
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Santoro O, Izzo L. Antimicrobial Polymer Surfaces Containing Quaternary Ammonium Centers (QACs): Synthesis and Mechanism of Action. Int J Mol Sci 2024; 25:7587. [PMID: 39062830 PMCID: PMC11277267 DOI: 10.3390/ijms25147587] [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: 06/02/2024] [Revised: 07/05/2024] [Accepted: 07/08/2024] [Indexed: 07/28/2024] Open
Abstract
Synthetic polymer surfaces provide an excellent opportunity for developing materials with inherent antimicrobial and/or biocidal activity, therefore representing an answer to the increasing demand for antimicrobial active medical devices. So far, biologists and material scientists have identified a few features of bacterial cells that can be strategically exploited to make polymers inherently antimicrobial. One of these is represented by the introduction of cationic charges that act by killing or deactivating bacteria by interaction with the negatively charged parts of their cell envelope (lipopolysaccharides, peptidoglycan, and membrane lipids). Among the possible cationic functionalities, the antimicrobial activity of polymers with quaternary ammonium centers (QACs) has been widely used for both soluble macromolecules and non-soluble materials. Unfortunately, most information is still unknown on the biological mechanism of action of QACs, a fundamental requirement for designing polymers with higher antimicrobial efficiency and possibly very low toxicity. This mini-review focuses on surfaces based on synthetic polymers with inherently antimicrobial activity due to QACs. It will discuss their synthesis, their antimicrobial activity, and studies carried out so far on their mechanism of action.
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Affiliation(s)
| | - Lorella Izzo
- Department of Biotechnology and Life Sciences, University of Insubria, 21100 Varese, Italy;
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5
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Liu X, Xiong Y, Peng R, Zhang Y, Cai S, Deng Q, Yu Z, Wen Z, Chen Z, Hou T. Antibacterial activity and mechanisms of D-3263 against Staphylococcus aureus. BMC Microbiol 2024; 24:224. [PMID: 38926818 PMCID: PMC11201875 DOI: 10.1186/s12866-024-03377-3] [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: 02/19/2024] [Accepted: 06/17/2024] [Indexed: 06/28/2024] Open
Abstract
Multi-drug-resistant Staphylococcus aureus infections necessitate novel antibiotic development. D-3263, a transient receptor potential melastatin member 8 (TRPM8) agonist, has potential antineoplastic properties. Here, we reported the antibacterial and antibiofilm activities of D-3263. Minimum inhibitory concentrations (MICs) against S. aureus, Enterococcus faecalis and E. faecium were ≤ 50 µM. D-3263 exhibited bactericidal effects against clinical methicillin-resistant S. aureus (MRSA) and E. faecalis strains at 4× MIC. Subinhibitory D-3263 concentrations effectively inhibited S. aureus and E. faecalis biofilms, with higher concentrations also clearing mature biofilms. Proteomic analysis revealed differential expression of 29 proteins under 1/2 × MIC D-3263, influencing amino acid biosynthesis and carbohydrate metabolism. Additionally, D-3263 enhanced membrane permeability of S. aureus and E. faecalis. Bacterial membrane phospholipids phosphatidylethanolamine (PE), phosphatidylglycerol (PG), and cardiolipin (CL) dose-dependently increased D-3263 MICs. Overall, our data suggested that D-3263 exhibited potent antibacterial and antibiofilm activities against S. aureus by targeting the cell membrane.
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Affiliation(s)
- Xiaoju Liu
- Department of Infectious Diseases, Shenzhen Key Laboratory for Endogenous Infection, Huazhong University of Science and Technology Union Shenzhen Hospital, No 89, Taoyuan Road, Nanshan District, Shenzhen, 518052, China
| | - Yanpeng Xiong
- Department of Infectious Diseases, Shenzhen Key Laboratory for Endogenous Infection, Huazhong University of Science and Technology Union Shenzhen Hospital, No 89, Taoyuan Road, Nanshan District, Shenzhen, 518052, China
| | - Renhai Peng
- Department of Infectious Diseases, Shenzhen Key Laboratory for Endogenous Infection, Huazhong University of Science and Technology Union Shenzhen Hospital, No 89, Taoyuan Road, Nanshan District, Shenzhen, 518052, China
| | - Yufang Zhang
- Department of Biology, Washington University in St. Louis, 1 Brookings Drive, St Louis, MO, 63130, USA
| | - Shuyu Cai
- Department of Infectious Diseases, Shenzhen Key Laboratory for Endogenous Infection, Huazhong University of Science and Technology Union Shenzhen Hospital, No 89, Taoyuan Road, Nanshan District, Shenzhen, 518052, China
- Department of Infectious Diseases and Shenzhen key Laboratory of Endogenous infection, Shenzhen Nanshan People's Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, No 89, Taoyuan Road, Nanshan District, Shenzhen, 518052, China
| | - Qiwen Deng
- Department of Infectious Diseases, Shenzhen Key Laboratory for Endogenous Infection, Huazhong University of Science and Technology Union Shenzhen Hospital, No 89, Taoyuan Road, Nanshan District, Shenzhen, 518052, China
- Department of Infectious Diseases and Shenzhen key Laboratory of Endogenous infection, Shenzhen Nanshan People's Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, No 89, Taoyuan Road, Nanshan District, Shenzhen, 518052, China
| | - Zhijian Yu
- Department of Infectious Diseases, Shenzhen Key Laboratory for Endogenous Infection, Huazhong University of Science and Technology Union Shenzhen Hospital, No 89, Taoyuan Road, Nanshan District, Shenzhen, 518052, China
- Department of Infectious Diseases and Shenzhen key Laboratory of Endogenous infection, Shenzhen Nanshan People's Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, No 89, Taoyuan Road, Nanshan District, Shenzhen, 518052, China
| | - Zewen Wen
- Department of Infectious Diseases, Shenzhen Key Laboratory for Endogenous Infection, Huazhong University of Science and Technology Union Shenzhen Hospital, No 89, Taoyuan Road, Nanshan District, Shenzhen, 518052, China
- Department of Infectious Diseases and Shenzhen key Laboratory of Endogenous infection, Shenzhen Nanshan People's Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, No 89, Taoyuan Road, Nanshan District, Shenzhen, 518052, China
| | - Zhong Chen
- Department of Infectious Diseases, Shenzhen Key Laboratory for Endogenous Infection, Huazhong University of Science and Technology Union Shenzhen Hospital, No 89, Taoyuan Road, Nanshan District, Shenzhen, 518052, China.
- Department of Infectious Diseases and Shenzhen key Laboratory of Endogenous infection, Shenzhen Nanshan People's Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, No 89, Taoyuan Road, Nanshan District, Shenzhen, 518052, China.
| | - Tieying Hou
- Department of Infectious Diseases, Shenzhen Key Laboratory for Endogenous Infection, Huazhong University of Science and Technology Union Shenzhen Hospital, No 89, Taoyuan Road, Nanshan District, Shenzhen, 518052, China.
- Department of Infectious Diseases and Shenzhen key Laboratory of Endogenous infection, Shenzhen Nanshan People's Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, No 89, Taoyuan Road, Nanshan District, Shenzhen, 518052, China.
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Hassan N, Krieg T, Kopp A, Bach AD, Kröger N. Challenges and Pitfalls of Research Designs Involving Magnesium-Based Biomaterials: An Overview. Int J Mol Sci 2024; 25:6242. [PMID: 38892430 PMCID: PMC11172609 DOI: 10.3390/ijms25116242] [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: 04/17/2024] [Revised: 05/31/2024] [Accepted: 06/01/2024] [Indexed: 06/21/2024] Open
Abstract
Magnesium-based biomaterials hold remarkable promise for various clinical applications, offering advantages such as reduced stress-shielding and enhanced bone strengthening and vascular remodeling compared to traditional materials. However, ensuring the quality of preclinical research is crucial for the development of these implants. To achieve implant success, an understanding of the cellular responses post-implantation, proper model selection, and good study design are crucial. There are several challenges to reaching a safe and effective translation of laboratory findings into clinical practice. The utilization of Mg-based biomedical devices eliminates the need for biomaterial removal surgery post-healing and mitigates adverse effects associated with permanent biomaterial implantation. However, the high corrosion rate of Mg-based implants poses challenges such as unexpected degradation, structural failure, hydrogen evolution, alkalization, and cytotoxicity. The biocompatibility and degradability of materials based on magnesium have been studied by many researchers in vitro; however, evaluations addressing the impact of the material in vivo still need to be improved. Several animal models, including rats, rabbits, dogs, and pigs, have been explored to assess the potential of magnesium-based materials. Moreover, strategies such as alloying and coating have been identified to enhance the degradation rate of magnesium-based materials in vivo to transform these challenges into opportunities. This review aims to explore the utilization of Mg implants across various biomedical applications within cellular (in vitro) and animal (in vivo) models.
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Affiliation(s)
- Nourhan Hassan
- Department of Plastic, Reconstructive and Aesthetic Surgery, University Hospital Cologne, 50937 Cologne, Germany
- Institute for Laboratory Animal Science and Experimental Surgery, University of Aachen Medical Center, Faculty of Medicine, RWTH-Aachen University, 52074 Aachen, Germany
- Biotechnology Department, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Thomas Krieg
- Translational Matrix Biology, Medical Faculty, University of Cologne, 50937 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50937 Cologne, Germany
- Center for Molecular Medicine (CMMC), University of Cologne, 50937 Cologne, Germany
| | | | - Alexander D. Bach
- Department of Plastic, Aesthetic and Hand Surgery, St. Antonius Hospital Eschweiler, 52249 Eschweiler, Germany
| | - Nadja Kröger
- Institute for Laboratory Animal Science and Experimental Surgery, University of Aachen Medical Center, Faculty of Medicine, RWTH-Aachen University, 52074 Aachen, Germany
- Department of Plastic, Aesthetic and Hand Surgery, St. Antonius Hospital Eschweiler, 52249 Eschweiler, Germany
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Kim JJ, Kang H, Stewart KO. The Effect of Retained Hardware on Failure Among Prosthetic Joint Infections of the Knee in the Presence and Absence of Staphylococcus aureus. Open Forum Infect Dis 2024; 11:ofae306. [PMID: 38919513 PMCID: PMC11196895 DOI: 10.1093/ofid/ofae306] [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: 04/17/2024] [Accepted: 05/30/2024] [Indexed: 06/27/2024] Open
Abstract
Background The risk of failure associated with different surgical strategies for prosthetic joint infections (PJIs) among patients with and without Staphylococcus aureus is uncertain. The purpose of this study was to assess whether S. aureus modifies the association between retained hardware and failure following revision surgery for PJI of the knee. Methods This was a single-center retrospective cohort study of 106 first PJIs of the knee between 2016 and 2020 at a rural academic medical center. The exposure was retained hardware following revision surgery for PJI, and the outcomes were recurrent infection, any infection, and a composite outcome including any infection, unplanned revision, failure to undergo reimplantation, amputation, or death within 2 years of revision. We used negative binomial regression to quantify the association between the exposure and outcome and to assess the presence of S. aureus as an effect modifier. Results Retained hardware was significantly associated with failure when defined as recurrent infection among S. aureus PJI (adjusted risk difference [aRD], 0.38; 95% CI, 0.12-0.64) but not in the absence of S. aureus (aRD, -0.02; 95% CI, -0.17 to 0.13), and S. aureus was an effect modifier (P interaction = .01). Conclusions We report a significant association between the presence of retained hardware and recurrent infection among S. aureus PJI of the knee, but not for non-S. aureus PJI. This could help inform the surgical management of PJI of the knee in cases where the microbiology is known before surgery.
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Affiliation(s)
- Justin J Kim
- Section of Infectious Disease and International Health, Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire, USA
- Geisel School of Medicine at Dartmouth College, Hanover, New Hampshire, USA
- Collaborative Healthcare-associated Infection Prevention Program, Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire, USA
| | - HeeEun Kang
- Section of Infectious Disease and International Health, Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire, USA
- Geisel School of Medicine at Dartmouth College, Hanover, New Hampshire, USA
- The Dartmouth Institute for Health Policy and Clinical Practice, Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire, USA
| | - Kathleen O Stewart
- Collaborative Healthcare-associated Infection Prevention Program, Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire, USA
- Quality Assurance and Safety, Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire, USA
- Quality Assurance and Safety, Dartmouth Health, Lebanon, New Hampshire, USA
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8
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Kumari P, Banerjee SK, Murty US, Ravichandiran V, Mohan U. Harnessing the combined effect of antivirulence agent trans-chalcone with bactericidal curcumin against sortase A enzyme to tackle Gram-positive bacterial infections. Folia Microbiol (Praha) 2024; 69:639-652. [PMID: 37930610 DOI: 10.1007/s12223-023-01097-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 10/06/2023] [Indexed: 11/07/2023]
Abstract
Gram-positive bacteria are responsible for a wide range of infections in humans. In most Gram-positive bacteria, sortase A plays a significant role in attaching virulence factors to the bacteria's cell wall. These cell surface proteins play a significant role in virulence and pathogenesis. Even though antibiotics are available to treat these infections, there is a continuous search for an alternative strategy due to an increase in antibiotic resistance. Thus, using anti-sortase drugs to combat these bacterial infections may be a promising approach. Here, we describe a method for targeting Gram-positive bacterial infection by combining curcumin and trans-chalcone as sortase A inhibitors. We have used curcumin and trans-chalcone alone and in combination as a sortase A inhibitor. We have seen ~78%, ~43%, and ~94% inhibition when treated with curcumin, trans-chalcone, and a combination of both compounds, respectively. The compounds have also shown a significant effect on biofilm formation, IgG binding, protein A recruitment, and IgG deposition. We discovered that combining curcumin and trans-chalcone is more effective against Gram-positive bacteria than either compound alone. The present work demonstrated that a combination of these natural compounds could be used as an antivirulence therapy against Gram-positive bacterial infection.
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Affiliation(s)
- Poonam Kumari
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, 781101, India
| | - Sanjay K Banerjee
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, 781101, India
| | | | - Velayutham Ravichandiran
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Kolkata, 700054, India
| | - Utpal Mohan
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Kolkata, 700054, India.
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Akrami S, Ekrami A, Avarvand AY. Biofilm generation and antibiotic resistant profile of extensive and multidrug resistant Pseudomonas aeruginosa from burn patients in Ahvaz: A cross-sectional study. Health Sci Rep 2024; 7:e2138. [PMID: 38899004 PMCID: PMC11186040 DOI: 10.1002/hsr2.2138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 04/28/2024] [Accepted: 05/06/2024] [Indexed: 06/21/2024] Open
Abstract
Background and Aims Multidrug and extensive drug-resistant Pseudomonas aeruginosa was extracted from burn patients referring to burn centers in southwest Iran so that biofilm generation and antibiotic resistance could be investigated. Methods A specific primer was used to confirm all our considered 110 P. aeruginosa culture-positive reports on 345 burn patients. The resistance of P. aeruginosa to seven antibiotics and Colistin with minimum inhibitory concentration (MIC) was assessed. Biofilm formation was assessed by the phenotypic study of specimens under Congo red agar and microtiter plate assays. Results One hundred and 10 clinical P. aeruginosa isolates taken from burn wound infections were validated. Among P. aeruginosa isolates, Piperacillin, Ceftazidime, Maeropenem, Gentamycin, and Gatifloacin had the highest resistance to antibiotics, while Ticarcillin-Clavulanic acid and Ceftolozane-Tazobactam showed the least resistance. MICs were then evaluated via the E test. Seven isolates were resistant to colistin. Colistin reference MICs for multidrug-resistant P. aeruginosa prevalence was 38%, while it was 22% for extensively drug-resistant (XDR) P. aeruginosa. One P. aeruginosa was pandrug-resistant (PDR). Under Congo red agar test, 66 isolates (67%) formed biofilms and black colonies, whereas 44 isolates (50%) had red colonies. In MTP, 76% formed biofilm. 40%, 32%, 21% of the isolates were strong, moderate, and weak biofilm formers, respectively, while 43% did not form biofilms. Conclusion The P. aeruginosa resistance to antimicrobial agents has largely challenged the control of the infection. Accordingly, a higher resistance occurred when the isolates were transferred to the patients. Less than 50% P. aeruginosa samples generated strong biofilms. Consequently, hygienic measurements are essential to inhibit P. aeruginosa transmission to hospitalized patients.
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Affiliation(s)
- Sousan Akrami
- Department of Microbiology, School of MedicineTehran University of Medical SciencesTehranIran
| | - Alireza Ekrami
- Department of Laboratory Sciences, School of Allied Medical SciencesAhvaz Jundishapur University of Medical SciencesAhvazIran
| | - Arshid Y. Avarvand
- Department of Laboratory Sciences, School of Allied Medical SciencesAhvaz Jundishapur University of Medical SciencesAhvazIran
- Infectious and Tropical Diseases Research Center, Health Research InstituteAhvaz Jundishapur University of Medical SciencesAhvazIran
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10
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Azari R, Yousefi MH, Fallah AA, Alimohammadi A, Nikjoo N, Wagemans J, Berizi E, Hosseinzadeh S, Ghasemi M, Mousavi Khaneghah A. Controlling of foodborne pathogen biofilms on stainless steel by bacteriophages: A systematic review and meta-analysis. Biofilm 2024; 7:100170. [PMID: 38234712 PMCID: PMC10793095 DOI: 10.1016/j.bioflm.2023.100170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/27/2023] [Accepted: 12/10/2023] [Indexed: 01/19/2024] Open
Abstract
This study investigates the potential of using bacteriophages to control foodborne pathogen biofilms on stainless steel surfaces in the food industry. Biofilm-forming bacteria can attach to stainless steel surfaces, rendering them difficult to eradicate even after a thorough cleaning and sanitizing procedures. Bacteriophages have been proposed as a possible solution, as they can penetrate biofilms and destroy bacterial cells within, reducing the number of viable bacteria and preventing the growth and spread of biofilms. This systematic review and meta-analysis evaluates the potential of bacteriophages against different biofilm-forming foodborne bacteria, including Cronobacter sakazakii, Escherichia coli, Staphylococcus aureus, Pseudomonas fluorescens, Pseudomonas aeruginosa and Listeria monocytogenes. Bacteriophage treatment generally causes a significant average reduction of 38 % in biofilm formation of foodborne pathogens on stainless steel. Subgroup analyses revealed that phages are more efficient in long-duration treatment. Also, applying a cocktail of phages is 1.26-fold more effective than applying individual phages. Phages at concentrations exceeding 107 PFU/ml are significantly more efficacious in eradicating bacteria within a biofilm. The antibacterial phage activity decreases substantially by 3.54-fold when applied at 4 °C compared to temperatures above 25 °C. This analysis suggests that bacteriophages can be a promising solution for controlling biofilms in the food industry.
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Affiliation(s)
- Rahim Azari
- Department of Food Hygiene and Quality Control, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Hashem Yousefi
- Department of Food Hygiene and Public Health, School of Veterinary Medicine, Shiraz University, Shiraz, 71946-84471, Iran
| | - Aziz A. Fallah
- Department of Food Hygiene and Quality Control, School of Veterinary Medicine, Shahrekord University, Shahrekord, 34141, Iran
| | - Arezoo Alimohammadi
- Department of Food Hygiene and Quality Control, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Nastaran Nikjoo
- Department of Food Hygiene and Quality Control, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Enayat Berizi
- Department of Food Hygiene and Quality Control, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Saeid Hosseinzadeh
- Department of Food Hygiene and Public Health, School of Veterinary Medicine, Shiraz University, Shiraz, 71946-84471, Iran
| | - Mohammad Ghasemi
- Department of Pharmacology, School of Veterinary Medicine, Shahrekord University, P. O. Box 115, Shahrekord, Iran
| | - Amin Mousavi Khaneghah
- Food Health Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
- Department of Fruit and Vegetable Product Technology, Prof. Wacław Dąbrowski Institute of Agricultural and Food Biotechnology—State Research Institute, 36 Rakowiecka St., 02-532, Warsaw, Poland
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11
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Nadeem S, Aziz S, Nawaz H, Majeed MI, Alghamdi AA, Shahid M, Iqbal MA, Manahal S, Rehman N, Anwer A, Ghafoor N, Imran M. Surface-enhanced Raman spectroscopy for the study of interaction of an antibacterial agent ([bis(1,3-dipentyl-1 H-imidazol-2(3 H)-ylidene)silver(i)]bromide) with Bacillus subtilis bacterial biofilms. RSC Adv 2024; 14:17389-17396. [PMID: 38813128 PMCID: PMC11134349 DOI: 10.1039/d4ra02047b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Accepted: 05/07/2024] [Indexed: 05/31/2024] Open
Abstract
Bacterial resistance towards antibiotics is a significant challenge for public health, and surface-enhanced Raman spectroscopy (SERS) has great potential to be a promising technique to provide detailed information about the effect of antibiotics against biofilms. SERS is employed to check the antibacterial potential of a lab synthesized drug ([bis(1,3-dipentyl-1H-imidazol-2(3H)-ylidene)silver(i)] bromide) against Bacillus subtilis and to analyze various SERS spectral features of unexposed and exposed Bacillus strains by observing biochemical changes in DNA, protein, lipid and carbohydrate contents induced by the lab synthesized imidazole derivative. Further, PCA and PLS-DA are employed to differentiate the SERS features. PCA was employed to differentiate the biochemical contents of unexposed and exposed Bacillus strains in the form of clusters of their representative SERS spectra and is also helpful in the pairwise comparison of two spectral data sets. PLS-DA provides authentic information to discriminate different unexposed and exposed Bacillus strains with 91% specificity, 93% sensitivity and 97% accuracy. SERS can be employed to characterize the complex and heterogeneous system of biofilms and to check the changes in spectral features of Bacillus strains by exposure to the lab synthesized imidazole derivative.
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Affiliation(s)
- Sana Nadeem
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad (38000) Pakistan
| | - Saima Aziz
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad (38000) Pakistan
| | - Haq Nawaz
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad (38000) Pakistan
| | - Muhammad Irfan Majeed
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad (38000) Pakistan
| | - Abeer Ahmed Alghamdi
- Department of Physics, College of Science, Princess Nourah bint Abdulrahman University P. O. Box 84428 Riyadh 11671 Saudi Arabia
| | - Muhammad Shahid
- Department of Biochemistry, University of Agriculture Faisalabad Faisalabad (38000) Pakistan
| | - Muhammad Adnan Iqbal
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad (38000) Pakistan
| | - Shaista Manahal
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad (38000) Pakistan
| | - Nimra Rehman
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad (38000) Pakistan
| | - Ayesha Anwer
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad (38000) Pakistan
| | - Nida Ghafoor
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad (38000) Pakistan
| | - Muhammad Imran
- Department of Chemistry, Faculty of Science, King Khalid University P. O. Box 9004 Abha (61413) Saudi Arabia
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Wang M, Zhang Z, Xie Q, Pan J, Ma C, Zhang G. High-Performance Polyurea Improved by Reactive Nanocluster for Antibiofouling. ACS APPLIED MATERIALS & INTERFACES 2024; 16:26733-26742. [PMID: 38718383 DOI: 10.1021/acsami.4c02070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2024]
Abstract
Polyurea has found applications in protective coatings. Yet, the too fast polymerization and lack of functions limit its application. Herein, we report a high-performance polyurea via the stepwise polymerization of an isocyanate (NCO)-terminated prepolymer consisting of poly(propylene glycol)-block-poly(ethylene glycol)-block-poly(propylene glycol) (PPG-b-PEG-b-PPG) with a nanocluster synthesized via the hydrolysis of N-phenylaminomethyltriethoxysilane. Such a nanocluster contains low-reactivity secondary amines, so the polymerization of polyurea can be slowed down (over 1 h), which improves its wetting and adhesion to a substrate. The residual silanol groups on the nanocluster further increase the adhesion. Such polyurea exhibits high adhesion on various substrates, including glass, ceramic, steel, copper, titanium, wood, and natural rubber (∼2.35-14.64 MPa). Besides, the nanoclusters can cross-link the prepolymer into a tough network, endowing the polyurea with a high mechanical strength of ∼25 MPa, much higher than the traditional polyaspartic ester polyurea. On the other hand, the PEG segments enable the polyurea to have good fouling resistance against proteins (fibrinogen absorption was reduced by over 90%), bacteria (RBA of S. aureusE. coli and Pseudomonas sp. was less than 10%), as well as diatom (diatom density was less than 100 cells/mm2). The polyurea is expected to find applications in biomedical engineering and marine antifouling.
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Affiliation(s)
- Man Wang
- Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, PR China
| | - Zhipeng Zhang
- Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, PR China
| | - Qingyi Xie
- Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, PR China
| | - Jiansen Pan
- Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, PR China
| | - Chunfeng Ma
- Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, PR China
| | - Guangzhao Zhang
- Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, PR China
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Korytárová N, Kramer S, Harms O, Volk HA. Clinical relevance of positive intraoperative bacterial culture in tibial plateau leveling osteotomy in dogs: a retrospective study. BMC Vet Res 2024; 20:175. [PMID: 38704532 PMCID: PMC11069177 DOI: 10.1186/s12917-024-04007-w] [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: 02/11/2024] [Accepted: 04/04/2024] [Indexed: 05/06/2024] Open
Abstract
BACKGROUND Tibial plateau leveling osteotomy (TPLO) belongs to the most frequently used surgical method for the treatment of cranial cruciate ligament rupture in dogs. Surgical site infection (SSI) is one of the possible postoperative complications. The aim of this study was to evaluate the diagnostic value of intraoperative bacterial culture as a tool for the detection of intraoperative bacterial contamination progressing to infection development in canine TPLO. Electronic patient records from dogs who underwent TPLO between January 2018 to December 2020 were retrospectively reviewed. Intraoperative bacterial culture results, used antimicrobial drugs and presence of SSI were recorded. RESULTS Ninety-eight dogs were included in the study. SSI rate was 10.2%. All dogs who developed SSI (n = 10) had negative intraoperative bacterial cultures. None of the dogs with positive intraoperative bacterial culture (n = 6) developed SSI. The most cultured bacteria causing SSI was Staphylococcus pseudintermedius (n = 4). CONCLUSIONS Intraoperative bacterial culture in dogs undergoing TPLO is not suitable as a predictor of surgical site infection.
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Affiliation(s)
- Natália Korytárová
- Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Hannover, Bünteweg 9, 30559, Hannover, Germany
| | - Sabine Kramer
- Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Hannover, Bünteweg 9, 30559, Hannover, Germany
| | - Oliver Harms
- Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Hannover, Bünteweg 9, 30559, Hannover, Germany
| | - Holger A Volk
- Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Hannover, Bünteweg 9, 30559, Hannover, Germany.
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14
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Pérez-Estay B, Cordero ML, Sepúlveda N, Soto R. Accumulation and depletion of E. coli in surfaces mediated by curvature. Phys Rev E 2024; 109:054601. [PMID: 38907493 DOI: 10.1103/physreve.109.054601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 03/27/2024] [Indexed: 06/24/2024]
Abstract
Can topography be used to control bacteria accumulation? We address this question in the model system of smooth-swimming and run-and-tumble Escherichia coli swimming near a sinusoidal surface, and show that the accumulation of bacteria is determined by the characteristic curvature of the surface. For low curvatures, cells swim along the surface due to steric alignment and are ejected from the surface when they reach the peak of the sinusoid. Increasing curvature enhances this effect and reduces the density of bacteria in the curved surface. However, for curvatures larger than κ^{*}≈0.25µm^{-1}, bacteria become trapped in the valleys, where they can remain for long periods of time. Minimal simulations considering only steric interactions with the surface reproduce these results and give insights into the physical mechanisms defining the critical curvature, which is found to scale with the inverse of the bacterial length. We show that for curvatures larger than κ^{*}, the otherwise stable alignment with the wall becomes unstable while the stable orientation is now perpendicular to the wall, thus predicting accurately the onset of trapping at the valleys.
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Affiliation(s)
- Benjamín Pérez-Estay
- Departamento de Física, FCFM, Universidad de Chile, Av. Beauchef 850, 8370458 Santiago, Chile
- Laboratoire PMMH-ESPCI Paris, PSL Research University, Sorbonne University, University Paris-Diderot, 7, Quai Saint-Bernard, 75005 Paris, France
| | - María Luisa Cordero
- Departamento de Física, FCFM, Universidad de Chile, Av. Beauchef 850, 8370458 Santiago, Chile
| | - Néstor Sepúlveda
- School of Engineering and Sciences, Universidad Adolfo Ibáñez, Diagonal las Torres 2640, Peñalolén, 7941169 Santiago, Chile
| | - Rodrigo Soto
- Departamento de Física, FCFM, Universidad de Chile, Av. Beauchef 850, 8370458 Santiago, Chile
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15
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Castagnini D, Palma K, Jara-Wilde J, Navarro N, González MJ, Toledo J, Canales-Huerta N, Scavone P, Härtel S. Proteus mirabilis biofilm expansion microscopy yields over 4-fold magnification for super-resolution of biofilm structure and subcellular DNA organization. J Microbiol Methods 2024; 220:106927. [PMID: 38561125 DOI: 10.1016/j.mimet.2024.106927] [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: 02/09/2024] [Revised: 03/28/2024] [Accepted: 03/29/2024] [Indexed: 04/04/2024]
Abstract
Bacterial biofilms form when bacteria attach to surfaces and generate an extracellular matrix that embeds and stabilizes a growing community. Detailed visualization and quantitative analysis of biofilm architecture by optical microscopy are limited by the law of diffraction. Expansion Microscopy (ExM) is a novel Super-Resolution technique where specimens are physically enlarged by a factor of ∼4, prior to observation by conventional fluorescence microscopy. ExM requires homogenization of rigid constituents of biological components by enzymatic digestion. We developed an ExM approach capable of expanding 48-h old Proteus mirabilis biofilms 4.3-fold (termed PmbExM), close to the theoretic maximum expansion factor without gross shape distortions. Our protocol, based on lytic and glycoside-hydrolase enzymatic treatments, degrades rigid components in bacteria and extracellular matrix. Our results prove PmbExM to be a versatile and easy-to-use Super-Resolution approach for enabling studies of P. mirabilis biofilm architecture, assembly, and even intracellular features, such as DNA organization.
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Affiliation(s)
- Dante Castagnini
- Laboratory for Scientific Image Analysis SCIAN-Lab, Integrative Biology Program, Institute of Biomedical Sciences ICBM, Faculty of Medicine, University of Chile, Santiago, Chile; Biomedical Neuroscience Institute BNI, Independencia, Santiago, Chile
| | - Karina Palma
- Laboratory for Scientific Image Analysis SCIAN-Lab, Integrative Biology Program, Institute of Biomedical Sciences ICBM, Faculty of Medicine, University of Chile, Santiago, Chile; Biomedical Neuroscience Institute BNI, Independencia, Santiago, Chile; Centro de Informática Médica y Telemedicina CIMT, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Jorge Jara-Wilde
- Laboratory for Scientific Image Analysis SCIAN-Lab, Integrative Biology Program, Institute of Biomedical Sciences ICBM, Faculty of Medicine, University of Chile, Santiago, Chile; Biomedical Neuroscience Institute BNI, Independencia, Santiago, Chile; Centro de Informática Médica y Telemedicina CIMT, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Nicolás Navarro
- Advanced Center for Chronic Diseases ACCDiS, Santiago, Chile.; Laboratorio de Biofilms Microbianos, Departamento de Microbiología, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay
| | - María José González
- Laboratorio de Biofilms Microbianos, Departamento de Microbiología, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay
| | - Jorge Toledo
- Red de Equipamiento Científico Avanzado REDECA, Institute of Biomedical Sciences ICBM, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Nicole Canales-Huerta
- Laboratory for Scientific Image Analysis SCIAN-Lab, Integrative Biology Program, Institute of Biomedical Sciences ICBM, Faculty of Medicine, University of Chile, Santiago, Chile; Biomedical Neuroscience Institute BNI, Independencia, Santiago, Chile
| | - Paola Scavone
- Laboratorio de Biofilms Microbianos, Departamento de Microbiología, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay
| | - Steffen Härtel
- Laboratory for Scientific Image Analysis SCIAN-Lab, Integrative Biology Program, Institute of Biomedical Sciences ICBM, Faculty of Medicine, University of Chile, Santiago, Chile; Biomedical Neuroscience Institute BNI, Independencia, Santiago, Chile; Centro de Informática Médica y Telemedicina CIMT, Faculty of Medicine, University of Chile, Santiago, Chile; National Center for Health Information Systems CENS, Santiago, Chile.; Red de Equipamiento Científico Avanzado REDECA, Institute of Biomedical Sciences ICBM, Faculty of Medicine, University of Chile, Santiago, Chile; Centro de Modelamiento Matemático, Universidad de Chile, Beauchef 851, Casilla 170-3, Santiago, Chile.
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16
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Javed MA, Ivanovich N, Messinese E, Liu R, Astorga SE, Yeo YP, Idapalapati S, Lauro FM, Wade SA. The Role of Metallurgical Features in the Microbially Influenced Corrosion of Carbon Steel: A Critical Review. Microorganisms 2024; 12:892. [PMID: 38792722 PMCID: PMC11124232 DOI: 10.3390/microorganisms12050892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 04/23/2024] [Accepted: 04/25/2024] [Indexed: 05/26/2024] Open
Abstract
Microbially influenced corrosion (MIC) is a potentially critical degradation mechanism for a wide range of materials exposed to environments that contain relevant microorganisms. The likelihood and rate of MIC are affected by microbiological, chemical, and metallurgical factors; hence, the understanding of the mechanisms involved, verification of the presence of MIC, and the development of mitigation methods require a multidisciplinary approach. Much of the recent focus in MIC research has been on the microbiological and chemical aspects, with less attention given to metallurgical attributes. Here, we address this knowledge gap by providing a critical synthesis of the literature on the metallurgical aspects of MIC of carbon steel, a material frequently associated with MIC failures and widely used in construction and infrastructure globally. The article begins by introducing the process of MIC, then progresses to explore the complexities of various metallurgical factors relevant to MIC in carbon steel. These factors include chemical composition, grain size, grain boundaries, microstructural phases, inclusions, and welds, highlighting their potential influence on MIC processes. This review systematically presents key discoveries, trends, and the limitations of prior research, offering some novel insights into the impact of metallurgical factors on MIC, particularly for the benefit of those already familiar with other aspects of MIC. The article concludes with recommendations for documenting metallurgical data in MIC research. An appreciation of relevant metallurgical attributes is essential for a critical assessment of a material's vulnerability to MIC to advance research practices and to broaden the collective knowledge in this rapidly evolving area of study.
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Affiliation(s)
- Muhammad Awais Javed
- School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Melbourne, VIC 3122, Australia;
| | - Nicolò Ivanovich
- Asian School of the Environment, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore;
| | - Elena Messinese
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Via Luigi Mancinelli, 7, 20131 Milan, Italy;
| | - Ruiliang Liu
- Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, 60 Nanyang Drive, Singapore 637751, Singapore; (R.L.); (S.E.A.); (Y.P.Y.)
- Curtin Corrosion Centre, Faculty of Science and Engineering, Western Australia School of Mines (WASM), Curtin University, Perth, WA 6102, Australia
| | - Solange E. Astorga
- Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, 60 Nanyang Drive, Singapore 637751, Singapore; (R.L.); (S.E.A.); (Y.P.Y.)
| | - Yee Phan Yeo
- Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, 60 Nanyang Drive, Singapore 637751, Singapore; (R.L.); (S.E.A.); (Y.P.Y.)
| | - Sridhar Idapalapati
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore;
| | - Federico M. Lauro
- Asian School of the Environment, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore;
- Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, 60 Nanyang Drive, Singapore 637751, Singapore; (R.L.); (S.E.A.); (Y.P.Y.)
- Nanyang Environment & Water Research Institute (NEWRI), Nanyang Technological University, Cleantech ONE, 1 Cleantech Loop, Singapore 637141, Singapore
| | - Scott A. Wade
- School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Melbourne, VIC 3122, Australia;
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Ahmed GE, Elshahid ZA, El-Sawy ER, Abdel-Aziz MS, Abdel-Aziem A. Synthesis, biofilm formation inhibitory, and inflammation inhibitory activities of new coumarin derivatives. Sci Rep 2024; 14:9106. [PMID: 38643226 PMCID: PMC11032357 DOI: 10.1038/s41598-024-59072-w] [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: 07/23/2023] [Accepted: 04/07/2024] [Indexed: 04/22/2024] Open
Abstract
Coumarins are heterocycles of great interest in the development of valuable active structures in chemistry and biological domains. The ability of coumarins to inhibit biofilm formation of Gram positive bacterium (Staphylococcus aureus), Gram negative bacterium (Escherichia coli) as well as the methicillin-resistant S. aureus (MRSA) has been previously described. In the present work, new hybrid coumarin-heterocycles have been synthesized via the reaction of coumarin-6-sulfonyl chloride and 6-aminocoumarin with different small heterocycle moieties. The biological efficacy of the new compounds was evaluated towards their ability to inhibit biofilm formation and their anti-inflammatory properties. The antimicrobial activities of the newly synthesized compounds were tested against Gram positive bacterium (S. aureus ATCC 6538), Gram negative bacterium (E. coli ATCC 25922), yeast (Candida albicans ATCC 10231) and the fungus (Aspergillus niger NRRL-A326). Compounds 4d, 4e, 4f, 6a and 9 showed significant MIC and MBC values against S. aureus, E. coli, C. albicans, and methicillin-resistant S. aureus (MRSA) with especial incidence on compound 9 which surpasses all the other compounds giving MIC and MBC values of (4.88 and 9.76 µg/mL for S. aureus), (78.13 and 312.5 µg/mL for E. coli), (9.77 and 78.13 µg/mL for C. albicans), and (39.06 and 76.7 µg/mL for MRSA), respectively. With reference to the antibiofilm activity, compound 9 exhibited potent antibiofilm activity with IC50 of 60, 133.32, and 19.67 µg/mL against S. aureus, E. coli, and MRSA, (respectively) considering the reference drug (neomycin). Out of all studied compounds, the anti-inflammatory results indicated that compound 4d effectively inhibited nitric oxide production in lipopolysaccharide-(LPS-) stimulated RAW264.7 macrophage cells, giving NO% inhibition of 70% compared to Sulindac (55.2%).
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Affiliation(s)
- Ghada E Ahmed
- High Canal Institute of Engineering & Technology, Suez, Egypt
| | - Zeinab A Elshahid
- Chemistry of Natural and Microbial Products Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre, Giza, Egypt
| | - Eslam Reda El-Sawy
- Chemistry of Natural Compounds Department, National Research Centre, Dokki, Giza, 12622, Egypt
| | - Mohamed S Abdel-Aziz
- Microbial Chemistry Department, Genetic Engineering and Biotechnology Institute, National Research Centre, Dokki, Giza, 12622, Egypt
| | - Anhar Abdel-Aziem
- Chemistry Department, Faculty of Science (Girl's Branch), Al-Azhar University, Cairo, 11754, Egypt.
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18
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Chen Y, Gao Y, Li Y, Yin J. Anti-Biofilm Activity of Assamsaponin A, Theasaponin E1, and Theasaponin E2 against Candida albicans. Int J Mol Sci 2024; 25:3599. [PMID: 38612411 PMCID: PMC11011434 DOI: 10.3390/ijms25073599] [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: 01/31/2024] [Revised: 03/14/2024] [Accepted: 03/20/2024] [Indexed: 04/14/2024] Open
Abstract
Biofilm formation plays a crucial role in the pathogenesis of Candida albicans and is significantly associated with resistance to antifungal agents. Tea seed saponins, a class of non-ionic triterpenes, have been proven to have fungicidal effects on planktonic C. albicans. However, their anti-biofilm activity and mechanism of action against C. albicans remain unclear. In this study, the effects of three Camellia sinensis seed saponin monomers, namely, theasaponin E1 (TE1), theasaponin E2 (TE2), and assamsaponin A (ASA), on the metabolism, biofilm development, and expression of the virulence genes of C. albicans were evaluated. The results of the XTT reduction assay and crystal violet (CV) staining assay demonstrated that tea seed saponin monomers concentration-dependently suppressed the adhesion and biofilm formation of C. albicans and were able to eradicate mature biofilms. The compounds were in the following order in terms of their inhibitory effects: ASA > TE1 > TE2. The mechanisms were associated with reductions in multiple crucial virulence factors, including cell surface hydrophobicity (CSH), adhesion ability, hyphal morphology conversion, and phospholipase activity. It was further demonstrated through qRT-PCR analysis that the anti-biofilm activity of ASA and TE1 against C. albicans was attributed to the inhibition of RAS1 activation, which consequently suppressed the cAMP-PKA and MAPK signaling pathways. Conversely, TE2 appeared to regulate the morphological turnover and hyphal growth of C. albicans via a pathway that was independent of RAS1. These findings suggest that tea seed saponin monomers are promising innovative agents against C. albicans.
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Affiliation(s)
- Yuhong Chen
- Key Laboratory of Tea Biology and Resources Utilization, Tea Research Institute, Chinese Academy of Agricultural Sciences, Ministry of Agriculture, 9 South Meiling Road, Hangzhou 310008, China; (Y.C.); (Y.L.)
- Tea Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
| | - Ying Gao
- Key Laboratory of Tea Biology and Resources Utilization, Tea Research Institute, Chinese Academy of Agricultural Sciences, Ministry of Agriculture, 9 South Meiling Road, Hangzhou 310008, China; (Y.C.); (Y.L.)
| | - Yifan Li
- Key Laboratory of Tea Biology and Resources Utilization, Tea Research Institute, Chinese Academy of Agricultural Sciences, Ministry of Agriculture, 9 South Meiling Road, Hangzhou 310008, China; (Y.C.); (Y.L.)
| | - Junfeng Yin
- Key Laboratory of Tea Biology and Resources Utilization, Tea Research Institute, Chinese Academy of Agricultural Sciences, Ministry of Agriculture, 9 South Meiling Road, Hangzhou 310008, China; (Y.C.); (Y.L.)
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19
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Jalil AT, Alrawe RTA, Al-Saffar MA, Shaghnab ML, Merza MS, Abosaooda M, Latef R. The use of combination therapy for the improvement of colistin activity against bacterial biofilm. Braz J Microbiol 2024; 55:411-427. [PMID: 38030866 PMCID: PMC10920569 DOI: 10.1007/s42770-023-01189-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 10/27/2023] [Indexed: 12/01/2023] Open
Abstract
Colistin is used as a last resort for the management of infections caused by multi-drug resistant (MDR) bacteria. However, the use of this antibiotic could lead to different side effects, such as nephrotoxicity, in most patients, and the high prevalence of colistin-resistant strains restricts the use of colistin in the clinical setting. Additionally, colistin could induce resistance through the increased formation of biofilm; biofilm-embedded cells are highly resistant to antibiotics, and as with other antibiotics, colistin is impaired by bacteria in the biofilm community. In this regard, the researchers used combination therapy for the enhancement of colistin activity against bacterial biofilm, especially MDR bacteria. Different antibacterial agents, such as antimicrobial peptides, bacteriophages, natural compounds, antibiotics from different families, N-acetylcysteine, and quorum-sensing inhibitors, showed promising results when combined with colistin. Additionally, the use of different drug platforms could also boost the efficacy of this antibiotic against biofilm. The mentioned colistin-based combination therapy not only could suppress the formation of biofilm but also could destroy the established biofilm. These kinds of treatments also avoided the emergence of colistin-resistant subpopulations, reduced the required dosage of colistin for inhibition of biofilm, and finally enhanced the dosage of this antibiotic at the site of infection. However, the exact interaction of colistin with other antibacterial agents has not been elucidated yet; therefore, further studies are required to identify the precise mechanism underlying the efficient removal of biofilms by colistin-based combination therapy.
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Affiliation(s)
| | | | - Montaha A Al-Saffar
- Community Health Department, Institute of Medical Technology/Baghdad, Middle Technical University, Baghdad, Iraq
| | | | - Muna S Merza
- Prosthetic Dental Techniques Department, Al-Mustaqbal University College, Babylon, 51001, Iraq
| | - Munther Abosaooda
- Medical Laboratory Technology Department, College of Medical Technology, The Islamic University, Najaf, Iraq
| | - Rahim Latef
- Medical Technical College, Al-Farahidi University, Baghdad, Iraq
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20
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Schuelke-Sanchez A, Yennawar NH, Weinert EE. Oxygen-selective regulation of cyclic di-GMP synthesis by a globin coupled sensor with a shortened linking domain modulates Shewanella sp. ANA-3 biofilm. J Inorg Biochem 2024; 252:112482. [PMID: 38218138 DOI: 10.1016/j.jinorgbio.2024.112482] [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: 09/28/2023] [Revised: 01/03/2024] [Accepted: 01/04/2024] [Indexed: 01/15/2024]
Abstract
Bacteria utilize heme proteins, such as globin coupled sensors (GCSs), to sense and respond to oxygen levels. GCSs are predicted in almost 2000 bacterial species and consist of a globin domain linked by a central domain to a variety of output domains, including diguanylate cyclase domains that synthesize c-di-GMP, a major regulator of biofilm formation. To investigate the effects of middle domain length and heme edge residues on GCS diguanylate cyclase activity and cellular function, a putative diguanylate cyclase-containing GCS from Shewanella sp. ANA-3 (SA3GCS) was characterized. Binding of O2 to the heme resulted in activation of diguanylate cyclase activity, while NO and CO binding had minimal effects on catalysis, demonstrating that SA3GCS exhibits greater ligand selectivity for cyclase activation than many other diguanylate cyclase-containing GCSs. Small angle X-ray scattering analysis of dimeric SA3GCS identified movement of the cyclase domains away from each other, while maintaining the globin dimer interface, as a potential mechanism for regulating cyclase activity. Comparison of the Shewanella ANA-3 wild type and SA3GCS deletion (ΔSA3GCS) strains identified changes in biofilm formation, demonstrating that SA3GCS diguanylate cyclase activity modulates Shewanella phenotypes.
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Affiliation(s)
- Ariel Schuelke-Sanchez
- Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, PA 16802, USA
| | - Neela H Yennawar
- The Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA 16802, USA
| | - Emily E Weinert
- Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, PA 16802, USA; Department of Chemistry, Pennsylvania State University, University Park, PA 16802, USA.
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21
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Thamizhchelvan AM, Masoud AR, Su S, Lu Y, Peng H, Kobayashi Y, Wang Y, Archer NK, Hong S. Bactericidal Efficacy of the Combination of Maresin-like Proresolving Mediators and Carbenicillin Action on Biofilm-Forming Burn Trauma Infection-Related Bacteria. Int J Mol Sci 2024; 25:2792. [PMID: 38474038 PMCID: PMC10932429 DOI: 10.3390/ijms25052792] [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: 01/26/2024] [Revised: 02/16/2024] [Accepted: 02/26/2024] [Indexed: 03/14/2024] Open
Abstract
Biofilm-associated bacterial infections are the major reason for treatment failure in many diseases including burn trauma infections. Uncontrolled inflammation induced by bacteria leads to materiality, tissue damage, and chronic diseases. Specialized proresolving mediators (SPMs), including maresin-like lipid mediators (MarLs), are enzymatically biosynthesized from omega-3 essential long-chain polyunsaturated fatty acids, especially docosahexaenoic acid (DHA), by macrophages and other leukocytes. SPMs exhibit strong inflammation-resolving activities, especially inflammation provoked by bacterial infection. In this study, we explored the potential direct inhibitory activities of three MarLs on Gram-positive (Staphylococcus aureus) and Gram-negative (Pseudomonas aeruginosa and Escherichia coli) bacteria in their biofilms that are leading bacteria in burn trauma-related infections. We also examined the effects of MarLs on the bactericidal activities of a typical broad-spectrum antibiotic, carbenicillin (carb), on these bacteria in their preformed biofilms. The results revealed that MarLs combined with carbenicillin can inhibit the survival of Gram-positive and Gram-negative bacteria in their biofilms although MarLs alone did not exhibit bactericidal activity. Thus, our findings suggest that the combination of MarLs and carbenicillin can lower the antibiotic requirements to kill the bacteria in preformed biofilms.
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Affiliation(s)
- Anbu Mozhi Thamizhchelvan
- Neuroscience Center of Excellence, School of Medicine, Louisiana State University Health New Orleans, 2020 Gravier St., New Orleans, LA 70112, USA
| | - Abdul-Razak Masoud
- Neuroscience Center of Excellence, School of Medicine, Louisiana State University Health New Orleans, 2020 Gravier St., New Orleans, LA 70112, USA
| | - Shanchun Su
- Neuroscience Center of Excellence, School of Medicine, Louisiana State University Health New Orleans, 2020 Gravier St., New Orleans, LA 70112, USA
| | - Yan Lu
- Neuroscience Center of Excellence, School of Medicine, Louisiana State University Health New Orleans, 2020 Gravier St., New Orleans, LA 70112, USA
| | - Hongying Peng
- Biostatistics, Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, OH 45221, USA
| | - Yuichi Kobayashi
- Department of Bioengineering, Tokyo Institute of Technology, Box B-52, Nagatsuta-cho 4259, Midori-ku, Yokohama 226-8501, Kanagawa, Japan
- Organization for the Strategic Coordination of Research and Intellectual Properties, Meiji University, 1-1-1 Higashimita, Tama-ku, Kawasaki 214-8571, Kanagawa, Japan
| | - Yu Wang
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, MD 21231, USA; (Y.W.); (N.K.A.)
| | - Nathan K. Archer
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, MD 21231, USA; (Y.W.); (N.K.A.)
| | - Song Hong
- Neuroscience Center of Excellence, School of Medicine, Louisiana State University Health New Orleans, 2020 Gravier St., New Orleans, LA 70112, USA
- Department of Ophthalmology, School of Medicine, Louisiana State University Health New Orleans, 2020 Gravier St., New Orleans, LA 70112, USA
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22
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Abulfaraj AA, Shami AY, Alotaibi NM, Alomran MM, Aloufi AS, Al-Andal A, AlHamdan NR, Alshehrei FM, Sefrji FO, Alsaadi KH, Abuauf HW, Alshareef SA, Jalal RS. Exploration of genes encoding KEGG pathway enzymes in rhizospheric microbiome of the wild plant Abutilon fruticosum. AMB Express 2024; 14:27. [PMID: 38381255 PMCID: PMC10881953 DOI: 10.1186/s13568-024-01678-4] [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: 12/22/2023] [Accepted: 01/28/2024] [Indexed: 02/22/2024] Open
Abstract
The operative mechanisms and advantageous synergies existing between the rhizobiome and the wild plant species Abutilon fruticosum were studied. Within the purview of this scientific study, the reservoir of genes in the rhizobiome, encoding the most highly enriched enzymes, was dominantly constituted by members of phylum Thaumarchaeota within the archaeal kingdom, phylum Proteobacteria within the bacterial kingdom, and the phylum Streptophyta within the eukaryotic kingdom. The ensemble of enzymes encoded through plant exudation exhibited affiliations with 15 crosstalking KEGG (Kyoto Encyclopaedia of Genes and Genomes) pathways. The ultimate goal underlying root exudation, as surmised from the present investigation, was the biosynthesis of saccharides, amino acids, and nucleic acids, which are imperative for the sustenance, propagation, or reproduction of microbial consortia. The symbiotic companionship existing between the wild plant and its associated rhizobiome amplifies the resilience of the microbial community against adverse abiotic stresses, achieved through the orchestration of ABA (abscisic acid) signaling and its cascading downstream effects. Emergent from the process of exudation are pivotal bioactive compounds including ATP, D-ribose, pyruvate, glucose, glutamine, and thiamine diphosphate. In conclusion, we hypothesize that future efforts to enhance the growth and productivity of commercially important crop plants under both favorable and unfavorable environmental conditions may focus on manipulating plant rhizobiomes.
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Affiliation(s)
- Aala A Abulfaraj
- Biological Sciences Department, College of Science & Arts, King Abdulaziz University, Rabigh 21911, Saudi Arabia.
| | - Ashwag Y Shami
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Nahaa M Alotaibi
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Maryam M Alomran
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Abeer S Aloufi
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Abeer Al-Andal
- Department of Biology, College of Science, King Khalid University, Abha 61413, Saudi Arabia
| | | | - Fatimah M Alshehrei
- Department of Biology, Jumum College University, Umm Al-Qura University, P.O. Box 7388, Makkah 21955, Saudi Arabia
| | - Fatmah O Sefrji
- Department of Biology, College of Science, Taibah University, Al-Madinah Al-Munawarah 30002, Saudi Arabia
| | - Khloud H Alsaadi
- Department of Biological Science, College of Science, University of Jeddah, Jeddah 21493, Saudi Arabia
| | - Haneen W Abuauf
- Department of Biology, Faculty of Applied Science, Umm Al-Qura University, Makkah 24381, Saudi Arabia
| | - Sahar A Alshareef
- Department of Biological Science, College of Science and Arts at Khulis, University of Jeddah, Jeddah 21921, Saudi Arabia
| | - Rewaa S Jalal
- Department of Biological Science, College of Science, University of Jeddah, Jeddah 21493, Saudi Arabia.
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23
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Upadhyay A, Pal D, Kumar A. Interrogating Salmonella Typhi biofilm formation and dynamics to understand antimicrobial resistance. Life Sci 2024; 339:122418. [PMID: 38219918 DOI: 10.1016/j.lfs.2024.122418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 01/02/2024] [Accepted: 01/07/2024] [Indexed: 01/16/2024]
Abstract
AIMS Salmonella Typhi biofilm-mediated infections are globally rising. Due to the emergence of drug resistance antibiotics did not show effective results against S. Typhi biofilm. Therefore, there is an urgent need for an in-depth interrogation of S. Typhi biofilm to understand its formation kinetics, compositions, and surface charge value. METHODS This study utilized the S. Typhi MTCC-733 strain from a microbial-type culture collection in India. The S. Typhi biofilm was formed on a glass slide in a biofilm development apparatus. Typhoidal biofilm analysis was done with the help of various assays such as a crystal violet assay, SEM analysis, FTIR analysis, Raman analysis, and zeta potential analysis. KEY FINDING This article contained a comprehensive assessment of the typhoid biofilm formation kinetics, biofilm compositions, and surface charge which revealed that cellulose was a major molecule in the typhoidal biofilm which can be used as a major biofilm drug target against typhoidal biofilm. SIGNIFICANCE This study provided interrogations about typhoidal biofilm kinetics which provided ideas about the biofilm composition. The cellulose molecule showed a major component of S. Typhi biofilm and it could potentially involved in drug resistance, and offer a promising avenue for developing a new antibiofilm therapeutic target to conquer the big obstacle of drug resistance. The obtained information can be instrumental in designing novel therapeutic molecules in the future to combat typhoidal biofilm conditions effectively for overcoming antibiotic resistance against bacterial infection Salmonella.
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Affiliation(s)
- Aditya Upadhyay
- Department of Biotechnology, National Institute of Technology, Raipur, 492010, CG, India
| | - Dharm Pal
- Department of Chemical Engineering, National Institute of Technology, Raipur, 492010, CG, India.
| | - Awanish Kumar
- Department of Biotechnology, National Institute of Technology, Raipur, 492010, CG, India.
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24
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Thirabowonkitphithan P, Žalnėravičius R, Shafaat A, Jakubauskas D, Neilands J, Laiwattanapaisal W, Ruzgas T. Electrogenicity of microbial biofilms of medically relevant microorganisms: potentiometric, amperometric and wireless detection. Biosens Bioelectron 2024; 246:115892. [PMID: 38056343 DOI: 10.1016/j.bios.2023.115892] [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: 10/23/2023] [Accepted: 11/27/2023] [Indexed: 12/08/2023]
Abstract
Since the progression of biofilm formation is related to the success of infection treatment, detecting microbial biofilms is of great interest. Biofilms of Gram-positive Staphylococcus aureus and Streptococcus gordonii bacteria, Gram-negative Pseudomonas aeruginosa and Escherichia coli bacteria, and Candida albicans yeast were examined using potentiometric, amperometric, and wireless readout modes in this study. As a biofilm formed, the open circuit potential (OCP) of biofilm hosting electrode (bioanode) became increasingly negative. Depending on the microorganism, the OCP ranged from -70 to -250 mV. The co-culture generated the most negative OCP (-300 mV vs Ag/AgCl), while the single-species biofilm formed by E. coli developed the least negative (-70 mV). The OCP of a fungal biofilm formed by C. albicans was -100 mV. The difference in electrode currents generated by biofilms was more pronounced. The current density of the S. aureus biofilm was 0.9‧10-7 A cm-2, while the value of the P. aeruginosa biofilm was 1.3‧10-6 A cm-2. Importantly, a biofilm formed by a co-culture of S. aureus and P. aeruginosa had a slightly higher negative OCP value and current density than the most electrogenic P. aeruginosa single-species biofilm. We present evidence that bacteria can share redox mediators found in multi-species biofilms. This synergy, enabling higher current and OCP values of multi-species biofilm hosting electrodes, could be beneficial for electrochemical detection of infectious biofilms in clinics. We demonstrate that the electrogenic biofilm can provide basis to construct novel wireless, chip-free, and battery-free biofilm detection method.
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Affiliation(s)
- Pannawich Thirabowonkitphithan
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, 205 06, Malmö, Sweden; Biofilms - Research Center for Biointerfaces, Malmö University, 205 06, Malmö, Sweden; Graduate Program in Clinical Biochemistry and Molecular Medicine, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Patumwan, Bangkok, 10330, Thailand
| | - Rokas Žalnėravičius
- Center for Physical Sciences and Technology, Department of Electrochemical Material Science, Sauletekio av. 3, LT-10257, Vilnius, Lithuania; Institute of Biochemistry, Life Sciences Centre, Vilnius University, Sauletekio av. 7, LT-10257, Vilnius, Lithuania.
| | - Atefeh Shafaat
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, 205 06, Malmö, Sweden; Biofilms - Research Center for Biointerfaces, Malmö University, 205 06, Malmö, Sweden
| | - Dainius Jakubauskas
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, 205 06, Malmö, Sweden; Biofilms - Research Center for Biointerfaces, Malmö University, 205 06, Malmö, Sweden
| | - Jessica Neilands
- Section for Oral Biology and Pathology, Faculty of Odontology, Malmö University, 205 06, Malmö, Sweden
| | - Wanida Laiwattanapaisal
- Centre of Excellence for Biosensors and Bioengineering (CEBB), Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, 10330, Thailand; Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Patumwan, Bangkok, 10330, Thailand.
| | - Tautgirdas Ruzgas
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, 205 06, Malmö, Sweden; Biofilms - Research Center for Biointerfaces, Malmö University, 205 06, Malmö, Sweden
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25
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Le KCM, Tran ATQ, Vu MP, Duong PVQ, Nguyen KT. Preventing Static Biofilm Formation of Staphylococcus aureus on Different Types of Surfaces Using Microbubbles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:1698-1706. [PMID: 38198688 DOI: 10.1021/acs.langmuir.3c02773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
Bacterial fouling and biofilm formation on surfaces have been ongoing problems in real life as well as in the medical field. Different approaches have been taken to tackle the issues, from costly surface modification to antibiotic-delivering strategies. In this study, we examined the potential of using stabilized microbubbles (MBs) to shield against bacterial adhesion. Three types of surfaces were tested: hydrophilic glass (hydrophilic surface), neutral hydrophobic polystyrene (PS)-coated surfaces, and negatively charged hydrophobic octadecyltrichlorosilane (OTS)-coated surfaces. By evaluating the colony-forming unit (CFU) values from each surface, MBs stabilized by 0.05 mM SDS were shown to only produce significant reduction of Staphylococcus aureus adhesion on PS surfaces, up to 60.29 and 82.32% compared to no-MB PS surfaces, and no-MB uncoated surfaces, correspondingly, due to the appropriate size, stability, and negative charges of the MB shielding layer. On the other hand, OTS coatings had an intrinsic antiadhesion effect (69.83% compared to uncoated surface), given that the negatively charged OTS-aqueous interface or surface porosity nature of the coating prohibited the attachment of MBs, leading to the elimination of the antifouling effect of MBs. Ultimately, MBs gave better shielding results than surface modification when compared to uncoated surfaces and hence can be applied more widely.
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Affiliation(s)
- Khoa C M Le
- School of Biotechnology, International University, Vietnam National University, Ho Chi Minh City 700000, Viet Nam
| | - Anh T Q Tran
- School of Biotechnology, International University, Vietnam National University, Ho Chi Minh City 700000, Viet Nam
| | - Mai P Vu
- School of Biotechnology, International University, Vietnam National University, Ho Chi Minh City 700000, Viet Nam
| | - Phuong V Q Duong
- School of Biotechnology, International University, Vietnam National University, Ho Chi Minh City 700000, Viet Nam
| | - Khoi T Nguyen
- School of Biotechnology, International University, Vietnam National University, Ho Chi Minh City 700000, Viet Nam
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26
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Vautrin N, Dahyot S, Leoz M, Caron F, Grand M, Feldmann A, Gravey F, Legris S, Ribet D, Alexandre K, Pestel-Caron M. Are Escherichia coli causing recurrent cystitis just ordinary Uropathogenic E. coli (UPEC) strains? BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.08.566351. [PMID: 37986820 PMCID: PMC10659292 DOI: 10.1101/2023.11.08.566351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Specific determinants associated with Uropathogenic Escherichia coli (UPEC) causing recurrent cystitis are still poorly characterized. The aims of this study were (i) to describe genomic and phenotypic traits associated with recurrence using a large collection of recurrent and paired sporadic UPEC isolates, and (ii) to explore within-host genomic adaptation associated with recurrence using series of 2 to 5 sequential UPEC isolates. Whole genome comparative analyses between 24 recurrent cystitis isolates (RCIs) and 24 phylogenetically paired sporadic cystitis isolates (SCIs) suggested a lower prevalence of putative mobile genetic elements (MGE) in RCIs, such as plasmids and prophages. The intra-patient evolution of the 24 RCI series over time was characterized by SNP occurrence in genes involved in metabolism or membrane transport, and by plasmid loss in 5 out of the 24 RCI series. Genomic evolution occurred early in the course of recurrence, suggesting rapid adaptation to strong selection pressure in the urinary tract. However, RCIs did not exhibit specific virulence factor determinants and could not be distinguished from SCIs by their fitness, biofilm formation, or ability to invade HTB-9 bladder epithelial cells. Taken together, these results suggest a rapid but not convergent adaptation of RCIs that involves both strain- and host-specific characteristics.
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Affiliation(s)
- Nicolas Vautrin
- Univ Rouen Normandie, Université de Caen Normandie, INSERM, Normandie Univ, DYNAMICURE UMR 1311, F-76000 Rouen, France
| | - Sandrine Dahyot
- Univ Rouen Normandie, Université de Caen Normandie, INSERM, Normandie Univ, DYNAMICURE UMR 1311, CHU Rouen, department of microbiology, F-76000 Rouen, France
| | - Marie Leoz
- Univ Rouen Normandie, Université de Caen Normandie, INSERM, Normandie Univ, DYNAMICURE UMR 1311, F-76000 Rouen, France
| | - François Caron
- Univ Rouen Normandie, Université de Caen Normandie, INSERM, Normandie Univ, DYNAMICURE UMR 1311, CHU Rouen, department of infectious diseases, F-76000 Rouen, France
| | - Maxime Grand
- Univ Rouen Normandie, Université de Caen Normandie, INSERM, Normandie Univ, DYNAMICURE UMR 1311, F-76000 Rouen, France
| | - Audrey Feldmann
- Univ Rouen Normandie, Université de Caen Normandie, INSERM, Normandie Univ, DYNAMICURE UMR 1311, F-76000 Rouen, France
| | - François Gravey
- Université de Caen Normandie, Univ Rouen Normandie, INSERM, Normandie Univ, DYNAMICURE UMR 1311, F-14000 Caen, France
| | - Stéphanie Legris
- Univ Rouen Normandie, Université de Caen Normandie, INSERM, Normandie Univ, DYNAMICURE UMR 1311, F-76000 Rouen, France
| | - David Ribet
- Univ Rouen Normandie, INSERM, Normandie Univ, ADEN UMR 1073, Nutrition, inflammation and microbiota-gut-brain axis, F-76000 Rouen, France
| | - Kévin Alexandre
- Univ Rouen Normandie, Université de Caen Normandie, INSERM, Normandie Univ, DYNAMICURE UMR 1311, CHU Rouen, department of infectious diseases, F-76000 Rouen, France
| | - Martine Pestel-Caron
- Univ Rouen Normandie, Université de Caen Normandie, INSERM, Normandie Univ, DYNAMICURE UMR 1311, CHU Rouen, department of microbiology, F-76000 Rouen, France
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27
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Mittal N, Tiwari N, Singh D, Tripathi P, Sharma S. Toxicological impacts of microplastics on human health: a bibliometric analysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-30801-4. [PMID: 37936032 DOI: 10.1007/s11356-023-30801-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Accepted: 10/27/2023] [Indexed: 11/09/2023]
Abstract
Plastic has been known as an artificial polymer whereas environmental microplastics become a global concern. Microplastics are reported to cause immunotoxicity in humans through gut deposition and entering the bloodstream. This study is a comprehensive indication of the recent research on microplastic toxicity in the gastrointestinal system. We performed bibliographic analysis using VOS viewer software and analyzed the data received on microplastics and their impact on gut health which has grown exponentially since 2016. Recent findings also support microplastic toxicity in combination with heavy metals. The smaller particle size and other factors enhanced the adsorption ability of environmental contamination such as heavy metals on microplastic which increased their bioaccumulation. Such toxic complexes of heavy metals and microplastics are a concern to natural ecosystems and environmental biologists. Few reports also demonstrated the biofilm formation on microplastic surfaces which might cause greater environmental as well as human health risks. Notably, terms of determining the microplastics in human tissues through several analytical techniques are still limited to some extent. Future research should be focused on the quantification of microplastics in human tissues, the combined effect of microplastics with other contaminants, and their effects on pre-existing diseases. This study boosts understanding of the potential impacts of microplastic and nanoplastic toxicity in the human gastrointestinal system.
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Affiliation(s)
- Nishu Mittal
- Faculty of Biosciences, Institute of Biosciences and Technology, Shri RamSwaroop Memorial University, Deva Road, Barabanki, Lucknow, Uttar Pradesh, 225003, India
| | - Neeraj Tiwari
- Faculty of Biosciences, Institute of Biosciences and Technology, Shri RamSwaroop Memorial University, Deva Road, Barabanki, Lucknow, Uttar Pradesh, 225003, India
| | - Dhananjay Singh
- Department of Biosciences, Integral University, Kursi Road, Lucknow, Uttar Pradesh, 226026, India
| | - Prabhanshu Tripathi
- Food Drug and Chemical Toxicology Division, CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, 226001, India
| | - Sapna Sharma
- Faculty of Biosciences, Institute of Biosciences and Technology, Shri RamSwaroop Memorial University, Deva Road, Barabanki, Lucknow, Uttar Pradesh, 225003, India.
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Rossato Viana A, Nicola I, Franco C, Caetano PA, Jacob-Lopes E, Zepka LQ, Santos D, Moraes Flores EM, Stefanello Vizzotto B, Wolf K, Ferreira Ourique A, Mortari SR, Bohn Rhoden CR, Fontanari Krause LM. Phytochemical characterization and toxicological activity attributed to the acetonic extract of South American Vassobia breviflora. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2023; 86:816-832. [PMID: 37667472 DOI: 10.1080/15287394.2023.2254316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/06/2023]
Abstract
The particular plant species found in southern Brazil, Vassobia breviflora (Solanaceae) has only a few apparent studies examining its biological effect. Thus, the aim of the present study was to determine the activity of the acetone extract fraction derived from V. breviflora. Four compounds were identified by ESI-qTOF-MS: eucalrobusone R, aplanoic acid B, pheophorbide A, and pheophytin A. In addition, 5 compounds were identified by HPLC-PDA-MS/MS: all-trans-lutein, 15-cis-lutein, all-trans-β-carotene, 5,8-epoxy-β-carotene, and cis-β-carotene. Cell lines A549 (lung cancer), A375 (melanoma cancer) and HeLa (cervical cancer) were incubated with different concentrations of each studied extract using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT), lactate dehydrogenase (LDH), and 2'-7'dichlorofluorescin diacetate (DCFH-DA) assays. The acetonic extract exhibited cytotoxic activity at a concentration of 0.03 mg/ml in the HeLa strain and 0.1 mg/ml in the others. In addition to increased production of reactive oxygen species (ROS). Antibacterial activity was assessed utilizing minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) in 9 ATCCs strains and 7 clinical isolates, as well as determination of biofilm production. Data demonstrated that MIC and MBC were approximately 256 mg/ml in most of the strains tested and antibiofilm effect at S. aureus, S. epidermidis, A. baumannii, and E. faecalis, concentrations below the MIC. Genotoxic activity on plasmid DNA did not produce significant elevated levels in breaks in the isolated genetic material.
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Affiliation(s)
- Altevir Rossato Viana
- Department of Biochemistry and Molecular Biology, Federal University of Santa Maria, Santa Maria, Brazil
| | | | - Camila Franco
- Biomedicine, Franciscan University, Santa Maria, Brazil
| | - Patrícia Acosta Caetano
- Department of Food Science and Technology, Federal University of Santa Maria, Santa Maria, Brazil
| | - Eduardo Jacob-Lopes
- Department of Food Science and Technology, Federal University of Santa Maria, Santa Maria, Brazil
| | - Leila Queiroz Zepka
- Department of Food Science and Technology, Federal University of Santa Maria, Santa Maria, Brazil
| | - Daniel Santos
- Department of Chemistry, Federal University of Santa Maria, Santa Maria, Brazil
| | | | | | - Katianne Wolf
- Laboratory of Nanotechnology, Franciscan University, Santa Maria, Brazil
| | | | | | - Cristiano Rodrigo Bohn Rhoden
- Laboratory of Nanotechnology, Franciscan University, Santa Maria, Brazil
- Laboratory of Nanoesctructurated Magnetic Materials - LaMMaN, Nanosciences Post-graduation Program, Franciscan University, Santa Maria, Brazil
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Myckatyn TM, Duran Ramirez JM, Walker JN, Hanson BM. Management of Biofilm with Breast Implant Surgery. Plast Reconstr Surg 2023; 152:919e-942e. [PMID: 37871028 DOI: 10.1097/prs.0000000000010791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
LEARNING OBJECTIVES After studying this article, the participant should be able to: 1. Understand how bacteria negatively impact aesthetic and reconstructive breast implants. 2. Understand how bacteria infect breast implants. 3. Understand the evidence associated with common implant infection-prevention strategies, and their limitations. 4. Understand why implementation of bacteria-mitigation strategies such as antibiotic administration or "no-touch" techniques may not indefinitely prevent breast implant infection. SUMMARY Bacterial infection of aesthetic and reconstructive breast implants is a common and expensive problem. Subacute infections or chronic capsular contractures leading to device explantation are the most commonly documented sequelae. Although bench and translational research underscores the complexities of implant-associated infection, high-quality studies with adequate power, control groups, and duration of follow-up are lacking. Common strategies to minimize infections use antibiotics-administered systemically, in the breast implant pocket, or by directly bathing the implant before insertion-to limit bacterial contamination. Limiting contact between the implant and skin or breast parenchyma represents an additional common strategy. The clinical prevention of breast implant infection is challenged by the clean-contaminated nature of breast parenchyma, and the variable behavior of not only specific bacterial species but also their strains. These factors impact bacterial virulence and antibiotic resistance.
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Affiliation(s)
- Terence M Myckatyn
- From the Division of Plastic and Reconstructive Surgery, Washington University in St. Louis School of Medicine
| | | | - Jennifer N Walker
- Department of Microbiology and Molecular Genetics
- Center for Infectious Diseases, Department of Epidemiology, School of Public Health, University of Texas Health Science Center at Houston
| | - Blake M Hanson
- Center for Antimicrobial Resistance and Microbial Genomics, McGovern Medical School
- Center for Infectious Diseases, Department of Epidemiology, School of Public Health, University of Texas Health Science Center at Houston
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Yi J, Sun Y, Zeng C, Kostoulias X, Qu Y. The Role of Biofilms in Contact Lens Associated Fungal Keratitis. Antibiotics (Basel) 2023; 12:1533. [PMID: 37887234 PMCID: PMC10604847 DOI: 10.3390/antibiotics12101533] [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: 09/14/2023] [Revised: 10/04/2023] [Accepted: 10/10/2023] [Indexed: 10/28/2023] Open
Abstract
Biofilm formation is an important microbial strategy for fungal pathogens, such as Fusarium, Aspergillus, and Candida, to establish keratitis in patients wearing soft contact lenses. Despite the well-documented 2006 outbreak of Fusarium keratitis that eventually led to the withdrawal of the Bausch & Lomb multipurpose lens care solution ReNu with MoistureLoc ("MoistureLoc") from the global market, contact lens care systems and solutions currently available on the market do not specifically target fungal biofilms. This is partially due to the lack of recognition and understanding of important roles that fungal biofilms play in contact lens associated fungal keratitis (CLAFK). This review aims to reemphasize the link between fungal biofilms and CLAFK, and deepen our comprehension of its importance in pathogenesis and persistence of this medical device-related infection.
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Affiliation(s)
- Jipan Yi
- Department of Optometry, Zhejiang Industry & Trade Vocational College, Wenzhou 325000, China; (J.Y.); (C.Z.)
| | - Yao Sun
- Monash Biomedicine Discovery Institute, Department of Microbiology, Monash University, Clayton, VIC 3800, Australia; (Y.S.); (X.K.)
| | - Chenghong Zeng
- Department of Optometry, Zhejiang Industry & Trade Vocational College, Wenzhou 325000, China; (J.Y.); (C.Z.)
| | - Xenia Kostoulias
- Monash Biomedicine Discovery Institute, Department of Microbiology, Monash University, Clayton, VIC 3800, Australia; (Y.S.); (X.K.)
- Department of Infectious Diseases, The Alfred Hospital and Monash University, Clayton, VIC 3000, Australia
| | - Yue Qu
- Monash Biomedicine Discovery Institute, Department of Microbiology, Monash University, Clayton, VIC 3800, Australia; (Y.S.); (X.K.)
- Department of Infectious Diseases, The Alfred Hospital and Monash University, Clayton, VIC 3000, Australia
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Maisat W, Yuki K. Volatile anesthetic isoflurane exposure facilitates Enterococcus biofilm infection. FASEB J 2023; 37:e23186. [PMID: 37665578 PMCID: PMC10495085 DOI: 10.1096/fj.202301128r] [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: 06/06/2023] [Revised: 08/21/2023] [Accepted: 08/24/2023] [Indexed: 09/05/2023]
Abstract
Enterococcus faecalis (E. faecalis) is one of the major pathogenic bacteria responsible for surgical site infections. Biofilm infections are major hospital-acquired infections. Previous studies suggested that ions could regulate biofilm formation in microbes. Volatile anesthetics, frequently administered in surgical setting, target ion channels. Here, we investigated the role of ion channels/transporters and volatile anesthetics in the biofilm formation by E. faecalis MMH594 strain and its ion transporter mutants. We found that a chloride transporter mutant significantly reduced biofilm formation compared to the parental strain. Downregulation of teichoic acid biosynthesis in the chloride transporter mutant impaired biofilm matrix formation and cellular adhesion, leading to mitigated biofilm formation. Among anesthetics, isoflurane exposure enhanced biofilm formation in vitro and in vivo. The upregulation of de novo purine biosynthesis pathway by isoflurane exposure potentially enhanced biofilm formation, an essential process for DNA, RNA, and ATP synthesis. We also demonstrated that isoflurane exposure to E. faecalis increased cyclic-di-AMP and extracellular DNA production, consistent with the increased purine biosynthesis. We further showed that isoflurane enhanced the enzymatic activity of phosphoribosyl pyrophosphate synthetase (PRPP-S). With the hypothesis that isoflurane directly bound to PRPP-S, we predicted isoflurane binding site on it using rigid docking. Our study provides a better understanding of the underlying mechanisms of E. faecalis biofilm formation and highlights the potential impact of an ion transporter and volatile anesthetic on this process. These findings may lead to the development of novel strategies for preventing E. faecalis biofilm formation and improving patient outcomes in clinical settings.
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Affiliation(s)
- Wiriya Maisat
- Department of Anesthesiology, Critical Care and Pain Medicine, Cardiac Anesthesia Division, Boston Children’s Hospital, Boston, MA, USA
- Department of Anaesthesia, Harvard Medical School, Boston, MA, USA
- Department of Immunology, Harvard Medical School, Boston, MA, USA
- Broad Institute of Harvard and MIT, Cambridge, MA, USA
- Department of Anesthesiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Koichi Yuki
- Department of Anesthesiology, Critical Care and Pain Medicine, Cardiac Anesthesia Division, Boston Children’s Hospital, Boston, MA, USA
- Department of Anaesthesia, Harvard Medical School, Boston, MA, USA
- Department of Immunology, Harvard Medical School, Boston, MA, USA
- Broad Institute of Harvard and MIT, Cambridge, MA, USA
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32
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Chavak Z, Mahdian N, Pakzad I, Soltani MR, Badakhsh B, Ghafourian S. In vitro anti-biofilm properties of the peel of fruite wall of acorn against Streptococcus mutans. GMS HYGIENE AND INFECTION CONTROL 2023; 18:Doc23. [PMID: 37829251 PMCID: PMC10566014 DOI: 10.3205/dgkh000449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
Dental caries is a multi-factorial infectious disease. The primary cause is dental plaque, a complex of biofilm. It was postulated that the ethanolic extract of fruite wall of acorn may represent a new substance to prevent caries. Hence, the study was performed to evaluate the effect of ethanolic extract of fruite wall of acorn against biofilm formation by Streptococcus mutans, which is associated with dental plaque. The cytotoxicity of the ethanolic extract was determined against Vero cells resulting in an inhibitory concentration of 50 (IC50) of 55 µg/ml. After bacterial collection, different concentrations under the IC50 from the extract were evaluated against biofilm formation of S. mutans. 3 µg/ml of the extract inhibited the biofilm formation of S. mutans, and 1 to 3 µg/ml caused a decrease in gtfB and brpA biofilm-production genes. This study showed the potency of the ethanolic extract of fruite wall of acorn against biofilm formation by S. mutans.
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Affiliation(s)
- Zahra Chavak
- Department of Microbiology, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran
| | - Nahid Mahdian
- Department of Microbiology, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran
| | - Iraj Pakzad
- Department of Microbiology, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran
| | - Mohammad Reza Soltani
- Department of Operative Dentistry, School of Dentistry, Ilam University of Medical of Sciences, Ilam, Iran
| | - Behzad Badakhsh
- Department of Gastroenterology, Faculty of Medicine, IlamUniversity of Medical Sciences, Ilam, Iran
| | - Sobhan Ghafourian
- Department of Microbiology, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran
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Moiketsi BN, Makale KPP, Rantong G, Rahube TO, Makhzoum A. Potential of Selected African Medicinal Plants as Alternative Therapeutics against Multi-Drug-Resistant Bacteria. Biomedicines 2023; 11:2605. [PMID: 37892979 PMCID: PMC10604549 DOI: 10.3390/biomedicines11102605] [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: 05/30/2023] [Revised: 09/04/2023] [Accepted: 09/18/2023] [Indexed: 10/29/2023] Open
Abstract
Antimicrobial resistance is considered a "One-Health" problem, impacting humans, animals, and the environment. The problem of the rapid development and spread of bacteria resistant to multiple antibiotics is a rising global health threat affecting both rich and poor nations. Low- and middle-income countries are at highest risk, in part due to the lack of innovative research on the surveillance and discovery of novel therapeutic options. Fast and effective drug discovery is crucial towards combatting antimicrobial resistance and reducing the burden of infectious diseases. African medicinal plants have been used for millennia in folk medicine to cure many diseases and ailments. Over 10% of the Southern African vegetation is applied in traditional medicine, with over 15 species being partially or fully commercialized. These include the genera Euclea, Ficus, Aloe, Lippia. And Artemisia, amongst many others. Bioactive compounds from indigenous medicinal plants, alone or in combination with existing antimicrobials, offer promising solutions towards overcoming multi-drug resistance. Secondary metabolites have different mechanisms and modes of action against bacteria, such as the inhibition and disruption of cell wall synthesis; inhibition of DNA replication and ATP synthesis; inhibition of quorum sensing; inhibition of AHL or oligopeptide signal generation, broadcasting, and reception; inhibition of the formation of biofilm; disruption of pathogenicity activities; and generation of reactive oxygen species. The aim of this review is to highlight some promising traditional medicinal plants found in Africa and provide insights into their secondary metabolites as alternative options in antibiotic therapy against multi-drug-resistant bacteria. Additionally, synergism between plant secondary metabolites and antibiotics has been discussed.
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Affiliation(s)
| | | | | | - Teddie O. Rahube
- Department of Biological Sciences and Biotechnology, Faculty of Science, Botswana International University of Science and Technology (BIUST), Private Bag 16, Palapye, Botswana; (B.N.M.); (K.P.P.M.); (G.R.)
| | - Abdullah Makhzoum
- Department of Biological Sciences and Biotechnology, Faculty of Science, Botswana International University of Science and Technology (BIUST), Private Bag 16, Palapye, Botswana; (B.N.M.); (K.P.P.M.); (G.R.)
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Yan Z, Wang Y, Zeng W, Xia R, Liu Y, Wu Z, Deng W, Zhu M, Xu J, Deng H, Miao Y. Microbiota of long-term indwelling hemodialysis catheters during renal transplantation perioperative period: a cross-sectional metagenomic microbial community analysis. Ren Fail 2023; 45:2256421. [PMID: 37724520 PMCID: PMC10512886 DOI: 10.1080/0886022x.2023.2256421] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 09/02/2023] [Indexed: 09/21/2023] Open
Abstract
Background: Catheter-related infection (CRI) is a major complication in patients undergoing hemodialysis. The lack of high-throughput research on catheter-related microbiota makes it difficult to predict the occurrence of CRI. Thus, this study aimed to delineate the microbial structure and diversity landscape of hemodialysis catheter tips among patients during the perioperative period of kidney transplantation (KTx) and provide insights into predicting the occurrence of CRI.Methods: Forty patients at the Department of Transplantation undergoing hemodialysis catheter removal were prospectively included. Samples, including catheter tip, catheter outlet skin swab, catheter blood, peripheral blood, oropharynx swab, and midstream urine, from the separate pre- and post-KTx groups were collected and analyzed using metagenomic next-generation sequencing (mNGS). All the catheter tips and blood samples were cultured conventionally.Results: The positive detection rates for bacteria using mNGS and traditional culture were 97.09% (200/206) and 2.65% (3/113), respectively. Low antibiotic-sensitivity biofilms with colonized bacteria were detected at the catheter tip. In asymptomatic patients, no statistically significant difference was observed in the catheter tip microbial composition and diversity between the pre- and post-KTx group. The catheter tip microbial composition and diversity were associated with fasting blood glucose levels. Microorganisms at the catheter tip most likely originated from catheter outlet skin and peripheral blood.Conclusions: The long-term colonization microbiota at the catheter tip is in a relatively stable state and is not readily influenced by KTx. It does not act as the source of infection in all CRIs, but could reflect hematogenous infection to some extent.
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Affiliation(s)
- Ziyan Yan
- Department of General Surgery & Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, The First School of Clinical Medicine, Southern Medical University, Guangzhou, P.R. China
| | - Yuchen Wang
- Department of Transplantation, Nanfang Hospital, Southern Medical Univerisity, Guangzhou, P.R. China
| | - Wenli Zeng
- Department of Transplantation, Nanfang Hospital, Southern Medical Univerisity, Guangzhou, P.R. China
| | - Renfei Xia
- Department of Transplantation, Nanfang Hospital, Southern Medical Univerisity, Guangzhou, P.R. China
| | - Yanna Liu
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, P.R. China
| | - Zhouting Wu
- Department of Transplantation, Nanfang Hospital, Southern Medical Univerisity, Guangzhou, P.R. China
| | - Wenfeng Deng
- Department of Transplantation, Nanfang Hospital, Southern Medical Univerisity, Guangzhou, P.R. China
| | - Miao Zhu
- Department of Bioinformatics and System Development, Dinfectome Inc, Nanjing, P.R. China
| | - Jian Xu
- Department of Transplantation, Nanfang Hospital, Southern Medical Univerisity, Guangzhou, P.R. China
| | - Haijun Deng
- Department of General Surgery & Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, The First School of Clinical Medicine, Southern Medical University, Guangzhou, P.R. China
| | - Yun Miao
- Department of Transplantation, Nanfang Hospital, Southern Medical Univerisity, Guangzhou, P.R. China
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Jimoh AA, Booysen E, van Zyl L, Trindade M. Do biosurfactants as anti-biofilm agents have a future in industrial water systems? Front Bioeng Biotechnol 2023; 11:1244595. [PMID: 37781531 PMCID: PMC10540235 DOI: 10.3389/fbioe.2023.1244595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 09/04/2023] [Indexed: 10/03/2023] Open
Abstract
Biofilms are bacterial communities embedded in exopolymeric substances that form on the surfaces of both man-made and natural structures. Biofilm formation in industrial water systems such as cooling towers results in biofouling and biocorrosion and poses a major health concern as well as an economic burden. Traditionally, biofilms in industrial water systems are treated with alternating doses of oxidizing and non-oxidizing biocides, but as resistance increases, higher biocide concentrations are needed. Using chemically synthesized surfactants in combination with biocides is also not a new idea; however, these surfactants are often not biodegradable and lead to accumulation in natural water reservoirs. Biosurfactants have become an essential bioeconomy product for diverse applications; however, reports of their use in combating biofilm-related problems in water management systems is limited to only a few studies. Biosurfactants are powerful anti-biofilm agents and can act as biocides as well as biodispersants. In laboratory settings, the efficacy of biosurfactants as anti-biofilm agents can range between 26% and 99.8%. For example, long-chain rhamnolipids isolated from Burkholderia thailandensis inhibit biofilm formation between 50% and 90%, while a lipopeptide biosurfactant from Bacillus amyloliquefaciens was able to inhibit biofilms up to 96% and 99%. Additionally, biosurfactants can disperse preformed biofilms up to 95.9%. The efficacy of antibiotics can also be increased by between 25% and 50% when combined with biosurfactants, as seen for the V9T14 biosurfactant co-formulated with ampicillin, cefazolin, and tobramycin. In this review, we discuss how biofilms are formed and if biosurfactants, as anti-biofilm agents, have a future in industrial water systems. We then summarize the reported mode of action for biosurfactant molecules and their functionality as biofilm dispersal agents. Finally, we highlight the application of biosurfactants in industrial water systems as anti-fouling and anti-corrosion agents.
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Affiliation(s)
| | | | | | - Marla Trindade
- Department of Biotechnology, Institute for Microbial Biotechnology and Metagenomics (IMBM), University of the Western Cape, Cape Town, South Africa
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Palanisamy V, Bosilevac JM, Barkhouse DA, Velez SE, Chitlapilly Dass S. Shotgun-metagenomics reveals a highly diverse and communal microbial network present in the drains of three beef-processing plants. Front Cell Infect Microbiol 2023; 13:1240138. [PMID: 37743870 PMCID: PMC10515220 DOI: 10.3389/fcimb.2023.1240138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 08/08/2023] [Indexed: 09/26/2023] Open
Abstract
Background Multi-species biofilms pose a problem in various environments, especially food-processing environments. The diversity of microorganisms in these biofilms plays a critical role in their integrity and protection against external biotic and abiotic factors. Compared to single-species biofilms, mixed-species biofilms are more resistant to various stresses, including antimicrobials like sanitizers. Therefore, understanding the microbiome composition and diversity in biofilms and their metabolic potential is a priority when developing intervention techniques to combat foodborne pathogens in food processing environments. Methods This study aimed to describe and compare the microbiome profile of 75 drain biofilm samples obtained from five different locations (Hotscale, Hotbox, Cooler, Processing, & Grind room) of three beef-processing plants (Plant A, B & C) taken over two timepoints 2017-18 (T1) and 2021 (T2) by shotgun sequencing. Results Core microbiome analysis found Pseudomonas, Psychrobacter, and Acinetobacter to be the top three prevalent genera among the plants and locations. Alpha diversity analysis demonstrated a high diversity of microbiome present in all the plants and locations across the time points. Functional analysis showed the high metabolic potential of the microbial community with abundance of genes in metabolism, cell-adhesion, motility, and quorum sensing. Moreover, Quaternary Ammonium Compound (QAC) resistance genes were also observed, this is significant as QAC sanitizers are commonly used in many food processing facilities. Multi-functional genes such as transposases, polymerases, permeases, flagellar proteins, and Mobile Genetic Elements (MGEs) were found suggesting these are dynamic microbial communities that work together to protect themselves against environmental stresses through multiple defense mechanisms. Conclusion This study provides a framework for understanding the collective microbial network spanning a beef processing system. The results can be used to develop intervention strategies to best control these highly communicative microbial networks.
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Affiliation(s)
- Vignesh Palanisamy
- Department of Animal Science, Texas A&M University, College Station, TX, United States
| | - Joseph M. Bosilevac
- U. S. Department of Agriculture, Roman L. Hruska U.S. Meat Animal Research Center, Clay Center, Lincoln, NE, United States
| | - Darryll A. Barkhouse
- Molecular Center of Excellence, Invisible Sentinel, bioMerieux Inc., Philadelphia, PA, United States
| | - Sarah E. Velez
- Molecular Center of Excellence, Invisible Sentinel, bioMerieux Inc., Philadelphia, PA, United States
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Saha P, Rafe MR. Cyclodextrin: A prospective nanocarrier for the delivery of antibacterial agents against bacteria that are resistant to antibiotics. Heliyon 2023; 9:e19287. [PMID: 37662769 PMCID: PMC10472013 DOI: 10.1016/j.heliyon.2023.e19287] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 08/02/2023] [Accepted: 08/17/2023] [Indexed: 09/05/2023] Open
Abstract
Supramolecular chemistry introduces us to the macrocyclic host cyclodextrin, which has a hydrophobic cavity. The hydrophobic cavity has a higher affinity for hydrophobic guest molecules and forms host-guest complexation with non-covalent interaction. Three significant cyclodextrin kinds are α-cyclodextrin, β-cyclodextrin, and γ-cyclodextrin. The most often utilized is β-cyclodextrin (β-CD). An effective weapon against bacteria that are resistant to antibiotics is cyclodextrin. Several different kinds of cyclodextrin nanocarriers (β-CD, HP-β-CD, Meth-β-CD, cationic CD, sugar-grafted CD) are utilized to enhance the solubility, stability, dissolution, absorption, bioavailability, and permeability of the antibiotics. Cyclodextrin also improves the effectiveness of antibiotics, antimicrobial peptides, metallic nanoparticles, and photodynamic therapy (PDT). Again, cyclodextrin nanocarriers offer slow-release properties for sustained-release formulations where steady-state plasma antibiotic concentration is needed for an extended time. A novel strategy to combat bacterial resistance is a stimulus (pH, ROS)-responsive antibiotics released from cyclodextrin carrier. Once again, cyclodextrin traps autoinducer (AI), a crucial part of bacterial quorum sensing, and reduces virulence factors, including biofilm formation. Cyclodextrin helps to minimize MIC in particular bacterial strains, keep antibiotic concentrations above MIC in the infection site and minimize the possibility of antibiotic and biofilm resistance. Sessile bacteria trapped in biofilms are more resistant to antibiotic therapy than bacteria in a planktonic form. Cyclodextrin also involves delivering antibiotics to biofilm and resistant bacteria to combat bacterial resistance.
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Affiliation(s)
- Pranoy Saha
- Department of Pharmacy, Jagannath University, Dhaka, 1100, Bangladesh
| | - Md Rajdoula Rafe
- Department of Pharmacy, Jagannath University, Dhaka, 1100, Bangladesh
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Enriquez KT, Plummer WD, Neufer PD, Chazin WJ, Dupont WD, Skaar EP. Temporal modelling of the biofilm lifecycle (TMBL) establishes kinetic analysis of plate-based bacterial biofilm dynamics. J Microbiol Methods 2023; 212:106808. [PMID: 37595876 PMCID: PMC10528067 DOI: 10.1016/j.mimet.2023.106808] [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: 06/30/2023] [Revised: 08/12/2023] [Accepted: 08/12/2023] [Indexed: 08/20/2023]
Abstract
Bacterial biofilms are critical to pathogenesis and infection. They are associated with rising rates of antimicrobial resistance. Biofilms are correlated with worse clinical outcomes, making them important to infectious diseases research. There is a gap in knowledge surrounding biofilm kinetics and dynamics which makes biofilm research difficult to translate from bench to bedside. To address this gap, this work employs a well-characterized crystal violet biomass accrual and planktonic cell density assay across a clinically relevant time course and expands statistical analysis to include kinetic information in a protocol termed the TMBL (Temporal Mapping of the Biofilm Lifecycle) assay. TMBL's statistical framework quantitatively compares biofilm communities across time, species, and media conditions in a 96-well format. Measurements from TMBL can reliably be condensed into response features that inform the time-dependent behavior of adherent biomass and planktonic cell populations. Staphylococcus aureus and Pseudomonas aeruginosa biofilms were grown in conditions of metal starvation in nutrient-variable media to demonstrate the rigor and translational potential of this strategy. Significant differences in single-species biofilm formation are seen in metal-deplete conditions as compared to their controls which is consistent with the consensus literature on nutritional immunity that metal availability drives transcriptomic and metabolomic changes in numerous pathogens. Taken together, these results suggest that kinetic analysis of biofilm by TMBL represents a statistically and biologically rigorous approach to studying the biofilm lifecycle as a time-dependent process. In addition to current methods to study the impact of microbe and environmental factors on the biofilm lifecycle, this kinetic assay can inform biological discovery in biofilm formation and maintenance.
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Affiliation(s)
- Kyle T Enriquez
- Vanderbilt University Medical Scientist Training Program, Vanderbilt University School of Medicine, Nashville, TN, United States of America; Department of Pathology, Microbiology, and Immunology, Vanderbilt University, Nashville, TN, United States of America; Vanderbilt Institute for Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, TN, United States of America
| | - W Dale Plummer
- Department of Biostatistics, Vanderbilt University, Nashville, TN, United States of America
| | - Preston D Neufer
- Department of Chemistry, Vanderbilt University, Nashville, TN, United States of America; Department of Biochemistry, Vanderbilt University, Nashville, TN, United States of America
| | - Walter J Chazin
- Vanderbilt Institute for Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, TN, United States of America; Department of Chemistry, Vanderbilt University, Nashville, TN, United States of America; Department of Biochemistry, Vanderbilt University, Nashville, TN, United States of America
| | - William D Dupont
- Department of Biostatistics, Vanderbilt University, Nashville, TN, United States of America
| | - Eric P Skaar
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University, Nashville, TN, United States of America; Vanderbilt Institute for Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, TN, United States of America.
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Qumar S, Majid M, Qaria MA, Mendem SK, Ahmed N. Functional molecular characterization and the assessment of the transmission route of multidrug-resistant Helicobacter pullorum isolates from free-range and broiler chickens. Microb Pathog 2023; 182:106253. [PMID: 37463609 DOI: 10.1016/j.micpath.2023.106253] [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: 06/05/2023] [Revised: 07/12/2023] [Accepted: 07/13/2023] [Indexed: 07/20/2023]
Abstract
BACKGROUND Some of the life-threatening, food-borne, and zoonotic infections are transmitted through poultry birds. Inappropriate and irrational use of antimicrobials in the livestock industry has resulted in an increased incidence of multi-drug resistant bacteria of epidemic potentials. MATERIALS AND METHODS The adhesion and invasion properties of 11 free-range and broiler chicken derived Helicobacterpullorum isolates were evaluated. To examine the biofilm formation of H. pullorum isolates, crystal violet assay was performed. A quantitative assay of invasion-associated genes was carried out after infecting HepG2 cells with two different representative (broiler and free-range chicken) H. pullorum isolates, using RT-PCR assay. Furthermore, we investigated the prevalence of H. pullorum, Campylobacter jejuni and Salmonella spp. in chicken caeca and oviducts to determine the possibility of trans-ovarian transmission. RESULTS All H. pullorum isolates adhered to HepG2 cells significantly but a notable difference towards their invasion potential was observed between free-range and broiler chicken isolates wherein broiler isolates were found to be more invasive compared to free-range isolates. Furthermore, cdtB, flhA and flaB genes of H. pullorum were upregulated post infection of HepG2 cells, in broiler chicken isolates compared to free-range chicken isolates. Moreover, all isolates of H. pullorum were found to form biofilm on the liquid-air interface of the glass coverslips and sidewalls of the wells with similar propensities. Despite presence of H. pullorum and C. jejuni in high concentrations in the caecum, they were completely absent in oviduct samples, thus ruling out the possibility of vertical transmission of these bacterial species. In contrast, Salmonella spp. was found to be present in a significant proportion in the oviduct samples of egg-laying hens suggesting its vertical transmission. CONCLUSIONS Our findings suggest that H. pullorum, an emerging multi-drug resistant (MDR) pathogen could be transmitted from poultry sources to humans. In addition to this, its strong functional similarity with C. jejuni provides a firm basis for H. pullorum to be an emerging food-associated, MDR pathogenic bacterium that could pose risk to public health.
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Affiliation(s)
- Shamsul Qumar
- Pathogen Biology Laboratory, Department of Biotechnology and Bioinformatics, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, 500046, India; GeneStore India Pvt. Ltd, Sector 14, Gurugram, Haryana, 122001, India.
| | - Mohammad Majid
- Pathogen Biology Laboratory, Department of Biotechnology and Bioinformatics, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, 500046, India; Central Food Laboratory, Ministry of Public Health, Doha, Qatar
| | - Majjid A Qaria
- Pathogen Biology Laboratory, Department of Biotechnology and Bioinformatics, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, 500046, India
| | - Suresh Kumar Mendem
- Pathogen Biology Laboratory, Department of Biotechnology and Bioinformatics, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, 500046, India
| | - Niyaz Ahmed
- Pathogen Biology Laboratory, Department of Biotechnology and Bioinformatics, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, 500046, India.
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Friberg M, Woeller K, Iberi V, Mancheno PP, Riedeman J, Bohman L, Davis CC. Development of in vitro methods to model the impact of vaginal lactobacilli on Staphylococcus aureus biofilm formation on menstrual cups as well as validation of recommended cleaning directions. FRONTIERS IN REPRODUCTIVE HEALTH 2023; 5:1162746. [PMID: 37671283 PMCID: PMC10475951 DOI: 10.3389/frph.2023.1162746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 07/25/2023] [Indexed: 09/07/2023] Open
Abstract
Introduction Menstrual cups (MC) are a reusable feminine hygiene product. A recent publication suggested that Staphylococcus aureus (S. aureus) biofilms can form on MCs which may lead to increased risk of menstrual Toxic Shock Syndrome (mTSS). Additionally, there is concern that buildup of residual menses may contribute to microbial growth and biofilm formation further increasing mTSS risk. Quantitative and qualitative analysis of in vitro tests were utilized to determine if S. aureus biofilm could form on MC in the presence of the keystone species Lactobacillus after 12 h of incubation. The methodology was based on a modification of an anaerobic in vitro method that harnesses the keystone species hypothesis by including a representative of vaginal lactic acid bacteria. Methods MCs were incubated anaerobically for 12 h in Vaginal Defined Media (VDM) with the two morphologically distinct bacteria, Lactobacillus gasseri (L. gasseri) and S. aureus. Colony Forming Units (CFU) for each organism from the VDM broth and sonicated MC were estimated. In addition, a separate experiment was conducted where S. aureus was grown for 12 h in the absence of L. gasseri. Qualitative analysis for biofilm formation utilized micro-CT (µ-CT) and cryogenic scanning electron microscopy (Cryo-SEM). Results Samples collected from the media control had expected growth of both organisms after 12 h of incubation. Samples collected from VDM broth were similar to media control at the end of the 12-h study. Total S. aureus cell density on MC following sonication/rinsing was minimal. Results when using a monoculture of S. aureus demonstrated that there was a significant growth of the organism in the media control and broth as well as the sonicated cups indicating that the presence of L. gasseri was important for controlling growth and adherence of S. aureus. Few rod-shaped bacteria (L. gasseri) and cocci (S. aureus) could be identified on the MCs when grown in a dual species culture inoculum and no biofilm was noted via µ-CT and cryo-SEM. Additionally, efforts to model and understand the validity of the current labeled recommendations for MC cleaning in-between uses are supported. Discussion The data support continued safe use of the Tampax® cup when used and maintained as recommended.
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Affiliation(s)
- Maria Friberg
- Baby, Feminine and Family Care Microbiology, The Procter & Gamble Company, Mason, OH, United States
| | - Kara Woeller
- Baby, Feminine and Family Care, Global Product Stewardship, The Procter & Gamble Company, Cincinnati, OH, United States
| | - Vighter Iberi
- Corporate Functions Analytical, The Procter & Gamble Company, Mason, OH, United States
| | | | - James Riedeman
- Baby, Family and Feminine Care Analytical Chemistry, The Procter & Gamble Company, Cincinnati, OH, United States
| | - Lisa Bohman
- Data Modeling and Sciences, The Procter & Gamble Company, Mason, OH, United States
| | - Catherine C. Davis
- Department of Medical Microbiology and Immunology, School of Medicine, Creighton University, Omaha, NE, United States
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Savargaonkar AV, Munshi AH, Soares P, Popat KC. Antifouling Behavior of Copper-Modified Titania Nanotube Surfaces. J Funct Biomater 2023; 14:413. [PMID: 37623658 PMCID: PMC10455356 DOI: 10.3390/jfb14080413] [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: 06/29/2023] [Revised: 07/28/2023] [Accepted: 08/01/2023] [Indexed: 08/26/2023] Open
Abstract
Titanium and its alloys are commonly used to fabricate orthopedic implants due to their excellent mechanical properties, corrosion resistance, and biocompatibility. In recent years, orthopedic implant surgeries have considerably increased. This has also resulted in an increase in infection-associated revision surgeries for these implants. To combat this, various approaches are being investigated in the literature. One of the approaches is modifying the surface topography of implants and creating surfaces that are not only antifouling but also encourage osteointegration. Titania nanotube surfaces have demonstrated a moderate decrease in bacterial adhesion while encouraging mesenchymal stem cell adhesion, proliferation, and differentiation, and hence were used in this study. In this work, titania nanotube surfaces were fabricated using a simple anodization technique. These surfaces were further modified with copper using a physical vapor deposition technique, since copper is known to be potent against bacteria once in contact. In this study, scanning electron microscopy was used to evaluate surface topography; energy-dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy were used to evaluate surface chemistry; contact angle goniometry was used to evaluate surface wettability; and X-ray diffraction was used to evaluate surface crystallinity. Antifouling behavior against a gram-positive and a gram-negative bacterium was also investigated. The results indicate that copper-modified titania nanotube surfaces display enhanced antifouling behavior when compared to other surfaces, and this may be a potential way to prevent infection in orthopedic implants.
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Affiliation(s)
- Aniruddha Vijay Savargaonkar
- Department of Mechanical Engineering, Colorado State University, Fort Collins, CO 80523, USA; (A.V.S.); (A.H.M.)
| | - Amit H. Munshi
- Department of Mechanical Engineering, Colorado State University, Fort Collins, CO 80523, USA; (A.V.S.); (A.H.M.)
| | - Paulo Soares
- Department of Mechanical Engineering, Pontifícia Universidade Católica do Paraná, Curitiba 80215-901, PR, Brazil;
| | - Ketul C. Popat
- Department of Mechanical Engineering, Colorado State University, Fort Collins, CO 80523, USA; (A.V.S.); (A.H.M.)
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA
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Agrawal A, Sharma R, Sharma A, Gurjar KC, Kumar S, Chatterjee S, Pandey H, Awasthi K, Awasthi A. Antibacterial and antibiofilm efficacy of green synthesized ZnO nanoparticles using Saraca asoca leaves. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:86328-86337. [PMID: 37402918 DOI: 10.1007/s11356-023-28524-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Accepted: 06/27/2023] [Indexed: 07/06/2023]
Abstract
Biofilms are made up of bacterial colonies and their extracellular polymeric substances (EPS) matrix, which protects the bacteria from adverse environmental conditions. The increasing drug resistivity of pathogenic bacteria is becoming an emergency for developing new antibacterial agents. In this study, we have synthesized the zinc oxide nanoparticles (ZnO NPs) using the leaf extract of Saraca asoca plant, and the antibacterial and antibiofilm activity of green synthesized ZnO NPs was measured against the biofilm-producing bacteria Bacillus subtilis. The disk diffusion data reveals that the zone of inhibition (ZOI) starts at a concentration of 0.5 mg/mL and minimum inhibition concentration (100 µg/mL) and minimum bactericidal concentration (150 µg/mL) values were also evaluated for green synthesized ZnO nanomaterials. Crystal violet test and microscopic examination were used to assess the impact of produced nanoparticles on biofilm development. The findings indicated a nearly 45%, 64%, and 83% suppression of biofilm development at 0.5 × MIC, 0.75 × MIC, and 1 × MIC value, respectively. The biofilm biomass of the preformed or matured biofilms by the ZnO NPs was evaluated to be 68%, 50%, and 33% at concentrations of 0.5 × MIC, 0.75 × MIC, and 1 × MIC which was concentration-dependent. Moreover, flow cytometry results suggest damage to the bacterial cell membrane. The data indicated that the proportion of dead cells increased with NP concentration in comparison to the control. Therefore, it can be concluded that the green synthetic ZnO nanoparticles showed excellent antibacterial and antibiofilm activity against the Bacillus subtilis bacteria that produce biofilms and that they could be a promising substitute agent for the treatment of biofilms and drug-resistant bacteria.
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Affiliation(s)
- Ankush Agrawal
- Department of Zoology, University of Rajasthan, Jaipur, 302004, India
| | - Ruhani Sharma
- Department of Zoology, University of Rajasthan, Jaipur, 302004, India
- Department of Life Sciences, Vivekananda Global University, Jaipur, 303012, India
| | - Ankita Sharma
- Department of Zoology, University of Rajasthan, Jaipur, 302004, India
| | | | - Sanjay Kumar
- Department of Physics, Malaviya National Institute of Technology, Jaipur, 302017, India
| | - Samit Chatterjee
- Department of Zoology, University of Rajasthan, Jaipur, 302004, India
| | - Harsh Pandey
- Department of Chemical Engineering, Manipal University, Jaipur, 303007, India
| | - Kamlendra Awasthi
- Department of Physics, Malaviya National Institute of Technology, Jaipur, 302017, India
| | - Anjali Awasthi
- Department of Zoology, University of Rajasthan, Jaipur, 302004, India.
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Tran NN, Morrisette T, Jorgensen SCJ, Orench-Benvenutti JM, Kebriaei R. Current therapies and challenges for the treatment of Staphylococcus aureus biofilm-related infections. Pharmacotherapy 2023; 43:816-832. [PMID: 37133439 DOI: 10.1002/phar.2806] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 03/10/2023] [Accepted: 03/16/2023] [Indexed: 05/04/2023]
Abstract
Staphylococcus aureus is a major cause of nosocomial and community-acquired infections and contributes to significant increase in morbidity and mortality especially when associated with medical devices and in biofilm form. Biofilm structure provides a pathway for the enrichment of resistant and persistent phenotypes of S. aureus leading to relapse and recurrence of infection. Minimal diffusion of antibiotics inside biofilm structure leads to heterogeneity and distinct physiological activity. Additionally, horizontal gene transfer between cells in proximity adds to the challenges associated with eradication of biofilms. This narrative review focuses on biofilm-associated infections caused by S. aureus, the impact of environmental conditions on biofilm formation, interactions inside biofilm communities, and the clinical challenges that they present. Conclusively, potential solutions, novel treatment strategies, combination therapies, and reported alternatives are discussed.
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Affiliation(s)
- Nikki N Tran
- Department of Pharmacy, The Ohio State University Wexner Medical Center - The James Cancer Hospital and Solove Research Institute, Columbus, Ohio, USA
| | - Taylor Morrisette
- Department of Clinical Pharmacy and Outcomes Sciences, Medical University of South Carolina College of Pharmacy, Charleston, South Carolina, USA
- Department of Pharmacy Services, Medical University of South Carolina Shawn Jenkins Children's Hospital, Charleston, South Carolina, USA
| | - Sarah C J Jorgensen
- Institute of Medical Science, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - José M Orench-Benvenutti
- P3 Research Laboratory, Division of Outcomes and Translational Sciences, College of Pharmacy, The Ohio State University, Columbus, Ohio, USA
| | - Razieh Kebriaei
- P3 Research Laboratory, Division of Outcomes and Translational Sciences, College of Pharmacy, The Ohio State University, Columbus, Ohio, USA
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Lianou DT, Michael CK, Solomakos N, Vasileiou NGC, Petinaki E, Mavrogianni VS, Tzora A, Voidarou C, Fthenakis GC. Isolation of Biofilm-Forming Staphylococci from the Bulk-Tank Milk of Small Ruminant Farms in Greece. Foods 2023; 12:2836. [PMID: 37569105 PMCID: PMC10417191 DOI: 10.3390/foods12152836] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 07/21/2023] [Accepted: 07/24/2023] [Indexed: 08/13/2023] Open
Abstract
The objectives of this study were (i) to describe staphylococcal isolates recovered from bulk-tank raw milk collected from sheep and goat farms during a countrywide study performed in Greece, (ii) to study management factors potentially associated with their presence in bulk-tank milk and (iii) to provide evidence regarding their association with the quality of the milk. In total, 312 staphylococcal isolates, recovered from samples of bulk-tank raw milk from 444 small ruminant farms in Greece, were evaluated in this work. The in vitro formation of biofilm by the isolates was tested by combining the findings of (a) culture appearance on Congo Red agar plates and (b) results of a microplate adhesion test. The most frequently identified species was Staphylococcus aureus (75 isolates); other frequently recovered species were S. simulans (44 isolates), S. equorum (34 isolates) and S. haemolyticus (26 isolates); in total, 23 species were identified. In total, 224 (71.8%) isolates were biofilm-forming and were recovered from the bulk-tank milk samples of 148 sheep flocks (45.5%) and 55 goat herds (46.2%). There was evidence of seasonality in the isolation of staphylococci: during spring, mostly biofilm-forming isolates were recovered, whilst during summer, mostly non-biofilm-forming isolates were recovered. Among farms applying machine-milking, the proportion of farms from which biofilm-forming isolates were recovered was higher where water with temperature < 50 °C or ≥90 °C was used to clean the milking parlour. In the multivariable analyses, for farms applying machine-milking, the temperature of the water emerged as the only significant variable (p = 0.024), whilst in farms applying hand-milking, the only tendency that emerged was for the frequency of collection of milk from the farm tank (p = 0.08). In sheep flocks, recovery of biofilm-forming staphylococci from the bulk-tank milk was associated with higher somatic cell counts and higher total bacterial counts in the milk. The study identified abiotic factors related to the presence and isolation of these bacteria, specifically the temperature of water used for the cleaning of the milking parlour (in farms where machine-milking is applied) and the frequency of milk collection from the farm tank. These factors apply after the production of milk, and they could thus be regulated appropriately in order to reduce bacterial load and improve the quality of milk delivered to dairy plants. In sheep farms, an association was also seen between recovery of biofilm-forming staphylococci and high somatic cell counts in milk.
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Affiliation(s)
- Daphne T. Lianou
- Veterinary Faculty, University of Thessaly, 43100 Karditsa, Greece
| | | | | | | | - Efthymia Petinaki
- University Hospital of Larissa, University of Thessaly, 41110 Larissa, Greece
| | | | - Athina Tzora
- Faculty of Agriculture, University of Ioannina, 47100 Arta, Greece
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Kim B, Gurung S, Han SR, Lee JH, Oh TJ. Comparative Genomic Analysis of Biofilm-Forming Polar Microbacterium sp. Strains PAMC22086 and PAMC21962 Isolated from Extreme Habitats. Microorganisms 2023; 11:1757. [PMID: 37512929 PMCID: PMC10384088 DOI: 10.3390/microorganisms11071757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 06/28/2023] [Accepted: 06/29/2023] [Indexed: 07/30/2023] Open
Abstract
The members of Microbacterium isolated from different environments are known to form peptidoglycan. In this study, we compared the biofilm-forming abilities of Microbacterium sp. PAMC22086 (PAMC22086), which was isolated from the soil in the South Shetland Islands and Microbacterium sp. PAMC21962 (PAMC21962), which was isolated from algae in the South Shetland Islands. The analysis of average nucleotide identity and phylogeny of PAMC22086 revealed a 97% similarity to Microbacterium oxydans VIU2A, while PAMC21962 showed a 99.1% similarity to Microbacterium hominis SGAir0570. For the comparative genomic analysis of PAMC22086 and PAMC21962, the genes related to biofilm formation were identified using EggNOG and KEGG pathway databases. The genes possessed by both PAMC22086 and PAMC21962 are cpdA, phnB, rhlC, and glgC, which regulate virulence, biofilm formation, and multicellular structure. Among the genes indirectly involved in biofilm formation, unlike PAMC21962, PAMC22086 possessed csrA, glgC, and glgB, which are responsible for attachment and glycogen biosynthesis. Additionally, in PAMC22086, additional functional genes rsmA, which is involved in mobility and polysaccharide production, and dksA, GTPase, and oxyR, which play roles in cell cycle and stress response, were identified. In addition, the biofilm-forming ability of the two isolates was examined in vivo using the standard crystal violet staining technique, and morphological differences in the biofilm were investigated. It is evident from the different distribution of biofilm-associated genes between the two strains that the bacteria can survive in different niches by employing distinct strategies. Both strains exhibit distinct morphologies. PAMC22086 forms a biofilm that attaches to the side, while PAMC21962 indicates growth starting from the center. The biofilm formation-related genes in Microbacterium are not well understood. However, it has been observed that Microbacterium species form biofilm regardless of the number of genes they possess. Through comparison between different Microbacterium species, it was revealed that specific core genes are involved in cell adhesion, which plays a crucial role in biofilm formation. This study provides a comprehensive profile of the Microbacterium genus's genomic features and a preliminary understanding of biofilm in this genus, laying the foundation for further research.
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Affiliation(s)
- Byeollee Kim
- Department of Life Science and Biochemical Engineering, SunMoon University, Asan 31460, Republic of Korea
| | - Saru Gurung
- Department of Life Science and Biochemical Engineering, SunMoon University, Asan 31460, Republic of Korea
| | - So-Ra Han
- Bio Big Data-Based Chungnam Smart Clean Research Leader Training Program, SunMoon University, Asan 31460, Republic of Korea
- Genome-Based BioIT Convergence Institute, Asan 31460, Republic of Korea
| | - Jun-Hyuck Lee
- Research Unit of Cryogenic Novel Materials, Korea Polar Research Institute, Incheon 21990, Republic of Korea
| | - Tae-Jin Oh
- Department of Life Science and Biochemical Engineering, SunMoon University, Asan 31460, Republic of Korea
- Bio Big Data-Based Chungnam Smart Clean Research Leader Training Program, SunMoon University, Asan 31460, Republic of Korea
- Genome-Based BioIT Convergence Institute, Asan 31460, Republic of Korea
- Department of Pharmaceutical Engineering and Biotechnology, SunMoon University, Asan 31460, Republic of Korea
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Khan SA, Shakoor A. Recent Strategies and Future Recommendations for the Fabrication of Antimicrobial, Antibiofilm, and Antibiofouling Biomaterials. Int J Nanomedicine 2023; 18:3377-3405. [PMID: 37366489 PMCID: PMC10290865 DOI: 10.2147/ijn.s406078] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 05/06/2023] [Indexed: 06/28/2023] Open
Abstract
Biomaterials and biomedical devices induced life-threatening bacterial infections and other biological adverse effects such as thrombosis and fibrosis have posed a significant threat to global healthcare. Bacterial infections and adverse biological effects are often caused by the formation of microbial biofilms and the adherence of various biomacromolecules, such as platelets, proteins, fibroblasts, and immune cells, to the surfaces of biomaterials and biomedical devices. Due to the programmed interconnected networking of bacteria in microbial biofilms, they are challenging to treat and can withstand several doses of antibiotics. Additionally, antibiotics can kill bacteria but do not prevent the adsorption of biomacromolecules from physiological fluids or implanting sites, which generates a conditioning layer that promotes bacteria's reattachment, development, and eventual biofilm formation. In these viewpoints, we highlighted the magnitude of biomaterials and biomedical device-induced infections, the role of biofilm formation, and biomacromolecule adhesion in human pathogenesis. We then discussed the solutions practiced in healthcare systems for curing biomaterials and biomedical device-induced infections and their limitations. Moreover, this review comprehensively elaborated on the recent advances in designing and fabricating biomaterials and biomedical devices with these three properties: antibacterial (bacterial killing), antibiofilm (biofilm inhibition/prevention), and antibiofouling (biofouling inhibition/prevention) against microbial species and against the adhesion of other biomacromolecules. Besides we also recommended potential directions for further investigations.
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Affiliation(s)
- Shakeel Ahmad Khan
- Department of Applied Biology and Chemical Technology, the Hong Kong Polytechnic University, Hung Hom, Kowloon, 999077, Hong Kong
| | - Adnan Shakoor
- Department of Control and Instrumentation Engineering, King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia
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Maloney SE, Grayton QE, Wai C, Uriyanghai U, Sidhu J, Roy-Chaudhury P, Schoenfisch MH. Nitric Oxide-Releasing Hemodialysis Catheter Lock Solutions. ACS APPLIED MATERIALS & INTERFACES 2023; 15:28907-28921. [PMID: 37285144 DOI: 10.1021/acsami.3c02506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In an attempt to address the significant morbidity, mortality, and economic cost associated with tunneled dialysis catheter (TDC) dysfunction, we report the development of nitric oxide-releasing dialysis catheter lock solutions. Catheter lock solutions with a range of NO payloads and release kinetics were prepared using low-molecular-weight N-diazeniumdiolate nitric oxide donors. Nitric oxide released through the catheter surface as a dissolved gas was maintained at therapeutically relevant levels for at least 72 h, supporting clinical translatability (interdialytic period). Slow, sustained NO release from the catheter surface prevented bacterial adhesion in vitro by 88.9 and 99.7% for Pseudomonas aeruginosa and Staphylococcus epidermidis, respectively, outperforming a burst NO-release profile. Furthermore, bacteria adhered to the catheter surface in vitro prior to lock solution use was reduced by 98.7 and 99.2% for P. aeruginosa and S. epidermidis, respectively, when using a slow releasing NO donor, demonstrating both preventative and treatment potential. The adhesion of proteins to the catheter surface, a process often preceding biofilm formation and thrombosis, was also lessened by 60-65% by sustained NO release. In vitro cytotoxicity of catheter extract solutions to mammalian cells was minimal, supporting the non-toxic nature of the NO-releasing lock solutions. The use of the NO-releasing lock solution in an in vivo TDC porcine model demonstrated decreased infection and thrombosis, enhanced catheter functionality, and improved outcome (i.e., likelihood of survival) as a result of catheter use.
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Affiliation(s)
- Sara E Maloney
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Quincy E Grayton
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Christine Wai
- UNC Kidney Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Unimunkh Uriyanghai
- UNC Kidney Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Jasleen Sidhu
- UNC Kidney Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Prabir Roy-Chaudhury
- UNC Kidney Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Mark H Schoenfisch
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
- Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
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Hindi SS, Sabir JSM, Dawoud UM, Ismail IM, Asiry KA, Mirdad ZM, Abo-Elyousr KA, Shiboob MH, Gabal MA, Albureikan MOI, Alanazi RA, Ibrahim OHM. Nanocellulose-Based Passivated-Carbon Quantum Dots (P-CQDs) for Antimicrobial Applications: A Practical Review. Polymers (Basel) 2023; 15:2660. [PMID: 37376306 DOI: 10.3390/polym15122660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 05/08/2023] [Accepted: 05/16/2023] [Indexed: 06/29/2023] Open
Abstract
Passivated-carbon quantum dots (P-CQDs) have been attracting great interest as an antimicrobial therapy tool due to their bright fluorescence, lack of toxicity, eco-friendly nature, simple synthetic schemes, and possession of photocatalytic functions comparable to those present in traditional nanometric semiconductors. Besides synthetic precursors, CQDs can be synthesized from a plethora of natural resources including microcrystalline cellulose (MCC) and nanocrystalline cellulose (NCC). Converting MCC into NCC is performed chemically via the top-down route, while synthesizing CODs from NCC can be performed via the bottom-up route. Due to the good surface charge status with the NCC precursor, we focused in this review on synthesizing CQDs from nanocelluloses (MCC and NCC) since they could become a potential source for fabricating carbon quantum dots that are affected by pyrolysis temperature. There are several P-CQDs synthesized with a wide spectrum of featured properties, namely functionalized carbon quantum dots (F-CQDs) and passivated carbon quantum dots (P-CQDs). There are two different important P-CQDs, namely 2,2'-ethylenedioxy-bis-ethylamine (EDA-CQDs) and 3-ethoxypropylamine (EPA-CQDs), that have achieved desirable results in the antiviral therapy field. Since NoV is the most common dangerous cause of nonbacterial, acute gastroenteritis outbreaks worldwide, this review deals with NoV in detail. The surficial charge status (SCS) of the P-CQDs plays an important role in their interactions with NoVs. The EDA-CQDs were found to be more effective than EPA-CQDs in inhibiting the NoV binding. This difference may be attributed to their SCS as well as the virus surface. EDA-CQDs with surficial terminal amino (-NH2) groups are positively charged at physiological pH (-NH3+), whereas EPA-CQDs with surficial terminal methyl groups (-CH3) are not charged. Since the NoV particles are negatively charged, they are attracted to the positively charged EDA-CQDs, resulting in enhancing the P-CQDs concentration around the virus particles. The carbon nanotubes (CNTs) were found to be comparable to the P-CQDs in the non-specific binding with NoV capsid proteins, through complementary charges, π-π stacking, and/or hydrophobic interactions.
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Affiliation(s)
- Sherif S Hindi
- Department of Agriculture, Faculty of Environmental Sciences, King Abdullaziz University (KAU), P.O. Box 80208, Jeddah 21589, Saudi Arabia
| | - Jamal S M Sabir
- Department of Biological Sciences, Faculty of Sciences, King Abdullaziz University (KAU), P.O. Box 80208, Jeddah 21589, Saudi Arabia
| | - Uthman M Dawoud
- Department of Chemical and Materials Engineering, King Abdullaziz University (KAU), P.O. Box 80208, Jeddah 21589, Saudi Arabia
| | - Iqbal M Ismail
- Department of Chemistry, Faculty of Science, Center of Excellence in Environmental Studies, King Abdullaziz University (KAU), P.O. Box 80208, Jeddah 21589, Saudi Arabia
| | - Khalid A Asiry
- Department of Agriculture, Faculty of Environmental Sciences, King Abdullaziz University (KAU), P.O. Box 80208, Jeddah 21589, Saudi Arabia
| | - Zohair M Mirdad
- Department of Agriculture, Faculty of Environmental Sciences, King Abdullaziz University (KAU), P.O. Box 80208, Jeddah 21589, Saudi Arabia
| | - Kamal A Abo-Elyousr
- Department of Agriculture, Faculty of Environmental Sciences, King Abdullaziz University (KAU), P.O. Box 80208, Jeddah 21589, Saudi Arabia
- Plant Pathology Department, Faculty of Agriculture, Assiut University, Assiut 71526, Egypt
| | - Mohamed H Shiboob
- Department of Environment, Faculty of Environmental Sciences, King Abdullaziz University (KAU), P.O. Box 80208, Jeddah 21589, Saudi Arabia
| | - Mohamed A Gabal
- Department of Chemistry, Faculty of Science, King Abdullaziz University (KAU), P.O. Box 80208, Jeddah 21589, Saudi Arabia
| | - Mona Othman I Albureikan
- Department of Biological Sciences, Faculty of Sciences, King Abdullaziz University (KAU), P.O. Box 80208, Jeddah 21589, Saudi Arabia
| | - Rakan A Alanazi
- Department of Agriculture, Faculty of Environmental Sciences, King Abdullaziz University (KAU), P.O. Box 80208, Jeddah 21589, Saudi Arabia
| | - Omer H M Ibrahim
- Department of Agriculture, Faculty of Environmental Sciences, King Abdullaziz University (KAU), P.O. Box 80208, Jeddah 21589, Saudi Arabia
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Bonafé ACF, Oliveira DFLM, Fernandes EE, Garcia MT, Bressane A, de Oliveira W, de Mello Rode S. Microbiological evaluation in invisible aligner chemical cleaning methods against Candida albicans and Streptococcus mutans. Am J Orthod Dentofacial Orthop 2023:S0889-5406(23)00272-X. [PMID: 37294233 DOI: 10.1016/j.ajodo.2023.05.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 05/01/2023] [Accepted: 05/01/2023] [Indexed: 06/10/2023]
Abstract
INTRODUCTION This study aimed to assess the efficacy of chemical agents in removing Candida albicans and Streptococcus mutans biofilm from invisible aligners. METHODS The samples were made of EX30 Invisalign trays, biofilm was cultured by standardized suspensions of C. albicans ATCC strain and S. mutans clinical strain on the sample. The treatments used were 0.5% sodium hypochlorite (NaClO) (20 minutes), 1% NaClO (10 minutes), chlorhexidine (5 minutes), peroxide (15 minutes), and orthophosphoric acid (15 seconds). The control group received phosphate-buffered saline for 10 minutes. The colony-forming units per milliliter of each microorganism were determined by serial dilutions seeded in plates with selective culture mediums for each one. Data were analyzed by the Kruskal-Wallis and Conover-Iman tests at an α of 0.05. RESULTS For the C. albicans biofilm group, the control group had 9.7 Log10 of microorganism growth, and all treatment groups had statistically significant biofilm reduction, in which chlorhexidine presented the highest inhibition of 3 Log10, followed by alkaline peroxide and orthophosphoric acid both with 2.6 Log10, 1% NaClO (2.5 Log10), and 0.5% NaClO (2 Log10). As for S. mutans, the control group had 8.9 Log10 of growth, and a total microorganism inhibition was reached by chlorhexidine, 1% NaClO, and orthophosphoric acid, whereas alkaline peroxide inhibited growth to 7.9 Log10 and 0.5% NaClO 5.1 Log10. CONCLUSIONS Within the limitations, chlorhexidine and orthophosphoric acid had greater efficacy in both biofilms. In addition, 1% NaClO and alkaline peroxide also had significant effects; therefore, their incorporation aligners disinfection protocols are valid.
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Affiliation(s)
- Ana Carolina Ferreira Bonafé
- Department of Diagnosis and Surgery, Institute of Science and Technology, São Paulo State University, São José dos Campos, Brazil.
| | | | - Ellen Eduarda Fernandes
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, São Paulo State University, São José dos Campos, Brazil
| | - Maíra Terra Garcia
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, São Paulo State University, São José dos Campos, Brazil
| | - Adriano Bressane
- Department of Environment Engineering, Institute of Science and Technology, São Paulo State University, São José dos Campos, Brazil
| | - Wagner de Oliveira
- Department of Dental Materials and Prosthodontics, Institute of Science and Technology, São Paulo State University, São José dos Campos, Brazil
| | - Sigmar de Mello Rode
- Department of Dental Materials and Prosthodontics, Institute of Science and Technology, São Paulo State University, São José dos Campos, Brazil
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Zaidi S, Ali K, Khan AU. It's all relative: analyzing microbiome compositions, its significance, pathogenesis and microbiota derived biofilms: Challenges and opportunities for disease intervention. Arch Microbiol 2023; 205:257. [PMID: 37280443 DOI: 10.1007/s00203-023-03589-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 05/06/2023] [Accepted: 05/18/2023] [Indexed: 06/08/2023]
Abstract
Concept of microorganisms has largely been perceived from their pathogenic view point. Nevertheless, it is being gradually revisited in terms of its significance to human health and now appears to be the most dominant force that shapes the immune system of the human body and also determines an individual's predisposition to diseases. Human inhabits bacterial diversity (which is predominant among all microbial communities in human body) occupying 0.3% of body mass, known as microbiota. On birth, a part of microbiota that child obtains is essentially a mother's legacy. So, the review was initiated with this critical topic of microbiotal inheritance. Since, each body site has distinct physiological specifications; therefore, they contain discrete microbiome composition that has been separately discussed along with dysbiosis-induced pathologies originating in different body organs. Factors affecting microbiome composition and may cause dysbiosis like antibiotics, delivery, feeding method etc. as well as the strategies that immune system adopts to prevent dysbiosis have been highlighted. We also tried to bring into attention the topic of dysbiosis induced biofilms, that enables cohort to survive stresses, evolve, disseminate and infection resurgence that is still in dormancy. Eventually, we put spotlight on microbiome significance in medical therapeutics. We didn't merely confine article to gut microbiota, that is being studied more extensively. Numerous community forms at diverse body sites are inter-related, and being exposed to awfully variable perturbations appear to be challenging to evaluate perturbation risks holistically. All aspects have been elaborately discussed to achieve a global depiction of human microbiota in order to meet urgent necessity for protocol standardisation. Demonstrates that environmental challenges (antibiotic use, alterations in diet, stress, smoking etc.) might cause dysbiosis i.e. transition of healthy microbiome composition to the one in which pathogenic microorganisms become more abundant, and eventually results in an infected state.
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Affiliation(s)
- Sahar Zaidi
- Medical Microbiology and Molecular Biology Laboratory, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, 202002, India
| | - Khursheed Ali
- Medical Microbiology and Molecular Biology Laboratory, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, 202002, India
| | - Asad U Khan
- Medical Microbiology and Molecular Biology Laboratory, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, 202002, India.
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