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Wang X, Chen C, Hu J, Liu C, Ning Y, Lu F. Current strategies for monitoring and controlling bacterial biofilm formation on medical surfaces. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 282:116709. [PMID: 39024943 DOI: 10.1016/j.ecoenv.2024.116709] [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: 03/20/2024] [Revised: 07/03/2024] [Accepted: 07/07/2024] [Indexed: 07/20/2024]
Abstract
Biofilms, intricate microbial communities that attach to surfaces, especially medical devices, form an exopolysaccharide matrix, which enables bacteria to resist environmental pressures and conventional antimicrobial agents, leading to the emergence of multi-drug resistance. Biofilm-related infections associated with medical devices are a significant public health threat, compromising device performance. Therefore, developing effective methods for supervising and managing biofilm growth is imperative. This in-depth review presents a systematic overview of strategies for monitoring and controlling bacterial biofilms. We first outline the biofilm creation process and its regulatory mechanisms. The discussion then progresses to advancements in biosensors for biofilm detection and diverse treatment strategies. Lastly, this review examines the obstacles and new perspectives associated with this domain to facilitate the advancement of innovative monitoring and control solutions. These advancements are vital in combating the spread of multi drug-resistant bacteria and mitigating public health risks associated with infections from biofilm formation on medical instruments.
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Affiliation(s)
- Xiaoqi Wang
- Department of integrated traditional Chinese and Western Medicine, The Medicine School of Hunan University of Chinese Medicine, Changsha, Hunan 410208, People's Republic of China
| | - Chunjing Chen
- Department of Microbiology, The Medicine School of Hunan University of Chinese Medicine, Changsha, Hunan 410208, People's Republic of China
| | - Jue Hu
- Department of Microbiology, The Medicine School of Hunan University of Chinese Medicine, Changsha, Hunan 410208, People's Republic of China
| | - Chang Liu
- Department of Microbiology, The Medicine School of Hunan University of Chinese Medicine, Changsha, Hunan 410208, People's Republic of China
| | - Yi Ning
- Department of Microbiology, The Medicine School of Hunan University of Chinese Medicine, Changsha, Hunan 410208, People's Republic of China.
| | - Fangguo Lu
- Department of Microbiology, The Medicine School of Hunan University of Chinese Medicine, Changsha, Hunan 410208, People's Republic of China.
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2
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Kang J, Li R, Hu Y, Huang X, Chen XX, Han BZ. Microbial interactions in mixed-species biofilms on the surfaces of Baijiu brewing environments. Food Res Int 2024; 191:114698. [PMID: 39059954 DOI: 10.1016/j.foodres.2024.114698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 06/24/2024] [Accepted: 06/26/2024] [Indexed: 07/28/2024]
Abstract
Environmental microorganisms commonly inhabit dense multispecies biofilms, fostering mutualistic relationships and co-evolution. However, the mechanisms underlying biofilm formation and microbial interactions within the Baijiu fermentation microecosystem remain poorly understood. Hence, the objective of this study was to investigate the composition, structure, and interactions of microorganisms residing in biofilms on environmental surfaces in Baijiu production. The results revealed a shift in the bacteria-fungi interaction network following fermentation, transitioning from a cooperative/symbiotic relationship to a competitive/antagonistic dynamic. Core microbiota within the biofilms comprised lactic acid bacteria (LAB), yeast, and filamentous fungi. From the environmental surface samples, we isolated two strains of LAB (Lactiplantibacillus pentosus EB27 and Pediococcus pentosaceus EB35) and one strain of yeast (Pichia kudriavzevii EF8), all displaying remarkable biofilm formation and fermentation potential. Co-culturing LAB and yeast demonstrated a superior capacity for dual-species biofilm formation compared to mono-species biofilms. The dual-species biofilm displayed a two-layer structure, with LAB in the lower layer and serving as the foundation for the yeast community in the upper layer. The upper layer exhibited a dense distribution of yeast, enhancing aerobic respiration. Metabolic activities in the dual-species biofilm, such as ABC transporter, oxidative phosphorylation, citric acid cycle, sulfur metabolism, glycine, serine, threonine metabolism, lysine degradation, and cysteine and methionine metabolism, showed significant alterations compared to LAB mono-species biofilms. Moreover, bacterial chemotaxis, starch, and sucrose metabolism in the dual-species biofilm exhibited distinct patterns from those observed in the yeast mono-species biofilm. This study demonstrated that a core microbiota with fermentation potential may exist in the form of a biofilm on the surface of a Baijiu brewing environment. These findings provide a novel strategy for employing synthetic stable microbiotas in the intelligent brewing of Baijiu.
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Affiliation(s)
- Jiamu Kang
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing, China; Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China; School of Food Science and Engineering, Hainan University, Haikou, China
| | - Rengshu Li
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing, China; Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Yunan Hu
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Xiaoning Huang
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China; Department of Bioengineering, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Xiao-Xue Chen
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing, China.
| | - Bei-Zhong Han
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing, China; Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.
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3
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Belfiori B, Riccioni C, Pietrella D, Rubini A, Caceres ME, Pupilli F, Bellucci M, De Marchis F. Vicia ervilia lectin (VEA) has an antibiofilm effect on both Gram-positive and Gram-negative pathogenic bacteria. Arch Microbiol 2024; 206:371. [PMID: 39122975 PMCID: PMC11315768 DOI: 10.1007/s00203-024-04100-6] [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: 06/06/2024] [Revised: 07/23/2024] [Accepted: 08/02/2024] [Indexed: 08/12/2024]
Abstract
Bacterial growing resistance to antibiotics poses a critical threat to global health. This study investigates, for the first time, the antibiofilm properties of Vicia ervilia agglutinin (VEA) from six different V. ervilia accessions against pathogenic bacteria, and the yeast Candida albicans. In the absence of antimicrobial properties, purified VEA significantly inhibited biofilm formation, both in Gram-positive and Gram-negative bacteria, but not in C. albicans. With an inhibitory concentration ranging from 100 to 500 µg/ml, the VEA antibiofilm activity was more relevant against the Gram-positive bacteria Streptococcus aureus and Staphylococcus epidermidis, whose biofilm was reduced up to 50% by VEA purified from accessions #5 and #36. VEA antibiofilm variability between accessions was observed, likely due to co-purified small molecules rather than differences in VEA protein sequences. In conclusion, VEA seed extracts from the accessions with the highest antibiofilm activity could represent a valid approach for the development of an effective antibiofilm agent.
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Affiliation(s)
- Beatrice Belfiori
- Institute of Biosciences and Bioresources (IBBR), National Research Council (CNR), 06128, Perugia, Italy
| | - Claudia Riccioni
- Institute of Biosciences and Bioresources (IBBR), National Research Council (CNR), 06128, Perugia, Italy
| | - Donatella Pietrella
- Department of Medicine and Surgery, University of Perugia, Piazzale S. Gambuli 1, 06132, Perugia, Italy
| | - Andrea Rubini
- Institute of Biosciences and Bioresources (IBBR), National Research Council (CNR), 06128, Perugia, Italy
| | - Maria Eugenia Caceres
- Institute of Biosciences and Bioresources (IBBR), National Research Council (CNR), 06128, Perugia, Italy
| | - Fulvio Pupilli
- Institute of Biosciences and Bioresources (IBBR), National Research Council (CNR), 06128, Perugia, Italy
| | - Michele Bellucci
- Institute of Biosciences and Bioresources (IBBR), National Research Council (CNR), 06128, Perugia, Italy.
| | - Francesca De Marchis
- Institute of Biosciences and Bioresources (IBBR), National Research Council (CNR), 06128, Perugia, Italy.
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4
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Aktekin MB, Oksuz Z, Turkmenoglu B, Istifli ES, Kuzucu M, Algul O. Synthesis and evaluation of di-heterocyclic benzazole compounds as potential antibacterial and anti-biofilm agents against Staphylococcus aureus. Chem Biol Drug Des 2024; 104:e14601. [PMID: 39085984 DOI: 10.1111/cbdd.14601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 05/26/2024] [Accepted: 07/19/2024] [Indexed: 08/02/2024]
Abstract
Cumulative escalation in antibiotic-resistant pathogens necessitates the quest for novel antimicrobial agents, as current options continue to diminish bacterial resistance. Herein, we report the synthesis of di-heterocyclic benzazole structures (12-19) and their in vitro evaluation for some biological activities. Compounds 16 and 17 demonstrated potent antibacterial activity (MIC = 7.81 μg/mL) against Staphylococcus aureus, along with significant anti-biofilm activity. Noteworthy is the capability of Compound 17 to inhibit biofilm formation by at least 50% at sub-MIC (3.90 μg/mL) concentration. Furthermore, both compounds exhibited the potential to inhibit preformed biofilm by at least 50% at the MIC concentration (7.81 μg/mL). Additionally, Compounds 16 and 17 were examined for cytotoxic effects in HFF-1 cells, using the MTT method, and screened for binding interactions within the active site of S. aureus DNA gyrase using in silico molecular docking technique, employing AutoDock 4.2.6 and Schrödinger Glidse programs. Overall, our findings highlight Compounds 16 and 17 as promising scaffolds warranting further optimization for the development of effective antibacterial and anti-biofilm agents.
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Affiliation(s)
- Mine Buga Aktekin
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Mersin University, Mersin, Turkey
- Department of Pharmacy Services, Vocational School of Health Services, Tarsus University, Mersin, Turkey
| | - Zehra Oksuz
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Mersin University, Mersin, Turkey
| | - Burcin Turkmenoglu
- Department of Analytical Chemistry, Faculty of Pharmacy, Erzincan Binali Yildirim University, Erzincan, Turkey
| | - Erman Salih Istifli
- Department of Biology, Faculty of Science and Literature, Çukurova University, Adana, Turkey
| | - Mehmet Kuzucu
- Department of Biology, Faculty of Arts and Sciences, Erzincan Binali Yıldırım University, Erzincan, Turkey
| | - Oztekin Algul
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Mersin University, Mersin, Turkey
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Erzincan Binali Yildirim University, Erzincan, Turkey
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Roscetto E, Di Gennaro D, Ascione T, Galdiero U, Aversa M, Festa E, Catania MR, Balato G. Antiseptics' Concentration, Combination, and Exposure Time on Bacterial and Fungal Biofilm Eradication. Arthroplast Today 2024; 28:101468. [PMID: 39139360 PMCID: PMC11320471 DOI: 10.1016/j.artd.2024.101468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 05/20/2024] [Accepted: 06/10/2024] [Indexed: 08/15/2024] Open
Abstract
Background This study aims to assess the activity of solutions containing povidone-iodine (PI) and hydrogen peroxide (H2O2) alone or combined on the biofilm of microbial species in the contest of periprosthetic joint infection (PJI). Methods Different antiseptic solutions were tested on 2-day-old biofilms of Gram-positive and Gram-negative bacteria and fungi at 1 and 3 minutes of exposure. The efficacy of these solutions was evaluated by measuring the biofilm metabolic activity by methoxynitrosulfophenyl-tetrazolium carboxanilide (XTT) reduction assay. The anti-biofilm effect of 5% PI and 0.3% PI + 0.5% H2O2 was tested on a 5-day-old biofilm using colony-forming unit counts and an XTT reduction assay. Results PI and H2O2 solutions showed concentration-dependent anti-biofilm activity except for E. faecalis. PI at 5% was the most active solution against the 2-day-old biofilm of all test microorganisms. The 0.3% PI + 0.5% H₂O₂ solution had a significant effect only at 3 minutes. The 5% PI and 0.3% PI + 0.5% H₂O₂ effect was evaluated on 5-day-old biofilms. PI at 5% produced a significant reduction in metabolic activity at both 1 and 3 minutes; 0.3% PI + 0.5% H₂O₂ caused a significant activity against all Gram-positive strains after 3 minutes, with a greater metabolic activity reduction than 5% PI. Conclusions In the case of PJI caused by Gram-positive bacteria, 0.3% PI + 0.5% H₂O₂ could be used for wound irrigation for 3 minutes of exposure. In the case of PJI with a different etiological agent or PJI with an unknown etiology, it is advisable to use 5% PI for 1 minute of exposure.
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Affiliation(s)
- Emanuela Roscetto
- Department Molecular Medicine and Medical Biotechnology, “Federico II” University, Naples, Italy
| | - Donato Di Gennaro
- Section of Orthopaedic Surgery, Department of Public Health, “Federico II” University, Naples, Italy
| | - Tiziana Ascione
- Department of Medicine, Service of Infectious Disease, Cardarelli Hospital Naples, Naples, Italy
| | - Umberto Galdiero
- Department Molecular Medicine and Medical Biotechnology, “Federico II” University, Naples, Italy
| | - Martina Aversa
- Department Molecular Medicine and Medical Biotechnology, “Federico II” University, Naples, Italy
| | - Enrico Festa
- Section of Orthopaedic Surgery, Department of Public Health, “Federico II” University, Naples, Italy
| | - Maria Rosaria Catania
- Department Molecular Medicine and Medical Biotechnology, “Federico II” University, Naples, Italy
| | - Giovanni Balato
- Section of Orthopaedic Surgery, Department of Public Health, “Federico II” University, Naples, Italy
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6
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Jandl B, Dighe S, Gasche C, Makristathis A, Muttenthaler M. Intestinal biofilms: pathophysiological relevance, host defense, and therapeutic opportunities. Clin Microbiol Rev 2024:e0013323. [PMID: 38995034 DOI: 10.1128/cmr.00133-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2024] Open
Abstract
SUMMARYThe human intestinal tract harbors a profound variety of microorganisms that live in symbiosis with the host and each other. It is a complex and highly dynamic environment whose homeostasis directly relates to human health. Dysbiosis of the gut microbiota and polymicrobial biofilms have been associated with gastrointestinal diseases, including irritable bowel syndrome, inflammatory bowel diseases, and colorectal cancers. This review covers the molecular composition and organization of intestinal biofilms, mechanistic aspects of biofilm signaling networks for bacterial communication and behavior, and synergistic effects in polymicrobial biofilms. It further describes the clinical relevance and diseases associated with gut biofilms, the role of biofilms in antimicrobial resistance, and the intestinal host defense system and therapeutic strategies counteracting biofilms. Taken together, this review summarizes the latest knowledge and research on intestinal biofilms and their role in gut disorders and provides directions toward the development of biofilm-specific treatments.
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Affiliation(s)
- Bernhard Jandl
- Faculty of Chemistry, Institute of Biological Chemistry, University of Vienna, Vienna, Austria
- Vienna Doctoral School in Chemistry (DoSChem), University of Vienna, Vienna, Austria
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia
| | - Satish Dighe
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia
| | - Christoph Gasche
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Medical University of Vienna, Vienna, Austria
- Loha for Life, Center for Gastroenterology and Iron Deficiency, Vienna, Austria
| | - Athanasios Makristathis
- Department of Laboratory Medicine, Division of Clinical Microbiology, Medical University of Vienna, Vienna, Austria
| | - Markus Muttenthaler
- Faculty of Chemistry, Institute of Biological Chemistry, University of Vienna, Vienna, Austria
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia
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7
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Tungare K, Gupta J, Bhori M, Garse S, Kadam A, Jha P, Jobby R, Amanullah M, Vijayakumar S. Nanomaterial in controlling biofilms and virulence of microbial pathogens. Microb Pathog 2024; 192:106722. [PMID: 38815775 DOI: 10.1016/j.micpath.2024.106722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 05/25/2024] [Accepted: 05/27/2024] [Indexed: 06/01/2024]
Abstract
The escalating threat of antimicrobial resistance (AMR) poses a grave concern to global public health, exacerbated by the alarming shortage of effective antibiotics in the pipeline. Biofilms, intricate populations of bacteria encased in self-produced matrices, pose a significant challenge to treatment, as they enhance resistance to antibiotics and contribute to the persistence of organisms. Amid these challenges, nanotechnology emerges as a promising domain in the fight against biofilms. Nanomaterials, with their unique properties at the nanoscale, offer innovative antibacterial modalities not present in traditional defensive mechanisms. This comprehensive review focuses on the potential of nanotechnology in combating biofilms, focusing on green-synthesized nanoparticles and their associated anti-biofilm potential. The review encompasses various aspects of nanoparticle-mediated biofilm inhibition, including mechanisms of action. The diverse mechanisms of action of green-synthesized nanoparticles offer valuable insights into their potential applications in addressing AMR and improving treatment outcomes, highlighting novel strategies in the ongoing battle against infectious diseases.
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Affiliation(s)
- Kanchanlata Tungare
- School of Biotechnology and Bioinformatics, D Y Patil Deemed to be University, Navi Mumbai, Plot no 50, Sector 15, CBD Belapur, 400614, Maharashtra, India.
| | - Juhi Gupta
- School of Biotechnology and Bioinformatics, D Y Patil Deemed to be University, Navi Mumbai, Plot no 50, Sector 15, CBD Belapur, 400614, Maharashtra, India
| | - Mustansir Bhori
- Inveniolife Technology PVT LTD, Office No.118, Grow More Tower, Plot No.5, Sector 2, Kharghar, Navi Mumbai, Maharashtra, 410210, India
| | - Samiksha Garse
- School of Biotechnology and Bioinformatics, D Y Patil Deemed to be University, Navi Mumbai, Plot no 50, Sector 15, CBD Belapur, 400614, Maharashtra, India
| | - Aayushi Kadam
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada; Anatek Services PVT LTD, 10, Sai Chamber, Near Santacruz Railway Bridge, Sen Nagar, Santacruz East, Mumbai, Maharashtra, 400055, India
| | - Pamela Jha
- Department of Biological Sciences, Sunandan Divatia School of Science, NMIMS Deemed to be University, Mumbai, Maharashtra, India
| | - Renitta Jobby
- Amity Institute of Biotechnology, Amity University, Maharashtra, Mumbai-Pune Expressway, Bhatan, Panvel, Navi Mumbai, Maharashtra, 410206, India; Amity Centre of Excellence in Astrobiology, Amity University Maharashtra, Mumbai-Pune Expressway, Bhatan, Panvel, Navi Mumbai, Maharashtra, 410206, India
| | - Mohammed Amanullah
- Department of Clinical Biochemistry, College of Medicine, King Khalid University, Abha, Saudi Arabia, 61421
| | - Sekar Vijayakumar
- Center for Global Health Research (CGHR), Saveetha Medical College, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai, India; Marine College, Shandong University, Weihai, 264209, PR China
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8
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Singh M, Anees M, Afreen A, Kalyanasundaram D, Bhatnagar N, Singh H. Development of iodine based sustained release antimicrobial coatings for polyurethane voice prostheses. J Mater Chem B 2024; 12:5907-5916. [PMID: 38804192 DOI: 10.1039/d4tb00439f] [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: 05/29/2024]
Abstract
Voice prostheses are known to fail in few weeks to several months of implantation due to the clogging mainly caused by microbial biofilm formation, which is a cause of concern. Iodine is a known broad-spectrum biocide and is reported to easily form complexes with various polymers. For long term device disinfection, strong iodine complexation that offers sustained iodine release for a prolonged period is essential. The present research work deals with the synthesis of a poly(methyl methacrylate-n-butyl acrylate-N-vinyl-2-pyrrolidone) (poly[MMA-BA-NVP]) tercopolymer through free radical polymerization for surface coating thermoplastic polyurethane (TPU) based voice prostheses. The NVP content in the tercopolymer was varied from 20% to 50% to optimise iodine loading and subsequent release. Base TPU coated with the tercopolymer was treated with 4% aqueous iodine solution at room temperature (28 ± 3 °C) for two hours. It was observed that the tercopolymer containing 35% N-vinyl-2-pyrrolidone (NVP), 32.5% methyl methacrylate (MMA) and 32.5% butyl acrylate (nBA) gave a stable coating on TPUs together with sustained iodine release for a prolonged period. Furthermore, the tercopolymer coated and iodine loaded TPUs exhibited excellent antimicrobial activity against Candida albicans, Staphylococcus aureus and Escherichia coli.
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Affiliation(s)
- Manjeet Singh
- Centre for Biomedical Engineering, Indian Institute of Technology Delhi, New Delhi, 110016, India.
| | - Mohd Anees
- Centre for Biomedical Engineering, Indian Institute of Technology Delhi, New Delhi, 110016, India.
| | - Aiman Afreen
- Centre for Biomedical Engineering, Indian Institute of Technology Delhi, New Delhi, 110016, India.
| | - Dinesh Kalyanasundaram
- Centre for Biomedical Engineering, Indian Institute of Technology Delhi, New Delhi, 110016, India.
| | - Naresh Bhatnagar
- Department of Mechanical Engineering, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Harpal Singh
- Centre for Biomedical Engineering, Indian Institute of Technology Delhi, New Delhi, 110016, India.
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Santibáñez N, Vega M, Pérez T, Enriquez R, Escalona CE, Oliver C, Romero A. In vitro effects of phytogenic feed additive on Piscirickettsia salmonis growth and biofilm formation. JOURNAL OF FISH DISEASES 2024; 47:e13913. [PMID: 38421380 DOI: 10.1111/jfd.13913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 12/15/2023] [Accepted: 12/20/2023] [Indexed: 03/02/2024]
Abstract
Piscirickettsiosis is the main cause of mortality in salmonids of commercial importance in Chile, which is caused by Piscirickettsia salmonis, a Gram-negative, γ-proteobacteria that can produce biofilm as one of its virulence factors. The Chilean salmon industry uses large amounts of antibiotics to control piscirickettsiosis outbreaks, which has raised concern about its environmental impact and the potential to induce antibiotic resistance. Thus, the use of phytogenic feed additives (PFA) with antibacterial activity emerges as an interesting alternative to antimicrobials. Our study describes the antimicrobial action of an Andrographis paniculate-extracted PFA on P. salmonis planktonic growth and biofilm formation. We observed complete inhibition of planktonic and biofilm growth with 500 and 400 μg/mL of PFA for P. salmonis LF-89 and EM-90-like strains, respectively. Furthermore, 500 μg/mL of PFA was bactericidal for both evaluated bacterial strains. Sub-inhibitory doses of PFA increase the transcript levels of stress (groEL), biofilm (pslD), and efflux pump (acrB) genes for both P. salmonis strains in planktonic and sessile conditions. In conclusion, our results demonstrate the antibacterial effect of PFA against P. salmonis in vitro, highlighting the potential of PFA as an alternative to control Piscirickettsiosis.
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Affiliation(s)
- Natacha Santibáñez
- Laboratorio de Inmunología y Estrés de Organismos Acuáticos, Instituto de Patología Animal, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
- Interdisciplinary Center for Aquaculture Research (INCAR), Centro FONDAP, Concepción, Chile
| | - Matías Vega
- Laboratorio de Inmunología y Estrés de Organismos Acuáticos, Instituto de Patología Animal, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
- Interdisciplinary Center for Aquaculture Research (INCAR), Centro FONDAP, Concepción, Chile
| | - Tatiana Pérez
- Laboratorio de Inmunología y Estrés de Organismos Acuáticos, Instituto de Patología Animal, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
- Interdisciplinary Center for Aquaculture Research (INCAR), Centro FONDAP, Concepción, Chile
| | - Ricardo Enriquez
- Laboratorio de Inmunología y Estrés de Organismos Acuáticos, Instituto de Patología Animal, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
| | - Carla Estefanía Escalona
- Laboratorio de Inmunología y Estrés de Organismos Acuáticos, Instituto de Patología Animal, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
- Interdisciplinary Center for Aquaculture Research (INCAR), Centro FONDAP, Concepción, Chile
| | - Cristian Oliver
- Laboratorio de Inmunología y Estrés de Organismos Acuáticos, Instituto de Patología Animal, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
| | - Alex Romero
- Laboratorio de Inmunología y Estrés de Organismos Acuáticos, Instituto de Patología Animal, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
- Interdisciplinary Center for Aquaculture Research (INCAR), Centro FONDAP, Concepción, Chile
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10
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Liu G, Qin P, Cheng X, Wu L, Zhao W, Gao W. Evaluation of the mechanistic basis for the antibacterial activity of ursolic acid against Staphylococcus aureus. Front Microbiol 2024; 15:1389242. [PMID: 38827151 PMCID: PMC11140147 DOI: 10.3389/fmicb.2024.1389242] [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: 02/21/2024] [Accepted: 05/03/2024] [Indexed: 06/04/2024] Open
Abstract
The antibiotics are generally regarded as the first choice approach to treat dairy mastitis, targeting the public health problems associated with the food safety and the emergence of antibioticresistant bacteria. The objective of the study was to evaluate the antibacterial efficacy of ursolic acid (UA) when used to treat Staphylococcus aureus and other isolates associated with bovine mastitis and to clarify the mechanistic basis for these effects. The bacteriostatic properties of UA extracted from Rosmarinus officinalis L. at four different purity levels were assessed by calculating minimum inhibitory concentration (MIC) values, while the synergistic effects of combining 98% UA with antibiotics were evaluated by measuring the fractional inhibitory concentration index (FICI). Changes in biofilm formation and the growth curves of the clinical isolates were assessed to clarify the bacteriostatic effect of UA. Furthermore, the cell wall integrity, protein synthesis, and reactive oxygen species (ROS) production were assessed to determine the antibacterial mechanism of UA treatment. Ultimately, UA was revealed to exhibit robust activity against Gram-positive bacteria including S. aureus (ATCC 25923), Streptococcus dysgalactiae (ATCC27957), Streptococcus agalactiae (ATCC13813), Enterococcus faecalis (ATCC29212), and Streptococcus mutans (ATCC25175). However, it did not affect Escherichia coli (ATCC 25922). The MIC values of UA preparations that were 98, 50, 30, and 10% pure against S. aureus were 39, 312, 625, and 625 μg/mL, respectively, whereas the corresponding MIC for E. coli was >5,000 μg/mL. The minimum bactericidal concentrations of 98% UA when used to treat three clinical S. aureus isolates (S4, S5, and S6) were 78, 78, and 156 μg/mL, respectively. Levels of biofilm formation for clinical S. aureus isolates decreased with increasing 98% UA concentrations. Above the MIC dose, UA treatment resulted in the dissolution of bacterial cell walls and membranes, with cells becoming irregularly shaped and exhibiting markedly impaired intracellular protein synthesis. S. aureus treated with 98% UA was able to rapidly promote intracellular ROS biogenesis. Together, these data highlight the promising utility of UA as a compound that can be used together with other antibiotics for the treatment of infections caused by S. aureus.
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Affiliation(s)
- Guanhui Liu
- School of Life Sciences and Food Engineering, Hebei University of Engineering, Handan, China
| | - Peng Qin
- Chenguang Biotechnology Group Handan Co., Ltd., Handan, China
| | - Xinying Cheng
- Chenguang Biotechnology Group Handan Co., Ltd., Handan, China
| | - Lifei Wu
- Hebei Plant Extraction Innovation Center Co., Ltd., Handan, China
- Hebei Province Plant Source Animal Health Products Technology Innovation Center, Handan, China
| | - Wentao Zhao
- School of Life Sciences and Food Engineering, Hebei University of Engineering, Handan, China
| | - Wei Gao
- Hebei Plant Extraction Innovation Center Co., Ltd., Handan, China
- Hebei Province Plant Source Animal Health Products Technology Innovation Center, Handan, China
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11
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Li X, Li Y, Xiong B, Qiu S. Progress of Antimicrobial Mechanisms of Stilbenoids. Pharmaceutics 2024; 16:663. [PMID: 38794325 PMCID: PMC11124934 DOI: 10.3390/pharmaceutics16050663] [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: 04/05/2024] [Revised: 05/13/2024] [Accepted: 05/14/2024] [Indexed: 05/26/2024] Open
Abstract
Antimicrobial drugs have made outstanding contributions to the treatment of pathogenic infections. However, the emergence of drug resistance continues to be a major threat to human health in recent years, and therefore, the search for novel antimicrobial drugs is particularly urgent. With a deeper understanding of microbial habits and drug resistance mechanisms, various creative strategies for the development of novel antibiotics have been proposed. Stilbenoids, characterized by a C6-C2-C6 carbon skeleton, have recently been widely recognized for their flexible antimicrobial roles. Here, we comprehensively summarize the mode of action of stilbenoids from the viewpoint of their direct antimicrobial properties, antibiofilm and antivirulence activities and their role in reversing drug resistance. This review will provide an important reference for the future development and research into the mechanisms of stilbenoids as antimicrobial agents.
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Affiliation(s)
- Xiancai Li
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China;
| | - Yongqing Li
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China;
| | - Binghong Xiong
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China;
| | - Shengxiang Qiu
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China;
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12
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Guan Y, Zheng H, Zeng Z, Tu Y. Surgical procedures for the treatment of fungal periprosthetic infection following hip arthroplasty: a systematic scoping review. Ann Med Surg (Lond) 2024; 86:2786-2793. [PMID: 38694320 PMCID: PMC11060286 DOI: 10.1097/ms9.0000000000001864] [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: 09/29/2023] [Accepted: 02/14/2024] [Indexed: 05/04/2024] Open
Abstract
Background There has been limited literature synthesizing the therapeutic effects of surgical procedures for fungal periprosthetic joint infection (PJI) following hip arthroplasty. The authors' current study aims to comprehensively review and analyze those relevant literature, and carefully make recommendations for future clinical practices. Methods Our current study was carried out in accordance with the PRISMA 2020 statement. Studies regarding the surgical management of fungal PJI following hip arthroplasty were collected via a thorough search of PubMed, Embase and Google scholar databases. The search was lastly performed in March 2023. Non-English language, reviews, articles with duplicated data, and articles without clear information about the type of fungal pathogens and treatment options were excluded. The authors evaluated their systematic review compliance by using AMSTAR 2 criteria and fell in moderate quality. Clinical outcomes of different surgical procedures were evaluated, and a binary logistic regression model was used to identify the risks associated with treatment failure. Data analyses were performed using the SPSS version 19.0. Results A total of 33 articles encompassing 80 patients with fungal PJI following hip arthroplasty were identified. Candida albicans was the most frequently isolated fungus (56.3%, 45/80). The overall treatment success was achieved in 71.1% (54/76) of the reported cases. Univariate analysis showed that the differences of success rate were not significant between publication periods, genders, ages, specimen collection methods, and fungal pathogens. Treatment success rate was 47.4% (9/19) in fungal PJI cases with bacterial co-infection, significantly lower than those without [vs. 79.0% (45/57), P=0.017]. The pooled success rate for surgical debridement, spacer implantation, resection arthroplasty, one-stage revision, and two-stage revision was 50.0% (4/8), 42.9% (3/7), 55.0% (11/20), 86.7% (13/15), and 88.5% (23/26), respectively, with significant differences between them (P=0.009). A binary logistic regression model showed that bacterial co-infection and surgical option were the two significant risk factors associated with treatment failure for fungal PJI following hip arthroplasty. Discussion Regarding the surgical treatment of fungal PJI following hip arthroplasty, patients with bacterial co-infection, and those treated with surgical procedures such as debridement, spacer implantation, and resection arthroplasty should be aware of the higher risks of failure. Nonetheless, future multiple-centre cohort studies are required to establish the optimal treatment.
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Affiliation(s)
| | | | - Zhimin Zeng
- Orthopedic Surgery, Ningbo No.6 Hospital, Ningbo city, Zhejiang Province, China
| | - Yiji Tu
- Orthopedic Surgery, Ningbo No.6 Hospital, Ningbo city, Zhejiang Province, China
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Suardi V, Baroni D, Shahein AHA, Morena V, Logoluso N, Mangiavini L, Pellegrini AV. Microbiology of Prosthetic Joint Infections: A Retrospective Study of an Italian Orthopaedic Hospital. Antibiotics (Basel) 2024; 13:399. [PMID: 38786128 PMCID: PMC11117340 DOI: 10.3390/antibiotics13050399] [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: 03/05/2024] [Revised: 04/22/2024] [Accepted: 04/25/2024] [Indexed: 05/25/2024] Open
Abstract
The most frequent cause of periprosthetic infections (PJIs) is intraoperative contamination; hence, antibiotic prophylaxis plays a crucial role in prevention. Modifications to standard prophylaxis can be considered if there is a high incidence of microorganisms resistant to current protocols. To date, very few studies regarding microbial etiology have been published in Italy. In this single-center, retrospective study conducted at IRCCS Ospedale Galeazzi-Sant'Ambrogio in Milan, we analyzed hip, knee, and shoulder PJIs in patients undergoing first implantation between 1 January 17 and 31 December 2021. The primary aim was to derive a local microbiological case history. The secondary aim was to evaluate the adequacy of preoperative antibiotic prophylaxis in relation to the identified bacteria. A total of 57 PJIs and 65 pathogens were identified: 16 S. aureus, 15 S. epidermidis, and 10 other coagulase-negative staphylococci (CoNS), which accounted for 63% of the isolations. A total of 86.7% of S. epidermidis were methicillin-resistant (MRSE). In line with other case reports, we found a predominance of staphylococcal infections, with a lower percentage of MRSA than the Italian average, while we found a high percentage of MRSE. We estimated that 44.6% of the bacteria isolated were resistant to cefazolin, our standard prophylaxis. These PJIs could be prevented by using glycopeptide alone or in combination with cefazolin, but the literature reports conflicting results regarding the adequacy of such prophylaxis. In conclusion, our study showed that in our local hospital, our standard antibiotic prophylaxis is ineffective for almost half of the cases, highlighting the importance of defining specific antibiotic guidelines based on the local bacterial prevalence of each institution.
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Affiliation(s)
- Virginia Suardi
- IRCCS Ospedale Galeazzi–Sant’Ambrogio, 20157 Milan, Italy; (V.S.); (N.L.); (A.V.P.)
| | - Daniele Baroni
- Department of Orthopedics and Traumatology, Alessandro Manzoni Hospital, 23900 Lecco, Italy;
| | | | - Valentina Morena
- Infectious Disease Unit, Alessandro Manzoni Hospital, 23900 Lecco, Italy;
| | - Nicola Logoluso
- IRCCS Ospedale Galeazzi–Sant’Ambrogio, 20157 Milan, Italy; (V.S.); (N.L.); (A.V.P.)
| | - Laura Mangiavini
- IRCCS Ospedale Galeazzi–Sant’Ambrogio, 20157 Milan, Italy; (V.S.); (N.L.); (A.V.P.)
- Department of Biomedical Sciences for Health, University of Milan, 20133 Milan, Italy
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14
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Mehraj I, Hamid A, Gani U, Iralu N, Manzoor T, Saleem Bhat S. Combating Antimicrobial Resistance by Employing Antimicrobial Peptides: Immunomodulators and Therapeutic Agents against Infectious Diseases. ACS APPLIED BIO MATERIALS 2024; 7:2023-2035. [PMID: 38533844 DOI: 10.1021/acsabm.3c01104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
The rising prevalence of multiple-drug-resistant pathogens poses a formidable challenge to conventional antimicrobial treatments. The inability of potent antibiotics to combat these "superbugs" underscores the pressing need for alternative therapeutic agents. Antimicrobial peptides (AMPs) represent an alternative class of antibiotics. AMPs are essential immunomodulatory molecules that are found in various organisms. They play a pivotal role in managing microbial ecosystems and bolstering innate immunity by targeting and eliminating invading microorganisms. AMPs also have applications in the agriculture sector by combating animal as well as plant pathogens. AMPs can be exploited for the targeted therapy of various diseases and can also be used in drug-delivery systems. They can be used in synergy with current treatments like antibiotics and can potentially lead to a lower required dosage. AMPs also have huge potential in wound healing and regenerative medicine. Developing AMP-based strategies with improved safety, specificity, and efficacy is crucial in the battle against alarming global microbial resistance. This review will explore AMPs' increasing applicability, their mode of antimicrobial activity, and various delivery systems enhancing their stability and efficacy.
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Affiliation(s)
- Insha Mehraj
- Division of Animal Biotechnology, Faculty of Veterinary Sciences and Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar, Jammu and Kashmir 05466, India
| | - Aflaq Hamid
- Department of Plant Pathology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar, Jammu and Kashmir 05466, India
| | - Ubaid Gani
- Division of Animal Biotechnology, Faculty of Veterinary Sciences and Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar, Jammu and Kashmir 05466, India
| | - Nulevino Iralu
- Department of Plant Pathology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar, Jammu and Kashmir 05466, India
| | - Tasaduq Manzoor
- Division of Animal Biotechnology, Faculty of Veterinary Sciences and Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar, Jammu and Kashmir 05466, India
| | - Sahar Saleem Bhat
- Division of Animal Biotechnology, Faculty of Veterinary Sciences and Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar, Jammu and Kashmir 05466, India
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Srivastava A, Verma N, Kumar V, Apoorva P, Agarwal V. Biofilm inhibition/eradication: exploring strategies and confronting challenges in combatting biofilm. Arch Microbiol 2024; 206:212. [PMID: 38616221 DOI: 10.1007/s00203-024-03938-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 03/04/2024] [Accepted: 03/20/2024] [Indexed: 04/16/2024]
Abstract
Biofilms are complex communities of microorganisms enclosed in a self-produced extracellular matrix, posing a significant threat to different sectors, including healthcare and industry. This review provides an overview of the challenges faced due to biofilm formation and different novel strategies that can combat biofilm formation. Bacteria inside the biofilm exhibit increased resistance against different antimicrobial agents, including conventional antibiotics, which can lead to severe problems in livestock and animals, including humans. In addition, biofilm formation also imposes heavy economic pressure on industries. Hence it becomes necessary to explore newer alternatives to eradicate biofilms effectively without applying selection pressure on the bacteria. Excessive usage of antibiotics may also lead to an increase in the number of resistant strains as bacteria employ an advanced antimicrobial resistance mechanism. This review provides insight into multifaceted technologies like quorum sensing inhibition, enzymes, antimicrobial peptides, bacteriophage, phytocompounds, and nanotechnology to neutralize biofilms without developing antimicrobial resistance (AMR). Furthermore, it will pave the way for developing newer therapeutic agents to deal with biofilms more efficiently.
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Affiliation(s)
- Anmol Srivastava
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Prayagraj, 211004, Uttar Pradesh, India
| | - Nidhi Verma
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Prayagraj, 211004, Uttar Pradesh, India
| | - Vivek Kumar
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Prayagraj, 211004, Uttar Pradesh, India
| | - Pragati Apoorva
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Prayagraj, 211004, Uttar Pradesh, India
| | - Vishnu Agarwal
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Prayagraj, 211004, Uttar Pradesh, India.
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16
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Ghosh Moulic A, Deshmukh P, Gaurkar SS. A Comprehensive Review on Biofilms in Otorhinolaryngology: Understanding the Pathogenesis, Diagnosis, and Treatment Strategies. Cureus 2024; 16:e57634. [PMID: 38707023 PMCID: PMC11070220 DOI: 10.7759/cureus.57634] [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: 03/18/2024] [Accepted: 04/04/2024] [Indexed: 05/07/2024] Open
Abstract
Biofilms, structured communities of microorganisms encased in a self-produced matrix, pose significant challenges in otorhinolaryngology due to their role in chronic and recurrent infections affecting the ear, nose, and throat (ENT) region. This review provides an overview of biofilms, emphasizing their formation, pathogenesis, diagnosis, and treatment strategies in otorhinolaryngological disorders. Biofilms are pivotal in chronic rhinosinusitis (CRS), otitis media, laryngopharyngeal reflux (LPR), and tonsillitis, contributing to treatment resistance and disease recurrence. Current diagnostic techniques, including imaging modalities, microbiological cultures, and molecular techniques, are discussed, alongside emerging technologies. Treatment strategies, ranging from conventional antibiotics to alternative therapies, such as biofilm disruptors, phage therapy, and immunomodulation, are evaluated in terms of their efficacy and potential clinical applications. The review underscores the significance of understanding biofilms in otorhinolaryngology and highlights the need for tailored approaches to diagnosis and management to improve patient outcomes.
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Affiliation(s)
- Ayushi Ghosh Moulic
- Otorhinolaryngology, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education & Research, Wardha, IND
| | - Prasad Deshmukh
- Otorhinolaryngology, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education & Research, Wardha, IND
| | - Sagar S Gaurkar
- Otorhinolaryngology, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education & Research, Wardha, IND
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17
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Zhao R, Du B, Luo Y, Xue F, Wang H, Qu D, Han S, Heilbronner S, Zhao Y. Antimicrobial and anti-biofilm activity of a thiazolidinone derivative against Staphylococcus aureus in vitro and in vivo. Microbiol Spectr 2024; 12:e0232723. [PMID: 38329365 PMCID: PMC10913468 DOI: 10.1128/spectrum.02327-23] [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: 06/04/2023] [Accepted: 01/11/2024] [Indexed: 02/09/2024] Open
Abstract
Staphylococcus aureus (S. aureus) causes many infections with significant morbidity and mortality. S. aureus can form biofilms, which can cause biofilm-associated diseases and increase resistance to many conventional antibiotics, resulting in chronic infection. It is critical to develop novel antibiotics against staphylococcal infections, particularly those that can kill cells embedded in biofilms. This study aimed to investigate the bacteriocidal and anti-biofilm activities of thiazolidinone derivative (TD-H2-A) against S. aureus. A total of 40 non-duplicate strains were collected, and the minimum inhibitory concentrations (MICs) of TD-H2-A were determined. The effect of TD-H2-A on established S. aureus mature biofilms was examined using a confocal laser scanning microscope (CLSM). The antibacterial effects of the compound on planktonic bacteria and bacteria in mature biofilms were investigated. Other characteristics, such as cytotoxicity and hemolytic activity, were researched. A mouse skin infection model was used, and a routine hematoxylin and eosin (H&E) staining was used for histological examination. The MIC values of TD-H2-A against the different S. aureus strains were 6.3-25.0 µg/mL. The 5 × MIC TD-H2-A killed almost all planktonic S. aureus USA300. The derivative was found to have strong bacteriocidal activity against cells in mature biofilms meanwhile having low cytotoxicity and hemolytic activity against Vero cells and human erythrocytes. TD-H2-A had a good bacteriocidal effect on S. aureus SA113-infected mice. In conclusion, TD-H2-A demonstrated good bacteriocidal and anti-biofilm activities against S. aureus, paving the way for the development of novel agents to combat biofilm infections and multidrug-resistant staphylococcal infections.IMPORTANCEStaphylococcus aureus, a notorious pathogen, can form a stubborn biofilm and develop drug resistance. It is crucial to develop new anti-infective therapies against biofilm-associated infections. The manuscript describes the new antibiotic to effectively combat multidrug-resistant and biofilm-associated diseases.
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Affiliation(s)
- Rui Zhao
- Laboratory Medicine Center, The Second Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Bingyu Du
- Laboratory Medicine Center, The Second Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Yue Luo
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Fen Xue
- Laboratory Medicine Center, The Second Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Huanhuan Wang
- Department of Microbial Genetics, Interfaculty Institute of Microbiology and Infection Medicine, University of Tübingen, Tübingen, Germany
| | - Di Qu
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS) School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Shiqing Han
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Simon Heilbronner
- Department of Infection Biology, Interfaculty Institute of Microbiology and Infection Medicine, University of Tübingen, Tübingen, Germany
| | - Yanfeng Zhao
- Laboratory Medicine Center, The Second Affiliated Hospital, Nanjing Medical University, Nanjing, China
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Gutierrez-Gongora D, Woods M, Prosser RS, Geddes-McAlister J. Natural compounds from freshwater mussels disrupt fungal virulence determinants and influence fluconazole susceptibility in the presence of macrophages in Cryptococcus neoformans. Microbiol Spectr 2024; 12:e0284123. [PMID: 38329361 PMCID: PMC10913472 DOI: 10.1128/spectrum.02841-23] [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: 07/12/2023] [Accepted: 01/12/2024] [Indexed: 02/09/2024] Open
Abstract
Cryptococcus neoformans is a human fungal pathogen responsible for fatal infections, especially in patients with a depressed immune system. Overexposure to antifungal drugs due to prolonged treatment regimens and structure-similar applications in agriculture have weakened the efficacy of current antifungals in the clinic. The rapid evolution of antifungal resistance urges the discovery of new compounds that inhibit fungal virulence determinants, rather than directly killing the pathogen, as alternative strategies to overcome disease and reduce selective pressure toward resistance. Here, we evaluated the efficacy of freshwater mussel extracts (crude and clarified) against the production of well-defined virulence determinants (i.e., thermotolerance, melanin, capsule, and biofilm) and fluconazole resistance in C. neoformans. We demonstrated the extracts' influence on fungal thermotolerance, capsule production, and biofilm formation, as well as susceptibility to fluconazole in the presence of macrophages. Additionally, we measured the inhibitory activity of extracts against commercial peptidases (family representatives of cryptococcal orthologs) related to fungal virulence determinants and fluconazole resistance, and integrated these phenotypic findings with quantitative proteomics profiling. Our approach defined distinct signatures of each treatment and validated a new mechanism of anti-virulence action toward the polysaccharide capsule from a selected extract following fractionation. By understanding the mechanisms driving the antifungal activity of mussels, we may develop innovative treatment options to overcome fungal infections and promote susceptibility to fluconazole in resistant strains. IMPORTANCE As the prevalence and severity of global fungal infections rise, along with an increasing incidence of antifungal resistance, new strategies to combat fungal pathogens and overcome resistance are urgently needed. Critically, our current methods to overcome fungal infections are limited and drive the evolution of resistance forward; however, an anti-virulence approach to disarm virulence factors of the pathogen and promote host cell clearance is promising. Here, we explore the efficacy of natural compounds derived from freshwater mussels against classical fungal virulence determinants, including thermotolerance, capsule production, stress response, and biofilm formation. We integrate our phenotypic discoveries with state-of-the-art mass spectrometry-based proteomics to identify mechanistic drivers of these antifungal properties and propose innovative avenues to reduce infection and support the treatment of resistant strains.
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Affiliation(s)
| | - Michael Woods
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario, Canada
| | - Ryan S. Prosser
- School of Environmental Sciences, University of Guelph, Guelph, Ontario, Canada
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Zhang GL, Wang ZC, Li CP, Chen DP, Li ZR, Li Y, Ouyang GP. Discovery of tryptanthrin analogues bearing F and piperazine moieties as novel phytopathogenic antibacterial and antiviral agents. PEST MANAGEMENT SCIENCE 2024; 80:1026-1038. [PMID: 37842924 DOI: 10.1002/ps.7834] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 10/08/2023] [Accepted: 10/11/2023] [Indexed: 10/17/2023]
Abstract
BACKGROUND Plant bacterial infections and plant viruses seriously affect the yield and quality of crops. Based on the various activities of tryptanthrin, a series of tryptanthrin analogues bearing F and piperazine moieties were designed, synthesized, and evaluated for their biological activities against three plant bacteria and tobacco mosaic virus (TMV). RESULTS Bioassay results indicated that compounds 6a-6l displayed excellent antibacterial activities in vitro and 6a-6c and 6g exhibited better antiviral activities against TMV than commercial ribavirin. In particular, 6b showed the most effect on Xanthomonas oryzae pv. oryzae (Xoo) with a half-maximal effective concentration (EC50 ) of 1.26 μg mL-1 , compared with the commercial pesticide bismerthiazol (BT; EC50 = 34.3 μg mL-1 ) and thiodiazole copper (TC; EC50 = 73.3 μg mL-1 ). Meanwhile, 6a also had the best antiviral activity at 500 μg mL-1 for curative, protection, and inactivation purposes, compared with ribavirin in vivo. CONCLUSION Compound 6b could cause changes in bacterial morphology, induce the accumulation of reactive oxygen species, promote apoptosis of bacterial cells, inhibit the formation of biofilm, and block the growth of Xoo cells. Proteomic analysis revealed major differences in the bacterial secretory system pathways T2SS and T6SS, which inhibited membrane transport. Molecular docking revealed that 6a and 6g could interact with TMV coat protein preventing virus assembly. These results suggest that tryptanthrin analogues bearing F and piperazine moieties could be promising candidate agents for antibacterial and antiviral use in agricultural production. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Guang-Long Zhang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Zhen-Chao Wang
- School of Pharmaceutical Sciences, Guizhou University, Guiyang, China
| | - Cheng-Peng Li
- School of Pharmaceutical Sciences, Guizhou University, Guiyang, China
| | - Dan-Ping Chen
- School of Pharmaceutical Sciences, Guizhou University, Guiyang, China
| | - Zhu-Rui Li
- School of Pharmaceutical Sciences, Guizhou University, Guiyang, China
| | - Yan Li
- School of Pharmaceutical Sciences, Guizhou University, Guiyang, China
| | - Gui-Ping Ouyang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
- School of Pharmaceutical Sciences, Guizhou University, Guiyang, China
- Guizhou Engineering Laboratory for Synthetic Drugs, Guizhou University, Guiyang, China
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20
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Barua M, Bandyopadhyay S, Wasai A, Ghosh M, Roy I, Ghosh P, Koner S, Rizzoli C, Roy A, Saha S, Mandal S. A trinuclear Zn (II) schiff base dicyanamide complex attenuates bacterial biofilm formation by ROS generation and membrane damage and exhibits anticancer activity. Microb Pathog 2024; 188:106548. [PMID: 38262493 DOI: 10.1016/j.micpath.2024.106548] [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: 10/27/2023] [Revised: 01/12/2024] [Accepted: 01/15/2024] [Indexed: 01/25/2024]
Abstract
A trinuclear Zn (II) complex, [(ZnL{N(CN)2})2Zn], termed complex 1 has been synthesized by the reaction of an aqueous solution of sodium dicyanamide to the methanolic solution of Zn (CH3COO)2, 2H2O and corresponding Schiff base (H2L) which is derived from 1:2 condensation of 1, 4 butane diamine with 3-ethoxy salicylaldehyde. Complex 1 is characterized by elemental analysis, IR, UV and Single X-ray diffraction study. Drug resistance is a growing global public health concern that has prompted researchers to look into advanced alternative treatment modalities. In this context, complex 1 has shown promising antibacterial and antibiofilm efficacy against gram-positive Staphylococcus aureus and Methicillin-resistant Staphylococcus aureus strains. Complex 1 attenuated Staphylococcal biofilm formation by reducing several virulence factors including the formation of extracellular polysaccharide matrix, slime, haemolysin, staphyloxanthin, auto-aggregation, cell surface hydrophobicity, and motility. Notably, complex 1 mechanistically potentiated Reactive Oxygen Species (ROS) generation within the bacterial cells, leading to the damage of bacterial cell membrane followed by DNA leakage and thereby impeding the growth of Staphylococcus aureus. Furthermore, complex 1 significantly exhibited anticancer activity by reducing the growth of prostate adenocarcinoma cells. It obstructed the migration of cancer cells by potentiating apoptosis and arresting the cell cycle at the G2/M phase. In summary, complex 1 could act as a potent candidate for the generation of novel antibacterial, antibiofilm as well as anticancer treatment regimens for the management of drug-resistant biofilm-mediated Staphylococcus aureus infection and lethal prostate malignancy.
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Affiliation(s)
- Mamata Barua
- Department of Chemistry, Acharya Prafulla Chandra College, New Barrackpore, Kolkata, 700131, India
| | - Shrabasti Bandyopadhyay
- Department of Microbiology, University of Kalyani, Kalyani, Kalyani, 741235, West Bengal, India
| | - Abdul Wasai
- Amity Institute of Molecular Medicine and Stem Cell Research, Amity University Noida, J3 Block, Room 111, Sector 125, Noida, 201303, UP, India
| | - Mrinmoy Ghosh
- Department of Chemistry, Acharya Prafulla Chandra College, New Barrackpore, Kolkata, 700131, India
| | - Indrani Roy
- Department of Chemistry, Acharya Prafulla Chandra College, New Barrackpore, Kolkata, 700131, India
| | - Pameli Ghosh
- Department of Chemistry, Jadavpur University, Kolkata, 700032, India
| | - Subratanath Koner
- Department of Chemistry, Jadavpur University, Kolkata, 700032, India
| | - Corrado Rizzoli
- Universita' degli Studi di Parma, Dipartimento S.C.V.S.A., Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Adhiraj Roy
- Amity Institute of Molecular Medicine and Stem Cell Research, Amity University Noida, J3 Block, Room 111, Sector 125, Noida, 201303, UP, India.
| | - Sandip Saha
- Department of Chemistry, Acharya Prafulla Chandra College, New Barrackpore, Kolkata, 700131, India.
| | - Supratim Mandal
- Department of Microbiology, University of Kalyani, Kalyani, Kalyani, 741235, West Bengal, India.
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Kameswaran S, Gujjala S, Zhang S, Kondeti S, Mahalingam S, Bangeppagari M, Bellemkonda R. Quenching and quorum sensing in bacterial bio-films. Res Microbiol 2024; 175:104085. [PMID: 37268165 DOI: 10.1016/j.resmic.2023.104085] [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: 03/31/2023] [Revised: 05/24/2023] [Accepted: 05/25/2023] [Indexed: 06/04/2023]
Abstract
Quorum sensing (QS) is the ability of bacteria to monitor their population density and adjust gene expression accordingly. QS-regulated processes include host-microbe interactions, horizontal gene transfer, and multicellular behaviours (such as the growth and development of biofilm). The creation, transfer, and perception of bacterial chemicals known as autoinducers or QS signals are necessary for QS signalling (e.g. N-acylhomoserine lactones). Quorum quenching (QQ), another name for the disruption of QS signalling, comprises a wide range of events and mechanisms that are described and analysed in this study. In order to better comprehend the targets of the QQ phenomena that organisms have naturally developed and are currently being actively researched from practical perspectives, we first surveyed the diversity of QS-signals and QS-associated responses. Next, the mechanisms, molecular players, and targets related to QS interference are discussed, with a focus on natural QQ enzymes and compounds that function as QS inhibitors. To illustrate the processes and biological functions of QS inhibition in microbe-microbe and host-microbe interactions, a few QQ paradigms are described in detail. Finally, certain QQ techniques are offered as potential instruments in a variety of industries, including agriculture, medical, aquaculture, crop production, and anti-biofouling areas.
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Affiliation(s)
- Srinivasan Kameswaran
- Department of Botany, Vikrama Simhapuri University College, Kavali, Andhra Pradesh, India
| | - Sudhakara Gujjala
- Department of Biochemistry, Sri Krishnadevaray a University, Ananthapuram, Andhra Pradesh, India
| | - Shaoqing Zhang
- School of Chemistry and Civil Engineering, Shaoguan University, Shaoguan, 512005, PR China
| | - Suresh Kondeti
- Multi-Disciplinary Research Unit, Nizam's Institute of Medical Sciences, Hyderabad, 500082, India
| | - Sundararajan Mahalingam
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Manjunatha Bangeppagari
- Department of Cell Biology & Molecular Genetics, Sri Devaraj Urs Academy of Higher Education and Research (Deemed to Be University), Tamaka, Kolar, 563103, Karnataka, India
| | - Ramesh Bellemkonda
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA.
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22
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Rasgania J, Gavadia R, Sahu N, Sharma P, Chauhan NS, Saharan V, Kapoor RK, Jakhar K. Design, synthesis and exploration of novel triazinoindoles as potent quorum-sensing inhibitors and radical quenchers. Future Med Chem 2024; 16:399-416. [PMID: 38375563 DOI: 10.4155/fmc-2023-0313] [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: 10/27/2023] [Accepted: 01/22/2024] [Indexed: 02/21/2024] Open
Abstract
Background: Antimicrobial resistance has become a critical health concern, and quorum-sensing exacerbates the resistance by facilitating cell-to-cell communication within the microbial community, leading to severe pathogenic outbreaks. Methods & results: Novel 1-(2-((5H-[1,2,4]-triazino[5,6-b]indol-3-yl)thio)acetyl)indoline-2,3-diones were synthesized. The title compounds exhibit outstanding anti-quorum-sensing efficacy, and compound 7g demonstrated the maximum proficiency (IC50 = 0.0504 μg/ml). The hybrids displayed potent antioxidant action, and compound 7c showed the highest antioxidant ability (IC50 = 40.71 μg/ml). Molecular docking of the isatin hybrids against DNA gyrase and quorum-sensing receptor CviR validated the observed in vitro findings. The befitting pharmacokinetic profile of the synthesized drug candidates was ascertained through absorption, distribution, metabolism, excretion and toxicity screening. Conclusion: The remarkable biocompetence of the synthesized triazinoindoles may help to combat drug-resistant infections.
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Affiliation(s)
- Jyoti Rasgania
- Department of Chemistry, M. D. University, Rohtak, 124001, Haryana, India
| | - Renu Gavadia
- Department of Chemistry, M. D. University, Rohtak, 124001, Haryana, India
| | - Neetu Sahu
- Department of Chemistry, M. D. University, Rohtak, 124001, Haryana, India
| | - Pinki Sharma
- Department of Biochemistry, M. D. University, Rohtak, 124001, Haryana, India
| | - Nar S Chauhan
- Department of Biochemistry, M. D. University, Rohtak, 124001, Haryana, India
| | - Vicky Saharan
- Department of Microbiology, M. D. University, Rohtak, 124001, Haryana, India
| | - Rajeev K Kapoor
- Department of Microbiology, M. D. University, Rohtak, 124001, Haryana, India
| | - Komal Jakhar
- Department of Chemistry, M. D. University, Rohtak, 124001, Haryana, India
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23
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El Naggar NM, Shawky RM, Serry FME, Emara M. Investigating the relationship between carbapenemase production and biofilm formation in Klebsiella pneumoniae clinical isolates. BMC Res Notes 2024; 17:49. [PMID: 38360658 PMCID: PMC10870607 DOI: 10.1186/s13104-024-06708-9] [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: 11/12/2023] [Accepted: 01/26/2024] [Indexed: 02/17/2024] Open
Abstract
OBJECTIVE Carbapenemase production and biofilm formation in K. pneumoniae are crucial factors influencing the pathogenicity and antibiotic resistance of this bacterium. This study investigated the interplay between carbapenemase production and biofilm formation in K. pneumoniae clinical isolates. RESULTS The distribution of biofilm-forming ability significantly differed between carbapenemase-producing (CP-Kp) (n = 52) isolates and carbapenemase-nonproducing (CN-Kp) isolates (n = 37), suggesting a potential link between carbapenemase production and biofilm formation. All the blaNDM-1-harbouring isolates demonstrated biofilm formation, with varying levels classified as strong (33.33%), moderate (22.22%), or weak (44.45%). blaNDM-1 and blaKPC-coharbouring isolates did not exhibit strong or moderate biofilm formation. blaNDM-1 and blaOXA-48-coharbouring isolates were predominantly moderate (48.65%), followed by weak (32.43%), with none showing strong biofilm production. These findings suggest a correlation between the presence of carbapenemases and biofilm-forming ability; however, the heterogeneity in biofilm-forming abilities associated with different carbapenemase types and the absence of strong biofilm producers in the detected carbapenemase combinations prompt a closer look at the complex regulatory mechanisms governing biofilm formation in CP-Kp isolates.
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Affiliation(s)
- Nora M El Naggar
- Faculty of Pharmacy, Department of Microbiology and Immunology, Helwan University, POX 11795, Ain Helwan, Cairo, Egypt
| | - Riham M Shawky
- Faculty of Pharmacy, Department of Microbiology and Immunology, Helwan University, POX 11795, Ain Helwan, Cairo, Egypt
| | - Fathy M E Serry
- Faculty of Pharmacy, Department of Pharmaceutical Microbiology, Zagazig University, Zagazig, Egypt
| | - Mohamed Emara
- Faculty of Pharmacy, Department of Microbiology and Immunology, Helwan University, POX 11795, Ain Helwan, Cairo, Egypt.
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24
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Zafer MM, Mohamed GA, Ibrahim SRM, Ghosh S, Bornman C, Elfaky MA. Biofilm-mediated infections by multidrug-resistant microbes: a comprehensive exploration and forward perspectives. Arch Microbiol 2024; 206:101. [PMID: 38353831 PMCID: PMC10867068 DOI: 10.1007/s00203-023-03826-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 12/30/2023] [Indexed: 02/16/2024]
Abstract
A biofilm is a collection of microorganisms organized in a matrix of extracellular polymeric material. Biofilms consist of microbial cells that attach to both surfaces and each other, whether they are living or non-living. These microbial biofilms can lead to hospital-acquired infections and are generally detrimental. They possess the ability to resist the human immune system and antibiotics. The National Institute of Health (NIH) states that biofilm formation is associated with 65% of all microbial illnesses and 80% of chronic illnesses. Additionally, non-device-related microbial biofilm infections include conditions like cystic fibrosis, otitis media, infective endocarditis, and chronic inflammatory disorders. This review aims to provide an overview of research on chronic infections caused by microbial biofilms, methods used for biofilm detection, recent approaches to combat biofilms, and future perspectives, including the development of innovative antimicrobial strategies such as antimicrobial peptides, bacteriophages, and agents that disrupt biofilms.
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Affiliation(s)
- Mai M Zafer
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ahram Canadian University, Cairo, Egypt.
| | - Gamal A Mohamed
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, 21589, Jeddah, Saudi Arabia
| | - Sabrin R M Ibrahim
- Department of Chemistry, Preparatory Year Program, Batterjee Medical College, 21442, Jeddah, Saudi Arabia
- Department of Pharmacognosy, Faculty of Pharmacy, Assiut University, Assiut, 71526, Egypt
| | - Soumya Ghosh
- Natural and Medical Science Research Center, University of Nizwa, Nizwa, 616, Oman
| | - Charné Bornman
- Department of Engineering Sciences, Faculty of Natural and Agricultural Sciences, University of the Free State, Bloemfontein, 9301, South Africa
| | - Mahmoud A Elfaky
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, 21589, Jeddah, Saudi Arabia.
- Center for Artificial Intelligence in Precision Medicine, King Abdulaziz University, 21589, Jeddah, Saudi Arabia.
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25
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Alves de Melo Fernandes T, Rafaella Costa T, de Paula Menezes R, Arantes de Souza M, Gomes Martins CH, Junior NN, Gobbi Amorim F, Quinton L, Polloni L, Teixeira SC, Amália Vieira Ferro E, Soares AM, de Melo Rodrigues Ávila V. Bothrops snake venom L-amino acid oxidases impair biofilm formation of clinically relevant bacteria. Toxicon 2024; 238:107569. [PMID: 38122835 DOI: 10.1016/j.toxicon.2023.107569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 12/13/2023] [Accepted: 12/14/2023] [Indexed: 12/23/2023]
Abstract
The present work addressed the abilities of two L-amino acid oxidases isolated from Bothrops moojeni (BmooLAAO-I) and Bothrops jararacussu (BjussuLAAO-II) snake venoms to control the growth and prevent the biofilm formation of clinically relevant bacterial pathogens. Upon S. aureus (ATCC BAA44) and S. aureus (clinical isolates), BmooLAAO-I (MIC = 0.12 and 0.24 μg/mL, respectively) and BjussuLAAO-II (MIC = 0.15 μg/mL) showed a potent bacteriostatic effect. Against E. coli (ATCC BAA198) and E. coli (clinical isolates), BmooLAAO-I (MIC = 15.6 and 62.5 μg/mL, respectively) and BjussuLAAO-II (MIC = 4.88 and 9.76 μg/mL, respectively) presented a lower extent effect. Also, BmooLAAO-I (MICB50 = 0.195 μg/mL) and BjussuLAAO-II (MICB50 = 0.39 μg/mL) inhibited the biofilm formation of S. aureus (clinical isolates) in 88% and 89%, respectively, and in 89% and 53% of E. coli (clinical isolates). Moreover, scanning electron microscopy confirmed that the toxins affected bacterial morphology by increasing the roughness of the cell surface and inhibited the biofilm formation. Furthermore, analysis of the tridimensional structures of the toxins showed that the surface-charge distribution presents a remarkable positive region close to the glycosylation motif, which is more pronounced in BmooLAAO-I than BjussuLAAO-II. This region may assist the interaction with bacterial and biofilm surfaces. Collectively, our findings propose that venom-derived antibiofilm agents are promising biotechnological tools which could provide novel strategies for biofilm-associated infections.
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Affiliation(s)
- Thales Alves de Melo Fernandes
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Tássia Rafaella Costa
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Ralciane de Paula Menezes
- Laboratory of Antimicrobial Testing, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Meliza Arantes de Souza
- Laboratory of Antimicrobial Testing, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Carlos Henrique Gomes Martins
- Laboratory of Antimicrobial Testing, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Nilson Nicolau Junior
- Laboratory of Molecular Modeling, Institute of Biotechnology, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | | | - Loïc Quinton
- Mass Spectrometry Laboratory, MolSys RU, University of Liège, 4000 Liège, Belgium
| | - Lorena Polloni
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Samuel Cota Teixeira
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Science, Federal University of Uberlândia, MG, Brazil
| | - Eloisa Amália Vieira Ferro
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Science, Federal University of Uberlândia, MG, Brazil
| | - Andreimar Martins Soares
- Laboratory of Biotechnology of Proteins and Bioactive Compounds in the Western Amazon (LABIOPROT), Oswaldo Cruz Foundation, FIOCRUZ Rondônia, Federal University of Rondônia (UNIR), And National Institute of Science and Technology of Epidemiology of the Western Amazon, INCT-EPIAMO, Porto Velho-RO, Brazil
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26
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Chen Z, Xing F, Yu P, Zhou Y, Luo R, Liu M, Ritz U. Metal-organic framework-based advanced therapeutic tools for antimicrobial applications. Acta Biomater 2024; 175:27-54. [PMID: 38110135 DOI: 10.1016/j.actbio.2023.12.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/20/2023] [Accepted: 12/13/2023] [Indexed: 12/20/2023]
Abstract
The escalating concern over conventional antibiotic resistance has emphasized the urgency in developing innovative antimicrobial agents. In recent times, metal-organic frameworks (MOFs) have garnered significant attention within the realm of antimicrobial research due to their multifaceted antimicrobial attributes, including the sustained release of intrinsic or exogenous antimicrobial components, chemodynamically catalyzed generation of reactive oxygen species (ROS), and formation of photogenerated ROS. This comprehensive review provides a thorough overview of the synthetic approaches employed in the production of MOF-based materials, elucidating their underlying antimicrobial mechanisms in depth. The focal point lies in elucidating the research advancements across various antimicrobial modalities, encompassing intrinsic component release system, extraneous component release system, auto-catalytical system, and energy conversion system. Additionally, the progress of MOF-based antimicrobial materials in addressing wound infections, osteomyelitis, and periodontitis is meticulously elucidated, culminating in a summary of the challenges and potential opportunities inherent within the realm of antimicrobial applications for MOF-based materials. STATEMENT OF SIGNIFICANCE: Growing concerns about conventional antibiotic resistance emphasized the need for alternative antimicrobial solutions. Metal-organic frameworks (MOFs) have gained significant attention in antimicrobial research due to their diverse attributes like sustained antimicrobial components release, catalytic generation of reactive oxygen species (ROS), and photogenerated ROS. This review covers MOF synthesis and their antimicrobial mechanisms. It explores advancements in intrinsic and extraneous component release, auto-catalysis, and energy conversion systems. The paper also discusses MOF-based materials' progress in addressing wound infections, osteomyelitis, and periodontitis, along with existing challenges and opportunities. Given the lack of related reviews, our findings hold promise for future MOF applications in antibacterial research, making it relevant to your journal's readership.
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Affiliation(s)
- Zhao Chen
- Department of Orthopedic Surgery, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Fei Xing
- Department of Orthopedic Surgery, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Peiyun Yu
- LIMES Institute, Department of Molecular Brain Physiology and Behavior, University of Bonn, Carl-Troll-Str. 31, 53115 Bonn, Germany
| | - Yuxi Zhou
- Department of Periodontology, Justus-Liebig-University of Giessen, Germany
| | - Rong Luo
- Department of Orthopedic Surgery, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Ming Liu
- Department of Orthopedic Surgery, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China.
| | - Ulrike Ritz
- Department of Orthopaedics and Traumatology, Biomatics Group, University Medical Center of the Johannes Gutenberg University, Langenbeckstr. 1, 55131 Mainz, Germany.
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27
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Ling X, Liu X, Wang K, Guo M, Ou Y, Li D, Xiang Y, Zheng J, Hu L, Zhang H, Li W. Lsr2 acts as a cyclic di-GMP receptor that promotes keto-mycolic acid synthesis and biofilm formation in mycobacteria. Nat Commun 2024; 15:695. [PMID: 38267428 PMCID: PMC10808224 DOI: 10.1038/s41467-024-44774-6] [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: 05/29/2023] [Accepted: 01/03/2024] [Indexed: 01/26/2024] Open
Abstract
Cyclic di-GMP (c-di-GMP) is a second messenger that promotes biofilm formation in several bacterial species, but the mechanisms are often unclear. Here, we report that c-di-GMP promotes biofilm formation in mycobacteria in a manner dependent on the nucleoid-associated protein Lsr2. We show that c-di-GMP specifically binds to Lsr2 at a ratio of 1:1. Lsr2 upregulates the expression of HadD, a (3R)-hydroxyacyl-ACP dehydratase, thus promoting the synthesis of keto-mycolic acid and biofilm formation. Thus, Lsr2 acts as a c-di-GMP receptor that links the second messenger's function to lipid synthesis and biofilm formation in mycobacteria.
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Affiliation(s)
- Xiaocui Ling
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, 530004, China
| | - Xiao Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, 530004, China
| | - Kun Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, 530004, China
| | - Minhao Guo
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, 530004, China
| | - Yanzhe Ou
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, 530004, China
| | - Danting Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, 530004, China
| | - Yulin Xiang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, 530004, China
| | - Jiachen Zheng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, 530004, China
| | - Lihua Hu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, 530004, China
| | - Hongyun Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, 530004, China
| | - Weihui Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, 530004, China.
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28
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Naz F, Ahmad A, Sarwar Y, Khan MM, Schierack P, Rauf W, Ali A. Characterization of Salmonella enterica Biofilms and Antibiofilm Effect of Carvacrol and 2-Aminobenzimidazole. Foodborne Pathog Dis 2024; 21:52-60. [PMID: 37819687 DOI: 10.1089/fpd.2023.0044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023] Open
Abstract
Biofilm-associated foodborne Salmonella infections in poultry have become increasingly challenging for veterinarians, particularly in developing countries, and warrant thorough investigation. We assessed the biofilm-forming tendency of poultry isolates of Salmonella enterica, namely Salmonella Typhimurium (n = 23), Salmonella Infantis (n = 28), and Salmonella Heidelberg (n = 18), in nutrient-rich Rappaport-Vassiliadis Soya (RVS) peptone broth and nutrient-deficient diluted Tryptone Soya Broth (TSB). Seven of the tested isolates exhibited moderate biofilm formation in diluted TSB, whereas two showed such formation in RVS. In addition, the Congo red agar assay revealed curli and cellulose production in seven isolates. Fourteen specific biofilm-associated genes were analyzed identifying sdiA and seqA to be the most prevalent (100%), and glyA the least prevalent (69.5%). The prevalence of the genes bcsA and csgA was significantly lower in moderate and weak biofilm formers, respectively, as compared with nonbiofilm formers in RVS peptone broth. Furthermore, the compounds carvacrol and 2-aminobenzimidazole (2-ABI) effectively inhibited biofilm formation by Salmonella serovars in RVS peptone and TSB media, respectively. Whereas the antibiofilm activity of 2-ABI against Salmonella has not been reported previously, we determined its most effective concentration at 1.5 mM among tested antibiofilm treatments. These findings indicate that Salmonella strains prevalent in poultry farms have the potential to form biofilms, and the tested compounds should be further explored as supportive or alternative antimicrobials.
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Affiliation(s)
- Fizza Naz
- Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering College, Pakistan Institute of Engineering and Applied Sciences (NIBGE-C, PIEAS), Faisalabad, Pakistan
| | - Abrar Ahmad
- Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering College, Pakistan Institute of Engineering and Applied Sciences (NIBGE-C, PIEAS), Faisalabad, Pakistan
| | - Yasra Sarwar
- Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering College, Pakistan Institute of Engineering and Applied Sciences (NIBGE-C, PIEAS), Faisalabad, Pakistan
| | - Muhammad Moman Khan
- Faculty Environment and Natural Sciences, Institute of Biotechnology, Brandenburg University of Technology Cottbus-Senftenberg, Senftenberg, Germany
| | - Peter Schierack
- Faculty Environment and Natural Sciences, Institute of Biotechnology, Brandenburg University of Technology Cottbus-Senftenberg, Senftenberg, Germany
- Faculty of Health Sciences, Joint Faculty of the Brandenburg University of Technology Cottbus-Senftenberg, the Brandenburg Medical School Theodor Fontane and the University of Potsdam, Potsdam, Germany
| | - Waqar Rauf
- Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering College, Pakistan Institute of Engineering and Applied Sciences (NIBGE-C, PIEAS), Faisalabad, Pakistan
| | - Aamir Ali
- Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering College, Pakistan Institute of Engineering and Applied Sciences (NIBGE-C, PIEAS), Faisalabad, Pakistan
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29
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Can Karanlık C, Karanlık G, Özdemir S, Tollu G, Erdoğmuş A. Synthesis and characterization of novel BODIPYs and their antioxidant, antimicrobial, photodynamic antimicrobial, antibiofilm and DNA interaction activities. Photochem Photobiol 2024; 100:101-114. [PMID: 37317040 DOI: 10.1111/php.13825] [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: 04/13/2023] [Revised: 05/29/2023] [Accepted: 05/29/2023] [Indexed: 06/16/2023]
Abstract
In the current study, we synthesized and characterized new BODIPY derivatives (1-4) having pyridine or thienyl-pyridine substituents at meso- position and 4-dibenzothienyl or benzo[b]thien-2-yl moieties at 2-,6- positions. We investigated fluorescence properties and the ability to form singlet oxygen. In addition, various biological activities of BODIPYs such as DPPH scavenging, DNA binding/cleavage ability, cell viability inhibition, antimicrobial activity, antimicrobial photodynamic therapy (aPDT) and biofilm inhibition properties were performed. BODIPY derivatives BDPY-3 (3) and BDPY-4 (4) have high fluorescence quantum yields as 0.50 and 0.61 and 1 O2 quantum yields were calculated as 0.83 for BDPY-1 (1), 0.12 for BDPY-2 (2), 0.11 for BDPY-3 and 0.23 for BDPY-4. BODIPY derivatives BDPY-2, BDPY-3 and BDPY-4 displayed 92.54 ± 5.41%, 94.20 ± 5.50%, and 95.03 ± 5.54% antioxidant ability, respectively. BODIPY compounds showed excellent DNA chemical nuclease activity. BDPY-2, BDPY-3 and BDPY-4 also exhibited 100% APDT activity against E. coli at all tested concentrations. In addition to these, they demonstrated a highly effective biofilm inhibition activity against Staphyloccous aureus and Pseudomans aeruginosa. BDPY-4 showed the most effective antioxidant and DNA cleavage activity, while BDPY-3 exhibited the most effective antimicrobial and antibiofilm activity.
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Affiliation(s)
| | - Gürkan Karanlık
- Department of Chemistry, Yildiz Technical University, Istanbul, Turkey
| | - Sadin Özdemir
- Food Processing Programme, Technical Science Vocational School, Mersin University, Mersin, Turkey
| | - Gülşah Tollu
- Department of Laboratory and Veterinary Health, Technical Science Vocational School, Mersin University, Mersin, Turkey
| | - Ali Erdoğmuş
- Department of Chemistry, Yildiz Technical University, Istanbul, Turkey
- Health Biotechnology Joint Research and Application Center of Excellence, Istanbul, Turkey
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30
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Song Y, Sun M, Mu G, Tuo Y. Exopolysaccharide produced by Lactiplantibacillus plantarum Y12 exhibits inhibitory effect on the Shigella flexneri genes expression related to biofilm formation. Int J Biol Macromol 2023; 253:127048. [PMID: 37748596 DOI: 10.1016/j.ijbiomac.2023.127048] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 09/20/2023] [Accepted: 09/21/2023] [Indexed: 09/27/2023]
Abstract
Shigella is a specific enteric pathogen in humans, causing symptoms of bacterial dysentery. The biofilm formation of S. flexneri contributes to the emergence of multidrug resistance and facilitates the establishment of persistent chronic infections. This study investigated the regulatory effects of Lactiplantibacillus plantarum Y12 exopolysaccharide (L-EPS) on gene expression and its spatial hindrance effects in inhibiting the biofilm formation of S. flexneri. The transcriptome analysis revealed a significant impact of L-EPS on the gene expression profile of S. flexneri, with a total of 968 genes showing significant changes (507 up-regulated and 461 down-regulated). The significantly down-regulated KEGG metabolic pathway enriched in phosphotransferase system, Embden-Meyerhf-Parnas, Citrate cycle, Lipopolysaccharide biosynthesis, Cationic antimicrobial peptide resistance, Two-component system. Moreover, L-EPS significantly down-regulated the gene expression levels of fimbriae synthesis (fimF), lipopolysaccharide synthesis (lptE, lptB), anchor protein repeat domain (arpA), virulence factor (lpp, yqgB), antibiotic resistance (marR, cusB, mdtL, mdlB), heavy metal resistance (zraP), and polysaccharide synthesis (mtgA, mdoB, mdoC). The expression of biofilm regulator factor (bssS) and two-component system suppressor factor (mgrB) were significantly up-regulated. The RT-qPCR results indicated that a major component of L-EPS (L-EPS 2-1) exhibited the gene regulatory effect on the S. flexneri biofilm formation. Furthermore, electrophoresis and isothermal microtitration calorimetry demonstrated that the interaction between L-EPS 2-1 and eDNA is electrostatic dependent on the change in environmental pH, disrupting the stable spatial structure of S. flexneri biofilm. In conclusion, L-EPS inhibited the biofilm formation of S. flexneri through gene regulation and spatial obstruction effects.
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Affiliation(s)
- Yinglong Song
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China
| | - Mengying Sun
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China
| | - Guangqing Mu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China; Dalian Probiotics Function Research Key Laboratory, Dalian Polytechnic University, Dalian 116034, PR China.
| | - Yanfeng Tuo
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China.
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Tu Y, Ren H, He Y, Ying J, Chen Y. Interaction between microorganisms and dental material surfaces: general concepts and research progress. J Oral Microbiol 2023; 15:2196897. [PMID: 37035450 PMCID: PMC10078137 DOI: 10.1080/20002297.2023.2196897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023] Open
Abstract
Bacterial adhesion to dental materials’ surfaces is the initial cause of dental materials-related infections. Therefore, inhibiting bacterial adhesion is a critical step in preventing and controlling these infections. To this end, it is important to know how the properties of dental materials affect the interactions between microorganisms and material surfaces to produce materials without biological contamination. This manuscript reviews the mechanism of bacterial adhesion to dental materials, the relationships between their surface properties and bacterial adhesion, and the impact of bacterial adhesion on their surface properties. In addition, this paper summarizes how these surface properties impact oral biofilm formation and proposes designing intelligent dental material surfaces that can reduce biological contamination.
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Affiliation(s)
- Yan Tu
- Department of Endodontics, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, China
- Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Huaying Ren
- Department of Endodontics, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, China
- Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Yiwen He
- School of Stomatology, Zhejiang University School of Medicine, Hangzhou, China
| | - Jiaqi Ying
- School of Stomatology, Zhejiang University School of Medicine, Hangzhou, China
| | - Yadong Chen
- Department of Endodontics, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, China
- Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
- CONTACT Yadong Chen Department of Endodontics, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou310000, China
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Shan T, Chen X, Zhou X, Wang N, Ren B, Cheng L. Stimulus-responsive biomaterials for Helicobacter pylori eradication. J Adv Res 2023:S2090-1232(23)00406-X. [PMID: 38160707 DOI: 10.1016/j.jare.2023.12.019] [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: 08/12/2023] [Revised: 11/27/2023] [Accepted: 12/27/2023] [Indexed: 01/03/2024] Open
Abstract
BACKGROUND Helicobacter pylori (H. pylori), the only bacterium classified as a type I (definite) carcinogen, is strongly associated with the development of gastric inflammation and adenocarcinoma. It infects the stomach of approximately half of the global population, equivalent to nearly 4.4 billion people. However, due to physiological barriers in the stomach, microbial barriers and increased antibiotic resistance, the therapeutic efficiency of standard antibiotic therapy is limited and cannot meet the clinical needs in some areas. Combining stimulus-responsive biomaterials with certain stimuli is an emerging antibacterial strategy. Stimulus-responsive biomaterials can respond to chemical, biological or physical cues in the environment with corresponding changes in their own properties and functions, highlighting a more intelligent, targeting and efficient aspect for H. pylori therapy. AIM OF REVIEW This review describes the critical obstacles in the current treatment of H. pylori, summarizes the recent advances in stimulus-responsive biomaterials against H. pylori by elucidating their working mechanisms and antibacterial performances under different types of stimuli (pH, enzymes, light, magnetic and ultrasound irradiations), and attempts to analyze the future prospects of such smart biomaterial for H. pylori eradication. Key Scientific Concepts of Review: Any characteristic property or change in the biomilieu at the H. pylori infected site (endogenous stimuli) or specific iatrogenic conditions in vitro (exogenous stimuli) can act as cues to activate or potentiate the antibacterial activity of responsive biomaterials. The responsiveness of these materials to endogenous stimuli enhances antimicrobial targeting, and makes physiological barriers that would otherwise hinder conventional H. pylori therapies a key factor in facilitating antibacterial effects. The responsiveness to exogenous stimuli greatly prolongs the action time of antimicrobial materials and pinpoints the site of infection, thereby reducing toxic side effects. These findings pave the way for the development of more precise and effective anti-H. pylori treatment.
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Affiliation(s)
- Tiantian Shan
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China; Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Xi Chen
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China; Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Xinxuan Zhou
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Nanxi Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Biao Ren
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.
| | - Lei Cheng
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China; Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.
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Crisp AR, Short B, Rowan L, Ramage G, Rehman IU, Short RD, Williams C. Investigating the chemical pathway to the formation of a single biofilm using infrared spectroscopy. Biofilm 2023; 6:100141. [PMID: 37449091 PMCID: PMC10336410 DOI: 10.1016/j.bioflm.2023.100141] [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: 12/22/2022] [Revised: 06/02/2023] [Accepted: 06/30/2023] [Indexed: 07/18/2023] Open
Abstract
Diagnosing biofilm infections has remained a constant challenge for the last 50 years. Existing diagnostic methods struggle to identify the biofilm phenotype. Moreover, most methods of biofilm analysis destroy the biofilm making the resultant data interpretation difficult. In this study we introduce Fourier Transform Infra-Red (FTIR) spectroscopy as a label-free, non-destructive approach to monitoring biofilm progression. We have utilised FTIR in a novel application to evaluate the chemical composition of bacterial biofilms without disrupting the biofilm architecture. S. epidermidis (RP62A) was grown onto calcium fluoride slides for periods of 30 min-96 h, before semi-drying samples for analysis. We report the discovery of a chemical marker to distinguish between planktonic and biofilm samples. The appearance of new proteins in biofilm samples of varying maturity is exemplified in the spectroscopic data, highlighting the potential of FTIR for identifying the presence and developmental stage of a single biofilm.
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Affiliation(s)
- Amy R. Crisp
- Engineering Department, Lancaster University, Bailrigg, Lancaster, LA1 4YW, UK
| | - Bryn Short
- School of Medicine, Dentistry and Nursing, MVLS, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Laurence Rowan
- School of Medicine, Dentistry and Nursing, MVLS, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Gordon Ramage
- School of Medicine, Dentistry and Nursing, MVLS, University of Glasgow, Glasgow, G12 8QQ, UK
| | | | - Robert D. Short
- Department of Chemistry, The University of Sheffield, Brook Hill, Sheffield, S3 7HF, UK
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Zhang S, Wen J, Wang Y, Zhong Z, Wang M, Jia R, Chen S, Liu M, Zhu D, Zhao X, Wu Y, Yang Q, Huang J, Ou X, Mao S, Gao Q, Sun D, Tian B, Cheng A. Decoding the enigma: unveiling the molecular transmission of avian-associated tet(X4)-positive E. coli in Sichuan Province, China. Poult Sci 2023; 102:103142. [PMID: 37879166 PMCID: PMC10618799 DOI: 10.1016/j.psj.2023.103142] [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: 06/07/2023] [Revised: 09/18/2023] [Accepted: 09/18/2023] [Indexed: 10/27/2023] Open
Abstract
Tigecycline is considered one of the "last resort antibiotics" for treating complex infections caused by multidrug-resistant (MDR) bacteria, especially for combating clinical resistant strains that produce carbapenemases. However, the tet(X4) gene, which carried by different plasmids can mediate high levels of bacterial resistance to tigecycline, was first reported in 2019. Here, we report the emergence of the plasmid-mediated tet(X4) in avian environment of Sichuan Province. A total of 21 tet(X4)-positive Escherichia coli (E. coli) strains were isolated and identified from avian samples in selected regions, with an isolation rate of 1.6% (21/1,286), and all of them were MDR strains. Multilocus Sequence Typing (MLST) method was used to classify the 21 tet(X4)-positive E. coli into the ST206, ST761, ST155, ST1638, ST542, and ST767 types, which also belong to the 3 phylogenetic subgroups A, B1, and C. Tet(X4) is located on mobile plasmids that can be efficiently and stably propagated. The results of fitness cost experiments showed that tet(X4)-positive plasmids may incur some fitness cost to host bacteria, but different tet(X4)-positive plasmids bring about differential fitness costs. Whole-genome sequencing further confirmed the tet(X4) gene can be located on IncX1-type plasmids and the core genetic structures are ISVsa3-rdmc-tet(X4) or rdmc-tet(X4)-ISVsa3, the former is a 7 copies tandem repeat structure. In this study, we isolated and identified tet(X4)-positive E. coli from the avian origin in Sichuan, analyzed the mobility of the tet(X4) by conjugational transfer and S1-PFGE, and evaluated the biological characteristics of the tet(X4)-positive plasmid using the results of conjugational frequency, plasmid stability, and fitness costs. Finally, combined with the third-generation whole-genome sequencing analysis, the molecular transmission characteristics of the tet(X4) were preliminarily clarified, providing a scientific basis for guiding veterinary clinical use in this area, as well as risk assessment and prevention of the transfer and spread of tigecycline resistant strains or genes.
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Affiliation(s)
- Shaqiu Zhang
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, PR China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the PR China, Chengdu 611130, PR China
| | - Jinfeng Wen
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China
| | - Yuwei Wang
- Mianyang Academy of Agricultural Sciences, Mianyang 621023, PR China
| | - Zhijun Zhong
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, PR China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the PR China, Chengdu 611130, PR China
| | - Mingshu Wang
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, PR China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the PR China, Chengdu 611130, PR China
| | - Renyong Jia
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, PR China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the PR China, Chengdu 611130, PR China
| | - Shun Chen
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, PR China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the PR China, Chengdu 611130, PR China
| | - Mafeng Liu
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, PR China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the PR China, Chengdu 611130, PR China
| | - Dekang Zhu
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, PR China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the PR China, Chengdu 611130, PR China
| | - Xinxin Zhao
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, PR China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the PR China, Chengdu 611130, PR China
| | - Ying Wu
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, PR China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the PR China, Chengdu 611130, PR China
| | - Qiao Yang
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, PR China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the PR China, Chengdu 611130, PR China
| | - Juan Huang
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, PR China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the PR China, Chengdu 611130, PR China
| | - Xumin Ou
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, PR China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the PR China, Chengdu 611130, PR China
| | - Sai Mao
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, PR China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the PR China, Chengdu 611130, PR China
| | - Qun Gao
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, PR China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the PR China, Chengdu 611130, PR China
| | - Di Sun
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, PR China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the PR China, Chengdu 611130, PR China
| | - Bin Tian
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, PR China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the PR China, Chengdu 611130, PR China
| | - Anchun Cheng
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, PR China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, PR China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the PR China, Chengdu 611130, PR China.
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Sharma S, Raj K, Riyaz M, Singh DD. Antimicrobial Studies on Garlic Lectin. Probiotics Antimicrob Proteins 2023; 15:1501-1512. [PMID: 36316578 DOI: 10.1007/s12602-022-10001-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/18/2022] [Indexed: 06/16/2023]
Abstract
Allium sativum agglutinin (ASA) is an important lectin isolated from garlic bulbs and has shown promising therapeutic potential in earlier reports. It has a bulb-type lectin domain, and members of this protein family have been investigated for anti-cancer, antimicrobial and other effects. In our earlier study, we have reported ASA as an anti-cancer agent, and in the present study, we have evaluated it for its antifungal and antimicrobial effects. The effects of ASA on the opportunistic pathogens in humans Candida auris and Candida glabrata fungal strains have been evaluated, and efforts are made to evaluate the mechanistic basis of these antifungal effects. The antifungal activity of ASA on different strains of C. glabrata and C. auris was found with MIC50 concentration range of 30-70 µg/ml. Fungal growth was significantly suppressed upon treatment with ASA at MIC50 and 2MIC50. Hydrogen peroxide production was detected after ASA treatment in fungal cells and cell morphology, and integrity was affected when analysed through FE-SEM. Further, the anti-biofilm effect of ASA was investigated against Candida and three bacterial strains (Escherichia coli, Staphylococcus aureus and Klebsiella pneumoniae), and promising results were obtained with maximal effect in case of K. pneumoniae among the bacterial strains. These results can form the basis for the development of ASA as antimicrobial agent.
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Affiliation(s)
- Shally Sharma
- Biotechnology Department, Panjab University, Sector-25, Chandigarh, 160014, India
| | - Khem Raj
- Microbiology Department, Panjab University, Sector-25, Chandigarh, 160014, India
| | - Mohammad Riyaz
- Microbiology Department, Panjab University, Sector-25, Chandigarh, 160014, India
| | - Desh Deepak Singh
- Biotechnology Department, Panjab University, Sector-25, Chandigarh, 160014, India.
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Chen K, Zhu Y, Su H, Jiang H, Liu X. Modified Zhibai Dihuang pill alleviated urinary tract infection induced by extended-spectrum β-lactamase Escherichia coli in rats by regulating biofilm formation. PHARMACEUTICAL BIOLOGY 2023; 61:674-682. [PMID: 37096639 PMCID: PMC10132235 DOI: 10.1080/13880209.2023.2199786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 04/02/2023] [Indexed: 05/03/2023]
Abstract
CONTEXT Zhibai Dihuang pill (ZD), a traditional Chinese medicine nourishes Yin and reduces internal heat, is believed to have therapeutic effects on urinary tract infections (UTIs). OBJECTIVE To explore the effects and mechanism of modified ZD (MZD) on UTI induced by extended-spectrum β-lactamase (ESBLs) Escherichia coli. MATERIALS AND METHODS Thirty Sprague-Dawley rats were randomly divided into control, model (0.5 mL 1.5 × 108 CFU/mL ESBLs E. coli), MZD (20 g/kg MZD), LVFX (0.025 g/kg LVFX), and MZD + LVFX groups (20 g/kg MZD + 0.025 g/kg LVFX), n = 6. After 14 days of treatment, serum biochemical indicators, renal function indicators, bladder and renal histopathology, and urine bacterial counts in rats were determined. Additionally, the effects of MZD on ESBLs E. coli biofilm formation and related gene expression were analyzed. RESULTS MZD significantly decreased the count of white blood cells (from 13.12 to 9.13), the proportion of neutrophils (from 43.53 to 23.18), C-reactive protein (from 13.21 to 9.71), serum creatinine (from 35.78 to 30.15), and urea nitrogen (from 12.56 to 10.15), relieved the inflammation and fibrosis of bladder and kidney tissues, and reduced the number of bacteria in urine (from 2174 to 559). In addition, MZD inhibited the formation of ESBLs E. coli biofilms (2.04-fold) and decreased the gene expressions of luxS, pfS and ompA (1.41-1.62-fold). DISCUSSION AND CONCLUSION MZD treated ESBLs E. coli-induced UTI inhibited biofilm formation, providing a theoretical basis for the clinical application of MZD. Further study on the clinical effect of MZD may provide a novel therapy option for UTI.
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Affiliation(s)
- Kaifa Chen
- Department of Urology, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Yongsheng Zhu
- Department of Urology, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Hongwei Su
- Department of Urology, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Hao Jiang
- Department of Urology, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Xin Liu
- Department of Urology, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
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Niu Y, Zhang Y, Huo H, Jin X, Wang J. Effect of silver sulfadiazine on mature mixed bacterial biofilms on voice prostheses. J Otolaryngol Head Neck Surg 2023; 52:74. [PMID: 37990258 PMCID: PMC10664368 DOI: 10.1186/s40463-023-00672-3] [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: 06/08/2023] [Accepted: 09/29/2023] [Indexed: 11/23/2023] Open
Abstract
BACKGROUND Biofilm formation on voice prostheses disrupts the function and limits the lifespan of voice prostheses. There is still no effective clinical strategy for inhibiting or removing these biofilms. Silver sulfadiazine (SSD), as an exogenous antibacterial agent, has been widely used in the prevention and treatment of infection, however, its effect on voice prosthesis biofilms is unknown. The purpose of this study was to explore the effect of SSD on the mature mixed bacterial biofilms present on voice prostheses. METHODS Quantitative and qualitative methods, including the plate counting method, real-time fluorescence quantitative PCR, crystal violet staining, the 2,3-bis(2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium-5-carboxanilide) (XTT) reduction assay, scanning electron microscopy, and laser confocal microscopy, were used to determine the effect of SSD on the number of bacterial colonies, biofilm formation ability, metabolic activity, and ultrastructure of biofilms in a mature mixed bacterial (Staphylococcus aureus, Streptococcus faecalis and Candida albicans) voice prosthesis biofilm model. The results were verified in vitro on mature mixed bacterial voice prosthesis biofilms from patients, and the possible mechanism of action was explored. RESULTS Silver sulfadiazine decreased the number of bacterial colonies on mature mixed bacterial voice prosthesis biofilm, significantly inhibited the biofilm formation ability and metabolic activity of mature voice prosthesis biofilms, inhibited the formation of the complex spatial structure of voice prosthesis biofilms, and inhibited the synthesis of polysaccharides and proteins in the biofilm extracellular matrix. The degree of inhibition and removal effect increased with SSD concentration. CONCLUSIONS Silver sulfadiazine can effectively inhibit and remove mature mixed bacterial voice prosthesis biofilms and decrease biofilm formation ability and metabolic activity; SSD may exert these effects by inhibiting the synthesis of polysaccharides and proteins among the extracellular polymeric substances of voice prosthesis biofilms.
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Affiliation(s)
- Yanyan Niu
- Department of Otolaryngology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, 1# ShuaiFuYuan, Dongcheng District, Beijing, 100730, People's Republic of China
| | - Yongli Zhang
- Department of Otolaryngology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, 1# ShuaiFuYuan, Dongcheng District, Beijing, 100730, People's Republic of China
- Department of Otorhinolaryngology Head and Neck Surgery, China-Japan Friendship Hospital, Beijing, People's Republic of China
| | - Hong Huo
- Department of Otolaryngology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, 1# ShuaiFuYuan, Dongcheng District, Beijing, 100730, People's Republic of China
| | - Xiaofeng Jin
- Department of Otolaryngology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, 1# ShuaiFuYuan, Dongcheng District, Beijing, 100730, People's Republic of China.
| | - Jian Wang
- Department of Otolaryngology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, 1# ShuaiFuYuan, Dongcheng District, Beijing, 100730, People's Republic of China.
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Wijaya M, Delicia D, Waturangi DE. Control of pathogenic bacteria using marine actinobacterial extract with antiquorum sensing and antibiofilm activity. BMC Res Notes 2023; 16:305. [PMID: 37919800 PMCID: PMC10623884 DOI: 10.1186/s13104-023-06580-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Accepted: 10/18/2023] [Indexed: 11/04/2023] Open
Abstract
OBJECTIVE The objectives of this research were to screen the anti-quorum sensing and antibiofilm activity of marine actinobacteria, isolated from several aquatic environments in Indonesia against several pathogenic bacteria, such as Staphylococcus aureus, Bacillus cereus, Enterococcus faecalis, Vibrio cholerae, Salmonella Typhimurium, and Pseudomonas aeruginosa. RESULTS Ten out of 40 actinobacteria were found to have anti-quorum sensing activity against wild-type Chromobacterium violaceum (ATCC 12472); however, the validation assay showed that only eight of 10 significantly inhibited the quorum sensing system of Chromobacterium violaceum CV026. The crude actinobacteria extracts inhibited and disrupted biofilm formation produced by pathogens. The highest antibiofilm inhibition was discovered in isolates 11AC (90%), 1AC (90%), CW17 (84%), TB12 (94%), 20PM (85%), CW01 (93%) against Staphylococcus aureus, Bacillus cereus, Enterococcus faecalis, Vibrio cholerae, Salmonella Typhimurium, and Pseudomonas aeruginosa, respectively. The highest biofilm destruction activity was observed for isolate 1AC (77%), 20PM (85%), 16PM (72%), CW01 (73%), 18PM (82%), 16PM (63%) against Staphylococcus aureus, Bacillus cereus, Enterococcus faecalis, Vibrio cholerae, Salmonella Typhimurium, and Pseudomonas aeruginosa, respectively. Actinobacteria isolates demonstrated promising anti-quorum and/or antibiofilm activity, interfering with the biofilm formation of tested pathogens. Appropriate formulations of these extracts could be developed as effective disinfectants, eradicating biofilms in many industries.
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Affiliation(s)
- Marco Wijaya
- Faculty of Biotechnology, Atma Jaya Catholic University of Indonesia, Jenderal Sudirman 51 Street, South Jakarta, DKI Jakarta, 12930, Indonesia
| | - Dea Delicia
- Faculty of Biotechnology, Atma Jaya Catholic University of Indonesia, Jenderal Sudirman 51 Street, South Jakarta, DKI Jakarta, 12930, Indonesia
| | - Diana Elizabeth Waturangi
- Faculty of Biotechnology, Atma Jaya Catholic University of Indonesia, Jenderal Sudirman 51 Street, South Jakarta, DKI Jakarta, 12930, Indonesia.
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Chaves RP, Dos Santos AKB, Andrade AL, Pinheiro ADA, Silva JMDS, da Silva FMS, de Sousa JP, Barroso Neto IL, Bezerra EHS, Abreu JO, de Carvalho FCT, de Sousa OV, de Sousa BL, da Rocha BAM, Silva ALC, do Nascimento Neto LG, de Vasconcelos MA, Teixeira EH, Carneiro RF, Sampaio AH, Nagano CS. Structural study and antimicrobial and wound healing effects of lectin from Solieria filiformis (Kützing) P.W.Gabrielson. Biochimie 2023; 214:61-76. [PMID: 37301421 DOI: 10.1016/j.biochi.2023.05.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 05/12/2023] [Accepted: 05/29/2023] [Indexed: 06/12/2023]
Abstract
The SfL-1 isoform from the marine red algae Solieria filiformis was produced in recombinant form (rSfL-1) and showed hemagglutinating activity and inhibition similar to native SfL. The analysis of circular dichroism revealed the predominance of β-strands structures with spectra of βI-proteins for both lectins, which had Melting Temperature (Tm) between 41 °C and 53 °C. The three-dimensional structure of the rSfL-1 was determined by X-ray crystallography, revealing that it is composed of two β-barrel domains formed by five antiparallel β chains linked by a short peptide between the β-barrels. SfL and rSfL-1 were able to agglutinate strains of Escherichia coli and Staphylococcus aureus and did not show antibacterial activity. However, SfL induced a reduction in E. coli biomass at concentrations from 250 to 125 μg mL-1, whereas rSfL-1 induced reduction in all concentrations tested. Additionally, rSfL-1 at concentrations from 250 to 62.5 μg mL-1, showed a statistically significant reduction in the number of colony-forming units, which was not noticed for SfL. Wound healing assay showed that the treatments with SfL and rSfL-1 act in reducing the inflammatory response and in the activation and proliferation of fibroblasts by a larger and fast deposition of collagen.
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Affiliation(s)
- Renata Pinheiro Chaves
- Departamento de Engenharia de Pesca, Universidade Federal do Ceará, Campus do Pici, Fortaleza, Ceará, Brazil
| | | | - Alexandre Lopes Andrade
- Departamento de Patologia e Medicina Legal, Universidade Federal do Ceará, Campus do Porangabuçu, Fortaleza, Ceará, Brazil
| | - Aryane de Azevedo Pinheiro
- Departamento de Patologia e Medicina Legal, Universidade Federal do Ceará, Campus do Porangabuçu, Fortaleza, Ceará, Brazil; Curso de Medicina, Centro Universitário INTA, UNINTA, Itapipoca, CE, Brazil
| | | | | | - Jucilene Pereira de Sousa
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Campus do Pici, Fortaleza, Ceará, Brazil
| | - Ito Liberato Barroso Neto
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Campus do Pici, Fortaleza, Ceará, Brazil; Curso de Medicina, Centro Universitário Unichristus, Fortaleza, Ceará, Brazil
| | - Eduardo Henrique Salviano Bezerra
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Campus do Pici, Fortaleza, Ceará, Brazil; Laboratório Nacional de Biociências, Centro Nacional de Pesquisa em Energia e Materiais, Cidade Universitária, Campinas, São Paulo, Brazil
| | - Jade Oliveira Abreu
- Instituto de Ciências do Mar - Labomar, Universidade Federal do Ceará, Fortaleza, CE, Brazil
| | | | - Oscarina Viana de Sousa
- Instituto de Ciências do Mar - Labomar, Universidade Federal do Ceará, Fortaleza, CE, Brazil
| | - Bruno Lopes de Sousa
- Faculdade de Filosofia Dom Aureliano Matos, Universidade Estadual do Ceará, Limoeiro do Norte, CE, Brazil
| | - Bruno Anderson Matias da Rocha
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Campus do Pici, Fortaleza, Ceará, Brazil
| | - André Luis Coelho Silva
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Campus do Pici, Fortaleza, Ceará, Brazil
| | - Luiz Gonzaga do Nascimento Neto
- Departamento de Patologia e Medicina Legal, Universidade Federal do Ceará, Campus do Porangabuçu, Fortaleza, Ceará, Brazil; Curso de Licenciatura em Ciências Biológicas, Instituto Federal de Educação, Ciência e Tecnologia do Ceará, Campus Acaraú, Acaraú, CE, Brazil
| | - Mayron Alves de Vasconcelos
- Departamento de Patologia e Medicina Legal, Universidade Federal do Ceará, Campus do Porangabuçu, Fortaleza, Ceará, Brazil; Universidade do Estado de Minas Gerais, Unidade de Divinopolis, Divinopolis, MG, Brazil
| | - Edson Holanda Teixeira
- Departamento de Patologia e Medicina Legal, Universidade Federal do Ceará, Campus do Porangabuçu, Fortaleza, Ceará, Brazil
| | - Rômulo Farias Carneiro
- Departamento de Engenharia de Pesca, Universidade Federal do Ceará, Campus do Pici, Fortaleza, Ceará, Brazil
| | - Alexandre Holanda Sampaio
- Departamento de Engenharia de Pesca, Universidade Federal do Ceará, Campus do Pici, Fortaleza, Ceará, Brazil
| | - Celso Shiniti Nagano
- Departamento de Engenharia de Pesca, Universidade Federal do Ceará, Campus do Pici, Fortaleza, Ceará, Brazil.
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Vetrivel A, Vetrivel P, Dhandapani K, Natchimuthu S, Ramasamy M, Madheswaran S, Murugesan R. Inhibition of biofilm formation, quorum sensing and virulence factor production in Pseudomonas aeruginosa PAO1 by selected LasR inhibitors. Int Microbiol 2023; 26:851-868. [PMID: 36806045 DOI: 10.1007/s10123-023-00338-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 02/01/2023] [Accepted: 02/07/2023] [Indexed: 02/23/2023]
Abstract
The quorum sensing network of Pseudomonas aeruginosa mediates the regulation of genes controlling biofilm formation and virulence factors. The rise of drug resistance to Pseudomonas aeruginosa infections has made quorum sensing-regulated biofilm formation in clinical settings a major issue. In the present study, LasR inhibitors identified in our previous study were evaluated for their antibiofilm and antiquorum sensing activities against P. aeruginosa PAO1. The compounds selected were (3-[2-(3,4-dimethoxyphenyl)-2-(1H-indol-3-yl)ethyl]-1-(2-fluorophenyl)urea) (C1), (3-(4-fluorophenyl)-2-[(3-methylquinoxalin-2-yl)methylsulfanyl]quinazolin-4-one) (C2) and (2-({4-[4-(2-methoxyphenyl)piperazin-1-yl]pyrimidin-2-yl}sulfanyl)-N-(2,4,6-trimethylphenyl)acetamide) (C3). The minimum inhibitory concentrations of C1 and C2 were 1000 μM, whereas that of C3 was 500 μM. At sub-MICs, the compounds showed potent antibiofilm activity without affecting the growth of P. aeruginosa PAO1. Electron microscopy confirmed the disruption of biofilm by the selected compounds. The antiquorum sensing activity of the compounds was revealed by the inhibition of violacein in Chromobacterium violaceum and the inhibition of swimming and swarming motilities in P. aeruginosa PAO1. Furthermore, the compounds also attenuated the production of quorum sensing-mediated virulence factors. The qRT-PCR revealed the downregulation of quorum sensing regulatory genes, namely lasI, lasR, rhlI, rhlR, lasB, pqsA and pqsR. The selected compounds also exhibited lower cytotoxicity against peripheral blood lymphocytes. Thus, this study could pave a way to explore these compounds for the development of therapeutic agent against Pseudomonas aeruginosa biofilm-related infections.
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Affiliation(s)
- Aishwarya Vetrivel
- Department of Biochemistry, Biotechnology and Bioinformatics, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, 641043, Tamil Nadu, India
| | - Preethi Vetrivel
- Department of Pharmacy, National University of Singapore, Singapore 119077, Singapore
| | - Kavitha Dhandapani
- Department of Biochemistry, Biotechnology and Bioinformatics, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, 641043, Tamil Nadu, India
| | - Santhi Natchimuthu
- Department of Biochemistry, Biotechnology and Bioinformatics, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, 641043, Tamil Nadu, India
| | - Monica Ramasamy
- Department of Biochemistry, Biotechnology and Bioinformatics, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, 641043, Tamil Nadu, India
| | - Soundariya Madheswaran
- Department of Biochemistry, Biotechnology and Bioinformatics, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, 641043, Tamil Nadu, India
| | - Rajeswari Murugesan
- Department of Biochemistry, Biotechnology and Bioinformatics, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, 641043, Tamil Nadu, India.
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Pacheco-Yanes J, Reynolds E, Li J, Mariño E. Microbiome-targeted interventions for the control of oral-gut dysbiosis and chronic systemic inflammation. Trends Mol Med 2023; 29:912-925. [PMID: 37730461 DOI: 10.1016/j.molmed.2023.08.006] [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: 06/13/2023] [Revised: 08/14/2023] [Accepted: 08/16/2023] [Indexed: 09/22/2023]
Abstract
Recent research has confirmed the strong connection between imbalances in the oral and gut microbiome (oral-gut dysbiosis), periodontitis, and inflammatory conditions such as diabetes, Alzheimer's disease, and cardiovascular diseases. Microbiome modulation is crucial for preventing and treating several autoimmune and inflammatory diseases, including periodontitis. However, the causal relationships between the microbiome and its derived metabolites that mediate periodontitis and chronic inflammation constitute a notable knowledge gap. Here we review the mechanisms involved in the microbiome-host crosstalk, and describe novel precision medicine for the control of systemic inflammation. As microbiome-targeted therapies begin to enter clinical trials, the success of these approaches relies upon understanding these reciprocal microbiome-host interactions, and it may provide new therapeutic avenues to reduce the risk of periodontitis-associated diseases.
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Affiliation(s)
- Juan Pacheco-Yanes
- Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Eric Reynolds
- Oral Health Collaborative Research Centre, Melbourne Dental School, Bio21 Institute, The University of Melbourne, Victoria, Australia
| | - Jian Li
- Department of Microbiology, Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Eliana Mariño
- Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia; ImmunoBiota Therapeutics Pty Ltd, Melbourne, Australia.
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Paes Dutra JA, Gonçalves Carvalho S, Soares de Oliveira A, Borges Monteiro JR, Rodrigues Pereira de Oliveira Borlot J, Tavares Luiz M, Bauab TM, Rezende Kitagawa R, Chorilli M. Microparticles and nanoparticles-based approaches to improve oral treatment of Helicobacter pylori infection. Crit Rev Microbiol 2023:1-22. [PMID: 37897442 DOI: 10.1080/1040841x.2023.2274835] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 10/17/2023] [Indexed: 10/30/2023]
Abstract
Helicobacter pylori is a gram-negative, spiral-shaped, flagellated bacterium that colonizes the stomach of half the world's population. Helicobacter pylori infection causes pathologies of varying severity. Standard oral therapy fails in 15-20% since the barriers of the oral route decrease the bioavailability of antibiotics and the intrinsic factors of bacteria increase the rates of resistance. Nanoparticles and microparticles are promising strategies for drug delivery into the gastric mucosa and targeting H. pylori. The variety of building blocks creates systems with distinct colloidal, surface, and biological properties. These features improve drug-pathogen interactions, eliminate drug depletion and overuse, and enable the association of multiple actives combating H. pylori on several fronts. Nanoparticles and microparticles are successfully used to overcome the barriers of the oral route, physicochemical inconveniences, and lack of selectivity of current therapy. They have proven efficient in employing promising anti-H. pylori compounds whose limitation is oral route instability, such as some antibiotics and natural products. However, the current challenge is the applicability of these strategies in clinical practice. For this reason, strategies employing a rational design are necessary, including in the development of nano- and microsystems for the oral route.
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Affiliation(s)
| | | | | | | | | | - Marcela Tavares Luiz
- School of Pharmaceutical Science, Sao Paulo State University (UNESP), Araraquara, Brazil
| | - Tais Maria Bauab
- School of Pharmaceutical Science, Sao Paulo State University (UNESP), Araraquara, Brazil
| | | | - Marlus Chorilli
- School of Pharmaceutical Science, Sao Paulo State University (UNESP), Araraquara, Brazil
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Wunnoo S, Lorenzo-Leal AC, Voravuthikunchai SP, Bach H. Advanced biomaterial agent from chitosan/poloxamer 407-based thermosensitive hydrogen containing biosynthesized silver nanoparticles using Eucalyptus camaldulensis leaf extract. PLoS One 2023; 18:e0291505. [PMID: 37862295 PMCID: PMC10588896 DOI: 10.1371/journal.pone.0291505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 08/30/2023] [Indexed: 10/22/2023] Open
Abstract
CONTEXT The emergence of multidrug-resistant (MDR) pathogens poses a significant challenge for global public health systems, increasing hospital morbidity and mortality and prolonged hospitalization. OBJECTIVE We evaluated the antimicrobial activity of a thermosensitive hydrogel containing bio-synthesized silver nanoparticles (bio-AgNPs) based on chitosan/poloxamer 407 using a leaf extract of Eucalyptus calmadulensis. RESULTS The thermosensitive hydrogel was prepared by a cold method after mixing the ingredients and left at 4°C overnight to ensure the complete solubilization of poloxamer 407. The stability of the hydrogel formulation was evaluated at room temperature for 3 months, and the absorption peak (420 nm) of the NPs remained unchanged. The hydrogel formulation demonstrated rapid gelation under physiological conditions, excellent water retention (85%), and broad-spectrum antimicrobial activity against MDR clinical isolates and ATCC strains. In this regard, minimum inhibitory concentration and minimum microbial concentration values of the bio-AgNPs ranged from 2-8 μg/mL to 8-128 μg/mL, respectively. Formulation at concentrations <64 μg/mL showed no cytotoxic effect on human-derived macrophages (THP-1 cells) with no induction of inflammation. CONCLUSIONS The formulated hydrogel could be used in biomedical applications as it possesses a broad antimicrobial spectrum and anti-inflammatory properties without toxic effects on human cells.
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Affiliation(s)
- Suttiwan Wunnoo
- Faculty of Science, Division of Biological Science, Prince of Songkhla University, Hat Yai, Songkhla, Thailand
- Center of Antimicrobial Biomaterial Innovation-Southeast Asia, Prince of Songkhla University, Hat Yai, Songkhla, Thailand
- Division of Infectious Disease, Department of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Ana C Lorenzo-Leal
- Division of Infectious Disease, Department of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Supayang P Voravuthikunchai
- Faculty of Science, Division of Biological Science, Prince of Songkhla University, Hat Yai, Songkhla, Thailand
- Center of Antimicrobial Biomaterial Innovation-Southeast Asia, Prince of Songkhla University, Hat Yai, Songkhla, Thailand
| | - Horacio Bach
- Division of Infectious Disease, Department of Medicine, University of British Columbia, Vancouver, BC, Canada
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Gebreyohannes G, Sbhatu DB, Nyerere A, Bii C, Gebrehiwot AG. Wild Mushrooms: Potential Natural Sources of Antioxidant and Anti-Quorum Sensing Bioactive Compounds for Medical Applications. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2023; 2023:6141646. [PMID: 37899907 PMCID: PMC10602707 DOI: 10.1155/2023/6141646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 09/30/2023] [Accepted: 10/03/2023] [Indexed: 10/31/2023]
Abstract
Objective This study was aimed at determining the antioxidant, anti-quorum sensing, and in vitro cytotoxic activities of five wild mushroom extracts. Methods Wild mushrooms of Auricularia auricula-judae, Termitomyces umkowaani, Trametes elegans, Trametes versicolor, and Microporus xanthopus were collected from Arabuko-Sokoke and Kakamega National Forests, in Kenya. Specimens were identified and extracted using chloroform (CHL), 70% ethanol (Eth), and hot water (HW) solvents. Antioxidant and cytotoxic activities of the extracts were determined using 2,2-diphenyl-1-picrylhydrazyl (DPPH) and Vero cell lines, respectively, while anti-quorum sensing activities were tested against Chromobacterium violaceum. All data were compared using relevant descriptive and inferential statistics at a significance level of p ≤ 0.05. Results A total of 35 wild mushrooms were collected, identified, and classified into 14 genera. Among screened mycochemicals, fatty acids, flavonoids, polyphenols, and saponins were detected at higher concentrations. The highest free radical scavenging activities of A. auricula-judae, T. umkowaani, T. elegans, and T. versicolor were observed in 70% Eth extract with the percentage values of 76.40 ± 0.12%, 68.40 ± 0.01%, 62.40 ± 0.07%, and 66.40 ± 0.04%, respectively, whereas the HW extract of Microporus xanthopus showed free radical scavenging activity at 65.90 ± 0.02%. None of the extracts, at the tested concentrations (up to 1000 µg/mL), had shown cytotoxic activity against the Vero cell line. The HW extract of T. umkowaani and the 70% Eth extract of T. versicolor showed a statistically significant difference in the inhibitory activity of violacein production against C. violaceum at the concentration of 200 µg/mL. Conclusions The antioxidant activity of wild mushrooms can help to tackle the diseases caused by free radicals. The anti-quorum sensing potential of wild mushrooms could also provide future alternatives to conventional drug therapies cost-effectively. Further detailed chemistry of the bioactive compounds and their possible mechanisms of action responsible for the observed antioxidant and anti-quorum sensing activities are needed.
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Affiliation(s)
- Gebreselema Gebreyohannes
- Department of Biological and Chemical Engineering, Mekelle Institute of Technology, Mekelle University, Ethiopia
| | - Desta Berhe Sbhatu
- Department of Biological and Chemical Engineering, Mekelle Institute of Technology, Mekelle University, Ethiopia
| | - Andrew Nyerere
- Department of Medical Microbiology, College of Health Sciences, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya
| | - Christine Bii
- Center for Microbiology Research, Kenya Medical Research Institute, Nairobi, Kenya
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Ornelas García IG, Guerrero Barrera AL, Avelar González FJ, Chávez Vela NA, Gutiérrez Montiel D. Bougainvillea glabra Choisy (Nyctinaginacea): review of phytochemistry and antimicrobial potential. Front Chem 2023; 11:1276514. [PMID: 37927559 PMCID: PMC10620508 DOI: 10.3389/fchem.2023.1276514] [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: 08/12/2023] [Accepted: 09/22/2023] [Indexed: 11/07/2023] Open
Abstract
The Bougainvillea glabra or bougainvillea is a climbing plant native from South America belonging to the Nyctaginaceae family. The bougainvillea is recognized worldwide for its horticultural importance, due to the color of its bracts, commonly known as "flowers," made up of bracts, which are the striking parts, and the true flowers, which are white and small. Bougainvillea is widely known in traditional medicine to treat respiratory diseases such as cough, asthma, and bronchitis, gastrointestinal diseases, also for its antibacterial and insecticidal capacity. The antimicrobial potential of the involucre of this plant has not been studied, despite research showing a high phytochemical presence of secondary metabolites such as alkanes, phenols, terpenes, and betalains. This review compiles information about the traditional uses of B. glabra, its botanical description, ecological relevance, phytochemistry, antimicrobial and antibiofilm activity, such as the toxicology of bracts and flowers.
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Affiliation(s)
- Ingrid G. Ornelas García
- Centro de Ciencias Básicas, Laboratorio de Biología Celular y Tisular, Departamento de Morfología, Universidad Autónoma de Aguascalientes (UAA), Aguascalientes, Mexico
| | - Alma L. Guerrero Barrera
- Centro de Ciencias Básicas, Laboratorio de Biología Celular y Tisular, Departamento de Morfología, Universidad Autónoma de Aguascalientes (UAA), Aguascalientes, Mexico
| | - Francisco J. Avelar González
- Centro de Ciencias Básicas, Laboratorio de Estudios Ambientales, Departamento de Fisiología y Farmacología, Universidad Autónoma de Aguascalientes (UAA), Aguascalientes, Mexico
| | - Norma A. Chávez Vela
- Laboratorio de Biotecnología, Centro de Ciencias Básicas, Departamento Ingeniería Bioquímica, Aguascalientes, Mexico
| | - Daniela Gutiérrez Montiel
- Centro de Ciencias Básicas, Laboratorio de Biología Celular y Tisular, Departamento de Morfología, Universidad Autónoma de Aguascalientes (UAA), Aguascalientes, Mexico
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Rubio-Mendoza D, Martínez-Meléndez A, Maldonado-Garza HJ, Córdova-Fletes C, Garza-González E. Review of the Impact of Biofilm Formation on Recurrent Clostridioides difficile Infection. Microorganisms 2023; 11:2525. [PMID: 37894183 PMCID: PMC10609348 DOI: 10.3390/microorganisms11102525] [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: 09/05/2023] [Revised: 09/25/2023] [Accepted: 09/29/2023] [Indexed: 10/29/2023] Open
Abstract
Clostridioides difficile infection (CDI) may recur in approximately 10-30% of patients, and the risk of recurrence increases with each successive recurrence, reaching up to 65%. C. difficile can form biofilm with approximately 20% of the bacterial genome expressed differently between biofilm and planktonic cells. Biofilm plays several roles that may favor recurrence; for example, it may act as a reservoir of spores, protect the vegetative cells from the activity of antibiotics, and favor the formation of persistent cells. Moreover, the expression of several virulence genes, including TcdA and TcdB toxins, has been associated with recurrence. Several systems and structures associated with adhesion and biofilm formation have been studied in C. difficile, including cell-wall proteins, quorum sensing (including LuxS and Agr), Cyclic di-GMP, type IV pili, and flagella. Most antibiotics recommended for the treatment of CDI do not have activity on spores and do not eliminate biofilm. Therapeutic failure in R-CDI has been associated with the inadequate concentration of drugs in the intestinal tract and the antibiotic resistance of a biofilm. This makes it challenging to eradicate C. difficile in the intestine, complicating antibacterial therapies and allowing non-eliminated spores to remain in the biofilm, increasing the risk of recurrence. In this review, we examine the role of biofilm on recurrence and the challenges of treating CDI when the bacteria form a biofilm.
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Affiliation(s)
- Daira Rubio-Mendoza
- Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey 64460, Mexico; (D.R.-M.); (H.J.M.-G.); (C.C.-F.)
| | - Adrián Martínez-Meléndez
- Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza 66455, Mexico;
| | - Héctor Jesús Maldonado-Garza
- Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey 64460, Mexico; (D.R.-M.); (H.J.M.-G.); (C.C.-F.)
| | - Carlos Córdova-Fletes
- Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey 64460, Mexico; (D.R.-M.); (H.J.M.-G.); (C.C.-F.)
| | - Elvira Garza-González
- Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey 64460, Mexico; (D.R.-M.); (H.J.M.-G.); (C.C.-F.)
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Rodjan P, Sangkanu S, Mitsuwan W, Pongpom M, Saengsawang P, Tedja I, Lamai J, Pruksaphon K, Jeenkeawpieam J. Antibacterial and antivirulence factor activities of protein hydrolysates from Phatthalung Sangyod rice ( Oryza sativa L.) seeds against zoonotic and foodborne pathogens. Vet World 2023; 16:2002-2015. [PMID: 38023279 PMCID: PMC10668558 DOI: 10.14202/vetworld.2023.2002-2015] [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: 05/09/2023] [Accepted: 08/17/2023] [Indexed: 12/01/2023] Open
Abstract
Background and Aim Antimicrobial resistance is an emerging public health threat. Foodborne illnesses are typically caused by bacteria, such as Escherichia coli, Pseudomonas aeruginosa, Bacillus cereus, and Staphylococcus aureus, which are frequently resistant to common antimicrobial agents. Rice is a staple grain in most parts of the world. Our previous work showed that Phatthalung Sangyod rice seed protein hydrolysates (SYPs), especially SYP4, exhibit antifungal activity against several fungal species that are pathogenic for both humans and animals and are non-cytotoxic to animal red blood cells. In this study, we aimed to determine the effects of the bioactive peptides in SYPs against several pathogenic bacteria in humans and animals. Materials and Methods After isolating SYP1, it was treated as follows: heated (SYP2), and hydrolyzed using pepsin (SYP3), and proteinase K (SYP4). Then, we used 500 μg of protein to evaluate the antibacterial effects on four pathogenic bacteria, including E. coli, P. aeruginosa, B. cereus, and S. aureus, using agar well diffusion. Using a broth microdilution assay, we determined the minimum inhibitory and bactericidal concentration (MIC and MBC, respectively) values of active SYPs. Using the agar well diffusion and microtube incubation methods, we also assessed the inhibitory effects of SYPs on the bacterial quorum sensing (QS) activity of Chromobacterium violaceum. Sangyod rice seed protein hydrolysates were evaluated for their ability to inhibit the biofilm formation of bacterial cells by a crytal violet assay. Furthermore, using the dropping method, we tested the inhibitory effects of SYPs on the bacterial pigments pyocyanin in P. aeruginosa and staphyloxanthin in S. aureus. Results Our results showed that the crude protein lysate (SYP1) did not exhibit antibacterial activity against any of the test bacteria. Intriguingly, after boiling (SYP2) and enzymatic hydrolysis (SYP3 and SYP4), the protein hydrolysates were transformed into bioactive peptides and displayed antibacterial properties against all of the test bacteria at a concentration of 500 μg as determined by agar well diffusion. SYP4 demonstrated the highest antibacterial activity as it completely inhibited all test strains, with inhibition zones ranging from 16.88 ± 0.25 to 21.25 ± 0.5 mm, and also yielded the highest MIC/MBC values against P. aeruginosa, B. cereus, and E. coli, at 256 and >256 μg/mL, respectively. We observed that at least 256 μg/mL of SYP4 is required to exhibit optimal antibacterial activity. At 16-128 μg/mL, it exhibited antibiofilm activity against S. aureus. Furthermore, at 256 μg/mL, SYP4 inhibited pyocyanin in P. aeruginosa and staphyloxanthin in S. aureus. Although SYP2 and SYP3 displayed weak antibacterial activity and their MIC values could not be obtained for all bacteria, they showed strong QS inhibition in C. violaceum at 256 μg protein. Moreover, SYP2 and SYP3, at a minimum concentration of 32 μg/mL, significantly reduced violacein production. SYP3 also showed biofilm reduction activity on S. aureus at least 16-512 μg/mL. Conclusion Sangyod Phatthalung protein hydrolysates exerted excellent inhibitory effects against the growth of bacteria and their virulence factors, such as QS, biofilm formation, and/or pigment production. These factors include zoonotic and foodborne pathogens. Therefore, daily consumption of Sangyod Phatthalung rice might reduce the risk of bacterial pathogenesis and foodborne diseases. In conclusion, functional foods or alternate methods of treating bacterial illnesses may be developed in humans and animals.
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Affiliation(s)
- Prawit Rodjan
- School of Agricultural Technology and Food Industry, Walailak University, Nakhon Si Thammarat, 80160, Thailand
- Center of Excellence in Innovation of Essential Oil and Bio-active Compound, Walailak University, Nakhon Si Thammarat, 80160, Thailand
| | - Suthinee Sangkanu
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai 90112, Songkhla, Thailand
| | - Watcharapong Mitsuwan
- Center of Excellence in Innovation of Essential Oil and Bio-active Compound, Walailak University, Nakhon Si Thammarat, 80160, Thailand
- Akkhraratchakumari Veterinary College, Walailak University, Nakhon Si Thammarat, 80160, Thailand
- One Health Research Center, Walailak University, Nakhon Si Thammarat, 80160, Thailand
| | - Monsicha Pongpom
- Department of Microbiology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Phirabhat Saengsawang
- Akkhraratchakumari Veterinary College, Walailak University, Nakhon Si Thammarat, 80160, Thailand
- One Health Research Center, Walailak University, Nakhon Si Thammarat, 80160, Thailand
| | - Irma Tedja
- Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Victoria 3800, Australia
| | - Jarunet Lamai
- Akkhraratchakumari Veterinary College, Walailak University, Nakhon Si Thammarat, 80160, Thailand
| | - Kritsada Pruksaphon
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat, 80160, Thailand
| | - Juthatip Jeenkeawpieam
- Center of Excellence in Innovation of Essential Oil and Bio-active Compound, Walailak University, Nakhon Si Thammarat, 80160, Thailand
- Akkhraratchakumari Veterinary College, Walailak University, Nakhon Si Thammarat, 80160, Thailand
- One Health Research Center, Walailak University, Nakhon Si Thammarat, 80160, Thailand
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Li Y, Li B, Guo X, Wang H, Cheng L. Applications of quaternary ammonium compounds in the prevention and treatment of oral diseases: State-of-the-art and future directions. J Dent 2023; 137:104678. [PMID: 37634613 DOI: 10.1016/j.jdent.2023.104678] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/18/2023] [Accepted: 08/22/2023] [Indexed: 08/29/2023] Open
Abstract
OBJECTIVES The aim of this review is to comprehensively summarize the state-of-the-art developments of quaternary ammonium compounds (QACs) in the prevention and treatment of oral diseases. By discussing the structural diversity and the potential killing mechanism, we try to offer some insights for the future research of QACs. DATA, SOURCES & STUDY SELECTION A literature search was conducted in electronic databases (Web of Science, PubMed, Medline, and Scopus). Publications that involved the applications of QACs, especially those related to the prevention and treatment of oral diseases, are included. RESULTS We have reviewed the relevant research on QACs over the past two decades. The research results indicate that the current applications are mainly focused on dental material modification and direct pharmacological interventions. Concurrently, challenges such as potential risks to normal tissues and impediments in drug resistance and microbial persistence present certain application constraints. The latest studies have encompassed the exploration of smart materials and nanoparticle formulations. CONCLUSIONS The killing mechanism may possess a threshold related to charge density. However, the exact process remains enigmatic. The structural diversity and the exploration of intelligent materials and nanoparticle formulations provide directions in development of novel QACs. CLINICAL SIGNIFICANCE The intricate oral anatomy, combined with the multifaceted oral microbiome, necessitates specialized materials for the targeted prevention and treatment of oral pathologies. QACs represent a cohort of compounds distinguished by potent anti-infective and anti-tumor attributes. Innovations in intelligent materials and nanoparticle formulations amplify their potential in significantly advancing the prevention and therapeutic interventions for oral diseases.
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Affiliation(s)
- Yiling Li
- State Key Laboratory of Oral Diseases and National Center for Stomatology and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China; Department of Operative Dentistry and Endodontics, West China School of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Bolei Li
- State Key Laboratory of Oral Diseases and National Center for Stomatology and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China; Department of Operative Dentistry and Endodontics, West China School of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Xiao Guo
- State Key Laboratory of Oral Diseases and National Center for Stomatology and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China; Department of Operative Dentistry and Endodontics, West China School of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Haohao Wang
- State Key Laboratory of Oral Diseases and National Center for Stomatology and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China; Department of Operative Dentistry and Endodontics, West China School of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Lei Cheng
- State Key Laboratory of Oral Diseases and National Center for Stomatology and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China; Department of Operative Dentistry and Endodontics, West China School of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China.
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Martorano-Fernandes L, Ricomini-Filho AP, Del Bel Cury AA. Does Streptococcus oralis supernatant influence on the proliferation and virulence of Candida albicans? Arch Oral Biol 2023; 154:105763. [PMID: 37437424 DOI: 10.1016/j.archoralbio.2023.105763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 06/26/2023] [Accepted: 07/05/2023] [Indexed: 07/14/2023]
Abstract
OBJECTIVE To evaluate the influence of Streptococcus oralis supernatant on the proliferation and virulence of Candida albicans. DESIGN S. oralis supernatant was obtained by filtration of overnight cultures. Single or dual-species cultures of C. albicans and S. oralis were cultivated in both planktonic and biofilm-based models. Planktonic culture growth was measured, and mature biofilms formed on resin disks were collected to measure biofilm metabolic activity, total biomass, and cell counts. Hyphae formation (virulence factor) and biofilm thickness were analyzed by confocal laser scanning microscopy. Data were analyzed by a one-way ANOVA test followed by the Tukey posthoc test (α = 0.05). RESULTS We found that S. oralis supernatant did not influence C. albicans proliferation in planktonic cultures. However, biofilms containing S. oralis supernatant showed higher cell metabolism than C. albicans monoculture biofilms and C. albicans-S. oralis dual-culture biofilms (p < 0.05). Though S. oralis supernatants did increase biofilm metabolic activity, they did not affect the total biomass and cell counts of C. albicans (p > 0.05). However, biofilm imaging revealed enhanced C. albicans hyphae formation in biofilms containing S. oralis supernatant compared to C. albicans monoculture biofilms. CONCLUSIONS Secreted metabolites in S. oralis supernatant may contribute to C. albicans metabolism and virulence.
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Affiliation(s)
- Loyse Martorano-Fernandes
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil
| | - Antônio Pedro Ricomini-Filho
- Department of Physiological Science, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil
| | - Altair Antoninha Del Bel Cury
- Department of Physiological Science, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil.
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50
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Byun KH, Kim HJ. Survival strategies of Listeria monocytogenes to environmental hostile stress: biofilm formation and stress responses. Food Sci Biotechnol 2023; 32:1631-1651. [PMID: 37780599 PMCID: PMC10533466 DOI: 10.1007/s10068-023-01427-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 08/29/2023] [Accepted: 08/31/2023] [Indexed: 10/03/2023] Open
Abstract
Listeria monocytogenes is a critical foodborne pathogen that causes listeriosis and threatens public health. This pathogenic microorganism forms a transmission cycle in nature, food industry, and humans, expanding the areas of contamination among them and influencing food safety. L. monocytogenes forms biofilms to protect itself and promotes survival through stress responses to the various stresses (e.g., temperature, pH, and antimicrobial agents) that may be inflicted during food processing. Biofilms and mechanisms of resistance to hostile external or general stresses allow L. monocytogenes to survive despite a variety of efforts to ensure food safety. The current review article focuses on biofilm formation, resistance mechanisms through biofilms, and external specific or general stress responses of L. monocytogenes to help understand the unexpected survival rates of this bacterium; it also proposes the use of obstacle technology to effectively cope with it in the food industry.
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Affiliation(s)
- Kye-Hwan Byun
- Food Safety and Distribution Research Group, Korea Food Research Institute, Jeollabuk-Do, Wanju, 55365 Republic of Korea
| | - Hyun Jung Kim
- Food Safety and Distribution Research Group, Korea Food Research Institute, Jeollabuk-Do, Wanju, 55365 Republic of Korea
- Department of Food Biotechnology, University of Science and Technology, Daejeon, 34113 Republic of Korea
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