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Er-Rahmani S, Errabiti B, Matencio A, Trotta F, Latrache H, Koraichi SI, Elabed S. Plant-derived bioactive compounds for the inhibition of biofilm formation: a comprehensive review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:34859-34880. [PMID: 38744766 DOI: 10.1007/s11356-024-33532-2] [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: 05/21/2023] [Accepted: 04/27/2024] [Indexed: 05/16/2024]
Abstract
Biofilm formation is a widespread phenomenon that impacts different fields, including the food industry, agriculture, health care and the environment. Accordingly, there is a serious need for new methods of managing the problem of biofilm formation. Natural products have historically been a rich source of varied compounds with a wide variety of biological functions, including antibiofilm agents. In this review, we critically highlight and discuss the recent progress in understanding the antibiofilm effects of several bioactive compounds isolated from different plants, and in elucidating the underlying mechanisms of action and the factors influencing their adhesion. The literature shows that bioactive compounds have promising antibiofilm potential against both Gram-negative and Gram-positive bacterial and fungal strains, via several mechanisms of action, such as suppressing the formation of the polymer matrix, limiting O2 consumption, inhibiting microbial DNA replication, decreasing hydrophobicity of cell surfaces and blocking the quorum sensing network. This antibiofilm activity is influenced by several environmental factors, such as nutritional cues, pH values, O2 availability and temperature. This review demonstrates that several bioactive compounds could mitigate the problem of biofilm production. However, toxicological assessment and pharmacokinetic investigations of these molecules are strongly required to validate their safety.
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Affiliation(s)
- Sara Er-Rahmani
- Laboratory of Microbial Biotechnology and Bioactive Molecules, Faculty of Sciences and Technologies, Sidi Mohamed Ben Abdellah University of Fez, Imouzzer Road, 30000, Fez, Morocco
- Department of Chemistry, Nanomaterials for Industry and Sustainability Centre (NIS Centre), Università Di Torino, 10125, Turin, Italy
| | - Badr Errabiti
- Laboratory of Microbial Biotechnology and Bioactive Molecules, Faculty of Sciences and Technologies, Sidi Mohamed Ben Abdellah University of Fez, Imouzzer Road, 30000, Fez, Morocco
| | - Adrián Matencio
- Department of Chemistry, Nanomaterials for Industry and Sustainability Centre (NIS Centre), Università Di Torino, 10125, Turin, Italy
| | - Francesco Trotta
- Department of Chemistry, Nanomaterials for Industry and Sustainability Centre (NIS Centre), Università Di Torino, 10125, Turin, Italy
| | - Hassan Latrache
- Laboratory of Bioprocesses and Bio-Interfaces, Faculty of Science and Technology, Sultan Moulay Slimane University, 23000, Beni Mellal, Morocco
| | - Saad Ibnsouda Koraichi
- Laboratory of Microbial Biotechnology and Bioactive Molecules, Faculty of Sciences and Technologies, Sidi Mohamed Ben Abdellah University of Fez, Imouzzer Road, 30000, Fez, Morocco
| | - Soumya Elabed
- Laboratory of Microbial Biotechnology and Bioactive Molecules, Faculty of Sciences and Technologies, Sidi Mohamed Ben Abdellah University of Fez, Imouzzer Road, 30000, Fez, Morocco.
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2
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Chang G, Yang J, Li X, Liao H, Li S, Hou J, Zhong G, Wang J, Deng M, Xue Y. Iron-modified carriers accelerate biofilm formation and resist anammox bacteria loss in biofilm reactors for partial denitrification-anammox. BIORESOURCE TECHNOLOGY 2024; 394:130223. [PMID: 38113948 DOI: 10.1016/j.biortech.2023.130223] [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: 11/17/2023] [Revised: 12/16/2023] [Accepted: 12/16/2023] [Indexed: 12/21/2023]
Abstract
The slow formation of anammox biofilms presents a bottleneck for resolving anammox bacterial loss and achieving stable performance in biofilm-based partial denitrification-anammox (PD-A) processes. This study utilized iron-modified (K1/Fe3O4 NPs) carriers, which were prepared and used for the first time in PD-A processes. Parallel moving bed biofilm reactors (MBBRs) indicated that iron-modified carriers facilitated the formation of biofilms at a faster rate than K1 carriers, consequently improving the nitrogen removal performance of the process by over 40 %. 16S rDNA analysis showed that anammox bacteria were approximately four times more abundant in the iron-modified carrier biofilm than in the K1 carrier biofilm. XPS and zeta potential analysis suggested that the improved microbial affinity of the iron-modified carrier surface caused this. As a result, the iron-modified carriers facilitated the formation of anammox biofilms and enhanced PD-A performance.
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Affiliation(s)
- Genwang Chang
- State Key Laboratory of Environmental Criteria and Risk Assessment & State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; College of Water Science, Beijing Normal University, Beijing 100875, China
| | - Jinjin Yang
- State Key Laboratory of Environmental Criteria and Risk Assessment & State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Xiang Li
- State Key Laboratory of Environmental Criteria and Risk Assessment & State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
| | - Haiqing Liao
- State Key Laboratory of Environmental Criteria and Risk Assessment & State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; College of Water Science, Beijing Normal University, Beijing 100875, China
| | - Shaokang Li
- State Key Laboratory of Environmental Criteria and Risk Assessment & State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Junhua Hou
- State Key Laboratory of Environmental Criteria and Risk Assessment & State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Genmao Zhong
- State Key Laboratory of Environmental Criteria and Risk Assessment & State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Junjie Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment & State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Mingtao Deng
- State Key Laboratory of Environmental Criteria and Risk Assessment & State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Yiheng Xue
- State Key Laboratory of Environmental Criteria and Risk Assessment & State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
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3
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Farrokhi Y, Neshati Z, Saniee P, Makhdoumi A. The potential of Bacillus and Enterococcus probiotic strains to combat helicobacter pylori attachment to the biotic and abiotic surfaces. Int Microbiol 2023; 26:907-915. [PMID: 36943595 DOI: 10.1007/s10123-023-00347-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: 11/21/2022] [Revised: 12/04/2022] [Accepted: 03/16/2023] [Indexed: 03/23/2023]
Abstract
The prevention of biofilm formation plays a pivotal role in managing Helicobacter pylori inside the body and the environment. This study showed in vitro potentials of two recently isolated probiotic strains, Bacillus sp. 1630F and Enterococcus sp. 7C37, to form biofilm and combat H. pylori attachment to the abiotic and biotic surfaces. Lactobacillus casei and Bifidobacterium bifidum were used as the reference probiotics. The biofilm rates were the highest in the solid-liquid interface for Lactobacillus and Bifidobacterium and the air-liquid interface for Bacillus and Enterococcus. The highest tolerances to the environmental conditions were observed during the biofilm formations of Enterococcus and Bifidobacterium (pH), Enterococcus and Bacillus (bile), and Bifidobacterium and Lactobacillus (NaCl) on the polystyrene and glass substratum, respectively. Biofilms occurred more quickly by Bacillus and Enterococcus strains than reference strains on the polystyrene and glass substratum, respectively. Enterococcus (competition) and Bacillus (exclusion) achieved the most inhibition of H. pylori biofilm formations on the polystyrene and AGS cells, respectively. Expression of luxS was promoted by Bacillus (exclusion, 3.2 fold) and Enterococcus (competition, 2.0 fold). Expression of ropD was decreased when H. pylori biofilm was excluded by Bacillus (0.4 fold) and Enterococcus (0.2 fold) cells. This study demonstrated the ability of Bacillus and Enterococcus probiotic bacteria to form biofilm and combat H. pylori biofilm formation.
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Affiliation(s)
- Yeganeh Farrokhi
- Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Zeinab Neshati
- Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
- Novel Diagnostics and Therapeutics Research Group, Institute of Biotechnology, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Parastoo Saniee
- Department of Microbiology and Microbial Biotechnology, Faculty of Life Science and Biotechnology, Shahid Beheshti University G. C, Tehran, Iran
| | - Ali Makhdoumi
- Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran.
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4
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Shahina Z, Dahms TES. A Simple and Reproducible Stereomicroscopic Method to Assess Fungal Biofilms: Application to Antifungal Susceptibility Testing. Bio Protoc 2023; 13:e4713. [PMID: 37449038 PMCID: PMC10336566 DOI: 10.21769/bioprotoc.4713] [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: 01/30/2023] [Revised: 03/15/2023] [Accepted: 04/24/2023] [Indexed: 07/18/2023] Open
Abstract
Candida albicans, a well-known opportunistic pathogen, is a major cause of human fungal infections. Biofilm formation is considered an important pathogenesis factor. Biofilms are less sensitive to antibiotics and immune responses, allowing them to colonize and persist in host niches. Biofilm screening is important in the identification of anti-biofilm drugs. However, developing nations, with limited financial resources, often do not have access to advanced scientific equipment. Here, we describe an in vitro, protocol using common materials and simple equipment to evaluate static microbial biofilms.
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Affiliation(s)
- Zinnat Shahina
- Department of Chemistry and Biochemistry, University of Regina, 3737 Wascana Parkway, Regina, SK, Canada
| | - Tanya E. S. Dahms
- Department of Chemistry and Biochemistry, University of Regina, 3737 Wascana Parkway, Regina, SK, Canada
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5
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Manville E, Kaya EC, Yucel U, Boyle D, Trinetta V. Evaluation of Listeria monocytogenes biofilms attachment and formation on different surfaces using a CDC biofilm reactor. Int J Food Microbiol 2023; 399:110251. [PMID: 37244228 DOI: 10.1016/j.ijfoodmicro.2023.110251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 05/08/2023] [Accepted: 05/09/2023] [Indexed: 05/29/2023]
Abstract
Listeria monocytogenes can adapt, persist, and form biofilms on food premises surfaces, representing a challenge for food safety, since they led to disease transmission, food contamination and spoilage during production. Physical interventions (scrubbing and wiping) can help controlling formation, nevertheless when biofilms are formed, they are usually very resistant to current control strategies used in the food industry. Biofilm attachment and formation is influenced by environment characteristics, substrate properties and microbial motility. The purpose of this study was to evaluate the ability of L. monocytogenes to attach and form biofilms on different surfaces (wood, nylon, and polycarbonate) representative of the materials used during produce harvesting and storage. Multi-strain L. monocytogenes biofilms were grown in a CDC Biofilm reactor at 20 ± 2 °C up to 96-h and characterized for: a) attachment strength by enumerating cells after rinsing; b) hydrophobicity and interfacial tension by contact angle measurements; c) biofilm architecture by Laser Scanning Confocal Microscopy. All experiments were done in triplicate. Material, incubation, and solvent significantly affected the hydrophobicity and wetting properties of L. monocytogenes biofilms (P < 0.05). The type of material and incubation time significantly influenced hydrophobicity and wetting properties of L. monocytogenes biofilms (P < 0.05). Highest contact angle and lowest interfacial tension were observed on polycarbonate coupons. The data presented contributes to understanding Listeria biofilms grow on different surfaces commonly used in produce harvesting and storage. The data obtained in this study can be used when evaluating intervention strategies to control this pathogen in food premises.
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Affiliation(s)
- E Manville
- Kansas State University, Food Science Institute, 216 Call Hall, Manhattan, KS 66506, USA
| | - E C Kaya
- Kansas State University, Food Science Institute, 216 Call Hall, Manhattan, KS 66506, USA
| | - U Yucel
- Kansas State University, Food Science Institute, 216 Call Hall, Manhattan, KS 66506, USA
| | - D Boyle
- Kansas State University, Division of Biology, 6 Ackert Hall, Manhattan, KS 66503, USA
| | - V Trinetta
- Kansas State University, Food Science Institute, 216 Call Hall, Manhattan, KS 66506, USA.
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6
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Fosca M, Streza A, Antoniac IV, Vadalà G, Rau JV. Ion-Doped Calcium Phosphate-Based Coatings with Antibacterial Properties. J Funct Biomater 2023; 14:jfb14050250. [PMID: 37233360 DOI: 10.3390/jfb14050250] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 04/18/2023] [Accepted: 04/25/2023] [Indexed: 05/27/2023] Open
Abstract
Ion-substituted calcium phosphate (CP) coatings have been extensively studied as promising materials for biomedical implants due to their ability to enhance biocompatibility, osteoconductivity, and bone formation. This systematic review aims to provide a comprehensive analysis of the current state of the art in ion-doped CP-based coatings for orthopaedic and dental implant applications. Specifically, this review evaluates the effects of ion addition on the physicochemical, mechanical, and biological properties of CP coatings. The review also identifies the contribution and additional effects (in a separate or a synergistic way) of different components used together with ion-doped CP for advanced composite coatings. In the final part, the effects of antibacterial coatings on specific bacteria strains are reported. The present review could be of interest to researchers, clinicians, and industry professionals involved in the development and application of CP coatings for orthopaedic and dental implants.
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Affiliation(s)
- Marco Fosca
- Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche (ISM-CNR), Via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | - Alexandru Streza
- Faculty of Material Science and Engineering, University Politehnica of Bucharest, 313 Splaiul Independentei Street, District 6, 060042 Bucharest, Romania
| | - Iulian V Antoniac
- Faculty of Material Science and Engineering, University Politehnica of Bucharest, 313 Splaiul Independentei Street, District 6, 060042 Bucharest, Romania
- Academy of Romanian Scientists, 54 Splaiul Independentei Street, District 5, 050094 Bucharest, Romania
| | - Gianluca Vadalà
- Laboratory of Regenerative Orthopaedics, Research Unit of Orthopaedic, Department of Medicine and Surgery, Università Campus Bio-Medico di Roma, Via Alvaro del Portillo 21, 00128 Rome, Italy
- Operative Research Unit of Orthopaedics, Fondazione Policlinico Universitario Campus Bio-Medico, Via Alvaro del Portillo 200, 00128 Rome, Italy
| | - Julietta V Rau
- Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche (ISM-CNR), Via del Fosso del Cavaliere 100, 00133 Rome, Italy
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7
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Grazul M, Balcerczak E, Sienkiewicz M. Analysis of the Presence of the Virulence and Regulation Genes from Staphylococcus aureus ( S. aureus) in Coagulase Negative Staphylococci and the Influence of the Staphylococcal Cross-Talk on Their Functions. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:5155. [PMID: 36982064 PMCID: PMC10049693 DOI: 10.3390/ijerph20065155] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 03/08/2023] [Accepted: 03/12/2023] [Indexed: 06/18/2023]
Abstract
Coagulase-negative staphylococci (CoNS) are increasingly becoming a public health issue worldwide due to their growing resistance to antibiotics and common involvement in complications related to invasive surgical procedures, and nosocomial and urinary tract infections. Their behavior either as a commensal or a pathogen is a result of strict regulation of colonization and virulence factors. Although functionality of virulence factors and processes involved in their regulation are quite well understood in S. aureus, little is known about them in CoNS species. Therefore, the aim of our studies was to check if clinical CoNS strains may contain virulence factors and genes involved in resistance to methicillin, that are homologous to S. aureus. Moreover, we checked the presence of elements responsible for regulation of genes that encode virulence factors typical for S. aureus in tested isolates. We also investigated whether the regulation factors produced by one CoNS isolate can affect virulence activity of other strains by co-incubation of tested isolates with supernatant from other isolates. Our studies confirmed the presence of virulence factor and regulatory genes attributed to S. aureus in CoNS isolates and indicated that one strain with an active agr gene is able to affect biofilm formation and δ-toxin activity of strains with inactive agr genes. The cognition of prevalence and regulation of virulence factors as well as antibiotic resistance of CoNS isolates is important for better control and treatment of CoNS infections.
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Affiliation(s)
- Magdalena Grazul
- Department of Pharmaceutical Microbiology and Microbiological Diagnostics, Medical University of Lodz, Muszynskiego 1 Street, 90-151 Lodz, Poland
| | - Ewa Balcerczak
- Laboratory of Molecular Diagnostics and Pharmacogenomics, Department of Pharmaceutical Biochemistry and Molecular Diagnostics, Medical University of Lodz, Muszynskiego 1 Street, 90-151 Lodz, Poland
| | - Monika Sienkiewicz
- Department of Pharmaceutical Microbiology and Microbiological Diagnostics, Medical University of Lodz, Muszynskiego 1 Street, 90-151 Lodz, Poland
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8
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Di Domenico EG, Oliva A, Guembe M. The Current Knowledge on the Pathogenesis of Tissue and Medical Device-Related Biofilm Infections. Microorganisms 2022; 10:microorganisms10071259. [PMID: 35888978 PMCID: PMC9322301 DOI: 10.3390/microorganisms10071259] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/13/2022] [Accepted: 06/16/2022] [Indexed: 02/04/2023] Open
Abstract
Biofilm is the trigger for the majority of infections caused by the ability of microorganisms to adhere to tissues and medical devices. Microbial cells embedded in the biofilm matrix are highly tolerant to antimicrobials and escape the host immune system. Thus, the refractory nature of biofilm-related infections (BRIs) still represents a great challenge for physicians and is a serious health threat worldwide. Despite its importance, the microbiological diagnosis of a BRI is still difficult and not routinely assessed in clinical microbiology. Moreover, biofilm bacteria are up to 100–1000 times less susceptible to antibiotics than their planktonic counterpart. Consequently, conventional antibiograms might not be representative of the bacterial drug susceptibility in vivo. The timely recognition of a BRI is a crucial step to directing the most appropriate biofilm-targeted antimicrobial strategy.
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Affiliation(s)
- Enea Gino Di Domenico
- Department of Biology and Biotechnology “C. Darwin”, Sapienza University of Rome, 00185 Rome, Italy;
| | - Alessandra Oliva
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, Italy;
| | - María Guembe
- Department of Clinical Microbiology and Infectious Diseases, Hospital General Universitario Gregorio Marañón, 28007 Madrid, Spain
- Instituto de Investigación Sanitaria Gregorio Marañón, 28007 Madrid, Spain
- Correspondence: ; Tel.: +34-914-269-595
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9
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Hahne F, Jensch S, Hamscher G, Meißner J, Kietzmann M, Kemper N, Schulz J, Mateus-Vargas RH. Innovative Perspectives on Biofilm Interactions in Poultry Drinking Water Systems and Veterinary Antibiotics Used Worldwide. Antibiotics (Basel) 2022; 11:antibiotics11010077. [PMID: 35052954 PMCID: PMC8773231 DOI: 10.3390/antibiotics11010077] [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: 12/16/2021] [Revised: 01/06/2022] [Accepted: 01/07/2022] [Indexed: 11/22/2022] Open
Abstract
Prudent use of antibiotics in livestock is widely considered to be important to prevent antibiotic resistance. This study aimed to evaluate the interactions between biofilms and veterinary antibiotics in therapeutic concentrations administrated via drinking water through a standardized experimental setup. In this context, two biofilms formed by pseudomonads (Pseudomonas (P.) aeruginosa or P. fluorescens) and a susceptible Escherichia (E.) coli strain were developed in a nutrient-poor medium on the inner surface of polyvinyl chloride pipe pieces. Subsequently, developing biofilms were exposed to sulfadiazine/trimethoprim (SDZ/TMP) or tylosin A (TYL A) in dosages recommended for application in drinking water for 5 or 7 days, respectively. Various interactions were detected between biofilms and antibiotics. Microbiological examinations revealed that only TYL A reduced the number of bacteria on the surface of the pipes. Additionally, susceptible E. coli survived both antibiotic treatments without observable changes in the minimum inhibitory concentration to 13 relevant antibiotics. Furthermore, as demonstrated by HPLC-UV, the dynamics of SDZ/TMP and TYL A in liquid media differed between the biofilms of both pseudomonads over the exposure period. We conclude that this approach represents an innovative step toward the effective evaluation of safe veterinary antibiotic use.
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Affiliation(s)
- Friederike Hahne
- Institute of Food Chemistry and Food Biotechnology, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, D-35392 Giessen, Germany; (F.H.); (S.J.); (G.H.)
| | - Simon Jensch
- Institute of Food Chemistry and Food Biotechnology, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, D-35392 Giessen, Germany; (F.H.); (S.J.); (G.H.)
| | - Gerd Hamscher
- Institute of Food Chemistry and Food Biotechnology, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, D-35392 Giessen, Germany; (F.H.); (S.J.); (G.H.)
| | - Jessica Meißner
- Department of Pharmacology, Toxicology and Pharmacy, University of Veterinary Medicine Hannover, Foundation, Bünteweg 17, D-30559 Hannover, Germany; (J.M.); (M.K.); (R.H.M.-V.)
| | - Manfred Kietzmann
- Department of Pharmacology, Toxicology and Pharmacy, University of Veterinary Medicine Hannover, Foundation, Bünteweg 17, D-30559 Hannover, Germany; (J.M.); (M.K.); (R.H.M.-V.)
| | - Nicole Kemper
- Institute for Animal Hygiene, Animal Welfare and Farm Animal Behavior, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, D-30173 Hannover, Germany;
- Correspondence:
| | - Jochen Schulz
- Institute for Animal Hygiene, Animal Welfare and Farm Animal Behavior, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, D-30173 Hannover, Germany;
| | - Rafael H. Mateus-Vargas
- Department of Pharmacology, Toxicology and Pharmacy, University of Veterinary Medicine Hannover, Foundation, Bünteweg 17, D-30559 Hannover, Germany; (J.M.); (M.K.); (R.H.M.-V.)
- Institute for Animal Hygiene, Animal Welfare and Farm Animal Behavior, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, D-30173 Hannover, Germany;
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10
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Khelissa S, El Fannassi Y, Mechmechani S, Alhuthali S, El Amrani MA, Gharsallaoui A, Barras A, Chihib NE. Water-Soluble Ruthenium (II) Complex Derived From Optically Pure Limonene and Its Microencapsulation Are Efficient Tools Against Bacterial Food Pathogen Biofilms: Escherichia coli, Staphylococcus aureus, Enteroccocus faecalis, and Listeria monocytogenes. Front Microbiol 2021; 12:711326. [PMID: 34867839 PMCID: PMC8640646 DOI: 10.3389/fmicb.2021.711326] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 10/14/2021] [Indexed: 11/13/2022] Open
Abstract
Bioactive aminooxime ligands based on optically pure (R)-limonene have been synthesized in two steps. Their ruthenium (II) cationic water-soluble complex was prepared by a reaction between dichloro (para-cymene) ruthenium (II) dimers and aminooxime ligands in a 1:2 molar ratio. Antibacterial and antibiofilm activities of the synthetized complex were assessed against Escherichia coli, Staphylococcus aureus, Listeria monocytogenes, and Enterococcus faecalis. The results revealed that the ruthenium (II) complex has higher antibacterial and antibiofilm activities in comparison with free ligands or the enantiopure (R)-limonene. Moreover, microencapsulation of this complex reduced its cytotoxicity and improved their minimum inhibitory concentration and antibiofilm activity toward the considered bacteria. The ruthenium (II) complex targets the bacterial cell membrane, which leads to rapid leakage of intracellular potassium. Our study suggests that the developed ruthenium (II) complexes could be useful as an alternative to conventional disinfectants.
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Affiliation(s)
- Simon Khelissa
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, Lille, France
| | - Yousra El Fannassi
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, Lille, France.,Université Abdelmalek Essaadi, Faculté des Sciences, Laboratoire de Chimie Organique Appliquée, Tétouan, Morocco
| | - Samah Mechmechani
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, Lille, France
| | - Sakhr Alhuthali
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, Lille, France.,Department of Chemical Engineering, Imperial College London, London, United Kingdom
| | - Mohamed Amin El Amrani
- Université Abdelmalek Essaadi, Faculté des Sciences, Laboratoire de Chimie Organique Appliquée, Tétouan, Morocco
| | - Adem Gharsallaoui
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, LAGEPP UMR 5007, Villeurbanne, France
| | - Alexandre Barras
- Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520-IEMN, Lille, France
| | - Nour-Eddine Chihib
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, Lille, France
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11
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Maurya A, Kumar R, Singh A, Raj A. Investigation on biofilm formation activity of Enterococcus faecium under various physiological conditions and possible application in bioremediation of tannery effluent. BIORESOURCE TECHNOLOGY 2021; 339:125586. [PMID: 34311409 DOI: 10.1016/j.biortech.2021.125586] [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: 05/31/2021] [Revised: 07/10/2021] [Accepted: 07/13/2021] [Indexed: 06/13/2023]
Abstract
Treatment of tannery effluent (TE) using bacterial biofilm is a trending approach in the current scenario, due to greater survival and adaptation in stress conditions. The present study is concerned with the characterization of biofilm-forming bacterium Enterococcus faecium from tannery sludge and the investigation of their activity under different physiological conditions. Biofilm formation by E. faecium was strongly affected by variable physiological conditions. The optimum conditions were pH 7.5, temperature 28 °C, incubation time up to 96 h, glucose 1%, yeast extract 0.1-0.5%, NaCl 0.1-0.5%, tannery effluent-TE up to 50% v/v and Cd, Cr (VI) and Ni from 0.25 to 0.5 mM. Further, E. faecium treated TE was less phytotoxic on the fenugreek plant than the TE treated by non-biofilm forming isolate. The toxicity of TE could be reduced by the potentially biofilm-forming bacteria, which may be used in the bioremediation process.
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Affiliation(s)
- Annapurna Maurya
- Environmental Microbiology Laboratory, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research, Lucknow 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Rajesh Kumar
- Environmental Microbiology Laboratory, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research, Lucknow 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Anjali Singh
- Environmental Microbiology Laboratory, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research, Lucknow 226001, Uttar Pradesh, India
| | - Abhay Raj
- Environmental Microbiology Laboratory, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research, Lucknow 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India.
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12
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Rios-Galacho M, Martinez-Moreno D, López-Ruiz E, Galvez-Martin P, Marchal JA. An overview on the manufacturing of functional and mature cellular skin substitutes. TISSUE ENGINEERING PART B-REVIEWS 2021; 28:1035-1052. [PMID: 34652978 DOI: 10.1089/ten.teb.2021.0131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
There are different types of skin diseases due to chronic injuries that impede the natural healing process of the skin. Tissue engineering (TE) has focused on the development of bioengineered skin or skin substitutes that cover the wound, providing the necessary care to restore the functionality of injured skin. There are two types of substitutes: acellular skin substitutes (ASSs), which offer a low response of the body, and cellular skin substitutes (CSSs), which incorporate living cells and appear as a great alternative in the treatment of skin injuries due to them presenting a greater interaction and integration with the rest of the body. For the development of a CSS, it is necessary to select the most suitable biomaterials, cell components, and methodology of biofabrication for the wound to be treated. Moreover, these CSSs are immature substitutes that must undergo a maturing process in specific bioreactors, guaranteeing their functionality. The bioreactor simulates the natural state of maturation of the skin by controlling parameters such as temperature, pressure, or humidity, allowing a homogeneous maturation of the CSSs in an aseptic environment. The use of bioreactors not only contributes to the maturation of the CSSs, but also offers a new way of obtaining large sections of skin substitutes or natural skin from small portions acquired from the patient, donor, or substitute. Based on the innovation of this technology and the need to develop efficient CSSs, this work offers an update on bioreactor technology in the field of skin regeneration.
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Affiliation(s)
| | | | - Elena López-Ruiz
- Universidad de Jaen, 16747, Department of Health Sciences, Jaen, Andalucía, Spain;
| | | | - Juan Antonio Marchal
- University of Granada, humqn Anatomy and embriology, avd del conocimiento nº 11, Granada, Granada, Spain, 18016;
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13
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Fernández-Grajera M, Pacha-Olivenza MA, Gallardo-Moreno AM, González-Martín ML, Pérez-Giraldo C, Fernández-Calderón MC. Modification of physico-chemical surface properties and growth of Staphylococcus aureus under hyperglycemia and ketoacidosis conditions. Colloids Surf B Biointerfaces 2021; 209:112137. [PMID: 34628126 DOI: 10.1016/j.colsurfb.2021.112137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 08/24/2021] [Accepted: 09/23/2021] [Indexed: 11/26/2022]
Abstract
Diabetes is a widely spread disease affecting the quality of life of millions of people around the world and is associated to a higher risk of developing infections in different parts of the body. The reasons why diabetes enhances infection episodes are not entirely clear; in this study our aim was to explore the changes that one of the most frequently pathogenic bacteria undergoes when exposed to hyperglycemia and ketoacidosis conditions. Physical surface properties such as hydrophobicity and surface electrical charge are related to bacterial growth behavior and the ability of Staphylococcus aureus to form biofilms. The addition of glucose made bacteria more negatively charged and with moderate-intermediate hydrophobicity. Ketone bodies increased hydrophobicity to approximately 75% and pathological concentrations hindered some of the bacterial surface charge by decreasing the negative zeta potential of cells. When both components were present, the bacterial physical surface changes were more similar to those observed in ketone bodies, suggesting a preferential adsorption of ketone bodies over glucose because of the more favorable solubility of glucose in water. Glucose diabetic concentrations gave the highest number of bacteria in the stationary phase of growth and provoked an increase in the biofilm slime index of around 400% in relation to the control state. Also, this situation is related with an increase of bacterial coverage. The combination of a high concentration of glucose and ketone bodies, which corresponds to a poorly controlled diabetic situation, appears associated with an early infection phase; increased hydrophobic attractive force and reduced electrostatic repulsion between cells results in better packing of cells within the biofilm and more efficient retention to the host surface. Knowledge of bacterial response in high amount of glucose and ketoacidosis environments can serve as a basis for designing strategies to prevent bacterial adhesion, biofilm formation and, consequently, the development of infections.
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Affiliation(s)
- María Fernández-Grajera
- University of Extremadura, Department of Applied Physics, Badajoz, Spain; University Institute of Extremadura Sanity Research (INUBE), Badajoz, Spain
| | - Miguel A Pacha-Olivenza
- University Institute of Extremadura Sanity Research (INUBE), Badajoz, Spain; University of Extremadura, Department of Biomedical Science, Badajoz, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Badajoz, Spain.
| | - Amparo M Gallardo-Moreno
- University of Extremadura, Department of Applied Physics, Badajoz, Spain; University Institute of Extremadura Sanity Research (INUBE), Badajoz, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Badajoz, Spain
| | - M Luisa González-Martín
- University of Extremadura, Department of Applied Physics, Badajoz, Spain; University Institute of Extremadura Sanity Research (INUBE), Badajoz, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Badajoz, Spain
| | - Ciro Pérez-Giraldo
- University Institute of Extremadura Sanity Research (INUBE), Badajoz, Spain; University of Extremadura, Department of Biomedical Science, Badajoz, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Badajoz, Spain
| | - M Coronada Fernández-Calderón
- University Institute of Extremadura Sanity Research (INUBE), Badajoz, Spain; University of Extremadura, Department of Biomedical Science, Badajoz, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Badajoz, Spain
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14
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Munir MT, Maneewan N, Pichon J, Gharbia M, Oumarou-Mahamane I, Baude J, Thorin C, Lepelletier D, Le Pape P, Eveillard M, Irle M, Pailhoriès H, Aviat F, Belloncle C, Federighi M, Dubreil L. Confocal spectral microscopy, a non-destructive approach to follow contamination and biofilm formation of mCherry Staphylococcus aureus on solid surfaces. Sci Rep 2021; 11:15574. [PMID: 34341378 PMCID: PMC8329050 DOI: 10.1038/s41598-021-94939-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 07/01/2021] [Indexed: 01/23/2023] Open
Abstract
Methods to test the safety of wood material for hygienically sensitive places are indirect, destructive and limited to incomplete microbial recovery via swabbing, brushing and elution-based techniques. Therefore, we chose mCherry Staphylococcus aureus as a model bacterium for solid and porous surface contamination. Confocal spectral laser microscope (CSLM) was employed to characterize and use the autofluorescence of Sessile oak (Quercus petraea), Douglas fir (Pseudotsuga menziesii) and poplar (Populus euramericana alba L.) wood discs cut into transversal (RT) and tangential (LT) planes. The red fluorescent area occupied by bacteria was differentiated from that of wood, which represented the bacterial quantification, survival and bio-distribution on surfaces from one hour to one week after inoculation. More bacteria were present near the surface on LT face wood as compared to RT and they persisted throughout the study period. Furthermore, this innovative methodology identified that S. aureus formed a dense biofilm on melamine but not on oak wood in similar inoculation and growth conditions. Conclusively, the endogenous fluorescence of materials and the model bacterium permitted direct quantification of surface contamination by using CSLM and it is a promising tool for hygienic safety evaluation.
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Affiliation(s)
| | | | - Julien Pichon
- UMR703 PAnTher APEX, INRAE/ONIRIS - La Chantrerie, 101 Route de Gachet, 44307, Nantes, France
| | | | | | - Jessica Baude
- CIRI, Inserm U1111, Lyon 1 University, ENS Lyon, CNRS UMR 5308, Lyon, France
| | | | | | - Patrice Le Pape
- EA 1155 IICiMed, IRS 2, University of Nantes, 44200, Nantes, France
| | - Matthieu Eveillard
- CRCINA, Inserm, University of Nantes, University of Angers, 44200, Angers, France.,Laboratory of Bacteriology-Hygiene, University Hospital of Angers, 49933, Angers, France
| | - Mark Irle
- LIMBHA, Ecole Supérieure du Bois, 44000, Nantes, France
| | - Hélène Pailhoriès
- Laboratory of Bacteriology-Hygiene, University Hospital of Angers, 49933, Angers, France.,HIFIH, UPRES EA3859, SFR 4208, University of Angers, Angers, France
| | - Florence Aviat
- Your ResearcH-Bio-Scientific, 44430, Le Landreau, France
| | | | | | - Laurence Dubreil
- UMR703 PAnTher APEX, INRAE/ONIRIS - La Chantrerie, 101 Route de Gachet, 44307, Nantes, France.
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15
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Twomey E, Hill C, Field D, Begley M. Recipe for Success: Suggestions and Recommendations for the Isolation and Characterisation of Bacteriocins. Int J Microbiol 2021; 2021:9990635. [PMID: 34257667 PMCID: PMC8249226 DOI: 10.1155/2021/9990635] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 05/17/2021] [Accepted: 06/09/2021] [Indexed: 12/29/2022] Open
Abstract
Bacteriocins are bacterially produced antimicrobial peptides. Although only two peptides have been approved for use as natural preservatives foods, current research is focusing on expanding their application as potential therapeutics against clinical pathogens. Our laboratory group has been working on bacteriocins for over 25 years, and during that time, we have isolated bacteriocin-producing microorganisms from a variety of sources including human skin, human faeces, and various foods. These bacteriocins were purified and characterised, and their potential applications were examined. We have also identified bioengineered derivatives of the prototype lantibiotic nisin which possess more desirable properties than the wild-type, such as enhanced antimicrobial activity. In the current communication, we discuss the main methods that were employed to identify such peptides. Furthermore, we provide a step-by-step guide to carrying out these methods that include accompanying diagrams. We hope that our recommendations and advice will be of use to others in their search for, and subsequent analysis of, novel bacteriocins, and derivatives thereof.
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Affiliation(s)
- Ellen Twomey
- Department of Biological Sciences, Munster Technological University, Cork T12 P928, Ireland
| | - Colin Hill
- School of Microbiology, University College Cork, Cork T12YT20, Ireland
- APC Microbiome Ireland, University College Cork, Cork T12YT20, Ireland
| | - Des Field
- School of Microbiology, University College Cork, Cork T12YT20, Ireland
- APC Microbiome Ireland, University College Cork, Cork T12YT20, Ireland
| | - Máire Begley
- Department of Biological Sciences, Munster Technological University, Cork T12 P928, Ireland
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16
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Guedes GMM, Santos-Filho ASP, Regis WFM, Ocadaque CJ, Amando BR, Sidrim JJC, Brilhante RSN, Cordeiro RA, Bandeira SP, Rocha MFG, Castelo-Branco DSCM. Ex situ model of biofilm-associated wounds: providing a host-like environment for the study of Staphylococcus aureus and Pseudomonas aeruginosa biofilms. J Appl Microbiol 2021; 131:1487-1497. [PMID: 33556197 DOI: 10.1111/jam.15026] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 01/17/2021] [Accepted: 02/02/2021] [Indexed: 12/20/2022]
Abstract
AIM This study aimed to assess an ex situ model of biofilm-associated wounds on porcine skin for the study of Staphylococcus aureus and Pseudomonas aeruginosa biofilms in a host-like environment, after 48 to 120 h of incubation. MATERIAL AND RESULTS Ex situ and in vitro biofilms were comparatively analysed. Overall, CFU-counts and matrix quantification yielded significantly (P < 0·05) higher results for ex situ than in vitro biofilms. Confocal microscopy revealed greater (P < 0·05) biomass and thickness at 48-72 h and greater (P < 0·05) robustness at 72 h of growth. S. aureus ex situ biofilms produced less (P < 0·05) siderophore and proteases than in vitro biofilms, while P. aeruginosa ex situ biofilms produced more (P < 0·05) siderophores and less proteases than in vitro biofilms. CONCLUSIONS Biofilms grown ex situ present a greater amount of bacterial cells and polymeric matrix than their in vitro counterparts, reaching maturity at 72 h of growth. Moreover the production of virulence factors differs between ex situ and in vitro biofilms. SIGNIFICANCE AND IMPACT OF THE STUDY These findings emphasize the importance of using ex situ biofilm models, once they mimic in vivo conditions. The use of these models brings perspectives for the pursuit of therapeutic alternatives, as tests may be performed in a host-like environment.
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Affiliation(s)
- G M M Guedes
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Group of Applied Medical Microbiology, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - A S P Santos-Filho
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Group of Applied Medical Microbiology, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - W F M Regis
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Group of Applied Medical Microbiology, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - C J Ocadaque
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Group of Applied Medical Microbiology, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - B R Amando
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Group of Applied Medical Microbiology, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - J J C Sidrim
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Specialized Medical Mycology Center, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - R S N Brilhante
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Specialized Medical Mycology Center, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - R A Cordeiro
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Specialized Medical Mycology Center, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - S P Bandeira
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Specialized Medical Mycology Center, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - M F G Rocha
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Specialized Medical Mycology Center, Federal University of Ceará, Fortaleza, Ceará, Brazil.,Postgraduate Program in Veterinary Sciences, College of Veterinary, State University of Ceará, Fortaleza, Ceará, Brazil
| | - D S C M Castelo-Branco
- Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Group of Applied Medical Microbiology, Federal University of Ceará, Fortaleza, Ceará, Brazil.,Department of Pathology and Legal Medicine, Postgraduate Program in Medical Microbiology, Specialized Medical Mycology Center, Federal University of Ceará, Fortaleza, Ceará, Brazil
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17
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Thermal and non-thermal treatment effects on Staphylococcus aureus biofilms formed at different temperatures and maturation periods. Food Res Int 2020; 137:109432. [PMID: 33233114 DOI: 10.1016/j.foodres.2020.109432] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 05/30/2020] [Accepted: 06/09/2020] [Indexed: 11/20/2022]
Abstract
The objective of this study was to investigate the effect of temperature and maturation period on the resistance of Staphylococcus aureus biofilms to thermal and non-thermal treatments. First, biofilm development was compared at three different temperatures (15, 25, and 37°C) for 5 days. The cell population at 15 and 25°C remained relatively consistent approximately at 6.3 log CFU/cm2, whereas 37°C resulted in the highest cell population on day 1 (7.6 log CFU/cm2) followed by a continual decline. Then, biofilm resistance to steam and sodium hypochlorite (NaOCl) treatments was evaluated. Obtained results highlighted that biofilms had different resistance to both treatments depending on development conditions. Specifically, steam treatment of 10 s eliminated 4.1 log CFU/cm2 of the biofilm formed at 25°C for 5 days. The same treatment inactivated over 5 log population of biofilms developed in other temperature and maturation period conditions. Treatment with NaOCl reduced approximately 1 log CFU/cm2 of biofilm cells developed at 25°C for 5 days. However, inactivation was found to be over 2 log CFU/cm2 under other development conditions. An extracellular polymeric substances (EPS) quantification using 96-well plates and stainless steel coupons was conducted. In the 96-well plate experiment, it was found that the highest amount of polysaccharide was secreted at 25°C (p < 0.05), while total biomass and protein contents were greatest at 37°C (p < 0.05). No significant difference in EPS content was observed for stainless steel, but the results displayed a similar trend to the 96-well plate. In particular, biofilms developed at 25°C tended to secret the highest amount of polysaccharide, which aligned with the current literature. This finding indicated that polysaccharide was the main contribution to the enhanced resistance of S. aureus biofilms. Overall, it was shown that biofilms formed at 25°C for 5 days exhibited the greatest resistance to thermal and nonthermal treatments due to the elevated exopolysaccharide secretion. This study demonstrates that temperature and maturation period significantly affect the resistance of S. aureus biofilms to thermal and non-thermal treatments.
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18
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Antibacterial and Antivirulence Activity of Manuka Honey against Genetically Diverse Staphylococcus pseudintermedius Strains. Appl Environ Microbiol 2020; 86:AEM.01768-20. [PMID: 32801179 PMCID: PMC7531947 DOI: 10.1128/aem.01768-20] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 07/28/2020] [Indexed: 12/21/2022] Open
Abstract
Staphylococcus pseudintermedius is an important member of the skin microbial community in animals and can cause opportunistic infections in both pets and their owners. The high incidence of antimicrobial resistance in S. pseudintermedius highlights that this opportunistic zoonotic pathogen can cause infections which require prolonged and intensive treatment to resolve. Manuka honey has proven efficacy against many bacterial pathogens and is an accepted topical treatment for infections in both veterinary and clinical practice, and so it is a particularly appropriate antimicrobial for use with zoonotic pathogens such as S. pseudintermedius. Here, we demonstrate that not only is manuka honey highly potent against novel multidrug-resistant S. pseudintermedius isolates, it also acts synergistically with clinically relevant antibiotics. In addition, manuka honey modulates S. pseudintermedius virulence activity, even at subinhibitory concentrations. In a clinical setting, these attributes may assist in controlling infection, allowing a more rapid resolution and reducing antibiotic use. Staphylococcus pseudintermedius causes opportunistic infections in dogs. It also has significant zoonotic potential, with the emergence of multidrug resistance leading to difficulty treating both animal and human infections. Manuka honey has previously been reported to inhibit many bacterial pathogens, including methicillin-resistant Staphylococcus aureus, and is successfully utilized in both clinical and veterinary practice. Here, we evaluated the ability of manuka honey to inhibit strains of S. pseudintermedius grown alone and in combination with antibiotics, as well as its capacity to modulate virulence within multiple S. pseudintermedius isolates. All 18 of the genetically diverse S. pseudintermedius strains sequenced and tested were inhibited by ≤12% (wt/vol) medical-grade manuka honey, although tolerance to five clinically relevant antibiotics was observed. The susceptibility of the isolates to four of these antibiotics was significantly increased (P ≤ 0.05) when combined with sublethal concentrations of honey, although sensitivity to oxacillin was decreased. Virulence factor (DNase, protease, and hemolysin) activity was also significantly reduced (P ≤ 0.05) in over half of isolates when cultured with sublethal concentrations of honey (13, 9, and 10 isolates, respectively). These findings highlight the potential for manuka honey to be utilized against S. pseudintermedius infections. IMPORTANCEStaphylococcus pseudintermedius is an important member of the skin microbial community in animals and can cause opportunistic infections in both pets and their owners. The high incidence of antimicrobial resistance in S. pseudintermedius highlights that this opportunistic zoonotic pathogen can cause infections which require prolonged and intensive treatment to resolve. Manuka honey has proven efficacy against many bacterial pathogens and is an accepted topical treatment for infections in both veterinary and clinical practice, and so it is a particularly appropriate antimicrobial for use with zoonotic pathogens such as S. pseudintermedius. Here, we demonstrate that not only is manuka honey highly potent against novel multidrug-resistant S. pseudintermedius isolates, it also acts synergistically with clinically relevant antibiotics. In addition, manuka honey modulates S. pseudintermedius virulence activity, even at subinhibitory concentrations. In a clinical setting, these attributes may assist in controlling infection, allowing a more rapid resolution and reducing antibiotic use.
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19
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Anjum MM, Patel KK, Dehari D, Pandey N, Tilak R, Agrawal AK, Singh S. Anacardic acid encapsulated solid lipid nanoparticles for Staphylococcus aureus biofilm therapy: chitosan and DNase coating improves antimicrobial activity. Drug Deliv Transl Res 2020; 11:305-317. [PMID: 32519201 DOI: 10.1007/s13346-020-00795-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Biofilm mediated bacterial infections are the key factors in the progression of infectious diseases due to the evolution of antimicrobial resistance. Traditional therapy involving antibiotics is not adequate enough for treatment of such infections due to the increased resistance triggered by biofilm. To overcome this challenge, we developed anacardic acid (Ana) loaded solid lipid nanoparticles (SLNs), further coated with chitosan and DNase (Ana-SLNs-CH-DNase). The DNase coating was hypothesized to degrade the e-DNA, while chitosan was coated to yield positively charged SLNs with additional adhesion to biofilms. The SLNs were developed using homogenization method and further evaluated for particle size, polydispersity index, zeta potential, and entrapment efficiency. Drug excipient compatibility was confirmed by using FT-IR study, while encapsulation of Ana in SLNs was confirmed by X-ray diffraction study. The SLNs demonstrated sustained release for up to 24 h and excellent stability at room temperature for up to 3 months. The developed SLNs were found non-toxic against human immortalized keratinocyte (HaCaT) cells while demonstrated remarkably higher antimicrobial efficacy against Staphylococcus aureus. Excellent effect of the developed SLNs on minimum biofilm inhibition concentration and minimum biofilm eradication concentration further confirmed the superiority of the developed formulation strategy. A significant (p < 0.05) reduction in biofilm thickness and biomass, as confirmed by confocal laser scanning microscopy, was observed in the case of developed SLNs in comparison with control. Cumulatively, the results suggest the enhanced efficacy of the developed formulation strategy to overcome the biofilm-mediated antimicrobial resistance. Graphical abstract.
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Affiliation(s)
- Md Meraj Anjum
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh, 221005, India
| | - Krishna Kumar Patel
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh, 221005, India
| | - Deepa Dehari
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh, 221005, India
| | - Nidhi Pandey
- Department of Microbiology, Institute of Medical Sciences (Banaras Hindu University), Varanasi, Uttar Pradesh, 221005, India
| | - Ragini Tilak
- Department of Microbiology, Institute of Medical Sciences (Banaras Hindu University), Varanasi, Uttar Pradesh, 221005, India
| | - Ashish Kumar Agrawal
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh, 221005, India.
| | - Sanjay Singh
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh, 221005, India.
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20
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Khelissa SO, Abdallah M, Jama C, Barras A, Chihib NE. Comparative Study on the Impact of Growth Conditions on the Physiology and the Virulence of Pseudomonas aeruginosa Biofilm and Planktonic Cells. J Food Prot 2019; 82:1357-1363. [PMID: 31313963 DOI: 10.4315/0362-028x.jfp-18-565] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The aim of the present work was to study and compare the effect of growth temperature (20, 30, and 37°C) and surface type (stainless steel and polycarbonate) on the production of virulence factors, such as proteases and siderophores, and the risk of surface contamination associated with Pseudomonas aeruginosa biofilm and planktonic cells. The increase of growth temperature from 20 to 37°C increased (approximately twofold) the electronegative charge and the hydrophobicity of the P. aeruginosa biofilm cell surface. P. aeruginosa biofilm cell adhesion to stainless steel and polycarbonate was 5- and 1.5-fold higher than their planktonic counterparts at 20 and 30°C, respectively. The increase of growth temperature from 20 to 37°C increased the production of proteases (twofold) and siderophores (twofold) and the cytotoxicity (up to 30-fold) against the HeLa cell line in the supernatants of P. aeruginosa planktonic and biofilm cultures. This study also highlighted that biofilm and planktonic P. aeruginosa cells exhibited distinct physiological properties with respect to the production of virulence factors and the cytotoxicity against the Hela cell line. Therefore, effective disinfection procedures should be adapted to inactivate bacteria detached from biofilms.
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Affiliation(s)
- Simon Oussama Khelissa
- 1 Universite´ de Lille, Centre National de la Recherche Scientifique (CNRS), Institut National de la Recherche Agronomique (INRA), École Nationale Supérieure de Chimie de Lille (ENSCL), Unités Mixtes de Recherche (UMR) 8207-Unité Matériaux et Transformations (UMET)-Processus aux Interfaces et Hygiène des Matériaux (PIHM), 59000 Lille, France
| | - Marwan Abdallah
- 1 Universite´ de Lille, Centre National de la Recherche Scientifique (CNRS), Institut National de la Recherche Agronomique (INRA), École Nationale Supérieure de Chimie de Lille (ENSCL), Unités Mixtes de Recherche (UMR) 8207-Unité Matériaux et Transformations (UMET)-Processus aux Interfaces et Hygiène des Matériaux (PIHM), 59000 Lille, France
| | - Charafeddine Jama
- 2 Universite´ de Lille, CNRS, INRA, ENSCL, UMR 8207-UMET-ISP (Inge´nierie des Syste`me Polyme`res), 59000 Lille, France
| | - Alexandre Barras
- 3 Université de Lille, CNRS, Centrale Lille, Institut Supérieur de l'Électronique et du Numérique (ISEN), Université de Valenciennes, UMR 8520-Institut d' Électronique, de Microélectronique et de Nanotechnologie (IEMN), 59000 Lille, France
| | - Nour-Eddine Chihib
- 1 Universite´ de Lille, Centre National de la Recherche Scientifique (CNRS), Institut National de la Recherche Agronomique (INRA), École Nationale Supérieure de Chimie de Lille (ENSCL), Unités Mixtes de Recherche (UMR) 8207-Unité Matériaux et Transformations (UMET)-Processus aux Interfaces et Hygiène des Matériaux (PIHM), 59000 Lille, France
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21
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Tahmasebi H, Dehbashi S, Arabestani MR. Association between the accessory gene regulator (agr) locus and the presence of superantigen genes in clinical isolates of methicillin-resistant Staphylococcus aureus. BMC Res Notes 2019; 12:130. [PMID: 30871616 PMCID: PMC6419358 DOI: 10.1186/s13104-019-4166-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 03/06/2019] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVE Methicillin-resistant Staphylococcus aureus cause to a variety of hard to cure infections. MRSA isolates also, produce an arsenal of virulence factors contribute to severe infections. The aim of this study was to find out the relationship between agr locus and presence of S. aureus superantigens (SAgs). RESULTS Clinical isolates in two groups from two different states of Iran were collected. Antibiotic resistance patterns, agr typing, and virulence factor genes prevalence were identified and relationship between them was analyzed using SPSS software version16. Most of the samples were collected from wound 39 isolates in Group 1 and 61 isolates in Group 2. Frequency of MRSA strains was 38.1% in Group 1 and 52.1% in Group 2. Also, the most common resistance among both groups was to penicillin. agr positive isolates were detected in 132 isolates of Group 1 and 104 isolates of Group 2. In Conclusion, a significant relationship between the SAgs frequency and agr locus in both groups has been indicated. The production of superantigens in S. aureus plays an important role in the classification of agr locus, and this locus can affect differently in methicillin-resistant strains.
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Affiliation(s)
- Hamed Tahmasebi
- Microbiology Department, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Sanaz Dehbashi
- Microbiology Department, Faculty of Medicine, Hamadan University of Medical Sciences, Pajoohesh Junction, Hamadan, Iran
| | - Mohammad Reza Arabestani
- Department of Microbiology, School of Medicine, University of Hamadan, Hamadan, Iran. .,Brucellosis Research Center, Hamadan University of Medical Sciences, Hamadan, Iran.
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Impact of growth temperature on the adhesion of colistin-resistant Escherichia coli strains isolated from pigs to food-contact-surfaces. Arch Microbiol 2019; 201:679-690. [DOI: 10.1007/s00203-019-01632-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 02/07/2019] [Accepted: 02/13/2019] [Indexed: 01/28/2023]
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Comparative study of growth temperature impact on the susceptibility of biofilm-detached and planktonic Staphylococcus aureus cells to benzalkonium chloride. ANN MICROBIOL 2018. [DOI: 10.1007/s13213-018-1419-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Khelissa SO, Jama C, Abdallah M, Boukherroub R, Faille C, Chihib NE. Correction to: Effect of incubation duration, growth temperature, and abiotic surface type on cell surface properties, adhesion and pathogenicity of biofilm-detached Staphylococcus aureus cells. AMB Express 2017; 7:216. [PMID: 29209869 PMCID: PMC5716960 DOI: 10.1186/s13568-017-0509-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 11/15/2017] [Indexed: 11/10/2022] Open
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