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Santana da Costa T, Delgado GG, Braga CB, Tasic L. Insights into the fungal secretomes and their roles in the formation and stabilization of the biogenic silver nanoparticles. RSC Adv 2025; 15:6938-6951. [PMID: 40041383 PMCID: PMC11877120 DOI: 10.1039/d4ra07962k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2024] [Accepted: 02/18/2025] [Indexed: 03/06/2025] Open
Abstract
The biosynthesis of silver nanoparticles (AgNPs) using biological systems has emerged as a promising alternative to traditional chemical methods, providing eco-friendly solutions in nanotechnology. This study investigates the secretomes of two strains of Fusarium oxysporum (VR039 and 07SD) to synthesize AgNPs (AgNP@Fo VR039 and AgNP@Fo 07SD), characterized by similar sizes of 35.4 ± 12.4 nm and 28.6 ± 9.5 nm, respectively. We conducted proteomic analysis via mass spectrometry on both secretomes and nanoparticles, identifying proteins involved in the biosynthesis, stabilization, and antimicrobial activity of the nanoparticles. Our results indicate notable similarities in the proteomes of both nanoparticles and their respective secretomes, correlating with similar antimicrobial efficacy against Staphylococcus aureus and Escherichia coli, as demonstrated through bacterial growth inhibition assays. The presence of redox proteins, such as glyceraldehyde reductase and FAD-oxidoreductase, suggests a potential mechanism for the generation of reactive oxygen species (ROS) and oxidative stress in bacterial cells, further validated by fluorescence microscopy to differentiate viable from non-viable cells. Unlike previous studies that have focused separately on metal ion reduction or nanoparticle stabilization, our findings reveal a coordinated biosynthetic process where the same proteins mediate both functions. This overlap between the secretome and nanoparticle proteome provides new insights into fungal-mediated nanoparticle synthesis, highlighting the multifunctionality of fungal proteins in bionanotechnology. By demonstrating how secreted enzymes directly contribute to nanoparticle formation, this study paves the way for more efficient, scalable, and environmentally sustainable approaches to biogenic nanoparticle production.
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Affiliation(s)
- Thyerre Santana da Costa
- Institute of Chemistry, Biological Chemistry Laboratory, Universidade Estadual de Campinas, UNICAMP Campinas SP 13083-970 Brazil
| | - Gonzalo García Delgado
- Institute of Chemistry, Biological Chemistry Laboratory, Universidade Estadual de Campinas, UNICAMP Campinas SP 13083-970 Brazil
| | - Carolyne Brustolin Braga
- Institute of Chemistry, Biological Chemistry Laboratory, Universidade Estadual de Campinas, UNICAMP Campinas SP 13083-970 Brazil
| | - Ljubica Tasic
- Institute of Chemistry, Biological Chemistry Laboratory, Universidade Estadual de Campinas, UNICAMP Campinas SP 13083-970 Brazil
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2
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Xu Z, Wu J, Lovely B, Li Y, Ponder M, Waterman K, Kim YT, Shuai D, Yin Y, Huang H. Visible light-activated dye-sensitized TiO 2 antibacterial film: A novel strategy for enhancing food safety and quality. JOURNAL OF HAZARDOUS MATERIALS 2024; 480:136296. [PMID: 39481262 DOI: 10.1016/j.jhazmat.2024.136296] [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: 08/11/2024] [Revised: 10/21/2024] [Accepted: 10/24/2024] [Indexed: 11/02/2024]
Abstract
Antibacterial packaging holds promise in addressing food spoilage by inactivating bacteria, but current antimicrobial packaging solutions face challenges like depletion of antibacterials and concerns of antibiotic abuse. In response to these limitations of existing packaging materials, we developed a novel antibacterial packaging film by incorporating titanium dioxide (TiO2)- tetra(4-carboxyphenyl) porphyrin (TcPP) conjugates into cellulose nanofibrils (CNF) films. Unlike conventional antimicrobial packaging, this film harnesses visible light energy to excite electrons from TcPP to TiO2, generating reactive oxygen species (ROS) that inactivate bacteria without relying on antibiotics. Results demonstrated that the film reduced 4.5, 4.6, 4.1, and 4.7-log Escherichia coli, Pseudomonas fluorescens, Leuconostoc lactis, and Listeria innocua, respectively, in phosphate-buffered saline within 72 h under 6000 lux light (3.13 mW/cm2). The antimicrobial efficacy decreased as the light intensity decreased. Notably, it retains significant antimicrobial properties even under an extremely low light intensity of 600 lux (0.60 mW/cm2). The analysis also revealed that singlet oxygen and hydrogen peroxide are the major generated ROS from the film under light exposure. When applied to cucumbers, the film reduced E. coli by 3.5 logs after 48-hour light exposure. The designed photocatalytic antibacterial film represents a major advancement in sustainable food preservation, reducing food waste by extending the shelf life of fresh produce.
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Affiliation(s)
- Zhiyuan Xu
- Department of Food Science and Technology, Virginia Tech, Blacksburg, VA 24060, United States
| | - Jian Wu
- Department of Food Science and Technology, Virginia Tech, Blacksburg, VA 24060, United States
| | - Belladini Lovely
- Department of Sustainable Biomaterials, Virginia Tech, Blacksburg, VA 24060, United States
| | - Yilin Li
- Department of Food Science and Technology, Virginia Tech, Blacksburg, VA 24060, United States
| | - Monica Ponder
- Department of Food Science and Technology, Virginia Tech, Blacksburg, VA 24060, United States
| | - Kim Waterman
- Department of Food Science and Technology, Virginia Tech, Blacksburg, VA 24060, United States
| | - Young-Teck Kim
- Department of Sustainable Biomaterials, Virginia Tech, Blacksburg, VA 24060, United States
| | - Danmeng Shuai
- Department of Civil & Environmental Engineering, The George Washington University, Washington, D.C., 20052, United States
| | - Yun Yin
- Department of Food Science and Technology, Virginia Tech, Blacksburg, VA 24060, United States
| | - Haibo Huang
- Department of Food Science and Technology, Virginia Tech, Blacksburg, VA 24060, United States.
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3
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Sarkar P, Pugazhendhi AS, Coathup M, Mukhopadhyay K. Antibacterial sponge for rapid noncompressible hemostatic treatment: spatiotemporal studies using a noninvasive model. Biomater Sci 2024; 12:4155-4169. [PMID: 38916074 DOI: 10.1039/d4bm00506f] [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: 06/26/2024]
Abstract
Hemorrhage is one of the leading causes of preventable death. While minor injuries can be treated mainly by conventional methods, deep and irregular wounds with profuse bleeding present significant challenges, some of which can be life-threatening and fatal. This underscores the need to develop easily applicable FDA-approved hemostatic treatments that can effectively stanch blood loss at the point of care before professional medical care. A silicone-based bandage system (SilFoam), a non-compressible, self-expanding, antibacterial hemostatic treatment, is reported here. Its two-component system reacts in situ upon mixing to form a stretchable sponge that acts as a 'tamponade' by expanding within seconds with the evolution of oxygen gas from the interaction of the reactive components present in the formulation. This generates autogenous pressure on the wound that can effectively arrest heavy bleeding within minutes. Possessing optimal adhesive properties, the expanded sponge can be easily removed, rendering it optimal for hemostatic wound dressing. With recent advances in biotechnological research, there is a growing awareness of the potential issues associated with in vivo trials, spanning ethical, psychological, economic, and physiological concerns like burnout and fatigue. Bearing this in mind, a unique manikin system simulating a deep abdominal wound has been employed to investigate SilFoam's hemostatic efficacy with different blood-flow rates using a non-invasive model that aims to provide an easy, fast, and economical route to test hemostatic treatments before in vivo studies. This is the first time an Ag2O-based oxygen-induced foaming system has been reported as a hemostatic agent.
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Affiliation(s)
- Pritha Sarkar
- Department of Materials Science and Engineering, University of Central Florida, Orlando, USA.
| | | | - Melanie Coathup
- Biionix Cluster and College of Medicine, University of Central Florida, Orlando, USA
| | - Kausik Mukhopadhyay
- Department of Materials Science and Engineering, University of Central Florida, Orlando, USA.
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4
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Al-Sawarees DK, Darwish RM, Abu-Zurayk R, Masri MA. Assessing silver nanoparticle and antimicrobial combinations for antibacterial activity and biofilm prevention on surgical sutures. J Appl Microbiol 2024; 135:lxae063. [PMID: 38471695 DOI: 10.1093/jambio/lxae063] [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: 10/27/2023] [Revised: 01/28/2024] [Accepted: 03/11/2024] [Indexed: 03/14/2024]
Abstract
AIMS To evaluate the effect of silver nanoparticles alone and in combination with Triclosan, and trans-cinnamaldehyde against Staphylococcus aureus and Escherichia coli biofilms on sutures to improve patients' outcomes. METHODS AND RESULTS Silver nanoparticles were prepared by chemical method and characterized by UV-visible spectrophotometer and dynamic light scattering. The minimum inhibitory concentration was assessed by the Microdilution assay. The antibiofilm activity was determined using crystal violet assay. A checkerboard assay using the fractional inhibitory concentration index and time-kill curve was used to investigate the synergistic effect of silver nanoparticle combinations. The hemolytic activity was determined using an erythrocyte hemolytic assay. Our results revealed that silver nanoparticles, Triclosan, and trans-cinnamaldehyde (TCA) inhibited S.aureus and E.coli biofilms. Silver nanoparticles with TCA showed a synergistic effect (FICI values 0.35 and 0.45 against S. aureus and E. coli biofilms, respectively), and silver nanoparticles with Triclosan showed complete inhibition of S. aureus biofilm. The hemolytic activity was <2.50% for the combinations.
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Affiliation(s)
- Diana K Al-Sawarees
- Department of Pharmaceutics and Pharmaceutical Technology, School of Pharmacy, University of Jordan, Amman 11942, Jordan
| | - Rula M Darwish
- Department of Pharmaceutics and Pharmaceutical Technology, School of Pharmacy, University of Jordan, Amman 11942, Jordan
| | - Rund Abu-Zurayk
- Hamdi Mango Center for Scientific Research, The University of Jordan, Amman 11942, Jordan
| | - Mahmoud Al Masri
- King Hussain Cancer center, Surgery Department, Amman 11941, Jordan
- School of Medicine, The University of Jordan, Amman 11942, Jordan
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5
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Xiang S, Zhang C, Guan Z, Li X, Liu Y, Feng G, Luo X, Zhang B, Weng J, Xiao D. Preparation of a novel antibacterial magnesium carbonate coating on a titanium surface and its in vitro biocompatibility. RSC Adv 2024; 14:10516-10525. [PMID: 38567331 PMCID: PMC10985587 DOI: 10.1039/d4ra00399c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 03/25/2024] [Indexed: 04/04/2024] Open
Abstract
Magnesium-based coatings have attracted great attention in surface modification of titanium implants due to their superior angiogenic and osteogenic properties. However, their biological effects as a carbonate-based constituent remain unrevealed. In this study, magnesium carbonate coatings were prepared on titanium surfaces under hydrothermal conditions and subsequently treated with hydrogen peroxide. Also, their antibacterial activity and in vitro cell biocompatibility were evaluated. The obtained coatings consisted of nanoparticles without cracks and exhibited excellent adhesion to the substrate. X-ray diffraction (XRD) results indicated pure magnesium carbonate coatings formed on the Ti surface after hydrothermal treatment. After hydrogen peroxide treatment, the phase composition of the coatings had no obvious change. Compared to the untreated coatings, the hydrogen peroxide-treated coatings showed increased surface roughness and hydrophilicity. Co-culture with Staphylococcus aureus (S. aureus) demonstrated that the obtained coatings had good antibacterial activity. In vitro cell culture results showed that the hydrogen peroxide-treated coatings enhanced the viability, proliferation, and osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs). These findings suggest that this MgCO3-based coating exhibits excellent antibacterial performance and osteogenic potential. Based on the above, this study provides a simple method for preparing titanium implants with dual antibacterial and osteogenic capabilities, holding great promise in clinical applications.
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Affiliation(s)
- Shougang Xiang
- Department of Orthopaedics, Research Institute of Tissue Engineering and Stem Cells, Nanchong Central Hospital (Beijing Anzhen Hospital Nanchong Hospital), The Second Clinical College of North Sichuan Medical College Nanchong Sichuan 637000 China
| | - Chengdong Zhang
- Key Laboratory of Advanced Technologies of Materials (MOE), School of Materials Science and Engineering, Southwest Jiaotong University Chengdu Sichuan 610031 China
| | - Zhenju Guan
- Department of Orthopaedics, Research Institute of Tissue Engineering and Stem Cells, Nanchong Central Hospital (Beijing Anzhen Hospital Nanchong Hospital), The Second Clinical College of North Sichuan Medical College Nanchong Sichuan 637000 China
| | - Xingping Li
- Department of Orthopaedics, Chengfei Hospital Chengdu Sichuan 610091 China
| | - Yumei Liu
- Collaboration Innovation Center for Tissue Repair Material Engineering Technology, China West Normal University Nanchong Sichuan 637002 China
| | - Gang Feng
- Department of Orthopaedics, Research Institute of Tissue Engineering and Stem Cells, Nanchong Central Hospital (Beijing Anzhen Hospital Nanchong Hospital), The Second Clinical College of North Sichuan Medical College Nanchong Sichuan 637000 China
| | - Xuwei Luo
- Department of Orthopaedics, Research Institute of Tissue Engineering and Stem Cells, Nanchong Central Hospital (Beijing Anzhen Hospital Nanchong Hospital), The Second Clinical College of North Sichuan Medical College Nanchong Sichuan 637000 China
| | - Bo Zhang
- Department of Orthopaedics, Research Institute of Tissue Engineering and Stem Cells, Nanchong Central Hospital (Beijing Anzhen Hospital Nanchong Hospital), The Second Clinical College of North Sichuan Medical College Nanchong Sichuan 637000 China
| | - Jie Weng
- Key Laboratory of Advanced Technologies of Materials (MOE), School of Materials Science and Engineering, Southwest Jiaotong University Chengdu Sichuan 610031 China
| | - Dongqin Xiao
- Department of Orthopaedics, Research Institute of Tissue Engineering and Stem Cells, Nanchong Central Hospital (Beijing Anzhen Hospital Nanchong Hospital), The Second Clinical College of North Sichuan Medical College Nanchong Sichuan 637000 China
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6
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Fatima T, Abrar H, Jahan N, Shamim S, Ahmed N, Ali AB, Begum I, Ahmed W. Molecular marker identification, antioxidant, antinociceptive, and anti-inflammatory responsiveness of malonic acid capped silver nanoparticle. Front Pharmacol 2024; 14:1319613. [PMID: 38357362 PMCID: PMC10864560 DOI: 10.3389/fphar.2023.1319613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 12/21/2023] [Indexed: 02/16/2024] Open
Abstract
Nano-sized silver has drawn a great deal of attention in the field of health sciences owing to its remarkable therapeutic applications. Interestingly, the method applied to synthesize nanoparticles and the choice of reagents considerably influence their therapeutic potential and toxicities. Current research has explored the toxicity, anti-inflammatory, antinociceptive, and antioxidant responses of the malonic acid-capped silver nanoparticles (MA-AgNPs (C) by using sodium borohydride as a reducing agent at low temperatures by employing both in vitro and in vivo approaches. Furthermore, it has highlighted the synergistic effect of these novel compounds with conventional anti-inflammatory therapeutic agents. Acute and sub-acute toxicity analysis performed following OECD guidelines showed that the studied MA-AgNPs (C) are safer, and prominent toxic signs have not been detected at the highest studied dose of 2,000 mg/kg. Cytotoxicity evaluation through brine shrimp lethality revealed 20% lethality at the highest concentration of 169.8 μg/mL. Significantly, positive anti-inflammatory and analgesic responses alone as well as synergism with the standard were identified through in vitro as well as in vivo methods which were more potent at a lower dose (200 mg/kg). Notably synergistic outcomes were more pronounced than individual ones, indicating their prominent effect as a feasible drug delivery system. IL-6 and TNF-α assessment in excised paw tissue through RTPCR technique further supported their anti-inflammatory potential. DPPH assay revealed eminent in vitro antioxidant activity which was further corroborated by in vivo antioxidant assessment through evaluation of SOD in excised paw tissue.
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Affiliation(s)
- Tehrim Fatima
- Department of Pharmacology, Dow College of Pharmacy, Faculty of Pharmaceutical Sciences, Dow University of Health Sciences, Karachi, Pakistan
| | - Hina Abrar
- Department of Pharmacology, Dow College of Pharmacy, Faculty of Pharmaceutical Sciences, Dow University of Health Sciences, Karachi, Pakistan
| | - Noor Jahan
- Department of Pharmacology, Dow College of Pharmacy, Faculty of Pharmaceutical Sciences, Dow University of Health Sciences, Karachi, Pakistan
| | - Sana Shamim
- Department of Pharmaceutical Chemistry, Dow College of Pharmacy, Faculty of Pharmaceutical Sciences, Dow University of Health Sciences, Karachi, Pakistan
| | - Nazia Ahmed
- Dow Research Institute of Biotechnology and Biosciences, Dow University of Health Sciences, Karachi, Pakistan
| | - Asma Basharat Ali
- Department of Anatomy, Jinnah Medical and Dental College, Karachi, Pakistan
| | - Irshad Begum
- Department of Chemistry, University of Karachi, Karachi, Pakistan
| | - Waqas Ahmed
- School of Public Health, Dow University of Health Sciences, Karachi, Pakistan
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7
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Zhong W, Tang M, Xie Y, Huang X, Liu Y. Tea Polyphenols Inhibit the Activity and Toxicity of Staphylococcus aureus by Destroying Cell Membranes and Accumulating Reactive Oxygen Species. Foodborne Pathog Dis 2023; 20:294-302. [PMID: 37347934 DOI: 10.1089/fpd.2022.0085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/24/2023] Open
Abstract
Staphylococcus aureus can cause bacterial food intoxication and seriously affect human health. Tea polyphenols (TP) are a kind of natural, safe, and broad-spectrum bacteriostatic substances, with a wide range of bacteriostatic effects. In the study, we explored the possible bacteriostatic mode of TP. The minimum inhibitory concentration of TP against S. aureus was 64 μg/mL. Protein, DNA, and K+ leak experiments, fluorescence microscopy, and transmission electron microscopy suggested that TP disrupt cell membranes, leading to intracellular component loss. By studying the effect of TP on the toxicity of S. aureus, it was found that the expression levels of two toxin genes, coa and spa, were downregulated by 2.37 and 32.6, respectively. Furthermore, after treatment with TP, a large number of reactive oxygen species (ROS) were propagated and released, leading to oxidative stress in cells. We speculated that the bacteriostatic mechanism of TP may be through the destruction of the cell membrane and ROS-mediated oxidative stress. Meanwhile, the hemolysis activity proved the safety of TP. Our results suggested that TP may be a potential antimicrobial agent for food.
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Affiliation(s)
- Weiwei Zhong
- Department of Food Science and Engineering, Zhejiang-Malaysia Joint Research Laboratory for Agricultural Product Processing and Nutrition, Zhejiang Provincial Key Laboratory of Animal Protein Food Intensive Processing Technology, Ningbo University, Ningbo, China
| | - Mengsheng Tang
- Department of Food Science and Engineering, Zhejiang-Malaysia Joint Research Laboratory for Agricultural Product Processing and Nutrition, Zhejiang Provincial Key Laboratory of Animal Protein Food Intensive Processing Technology, Ningbo University, Ningbo, China
| | - Yan Xie
- Department of Food Science and Engineering, Zhejiang-Malaysia Joint Research Laboratory for Agricultural Product Processing and Nutrition, Zhejiang Provincial Key Laboratory of Animal Protein Food Intensive Processing Technology, Ningbo University, Ningbo, China
| | - Xianqing Huang
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Yanan Liu
- Department of Food Science and Engineering, Zhejiang-Malaysia Joint Research Laboratory for Agricultural Product Processing and Nutrition, Zhejiang Provincial Key Laboratory of Animal Protein Food Intensive Processing Technology, Ningbo University, Ningbo, China
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8
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Chirumbolo S, Gibellini D, Berto L, Cirrito C, Vella A, Bjørklund G, Sbarbati A, Bernardi P, Tirelli U. TiO 2-Ag-NP adhesive photocatalytic films able to disinfect living indoor spaces with a straightforward approach. Sci Rep 2023; 13:4200. [PMID: 36918713 PMCID: PMC10011799 DOI: 10.1038/s41598-023-31464-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Accepted: 03/13/2023] [Indexed: 03/16/2023] Open
Abstract
TiO2-Ag doped nanoparticulate (TiO2-Ag-NP) adhesive photocatalytic films were used to assess the ability in dropping down the burden of indoor microbial particles. The application of an easy-to use photocatalytic adhesive film to cleanse indoor living spaces from microbial pollution, represents a novelty in the field of photocatalytic devices. Reduction was attained by photocatalysis in selected spaces, usually with overcrowding (≥ 3 individuals) in the common working daily hours, and upon indoor microclimate monitoring. TiO2-Ag doped nanoparticulate (TiO2-Ag-NP) adhesive photocatalytic films were applied within five types of living spaces, including schools and job places. The microbial pollution was assessed at time 0 (far from routine clean, ≥ 9 h) and throughout 2-4 weeks following the photocatalyst application by relative light unit (RLU) luminometry and microbial indirect assessment (colony forming units per cubic meter, CFU/m3). TiO2-Ag-NP photocatalyst reduced RLU and CFU/m3 by rates higher than 70% leading to RLU ≤ 20 and microbial presence ≤ 35 CFU/m3. The described TiO2-Ag-NP is able to reduce microbial pollution to the lowest RLU threshold (≤ 20) within 60 min in open daylight in a standardized test room of 100 m2. The correlation between RLU and CFU/m3 was positive (r = 0.5545, p < 0.05), assessing that the microbial reduction of indoor areas by the TiO2-Ag-NP adhesive film was real. Titania photocatalysts represent promising tools to ensure air cleaning and sanitization in living indoor microclimates with a low cost, feasible and straightforward approach. This approach represents an easy to handle, cost effective, feasible and efficacious approach to reduce microbial pollution in indoor spaces, by simply attaching a TiO2-Ag-NP adhesive film on the wall.
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Affiliation(s)
- Salvatore Chirumbolo
- Department of Neurosciences, Biomedicine and Movement Sciences, Unit of Human Anatomy, University of Verona, Strada Le Grazie 8, 37134, Verona, Italy.
| | - Davide Gibellini
- Department of Diagnostics and Public Health, Unit of Microbiology, University of Verona, Verona, Italy
| | - Luca Berto
- Material Chemical Expert Labs, Treviso, Italy
| | | | - Antonio Vella
- Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - Geir Bjørklund
- Council for Nutritional and Environmental Medicine, Mo i Rana, Norway
| | - Andrea Sbarbati
- Department of Neurosciences, Biomedicine and Movement Sciences, Unit of Human Anatomy, University of Verona, Strada Le Grazie 8, 37134, Verona, Italy
| | - Paolo Bernardi
- Department of Neurosciences, Biomedicine and Movement Sciences, Unit of Human Anatomy, University of Verona, Strada Le Grazie 8, 37134, Verona, Italy
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9
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Choi J, Poudel K, Nam KS, Piri A, Rivera-Piza A, Ku SK, Hwang J, Kim JO, Byeon JH. Aero-manufacture of nanobulges for an in-place anticoronaviral on air filters. JOURNAL OF HAZARDOUS MATERIALS 2023; 445:130458. [PMID: 36444810 DOI: 10.1016/j.jhazmat.2022.130458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/09/2022] [Accepted: 11/20/2022] [Indexed: 06/16/2023]
Abstract
The interest in removing contagious viruses from indoor air using ventilation and filtration systems is increasing rapidly because people spend most of the day indoors. The development of an effective platform to regenerate the antiviral function of air filters during use and safe abrogation of used filters containing infectious viruses is a challenging task, because an on-demand safe-by-design manufacture system is essential for in-place antiviral coatings, but it has been rarely investigated. With these considerations, an electrically operable dispenser was prepared for decorating continuous ultrafine Fe-Zn, Fe-Ag, or Fe-Cu particles (<5 nm) onto SiO2 nanobeads (ca. 130 nm) to form nanobulges (i.e., nanoroughness for engaging coronavirus spikes) in the aerosol state for 3 min direct deposition on the air filter surfaces. The resulting nanobulges were exposed to human coronaviruses (HCoV; surrogates of SARS-CoV-2) to assess antiviral function. The results were compared with similar-sized individual Zn, Ag, and Cu particles. The nanobulges exhibited comparable antiviral activity to Zn, Ag, and Cu particles while retaining biosafety in both in vitro and in vivo models because of the significantly smaller metallic fractions. This suggests that the bimetallic bulge structures generate reactive oxygen species and Fenton-mediated hydroxyl radicals for inactivating HCoV.
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Affiliation(s)
- Jisoo Choi
- School of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Kishwor Poudel
- College of Pharmacy, Yeungnam University, Gyeongsan 38511, Republic of Korea; Wellman Center for Photomedicine, Department of Dermatology, Meassachusetts General Hospital, Harvard Medical School, MA 02114, USA
| | - Kang Sik Nam
- School of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Amin Piri
- School of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Adriana Rivera-Piza
- Department of Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Sae Kwang Ku
- College of Korean Medicine, Daegu Haany University, Gyeongsan 38610 Republic of Korea
| | - Jungho Hwang
- School of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea.
| | - Jong Oh Kim
- College of Pharmacy, Yeungnam University, Gyeongsan 38511, Republic of Korea.
| | - Jeong Hoon Byeon
- School of Mechanical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea.
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10
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Skłodowski K, Chmielewska-Deptuła SJ, Piktel E, Wolak P, Wollny T, Bucki R. Metallic Nanosystems in the Development of Antimicrobial Strategies with High Antimicrobial Activity and High Biocompatibility. Int J Mol Sci 2023; 24:2104. [PMID: 36768426 PMCID: PMC9917064 DOI: 10.3390/ijms24032104] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 01/12/2023] [Accepted: 01/18/2023] [Indexed: 01/25/2023] Open
Abstract
Antimicrobial resistance is a major and growing global problem and new approaches to combat infections caused by antibiotic resistant bacterial strains are needed. In recent years, increasing attention has been paid to nanomedicine, which has great potential in the development of controlled systems for delivering drugs to specific sites and targeting specific cells, such as pathogenic microbes. There is continued interest in metallic nanoparticles and nanosystems based on metallic nanoparticles containing antimicrobial agents attached to their surface (core shell nanosystems), which offer unique properties, such as the ability to overcome microbial resistance, enhancing antimicrobial activity against both planktonic and biofilm embedded microorganisms, reducing cell toxicity and the possibility of reducing the dosage of antimicrobials. The current review presents the synergistic interactions within metallic nanoparticles by functionalizing their surface with appropriate agents, defining the core structure of metallic nanoparticles and their use in combination therapy to fight infections. Various approaches to modulate the biocompatibility of metallic nanoparticles to control their toxicity in future medical applications are also discussed, as well as their ability to induce resistance and their effects on the host microbiome.
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Affiliation(s)
- Karol Skłodowski
- Department of Medical Microbiology and Nanobiomedical Engineering, Medical University of Bialystok, 15-222 Bialystok, Poland
| | | | - Ewelina Piktel
- Independent Laboratory of Nanomedicine, Medical University of Bialystok, 15-222 Bialystok, Poland
| | - Przemysław Wolak
- Institute of Medical Science, Collegium Medicum, Jan Kochanowski University of Kielce, IX Wieków Kielce 19A, 25-317 Kielce, Poland
| | - Tomasz Wollny
- Holy Cross Oncology Center of Kielce, Artwińskiego 3, 25-734 Kielce, Poland
| | - Robert Bucki
- Department of Medical Microbiology and Nanobiomedical Engineering, Medical University of Bialystok, 15-222 Bialystok, Poland
- Institute of Medical Science, Collegium Medicum, Jan Kochanowski University of Kielce, IX Wieków Kielce 19A, 25-317 Kielce, Poland
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11
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Efficacy of Vaporized Hydrogen Peroxide Combined with Silver Ions against Multidrug-Resistant Gram-Negative and Gram-Positive Clinical Isolates. Int J Mol Sci 2022; 23:ijms232415826. [PMID: 36555465 PMCID: PMC9779286 DOI: 10.3390/ijms232415826] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/19/2022] [Accepted: 11/29/2022] [Indexed: 12/15/2022] Open
Abstract
Antimicrobial resistance (AMR) is a serious public health problem that results in high morbidity and mortality rates. In particular, multidrug-resistant (MDR) strains circulating in hospital settings pose a major threat as they are associated with serious nosocomial infections. Therefore, regular cleaning and disinfection procedures, usually using chemical disinfectants, must be implemented in these facilities. Hydrogen peroxide (HP)-based disinfectants have proven high microbicidal activity and several comparative advantages over conventional disinfectants. We assessed the in vitro biocidal activity of an 8% HP solution combined with 30 mg/L silver ions (HP + Ag) against MDR clinical isolates of Klebsiella pneumoniae (MDRKp) and Pseudomonas aeruginosa (MDRPa), and methicillin-resistant Staphylococcus aureus (MRSA). Accordingly, the in vitro antibacterial activity was determined using the macrodilution method, and the efficacy was determined for 30 min in terms of (1) activity on bacteria in suspension and (2) activity on surfaces using vaporized HP + Ag on a 20 cm2 stainless steel surface. A strong bactericidal effect of HP + Ag was observed against MDRKp, MDRPa, and MRSA strains, with minimum inhibitory concentrations and minimum bactericidal concentrations between 362.5 and 5800 mg/L. A strong effect was observed during the 30 min of HP + Ag exposure to the resistant clinical isolates, with over 4-Log10 reduction in CFUs. Regarding the efficacy of the disinfectant on surfaces, bacterial load reductions of >99% were observed. These results suggest that HP + Ag is potentially useful as an effective disinfectant for decontaminating surfaces in hospital settings suspected of contamination with MDR bacteria.
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Hong F, Chen P, Yu X, Chen Q. The Application of Silver to Decontaminate Dental Unit Waterlines-a Systematic Review. Biol Trace Elem Res 2022; 200:4988-5002. [PMID: 34997534 PMCID: PMC8741583 DOI: 10.1007/s12011-022-03105-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 01/03/2022] [Indexed: 11/26/2022]
Abstract
The contamination of dental unit waterlines (DUWLs) is a major health concern since it can pose cross-infection risks among dental professionals and their patients. Silver is one of the widely used metals in medical fields due to its superior antimicrobial properties. Silver-based agents have been commercially available for the decontamination of dental unit water currently. This systematic review aims to examine the evidence supporting efficacy and safety of application of silver to decontaminate DUWLs. We performed a search of the peer-review literature of studies in six electronic databases using corresponding search terms. Eligibility was restricted to English-language studies exploring the application of silver to decontaminate dental unit water, e.g., silver-based disinfectants and silver-coated dental waterlines tubing. The search identified 148 articles, and 9 articles that met the criteria were synthesized with qualitative narrative analyses. We observed good evidence of antimicrobial efficacy of silver with hydrogen peroxide on diverse microorganism present in DUWLs. Furthermore, there is insufficient evidence on the application of silver nanoparticles (AgNPs) as an efficient material to control the biofilms in DUWLs. Post-treatment data of either the bactericidal and bacteriostatic effects of silver or AgNPs, especially the actual clinical efficacy of long-term application, are scarce. More high-quality research is needed to resolve the gap on the optimal dosage and treatment options required to control bacterial and biofilm in DUWLs with silver-containing materials.
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Affiliation(s)
- Feiruo Hong
- 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, Hangzhou, 310000, Zhejiang, China
- School of Medicine, Zhejiang University, Hangzhou, 310000, Zhejiang, China
| | - Piaopiao Chen
- 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, Hangzhou, 310000, Zhejiang, China
- School of Medicine, Zhejiang University, Hangzhou, 310000, Zhejiang, China
| | - Xuefen Yu
- 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, Hangzhou, 310000, Zhejiang, China.
| | - Qianming Chen
- 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, Hangzhou, 310000, Zhejiang, China
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13
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Flores D, Noboa J, Tarapues M, Vizuete K, Debut A, Bejarano L, Streitwieser DA, Ponce S. Simple Preparation of Metal-Impregnated FDM 3D-Printed Structures. MICROMACHINES 2022; 13:1675. [PMID: 36296028 PMCID: PMC9612141 DOI: 10.3390/mi13101675] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 09/10/2022] [Accepted: 09/14/2022] [Indexed: 06/16/2023]
Abstract
Modifying the natural characteristics of PLA 3D-printed models is of interest in various research areas in which 3D-printing is applied. Thus, in this study, we describe the simple impregnation of FDM 3D-printed PLA samples with well-defined silver nanoparticles and an iron metal salt. Quasi-spherical and dodecahedra silver particles were strongly attached at the channels of 3D-printed milli-fluidic reactors to demonstrate their attachment and interaction with the flow, as an example. Furthermore, Fenton-like reactions were successfully developed by an iron catalyst impregnated in 3D-printed stirrer caps to induce the degradation of a dye and showed excellent reproducibility.
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Affiliation(s)
- Diana Flores
- Department of Chemical Engineering, Universidad San Francisco de Quito USFQ, Diego de Robles s/n y Avenida Interoceánica, Quito 170157, Ecuador
| | - Jose Noboa
- Department of Chemical Engineering, Universidad San Francisco de Quito USFQ, Diego de Robles s/n y Avenida Interoceánica, Quito 170157, Ecuador
- Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Mickaela Tarapues
- Department of Chemical Engineering, Universidad San Francisco de Quito USFQ, Diego de Robles s/n y Avenida Interoceánica, Quito 170157, Ecuador
| | - Karla Vizuete
- Centro de Nanociencia y Nanotecnología, Universidad de las Fuerzas Armadas ESPE, Sangolquí 171103, Ecuador
| | - Alexis Debut
- Centro de Nanociencia y Nanotecnología, Universidad de las Fuerzas Armadas ESPE, Sangolquí 171103, Ecuador
| | - Lorena Bejarano
- Department of Mechanical Engineering, Universidad San Francisco de Quito USFQ, Diego de Robles s/n y AvenidaInteroceánica, Quito 170157, Ecuador
| | - Daniela Almeida Streitwieser
- Department of Chemical Engineering, Universidad San Francisco de Quito USFQ, Diego de Robles s/n y Avenida Interoceánica, Quito 170157, Ecuador
- Faculty for Applied Chemistry, Reutlingen University, 72762 Reutlingen, Germany
| | - Sebastian Ponce
- Department of Chemical Engineering, Universidad San Francisco de Quito USFQ, Diego de Robles s/n y Avenida Interoceánica, Quito 170157, Ecuador
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14
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Sharaf EM, Hassan A, AL-Salmi FA, Albalwe FM, Albalawi HMR, Darwish DB, Fayad E. Synergistic antibacterial activity of compact silver/magnetite core-shell nanoparticles core shell against Gram-negative foodborne pathogens. Front Microbiol 2022; 13:929491. [PMID: 36118244 PMCID: PMC9478199 DOI: 10.3389/fmicb.2022.929491] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 08/03/2022] [Indexed: 11/13/2022] Open
Abstract
The development of innovative antibacterial drugs against foodborne pathogens has led to an interest in novel materials such as nanomaterials. The unique features of nanomaterial qualify it for use as an antibacterial treatment. Noble metals and metal oxide nanoparticles, such as silver and magnetite nanoparticles, have been shown to be effective antibacterial medications against a range of microorganisms. In this work, Ag@Fe3O4 -NPs were fabricated by using a wet chemical reduction and modified co-precipitation techniques. The antibacterial efficiency of the Ag/Fe3O4 core shell nanoparticles was investigated by applying various techniques, such as the Kirby–Bauer Disk Diffusion test, minimum inhibitory concentration (MIC) and bactericidal concentration (MBC), Colony Forming Unit (CFU), and kill time assay. The toxicity mechanism of Ag@Fe3O4 -NPs against Salmonella typhimurium and Escherichia coli was studied by apoptosis and reactive oxygen species (ROS) assays. The data revealed that a cubic core was surrounded by a silver shell, which indicated the regular morphology of silver magnetite core shell nanoparticles without any aggregation. Furthermore, Ag@Fe3O4 -NPs is more toxic against S. typhimurium and E. coli than Ag-NPs and Fe3O4 NPs. The MIC values for Ag/Fe3O4 NPs against S. typhimurium and E. coli were 3.1 and 5.4 μg/ml, respectively, whereas the MIC values for Ag-NPs and MNPs against S. typhimurium and E. coli were 4.1 and 8.2 μg/ml for Ag-NPs and 6.9 and 10.3 μg/ml for MNPs. The results showed the ability of Ag@Fe3O4 -NPs to induce apoptosis by generating ROS. Also, the ability of Ag@Fe3O4 -NPs to liberate free Ag+ and generate ROS via the Haber-Weiss cycle may be a plausible mechanism to explain the toxicity of Ag@Fe3O4 -NPs - NPs.
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Affiliation(s)
- Eman M. Sharaf
- Department of Bacteriology, Immunology, and Mycology, Animal Health Research Institute (AHRI), Shebin El Kom, Egypt
| | - Amr Hassan
- Department of Bioinformatics, Genetic Engineering and Biotechnology Research Institute (GEBRI), University of Sadat City, Sadat, Egypt
- *Correspondence: Amr Hassan,
| | - Fawziah A. AL-Salmi
- Department of Biology, Faculty of Sciences, Taif University, Taif, Saudi Arabia
| | - Fauzeya M. Albalwe
- Department of Biology, Faculty of Science, Tabuk University, Tabuk, Saudi Arabia
| | | | - Doaa B. Darwish
- Department of Botany, Faculty of Science, Mansoura University, Mansoura, Egypt
| | - Eman Fayad
- Department of Biotechnology, Faculty of Sciences, Taif University, Taif, Saudi Arabia
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15
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da Silva DRC, Scaiano JC. Exploring the Antibacterial Properties of Lignin-coated Magnetic Nanoparticles Synthesized in a One-pot Process. Photochem Photobiol 2022; 99:706-715. [PMID: 35929341 DOI: 10.1111/php.13686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 07/29/2022] [Indexed: 12/01/2022]
Abstract
Given the current grave problems with antibiotic resistance, the discovery of novel, unconventional antibacterial drugs are not just important, but also urgent. In this contribution, we report on the synthesis and testing of several composite nanomaterials that may find applications as therapeutic drugs or surface disinfectants. These materials are based on magnetic nanostructures coated with lignin, for example, lignin@FeCo. The magnetic properties of these nanocomposites facilitate removal or localization, while the lignin shell provides biocompatibility. These nanomaterials are mild antibacterials in the absence of light, but when illuminated become powerful antibacterial agents with typically ≥6 log units bacterial reduction in 1 to 5 minutes of irradiation. These materials are strongly absorbing, including in the very useful NIR biological window, which we illustrate using 810 nm LED irradiation. We also show that in the short time required for antibacterial action, thermal changes are very small (≤5°C). Further, biocompatibility tests using fibroblasts show very limited cell damage and no enhanced adverse effect during 810 nm NIR illumination. As a surface coating for the active material, lignin provides a "trojan horse" strategy to facilitate the antibacterial action.
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Affiliation(s)
- Daliane R C da Silva
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, ON, K1N 6N5, Canada
| | - Juan C Scaiano
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, ON, K1N 6N5, Canada
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16
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Antibacterial and Cytocompatible: Combining Silver Nitrate with Strontium Acetate Increases the Therapeutic Window. Int J Mol Sci 2022; 23:ijms23158058. [PMID: 35897634 PMCID: PMC9331456 DOI: 10.3390/ijms23158058] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 07/16/2022] [Accepted: 07/19/2022] [Indexed: 02/01/2023] Open
Abstract
Microbial infection and insufficient tissue formation are considered to be the two main causes of dental implant failure. Novel studies have focused on designing dual-functional strategies to promote antibacterial properties and improve tissue cell response simultaneously. In this study, we investigated the antibacterial properties and cytocompatibility of silver nitrate (AgNO3) and strontium acetate (SrAc) in a mono-culture setup for dental application. Additionally, we defined the therapeutic window between the minimum inhibitory concentration against pathogenic bacteria and maximum cytocompatible dose in the case of combined applications in a co-culture setup. Antibacterial properties were screened using Aggregatibacter actinomycetemcomitans and cell response experiments were performed with osteoblastic cells (MC3T3) and fibroblastic cells (NIH3T3). The osteoinductive behavior was investigated separately on MC3T3 cells using alizarin red staining. A therapeutic window for AgNO3 as well as SrAc applications could be defined in the case of MC3T3 cells while the cytocompatibility of NIH3T3 cells was compromised for all concentrations with an antibacterial effect. However, the combined application of AgNO3/SrAc caused an enhanced antibacterial effect and opened a therapeutic window for both cell lines. Enhanced mineralization rates could be observed in cultures containing SrAc. In conclusion, we were able to demonstrate that adding SrAc to AgNO3 not only intensifies antibacterial properties but also exhibits bone inductive characteristics, thereby offering a promising strategy to combat peri-implantitis and at the same time improve osseointegration in implant therapy.
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17
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Tan L, Yuan G, Wang P, Feng S, Tong Y, Wang C. pH-responsive Ag-Phy@ZIF-8 nanoparticles modified by hyaluronate for efficient synergistic bacteria disinfection. Int J Biol Macromol 2022; 206:605-613. [PMID: 35202636 DOI: 10.1016/j.ijbiomac.2022.02.097] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 02/14/2022] [Accepted: 02/16/2022] [Indexed: 01/05/2023]
Abstract
Zeolitic imidazolate framework-8 (ZIF-8) is a type of Metal-organic frameworks (MOFs), which shows promising application in the field of bacterial infection, owing to its excellent biocompatibility. Here, we report the encapsulation of silver nanoparticles (Ag NPs) in ZIF-8, accompanied with embedding of physcion (Phy) to obtain Ag-Phy@ZIF-8 with efficient and intelligent synergistic antimicrobial capabilities. Due to the micro-acidic environment around the bacteria, the release of silver and Phy shows a controlled released. Further, the Ag-Phy@ZIF-8 is modified by hyaluronate (HA), denoted as Ag-Phy@ZIF-8@HA, which has a strong inhibitory effect on the growth of both E. coli (99.1%) and S. aureus (99.5%), with no impacting on cell growth, showing good biocompatibility. Thus, these pH-responsive biocomposites have the potential application on smart wound excipients for bacterial infections.
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Affiliation(s)
- Lichuan Tan
- Department of Chemistry and Chemical Engineering, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, PR China
| | - Guangsong Yuan
- Department of Chemistry and Chemical Engineering, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, PR China
| | - Peng Wang
- Department of Chemistry and Chemical Engineering, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, PR China
| | - Siwen Feng
- Department of Chemistry and Chemical Engineering, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, PR China
| | - Yan Tong
- Department of Chemistry and Chemical Engineering, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, PR China
| | - Cuijuan Wang
- Department of Chemistry and Chemical Engineering, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, PR China.
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18
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Mohamed AF, Nasr M, Amer ME, Abuamara TMM, Abd-Elhay WM, Kaabo HF, Matar EER, El Moselhy LE, Gomah TA, Deban MAEF, Shebl RI. Anticancer and antibacterial potentials induced post short-term exposure to electromagnetic field and silver nanoparticles and related pathological and genetic alterations: in vitro study. Infect Agent Cancer 2022; 17:4. [PMID: 35120563 PMCID: PMC8817517 DOI: 10.1186/s13027-022-00416-4] [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: 10/26/2021] [Accepted: 01/14/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Resistance to antibiotics and anticancer therapy is a serious global health threat particularly in immunosuppressed cancer patients. Current study aimed to estimate the antibacterial and anticancer potentials of short-term exposure to extremely low frequency electromagnetic field (ELF-EMF) and silver nanoparticles (AgNPs) either in sole or combined form. METHODS Antibacterial activity was evaluated via determination of the bacterial viable count reduction percentage following exposure, whereas their ability to induce apoptosis in breast cancer (MCF-7) cell line was detected using annexin V-fluorescein isothiocyanate and cell cycle analysis. Also, oxidative stress potential and molecular profile were investigated. RESULTS ELF-EMF and AgNPs significantly (p < 0.01) reduced K. pneumonia viable count of compared to that of S. aureus in a time dependent manner till reaching 100% inhibition when ELF-EMF was applied in combination to 10 µM/ml AgNPs for 2 h. Apoptosis induction was obvious following exposure to either ELF-EMF or AgNPs, however their apoptotic potential was intensified when applied in combination recording significantly (p < 0.001) induced apoptosis as indicated by elevated level of MCF-7 cells in the Pre G1 phase compared to control. S phase arrest and accumulation of cells in G2/M phase was observed following exposure to AgNPs and EMF, respectively. Up-regulation in the expression level of p53, iNOS and NF-kB genes as well as down-regulation of Bcl-2 and miRNA-125b genes were detected post treatment. CONCLUSIONS The antibacterial and anticancer potentials of these agents might be related to their ability to induce oxidative stress, suggesting their potentials as novel candidates for controlling infections and triggering cancer cells towards self-destruction.
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Affiliation(s)
- Aly Fahmy Mohamed
- International Center for Training and Advanced Researches (ICTAR-Egypt), Cairo, Egypt
| | - Mohamed Nasr
- Histology Department, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
| | - Mohamed E Amer
- Histology Department, Faculty of Medicine, Al-Azhar University, Damietta, Egypt
| | - Tamer M M Abuamara
- Histology Department, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
| | - Wagih M Abd-Elhay
- Histology Department, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
| | - Hassan Fathy Kaabo
- Histology Department, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
| | - Emad Eldin R Matar
- Pathology Department, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
| | - Laila E El Moselhy
- Histology Department, Faculty of Medicine, Al-Azhar University, Damietta, Egypt
| | | | | | - Rania Ibrahim Shebl
- Microbiology and Immunology Department, Faculty of Pharmacy, Ahram Canadian University (ACU), 4th Industrial Zone, Banks Complex, 6th October City, Cairo, Egypt.
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19
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Angelini G, Gasbarri C. Green synthesis and properties of silver nanoparticles in sulfobutylether-β-cyclodextrin aqueous solution. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Ma X, Lang J, Chen P, Yang R. Silver Nanoparticles as an Effective Antimicrobial against Otitis Media Pathogens. AIChE J 2021; 67:e17468. [PMID: 35450419 PMCID: PMC9017526 DOI: 10.1002/aic.17468] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 09/14/2021] [Indexed: 01/06/2023]
Abstract
Otitis Media (OM) is the most common reason for U.S. children to receive prescribed oral antibiotics, leading to potential to cause antibiotic resistance. To minimize oral antibiotic usage, we developed polyvinylpyrrolidone-coated silver nanoparticles (AgNPs-PVP), which completely eradicated common OM pathogens, i.e., Streptococcus pneumoniae and non-typeable Haemophilus influenzae (NTHi) at 1.04μg/mL and 2.13μg/mL. The greater antimicrobial efficacy against S. pneumoniae was a result of the H2O2-producing ability of S. pneumoniae and the known synergistic interactions between H2O2 and AgNPs. To enable the sustained local delivery of AgNPs-PVP (e.g., via injection through perforated tympanic membranes), a hydrogel formulation of 18%(w/v)P407 was developed. Reverse thermal gelation of the AgNPs-PVP-P407 hydrogel could gel rapidly upon entering the warm auditory bullae and thereby sustained release of antimicrobials. This hydrogel-based local delivery system completely eradicated OM pathogens in vitro without cytotoxicity, and thus represents a promising strategy for treating bacterial OM without relying on conventional antibiotics.
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Affiliation(s)
- Xiaojing Ma
- Robert F. Smith School of Chemical & Biomolecular Engineering, Cornell University, Ithaca, NY 14850, USA
| | - Jiayan Lang
- Robert F. Smith School of Chemical & Biomolecular Engineering, Cornell University, Ithaca, NY 14850, USA
| | - Pengyu Chen
- Robert F. Smith School of Chemical & Biomolecular Engineering, Cornell University, Ithaca, NY 14850, USA
| | - Rong Yang
- Robert F. Smith School of Chemical & Biomolecular Engineering, Cornell University, Ithaca, NY 14850, USA
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21
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Zhu Y, Zhou F, Hu J, Yang L, Yang DQ, Sacher E. A facile route to prepare colorless Ag-Cu nanoparticle dispersions with elevated antibacterial effects. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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22
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Darwish RM, AlKawareek MY, Bulatova NR, Alkilany AM. Silver nanoparticles, a promising treatment against clinically important fluconazole-resistant Candida glabrata. Lett Appl Microbiol 2021; 73:718-724. [PMID: 34510497 DOI: 10.1111/lam.13560] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 08/23/2021] [Accepted: 09/01/2021] [Indexed: 11/28/2022]
Abstract
Resistance to azole antifungal agents is a challenging limitation in Candida glabrata treatment. It is associated with decreased intracellular concentrations of antifungal agents as a result of overexpression of efflux pumps on the cellular plasma membranes. This work evaluates the potential of silver nanoparticles (AgNPs) to reverse the resistance of fungal cells to fluconazole. Silver nanoparticles were prepared using wet chemical method and characterised by UV-Vis spectrophotometry, dynamic light scattering, and zeta potential. Broth microdilution and pour plates methods were used to study the anticandidal activity using two C. glabrata fluconazole-resistant strains (DSY565 and CBS138) known to overexpress active efflux pumps, and a standard fluconazole sensitive strain ATCC 22553. Silver nanoparticles-fluconazole combinations decreased concentrations of fluconazole substantially without compromising the activity. These findings suggest that AgNPs enhance the efficacy of fluconazole and offer a promising application in therapy of C. glabrata infections.
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Affiliation(s)
- R M Darwish
- Department of Pharmaceutics and Pharmaceutical Technology, School of Pharmacy, The University of Jordan, Amman, Jordan
| | - M Y AlKawareek
- Department of Pharmaceutics and Pharmaceutical Technology, School of Pharmacy, The University of Jordan, Amman, Jordan
| | - N R Bulatova
- Department of Biopharmaceutics and Clinical Pharmacy, School of Pharmacy, The University of Jordan, Amman, Jordan
| | - A M Alkilany
- Department of Pharmaceutics and Pharmaceutical Technology, School of Pharmacy, The University of Jordan, Amman, Jordan
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23
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Fasiku V, Omolo CA, Devnarain N, Ibrahim UH, Rambharose S, Faya M, Mocktar C, Singh SD, Govender T. Chitosan-Based Hydrogel for the Dual Delivery of Antimicrobial Agents Against Bacterial Methicillin-Resistant Staphylococcus aureus Biofilm-Infected Wounds. ACS OMEGA 2021; 6:21994-22010. [PMID: 34497894 PMCID: PMC8412894 DOI: 10.1021/acsomega.1c02547] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Accepted: 08/04/2021] [Indexed: 06/13/2023]
Abstract
Chronic wound infections caused by antibiotic-resistant bacteria have become a global health concern. This is attributed to the biofilm-forming ability of bacteria on wound surfaces, thus enabling their persistent growth. In most cases, it leads to morbidity and in severe cases mortality. Current conventional approaches used in the treatment of biofilm wounds are proving to be ineffective due to limitations such as the inability to penetrate the biofilm matrix; hence, biofilm-related wounds remain a challenge. Therefore, there is a need for more efficient alternate therapeutic interventions. Hydrogen peroxide (HP) is a known antibacterial/antibiofilm agent; however, prolonged delivery has been challenging due to its short half-life. In this study, we developed a hydrogel for the codelivery of HP and antimicrobial peptides (Ps) against bacteria, biofilms, and wound infection associated with biofilms. The hydrogel was prepared via the Michael addition technique, and the physiochemical properties were characterized. The safety, in vitro, and in vivo antibacterial/antibiofilm activity of the hydrogel was also investigated. Results showed that the hydrogel is biosafe. A greater antibacterial effect was observed with HP-loaded hydrogels (CS-HP; hydrogel loaded with HP and CS-HP-P; hydrogel loaded with HP and peptide) when compared to HP as seen in an approximately twofold and threefold decrease in minimum inhibitory concentration values against methicillin-resistant Staphylococcus aureus (MRSA) bacteria, respectively. Similarly, both the HP-releasing hydrogels showed enhanced antibiofilm activity in the in vivo study in mice models as seen in greater wound closure and enhanced wound healing in histomorphological analysis. Interestingly, the results revealed a synergistic antibacterial/antibiofilm effect between HP and P in both in vitro and in vivo studies. The successfully prepared HP-releasing hydrogels showed the potential to combat bacterial biofilm-related infections and enhance wound healing in mice models. These results suggest that the HP-releasing hydrogels may be a superior platform for eliminating bacterial biofilms without using antibiotics in the treatment of chronic MRSA wound infections, thus improving the quality of human health.
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Affiliation(s)
- Victoria
O. Fasiku
- Discipline
of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South
Africa
| | - Calvin A. Omolo
- Discipline
of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South
Africa
- School
of Pharmacy and Health Sciences, Department of Pharmaceutics, United States International University-Africa, P.O. Box 14634, Nairobi 00800, Kenya
| | - Nikita Devnarain
- Discipline
of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South
Africa
| | - Usri H. Ibrahim
- Discipline
of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South
Africa
| | - Sanjeev Rambharose
- Department
of Physiological Sciences, Faculty of Science, Stellenbosch University, Private Bag X1 Matieland, Stellenbosch 7602, South Africa
| | - Mbuso Faya
- Discipline
of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South
Africa
| | - Chunderika Mocktar
- Discipline
of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South
Africa
| | - Sanil D. Singh
- Biomedical
Research Unit, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South
Africa
| | - Thirumala Govender
- Discipline
of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South
Africa
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24
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Andra S, Balu SK, Jeevanandam J, Muthalagu M. Emerging nanomaterials for antibacterial textile fabrication. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2021; 394:1355-1382. [PMID: 33710422 DOI: 10.1007/s00210-021-02064-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 02/08/2021] [Indexed: 12/16/2022]
Abstract
In recent times, the search for innovative material to fabricate smart textiles has been increasing to satisfy the expectation and needs of the consumers, as the textile material plays a key role in the evolution of human culture. Further, the textile materials provide an excellent environment for the microbes to grow, because of their large surface area and ability to retain moisture. In addition, the growth of harmful bacteria on the textile material not only damages them but also leads to intolerable foul odour and significant danger to public health. In particular, the pathogenic bacteria present in the fabric surface can cause severe skin infections such as skin allergy and irritation via direct human contact and even can lead to heart problems and pneumonia in certain cases. Recently, nanoparticles and nanomaterials play a significant role in textile industries for developing functional smart textiles with self-cleaning, UV-protection, insect repellent, waterproof, anti-static, flame-resistant and antimicrobial-resistant properties. Thus, this review is an overview of various textile fibres that favour bacterial growth and potential antibacterial nanoparticles that can inhibit the growth of bacteria on fabric surfaces. In addition, the probable antibacterial mechanism of nanoparticles and the significance of the fabric surface modification and fabric finishes in improving the long-term antibacterial efficacy of nanoparticle-coated fabrics were also discussed.
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Affiliation(s)
- Swetha Andra
- Department of Textile Technology, Anna University, Chennai, India
| | | | - Jaison Jeevanandam
- CQM-Centro de Química da Madeira, MMRG, Universidade da Madeira, Campus da Penteada, 9020-105, Funchal, Portugal
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25
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Jeong R, Kumar H, Jones S, Sandwell A, Kim K, Park SS. Increased sanitization potency of hydrogen peroxide with synergistic O 3 and intense pulsed light for non-woven polypropylene. RSC Adv 2021; 11:23881-23891. [PMID: 35479023 PMCID: PMC9036529 DOI: 10.1039/d1ra03675k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 06/30/2021] [Indexed: 11/21/2022] Open
Abstract
Supplies of respiratory masks have recently become a concern due to the onset of the SARS-CoV-2 pandemic. Sanitization and reuse of masks can alleviate high mask consumption and production stresses. In the present work, improved sanitization potency of vaporous hydrogen peroxide (VHP) treatment of resilient bacterial spores while retaining polymeric filter performance was explored. A batch fumigation chamber with hydrogen peroxide (H2O2) vapor and ozone (O3) is featured, followed by intense pulsed light (IPL) flash treatments. A resilient bacterial indicator, Geobacillus stearothermophilus (G. stearothermophilus), was utilized to compare the efficacy of various H2O2 concentrations in combination with O3 and IPL. It was found that exposure to 30 minutes of 4.01 L min−1 0.03% H2O2 aqueous vapor and 3 g h−1 O3 followed by 10 IPL flashes per side completely inactivated G. stearothermophilus. The xenon sourced IPL irradiation was found to synergistically enhance radical production and strengthen the complementary biocidal interaction of H2O2 with O3. Due to the synergistic effects, H2O2 was able to sanitize at a diluted concentration of 0.03% H2O2. The physical properties, such as surface potential, tensile strength, hydrophobicity, and filtration efficiency of >300 nm saline water aerosol of fibrous polypropylene (PP) sheets, were maintained. In addition, no residue of sanitizers was detected, thus confirming the biosafety and applicability of this method to disposable masks. Performance was benchmarked and compared with commercially available processes. The synergistic regime was found to achieve sterilization of G. stearothermophilus at drastically reduced H2O2 concentrations and in ambient conditions relative to commercial methods. By introducing synergistic elements to the VHP processes, potent sanitization of polymeric filters is achieved at low H2O2 concentrations.![]()
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Affiliation(s)
- Robin Jeong
- Department of Mechanical and Manufacturing Engineering
- University of Calgary
- Calgary
- Canada
| | - Hitendra Kumar
- Department of Mechanical and Manufacturing Engineering
- University of Calgary
- Calgary
- Canada
- School of Engineering
| | - Steven Jones
- Zymetrix Biomaterials & Tissue Engineering Technology Development Centre
- Calgary
- Canada
| | - Allen Sandwell
- Department of Mechanical and Manufacturing Engineering
- University of Calgary
- Calgary
- Canada
| | - Keekyoung Kim
- Department of Mechanical and Manufacturing Engineering
- University of Calgary
- Calgary
- Canada
| | - Simon S. Park
- Department of Mechanical and Manufacturing Engineering
- University of Calgary
- Calgary
- Canada
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26
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Malá Z, Žárská L, Bajgar R, Bogdanová K, Kolář M, Panáček A, Binder S, Kolářová H. The application of antimicrobial photodynamic inactivation on methicillin-resistant S. aureus and ESBL-producing K. pneumoniae using porphyrin photosensitizer in combination with silver nanoparticles. Photodiagnosis Photodyn Ther 2020; 33:102140. [PMID: 33307229 DOI: 10.1016/j.pdpdt.2020.102140] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 11/10/2020] [Accepted: 12/04/2020] [Indexed: 12/12/2022]
Abstract
As resistance of bacterial strains to antibiotics is a major problem, there is a need to look for alternative treatments. One option is antimicrobial photodynamic inactivation (aPDI). The pathogenic cells are targeted by a nontoxic photosensitizer while the surrounding healthy tissue is relatively unaffected. The photosensitizer is activated by light of t appropriate wavelength resulting in the generation of reactive oxygen species that are cytotoxic for the pathogens. In this work, the photosensitizer TMPyP and silver nanoparticles (AgNPs) were investigated for their synergistic antibacterial effect. We tested these two substances on two bacterial strains, methicillin-resistant Staphylococcus aureus 4591 (MRSA) and extended-spectrum beta-lactamases-producing Klebsiella pneumoniae 2486 (ESBL-KP), to compare their effectiveness. The bacteria were first incubated with TMPyP for 45 min or 5 h, then irradiated with a LED source with the total fluence of 10 or 20 J/cm2 and then placed in a microbiological growth medium supplemented with AgNPs. To accomplish the synergistic effect, the optimal combination of TMPyP and AgNPs was estimated as 1.56-25 μM for TMPyP and 3.38 mg/l for AgNPs in case of MRSA and 1.56-50 μM for TMPyP and 3.38 mg/l for AgNPs in case of ESBL-KP at 45 min incubation with TMPyP and fluence of 10 J/cm2. Longer incubation and/or longer irradiation led to a decrease in the maximum values of the photosensitizer concentration to produce the synergistic effect. From this work it can be concluded that the combination of antimicrobial photodynamic inactivation with a treatment including silver nanoparticles could be a promising approach to treat bacterial infection.
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Affiliation(s)
- Zuzana Malá
- Department of Medical Biophysics, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Czech Republic.
| | - Ludmila Žárská
- Department of Medical Biophysics, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Czech Republic.
| | - Robert Bajgar
- Department of Medical Biophysics, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Czech Republic.
| | - Kateřina Bogdanová
- Department of Microbiology, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Czech Republic.
| | - Milan Kolář
- Department of Microbiology, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Czech Republic.
| | - Aleš Panáček
- Department of Physical Chemistry, Regional Centre of Advanced Technologies, Faculty of Science, Palacky University in Olomouc, Czech Republic.
| | - Svatopluk Binder
- Department of Medical Biophysics, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Czech Republic.
| | - Hana Kolářová
- Department of Medical Biophysics, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Czech Republic; Department of Medical Biophysics, Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Czech Republic.
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Gherasim O, Puiu RA, Bîrcă AC, Burdușel AC, Grumezescu AM. An Updated Review on Silver Nanoparticles in Biomedicine. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E2318. [PMID: 33238486 PMCID: PMC7700255 DOI: 10.3390/nano10112318] [Citation(s) in RCA: 104] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 11/17/2020] [Accepted: 11/20/2020] [Indexed: 12/12/2022]
Abstract
Silver nanoparticles (AgNPs) represent one of the most explored categories of nanomaterials for new and improved biomaterials and biotechnologies, with impressive use in the pharmaceutical and cosmetic industry, anti-infective therapy and wound care, food and the textile industry. Their extensive and versatile applicability relies on the genuine and easy-tunable properties of nanosilver, including remarkable physicochemical behavior, exceptional antimicrobial efficiency, anti-inflammatory action and antitumor activity. Besides commercially available and clinically safe AgNPs-based products, a substantial number of recent studies assessed the applicability of nanosilver as therapeutic agents in augmented and alternative strategies for cancer therapy, sensing and diagnosis platforms, restorative and regenerative biomaterials. Given the beneficial interactions of AgNPs with living structures and their nontoxic effects on healthy human cells, they represent an accurate candidate for various biomedical products. In the present review, the most important and recent applications of AgNPs in biomedical products and biomedicine are considered.
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Affiliation(s)
- Oana Gherasim
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 1-7 Gheorghe Polizu Street, 011061 Bucharest, Romania; (O.G.); (R.A.P.); (A.C.B.); (A.-C.B.)
- Lasers Department, National Institute for Lasers, Plasma and Radiation Physics, 409 Atomistilor Street, 077125 Magurele, Romania
| | - Rebecca Alexandra Puiu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 1-7 Gheorghe Polizu Street, 011061 Bucharest, Romania; (O.G.); (R.A.P.); (A.C.B.); (A.-C.B.)
| | - Alexandra Cătălina Bîrcă
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 1-7 Gheorghe Polizu Street, 011061 Bucharest, Romania; (O.G.); (R.A.P.); (A.C.B.); (A.-C.B.)
| | - Alexandra-Cristina Burdușel
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 1-7 Gheorghe Polizu Street, 011061 Bucharest, Romania; (O.G.); (R.A.P.); (A.C.B.); (A.-C.B.)
| | - Alexandru Mihai Grumezescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 1-7 Gheorghe Polizu Street, 011061 Bucharest, Romania; (O.G.); (R.A.P.); (A.C.B.); (A.-C.B.)
- Research Institute of the University of Bucharest—ICUB, University of Bucharest, 90-92 Panduri Road, 050657 Bucharest, Romania
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Mekhemer IA, Gaber AAM, Aly MMM. Production of Amidinyl Radicals via UV-Vis-Light Promoted Reduction of N-Arylthiophene-2-carboxamidoximes and Application to the Preparation of Some New N-Arylthiophene-2-carboxamidines. ACS OMEGA 2020; 5:28712-28721. [PMID: 33195924 PMCID: PMC7659145 DOI: 10.1021/acsomega.0c03987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 10/14/2020] [Indexed: 06/11/2023]
Abstract
A modern method for the preparation of some new N-arylthiophene-2-carboxamidines via amidinyl radicals generated using UV-vis-light promoting the reduction of N-arylthiophene-2-carboxamidoximes without any catalyst in a short amount of time, highly straight forward, and in an efficient manner is described. This method defeats the flaws of the conventional methods for the reduction of amidoxime derivatives to amidine derivatives, which require harsh conditions such as using a strong acid, high temperature, and expensive catalysts. Benzo[d]imidazoles, benzo[d]oxazoles, and amides can also be synthesized by applying this method. The photoproducts were analyzed by various spectroscopic and analytical techniques, including thin-layer chromatography, column chromatography, high-performance liquid chromatography, gas chromatography/mass spectrometry, IR, 1H NMR, 13C NMR, and MS. Notably, the chromatographic analyses proved that the best time for the production of N-arylthiophene-2-carboxamidines is 20 min. The reaction mechanism comprising pathways and intermediates was also suggested via the homolysis of N-O and C-N bonds.
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29
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Antibacterial activity of singly and doubly modified salinomycin derivatives. Bioorg Med Chem Lett 2020; 30:127062. [DOI: 10.1016/j.bmcl.2020.127062] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 02/21/2020] [Accepted: 02/23/2020] [Indexed: 11/19/2022]
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Abdulrehman T, Qadri S, Skariah S, Sultan A, Mansour S, Azzi J, Haik Y. Boron doped silver-copper alloy nanoparticle targeting intracellular S. aureus in bone cells. PLoS One 2020; 15:e0231276. [PMID: 32275737 PMCID: PMC7147743 DOI: 10.1371/journal.pone.0231276] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 03/19/2020] [Indexed: 02/08/2023] Open
Abstract
OBJECTIVES Alloyed metallic nanoparticles of silver and copper are effective against intracellular infection. However, systemic toxicity may arise due to the non-specific delivery of the nanoparticles. In addressing the issue, this study deals with the targeting of silver-copper-boron (ACB) nanoparticles to infected osteoblasts, which could decrease systemic toxicity and form the basis of targeting specific markers expressed in bone infections. METHODS ACB nanoparticles were synthesized and conjugated to the Cadherin-11 antibody (OBAb). The effect of targeting nanoparticles against extracellular and intracellular S. aureus was determined by enumeration of bacterial growth. The binding of the targeting nanoparticles to infected osteoblasts as well as the visualization of live/dead bacteria due to treatment was carried out using fluorescence microscopy. MTT assay was used to determine the viability of osteoblasts with different concentrations of the nanoparticles. RESULTS The ACB nanoparticles conjugated to OBAb (ACB-OBAb) were effective against extracellular S. aureus. The ACB-OBAb nanoparticles showed a 1.32 log reduction of intracellular S. aureus at a concentration of 1mg/L. The ACB-OBAb nanoparticles were able to bind to the infected osteoblast and showed toxicity to osteoblasts at levels ≥20mg/L. Also, the percentage of silver, copper, and boron in the nanoparticles determined the effectiveness of their antibacterial activity. CONCLUSION The ACB-OBAb nanoparticles were able to target the osteoblasts and demonstrated significant antibacterial activity against intracellular S. aureus. Targeting shows promise as a strategy to target specific markers expressed on infected osteoblasts for efficient nanoparticle delivery, and further animal studies are recommended to test its efficacy in vivo.
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Affiliation(s)
- Tahir Abdulrehman
- College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar
| | - Shahnaz Qadri
- College of Science and Engineering, Hamad Bin Khalifa University, Doha, Qatar
| | - Sini Skariah
- Weil Cornell Medicine-Qatar, Education City, Doha, Qatar
| | - Ali Sultan
- Weil Cornell Medicine-Qatar, Education City, Doha, Qatar
| | - Said Mansour
- Qatar Environment and Energy Research Institute (QEERI), Hamad Bin Khalifa University, Doha, Qatar
| | - Jamil Azzi
- Brigham and Women’s Hospital, Harvard Medical School, Boston, United States of America
| | - Yousef Haik
- College of Science and Engineering, Hamad Bin Khalifa University, Doha, Qatar
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