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Mostafa EM, Badr Y, Ramadan MA, Hashem MMM, Abo-El-Sooud K, Deif HN, Faid AH. Laser enhanced photothermal effect of silver nanoparticles synthesized by chemical and green method on Gram-positive and Gram-negative bacteria. BMC Chem 2024; 18:163. [PMID: 39227976 PMCID: PMC11370005 DOI: 10.1186/s13065-024-01263-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 08/05/2024] [Indexed: 09/05/2024] Open
Abstract
PURPOSE The antibacterial properties of silver nanoparticles (AgNPs) are extensively identified. In large quantities, they might be harmful. So many fields of nanotechnology have shown a great deal of interest in the development of an environmentally friendly, efficient method for synthesizing metal nanoparticles. Because of its antibacterial and antifungal properties toward a wide range of microbes, chitosan silver nanoparticles (AgNPs@Cs) constitute a newly developing class of bio-nanostructured hybrid materials. Furthermore, the use of photothermal therapy (PTT) has been suggested as a means of elimination of germs. These light-stimulated treatments are minimally invasive and have a few side effects. In the present work, the antibacterial effect of AgNPs at low concentrations; prepared by chemical and green methods as antimicrobial and photothermal agents in photothermal therapy; with laser irradiation were explored as combined treatment against MRSA, Pseudomonas aeruginosa, and Klebsiella pneumoniae. METHODS Silver nanoparticles were produced in two ways. First, by sodium borohydrides, second, by chitosan (as a natural eco-friendly reducing, and capping agent). The nanostructure of AgNPs and AgNPs@Cs was confirmed by UV-visible spectrometer, transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIRs), and direct light scattering (DLS). The antibacterial activity of the prepared nanoparticles and the laser irradiation was tested against three bacterial species of zoonotic importance; MRSA, Pseudomonas aeruginosa, and Klebsiella pneumoniae; and was evaluated by measuring their minimum inhibitory concentrations (MIC). RESULTS Silver nanoparticles produced by the two methods had spherical shapes with nearly the same particle size. The analysis of DLS showed that AgNPs were very stable with zeta potential - 28.8 mv, and 47.7 mv by chemical and chitosan synthesis, respectively. Furthermore, AgNPs@Cs showed higher antibacterial activity toward the tested bacterial species than AgNPs by chemical method. Additionally, the bacterial viability using photothermal laser therapy was reduced compared to laser and AgNPs alone. The bactericidal activities were higher when laser diode was coupled with AgNPs@Cs than by chemical reduction. CONCLUSION The laser combined treatment had a higher antimicrobial effect than AgNPs alone or laser irradiation alone.
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Affiliation(s)
- Elham M Mostafa
- Department of Laser Sciences and Interactions, National Institute of Laser Enhanced Science (NILES), Cairo University, Giza, Egypt
| | - Y Badr
- Department of Laser Sciences and Interactions, National Institute of Laser Enhanced Science (NILES), Cairo University, Giza, Egypt
| | - Marwa A Ramadan
- Department of Laser Application in Metrology, Photochemistry, and Agriculture, National Institute for Laser Enhanced Science (NILES), Cairo University, Giza, Egypt
| | - Mohamed M M Hashem
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Khaled Abo-El-Sooud
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Heba N Deif
- Microbiology Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Amna H Faid
- Department of Laser Sciences and Interactions, National Institute of Laser Enhanced Science (NILES), Cairo University, Giza, Egypt.
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Vadakkan K, Ngangbam AK, Sathishkumar K, Rumjit NP, Cheruvathur MK. A review of chemical signaling pathways in the quorum sensing circuit of Pseudomonas aeruginosa. Int J Biol Macromol 2024; 254:127861. [PMID: 37939761 DOI: 10.1016/j.ijbiomac.2023.127861] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 10/26/2023] [Accepted: 11/01/2023] [Indexed: 11/10/2023]
Abstract
Pseudomonas aeruginosa, an increasingly common competitive and biofilm organism in healthcare infection with sophisticated, interlinked and hierarchic quorum systems (Las, Rhl, PQS, and IQS), creates the greatest threats to the medical industry and has rendered prevailing chemotherapy medications ineffective. The rise of multidrug resistance has evolved into a concerning and potentially fatal occurrence for human life. P. aeruginosa biofilm development is assisted by exopolysaccharides, extracellular DNA, proteins, macromolecules, cellular signaling and interaction. Quorum sensing is a communication process between cells that involves autonomous inducers and regulators. Quorum-induced infectious agent biofilms and the synthesis of virulence factors have increased disease transmission, medication resistance, infection episodes, hospitalizations and mortality. Hence, quorum sensing may be a potential therapeutical target for bacterial illness, and developing quorum inhibitors as an anti-virulent tool could be a promising treatment strategy for existing antibiotics. Quorum quenching is a prevalent technique for treating infections caused by microbes because it diminishes microbial pathogenesis and increases microbe biofilm sensitivity to antibiotics, making it a potential candidate for drug development. This paper examines P. aeruginosa quorum sensing, the hierarchy of quorum sensing mechanism, quorum sensing inhibition and quorum sensing inhibitory agents as a drug development strategy to supplement traditional antibiotic strategies.
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Affiliation(s)
- Kayeen Vadakkan
- Department of Biology, St. Mary's College, Thrissur, Kerala 680020, India; Manipur International University, Imphal, Manipur 795140, India.
| | | | - Kuppusamy Sathishkumar
- Rhizosphere Biology Laboratory, Department of Microbiology, Bharathidasan University, Tiruchirappalli, Tamil Nadu 620024, India; Department of Computational Biology, Institute of Bioinformatics, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Thandalam, Chennai 602 105, Tamil Nadu, India
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Hamouda RA, Makharita RR, Qarabai FAK, Shahabuddin FS, Saddiq AA, Bahammam LA, El-Far SW, Bukhari MA, Elaidarous MA, Abdella A. Antibacterial Activities of Ag/Cellulose Nanocomposites Derived from Marine Environment Algae against Bacterial Tooth Decay. Microorganisms 2023; 12:1. [PMID: 38276170 PMCID: PMC10820646 DOI: 10.3390/microorganisms12010001] [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: 11/14/2023] [Revised: 12/04/2023] [Accepted: 12/15/2023] [Indexed: 01/27/2024] Open
Abstract
Dental caries is an infectious oral disease caused by the presence of different bacteria in biofilms. Multidrug resistance (MDR) is a major challenge of dental caries treatment. Swabs were taken from 65 patients with dental caries in Makkah, Saudi Arabia. Swabs were cultivated on mitis salivarius agar and de Man, Rogosa, and Sharpe (MRS) agar. VITEK 2 was used for the identification of isolated bacteria. Antibiotic susceptibility testing of the isolated bacteria was performed using commercial antibiotic disks. Ulva lactuca was used as a reducing agent and cellulose source to create nanocellulose and Ag/cellulose nanocomposites. Fourier-transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray diffraction spectroscopy (XRD) were used to characterize nanocellulose and Ag/cellulose nanocomposites. The results showed that most bacterial isolates were Streptococcus spp., followed by Staphylococcus spp. on mitis salivarius media. Lactobacillus spp. and Corynebacterium group f-1 were the bacterial isolates on de Man, Rogosa, and Sharpe (MRS) media. The antibiotic susceptibility test revealed resistance rates of 77%, 93%, 0, 83%, 79%, and 79% against penicillin G, Augmentin, metronidazole, ampicillin, ciprofloxacin, and cotrimoxazole, respectively. Ag/cellulose nanocomposites and Ag/cellulose nanocomposites with fluoride were the most effective antibacterial agents. The aim of this work was to assess the antibacterial activity of Ag/cellulose nanocomposites with and without fluoride against bacteria isolated from the oral cavities of patients with dental caries. This study demonstrated that Ag/cellulose nanocomposites have antibacterial properties against multidrug-resistant bacteria that cause dental caries.
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Affiliation(s)
- Ragaa A. Hamouda
- Department of Biology, College of Sciences and Arts at Khulis, University of Jeddah, Jeddah 21959, Saudi Arabia; (R.A.H.); (R.R.M.); (F.A.K.Q.); (A.A.S.)
- Department of Microbial Biotechnology, Genetic Engineering and Biotechnology Research Institute (GEBRI), University of Sadat City, Sadat City 32897, Egypt
| | - Rabab R. Makharita
- Department of Biology, College of Sciences and Arts at Khulis, University of Jeddah, Jeddah 21959, Saudi Arabia; (R.A.H.); (R.R.M.); (F.A.K.Q.); (A.A.S.)
- Botany and Microbiology Department, Faculty of Science, Suez Canal University, Ismailia 41522, Egypt
| | - Fauzia A. K. Qarabai
- Department of Biology, College of Sciences and Arts at Khulis, University of Jeddah, Jeddah 21959, Saudi Arabia; (R.A.H.); (R.R.M.); (F.A.K.Q.); (A.A.S.)
| | | | - Amna A. Saddiq
- Department of Biology, College of Sciences and Arts at Khulis, University of Jeddah, Jeddah 21959, Saudi Arabia; (R.A.H.); (R.R.M.); (F.A.K.Q.); (A.A.S.)
| | - Laila Ahmed Bahammam
- Department of Endodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
| | - Shaymaa W. El-Far
- Division of Pharmaceutical Microbiology, Department of Pharmaceutics and Industrial Pharmacy, College of Pharmacy, Taif University, Taif 21974, Saudi Arabia;
| | - Mamdouh A. Bukhari
- Regional Laboratory, Laboratories and Blood Banks Administration, Ministry of Health, 7780 Wali Alahed, Makkah P.O. Box 24353-4537, Saudi Arabia; (M.A.B.); (M.A.E.)
| | - Mohammad A. Elaidarous
- Regional Laboratory, Laboratories and Blood Banks Administration, Ministry of Health, 7780 Wali Alahed, Makkah P.O. Box 24353-4537, Saudi Arabia; (M.A.B.); (M.A.E.)
| | - Asmaa Abdella
- Department of Industrial Biotechnology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City 32897, Egypt
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Ngo VN, Truong TNT, Tran TT, Nguyen LT, Mach NB, Vu VV, Nguyen TTH, Vu TM. A Combination of Blue Light at 460 nm and H 2O 2 for the Safe and Effective Eradication of Staphylococcus aureus in an Infected Mouse Skin Abrasion Model. Microorganisms 2023; 11:2946. [PMID: 38138090 PMCID: PMC10745725 DOI: 10.3390/microorganisms11122946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 11/29/2023] [Accepted: 11/30/2023] [Indexed: 12/24/2023] Open
Abstract
Antibiotic-free approaches are more important than ever to address the rapidly growing problem of the antibiotic resistance crisis. The photolysis of the bacterial virulence factor staphyloxanthin using blue light at 460 nm (BL460 nm) has been found to effectively attenuate Staphylococcus aureus to chemical and physical agents. However, phototherapy using BL640 nm still needs to be investigated in detail for its safety in eradicating Staphylococcus aureus in vitro and in vivo. In this study, we employed a 460 nm continuous-wavelength LED source and a low concentration of hydrogen peroxide to treat S. aureus under a culturing condition and a wound abrasion mouse model. The results demonstrated the safety of the combined therapy when it did not modify the bacterial virulence factors or the susceptibility to widely used antibiotics. In addition, the results of the mouse model also showed that the combined therapy was safe to apply to mouse skin since it did not cause adverse skin irritation. More importantly, the therapy can aid in healing S. aureus-infected wounds with an efficacy comparable to that of the topical antibiotic Fucidin. The aforementioned findings indicate that the concurrent application of BL460 nm and hydrogen peroxide can be used safely as an alternative or adjunct to antibiotics in treating S. aureus-infected wounds.
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Affiliation(s)
- Vu Nguyen Ngo
- NTT Hi-Tech Institute, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, Ho Chi Minh City 70000, Vietnam; (V.N.N.); (L.T.N.); (N.B.M.); (V.V.V.)
| | - Thien Nguyen Thuan Truong
- School of Biotechnology, International University, Vietnam National University, Ho Chi Minh City 70000, Vietnam; (T.N.T.T.); (T.T.H.N.)
| | - Tin Trung Tran
- Ho Chi Minh City University of Technology, Vietnam National University, Ho Chi Minh City 70000, Vietnam;
| | - Loan Thanh Nguyen
- NTT Hi-Tech Institute, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, Ho Chi Minh City 70000, Vietnam; (V.N.N.); (L.T.N.); (N.B.M.); (V.V.V.)
| | - Ngoc Bao Mach
- NTT Hi-Tech Institute, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, Ho Chi Minh City 70000, Vietnam; (V.N.N.); (L.T.N.); (N.B.M.); (V.V.V.)
| | - Van Van Vu
- NTT Hi-Tech Institute, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, Ho Chi Minh City 70000, Vietnam; (V.N.N.); (L.T.N.); (N.B.M.); (V.V.V.)
| | - Thi Thu Hoai Nguyen
- School of Biotechnology, International University, Vietnam National University, Ho Chi Minh City 70000, Vietnam; (T.N.T.T.); (T.T.H.N.)
| | - Thiet Minh Vu
- NTT Hi-Tech Institute, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, Ho Chi Minh City 70000, Vietnam; (V.N.N.); (L.T.N.); (N.B.M.); (V.V.V.)
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Zintle M, Siwaphiwe P, Marthe Carine F, Thierry Youmbi F, Derek Tantoh N, Suprakas Sinha R, Blessing Atim A. Antibacterial study of carbopol-mastic gum/silver nanoparticle-based topical gels with carvacrol/neem bark extract in vitro. J Wound Care 2023; 32:clxxxi-clxxxix. [PMID: 37703219 DOI: 10.12968/jowc.2023.32.sup9a.clxxxi] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/15/2023]
Abstract
BACKGROUND Resistance to antimicrobial drugs as a result of prolonged use usually results in clinical failure, especially in wound infections. Development of effective antimicrobial therapeutics for the management of infected wounds from a natural source with improved therapeutic effects is a pressing need. OBJECTIVE In this study, carbopol-mastic gum-based topical gels were loaded with silver nanoparticles in combination with either neem bark extract or carvacrol oil. The effect of combining silver nanoparticles with neem bark extract or the essential oil carvacrol in the prepared gel formulations was investigated on selected bacterial strains. METHOD The prepared gels were characterised by Fourier transform infrared (FTIR) spectroscopy, transmission electron microscopy (TEM) and ultraviolet-visible (UV-vis) spectroscopy, followed by antimicrobial analysis against selected strains of bacteria. RESULTS There was no interaction between the loaded natural extract or essential oil and the polymer used for the preparation of the formulations, which was visible from the FTIR spectra of the formulations. The gels were selective and effective against selected strains of bacteria. However, the combination of the silver nanoparticles with essential oil or natural extract in some of the gel formulations rendered the formulation ineffective against some of the bacterial strains. CONCLUSION The gel formulations were effective against bacterial strains such as Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus and Enterococcus faecalis which are the common causes of wound infections. Incorporation of silver nanoparticles into the topical formulations with natural extracts is usually a good approach to overcome antibiotic-resistant infections. However, the combination of antibacterial agents must be managed carefully.
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Affiliation(s)
- Mbese Zintle
- Department of Chemistry, University of Fort Hare, Alice Campus, Eastern Cape, South Africa
| | - Peteni Siwaphiwe
- Department of Chemistry, University of Fort Hare, Alice Campus, Eastern Cape, South Africa
| | - Fotsing Marthe Carine
- Department of Applied Chemistry, University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa
| | - Fonkui Thierry Youmbi
- Department of Applied Chemistry, University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa
| | - Ndinteh Derek Tantoh
- Department of Applied Chemistry, University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa
| | - Ray Suprakas Sinha
- Department of Applied Chemistry, University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa
- DST/CSIR National Centre for Nanostructured Materials, Council for Scientific and Industrial Research, Pretoria 0001, South Africa
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Sabzi N, Moniri R, Sehat M, Fathizadeh H, Nazari-Alam A. Antimicrobial effect of silver and gold nanoparticles in combination with linezolid on Enterococcus biofilm. IRANIAN JOURNAL OF MICROBIOLOGY 2022; 14:863-873. [PMID: 36721451 PMCID: PMC9867620 DOI: 10.18502/ijm.v14i6.11261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Background and Objectives In the past few years, application of new antimicrobial e.g. nanoparticles (NPs) to treat infection caused by drug-resistant bacteria has increased. This study aimed to determine antimicrobial property of silver nanoparticles (AgNPs) and gold nanoparticles (AuNPs) in combination with linezolid on Enterococcus biofilm. Materials and Methods A total of forty-eight isolates of Enterococcus spp. were collected and confirmed by PCR method. The synthesis of biocompatible AgNPs was performed, then analyzed by Fourier Transform Infrared spectroscopy (FTIR), Scanning Electron Microscopy (SEM), and Transmission Electron Microscopy. We carried out minimum inhibitory concentration (MIC) and biofilm forming capacity of AgNPs and AuNPs with linezolid. Results Twenty-two E. faecium isolates and twentysix E. faecalis investigated in this study. Strong biofilm formation was seen in 12 (25%) of isolates, and others isolates (75%) formed moderate biofilm. AgNPs and Au-NPs size were 26 nm and 20 nm respectively. The MIC of AgNPs was 23.2 μg/ml, and AuNPs were 92.1 μg/ml and the lowest MIC was obtained 2 μg/ml in linezolid. Biofilm formation inhibitory activity by AuNPs + Linezolide and AgNPs + Linezolide 70 to 80 percent increased in average. Conclusion The antibiofilm activity of AgNPs and AuNPs increased when both agents were used in combination with linezolid in comparison with each agent alone.
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Affiliation(s)
- Niloofar Sabzi
- Department of Microbiology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Rezvan Moniri
- Department of Microbiology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Mojtaba Sehat
- Trauma Research Center, Kashan University of Medical Sciences, Kashan, Iran
| | - Hadis Fathizadeh
- Student Research Committee, Sirjan School of Medical Sciences, Sirjan, Iran,Department of Laboratory Sciences, Sirjan School of Medical Sciences, Sirjan, Iran
| | - Ali Nazari-Alam
- Department of Microbiology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran,Infectious Diseases Research Center, Kashan University of Medical Sciences, Kashan, Iran,Corresponding author: Ali Nazari-Alam, Ph.D, Department of Microbiology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran; Infectious Diseases Research Center, Kashan University of Medical Sciences, Kashan, Iran. Tel: +98-3155540021-25 Fax: +98-3155541112
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Sajjad A, Bhatti SH, Zia M. Photo excitation of silver ions during the synthesis of silver nanoparticles modify physiological, chemical, and biological properties. PARTICULATE SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1080/02726351.2022.2126340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Anila Sajjad
- Department of Biotechnology, Quaid-i-Azam University, Islamabad, Pakistan
| | | | - Muhammad Zia
- Department of Biotechnology, Quaid-i-Azam University, Islamabad, Pakistan
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Knowledgebase of potential multifaceted solutions to antimicrobial resistance. Comput Biol Chem 2022; 101:107772. [PMID: 36155273 DOI: 10.1016/j.compbiolchem.2022.107772] [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: 06/09/2022] [Revised: 08/16/2022] [Accepted: 09/13/2022] [Indexed: 11/24/2022]
Abstract
Antimicrobial resistance (AMR), a top threat to global health, challenges preventive and treatment strategies of infections. AMR strains of microbial pathogens arise through multiple mechanisms. The underlying "antibiotic resistance genes" (ARGs) spread through various species by lateral gene transfer thereby causing global dissemination. Human methods also augment this process through inappropriate use, non-compliance to treatment schedule, and environmental waste. Worldwide significant efforts are being invested to discover novel therapeutic solutions for tackling resistant pathogens. Diverse therapeutic strategies have evolved over recent years. In this work we have developed a comprehensive knowledgebase by collecting alternative antimicrobial therapeutic strategies from literature data. Therapeutic strategies against bacteria, virus, fungus and parasites were extracted from PubMed literature using text mining. We have used a subjective (sentimental) approach for data mining new strategies, resulting in broad coverage of novel entities and subsequently add objective data like entity name (including IUPAC), potency, and safety information. The extracted data was organized in a freely accessible web platform, KOMBAT. The KOMBAT comprises 1104 Chemical compounds, 220 of newly identified antimicrobial peptides, 42 bacteriophages, 242 phytochemicals, 106 nanocomposites, and 94 novel entities for phototherapy. Entities tested and evaluated on AMR pathogens are included. We envision that this database will be useful for developing future therapeutics against AMR pathogens. The database can be accessed through http://kombat.igib.res.in/.
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Kaur S, Tambat R, Pathania V, Nandanwar H, Soni S. Photo-thermally enhanced antimicrobial efficacy of silver nanoplates against Gram-negative, Gram-positive bacterial and fungal pathogens. J Appl Microbiol 2022; 133:569-578. [PMID: 35451155 DOI: 10.1111/jam.15588] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 04/08/2022] [Accepted: 04/19/2022] [Indexed: 11/29/2022]
Abstract
AIM This paper aims to investigate the photo-thermally enhanced antimicrobial efficacy of triangular silver nanoplates for a broad range of harmful pathogens viz., Gram-negative bacteria (Escherichia coli), Gram-positive bacteria (Staphylococcus aureus), and fungus (Candida albicans). METHODS AND RESULTS Triangular silver nanoplates were synthesized using the chemical method and were characterized for optical absorption, size and morphology, surface charge and concentration via UV-Vis spectroscopy, transmission electron microscopy, zeta potential analysis and inductively coupled plasma mass spectrometry, respectively. Furthermore, the photo-thermally enhanced antimicrobial efficacy of the triangular silver nanoplates (10 μg/ml concentration) was evaluated on broadband near-infrared irradiation. The photothermal response shows that for the fixed concentration of silver nanoplates, the smaller-sized nanoplates (~52 nm) lead to higher temperature rise than larger-sized nanoplates (~68 nm). It is demonstrated that within a short exposure duration of 15 min, the photothermal activation of silver nanoplates led to ~5 log10 CFU/ml reduction for E. coli and C. albicans, and ~7 log10 CFU/ml reduction for S. aureus from a considerably high initial load of 5 × 108 CFU/ml. CONCLUSIONS The present study demonstrates that photo-thermally enhanced triangular silver nanoplates possess much stronger antimicrobial efficacy over a short exposure duration of few minutes and exhibits the applicability for a broad range of pathogens. SIGNIFICANCE AND IMPACT OF STUDY The study is highly significant and explains the eradication of broad-spectrum of microbial pathogens by photo-thermally enhanced silver nanoplates in short exposure duration with low nanoparticle concentration, which is useful for diverse antibacterial and antifungal applications.
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Affiliation(s)
- Sarabjot Kaur
- CSIR-Central Scientific Instruments Organisation, Chandigarh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | | | - Vikas Pathania
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
- CSIR-Institute of Microbial Technology, Chandigarh, India
| | - Hemraj Nandanwar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
- CSIR-Institute of Microbial Technology, Chandigarh, India
| | - Sanjeev Soni
- CSIR-Central Scientific Instruments Organisation, Chandigarh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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Akasov R, Khaydukov EV, Yamada M, Zvyagin AV, Leelahavanichkul A, Leanse LG, Dai T, Prow T. Nanoparticle enhanced blue light therapy. Adv Drug Deliv Rev 2022; 184:114198. [PMID: 35301045 DOI: 10.1016/j.addr.2022.114198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 12/13/2021] [Accepted: 03/08/2022] [Indexed: 11/26/2022]
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Bishoyi AK, Sahoo CR, Padhy RN. Recent progression of cyanobacteria and their pharmaceutical utility: an update. J Biomol Struct Dyn 2022; 41:4219-4252. [PMID: 35412441 DOI: 10.1080/07391102.2022.2062051] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Cyanobacteria (blue-green algae) are Gram-negative photosynthetic eubacteria that are found everywhere. This largest group of photosynthetic prokaryotes is rich in structurally novel and biologically active compounds; several of which have been utilized as prospective drugs against cancer and other ailments, as well. Consequently, the integument of nanoparticles-synthetic approaches in cyanobacterial extracts should increase pharmacological activity. Moreover, silver nanoparticles (AgNPs) are small materials with diameters below 100 nm that are classified into different classes based on their forms, sizes, and characteristics. Indeed, the biosynthesized AgNPs are generated with a variety of organisms, algae, plants, bacteria, and a few others, for the medicinal purposes, as the bioactive compounds of curio and some proteins from cyanobacteria have the potentiality in the treatment of a wide range of infectious diseases. The critical focus of this review is on the antimicrobial, antioxidant, and anticancer properties of cyanobacteria. This would be useful in the pharmaceutical industries in the future drug development cascades.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Ajit Kumar Bishoyi
- Central Research Laboratory, Institute of Medical Sciences and Sum Hospital, Siksha "O" Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India
| | - Chita Ranjan Sahoo
- Central Research Laboratory, Institute of Medical Sciences and Sum Hospital, Siksha "O" Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India
| | - Rabindra Nath Padhy
- Central Research Laboratory, Institute of Medical Sciences and Sum Hospital, Siksha "O" Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India
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Role of Implantable Drug Delivery Devices with Dual Platform Capabilities in the Prevention and Treatment of Bacterial Osteomyelitis. Bioengineering (Basel) 2022; 9:bioengineering9020065. [PMID: 35200418 PMCID: PMC8869141 DOI: 10.3390/bioengineering9020065] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 02/01/2022] [Accepted: 02/03/2022] [Indexed: 11/26/2022] Open
Abstract
As medicine advances and physicians are able to provide patients with innovative solutions, including placement of temporary or permanent medical devices that drastically improve quality of life of the patient, there is the persistent, recurring problem of chronic bacterial infection, including osteomyelitis. Osteomyelitis can manifest as a result of traumatic or contaminated wounds or implant-associated infections. This bacterial infection can persist as a result of inadequate treatment regimens or the presence of biofilm on implanted medical devices. One strategy to mitigate these concerns is the use of implantable medical devices that simultaneously act as local drug delivery devices (DDDs). This classification of device has the potential to prevent or aid in clearing chronic bacterial infection by delivering effective doses of antibiotics to the area of interest and can be engineered to simultaneously aid in tissue regeneration. This review will provide a background on bacterial infection and current therapies as well as current and prospective implantable DDDs, with a particular emphasis on local DDDs to combat bacterial osteomyelitis.
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El-Gendy AO, Samir A, Ahmed E, Enwemeka CS, Mohamed T. The antimicrobial effect of 400 nm femtosecond laser and silver nanoparticles on gram-positive and gram-negative bacteria. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2021; 223:112300. [PMID: 34455353 DOI: 10.1016/j.jphotobiol.2021.112300] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 08/13/2021] [Accepted: 08/23/2021] [Indexed: 10/20/2022]
Abstract
Silver nanoparticles are well-known for their antimicrobial effect. However, they are potentially toxic in high doses. We explored the possibility of enhancing the bactericidal effect of low concentrations of silver nanoparticles with blue light femtosecond laser irradiation, since such concentrations are less toxic. The growth dynamics of Pseudomonas aeruginosa, Listeria monocytogenes and methicillin-resistant Staphylococcus aureus grown in pre-synthesized silver nanoparticles were measured with or without pre-irradiation with 50 mW and 400 nm femtosecond laser irradiation. With each bacterium, combined treatment with laser and silver nanoparticles significantly reduced bacterial growth, indicating that this form of treatment could be beneficial in the ongoing efforts to reduce the deleterious effects of antibiotic resistant Gram-positive and Gram-negative bacteria. The combined treatment was more antimicrobial than treatment with silver nanoparticles alone or photo-irradiation alone. P. aeruginosa and L. monocytogenes were more susceptible to the bactericidal effects of silver nanoparticles, and the combination of laser treatment and silver nanoparticles than MRSA.
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Affiliation(s)
- Ahmed O El-Gendy
- Laser Institute for Research and Applications LIRA, Beni-Suef University, Beni-Suef 62511, Egypt; Faculty of Pharmacy, Department of Microbiology and Immunology, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Ahmed Samir
- Laser Institute for Research and Applications LIRA, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Esraa Ahmed
- Laser Institute for Research and Applications LIRA, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Chukuka S Enwemeka
- College of Health and Human Services, San Diego State University, San Diego, CA 92182, USA
| | - Tarek Mohamed
- Laser Institute for Research and Applications LIRA, Beni-Suef University, Beni-Suef 62511, Egypt.
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Nainu F, Permana AD, Djide NJN, Anjani QK, Utami RN, Rumata NR, Zhang J, Emran TB, Simal-Gandara J. Pharmaceutical Approaches on Antimicrobial Resistance: Prospects and Challenges. Antibiotics (Basel) 2021; 10:981. [PMID: 34439031 PMCID: PMC8388863 DOI: 10.3390/antibiotics10080981] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 08/07/2021] [Accepted: 08/12/2021] [Indexed: 02/06/2023] Open
Abstract
The rapid increase in pathogenic microorganisms with antimicrobial resistant profiles has become a significant public health problem globally. The management of this issue using conventional antimicrobial preparations frequently results in an increase in pathogen resistance and a shortage of effective antimicrobials for future use against the same pathogens. In this review, we discuss the emergence of AMR and argue for the importance of addressing this issue by discovering novel synthetic or naturally occurring antibacterial compounds and providing insights into the application of various drug delivery approaches, delivered through numerous routes, in comparison with conventional delivery systems. In addition, we discuss the effectiveness of these delivery systems in different types of infectious diseases associated with antimicrobial resistance. Finally, future considerations in the development of highly effective antimicrobial delivery systems to combat antimicrobial resistance are presented.
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Affiliation(s)
- Firzan Nainu
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Sulawesi Selatan, Indonesia; (A.D.P.); (N.J.N.D.); (Q.K.A.); (R.N.U.); (N.R.R.)
| | - Andi Dian Permana
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Sulawesi Selatan, Indonesia; (A.D.P.); (N.J.N.D.); (Q.K.A.); (R.N.U.); (N.R.R.)
| | - Nana Juniarti Natsir Djide
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Sulawesi Selatan, Indonesia; (A.D.P.); (N.J.N.D.); (Q.K.A.); (R.N.U.); (N.R.R.)
| | - Qonita Kurnia Anjani
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Sulawesi Selatan, Indonesia; (A.D.P.); (N.J.N.D.); (Q.K.A.); (R.N.U.); (N.R.R.)
- Medical Biology Centre, School of Pharmacy, Queen’s University Belfast, Belfast BT9 7BL, UK
| | - Rifka Nurul Utami
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Sulawesi Selatan, Indonesia; (A.D.P.); (N.J.N.D.); (Q.K.A.); (R.N.U.); (N.R.R.)
- Institute of Pharmaceutical Science, King’s College of London, London SE1 9NH, UK
| | - Nur Rahma Rumata
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Sulawesi Selatan, Indonesia; (A.D.P.); (N.J.N.D.); (Q.K.A.); (R.N.U.); (N.R.R.)
- Sekolah Tinggi Ilmu Farmasi Makassar, Makassar 90242, Sulawesi Selatan, Indonesia
| | - Jianye Zhang
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State & NMPA Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, China;
| | - Talha Bin Emran
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong 4381, Bangladesh
| | - Jesus Simal-Gandara
- Nutrition and Bromatology Group, Department of Analytical and Food Chemistry, Faculty of Food Science and Technology, University of Vigo–Ourense Campus, E32004 Ourense, Spain
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15
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Gad El-Rab SMF, Halawani EM, Alzahrani SSS. Biosynthesis of silver nano-drug using Juniperus excelsa and its synergistic antibacterial activity against multidrug-resistant bacteria for wound dressing applications. 3 Biotech 2021; 11:255. [PMID: 33987072 DOI: 10.1007/s13205-021-02782-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 04/05/2021] [Indexed: 02/07/2023] Open
Abstract
We report here the synthesis of silver nanoparticles (AgNPs) from an aqueous extract of Juniperus excelsa and their use as an antimicrobial agent on their own or in combination with antibiotics in inhibiting multidrug-resistant bacteria (MDR). One strategy of bacterial infection control in wound healing is AgNP biosynthesis. We collected bacterial strains of patient skin infections from Al-Adwani Hospital. Phenotyping, biotyping, and molecular characterizations were applied using 16S rRNA gene analysis of bacterial isolates. Our results identified tested MDR bacteria Staphylococcus aureus strains (methicillin-resistant and methicillin-susceptible) and Proteus mirabilis. Gas chromatography/mass spectrometry (GC/MS) analysis was used to identify the Juniperus excelsa biomolecules in the leaf extract acting as both reducing and capping agents in the biosynthesis of AgNPs. The AgNPs appeared hexagonal and spherical in shape upon transmission electron microscope (TEM) analysis. The AgNP sizes ranged from 16.08 to 24.42 nm. X-ray diffraction (XRD) analysis confirmed the crystalline nature of the particles. The minimum inhibitory concentrations (MICs) of the AgNPs against the tested MDR bacteria ranged from 48 to 56 µg/ml, while the minimum bactericidal concentrations (MBCs) of the AgNPs against the tested strains ranged from 72 to 96 µg/ml. The AgNPs showed a good synergistic efficacy with Cefaclor, Cefoxitin, and Erythromycin. Their efficiency showed a threefold increase in the inhibition of tested strains when used in wound dressing, due to the AgNPs potentially activating the antibiotics. Consequently, we can use AgNPs with Cefaclor, Cefoxitin, and Erythromycin antibiotics as alternative antimicrobial agents, and they could be utilized in wound dressing to prevent microbial infections.
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Mba IE, Nweze EI. Nanoparticles as therapeutic options for treating multidrug-resistant bacteria: research progress, challenges, and prospects. World J Microbiol Biotechnol 2021; 37:108. [PMID: 34046779 PMCID: PMC8159659 DOI: 10.1007/s11274-021-03070-x] [Citation(s) in RCA: 93] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Accepted: 05/16/2021] [Indexed: 11/17/2022]
Abstract
Resistance to antimicrobial agents has been alarming in recent years and poses a huge public health threat globally according to the WHO. The increase in morbidity and mortality resulting from microbial infections has been attributed to the emergence of multidrug-resistant microbes. Associated with the increase in multidrug resistance is the lack of new and effective antimicrobials. This has led to global initiatives to identify novel and more effective antimicrobial agents in addition to discovering novel and effective drug delivery and targeting methods. The use of nanoparticles as novel biomaterials to fully achieve this feat is currently gaining global attention. Nanoparticles could become an indispensable viable therapeutic option for treating drug-resistant infections. Of all the nanoparticles, the metals and metal oxide nanoparticles appear to offer the most promise and have attracted tremendous interest from many researchers. Moreover, the use of nanomaterials in photothermal therapy has received considerable attention over the years. This review provides current insight on antimicrobial resistance as well as the mechanisms of nanoparticle antibacterial activity. It offers an in-depth review of all the recent findings in the use of nanomaterials as agents against multi-resistant pathogenic bacteria. Also, nanomaterials that can respond to light stimuli (photothermal therapy) to kill microbes and facilitate enhanced drug delivery and release are discussed. Moreover, the synergistic interactions of nanoparticles with antibiotics and other nanomaterials, microbial adaptation strategies to nanoparticles, current challenges, and future prospects were extensively discussed.
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Affiliation(s)
- Ifeanyi E Mba
- Department of Microbiology, University of Nigeria, Nsukka, Nigeria
| | - Emeka I Nweze
- Department of Microbiology, University of Nigeria, Nsukka, Nigeria.
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17
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Mba IE, Nweze EI. Nanoparticles as therapeutic options for treating multidrug-resistant bacteria: research progress, challenges, and prospects. World J Microbiol Biotechnol 2021. [PMID: 34046779 DOI: 10.1007/s11274-021-03070-x/tables/5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/23/2023]
Abstract
Resistance to antimicrobial agents has been alarming in recent years and poses a huge public health threat globally according to the WHO. The increase in morbidity and mortality resulting from microbial infections has been attributed to the emergence of multidrug-resistant microbes. Associated with the increase in multidrug resistance is the lack of new and effective antimicrobials. This has led to global initiatives to identify novel and more effective antimicrobial agents in addition to discovering novel and effective drug delivery and targeting methods. The use of nanoparticles as novel biomaterials to fully achieve this feat is currently gaining global attention. Nanoparticles could become an indispensable viable therapeutic option for treating drug-resistant infections. Of all the nanoparticles, the metals and metal oxide nanoparticles appear to offer the most promise and have attracted tremendous interest from many researchers. Moreover, the use of nanomaterials in photothermal therapy has received considerable attention over the years. This review provides current insight on antimicrobial resistance as well as the mechanisms of nanoparticle antibacterial activity. It offers an in-depth review of all the recent findings in the use of nanomaterials as agents against multi-resistant pathogenic bacteria. Also, nanomaterials that can respond to light stimuli (photothermal therapy) to kill microbes and facilitate enhanced drug delivery and release are discussed. Moreover, the synergistic interactions of nanoparticles with antibiotics and other nanomaterials, microbial adaptation strategies to nanoparticles, current challenges, and future prospects were extensively discussed.
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Affiliation(s)
- Ifeanyi E Mba
- Department of Microbiology, University of Nigeria, Nsukka, Nigeria
| | - Emeka I Nweze
- Department of Microbiology, University of Nigeria, Nsukka, Nigeria.
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18
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da Silva PB, Araújo VHS, Fonseca-Santos B, Solcia MC, Ribeiro CM, da Silva IC, Alves RC, Pironi AM, Silva ACL, Victorelli FD, Fernandes MA, Ferreira PS, da Silva GH, Pavan FR, Chorilli M. Highlights Regarding the Use of Metallic Nanoparticles against Pathogens Considered a Priority by the World Health Organization. Curr Med Chem 2021; 28:1906-1956. [PMID: 32400324 DOI: 10.2174/0929867327666200513080719] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 02/11/2020] [Accepted: 03/20/2020] [Indexed: 11/22/2022]
Abstract
The indiscriminate use of antibiotics has facilitated the growing resistance of bacteria, and this has become a serious public health problem worldwide. Several microorganisms are still resistant to multiple antibiotics and are particularly dangerous in the hospital and nursing home environment, and to patients whose care requires devices, such as ventilators and intravenous catheters. A list of twelve pathogenic genera, which especially included bacteria that were not affected by different antibiotics, was released by the World Health Organization (WHO) in 2017, and the research and development of new antibiotics against these genera has been considered a priority. The nanotechnology is a tool that offers an effective platform for altering the physicalchemical properties of different materials, thereby enabling the development of several biomedical applications. Owing to their large surface area and high reactivity, metallic particles on the nanometric scale have remarkable physical, chemical, and biological properties. Nanoparticles with sizes between 1 and 100 nm have several applications, mainly as new antimicrobial agents for the control of microorganisms. In the present review, more than 200 reports of various metallic nanoparticles, especially those containing copper, gold, platinum, silver, titanium, and zinc were analyzed with regard to their anti-bacterial activity. However, of these 200 studies, only 42 reported about trials conducted against the resistant bacteria considered a priority by the WHO. All studies are in the initial stage, and none are in the clinical phase of research.
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Affiliation(s)
- Patricia Bento da Silva
- Sao Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara-SP, Brazil
| | | | - Bruno Fonseca-Santos
- Sao Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara-SP, Brazil
| | - Mariana Cristina Solcia
- Sao Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara-SP, Brazil
| | | | | | - Renata Carolina Alves
- Sao Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara-SP, Brazil
| | - Andressa Maria Pironi
- Sao Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara-SP, Brazil
| | | | | | - Mariza Aires Fernandes
- Sao Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara-SP, Brazil
| | - Paula Scanavez Ferreira
- Sao Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara-SP, Brazil
| | - Gilmar Hanck da Silva
- Sao Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara-SP, Brazil
| | - Fernando Rogério Pavan
- Sao Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara-SP, Brazil
| | - Marlus Chorilli
- Sao Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara-SP, Brazil
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19
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Synergistic Antibacterial Effect of Casein-AgNPs Combined with Tigecycline against Acinetobacter baumannii. Polymers (Basel) 2021; 13:polym13091529. [PMID: 34068784 PMCID: PMC8126194 DOI: 10.3390/polym13091529] [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: 04/07/2021] [Revised: 05/04/2021] [Accepted: 05/05/2021] [Indexed: 01/23/2023] Open
Abstract
Acinetobacter baumannii (A. baumannii) is a common and challenging pathogen of nosocomial infections, due to its ability to survive on inanimate objects, desiccation tolerance, and resistance to disinfectants. In this study, we investigated an antibacterial strategy to combat A. baumannii via the combination of antibiotics and silver protein. This strategy used a functional platform consisting of silver nanoparticles (AgNPs) resurrected from silver-based calcium thiophosphate (SSCP) through casein and arginine. Then, the silver protein was combined with tigecycline, the first drug in glycylcycline antibiotic, to synergistically inhibit the viability of A. baumannii. The synergistic antibacterial activity was confirmed by the 96-well checkerboard method to determine their minimum inhibitory concentrations (MIC) and calculated for the combination index (CI). The MIC of the combination of silver protein and tigecycline (0.31 mg/mL, 0.16 µg/mL) was significantly lower than that of the individual MIC, and the CI was 0.59, which indicates a synergistic effect. Consequently, we integrated the detailed synergistic antibacterial properties when silver protein was combined with tigecycline. The result could make for a promising approach for the treatment of A. baumannii.
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Sajjad A, Bhatti SH, Ali Z, Jaffari GH, Khan NA, Rizvi ZF, Zia M. Photoinduced Fabrication of Zinc Oxide Nanoparticles: Transformation of Morphological and Biological Response on Light Irradiance. ACS OMEGA 2021; 6:11783-11793. [PMID: 34056332 PMCID: PMC8153977 DOI: 10.1021/acsomega.1c01512] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Accepted: 04/13/2021] [Indexed: 05/23/2023]
Abstract
The photoinduced synthesis of zinc oxide nanoparticles (ZnO NPs) was carried out to unveil the effects of change in wavelength of photons. ZnO NPs were synthesized by the coprecipitation technique exposed to different light regimes [dark environment, daylight, and blue-, green-, yellow-, and red-colored light-emitting diodes (LEDs)] at room temperature. X-ray diffractogram (XRD) revealed the wurtzite structure of ZnO NPs. A small change in the size of ZnO NPs (17.11-22.56 nm) was observed with the variation in wavelength of lights from 350 to 700 nm. Spherical to hexagonal disks and rodlike surface morphologies were observed by scanning electron microscopy (SEM). The elemental composition and surface chemistry of NPs were studied by energy-dispersive X-ray diffractive (EDX) and Fourier transform infrared (FTIR) spectra. Maximum free radical quenching activity, cation radical scavenging, and total antioxidant capacity were found in ZnO NPs synthesized under green light (28.78 ± 0.18, 30.05 ± 0.21%, and 36.55 ± 2.63 μg AAE/mg, respectively). Daylight-synthesized NPs (DL-ZNPs) showed the greatest total reducing potential (15.81 ± 0.33 μg AAE/mg) and metal-chelating activity (37.77 ± 0.31%). Photoinduced ZnO NPs showed significant enzyme inhibitory effects on amylase, lipase, and urease by red-light NPs (87.49 ± 0.19%), green-light NPs (91.44 ± 0.29%), and blue-light NPs (92.17 ± 0.34%), respectively. Photoinduced ZnO NPs have been employed as nanozymes and found to exhibit intrinsic peroxidase-like activity as well. Blue-light-synthesized ZnO NPs displayed the strongest antibacterial activity (23 mm) against methicillin-resistant Staphylococcus aureus (MRSA). This study can be considered as a novel step toward the synthetic approach using LEDs to synthesize ZnO NPs with specific physicochemical properties and extends a great prospect in the environmental chemistry, food safety, and biomedical fields as nanozyme, antioxidant, antibacterial, anti-α-amylase, antiurease, and antilipase agents.
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Affiliation(s)
- Anila Sajjad
- Department
Biotechnology, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | | | - Zeeshan Ali
- School
of Chemical and Material Engineering (SCME), National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan
| | | | - Nawazish Ali Khan
- Department
Physics, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Zarrin Fatima Rizvi
- Department
of Botany, Government College Women University, Sialkot 51310, Pakistan
| | - Muhammad Zia
- Department
Biotechnology, Quaid-i-Azam University, Islamabad 45320, Pakistan
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21
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Gkartziou F, Giormezis N, Spiliopoulou I, Antimisiaris SG. Nanobiosystems for Antimicrobial Drug-Resistant Infections. NANOMATERIALS 2021; 11:nano11051075. [PMID: 33922004 PMCID: PMC8143556 DOI: 10.3390/nano11051075] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/16/2021] [Accepted: 04/18/2021] [Indexed: 02/07/2023]
Abstract
The worldwide increased bacterial resistance toward antimicrobial therapeutics has led investigators to search for new therapeutic options. Some of the options currently exploited to treat drug-resistant infections include drug-associated nanosystems. Additionally, the use of bacteriophages alone or in combination with drugs has been recently revisited; some studies utilizing nanosystems for bacteriophage delivery have been already reported. In this review article, we focus on nine pathogens that are the leading antimicrobial drug-resistant organisms, causing difficult-to-treat infections. For each organism, the bacteriophages and nanosystems developed or used in the last 20 years as potential treatments of pathogen-related infections are discussed. Summarizing conclusions and future perspectives related with the potential of such nano-antimicrobials for the treatment of persistent infections are finally highlighted.
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Affiliation(s)
- Foteini Gkartziou
- Institute of Chemical Engineering, FORTH/ICES, Platani, 26504 Patras, Greece;
| | - Nikolaos Giormezis
- National Reference Centre for Staphylococci, School of Medicine, University of Patras, 26504 Patras, Greece;
| | - Iris Spiliopoulou
- National Reference Centre for Staphylococci, School of Medicine, University of Patras, 26504 Patras, Greece;
- Department of Microbiology, School of Medicine, University of Patras, 26504 Patras, Greece
- Correspondence: (I.S.); (S.G.A.)
| | - Sophia G. Antimisiaris
- Institute of Chemical Engineering, FORTH/ICES, Platani, 26504 Patras, Greece;
- Laboratory of Pharmaceutical Technology, Department of Pharmacy, University of Patras, 26504 Patras, Greece
- Correspondence: (I.S.); (S.G.A.)
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22
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Alatorre-Barajas JA, Alcántar-Zavala E, Gil-Rivas MG, Estrada-Zavala E, Ochoa-Terán A, Gochi-Ponce Y, Montes-Ávila J, Cabrera A, Trujillo-Navarrete B, Rivera-Lugo YY, Alonso-Núñez G, Reynoso-Soto EA, Medina-Franco JL. Synthesis of covalent bonding MWCNT-oligoethylene linezolid conjugates and their antibacterial activity against bacterial strains. RSC Adv 2021; 11:28912-28924. [PMID: 35478546 PMCID: PMC9038137 DOI: 10.1039/d1ra04691h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 08/24/2021] [Indexed: 01/18/2023] Open
Abstract
Nowadays, infectious diseases caused by drug-resistant bacteria have become especially important. Linezolid is an antibacterial drug active against clinically important Gram positive strains; however, resistance showed by these bacteria has been reported. Nanotechnology has improved a broad area of science, such as medicine, developing new drug delivery and transport systems. In this work, several covalently bounded conjugated nanomaterials were synthesized from multiwalled carbon nanotubes (MWCNTs), a different length oligoethylene chain (Sn), and two linezolid precursors (4 and 7), and they were evaluated in antibacterial assays. Interestingly, due to the intrinsic antibacterial activity of the amino-oligoethylene linezolid analogues, these conjugated nanomaterials showed significant antibacterial activity against various tested bacterial strains in a radial diffusion assay and microdilution method, including Gram negative strains as Escherichia coli (11 mm, 6.25 μg mL−1) and Salmonella typhi (14 mm, ≤0.78 μg mL−1), which are not inhibited by linezolid. The results show a significant effect of the oligoethylene chain length over the antibacterial activity. Molecular docking of amino-oligoethylene linezolid analogs shows a more favorable interaction of the S2-7 analog in the PTC of E. coli. New MWCNTs amino-oligoethylene linezolid conjugates having outstanding activity against Gram negative strains.![]()
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Affiliation(s)
- José A. Alatorre-Barajas
- Centro de Graduados e Investigación en Química, Tecnológico Nacional de México/ IT de Tijuana, Tijuana, B. C., Mexico
| | - Eleazar Alcántar-Zavala
- Centro de Graduados e Investigación en Química, Tecnológico Nacional de México/ IT de Tijuana, Tijuana, B. C., Mexico
| | - M. Graciela Gil-Rivas
- Centro de Graduados e Investigación en Química, Tecnológico Nacional de México/ IT de Tijuana, Tijuana, B. C., Mexico
| | - Edgar Estrada-Zavala
- Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa, Culiacán, Sin, Mexico
| | - Adrián Ochoa-Terán
- Centro de Graduados e Investigación en Química, Tecnológico Nacional de México/ IT de Tijuana, Tijuana, B. C., Mexico
| | - Y. Gochi-Ponce
- Centro de Graduados e Investigación en Química, Tecnológico Nacional de México/ IT de Tijuana, Tijuana, B. C., Mexico
| | - Julio Montes-Ávila
- Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa, Culiacán, Sin, Mexico
| | - Alberto Cabrera
- Centro de Graduados e Investigación en Química, Tecnológico Nacional de México/ IT de Tijuana, Tijuana, B. C., Mexico
| | - Balter Trujillo-Navarrete
- Centro de Graduados e Investigación en Química, Tecnológico Nacional de México/ IT de Tijuana, Tijuana, B. C., Mexico
| | - Yazmin Yorely Rivera-Lugo
- Centro de Graduados e Investigación en Química, Tecnológico Nacional de México/ IT de Tijuana, Tijuana, B. C., Mexico
| | - Gabriel Alonso-Núñez
- Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Ensenada, B. C, Mexico
| | - Edgar A. Reynoso-Soto
- Centro de Graduados e Investigación en Química, Tecnológico Nacional de México/ IT de Tijuana, Tijuana, B. C., Mexico
| | - J. L. Medina-Franco
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
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Hadi J, Wu S, Brightwell G. Antimicrobial Blue Light versus Pathogenic Bacteria: Mechanism, Application in the Food Industry, Hurdle Technologies and Potential Resistance. Foods 2020; 9:E1895. [PMID: 33353056 PMCID: PMC7767196 DOI: 10.3390/foods9121895] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 12/12/2020] [Accepted: 12/16/2020] [Indexed: 12/12/2022] Open
Abstract
Blue light primarily exhibits antimicrobial activity through the activation of endogenous photosensitizers, which leads to the formation of reactive oxygen species that attack components of bacterial cells. Current data show that blue light is innocuous on the skin, but may inflict photo-damage to the eyes. Laboratory measurements indicate that antimicrobial blue light has minimal effects on the sensorial and nutritional properties of foods, although future research using human panels is required to ascertain these findings. Food properties also affect the efficacy of antimicrobial blue light, with attenuation or enhancement of the bactericidal activity observed in the presence of absorptive materials (for example, proteins on meats) or photosensitizers (for example, riboflavin in milk), respectively. Blue light can also be coupled with other treatments, such as polyphenols, essential oils and organic acids. While complete resistance to blue light has not been reported, isolated evidence suggests that bacterial tolerance to blue light may occur over time, especially through gene mutations, although at a slower rate than antibiotic resistance. Future studies can aim at characterizing the amount and type of intracellular photosensitizers across bacterial species and at assessing the oxygen-independent mechanism of blue light-for example, the inactivation of spoilage bacteria in vacuum-packed meats.
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Affiliation(s)
- Joshua Hadi
- AgResearch Ltd., Hopkirk Research Institute, Cnr University and Library Road, Massey University, Palmerston North 4442, New Zealand; (J.H.); (S.W.)
| | - Shuyan Wu
- AgResearch Ltd., Hopkirk Research Institute, Cnr University and Library Road, Massey University, Palmerston North 4442, New Zealand; (J.H.); (S.W.)
| | - Gale Brightwell
- AgResearch Ltd., Hopkirk Research Institute, Cnr University and Library Road, Massey University, Palmerston North 4442, New Zealand; (J.H.); (S.W.)
- New Zealand Food Safety Science and Research Centre, Tennent Drive, Massey University, Palmerston North 4474, New Zealand
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Cobb LH, McCabe EM, Priddy LB. Therapeutics and delivery vehicles for local treatment of osteomyelitis. J Orthop Res 2020; 38:2091-2103. [PMID: 32285973 PMCID: PMC8117475 DOI: 10.1002/jor.24689] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 04/07/2020] [Accepted: 04/11/2020] [Indexed: 02/04/2023]
Abstract
Osteomyelitis, or the infection of the bone, presents a major complication in orthopedics and may lead to prolonged hospital visits, implant failure, and in more extreme cases, amputation of affected limbs. Typical treatment for this disease involves surgical debridement followed by long-term, systemic antibiotic administration, which contributes to the development of antibiotic-resistant bacteria and has limited ability to eradicate challenging biofilm-forming pathogens including Staphylococcus aureus-the most common cause of osteomyelitis. Local delivery of high doses of antibiotics via traditional bone cement can reduce systemic side effects of an antibiotic. Nonetheless, growing concerns over burst release (then subtherapeutic dose) of antibiotics, along with microbial colonization of the nondegradable cement biomaterial, further exacerbate antibiotic resistance and highlight the need to engineer alternative antimicrobial therapeutics and local delivery vehicles with increased efficacy against, in particular, biofilm-forming, antibiotic-resistant bacteria. Furthermore, limited guidance exists regarding both standardized formulation protocols and validated assays to predict efficacy of a therapeutic against multiple strains of bacteria. Ideally, antimicrobial strategies would be highly specific while exhibiting a broad spectrum of bactericidal activity. With a focus on S. aureus infection, this review addresses the efficacy of novel therapeutics and local delivery vehicles, as alternatives to the traditional antibiotic regimens. The aim of this review is to discuss these components with regards to long bone osteomyelitis and to encourage positive directions for future research efforts.
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Affiliation(s)
- Leah H. Cobb
- Department of Agricultural and Biological Engineering, Mississippi State University, Mississippi State, MS, USA
| | - Emily M. McCabe
- Department of Agricultural and Biological Engineering, Mississippi State University, Mississippi State, MS, USA,Department of Mechanical Engineering, Mississippi State University, Mississippi State, MS, USA
| | - Lauren B. Priddy
- Department of Agricultural and Biological Engineering, Mississippi State University, Mississippi State, MS, USA,corresponding author: Contact: , (662) 325-5988, Department of Agricultural and Biological Engineering, Mississippi State University, 130 Creelman Street, Mississippi State, MS, USA 39762
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Enhancement of Contact Lens Disinfection by Combining Disinfectant with Visible Light Irradiation. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17176422. [PMID: 32899295 PMCID: PMC7504152 DOI: 10.3390/ijerph17176422] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/28/2020] [Accepted: 08/29/2020] [Indexed: 01/05/2023]
Abstract
Multiple use contact lenses have to be disinfected overnight to reduce the risk of infections. However, several studies demonstrated that not only microorganisms are affected by the disinfectants, but also ocular epithelial cells, which come into contact via residuals at reinsertion of the lens. Visible light has been demonstrated to achieve an inactivation effect on several bacterial and fungal species. Combinations with other disinfection methods often showed better results compared to separately applied methods. We therefore investigated contact lens disinfection solutions combined with 405 nm irradiation, with the intention to reduce the disinfectant concentration of ReNu Multiplus, OptiFree Express or AOSept while maintaining adequate disinfection results due to combination benefits. Pseudomonads, staphylococci and E. coli were studied with disk diffusion assay, colony forming unit (cfu) determination and growth delay. A log reduction of 4.49 was achieved for P. fluorescens in 2 h for 40% ReNu Multiplus combined with an irradiation intensity of 20 mW/cm2 at 405 nm. For AOSept the combination effect was so strong that 5% of AOSept in combination with light exhibited the same result as 100% AOSept alone. Combination of disinfectants with visible violet light is therefore considered a promising approach, as a reduction of potentially toxic ingredients can be achieved.
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Xiao F, Cao B, Wen L, Su Y, Zhan M, Lu L, Hu X. Photosensitizer conjugate-functionalized poly(hexamethylene guanidine) for potentiated broad-spectrum bacterial inhibition and enhanced biocompatibility. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2020.06.038] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Enhanced antimicrobial efficacy of biosynthesized silver nanoparticle based antibiotic conjugates. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2020.107978] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Yaqoob SB, Adnan R, Rameez Khan RM, Rashid M. Gold, Silver, and Palladium Nanoparticles: A Chemical Tool for Biomedical Applications. Front Chem 2020; 8:376. [PMID: 32582621 PMCID: PMC7283583 DOI: 10.3389/fchem.2020.00376] [Citation(s) in RCA: 113] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Accepted: 04/09/2020] [Indexed: 12/15/2022] Open
Abstract
Herein, the role of metal-based nanoparticles (NPs) in biomedical analysis and the treatment of critical deceases been highlighted. In the world of nanotechnology, noble elements such as the gold/silver/palladium (Au/Ag/Pd) NPs are the most promising emerging trend to design bioengineering materials that could to be employed as modern diagnostic tools and devices to combat serious diseases. NPs are considered a powerful and advanced chemical tool to diagnose and to cure critical ailments such as HIV, cancer, and other types of infectious illnesses. The treatment of cancer is the most significant application of nanotechnology which is based on premature tumor detection and analysis of cancer cells through Nano-devices. The fascinating characteristic properties of NPs-such as high surface area, high surface Plasmon resonance, multi-functionalization, highly stable nature, and easy processing-make them more prolific for nanotechnology. In this review article, the multifunctional roles of Au/Ag/Pd NPs in the field of medical science, the physicochemical toxicity dependent properties, and the interaction mechanism is highlighted. Due to the cytotoxicity of Ag/Au/Pd NPs, the conclusion and future remarks emphasize the need for further research to minimize the toxicity of NPs in the bio-medicinal field.
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Affiliation(s)
- Sundas Bahar Yaqoob
- Department of Zoology, Mirpur University of Science and Technology Mirpur, Mirpur, Pakistan
| | - Rohana Adnan
- School of Chemical Sciences, Universiti Sains Malaysia, Penang, Malaysia
| | | | - Mohammad Rashid
- School of Chemical Sciences, Universiti Sains Malaysia, Penang, Malaysia
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Mohamed MSM, Mostafa HM, Mohamed SH, Abd El-Moez SI, Kamel Z. Combination of Silver Nanoparticles and Vancomycin to Overcome Antibiotic Resistance in Planktonic/Biofilm Cell from Clinical and Animal Source. Microb Drug Resist 2020; 26:1410-1420. [PMID: 32354252 DOI: 10.1089/mdr.2020.0089] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
This study aims to evaluate the prevalence of multidrug-resistant (MDR) and biofilm-forming pathogens from animal source compared to clinical ones. In addition, to assess the antibacterial and antibiofilm activity of silver nanoparticles (AgNPs) alone and/or mixed with vancomycin. Out of 62 bacterial isolates from animal respiratory tract infection (RTI), 50.00% were defined as MDR, while among human ones, 44.00% were MDR. The bacteria Staphylococcus aureus, Pseudomonas aeruginosa, and Streptococcus pneumoniae were the predominant isolated bacteria from both animal and human origin with frequency percentage of 50.00, 22.32, and 18.75, respectively. Among Staph. aureus strains, mecA gene was detected in 60.00% and 61.54% of animal and human isolates, respectively, while mecALGA251 (mecC) gene was detected in 13.33% and 15.38% of animal and human isolates, respectively. Biofilm formation ability among animal isolates was 83.87%, while among human ones was 86.00%. AgNPs were effective in inhibiting planktonic cells with minimal inhibitory concentration (MIC) values (0.625-10 μg/mL), as well as eradicating biofilm with minimal biofilm eradication concentration values (1.25-10 μg/mL). Noticeable low MIC of AgNPs was required for the isolates from animal source (0.625-5 μg/mL) compared to clinical ones (0.625-10 μg/mL). Remarkable reduction in AgNP effective concentration was observed after combination with 1/4 MIC of vancomycin with minimum recorded concentration of 0.08 μg/mL. In conclusion, the prevalence of MDR among RT pathogens was recorded with high ability to produce biofilm and virulence factors from both animal and human pathogens. AgNPs showed strong antibacterial and antibiofilm activity alone and mixed with vancomycin, with up to fourfold reduction of AgNP inhibitory dose.
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Affiliation(s)
- Mahmoud S M Mohamed
- Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza, Egypt
| | - Heba M Mostafa
- Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza, Egypt
| | - Sara H Mohamed
- Department of Microbiology, National Organization for Drug Control and Research, Giza, Egypt
| | - Sherein I Abd El-Moez
- Department of Microbiology and Immunology, Veterinary Research Division, National Research Center, Dokki, Giza, Egypt
| | - Zeinat Kamel
- Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza, Egypt
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Mei L, Wang Q. Advances in Using Nanotechnology Structuring Approaches for Improving Food Packaging. Annu Rev Food Sci Technol 2020; 11:339-364. [PMID: 31905018 DOI: 10.1146/annurev-food-032519-051804] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Recent advances in food packaging materials largely rely on nanotechnology structuring. Owing to several unique properties of nanostructures that are lacking in their bulk forms, the incorporation of nanostructures into packaging materials has greatly improved the performance and enriched the functionalities of these materials. This review focuses on the functions and applications of widely studied nanostructures for developing novel food packaging materials. Nanostructures that offer antimicrobial activity, enhance mechanical and barrier properties, and monitor food product freshness are discussed and compared. Furthermore, the safety and potential toxicity of nanostructures in food products are evaluated by summarizing the migration activity of nanostructures to different food systems and discussing the metabolism of nanostructures at the cellular level and in animal models.
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Affiliation(s)
- Lei Mei
- Department of Nutrition and Food Science, College of Agriculture and Natural Resources, University of Maryland, College Park, Maryland 20740, USA;
| | - Qin Wang
- Department of Nutrition and Food Science, College of Agriculture and Natural Resources, University of Maryland, College Park, Maryland 20740, USA;
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Aderibigbe B, Mbese Z, Peteni S, Fonkui YT, Fotsing MC, Ray SS, Ndinteh DT. Carbopol-mastic gum/silver nanoparticle-based topical gels. Pharmacogn Mag 2020. [DOI: 10.4103/pm.pm_76_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Wang S, Gao Y, Jin Q, Ji J. Emerging antibacterial nanomedicine for enhanced antibiotic therapy. Biomater Sci 2020; 8:6825-6839. [DOI: 10.1039/d0bm00974a] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
This review highlights the different mechanisms of current nano-antibiotic systems for combatting serious antibiotic resistance of bacteria.
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Affiliation(s)
- Shuting Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Yifan Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Qiao Jin
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Jian Ji
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
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Rice KM, Ginjupalli GK, Manne NDPK, Jones CB, Blough ER. A review of the antimicrobial potential of precious metal derived nanoparticle constructs. NANOTECHNOLOGY 2019; 30:372001. [PMID: 30840941 DOI: 10.1088/1361-6528/ab0d38] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The field of nanotechnology is rapidly growing. The promise of pharmacotherapeutics emerging from this vast field has drawn the attention of many researchers. However, with the increase in the prevalence of antibiotic resistant microorganisms, the manifestations of these promises are needed now more than ever. Many have postulated the antimicrobial potential of nanoparticle constructs derived from precious metals/noble metals nanoparticles (NMNPs), such as silver nanoparticles that show activity against multidrug resistant bacteria. In this review we will evaluate the current studies and explore the data to obtain a clear picture of the potential of these particles and the validity of the claims of drug resistant treatments with NMNPs.
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Affiliation(s)
- Kevin M Rice
- Center for Diagnostic Nanosystems, Marshall University, Huntington, WV, United States of America. Department of Internal Medicine, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV, United States of America. Biotechnology Graduate Program West Virginia State University, Institute, WV, United States of America. Department of Health and Human Service, School of Kinesiology, Marshall University, Huntington, WV, United States of America
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Jiang Q, Chen J, Yang C, Yin Y, Yao K. Quorum Sensing: A Prospective Therapeutic Target for Bacterial Diseases. BIOMED RESEARCH INTERNATIONAL 2019; 2019:2015978. [PMID: 31080810 PMCID: PMC6475571 DOI: 10.1155/2019/2015978] [Citation(s) in RCA: 144] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 03/20/2019] [Indexed: 01/07/2023]
Abstract
Bacterial quorum sensing (QS) is a cell-to-cell communication in which specific signals are activated to coordinate pathogenic behaviors and help bacteria acclimatize to the disadvantages. The QS signals in the bacteria mainly consist of acyl-homoserine lactone, autoinducing peptide, and autoinducer-2. QS signaling activation and biofilm formation lead to the antimicrobial resistance of the pathogens, thus increasing the therapy difficulty of bacterial diseases. Anti-QS agents can abolish the QS signaling and prevent the biofilm formation, therefore reducing bacterial virulence without causing drug-resistant to the pathogens, suggesting that anti-QS agents are potential alternatives for antibiotics. This review focuses on the anti-QS agents and their mediated signals in the pathogens and conveys the potential of QS targeted therapy for bacterial diseases.
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Affiliation(s)
- Qian Jiang
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Institute of Subtropical Agriculture, Chinese Academy of Sciences, China
- University of Chinese Academy of Sciences, Beijing 100043, China
- Department of Animal Science, University of Manitoba, Winnipeg, MB, Canada R3T 2N2
| | - Jiashun Chen
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Institute of Subtropical Agriculture, Chinese Academy of Sciences, China
| | - Chengbo Yang
- Department of Animal Science, University of Manitoba, Winnipeg, MB, Canada R3T 2N2
| | - Yulong Yin
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Institute of Subtropical Agriculture, Chinese Academy of Sciences, China
| | - Kang Yao
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Institute of Subtropical Agriculture, Chinese Academy of Sciences, China
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Hecel A, Kolkowska P, Krzywoszynska K, Szebesczyk A, Rowinska-Zyrek M, Kozlowski H. Ag+ Complexes as Potential Therapeutic Agents in Medicine and Pharmacy. Curr Med Chem 2019; 26:624-647. [DOI: 10.2174/0929867324666170920125943] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 07/28/2017] [Accepted: 08/09/2017] [Indexed: 12/17/2022]
Abstract
Silver is a non-essential element with promising antimicrobial and anticancer properties. This work is a detailed summary of the newest findings on the bioinorganic chemistry of silver, with a special focus on the applications of Ag+ complexes and nanoparticles. The coordination chemistry of silver is given a reasonable amount of attention, summarizing the most common silver binding sites and giving examples of such binding motifs in biologically important proteins. Possible applications of this metal and its complexes in medicine, particularly as antibacterial and antifungal agents and in cancer therapy, are discussed in detail. The most recent data on silver nanoparticles are also summarized.
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Affiliation(s)
- Aleksandra Hecel
- Faculty of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50383 Wroclaw, Poland
| | - Paulina Kolkowska
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, via A. Moro 2, 53100 Siena, Italy
| | - Karolina Krzywoszynska
- Institute of Cosmetology, Public Higher Medical Professional School in Opole, Katowicka 68, 45060 Opole, Poland
| | - Agnieszka Szebesczyk
- Institute of Cosmetology, Public Higher Medical Professional School in Opole, Katowicka 68, 45060 Opole, Poland
| | | | - Henryk Kozlowski
- Institute of Cosmetology, Public Higher Medical Professional School in Opole, Katowicka 68, 45060 Opole, Poland
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Mulani MS, Kamble EE, Kumkar SN, Tawre MS, Pardesi KR. Emerging Strategies to Combat ESKAPE Pathogens in the Era of Antimicrobial Resistance: A Review. Front Microbiol 2019; 10:539. [PMID: 30988669 PMCID: PMC6452778 DOI: 10.3389/fmicb.2019.00539] [Citation(s) in RCA: 821] [Impact Index Per Article: 164.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 03/01/2019] [Indexed: 12/19/2022] Open
Abstract
The acronym ESKAPE includes six nosocomial pathogens that exhibit multidrug resistance and virulence: Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter spp. Persistent use of antibiotics has provoked the emergence of multidrug resistant (MDR) and extensively drug resistant (XDR) bacteria, which render even the most effective drugs ineffective. Extended spectrum β-lactamase (ESBL) and carbapenemase producing Gram negative bacteria have emerged as an important therapeutic challenge. Development of novel therapeutics to treat drug resistant infections, especially those caused by ESKAPE pathogens is the need of the hour. Alternative therapies such as use of antibiotics in combination or with adjuvants, bacteriophages, antimicrobial peptides, nanoparticles, and photodynamic light therapy are widely reported. Many reviews published till date describe these therapies with respect to the various agents used, their dosage details and mechanism of action against MDR pathogens but very few have focused specifically on ESKAPE. The objective of this review is to describe the alternative therapies reported to treat ESKAPE infections, their advantages and limitations, potential application in vivo, and status in clinical trials. The review further highlights the importance of a combinatorial approach, wherein two or more therapies are used in combination in order to overcome their individual limitations, additional studies on which are warranted, before translating them into clinical practice. These advances could possibly give an alternate solution or extend the lifetime of current antimicrobials.
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Affiliation(s)
- Mansura S Mulani
- Department of Microbiology, Savitribai Phule Pune University, Pune, India
| | - Ekta E Kamble
- Department of Microbiology, Savitribai Phule Pune University, Pune, India
| | - Shital N Kumkar
- Department of Microbiology, Savitribai Phule Pune University, Pune, India
| | - Madhumita S Tawre
- Department of Microbiology, Savitribai Phule Pune University, Pune, India
| | - Karishma R Pardesi
- Department of Microbiology, Savitribai Phule Pune University, Pune, India
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Lomelí-Marroquín D, Medina Cruz D, Nieto-Argüello A, Vernet Crua A, Chen J, Torres-Castro A, Webster TJ, Cholula-Díaz JL. Starch-mediated synthesis of mono- and bimetallic silver/gold nanoparticles as antimicrobial and anticancer agents. Int J Nanomedicine 2019; 14:2171-2190. [PMID: 30988615 PMCID: PMC6443225 DOI: 10.2147/ijn.s192757] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND AND AIM Bimetallic silver/gold nanosystems are expected to significantly improve therapeutic efficacy compared to their monometallic counterparts by maintaining the general biocompatibility of gold nanoparticles (AuNPs) while, at the same time, decreasing the relatively high toxicity of silver nanoparticles (AgNPs) toward healthy human cells. Thus, the aim of this research was to establish a highly reproducible one-pot green synthesis of colloidal AuNPs and bimetallic Ag/Au alloy nanoparticles (NPs; Ag/AuNPs) using starch as reducing and capping agent. METHODS The optical properties, high reproducibility, stability and particle size distribution of the colloidal NPs were analyzed by ultraviolet (UV)-visible spectroscopy, dynamic light scattering (DLS) and ζ-potential. The presence of starch as capping agent was determined by Fourier transform infrared (FT-IR) spectroscopy. The structural properties were studied by X-ray diffraction (XRD). Transmission electron microscopy (TEM) imaging was done to determine the morphology and size of the nanostructures. The chemical composition of the nanomaterials was determined by energy-dispersive X-ray spectroscopy (EDS) and inductively coupled plasma mass spectrometry (ICP-MS) analysis. To further study the biomedical applications of the synthesized nanostructures, antibacterial studies against multidrug-resistant (MDR) Escherichia coli and methicillin-resistant Staphylococcus aureus (MRSA) were conducted. In addition, the NPs were added to the growth media of human dermal fibroblast (HDF) and human melanoma cells to show their cytocompatibility and cytotoxicity, respectively, over a 3-day experiment. RESULTS UV-visible spectroscopy confirmed the highly reproducible green synthesis of colloidal AuNPs and Ag/AuNPs. The NPs showed a face-centered cubic crystal structure and an icosahedral shape with mean particle sizes of 28.5 and 9.7 nm for AuNPs and Ag/AuNPs, respectively. The antibacterial studies of the NPs against antibiotic-resistant bacterial strains presented a dose-dependent antimicrobial behavior. Furthermore, the NPs showed cytocompat-ibility towards HDF, but a dose-dependent anticancer effect was found when human melanoma cells were grown in presence of different NP concentrations for 72 hours. CONCLUSION In this study, mono- and bimetallic NPs were synthesized for the first time using a highly reproducible, environmentally friendly, cost-effective and quick method and were successfully characterized and tested for several anti-infection and anticancer biomedical applications.
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Affiliation(s)
- Diana Lomelí-Marroquín
- School of Engineering and Sciences, Tecnologico de Monterrey, Monterrey, NL 64849, Mexico,
| | - David Medina Cruz
- Department of Chemical Engineering, Northeastern University, Boston, MA 02115,USA
- Nanomedicine Science and Technology Center, Northeastern University, Boston, MA 02115,USA
| | - Alfonso Nieto-Argüello
- School of Engineering and Sciences, Tecnologico de Monterrey, Monterrey, NL 64849, Mexico,
| | - Ada Vernet Crua
- Department of Chemical Engineering, Northeastern University, Boston, MA 02115,USA
- Nanomedicine Science and Technology Center, Northeastern University, Boston, MA 02115,USA
| | - Junjiang Chen
- Department of Chemical Engineering, Northeastern University, Boston, MA 02115,USA
- Nanomedicine Science and Technology Center, Northeastern University, Boston, MA 02115,USA
| | - Alejandro Torres-Castro
- Faculty School of Mechanical and Electrical Engineering (FIME), Autonomous University of Nuevo Leon (UANL), San Nicolás de los Garza, NL 66451, Mexico
| | - Thomas J Webster
- Department of Chemical Engineering, Northeastern University, Boston, MA 02115,USA
- Nanomedicine Science and Technology Center, Northeastern University, Boston, MA 02115,USA
| | - Jorge L Cholula-Díaz
- School of Engineering and Sciences, Tecnologico de Monterrey, Monterrey, NL 64849, Mexico,
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Dalvand LF, Hosseini F, Dehaghi SM, Torbati ES. Inhibitory Effect of Bismuth Oxide Nanoparticles Produced by Bacillus licheniformis on Methicillin-Resistant Staphylococcus aureus Strains (MRSA). IRANIAN JOURNAL OF BIOTECHNOLOGY 2018; 16:e2102. [PMID: 31457035 PMCID: PMC6697830 DOI: 10.21859/ijb.2102] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 07/17/2018] [Accepted: 07/31/2018] [Indexed: 12/13/2022]
Abstract
Background Based on the increase in antibiotic-resistant pathogens, it is necessary to have various effective compounds, so as to prevent its proliferation of these pathogens. For this purpose, nano-materials such as bismuth oxide nanoparticles can be used. Objectives The aim of this study was to produce bismuth oxide nanoparticles by Bacillus licheniformis PTCC1320 and to determine the antimicrobial effects on methicillin-resistant Staphylococcus aureus species compared with some antibiotics. Materials and Methods In this study, 200 bacterial samples were collected from hospitalized patients with burn infections from the Burn Rescue Hospital, Tehran. Thereafter, 65 strains of methicillin-resistant Staphylococcus aureus were identified by their phenotype and genotype. A total of 92% of identified strains with the highest resistance to antibiotics were isolated. Bismuth oxide nanoparticles were synthesized by Bacillus licheniformis PTCC1320. FTIR spectroscopy, X-ray diffraction, and scanning electron microscopy (SEM) were used to analyze the extracellularly produced nanoparticles. Finally, the antibacterial properties of nanoparticles produced on the biofilm of some pathogens were examined. Results In the present study, cube-shaped bismuth oxide nanoparticles were formed in the size range of 29-62 nm. They were found to have antimicrobial activity on 16% of the isolated Staphylococcus aureus strains. The FTIR results showed the vibrational frequencies of bismuth oxide at 583, 680, 737, and 1630 nm. The XRD results also confirmed the structure of nanoparticles. Compared with antibiotics such as Ciprofloxacin, bismuth oxide nanoparticles had less affectivity on this resistant hospital pathogen. Increasing the concentration of bismuth oxide nanoparticles, increased its antimicrobial effect and decreased bacterial growth rate. Conclusion Compared with heavy metals, bismuth nanoparticles have very low antibacterial effects. Considering this feature, the use of less antibiotics can be achieved with bismuth nanoparticles in the treatment of infections, thereby reducing antibiotic resistance.
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Affiliation(s)
- Leila Firouzi Dalvand
- Department of Microbiology, North Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Farzaneh Hosseini
- Department of Microbiology, North Tehran Branch, Islamic Azad University, Tehran, Iran
| | | | - Elham Siasi Torbati
- Department of Microbiology, North Tehran Branch, Islamic Azad University, Tehran, Iran
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Silver bullets: A new lustre on an old antimicrobial agent. Biotechnol Adv 2018; 36:1391-1411. [PMID: 29847770 DOI: 10.1016/j.biotechadv.2018.05.004] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Revised: 04/26/2018] [Accepted: 05/21/2018] [Indexed: 01/19/2023]
Abstract
Silver was widely used in medicine to treat bacterial infections in the 19th and early 20th century, up until the discovery and development of the first modern antibiotics in the 1940s, which were markedly more effective. Since then, every new antibiotic introduced to the clinic has led to an associated development of drug resistance. Today, the threat of extensive bacterial resistance to antibiotics has reignited interest in alternative strategies to treat infectious diseases, with silver regaining well-deserved renewed attention. Silver ions are highly disruptive to bacterial integrity and biochemical function, with comparatively minimal toxicity to mammalian cells. This review focuses on the antimicrobial properties of silver and their use in synergistic combination therapy with traditional antibiotic drugs.
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Hibbitts A, O'Leary C. Emerging Nanomedicine Therapies to Counter the Rise of Methicillin-Resistant Staphylococcus aureus. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E321. [PMID: 29473883 PMCID: PMC5849018 DOI: 10.3390/ma11020321] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 02/14/2018] [Accepted: 02/19/2018] [Indexed: 12/25/2022]
Abstract
In a recent report, the World Health Organisation (WHO) classified antibiotic resistance as one of the greatest threats to global health, food security, and development. Methicillin-resistant Staphylococcus aureus (MRSA) remains at the core of this threat, with persistent and resilient strains detectable in up to 90% of S. aureus infections. Unfortunately, there is a lack of novel antibiotics reaching the clinic to address the significant morbidity and mortality that MRSA is responsible for. Recently, nanomedicine strategies have emerged as a promising therapy to combat the rise of MRSA. However, these approaches have been wide-ranging in design, with few attempts to compare studies across scientific and clinical disciplines. This review seeks to reconcile this discrepancy in the literature, with specific focus on the mechanisms of MRSA infection and how they can be exploited by bioactive molecules that are delivered by nanomedicines, in addition to utilisation of the nanomaterials themselves as antibacterial agents. Finally, we discuss targeting MRSA biofilms using nano-patterning technologies and comment on future opportunities and challenges for MRSA treatment using nanomedicine.
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Affiliation(s)
- Alan Hibbitts
- Tissue Engineering Research Group, Department of Anatomy, Royal College of Surgeons in Ireland, 123 St. Stephen's Green, Dublin 2, Ireland.
- Trinity Centre of Bioengineering, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland.
- Advanced Materials and Bioengineering Research (AMBER) Centre, Royal College of Surgeons in Ireland and Trinity College Dublin, Dublin 2, Ireland.
| | - Cian O'Leary
- Tissue Engineering Research Group, Department of Anatomy, Royal College of Surgeons in Ireland, 123 St. Stephen's Green, Dublin 2, Ireland.
- Trinity Centre of Bioengineering, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland.
- Advanced Materials and Bioengineering Research (AMBER) Centre, Royal College of Surgeons in Ireland and Trinity College Dublin, Dublin 2, Ireland.
- School of Pharmacy, Royal College of Surgeons in Ireland, 123 St. Stephen's Green, Dublin 2, Ireland.
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Abstract
Despite an array of cogent antibiotics, bacterial infections, notably those produced by nosocomial pathogens, still remain a leading factor of morbidity and mortality around the globe. They target the severely ill, hospitalized and immunocompromised patients with incapacitated immune system, who are prone to infections. The choice of antimicrobial therapy is largely empirical and not devoid of toxicity, hypersensitivity, teratogenicity and/or mutagenicity. The emergence of multidrug-resistant bacteria further intensifies the clinical predicament as it directly impacts public health due to diminished potency of current antibiotics. In addition, there is an escalating concern with respect to biofilm-associated infections that are refractory to the presently available antimicrobial armory, leaving almost no therapeutic option. Hence, there is a dire need to develop alternate antibacterial agents. The past decade has witnessed a substantial upsurge in the global use of nanomedicines as innovative tools for combating the high rates of antimicrobial resistance. Antibacterial activity of metal and metal oxide nanoparticles (NPs) has been extensively reported. The microbes are eliminated either by microbicidal effects of the NPs, such as release of free metal ions culminating in cell membrane damage, DNA interactions or free radical generation, or by microbiostatic effects coupled with killing potentiated by the host's immune system. This review encompasses the magnitude of multidrug resistance in nosocomial infections, bacterial evasion of the host immune system, mechanisms used by bacteria to develop drug resistance and the use of nanomaterials based on metals to overcome these challenges. The diverse annihilative effects of conventional and biogenic metal NPs for antibacterial activity are also discussed. The use of polymer-based nanomaterials and nanocomposites, alone or functionalized with ligands, antibodies or antibiotics, as alternative antimicrobial agents for treating severe bacterial infections is also discussed. Combinatorial therapy with metallic NPs, as adjunct to the existing antibiotics, may aid to restrain the mounting menace of bacterial resistance and nosocomial threat.
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Affiliation(s)
- Hassan A Hemeg
- Department of Medical Laboratories Technology, Faculty of Applied Medical Sciences, Taibah University, Medina, Kingdom of Saudi Arabia
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Potentiation of Tobramycin by Silver Nanoparticles against Pseudomonas aeruginosa Biofilms. Antimicrob Agents Chemother 2017; 61:AAC.00415-17. [PMID: 28848007 DOI: 10.1128/aac.00415-17] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2017] [Accepted: 08/19/2017] [Indexed: 12/15/2022] Open
Abstract
Increasing antibiotic resistance among pathogenic bacterial species is a serious public health problem and has prompted research examining the antibacterial effects of alternative compounds and novel treatment strategies. Compounding this problem is the ability of many pathogenic bacteria to form biofilms during chronic infections. Importantly, these communities are often recalcitrant to antibiotic treatments that show effectiveness against acute infection. The antimicrobial properties of silver have been known for decades, but recently silver and silver-containing compounds have seen renewed interest as antimicrobial agents for treating bacterial infections. The goal of this study was to assess the ability of citrate-capped silver nanoparticles (AgNPs) of various sizes, alone and in combination with the aminoglycoside antibiotic tobramycin, to inhibit established Pseudomonas aeruginosa biofilms. Our results demonstrate that smaller 10-nm and 20-nm AgNPs were more effective at synergistically potentiating the activity of tobramycin. Visualization of biofilms treated with combinations of 10-nm AgNPs and tobramycin reveals that the synergistic bactericidal effect may be caused by disrupting cellular membranes. Minimum biofilm eradication concentration (MBEC) assays using clinical P. aeruginosa isolates shows that small AgNPs are more effective than larger AgNPs at inhibiting biofilms, but that the synergy effect is likely a strain-dependent phenomenon. These data suggest that small AgNPs synergistically potentiate the activity of tobramycin against P. aeruginosain vitro and may reveal a potential role for AgNP/antibiotic combinations in treating patients with chronic infections in a strain-specific manner.
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Wang Y, Wang Y, Wang Y, Murray CK, Hamblin MR, Hooper DC, Dai T. Antimicrobial blue light inactivation of pathogenic microbes: State of the art. Drug Resist Updat 2017; 33-35:1-22. [PMID: 29145971 DOI: 10.1016/j.drup.2017.10.002] [Citation(s) in RCA: 167] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 06/28/2017] [Accepted: 10/02/2017] [Indexed: 12/20/2022]
Abstract
As an innovative non-antibiotic approach, antimicrobial blue light in the spectrum of 400-470nm has demonstrated its intrinsic antimicrobial properties resulting from the presence of endogenous photosensitizing chromophores in pathogenic microbes and, subsequently, its promise as a counteracter of antibiotic resistance. Since we published our last review of antimicrobial blue light in 2012, there have been a substantial number of new studies reported in this area. Here we provide an updated overview of the findings from the new studies over the past 5 years, including the efficacy of antimicrobial blue light inactivation of different microbes, its mechanism of action, synergism of antimicrobial blue light with other angents, its effect on host cells and tissues, the potential development of resistance to antimicrobial blue light by microbes, and a novel interstitial delivery approach of antimicrobial blue light. The potential new applications of antimicrobial blue light are also discussed.
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Affiliation(s)
- Yucheng Wang
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA; Cancer Center, Aviation General Hospital, Beijing, China; Department of Medical Oncology, Beijing Institute of Translational Medicine, Chinese Academy of Sciences, Beijing, China
| | - Ying Wang
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA; Department of Laser Medicine, Chinese PLA General Hospital, Beijing, China
| | - Yuguang Wang
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA; Center of Digital Dentistry, School and Hospital of Stomatology, Peking University, Beijing, China
| | - Clinton K Murray
- Infectious Disease Service, San Antonio Military Medical Center, JBSA-Fort Sam Houston, TX, USA
| | - Michael R Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - David C Hooper
- Division of Infectious Diseases, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Tianhong Dai
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
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Aderibigbe BA. Metal-Based Nanoparticles for the Treatment of Infectious Diseases. Molecules 2017; 22:E1370. [PMID: 28820471 PMCID: PMC6152252 DOI: 10.3390/molecules22081370] [Citation(s) in RCA: 125] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 08/15/2017] [Indexed: 11/16/2022] Open
Abstract
Infectious diseases can be transmitted and they cause a significant burden on public health globally. They are the greatest world killers and it is estimated that they are responsible for the demise of over 17 million people annually. The impact of these diseases is greater in the developing countries. People with compromised immune systems and children are the most affected. Infectious diseases may be caused by bacteria, viruses, and protozoa. The treatment of infectious diseases is hampered by simultaneous resistance to multiple drugs, indicating that there is a serious and pressing need to develop new therapeutics that can overcome drug resistance. This review will focus on the recent reports of metal-based nanoparticles that are potential therapeutics for the treatment of infectious diseases and their biological efficacy (in vitro and in vivo).
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Affiliation(s)
- Blessing Atim Aderibigbe
- Department of Chemistry, University of Fort Hare, Alice Campus, Eastern Cape 5700, South Africa.
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Moura J, Freitas T, Cruz R, Pereira R, Silva A, Santos A, da Silva J, Luz-Lima C, Freire P, Coutinho H. β-Ag2MoO4 microcrystals: Characterization, antibacterial properties and modulation analysis of antibiotic activity. Biomed Pharmacother 2017; 86:242-247. [DOI: 10.1016/j.biopha.2016.12.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 12/06/2016] [Accepted: 12/07/2016] [Indexed: 10/20/2022] Open
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