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Bārzdiņa A, Plotniece A, Sobolev A, Pajuste K, Bandere D, Brangule A. From Polymeric Nanoformulations to Polyphenols-Strategies for Enhancing the Efficacy and Drug Delivery of Gentamicin. Antibiotics (Basel) 2024; 13:305. [PMID: 38666981 PMCID: PMC11047640 DOI: 10.3390/antibiotics13040305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 03/25/2024] [Accepted: 03/27/2024] [Indexed: 04/29/2024] Open
Abstract
Gentamicin is an essential broad-spectrum aminoglycoside antibiotic that is used in over 40 clinical conditions and has shown activity against a wide range of nosocomial, biofilm-forming, multi-drug resistant bacteria. Nevertheless, the low cellular penetration and serious side effects of gentamicin, as well as the fear of the development of antibacterial resistance, has led to a search for ways to circumvent these obstacles. This review provides an overview of the chemical and pharmacological properties of gentamicin and offers six different strategies (the isolation of specific types of gentamicin, encapsulation in polymeric nanoparticles, hydrophobization of the gentamicin molecule, and combinations of gentamicin with other antibiotics, polyphenols, and natural products) that aim to enhance the drug delivery and antibacterial activity of gentamicin. In addition, factors influencing the synthesis of gentamicin-loaded polymeric (poly (lactic-co-glycolic acid) (PLGA) and chitosan) nanoparticles and the methods used in drug release studies are discussed. Potential research directions and future perspectives for gentamicin-loaded drug delivery systems are given.
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Affiliation(s)
- Ance Bārzdiņa
- Department of Pharmaceutical Chemistry, Riga Stradins University, 21 Konsula Str., LV-1007 Riga, Latvia; (A.P.)
- Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, LV-1007 Riga, Latvia
| | - Aiva Plotniece
- Department of Pharmaceutical Chemistry, Riga Stradins University, 21 Konsula Str., LV-1007 Riga, Latvia; (A.P.)
- Latvian Institute of Organic Synthesis, 21 Aizkraukles Str., LV-1006 Riga, Latvia; (A.S.); (K.P.)
| | - Arkadij Sobolev
- Latvian Institute of Organic Synthesis, 21 Aizkraukles Str., LV-1006 Riga, Latvia; (A.S.); (K.P.)
| | - Karlis Pajuste
- Latvian Institute of Organic Synthesis, 21 Aizkraukles Str., LV-1006 Riga, Latvia; (A.S.); (K.P.)
| | - Dace Bandere
- Department of Pharmaceutical Chemistry, Riga Stradins University, 21 Konsula Str., LV-1007 Riga, Latvia; (A.P.)
- Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, LV-1007 Riga, Latvia
| | - Agnese Brangule
- Department of Pharmaceutical Chemistry, Riga Stradins University, 21 Konsula Str., LV-1007 Riga, Latvia; (A.P.)
- Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, LV-1007 Riga, Latvia
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Larissa P, Gambrill B, de Carvalho RDP, Picolo MZD, Cavalli V, Boaro LCC, Prokopovich P, Cogo-Müller K. Development, characterization and antimicrobial activity of multilayer silica nanoparticles with chlorhexidine incorporated into dental composites. Dent Mater 2023; 39:469-477. [PMID: 36934036 DOI: 10.1016/j.dental.2023.03.005] [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: 10/31/2022] [Revised: 02/12/2023] [Accepted: 03/03/2023] [Indexed: 03/18/2023]
Abstract
OBJECTIVE In this study a dentistry nanocomposite with prolonged antibacterial activity using silica nanoparticles (SNPs) loaded with chlorhexidine (CHX) was developed. METHODS SNPs were coated with the Layer-by-Layer technique. Dental composites were prepared with organic matrix of BisGMA/TEGDMA and SNPs with or without CHX (0, 10, 20 or 30% w/w). The physicochemical properties of the developed material were evaluated and agar diffusion method was used to test the antibacterial. In addition, the biofilm inhibitory activity of the composites was evaluated against S. mutans. RESULTS SNPs were rounded with diameters about 50 nm, the organic load increased with increasing deposited layers. Material samples with SNPs loaded with CHX (CHX-SNPs) showed the highest values of post-gel volumetric shrinkage, that ranged from 0.3% to 0.81%. Samples containing CHX-SNPs 30% w/w showed the highest values of flexural strength and modulus of elasticity. Only samples containing SNPs-CHX showed growth inhibition against S. mutans, S. mitis and S. gordonii in a concentration-dependent manner. The composites with CHX-SNPs reduced the biofilm formation of S. mutans biofilm at 24 h and 72 h. SIGNIFICANCE The nanoparticle studied acted as fillers and did not interfere with the evaluated physicochemical properties while providing antimicrobial activity against streptococci. Therefore, this initial study is a step forward to the synthesis of experimental composites with improved performance using CHX-SNPs.
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Affiliation(s)
- Pavanello Larissa
- Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | - Benjamin Gambrill
- School of Pharmacy and Pharmaceutical Science, Cardiff University, Cardiff, United Kingdom
| | | | | | - Vanessa Cavalli
- Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | | | - Polina Prokopovich
- School of Pharmacy and Pharmaceutical Science, Cardiff University, Cardiff, United Kingdom.
| | - Karina Cogo-Müller
- Faculty of Pharmaceutical Sciences, University of Campinas, Campinas, Brazil
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Bilyayeva O, Karol I, Demianenko E, Gaidai A, Kryzhevskyi Y, Vakuliuk P, Golub A. ORNIDAZOL-BASED APPLICATION SORBENT WITH NANO SILICA AND ITS ANTIMICROBIAL ACTIVITY. WIADOMOSCI LEKARSKIE (WARSAW, POLAND : 1960) 2023; 76:1347-1358. [PMID: 37463367 DOI: 10.36740/wlek202306104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
OBJECTIVE The aim: To investigate the effect of application sorbent based on ornidazole with nanosilicon in experiment and clinic. PATIENTS AND METHODS Materials and methods: In order to study the effectiveness of the Ornidasil application sorbent for the treatment of purulent wounds, we conducted an experimental study in rats. Also, we studied the effectiveness of the Ornidasil in the clinic for the treatment of patients with diabetic foot syndrome and to prevent the suppuration of postoperative wounds in patients with purulent peritonitis in toxic and terminal stages. RESULTS Results: The formation of active substance complexes with hydroxylated matrices is due to hydrogen bonds between the oxygen atom of the silanol group of the silica surface and the hydrogen atom of the alcohol group of the ornidazole molecule. This promotes the gradual release of ornidazole from the surface of such a matrix into the wound exudate. Thus, on day 13, 9 experimental rats of group I healed completely, 11 rats had a small wound surface, complete healing occurred on day 15. We also investigated the effectiveness Ornidasil in the clinic. In the comparison group, postoperative wound suppuration occurred in 6 patients (31.6%), and in the main group - in 3 patients (12.5%). CONCLUSION Conclusions: A study of the effectiveness Ornidasil in the complex treatment of Diabetic foot syndrome showed that in the experimental groups, wound healing occurred 1.6 -1.9 times faster. The use of polyurethane wound protector in combination with Ornidasil reduced the suppuration of postoperative wounds in patients of the main group by 2.5 times relative to patients in the comparison group.
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Affiliation(s)
- Olga Bilyayeva
- SHUPYK NATIONAL HEALTHCARE UNIVERSITY OF UKRAINE, KYIV, UKRAINE
| | - Ivan Karol
- SHUPYK NATIONAL HEALTHCARE UNIVERSITY OF UKRAINE, KYIV, UKRAINE
| | | | - Alina Gaidai
- NATIONAL UNIVERSITY OF KYIV-MOHYLA ACADEMY, KYIV, UKRAINE
| | | | - Polina Vakuliuk
- NATIONAL UNIVERSITY OF KYIV-MOHYLA ACADEMY, KYIV, UKRAINE; POLISH ACADEMY OF SCIENCES, INSTITUTE OF AGROPHYSICS, WARSAW, POLAND
| | - Alexander Golub
- NATIONAL UNIVERSITY OF KYIV-MOHYLA ACADEMY, KYIV, UKRAINE; JUSTUS LIEBIG UNIVERSITY, GIESSEN, GERMANY
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Preparation and Characterization of Silica Nanoparticles and of Silica-Gentamicin Nanostructured Solution Obtained by Microwave-Assisted Synthesis. MATERIALS 2021; 14:ma14082086. [PMID: 33924275 PMCID: PMC8074919 DOI: 10.3390/ma14082086] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 04/16/2021] [Accepted: 04/18/2021] [Indexed: 11/17/2022]
Abstract
In this research work, silica nanoparticles and silica-gentamicin nanostructured solution were synthesized by using the microwave-assisted synthesis, in basic medium, using two silane precursors (tetraethylorthosilicate and octyltriethoxysilane) and the antibiotic (gentamicin sulfate). The prepared materials were characterized through Fourier transform infrared (FTIR) spectroscopy, TGA analysis, transmission electron microscopy (TEM), and atomic force microscopy (AFM) to investigate the morphology and structure. Antimicrobial studies of the silica-gentamicin nanostructured solution versus silica nanoparticles were performed against Pseudomonas aeruginosa, Staphylococcus aureus, and Escherichia coli. FTIR spectra showed that the gentamicin has been loaded to the silica nanoparticles. AFM analysis showed that the morphology of the silica-gentamicin nanostructured solution has changed, and agglomerations of particles are present at the surface. Antimicrobial testing, performed using the diffusion method through spot inoculation, indicates that the silica-gentamicin nanostructured solution exhibited activity against the resistant strain. The obtained silica-gentamicin solution can be used as biochemical agent for the prevention and treatment of microorganisms which are deposited on different surfaces (e.g., glass, plastic, ceramic).
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Al Thaher Y. Tailored gentamicin release from silica nanocarriers coated with polyelectrolyte multilayers. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126210] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Aydemir T, Liverani L, Pastore JI, Ceré SM, Goldmann WH, Boccaccini AR, Ballarre J. Functional behavior of chitosan/gelatin/silica-gentamicin coatings by electrophoretic deposition on surgical grade stainless steel. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 115:111062. [DOI: 10.1016/j.msec.2020.111062] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 03/18/2020] [Accepted: 05/05/2020] [Indexed: 02/08/2023]
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Milošević MM, Milanović M, Stijepović I, Srdić VV, Antov MG. Evaluation of mesoporous silica and Nb-doped titanate as molecule carriers through adsorption/desorption study. PARTICULATE SCIENCE AND TECHNOLOGY 2020. [DOI: 10.1080/02726351.2019.1573866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Maja M. Milošević
- Department of Applied and Engineering Chemistry, Faculty of Technology, University of Novi Sad, Novi Sad, Serbia
| | - Marija Milanović
- Department of Materials Engineering, Faculty of Technology, University of Novi Sad, Novi Sad, Serbia
| | - Ivan Stijepović
- Department of Materials Engineering, Faculty of Technology, University of Novi Sad, Novi Sad, Serbia
| | - Vladimir V. Srdić
- Department of Materials Engineering, Faculty of Technology, University of Novi Sad, Novi Sad, Serbia
| | - Mirjana G. Antov
- Department of Applied and Engineering Chemistry, Faculty of Technology, University of Novi Sad, Novi Sad, Serbia
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Hegazy M, Zhou P, Rahoui N, Wu G, Taloub N, Lin Y, Huang X, Huang Y. A facile design of smart silica nanocarriers via surface-initiated RAFT polymerization as a dual-stimuli drug release platform. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123797] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Paramanantham P, Siddhardha B, Lal Sb S, Sharan A, Alyousef AA, Al Dosary MS, Arshad M, Syed A. Antimicrobial photodynamic therapy on Staphylococcus aureus and Escherichia coli using malachite green encapsulated mesoporous silica nanoparticles: an in vitro study. PeerJ 2019; 7:e7454. [PMID: 31565548 PMCID: PMC6745189 DOI: 10.7717/peerj.7454] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 07/10/2019] [Indexed: 11/29/2022] Open
Abstract
Background Rise in the number of healthcare associated or hospital acquired infections is a major problem affecting the global healthcare sector. We evaluated superior antibacterial and antibiofilm photodynamic therapy (aPDT) using malachite green encapsulated mesoporous silica nanoparticles (MG-MSN) against Staphylococcus aureus and Escherichia coli, which are known to be major causative agents of nosocomial infections. Methods Malachite green (MG) was encapsulated on mesoporous silica nanoparticles (MSN). Fourier-transform infrared spectroscopy, Transmission electron microscopy, and spectroscopic analysis were performed to characterize the MG-MSN. The antimicrobial efficacies of MSN, MG, and MG-MSN were investigated and the results were recorded. Results MG-MSN was effective against both the tested bacteria. S. aureus was more phototoxic to MG-MSN compared to E. coli. The antibiofilm efficacy of MG-MSN on E. coli and S. aureus was also studied. Biofilm inhibition was 65.68 ± 2.62% in E. coli and 79.66 ± 3.82% in S. aureus. Cell viability assay, exopolysaccharides quantification, and confocal laser scanning microscopy studies also revealed the enhanced antibiofilm activity of MG-MSN when used as a potential photosensitizer for aPDT. This study can be extended to eradicate these strains from localized superficial infections and medical appliances, preventing nosocomial infections.
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Affiliation(s)
| | - Busi Siddhardha
- Department of Microbiology, School of Life Sciences, Pondicherry University, Pondicherry, India
| | - Sruthil Lal Sb
- Department of Physics, School of Physical, Chemical and Applied Sciences, Pondicherry University, Pondicherry, India
| | - Alok Sharan
- Department of Physics, School of Physical, Chemical and Applied Sciences, Pondicherry University, Pondicherry, India
| | - Abdullah A Alyousef
- Microbiology Research Group, Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Mohammed Saeed Al Dosary
- Microbiology Research Group, Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Mohammed Arshad
- Microbiology Research Group, Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Asad Syed
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
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Perni S, Caserta S, Pasquino R, Jones SA, Prokopovich P. Prolonged Antimicrobial Activity of PMMA Bone Cement with Embedded Gentamicin-Releasing Silica Nanocarriers. ACS APPLIED BIO MATERIALS 2019; 2:1850-1861. [DOI: 10.1021/acsabm.8b00752] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Stefano Perni
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff CF10 3NB, United Kingdom
| | - Sergio Caserta
- Department of Chemical, Materials and Industrial Production Engineering, University of Naples Federico II, Napoli 80125, Italy
| | - Rossana Pasquino
- Department of Chemical, Materials and Industrial Production Engineering, University of Naples Federico II, Napoli 80125, Italy
| | - Steve A. Jones
- University Hospital Llandough, Cardiff & Vale University Health Board, Penlan Road, Penarth, Vale of Glamorgan, Wales CF64 2XX, United Kingdom
| | - Polina Prokopovich
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff CF10 3NB, United Kingdom
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Parasuraman P, Antony AP, B SLS, Sharan A, Siddhardha B, Kasinathan K, Bahkali NA, Dawoud TMS, Syed A. Antimicrobial photodynamic activity of toluidine blue encapsulated in mesoporous silica nanoparticles against Pseudomonas aeruginosa and Staphylococcus aureus. BIOFOULING 2019; 35:89-103. [PMID: 30835535 DOI: 10.1080/08927014.2019.1570501] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
In the present study, the antimicrobial and antibiofilm efficacy of toluidine blue (TB) encapsulated in mesoporous silica nanoparticles (MSN) was investigated against Pseudomonas aeruginosa and Staphylococcus aureus treated with antimicrobial photodynamic therapy (aPDT) using a red diode laser 670 nm wavelength, 97.65 J cm-2 radiant exposure, 5 min). Physico-chemical techniques (UV-visible (UV-vis) absorption, photoluminescence emission, excitation, and FTIR) and high-resolution transmission electron microscopy (HR-TEM) were employed to characterize the conjugate of TB encapsulated in MSN (TB MSN). TB MSN showed maximum antimicrobial activities corresponding to 5.03 and 5.56 log CFU ml-1 reductions against P. aeruginosa and S. aureus, respectively, whereas samples treated with TB alone showed 2.36 and 2.66 log CFU ml-1 reductions. Anti-biofilm studies confirmed that TB MSN effectively inhibits biofilm formation and production of extracellular polymeric substances by P. aeruginosa and S. aureus.
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Affiliation(s)
| | - Asha P Antony
- a Department of Microbiology, School of Life Sciences , Pondicherry University , Puducherry , India
| | - Sruthil Lal S B
- b Department of Physics, School of Physical, Chemical and Applied Sciences , Pondicherry University , Puducherry , India
| | - Alok Sharan
- b Department of Physics, School of Physical, Chemical and Applied Sciences , Pondicherry University , Puducherry , India
| | - Busi Siddhardha
- a Department of Microbiology, School of Life Sciences , Pondicherry University , Puducherry , India
| | - Kaviyarasu Kasinathan
- c UNESCO-UNISA Africa Chair in Nanoscience's/Nanotechnology Laboratories, College of Graduate Studies , University of South Africa (UNISA) , Ridge , South Africa
- d Nanosciences African Network (NANOAFNET), Materials Research Group (MRG) , iThemba LABS-National Research Foundation (NRF) , Somerset West , Western Cape Province , South Africa
| | - Needa A Bahkali
- e Biological Sciences Department, Wagner College , Staten Island , NY , USA
| | - Turki M S Dawoud
- f Department of Botany and Microbiology, College of Science , King Saud University , Riyadh , Saudi Arabia
| | - Asad Syed
- f Department of Botany and Microbiology, College of Science , King Saud University , Riyadh , Saudi Arabia
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Monti S, Jose J, Sahajan A, Kalarikkal N, Thomas S. Structure and dynamics of gold nanoparticles decorated with chitosan–gentamicin conjugates: ReaxFF molecular dynamics simulations to disclose drug delivery. Phys Chem Chem Phys 2019; 21:13099-13108. [DOI: 10.1039/c9cp02357g] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Functionalized gold nanoparticles for antibiotic drug delivery: from the nanoscale to the atomic scale.
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Affiliation(s)
- Susanna Monti
- CNR-ICCOM
- Institute of Chemistry of Organometallic Compounds
- I-56124 Pisa
- Italy
| | - Jiya Jose
- International and Inter University Centre for Nanoscience and Nanotechnology
- Mahatma Gandhi University
- Kottayam-686 560
- India
| | - Athira Sahajan
- International and Inter University Centre for Nanoscience and Nanotechnology
- Mahatma Gandhi University
- Kottayam-686 560
- India
| | - Nandakumar Kalarikkal
- International and Inter University Centre for Nanoscience and Nanotechnology
- Mahatma Gandhi University
- Kottayam-686 560
- India
| | - Sabu Thomas
- International and Inter University Centre for Nanoscience and Nanotechnology
- Mahatma Gandhi University
- Kottayam-686 560
- India
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Al Thaher Y, Yang L, Jones SA, Perni S, Prokopovich P. LbL-assembled gentamicin delivery system for PMMA bone cements to prolong antimicrobial activity. PLoS One 2018; 13:e0207753. [PMID: 30543660 PMCID: PMC6292632 DOI: 10.1371/journal.pone.0207753] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 11/06/2018] [Indexed: 01/06/2023] Open
Abstract
INTRODUCTION Antibiotic-loaded poly(methyl methacrylate) bone cements (ALBCs) are widely used in total joint replacement (TJR), for local delivery of antibiotics to provide prophylaxis against prosthetic joint infections (PJI). One of the shortcomings of the current generation of ALBCs is that the antibiotic release profile is characterized by a burst over the first few hours followed by a sharp decrease in rate for the following several days (often below minimum inhibitory concentration (MIC)), and, finally, exhaustion (after, typically, ~ 20 d). This profile means that the ALBCs provide only short-term antimicrobial action against bacterial strains involved PJI. RATIONALE The purpose of the present study was to develop an improved antibiotic delivery system for an ALBC. This system involved using a layer-by-layer technique to load the antibiotic (gentamicin sulphate) (GEN) on silica nanoparticles, which are then blended with the powder of the cement. Then, the powder was mixed with the liquid of the cement (NP-GEN cement). For controls, two GEN-loaded brands were used (Cemex Genta and Palacos R+G). Gentamicin release and a host of other relevant properties were determined for all the cements studied. RESULTS Compared to control cement specimens, improved GEN release, longer antimicrobial activity (against clinically-relevant bacterial strains), and comparable setting time, cytocompatibility, compressive strength (both prior to and after aging in PBS at 37 oC for 30 d), 4-point bend strength and modulus, fracture toughness, and PBS uptake. CONCLUSIONS NP-GEN cement may have a role in preventing or treating PJI.
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Affiliation(s)
- Yazan Al Thaher
- School of Pharmacy and Pharmaceutical Science, Cardiff University, Cardiff, United Kingdom
| | - Lirong Yang
- School of Pharmacy and Pharmaceutical Science, Cardiff University, Cardiff, United Kingdom
| | - Steve A. Jones
- University Hospital Llandough, Cardiff & Vale University Health Board, Vale of Glamorgan, Wales, United Kingdom
| | - Stefano Perni
- School of Pharmacy and Pharmaceutical Science, Cardiff University, Cardiff, United Kingdom
| | - Polina Prokopovich
- School of Pharmacy and Pharmaceutical Science, Cardiff University, Cardiff, United Kingdom
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Xiang J, Ge F, Yu B, Yan Q, Shi F, Zhao Y. Nanocomplexes of Photolabile Polyelectrolyte and Upconversion Nanoparticles for Near-Infrared Light-Triggered Payload Release. ACS APPLIED MATERIALS & INTERFACES 2018; 10:20790-20800. [PMID: 29847100 DOI: 10.1021/acsami.8b05063] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A new approach to encapsulating charged cargo molecules into a nanovector and subsequently using near-infrared (NIR) light to trigger the release is demonstrated. NIR light-responsive nanovector was prepared through electrostatic interaction-driven complexation between negatively charged silica-coated upconversion nanoparticles (UCNP@silica, 87 nm hydrodynamic diameter, polydispersity index ∼0.05) and a positively charged UV-labile polyelectrolyte bearing pendants of poly(ethylene glycol) and o-nitrobenzyl side groups; whereas charged fluorescein (FLU) was loaded through a co-complexation process. By controlling the amount of polyelectrolyte, UCNP@silica can be covered by the polymer, whereas remaining dispersed in aqueous solution. Under 980 nm laser excitation, UV light emitted by UCNP is absorbed by photolytic side groups within polyelectrolyte, which results in cleavage of o-nitrobenzyl groups and formation of carboxylic acid groups. Such NIR light-induced partial reversal of positive charge to negative charge on the polyelectrolyte layer disrupts the equilibrium among UCNP@silica, polyelectrolyte, and FLU and, consequently, leads to release of FLU molecules.
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Affiliation(s)
- Jun Xiang
- Département de Chimie , Université de Sherbrooke , Sherbrooke , Québec J1K 2R1 , Canada
| | - Feijie Ge
- Département de Chimie , Université de Sherbrooke , Sherbrooke , Québec J1K 2R1 , Canada
| | - Bing Yu
- Département de Chimie , Université de Sherbrooke , Sherbrooke , Québec J1K 2R1 , Canada
| | - Qiang Yan
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science , Fudan University , Shanghai 200433 , China
| | - Feng Shi
- School of Materials Science and Engineering , Shaanxi Normal University , Xi'an 710119 , China
| | - Yue Zhao
- Département de Chimie , Université de Sherbrooke , Sherbrooke , Québec J1K 2R1 , Canada
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Al Thaher Y, Latanza S, Perni S, Prokopovich P. Role of poly-beta-amino-esters hydrolysis and electrostatic attraction in gentamicin release from layer-by-layer coatings. J Colloid Interface Sci 2018; 526:35-42. [PMID: 29715613 DOI: 10.1016/j.jcis.2018.04.042] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 04/08/2018] [Accepted: 04/09/2018] [Indexed: 10/17/2022]
Abstract
Layer-by-layer (LbL) deposition is a versatile technique that has been employed in numerous industrial applications i.e. biomaterials, drug delivery and electronics to confer peculiar properties to the system. When LbL is employed for drug delivery, the active molecule is sandwiched between layers of polyelectrolytes and the release is controlled by the diffusion of the drug through the layers and the possible hydrolysis of the coating (delamination). Poly-beta-amino-esters (PBAEs) are a class of hydrolysable polyelectrolytes that have been widely used in DNA delivery and for LbL on medical devices. Their use allowed the controlled release of antibiotics and other bioactive compounds from the surface of medical devices without cytotoxic effects. The general accepted consensus is that drug released from LbL coating assembled using PBAEs is the results of the polymer hydrolysis; however, no attention has been paid to the role of the electrostatic attraction between PBAE and the other polyelectrolyte utilised in the LbL assembly. In this work, we prepared LbL coatings on the surface of silica nanoparticles entrapping gentamicin as model drug and demonstrated that the drug release from PBAEs containing LbL coatings is predominantly controlled by the electrostatic attraction between opposite charged electrolytes. The positive charge of PBAE decreased from pH = 5 to pH = 7.4 while alginate negative charges remained unchanged in this pH range while PBAE hydrolysis kinetics was faster, as determined with Gel Permeation Chromatography (GPC), in acidic conditions. When PBAE were employed in the LbL construct higher levels of drug were released at pH = 7.4 than at pH = 5; additionally, replacing PBAE with chitosan (the charge of chitosan is not influenced in this pH range) resulted in comparable gentamicin release kinetics at pH = 5.
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Affiliation(s)
- Yazan Al Thaher
- School of Pharmacy and Pharmaceutical Science, Cardiff University, Cardiff, UK
| | - Silvia Latanza
- School of Pharmacy and Pharmaceutical Science, Cardiff University, Cardiff, UK
| | - Stefano Perni
- School of Pharmacy and Pharmaceutical Science, Cardiff University, Cardiff, UK
| | - Polina Prokopovich
- School of Pharmacy and Pharmaceutical Science, Cardiff University, Cardiff, UK.
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