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Reactive metal boride nanoparticles trap lipopolysaccharide and peptidoglycan for bacteria-infected wound healing. Nat Commun 2022; 13:7353. [PMID: 36446788 PMCID: PMC9708144 DOI: 10.1038/s41467-022-35050-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 11/17/2022] [Indexed: 11/30/2022] Open
Abstract
Bacteria and excessive inflammation are two main factors causing non-healing wounds. However, current studies have mainly focused on the inhibition of bacteria survival for wound healing while ignoring the excessive inflammation induced by dead bacteria-released lipopolysaccharide (LPS) or peptidoglycan (PGN). Herein, a boron-trapping strategy has been proposed to prevent both infection and excessive inflammation by synthesizing a class of reactive metal boride nanoparticles (MB NPs). Our results show that the MB NPs are gradually hydrolyzed to generate boron dihydroxy groups and metal cations while generating a local alkaline microenvironment. This microenvironment greatly enhances boron dihydroxy groups to trap LPS or PGN through an esterification reaction, which not only enhances metal cation-induced bacterial death but also inhibits dead bacteria-induced excessive inflammation both in vitro and in vivo, finally accelerating wound healing. Taken together, this boron-trapping strategy provides an approach to the treatment of bacterial infection and the accompanying inflammation.
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Mérai L, Deák Á, Dékány I, Janovák L. Fundamentals and utilization of solid/ liquid phase boundary interactions on functional surfaces. Adv Colloid Interface Sci 2022; 303:102657. [PMID: 35364433 DOI: 10.1016/j.cis.2022.102657] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 03/23/2022] [Accepted: 03/24/2022] [Indexed: 12/16/2022]
Abstract
The affinity of macroscopic solid surfaces or dispersed nano- and bioparticles towards liquids plays a key role in many areas from fluid transport to interactions of the cells with phase boundaries. Forces between solid interfaces in water become especially important when the surface texture or particles are in the colloidal size range. Although, solid-liquid interactions are still prioritized subjects of materials science and therefore are extensively studied, the related literature still lacks in conclusive approaches, which involve as much information on fundamental aspects as on recent experimental findings related to influencing the wetting and other wetting-related properties and applications of different surfaces. The aim of this review is to fill this gap by shedding light on the mechanism-of-action and design principles of different, state-of-the-art functional macroscopic surfaces, ranging from self-cleaning, photoreactive or antimicrobial coatings to emulsion separation membranes, as these surfaces are gaining distinguished attention during the ongoing global environmental and epidemic crises. As there are increasing numbers of examples for stimulus-responsive surfaces and their interactions with liquids in the literature, as well, this overview also covers different external stimulus-responsive systems, regarding their mechanistic principles and application possibilities.
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Application of Nanomaterials in the Prevention, Detection, and Treatment of Methicillin-Resistant Staphylococcus aureus (MRSA). Pharmaceutics 2022; 14:pharmaceutics14040805. [PMID: 35456638 PMCID: PMC9030647 DOI: 10.3390/pharmaceutics14040805] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 04/01/2022] [Accepted: 04/04/2022] [Indexed: 01/27/2023] Open
Abstract
Due to differences in geographic surveillance systems, chemical sanitization practices, and antibiotic stewardship (AS) implementation employed during the COVID-19 pandemic, many experts have expressed concerns regarding a future surge in global antimicrobial resistance (AMR). A potential beneficiary of these differences is the Gram-positive bacteria MRSA. MRSA is a bacterial pathogen with a high potential for mutational resistance, allowing it to engage various AMR mechanisms circumventing conventional antibiotic therapies and the host’s immune response. Coupled with a lack of novel FDA-approved antibiotics reaching the clinic, the onus is on researchers to develop alternative treatment tools to mitigate against an increase in pathogenic resistance. Mitigation strategies can take the form of synthetic or biomimetic nanomaterials/vesicles employed in vaccines, rapid diagnostics, antibiotic delivery, and nanotherapeutics. This review seeks to discuss the current potential of the aforementioned nanomaterials in detecting and treating MRSA.
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Badica P, Batalu ND, Chifiriuc MC, Burdusel M, Grigoroscuta MA, Aldica GV, Pasuk I, Kuncser A, Popa M, Agostino A, Operti L, Padhi SK, Bonino V, Truccato M. Sintered and 3D-Printed Bulks of MgB 2-Based Materials with Antimicrobial Properties. Molecules 2021; 26:molecules26196045. [PMID: 34641589 PMCID: PMC8512174 DOI: 10.3390/molecules26196045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/27/2021] [Accepted: 09/28/2021] [Indexed: 11/24/2022] Open
Abstract
Pristine high-density bulk disks of MgB2 with added hexagonal BN (10 wt.%) were prepared using spark plasma sintering. The BN-added samples are machinable by chipping them into desired geometries. Complex shapes of different sizes can also be obtained by the 3D printing of polylactic acid filaments embedded with MgB2 powder particles (10 wt.%). Our present work aims to assess antimicrobial activity quantified as viable cells (CFU/mL) vs. time of sintered and 3D-printed materials. In vitro antimicrobial tests were performed against the bacterial strains Escherichia coli ATCC 25922, Pseudomonas aeruginosa ATCC 27853, Staphylococcus aureus ATCC 25923, Enterococcus faecium DSM 13590, and Enterococcus faecalis ATCC 29212; and the yeast strain Candida parapsilosis ATCC 22019. The antimicrobial effects were found to depend on the tested samples and microbes, with E. faecium being the most resistant and E. coli the most susceptible.
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Affiliation(s)
- Petre Badica
- National Institute of Materials Physics, 405A Atomistilor Street, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (I.P.); (A.K.)
- Correspondence: (P.B.); (M.P.); Tel.: +40-21-3690185 (P.B.); +40-21-3690185 (M.P.)
| | - Nicolae Dan Batalu
- Faculty of Material Science and Engineering, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania;
| | - Mariana Carmen Chifiriuc
- Faculty of Biology and The Research Institute of the University of Bucharest (ICUB), University of Bucharest, 91-95 Splaiul Independentei, 050095 Bucharest, Romania;
| | - Mihail Burdusel
- National Institute of Materials Physics, 405A Atomistilor Street, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (I.P.); (A.K.)
| | - Mihai Alexandru Grigoroscuta
- National Institute of Materials Physics, 405A Atomistilor Street, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (I.P.); (A.K.)
| | - Gheorghe Virgil Aldica
- National Institute of Materials Physics, 405A Atomistilor Street, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (I.P.); (A.K.)
| | - Iuliana Pasuk
- National Institute of Materials Physics, 405A Atomistilor Street, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (I.P.); (A.K.)
| | - Andrei Kuncser
- National Institute of Materials Physics, 405A Atomistilor Street, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (I.P.); (A.K.)
| | - Marcela Popa
- Faculty of Biology and The Research Institute of the University of Bucharest (ICUB), University of Bucharest, 91-95 Splaiul Independentei, 050095 Bucharest, Romania;
- Correspondence: (P.B.); (M.P.); Tel.: +40-21-3690185 (P.B.); +40-21-3690185 (M.P.)
| | - Angelo Agostino
- Physics and Chemistry Departments, University of Turin, 1-7 Via Pietro Giuria, 10125 Turin, Italy; (A.A.); (L.O.); (S.K.P.); (V.B.); (M.T.)
| | - Lorenza Operti
- Physics and Chemistry Departments, University of Turin, 1-7 Via Pietro Giuria, 10125 Turin, Italy; (A.A.); (L.O.); (S.K.P.); (V.B.); (M.T.)
| | - Santanu Kumar Padhi
- Physics and Chemistry Departments, University of Turin, 1-7 Via Pietro Giuria, 10125 Turin, Italy; (A.A.); (L.O.); (S.K.P.); (V.B.); (M.T.)
| | - Valentina Bonino
- Physics and Chemistry Departments, University of Turin, 1-7 Via Pietro Giuria, 10125 Turin, Italy; (A.A.); (L.O.); (S.K.P.); (V.B.); (M.T.)
- European Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Marco Truccato
- Physics and Chemistry Departments, University of Turin, 1-7 Via Pietro Giuria, 10125 Turin, Italy; (A.A.); (L.O.); (S.K.P.); (V.B.); (M.T.)
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Padhi SK, Baglieri N, Bonino V, Agostino A, Operti L, Batalu ND, Chifiriuc MC, Popa M, Burdusel M, Grigoroscuta MA, Aldica GV, Radu D, Badica P, Truccato M. Antimicrobial Activity of MgB 2 Powders Produced via Reactive Liquid Infiltration Method. Molecules 2021; 26:4966. [PMID: 34443553 PMCID: PMC8399391 DOI: 10.3390/molecules26164966] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 08/11/2021] [Accepted: 08/13/2021] [Indexed: 12/05/2022] Open
Abstract
We report for the first time on the antimicrobial activity of MgB2 powders produced via the Reactive Liquid Infiltration (RLI) process. Samples with MgB2 wt.% ranging from 2% to 99% were obtained and characterized, observing different levels of grain aggregation and of impurity phases. Their antimicrobial activity was tested against Staphylococcus aureus ATCC BAA 1026, Enterococcus faecalis ATCC 29212, Escherichia coli ATCC 25922, Pseudomonas aeruginosa ATCC 27853, and Candida albicans ATCC 10231. A general correlation is observed between the antibacterial activity and the MgB2 wt.%, but the sample microstructure also appears to be very important. RLI-MgB2 powders show better performances compared to commercial powders against microbial strains in the planktonic form, and their activity against biofilms is also very similar.
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Affiliation(s)
- Santanu Kumar Padhi
- Physics and Chemistry Departments, University of Turin, Via P. Giuria 1-7, 10125 Turin, Italy; (S.K.P.); (N.B.); (V.B.); (A.A.); (L.O.)
| | - Nicoletta Baglieri
- Physics and Chemistry Departments, University of Turin, Via P. Giuria 1-7, 10125 Turin, Italy; (S.K.P.); (N.B.); (V.B.); (A.A.); (L.O.)
| | - Valentina Bonino
- Physics and Chemistry Departments, University of Turin, Via P. Giuria 1-7, 10125 Turin, Italy; (S.K.P.); (N.B.); (V.B.); (A.A.); (L.O.)
- European Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Angelo Agostino
- Physics and Chemistry Departments, University of Turin, Via P. Giuria 1-7, 10125 Turin, Italy; (S.K.P.); (N.B.); (V.B.); (A.A.); (L.O.)
| | - Lorenza Operti
- Physics and Chemistry Departments, University of Turin, Via P. Giuria 1-7, 10125 Turin, Italy; (S.K.P.); (N.B.); (V.B.); (A.A.); (L.O.)
| | - Nicolae Dan Batalu
- Metallic Materials Science, Physical Metallurgy Department, Faculty of Materials Science and Engineering, University Politehnica of Bucharest, Splaiul Independentei 313, 060042 Bucharest, Romania;
| | - Mariana Carmen Chifiriuc
- Faculty of Biology, Research Institute of the University of Bucharest (ICUB), University of Bucharest, Spl. Independentei 91-95, 050095 Bucharest, Romania; (M.C.C.); (M.P.)
- Academy of Romanian Scientists, 050094 Bucharest, Romania
| | - Marcela Popa
- Faculty of Biology, Research Institute of the University of Bucharest (ICUB), University of Bucharest, Spl. Independentei 91-95, 050095 Bucharest, Romania; (M.C.C.); (M.P.)
| | - Mihail Burdusel
- National Institute of Materials Physics, Street Atomistilor 405A, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (D.R.)
| | - Mihai Alexandru Grigoroscuta
- National Institute of Materials Physics, Street Atomistilor 405A, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (D.R.)
| | - Gheorghe Virgil Aldica
- National Institute of Materials Physics, Street Atomistilor 405A, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (D.R.)
| | - Dana Radu
- National Institute of Materials Physics, Street Atomistilor 405A, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (D.R.)
| | - Petre Badica
- National Institute of Materials Physics, Street Atomistilor 405A, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (D.R.)
| | - Marco Truccato
- Physics and Chemistry Departments, University of Turin, Via P. Giuria 1-7, 10125 Turin, Italy; (S.K.P.); (N.B.); (V.B.); (A.A.); (L.O.)
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