1
|
Kaur S, Kalia A, Sharma SP. Fabrication and characterization of nano-hydroxyapatite particles and assessment of the effect of their supplementation on growth of bacterial root endosymbionts of cowpea. INORG NANO-MET CHEM 2022. [DOI: 10.1080/24701556.2022.2078349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Simranjot Kaur
- Department of Microbiology, College of Basic Sciences and Humanities, Punjab Agricultural University, Punjab, India
| | - Anu Kalia
- Department of Soil Science, Electron Microscopy and Nanoscience Laboratory, Punjab Agricultural University, Punjab, India
| | - Sat Pal Sharma
- Department of Vegetable Science, College of Horticulture and Forestry, Punjab Agricultural University, Punjab, India
| |
Collapse
|
2
|
Miran W, Naradasu D, Okamoto A. Pathogens electrogenicity as a tool for in-situ metabolic activity monitoring and drug assessment in biofilms. iScience 2021; 24:102068. [PMID: 33554070 PMCID: PMC7859304 DOI: 10.1016/j.isci.2021.102068] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Concerns regarding increased antibiotic resistance arising from the emergent properties of biofilms have spurred interest in the discovery of novel antibiotic agents and techniques to directly estimate metabolic activity in biofilms. Although a number of methods have been developed to quantify biofilm formation, real-time quantitative assessment of metabolic activity in label-free biofilms remains a challenge. Production of electrical current via extracellular electron transport (EET) has recently been found in pathogens and appears to correlate with their metabolic activity. Accordingly, monitoring the production of electrical currents as an indicator of cellular metabolic activity in biofilms represents a new direction for research aiming to assess and screen the effects of antimicrobials on biofilm activity. In this article, we reviewed EET-capable pathogens and the methods to monitor biofilm activity to discuss advantages of using the capability of pathogens to produce electrical currents and effective combination of these methods. Moreover, we discussed EET mechanisms by pathogenic and environmental bacteria and open questions for the physiological roles of EET in pathogen's biofilm. The present limitations and possible future directions of in situ biofilm metabolic activity assessment for large-scale screening of antimicrobials are also discussed.
Collapse
Affiliation(s)
- Waheed Miran
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Divya Naradasu
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Akihiro Okamoto
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, North 13 West 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| |
Collapse
|
3
|
Grynyuk II, Vasyliuk OM, Prylutska SV, Strutynska NY, Livitska OV, Slobodyanik MS. Influence of nanoscale-modified apatite-type calcium phosphates on the biofilm formation by pathogenic microorganisms. OPEN CHEM 2021. [DOI: 10.1515/chem-2021-0199] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Abstract
Nanoparticles (25–50 nm) of chemically modified calcium phosphates Ca10−x−y
M
ii
x
Na
y
(PO4)6−z
(CO3)
z
(OH)2 (M
ii
– Cu2+, Zn2+) were synthesized via a wet precipitation method at room temperature. The Fourier-transform infrared spectroscopy data confirmed the partial substitution of
PO
4
3
−
{\text{PO}}_{4}^{3-}
→
CO
3
2
−
{\text{CO}}_{3}^{2-}
(B-type) in apatite-type structure. The influence of prepared phosphates on biofilm formation by pathogenic microorganisms was investigated. It was found that the samples Na+,
CO
3
2
−
{\text{CO}}_{3}^{2-}
-hydroxyapatite (HAP) and Na+, Zn2+,
CO
3
2
−
{\text{CO}}_{3}^{2-}
-HAP (5–20 mM) had the highest inhibitory effect on biofilm formation by Staphylococcus aureus strains. The sample Na+,
CO
3
2
−
{\text{CO}}_{3}^{2-}
-HAP had the slight influence on the formation of the biofilm by Pseudomonas aeruginosa, while for the samples Na+, Cu2+,
CO
3
2
−
{\text{CO}}_{3}^{2-}
-HAP and Na+, Zn2+,
CO
3
2
−
{\text{CO}}_{3}^{2-}
-HAP such an effect was not detected. According to transmission electron microscopy data, a correlation between the activity of synthesized apatite-related modified calcium phosphates in the processes of biofilm formation and their ability to adhere to the surface of bacterial cells was established. The prepared samples can be used for the design of effective materials with antibacterial activity for medicine.
Collapse
Affiliation(s)
- Iryna I. Grynyuk
- Department Chemistry, Taras Shevchenko National University of Kyiv , 64/13, Volodymyrska Str., 01601 , Kyiv , Ukraine
| | - Olga M. Vasyliuk
- Department of Physiology of Industrial Microorganisms, Zabolotny Institute of Microbiology and Virology, National Academy of Science of Ukraine , 154, Zabolotnogo str, 03143 , Kyiv , Ukraine
| | - Svitlana V. Prylutska
- Department Chemistry, Taras Shevchenko National University of Kyiv , 64/13, Volodymyrska Str., 01601 , Kyiv , Ukraine
| | - Nataliia Yu. Strutynska
- Department Chemistry, Taras Shevchenko National University of Kyiv , 64/13, Volodymyrska Str., 01601 , Kyiv , Ukraine
| | - Oksana V. Livitska
- Department Chemistry, Taras Shevchenko National University of Kyiv , 64/13, Volodymyrska Str., 01601 , Kyiv , Ukraine
| | - Mykola S. Slobodyanik
- Department Chemistry, Taras Shevchenko National University of Kyiv , 64/13, Volodymyrska Str., 01601 , Kyiv , Ukraine
| |
Collapse
|
4
|
Liu F, Cheng X, Xiao L, Wang Q, Yan K, Su Z, Wang L, Ma C, Wang Y. Inside-outside Ag nanoparticles-loaded polylactic acid electrospun fiber for long-term antibacterial and bone regeneration. Int J Biol Macromol 2020; 167:1338-1348. [PMID: 33232699 DOI: 10.1016/j.ijbiomac.2020.11.088] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/10/2020] [Accepted: 11/12/2020] [Indexed: 12/13/2022]
Abstract
Bone infections caused by bacteria during bone graft implantations can impair the ability of bone tissue repair, which is currently a clinical problem. In this study, the electrospinning technique was used to prepare a polylactic acid (PLLA)/silver (Ag) composite fiber, in which the silver nanoparticles (Ag-NPs) were uniformly distributed on the inner surface of PLLA fibers; dopamine (DA) was self-polymerized on the composite fiber surface to construct the adhesive polydopamine (PDA) film and chitosan (CS) was used to regulate Ag+ in situ through pulse electrochemical deposition for the construction of a stable Ag-NPs coating (CS/Ag), achieving the steady and slow release of Ag-NPs, therefore accomplishing the construction of a "inside-outside" Ag-NPs-loaded PLLA/Ag@PDA@CS/Ag composite fiber with dual functions of long-lasting antibacterial effect as well as bone regeneration promotion ability. The study results showed that the composite fiber has an excellent antibacterial effect against E. coli and S. aureus, and good osteoinductive and angiogenic properties. In summary, under the dual regulations of the strong adhesion of PDA and CS chelation, the "inside-outside" Ag-NPs-loaded composite fiber was endowed with good physiological stability, long-term antibacterial effect and bone infection inhibition ability, making it a promising bone implant material.
Collapse
Affiliation(s)
- Feifei Liu
- College of Chemical Engineering, Xinjiang Normal University, Urumqi 830054, Xinjiang, PR China
| | - Xuewei Cheng
- College of Chemical Engineering, Xinjiang Normal University, Urumqi 830054, Xinjiang, PR China
| | - Lu Xiao
- College of Chemical Engineering, Xinjiang Normal University, Urumqi 830054, Xinjiang, PR China
| | - Qiang Wang
- Department of Orthopedics, The First Affiliated Hospital of Wannan Medical College, Wuhu 241001, Anhui, PR China
| | - Kun Yan
- Traumatic Orthopedics, The 6th affiliated hospital of Xinjiang Medical University, 39 Wuxin Road, Urumqi 830001, PR China
| | - Zhi Su
- College of Chemical Engineering, Xinjiang Normal University, Urumqi 830054, Xinjiang, PR China
| | - Lei Wang
- Department of Orthopedics, The First Affiliated Hospital of Wannan Medical College, Wuhu 241001, Anhui, PR China.
| | - Chuang Ma
- Department of Orthopedics Center, the First Affiliated Hospital of Xinjiang Medical University, 393 Xinyi Road, Urumqi 830054, PR China.
| | - Yingbo Wang
- College of Chemical Engineering, Xinjiang Normal University, Urumqi 830054, Xinjiang, PR China.
| |
Collapse
|
5
|
Inhibitory Effect of 5-Aminoimidazole-4-Carbohydrazonamides Derivatives Against Candida spp. Biofilm on Nanohydroxyapatite Substrate. Mycopathologia 2019; 184:775-786. [PMID: 31679132 DOI: 10.1007/s11046-019-00400-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 10/15/2019] [Indexed: 12/17/2022]
Abstract
Candida can adhere and form biofilm on biomaterials commonly used in medical devices which is a key attribute that enhances its ability to cause infections in humans. Furthermore, biomaterial-related infections represent a major therapeutic challenge since Candida biofilms are implicated in antifungal therapies failure. The goals of the present work were to investigate the effect of three 5-aminoimidazole-4-carbohydrazonamides, namely (Z)-5-amino-1-methyl-N'-aryl-1H-imidazole-4-carbohydrazonamides [aryl = phenyl (1a), 4-fluorophenyl (1b), 3-fluorophenyl (1c)], on Candida albicans and Candida krusei biofilm on nanohydroxyapatite substrate, a well-known bioactive ceramic material. To address these goals, both quantitative methods (by cultivable cell numbers) and qualitative evaluation (by scanning electron microscopy) were used. Compounds cytocompatibility towards osteoblast-like cells was also evaluated after 24 h of exposure, through resazurin assay. The three tested compounds displayed a strong inhibitory effect on biofilm development of both Candida species as potent in vitro activity against C. albicans sessile cells. Regarding cytocompatibility, a concentration-dependent effect was observed. Together, these findings indicated that the potent activity of imidazole derivatives on Candida spp. biofilms on nanohydroxyapatite substrate, in particular compound 1c, is worth further investigating.
Collapse
|
6
|
Antibacterial bone substitute of hydroxyapatite and magnesium oxide to prevent dental and orthopaedic infections. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 97:529-538. [DOI: 10.1016/j.msec.2018.12.059] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 10/11/2018] [Accepted: 12/18/2018] [Indexed: 01/16/2023]
|
7
|
Garino N, Sanvitale P, Dumontel B, Laurenti M, Colilla M, Izquierdo-Barba I, Cauda V, Vallet-Regì M. Zinc oxide nanocrystals as a nanoantibiotic and osteoinductive agent. RSC Adv 2019; 9:11312-11321. [PMID: 31024686 PMCID: PMC6478122 DOI: 10.1039/c8ra10236h] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this paper we aim to analyse the behaviour of ZnO nanocrystals (ZnO NCs), prepared with a new synthetic approach and not embedded in any composite matrix, for bone implant applications in vitro. In particular, we have developed a novel, fast and reproducible microwave-assisted synthesis, to obtain highly-crystalline, round-shaped ZnO NCs of 20 nm in diameter as an extremely-stable colloidal solution in ethanol. The nanocrystals were also partially chemically functionalized by anchoring amino-propyl groups to the ZnO surface (ZnO–NH2 NCs). Thus, the role of both ZnO NC concentration and surface chemistry were tested in terms of biocompatibility towards pre-osteoblast cells, promotion of cell proliferation and differentiation, and also in terms of antimicrobial activity against Gram positive and negative bacteria, such as Escherichia coli and Staphylococcus aureus, respectively. The results suggest that ZnO–NH2 NCs is the most promising candidate to solve infectious disease in bone implants and at the same time promote bone tissue proliferation, even at high concentrations. Although further investigations are needed to clarify the mechanism underlying the inhibition of biofilm formation and to investigate the role of the ZnO–NH2 NCs in in vivo assays, we demonstrated that fine and reproducible control over the chemical and structural parameters in ZnO nanomaterials can open up new horizons in the use of functionalized ZnO NCs as a highly biocompatible and osteoinductive nanoantibiotic agent for bone tissue engineering. Nanomaterials for bone tissue engineering are developing to new solutions against infections, antibiotic resistance, promotion of new bone. ZnO nanocrystals are promising candidates with intrinsic antimicrobial activity and high biocompatibility.![]()
Collapse
Affiliation(s)
- Nadia Garino
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy.,Istituto Italiano di Tecnologia, Center for Sustainable Future Technologies, Via Livorno 60, 10144 Torino, Italy
| | - Pasquale Sanvitale
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy
| | - Bianca Dumontel
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy
| | - Marco Laurenti
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy
| | - Montserrat Colilla
- Departamento de Química en Ciencias Farmacéuticas, Universidad Complutense de Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain.,Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Isabel Izquierdo-Barba
- Departamento de Química en Ciencias Farmacéuticas, Universidad Complutense de Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain.,Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Valentina Cauda
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy
| | - Maria Vallet-Regì
- Departamento de Química en Ciencias Farmacéuticas, Universidad Complutense de Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain.,Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| |
Collapse
|
8
|
Singh A, Dubey AK. Various Biomaterials and Techniques for Improving Antibacterial Response. ACS APPLIED BIO MATERIALS 2018. [DOI: 10.1021/acsabm.8b00033] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Angaraj Singh
- Department of Ceramic Engineering, Indian Institute of Technology (BHU), Varanasi-221005, Uttar Pradesh, India
| | - Ashutosh Kumar Dubey
- Department of Ceramic Engineering, Indian Institute of Technology (BHU), Varanasi-221005, Uttar Pradesh, India
| |
Collapse
|
9
|
Piccirillo C, L Castro PM. Calcium hydroxyapatite-based photocatalysts for environment remediation: Characteristics, performances and future perspectives. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2017; 193:79-91. [PMID: 28189932 DOI: 10.1016/j.jenvman.2017.01.071] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 01/28/2017] [Indexed: 06/06/2023]
Abstract
Calcium hydroxyapatite Ca10(PO4)6(OH)2 (HAp) is a material widely used in biomedicine, for bone implants manufacture, due to its biocompatibility. HAp has also application for environmental remediation, as it can be employed as metal removal; moreover, it has the capability of effectively adsorbing organic molecules its surface. In recent years, the photocatalytic properties of HAp have been investigated; indeed several studies report of HAp used as photocatalyst, either on its own or combined with other photocatalytic materials. Although in the majority of cases the activity was induced by UV light, some reports of visible light-activated materials were reported. Here we present a critical review of the latest developments for HAp-based photocatalysts; the materials discussed are undoped single phase HAp, doped HAp and HAp-containing composites. For undoped single phase HAp, the possible surface treatment and lattice defects which can lead to a photoactive material are discussed. Considering doped HAp, the use of Ti4+ (the most common dopant) is described, with particular attention to the effects that this metal have on the characteristics of the material (i.e. crystallinity) and on its photocatalytic behaviour. The use of other dopants is also discussed. For the multiphasic materials, the combination of HAp with other photocatalysts is discussed, mainly but not only with titanium dioxide TiO2. Overall, HAp is a compound with high potential as photocatalyst; this property, combined with its capability for heavy metal removal, makes it a multifunctional material for environmental remediation. As future perspectives, further studies, based on the results obtained until present, should be performed, to improve the performance of the materials and/or shift the band gap into the visible. The use of other dopants and/or the combination with other photocatalysts, for instance, are features which is worth exploring.
Collapse
Affiliation(s)
- C Piccirillo
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior Biotecnologia, Porto, Portugal.
| | - P M L Castro
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior Biotecnologia, Porto, Portugal
| |
Collapse
|
10
|
Gomes LC, Mergulhão FJ. SEM Analysis of Surface Impact on Biofilm Antibiotic Treatment. SCANNING 2017; 2017:2960194. [PMID: 29109808 PMCID: PMC5662067 DOI: 10.1155/2017/2960194] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Revised: 10/17/2016] [Accepted: 11/07/2016] [Indexed: 06/01/2023]
Abstract
The aim of this work was to use scanning electron microscopy (SEM) to investigate the effect of ampicillin treatment on Escherichia coli biofilms formed on two surface materials with different properties, silicone (SIL) and glass (GLA). Epifluorescence microscopy (EM) was initially used to assess biofilm formation and killing efficiency on both surfaces. This technique showed that higher bacterial colonization was obtained in the hydrophobic SIL than in the hydrophilic GLA. It has also shown that higher biofilm inactivation was attained for GLA after the antibiotic treatment (7-log reduction versus 1-log reduction for SIL). Due to its high resolution and magnification, SEM enabled a more detailed analysis of the antibiotic effect on biofilm cells, complementing the killing efficiency information obtained by EM. SEM micrographs revealed that ampicillin-treated cells have an elongated form when compared to untreated cells. Additionally, it has shown that different materials induced different levels of elongation on cells exposed to antibiotic. Biofilms formed on GLA showed a 37% higher elongation than those formed on SIL. Importantly, cell elongation was related to viability since ampicillin had a higher bactericidal effect on GLA-formed biofilms. These findings raise the possibility of using SEM for understanding the efficacy of antimicrobial treatments by observation of biofilm morphology.
Collapse
Affiliation(s)
- Luciana Calheiros Gomes
- LEPABE, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Porto, Portugal
| | - Filipe José Mergulhão
- LEPABE, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Porto, Portugal
| |
Collapse
|
11
|
Barros J, Grenho L, Fontenente S, Manuel CM, Nunes OC, Melo LF, Monteiro FJ, Ferraz MP. Staphylococcus aureusandEscherichia colidual-species biofilms on nanohydroxyapatite loaded with CHX or ZnO nanoparticles. J Biomed Mater Res A 2016; 105:491-497. [DOI: 10.1002/jbm.a.35925] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 09/14/2016] [Accepted: 10/03/2016] [Indexed: 12/18/2022]
Affiliation(s)
- Joana Barros
- FEUP - Faculdade de Engenharia, Departamento de Engenharia Metalúrgica e Materiais; Universidade do Porto; Portugal
- i3S - Instituto de Investigação e Inovação em Saúde; Universidade do Porto; Portugal
- INEB - Instituto de Engenharia Biomédica; Universidade do Porto; Portugal
| | - Liliana Grenho
- FEUP - Faculdade de Engenharia, Departamento de Engenharia Metalúrgica e Materiais; Universidade do Porto; Portugal
- i3S - Instituto de Investigação e Inovação em Saúde; Universidade do Porto; Portugal
- INEB - Instituto de Engenharia Biomédica; Universidade do Porto; Portugal
| | - Sílvia Fontenente
- i3S - Instituto de Investigação e Inovação em Saúde; Universidade do Porto; Portugal
- IPATIMUP - Institute of Molecular Pathology and Immunology of the University of Porto; Portugal
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Departamento de Engenharia Química; Universidade do Porto; Portugal
| | - Cândida M. Manuel
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Departamento de Engenharia Química; Universidade do Porto; Portugal
- ULP-Universidade Lusófona do Porto; Portugal
| | - Olga C. Nunes
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Departamento de Engenharia Química; Universidade do Porto; Portugal
| | - Luís F. Melo
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Departamento de Engenharia Química; Universidade do Porto; Portugal
| | - Fernando J. Monteiro
- FEUP - Faculdade de Engenharia, Departamento de Engenharia Metalúrgica e Materiais; Universidade do Porto; Portugal
- i3S - Instituto de Investigação e Inovação em Saúde; Universidade do Porto; Portugal
- INEB - Instituto de Engenharia Biomédica; Universidade do Porto; Portugal
| | - Maria P. Ferraz
- FP-ENAS/CEBIMED; University Fernando Pessoa Energy, Environment and Health Research Unit/Biomedical Research Center; Porto Portugal
| |
Collapse
|
12
|
Hu J, Zhong Z, Zhang F, Xing W, Jin W, Xu N. High-efficiency, Synergistic ZnO-Coated SiC Photocatalytic Filter with Antibacterial Properties. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b00988] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jian Hu
- State Key
Laboratory of Materials-Oriented
Chemical Engineering, National Engineering Research Center for Specialized
Separation Membranes Nanjing Tech University (former Nanjing University of Technology), Nanjing, Jiangsu 210009, China
| | - Zhaoxiang Zhong
- State Key
Laboratory of Materials-Oriented
Chemical Engineering, National Engineering Research Center for Specialized
Separation Membranes Nanjing Tech University (former Nanjing University of Technology), Nanjing, Jiangsu 210009, China
| | - Feng Zhang
- State Key
Laboratory of Materials-Oriented
Chemical Engineering, National Engineering Research Center for Specialized
Separation Membranes Nanjing Tech University (former Nanjing University of Technology), Nanjing, Jiangsu 210009, China
| | - Weihong Xing
- State Key
Laboratory of Materials-Oriented
Chemical Engineering, National Engineering Research Center for Specialized
Separation Membranes Nanjing Tech University (former Nanjing University of Technology), Nanjing, Jiangsu 210009, China
| | - Wanqin Jin
- State Key
Laboratory of Materials-Oriented
Chemical Engineering, National Engineering Research Center for Specialized
Separation Membranes Nanjing Tech University (former Nanjing University of Technology), Nanjing, Jiangsu 210009, China
| | - Nanping Xu
- State Key
Laboratory of Materials-Oriented
Chemical Engineering, National Engineering Research Center for Specialized
Separation Membranes Nanjing Tech University (former Nanjing University of Technology), Nanjing, Jiangsu 210009, China
| |
Collapse
|
13
|
Grenho L, Salgado CL, Fernandes MH, Monteiro FJ, Ferraz MP. Antibacterial activity and biocompatibility of three-dimensional nanostructured porous granules of hydroxyapatite and zinc oxide nanoparticles--an in vitro and in vivo study. NANOTECHNOLOGY 2015; 26:315101. [PMID: 26180062 DOI: 10.1088/0957-4484/26/31/315101] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Ceramic scaffolds are widely studied in the bone tissue engineering field due to their potential in regenerative medicine. However, adhesion of microorganisms on biomaterials with subsequent formation of antibiotic-resistant biofilms is a critical factor in implant-related infections. Therefore, new strategies are needed to address this problem. In the present study, three-dimensional and interconnected porous granules of nanostructured hydroxyapatite (nanoHA) incorporated with different amounts of zinc oxide (ZnO) nanoparticles were produced using a simple polymer sponge replication method. As in vitro experiments, granules were exposed to Staphylococcus aureus and Staphylococcus epidermidis and, after 24 h, the planktonic and sessile populations were assessed. Cytocompatibility towards osteoblast-like cells (MG63 cell line) was also evaluated for a period of 1 and 3 days, through resazurin assay and imaging flow cytometry analysis. As in vivo experiments, nanoHA porous granules with and without ZnO nanoparticles were implanted into the subcutaneous tissue in rats and their inflammatory response after 3, 7 and 30 days was examined, as well as their antibacterial activity after 1 and 3 days of S. aureus inoculation. The developed composites proved to be especially effective at reducing bacterial activity in vitro and in vivo for a weight percentage of 2% ZnO, with a low cell growth inhibition in vitro and no differences in the connective tissue growth and inflammatory response in vivo. Altogether, these results suggest that nanoHA-ZnO porous granules have a great potential to be used in orthopaedic and dental applications as a template for bone regeneration and, simultaneously, to restrain biomaterial-associated infections.
Collapse
Affiliation(s)
- L Grenho
- Faculdade de Engenharia, Departamento de Engenharia Metalúrgica e Materiais, Universidade do Porto, Rua Dr Roberto Frias, s/n 4200-465 Porto, Portugal. i3s-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Portugal. INEB-Instituto de Engenharia Biomédica, Universidade do Porto, Rua do Campo Alegre 823, 4150-180 Porto, Portugal
| | | | | | | | | |
Collapse
|
14
|
Liu C, Chan KW, Shen J, Wong HM, Kwok Yeung KW, Tjong SC. Melt-compounded polylactic acid composite hybrids with hydroxyapatite nanorods and silver nanoparticles: biodegradation, antibacterial ability, bioactivity and cytotoxicity. RSC Adv 2015. [DOI: 10.1039/c5ra14155a] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
PLA/18% nHA–2% Ag and PLA/18% nHA–6% Ag nanocomposites showing zone of inhibition againstE. coli.
Collapse
Affiliation(s)
- Chen Liu
- Department of Physics and Materials Science
- City University of Hong Kong
- Kowloon
- China
| | - Kai Wang Chan
- Department of Physics and Materials Science
- City University of Hong Kong
- Kowloon
- China
| | - Jie Shen
- Department of Orthopedics and Traumatology
- Li Ka Shing Faculty of Medicine
- The University of Hong Kong
- China
| | - Hoi Man Wong
- Department of Orthopedics and Traumatology
- Li Ka Shing Faculty of Medicine
- The University of Hong Kong
- China
| | - Kelvin Wai Kwok Yeung
- Department of Orthopedics and Traumatology
- Li Ka Shing Faculty of Medicine
- The University of Hong Kong
- China
| | - Sie Chin Tjong
- Department of Physics and Materials Science
- City University of Hong Kong
- Kowloon
- China
| |
Collapse
|