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Silva Lima Mendes DT, Leite Matos GR, Stwart de Araújo Souza SA, Souza Silva Macedo MC, Tavares DDS, Resende CX. Does the incorporation of zinc into TiO 2 on titanium surfaces increase bactericidal activity? A systematic review and meta-analysis. J Prosthet Dent 2024; 132:510-519. [PMID: 36270807 DOI: 10.1016/j.prosdent.2022.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 05/18/2022] [Accepted: 05/19/2022] [Indexed: 11/05/2022]
Abstract
STATEMENT OF PROBLEM Infections associated with bacterial biofilm formation are an important cause of early implant failure. With the growing number of antibiotic-resistant bacteria, the incorporation of zinc into TiO2 coatings of titanium implants has emerged to promote osseointegration and inhibit bacterial proliferation. However, a systematic assessment of its efficacy is lacking. PURPOSE The purpose of this systematic review and meta-analysis was to assess the bactericidal effect of zinc-modified TiO2 coatings on titanium or Ti-6Al-4V alloy. MATERIAL AND METHODS The review was structured based on the preferred reporting items for systematic reviews and meta-analyses (PRISMA) checklist and the peer review of electronic search strategies (PRESS) guidelines. The search was performed in Science Direct, SCOPUS, Web of Science, and PubMed databases, including experimental in vitro studies that used titanium or Ti-6Al-4V as a control group and performed bacterial assays. Meta-analysis was performed by using the standardized mean differences of antibacterial effects. RESULTS A total of 2519 articles were collected after duplicate removal. Then, eligibility criteria and a manual search were applied to select 20 studies for qualitative analysis and 16 studies for statistical analysis. The risk of bias revealed low-quality evidence. The meta-analysis showed that zinc positively affected the bactericidal activity of TiO2 coatings (-8.79, CI95%=-11.01 to -6.57, P<.001), with a high degree of heterogeneity (I2=78%). Subgroup analysis with TiO2 nanotubes produced by anodization and ZnO nanoparticles by hydrothermal synthesis reduced heterogeneity to 43%, with the removal of outliers (I2=46%), with a favorable antibacterial effect for zinc incorporation into TiO2. CONCLUSIONS Bactericidal activity was identified for zinc incorporated into TiO2 coatings, making it an interesting option for titanium dental implants.
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Affiliation(s)
- Douglas Thainan Silva Lima Mendes
- Postgraduate student, Post-graduate Program in Materials Science and Engineering, Federal University of Sergipe (UFS), São Cristóvão, Sergipe, Brazil
| | - Gusttavo Reis Leite Matos
- Postgraduate student, Post-graduate Program in Materials Science and Engineering, Federal University of Sergipe (UFS), São Cristóvão, Sergipe, Brazil
| | | | | | - Débora Dos Santos Tavares
- Adjunct Professor, Department of Health Education, Federal University of Sergipe (UFS), Lagarto, Sergipe, Brazil
| | - Cristiane Xavier Resende
- Adjunct Professor, Department of Materials Science and Engineering, Federal University of Sergipe (UFS), São Cristóvão, Sergipe, Brazil.
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Tian J, Dong X, Sabola EE, Wang Y, Chen K, Zhu M, Dai B, Zhang S, Guo F, Shi K, Chi J, Xu P. Sequential Regulation of Local Reactive Oxygen Species by Ir@Cu/Zn-MOF Nanoparticles for Promoting Infected Wound Healing. ACS Biomater Sci Eng 2024; 10:3792-3805. [PMID: 38814749 DOI: 10.1021/acsbiomaterials.4c00261] [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: 06/01/2024]
Abstract
Most antimicrobials treat wound infections by an oxidation effect, which is induced by the generation of reactive oxygen species (ROS). However, the potential harm of the prolonged high level of ROS should not be ignored. In this study, we presented a novel cascade-reaction nanoparticle, Ir@Cu/Zn-MOF, to effectively regulate the ROS level throughout the healing progress of the infected wound. The nanoparticles consisted of a copper/zinc-modified metal-organic framework (Cu/Zn-MOF) serving as the external structure and an inner core composed of Ir-PVP NPs, which were achieved through a process known as "bionic mineralization". The released Cu2+ and Zn2+ from the shell structure contributed to the production of ROS, which acted as antimicrobial agents during the initial stage. With the disintegration of the shell, the Ir-PVP NP core was gradually released, exhibiting the property of multiple antioxidant enzyme activities, thereby playing an important role in clearing excessive ROS and alleviating oxidative stress. In a full-layer infected rat wound model, Ir@Cu/Zn-MOF nanoparticles presented exciting performance in promoting wound healing by clearing the bacteria and accelerating neovascularization as well as collagen deposition. This study provided a promising alternative for the repair of infected wounds.
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Affiliation(s)
- Jinrong Tian
- Translational Medicine Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, China
- The Center of Wound Healing and Regeneration, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, China
| | - Xing Dong
- Translational Medicine Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, China
- The Center of Wound Healing and Regeneration, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, China
| | - Eluby Esmie Sabola
- Translational Medicine Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, China
| | - Yuqi Wang
- Translational Medicine Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, China
- Cixi Biomedical Research Institute, Wenzhou Medical University, Wenzhou Zhejiang 325035, China
| | - Kai Chen
- Translational Medicine Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, China
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325025, China
| | - Meng Zhu
- Translational Medicine Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, China
| | - Bichun Dai
- Translational Medicine Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, China
- The Center of Wound Healing and Regeneration, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, China
| | - Shanshan Zhang
- Translational Medicine Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, China
- The Center of Wound Healing and Regeneration, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, China
| | - Feixia Guo
- Translational Medicine Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, China
- The Center of Wound Healing and Regeneration, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, China
| | - Keqing Shi
- Translational Medicine Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, China
- The Center of Wound Healing and Regeneration, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, China
- Cixi Biomedical Research Institute, Wenzhou Medical University, Wenzhou Zhejiang 325035, China
| | - Junjie Chi
- Translational Medicine Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, China
- The Center of Wound Healing and Regeneration, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, China
| | - Pingwei Xu
- Translational Medicine Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, China
- The Center of Wound Healing and Regeneration, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, China
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do Amaral GCLS, Hassan MA, Saraiva L, Nakao LYS, Holzhausen M, Malheiros ZM, Stewart B, Romito GA, Villar CC. The effect of a multicomponent oral care regimen on gingival inflammation: A randomized controlled clinical trial. J Periodontol 2024; 95:350-359. [PMID: 37794683 DOI: 10.1002/jper.23-0361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/24/2023] [Accepted: 08/25/2023] [Indexed: 10/06/2023]
Abstract
BACKGROUND Oral care regimens can be explored to improve oral health in patients with gingivitis. This study aimed to evaluate the efficacy of a multicomponent oral care regimen with a dual zinc plus arginine (DZA) toothpaste and cetylpyridinium chloride with zinc lactate (CPC + Zn) mouthwash in reducing gingival bleeding in patients with gingivitis. METHODS This randomized clinical trial included 94 participants with gingivitis who were randomized into two groups: the DZA/CPC + Zn group, which used a 1450-ppm fluoride toothpaste containing 0.96% zinc plus 1.5% arginine and a fluoride-containing mouthwash with 0.075% CPC and 0.28% zinc lactate, and the control group, which used a 1450-ppm fluoride toothpaste and a placebo mouthwash for 6 months. All participants were examined by a blinded examiner who measured the gingival index, plaque index, and gingival severity index. Data were analyzed using paired t test, independent t test, and analysis of covariance (ANCOVA). RESULTS Both groups presented statistically significant reductions in all clinical parameters compared to baseline. The DZA/CPC + Zn group exhibited significantly greater reductions in gingival index, gingival severity index, proximal gingival index, plaque index and proximal plaque index compared to the control group at 1, 3, and 6 months. Furthermore, DZA/CPC + Zn significantly decreased the percentage of patients with generalized gingivitis over a 6-month follow-up period. However, differences between the DZA/CPC + Zn and the control groups were not maintained after both groups established similar regimens with fluoride toothpaste. CONCLUSION The multicomponent oral care regimen consisting of DZA toothpaste and CPC + Zn mouthwash is effective in reducing gingival inflammation and supragingival biofilm in patients with gingivitis.
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Affiliation(s)
| | - Mohamed A Hassan
- Discipline of Periodontics, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Luciana Saraiva
- Discipline of Periodontics, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Laís Y S Nakao
- Discipline of Periodontics, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Marinella Holzhausen
- Discipline of Periodontics, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | | | | | - Giuseppe A Romito
- Discipline of Periodontics, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Cristina C Villar
- Discipline of Periodontics, School of Dentistry, University of São Paulo, São Paulo, Brazil
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Chen Z, Xing F, Yu P, Zhou Y, Luo R, Liu M, Ritz U. Metal-organic framework-based advanced therapeutic tools for antimicrobial applications. Acta Biomater 2024; 175:27-54. [PMID: 38110135 DOI: 10.1016/j.actbio.2023.12.023] [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] [Received: 09/20/2023] [Revised: 11/20/2023] [Accepted: 12/13/2023] [Indexed: 12/20/2023]
Abstract
The escalating concern over conventional antibiotic resistance has emphasized the urgency in developing innovative antimicrobial agents. In recent times, metal-organic frameworks (MOFs) have garnered significant attention within the realm of antimicrobial research due to their multifaceted antimicrobial attributes, including the sustained release of intrinsic or exogenous antimicrobial components, chemodynamically catalyzed generation of reactive oxygen species (ROS), and formation of photogenerated ROS. This comprehensive review provides a thorough overview of the synthetic approaches employed in the production of MOF-based materials, elucidating their underlying antimicrobial mechanisms in depth. The focal point lies in elucidating the research advancements across various antimicrobial modalities, encompassing intrinsic component release system, extraneous component release system, auto-catalytical system, and energy conversion system. Additionally, the progress of MOF-based antimicrobial materials in addressing wound infections, osteomyelitis, and periodontitis is meticulously elucidated, culminating in a summary of the challenges and potential opportunities inherent within the realm of antimicrobial applications for MOF-based materials. STATEMENT OF SIGNIFICANCE: Growing concerns about conventional antibiotic resistance emphasized the need for alternative antimicrobial solutions. Metal-organic frameworks (MOFs) have gained significant attention in antimicrobial research due to their diverse attributes like sustained antimicrobial components release, catalytic generation of reactive oxygen species (ROS), and photogenerated ROS. This review covers MOF synthesis and their antimicrobial mechanisms. It explores advancements in intrinsic and extraneous component release, auto-catalysis, and energy conversion systems. The paper also discusses MOF-based materials' progress in addressing wound infections, osteomyelitis, and periodontitis, along with existing challenges and opportunities. Given the lack of related reviews, our findings hold promise for future MOF applications in antibacterial research, making it relevant to your journal's readership.
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Affiliation(s)
- Zhao Chen
- Department of Orthopedic Surgery, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Fei Xing
- Department of Orthopedic Surgery, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Peiyun Yu
- LIMES Institute, Department of Molecular Brain Physiology and Behavior, University of Bonn, Carl-Troll-Str. 31, 53115 Bonn, Germany
| | - Yuxi Zhou
- Department of Periodontology, Justus-Liebig-University of Giessen, Germany
| | - Rong Luo
- Department of Orthopedic Surgery, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Ming Liu
- Department of Orthopedic Surgery, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China.
| | - Ulrike Ritz
- Department of Orthopaedics and Traumatology, Biomatics Group, University Medical Center of the Johannes Gutenberg University, Langenbeckstr. 1, 55131 Mainz, Germany.
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Habib ML, Disha SA, Sahadat Hossain M, Uddin MN, Ahmed S. Enhancement of antimicrobial properties by metals doping in nano-crystalline hydroxyapatite for efficient biomedical applications. Heliyon 2024; 10:e23845. [PMID: 38192860 PMCID: PMC10772636 DOI: 10.1016/j.heliyon.2023.e23845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 12/01/2023] [Accepted: 12/13/2023] [Indexed: 01/10/2024] Open
Abstract
In this study, we have introduced a method for the synthesis of various metal-doped nano-crystalline hydroxyapatites (HAp) using a standard wet chemical precipitation technique. Both divalent (Ni and Zn) and trivalent (Al and Fe) metals were selected for the doping process. Additional research work was also conducted to assess the antimicrobial efficacy of these doped-HAps against a range of gram-positive and gram-negative microorganisms. All the synthesized metal-doped hydroxyapatite (HAp) exhibited notable antibacterial characteristics against gram-negative bacterial strains, namely Escherichia coli (E. coli) and Salmonella typhi (S. typhi), outperforming the pure HAp. The inhibition zone observed for the metal-doped HAp ranged from 14 to 16 mm. The Fe ion displayed a notable inhibitory zone measuring 16 mm, proving to be the most expansive among all tested ions against both E. coli and S. typhi bacterial strains. The Zn-HAp exhibited a comparable inhibitory zone size of 14 mm against both S. typhi and E. coli. Additional characterization methods, such as X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, and Scanning electron microscopy (SEM), were used to validate the structural properties of the synthesized metal-doped hydroxyapatite (HAp) samples. The biocompatibility assessment of metal-doped hydroxyapatite (HAp) samples was carried out by haemolysis tests, which revealed that all synthesized hydroxyapatite (HAp) samples have the potential to serve as reliable biomaterials.
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Affiliation(s)
- Md. Lawshan Habib
- Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj-8100, Bangladesh
| | - Sanjana Afrin Disha
- Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj-8100, Bangladesh
- Institute of Glass and Ceramic Research and Testing, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhanmondi, Dhaka-1205, Bangladesh
| | - Md. Sahadat Hossain
- Institute of Glass and Ceramic Research and Testing, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhanmondi, Dhaka-1205, Bangladesh
| | - Md. Najem Uddin
- BCSIR Dhaka Laboratories, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka-1205, Bangladesh
| | - Samina Ahmed
- Institute of Glass and Ceramic Research and Testing, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhanmondi, Dhaka-1205, Bangladesh
- BCSIR Dhaka Laboratories, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka-1205, Bangladesh
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Jayanetti M, Thambiliyagodage C, Liyanaarachchi H, Ekanayake G, Mendis A, Usgodaarachchi L. In vitro influence of PEG functionalized ZnO-CuO nanocomposites on bacterial growth. Sci Rep 2024; 14:1293. [PMID: 38221550 PMCID: PMC10788344 DOI: 10.1038/s41598-024-52014-6] [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] [Received: 09/22/2023] [Accepted: 01/12/2024] [Indexed: 01/16/2024] Open
Abstract
Polyethyleneglycol-coated biocompatible CuO-ZnO nanocomposites were fabricated hydrothermally varying Zn:Cu ratios as 1:1, 2:1, and 1:2, and their antibacterial activity was determined through the well diffusion method against the Gram-negative Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, and the Gram-positive Staphylococcus aureus. The minimum inhibitory concentration and the minimum bactericidal concentration values of the synthesized samples were determined. Subsequently, the time synergy kill assay was performed to elucidate the nature of the overall inhibitory effect against the aforementioned bacterial species. The mean zone of inhibition values for all four samples are presented. The inhibitory effect increased with increasing concentration of the nanocomposite (20, 40 and 60 mg/ml) on all the bacterial species except for S. aureus. According to the MBC/MIC ratio, ZnO was found to be bacteriostatic for E. coli and P. aeruginosa, and bactericidal for S. aureus and K. pneumoniae. Zn:Cu 2:1 was bactericidal on all bacterial species. A bacteriostatic effect was observed on E. coli and P. aeruginosa in the presence of Zn:Cu 1:1 whereas, it showed a bactericidal effect on S. aureus and K. pneumoniae. Zn:Cu 1:2 exhibited a bacteriostatic effect on E. coli while a bactericidal effect was observed for E. coli, P. aeruginosa, and K. pneumoniae. The metal oxide nanocomposites were found to be more sensitive towards the Gram-positive strain than the Gram-negative strains. Further, all the nanocomposites possess anti-oxidant activity as shown by the DPPH assay.
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Affiliation(s)
- Madara Jayanetti
- Faculty of Humanities and Sciences, Sri Lanka Institute of Information Technology, New Kandy Road, Malabe, Sri Lanka
| | - Charitha Thambiliyagodage
- Faculty of Humanities and Sciences, Sri Lanka Institute of Information Technology, New Kandy Road, Malabe, Sri Lanka.
| | - Heshan Liyanaarachchi
- Faculty of Humanities and Sciences, Sri Lanka Institute of Information Technology, New Kandy Road, Malabe, Sri Lanka
| | - Geethma Ekanayake
- Faculty of Humanities and Sciences, Sri Lanka Institute of Information Technology, New Kandy Road, Malabe, Sri Lanka
| | - Amavin Mendis
- Faculty of Humanities and Sciences, Sri Lanka Institute of Information Technology, New Kandy Road, Malabe, Sri Lanka
| | - Leshan Usgodaarachchi
- Faculty of Humanities and Sciences, Sri Lanka Institute of Information Technology, New Kandy Road, Malabe, Sri Lanka
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Kitagawa H, Kohno T, Deng F, Abe GL, Sakai H, Fan YS, Wu T, Sasaki JI, Imazato S. Metal-doped silicate and phosphate glasses for antibacterial dental biomaterials. Biomater Investig Dent 2023; 10:2284372. [PMID: 38979099 PMCID: PMC11229677 DOI: 10.1080/26415275.2023.2284372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 11/10/2023] [Indexed: 07/10/2024] Open
Abstract
Owing to the development of glass 45S5 (Bioglass®) comprising 45 mol% SiO2, 24.5 mol% Na2O, 24.5 mol% CaO, and 6 mol% P2O5, different compositions of silicate glasses have been developed. When these silicate glasses contact an aqueous environment, such as body fluids, they induce apatite layer formation on their surfaces owing to ion exchange. In addition to promoting hard tissue formation, researchers have sought to enhance the antibacterial properties of these glasses, thereby resulting in the development of metal-doped silicate glasses. The addition of antibacterial metals (silver, copper, zinc, and gallium) to silicate glass offers a promising avenue for combating oral pathogens. In recent years, there has been growing interest in metal-doped phosphate glasses. The release of metal ions can be regulated by modifying the dissolution rate of the phosphate glasses. This review summarizes the metal-doped silicate and phosphate glasses that confer antibacterial activity. Future strategies for the development of dental biomaterials that incorporate metal-doped glass and exhibit antibacterial effects are discussed.
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Affiliation(s)
- Haruaki Kitagawa
- Department of Dental Biomaterials, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, Suita, Osaka, Japan
- Joint Research Laboratory of Advanced Functional Materials Science, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, Suita, Osaka, Japan
| | - Tomoki Kohno
- Joint Research Laboratory of Advanced Functional Materials Science, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, Suita, Osaka, Japan
| | - Fan Deng
- Department of Dental Biomaterials, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, Suita, Osaka, Japan
| | - Gabriela L Abe
- Joint Research Laboratory of Advanced Functional Materials Science, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, Suita, Osaka, Japan
| | - Hirohiko Sakai
- Department of Dental Biomaterials, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, Suita, Osaka, Japan
| | - Yo-Shiuan Fan
- Department of Dental Biomaterials, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, Suita, Osaka, Japan
| | - Tingyi Wu
- Department of Dental Biomaterials, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, Suita, Osaka, Japan
| | - Jun-ichi Sasaki
- Department of Dental Biomaterials, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, Suita, Osaka, Japan
| | - Satoshi Imazato
- Department of Dental Biomaterials, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, Suita, Osaka, Japan
- Joint Research Laboratory of Advanced Functional Materials Science, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, Suita, Osaka, Japan
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Almoudi MM, Hussein AS, Mohd Sarmin NI, Abu Hassan MI. Antibacterial effectiveness of different zinc salts on Streptococcus mutans and Streptococcus sobrinus: An in-vitro study. Saudi Dent J 2023; 35:883-890. [PMID: 38025600 PMCID: PMC10658393 DOI: 10.1016/j.sdentj.2023.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 06/18/2023] [Accepted: 07/02/2023] [Indexed: 12/01/2023] Open
Abstract
Objectives This in-vitro study aimed to evaluate the antibacterial effects of four zinc salts namely zinc chloride, zinc sulfate, zinc citrate and zinc acetate against Streptococcus mutans (S. mutans) and Streptococcus sobrinus (S. sobrinus). Methods Antibacterial susceptibility assay, minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were undertaken to evaluate the inhibitory activities of different zinc salts against the tested bacteria. A scanning electron microscope (SEM) was used to evaluate the morphological changes of bacterial cells following exposure to zinc salts. Kruskal-Wallis and Mann-Whitney tests were used to compare the inhibitory effect of the different zinc salts. Results All zinc salts tested against S. mutans and S. sobrinus had a statistically and significantly smaller inhibition zone when compared to chlorhexidine, (P < 0.001). However, zinc chloride had the largest inhibition zone (20 mm ± 5.5) against S. sobrinus, which was comparable to chlorhexidine (22 mm ± 4) (P > 0.05). Zinc chloride, zinc sulfate and zinc acetate demonstrated higher MIC and MBC values against S. mutans compared to S. sobrinus. However, zinc citrate revealed the highest MIC and MBC values of 1 mg/mL and > 8 mg/mL for S. sobrinus and > 8 mg/mL for S. mutans, respectively. Conclusion Different zinc salts have displayed inhibitory growth effects against the common oral bacteria at very low concentrations except for zinc citrate which showed no inhibitory effect against these bacteria in vitro.
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Affiliation(s)
- Manal Mohamed Almoudi
- Centre of Paediatric and Preventive Dentistry, Faculty of Dentistry, AL Zawiah University, AL Zawiah, Libya
| | - Alaa Sabah Hussein
- Centre of Paediatric Dentistry and Orthodontics Studies, Faculty of Dentistry, Universiti Teknologi MARA, Selangor, Malaysia
| | - Nurul Izzah Mohd Sarmin
- Centre of PreClinical Science Studies, Faculty of Dentistry, Universiti Teknologi MARA, Selangor, Malaysia
| | - Mohamed Ibrahim Abu Hassan
- Centre of Restorative Dentistry Studies, Faculty of Dentistry, Universiti Teknologi MARA, Selangor, Malaysia
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Yu YC, Hu MH, Zhuang HZ, Phan THM, Jiang YS, Jan JS. Antibacterial Gelatin Composite Hydrogels Comprised of In Situ Formed Zinc Oxide Nanoparticles. Polymers (Basel) 2023; 15:3978. [PMID: 37836027 PMCID: PMC10575203 DOI: 10.3390/polym15193978] [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: 09/12/2023] [Revised: 09/27/2023] [Accepted: 09/28/2023] [Indexed: 10/15/2023] Open
Abstract
We report the feasibility of using gelatin hydrogel networks as the host for the in situ, environmentally friendly formation of well-dispersed zinc oxide nanoparticles (ZnONPs) and the evaluation of the antibacterial activity of the as-prepared composite hydrogels. The resulting composite hydrogels displayed remarkable biocompatibility and antibacterial activity as compared to those in previous studies, primarily attributed to the uniform distribution of the ZnONPs with sizes smaller than 15 nm within the hydrogel network. In addition, the composite hydrogels exhibited better thermal stability and mechanical properties as well as lower swelling ratios compared to the unloaded counterpart, which could be attributed to the non-covalent interactions between the in situ formed ZnONPs and polypeptide chains. The presence of ZnONPs contributed to the disruption of bacterial cell membranes, the alteration of DNA molecules, and the subsequent release of reactive oxygen species within the bacterial cells. This chain of events culminated in bacterial cell lysis and DNA fragmentation. This research underscores the potential benefits of incorporating antibacterial agents into hydrogels and highlights the significance of preparing antimicrobial agents within gel networks.
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Affiliation(s)
- Ya-Chu Yu
- Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan; (Y.-C.Y.); (H.-Z.Z.); (T.H.M.P.); (Y.-S.J.)
| | - Ming-Hsien Hu
- Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing University, Taichung 402, Taiwan;
- Orthopedic Department, Showchwan Memorial Hospital, Changhua 500, Taiwan
| | - Hui-Zhong Zhuang
- Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan; (Y.-C.Y.); (H.-Z.Z.); (T.H.M.P.); (Y.-S.J.)
| | - Thi Ha My Phan
- Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan; (Y.-C.Y.); (H.-Z.Z.); (T.H.M.P.); (Y.-S.J.)
| | - Yi-Sheng Jiang
- Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan; (Y.-C.Y.); (H.-Z.Z.); (T.H.M.P.); (Y.-S.J.)
| | - Jeng-Shiung Jan
- Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan; (Y.-C.Y.); (H.-Z.Z.); (T.H.M.P.); (Y.-S.J.)
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Li J, Yan Y, Chen Y, Fang Q, Hussain MI, Wang LN. Flexible Curcumin-Loaded Zn-MOF Hydrogel for Long-Term Drug Release and Antibacterial Activities. Int J Mol Sci 2023; 24:11439. [PMID: 37511198 PMCID: PMC10380506 DOI: 10.3390/ijms241411439] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 07/11/2023] [Accepted: 07/12/2023] [Indexed: 07/30/2023] Open
Abstract
Management of chronic inflammation and wounds has always been a key issue in the pharmaceutical and healthcare sectors. Curcumin (CCM) is an active ingredient extracted from turmeric rhizomes with antioxidant, anti-inflammatory, and antibacterial activities, thus showing significant effectiveness toward wound healing. However, its shortcomings, such as poor water solubility, poor chemical stability, and fast metabolic rate, limit its bioavailability and long-term use. In this context, hydrogels appear to be a versatile matrix for carrying and stabilizing drugs due to their biomimetic structure, soft porous microarchitecture, and favorable biomechanical properties. The drug loading/releasing efficiencies can also be controlled via using highly crystalline and porous metal-organic frameworks (MOFs). Herein, a flexible hydrogel composed of a sodium alginate (SA) matrix and CCM-loaded MOFs was constructed for long-term drug release and antibacterial activity. The morphology and physicochemical properties of composite hydrogels were analyzed by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), ultraviolet-visible spectroscopy (UV-Vis), Raman spectroscopy, and mechanical property tests. The results showed that the composite hydrogel was highly twistable and bendable to comply with human skin mechanically. The as-prepared hydrogel could capture efficient CCM for slow drug release and effectively kill bacteria. Therefore, such composite hydrogel is expected to provide a new management system for chronic wound dressings.
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Affiliation(s)
- Jiaxin Li
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yachao Yan
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yingzhi Chen
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
- School of Shunde Graduate, University of Science and Technology Beijing, Foshan 528399, China
| | - Qinglin Fang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Muhammad Irfan Hussain
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Lu-Ning Wang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
- School of Shunde Graduate, University of Science and Technology Beijing, Foshan 528399, China
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Majumder A, Sarkar C, Das I, Sk S, Bandyopadhyay S, Mandal S, Bera M. Design, Synthesis and Evaluation of a Series of Zinc(II) Complexes of Anthracene-Affixed Multifunctional Organic Assembly as Potential Antibacterial and Antibiofilm Agents against Methicillin-Resistant Staphylococcus aureus. ACS APPLIED MATERIALS & INTERFACES 2023; 15:22781-22804. [PMID: 37129921 DOI: 10.1021/acsami.2c21899] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
A novel class of zinc(II)-based metal complexes, i.e., [Zn2(acdp)(μ-Cl)]·2H2O (1), [Zn2(acdp)(μ-NO3)]·2H2O (2), and [Zn2(acdp)(μ-O2CCF3)]·2H2O (3) (Cl- = chloride; NO3- = nitrate; CF3CO2- = trifluoroacetate) of anthracene-affixed multifunctional organic assembly, H3acdp (H3acdp = N,N'-bis[anthracene-2-ylmethyl]-N,N'-bis[carboxymethyl]-1,3-diaminopropan-2-ol), have emerged as promising antibacterial and antibiofilm agents in the domain of medicinal chemistry. Accordingly, complexes 1-3 were synthesized by utilizing H3acdp in combination with ZnCl2, Zn(NO3)2·6H2O, and Zn(CF3CO2)2·H2O respectively, in the presence of NaOH at ambient temperature. The complexation between H3acdp and Zn2+ was delineated by a combined approach of spectrophotometric and spectrofluorometric titration studies. The stoichiometry of acdp3-/Zn2+ in all three complexes is observed to be 1:2, as confirmed by spectrophotometric/spectrofluorometric titration data. Elemental analysis (C, H, N, Zn), molar conductance, FTIR, UV-vis, and thermoanalytical (TGA/DTA) data were effectively used to characterize these complexes. Besides, the structures of 1-3 were established by density functional theory (DFT) calculation using B3LYP/6-311G, specifying a self-assembled compact geometry with average Zn···Zn separation of 3.4629 Å. All three zinc complexes exhibited significantly high antibacterial and antibiofilm activity against methicillin-resistant Staphylococcus aureus (MRSA BAA1717). However, complex 1 showed a more recognizable activity than 2 and 3, with minimum inhibitory concentration (MIC) values of 200, 350, and 450 μg/mL, respectively. The antimicrobial activity was tested by employing the minimum inhibitory concentration (MIC) and time-kill assay. The crystal violet (CV) assay and microscopic study were performed to examine the antibiofilm activity. As observed, complexes 1-3 had an effect on the production of extracellular polymeric substance (EPS), biofilm cell-viability, and other virulence factors such as staphyloxanthin and hemolysin production, autoaggregation ability, and microbial cell-surface hydrophobicity. Reactive oxygen species (ROS) generated due to inhibition of staphyloxanthin production in response to 1-3 were also analyzed. Moreover, complexes 1-3 showed an ability to damage the bacterial cell membrane due to accumulation of ROS resulting in DNA leakage. In addition, complexes 1-3 displayed a synergistic/additive activity with a commercially available antibiotic drug, vancomycin, with enhanced antibacterial activity. On the whole, our investigation disclosed that complex 1 could be a promising drug lead and attract much attention to medicinal chemists compared to 2 and 3 from therapeutic aspects.
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Affiliation(s)
- Avishek Majumder
- Department of Chemistry, University of Kalyani, Kalyani, Nadia, West Bengal 741235, India
| | - Chandan Sarkar
- Department of Chemistry, University of Kalyani, Kalyani, Nadia, West Bengal 741235, India
| | - Indrajit Das
- Department of Microbiology, University of Kalyani, Kalyani, Nadia, West Bengal 741235, India
| | - Sujan Sk
- Department of Chemistry, University of Kalyani, Kalyani, Nadia, West Bengal 741235, India
| | - Shrabasti Bandyopadhyay
- Department of Microbiology, University of Kalyani, Kalyani, Nadia, West Bengal 741235, India
| | - Supratim Mandal
- Department of Microbiology, University of Kalyani, Kalyani, Nadia, West Bengal 741235, India
| | - Manindranath Bera
- Department of Chemistry, University of Kalyani, Kalyani, Nadia, West Bengal 741235, India
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Buzza KM, Pluen A, Doherty C, Cheesapcharoen T, Singh G, Ledder RG, Sreenivasan PK, McBain AJ. Modulation of Biofilm Formation and Permeability in Streptococcus mutans during Exposure To Zinc Acetate. Microbiol Spectr 2023; 11:e0252722. [PMID: 36809043 PMCID: PMC10100724 DOI: 10.1128/spectrum.02527-22] [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: 07/29/2022] [Accepted: 01/06/2023] [Indexed: 02/23/2023] Open
Abstract
The penetration of biofilms by antimicrobials is a potential limiting factor in biofilm control. This is relevant to oral health, as compounds that are used to control microbial growth and activities could also affect the permeability of dental plaque biofilm with secondary effects on biofilm tolerance. We investigated the effects of zinc salts on the permeability of Streptococcus mutans biofilms. Biofilms were grown with low concentrations of zinc acetate (ZA), and a transwell transportation assay was applied to test biofilm permeability in an apical-basolateral direction. Crystal violet assays and total viable counts were used to quantify the biofilm formation and viability, respectively, and short time frame diffusion rates within microcolonies were determined using spatial intensity distribution analysis (SpIDA). While the diffusion rates within biofilm microcolonies were not significantly altered, exposure to ZA significantly increased the overall permeability of S. mutans biofilms (P < 0.05) through decreased biofilm formation, particularly at concentrations above 0.3 mg/mL. Transport was significantly lower through biofilms grown in high sucrose conditions. IMPORTANCE Zinc salts are added to dentifrices to improve oral hygiene through the control of dental plaque. We describe a method for determining biofilm permeability and show a moderate inhibitory effect of zinc acetate on biofilm formation, and that this inhibitory effect is associated with increases in overall biofilm permeability.
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Affiliation(s)
- Kara M. Buzza
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Alain Pluen
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Christopher Doherty
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Tanaporn Cheesapcharoen
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Gurdeep Singh
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Ruth G. Ledder
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Prem K. Sreenivasan
- HITLAB, New York, New York, USA
- Department of Oral Biology, Rutgers School of Dental Medicine, Newark, New Jersey, USA
| | - Andrew J. McBain
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
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13
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Gloag ES, Khosravi Y, Masters JG, Wozniak DJ, Amorin Daep C, Stoodley P. A Combination of Zinc and Arginine Disrupt the Mechanical Integrity of Dental Biofilms. Microbiol Spectr 2023; 11:e0335122. [PMID: 36472465 PMCID: PMC9927089 DOI: 10.1128/spectrum.03351-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 11/18/2022] [Indexed: 12/12/2022] Open
Abstract
Mechanical cleaning remains the standard of care for maintaining oral hygiene. However, mechanical cleaning is often augmented with active therapeutics that further promote oral health. A dentifrice, consisting of the "Dual Zinc plus Arginine" (DZA) technology, was found to be effective at controlling bacteria using in vitro laboratory studies, translating to clinical efficacy to deliver plaque and gingivitis reduction benefits. Here, we used biophysical analyses and confocal laser scanning microscopy to understand how a DZA dentifrice impacted the mechanical properties of dental plaque biofilms and determine if changes to biofilm rheology enhanced the removal of dental plaque. Using both uniaxial mechanical indentation and an adapted rotating-disc rheometry assay, it was found that DZA treatment compromised biofilm mechanical integrity, resulting in the biofilm being more susceptible to removal by shear forces compared to treatment with either arginine or zinc alone. Confocal laser scanning microscopy revealed that DZA treatment reduced the amount of extracellular polymeric slime within the biofilm, likely accounting for the reduced mechanical properties. We propose a model where arginine facilitates the entry of zinc into the biofilm, resulting in additive effects of the two activities toward dental plaque biofilms. Together, our results support the use of a dentifrice containing Dual Zinc plus Arginine as part of daily oral hygiene regimens. IMPORTANCE Mechanical removal of dental plaque is augmented with therapeutic compounds to promote oral health. A dentifrice containing the ingredients zinc and arginine has shown efficacy at reducing dental plaque both in vitro and in vivo. However, how these active compounds interact together to facilitate dental plaque removal is unclear. Here, we used a combination of biophysical analyses and microscopy to demonstrate that combined treatment with zinc and arginine targets the matrix of dental plaque biofilms, which destabilized the mechanical integrity of these microbial communities, making them more susceptible to removal by shear forces.
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Affiliation(s)
- Erin S. Gloag
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, Ohio, USA
| | - Yalda Khosravi
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, Ohio, USA
| | - James G. Masters
- Colgate-Palmolive Technology Center, Piscataway, New Jersey, USA
| | - Daniel J. Wozniak
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, Ohio, USA
- Department of Microbiology, The Ohio State University, Columbus, Ohio, USA
| | | | - Paul Stoodley
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, Ohio, USA
- Department of Orthopaedics, The Ohio State University, Columbus, Ohio, USA
- National Biofilm Innovation Centre (NBIC), University of Southampton, Southampton, United Kingdom
- National Centre for Advanced Tribology at Southampton (nCATS), Mechanical Engineering, University of Southampton, Southampton, United Kingdom
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14
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Tabari M, Ziaei M, Alaghehmand H, Bijani A. Effects of incorporating zinc oxide and graphene oxide nanoparticles on abrasion, translucency, and microhardness of flowable composite resin: In vitro. Dent Res J (Isfahan) 2023. [DOI: 10.4103/1735-3327.367905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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15
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ZccE is a Novel P-type ATPase That Protects Streptococcus mutans Against Zinc Intoxication. PLoS Pathog 2022; 18:e1010477. [PMID: 35939512 PMCID: PMC9387928 DOI: 10.1371/journal.ppat.1010477] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 08/18/2022] [Accepted: 07/19/2022] [Indexed: 11/19/2022] Open
Abstract
Zinc is a trace metal that is essential to all forms of life, but that becomes toxic at high concentrations. Because it has both antimicrobial and anti-inflammatory properties and low toxicity to mammalian cells, zinc has been used as a therapeutic agent for centuries to treat a variety of infectious and non-infectious conditions. While the usefulness of zinc-based therapies in caries prevention is controversial, zinc is incorporated into toothpaste and mouthwash formulations to prevent gingivitis and halitosis. Despite this widespread use of zinc in oral healthcare, the mechanisms that allow Streptococcus mutans, a keystone pathogen in dental caries and prevalent etiological agent of infective endocarditis, to overcome zinc toxicity are largely unknown. Here, we discovered that S. mutans is inherently more tolerant to high zinc stress than all other species of streptococci tested, including commensal streptococci associated with oral health. Using a transcriptome approach, we uncovered several potential strategies utilized by S. mutans to overcome zinc toxicity. Among them, we identified a previously uncharacterized P-type ATPase transporter and cognate transcriptional regulator, which we named ZccE and ZccR respectively, as responsible for the remarkable high zinc tolerance of S. mutans. In addition to zinc, we found that ZccE, which was found to be unique to S. mutans strains, mediates tolerance to at least three additional metal ions, namely cadmium, cobalt, and copper. Loss of the ability to maintain zinc homeostasis when exposed to high zinc stress severely disturbed zinc:manganese ratios, leading to heightened peroxide sensitivity that was alleviated by manganese supplementation. Finally, we showed that the ability of the ΔzccE strain to stably colonize the rat tooth surface after topical zinc treatment was significantly impaired, providing proof of concept that ZccE and ZccR are suitable targets for the development of antimicrobial therapies specifically tailored to kill S. mutans. Dental caries is an overlooked infectious disease affecting more than 50% of the adult population. While several bacteria that reside in dental plaque have been associated with caries development and progression, Streptococcus mutans is deemed a keystone caries pathogen due to its capacity to modify the dental plaque environment in a way that is conducive with disease development. Zinc is an essential trace metal to life but toxic when encountered at high concentrations, to the point that it has been used as an antimicrobial for centuries. Despite the widespread use of zinc in oral healthcare products, little is known about the mechanisms utilized by oral bacteria to overcome its toxic effects. In this study, we discovered that S. mutans can tolerate exposure to much higher levels of zinc than closely related streptococcal species, including species that antagonize S. mutans and are associated with oral health. In this study, we identified a new metal transporter, named ZccE, as directly responsible for the inherently high zinc tolerance of S. mutans. Because ZccE is not present in other bacteria, our findings provide a new target for the development of a zinc-based therapy specifically tailored to kill S. mutans.
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16
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Abstract
Dental caries is a major lifestyle concern as dental components affect the face of an individual. The issue of tooth decay occurs in every age group throughout the globe. Researchers are probing incipient implements and techniques to develop filling agents for decayed teeth. Zinc oxide (ZnO) powder is utilized mostly as a filling agent. Nanotechnology enhanced the efficiency of compounds of metal oxides utilized for dental caries. The present study aims to investigate the properties of ZnO nanoparticles (NPs) synthesized chemically (using ZnCl2 and NaOH) as well as biologically (using aqueous leaf extract of Murraya paniculata). The XRD patterns confirm that ZnO NPs have a hexagonal crystalline structure with particle sizes of 47 nm and 55 nm for chemically and biologically synthesized NPs, respectively. The FE-SEM data confirm the nanorod and spherical/cubical shape morphologies for the chemically and biologically synthesized ZnO NPs, respectively. FTIR data show the peaks between 4000 and 450 cm−1 of the functional groups of –OH, C-O, –C-H-, and Zn-O bonds. The UV–Vis absorption study indicates a peak around 370 nm and a hump around 360 nm corresponding to the chemically and biologically synthesized ZnO NPs, respectively. An antibacterial bioassay was performed and compared with commercially available ZnO bulk powder against tooth decaying pathogens, viz., Streptococcus mutans, Staphylococcus aureus, E. coli, and Lactobacillus fermentum, and found that both ZnO NPs had results closer to those of the standard drug (rifampicin). Thus, the synthesized ZnO NPs may be utilized as nano-drugs for the application of tooth decaying filling agents. Even biologically synthesized ZnO NPs may be considered more environmentally friendly and less toxic to human health concerns.
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17
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Weller J, Vasudevan P, Kreikemeyer B, Ekat K, Jackszis M, Springer A, Chatzivasileiou K, Lang H. The role of bacterial corrosion on recolonization of titanium implant surfaces: An in vitro study. Clin Implant Dent Relat Res 2022; 24:664-675. [PMID: 35709098 DOI: 10.1111/cid.13114] [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: 12/13/2021] [Revised: 05/27/2022] [Accepted: 05/28/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND Inflammation triggered by bacterial biofilms in the surrounding tissue is a major etiological factor for peri-implantitis and subsequent implant failure. However, little is known about the direct effects of bacterial corrosion and recolonization on implant failure PURPOSE: To investigate the influence of oral commensals on bacterial corrosion and recolonization of titanium surfaces. MATERIALS AND METHODS Streptococcus sanguinis (S. sanguinis) and Porphyromonas gingivalis (P. gingivalis), which are key bacteria in oral biofilm formation, were cultured on commercially pure titanium and titanium-aluminum-vanadium (Ti6Al4V) plates in artificial saliva/brain heart infusion medium under aerobic or anaerobic conditions. Biofilm formation was examined after 7 and 21 days by crystal violet and live/dead staining. Titanium ions released into culture supernatants were analyzed over a period of 21 days by atomic absorption spectrometry. Visual changes in surface morphology were investigated using scanning electron microscopy. Biofilm formation on sterilized, biocorroded, and recolonized implant surfaces was determined by crystal violet staining. RESULTS S. sanguinis and P. gingivalis formed stable biofilms on the titanium samples. Bacterial corrosion led to a significant increase in titanium ion release from these titanium plates (p < 0.01), which was significantly higher under aerobic conditions on pure titanium (p ≤ 0.001). No obvious morphological surface changes, such as pitting and discoloration, were detected in the titanium samples. During early biofilm formation, the addition of titanium ions significantly decreased the number of live cells. In contrast, a significant effect on biofilm mass was only detected with P. gingivalis. Bacterial corrosion had no influence on bacterial recolonization following sterilization of titanium and Ti6Al4V surfaces. CONCLUSION Bacterial corrosion differs between oral commensal bacteria and leads to increased titanium ion release from titanium plates. The titanium ion release did not influence biofilm formation or bacterial recolonization under in vitro conditions.
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Affiliation(s)
- Julia Weller
- Department of Operative Dentistry and Periodontology, University Medical Center Rostock, Rostock, Germany
| | - Praveen Vasudevan
- Department of Operative Dentistry and Periodontology, University Medical Center Rostock, Rostock, Germany
| | - Bernd Kreikemeyer
- Institute of Medical Microbiology, Virology and Hygiene, University Medical Center Rostock, Rostock, Germany
| | - Katharina Ekat
- Institute of Medical Microbiology, Virology and Hygiene, University Medical Center Rostock, Rostock, Germany
| | - Mario Jackszis
- Biomechanics and Implant Technology Research Laboratory, Department of Orthopaedics, University Medical Center Rostock, Rostock, Germany
| | - Armin Springer
- Medical Biology and Electron Microscopy Centre, Medical Faculty, University of Rostock, Rostock, Germany
| | - Kyriaki Chatzivasileiou
- Department of Operative Dentistry and Periodontology, University Medical Center Rostock, Rostock, Germany
| | - Hermann Lang
- Department of Operative Dentistry and Periodontology, University Medical Center Rostock, Rostock, Germany
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Bunz O, Steegmann MC, Benz K, Testrich H, Quade A, Naumova EA, Arnold WH, Fricke K, Piwowarczyk A, Dittmar T. Human Gingival Fibroblast Adhesion and Proliferation on Hydroxyapatite-Coated Zirconia Abutment Surfaces. MATERIALS 2022; 15:ma15103625. [PMID: 35629651 PMCID: PMC9145355 DOI: 10.3390/ma15103625] [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] [Received: 02/11/2022] [Revised: 05/13/2022] [Accepted: 05/16/2022] [Indexed: 12/07/2022]
Abstract
Applying antibacterial coatings to dental implant materials seems reasonable but can have negative influences on desired cell adhesion and healing. In this study, zirconia abutment specimens interacting with gingival tissue were used. The aim was to compare the influence of machined or coated zirconia surfaces on the adhesion and proliferation of human gingival fibroblasts (HGF-1). Surface modifications were performed using atmospheric plasma coating with hydroxyapatite, zinc, and copper. Zirconia specimens were divided into four groups: hydroxyapatite, hydroxyapatite with zinc oxide (ZnO), hydroxyapatite with copper (Cu), and an untreated machined surface. After the characterization of the surface conditions, the morphology of adhered HGF-1 was determined by fluorescence staining and subjected to statistical evaluation. The visual analysis of cell morphology by SEM showed flat, polygonal, and largely adherent fibroblast cells in the untreated group, while round to partially flat cells were recorded in the groups with hydroxyapatite, hydroxyapatite + ZnO, and hydroxyapatite + Cu. The cell membranes in the hydroxyapatite + ZnO and hydroxyapatite + Cu groups appeared porous. The results show that HGF-1 adhere and proliferate well on machined zirconia, while plasma coating with hydroxyapatite or hydroxyapatite mixtures does not lead to increased adhesion or proliferation.
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Affiliation(s)
- Oskar Bunz
- Department of Prosthodontics, School of Dentistry, Faculty of Health, Witten/Herdecke University, 58455 Witten, Germany;
- Correspondence:
| | | | - Korbinian Benz
- Department of Oral Surgery and Dental Emergency Care, Faculty of Health, Witten/Herdecke University, 58455 Witten, Germany;
| | - Holger Testrich
- Research Group of Bioactive Surfaces, INP Greifswald e.V., 17489 Greifswald, Germany; (H.T.); (A.Q.); (K.F.)
| | - Antje Quade
- Research Group of Bioactive Surfaces, INP Greifswald e.V., 17489 Greifswald, Germany; (H.T.); (A.Q.); (K.F.)
| | - Ella A. Naumova
- Department of Biological and Material Sciences in Dentistry, School of Dentistry, Faculty of Health, Witten/Herdecke University, 58455 Witten, Germany; (E.A.N.); (W.H.A.)
| | - Wolfgang H. Arnold
- Department of Biological and Material Sciences in Dentistry, School of Dentistry, Faculty of Health, Witten/Herdecke University, 58455 Witten, Germany; (E.A.N.); (W.H.A.)
| | - Katja Fricke
- Research Group of Bioactive Surfaces, INP Greifswald e.V., 17489 Greifswald, Germany; (H.T.); (A.Q.); (K.F.)
| | - Andree Piwowarczyk
- Department of Prosthodontics, School of Dentistry, Faculty of Health, Witten/Herdecke University, 58455 Witten, Germany;
| | - Thomas Dittmar
- Institute of Immunology, Center for Biomedical Education and Research (ZBAF), Witten/Herdecke University, 58453 Witten, Germany;
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19
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Croft JM, Patel KV, Inui T, Ruparell A, Staunton R, Holcombe LJ. Effectiveness of oral care interventions on malodour in dogs. BMC Vet Res 2022; 18:164. [PMID: 35513817 PMCID: PMC9074277 DOI: 10.1186/s12917-022-03267-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 04/20/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Oral malodour is identified by pet owners as an unpleasant inconvenience, but they may not recognise this likely indicates underlying disease. The primary cause of oral malodour relates to the presence of bacteria in the oral cavity often associated with gingivitis and periodontitis. The purpose of this study was to determine the effect of feeding two oral care chews with different textural properties on oral malodour and the proportion of bacterial species involved in the production of volatile sulphur compounds (VSCs). METHODS Fourteen dogs (9 Petit Basset Griffon Vendéen (PBGV) and 5 Beagle dogs) participated in the randomised cross-over study for a total of 14 weeks. The cohort was divided into four groups with each exposed to a different intervention per week: chew A, chew B, tooth brushing control or a no intervention control. An induced malodour method was used to assess VSCs in breath samples using a portable gas chromatograph (OralChroma™). Microbiological samples (supragingival plaque and tongue coating scrapes) were analysed for VSC-producing bacteria using Oral Hydrogen Sulfide agar with lead acetate. RESULTS VSCs were detected in the dogs' breath samples and levels of hydrogen sulphide and methyl mercaptan were found to be reduced following an intervention. Chew B significantly reduced the levels of both hydrogen sulphide (p < 0.001) and methyl mercaptan (p < 0.05) compared to no intervention. Reductions in methyl mercaptan were also observed for chew A and tooth brushing but these were not statistically significant. When compared to no intervention, all interventions significantly reduced the total bacterial load and VSC producing bacterial load in plaque (p < 0.001). For tongue samples, only chew B significantly reduced the total bacterial load and VSC-producing bacterial load (p < 0.001) compared to no intervention. CONCLUSIONS By inducing oral malodour and subsequently applying the one-time interventions, significant reductions in the levels of VSCs were observed. The use of oral care chews texturally designed to deliver a deep, all-round cleaning action can be particularly effective at managing oral malodour in dogs, likely through an enhanced ability to remove bacteria.
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Affiliation(s)
- Julie M Croft
- Waltham Petcare Science Institute, Melton Mowbray, Leicestershire, LE14 4RT, UK.
| | - Krusha V Patel
- Waltham Petcare Science Institute, Melton Mowbray, Leicestershire, LE14 4RT, UK
| | - Taichi Inui
- Waltham Petcare Science Institute, Melton Mowbray, Leicestershire, LE14 4RT, UK
| | - Avika Ruparell
- Waltham Petcare Science Institute, Melton Mowbray, Leicestershire, LE14 4RT, UK
| | - Ruth Staunton
- Waltham Petcare Science Institute, Melton Mowbray, Leicestershire, LE14 4RT, UK
| | - Lucy J Holcombe
- Waltham Petcare Science Institute, Melton Mowbray, Leicestershire, LE14 4RT, UK
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20
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Amin F, Rahman S, Khurshid Z, Zafar MS, Sefat F, Kumar N. Effect of Nanostructures on the Properties of Glass Ionomer Dental Restoratives/Cements: A Comprehensive Narrative Review. MATERIALS (BASEL, SWITZERLAND) 2021; 14:6260. [PMID: 34771787 PMCID: PMC8584882 DOI: 10.3390/ma14216260] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 08/14/2021] [Accepted: 10/15/2021] [Indexed: 12/16/2022]
Abstract
Overall perspective of nanotechnology and reinforcement of dental biomaterials by nanoparticles has been reported in the literature. However, the literature regarding the reinforcement of dental biomaterials after incorporating various nanostructures is sparse. The present review addresses current developments of glass ionomer cements (GICs) after incorporating various metallic, polymeric, inorganic and carbon-based nanostructures. In addition, types, applications, and implications of various nanostructures incorporated in GICs are discussed. Most of the attempts by researchers are based on the laboratory-based studies; hence, it warrants long-term clinical trials to aid the development of suitable materials for the load bearing posterior dentition. Nevertheless, a few meaningful conclusions are drawn from this substantial piece of work; they are as follows: (1) most of the nanostructures are likely to enhance the mechanical strength of GICs; (2) certain nanostructures improve the antibacterial activity of GICs against the cariogenic bacteria; (3) clinical translation of these promising outcomes are completely missing, and (4) the nanostructured modified GICs could perform better than their conventional counterparts in the load bearing posterior dentition.
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Affiliation(s)
- Faiza Amin
- Science of Dental Materials Department, Dow Dental College, Dow University of Health Sciences, Karachi 74200, Pakistan;
| | - Sehrish Rahman
- Science of Dental Materials Department, Dr. Ishrat Ul Ebad Khan Institute of Oral Health Sciences, Dow University of Health Sciences, Karachi 74200, Pakistan; (S.R.); (N.K.)
| | - Zohaib Khurshid
- Department of Prosthodontics and Dental Implantology, College of Dentistry, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Muhammad Sohail Zafar
- Department of Restorative Dentistry, College of Dentistry, Taibah University, Al Madinah, Al Munawwarah 41311, Saudi Arabia;
- Department of Dental Materials, Islamic International Dental College, Riphah International University, Islamabad 44000, Pakistan
| | - Farshid Sefat
- Department of Biomedical and Electronics Engineering, School of Engineering, University of Bradford, Bradford BD7 1DP, UK;
| | - Naresh Kumar
- Science of Dental Materials Department, Dr. Ishrat Ul Ebad Khan Institute of Oral Health Sciences, Dow University of Health Sciences, Karachi 74200, Pakistan; (S.R.); (N.K.)
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21
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Naguib GH, Abd El-Aziz GS, Mously HA, Alhazmi WA, Alnowaiser AM, Hassan AH, Hamed MT. In vitro Investigation of the Antimicrobial Activity of Mouth Washes Incorporating Zein-Coated Magnesium Oxide Nanoparticles. Clin Cosmet Investig Dent 2021; 13:395-403. [PMID: 34588818 PMCID: PMC8473931 DOI: 10.2147/ccide.s327912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 09/01/2021] [Indexed: 12/03/2022] Open
Abstract
PURPOSE This in vitro study was undertaken to investigate the antimicrobial effect of distinctive oral mouth washes after the addition of zein-coated (Magnesium oxide) MgO nanoparticles on exemplary of some oral microorganisms. MATERIALS AND METHODS Three hundred and twelve samples were used in this study. A set of five concentrations of MgO nanoparticles with zein and without zein-coating were incorporated into three oral mouth washes: Listerine zero, Listerine total control and Oral B in the mass percentages of 0.3%, 0.5%, 1%, 2%, 5% and 10%, in addition to controls with no MgO nanoparticles. The antimicrobial effect of three mouth washes with variable concentrations of MgO was tested against the following organisms: Staphylococcus aureus, Streptococcus mutans, Enterococcus faecalis and Candida albicans using the disc diffusion test (DDT) and direct contact test (DCT). Data were analyzed using one-way ANOVA statistical test. RESULTS The tested mouthwashes with zein-coated MgO nanoparticles showed significant differences of antimicrobial activity on S. mutans, S. aureus, E. faecalis, and C. albicans in the disc diffusion test. While in the DCT, all tested mouthwashes with MgO nanoparticles with and without zein coating showed antimicrobial activity on all tested microorganisms. CONCLUSION Zein-coated MgO nanoparticles may be considered as a potential antimicrobial agent when added to oral mouthwashes. Future analysis, including in vivo studies, is required in order to incorporate zein/MgO nanoparticles into oral mouthwashes that may improve its antibacterial property.
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Affiliation(s)
- Ghada H Naguib
- Department of Restorative Dentistry, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
- Department of Oral Biology, Faculty of Dentistry, Cairo University, Cairo, Egypt
| | - Gamal S Abd El-Aziz
- Department of Anatomy, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Hisham A Mously
- Department of Oral and Maxillofacial Prosthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Wafaa A Alhazmi
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Abeer M Alnowaiser
- Department of Pediatric Dentistry, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ali H Hassan
- Department of Orthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mohamed T Hamed
- Department of Oral and Maxillofacial Prosthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
- Department of Fixed Prosthodontics, Faculty of Dentistry, Cairo University, Cairo, Egypt
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22
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Mayanagi G, Yufang L, Hoshino T, Takahashi N. A water-soluble glass-based temporary restorative resin inhibited bacteria-induced pH reductions at the bacteria-material interface. Dent Mater J 2021; 41:95-100. [PMID: 34483202 DOI: 10.4012/dmj.2021-129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This study aimed to evaluate the inhibitory effects of a water-soluble glass based temporary restorative resin (WSG-TRR) on bacteriainduced pH reductions at the bacteria-material interface. Each material (WSG-TRR, glass-ionomer cement, resin composite and conventional temporary restorative resin) was fixed to the bottom of the well of the experimental apparatus. The well was filled with pelleted cells of Streptococcus mutans, and the pH at the bacteria-material interface was monitored using a miniature pH electrode. The concentration of ions released from WSG-TRR and the effect of fluoride and zinc ions on bacteria-induced pH reduction was evaluated. The buffering capacities of WSG-TRR and WSG were also evaluated. At 90 min after the glucose addition, WSG-TRR exhibited the highest pH (5.29±0.12). Fluoride ion was detected at the interface between bacteria and WSG-TRR. Moreover, WSG were found to confer high buffering capacity. A WSG-TRR reduced bacteria-induced pH reductions at the bacteria-material interface.
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Affiliation(s)
- Gen Mayanagi
- Division of Oral Ecology and Biochemistry, Department of Oral Biology, Tohoku University Graduate School of Dentistry.,Liaison Center for Innovative Dentistry, Tohoku University Graduate School of Dentistry
| | - Luo Yufang
- Division of Oral Ecology and Biochemistry, Department of Oral Biology, Tohoku University Graduate School of Dentistry.,School and hospital of Stomatology, Fujian Medical University
| | - Tomohiro Hoshino
- Department of Next-Generation Dental Material Engineering, Tohoku University Graduate School of Dentistry
| | - Nobuhiro Takahashi
- Division of Oral Ecology and Biochemistry, Department of Oral Biology, Tohoku University Graduate School of Dentistry
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A Repeated State of Acidification Enhances the Anticariogenic Biofilm Activity of Glass Ionomer Cement Containing Fluoro-Zinc-Silicate Fillers. Antibiotics (Basel) 2021; 10:antibiotics10080977. [PMID: 34439027 PMCID: PMC8388977 DOI: 10.3390/antibiotics10080977] [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: 07/11/2021] [Revised: 08/07/2021] [Accepted: 08/10/2021] [Indexed: 11/21/2022] Open
Abstract
This study aimed to evaluate the anticariogenic biofilm activity of a novel zinc-containing glass ionomer cement, Caredyne Restore (CR), using a flow-cell system that reproduces Stephan responses. Streptococcus mutans biofilms were cultured on either CR or hydroxyapatite (HA) discs mounted on a modified Robbins device. The media were allowed to flow at a speed of 2 mL/min for 24 h while exposed to an acidic buffer twice for 30 min to mimic dietary uptake. Acid exposure enhanced biofilm inhibition in the CR group, which showed 2.6 log CFU/mm2 in viable cells and a 2 log copies/mL reduction in total cells compared to the untreated group after 24 h of incubation, suggesting enhanced anticariogenic activity due to the release of fluoride and zinc ions. However, there was no difference in the number of viable and total cells between the two experimental groups after 24 h of incubation in the absence of an acidic environment. The anticariogenic biofilm activity of CR occurs in acidic oral environments, for example in the transient pH drop following dietary uptake. CR restorations are recommended in patients at high risk of caries due to hyposalivation, difficulty brushing, and frequent sugar intake.
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Pan Y, Chen Y, Chen J, Ma Q, Gong T, Yu S, Zhang Q, Zou J, Li Y. The Adc regulon mediates zinc homeostasis in Streptococcus mutans. Mol Oral Microbiol 2021; 36:278-290. [PMID: 34351080 DOI: 10.1111/omi.12350] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/22/2021] [Accepted: 07/28/2021] [Indexed: 02/05/2023]
Abstract
Zinc (Zn2+ ) is an essential divalent trace metal for living cells. Intracellular zinc homeostasis is critical to the survival and virulence of bacteria. Thus, the frequent fluctuations of salivary zinc, caused by the low physiological level and the frequent exogenous zinc introduction, present a serious challenge for bacteria colonizing the oral cavity. However, the regulation strategies to keep intracellular Zn2+ homeostasis in Streptococcus mutans, an important causative pathogen of dental caries, are unknown. Because zinc uptake is primarily mediated by an ATP-binding ABC transporter AdcABC in Streptococcus strains, we examined the function of AdcABC and transcription factor AdcR in S. mutans in this study. The results demonstrated that deletion of either adcA or adcCB gene impaired the growth but enhanced the extracellular polymeric matrix production in S. mutans, both of which could be relieved after excessive Zn2+ supplementation. Using RNA sequencing analysis, quantitative reverse transcription polymerase chain reaction examination, LacZ-reporter studies, and electrophoretic mobility shift assay, we showed that a MarR (multiple antibiotic resistance regulator) family transcription factor, AdcR, negatively regulates the expression of the genes adcR, adcC, adcB, and adcA by acting on the adcRCB and adcA promoters in response to Zn2+ concentration in their environmental niches. The deletion of adcR increases the sensitivity of S. mutans to excessive Zn2+ supply. Taken together, our findings suggest that Adc regulon, which consists of a Zn2+ uptake transporter AdcCBA and a Zn2+ -responsive repressor AdcR, plays a prominent role in the maintenance of intracellular zinc homeostasis of S. mutans.
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Affiliation(s)
- Yangyang Pan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Pediatric Dentistry, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Yang Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jiamin Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Qizhao Ma
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Tao Gong
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Shuxing Yu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Qiong Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jing Zou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yuqing Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Zn-Doped CaP-Based Coatings on Ti–6Al–4V and Ti–6Al–7Nb Alloys Prepared by Magnetron Sputtering: Controllable Biodegradation, Bacteriostatic, and Osteogenic Activities. COATINGS 2021. [DOI: 10.3390/coatings11070809] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
New TiNb-based alloys, such as Ti–6Al–7Nb, are currently being studied around the world as an alternative to other Ti alloys, e.g., instead of Ti–6Al–4V. We conducted a pilot study where thin (approximately 1.2 micron) CaP coatings containing low doses of Zn2+ (0.4–0.8 wt.%) were prepared by the radio frequency magnetron sputtering (RFMS) of Zn-hydroxyapatite (HA) target on Ti–6Al–4V and Ti–6Al–7Nb substrates and investigated their physicochemical properties, in vitro solubility, cytotoxicity, and antibacterial and osteogenic activities. The thickness of the obtained coatings was approximately 1.2–1.3 microns. Zn substitution did not result in roughness or structural or surface changes in the amorphous CaP coatings. The distributions of Ca, P, and Zn were homogeneous across the film thickness as shown by the EDX mapping of these elements. Zn doping of CaP coatings on both types of Ti-based alloys statistically influenced the results of the scratch-test. However, obtained values are satisfactory to use Zn-CaP coatings on biomedical implants. Increased Zn2+ release vs. tapered output of Ca and phosphate ions occurred during 5 weeks of an in vitro immersion test in 0.9% NaCl solution. Ti–6Al–7Nb alloy, unlike Ti–6Al–4V, promoted more linear biodegradation of CaP coatings in vitro. As a result, CaP-based surfaces on Ti–6Al–7Nb, compared with on Ti–6Al–4V alloy, augmented the total areas of Alizarin red staining in a 21-day culture of human adipose-derived mesenchymal stem cells in a statistically significant manner. Moreover, Zn–CaP coatings statistically reduced leukemic Jurkat T cell survival within 48 h of in vitro culture. Along with the higher solubility of the Zn–CaP surface, a greater reduction (4- to 5.5-fold) in Staphylococcus aureus growth was observed in vitro when 7-day extracts of the coatings were added into the microbial culture. Hence, Zn–CaP-coated Ti–6Al–7Nb alloy with controllable biodegradation as prepared by RFMS is a prospective material suitable for bone applications in cases where there is a risk of bacterial contamination with severe consequences, for example, in leukemic patients. Further research is needed to closely investigate the mechanical features and pathways of their solubility and antimicrobial, antitumor, and osteogenic activities.
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26
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Aziz J, Rahman MT, Vaithilingam RD. Dysregulation of metallothionein and zinc aggravates periodontal diseases. J Trace Elem Med Biol 2021; 66:126754. [PMID: 33831799 DOI: 10.1016/j.jtemb.2021.126754] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 02/03/2021] [Accepted: 03/29/2021] [Indexed: 12/21/2022]
Abstract
BACKGROUND Periodontitis (PD) is a multifaceted inflammatory disease connected to bacterial infection that results in the destruction of tooth supporting structures and eventually tooth loss. Given their involvement in infection and inflammation, both metallothionein (MT) and zinc (Zn) might play vital roles in the development and progression of PD. More specifically, both MT and Zn are heavily involved in regulating immune functions, controlling bacterial infection, balancing inflammatory responses, and reducing oxidative stress, all of which are associated with the pathogenesis of PD. OBJECTIVE This review paper will explore the physiological functions of MT and Zn and hypothesise how dysregulation could negatively affect periodontal health, leading to PD. FINDINGS Bacterial lipopolysaccharide (LPS) derived from periodontal pathogens, namely P. gingivalis initiates the acute phase response, thus upregulating the expression of MT which leads to the subsequent deficiency of Zn, a hallmark of periodontal disease. This deficiency leads to ineffective NETosis, increases the permeability of the gingival epithelium, and disrupts the humoral immune response, collectively contributing to PD. In addition, the presence of LPS in Zn deficient conditions favours M1 macrophage polarisation and maturation of dendritic cells, and also inhibits the anti-inflammatory activity of regulatory T cells. Collectively, these observations could theoretically give rise to the chronic inflammation seen in PD. CONCLUSION A disrupted MT and Zn homeostasis is expected to exert an adverse impact on periodontal health and contribute to the development and progression of PD.
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Affiliation(s)
- Jazli Aziz
- Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur, 50603, Malaysia; Dept. of Oral & Craniofacial Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, 50603, Malaysia
| | | | - Rathna Devi Vaithilingam
- Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur, 50603, Malaysia
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27
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Passos MR, Almeida RS, Lima BO, Rodrigues JZDS, Macêdo Neres NSD, Pita LS, Marinho PDF, Santos IA, da Silva JP, Oliveira MC, Oliveira MA, Pessoa SMB, Silva MML, Silveira PHS, Reis MM, Santos IP, Ricardo LDON, Andrade LOSB, Soares AB, Correia TML, Souza ÉPD, Pires PN, Cruz MP, Marques LM, Uetanabaro APT, Yatsuda R. Anticariogenic activities of Libidibia ferrea, gallic acid and ethyl gallate against Streptococcus mutans in biofilm model. JOURNAL OF ETHNOPHARMACOLOGY 2021; 274:114059. [PMID: 33794333 DOI: 10.1016/j.jep.2021.114059] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 03/19/2021] [Accepted: 03/20/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE In Brazil, ethnopharmacological studies show that Libidibia ferrea (Mart. ex Tul.) L. P. Queiroz is commonly used in folk medicine as an antifungal, antimicrobial and anti-inflammatory. In the Amazon region, the dried fruit powder of L. ferrea are widely used empirically by the population in an alcoholic tincture as an antimicrobial mouthwash in oral infections and the infusion is also recommended for healing oral wounds. However, there are few articles that have evaluated the antimicrobial activity against oral pathogens in a biofilm model, identifying active compounds and mechanisms of action. AIM OF THE STUDY The aim of this study was to evaluate the antimicrobial and anti-adherence activities of the ethanolic extract, fractions and isolated compounds (gallic acid and ethyl gallate) of the fruit and seed of L. ferrea against Streptococcus mutans. The inhibition of acidicity/acidogenicity and the expression of the S. mutans GTF genes in biofilms were also evaluated. MATERIALS AND METHODS Minimal Inhibitory Concentration (MIC), Minimum Bactericidal Concentration (MBC) and Minimum Inhibitory Concentration of Cell Adhesion (MICA) were evaluated with ethanolic extract (EELF), fractions, gallic acid (GA) and ethyl gallate (EG) against S. mutans. Inhibition of biofilm formation, pH drop and proton permeability tests were conducted with EELF, GA and EG, and also evaluated the expression of the GTF genes in biofilms. The compounds of dichloromethane fraction were identified by GC-MS. RESULTS This is the first report of shikimic, pyroglutamic, malic and protocatechuic acids identified in L. ferrea. EELF, GA and EG showed MIC at 250 μg/mL, and MBC at 1000 μg/mL by EELF. EELF biofilms showed reduced dry weight and acidogenicity of S. mutans in biofilms. GA and EG reduced viable cells, glucans soluble in alkali, acidogenicity, aciduricity and downregulated expression of gtfB, gtfC and gtfD genes in biofilms. SEM images of GA and EG biofilms showed a reduction of biomass, exopolysaccharide and microcolonies of S. mutans. CONCLUSIONS The ethanolic extract of fruit and seed of L. ferrea, gallic acid and ethyl gallate showed great antimicrobial activity and inhibition of adhesion, reduction of acidogenicity and aciduricity in S. mutans biofilms. The results obtained in vitro validate the use of this plant in ethnopharmacology, and open opportunities for the development of new oral anticariogenic agents, originated by plants that can inhibit pathogenic biofilm that leads to the development of caries.
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Affiliation(s)
- Manuela Ribeiro Passos
- State University of Santa Cruz (UESC), Soane Nazaré de Andrade Campus, Jorge Amado Highway, 16 Km, Salobrinho, Ilhéus, Bahia, Brazil
| | - Rafael Silva Almeida
- Multidisciplinary Health Institute, Federal University of Bahia, 58 Hormindo Barros Street, Vitória da Conquista, Bahia, Brazil
| | - Brenda Oliveira Lima
- Multidisciplinary Health Institute, Federal University of Bahia, 58 Hormindo Barros Street, Vitória da Conquista, Bahia, Brazil
| | - Jeisa Zielle de Souza Rodrigues
- Multidisciplinary Health Institute, Federal University of Bahia, 58 Hormindo Barros Street, Vitória da Conquista, Bahia, Brazil
| | - Nayara Silva de Macêdo Neres
- Multidisciplinary Health Institute, Federal University of Bahia, 58 Hormindo Barros Street, Vitória da Conquista, Bahia, Brazil
| | - Louise Soares Pita
- Multidisciplinary Health Institute, Federal University of Bahia, 58 Hormindo Barros Street, Vitória da Conquista, Bahia, Brazil
| | | | - Iago Almeida Santos
- Multidisciplinary Health Institute, Federal University of Bahia, 58 Hormindo Barros Street, Vitória da Conquista, Bahia, Brazil
| | - Jamile Pinheiro da Silva
- Multidisciplinary Health Institute, Federal University of Bahia, 58 Hormindo Barros Street, Vitória da Conquista, Bahia, Brazil
| | - Milena Cardoso Oliveira
- Multidisciplinary Health Institute, Federal University of Bahia, 58 Hormindo Barros Street, Vitória da Conquista, Bahia, Brazil
| | - Mariana Araújo Oliveira
- Multidisciplinary Health Institute, Federal University of Bahia, 58 Hormindo Barros Street, Vitória da Conquista, Bahia, Brazil
| | - Stela Mares Brasileiro Pessoa
- Multidisciplinary Health Institute, Federal University of Bahia, 58 Hormindo Barros Street, Vitória da Conquista, Bahia, Brazil
| | - Marlon Mário Leles Silva
- Multidisciplinary Health Institute, Federal University of Bahia, 58 Hormindo Barros Street, Vitória da Conquista, Bahia, Brazil
| | - Paulo Henrique Santana Silveira
- Multidisciplinary Health Institute, Federal University of Bahia, 58 Hormindo Barros Street, Vitória da Conquista, Bahia, Brazil
| | - Mariane Mares Reis
- Multidisciplinary Health Institute, Federal University of Bahia, 58 Hormindo Barros Street, Vitória da Conquista, Bahia, Brazil
| | - Isabella Porto Santos
- Multidisciplinary Health Institute, Federal University of Bahia, 58 Hormindo Barros Street, Vitória da Conquista, Bahia, Brazil
| | | | | | - Ananda Brito Soares
- Multidisciplinary Health Institute, Federal University of Bahia, 58 Hormindo Barros Street, Vitória da Conquista, Bahia, Brazil
| | - Thiago Macêdo Lopes Correia
- Multidisciplinary Health Institute, Federal University of Bahia, 58 Hormindo Barros Street, Vitória da Conquista, Bahia, Brazil
| | - Érika Pereira de Souza
- Multidisciplinary Health Institute, Federal University of Bahia, 58 Hormindo Barros Street, Vitória da Conquista, Bahia, Brazil
| | - Polyane Novais Pires
- State University of Santa Cruz (UESC), Soane Nazaré de Andrade Campus, Jorge Amado Highway, 16 Km, Salobrinho, Ilhéus, Bahia, Brazil
| | - Mariluze Peixoto Cruz
- Multidisciplinary Health Institute, Federal University of Bahia, 58 Hormindo Barros Street, Vitória da Conquista, Bahia, Brazil
| | - Lucas Miranda Marques
- Multidisciplinary Health Institute, Federal University of Bahia, 58 Hormindo Barros Street, Vitória da Conquista, Bahia, Brazil
| | - Ana Paula Trovatti Uetanabaro
- State University of Santa Cruz (UESC), Soane Nazaré de Andrade Campus, Jorge Amado Highway, 16 Km, Salobrinho, Ilhéus, Bahia, Brazil
| | - Regiane Yatsuda
- Multidisciplinary Health Institute, Federal University of Bahia, 58 Hormindo Barros Street, Vitória da Conquista, Bahia, Brazil.
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Ganguly T, Peterson AM, Kajfasz JK, Abranches J, Lemos JA. Zinc import mediated by AdcABC is critical for colonization of the dental biofilm by Streptococcus mutans in an animal model. Mol Oral Microbiol 2021; 36:214-224. [PMID: 33819383 PMCID: PMC9178666 DOI: 10.1111/omi.12337] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 03/29/2021] [Accepted: 04/01/2021] [Indexed: 12/18/2022]
Abstract
Trace metals are essential to all domains of life but toxic when found at high concentrations. Although the importance of iron in host-pathogen interactions is firmly established, contemporary studies indicate that other trace metals, including manganese and zinc, are also critical to the infectious process. In this study, we sought to identify and characterize the zinc uptake system(s) of Streptococcus mutans, a keystone pathogen in dental caries and a causative agent of bacterial endocarditis. Different than other pathogenic bacteria, including several streptococci, that encode multiple zinc import systems, bioinformatic analysis indicated that the S. mutans core genome encodes a single, highly conserved, zinc importer commonly known as AdcABC. Inactivation of the genes coding for the metal-binding AdcA (ΔadcA) or both AdcC ATPase and AdcB permease (ΔadcCB) severely impaired the ability of S. mutans to grow under zinc-depleted conditions. Intracellular metal quantifications revealed that both mutants accumulated less zinc when grown in the presence of a subinhibitory concentration of a zinc-specific chelator. Notably, the ΔadcCB strain displayed a severe colonization defect in a rat oral infection model. Both Δadc strains were hypersensitive to high concentrations of manganese, showed reduced peroxide tolerance, and formed less biofilm in sucrose-containing media when cultivated in the presence of the lowest amount of zinc that support their growth, but not when zinc was supplied in excess. Collectively, this study identifies AdcABC as the major high affinity zinc importer of S. mutans and provides preliminary evidence that zinc is a growth-limiting factor within the dental biofilm.
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Affiliation(s)
- Tridib Ganguly
- Department of Oral Biology, College of Dentistry, University of Florida, Gainesville, Florida, USA
| | - Alexandra M. Peterson
- Department of Oral Biology, College of Dentistry, University of Florida, Gainesville, Florida, USA
| | - Jessica K. Kajfasz
- Department of Oral Biology, College of Dentistry, University of Florida, Gainesville, Florida, USA
| | - Jacqueline Abranches
- Department of Oral Biology, College of Dentistry, University of Florida, Gainesville, Florida, USA
| | - José A. Lemos
- Department of Oral Biology, College of Dentistry, University of Florida, Gainesville, Florida, USA
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29
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Baheiraei N, Eyni H, Bakhshi B, Najafloo R, Rabiee N. Effects of strontium ions with potential antibacterial activity on in vivo bone regeneration. Sci Rep 2021; 11:8745. [PMID: 33888790 PMCID: PMC8062523 DOI: 10.1038/s41598-021-88058-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Accepted: 04/07/2021] [Indexed: 11/15/2022] Open
Abstract
Bioactive glasses (BGs) have attracted added attention in the structure of the scaffolds for bone repair applications. Different metal ions could be doped in BGs to induce specific biological responses. Among these ions, strontium (Sr) is considered as an effective and safe doping element with promising effects on bone formation and regeneration. In this experiment, we evaluated the antibacterial activities of the gelatin-BG (Gel-BG) and Gel-BG/Sr scaffolds in vitro. The osteogenic properties of the prepared scaffolds were also assessed in rabbit calvarial bone defects for 12 weeks. Both scaffolds showed in vivo bone formation during 12 weeks with the newly formed bone area in Gel-BG/Sr scaffold was higher than that in Gel-BG scaffolds after the whole period. Based on the histological results, Gel-BG/Sr exhibited acceleration of early-stage bone formation in vivo. The results of antibacterial investigation for both scaffolds showed complete growth inhibition against Escherichia coli (E. coli). Although Gel-BG revealed no antibacterial effect on Staphylococcus aureus (S. aureus), the Gel-BG/Sr was able to partially inhibit the growth of S. aureus, as detected by threefold reduction in growth index. Our results confirmed that Sr doped BG is a favorable candidate for bone tissue engineering with superior antibacterial activity and bone regeneration capacity compared with similar counterparts having no Sr ion.
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Affiliation(s)
- Nafiseh Baheiraei
- Tissue Engineering and Applied Cell Sciences Division, Department of Anatomical Sciences, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
| | - Hossein Eyni
- Department of Anatomical Sciences, Faculty of Medical sceinces, Tarbiat Modares University, Tehran, Iran
| | - Bita Bakhshi
- Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Raziyeh Najafloo
- Department of Bio-Informatics, Faculty of Interdisciplinary Science and Technology, Tarbiat Modares University, Tehran, Iran
| | - Navid Rabiee
- Department of Chemistry, Shahid Beheshti University, Tehran, Iran
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Rajendiran M, Trivedi HM, Chen D, Gajendrareddy P, Chen L. Recent Development of Active Ingredients in Mouthwashes and Toothpastes for Periodontal Diseases. Molecules 2021; 26:molecules26072001. [PMID: 33916013 PMCID: PMC8037529 DOI: 10.3390/molecules26072001] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 03/22/2021] [Accepted: 03/26/2021] [Indexed: 01/01/2023] Open
Abstract
Periodontal diseases like gingivitis and periodontitis are primarily caused by dental plaque. Several antiplaque and anti-microbial agents have been successfully incorporated into toothpastes and mouthwashes to control plaque biofilms and to prevent and treat gingivitis and periodontitis. The aim of this article was to review recent developments in the antiplaque, anti-gingivitis, and anti-periodontitis properties of some common compounds in toothpastes and mouthwashes by evaluating basic and clinical studies, especially the ones published in the past five years. The common active ingredients in toothpastes and mouthwashes included in this review are chlorhexidine, cetylpyridinium chloride, sodium fluoride, stannous fluoride, stannous chloride, zinc oxide, zinc chloride, and two herbs—licorice and curcumin. We believe this comprehensive review will provide useful up-to-date information for dental care professionals and the general public regarding the major oral care products on the market that are in daily use.
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Affiliation(s)
- Meenakshi Rajendiran
- The Center for Wound Healing and Tissue Regeneration, Department of Periodontics, College of Dentistry, University of Illinois at Chicago, Chicago, IL 60612, USA;
| | - Harsh M Trivedi
- Colgate-Palmolive Company, Piscataway, NJ 08854, USA; (H.M.T.); (D.C.)
| | - Dandan Chen
- Colgate-Palmolive Company, Piscataway, NJ 08854, USA; (H.M.T.); (D.C.)
| | - Praveen Gajendrareddy
- The Center for Wound Healing and Tissue Regeneration, Department of Periodontics, College of Dentistry, University of Illinois at Chicago, Chicago, IL 60612, USA;
- Correspondence: (P.G.); (L.C.); Tel.: +1-312-413-8405 (P.G.); +1-312-413-5387 (L.C.)
| | - Lin Chen
- The Center for Wound Healing and Tissue Regeneration, Department of Periodontics, College of Dentistry, University of Illinois at Chicago, Chicago, IL 60612, USA;
- Correspondence: (P.G.); (L.C.); Tel.: +1-312-413-8405 (P.G.); +1-312-413-5387 (L.C.)
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Kumagai T, Kashiwamura H, Katsumata M, Ozaki M. Verification of antibacterial activity to enamel surfaces of new type of surface coating. PEDIATRIC DENTAL JOURNAL 2021. [DOI: 10.1016/j.pdj.2021.01.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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32
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Hutchings C, Prokocimer Yair Z, Reifen R, Shemesh M. Antimicrobial Effect of Zn 2+ Ions Governs the Microbial Quality of Donor Human Milk. Foods 2021; 10:637. [PMID: 33802996 PMCID: PMC8002753 DOI: 10.3390/foods10030637] [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] [Received: 01/06/2021] [Revised: 03/10/2021] [Accepted: 03/11/2021] [Indexed: 11/21/2022] Open
Abstract
Donor human milk (HM) obtained at HM banks is exceptionally crucial for the feeding and treatment of preterm infants. Bacterial contaminations of HM in various stages of its handling are very common and can lead to disqualification of donations or severe infections in worse cases. Hence, HM donations are subject to strict bacteriological evaluations pre- and post-pasteurization. The main contaminating species vary between countries, banks and donors and even exhibit inter-individual variation. We initiated an assessment of the bacteriological composition of HM donated by women hospitalized in a neonatal intensive care unit in Israel. The most common bacterium identified was Staphylococcus epidermidis, found in all but one of the HM samples; the presence of several species of coagulase-negative Staphylococci was also noted. Next, we sought to develop a platform towards antibacterial treatment using Zn2+ ions that have recently been found to be potent against contaminants isolated from bovine milk. Zn2+ efficiently inhibited the growth of viable aerobic population and S. epidermidis in HM. Growth was also inhibited in other Gram-positive bacteria such as Bacillus cereus, a well-known food-borne pathogen. S. epidermidis and B. cereus cells grown in the presence of zinc were taken for microscopic evaluation, aiming to demonstrate zinc's antimicrobial mode of action morphologically. Images obtained using scanning electron microscopy indicated leakage of cellular content and cell lysis in S. epidermidis. Besides, B. cereus cells showed abnormalities in their cell surface and complete loss of flagella upon treatment with zinc. Along with the above findings, it should be noted that this was a pilot study that tested how high doses of Zn2+ affect breast milk as a product. Further research is likely needed on the safety of consumption of Zn2+-treated HM in infants and older children.
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Affiliation(s)
- Carmel Hutchings
- Department of Food Sciences, Institute for Postharvest Technology and Food Sciences, Agricultural Research Organization (ARO), Volcani Center, Rishon LeZion 7528809, Israel;
- School of Nutrition Science, Institute of Biochemistry, Food Science and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, Institute of Biochemistry, Food Science and Nutrition, The Hebrew University of Jerusalem, Rehovot 761001, Israel
| | - Zafnat Prokocimer Yair
- Schneider Children’s Medical Center Israel, Emergency Medicine Department, Petah-Tikva 49202, Israel;
| | - Ram Reifen
- School of Nutrition Science, Institute of Biochemistry, Food Science and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, Institute of Biochemistry, Food Science and Nutrition, The Hebrew University of Jerusalem, Rehovot 761001, Israel
| | - Moshe Shemesh
- Department of Food Sciences, Institute for Postharvest Technology and Food Sciences, Agricultural Research Organization (ARO), Volcani Center, Rishon LeZion 7528809, Israel;
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Liu YC, Lee YT, Huang TC, Lin GS, Chen YW, Lee BS, Tung KL. In Vitro Bioactivity and Antibacterial Activity of Strontium-, Magnesium-, and Zinc-Multidoped Hydroxyapatite Porous Coatings Applied via Atmospheric Plasma Spraying. ACS APPLIED BIO MATERIALS 2021; 4:2523-2533. [PMID: 35014370 DOI: 10.1021/acsabm.0c01535] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The beneficial effects of Sr- and Mg-doped hydroxyapatite (HAp) on osteoblast proliferation and bone regeneration have been investigated in the past, and the antibacterial ability of Zn ions is well known. However, HAp coatings doped with these three elements via thermal spraying have not yet been investigated. In this study, HAp powder was synthesized at different pH values (4, 6, 8, and 10) and calcined at different temperatures (200, 400, 600, 800, and 1000 °C) to obtain HAp with the highest purity. Subsequently, strontium-, magnesium-, and zinc-doped HAp powders were synthesized at the optimal pH value and calcination temperature. The HAp powder was then coated onto Ti disks using atmospheric plasma spraying (APS) or vapor-induced pore-forming atmospheric plasma spraying (VIPF-APS) techniques at different working currents (350, 400, and 450 A) and spraying distances (10 and 15 cm). X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy equipped with energy-dispersive spectroscopy were used for material characterization to determine the optimal parameters. With these optimal coating parameters, HAp, Zn-HAp, SrMg-HAp, and ZnSrMg-HAp powders were deposited onto the Ti disks using VIPF-APS and named HAp-Ti, Zn-HAp-Ti, SrMg-HAp-Ti, and ZnSrMg-HAp-Ti, respectively. The in vitro bioactivity of these four groups was evaluated using a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide and alkaline phosphatase (ALPase) activity assay. Besides, the antibacterial activities against Prevotella nigrescens, Porphyromonas gingivalis, and Fusobacterium nucleatum were assessed. The results showed that the purity of HAp synthesized at pH 10 and 800 °C was 98.40%. A porous coating without cracks was obtained at a 10 cm spraying distance and 400 A working current using VIPF-APS. SrMg-HAp-Ti and ZnSrMg-HAp-Ti resulted in higher osteoblast proliferation and ALPase activity than the control. Moreover, both Zn-HAp-Ti and ZnSrMg-HAp-Ti exhibited antibacterial activity against the three bacteria. Therefore, ZnSrMg-HAp has potential as a coating for biomedical materials due to its ability to reduce bacterial infection and enhance osseointegration.
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Affiliation(s)
- Yu-Cheng Liu
- Advanced Research Center for Green Materials Science and Technology and Department of Chemical Engineering, National Taiwan University, Taipei 106, Taiwan
| | - Ying-Te Lee
- Graduate Institute of Oral Biology, School of Dentistry, and National Taiwan University Hospital, National Taiwan University, Taipei 106, Taiwan
| | - Tse-Chiang Huang
- Advanced Research Center for Green Materials Science and Technology and Department of Chemical Engineering, National Taiwan University, Taipei 106, Taiwan
| | - Geng-Sheng Lin
- Advanced Research Center for Green Materials Science and Technology and Department of Chemical Engineering, National Taiwan University, Taipei 106, Taiwan
| | - Yi-Wen Chen
- Graduate Institute of Clinical Dentistry, School of Dentistry, and National Taiwan University Hospital, National Taiwan University, Taipei 106, Taiwan
| | - Bor-Shiunn Lee
- Graduate Institute of Oral Biology, School of Dentistry, and National Taiwan University Hospital, National Taiwan University, Taipei 106, Taiwan
| | - Kuo-Lun Tung
- Advanced Research Center for Green Materials Science and Technology and Department of Chemical Engineering, National Taiwan University, Taipei 106, Taiwan.,Center for Biotechnology, National Taiwan University, Taipei 10617, Taiwan
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Yang T, Wang D, Liu X. Antibacterial activity of an NIR-induced Zn ion release film. J Mater Chem B 2021; 8:406-415. [PMID: 31850453 DOI: 10.1039/c9tb02258a] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Photothermal therapy originated from using gold nanorods (GNRs) and near-infrared (NIR) irradiation has been widely used in the antibacterial field. Zn element exhibits antimicrobial activity against various bacterial and fungal strains. In this study, a bilayer film, consisting of GNRs as the inner layer and a polydopamine layer containing Zn element (PDA@Zn) as the outer layer, was deposited on the Ti surface. The results testified that all the GNR-modified surfaces had the same photothermal conversion efficiency. The Ti surface modified with GNR and PDA@Zn layers had better antibacterial activity against E. coli and S. aureus due to the GNR-induced photothermal effect and the antibacterial Zn element. Moreover, the accelerated release of Zn ions from the PDA@Zn layer was attributed to the GNR-induced high temperature under the NIR irradiation, which caused the concentration of Zn ions to be high enough to kill the surrounding bacteria. This study illustrates that a composite surface possessing both the contact and heat-responsive antibacterial property was constructed on titanium for potential clinical applications.
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Affiliation(s)
- Tingting Yang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China.
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Ajami S, Habibagahi R, Khashei R, Soroorian M. Evaluation of flexural strength and antibacterial effect of orthodontic acrylic resins containing Galla chinensis extract. Dental Press J Orthod 2021; 25:43-48. [PMID: 33503124 PMCID: PMC7869800 DOI: 10.1590/2177-6709.25.6.043-048.oar] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 09/30/2019] [Indexed: 11/25/2022] Open
Abstract
Objective: To evaluate different concentrations of Galla chinensis
extract (GCE) added to poly(methyl methacrylate) (PMMA), which is widely
used for fabrication of removable orthodontic appliances, regarding the
effectiveness of this herbal extract on antimicrobial effect and flexural
strength of PMMA. Methods: Acrylic resin samples containing 0.4%, 0.8% and 1.6% GCE were prepared.
Flexural strength was investigated via three-point flexural strength test
for the 15 acrylic resin blocks of each concentration. Disk diffusion test
was used to evaluate antibacterial effects of incorporating the same
concentrations of GCE into acrylic resin. All these three groups were
compared with the control group, with no added GCE, regarding flexural
strength and antibacterial properties. Results: Comparison of flexural strength between the three study groups and the
control group showed significant differences between the groups (P=0.018).
However, there was no significant difference between the groups containing
GCE. There were significant differences in antimicrobial activity between
the four groups (P=0.026). Conclusion: Within the limitations of this study, it is suggested that incorporation of
GCE into PMMA would be beneficial for antimicrobial activity and flexural
strength of PMMA, but further studies on other physical properties and
antimicrobial effects on other bacterial strain would be beneficial prior to
clinical investigations.
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Affiliation(s)
- Shabnam Ajami
- Shiraz University of Medical Sciences, Orthodontic Research Center, Dental School (Shiraz, Iran)
| | - Raha Habibagahi
- Shiraz University of Medical Sciences, Orthodontic Research Center, Dental School (Shiraz, Iran)
| | - Reza Khashei
- Shiraz University of Medical Sciences, School of Medicine, Department of Bacteriology and Virology (Shiraz, Iran)
| | - Malihe Soroorian
- Shiraz University of Medical Sciences, Orthodontic Research Center, Dental School (Shiraz, Iran)
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Tatulli G, Modesti V, Pucci N, Scala V, L’Aurora A, Lucchesi S, Salustri M, Scortichini M, Loreti S. Further In Vitro Assessment and Mid-Term Evaluation of Control Strategy of Xylella fastidiosa subsp. pauca in Olive Groves of Salento (Apulia, Italy). Pathogens 2021; 10:85. [PMID: 33478174 PMCID: PMC7835972 DOI: 10.3390/pathogens10010085] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 01/13/2021] [Accepted: 01/14/2021] [Indexed: 12/13/2022] Open
Abstract
During recent years; Xylella fastidiosa subsp. pauca (Xfp) has spread in Salento causing relevant damage to the olive groves. Measures to contain the spreading of the pathogen include the monitoring of the areas bordering the so-called "infected" zone and the tree eradication in case of positive detection. In order to provide a control strategy aimed to maintain the tree productivity in the infected areas, we further evaluated the in vitro and in planta mid-term effectiveness of a zinc-copper-citric acid biocomplex. The compound showed an in vitro bactericidal activity and inhibited the biofilm formation in representative strains of X. fastidiosa subspecies, including Xfp isolated in Apulia from olive trees. The field mid-term evaluation of the control strategy assessed by quantitative real-time PCR in 41 trees of two olive groves of the "infected" area revealed a low concentration of Xfp over the seasons upon the regular spraying of the biocomplex over 3 or 4 consecutive years. In particular, the bacterial concentration lowered in July and October with respect to March, after six consecutive treatments. The trend was not affected by the cultivar and it was similar either in the Xfp-sensitive cultivars Ogliarola salentina and Cellina di Nardò or in the Xfp-resistant Leccino. Moreover, the scoring of the number of wilted twigs over the seasons confirmed the trend. The efficacy of the treatment in the management of olive groves subjected to a high pathogen pressure is highlighted by the yielded a good oil production.
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Affiliation(s)
- Giuseppe Tatulli
- Council for Agricultural Research and Economics (CREA), Research Centre for Plant Protection and Certification, 00156 Roma, Italy; (G.T.); (V.M.); (N.P.); (V.S.); (A.L.); (S.L.)
| | - Vanessa Modesti
- Council for Agricultural Research and Economics (CREA), Research Centre for Plant Protection and Certification, 00156 Roma, Italy; (G.T.); (V.M.); (N.P.); (V.S.); (A.L.); (S.L.)
| | - Nicoletta Pucci
- Council for Agricultural Research and Economics (CREA), Research Centre for Plant Protection and Certification, 00156 Roma, Italy; (G.T.); (V.M.); (N.P.); (V.S.); (A.L.); (S.L.)
| | - Valeria Scala
- Council for Agricultural Research and Economics (CREA), Research Centre for Plant Protection and Certification, 00156 Roma, Italy; (G.T.); (V.M.); (N.P.); (V.S.); (A.L.); (S.L.)
| | - Alessia L’Aurora
- Council for Agricultural Research and Economics (CREA), Research Centre for Plant Protection and Certification, 00156 Roma, Italy; (G.T.); (V.M.); (N.P.); (V.S.); (A.L.); (S.L.)
| | - Simone Lucchesi
- Council for Agricultural Research and Economics (CREA), Research Centre for Plant Protection and Certification, 00156 Roma, Italy; (G.T.); (V.M.); (N.P.); (V.S.); (A.L.); (S.L.)
| | - Manuel Salustri
- Dipartimento di Biologia Ambientale, Sapienza University of Rome, 00185 Roma, Italy;
| | - Marco Scortichini
- Council for Agricultural Research and Economics (CREA), Research Centre for Olive, Fruit and Citrus Crops, 00134 Roma, Italy
| | - Stefania Loreti
- Council for Agricultural Research and Economics (CREA), Research Centre for Plant Protection and Certification, 00156 Roma, Italy; (G.T.); (V.M.); (N.P.); (V.S.); (A.L.); (S.L.)
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Guo C, Ma X, Wang B. Metal-organic Frameworks-based Composites and Their Photothermal Applications. ACTA CHIMICA SINICA 2021. [DOI: 10.6023/a21040173] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Ahrari F, Eslami N, Fasihi F, Jamalinasab A. Biocompatibility of several colloidal solutions containing nanoparticles on human gingival fibroblasts. Dent Res J (Isfahan) 2021. [DOI: 10.4103/1735-3327.310037] [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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Naksagoon T, Ohsumi T, Takenaka S, Nagata R, Hasegawa T, Maeda T, Noiri Y. Effect of water aging on the anti-biofilm properties of glass ionomer cement containing fluoro-zinc-silicate fillers. BIOFOULING 2020; 36:1090-1099. [PMID: 33349036 DOI: 10.1080/08927014.2020.1856371] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 11/09/2020] [Accepted: 11/20/2020] [Indexed: 06/12/2023]
Abstract
A previous study has reported that a novel fluoro-zinc-silicate glass ionomer cement (Caredyne Restore) showed superior anti-biofilm effects by interfering with bacterial adhesion. However, the active ions may degrade with time. This study aimed to assess the valid anti-biofilm effects of Caredyne Restore after being aged by water immersion for 3 weeks. Streptococcus mutans biofilm was allowed to grow on the surface before and after water aging for 24 h using a modified Robbins device flow-cell system. The results showed water aging promoted biofilm formation. Insufficient amount of fluoride and zinc ions were released from Caredyne Restore after water aging under neutral pH condition. An acidic pH is needed to exert effective anti-biofilm properties. As the release of active ions from Caredyne Restore will gradually decrease after the restoration, the restoration may not prevent biofilm formation after 3 weeks while neutral pH is maintained by the buffering capacity of saliva.
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Affiliation(s)
- Traithawit Naksagoon
- Division of Cariology, Operative Dentistry, and Endodontics, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
- Research Centre for Advanced Oral Science, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Tatsuya Ohsumi
- Division of Cariology, Operative Dentistry, and Endodontics, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Shoji Takenaka
- Division of Cariology, Operative Dentistry, and Endodontics, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Ryoko Nagata
- Division of Cariology, Operative Dentistry, and Endodontics, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Taisuke Hasegawa
- Division of Cariology, Operative Dentistry, and Endodontics, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Takeyasu Maeda
- Research Centre for Advanced Oral Science, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Yuichiro Noiri
- Division of Cariology, Operative Dentistry, and Endodontics, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
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Nishida E, Miyaji H, Shitomi K, Sugaya T, Akasaka T. Evaluation of antibacterial and cytocompatible properties of multiple-ion releasing zinc-fluoride glass nanoparticles. Dent Mater J 2020; 40:157-164. [PMID: 32999216 DOI: 10.4012/dmj.2019-176] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Zinc-fluoride glass nanoparticles (Zinc-F) release several ions, such as fluoride, zinc and calcium ions, through acid-base reactions. The aim of this study was to evaluate the antibacterial and cytotoxic properties of Zinc-F. Antibacterial tests showed that a Zinc-F eluting solution significantly reduced the turbidity and colony-forming units of Streptococcus mutans and Actinomyces naeslundii, compared to that of calcium-fluoroaluminosilicate glass nanoparticles without zinc ions. In live/dead staining, Zinc-F eluate significantly decreased green-stained bacterial cells, indicating live cells, compared with the control (no application). Human dentin coated with Zinc-F showed suppressed S. mutans and A. naeslundii biofilm formation. Additionally, Zinc-F eluate showed low cytotoxic effects in osteoblastic and fibroblastic cells. Therefore, our findings suggested that Zinc-F exhibits antibacterial and biocompatible properties through multiple-ion release.
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Affiliation(s)
- Erika Nishida
- Department of Periodontology and Endodontology, Faculty of Dental Medicine, Hokkaido University
| | - Hirofumi Miyaji
- Department of Periodontology and Endodontology, Faculty of Dental Medicine, Hokkaido University
| | - Kanako Shitomi
- Department of Periodontology and Endodontology, Faculty of Dental Medicine, Hokkaido University
| | - Tsutomu Sugaya
- Department of Periodontology and Endodontology, Faculty of Dental Medicine, Hokkaido University
| | - Tsukasa Akasaka
- Department of Biomedical Materials and Engineering, Faculty of Dental Medicine, Hokkaido University
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Yue R, Niu J, Li Y, Ke G, Huang H, Pei J, Ding W, Yuan G. In vitro cytocompatibility, hemocompatibility and antibacterial properties of biodegradable Zn-Cu-Fe alloys for cardiovascular stents applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 113:111007. [DOI: 10.1016/j.msec.2020.111007] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 03/09/2020] [Accepted: 04/20/2020] [Indexed: 12/26/2022]
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Çınarlı M, Yüksektepe Ataol Ç, Çınarlı E, İdil Ö. Synthesis, characterization, biological, X-ray diffraction analysis and computational chemistry studies of new 2-acetylpyridine derivative hydrazone and its Zn(II) complex. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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43
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Yassaei S, Nasr A, Zandi H, Motallaei MN. Comparison of antibacterial effects of orthodontic composites containing different nanoparticles on Streptococcus mutans at different times. Dental Press J Orthod 2020; 25:52-60. [PMID: 32490920 PMCID: PMC7265670 DOI: 10.1590/2177-6709.25.2.052-060.oar] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 06/05/2019] [Indexed: 11/30/2022] Open
Abstract
Introduction: Plaque accumulation can cause white spot lesions. Adding nanoparticles to composites can be effective in reducing the number and function of microorganisms. Objective: The aim of this study was to evaluate the antibacterial effects of orthodontic composites containing different nanoparticles on Streptococcus mutans at different times. Methods: Hydroxyapatite, titanium oxides, zinc oxide, copper oxide and silver oxide nanoparticles were prepared at 0.5% and 1% weight concentrations. Accordingly, ten study groups and one control group were obtained. Then, 26 composite discs were prepared from each group. Strain of Streptococcus mutans was cultured, and colonies of Streptococcus mutans were counted. Further bacterial culture was swapped onto enriched Mueller-Hinton agar. The composites were placed on the culture medium, and after incubation the diameter of growth inhibition was measured. To investigate the long-term effect of nanoparticles, the colonies were counted at days 3, 15 and 30. Results: The results showed that 1% copper oxide and 1% silver oxide significantly reduced the number of bacteria (p< 0.05), but there was no significant difference between the other groups and control group (p> 0.05). At day three, there was a significant difference between control group and 0.5% silver oxide, 1% silver oxide and 1% copper oxide groups (p< 0.05). However, colonies had grown in all groups at day 30 but showed no significant difference with control group (p> 0.05). Conclusion: Addition of 1% copper oxide and 1% silver oxide has short-term antibacterial effects, so the clinical use of these nanoparticles cannot be justified.
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Affiliation(s)
- Soghra Yassaei
- Department of Orthodontics, Faculty of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Ali Nasr
- Department of Orthodontics, Faculty of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Hengameh Zandi
- Department of Microbiology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Mohammad Nima Motallaei
- Department of Orthodontics, Faculty of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
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Sadeghi-Aghbash M, Rahimnejad M, Pourali SM. Bio-Mediated Synthesis and Characterization of Zinc Phosphate Nanoparticles Using <i>Enterobacter aerogenes</i> Cells for Antibacterial and Anticorrosion Applications. Curr Pharm Biotechnol 2020; 21:1232-1241. [PMID: 32370712 DOI: 10.2174/1389201021666200506073534] [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] [Received: 12/03/2019] [Revised: 03/25/2020] [Accepted: 04/19/2020] [Indexed: 12/24/2022]
Abstract
BACKGROUND The promising properties of Zinc Phosphate (ZnP) Nanoparticles (NPs) have made them come into prominence as one of the most favorable catalysts in various industries with ever- increasing applications. Among several proposed synthetic methods, biological methods have mostly been desired for their sheer person-environment compatibility in comparison with those of chemical and physical ones. OBJECTIVE Therefore, the synthesis of ZnP NPs via biological route was developed in this study. METHOD Herein proposed a facile, applicable procedure for ZnP NPs via biosynthesis route, which included precipitation of Zinc Nitrate (Zn(NO3)2.6H2O) and diammonium hydrogen phosphate ((NH4)2HPO4) in the presence of Enterobacter aerogenes as the synthetic intermediate. Investigation of the anti-corrosion behavior of the synthesized NPs was explored on carbon steel in the hydrochloric acid corrosive environment to provide deeper insight into their unique anti-corrosion properties. Additionally, their antibacterial activities were also examined against Escherichia coli, Staphylococcus aureus and Streptococcus mutans. RESULTS The results of X-ray Diffraction (XRD), Fourier Transform Infrared (FTIR) spectroscopy, Field Emission Scanning Electron Microscope (FE-SEM) and the Energy Dispersive X-Ray Spectroscopy (EDS) analyses confirmed the successful synthesis of ZnP NPs. Moreover, the examinations of both anti-corrosion and antibacterial properties, revealed that the synthesized NPs could be a promising anti-corrosion/antibacterial agent. CONCLUSION ZnP NPs with an average size of 30-35 nm were successfully synthesized via the simple, suitable biological method. Results implied that these particles could be used as a non-toxic, environmentally friendly, corrosion-resistant and antibacterial agent instead of toxic and uneco-friendly ones.
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Affiliation(s)
- Mona Sadeghi-Aghbash
- Chemical Engineering Department, Babol Noshirvani University of Technology, Babol, Mazandaran, Iran
| | - Mostafa Rahimnejad
- Chemical Engineering Department, Babol Noshirvani University of Technology, Babol, Mazandaran, Iran
| | - S Masoomeh Pourali
- Chemical Engineering Department, Babol Noshirvani University of Technology, Babol, Mazandaran, Iran
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Swetha DL, Vinay C, Uloopi KS, RojaRamya KS, Chandrasekhar R. Antibacterial and Mechanical Properties of Pit and Fissure Sealants Containing Zinc Oxide and Calcium Fluoride Nanoparticles. Contemp Clin Dent 2020; 10:477-482. [PMID: 32308323 PMCID: PMC7150578 DOI: 10.4103/ccd.ccd_805_18] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Context Pit and fissure sealants (PFSs) are the most effective preventive materials in dentistry. Secondary caries around the sealed pits and fissures at the material-tooth interface and the wear of the material remains the common problems. To address these problems, efforts have been made by incorporating zinc oxide (ZnO) and calcium fluoride (CaF2) nanoparticles (NPs) into the sealants to develop caries-inhibiting and stress-bearing sealants. Aim Evaluation of antibacterial and mechanical properties of PFS containing ZnO and CaF2 NPs. Settings and Design This was an in vitro study. Materials and Methods A total of 196 fissure sealant samples were divided into six test groups and a control group. The test group samples were prepared by incorporating two concentrations (0.5 wt% and 1 wt%) of ZnO and CaF2 NPs into the sealants. The antibacterial activity was evaluated by direct contact test; compressive and flexural strengths were evaluated by a universal testing machine. Statistical Analysis Used Statistical analysis was done by one-way ANOVA and post hoc Tukey test. Results Sealants containing 1 wt% ZnO and CaF2 NPs and their mixture exhibited significantly higher antibacterial activity against Streptococcus mutans and Lactobacillus acidophilus when compared to control group (P < 0.001). Samples with ZnO NPs exhibited similar mechanical properties as conventional sealant (control group); however, the samples with CaF2 NPs showed inferior mechanical properties (P < 0.05). Conclusion The observations of the study infer that sealants containing 1 wt% ZnO and CaF2 NPs and their mixture exhibited superior antibacterial activity. The mechanical properties of samples containing ZnO and mixture of ZnO and CaF2 particles remained comparable to the conventional sealants.
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Affiliation(s)
- Dara Lakshmi Swetha
- Department of Pedodontics and Preventive Dentistry, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India
| | - C Vinay
- Department of Pedodontics and Preventive Dentistry, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India
| | - K S Uloopi
- Department of Pedodontics and Preventive Dentistry, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India
| | - Kakarla Sri RojaRamya
- Department of Pedodontics and Preventive Dentistry, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India
| | - Rayala Chandrasekhar
- Department of Pedodontics and Preventive Dentistry, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India
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Li J, Wu T, Peng W, Zhu Y. Effects of resveratrol on cariogenic virulence properties of Streptococcus mutans. BMC Microbiol 2020; 20:99. [PMID: 32303183 PMCID: PMC7165372 DOI: 10.1186/s12866-020-01761-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 03/23/2020] [Indexed: 02/01/2023] Open
Abstract
Background Streptococcus mutans is the principal etiological agent of human dental caries. The major virulence factors of S. mutans are acid production, acid tolerance, extracellular polysaccharide (EPS) synthesis and biofilm formation. The aim of this study is to evaluate the effect of resveratrol, a natural compound, on virulence properties of S. mutans. Results Resveratrol at sub-MIC levels significantly decreased acid production and acid tolerance, inhibited synthesis of water-soluble polysaccharide and water-insoluble polysaccharide, compromised biofilm formation. Related virulence gene expression (ldh, relA, gtfC, comDE) was down-regulated with increasing concentrations of resveratrol. Conclusions Resveratrol has an inhibitory effect on S. mutans cariogenic virulence properties and it represents a promising anticariogenic agent.
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Affiliation(s)
- Jinheng Li
- Department of General Dentistry, College of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, 639 Zhi Zao Ju Road, Shanghai, 200011, China
| | - Tiantian Wu
- Department of General Dentistry, College of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, 639 Zhi Zao Ju Road, Shanghai, 200011, China
| | - Weiwei Peng
- Department of General Dentistry, College of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, 639 Zhi Zao Ju Road, Shanghai, 200011, China
| | - Yaqin Zhu
- Department of General Dentistry, College of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, 639 Zhi Zao Ju Road, Shanghai, 200011, China.
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Rodrigues JZDS, Passos MR, Silva de Macêdo Neres N, Almeida RS, Pita LS, Santos IA, Santana Silveira PH, Reis MM, Santos IP, de Oliveira Negrão Ricardo L, Lima BO, D'Orleans Farias Marinho P, Soares AB, Silva Bastos Andrade LO, Brasileiro Pessoa SM, Leles Silva MM, Oliveira MC, Pinheiro da Silva J, Moura MA, Cruz MP, Marques LM, Santos TT, Pires PN, Teixeira Dias JC, Rezende RP, Trovatti Uetanabaro AP, Yatsuda R. Antimicrobial activity of Lactobacillus fermentum TcUESC01 against Streptococcus mutans UA159. Microb Pathog 2020; 142:104063. [PMID: 32061821 DOI: 10.1016/j.micpath.2020.104063] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 02/10/2020] [Accepted: 02/11/2020] [Indexed: 10/25/2022]
Abstract
Dental caries is a multifactorial chronic-infection disease, which starts with a bacterial biofilm formation caused mainly by Streptococcus mutans. The use of probiotics has shown numerous health benefits, including in the fight against oral diseases. Strains of Lactobacillus fermentum have already shown probiotic potential against S. mutans, but there are still few studies. Thus, the aim of our study was to evaluate the antimicrobial activity of the inoculum and metabolites produced by L. fermentum TcUESC01 against S. mutans UA159. For this, a growth curve of L. fermentum was performed and both the inoculum and the metabolites formed in the fermentation were tested against the growth of S. mutans UA159 in agar diffusion tests, and only its metabolites were tested to determine the minimum inhibitory concentration, minimal bactericidal concentration and inhibition of cell adhesion. Inhibition of biofilm formation, pH drop and proton permeability were also tested with the metabolites. The zone of inhibition began to be formed at 14 h and continued until 16 h. The inoculum containing L. fermentum also showed zone of inhibition. The MIC for the metabolites was 1280 mg/mL and the MBC was obtained with a concentration higher than the MIC equal to 5120 mg/mL. Half of the MIC concentration (640 mg/mL) was required to inhibit S. mutans adhesion to the surface of the microplates. In the biofilm analyzes, the treatment with the metabolites in the tested concentration was not able to reduce biomass, insoluble glucans and alkali soluble compared to the control biofilm (p > 0.05). The metabolites also did not affect acid production and acid tolerance of S. mutans cells in biofilms compared to saline group (p > 0.05). Lactic acid (50.38%) was the most abundant organic acid produced by L. fermentum. This is the first report showing that the metabolites produced by the Lactobacillus fermentum TcUESC01 have a potential to be used as an antimicrobial agent against S. mutans, showing anti-adherence and bactericidal activity against planktonic cells of S. mutans. Thus, further studies should be carried out in order to better understand the antimicrobial activity of metabolites of L. fermentum TCUESC01.
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Affiliation(s)
| | - Manuela Ribeiro Passos
- State University of Santa Cruz (UESC), Soane Nazaré de Andrade Campus, Jorge Amado Highway, 16 km, Salobrinho, Ilhéus, Bahia BA, CEP 45662-900, Brazil
| | - Nayara Silva de Macêdo Neres
- Multidisciplinary Health Institute, 58 Hormindo Barros Street, Vitória da Conquista, Bahia BA, CEP 45029-094, Brazil
| | - Rafael Silva Almeida
- Multidisciplinary Health Institute, 58 Hormindo Barros Street, Vitória da Conquista, Bahia BA, CEP 45029-094, Brazil
| | - Louise Soares Pita
- Multidisciplinary Health Institute, 58 Hormindo Barros Street, Vitória da Conquista, Bahia BA, CEP 45029-094, Brazil
| | - Iago Almeida Santos
- Multidisciplinary Health Institute, 58 Hormindo Barros Street, Vitória da Conquista, Bahia BA, CEP 45029-094, Brazil
| | | | - Mariane Mares Reis
- Multidisciplinary Health Institute, 58 Hormindo Barros Street, Vitória da Conquista, Bahia BA, CEP 45029-094, Brazil
| | - Isabella Porto Santos
- Multidisciplinary Health Institute, 58 Hormindo Barros Street, Vitória da Conquista, Bahia BA, CEP 45029-094, Brazil
| | | | - Brenda Oliveira Lima
- Multidisciplinary Health Institute, 58 Hormindo Barros Street, Vitória da Conquista, Bahia BA, CEP 45029-094, Brazil
| | | | - Ananda Brito Soares
- Multidisciplinary Health Institute, 58 Hormindo Barros Street, Vitória da Conquista, Bahia BA, CEP 45029-094, Brazil
| | | | - Stela Mares Brasileiro Pessoa
- Multidisciplinary Health Institute, 58 Hormindo Barros Street, Vitória da Conquista, Bahia BA, CEP 45029-094, Brazil
| | - Marlon Mário Leles Silva
- Multidisciplinary Health Institute, 58 Hormindo Barros Street, Vitória da Conquista, Bahia BA, CEP 45029-094, Brazil
| | - Milena Cardoso Oliveira
- Multidisciplinary Health Institute, 58 Hormindo Barros Street, Vitória da Conquista, Bahia BA, CEP 45029-094, Brazil
| | - Jamile Pinheiro da Silva
- Multidisciplinary Health Institute, 58 Hormindo Barros Street, Vitória da Conquista, Bahia BA, CEP 45029-094, Brazil
| | - Mariana Araújo Moura
- Multidisciplinary Health Institute, 58 Hormindo Barros Street, Vitória da Conquista, Bahia BA, CEP 45029-094, Brazil
| | - Mariluze Peixoto Cruz
- Multidisciplinary Health Institute, 58 Hormindo Barros Street, Vitória da Conquista, Bahia BA, CEP 45029-094, Brazil
| | - Lucas Miranda Marques
- Multidisciplinary Health Institute, 58 Hormindo Barros Street, Vitória da Conquista, Bahia BA, CEP 45029-094, Brazil
| | - Tizá Teles Santos
- State University of Santa Cruz (UESC), Soane Nazaré de Andrade Campus, Jorge Amado Highway, 16 km, Salobrinho, Ilhéus, Bahia BA, CEP 45662-900, Brazil
| | - Polyane Novais Pires
- State University of Santa Cruz (UESC), Soane Nazaré de Andrade Campus, Jorge Amado Highway, 16 km, Salobrinho, Ilhéus, Bahia BA, CEP 45662-900, Brazil
| | - João Carlos Teixeira Dias
- State University of Santa Cruz (UESC), Soane Nazaré de Andrade Campus, Jorge Amado Highway, 16 km, Salobrinho, Ilhéus, Bahia BA, CEP 45662-900, Brazil
| | - Rachel Passos Rezende
- State University of Santa Cruz (UESC), Soane Nazaré de Andrade Campus, Jorge Amado Highway, 16 km, Salobrinho, Ilhéus, Bahia BA, CEP 45662-900, Brazil
| | - Ana Paula Trovatti Uetanabaro
- State University of Santa Cruz (UESC), Soane Nazaré de Andrade Campus, Jorge Amado Highway, 16 km, Salobrinho, Ilhéus, Bahia BA, CEP 45662-900, Brazil
| | - Regiane Yatsuda
- Multidisciplinary Health Institute, 58 Hormindo Barros Street, Vitória da Conquista, Bahia BA, CEP 45029-094, Brazil.
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Liu Z, Tan L, Liu X, Liang Y, Zheng Y, Yeung KWK, Cui Z, Zhu S, Li Z, Wu S. Zn 2+-assisted photothermal therapy for rapid bacteria-killing using biodegradable humic acid encapsulated MOFs. Colloids Surf B Biointerfaces 2020; 188:110781. [PMID: 31935632 DOI: 10.1016/j.colsurfb.2020.110781] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 01/02/2020] [Accepted: 01/06/2020] [Indexed: 01/23/2023]
Abstract
Bacterial infection is seriously threatening human health all over the world, especially with the emergence of increasing drug-fast bacteria. It is urgent to develop a drug-free strategy to kill bacteria rapidly and efficiently. In this work, humic acid (HuA) encapsulated zeolitic imidazole framework-8 (ZIF-8) (HuA@ZIF-8) nanocomposites are synthesized by the in-situ growth of ZIF-8 on the surface of polyvinylpyrrolidone (PVP)-modified HuA. The synthesized nanocomposites possesses good photothermal effects, i.e., the temperature increased to 59.4 °C under the particle concentration of 1000 μg/mL with 10 min NIR irradiation. In addition, NIR irradiation can also control the release of Zn2+ from the composites. The good photothermal effects originate from HuA that can effectively absorb NIR light. The controlled release of Zn2+ is ascribed to the induced-dissociation of ZIF-8 under NIR light irradiation. The synergistic action of photothermal therapy and release of zinc ions contributes to the excellent antibacterial efficiency of HuA@ZIF-8 within a short time, i.e. 99.59 % and 99.37 % against Staphylococcus aureus and Escherichia coli with 20 min NIR irradiation, respectively. This work provides a promising strategy to develop a light-responsive platform with good biodegradability and low cost for rapid and effective sterilization.
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Affiliation(s)
- Ziwei Liu
- Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan, 430062, China
| | - Lei Tan
- Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan, 430062, China
| | - Xiangmei Liu
- Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan, 430062, China.
| | - Yanqin Liang
- The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, School of Materials Science & Engineering, Tianjin University, Tianjin, 300072, China
| | - Yufeng Zheng
- State Key Laboratory for Turbulence and Complex System, Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China
| | - Kelvin Wai Kwok Yeung
- Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Zhenduo Cui
- The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, School of Materials Science & Engineering, Tianjin University, Tianjin, 300072, China
| | - Shengli Zhu
- The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, School of Materials Science & Engineering, Tianjin University, Tianjin, 300072, China
| | - Zhaoyang Li
- The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, School of Materials Science & Engineering, Tianjin University, Tianjin, 300072, China
| | - Shuilin Wu
- The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, School of Materials Science & Engineering, Tianjin University, Tianjin, 300072, China.
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López-Saucedo F, Zúñiga-Villarreal N, Flores-Rojas GG, Martínez-Otero D, Magariños B, Bucio E. Zinc heterocyclic vinyl complexes and their gamma-irradiated derivatives: From the metal to antimicrobial materials. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2019.104410] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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50
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Chetan, Vijayalakshmi U. A systematic review of the interaction and effects generated by antimicrobial metallic substituents in bone tissue engineering. Metallomics 2020; 12:1458-1479. [DOI: 10.1039/d0mt00127a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Changes brought about by metal ions and metal nanoparticles within bacterial cells and the damage caused to the cellular membrane upon contact with negatively charged surface components.
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Affiliation(s)
- Chetan
- Department of Chemistry
- School of Advanced Sciences
- Vellore Institute of Technology
- Vellore-632 014
- India
| | - Uthirapathy Vijayalakshmi
- Department of Chemistry
- School of Advanced Sciences
- Vellore Institute of Technology
- Vellore-632 014
- India
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