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Espíndola-Castro LF, de Oliveira Ribeiro RA, de Souza Costa CA, Rosenblatt A, Galembeck A, de Melo Monteiro GQ. Evaluation of the cytotoxicity of new formulations of cariostatic agents containing nano silver fluoride: an in vitro study. Odontology 2024:10.1007/s10266-024-01001-4. [PMID: 39279012 DOI: 10.1007/s10266-024-01001-4] [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: 03/27/2024] [Accepted: 08/26/2024] [Indexed: 09/18/2024]
Abstract
The objective of the study was to assess the indirect cytotoxicity of 600 ppm and 1500 ppm nano silver fluoride (NSF) compared to other commercial cariostatic agents. 56 dentin discs with 0.4 mm in thickness were obtained from intact human molars and adapted to artificial pulp chambers (APCs). The discs were divided into seven groups according to treatment (n = 8): no treatment (positive control-PC), 29% hydrogen peroxide (negative control-NC), 30% Cariestop (CS30), 38% Riva Star (RS38), 38% Advantage Arrest (AA38), 600 ppm NSF (NSF600), and 1500 ppm NSF (NSF1500). The cariostatic agents were applied on the occlusal surface of the dentin discs (facing upward), and the pulp surface (facing downward) remained in contact with the culture medium. Immediately after the treatments, the extracts (DMEM + cariostatic agent components diffused through the discs) were collected and applied to MDPC-23 cells, which were assessed for viability (CV-alamarBlue, live/dead), adhesion/spreading (F-actin), alkaline phosphatase (ALP) activity, and mineralization nodule (MN) formation. The data were statistically analyzed by ANOVA/Games-Howell (p = 0.05). CV and ALP activity in CS30, RS38, AA38, and NSF600 were similar to PC (p > 0.05). MN formation significantly decreased only in NC, CS30, RS38, and AA38 compared to PC (p < 0.001). Only NSF600 and NSF1500 did not differ from PC (p > 0.05) with mineralization nodules, and this specific cell activity significantly decreased in all other groups (p < 0.05). NSF solutions (600 ppm and 1500 ppm) did not cause transdentinal toxicity on MDPC-23 cells.
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Affiliation(s)
| | | | | | - Aronita Rosenblatt
- Department of Dentistry, University of Pernambuco (UPE), R. Arnóbio Marques, 310 - Santo Amaro, Recife, PE, Brazil
| | - André Galembeck
- Department of Chemistry, Federal University of Pernambuco (UFPE), Recife, Pernambuco, Brazil
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Choi JH, Lee ES, Jung HI, Kim BI. Drug delivery and antibiofilm efficacy of nano silver fluoride sustained release orthodontic elastomerics against Streptococcus mutans. Sci Rep 2024; 14:19912. [PMID: 39198680 PMCID: PMC11358501 DOI: 10.1038/s41598-024-70632-y] [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: 02/15/2024] [Accepted: 08/20/2024] [Indexed: 09/01/2024] Open
Abstract
We aimed to investigate the chemical and physical properties of nano silver fluoride sustained release orthodontic elastomerics (NSF-RE) and determine their antimicrobial and antibiofilm formation activities against Streptococcus mutans. Orthodontic elastomerics were dip-coated with NSF solution in ethyl cellulose (EC) and polyethylene glycol 6000 (PEG). The studied groups included NSF (no EC/PEG), NSF-E (EC), NSF-EP1 (EC:PEG, 4:1), and NSF-EP2 (EC:PEG, 2:1). The cumulative release of silver nanoparticles (AgNPs) and fluoride, along with the compatibility of the tensile force with orthodontic brackets, was evaluated. The antimicrobial activity was evaluated using an agar diffusion test. The inhibition of biofilm formation was evaluated using colony-forming units (CFUs), biofilm thickness, and the live/dead cell ratio. NSF-RE containing EC sustained the release of AgNPs and fluoride for > 7 days. Tensile forces were not significantly different among the groups. The inhibition zone was 2.64- and 1.31-fold larger with NSF-EP2 than that with NSF and NSF-E, respectively. NSF-EP2 was the most effective in inhibiting biofilm formation with significant reductions in CFUs, biofilm thickness, and live/dead cell ratio by 57, 86, and 96%, respectively, as compared to those in the control group. Overall, sustained release of AgNPs and fluoride by NSF-RE provides antimicrobial and antibiofilm effects against S. mutans.
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Affiliation(s)
- Jun-Hyuk Choi
- Department of Preventive Dentistry and Public Oral Health, BK21 FOUR Project, Yonsei University College of Dentistry, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, Republic of Korea
| | - Eun-Song Lee
- Department of Preventive Dentistry and Public Oral Health, BK21 FOUR Project, Yonsei University College of Dentistry, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, Republic of Korea
| | - Hoi-In Jung
- Department of Preventive Dentistry and Public Oral Health, BK21 FOUR Project, Yonsei University College of Dentistry, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, Republic of Korea
| | - Baek-Il Kim
- Department of Preventive Dentistry and Public Oral Health, BK21 FOUR Project, Yonsei University College of Dentistry, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, Republic of Korea.
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Fakhri E, SadrHaghighi A, Sarvari R, Torabi M, Azizi Y, Eskandarinezhad M, Sedighnia N, Keyhanvar P, Amirsaadat S. Colloidal chitosan-silver nanoparticles-fluoride nanocomposite as an antibacterial mouthwash against salivary Streptococcus mutans in orthodontic patients (a randomized clinical trial). Clin Oral Investig 2024; 28:435. [PMID: 39028340 DOI: 10.1007/s00784-024-05802-3] [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: 11/05/2023] [Accepted: 06/21/2024] [Indexed: 07/20/2024]
Abstract
OBJECTIVES This study aimed to synthesize and characterize colloidal chitosan-silver nanoparticles-fluoride nanocomposite (CCAgNPF) and evaluate its efficacy compared to chlorhexidine on salivary Streptococcus mutans in orthodontic patients. MATERIALS AND METHODS AgNPs stabilized with chitosan were synthesized by chemical reduction of AgNO3. The nanoparticles were characterized with SEM, FTIR, DLS and ICP-OES. The MIC and MBC against S. mutans and IC50 concentration of CCAgNPF were obtained for antibacterial and cytotoxicity evaluations, respectively. For the clinical study, a total of 45 orthodontic patients were divided into three groups of 15 and used the following mouthwashes twice a day for 1 month: CCAgNPF, chlorhexidine 0.2% and the combination of these mouthwashes. The colony count of salivary S. mutans was evaluated before and after using the mouthwashes. The data were analyzed using One-way ANOVA and Tukey's test. RESULTS Stabilized AgNPs were spherical with a diameter of 25.3 ± 3.3 nm. The MIC, MBC and IC50 of CCAgNPF were 4.42, 8.85 and 18.89 µg/ml. All mouthwashes reduced the salivary S. mutans of the orthodontic patients, however, no significant difference was found between the efficacy of CCAgNPF and chlorhexidine (P-value > 0.05). The best results were achieved by the combination of CCAgNPF and chlorhexidine mouthwashes (P-value < 0.05). CONCLUSION The CCAgNPF and its combination with chlorhexidine present potent bactericidal, biocompatible and effective anti-carious mouthwashes for orthodontic patients. CLINICAL RELEVANCE This study proved CCAgNPF as an antibacterial mouthwash with lower cytotoxicity and side effects for patients undergoing orthodontic treatments to maintain oral hygiene and reduce salivary S. mutans.
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Affiliation(s)
- Elaheh Fakhri
- Dental and Periodontal Research Center, Faculty of Dentistry, Tabriz University of Medical Sciences IR, Tabriz, Iran
| | - AmirHooman SadrHaghighi
- Department of Orthodontics, Faculty of Dentistry, Tabriz University of Medical Sciences IR, Tabriz, Iran
| | - Raana Sarvari
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences IR, Tabriz, Iran
| | - Mitra Torabi
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Tabriz University of Medical Sciences IR, Tabriz, Iran
| | - Yasaman Azizi
- Faculty of Dentistry, Tabriz University of Medical Sciences IR, Tabriz, Iran
| | - Mahsa Eskandarinezhad
- Department of Endodontics, Faculty of Dentistry, Tabriz University of Medical Sciences IR, Tabriz, Iran
| | - Negar Sedighnia
- Faculty of Dentistry, Tabriz University of Medical Sciences IR, Tabriz, Iran.
| | - Peyman Keyhanvar
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Soumayeh Amirsaadat
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Ribeiro BG, de Souza Leão VLX, Guerra JMC, Sarubbo LA. Cookies and muffins containing biosurfactant: textural, physicochemical and sensory analyses. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2023; 60:2180-2192. [PMID: 37273570 PMCID: PMC10232712 DOI: 10.1007/s13197-023-05745-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 12/07/2022] [Accepted: 04/12/2023] [Indexed: 06/06/2023]
Abstract
Interest in products with more natural ingredients increases the potential for application of Biosurfactants in foods. The aim of the present study was to assess the toxicity of biosurfactant produced by Saccharomyces cerevisiae URM6670 and the effect of the incorporation of this biosurfactant on the physicochemical and textural characteristics of cookies and muffins, performing unprecedented assessment of the sensorial effects of this application. The toxicity analysis revealed that the biosurfactant is classified as a mild irritant, with irritation indices lower than 4.9. The physical analysis of the incorporation of the biosurfactant in the formulation revealed that the addition of 1% to cookies significantly increased the diameter and spread factor. In muffins, significant changes in these properties were found beginning at 0.25% biosurfactant. The moisture content in cookies was reduced by a maximum of 74%, while in muffins this reduction was approximately 6%. The lipid content increased significantly with the addition of 1% of the biosurfactant (11% in cookies and 25% in muffins). The textural analysis revealed that the biosurfactant at 1% led to a significant increase in firmness as a consequence of the reduction in the moisture content. In muffins, the same concentration increased the firmness and variables related to chewability. The sensory analysis revealed that the muffins with biosurfactant had greater acceptance compared to the cookies. Thus, the biosurfactant demonstrated potential application in bakery products due to low toxicity and positive evaluation in important sensorial parameters for its commercialisation.
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Affiliation(s)
- Beatriz Galdino Ribeiro
- Northeast Biotechnology Network (RENORBIO), Federal Rural University of Pernambuco, Recife, PE Brazil
- Department of Chemical Engineering, Federal University of Pernambuco, Recife, PE Brazil
- Advanced Institute of Technology and Innovation (IATI), Recife, PE Brazil
| | | | | | - Leonie Asfora Sarubbo
- UNICAP Icam Tech School, Catholic University of Pernambuco, Recife, PE Brazil
- Advanced Institute of Technology and Innovation (IATI), Recife, PE Brazil
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Somwongin S, Sirilun S, Chantawannakul P, Anuchapreeda S, Yawootti A, Chaiyana W. Ultrasound-assisted green extraction methods: An approach for cosmeceutical compounds isolation from Macadamia integrifolia pericarp. ULTRASONICS SONOCHEMISTRY 2023; 92:106266. [PMID: 36527764 PMCID: PMC9791925 DOI: 10.1016/j.ultsonch.2022.106266] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 12/02/2022] [Accepted: 12/11/2022] [Indexed: 06/17/2023]
Abstract
This study aimed was to examine the potential of several green extraction methods to extract cosmetic/cosmeceutical components from Macadamia integrifolia pericarps, which were a by-product of the macadamia nut industry. M. integrifolia pericarps were extracted by conventional solvent extraction process using 95% v/v ethanol and various green extraction methods, including infusion, ultrasound, micellar, microwave, and pulsed electric field extraction using water as a clean and green solvent. The extracts were evaluated for total phenolic content using Folin-Ciocalteu method.The antioxidant activities were evaluated by 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2'-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), ferric reducing/antioxidant power, and ferric-thiocyanate method. The anti-skin ageing activities were investigated by means of collagenase, elastase, and hyaluronidase inhibition using enzyme-substrate reaction assay. The irritation profile of the extracts was evaluated by the hen's egg test-chorioallantoic membrane (HET-CAM) test. The results noted that ultrasound-assisted extraction yielded the significantly highest extract amount with the significantly highest total phenolic content (p < 0.05), especially when the extraction time was 10 min. The aqueous extract from ultrasound-assisted extraction possessed the most potent antioxidant and anti-skin ageing activities (p < 0.05). Its antioxidant activities were comparable to ascorbic acid and Trolox, whereas the anti-skin ageing activities were equivalent to epigallocatechin-3-gallate and oleanolic acid. Besides, the extract was safe since it induced no irritation in the HET-CAM test. Therefore, ultrasound-assisted extraction was suggested as an environmentally friendly extraction method for M. integrifolia pericarp extraction and further application in the cosmetic/cosmeceutical industries.
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Affiliation(s)
- Suvimol Somwongin
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Sasithorn Sirilun
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand; Innovation Center for Holistic Health, Nutraceuticals, and Cosmeceuticals, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Panuwan Chantawannakul
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200 Thailand
| | - Songyot Anuchapreeda
- Research Center of Pharmaceutical Nanotechnology, Chiang Mai University, Chiang Mai 50200, Thailand; Division of Clinical Microscopy, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Artit Yawootti
- Department of Electrical Engineering, Faculty of Engineering, Rajamangala University of Technology Lanna, Chiang Mai 50300, Thailand
| | - Wantida Chaiyana
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand; Innovation Center for Holistic Health, Nutraceuticals, and Cosmeceuticals, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand; Research Center of Pharmaceutical Nanotechnology, Chiang Mai University, Chiang Mai 50200, Thailand.
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dos Santos EMP, Martins CCB, de Oliveira Santos JV, da Silva WRC, Silva SBC, Pelagio-Flores MA, Galembeck A, Cavalcanti IMF. Silver nanoparticles-chitosan composites activity against resistant bacteria: tolerance and biofilm inhibition. JOURNAL OF NANOPARTICLE RESEARCH : AN INTERDISCIPLINARY FORUM FOR NANOSCALE SCIENCE AND TECHNOLOGY 2021; 23:196. [PMID: 34456615 PMCID: PMC8383018 DOI: 10.1007/s11051-021-05314-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 08/16/2021] [Indexed: 05/27/2023]
Abstract
UNLABELLED This study aimed to evaluate the effectiveness of silver nanoparticles-chitosan composites (AgNPs) with different morphologies and particle size distributions against resistant bacteria and biofilm formation. Four different samples were prepared by a two-step procedure using sodium borohydride and ascorbic acid as reducing agents and characterized by UV-Vis absorption spectra, scanning transmission electron microscopy. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of the AgNPs were determined according to the Clinical and Laboratory Standards Institute (CLSI) against clinical isolates multidrug-resistant and strains of the American Type Culture Collection (ATCC). An assay was performed to determine the MICs during 20 successive bacteria exposures to AgNPs to investigate whether AgNPs induce tolerance in bacteria. The antibiofilm activities of AgNPs were also evaluated by determining the minimum biofilm inhibitory concentration (MBIC). The spherical AgNPs present diameters ranging from 9.3 to 62.4 nm, and some samples also have rod-, oval-, and triangle-shaped nanoparticles. The MIC and MBC values ranged from 0.8 to 25 μg/mL and 3.1 to 50 μg/mL, respectively. Smaller and spherical AgNPs exhibited the highest activity, but all the AgNPs developed in this study exhibit bactericidal activity. There was no significant MIC increase after 20 passages to the AgNPs. Regarding the antibiofilm activity, MBICs ranged from 12.5 to 50 μg/mL. Again, smaller and spherical nanoparticles presented the best results with phenotypic inhibition of production of slime or exopolysaccharide (EPS) matrix. Thus, it was concluded that AgNPs have a promising potential against resistant bacteria and bacteria that grow on biofilms without inducing tolerance. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s11051-021-05314-1.
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Affiliation(s)
- Eduarda Melquiades Pirette dos Santos
- Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco (UFPE), Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife, Pernambuco CEP: 50670-901 Brazil
| | - Carla Castelo Branco Martins
- Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco (UFPE), Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife, Pernambuco CEP: 50670-901 Brazil
| | - João Victor de Oliveira Santos
- Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco (UFPE), Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife, Pernambuco CEP: 50670-901 Brazil
| | - Wagner Roberto Cirilo da Silva
- Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco (UFPE), Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife, Pernambuco CEP: 50670-901 Brazil
| | - Sidicleia Bezerra Costa Silva
- Department of Fundamental Chemistry, Federal University of Pernambuco (UFPE), Av. Jorn. Aníbal Fernandes, s/n, Cidade Universitária, Recife, Pernambuco CEP: 50740-560 Brazil
| | - Miguel Angel Pelagio-Flores
- Department of Fundamental Chemistry, Federal University of Pernambuco (UFPE), Av. Jorn. Aníbal Fernandes, s/n, Cidade Universitária, Recife, Pernambuco CEP: 50740-560 Brazil
| | - André Galembeck
- Department of Fundamental Chemistry, Federal University of Pernambuco (UFPE), Av. Jorn. Aníbal Fernandes, s/n, Cidade Universitária, Recife, Pernambuco CEP: 50740-560 Brazil
| | - Isabella Macário Ferro Cavalcanti
- Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco (UFPE), Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife, Pernambuco CEP: 50670-901 Brazil
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Arnaud M, Junior PC, Lima MG, E Silva AV, Araujo JT, Gallembeck A, de França Caldas Júnior A, Rosenblatt A. Nano-silver Fluoride at Higher Concentration for Caries Arrest in Primary Molars: A Randomized Controlled Trial. Int J Clin Pediatr Dent 2021; 14:207-211. [PMID: 34413593 PMCID: PMC8343678 DOI: 10.5005/jp-journals-10005-1920] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Aim and objective To compare the arresting caries effectiveness of two different silver nanoparticle (AgNP) concentrations of nano-silver fluoride (NSF), namely 400 and 600 ppm. The hypothesis is that in posterior primary teeth with occlusal and approximal active dentin carious lesions, NSF 600's effectiveness will be higher than that of the NSF 400 solution over a 6-month follow-up period. Materials and methods This was a double-blind randomized clinical trial (RCT) conducted in the city of Recife, Brazil. A total of 337 children aged 5–7 years who attended the University of Pernambuco Dental School's clinics were examined. A single-blinded investigator conducted the examinations and treatment of the children. After baseline examination and recording of the dmft index, children were allocated to one of two study groups (NSF 600—intervention and NSF 400—positive control). In both groups, each tooth received two drops of NSF and treatments were performed only once in 6 months. The follow-up examinations were visual and tactile, performed in 30, 90, and 180 days to determine the activity of caries. The carious lesions that were not arrested in 30 days were recorded and referred for restorative treatment. Results The NSF 600 showed higher rate of success in arresting caries (72.7%, p = 0.025) compared with NSF 400 (56.5%). Conclusion The higher rate of success of NSF 600 can be explained by the higher concentration of AgNPs. Clinical significance Nano-silver fluoride has emerged as an excellent alternative to silver diamine fluoride (SDF), as it adds a high antibacterial effect to better esthetic results. Treatment is simple, non-invasive, and incurs low cost. It is ideal for use in community-based programs to increase the access to dental care without staining teeth black like other silver products. How to cite this article Arnaud M, Junior PCM, Lima MGS, et al. Nano-silver Fluoride at Higher Concentration for Caries Arrest in Primary Molars: A Randomized Controlled Trial. Int J Clin Pediatr Dent 2021;14(2):207–211.
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Affiliation(s)
- Manuela Arnaud
- Department of Pediatric Dentistry, University of Pernambuco, Recife, Pernambuco, Brazil
| | - Paulo Cm Junior
- Department of Pediatric Dentistry, University of Pernambuco, Recife, Pernambuco, Brazil
| | - Maria Gs Lima
- Department of Pediatric Dentistry, University of Pernambuco, Recife, Pernambuco, Brazil
| | - Amitis Vc E Silva
- Department of Pediatric Dentistry, University of Pernambuco, Recife, Pernambuco, Brazil
| | - Joas T Araujo
- Department of Pediatric Dentistry, University of Pernambuco, Recife, Pernambuco, Brazil
| | - Andre Gallembeck
- Department of Chemistry, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | | | - Aronita Rosenblatt
- Department of Postgraduation/Pediatric Dentistry, University of Pernambuco, Camaragibe, Brazil
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Backx BP, Dos Santos MS, Dos Santos OAL, Filho SA. The Role of Biosynthesized Silver Nanoparticles in Antimicrobial Mechanisms. Curr Pharm Biotechnol 2021; 22:762-772. [PMID: 33530905 DOI: 10.2174/1389201022666210202143755] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 10/29/2020] [Accepted: 11/12/2020] [Indexed: 11/22/2022]
Abstract
Nanotechnology is an area of science in which new materials are developed. The correlation between nanotechnology and microbiology is essential for the development of new drugs and vaccines. The main advantage of combining these areas is to associate the latest technology in order to obtain new ways for solving problems related to microorganisms. This review seeks to investigate nanoparticle formation's antimicrobial properties, primarily when connected to the green synthesis of silver nanoparticles. The development of new sustainable methods for nanoparticle production has been instrumental in designing alternative, non-toxic, energy-friendly, and environmentally friendly routes. In this sense, it is necessary to study silver nanoparticles' green synthesis concerning their antimicrobial properties. Antimicrobial silver nanoparticles' mechanisms demonstrate efficiency to gram-positive bacteria, gram-negative bacteria, fungi, viruses, and parasites. However, attention is needed with the emergence of resistance to these antimicrobials. This article seeks to relate the parameters of green silver- based nanosystems with the efficiency of antimicrobial activity.
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Affiliation(s)
- Bianca P Backx
- Numpex-Bio, Universidade Federal do Rio de Janeiro (UFRJ), Campus Duque de Caxias, Duque de Caxias, Brazil
| | - Mayara S Dos Santos
- Numpex-Bio, Universidade Federal do Rio de Janeiro (UFRJ), Campus Duque de Caxias, Duque de Caxias, Brazil
| | - Otávio A L Dos Santos
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC (UFABC), Santo Andre, Brazil
| | - Sérgio A Filho
- Numpex-Bio, Universidade Federal do Rio de Janeiro (UFRJ), Campus Duque de Caxias, Duque de Caxias, Brazil
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Mehanna MM, Mneimneh AT, Abed El Jalil K. Levofloxacin-loaded naturally occurring monoterpene-based nanoemulgel: a feasible efficient system to circumvent MRSA ocular infections. Drug Dev Ind Pharm 2020; 46:1787-1799. [PMID: 32896171 DOI: 10.1080/03639045.2020.1821048] [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] [Indexed: 12/14/2022]
Abstract
Staphylococcus aureus is a leading cause of ocular keratitis worldwide, and the upsurge of Methicillin-resistant Staphylococcus Aureus (MRSA) strains necessitated the development of new antimicrobial agents. D-limonene is the major constituent of oil extracted from citrus peel, which has been utilized for its gastroprotective, antifungal, antitumor, and antibacterial effects. The present study aimed to develop an effective in-situ ocular limonene-based nanoemulgel to enhance the efficacy of fluoroquinolones against MRSA associated ocular biofilm infection. The nanoemulsion composed of limonene, Tween®80, propylene glycol at a ratio of 5:4:1 loaded with levofloxacin. The formulated levofloxacin-loaded limonene-based nanoemulsion physiochemical properties namely; droplet size, polydispersity index, zeta potential, and in-vitro drug release were studied and stability over three months was assessed. Furthermore, in-vitro antimicrobial susceptibility was investigated on biofilm-forming MRSA strain through kinetics of killing and biofilm assay. The in-situ nanoemulgel ocular irritation was studied by HET-CAM test. The results demonstrated that levofloxacin-loaded limonene-based nanoemulsion had a particle size of 119 ± 0.321 nm with improved eradicating efficacy of MRSA biofilm, where the MIC of the loaded nanoemulgel was 3.12 mg/ml significantly less than that of drug alone (6.25 mg/ml). HET-CAM test showed no signs of hemorrhage, coagulation, or lysis for the loaded nanoemulgel same as sodium chloride solution (negative control) where its irritation score was zero compared to 9.87 for the positive irritant group (1%w/v sodium lauryl sulfate). In conclusion, the current investigation provided a strong foundation for further studies of limonene nanoemulgel as a potential complementary therapeutic agent against resistant bacterial strains.
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Affiliation(s)
- Mohammed M Mehanna
- Pharmaceutical Technology Department, Faculty of Pharmacy, Beirut Arab University, Beirut, Lebanon.,Industrial Pharmacy Department, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| | - Amina Tarek Mneimneh
- Pharmaceutical Technology Department, Faculty of Pharmacy, Beirut Arab University, Beirut, Lebanon
| | - Khaled Abed El Jalil
- Pharmaceutical Sciences Department, Faculty of Pharmacy, Beirut Arab University, Beirut, Lebanon
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10
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Therapeutic Use of Silver Nanoparticles in the Prevention and Arrest of Dental Caries. Bioinorg Chem Appl 2020; 2020:8882930. [PMID: 32855631 PMCID: PMC7443198 DOI: 10.1155/2020/8882930] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 07/20/2020] [Accepted: 07/31/2020] [Indexed: 12/15/2022] Open
Abstract
Dental caries is one of the major diseases of the oral cavity affecting humans worldwide. Different alternatives have been used for its control, but its incidence and prevalence are still high. On the other hand, silver has been used for centuries due to its antimicrobial properties. With advances in nanotechnology, the use and research in nanomaterials has increased, recently, and silver nanoparticles have become an essential part of the dental practice, giving materials physical and chemical improvements in their properties, used for their antibacterial capacity preventing and arresting dental caries. The objective of this review was to examine the use of silver nanoparticles, in the treatment of dental caries in the remineralization of teeth hard tissues, as well as the antimicrobial potential, cytotoxicity, and long-term effectiveness.
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11
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Marsup P, Yeerong K, Neimkhum W, Sirithunyalug J, Anuchapreeda S, To-anun C, Chaiyana W. Enhancement of Chemical Stability and Dermal Delivery of Cordyceps militaris Extracts by Nanoemulsion. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1565. [PMID: 32784892 PMCID: PMC7466510 DOI: 10.3390/nano10081565] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 07/25/2020] [Accepted: 08/06/2020] [Indexed: 11/18/2022]
Abstract
This study aimed to develop nanoemulsions for enhancing chemical stability and dermal delivery of Cordyceps militaris extracts. C. militaris was extracted by maceration and infusion. The extracts were investigated for cordycepin, phenolic, and flavonoid content. The antioxidant activity was investigated by in vitro spectrophotometric methods. The irritation profile was investigated by hen's egg-chorioallantoic membrane test. Nanoemulsions were developed using high-pressure homogenizer. C. militaris extract was incorporated into the nanoemulsion and investigated for safety, release profile, permeation, and skin retention. The results demonstrated that water extract (CW) contained the significantly highest content of cordycepin, phenolics, and flavonoids, which were responsible for antioxidant activity. CW was the most potent antioxidant. CW possessed comparable 2,2'-diphenyl-1-picrylhydrazyl radical scavenging activity and lipid peroxidation inhibition to l-ascorbic acid (96.9 ± 3.1%) and alpha-tocopherol (87.2 ± 1.0%). Consequently, ten mg/mL of CW was incorporated into nanoemulsions composing of sugar squalene, Tween® 85, and deionized water. Nanoemulsion, which had the smallest internal droplet size (157.1 ± 2.6 nm), enhanced the stability of CW, had no cytotoxicity effect and no skin irritation, released the most CW (0.9 ± 0.0% w/w after 24 h), and delivered the highest CW into the skin layer (33.5 ± 0.7% w/w). Therefore, nanoemulsion was suggested for enhancing the stability and dermal delivery of CW.
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Affiliation(s)
- Pachabadee Marsup
- Master’s Degree Program in Cosmetic Science, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand;
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand; (K.Y.); (J.S.)
| | - Kankanit Yeerong
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand; (K.Y.); (J.S.)
| | - Waranya Neimkhum
- Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Huachiew Chalermprakiet University, Samutprakarn 10250, Thailand;
| | - Jakkapan Sirithunyalug
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand; (K.Y.); (J.S.)
- Research Center of Pharmaceutical Nanotechnology, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Songyot Anuchapreeda
- Research Center of Pharmaceutical Nanotechnology, Chiang Mai University, Chiang Mai 50200, Thailand;
- Division of Clinical Microscopy, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Chaiwat To-anun
- Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Wantida Chaiyana
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand; (K.Y.); (J.S.)
- Research Center of Pharmaceutical Nanotechnology, Chiang Mai University, Chiang Mai 50200, Thailand;
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12
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Melo NFCB, Lima MAB, Stamford TLM, Galembeck A, Flores MA, Campos Takaki GM, Costa Medeiros JA, Stamford‐Arnaud TM, Montenegro Stamford TC. In vivo
and
in vitro
antifungal effect of fungal chitosan nanocomposite edible coating against strawberry phytopathogenic fungi. Int J Food Sci Technol 2020. [DOI: 10.1111/ijfs.14669] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Natália Ferrão Castelo Branco Melo
- Laboratório de Microbiologia dos Alimentos Departamento de Nutrição Centro de Ciências da Saúde Universidade Federal de Pernambuco Av. da Engenharia, s/nº, Cidade Universitária RecifeCEP: 50670‐420 Brazil
| | - Marcos Antônio Barbosa Lima
- Departamento de Biologia Universidade Federal Rural de Pernambuco Rua Manuel de Medeiros, 97, Dois Irmãos RecifeCEP: 52171‐900 Brazil
| | - Tânia Lucia Montenegro Stamford
- Laboratório de Microbiologia dos Alimentos Departamento de Nutrição Centro de Ciências da Saúde Universidade Federal de Pernambuco Av. da Engenharia, s/nº, Cidade Universitária RecifeCEP: 50670‐420 Brazil
| | - André Galembeck
- Laboratório de Compostos Híbridos Interfaces e Colóides Departamento de Química Fundamental Universidade Federal de Pernambuco Av. Jornalista Anibal Fernandes, s/nº, Cidade Universitária RecifeCEP: 50740‐560 Brazil
| | - Miguel A.P. Flores
- Laboratório de Compostos Híbridos Interfaces e Colóides Departamento de Química Fundamental Universidade Federal de Pernambuco Av. Jornalista Anibal Fernandes, s/nº, Cidade Universitária RecifeCEP: 50740‐560 Brazil
| | - Galba Maria Campos Takaki
- Núcleo de Pesquisa em Ciências Ambientais Universidade Católica de Pernambuco Rua do Príncipe, 526, Boa Vista Recife CEP:50050‐900 Brazil
- Departamento de Biologia Universidade Federal Rural de Pernambuco Rua Dom Manuel de Medeiros, s/n ‐ Dois Irmãos Recife CEP: 52171‐900 Brazil
| | - José Alberto Costa Medeiros
- Laboratório de Microbiologia dos Alimentos Departamento de Nutrição Centro de Ciências da Saúde Universidade Federal de Pernambuco Av. da Engenharia, s/nº, Cidade Universitária RecifeCEP: 50670‐420 Brazil
| | - Thatiana Montenegro Stamford‐Arnaud
- Laboratório de Microbiologia Aplicada Centro de Ciências Medicas Microbiologia e Imunologia Universidade Federal de PernambucoAv. da Engenharia, s/nº, 2º andar, Cidade Universitária RecifeCEP: 50.670‐420 Brazil
| | - Thayza Christina Montenegro Stamford
- Laboratório de Microbiologia Aplicada Centro de Ciências Medicas Microbiologia e Imunologia Universidade Federal de PernambucoAv. da Engenharia, s/nº, 2º andar, Cidade Universitária RecifeCEP: 50.670‐420 Brazil
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13
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Fakhruddin KS, Egusa H, Ngo HC, Panduwawala C, Pesee S, Samaranayake LP. Clinical efficacy and the antimicrobial potential of silver formulations in arresting dental caries: a systematic review. BMC Oral Health 2020; 20:160. [PMID: 32493272 PMCID: PMC7268710 DOI: 10.1186/s12903-020-01133-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 05/06/2020] [Indexed: 12/13/2022] Open
Abstract
Background The use of silver-formulation as microbicide to arrest dentinal caries is gaining popularity. The primary objective of the present appraisal was to systematically review the clinical (in vivo) applications and antimicrobial potential of silver-containing formulations in arresting dentinal caries. Our secondary aim was to sum up the available in vitro applications of silver-containing formulations against cariogenic microbes isolated from dentine lesions. Methods Ovid MEDLINE, EBSCO host, Web of Science, and Cochrane Library databases was searched between January 2009–May 2019. Results In vivo: We observed conflicting evidence of antimicrobial efficacy of SDF on a diverse array of microbial taxa present in carious dentine of primary and permanent teeth. Moreover, there is insufficient evidence on the application of AgNP-fluoride as an effective microbicidal against cariogens of dentine lesions. In vitro: We found a good evidence of microbicidal efficacy of silver diamine fluoride (SDF) on selective cariogenic microbes in human dentine model. Additionally, a good evidence was noted of in vitro application of silver nanoparticles (AgNPs) as a useful microbicidal against S. mutans adhesion, growth and subsequent biofilm formation in human dentine models. Conclusions Taken together, in vitro evidence indicates the promising antimicrobial potential of silver-based formulations (SDF and nanosilver) against the predominant cariogenic flora, particularly from dentine lesions. Post-treatment clinical data of either the bactericidal and bacteriostatic effects of SDF or nanosilver are sparse. Furthermore, the current understanding of the specific size, concentration, antimicrobial mechanisms, and toxicological aspects of nano-silver compounds is inadequate to draw firm conclusions on their clinical utility.
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Affiliation(s)
- Kausar Sadia Fakhruddin
- Department of Preventive and Restorative Dentistry, M28-125, College of Dental Medicine, University of Sharjah, Sharjah, 27272, United Arab Emirates.,Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai City, 980-8575, Japan
| | - Hiroshi Egusa
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai City, 980-8575, Japan.
| | - Hien Chi Ngo
- Department of Preventive and Restorative Dentistry, M28-125, College of Dental Medicine, University of Sharjah, Sharjah, 27272, United Arab Emirates
| | - Chamila Panduwawala
- Department of Preventive and Restorative Dentistry, M28-125, College of Dental Medicine, University of Sharjah, Sharjah, 27272, United Arab Emirates
| | - Siripen Pesee
- Faculty of Dentistry, Department of Oral Diagnostic Science, Faculty of Dentistry, Thammasat University, Pathum Thani, Thailand
| | - Lakshman Perera Samaranayake
- Department of Preventive and Restorative Dentistry, M28-125, College of Dental Medicine, University of Sharjah, Sharjah, 27272, United Arab Emirates. .,The University of Hong Kong, Hong Kong Special Administrative Region, China.
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14
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Yin IX, Zhao IS, Mei ML, Li Q, Yu OY, Chu CH. Use of Silver Nanomaterials for Caries Prevention: A Concise Review. Int J Nanomedicine 2020; 15:3181-3191. [PMID: 32440117 PMCID: PMC7212989 DOI: 10.2147/ijn.s253833] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 04/22/2020] [Indexed: 11/23/2022] Open
Abstract
Objective The aim of this concise review is to summarize the use of silver nanomaterials for caries prevention. Methods Two researchers independently performed a literature search of publications in English using Embase, Medline, PubMed, and Scopus databases. The keywords used were (silver nanoparticles OR AgNPs OR nano silver OR nano-silver) AND (caries OR tooth decay OR remineralisation OR remineralization). They screened the title and abstract to identify potentially eligible publications. They then retrieved the full texts of the identified publications to select original research reporting silver nanomaterials for caries prevention. Results The search identified 376 publications, and 66 articles were included in this study. The silver nanomaterials studied were categorized as resin with silver nanoparticles (n=31), silver nanoparticles (n=21), glass ionomer cement with silver nanoparticles (n=7), and nano silver fluoride (n=7). Most (59/66, 89%) studies investigated the antibacterial properties, and they all found that silver nanomaterials inhibited the adhesion and growth of cariogenic bacteria, mainly Streptococcus mutans. Although silver nanomaterials were used as anti-caries agents, only 11 (11/66, 17%) studies reported the effects of nanomaterials on the mineral content of teeth. Eight of them are laboratory studies, and they found that silver nanomaterials prevented the demineralization of enamel and dentin under an acid or cariogenic biofilm challenge. The remaining three are clinical trials that reported that silver nanomaterials prevented and arrested caries in children. Conclusion Silver nanoparticles have been used alone or with resin, glass ionomer, or fluoride for caries prevention. Silver nanomaterials inhibit the adhesion and growth of cariogenic bacteria. They also impede the demineralization of enamel and dentin.
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Affiliation(s)
- Iris Xiaoxue Yin
- School of Dentistry, Shenzhen University Health Science Center, Shenzhen, People's Republic of China.,HKU Shenzhen Institute of Research and Innovation, Shenzhen, People's Republic of China.,Faculty of Dentistry, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Irene Shuping Zhao
- School of Dentistry, Shenzhen University Health Science Center, Shenzhen, People's Republic of China
| | - May Lei Mei
- Faculty of Dentistry, University of Otago, Otago, New Zealand
| | - Quanli Li
- College of Stomatology, Anhui Medical University, Hefei, People's Republic of China
| | - Ollie Yiru Yu
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Chun Hung Chu
- HKU Shenzhen Institute of Research and Innovation, Shenzhen, People's Republic of China.,Faculty of Dentistry, The University of Hong Kong, Hong Kong, People's Republic of China
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15
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Laothaweerungsawat N, Neimkhum W, Anuchapreeda S, Sirithunyalug J, Chaiyana W. Transdermal delivery enhancement of carvacrol from Origanum vulgare L. essential oil by microemulsion. Int J Pharm 2020; 579:119052. [DOI: 10.1016/j.ijpharm.2020.119052] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Revised: 12/23/2019] [Accepted: 01/15/2020] [Indexed: 12/15/2022]
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16
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Freire PLL, Albuquerque AJR, Sampaio FC, Galembeck A, Flores MAP, Stamford TCM, Rosenblatt A. AgNPs: The New Allies Against S. Mutans Biofilm - A Pilot Clinical Trial and Microbiological Assay. Braz Dent J 2018; 28:417-422. [PMID: 29160391 DOI: 10.1590/0103-6440201600994] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 05/31/2017] [Indexed: 02/05/2023] Open
Abstract
The purpose of this study was to evaluate the antimicrobial properties of a new formulation containing silver nanoparticles, named Nano Silver Fluoride (NSF), to inhibit Streptococcus mutans biofilm formation on children's dental enamel. The variations in dental biofilm pH and in the Simplified-Oral-Hygiene-Index (OHI-S) also were evaluated after the treatment with NSF. This was a randomized, double-blind, crossover and prospective pilot clinical trial study in which 12 schoolchildren, aged between 7-8 years, had their dental enamel treated with two solutions: S1 - Nano Silver Fluoride and S2 - negative control (saline solution), in different experimental moments. The dental biofilm adhered to enamel treated with NSF had lower values of S. mutans viability (absorbance) and colony forming units (CFU) than the S0 (baseline) and S2. There was a statistically significant difference between the OHI-S mean values of S0 and S1. There were no differences between the biofilm pH (both before and after the use of the test substances) and among the different groups. These properties suggest that NSF has bactericidal effect against S. mutans biofilm and it may be used for clinical control and prevention of dental biofilm formation.
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Affiliation(s)
- Priscila L L Freire
- FOP - Faculdade de Odontologia de Pernambuco, UPE - Universidade de Pernambuco, Recife, PE, Brazil
| | | | - Fabio C Sampaio
- UFPB - Universidade Federal da Paraíba, João Pessoa, PB, Brazil
| | - André Galembeck
- UFPE - Universidade Federal de Perna mbuco, Recife, PE, Brazil
| | | | | | - Aronita Rosenblatt
- FOP - Faculdade de Odontologia de Pernambuco, UPE - Universidade de Pernambuco, Recife, PE, Brazil
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17
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Effects of a New Nano-Silver Fluoride-Containing Dentifrice on Demineralization of Enamel and Streptococcus mutans Adhesion and Acidogenicity. Int J Dent 2018; 2018:1351925. [PMID: 29853891 PMCID: PMC5964412 DOI: 10.1155/2018/1351925] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 03/13/2018] [Accepted: 04/01/2018] [Indexed: 01/03/2023] Open
Abstract
An experimental dentifrice containing nano-silver fluoride (NSF) and a sodium fluoride (NaF) toothpaste were tested in vitro, against S. mutans, to evaluate the minimal inhibitory concentration (MIC), minimal bactericidal concentration (MBC), antiadherence, antiacid, enamel microhardness, and OCT. The microdilution technique was used to determine the MIC and MBC. Fragments of deciduous enamel were treated with dentifrice slurries, containing bacterial suspension and PBS-treated saliva. The quantification of the microorganisms that adhered to the enamel was determined after 24 hours of incubation, and media pH readings were performed after 2 hours and 24 hours. Deciduous teeth were evaluated for microhardness and OCT during 14 days of pH cycling. Data were statistically analyzed using Student's t-test, Mann-Whitney U test, ANOVA, and Tukey tests at 5% of significance. Dentifrices containing NSF presented a lower MIC and higher statistically significant results compared to NaF dentifrices with respect to preventing bacterial adhesion and pH decreases. NSF and NaF dentifrices showed the same ability to avoid enamel demineralization corroborated by the OCT images. The NSF formulation had a better antibacterial effect compared to NaF dentifrices and similar action on the demineralization of enamel indicating their potential effectiveness to prevent caries.
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18
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Somwongin S, Chantawannakul P, Chaiyana W. Antioxidant activity and irritation property of venoms from Apis species. Toxicon 2018; 145:32-39. [PMID: 29499244 DOI: 10.1016/j.toxicon.2018.02.049] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 01/28/2018] [Accepted: 02/26/2018] [Indexed: 01/31/2023]
Abstract
Pharmacological effects of bee venom has been reported, however, it has been restricted to the bee venom collected from European honey bee (Apis mellifera). The aim of the present study was to compare the antioxidant activities and irritation properties of venoms collected from four different Apis species in Thailand, which includes Apis cerena (Asian cavity nesting honeybee), Apis florea (dwarf honeybee), Apis dorsata (giant honeybee), and A. mellifera. Melittin content of each bee venom extracts was investigated by using high-performance liquid chromatography. Ferric reducing antioxidant power, 2, 2'-azinobis (3-ethylbenzothiazoline-6-sulfonic acid), and 1, 1-diphenyl-2-picrylhydrazyl assay were used to determine the antioxidant activity, whereas, hen's egg test chorioallantoic membrane assay was used to determine the irritation property of each bee venom extracts. Melittin was the major constituent in all bee venom extracts. The melittin content in A. dorsata, A. mellifera, A. florea, and A. cerena were 95.8 ± 3.2%, 76.5 ± 1.9%, 66.3 ± 8.6%, and 56.8 ± 1.8%, respectively. Bee venom extract from A. dorsata possessed the highest antioxidant activity with the inhibition of 41.1 ± 2.2% against DPPH, Trolox equivalent antioxidant capacity of 10.21 ± 0.74 mM Trolox/mg and equivalent concentration (EC1) of 0.35 ± 0.02 mM FeSO4/mg. Bee venom extract from A. mellifera exhibited the highest irritation, followed by A. cerena, A. dorsata, and A. florea, respectively. Melittin was the compound responsible for the irritation property of bee venom extracts since it could induce severe irritation (irritation score was 13.7 ± 0.5, at the concentration of 2 mg/ml). The extract from A. dorsata which possessed the highest antioxidant activity showed no irritation up to the concentration of 0.1 mg/ml. Therefore, bee venom extract from A. dorsata at the concentration not more than 0.1 mg/ml would be suggested for using as cosmetic ingredients since it possessed the highest antioxidant activity with no irritation. This study is the first report to compare the bee venom extracts from different Apis species and display their potential application of bee venom extracts in cosmetic products.
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Affiliation(s)
- Suvimol Somwongin
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Panuwan Chantawannakul
- Bee Protection Laboratory, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand; International College of Digital Innovation, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Wantida Chaiyana
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai, 50200, Thailand; Research Center of Pharmaceutical Nanotechnology, Chiang Mai University, Chiang Mai, 50200, Thailand.
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19
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Ghaseminezhad SM, Shojaosadati SA, Meyer RL. Ag/Fe3O4 nanocomposites penetrate and eradicate S. aureus biofilm in an in vitro chronic wound model. Colloids Surf B Biointerfaces 2018; 163:192-200. [DOI: 10.1016/j.colsurfb.2017.12.035] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 12/16/2017] [Accepted: 12/19/2017] [Indexed: 02/01/2023]
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20
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Chaiyana W, Punyoyai C, Somwongin S, Leelapornpisid P, Ingkaninan K, Waranuch N, Srivilai J, Thitipramote N, Wisuitiprot W, Schuster R, Viernstein H, Mueller M. Inhibition of 5α-Reductase, IL-6 Secretion, and Oxidation Process of Equisetum debile Roxb. ex Vaucher Extract as Functional Food and Nutraceuticals Ingredients. Nutrients 2017; 9:nu9101105. [PMID: 28994714 PMCID: PMC5691721 DOI: 10.3390/nu9101105] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Revised: 09/21/2017] [Accepted: 10/03/2017] [Indexed: 11/25/2022] Open
Abstract
This study aims to investigate the biological activities related to hair loss of Equisetum debile extracts, including 5α-reductase inhibition, interleukin-6 (IL-6) secretion reduction, and anti-oxidation. E. debile extracts were obtained by maceration in various solvents. Crude extract (CE) was obtained by maceration in 95% ethanol. Chlorophyll-free extract (CF) was the CE which of the chlorophyll has been removed by electrocoagulation. Hexane extract (HE), ethyl acetate extract (EA), and ethanolic extract (ET) were fraction extracts obtained from maceration in hexane, ethyl acetate, and 95% ethanol, respectively. The extracts were investigated for inhibitory activity against 5α-reductase and IL-6 secretion. Total phenolic contents (TPC) were investigated and antioxidant activities were determined by means of 2,2′-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS), 2,2′-diphenyl-1-picrylhydrazyl (DPPH), and ferric reducing antioxidant power (FRAP) assays. The inhibition of lipid peroxidation was determined by the ferric thiocyanate method. The cytotoxicity of the extracts on dermal papilla cells and irritation test by hen's egg test chorioallantoic membrane assay were also investigated. All extracts could inhibit 5α-reductase and decrease IL-6 secretion in lipopolysaccharide-stimulated macrophage. The antioxidant activity of E. debile extracts was directly related to their TPC. ET which contained the highest TPC (68.8 ± 6.7 mg GA/g) showed the highest equivalent concentration (EC1) of 289.1 ± 26.4 mM FeSO4/g, TEAC of 156.6 ± 34.6 mM Trolox/g, and 20.0 ± 6.0% DPPH inhibition. However, EA exhibited the highest inhibition against lipid peroxidation (57.2 ± 0.4%). In addition, EA showed no cytotoxicity on dermal papilla cell line and no irritation on chorioallantoic membrane of hen’s eggs. In conclusion, EA was suggested as the most attractive ingredients for functional food and nutraceuticals because of the high inhibitory activity against 5α-reductase, IL-6 secretion, and lipid peroxidation inhibition.
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Affiliation(s)
- Wantida Chaiyana
- Department of Pharmaceutical Science, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand.
| | - Chanun Punyoyai
- Department of Pharmaceutical Science, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand.
| | - Suvimol Somwongin
- Department of Pharmaceutical Science, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand.
| | - Pimporn Leelapornpisid
- Department of Pharmaceutical Science, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand.
| | - Kornkanok Ingkaninan
- Department of Pharmaceutical Chemistry and Pharmacognosy, Faculty of Pharmaceutical Sciences, Naresuan University, Phitsanulok 65000, Thailand.
| | - Neti Waranuch
- Department of Pharmaceutical Chemistry and Pharmacognosy, Faculty of Pharmaceutical Sciences, Naresuan University, Phitsanulok 65000, Thailand.
| | - Jukkarin Srivilai
- Department of Pharmaceutical Chemistry and Pharmacognosy, Faculty of Pharmaceutical Sciences, Naresuan University, Phitsanulok 65000, Thailand.
| | - Natthawut Thitipramote
- School of Cosmetic Science, Mae Fah Luang University, Muang, Chiang Rai 57100, Thailand.
| | - Wudtichai Wisuitiprot
- Department of Thai Traditional Medicine, Sirindhorn College of Public Health, Phitsanulok 65130, Thailand.
| | - Roswitha Schuster
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Althanstrasse 14, Vienna 1090, Austria.
| | - Helmut Viernstein
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Althanstrasse 14, Vienna 1090, Austria.
| | - Monika Mueller
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Althanstrasse 14, Vienna 1090, Austria.
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21
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Noronha VT, Paula AJ, Durán G, Galembeck A, Cogo-Müller K, Franz-Montan M, Durán N. Silver nanoparticles in dentistry. Dent Mater 2017; 33:1110-1126. [PMID: 28779891 DOI: 10.1016/j.dental.2017.07.002] [Citation(s) in RCA: 142] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 06/11/2017] [Accepted: 07/08/2017] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Silver nanoparticles (AgNPs) have been extensively studied for their antimicrobial properties, which provide an extensive applicability in dentistry. Because of this increasing interest in AgNPs, the objective of this paper was to review their use in nanocomposites; implant coatings; pre-formulation with antimicrobial activity against cariogenic pathogens, periodontal biofilm, fungal pathogens and endodontic bacteria; and other applications such as treatment of oral cancer and local anesthesia. Recent achievements in the study of the mechanism of action and the most important toxicological aspects are also presented. METHODS Systematic searches were carried out in Web of Science (ISI), Google, PubMed, SciFinder and EspaceNet databases with the keywords "silver nano* or AgNP*" and "dentist* or dental* or odontol*". RESULTS A total of 155 peer-reviewed articles were reviewed. Most of them were published in the period of 2012-2017, demonstrating that this topic currently represents an important trend in dentistry research. In vitro studies reveal the excellent antimicrobial activity of AgNPs when associated with dental materials such as nanocomposites, acrylic resins, resin co-monomers, adhesives, intracanal medication, and implant coatings. Moreover, AgNPs were demonstrated to be interesting tools in the treatment of oral cancers due to their antitumor properties. SIGNIFICANCE The literature indicates that AgNPs are a promising system with important features such as antimicrobial, anti-inflammatory and antitumor activity, and a potential carrier in sustained drug delivery. However, there are some aspects of the mechanisms of action of AgNPs, and some important toxicological aspects arising from the use of this system that must be completely elucidated.
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Affiliation(s)
- Victor T Noronha
- Solid-Biological Interface Group (SolBIN), Department of Physics, Universidade Federal do Ceará, Fortaleza, CE, Brazil
| | - Amauri J Paula
- Solid-Biological Interface Group (SolBIN), Department of Physics, Universidade Federal do Ceará, Fortaleza, CE, Brazil.
| | - Gabriela Durán
- Faculdade de Odontologia, Pontifícia Universidade Católica de Campinas, Campinas, SP, Brazil
| | - Andre Galembeck
- Fundamental Chemistry Department, Universidade Federal de Pernambuco, Recife, PE, Brazil; Centro de Tecnologias Estratégicas do Nordeste (CETENE), Campus MCTI Nordeste, Recife, PE, Brazil
| | - Karina Cogo-Müller
- Faculdade de Ciências Farmacêuticas, Universidade Estadual de Campinas, Campinas, SP, Brazil; Department of Physiological Sciences, Faculdade de Odontologia de Piracicaba, Universidade Estadual de Campinas, Campinas, SP, Brazil
| | - Michelle Franz-Montan
- Department of Physiological Sciences, Faculdade de Odontologia de Piracicaba, Universidade Estadual de Campinas, Campinas, SP, Brazil.
| | - Nelson Durán
- Department of Physiological Sciences, Faculdade de Odontologia de Piracicaba, Universidade Estadual de Campinas, Campinas, SP, Brazil; NanoBioss Laboratory, Universidade Estadual de Campinas, SP, Brazil; National Nanotechnology Laboratory (LNNano) CNPEM, Campinas, SP, Brazil
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22
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Hamed S, Emara M, Shawky RM, El-domany RA, Youssef T. Silver nanoparticles: Antimicrobial activity, cytotoxicity, and synergism with N-acetyl cysteine. J Basic Microbiol 2017; 57:659-668. [DOI: 10.1002/jobm.201700087] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 05/01/2017] [Accepted: 05/06/2017] [Indexed: 01/23/2023]
Affiliation(s)
- Selwan Hamed
- Faculty of Pharmacy, Department of Microbiology and Immunology; Helwan University; Cairo Egypt
| | - Mohamed Emara
- Faculty of Pharmacy, Department of Microbiology and Immunology; Helwan University; Cairo Egypt
| | - Riham M. Shawky
- Faculty of Pharmacy, Department of Microbiology and Immunology; Helwan University; Cairo Egypt
| | - Ramadan A. El-domany
- Faculty of Pharmacy, Department of Microbiology and immunology; Kafr El Sheikh University; Egypt
| | - Tareq Youssef
- National Institute of Laser Enhanced Sciences; Cairo University; Giza Egypt
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23
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Samanta A, Takkar S, Kulshreshtha R, Nandan B, Srivastava RK. Nano-silver stabilized Pickering emulsions and their antimicrobial electrospun fibrous matrices. Biomed Phys Eng Express 2017. [DOI: 10.1088/2057-1976/aa6c32] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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24
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Wang S, Wu J, Yang H, Liu X, Huang Q, Lu Z. Antibacterial activity and mechanism of Ag/ZnO nanocomposite against anaerobic oral pathogen Streptococcus mutans. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:23. [PMID: 28044252 DOI: 10.1007/s10856-016-5837-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 12/19/2016] [Indexed: 06/06/2023]
Abstract
Dental caries is a widespread disease mainly caused by the anaerobic oral pathogen Streptococcus mutans (S. mutans). Ag/ZnO nanocomposite is an efficient antibacterial agent because of its high antibacterial activity and low cytotoxicity. In this study, rod-like Ag/ZnO nanocomposite was synthesized through a deposition-precipitation method and characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The activity of Ag/ZnO nanocomposite against S. mutans was evaluated by determining the minimal inhibitory concentration, minimum bactericidal concentration and growth inhibition curve. The results showed that Ag/ZnO nanocomposite displayed higher activity against S. mutans compared with pure ZnO nanorods. Moreover, the antibacterial mechanism was investigated by determining the bacterial membrane potential, release of K+, intracellular reactive oxygen generation and lipid peroxidation. Disruption of membrane function and oxidation of biomacromolecules played important role in the antibacterial action of Ag/ZnO nanocomposite. This work proposes a potentially effective dental antibacterial agent against the dental caries-causing S. mutans.
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Affiliation(s)
- Shilei Wang
- School of Chemical Engineering and Pharmacy, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Xiongchu Avenue, Wuhan, 430073, PR China
| | - Jie Wu
- School of Chemical Engineering and Pharmacy, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Xiongchu Avenue, Wuhan, 430073, PR China
| | - Hao Yang
- School of Chemical Engineering and Pharmacy, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Xiongchu Avenue, Wuhan, 430073, PR China
| | - Xiangyu Liu
- School of Chemical Engineering and Pharmacy, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Xiongchu Avenue, Wuhan, 430073, PR China
| | - Qiaomu Huang
- School of Chemical Engineering and Pharmacy, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Xiongchu Avenue, Wuhan, 430073, PR China
| | - Zhong Lu
- School of Chemical Engineering and Pharmacy, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Xiongchu Avenue, Wuhan, 430073, PR China.
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25
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Silver Nanocomposite Biosynthesis: Antibacterial Activity against Multidrug-Resistant Strains of Pseudomonas aeruginosa and Acinetobacter baumannii. Molecules 2016; 21:molecules21091255. [PMID: 27657031 PMCID: PMC6274225 DOI: 10.3390/molecules21091255] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 09/09/2016] [Accepted: 09/14/2016] [Indexed: 11/22/2022] Open
Abstract
Bacterial resistance is an emerging public health issue that is disseminated worldwide. Silver nanocomposite can be an alternative strategy to avoid Gram-positive and Gram-negative bacteria growth, including multidrug-resistant strains. In the present study a silver nanocomposite was synthesized, using a new green chemistry process, by the addition of silver nitrate (1.10−3 mol·L−1) into a fermentative medium of Xanthomonas spp. to produce a xanthan gum polymer. Transmission electron microscopy (TEM) was used to evaluate the shape and size of the silver nanoparticles obtained. The silver ions in the nanocomposite were quantified by flame atomic absorption spectrometry (FAAS). The antibacterial activity of the nanomaterial against Escherichia coli (ATCC 22652), Enterococcus faecalis (ATCC 29282), Pseudomonas aeruginosa (ATCC 27853) and Staphylococcus aureus (ATCC 25923) was carried out using 500 mg of silver nanocomposite. Pseudomonas aeruginosa and Acinetobacter baumannii multidrug-resistant strains, isolated from hospitalized patients were also included in the study. The biosynthesized silver nanocomposite showed spherical nanoparticles with sizes smaller than 10 nm; 1 g of nanocomposite contained 49.24 µg of silver. Multidrug-resistant strains of Pseudomonas aeruginosa and Acinetobacter baumannii, and the other Gram-positive and Gram-negative bacteria tested, were sensitive to the silver nanocomposite (10–12.9 mm of inhibition zone). The biosynthesized silver nanocomposite seems to be a promising antibacterial agent for different applications, namely biomedical devices or topical wound coatings.
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26
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Freire PLL, Albuquerque AJR, Farias IAP, da Silva TG, Aguiar JS, Galembeck A, Flores MAP, Sampaio FC, Stamford TCM, Rosenblatt A. Antimicrobial and cytotoxicity evaluation of colloidal chitosan - silver nanoparticles - fluoride nanocomposites. Int J Biol Macromol 2016; 93:896-903. [PMID: 27642129 DOI: 10.1016/j.ijbiomac.2016.09.052] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 09/08/2016] [Accepted: 09/15/2016] [Indexed: 11/26/2022]
Abstract
The present study aimed to evaluate the antimicrobial activity and cytotoxicity of colloidal chitosan - silver nanoparticle - fluoride nanocomposites (CChAgNpFNc), with different silver nanoparticle shapes and sizes. The syntheses of CChAgNpFNc were performed with silver nitrate added to a chitosan solution, addition of a sodium borohydride solution and solid sodium fluoride. Solution of ascorbic acid was added to synthesize larger silver nanoparticles. CChAgNpFNc obtained: S1- 100% spherical, 8.7±3.1nm; S2- 97% spherical, 15.0±7.9nm and 2.5% triangular, 22.2±9.5nm; S3- 77.3% spherical, 31.8±10.4nm, 15.9% triangular, 27.1±10.1nm and 6.8% elliptical, 33.2±7.8nm; and S4- 75.2% spherical, 43.2±14.3nm; 23.3% triangular 38.2±14.8nm, and 1.5% elliptical 38.4±11.6nm. The CChAgNpFNc showed antimicrobial activity against Staphylococcus aureus, Escherichia coli, Enterococcus faecalis, Pseudomonas aeruginosa and Candida albicans, by microdilution technique. The influence on the growth of microorganisms was evaluated using a fluorescence assay, and showed an increasing lag phase and a decreasing log phase. Cytotoxicity was investigated using Artemia salina and MTT assays. The S3 and S4 samples exhibited low cytotoxicity. The S1 and S2 samples inhibited murine macrophages and revealed lethal dose concentrations above 1000mg/mL that were classified as moderately toxic. Thus, CChAgNpFNc are potential options for the control of multiple-drug-resistant microorganisms and do not represent substantial risks to human health.
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Affiliation(s)
- Priscila L L Freire
- Faculdade de Odontologia, Universidade de Pernambuco, Av. Gal. Newton Cavalcanti, n° 1650, Camaragibe, Pernambuco, CEP: 54.753-020, Brazil
| | - Allan J R Albuquerque
- Universidade Federal da Paraíba - Campus João Pessoa, Centro de Ciências da Saúde, Cidade Universitária, João Pessoa, Paraíba, CEP: 58.051-900, Brazil
| | - Isabela A P Farias
- Universidade Federal da Paraíba - Campus João Pessoa, Centro de Ciências da Saúde, Cidade Universitária, João Pessoa, Paraíba, CEP: 58.051-900, Brazil
| | - Teresinha Gonçalves da Silva
- Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, n° 1235, Cidade Universitária, Recife, Pernambuco, CEP: 50.670-901, Brazil
| | - Jaciana Santos Aguiar
- Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, n° 1235, Cidade Universitária, Recife, Pernambuco, CEP: 50.670-901, Brazil
| | - André Galembeck
- Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, n° 1235, Cidade Universitária, Recife, Pernambuco, CEP: 50.670-901, Brazil; Centro de Tecnologias Estratégicas do Nordeste, Av. Prof. Luiz Freire, n°1, Cidade Universitária, Recife, Pernambuco, CEP 50.740-540, Brazil
| | - Miguel A P Flores
- Centro de Tecnologias Estratégicas do Nordeste, Av. Prof. Luiz Freire, n°1, Cidade Universitária, Recife, Pernambuco, CEP 50.740-540, Brazil
| | - Fabio C Sampaio
- Universidade Federal da Paraíba - Campus João Pessoa, Centro de Ciências da Saúde, Cidade Universitária, João Pessoa, Paraíba, CEP: 58.051-900, Brazil
| | | | - Aronita Rosenblatt
- Faculdade de Odontologia, Universidade de Pernambuco, Av. Gal. Newton Cavalcanti, n° 1650, Camaragibe, Pernambuco, CEP: 54.753-020, Brazil
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27
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Bakare R, Hawthrone S, Vails C, Gugssa A, Karim A, Stubbs J, Raghavan D. Antimicrobial and cell viability measurement of bovine serum albumin capped silver nanoparticles (Ag/BSA) loaded collagen immobilized poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) film. J Colloid Interface Sci 2016; 465:140-8. [DOI: 10.1016/j.jcis.2015.11.041] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 11/17/2015] [Accepted: 11/18/2015] [Indexed: 10/22/2022]
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28
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Dananjaya SHS, Kulatunga DCM, Godahewa GI, Lee J, De Zoysa M. Comparative study of preparation, characterization and anticandidal activities of a chitosan silver nanocomposite (CAgNC) compared with low molecular weight chitosan (LMW-chitosan). RSC Adv 2016. [DOI: 10.1039/c6ra03917k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A chitosan-silver nanocomposite (CAgNC) was synthesized in a green manner using low molecular weight chitosan (LMW-chitosan) and silver nitrate without applying external chemical reducing agents.
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Affiliation(s)
- S. H. S. Dananjaya
- College of Veterinary Medicine and Research Institute of Veterinary Medicine
- Chungnam National University
- Daejeon
- Republic of Korea
| | - D. C. M. Kulatunga
- College of Veterinary Medicine and Research Institute of Veterinary Medicine
- Chungnam National University
- Daejeon
- Republic of Korea
| | - G. I. Godahewa
- Department of Marine Life Sciences and Fish Vaccine Research Center
- Jeju National University
- Republic of Korea
| | - Jehee Lee
- Department of Marine Life Sciences and Fish Vaccine Research Center
- Jeju National University
- Republic of Korea
| | - Mahanama De Zoysa
- College of Veterinary Medicine and Research Institute of Veterinary Medicine
- Chungnam National University
- Daejeon
- Republic of Korea
- Department of Marine Life Sciences and Fish Vaccine Research Center
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29
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Zhang C, Hu Z, Deng B. Silver nanoparticles in aquatic environments: Physiochemical behavior and antimicrobial mechanisms. WATER RESEARCH 2016; 88:403-427. [PMID: 26519626 DOI: 10.1016/j.watres.2015.10.025] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Revised: 10/05/2015] [Accepted: 10/17/2015] [Indexed: 05/22/2023]
Abstract
Nanosilver (silver nanoparticles or AgNPs) has unique physiochemical properties and strong antimicrobial activities. This paper provides a comprehensive review of the physicochemical behavior (e.g., dissolution and aggregation) and antimicrobial mechanisms of nanosilver in aquatic environments. The inconsistency in calculating the Gibbs free energy of formation of nanosilver [ΔGf(AgNPs)] in aquatic environments highlights the research needed to carefully determine the thermodynamic stability of nanosilver. The dissolutive release of silver ion (Ag(+)) in the literature is often described using a pseudo-first-order kinetics, but the fit is generally poor. This paper proposes a two-stage model that could better predict silver ion release kinetics. The theoretical analysis suggests that nanosilver dissolution could occur under anoxic conditions and that nanosilver may be sulfidized to form silver sulfide (Ag2S) under strict anaerobic conditions, but more investigation with carefully-designed experiments is required to confirm the analysis. Although silver ion release is likely the main antimicrobial mechanism of nanosilver, the contributions of (ion-free) AgNPs and reactive oxygen species (ROS) generation to the overall toxicity of nanosilver must not be neglected. Several research directions are proposed to better understand the dissolution kinetics of nanosilver and its antimicrobial mechanisms under various aquatic environmental conditions.
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Affiliation(s)
- Chiqian Zhang
- Department of Civil and Environmental Engineering, University of Missouri, Columbia, MO 65211, USA.
| | - Zhiqiang Hu
- Department of Civil and Environmental Engineering, University of Missouri, Columbia, MO 65211, USA
| | - Baolin Deng
- Department of Civil and Environmental Engineering, University of Missouri, Columbia, MO 65211, USA
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30
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Green Synthesis of Silver Nano-particles by Macrococcus bovicus and Its Immobilization onto Montmorillonite Clay for Antimicrobial Functionality. Appl Biochem Biotechnol 2015; 176:2225-41. [DOI: 10.1007/s12010-015-1710-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Accepted: 06/08/2015] [Indexed: 12/27/2022]
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