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Bagirova M, Dinparvar S, Allahverdiyev AM, Unal K, Abamor ES, Novruzova M. Investigation of antileshmanial activities of Cuminum cyminum based green silver nanoparticles on L. tropica promastigotes and amastigotes in vitro. Acta Trop 2020; 208:105498. [PMID: 32428676 DOI: 10.1016/j.actatropica.2020.105498] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 04/13/2020] [Accepted: 04/13/2020] [Indexed: 02/08/2023]
Abstract
Leishmaniasis is one of the most important parasitic diseases, which is caused by Leishmania species. Nowadays; although pentavalent antimonials are used as the basic treatment option for Cutaneous Leishmaniasis, high cost, toxicity and resistance of the parasites to the medication over time are some important limitations causing several problems in the treatment. In recent years, the progress in the field of green nanotechnology provides the development of green nanoparticle-based treatment methods for Cutaneous Leishmaniasis. The importance of green nanoparticles has gradually increased due to their special reductive, stabilizing, antioxidant and non-toxic properties. Although there are many studies based on green nanoparticles against Leishmania parasites, we have not found any research about antileishmanial activities of biosynthesized silver nanoparticles (Bio-AgNPs) using Cuminum cyminum L (Cumin) seed extract. Therefore for the first time in this study in vitro antileishmanial effects of Bio-AgNPs prepared from Cumin seed extract were examined on L. tropica promastigote and amastigote forms and their efficacies were compared with chemically synthetized AgNPs. During the experiments, antileishmanial effects of synthetized nanoparticles were determined on both promastigote and amastigote forms of Leishmania parasites by detecting different parameters such as proliferation, infection index and produced nitric oxide (NO) amounts from macrophages. According to the results, it was shown that Bio-AgNPs and AgNPs excessively inhibited L. tropica promastigotes and amastigotes by significantly decreasing proliferation rates of promastigotes and metabolic activities of amastigotes, as well. Moreover, infection index rates of macrophages revealed remarkable anti-amastigote performances of Bio-AgNPs. Besides, Bio-AgNPs stimulated macrophages to release NO to kill Leishmania parasites. Consequently, for the first time, Bio-AgNPs were found to be more effective on both forms of Leishmania parasites than AgNPs. Obtained results indicated high antileishmanial potential of green nanoparticles on L. tropica parasites, causative agents of Cutaneous Leishmaniasis. Thus, obtained results demonstrated that green nanoparticles can lead to the development of new, safer, stable and more effective antileishmanial formulations against Cutaneous Leishmaniasis.
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Affiliation(s)
- Melahat Bagirova
- Department of Bioengineering, Yıldız Technical University, Esenler, Istanbul, Turkey
| | - Sahar Dinparvar
- Department of Bioengineering, Yıldız Technical University, Esenler, Istanbul, Turkey
| | - Adil M Allahverdiyev
- Department of Bioengineering, Yıldız Technical University, Esenler, Istanbul, Turkey.
| | - Kubra Unal
- Department of Bioengineering, Yıldız Technical University, Esenler, Istanbul, Turkey
| | - Emrah Sefik Abamor
- Department of Bioengineering, Yıldız Technical University, Esenler, Istanbul, Turkey
| | - Metanet Novruzova
- Departmant of Medical Microbiology and Immunology, Azerbaijan Medical University, Baku, Azerbaijan
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Abstract
OBJECTIVES To investigate the potential cytotoxicity of the bracket identification dyes commonly used in orthodontic fixed appliances. MATERIALS AND METHODS Six bracket brands representing the market in various aspects were selected. Ten sets of each bracket brand were acquired, and the identification dyes on them were scraped. They were tested for cytotoxicity at three different levels of concentration (2.5 mg/mL, 5 mg/mL, and 10 mg/mL), with the aid of a real-time cell analysis system. The results were compared within and between the groups. One-way analysis of variance and Tukey's post hoc test were used for statistical analysis. RESULTS None of the six investigated dyes displayed cytotoxicity at the 2.5 mg/mL concentration. Of the investigated brands, three at 5 mg/mL and four at 10 mg/mL displayed cytotoxicity. CONCLUSIONS Some of the identification dyes in this study did display cytotoxicity at the higher concentrations tested. Alternative methods for bracket identification should be considered.
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Brayman AA, MacConaghy BE, Wang YN, Chan KT, Monsky WL, Chernikov VP, Buravkov SV, Khokhlova VA, Matula TJ. Inactivation of Planktonic Escherichia coli by Focused 1-MHz Ultrasound Pulses with Shocks: Efficacy and Kinetics Upon Volume Scale-Up. ULTRASOUND IN MEDICINE & BIOLOGY 2018; 44:1996-2008. [PMID: 29941214 PMCID: PMC6135241 DOI: 10.1016/j.ultrasmedbio.2018.05.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 03/19/2018] [Accepted: 05/10/2018] [Indexed: 05/08/2023]
Abstract
This study addresses inactivation of E. coli in either 5- or 10-mL volumes, which were 50- to 100-fold greater than used in an earlier study (Brayman et al. 2017). Cells were treated with 1-MHz pulsed high-intensity focused ultrasound (10 cycles, 2-kHz repetition frequency, +65/-12.8 MPa focal pressures). The surviving fraction was assessed by coliform assay, and inactivation demonstrated curvilinear kinetics. The reduction of surviving fraction to 50% required 2.5 or 6 min in 5- or 10-mL samples, respectively. Exposure of 5 mL for 20 min reduced the surviving fraction to ∼1%; a similar exposure of 10-mL samples reduced the surviving fraction to ∼10%. Surviving cells from 5-min exposures appeared normal under light microscopy, with minimal debris; after 20 min, debris dominated. Transmission electron microscopy images of insonated samples showed some undamaged cells, a few damaged but largely intact cells and comminuted debris. Cellular damage associated with substantive but incomplete levels of inactivation can be variable, ranging from membrane holes tens of nanometers in diameter to nearly complete comminution.
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Affiliation(s)
- Andrew A Brayman
- Center for Industrial and Medical Ultrasound, Applied Physics Laboratory, University of Washington, Seattle, WA, USA.
| | - Brian E MacConaghy
- Center for Industrial and Medical Ultrasound, Applied Physics Laboratory, University of Washington, Seattle, WA, USA
| | - Yak-Nam Wang
- Center for Industrial and Medical Ultrasound, Applied Physics Laboratory, University of Washington, Seattle, WA, USA
| | | | - Wayne L Monsky
- Department of Radiology, University of Washington, Seattle, WA, USA
| | - Valery P Chernikov
- Research Institute of Human Morphology, Laboratory of Cell Pathology, Moscow, Russia
| | - Sergey V Buravkov
- Faculty of Fundamental Medicine, M.V. Lomonosov Moscow State University, Moscow, Russia
| | - Vera A Khokhlova
- Center for Industrial and Medical Ultrasound, Applied Physics Laboratory, University of Washington, Seattle, WA, USA; Department of Acoustics, Physics Faculty, M.V. Lomonosov Moscow State University, Moscow, Russia
| | - Thomas J Matula
- Center for Industrial and Medical Ultrasound, Applied Physics Laboratory, University of Washington, Seattle, WA, USA
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Halimi A, Benyahia H, Bahije L, Adli H, Azeroual MF, Zaoui F. Étude systématique de la libération du bisphénol A par les matériaux orthodontiques et ses effets biologiques. Int Orthod 2016; 14:399-417. [DOI: 10.1016/j.ortho.2016.10.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Halimi A, Benyahia H, Bahije L, Adli H, Azeroual MF, Zaoui F. A systematic study of the release of bisphenol A by orthodontic materials and its biological effects. Int Orthod 2016; 14:399-417. [PMID: 27856373 DOI: 10.1016/j.ortho.2016.10.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
INTRODUCTION Bisphenol A (BPA) is a synthetic chemical substance used as a starting ingredient in the manufacturing process of a number or orthodontic materials. It is a well-known endocrine disruptor with low estrogenic properties. The aim of this investigation is to present a systematic review regarding the issue of bisphenol A release by orthodontic materials and its impact in orthodontics. MATERIALS AND METHODS A systematic analysis was performed by electronic search (between 1936 and 2015) on several data bases. The search was limited by using several specific key-words in two languages, English and French. Two investigators selected the responses, which met the selection criteria. RESULTS AND DISCUSSION Of the 376 studies found, only 21 met our selection criteria: 11 of these dealt with the release of bisphenol by orthodontic materials and 10 in vitro studies described the effects of BPA leaching from orthodontic materials on human and murine cells. The rate of BPA release was well below the daily tolerable intake (DTI) (50mg/kg/day in 2006, then 50μg/kg/day in 2015) according to the European Food Safety Authority (EFSA). Theoretical exposure to BPA was 11,000 times lower than recommendations. However, other studies have shown the presence of BPA and of monomers released in large quantities at very low doses. The effects of observed BPA varied significantly (toxic and carcinogenic potential) while some studies found no effects at all. The relatively small number of studies dealing with the release of Bisphenol A by orthodontic materials, apart from orthodontic materials and their significant biological effects, has led to the absence of standard protocols and has hindered precise determination of released BPA. Moreover, the lack of coherence between the various methodological approaches and variations in the experimental protocols have resulted in a low level of proof regarding the impact of BPA by orthodontic materials. RECOMMENDATIONS Through this study, the authors encourage clinicians to observe the following recommendations designed to reduce the amount of BPA released by materials used in orthodontics: keep the tip of the light-curing lamp as close as possible to the composite and perform indirect rather than direct light-curing; Pumice-polish the composite after bonding so as to reduce the potential amount of BPA released; reduce exposure by brushing or rinsing with a mouthwash during the first hour after bonding; follow a standardized, reproducible and expert-validated research protocol aimed at better understanding of BPA release.
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Affiliation(s)
- Abdelali Halimi
- Équipe de recherche en biotechnologie et biomatériaux en milieu buccal, faculté de médecine dentaire, Mohammed V university in Rabat, centre hospitalier Ibn-Sina, Rabat-Instituts, BP 6212, Madinat Al Irfane, Rabat, Morocco.
| | - Hicham Benyahia
- Équipe de recherche en biotechnologie et biomatériaux en milieu buccal, faculté de médecine dentaire, Mohammed V university in Rabat, centre hospitalier Ibn-Sina, Rabat-Instituts, BP 6212, Madinat Al Irfane, Rabat, Morocco
| | - Loubna Bahije
- Équipe de recherche en biotechnologie et biomatériaux en milieu buccal, faculté de médecine dentaire, Mohammed V university in Rabat, centre hospitalier Ibn-Sina, Rabat-Instituts, BP 6212, Madinat Al Irfane, Rabat, Morocco
| | - Hanane Adli
- Équipe de recherche en biotechnologie et biomatériaux en milieu buccal, faculté de médecine dentaire, Mohammed V university in Rabat, centre hospitalier Ibn-Sina, Rabat-Instituts, BP 6212, Madinat Al Irfane, Rabat, Morocco
| | - Mohamed-Faouzi Azeroual
- Équipe de recherche en biotechnologie et biomatériaux en milieu buccal, faculté de médecine dentaire, Mohammed V university in Rabat, centre hospitalier Ibn-Sina, Rabat-Instituts, BP 6212, Madinat Al Irfane, Rabat, Morocco
| | - Fatima Zaoui
- Équipe de recherche en biotechnologie et biomatériaux en milieu buccal, faculté de médecine dentaire, Mohammed V university in Rabat, centre hospitalier Ibn-Sina, Rabat-Instituts, BP 6212, Madinat Al Irfane, Rabat, Morocco
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Kallapura G, Hernandez- X, Piekarski A, Lassiter K, Pumford N, Tellez G, Bottje W, Hargis B, Faulkner O. Development of an ex Vivo Ileal Explant Culture Method for Amplified Production and Differential Measurement of Nitrite. ACTA ACUST UNITED AC 2015. [DOI: 10.3923/ijps.2015.245.251] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Krishnan M, Tiwari B, Seema S, Kalra N, Biswas P, Rajeswari K, Suresh MB, Johnson R, Gokhale NM, Iyer SR, Londhe S, Arora V, Tripathi RP. Transparent magnesium aluminate spinel: a prospective biomaterial for esthetic orthodontic brackets. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:2591-2599. [PMID: 25027301 DOI: 10.1007/s10856-014-5268-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 06/24/2014] [Indexed: 06/03/2023]
Abstract
Adult orthodontics is recently gaining popularity due to its importance in esthetics, oral and general health. However, none of the currently available alumina or zirconia based ceramic orthodontic brackets meet the esthetic demands of adult patients. Inherent hexagonal lattice structure and associated birefringence limits the visible light transmission in polycrystalline alumina and make them appear white and non transparent. Hence focus of the present study was to assess the feasibility of using magnesium aluminate (MgAl2O4) spinel; a member of the transparent ceramic family for esthetic orthodontic brackets. Transparent spinel specimens were developed from commercially available white spinel powder through colloidal shaping followed by pressureless sintering and hot isostatic pressing at optimum conditions of temperature and pressure. Samples were characterized for chemical composition, phases, density, hardness, flexural strength, fracture toughness and optical transmission. Biocompatibility was evaluated with in-vitro cell line experiments for cytotoxicity, apoptosis and genotoxicity. Results showed that transparent spinel samples had requisite physico-chemical, mechanical, optical and excellent biocompatibility for fabricating orthodontic brackets. Transparent spinel developed through this method demonstrated its possibility as a prospective biomaterial for developing esthetic orthodontic brackets.
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Affiliation(s)
- Manu Krishnan
- Department of Dental Research & Implantology, Institute of Nuclear Medicine and Allied Sciences (INMAS), Defence Research and Development Organization (DRDO), Timarpur, Delhi, 110054, India,
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Cytotoxicity of esthetic, metallic, and nickel-free orthodontic brackets: cellular behavior and viability. Am J Orthod Dentofacial Orthop 2012; 142:70-4. [PMID: 22748992 DOI: 10.1016/j.ajodo.2012.02.025] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Revised: 02/01/2012] [Accepted: 02/01/2012] [Indexed: 11/21/2022]
Abstract
INTRODUCTION In this study, we evaluated the cellular viability of various esthetic, metallic, and nickel-free orthodontic brackets. METHODS The sample was divided into 11 groups (n = 8): cellular control, negative control, positive control, metallic, polycarbonate, 2 types of monocrystalline ceramic, 3 types of nickel free, and polycrystalline ceramic brackets. Cell culture (NIH/3T3-mice fibroblasts) was added to the plates of 96 wells containing the specimens and incubated in 5% carbon dioxide at 37°C for 24 hours. Cytotoxicity was analyzed qualitatively and quantitatively. Cell growth was analyzed with an inverted light microscope, photomicrographs were obtained, and the results were recorded as response rates based on modifications of the parameters of Stanford according to the size of diffusion halo of toxic substances. Cell viability was analyzed (MTT assay); a microplate reader recorded the cell viability through the mitochondrial activity in a length of 570 nm. The values were statistically analyzed. RESULTS All tested brackets had higher cytotoxicity values than did the negative control (P <0.05), with the exception Rematitan and Equilibrium (both, Dentaurum, Ispringen, Germany) (P >0.05), suggesting low toxicity effects. The values showed that only polycarbonate brackets were similar (P >0.05) to the positive control, suggesting high toxicity. CONCLUSIONS The brackets demonstrated different ranges of cytotoxicity; nickel-free brackets had better biocompatibility than the others. On the other hand, polycarbonate brackets were made of a highly cytotoxic material for the cells analyzed.
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Toledo CEP, Souza MA, Fraga MR, Ribeiro LC, Ferreira AP, Vitral RWF. Cellular viability and nitric oxide (NO) production by J774 macrophages in the presence of orthodontic archwires. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/jbise.2012.55032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Buljan ZI, Ribaric SP, Abram M, Ivankovic A, Spalj S. In vitro oxidative stress induced by conventional and self-ligating brackets. Angle Orthod 2011; 82:340-5. [PMID: 21913853 DOI: 10.2319/061811-395.1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE To determine the in vitro oxidative stress induced by conventional and self-ligating brackets made of different materials. MATERIALS AND METHODS The concentration of oxidative stress marker 8-hydroxy-2'-deoxyguanosine (8-OHdG) in DNA of murine fibroblast cells L929 after in vitro exposure to three types of conventional and four types of self-ligating brackets was assessed. To determine viability and changes in the number of cells before and after exposure, trypan blue dye was used. Analysis of variance (ANOVA) was used for statistical analysis. RESULTS No significant difference in cell viability was noted between metal, ceramic, and polymeric conventional brackets, and self-ligating brackets made of combinations of those materials, but viability was significantly higher compared with positive controls (P < .05). The conventional sapphire ceramic bracket (Inspire Ice) showed high viability, the largest increase in the number of cells, and the lowest oxidative stress. A higher concentration of markers of oxidative stress was observed in full metal conventional and self-ligating brackets (MiniSprint and Speed) and in conventional polyurethane brackets (Quantum) compared with negative controls (P < .05). CONCLUSION All types of orthodontic brackets, regardless of the constituent materials, are a source of oxidative stress in vitro, but the highest stress was induced in the full metal and polyurethane brackets. Conventional ceramic brackets show the highest degree of biocompatibility compared with polymeric and metal brackets and self-ligating brackets made from combinations of these materials.
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Affiliation(s)
- Zorana Ivankovic Buljan
- Department of Paediatric Dentistry and Orthodontics, School of Medicine, University of Rijeka, Rijeka, Croatia
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