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Preparations of Silver/Montmorillonite Biocomposite Multilayers and Their Antifungal Activity. COATINGS 2019. [DOI: 10.3390/coatings9120817] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In this study, the results about the influence of the surface morphology of layers based on montmorillonite (MMT) and silver (Ag) on antimicrobial properties are reported. The coating depositions were performed in the plasma of a radio frequency (RF) magnetron sputtering discharge. The studied layers were single montmorillonite layers (MMT) and silver/montmorillonite multilayers (MMT-Ag) obtained by magnetron sputtering technique with a different surface thickness. The resultant MMT-Ag biocomposite multilayers exhibited a uniform distribution of constituent elements and enhanced antimicrobial properties against fungal biofilm development. Glow-discharge optical emission spectroscopy (GDOES) analysis revealed the formation of MMT-Ag biocomposite multilayers following the deposit of a silver layer for an MMT layer that was initially deposited on a Si substrate. The surface morphology and thickness evaluation of deposited biocomposite layers were performed by scanning electron microscopy (SEM). A qualitative analysis of the chemical composition of thin layers was performed and the elements O, Ag, Mg, Fe, Al, and Si were identified in the MMT-Ag biocomposite multilayers. The in vitro antifungal assay proved that the inhibitory effect against the growth of Candida albicans ATCC 101231 CFU was more emphasized in the case of MMT-Ag biocomposite multilayers that in the case of the MMT layer. Cytotoxicity studies performed on HeLa cells showed that the tested layers did not show significant toxicity at the time intervals during which the assay was performed. On the other hand, it was observed that the MMT layers exhibited slightly higher biocompatible properties than the MMT-Ag composite layers.
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Mohammadi M, Haghirosadat BF, larypoor M, Ehsani R, Yazdian F, Rashedi H, Jahanizadeh S, Rahmani A. Synthesis, Characterization and Evaluation of Liponiosome Containing Ginger Extract as a New Strategy for Potent Antifungal Formulation. J CLUST SCI 2019. [DOI: 10.1007/s10876-019-01702-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Cusicanqui Méndez DA, Gutierrez E, Campos Chaves Lamarque G, Lopes Rizzato V, Afonso Rabelo Buzalaf M, Andrade Moreira Machado MA, Cruvinel T. The effectiveness of curcumin-mediated antimicrobial photodynamic therapy depends on pre-irradiation and biofilm growth times. Photodiagnosis Photodyn Ther 2019; 27:474-480. [PMID: 31310825 DOI: 10.1016/j.pdpdt.2019.07.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 06/13/2019] [Accepted: 07/12/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND The aim of this study was to determine the influence of distinct pre-irradiation times (PIT) of curcumin on the effectiveness of antimicrobial photodynamic therapy (aPDT) against intact dentin caries biofilms grown for 3 or 5 days. METHODS The microcosm biofilms grew on non-fluorescent glass blocks immersed in McBain medium with 1% sucrose, using microaerophilic conditions at 37 °C for 3 or 5 days. The biofilms were treated by the association of 600 μmol.L-1 curcumin using different pre-irradiation times (1, 2 or 5 min) combined with 0 or 75 J.cm-2 blue LED. Then, the vitality of biofilms was determined by confocal scanning laser microscopy (CSLM), after being stained with the mixture of ethidium bromide and fluorescein diacetate. Statistical analysis was performed by two-way ANOVA and post-hoc Tukey tests, after arcsine transformation (P < 0,05). RESULTS In comparison to control, curcumin alone (PIT = 5 min) and all combinations of curcumin and LED reduced significantly the vitality of 3-day biofilms. Distinctly, only curcumin plus LED using PITs of 2 or 5 min were effective in reducing the vitality of 5-day biofilms. CONCLUSION Curcumin-mediated aPDT significantly decreased the vitality of intact dentin caries microcosms grown during 3 or 5 days, although successful treatments of 5-day biofilms required longer PITs in comparison to their counterparts.
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Affiliation(s)
- Daniela Alejandra Cusicanqui Méndez
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Alameda Dr. Octávio Pinheiro Brisolla, 9-75, Vila Universitária, Bauru, SP 17012-901, Brazil
| | - Eliezer Gutierrez
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Alameda Dr. Octávio Pinheiro Brisolla, 9-75, Vila Universitária, Bauru, SP 17012-901, Brazil
| | - Giuliana Campos Chaves Lamarque
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Alameda Dr. Octávio Pinheiro Brisolla, 9-75, Vila Universitária, Bauru, SP 17012-901, Brazil
| | - Veridiana Lopes Rizzato
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Alameda Dr. Octávio Pinheiro Brisolla, 9-75, Vila Universitária, Bauru, SP 17012-901, Brazil
| | | | - Maria Aparecida Andrade Moreira Machado
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Alameda Dr. Octávio Pinheiro Brisolla, 9-75, Vila Universitária, Bauru, SP 17012-901, Brazil
| | - Thiago Cruvinel
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Alameda Dr. Octávio Pinheiro Brisolla, 9-75, Vila Universitária, Bauru, SP 17012-901, Brazil.
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Effect of Experimental Parameters on the Formation of Hydrogels by Polyelectrolyte Complexation of Carboxymethylcellulose, Carboxymethyl Starch, and Alginic Acid with Chitosan. INTERNATIONAL JOURNAL OF CHEMICAL ENGINEERING 2019. [DOI: 10.1155/2019/3085691] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Differences in morphology, pH, and electric charge of chitosan (CS) based hydrogels prepared by complexation with carboxymethylcellulose (CMC), carboxymethylated starch (CMS), and alginic acid (AA) at different polymers ratios and changing the order of addition were studied. CMC/CS and AA/CS hydrogels were amorphous and porous three-dimensional networks, with smaller pores at higher anionic polymer/CS ratios. Gelation time increased the agglomeration in the case of CMC/CS and CMS/CS gels. CMC/CS gels showed negative zeta potential values around −372 mV to −51 mV and CMS/CS gels in the range of −526 mV and −158 mV.
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Cohen E, Merzendorfer H. Chitin/Chitosan: Versatile Ecological, Industrial, and Biomedical Applications. EXTRACELLULAR SUGAR-BASED BIOPOLYMERS MATRICES 2019; 12. [PMCID: PMC7115017 DOI: 10.1007/978-3-030-12919-4_14] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Chitin is a linear polysaccharide of N-acetylglucosamine, which is highly abundant in nature and mainly produced by marine crustaceans. Chitosan is obtained by hydrolytic deacetylation. Both polysaccharides are renewable resources, simply and cost-effectively extracted from waste material of fish industry, mainly crab and shrimp shells. Research over the past five decades has revealed that chitosan, in particular, possesses unique and useful characteristics such as chemical versatility, polyelectrolyte properties, gel- and film-forming ability, high adsorption capacity, antimicrobial and antioxidative properties, low toxicity, and biocompatibility and biodegradability features. A plethora of chemical chitosan derivatives have been synthesized yielding improved materials with suggested or effective applications in water treatment, biosensor engineering, agriculture, food processing and storage, textile additives, cosmetics fabrication, and in veterinary and human medicine. The number of studies in this research field has exploded particularly during the last two decades. Here, we review recent advances in utilizing chitosan and chitosan derivatives in different technical, agricultural, and biomedical fields.
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Affiliation(s)
- Ephraim Cohen
- Department of Entomology, The Robert H. Smith Faculty of Agriculture Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Hans Merzendorfer
- School of Science and Technology, Institute of Biology – Molecular Biology, University of Siegen, Siegen, Germany
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Ranjbar M, Pardakhty A, Tahmipour B, Mohamadzadeh I. Novel CaO/polylactic acid nanoscaffold as dental resin nanocomposites and the investigation of physicochemical properties. LUMINESCENCE 2019; 34:360-367. [DOI: 10.1002/bio.3617] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Revised: 01/15/2019] [Accepted: 01/28/2019] [Indexed: 12/21/2022]
Affiliation(s)
- Mehdi Ranjbar
- Pharmaceutics Research Center, Institute of NeuropharmacologyKerman University of Medical Sciences Kerman Iran
| | - Abbas Pardakhty
- Pharmaceutics Research Center, Institute of NeuropharmacologyKerman University of Medical Sciences Kerman Iran
| | - Batool Tahmipour
- Young Researchers and Elite Club, Sirjan BranchIslamic Azad University Sirjan Iran
| | - Iman Mohamadzadeh
- Oral and Dental Disease Research CenterKerman University of Medical Sciences Kerman Iran
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Enhancing Curcumin Oral Bioavailability Through Nanoformulations. Eur J Drug Metab Pharmacokinet 2019; 44:459-480. [DOI: 10.1007/s13318-019-00545-z] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Margaritova Zaharieva M, Dimitrov Kroumov A, Dimitrova L, Tsvetkova I, Trochopoulos A, Mihaylov Konstantinov S, Reinhold Berger M, Momchilova M, Yoncheva K, Miladinov Najdenski H. Micellar curcumin improves the antibacterial activity of the alkylphosphocholines erufosine and miltefosine against pathogenic Staphyloccocus aureus strains. BIOTECHNOL BIOTEC EQ 2019. [DOI: 10.1080/13102818.2018.1533792] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Affiliation(s)
- Maya Margaritova Zaharieva
- Department of Infectious Microbiology, The Stephan Angeloff Institute of Microbiology Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Alexander Dimitrov Kroumov
- Department of Applied Microbiology, The Stephan Angeloff Institute of Microbiology Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Lyudmila Dimitrova
- Department of Infectious Microbiology, The Stephan Angeloff Institute of Microbiology Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Iva Tsvetkova
- Department of Infectious Microbiology, The Stephan Angeloff Institute of Microbiology Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Antonios Trochopoulos
- Department of Pharmacology Pharmacotherapy and Toxicology Faculty of Pharmacy, Medical University of Sofia, Sofia, Bulgaria
| | - Spiro Mihaylov Konstantinov
- Department of Pharmacology Pharmacotherapy and Toxicology Faculty of Pharmacy, Medical University of Sofia, Sofia, Bulgaria
| | | | - Milena Momchilova
- Department of Pharmaceutical Technology and Biopharmaceutics Faculty of Pharmacy, Medical University of Sofia, Sofia, Bulgaria
| | - Krassimira Yoncheva
- Department of Pharmaceutical Technology and Biopharmaceutics Faculty of Pharmacy, Medical University of Sofia, Sofia, Bulgaria
| | - Hristo Miladinov Najdenski
- Department of Infectious Microbiology, The Stephan Angeloff Institute of Microbiology Bulgarian Academy of Sciences, Sofia, Bulgaria
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Rezapour N, Rasekh B, Mofradnia SR, Yazdian F, Rashedi H, Tavakoli Z. Molecular dynamics studies of polysaccharide carrier based on starch in dental cavities. Int J Biol Macromol 2018; 121:616-624. [PMID: 30308285 DOI: 10.1016/j.ijbiomac.2018.10.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 08/22/2018] [Accepted: 10/07/2018] [Indexed: 12/28/2022]
Abstract
Health is an important element that influences the level of development in a community. Studies show that tooth decay has been prevalent recently. Starch incorporating curcumin can serve as an alternative approach in preventing the activity of Streptococcus mutans attributed to biofilm and plaque formation on teeth. In this research, the performance of starch nanoparticle as a carrier for curcumin, a natural anti-inflammatory and a strong antioxidant agent, in decreasing dental caries was simulated. In the first stage, the conformational rearrangements of molecules and their interactions with other molecular species in a range of environments were examined via computational techniques and molecular dynamics (MD) simulation. The charts of energy, temperature, density, cell size and the radial distribution function (RDF) derived from the simulation, confirmed that during 5 initial steps there was a stable binding between the curcumin and starch in the presence of bacteria. The energy released in the starch formed nanosphere is very high, and this indicates a full reaction in the system. However, the density-decreasing trend of nanosystem suggests that it can effectively inhibit the activity of microorganism.
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Affiliation(s)
- Nazli Rezapour
- Department of Chemical Engineering, Faculty of Engineering, Islamic Azad University North Tehran Branch, Tehran, Iran
| | - Behnam Rasekh
- Microbiology and Biotechnology Research Group, Research Institute of Petroleum Industry, Tehran, Iran
| | - Soheil Rezazadeh Mofradnia
- Department of Chemical Engineering, Faculty of Engineering, Islamic Azad University North Tehran Branch, Tehran, Iran
| | - Fatemeh Yazdian
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran.
| | - Hamid Rashedi
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran.
| | - Zahra Tavakoli
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
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Khezri A, Karimi A, Yazdian F, Jokar M, Mofradnia SR, Rashedi H, Tavakoli Z. Molecular dynamic of curcumin/chitosan interaction using a computational molecular approach: Emphasis on biofilm reduction. Int J Biol Macromol 2018; 114:972-978. [DOI: 10.1016/j.ijbiomac.2018.03.100] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Revised: 03/09/2018] [Accepted: 03/19/2018] [Indexed: 10/17/2022]
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