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Oliveira RWG, de Oliveira JM, da Paz FB, Muniz EC, de Moura EM, Costa JCS, do Nascimento MO, Carvalho ALM, Pinheiro IM, Mendes AN, Filgueiras LA, de Souza PR, de Moura CVR. Films composed of white angico gum and chitosan containing chlorhexidine as an antimicrobial agent. Int J Biol Macromol 2023; 235:123905. [PMID: 36870650 DOI: 10.1016/j.ijbiomac.2023.123905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 02/12/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023]
Abstract
Anadenanthera colubrina, popularly known as white angico, is a species extensively cultivated in Brazil, mainly in the cerrado region, including the state of Piauí. This study examines the development of films composed of white angico gum (WAG) and chitosan (CHI) and containing chlorhexidine (CHX), an antimicrobial agent. The solvent casting method was used to prepare films. Different combinations and concentrations of WAG and CHI were used to obtain films with good physicochemical characteristics. Properties such as the in vitro swelling ratio, the disintegration time, folding endurance, and the drug content were determined. The selected formulations were characterised by scanning electron microscopy, Fourier-transform infrared spectroscopy, differential scanning calorimetry, thermogravimetric analysis, and X-ray diffraction, and the CHX release time and antimicrobial activity were evaluated. CHX showed a homogenous distribution in all CHI/WAG film formulations. The optimised films showed good physicochemical properties with 80% CHX release over 26 h, which is considered promising for local treatment of severe lesions in the mouth. Cytotoxicity tests of the films did not show toxicity. The antimicrobial and antifungal effects were very effective against the tested microorganisms.
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Affiliation(s)
| | | | | | - Edvani Curti Muniz
- Department of Chemistry, Federal University of Piauí, 64049-550, Brazil.
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Bisphosphonates in Dentistry – State of the Art. SERBIAN JOURNAL OF EXPERIMENTAL AND CLINICAL RESEARCH 2021. [DOI: 10.2478/sjecr-2020-0061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Bisphosphonates remain the most used and most effective drugs for the treatment of systemic bone diseases followed by bone resorption. Although their side effects in a form of alveolar bone osteonecrosis have been reported, bisphosphonates have a potential of being used in the treatment of the most common oral diseases followed by alveolar bone resorption such as peri-implantitis, periapical lesions, and periodontitis. The aim of this article was to review the most recent research regarding the use of bisphosphonates in the field of dentistry. The results of studies indicate that bisphosphonate use in the treatment of peri-implantitis, periapical lesions, and periodontitis can reduce alveolar bone resorption and contribute to bone preservation. However, the most beneficial way of their application in the treatment of these oral diseases remain to be determined.
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Structural and Functional Dynamics of Staphylococcus aureus Biofilms and Biofilm Matrix Proteins on Different Clinical Materials. Microorganisms 2019; 7:microorganisms7120584. [PMID: 31756969 PMCID: PMC6955704 DOI: 10.3390/microorganisms7120584] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 11/14/2019] [Accepted: 11/18/2019] [Indexed: 12/27/2022] Open
Abstract
Medical device-associated staphylococcal infections are a common and challenging problem. However, detailed knowledge of staphylococcal biofilm dynamics on clinically relevant surfaces is still limited. In the present study, biofilm formation of the Staphylococcus aureus ATCC 25923 strain was studied on clinically relevant materials-borosilicate glass, plexiglass, hydroxyapatite, titanium and polystyrene-at 18, 42 and 66 h. Materials with the highest surface roughness and porosity (hydroxyapatite and plexiglass) did not promote biofilm formation as efficiently as some other selected materials. Matrix-associated poly-N-acetyl-β-(1-6)-glucosamine (PNAG) was considered important in young (18 h) biofilms, whereas proteins appeared to play a more important role at later stages of biofilm development. A total of 460 proteins were identified from biofilm matrices formed on the indicated materials and time points-from which, 66 proteins were proposed to form the core surfaceome. At 18 h, the appearance of several r-proteins and glycolytic adhesive moonlighters, possibly via an autolysin (AtlA)-mediated release, was demonstrated in all materials, whereas classical surface adhesins, resistance- and virulence-associated proteins displayed greater variation in their abundances depending on the used material. Hydroxyapatite-associated biofilms were more susceptible to antibiotics than biofilms formed on titanium, but no clear correlation between the tolerance and biofilm age was observed. Thus, other factors, possibly the adhesive moonlighters, could have contributed to the observed chemotolerant phenotype. In addition, a protein-dependent matrix network was observed to be already well-established at the 18 h time point. To the best of our knowledge, this is among the first studies shedding light into matrix-associated surfaceomes of S. aureus biofilms grown on different clinically relevant materials and at different time points.
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Tomane S, López-Maya E, Boujday S, Humblot V, Marrot J, Rabasso N, Castells-Gil J, Sicard C, Dolbecq A, Mialane P, Vallée A. One-pot synthesis of a new generation of hybrid bisphosphonate polyoxometalate gold nanoparticles as antibiofilm agents. NANOSCALE ADVANCES 2019; 1:3400-3405. [PMID: 36133536 PMCID: PMC9417735 DOI: 10.1039/c9na00401g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 09/18/2019] [Accepted: 07/29/2019] [Indexed: 06/16/2023]
Abstract
A reduced polyoxovanadate functionalized with bisphosphonate molecules was synthesized and used to prepare in one step hybrid organic-inorganic polyoxometalate decorated gold nanoparticles. These new composites were shown to strongly inhibit P. aeruginosa and S. epidermidis biofilm growth, with the three components constituting the nanoparticles (Au0 core, vanadium and alendronate) acting synergistically.
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Affiliation(s)
- S Tomane
- Institut Lavoisier de Versailles, UVSQ, UMR CNRS 8180, Université Paris-Saclay 45, avenue des Etats-Unis 78035 Versailles Cedex France
| | - E López-Maya
- Institut Lavoisier de Versailles, UVSQ, UMR CNRS 8180, Université Paris-Saclay 45, avenue des Etats-Unis 78035 Versailles Cedex France
| | - S Boujday
- Sorbonne Université, Laboratoire de Réactivité de Surface (LRS), UMR CNRS 7197 4 place Jussieu 75252 Paris France
| | - V Humblot
- Sorbonne Université, Laboratoire de Réactivité de Surface (LRS), UMR CNRS 7197 4 place Jussieu 75252 Paris France
| | - J Marrot
- Institut Lavoisier de Versailles, UVSQ, UMR CNRS 8180, Université Paris-Saclay 45, avenue des Etats-Unis 78035 Versailles Cedex France
| | - N Rabasso
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR CNRS 8182, Université Paris-Sud, Université Paris Saclay 15 rue Georges Clemenceau 91405 Orsay Cedex France
| | - J Castells-Gil
- Universidad de Valencia (ICMol) Catedrático José Beltrán-2 46980 Paterna Spain
| | - C Sicard
- Institut Lavoisier de Versailles, UVSQ, UMR CNRS 8180, Université Paris-Saclay 45, avenue des Etats-Unis 78035 Versailles Cedex France
| | - A Dolbecq
- Institut Lavoisier de Versailles, UVSQ, UMR CNRS 8180, Université Paris-Saclay 45, avenue des Etats-Unis 78035 Versailles Cedex France
| | - P Mialane
- Institut Lavoisier de Versailles, UVSQ, UMR CNRS 8180, Université Paris-Saclay 45, avenue des Etats-Unis 78035 Versailles Cedex France
| | - A Vallée
- Institut Lavoisier de Versailles, UVSQ, UMR CNRS 8180, Université Paris-Saclay 45, avenue des Etats-Unis 78035 Versailles Cedex France
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Kilicarslan M, Ilhan M, Inal O, Orhan K. Preparation and evaluation of clindamycin phosphate loaded chitosan/alginate polyelectrolyte complex film as mucoadhesive drug delivery system for periodontal therapy. Eur J Pharm Sci 2018; 123:441-451. [DOI: 10.1016/j.ejps.2018.08.007] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 08/01/2018] [Accepted: 08/02/2018] [Indexed: 12/11/2022]
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Hiltunen AK, Vuorela PM, Fallarero A. Bisphosphonates offer protection against prosthetic joint infections caused by Staphylococcus aureus and Staphylococcus epidermidis biofilms. J Drug Deliv Sci Technol 2017. [DOI: 10.1016/j.jddst.2017.06.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Physical key properties of antibiotic-free, PLGA/HPMC-based in-situ forming implants for local periodontitis treatment. Int J Pharm 2017; 521:282-293. [PMID: 28223246 DOI: 10.1016/j.ijpharm.2017.02.039] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 02/14/2017] [Accepted: 02/15/2017] [Indexed: 01/03/2023]
Abstract
In-situ forming implants (ISFI) offer an interesting potential for the treatment of periodontitis, allowing for time-controlled drug release directly at the site of action (which is difficult to reach). For this purpose, ISFI loaded with antibiotics have been reported in the literature. But the use of antibiotic drugs at low doses over prolonged periods of time can lead to the development of bacterial resistances. This risk should be avoided. The aim of this study was to develop a novel type of in-situ forming implants, loaded with the antiseptic drug chlorhexidine. Special emphasis was placed on the physical properties of the systems, assuring a reliable residence time in the periodontal pockets of patients suffering from periodontitis. In particular, the risk of premature, accidental loss of the formulations due to mechanical stress (e.g. during tooth brushing and chewing) was to be reduced. Two commercially available drug products for local periodontitis treatment were studied for reasons of comparison: Chlo-site and Parocline. The syringeability and swelling behavior of the formulations were investigated, and the hardness, springiness, resilience and "stickiness" of the systems determined using extracted human teeth. Interestingly, the novel in-situ forming implants, based on PLGA/HPMC and being free of antibiotics, exhibit highly promising physical key properties: They are intensively sticking to teeth' surfaces and provide adequate mechanical strength to assure reliable and prolonged residence times in periodontal pockets. In contrast, the commercial drug products showed limited adhesion and either rapidly shrank (Chlo-site), or substantially swelled and were mechanically very weak (Parocline).
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