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Pasha M, Muhammad N, Nayyer M, Bokhari JH, Ashraf H, Safi SZ, Kaleem M. Synthesis of an anti-cariogenic experimental dental composite containing novel drug-decorated copper particles. Mater Sci Eng C Mater Biol Appl 2020; 114:111040. [PMID: 32994017 DOI: 10.1016/j.msec.2020.111040] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 03/30/2020] [Accepted: 04/29/2020] [Indexed: 12/21/2022]
Abstract
Secondary caries is one of the most major cause for re-placement of dental composite restorations. Targeting the survival of cariogenic bacteria residing on the restoration surface may reduce this problem. The present study aims to evaluate the antibacterial potential as well as assess the physical and chemical properties of experimental dental composites containing novel drug-decorated copper particles (DDCP) as adjunct antibacterial filler particles. These were incorporated at concentrations of 0%, 0.5%, 0.10%, 0.20%, and 0.25% (w/w) into experimental composite consisting of methacrylate monomers and silanized silica fillers. RESULTS: Direct contact test revealed that the anti-cariogenic potential of experimental composites was more than the control groups. The cell viability assay showed no toxic effect on MC3T3-E1 cell lines in the MTT assay. The microhardness of experimental composites increased as the percentage of DDCP increased, however, the degree of cure was increased only up till the concentration of 0.20%. The release kinetics of the composites reveals that even after 28 days there was a steady and slow release of copper particles signifying the sustained anti-cariogenic effect. CONCLUSION: The experimental composites have good anti-cariogenic potential, which was sustained for one month without any deleterious effect on the physical and chemical properties of resin dental composites.
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Affiliation(s)
- Mehwish Pasha
- Department of Dental Materials, National University of Medical Sciences (NUMS), Rawalpindi, Pakistan
| | - Nawshad Muhammad
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM) COMSATS University Islamabad, Lahore Campus, Pakistan.
| | - Maleeha Nayyer
- Department of Dental Materials, National University of Medical Sciences (NUMS), Rawalpindi, Pakistan
| | - Jaffar Hussain Bokhari
- Department of Dental Materials, National University of Medical Sciences (NUMS), Rawalpindi, Pakistan
| | - Hina Ashraf
- Department of Dental Materials, National University of Medical Sciences (NUMS), Rawalpindi, Pakistan
| | - Sher Zaman Safi
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM) COMSATS University Islamabad, Lahore Campus, Pakistan
| | - Muhammad Kaleem
- Department of Dental Materials, National University of Medical Sciences (NUMS), Rawalpindi, Pakistan
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Jovanović AA, Balanč BD, Djordjević VB, Ota A, Skrt M, Šavikin KP, Bugarski BM, Nedović VA, Ulrih NP. Effect of gentisic acid on the structural-functional properties of liposomes incorporating β-sitosterol. Colloids Surf B Biointerfaces 2019; 183:110422. [PMID: 31437609 DOI: 10.1016/j.colsurfb.2019.110422] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 07/08/2019] [Accepted: 08/02/2019] [Indexed: 01/15/2023]
Abstract
Multifunctional liposomes incorporating β-sitosterol were developed for delivery of gentisic acid (GA). The interactions of both compounds with phospholipid bilayer were interpreted viaeffects of different β-sitosterol content (0, 20 and 50 mol %) and different gentisic acid to lipid ratio (nGA/nlip from 10-5 to 1) on membrane fluidity and thermotropic properties. Multilamellar vesicles of phosphatidylcholines (with size range between 1350 and 1900 nm) effectively encapsulated GA (54%) when nGA/nlip was higher than 0.01. Suppression of lipid peroxidation was directly related to concentration of GA. The resistance to diffusion of gentisic acid from liposomes increased for ˜50% in samples incorporating 50 mol % β-sitosterol compared to sterol-free liposomes. Finally, simulated in vitro gastrointestinal conditions showed that the release was mainly affected by low pH of simulated gastric fluid and the presence of cholates in simulated intestinal fluid, rather than by enzymes activity.
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Affiliation(s)
- Aleksandra A Jovanović
- Department of Chemical Engineering, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Bojana D Balanč
- Department of Chemical Engineering, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Verica B Djordjević
- Department of Chemical Engineering, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Ajda Ota
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia
| | - Mihaela Skrt
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia
| | - Katarina P Šavikin
- Institute for Medicinal Plant Research "Dr Josif Pančić", Tadeuša Košćuška 1, 11000 Belgrade, Serbia
| | - Branko M Bugarski
- Department of Chemical Engineering, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Viktor A Nedović
- Department of Food Technology and Biochemistry, Faculty of Agriculture, University of Belgrade, Nemanjina 6, 11080 Belgrade, Serbia
| | - Nataša Poklar Ulrih
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia.
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Perrone M, Lopalco A, Lopedota A, Cutrignelli A, Laquintana V, Franco M, Bernkop-Schnürch A, Denora N. S-preactivated thiolated glycol chitosan useful to combine mucoadhesion and drug delivery. Eur J Pharm Biopharm 2018; 132:103-111. [PMID: 30253185 DOI: 10.1016/j.ejpb.2018.09.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 09/21/2018] [Accepted: 09/21/2018] [Indexed: 11/15/2022]
Abstract
This work describes S-preactivated N-acetylcysteine (NAC)- and glutathione (GSH)-glycol chitosan (GC) polymer conjugates engineered as potential mucoadhesive platform. Preactivated thiomers (GC-NAC-MNA, GC-GSH-MNA) were synthesized by bond formation between GC-NAC or GC-GSH and 2-mercaptonicotinic acid (MNA) used as ligand. The presence of protected thiol moieties on this new class of thiolated GC made them not subject to oxidation. The structural modifications of the resulting derivatives were confirmed by proton Nuclear Magnetic Resonance (1H NMR) and Size Exclusion Chromatography (SEC). The conjugates displayed 91.2% and 90.1% of S-preactivation for GC-NAC-MNA and GC-GSH-MNA, respectively. The polymers were tested in ex-vivo and in vitro for their mucoadhesive properties and toxicity. The results showed that the preactivation of GC-NAC and GC-GSH increased their mucoadhesive abilities compared to their thiolated precursors by 1.4-, 4.4-fold in time of adhesion evaluated using rotating cylinder method, 1.6-, 1.5-fold in total work of adhesion (TWA) and 2.0-, 1.3-fold in maximum detachment force (MDA) determined using tensile studies, respectively. Moreover, water-uptake studies showed an improved in weight indicating water-uptake strongly dependent on derivations, before erosion occurred, whereas disintegration took place for the thiolated polymers within the first hour. The S-preactivated modification did not affect the cell viability of Caco2 cells exposed to the polymers. The release of the model drug sodium naproxen from tablets prepared with a lyophilized mixture of drug and polymer was studied via dissolution apparatus revealing that the preactivation on GC-GSH and GC-NAC involves a slowdown in the drug release rate. The results shown that the novel preactivated thiolated GC-derivatives can be considered promising excipients for the development of mucoadhesive drug delivery systems.
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Affiliation(s)
- Mara Perrone
- Department of Pharmacy - Drug Sciences, University of Bari "Aldo Moro", Bari, Italy; Istituto Tumori IRCCS "Giovanni Paolo II", Bari, Italy
| | - Antonio Lopalco
- Department of Pharmacy - Drug Sciences, University of Bari "Aldo Moro", Bari, Italy
| | - Angela Lopedota
- Department of Pharmacy - Drug Sciences, University of Bari "Aldo Moro", Bari, Italy
| | - Annalisa Cutrignelli
- Department of Pharmacy - Drug Sciences, University of Bari "Aldo Moro", Bari, Italy
| | - Valentino Laquintana
- Department of Pharmacy - Drug Sciences, University of Bari "Aldo Moro", Bari, Italy
| | - Massimo Franco
- Department of Pharmacy - Drug Sciences, University of Bari "Aldo Moro", Bari, Italy
| | - Andreas Bernkop-Schnürch
- Department of Pharmaceutical Technology, Institute of Pharmacy, Leopold-Franzens-University of Innsbruck, Innsbruck, Austria
| | - Nunzio Denora
- Department of Pharmacy - Drug Sciences, University of Bari "Aldo Moro", Bari, Italy.
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Tadini MC, de Freitas Pinheiro AM, Carrão DB, Aguillera Forte ALS, Nikolaou S, de Oliveira ARM, Berretta AA, Marquele-Oliveira F. Method validation and nanoparticle characterization assays for an innovative amphothericin B formulation to reach increased stability and safety in infectious diseases. J Pharm Biomed Anal 2017; 145:576-585. [PMID: 28777969 DOI: 10.1016/j.jpba.2017.06.034] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 06/15/2017] [Accepted: 06/17/2017] [Indexed: 11/16/2022]
Abstract
Drug Delivery Systems (DDS) of known drugs are prominent candidates towards new and more-effective treatments of various infectious diseases as they may increase drug bioavailability, control drug delivery and target the site of action. In this sense, the encapsulation of Amphotericin B (AmB) in Nanostructured Lipid Carriers (NLCs) designed with pH-sensible phospholipids to target infectious tissues was proposed and suitable analytical methods were validated, as well as, proper nanoparticle characterization were conducted. Characterization assays by Dinamic Light Scattering (DLS) and Atomic Force Microscopy demonstrated spherical particles with nanometric size 268.0±11.8nm and Zeta Potential -42.5±1.5mV suggestive of important stability. DSC/TGA and FT-IR assessments suggested mechanical encapsulation of AmB. The AmB aggregation study indicated that the encapsulation provided AmB at the lowest cytotoxic form, polyaggregate. Analytical methods were developed and validated according to regulatory agencies in order to fast and assertively determine AmB in nanoparticle suspension and, in Drug Encapsulation Efficiency (EE%), release and stability studies. The quantification method for AmB in NLC suspension presented linearity in 5.05-60.60μgmL-1 range (y=0.07659x+0.05344) and for AmB in receptor solution presented linearity in 0.15-10.00μgmL-1 range (y=54609x+263.1), both with r≥0.999. EE% was approximately 100% and according to the release results, at pH 7.4, a sustained controlled profile was observed for up 46h. In the meantime, a micellar AmB solution demonstrated an instability pattern after 7h of contact with the medium. Degradation and release studies under acid conditions (infectious condition) firstly depicted a prominent degradation of AmB (raw-material), with 20.3±3.5% at the first hour, reaching 43.3±7.0% after 7h of study. Next, particles faster disruption in acid environment was evidenced by measuring the NLC size variation by DLS and by the loss of the bluish sheen, characteristic of the nanostructured system macroscopically observed. Finally, safety studies depicted that NLC-AmB presented reduced toxicity in fibroblast cells, corroborating with AmB aggregated form study. Therefore, an innovative AmB formulation was fully characterized and it is a new proposal for in vivo investigations.
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Affiliation(s)
- Maraine Catarina Tadini
- Laboratory of Research, Development and Innovation, ELEVE Research and Development, Ribeirão Preto, SP, Brazil.
| | - Ana Maria de Freitas Pinheiro
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, 14040-901, Ribeirão Preto, SP, Brazil
| | - Daniel Blascke Carrão
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, 14040-901, Ribeirão Preto, SP, Brazil
| | | | - Sofia Nikolaou
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, 14040-901, Ribeirão Preto, SP, Brazil
| | - Anderson R M de Oliveira
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, 14040-901, Ribeirão Preto, SP, Brazil
| | - Andresa Aparecida Berretta
- Laboratory of Research, Development and Innovation, ELEVE Research and Development, Ribeirão Preto, SP, Brazil; Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, 14040-903, Ribeirão Preto, SP, Brazil; Laboratory of Research, Development and Innovation, Apis Flora Indl. Coml. Ltda., Ribeirão Preto, SP, Brazil
| | - Franciane Marquele-Oliveira
- Laboratory of Research, Development and Innovation, ELEVE Research and Development, Ribeirão Preto, SP, Brazil; Laboratory of Research, Development and Innovation, Apis Flora Indl. Coml. Ltda., Ribeirão Preto, SP, Brazil.
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Kasperek R, Polski A, Zimmer Ł, Poleszak E. Release kinetics of papaverine hydrochloride from tablets with different excipients. Sci Pharm 2014; 82:684-96. [PMID: 25853076 PMCID: PMC4318223 DOI: 10.3797/scipharm.1310-19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Accepted: 05/16/2014] [Indexed: 11/22/2022] Open
Abstract
The influence of excipients on the disintegration times of tablets and the release of papaverine hydrochloride (PAP) from tablets were studied. Ten different formulations of tablets with PAP were prepared by direct powder compression. Different binders, disintegrants, fillers, and lubricants were used as excipients. The release of PAP was carried out in the paddle apparatus using 0.1 N HCl as a dissolution medium. The results of the disintegration times of tablets showed that six formulations can be classified as fast dissolving tablets (FDT). FDT formulations contained Avicel PH 101, Avicel PH 102, mannitol, (3-lactose, PVP K 10, gelatinized starch (CPharmGel), Prosolv Easy Tab, Prosolv SMCC 90, magnesium stearate, and the addition of disintegrants such as AcDiSol and Kollidon CL. Drug release kinetics were estimated by the zero- and first-order, Higuchi release rate, and Korsmeyer-Peppas models. Two formulations of the tablets containing PVP (K10) (10%), CPharmGel (10% and 25%), and Prosolv Easy Tab (44% and 60%) without the addition of a disintegrant were well-fitted to the kinetics models such as the Higuchi and zero-order, which are suitable for controlled- or sustained-release.
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Affiliation(s)
- Regina Kasperek
- Department of Applied Pharmacy, Faculty of Pharmacy, Medical University of Lublin, 1 Chodzki Str. 20-093, Lublin, Poland
| | - Andrzej Polski
- Department of Applied Pharmacy, Faculty of Pharmacy, Medical University of Lublin, 1 Chodzki Str. 20-093, Lublin, Poland
| | - Łukasz Zimmer
- Department of Applied Pharmacy, Faculty of Pharmacy, Medical University of Lublin, 1 Chodzki Str. 20-093, Lublin, Poland
| | - Ewa Poleszak
- Department of Applied Pharmacy, Faculty of Pharmacy, Medical University of Lublin, 1 Chodzki Str. 20-093, Lublin, Poland
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