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Kulawik P, Jamróz E, Kruk T, Szymkowiak A, Tkaczewska J, Krzyściak P, Skóra M, Guzik P, Janik M, Vlčko T, Milosavljević V. Active edible multi-layer chitosan/furcellaran micro/nanoemulsions with plant essential oils and antimicrobial peptides: Biological properties and consumer acceptance. Food Control 2023. [DOI: 10.1016/j.foodcont.2023.109767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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2
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Saeedi T, Prokopovich P. Poly beta amino ester coated emulsions of NSAIDs for cartilage treatment. J Mater Chem B 2021; 9:5837-5847. [PMID: 34254088 PMCID: PMC8317778 DOI: 10.1039/d1tb01024g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 06/24/2021] [Indexed: 12/26/2022]
Abstract
Delivering drugs directly into cartilage is still the major challenge in the management and treatment of osteoarthritis (OA) resulting from the aneural, avascular and alymphatic nature of an articular cartilage structure. Progress has been made in the design of drug delivery systems that enhance corticosteroid uptake and retention in cartilage; however also non-steroidal anti-inflammatory drugs (NSAIDs) are prescribed for patients affected by OA and a drug delivery system specifically designed for this drug category is currently unavailable. We developed an approach based on the preparation of NSAID oil-in-water emulsions coated with poly-beta-amino-esters (PBAEs) to exploit the cartilage penetrating ability of such polymers and the high solubility of drugs in oil. These emulsions containing different NSAIDs (indomethacin, ketorolac, diclofenac and naproxen) exhibited enhanced and prolonged drug localisation not only in healthy cartilage tissues but also in early-stage OA samples. The critical role of the PBAE layer on oil droplets was established along with the retained biological activity of the drug as glycosaminoglycan (GAG) and collagen degradation induced by interleukin-1 (IL-1) was prevented by the novel technology. Oil-in-water coated emulsions are very flexible and cost-effective drug delivery systems and such an approach presented here could provide a substantial improvement in the therapeutic treatments of OA and thus patients' outcomes.
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Affiliation(s)
- Tahani Saeedi
- Cardiff School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Redwood Building, King Edward VII Avenue, Cardiff, CF10 3NB, UK.
| | - Polina Prokopovich
- Cardiff School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Redwood Building, King Edward VII Avenue, Cardiff, CF10 3NB, UK.
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Hyaluronic Acid-Based Nanocapsules as Efficient Delivery Systems of Garlic Oil Active Components with Anticancer Activity. NANOMATERIALS 2021; 11:nano11051354. [PMID: 34065497 PMCID: PMC8160828 DOI: 10.3390/nano11051354] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/13/2021] [Accepted: 05/16/2021] [Indexed: 12/23/2022]
Abstract
Diallyl disulfide (DADS) and diallyl trisulfide (DATS) are garlic oil compounds exhibiting beneficial healthy properties including anticancer action. However, these compounds are sparingly water-soluble with a limited stability that may imply damage to blood vessels or cells after administration. Thus, their encapsulation in the oil-core nanocapsules based on a derivative of hyaluronic acid was investigated here as a way of protecting against oxidation and undesired interactions with blood and digestive track components. The nuclear magnetic resonance (1H NMR) technique was used to follow the oxidation processes. It was proved that the shell of the capsule acts as a barrier limiting the sulfur oxidation, enhancing the stability of C=C bonds in DADS and DATS. Moreover, it was shown that the encapsulation inhibited the lysis of the red blood cell membrane (mainly for DADS) and interactions with serum or digestive track components. Importantly, the biological functions and anticancer activity of DADS and DATS were preserved after encapsulation. Additionally, the nanocapsule formulations affected the migration of neoplastic cells—a desirable preliminary observation concerning the inhibition of migration. The proposed route of administration of these garlic extract components would enable reaching their higher concentrations in blood, longer circulation in a bloodstream, and thus, imply a better therapeutic effect.
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Szafraniec-Szczęsny J, Janik-Hazuka M, Odrobińska J, Zapotoczny S. Polymer Capsules with Hydrophobic Liquid Cores as Functional Nanocarriers. Polymers (Basel) 2020; 12:E1999. [PMID: 32887444 PMCID: PMC7565928 DOI: 10.3390/polym12091999] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 08/28/2020] [Accepted: 09/01/2020] [Indexed: 12/12/2022] Open
Abstract
Recent developments in the fabrication of core-shell polymer nanocapsules, as well as their current and future applications, are reported here. Special attention is paid to the newly introduced surfactant-free fabrication method of aqueous dispersions of nanocapsules with hydrophobic liquid cores stabilized by amphiphilic copolymers. Various approaches to the efficient stabilization of such vehicles, tailoring their cores and shells for the fabrication of multifunctional, navigable nanocarriers and/or nanoreactors useful in various fields, are discussed. The emphasis is placed on biomedical applications of polymer nanocapsules, including the delivery of poorly soluble active compounds and contrast agents, as well as their use as theranostic platforms. Other methods of fabrication of polymer-based nanocapsules are briefly presented and compared in the context of their biomedical applications.
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Affiliation(s)
- Joanna Szafraniec-Szczęsny
- Department of Pharmaceutical Technology and Biopharmaceutics, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Krakow, Poland
| | - Małgorzata Janik-Hazuka
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland; (M.J.-H.); (J.O.)
| | - Joanna Odrobińska
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland; (M.J.-H.); (J.O.)
| | - Szczepan Zapotoczny
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland; (M.J.-H.); (J.O.)
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Heidari SM, Anctil A. Identifying alternative solvents for C 60 manufacturing using singular and combined toxicity assessments. JOURNAL OF HAZARDOUS MATERIALS 2020; 393:122337. [PMID: 32172058 DOI: 10.1016/j.jhazmat.2020.122337] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 02/02/2020] [Accepted: 02/15/2020] [Indexed: 06/10/2023]
Abstract
Linseed oil, olive oil, and sunflower oil were selected based on green chemistry principles and C60 solubility as alternative solvents to replace 1,2,4-trimethylbenzene (TMB) for C60 manufacturing. Singular acute toxicity experiments of C60 and the four solvents was performed using Daphnia magna to identify the solvent with the lowest toxicity and estimate the toxicity of C60. The EC50 for C60 was estimated to be higher than 176 ppm. The toxicity of the solvents increased from sunflower oil to olive oil, linseed oil, and TMB. Combined toxicity tests were conducted to investigate the interaction between C60 and the solvent since essential oils can be nanocarriers and facilitate the transport of C60 into the cell membranes, which would increase its toxicity. Various concentrations of C60 (0, 11, 22, 44, 88, and 176 mg/L) were mixed with solvents at their EC50 concentrations. The toxicity of linseed oil increased with increasing C60 concentrations. For olive and sunflower oil, the toxicity was lowered with low concentrations of C60. Olive oil was determined to be a suitable solvent for C60 manufacturing based on singular and combined toxicity assessments. This study showed the importance of considering combined toxicity for solvent selection.
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Affiliation(s)
- Seyed M Heidari
- Department of Civil and Environmental Engineering, Michigan State University, East Lansing, MI, 48824, United States.
| | - Annick Anctil
- Department of Civil and Environmental Engineering, Michigan State University, East Lansing, MI, 48824, United States.
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6
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Odrobińska J, Gumieniczek-Chłopek E, Szuwarzyński M, Radziszewska A, Fiejdasz S, Strączek T, Kapusta C, Zapotoczny S. Magnetically Navigated Core-Shell Polymer Capsules as Nanoreactors Loadable at the Oil/Water Interface. ACS APPLIED MATERIALS & INTERFACES 2019; 11:10905-10913. [PMID: 30810298 DOI: 10.1021/acsami.8b22690] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Polymer core-shell nanocapsules with magnetic nanoparticles embedded in their oil cores were fabricated and applied as nano(photo)reactors. Superparamagnetic iron oxide nanoparticles (SPIONs) coated with oleic acid were first synthesized and characterized structurally, and their magnetic properties were determined. The capsules with chitosan-based shells were then formed in a one-step process by sonication-assisted mixing of (1) an aqueous solution of the hydrophobically derived chitosan and (2) oleic acid containing the dispersed SPIONs. In this way, magnetic capsules with a diameter of approximately 500-600 nm containing encapsulated SPIONs with an average diameter of approximately 20-30 nm were formed as revealed by dynamic light scattering and scanning transmission electron microscopy measurements. The composition and magnetic properties of the formed capsules were also followed using dynamic light scattering, electron microscopies, and magnetic force microscopy. The water-dispersible capsules, thanks to their magnetic properties, were then navigated in a static magnetic field gradient and transferred between the water and oil phases, as evidenced by fluorescence microscopy. In this way, the capsules could be loaded in a controlled way with a hydrophobic reactant, perylene, which was later photooxidized upon transferring the capsules to the aqueous phase. The capsules were shown to serve as robust reloadable nanoreactors/nanocontainers that via magnetic navigation can be transferred between immiscible phases without disruption. These features make them promising reusable systems not only for loading and carrying lipophilic actives, conducting useful reactions in the confined environment of the capsules, but also for magnetically separating and guiding the encapsulated active molecules to the site of action.
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Affiliation(s)
- Joanna Odrobińska
- Faculty of Chemistry , Jagiellonian University , Gronostajowa 2 , 30-387 Krakow , Poland
| | | | | | | | | | | | | | - Szczepan Zapotoczny
- Faculty of Chemistry , Jagiellonian University , Gronostajowa 2 , 30-387 Krakow , Poland
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7
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Polyelectrolyte nanocapsules containing iron oxide nanoparticles as MRI detectable drug delivery system. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.04.069] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Podgórna K, Jankowska K, Szczepanowicz K. Polysaccharide gel nanoparticles modified by the Layer-by-Layer technique for biomedical applications. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2016.07.067] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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9
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Gaynanova GA, Vasilieva EA, Bekmukhametova AM, Nizameev IR, Kadirov MK, Zakharova LY, Konovalov AI. Encapsulation of quantum dots in supramolecular systems based on amphiphilic compounds and polyelectrolytes. Russ Chem Bull 2016. [DOI: 10.1007/s11172-016-1277-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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10
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Cristofolini L, Szczepanowicz K, Orsi D, Rimoldi T, Albertini F, Warszynski P. Hybrid Polyelectrolyte/Fe3O4 Nanocapsules for Hyperthermia Applications. ACS APPLIED MATERIALS & INTERFACES 2016; 8:25043-50. [PMID: 27588711 DOI: 10.1021/acsami.6b05917] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
We validated here the applicability to hyperthermia treatment of magnetic nanocapsules prepared by the sequential layer-by-layer adsorption of polyelectrolytes and magnetic, Fe3O4 nanoparticles. For the shell preparation around a nanodroplet liquid core, biocompatible polyelectrolytes were used: poly l-lysine as the polycation and poly glutamic acid as the polyanion. The hyperthermia effect was demonstrated by applying the radio frequency (rf) magnetic field with maximum fields H up to 0.025 T and frequencies up to 430 kHz; we found sizable heating effects, with a heating rate up to 0.46 °C/min. We also found effects of irradiation on capsules' morphology that indicated their disruption, thus suggesting their potential use as nanocarriers of drugs that can be locally released on demand. Therefore, these magnetically responsive nanocapsules could be a promising platform for multifunctional biomedical applications such as the controlled release of pharmaceuticals in combination with hyperthermia treatment.
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Affiliation(s)
- Luigi Cristofolini
- Dipartimento di Fisica e Scienze della, Terra- Parma University , 43124 Parma, Italy
| | | | - Davide Orsi
- Dipartimento di Fisica e Scienze della, Terra- Parma University , 43124 Parma, Italy
| | - Tiziano Rimoldi
- Dipartimento di Fisica e Scienze della, Terra- Parma University , 43124 Parma, Italy
| | | | - Piotr Warszynski
- J. Haber Institute of Catalysis and Surface Chemistry PAS , 30-239 Krakow, Poland
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Szczepanowicz K, Jantas D, Piotrowski M, Staroń J, Leśkiewicz M, Regulska M, Lasoń W, Warszyński P. Encapsulation of curcumin in polyelectrolyte nanocapsules and their neuroprotective activity. NANOTECHNOLOGY 2016; 27:355101. [PMID: 27454207 DOI: 10.1088/0957-4484/27/35/355101] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Poor water solubility and low bioavailability of lipophilic drugs can be potentially improved with the use of delivery systems. In this study, encapsulation of nanoemulsion droplets was utilized to prepare curcumin nanocarriers. Nanosize droplets containing the drug were encapsulated in polyelectrolyte shells formed by the layer-by-layer (LbL) adsorption of biocompatible polyelectrolytes: poly-L-lysine (PLL) and poly-L-glutamic acid (PGA). The size of synthesized nanocapsules was around 100 nm. Their biocompatibility and neuroprotective effects were evaluated on the SH-SY5Y human neuroblastoma cell line using cell viability/toxicity assays (MTT reduction, LDH release). Statistically significant toxic effect was clearly observed for PLL coated nanocapsules (reduction in cell viability about 20%-60%), while nanocapsules with PLL/PGA coating did not evoke any detrimental effects on SH-SY5Y cells. Curcumin encapsulated in PLL/PGA showed similar neuroprotective activity against hydrogen peroxide (H2O2)-induced cell damage, as did 5 μM curcumin pre-dissolved in DMSO (about 16% of protection). Determination of concentration of curcumin in cell lysate confirmed that curcumin in nanocapsules has cell protective effect in lower concentrations (at least 20 times) than when given alone. Intracellular mechanisms of encapsulated curcumin-mediated protection engaged the prevention of the H2O2-induced decrease in mitochondrial membrane potential (MMP) but did not attenuate Reactive Oxygen Species (ROS) formation. The obtained results indicate the utility of PLL/PGA shell nanocapsules as a promising, alternative way of curcumin delivery for neuroprotective purposes with improved efficiency and reduced toxicity.
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Affiliation(s)
- Krzysztof Szczepanowicz
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Kraków, Poland
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12
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Podgórna K, Szczepanowicz K. Synthesis of polyelectrolyte nanocapsules with iron oxide (Fe 3 O 4 ) nanoparticles for magnetic targeting. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.02.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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13
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Szczepanowicz K, Bzowska M, Kruk T, Karabasz A, Bereta J, Warszynski P. Pegylated polyelectrolyte nanoparticles containing paclitaxel as a promising candidate for drug carriers for passive targeting. Colloids Surf B Biointerfaces 2016; 143:463-471. [DOI: 10.1016/j.colsurfb.2016.03.064] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 03/21/2016] [Accepted: 03/22/2016] [Indexed: 10/22/2022]
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14
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Oh E, Liu R, Nel A, Gemill KB, Bilal M, Cohen Y, Medintz IL. Meta-analysis of cellular toxicity for cadmium-containing quantum dots. NATURE NANOTECHNOLOGY 2016; 11:479-86. [PMID: 26925827 DOI: 10.1038/nnano.2015.338] [Citation(s) in RCA: 280] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 12/16/2015] [Indexed: 04/14/2023]
Abstract
Understanding the relationships between the physicochemical properties of engineered nanomaterials and their toxicity is critical for environmental and health risk analysis. However, this task is confounded by material diversity, heterogeneity of published data and limited sampling within individual studies. Here, we present an approach for analysing and extracting pertinent knowledge from published studies focusing on the cellular toxicity of cadmium-containing semiconductor quantum dots. From 307 publications, we obtain 1,741 cell viability-related data samples, each with 24 qualitative and quantitative attributes describing the material properties and experimental conditions. Using random forest regression models to analyse the data, we show that toxicity is closely correlated with quantum dot surface properties (including shell, ligand and surface modifications), diameter, assay type and exposure time. Our approach of integrating quantitative and categorical data provides a roadmap for interrogating the wide-ranging toxicity data in the literature and suggests that meta-analysis can help develop methods for predicting the toxicity of engineered nanomaterials.
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Affiliation(s)
- Eunkeu Oh
- Optical Sciences Division, Code 5611, US Naval Research Laboratory, Washington, Washington DC 20375, USA
- Sotera Defense Solutions, Columbia, Maryland 21046, USA
| | - Rong Liu
- Institute of the Environment and Sustainability, University of California, Los Angeles, California 90095-1496, USA
- Center for Environmental Implications of Nanotechnology, University of California, Los Angeles, California 90095-7227, USA
| | - Andre Nel
- Center for Environmental Implications of Nanotechnology, University of California, Los Angeles, California 90095-7227, USA
- Department of Medicine, Division of NanoMedicine, University of California, Los Angeles, California 90095, USA
| | - Kelly Boeneman Gemill
- Center for Bio/Molecular Science and Engineering, Code 6900, US Naval Research Laboratory, SW Washington, Washington DC 20375, USA
| | - Muhammad Bilal
- Center for Environmental Implications of Nanotechnology, University of California, Los Angeles, California 90095-7227, USA
| | - Yoram Cohen
- Institute of the Environment and Sustainability, University of California, Los Angeles, California 90095-1496, USA
- Center for Environmental Implications of Nanotechnology, University of California, Los Angeles, California 90095-7227, USA
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, California 90095-1592, USA
| | - Igor L Medintz
- Center for Bio/Molecular Science and Engineering, Code 6900, US Naval Research Laboratory, SW Washington, Washington DC 20375, USA
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Piotrowski M, Jantas D, Szczepanowicz K, Łukasiewicz S, Lasoń W, Warszyński P. Polyelectrolyte-coated nanocapsules containing undecylenic acid: Synthesis, biocompatibility and neuroprotective properties. Colloids Surf B Biointerfaces 2015; 135:8-17. [DOI: 10.1016/j.colsurfb.2015.07.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 05/28/2015] [Accepted: 07/13/2015] [Indexed: 02/08/2023]
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Biocompatible long-sustained release oil-core polyelectrolyte nanocarriers: From controlling physical state and stability to biological impact. Adv Colloid Interface Sci 2015; 222:678-91. [PMID: 25453660 DOI: 10.1016/j.cis.2014.10.005] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 10/15/2014] [Accepted: 10/15/2014] [Indexed: 11/20/2022]
Abstract
It has been generally expected that the most applicable drug delivery system (DDS) should be biodegradable, biocompatible and with incidental adverse effects. Among many micellar aggregates and their mediated polymeric systems, polyelectrolyte oil-core nanocarriers have been found to successfully encapsulate hydrophobic drugs in order to target cells and avoid drug degradation and toxicity as well as to improve drug efficacy, its stability, and better intracellular penetration. This paper reviews recent developments in the formation of polyelectrolyte oil-core nanocarriers by subsequent multilayer adsorption at micellar structures, their imaging, physical state and stability, drug encapsulation and applications, in vitro release profiles and in vitro biological evaluation (cellular uptake and internalization, biocompatibility). We summarize the recent results concerning polyelectrolyte/surfactant interactions at interfaces, fundamental to understand the mechanisms of formation of stable polyelectrolyte layered structures on liquid cores. The fabrication of emulsion droplets stabilized by synergetic surfactant/polyelectrolyte complexes, properties, and potential applications of each type of polyelectrolyte oil-core nanocarriers, including stealth nanocapsules with pegylated shell, are discussed and evaluated.
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17
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Interaction of a fluorescent cationic surfactant bearing a coumarin derivative with DNA. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.09.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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18
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Preparation of the squalene-based capsules by membrane emulsification method and polyelectrolyte multilayer adsorption. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.09.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Szczepanowicz K, Warszyński P. Magnetically responsive liquid core polyelectrolyte nanocapsules. J Microencapsul 2014; 32:123-8. [DOI: 10.3109/02652048.2014.950709] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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20
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Łukasiewicz S, Szczepanowicz K. In vitro interaction of polyelectrolyte nanocapsules with model cells. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:1100-1107. [PMID: 24410319 DOI: 10.1021/la403610y] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The nanocapsules based on a liquid core with polyelectrolyte shells prepared by the technique of sequential adsorption of polyelectrolytes (LbL) were investigated to verify capsules bioacceptance. Using AOT (docusate sodium salt) as emulsifier, we obtained liquid cores, stabilized by the interfacial complex AOT/PLL (poly-l-lysine hydrobromide). These liquid cores were encapsulated by sequential adsorption of polyelectrolytes using biocompatible polyanion PGA (poly-l-glutamic acid sodium salt) and biocompatible polycation PLL. The average size of the formed capsules was 60-80 nm. The influence of a number of polyelectrolytes layer in the shell (thickness of polyelectrolytes shell), surface charge, and capsule doses on cell viability was studied in a cellular coculture assay. In order to improve nanocapsules biocompatibility, the PEG-ylated external layers were prepared using PGA-g-PEG (PGA grafted by PEG poly(ethylene glycol)). For the most toxic nanocapsules (with only one polycation layer) about 90% of cells could survive when the concentration of nanocapsules was below 0.2 × 10(6) per one cell. That suggests that they use as a delivery vehicles is quite safe for living cells. Analysis of internalization of AOT(PLL/PGA)4-g-PEG in HEK 293 cells indicates that tested nanocapsules can easily penetrate cells membrane.
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Affiliation(s)
- Sylwia Łukasiewicz
- Department of Physical Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University , 30-348 Krakow, Poland
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Santos SS, Lorenzoni A, Pegoraro NS, Denardi LB, Alves SH, Schaffazick SR, Cruz L. Formulation and in vitro evaluation of coconut oil-core cationic nanocapsules intended for vaginal delivery of clotrimazole. Colloids Surf B Biointerfaces 2014; 116:270-6. [PMID: 24503350 DOI: 10.1016/j.colsurfb.2014.01.011] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Revised: 12/22/2013] [Accepted: 01/08/2014] [Indexed: 11/29/2022]
Abstract
The objective of this work was to propose coconut oil-core nanocapsules prepared from Eudragit(®) RS100, a cationic polymer, and to evaluate their potential for vaginal delivery of clotrimazole in candidiasis. Nanocapsule suspensions loaded with clotrimazole at 1.0 and 3.0mg/mL were prepared by interfacial deposition of Eudragit(®) RS100. The physicochemical characterization showed average diameter lower than 200 nm, low polydispersity index, positive zeta potential (+10.94 to +14.57 mV), acid pH values (5.4-5.7) and encapsulation efficiencies close to 100%. After 60 days of storage at room temperature and protected from light, the nanocapsules were reasonably stable. Photodegradation studies showed that nanoencapsulation improved clotrimazole stability against UV radiation. The in vitro drug release at pH 4.5 was characterized by a prolonged release with no burst effect. The nanocapsules were more active than free clotrimazole against Candida albicans and Candida glabrata strains susceptible and resistant to fluconazole. Hence, clotrimazole-loaded coconut oil-core nanocapsules represent promising alternatives to the treatment of vulvovaginal candidiasis.
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Affiliation(s)
- Sara S Santos
- Departamento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria 97105-900, Brazil
| | - Alessandra Lorenzoni
- Departamento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria 97105-900, Brazil
| | - Natháli S Pegoraro
- Departamento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria 97105-900, Brazil
| | - Laura B Denardi
- Departamento de Microbiologia e Parasitologia, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Sydney H Alves
- Departamento de Microbiologia e Parasitologia, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Scheila R Schaffazick
- Departamento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria 97105-900, Brazil
| | - Letícia Cruz
- Departamento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria 97105-900, Brazil.
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Jeyadevi R, Sivasudha T, Rameshkumar A, Ananth DA, Aseervatham GSB, Kumaresan K, Kumar LD, Jagadeeswari S, Renganathan R. Enhancement of anti arthritic effect of quercetin using thioglycolic acid-capped cadmium telluride quantum dots as nanocarrier in adjuvant induced arthritic Wistar rats. Colloids Surf B Biointerfaces 2013; 112:255-63. [DOI: 10.1016/j.colsurfb.2013.07.065] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Revised: 07/27/2013] [Accepted: 07/30/2013] [Indexed: 01/08/2023]
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23
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Surface passivation of CdSe-TOPO quantum dots by poly(acrylic acid): solvent sensitivity and photo-induced emission in water. IRANIAN POLYMER JOURNAL 2013. [DOI: 10.1007/s13726-013-0187-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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