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Kai KC, Borges R, Pedroni ACF, Pelosine AM, da Cunha MR, Marques MM, de Araújo DR, Marchi J. Tricalcium phosphate-loaded injectable hydrogel as a promising osteogenic and bactericidal teicoplanin-delivery system for osteomyelitis treatment: An in vitro and in vivo investigation. BIOMATERIALS ADVANCES 2024; 164:213966. [PMID: 39094443 DOI: 10.1016/j.bioadv.2024.213966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 06/25/2024] [Accepted: 07/21/2024] [Indexed: 08/04/2024]
Abstract
Osteomyelitis is an inflammation of bone tissue usually caused by pyogenic bacteria. The most recurrent clinical approach consists of bone debridement followed by parenteral administration of antibiotics. However, systemic antibiotic treatment has limitations regarding absorption rate and bioavailability over time. The main challenge of osteomyelitis treatment consists of coupling the persistent infection treatment with the regeneration of the bone debrided. In this work, we developed an injectable drug delivery system based on poloxamer 407 hydrogel containing undoped Mg, Zn-doped tricalcium phosphate (β-TCP), and teicoplanin, a broad-spectrum antibiotic. We evaluated how the addition of teicoplanin and β-TCP affected the micellization, gelation, particle size, and surface charge of the hydrogel. Later, we studied the hydrogel degradation and drug delivery kinetics. Finally, the bactericidal, biocompatibility, and osteogenic properties were evaluated through in vitro studies and confirmed by in vivo Wistar rat models. Teicoplanin was found to be encapsulated in the corona portions of the hydrogel micelles, yielding a bigger hydrodynamics radius. The encapsulated teicoplanin showed a sustained release over the evaluated period, enough to trigger antibacterial properties against Gram-positive bacteria. Besides, the formulations were biocompatible and showed bone healing ability and osteogenic properties. Finally, in vivo studies confirmed that the proposed locally injected formulations yielded osteomyelitis treatment with superior outcomes than parenteral administration while promoting bone regeneration. In conclusion, the presented formulations are promising drug delivery systems for osteomyelitis treatment and deserve further technological improvements.
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Affiliation(s)
- Karen Cristina Kai
- Centro de Ciências Naturais e Humanas (CCNH), Universidade Federal do ABC (UFABC), Campus Santo André, SP, Brazil; Department of Morphology and Pathology, Jundiai Medical School, Jundiai, Brazil
| | - Roger Borges
- School of Biomedical Engineering, Faculdade Israelita de Ciências da Saúde Albert Einstein, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil.
| | | | - Agatha Maria Pelosine
- Centro de Ciências Naturais e Humanas (CCNH), Universidade Federal do ABC (UFABC), Campus Santo André, SP, Brazil.
| | - Marcelo Rodrigues da Cunha
- Department of Morphology and Pathology, Jundiai Medical School, Jundiai, Brazil; Interunits Graduate Program in Bioengineering (EESC/FMRP/IQSC), University of Sao Paulo (USP), Sao Carlos, Brazil
| | - Marcia Martins Marques
- Faculdade de Odontologia, Universidade de São Paulo, São Paulo, SP, Brazil; Postgraduation Program in Dentistry, Ibirapuera University, São Paulo, Brazil.
| | - Daniele Ribeiro de Araújo
- Centro de Ciências Naturais e Humanas (CCNH), Universidade Federal do ABC (UFABC), Campus Santo André, SP, Brazil.
| | - Juliana Marchi
- Centro de Ciências Naturais e Humanas (CCNH), Universidade Federal do ABC (UFABC), Campus Santo André, SP 09210-180, Brazil..
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Mohanty S, Swarup J, Priya S, Jain R, Singhvi G. Exploring the potential of polysaccharide-based hybrid hydrogel systems for their biomedical and therapeutic applications: A review. Int J Biol Macromol 2024; 256:128348. [PMID: 38007021 DOI: 10.1016/j.ijbiomac.2023.128348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 11/18/2023] [Accepted: 11/20/2023] [Indexed: 11/27/2023]
Abstract
Hydrogels are a versatile category of biomaterials that have been widely applied in the fields of biomedicine for the last several decades. The three-dimensional polymeric crosslinked hydrophilic structures of the hydrogel can proficiently hold drugs, nanoparticles, and cells, making them a potential delivery system. However, disadvantages like low mechanical strength, poor biocompatibility, and unusual in-vivo biodegradation are associated with conventional hydrogels. To overcome these hurdles, hybrid hydrogels are designed using two or more structurally different polymeric units. Polysaccharides, characterized by their innate biocompatibility, biodegradability, and abundance, establish an ideal foundation for the development of these hybrid hydrogels. This review aims to discuss the studies that have utilized naturally occurring polysaccharides to prepare hybrid systems, which were aimed for various biomedical applications such as tissue engineering, bone and cartilage regeneration, wound healing, skin cancer treatment, antimicrobial therapy, osteoarthritis treatment, and drug delivery. Furthermore, this review extensively examines the properties of the employed polysaccharides within hydrogel matrices, emphasizing the advantageous characteristics that make them a preferred choice. Furthermore, the challenges associated with the commercial implementation of these systems are explored alongside an assessment of the current patent landscape.
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Affiliation(s)
- Shambo Mohanty
- Industrial Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science (BITS) - Pilani, Pilani Campus, Rajasthan 333031, India
| | - Jayanti Swarup
- Industrial Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science (BITS) - Pilani, Pilani Campus, Rajasthan 333031, India
| | - Sakshi Priya
- Industrial Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science (BITS) - Pilani, Pilani Campus, Rajasthan 333031, India
| | - Rupesh Jain
- Industrial Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science (BITS) - Pilani, Pilani Campus, Rajasthan 333031, India
| | - Gautam Singhvi
- Industrial Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science (BITS) - Pilani, Pilani Campus, Rajasthan 333031, India.
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Thermosensitive system formed by poloxamers containing carvacrol: An effective carrier system against Leishmania amazonensis. Acta Trop 2023; 237:106744. [DOI: 10.1016/j.actatropica.2022.106744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 07/15/2022] [Accepted: 11/03/2022] [Indexed: 11/13/2022]
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4
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Batista CM, de Queiroz LA, Alves ÂV, Reis EC, Santos FA, Castro TN, Lima BS, Araújo AN, Godoy CA, Severino P, Cano A, Santini A, Capasso R, de Albuquerque Júnior RL, Cardoso JC, Souto EB. Photoprotection and skin irritation effect of hydrogels containing hydroalcoholic extract of red propolis: A natural pathway against skin cancer. Heliyon 2022; 8:e08893. [PMID: 35198766 PMCID: PMC8842011 DOI: 10.1016/j.heliyon.2022.e08893] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 09/30/2021] [Accepted: 01/29/2022] [Indexed: 12/13/2022] Open
Abstract
The use of natural products in sunscreen formulations as a prophylactic measure against skin cancer is receiving special attention attributed to the photoprotective and antioxidant properties of their chemical components. In this work, we describe the development of topical hydrogel formulations containing hydroalcoholic extract of red propolis (HERP), and the evaluation of the dermal sensitizing effect of the developed products. Sunscreen formulations composed of HERP in different concentrations (1.5, 2.5 or 3.5% w/w) alone or in combination with a chemical (octyl methoxycinnamate) and/or physical (titanium dioxide) filters were developed using poloxamer 407 as gel basis. The preliminary and accelerated stability tests, texture analysis and spreadability tests were performed. All formulations revealed to be stable in preliminary stability assessment. The formulations containing HERP 1.5 and 2.5% alone or associated with the filters showed intense modifications during accelerated stability test, which were confirmed by rheological analyses. The incorporation of HERP and filters in the poloxamer hydrogel decreased the toughness of product (p < 0.05) and the formulation containing HERP alone presented the lowest adhesivity (p < 0.001). The incorporation of HERP in the hydrogel decreased the poloxamer transition temperature, showing different rheological behavior with the increase of HERP concentration. The developed formulations were stable, exhibited non-Newtonian and pseudoplastic behavior, showing in vivo skin compatibility and no skin irritancy.
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Affiliation(s)
- Cinthia M. Batista
- Biotechnological Postgraduate Program, University of Tiradentes (Unit), Av. Murilo Dantas 300, 49010-390, Aracaju, Brazil
| | - Luma A. de Queiroz
- Biotechnological Postgraduate Program, University of Tiradentes (Unit), Av. Murilo Dantas 300, 49010-390, Aracaju, Brazil
| | - Ângela V.F. Alves
- Biotechnological Postgraduate Program, University of Tiradentes (Unit), Av. Murilo Dantas 300, 49010-390, Aracaju, Brazil
| | - Elisiane C.A. Reis
- Institute of Technology and Research (ITP), University of Tiradentes (Unit), Av. Murilo Dantas 300, 49010-390, Aracaju, Brazil
| | - Fagne A. Santos
- Biotechnological Postgraduate Program, University of Tiradentes (Unit), Av. Murilo Dantas 300, 49010-390, Aracaju, Brazil
| | - Tailaine N. Castro
- Biotechnological Postgraduate Program, University of Tiradentes (Unit), Av. Murilo Dantas 300, 49010-390, Aracaju, Brazil
| | - Bruno S. Lima
- Department of Pharmacy, Federal University of Sergipe, Aracaju, Sergipe, Brazil
| | - Adriano N.S. Araújo
- Department of Pharmacy, Federal University of Sergipe, Aracaju, Sergipe, Brazil
| | - Charles A.P. Godoy
- Biotechnological Postgraduate Program, University of Tiradentes (Unit), Av. Murilo Dantas 300, 49010-390, Aracaju, Brazil
| | - Patricia Severino
- Biotechnological Postgraduate Program, University of Tiradentes (Unit), Av. Murilo Dantas 300, 49010-390, Aracaju, Brazil
- Institute of Technology and Research (ITP), University of Tiradentes (Unit), Av. Murilo Dantas 300, 49010-390, Aracaju, Brazil
| | - Amanda Cano
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy, University of Barcelona, 08028, Barcelona, Spain
- Institute of Nanoscience and Nanotechnology, Universitat de Barcelona, 08028, Barcelona, Spain
| | - Antonello Santini
- Department of Pharmacy, University of Napoli Federico II, 80131, Napoli, Italy
| | - Raffaele Capasso
- Department of Agricultural Sciences, University of Naples Federico II, 80055, Portici, Naples, Italy
| | - Ricardo L.C. de Albuquerque Júnior
- Biotechnological Postgraduate Program, University of Tiradentes (Unit), Av. Murilo Dantas 300, 49010-390, Aracaju, Brazil
- Institute of Technology and Research (ITP), University of Tiradentes (Unit), Av. Murilo Dantas 300, 49010-390, Aracaju, Brazil
| | - Juliana C. Cardoso
- Biotechnological Postgraduate Program, University of Tiradentes (Unit), Av. Murilo Dantas 300, 49010-390, Aracaju, Brazil
- Institute of Technology and Research (ITP), University of Tiradentes (Unit), Av. Murilo Dantas 300, 49010-390, Aracaju, Brazil
- Corresponding author.
| | - Eliana B. Souto
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
- CEB—Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- LABBELS—Associate Laboratory, Braga, Guimarães, Portugal
- Corresponding author.
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Wang T, Kang W, Yang H, Li Z, Fan H, Zheng W, Zhu T, Aidarova S, Gabdullin M. Water-soluble grafted sodium polyacrylate with low concentration: Synthesis and thermal properties. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117837] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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6
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Mariano KCF, Papini JZB, de Faria NC, Heluany DNC, Botega ALL, Cereda CMS, de Paula E, Tófoli GR, de Araujo DR. Ropivacaine-Loaded Poloxamer Binary Hydrogels for Prolonged Regional Anesthesia: Structural Aspects, Biocompatibility, and Pharmacological Evaluation. BIOMED RESEARCH INTERNATIONAL 2021; 2021:7300098. [PMID: 34568494 PMCID: PMC8460376 DOI: 10.1155/2021/7300098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 08/11/2021] [Accepted: 08/21/2021] [Indexed: 11/17/2022]
Abstract
This study reports the development of thermosensitive hydrogels for delivering ropivacaine (RVC), a wide clinically used local anesthetic. For this purpose, poloxamer- (PL-) based hydrogels were synthesized for evaluating the influence of polymer concentration, hydrophilic-lipophilic balances, and binary system formation on biopharmaceutical properties and pharmacological performance. Transition temperatures were shifted, and rheological analysis revealed a viscoelastic behavior with enhanced elastic/viscous modulus relationship (G'/G " = 1.8 to 22 times), according to hydrogel composition and RVC incorporation. The RVC release from PL407 and PL407/338 systems followed the Higuchi model (R 2 = 0.923-0.989), indicating the drug diffusion from hydrogels to the medium. RVC-PL hydrogels were potentially biocompatible evoking low cytotoxic effects (in fibroblasts and Schwann cells) and mild/moderate inflammation signs on sciatic nerve nearby histological evaluation. In vivo pharmacological assays demonstrated that PL407 and PL407/338 evoked differential analgesic effects, by prolonging the sensory blockade duration up to ~340 and 250 min., respectively. All those results highlighted PL407 and PL407/338 as promising new strategies for sustaining analgesic effects during the postoperative period.
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Affiliation(s)
| | | | | | | | | | - Cíntia Maria Saia Cereda
- São Leopoldo Mandic Faculty, São Leopoldo Mandic Research Institute, Campinas, São Paulo, Brazil
| | - Eneida de Paula
- Department of Biochemistry, State University of Campinas, Campinas, São Paulo, Brazil
| | - Giovana Radomille Tófoli
- São Leopoldo Mandic Faculty, São Leopoldo Mandic Research Institute, Campinas, São Paulo, Brazil
| | - Daniele Ribeiro de Araujo
- Human and Natural Sciences Center, Federal University of ABC, Santo André, SP, Brazil
- Drugs and Bioactives Delivery Systems Research Group–SISLIBIO, Federal University of ABC, Av. dos Estados, 5001 Bl. A, T3, Lab. 503-3. Bangú, Santo André, SP, Brazil
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7
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Sulforaphane-loaded hyaluronic acid-poloxamer hybrid hydrogel enhances cartilage protection in osteoarthritis models. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 128:112345. [PMID: 34474895 DOI: 10.1016/j.msec.2021.112345] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 07/03/2021] [Accepted: 07/26/2021] [Indexed: 12/29/2022]
Abstract
Sulforaphane (SFN) is an isothiocyanate with anti-arthritic and immuno-regulatory activities, supported by the downregulation of NF-κB pathway, reduction on metalloproteinases expression and prevention of cytokine-induced cartilage degeneration implicated in OA progression. SFN promising pharmacological effects associated to its possible use, by intra-articular route and directly in contact to the site of action, highlight SFN as promising candidate for the development of drug-delivery systems. The association of poloxamers (PL) and hyaluronic acid (HA) supports the development of osteotrophic and chondroprotective pharmaceutical formulations. This study aims to develop PL-HA hybrid hydrogels as delivery systems for SFN intra-articular release and evaluate their biocompatibility and efficacy for osteoarthritis treatment. All formulations showed viscoelastic behavior and cubic phase organization. SFN incorporation and drug loading showed a concentration-dependent behavior following HA addition. Drug release profiles were influenced by both diffusion and relaxation of polymeric chains mechanisms. The PL407-PL338-HA-SFN hydrogel did not evoke pronounced cytotoxic effects on either osteoblast or chondrosarcoma cell lines. In vitro/ex vivo pharmacological evaluation interfered with an elevated activation of NF-κB and COX-2, increased the type II collagen expression, and inhibited proteoglycan depletion. These results highlight the biocompatibility and the pharmacological efficacy of PL-HA hybrid hydrogels as delivery systems for SFN intra-articular release for OA treatment.
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8
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Teixeira CV, Alencar Marques Y, Carvalho de Abreu Fantini M, Rocha Santos Bittencourt D, Pinto Oliveira CL. Structural Investigation of Diol and Triol Poly(oxypropylene)‐Poly(oxyethylene) Block Copolymers Micelles: Composition Dependence, Temperature Response and Clouding Behavior. J SURFACTANTS DETERG 2021. [DOI: 10.1002/jsde.12494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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9
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Shen J, Pan X, Bhatia SR. Self-assembly and thermoreversible rheology of perfluorocarbon nanoemulsion-based gels with amphiphilic copolymers. Colloids Surf B Biointerfaces 2021; 202:111641. [PMID: 33706161 DOI: 10.1016/j.colsurfb.2021.111641] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 12/28/2020] [Accepted: 02/13/2021] [Indexed: 01/23/2023]
Abstract
Perfluorocarbon (PFC) nanoemulsions have great potential in biomedical applications due to their unique chemical stability, biocompatibility, and possibilities for enhanced oxygen supply. The addition of amphiphilic block copolymers promotes the formation and long-term stability of emulsion-based gels. In this work, we report the systematic study of the impact of adding amphiphilic triblock copolymers to water-in-perfluorocarbon nanoemulsions on their structure and viscoelasticity, utilizing small-angle neutron and X-ray scattering (SANS and SAXS) and rheology. We find that an intermediate concentration of copolymer yields the highest strength of attraction between droplets, corresponding to a maximum in the elasticity and storage modulus. The stability and viscoelastic moduli can be tuned via the amount of copolymer and surfactant along with the volume fraction of aqueous phase. SANS provides the detail on nanostructure and can be fit to a spherical core-shell form factor with a square-well hard sphere structure factor. The PFC nanoemulsion system displays thermoresponsive and thermoreversible properties in temperature sweeps.
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Affiliation(s)
- Jiachun Shen
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794-3400, USA
| | - Xiaoming Pan
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Surita R Bhatia
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794-3400, USA.
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10
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Vigato AA, Querobino SM, de Faria NC, Candido ACBB, Magalhães LG, Cereda CMS, Tófoli GR, Campos EVR, Machado IP, Fraceto LF, de Sairre MI, de Araujo DR. Physico-Chemical Characterization and Biopharmaceutical Evaluation of Lipid-Poloxamer-Based Organogels for Curcumin Skin Delivery. Front Pharmacol 2019; 10:1006. [PMID: 31572185 PMCID: PMC6751402 DOI: 10.3389/fphar.2019.01006] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 08/08/2019] [Indexed: 12/19/2022] Open
Affiliation(s)
- Aryane Alves Vigato
- Human and Natural Sciences Center, ABC Federal University, Santo André, Brazil
| | | | | | | | - Lizandra Guidi Magalhães
- Research Group on Natural Products, Center for Research in Sciences and Technology, University of Franca, Franca, Brazil
| | | | | | - Estefânia Vangelie Ramos Campos
- Human and Natural Sciences Center, ABC Federal University, Santo André, Brazil
- Department of Environmental Engineering, State University “Júlio de Mesquita Filho”, Sorocaba, Brazil
| | - Ian Pompermayer Machado
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, São Paulo, Brazil
| | | | | | - Daniele Ribeiro de Araujo
- Human and Natural Sciences Center, ABC Federal University, Santo André, Brazil
- *Correspondence: Daniele Ribeiro de Araujo, ;
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11
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Thompson AL, Mensah LM, Love BJ. The effect of cisplatin on the nanoscale structure of aqueous PEO-PPO-PEO micelles of varying hydrophilicity observed using SAXS. SOFT MATTER 2019; 15:3970-3977. [PMID: 31017159 DOI: 10.1039/c9sm00071b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Aqueous solutions of polyethylene oxide-polypropylene oxide-polyethylene oxide (PEO-PPO-PEO) copolymers form micelles and cubic lattices as their temperature is raised. The presence of added solutes within the dispersions can also affect the kinetics of structure formation. Here, we investigate the structures formed in the amphiphiles P104, P105, and F108 solutions at 31% mass per v both neat and co-formulated with the drug cisplatin (0.02% to 0.1% mass per v) using small-angle X-ray scattering. P104 formed BCC colloidal crystals while P105 and F108 formed FCC structures. Cisplatin had a minor influence of the formation and stability of the crystals during these thermal excursions. The largest interaction between the amphiphiles and cisplatin was P104 where there was a 2% reduction in the BCC lattice parameter of P104 as cisplatin loading rose to 0.1% at 28 °C. The F108 unit cell swelled ∼2% upon cisplatin loading of 0.1%. A progressive evolution and breakdown of these structures was noted as the temperature rose from 10 °C to 35 °C. For the different amphiphiles, crystal thermal expansion coefficients of ∼1 × 10-2 °C-1 were determined in neat and loaded amphiphiles with cisplatin and all the crystals swelled with increasing temperature.
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Affiliation(s)
- Andre L Thompson
- Department of Materials Science and Engineering, University of Michigan, Room 2046 H. H. Dow Bldg, Ann Arbor, MI 48109, USA.
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12
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Influence of Pluronic F127 microenvironments on the photochemical nitric oxide release from S-nitrosoglutathione. J Colloid Interface Sci 2019; 544:217-229. [DOI: 10.1016/j.jcis.2019.02.087] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 02/22/2019] [Accepted: 02/26/2019] [Indexed: 12/21/2022]
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13
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Senthilkumar M, Dash S. Interaction of methylparaben and propylparaben with P123/F127 mixed polymeric micelles. Colloids Surf B Biointerfaces 2019; 176:140-149. [DOI: 10.1016/j.colsurfb.2018.12.068] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 12/28/2018] [Accepted: 12/29/2018] [Indexed: 10/27/2022]
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14
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The Controlled Release and Anti-Inflammatory Activity of a Tetramethylpyrazine-Loaded Thermosensitive Poloxamer Hydrogel. Pharm Res 2019; 36:52. [DOI: 10.1007/s11095-019-2580-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Accepted: 01/22/2019] [Indexed: 11/25/2022]
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15
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Vigato AA, Querobino SM, de Faria NC, de Freitas ACP, Leonardi GR, de Paula E, Cereda CMS, Tófoli GR, de Araujo DR. Synthesis and characterization of nanostructured lipid-poloxamer organogels for enhanced skin local anesthesia. Eur J Pharm Sci 2019; 128:270-278. [PMID: 30553060 DOI: 10.1016/j.ejps.2018.12.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 11/21/2018] [Accepted: 12/11/2018] [Indexed: 01/06/2023]
Abstract
The aim of this study was to synthesize a novel drug delivery system using organogels (ORGs) and characterize its physicochemical properties, in vitro and ex vivo permeation abilities, cytotoxicity and in vivo local anesthetic effects. The ORG formulations contained a mixture of oleic acid-lanolin (OA-LAN), poloxamer (PL407), and the commonly used local anesthetic lidocaine (LDC). The main focus was to evaluate the impact of LAN and PL407 concentrations on the ORG structural features and their biopharmaceutical performance. Results revealed that LDC, OA, and LAN incorporation separately shifted the systems transitions phase temperatures and modified the elastic/viscous moduli relationships (G'/G″ = ~15×). Additionally, the formulation with the highest concentrations of LAN and PL407 reduced the LDC flux from ~17 to 12 μg·cm-2·h-1 and the permeability coefficients from 1.2 to 0.62 cm·h-1 through ex vivo skin. In vivo pharmacological evaluation showed that the ORG-based drug delivery system presented low cytotoxicity, increased and prolonged the local anesthetic effects compared to commercial alternatives. The data from this study indicate that ORG represent a promising new approach to effectively enhance the topical administration of local anesthetics.
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Drug-Loaded Biocompatible Nanocarriers Embedded in Poloxamer 407 Hydrogels as Therapeutic Formulations. MEDICINES 2018; 6:medicines6010007. [PMID: 30597953 PMCID: PMC6473859 DOI: 10.3390/medicines6010007] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 12/19/2018] [Accepted: 12/28/2018] [Indexed: 02/07/2023]
Abstract
Hydrogels are three-dimensional networks of hydrophilic polymers able to absorb and retain a considerable amount of water or biological fluid while maintaining their structure. Among these, thermo-sensitive hydrogels, characterized by a temperature-dependent sol–gel transition, have been massively used as drug delivery systems for the controlled release of various bioactives. Poloxamer 407 (P407) is an ABA-type triblock copolymer with a center block of hydrophobic polypropylene oxide (PPO) between two hydrophilic polyethyleneoxide (PEO) lateral chains. Due to its unique thermo-reversible gelation properties, P407 has been widely investigated as a temperature-responsive material. The gelation phenomenon of P407 aqueous solutions is reversible and characterized by a sol–gel transition temperature. The nanoencapsulation of drugs within biocompatible delivery systems dispersed in P407 hydrogels is a strategy used to increase the local residence time of various bioactives at the injection site. In this mini-review, the state of the art of the most important mixed systems made up of colloidal carriers localized within a P407 hydrogel will be provided in order to illustrate the possibility of obtaining a controlled release of the entrapped drugs and an increase in their therapeutic efficacy as a function of the biomaterial used.
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Wei D, Ge L, Guo R. Effect of hydrophilically modified ibuprofen on thermoresponsive gelation of pluronic copolymer. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.05.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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18
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Boonlai W, Tantishaiyakul V, Hirun N, Sangfai T, Suknuntha K. Thermosensitive Poloxamer 407/Poly(Acrylic Acid) Hydrogels with Potential Application as Injectable Drug Delivery System. AAPS PharmSciTech 2018; 19:2103-2117. [PMID: 29696613 DOI: 10.1208/s12249-018-1010-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 04/03/2018] [Indexed: 12/26/2022] Open
Abstract
Thermosensitive hydrogels are of great interest for in situ gelling drug delivery. The thermosensitive vehicle with a gelation temperature in a range of 30-36°C would be convenient to be injected as liquid and transform into gel after injection. To prepare novel hydrogels gelling near body temperature, the gelation temperature of poloxamer 407 (PX) were tailored by mixing PX with poly(acrylic acid) (PAA). The gelation behaviors of PX/PAA systems as well as the interaction mechanism were investigated by tube inversion, viscoelastic, shear viscosity, DSC, SEM, and FTIR studies. The gelation temperature of the plain PX solutions at high concentration of 18, 20, and 22% (w/w) gelled at temperature below 28°C, which is out of the suitable temperature range. Mixing PX with PAA to obtain 18 and 20% (w/w) PX with 1% (w/w) PAA increased the gelation temperature to the desired temperature range of 30-36°C. The intermolecular entanglements and hydrogen bonds between PX and PAA may be responsible for the modulation of the gelation features of PX. The mixtures behaved low viscosity liquid at room temperature with shear thinning behavior enabling their injectability and rapidly gelled at body temperature. The gel strength increased, while the pore size decreased with increasing PX concentration. Metronidazole, an antibiotic used for periodontitis, was incorporated into the matrices, and the drug did not hinder their gelling ability. The gels showed the sustained drug release characteristic. The thermosensitive PX/PAA hydrogel could be a promising injectable in situ gelling system for periodontal drug delivery.
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Krtalić I, Radošević S, Hafner A, Grassi M, Nenadić M, Cetina-Čižmek B, Filipović-Grčić J, Pepić I, Lovrić J. D-Optimal Design in the Development of Rheologically Improved In Situ Forming Ophthalmic Gel. J Pharm Sci 2018; 107:1562-1571. [DOI: 10.1016/j.xphs.2018.01.019] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 12/29/2017] [Accepted: 01/24/2018] [Indexed: 10/18/2022]
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Boonlai W, Tantishaiyakul V, Hirun N, Phaisan S, Uma T. The effect of the preservative methylparaben on the thermoresponsive gelation behavior of aqueous solutions of poloxamer 407. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.05.120] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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21
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Dehvari K, Lin KS, Hammouda B. Small-angle neutron scattering studies of microenvironmental and structural changes of Pluronic micelles upon encapsulation of paclitaxel. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2016.11.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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22
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Akkari AC, Papini JZB, Garcia GK, Franco MKD, Cavalcanti LP, Gasperini A, Alkschbirs MI, Yokaichyia F, de Paula E, Tófoli GR, de Araujo DR. Poloxamer 407/188 binary thermosensitive hydrogels as delivery systems for infiltrative local anesthesia: Physico-chemical characterization and pharmacological evaluation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 68:299-307. [DOI: 10.1016/j.msec.2016.05.088] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2016] [Revised: 04/06/2016] [Accepted: 05/20/2016] [Indexed: 11/28/2022]
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Mello JCD, Moraes VWR, Watashi CM, da Silva DC, Cavalcanti LP, Franco MKKD, Yokaichiya F, de Araujo DR, Rodrigues T. Enhancement of chlorpromazine antitumor activity by Pluronics F127/L81 nanostructured system against human multidrug resistant leukemia. Pharmacol Res 2016; 111:102-112. [DOI: 10.1016/j.phrs.2016.05.032] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 05/06/2016] [Accepted: 05/31/2016] [Indexed: 01/01/2023]
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Budesonide-hydroxypropyl-β-cyclodextrin inclusion complex in binary poloxamer 407/403 system for ulcerative colitis treatment: A physico-chemical study from micelles to hydrogels. Colloids Surf B Biointerfaces 2016; 138:138-47. [DOI: 10.1016/j.colsurfb.2015.11.048] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 11/18/2015] [Accepted: 11/25/2015] [Indexed: 01/13/2023]
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Pragatheeswaran AM, Chen SB. The influence of poly(acrylic acid) on micellization and gelation characteristics of aqueous Pluronic F127 copolymer system. Colloid Polym Sci 2015. [DOI: 10.1007/s00396-015-3757-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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dos Santos ACM, Akkari ACS, Ferreira IRS, Maruyama CR, Pascoli M, Guilherme VA, de Paula E, Fraceto LF, de Lima R, Melo PDS, de Araujo DR. Poloxamer-based binary hydrogels for delivering tramadol hydrochloride: sol-gel transition studies, dissolution-release kinetics, in vitro toxicity, and pharmacological evaluation. Int J Nanomedicine 2015; 10:2391-401. [PMID: 25848258 PMCID: PMC4381629 DOI: 10.2147/ijn.s72337] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
In this work, poloxamer (PL)-based binary hydrogels, composed of PL 407 and PL 188, were studied with regard to the physicochemical aspects of sol-gel transition and pharmaceutical formulation issues such as dissolution-release profiles. In particular, we evaluated the cytotoxicity, genotoxicity, and in vivo pharmacological performance of PL 407 and PL 407-PL 188 hydrogels containing tramadol (TR) to analyze its potential treatment of acute pain. Drug-micelle interaction studies showed the formation of PL 407-PL 188 binary systems and the drug partitioning into the micelles. Characterization of the sol-gel transition phase showed an increase on enthalpy variation values that were induced by the presence of TR hydrochloride within the PL 407 or PL 407-PL 188 systems. Hydrogel dissolution occurred rapidly, with approximately 30%-45% of the gel dissolved, reaching ~80%-90% up to 24 hours. For in vitro release assays, formulations followed the diffusion Higuchi model and lower K(rel) values were observed for PL 407 (20%, K(rel) = 112.9 ± 10.6 μg · h(-1/2)) and its binary systems PL 407-PL 188 (25%-5% and 25%-10%, K(rel) =80.8 ± 6.1 and 103.4 ± 8.3 μg · h(-1/2), respectively) in relation to TR solution (K(rel) =417.9 ± 47.5 μg · h(-1/2), P<0.001). In addition, the reduced cytotoxicity (V79 fibroblasts and hepatocytes) and genotoxicity (V79 fibroblasts), as well as the prolonged analgesic effects (>72 hours) pointed to PL-based hydrogels as a potential treatment, by subcutaneous injection, for acute pain.
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Affiliation(s)
| | | | | | | | - Monica Pascoli
- Departamento de Biotecnologia, Universidade de Sorocaba, Sorocaba, São Paulo, Brazil
| | | | - Eneida de Paula
- Departamento de Bioquímica, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil
| | - Leonardo Fernandes Fraceto
- Departamento de Engenharia Ambiental, Universidade Estadual 'Júlio de Mesquita Filho', Sorocaba, São Paulo, Brazil
| | - Renata de Lima
- Departamento de Biotecnologia, Universidade de Sorocaba, Sorocaba, São Paulo, Brazil
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Oshiro A, da Silva DC, de Mello JC, de Moraes VWR, Cavalcanti LP, Franco MKKD, Alkschbirs MI, Fraceto LF, Yokaichiya F, Rodrigues T, de Araujo DR. Pluronics f-127/l-81 binary hydrogels as drug-delivery systems: influence of physicochemical aspects on release kinetics and cytotoxicity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:13689-13698. [PMID: 25343461 DOI: 10.1021/la503021c] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We investigated the structure of the binary mixture of Pluronic F-127 (PL F-127) and Pluronic L-81 (PL L-81), as hydrogels for sumatriptan delivery and investigated the mixture possible use via subcutaneous route for future applications as a long-acting antimigraine formulation. We studied the drug-micelle interaction by dynamic light scattering and differential scanning calorimetry, sol-gel process by rheology, and small-angle X-ray scattering (SAXS). We also employed pharmaceutical formulation aspects by dissolution rate, release profile, and cytotoxicity studies for apoptosis and/or necrosis in fibroblasts (3T3) and neural cells (Neuro 2a). Micellar hydrodynamic diameter studies revealed the formation of binary PL-micelles by association of PL F-127/PL L-81. The mixed micelle and binary hydrogels formation was also verified by only one phase transition temperature for all formulations, even in the presence of sumatriptan. The characterization of the hydrogel supramolecular organization by SAXS, rheology studies, and in vitro dissolution/release results showed a probable relationship between the transition of the lamellar to the hexagonal phase and the lower release constant values observed, indicating that PL L-81 participates in micelle-hydrogel formation and aggregation processes. Furthermore, the reduced cytotoxicity (annexin V-fluorescein isothiocyanate positive staining), with minor PL L-81 concentration, points to its potential use for the development of binary PL-systems containing sumatriptan capable of modulating the gelation process. This use may employ the minimum PL concentration and be interesting for pharmaceutical applications, particularly for migraine treatment.
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Affiliation(s)
- Alisson Oshiro
- Human and Natural Sciences Center, ABC Federal University , Santo André, SP 09210-580, Brazil
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Dey J, Kumar S, Nath S, Ganguly R, Aswal V, Ismail K. Additive induced core and corona specific dehydration and ensuing growth and interaction of Pluronic F127 micelles. J Colloid Interface Sci 2014; 415:95-102. [DOI: 10.1016/j.jcis.2013.10.019] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 10/04/2013] [Accepted: 10/05/2013] [Indexed: 11/29/2022]
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29
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Parekh P, Dey J, Kumar S, Nath S, Ganguly R, Aswal V, Bahadur P. Butanol solubilization in aqueous F127 solution: Investigating the enhanced micellar solvation and consequent improvement in gelation characteristics. Colloids Surf B Biointerfaces 2014; 114:386-91. [DOI: 10.1016/j.colsurfb.2013.10.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Revised: 10/21/2013] [Accepted: 10/22/2013] [Indexed: 10/26/2022]
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30
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Poloxamers as Drug-Delivery Systems: Physicochemical, Pharmaceutical, and Toxicological Aspects. Nanotoxicology 2014. [DOI: 10.1007/978-1-4614-8993-1_13] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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31
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Micutz M, Matalon E, Staicu T, Angelescu D, Ariciu AM, Rogozea A, Turcu IM, Ionita G. The influence of hydroxy propyl β-cyclodextrin on the micellar to gel transition in F127 solutions investigated at macro and nanoscale levels. NEW J CHEM 2014. [DOI: 10.1039/c4nj00123k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Barradas TN, Lopes LMA, Ricci-Júnior E, de Holanda e Silva KG, Mansur CRE. Development and characterization of micellar systems for application as insect repellents. Int J Pharm 2013; 454:633-40. [DOI: 10.1016/j.ijpharm.2013.05.050] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Revised: 05/17/2013] [Accepted: 05/19/2013] [Indexed: 10/26/2022]
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33
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Thermodynamic properties of aqueous PEO–PPO–PEO micelles with added methylparaben determined by differential scanning calorimetry. J Colloid Interface Sci 2013; 398:270-2. [DOI: 10.1016/j.jcis.2013.01.064] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2012] [Revised: 01/30/2013] [Accepted: 01/31/2013] [Indexed: 11/19/2022]
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34
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Zhu Q, Sun C, Yan J, Yang K, Fu R, Mao C, Shen J. Facile Fabrication of Au–F127 Nanocolloids with Different Morphologies and their Potential Bioapplications. Aust J Chem 2013. [DOI: 10.1071/ch12482] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Three kinds of novel facile fabrication routes to prepare Au–F127 nanocolloids with different morphologies including rambutan-like Au–F127 hybrid nanospheres, Au@F127 core–shell nanostructure, and multiple shapes of Au nanosheets are reported. The different Au–F127 nanocolloids are characterised by transmission electron microscopy, electron diffraction patterns, and UV-vis spectroscopy. The different formation mechanisms of the Au–F127 nanocolloids with different morphologies are discussed. The intrinsic properties and application potential of Au–F127 nanocolloids are determined by their size, shape, composition, and structure. A biosensor made of rambutan-like Au–F127 hybrid nanospheres exhibited a good electrocatalytic activity for the reduction of hydrogen peroxide. The Au@F127 core–shell nanoparticles exhibited good blood compatibility attributable to the surface hydrophilicity of the F127 layer. These strategies open up the exciting possibility of using F127 in synthesis of gold nanomaterials of variable morphology, and provide a promising platform for biomedical applications in future.
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Khimani M, Ganguly R, Aswal VK, Nath S, Bahadur P. Solubilization of parabens in aqueous Pluronic solutions: investigating the micellar growth and interaction as a function of paraben composition. J Phys Chem B 2012; 116:14943-50. [PMID: 23210422 DOI: 10.1021/jp308738s] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The influence of methyl paraben (MP) and butyl paraben (BP) on the aggregation characteristics of Pluronics in an aqueous medium has been investigated by DLS, SANS, viscometry, and fluorescence measurement techniques. Parabens are extensively used as preservatives in cosmetic, pharmaceutical, and food products. In this paper, we show that their influence on the restructuring and growth of Pluronics micelles vary quite significantly with their aqueous solubility and with the composition of Pluronics. In the case of P105 and P104, MP reduces the sphere-to-rod transition temperature down to room temperature, but BP with significantly less aqueous solubility than MP suppresses such micellar transition and leads to the formation of micellar clusters due to the onset of intermicellar attractive interaction. In the case of more hydrophobic Pluronic P103, on the other hand, both MP and BP are able to induce rapid room temperature sphere-to-rod micellar growth, which is not observed in the presence of water structure making salts like NaCl and Na(3)PO(4). These observations have been attributed to modulation of growth and restructuring processes of the Pluronic micelles arising due to different locations of parabens within the micellar corona as determined by their aqueous solubility and the hydrophobicity of the Pluronics.
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Affiliation(s)
- M Khimani
- Department of Chemistry, Veer Narmad South Gujarat University, Surat-395007, India
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36
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Microstructure transition of hydrophilic modified ibuprofen and Pluronic copolymer F127 complexes. Colloid Polym Sci 2012. [DOI: 10.1007/s00396-012-2859-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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37
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van Hemelrijck C, Müller-Goymann CC. Rheological characterization and permeation behavior of poloxamer 407-based systems containing 5-aminolevulinic acid for potential application in photodynamic therapy. Int J Pharm 2012; 437:120-9. [DOI: 10.1016/j.ijpharm.2012.07.048] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2012] [Accepted: 07/20/2012] [Indexed: 11/28/2022]
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38
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Ricardo NM, Ricardo NM, Costa FDM, Bezerra FW, Chaibundit C, Hermida-Merino D, Greenland BW, Burattini S, Hamley IW, Keith Nixon S, Yeates SG. Effect of water-soluble polymers, polyethylene glycol and poly(vinylpyrrolidone), on the gelation of aqueous micellar solutions of Pluronic copolymer F127. J Colloid Interface Sci 2012; 368:336-41. [DOI: 10.1016/j.jcis.2011.10.062] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Revised: 10/25/2011] [Accepted: 10/28/2011] [Indexed: 10/15/2022]
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Meznarich NAK, Juggernauth KA, Batzli KM, Love BJ. Structural Changes in PEO–PPO–PEO Gels Induced by Methylparaben and Dexamethasone Observed Using Time-Resolved SAXS. Macromolecules 2011. [DOI: 10.1021/ma2015358] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Norman A. K. Meznarich
- Department of Materials Science and Engineering, ‡Macromolecular Science and Engineering Research Center, §Department of Biomedical Engineering, and ⊥Dental & Biologic Materials (Dental School), University of Michigan, 2300 Hayward Street, Ann Arbor, Michigan 48109, United States
| | - K. Anne Juggernauth
- Department of Materials Science and Engineering, ‡Macromolecular Science and Engineering Research Center, §Department of Biomedical Engineering, and ⊥Dental & Biologic Materials (Dental School), University of Michigan, 2300 Hayward Street, Ann Arbor, Michigan 48109, United States
| | - Kiersten M. Batzli
- Department of Materials Science and Engineering, ‡Macromolecular Science and Engineering Research Center, §Department of Biomedical Engineering, and ⊥Dental & Biologic Materials (Dental School), University of Michigan, 2300 Hayward Street, Ann Arbor, Michigan 48109, United States
| | - Brian J. Love
- Department of Materials Science and Engineering, ‡Macromolecular Science and Engineering Research Center, §Department of Biomedical Engineering, and ⊥Dental & Biologic Materials (Dental School), University of Michigan, 2300 Hayward Street, Ann Arbor, Michigan 48109, United States
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Meznarich NAK, Love BJ. The Kinetics of Gel Formation for PEO−PPO−PEO Triblock Copolymer Solutions and the Effects of Added Methylparaben. Macromolecules 2011. [DOI: 10.1021/ma200302s] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Norman A. K. Meznarich
- Department of Materials Science and Engineering, University of Michigan, 2300 Hayward Street, Ann Arbor, Michigan 48109, United States
| | - Brian J. Love
- Department of Materials Science and Engineering, University of Michigan, 2300 Hayward Street, Ann Arbor, Michigan 48109, United States
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Chaibundit C, Ricardo NM, Ricardo NM, Muryn CA, Madec MB, Yeates SG, Booth C. Effect of ethanol on the gelation of aqueous solutions of Pluronic F127. J Colloid Interface Sci 2010; 351:190-6. [DOI: 10.1016/j.jcis.2010.07.023] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2010] [Revised: 07/09/2010] [Accepted: 07/10/2010] [Indexed: 10/19/2022]
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42
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Synthesis and physical gels of pH- and thermo-responsive tertiary amine methacrylate based ABA triblock copolymers and drug release studies. POLYMER 2010. [DOI: 10.1016/j.polymer.2010.06.010] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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43
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O'Callaghan JM, McNamara H, Copley MP, Hanrahan JP, Morris MA, Steytler DC, Heenan RK, Holmes JD. Swelling of ionic and nonionic surfactant micelles by high pressure gases. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:7725-7731. [PMID: 20148596 DOI: 10.1021/la904464k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The influence of different solvent environments on the size, shape, and characteristics of surfactant micelles of Pluronic F127 and CTAB was investigated by small-angle neutron scattering (SANS). SANS experiments were undertaken on dilute micellar surfactant solutions of F127 and CTAB that between them were exposed to liquid and supercritical carbon dioxide, liquid propane, ethane, and heptane under various pressures and temperatures. Swelling of the surfactant micelles could be directly related to the solubility of the solvents within the micelles, especially within their cores. Carbon dioxide produced the largest swelling of the Pluronic F127 micelles, compared to propane and ethane, which mirrors the solubility of the gases in the PPO core of the micelles. Conversely, the extent of swelling of the cores of CTAB micelles was greater with propane compared to carbon dioxide, which again relates to the solubility of the solvents in the alkane core of the CTAB micelles.
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Affiliation(s)
- John M O'Callaghan
- Materials and Supercritical Fluids Group, Department of Chemistry, Tyndall National Institute, University College Cork, Cork, Ireland
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