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Hirun N, Kraisit P, Santhan S. Mixed Micellar Gel of Poloxamer Mixture for Improved Solubilization of Poorly Water-Soluble Ibuprofen and Use as Thermosensitive In Situ Gel. Pharmaceutics 2024; 16:1055. [PMID: 39204400 PMCID: PMC11359337 DOI: 10.3390/pharmaceutics16081055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2024] [Revised: 08/05/2024] [Accepted: 08/08/2024] [Indexed: 09/04/2024] Open
Abstract
The aqueous solution of binary mixtures of amphiphilic copolymers is a potential platform for fabricating mixed polymeric micelles for pharmaceutical applications, particularly in developing drug delivery depots for a poorly water-soluble compound. This study fabricated and investigated binary mixtures of poloxamer 403 (P403) and poloxamer 407 (P407) at varying P403:P407 molar ratios to develop a vehicle for the poorly water-soluble compound, using ibuprofen as a model drug. The cooperative formation of mixed micelles was obtained, and the solubility of ibuprofen in the binary mixtures was enhanced compared to the solubility in pure water and an aqueous single P407 solution. The binary mixture with the P403:P407 molar ratio of 0.75:0.25 at a total polymer concentration of 19% w/v exhibited the temperature dependence of micellization and sol-to-gel characteristics of the thermosensitive mixed micellar gels. It possessed suitable micellization and gelation characteristics for in situ gelling systems. The release of ibuprofen from the thermosensitive mixed micellar depots was sustained through a diffusion-controlled mechanism. The findings can aid in formulating binary mixtures of P403 and P407 to achieve the desired properties of mixed micelles and micellar gels.
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Affiliation(s)
- Namon Hirun
- Thammasat University Research Unit in Smart Materials and Innovative Technology for Pharmaceutical Applications (SMIT-Pharm), Faculty of Pharmacy, Thammasat University, Pathumthani 12120, Thailand; (P.K.); (S.S.)
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2
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Apostolides D, Michael G, Patrickios CS, Notredame B, Zhang Y, Gohy JF, Prévost S, Gradzielski M, Jung FA, Papadakis CM. Dynamic Covalent Amphiphilic Polymer Conetworks Based on End-Linked Pluronic F108: Preparation, Characterization, and Evaluation as Matrices for Gel Polymer Electrolytes. ACS APPLIED MATERIALS & INTERFACES 2024; 16. [PMID: 38669089 PMCID: PMC11082838 DOI: 10.1021/acsami.3c19189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 04/18/2024] [Accepted: 04/19/2024] [Indexed: 04/28/2024]
Abstract
We present the development of a platform of well-defined, dynamic covalent amphiphilic polymer conetworks (APCN) based on an α,ω-dibenzaldehyde end-functionalized linear amphiphilic poly(ethylene glycol)-b-poly(propylene glycol)-b-poly(ethylene glycol) (PEG-b-PPG-b-PEG, Pluronic) copolymer end-linked with a triacylhydrazide oligo(ethylene glycol) triarmed star cross-linker. The developed APCNs were characterized in terms of their rheological (increase in the storage modulus by a factor of 2 with increase in temperature from 10 to 50 °C), self-healing, self-assembling, and mechanical properties and evaluated as a matrix for gel polymer electrolytes (GPEs) in both the stretched and unstretched states. Our results show that water-loaded APCNs almost completely self-mend, self-organize at room temperature into a body-centered cubic structure with long-range order exhibiting an aggregation number of around 80, and display an exceptional room temperature stretchability of ∼2400%. Furthermore, ionic liquid-loaded APCNs could serve as gel polymer electrolytes (GPEs), displaying a substantial ion conductivity in the unstretched state, which was gradually reduced upon elongation up to a strain of 4, above which it gradually increased. Finally, it was found that recycled (dissolved and re-formed) ionic liquid-loaded APCNs could be reused as GPEs preserving 50-70% of their original ion conductivity.
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Affiliation(s)
| | - George Michael
- Department
of Chemistry, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus
| | - Costas S. Patrickios
- Department
of Chemistry, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus
| | - Benoît Notredame
- Institute
for Condensed Matter and Nanosciences (IMCN), Bio- and Soft Matter
(BSMA), Université Catholique de
Louvain (UCL), Place Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Yinghui Zhang
- Institute
for Condensed Matter and Nanosciences (IMCN), Bio- and Soft Matter
(BSMA), Université Catholique de
Louvain (UCL), Place Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Jean-François Gohy
- Institute
for Condensed Matter and Nanosciences (IMCN), Bio- and Soft Matter
(BSMA), Université Catholique de
Louvain (UCL), Place Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Sylvain Prévost
- Institut
Max von Laue—Paul Langevin (ILL), 71, Avenue des Martyrs—CS 20156, 38042 Grenoble Cedex 9, France
| | - Michael Gradzielski
- Stranski-Laboratorium
für Physikalische und Theoretische Chemie, Institut für
Chemie, Technische Universität, Straße des 17, Juni 124, D-10623 Berlin, Germany
| | - Florian A. Jung
- Soft Matter
Physics Group, Physics Department, TUM School of Natural Sciences, Technical University of Munich, James-Franck-Straße 1, 85748 Garching, Germany
| | - Christine M. Papadakis
- Soft Matter
Physics Group, Physics Department, TUM School of Natural Sciences, Technical University of Munich, James-Franck-Straße 1, 85748 Garching, Germany
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Masuda S, Deguchi S, Ogata F, Yoshitomi J, Otake H, Kanai K, Kawasaki N, Nagai N. Nasal Absorption Enhancement of Mometasone Furoate Nanocrystal Dispersions. Int J Nanomedicine 2023; 18:5685-5699. [PMID: 37841023 PMCID: PMC10573391 DOI: 10.2147/ijn.s430952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 10/05/2023] [Indexed: 10/17/2023] Open
Abstract
Purpose We designed a 0.05% mometasone furoate (MF) nanocrystal dispersion and investigated whether the application of MF nanocrystals in nasal formulations enhanced local absorption compared to traditional nasal MF formulations (CA-MF). Methods MF nanocrystal dispersions (MF-NPs) were prepared by bead milling MF microcrystal dispersions (MF-MPs) consisting of MF, 2-hydroxypropyl-β-cyclodextrin, methylcellulose, and purified water. Pluronic F-127 combined with methylcellulose, Pluronic F-68, or carbopol was used as a base for in situ gelation (thickener). MF concentrations were measured using high-performance liquid chromatography, and nasal absorption of MF was evaluated in 6 week-old male Institute of Cancer Research (ICR) mice. Results The particle size range of MF prepared with the bead mill treatment was 80-200 nm, and the nanoparticles increased the local absorption of MF, which was higher than that of CA-MF and MF-MPs. In addition, unlike the results obtained in the small intestine and corneal tissue, the high absorption of nanocrystalline MF in the nasal mucosa was related to a pathway that was not derived from energy-dependent endocytosis. Moreover, the application of the in situ gelling system attenuated the local absorption of MF-NPs, owing to a decrease in drug diffusion in the dispersions. Conclusion We found that nanoparticulation of MF enhances local intranasal absorption, and nasal bioavailability is higher than that of CA-MF. In addition, we demonstrate that viscosity regulation is an important factor in the design of nasal formulations based on MF nanocrystals. These findings provide insights for the design of novel nanomedicines with enhanced nasal bioavailability.
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Affiliation(s)
- Shuya Masuda
- Faculty of Pharmacy, Kindai University, Osaka, Japan
| | - Saori Deguchi
- Faculty of Pharmacy, Kindai University, Osaka, Japan
| | | | | | - Hiroko Otake
- Faculty of Pharmacy, Kindai University, Osaka, Japan
| | - Kazutaka Kanai
- Department of Small Animal Internal Medicine, School of Veterinary Medicine, University of Kitasato, Aomori, Japan
| | | | - Noriaki Nagai
- Faculty of Pharmacy, Kindai University, Osaka, Japan
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Ward CL, Cornejo MA, Peli Thanthri SH, Linz TH. A review of electrophoretic separations in temperature-responsive Pluronic thermal gels. Anal Chim Acta 2023; 1276:341613. [PMID: 37573098 DOI: 10.1016/j.aca.2023.341613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 07/10/2023] [Accepted: 07/11/2023] [Indexed: 08/14/2023]
Abstract
Gel electrophoresis is a ubiquitous bioanalytical technique used in research laboratories to validate protein and nucleic acid samples. Polyacrylamide and agarose have been the gold standard gel materials for decades, but an alternative class of polymer has emerged with potentially superior performance. Pluronic thermal gels are water-soluble polymers that possess the unique ability to undergo a change in viscosity in response to changing temperature. Thermal gels can reversibly convert between low-viscosity liquids and high-viscosity solid gels using temperature as an adjustable parameter. The properties of thermal gels provide unmatched flexibility as a dynamic separations matrix to measure analytes ranging from small molecules to cells. This review article describes the physical and chemical properties of Pluronic thermal gels to provide a fundamental overview of polymer behavior. The performance of thermal gels is then reviewed to highlight their applications as a gel matrix for electrokinetic separations in capillary, microfluidic, and slab gel formats. The use of dynamic temperature-responsive gels in bioanalytical separations is an underexplored area of research but one that holds exciting potential to achieve performance unattainable with conventional static polymers.
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Affiliation(s)
- Cassandra L Ward
- Department of Chemistry, Wayne State University, Detroit, MI, USA; Lumigen Instrument Center, Wayne State University, Detroit, MI, USA.
| | - Mario A Cornejo
- Department of Chemistry, Wayne State University, Detroit, MI, USA
| | | | - Thomas H Linz
- Department of Chemistry, Wayne State University, Detroit, MI, USA.
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White JM, Crabtree AA, Bates FS, Calabrese MA. Effect of chain architecture on the structure, dynamics, and rheology of thermoresponsive poloxamer hydrogels and associated blends. Macromolecules 2023; 56:6834-6847. [PMID: 38774522 PMCID: PMC11104561 DOI: 10.1021/acs.macromol.3c01107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2024]
Abstract
Poloxamers, ABA triblock polymers composed of a poly(propylene oxide) (PPO) midblock (B) and poly(ethylene oxide) (PEO) endblocks (A), are widely studied for biomedical applications. Aqueous poloxamer 407 (P407; also referred to as F127) undergoes a solution-to-gel transition with increasing temperature, driven by the formation and ordering of micelles onto periodic lattices; however, the gel temperature and resulting modulus has limited tunability. Here, reverse P407 (RP407), a BAB polymer of the same composition and molar mass but the inverted architecture, is synthesized via anionic polymerization. The micellization and gelation temperatures of RP407 are higher than that of P407 and the PPO endblocks allow for intermicelle bridging; however, both single-component solutions favor body-centered cubic (BCC) packings. Further, aqueous RP407 displays a "soft gel" region with interesting rheological behavior, including viscoelastic aging and thermal hysteresis. Combining P407 and RP407 yields solutions with intermediate transition temperatures and alters the size and micelle packing. While the single-component solutions produce BCC packings, the blends form close-packed structures and larger micelles of higher aggregation numbers. Blends of P407 with an analogous AB diblock (E111P32) display similar behavior, whereas RP407/diblock blends form intermediate-sized BCC-packed micelles. These differences in packing and aggregation alter the local environments within the gels, which could have implications for applications such as drug delivery and protein stabilization.
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Affiliation(s)
- Joanna M White
- Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Ave. SE, Minneapolis, MN, 55455
| | - Adelyn A Crabtree
- Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Ave. SE, Minneapolis, MN, 55455
| | - Frank S Bates
- Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Ave. SE, Minneapolis, MN, 55455
| | - Michelle A Calabrese
- Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Ave. SE, Minneapolis, MN, 55455
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da Silva JB, Dos Santos RS, Vecchi CF, da Silva Souza Campanholi K, da Silva Junior RC, de Castro Hoshino LV, Caetano W, Baesso ML, Simas FF, Cook MT, Bruschi ML. Boosting the photodynamic activity of erythrosine B by using thermoresponsive and adhesive systems containing cellulose derivatives for topical delivery. Int J Biol Macromol 2023; 245:125491. [PMID: 37353125 DOI: 10.1016/j.ijbiomac.2023.125491] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/08/2023] [Accepted: 06/18/2023] [Indexed: 06/25/2023]
Abstract
Erythrosine displays potential photodynamic activity against microorganisms and unhealthy cells. However, erythrosine has high hydrophilicity, negatively impacting on permeation through biological membranes. Combining biological macromolecules and thermoresponsive polymers may overcome these erythrosine-related issues, enhancing retention of topically applied drugs. The aim of this work was to investigate the performance of adhesive and thermoresponsive micellar polymeric systems, containing erythrosine in neutral (ERI) or disodium salt (ERIs) states. Optimized combinations of poloxamer 407 (polox407) and sodium carboxymethylcellulose (NaCMC) or hydroxypropyl methylcellulose (HPMC) were used as platforms for ERI/ERIs delivery. The rheological and mechanical properties of the systems was explored. Most of the formulations were plastic, thixotropic and viscoelastic at 37 °C, with suitable gelation temperature for in situ gelation. Mechanical parameters were reduced in the presence of the photosensitizer, improving the softness index. Bioadhesion was efficient for all hydrogels, with improved parameters for mucosa in contrast to skin. Formulations composed of 17.5 % polox407 and 3 % HPMC or 1 % NaCMC with 1 % (w/w) ERI/ERIs could release the photosensitizer, reaching different layers of the skin/mucosa, ensuring enough production of cytotoxic species for photodynamic therapy. Functional micelles could boost the photodynamic activity of ERI and ERIs, improving their delivery and contact time with the cells.
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Affiliation(s)
- Jéssica Bassi da Silva
- Laboratory of Research and Development of Drug Delivery Systems, Postgraduate Program in Pharmaceutical Sciences, Department of Pharmacy, State University of Maringa, Maringa, PR, Brazil
| | - Rafaela Said Dos Santos
- Laboratory of Research and Development of Drug Delivery Systems, Postgraduate Program in Pharmaceutical Sciences, Department of Pharmacy, State University of Maringa, Maringa, PR, Brazil
| | - Camila Felix Vecchi
- Laboratory of Research and Development of Drug Delivery Systems, Postgraduate Program in Pharmaceutical Sciences, Department of Pharmacy, State University of Maringa, Maringa, PR, Brazil
| | | | | | | | - Wilker Caetano
- Department of Chemistry, State University of Maringa, Maringa, Brazil
| | | | - Fernanda Fogagnoli Simas
- Laboratory of Inflammatory and Neoplastic Cells, Cell Biology Department, Section of Biological Sciences, Federal University of Parana, Curitiba, Brazil
| | | | - Marcos Luciano Bruschi
- Laboratory of Research and Development of Drug Delivery Systems, Postgraduate Program in Pharmaceutical Sciences, Department of Pharmacy, State University of Maringa, Maringa, PR, Brazil.
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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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Rocha MS, Batista JVC, Melo MNO, de Campos VEB, Toledo ALMM, Oliveira AP, Picciani PHS, Baumgartner S, Holandino C. Pluronic ® F127 Thermoresponsive Viscum album Hydrogel: Physicochemical Features and Cellular In Vitro Evaluation. Pharmaceutics 2022; 14:pharmaceutics14122775. [PMID: 36559269 PMCID: PMC9788499 DOI: 10.3390/pharmaceutics14122775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 12/02/2022] [Accepted: 12/08/2022] [Indexed: 12/14/2022] Open
Abstract
Viscum album L., popularly known as mistletoe, is well known for its anti-cancer properties, and the pharmaceutical application of hydroalcoholic dry extracts is still limited due to its low solubility in aqueous media, and physicochemical instability. The Pluronic® F127 is an amphiphilic polymer, which permits the solubilization of lipophilic and hydrophilic compounds. In this investigation, physicochemical features of hydrogel containing V. album dry extract (VADE-loaded-hydrogel) were performed by: dynamic light scattering (DLS), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and transmission electron microscopy (TEM). VADE-loaded-hydrogel presented nanometer-size micelles with volume distribution ranging from 10.58 nm to 246.7 nm, and a polydispersity index of 0.441. The sample thermal analyses (TG and DSC) showed similar decomposition curves; however, the thermal events indicated an increase in thermal stability in relation to the presence of the extract. In addition to these interesting pharmaceutical features, IC50 values of 333.40 µg/mL and >1000 µg/mL were obtained when tumor (SCC-25) and non-tumor (L929) cells were incubated with VADE-loaded-hydrogel, respectively. The optical and ultrastructural cellular analysis confirmed the tumor selectivity since the following alterations were detected only in SCC-25 cells: disorganization of plasmatic membrane; an increase of cytoplasmatic vacuole size; alteration in the cristae mitochondrial shape; and generation of amorphous cellular material. These results emphasize the promising antitumoral potential of VADE-loaded-hydrogel as an herbal drug delivery system via in vitro assays.
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Affiliation(s)
- Mariana S. Rocha
- Multidisciplinary Laboratory of Pharmaceutical Sciences, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - João V. C. Batista
- Society for Cancer Research, Hiscia Institute, 4144 Arlesheim, Switzerland
- Department of Pharmaceutical Sciences, Division of Pharmaceutical Technology, University of Basel, 4056 Basel, Switzerland
| | - Michelle N. O. Melo
- Multidisciplinary Laboratory of Pharmaceutical Sciences, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Vania E. B. de Campos
- Multidisciplinary Laboratory of Pharmaceutical Sciences, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
- Department of Pharmacy, Universidade do Estado do Rio de Janeiro, Rio de Janeiro 23070-200, Brazil
| | - Anna Lecticia M. M. Toledo
- Institute of Macromolecules Professora Eloisa Mano, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-598, Brazil
| | - Adriana P. Oliveira
- Multidisciplinary Laboratory of Pharmaceutical Sciences, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Paulo H. S. Picciani
- Institute of Macromolecules Professora Eloisa Mano, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-598, Brazil
| | - Stephan Baumgartner
- Society for Cancer Research, Hiscia Institute, 4144 Arlesheim, Switzerland
- Institute of Integrative Medicine, University of Witten/Herdecke, 58455 Witten, Germany
- Institute of Complementary and Integrative Medicine, University of Bern, 3012 Bern, Switzerland
- Correspondence: (S.B.); (C.H.)
| | - Carla Holandino
- Multidisciplinary Laboratory of Pharmaceutical Sciences, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
- Society for Cancer Research, Hiscia Institute, 4144 Arlesheim, Switzerland
- Correspondence: (S.B.); (C.H.)
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Chen IC, Su CY, Chen PY, Hoang TC, Tsou YS, Fang HW. Investigation and Characterization of Factors Affecting Rheological Properties of Poloxamer-Based Thermo-Sensitive Hydrogel. Polymers (Basel) 2022; 14:polym14245353. [PMID: 36559720 PMCID: PMC9781578 DOI: 10.3390/polym14245353] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/01/2022] [Accepted: 12/05/2022] [Indexed: 12/13/2022] Open
Abstract
Poloxamers are negatively temperature-sensitive hydrogels and their hydrophilic groups interact with water molecules at lower temperatures (liquid phase) while their hydrophobic groups interact more strongly with increases in temperature causing gelation. To investigate the factors affecting the rheological properties of poloxamers, various parameters including different poloxamer P407 concentrations, poloxamers P407/P188 blending ratios and additives were examined. The results presented a clear trend of decreasing gelling temperature/time when P407 was at higher concentrations. Moreover, the addition of P188 enhanced the gelling temperature regardless of poloxamer concentration. Polysaccharides and their derivatives have been widely used as components of hydrogel and we found that alginic acid (AA) or carboxymethyl cellulose (CMC) reduced the gelling temperature of poloxamers. In addition, AA-containing poloxamer promoted cell proliferation and both AA -and CMC-containing poloxamer hydrogels reduced cell migration. This study investigated the intriguing characteristics of poloxamer-based hydrogel, providing useful information to compounding an ideal and desired thermo-sensitive hydrogel for further potential clinical applications such as development of sprayable anti-adhesive barrier, wound-healing dressings or injectable drug-delivery system for cartilage repair.
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Affiliation(s)
- I-Cheng Chen
- Accelerator for Happiness and Health Industry, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan
| | - Chen-Ying Su
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan
| | - Pei-Yu Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan
| | - The Chien Hoang
- Biotegy Vietnam Company Limited, No. 23, Alley 48, Tho Lao Street, Dong Mac Ward, Hai Ba Trung District, Hanoi City 11609, Vietnam
| | - Yi-Syue Tsou
- Department of Neurosurgery, Taipei Medical University Hospital, Taipei 110301, Taiwan
- Taipei Neuroscience Institute, Taipei Medical University, Taipei 110301, Taiwan
- The Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University and National Health Research Institutes, Taipei 110301, Taiwan
| | - Hsu-Wei Fang
- Accelerator for Happiness and Health Industry, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, No. 35, Keyan Road, Zhunan Town, Miaoli County 35053, Taiwan
- Correspondence: ; Tel.: +886-2-2771-2171 (ext. 2521)
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SHESHALA R, WAI NZ, SAID ID, ASHRAF K, LIM SM, RAMASAMY K, ZEESHAN F. Poloxamer and Chitosan-Based In Situ Gels Loaded with Orthosiphon stamineus Benth. Extracts Containing Rosmarinic Acid for the Treatment of Ocular Infections. Turk J Pharm Sci 2022; 19:671-680. [PMID: 36544377 PMCID: PMC9780577 DOI: 10.4274/tjps.galenos.2021.40121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Objectives Orthosiphon stamineus Benth. (OS) is a commonly used medicinal plant for curbing bacterial infections globally. This work aimed to fabricate poloxamer and chitosan-based in situ gels loaded with standardized aqueous-ethanolic OS leaf extracts and investigate their antimicrobial efficacy as a potential remedy against ocular infections. Materials and Methods In situ gels containing 0.5% w/v OS extract prepared using cold dispersion method were subjected to physicochemical characterization, including in vitro-release studies. Antimicrobial efficacy was tested against Staphylococcus aureus, Micrococcus luteus, Escherichia coli, and Pseudomonas aeruginosa using agar diffusion method. Results Thin layer chromatography and high performance liquid chromatography chromatograms confirmed the presence of rosmarinic acid (RA) and sinensitin in OS extracts with same retention factor (0.26 and 0.49) and retention times (12.2 and 20.7 min) against reference standards. A homogenous brown coloured in situ gel exhibited low viscosity as a solution and increased viscosity in gel form at ocular temperature. The optimized formulations, P7 (21% P407/4% P188), P8 (21% P407/5% P188) and F5 (1.5% chitosan and 45% β-glycerophosphate) exhibited ideal ocular pH (7.27-7.46), phase transition at ocular temperature (33-37°C) and prolonged RA release up to 12 h. Formulation F5 showed an inhibition zone of 4.3 mm against M. luteus. Conclusion Among all, formulation F5 alone exhibited modest antimicrobial activity against M. luteus. OS extracts at 5% and 10% were most active against tested bacteria however, loading them into in situ gels resulted in sedimentation. Hence, isolation of RA from OS extract is suggested before loading into formulations for a better antimicrobial activity.
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Affiliation(s)
- Ravi SHESHALA
- Universiti Teknologi MARA, Faculty of Pharmacy, Department of Pharmaceutics, Selangor, Malaysia
| | - Ng Zing WAI
- International Medical University, School of Pharmacy, Department of Pharmaceutical Technology, Kuala Lumpur, Malaysia
| | - Iqbal Danial SAID
- International Medical University, School of Pharmacy, Department of Pharmaceutical Technology, Kuala Lumpur, Malaysia
| | - Kamran ASHRAF
- Universiti Teknologi MARA, Faculty of Pharmacy, Department of Pharmacology and Pharmaceutical Chemistry, Selangor, Malaysia
| | - Siong Meng LIM
- Universiti Teknologi MARA, Faculty of Pharmacy, Department of Pharmacology and Pharmaceutical Chemistry, Selangor, Malaysia
| | - Kalavathy RAMASAMY
- Universiti Teknologi MARA, Faculty of Pharmacy, Department of Pharmaceutical Life Sciences, Selangor, Malaysia
| | - Farrukh ZEESHAN
- International Medical University, School of Pharmacy, Department of Pharmaceutical Technology, Kuala Lumpur, Malaysia,* Address for Correspondence: Phone: +0060178455295 E-mail:
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Non-Ionic Surfactant Effects on Innate Pluronic 188 Behavior: Interactions, and Physicochemical and Biocompatibility Studies. Int J Mol Sci 2022; 23:ijms232213814. [PMID: 36430294 PMCID: PMC9697813 DOI: 10.3390/ijms232213814] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/07/2022] [Accepted: 11/08/2022] [Indexed: 11/11/2022] Open
Abstract
The aim of this research was to prepare novel block copolymer-surfactant hybrid nanosystems using the triblock copolymer Pluronic 188, along with surfactants of different hydrophilic to lipophilic balance (HLB ratio-which indicates the degree to which a surfactant is hydrophilic or hydrophobic) and thermotropic behavior. The surfactants used were of non-ionic nature, of which Tween 80® and Brij 58® were more hydrophilic, while Span 40® and Span 60® were more hydrophobic. Each surfactant has unique innate thermal properties and an affinity towards Pluronic 188. The nanosystems were formulated through mixing the pluronic with the surfactants at three different ratios, namely 90:10, 80:20, and 50:50, using the thin-film hydration technique and keeping the pluronic concentration constant. The physicochemical characteristics of the prepared nanosystems were evaluated using various light scattering techniques, while their thermotropic behavior was characterized via microDSC and high-resolution ultrasound spectroscopy. Microenvironmental parameters were attained through the use of fluorescence spectroscopy, while the cytotoxicity of the nanocarriers was studied in vitro. The results indicate that the combination of Pluronic 188 with the above surfactants was able to produce hybrid homogeneous nanoparticle populations of adequately small diameters. The different surfactants had a clear effect on physicochemical parameters such as the size, hydrodynamic diameter, and polydispersity index of the final formulation. The mixing of surfactants with the pluronic clearly changed its thermotropic behavior and thermal transition temperature (Tm) and highlighted the specific interactions that occurred between the different materials, as well as the effect of increasing the surfactant concentration on inherent polymer characteristics and behavior. The formulated nanosystems were found to be mostly of minimal toxicity. The obtained results demonstrate that the thin-film hydration method can be used for the formulation of pluronic-surfactant hybrid nanoparticles, which in turn exhibit favorable characteristics in terms of their possible use in drug delivery applications. This investigation can be used as a road map for the selection of an appropriate nanosystem as a novel vehicle for drug delivery.
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Hirun N, Kraisit P, Tantishaiyakul V. Thermosensitive Polymer Blend Composed of Poloxamer 407, Poloxamer 188 and Polycarbophil for the Use as Mucoadhesive In Situ Gel. Polymers (Basel) 2022; 14:polym14091836. [PMID: 35567002 PMCID: PMC9102451 DOI: 10.3390/polym14091836] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 04/22/2022] [Accepted: 04/26/2022] [Indexed: 02/04/2023] Open
Abstract
Herein, thermosensitive blends of poloxamer 407 (P407)/poloxamer 188 (P188)/polycarbophil (PCB) were developed in terms of maximized content of PCB (a mucoadhesive polymer) and desired temperature-dependent rheological properties of the blends as in situ gelling matrices. Maximizing PCB content while achieving the preferable rheological characteristics was accomplished through the Box–Behnken design. The quantitative effect of the polymer composition in the blends on the thermosensitive characteristics was evaluated using the fitted design model and the corresponding surface plots. The optimized P407/P188/PCB blend (OPT) was the mixture of 20.000, 7.349 and 0.595% (w/w) of P407, P188, and PCB, respectively. The thermosensitive micellization of OPT was investigated using differential scanning calorimetry which revealed an overlapping double endothermic peak caused by the temperature-induced micellization of pure micelles in co-existence with the micelles with attached PCB. Mixing PCB with the P407/P188 matrix promoted a more intense mucoadhesion of the blend. After incorporating metronidazole, a model hydrophilic drug, into OPT, the temperature-dependent characteristics of the hydrogel did not change. Metronidazole release from OPT was sustained by an anomalous mechanism. This optimal ternary hydrogel benefiting from thermosensitive gelling and mucoadhesive matrix might be used as a viable platform for mucoadhesive in situ gelling drug delivery.
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Affiliation(s)
- Namon Hirun
- Thammasat University Research Unit in Smart Materials and Innovative Technology for Pharmaceutical Applications (SMIT-Pharm), Faculty of Pharmacy, Thammasat University, Pathumthani 12120, Thailand;
- Correspondence:
| | - Pakorn Kraisit
- Thammasat University Research Unit in Smart Materials and Innovative Technology for Pharmaceutical Applications (SMIT-Pharm), Faculty of Pharmacy, Thammasat University, Pathumthani 12120, Thailand;
| | - Vimon Tantishaiyakul
- Center of Excellence for Drug Delivery System, Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat-Yai 90112, Thailand;
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Jin G, Ngo HV, Wang J, Cui JH, Cao QR, Park C, Jung M, Lee BJ. Design and evaluation of in vivo bioavailability in beagle dogs of bilayer tablet consisting of immediate release nanosuspension and sustained release layers of rebamipide. Int J Pharm 2022; 619:121718. [PMID: 35381311 DOI: 10.1016/j.ijpharm.2022.121718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 03/29/2022] [Accepted: 03/31/2022] [Indexed: 10/18/2022]
Abstract
The purpose of this study was to develop a once-daily, bilayer matrix tablet with immediate (IR) and sustained release (SR) layers of poorly water-soluble and absorption site dependent rebamipide (RBM) to substitute three times a day IR tablet. Owing to the pH-dependent poor water solubility of RBM in low pH condition, salt-caged nanosuspensions (NSPs) consisting of RBM and poloxamer 407 (POX 407) or poloxamer 188 (POX 188) were prepared using an acid-base neutralization method to increase the dissolution rate, which was subsequently applied to the immediate-release (IR) layer. Polyethylene oxide (PEO) with different molecular weights (PEO 100,000 and PEO 5,000,000) and hydroxypropyl methylcellulose 4000 (HPMC 4000) were then investigated as SR agents to incorporate into the SR layer with pure RBM via wet granulation method. The dissolution profile of the optimized bilayer tablet having 50% IR and 50% SR layer of 300 mg RBM showed that the IR layer could rapidly disintegrate in pH 1.2 buffer solution within 2 h, reaching 50% of drug release from the tablet, followed by an extended drug release from the SR layer in pH 6.8 buffer over 24 h. An in vivo pharmacokinetic study was carried out in beagle dogs to compare the optimal formulation (300 mg RBM bilayer tablet) and the commercial tablet (Mucosta® 100 mg) as a reference. Unexpectedly, despite enhanced dissolution rate in a controlled manner, a designed bilayer tablet had no dose- and dosage form dependent in vivo bioavailability in beagle dogs as compared with IR 100 mg RBM reference tablet. It was evident that solubility in low pH condition, gastric residence time and absorption site of RBM should be carefully considered for designing specific SR or gastroretentive dosage form to improve therapeutic outcomes.
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Affiliation(s)
- Gang Jin
- College of Pharmacy, Ajou University, Suwon 16499, Republic of Korea; School of Chemical and Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin 132022, PR China.
| | - Hai V Ngo
- College of Pharmacy, Ajou University, Suwon 16499, Republic of Korea.
| | - Jie Wang
- Student Affairs Department, Jilin Institute of Chemical Technology, Jilin 132022, PR China.
| | - Jing-Hao Cui
- College of Pharmaceutical Science, Soochow University, Suzhou 215123, PR China.
| | - Qing-Ri Cao
- College of Pharmaceutical Science, Soochow University, Suzhou 215123, PR China.
| | - Chulhun Park
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta T6G 2H7, Canada.
| | - Minji Jung
- College of Pharmacy, Ajou University, Suwon 16499, Republic of Korea; School of Pharmacy, University of California, San Francisco, CA, United States.
| | - Beom-Jin Lee
- College of Pharmacy, Ajou University, Suwon 16499, Republic of Korea; Institute of Pharmaceutical Science and Technology, Ajou University, Suwon 16499, Republic of Korea.
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14
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Piao Z, Park JK, Park SJ, Jeong B. Hypothermic Stem Cell Storage Using a Polypeptide Thermogel. Biomacromolecules 2021; 22:5390-5399. [PMID: 34855378 DOI: 10.1021/acs.biomac.1c01472] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report a polypeptide-based thermogel as a new tool for hypothermic storage of stem cells at ambient temperature (25 °C). Stem cells were suspended in the sol state (10 °C) of an aqueous poly(ethylene glycol)-poly(l-alanine) (PEG-PA) solution (4.0 wt %) in phosphate-buffered saline (PBS), which turned into a stem cell-incorporated gel by a heat-induced sol-to-gel transition. The cell harvesting procedure from the thermogels was simply performed through a gel-to-sol transition by diluting and cooling the system. More than 99% of stem cells died in PBS and Pluronic F127 thermogel (control thermogel) when the cells were stored at 25 °C for 7 days. The cell recovery rate from the PEG-PA thermogel (64%) was significantly greater than that from the commercially available HypoThermosol FRS preservation solution (HTS) (26%). Additionally, the surviving stem cells from the PEG-PA thermogel were healthier than those from HTS in terms of (1) expression of stemness biomarkers (NANOG, OCT4, and SOX2), (2) proliferation rate, and (3) differentiation potentials into osteogenic, chondrogenic, and adipogenic lineages. Membrane stabilization was suggested as a cell protection mechanism in the cytocompatible PEG-PA thermogel. The PEG-PA thermogel provides a convenient cytocompatible way for the storage and recovery of cells and thus is a promising tool for the transportation and short-term banking of cells.
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Affiliation(s)
- Zhengyu Piao
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
| | - Jin Kyung Park
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
| | - So-Jung Park
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
| | - Byeongmoon Jeong
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
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Patel D, Patel D, Ray D, Kuperkar K, Aswal VK, Bahadur P. Single and mixed Pluronics® micelles with solubilized hydrophobic additives: Underscoring the aqueous solution demeanor and micellar transition. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117625] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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16
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Polat H, Eren MC, Polat M. The effect of protein BSA on the stability of lipophilic drug (docetaxel)-loaded polymeric micelles. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127712] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Bassi da Silva J, da Silva Souza Campanholi K, Braga G, de Souza PR, Caetano W, Cook MT, Bruschi ML. The effect of erythrosine-B on the structuration of poloxamer 407 and cellulose derivative blends: In silico modelling supporting experimental studies. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 130:112440. [PMID: 34702525 DOI: 10.1016/j.msec.2021.112440] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 09/06/2021] [Accepted: 09/14/2021] [Indexed: 11/26/2022]
Abstract
Erythrosine is a dye approved for medical use that has shown promising photodynamic activity, allowing for the inactivation of microorganisms and activity against malignant cells. Despite the great photodynamic potential, erythrosine exhibits hydrophilicity, negatively impacting its action in biological membranes. Therefore, the incorporation of erythrosine in micellar polymeric systems, such as poloxamers, may overcome this limitation. Moreover, using bioadhesive and thermoresponsive polymers to combine in situ gelation and bioadhesion may enhance retention of this topically applied drug. In this work, mucoadhesive and thermoresponsive micellar systems were prepared containing erythrosine in two states: the native form (ERI) and the disodium salt (ERIs). The systems were evaluated based on the effect of ERI/ERIs on the micellar structure of the binary polymer mixtures. Optimised combinations of poloxamer 407 (polox407) and mucoadhesive sodium carboxymethylcellulose (NaCMC) or hydroxypropyl methylcellulose (HPMC) were used as micellar systems for ERI or ERIs delivery. The systems were studied with respect to theoretical interactions, qualitative composition, morphology, and micellar properties. In silico modelling indicated a higher interaction of the drug with poly(ethylene oxide) (PEO) than poly(propylene oxide) (PPO) fragments of polox407. Systems containing NaCMC displayed a repulsive effect in the presence of erythrosine, due to the polymer's charge density. Both systems could convert the photosensitizer in its monomeric form, ensuring photodynamic activity. In these mixtures, crystallinity, critical micellar temperature and enthalpy of polox407 micellisation were reduced, and micellar size, evaluated by transmission electron microscopy (TEM), showed low impact of ERI/ERIs in HPMC preparations. Aiming toward photodynamic applications, the findings showed how ERI or ERIs can affect the micellar formation of gels composed of 17.5% (w/w) polox407 and 3% (w/w) HPMC or 1% (w/w) NaCMC, important for understating their behaviour and future utilisation as erythrosine delivery systems.
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Affiliation(s)
- Jéssica Bassi da Silva
- Postgraduate Program in Pharmaceutical Sciences, Laboratory of Research and Development of Drug Delivery Systems, Department of Pharmacy, State University of Maringa, Maringa, PR, Brazil
| | | | - Gustavo Braga
- Department of Chemistry, State University of Maringa, Maringa, PR, Brazil
| | | | - Wilker Caetano
- Department of Chemistry, State University of Maringa, Maringa, PR, Brazil
| | - Michael Thomas Cook
- Research Centre in Topical Drug Delivery and Toxicology, Department of Pharmacy, Pharmacology, and Postgraduate Medicine, University of Hertfordshire, Hatfield AL10 9AB, United Kingdom
| | - Marcos Luciano Bruschi
- Postgraduate Program in Pharmaceutical Sciences, Laboratory of Research and Development of Drug Delivery Systems, Department of Pharmacy, State University of Maringa, Maringa, PR, Brazil.
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18
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Balance of Drug Residence and Diffusion in Lacrimal Fluid Determine Ocular Bioavailability in In Situ Gels Incorporating Tranilast Nanoparticles. Pharmaceutics 2021; 13:pharmaceutics13091425. [PMID: 34575501 PMCID: PMC8466670 DOI: 10.3390/pharmaceutics13091425] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/03/2021] [Accepted: 09/07/2021] [Indexed: 11/16/2022] Open
Abstract
We previously designed ophthalmic formulations (nTRA) containing tranilast nanoparticles (Tra-NPs) with high uptake into ocular tissues. In this study, we used in situ gel (ISG) bases comprising combinations of pluronic F127 (F127) and methylcellulose (MC/F127), pluronic F68 (F68/F127), and Carbopol (Car/F127), and we developed in situ gels incorporating Tra-NPs (Tra-NP-incorporated ISNGs) such as nTRA-F127, nTRA-MC/F127, nTRA-F68/F127, and nTRA-Car/F127. Moreover, we demonstrated the therapeutic effect on conjunctival inflammation using lipopolysaccharide-induced rats. Each Tra-NP-incorporated ISNG was prepared by the bead mill method, the particle size was 40–190 nm, and the tranilast release and diffusion from formulation were nTRA > nTRA-F127 > nTRA-F68/F127 > nTRA-Car/F127 > nTRA-MC/F127. In the Tra-NP-incorporated ISNGs, the tranilast residence time in the lacrimal fluid, cornea, and conjunctiva was prolonged, although the Cmax was attenuated in comparison with nTRA. On the other hand, no significant difference in conjunctival inflammation between non- and nTRA-F127-instilled rats was found; however, the nTRA-F68/F127, nTRA-Car/F127, and nTRA-MC/F127 (combination-ISG) attenuated the vessel leakage, nitric oxide, and tumor necrosis factor-α expression. In particular, nTRA-F68/F127 was significant in preventing the conjunctival inflammation. In conclusion, we found that the combination-ISG base prolonged the residence time of Tra-NPs; however, Tra-NP release from the formulation was attenuated, and the Tmax was delayed longer than that in nTRA. The balance of drug residence and diffusion in lacrimal fluid may be important in providing high ocular bioavailability in formulations containing solid nanoparticles.
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Sendon-Lago J, Rio LGD, Eiro N, Diaz-Rodriguez P, Avila L, Gonzalez LO, Vizoso FJ, Perez-Fernandez R, Landin M. Tailored Hydrogels as Delivery Platforms for Conditioned Medium from Mesenchymal Stem Cells in a Model of Acute Colitis in Mice. Pharmaceutics 2021; 13:pharmaceutics13081127. [PMID: 34452089 PMCID: PMC8400526 DOI: 10.3390/pharmaceutics13081127] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/15/2021] [Accepted: 07/20/2021] [Indexed: 12/20/2022] Open
Abstract
Inflammatory bowel disease (IBD), including Crohn’s disease (CD) and ulcerative colitis (UC), is increasingly prevalent and current therapies are not completely effective. Mesenchymal stem cells are emerging as a promising therapeutic option. Here, the effect of local hydrogel application loaded with conditioned medium (CM) from human uterine cervical stem cells (hUCESC-CM) in an experimental acute colitis mice model has been evaluated. Colitis induction was carried out in C57BL/6 mice by dissolving dextran sulfate sodium (DSS) in drinking water for nine days. Ulcers were treated by rectal administration of either mesalazine (as positive control) or a mucoadhesive and thermosensitive hydrogel loaded with hUCESC-CM (H-hUCESC-CM). Body weight changes, colon length, and histopathological analysis were evaluated. In addition, pro-inflammatory TNF-α, IL-6, and IFN-γ mRNA levels were measured by qPCR. Treatment with H-hUCESC-CM inhibited body weight loss and colon shortening and induced a significant decrease in colon mucosa degeneration, as well as TNF-α, IFN-γ, and IL-6 mRNA levels. Results indicate that H-hUCESC-CM effectively alleviated DSS-induced colitis in mice, suggesting that H-hUCESC-CM may represent an attractive cell-free therapy for local treatment of IBD.
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Affiliation(s)
- Juan Sendon-Lago
- Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), Department of Physiology, Universidade de Santiago de Compostela, Avda. de Barcelona 22, 15706 Santiago de Compostela, Spain; (J.S.-L.); (L.A.)
| | - Lorena Garcia-del Rio
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (L.G.-d.R.); (P.D.-R.)
| | - Noemi Eiro
- Research Unit, Hospital Fundación de Jove, Avda. Eduardo de Castro 161, 33290 Gijón, Spain; (N.E.); (L.O.G.)
| | - Patricia Diaz-Rodriguez
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (L.G.-d.R.); (P.D.-R.)
| | - Leandro Avila
- Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), Department of Physiology, Universidade de Santiago de Compostela, Avda. de Barcelona 22, 15706 Santiago de Compostela, Spain; (J.S.-L.); (L.A.)
| | - Luis O. Gonzalez
- Research Unit, Hospital Fundación de Jove, Avda. Eduardo de Castro 161, 33290 Gijón, Spain; (N.E.); (L.O.G.)
| | - Francisco J. Vizoso
- Research Unit, Hospital Fundación de Jove, Avda. Eduardo de Castro 161, 33290 Gijón, Spain; (N.E.); (L.O.G.)
- Correspondence: (F.J.V.); (R.P.-F.); (M.L.)
| | - Roman Perez-Fernandez
- Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), Department of Physiology, Universidade de Santiago de Compostela, Avda. de Barcelona 22, 15706 Santiago de Compostela, Spain; (J.S.-L.); (L.A.)
- Correspondence: (F.J.V.); (R.P.-F.); (M.L.)
| | - Mariana Landin
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (L.G.-d.R.); (P.D.-R.)
- Correspondence: (F.J.V.); (R.P.-F.); (M.L.)
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20
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Li T, Lalla RV, Burgess DJ. Enhanced drug loading of in situ forming gels for oral mucositis pain control. Int J Pharm 2021; 595:120225. [PMID: 33486019 DOI: 10.1016/j.ijpharm.2021.120225] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 12/28/2020] [Accepted: 12/31/2020] [Indexed: 12/17/2022]
Abstract
Localized delivery to oral mucositis ulcerations requires specialized dosage forms, (e.g. in situ forming gels) delivered to the site in relatively low volumes. However, this is challenging for drugs with low solubility such as Bupivacaine γ-Linoleate (Bup-γL). The objective of this study is to develop an in situ forming gel with enhanced loading of Bup-γL for oral mucositis pain control. Two co-solvents (PEG400 and ethanol) and eight solubilizers (Tween 80, sodium lauryl sulfate, Cremophor® RH40, Cremophor® EL, Kolliphor® HS 15, Soluplus®, PEG 3350 and PEG8000) were screened for their capability to solubilize Bup-γL. Among all tested solubilizers, sodium lauryl sulfate (SLS) showed the highest solubilizing capacity (8.83 ± 0.94 mg/mL). This was considered to be a consequence of the similarity between the structure of SLS and Bup-γL. On the addition of SLS to the in situ forming gels, the drug loading was enhanced from ~6.5 to ~10.5 mg/ml. The formulations were characterized for their gelation temperature, rheological properties, in vitro drug release and short-term storage stability. The gelation temperatures of the in situ forming gel formulations were significantly reduced with enhanced drug loading. The in vitro drug release profiles showed good fit to both the first order and the Higuchi models. Formulations with SLS demonstrated sustained drug release (time to plateau ~7 h) compared with formulations without SLS (time to plateau ~3.5 h). This study offers an effective strategy to enhance drug loading of in situ forming gels. The enhanced drug loading will reduce the dosing volume and as such is expected to reduce any unwanted numbing of the healthy mucosa.
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Affiliation(s)
- Tingting Li
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269, United States
| | - Rajesh V Lalla
- Section of Oral Medicine, University of Connecticut Health Center, Farmington, CT 06030, United States
| | - Diane J Burgess
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269, United States.
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Peira E, Chindamo G, Chirio D, Sapino S, Oliaro-Bosso S, Rebba E, Ivanchenko P, Gallarate M. Assessment of In-Situ Gelling Microemulsion Systems upon Temperature and Dilution Condition for Corneal Delivery of Bevacizumab. Pharmaceutics 2021; 13:258. [PMID: 33668475 PMCID: PMC7918509 DOI: 10.3390/pharmaceutics13020258] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 02/04/2021] [Accepted: 02/10/2021] [Indexed: 01/29/2023] Open
Abstract
Bevacizumab (BVZ), a recombinant humanized monoclonal antibody, has recently been proposed as a topical application in the treatment of anterior segment neovascularization; however, as there are some disadvantages in the administration of common eye-drops, ophthalmic topical drug delivery systems are under study to improve the precorneal residence time, reducing the frequency of administration. In this work, oil-in-water and water-in-oil BVZ-loaded microemulsions are developed, able to increase their viscosity, either by the formation of a liquid-crystalline structure upon aqueous dilution, thanks to the presence of Epikuron® 200 and polysorbate 80, or by body-temperature-induced jellification for the presence of Pluronic® F127 aqueous solution as an external phase. In oil-in-water microemulsion, hydrophobic ion pairs of BVZ were also prepared, and their incorporation was determined by release studies. Microemulsions were characterized for rheological behavior, corneal opacity, in vitro corneal permeation, and adhesion properties. The studied microemulsions were able to incorporate BVZ (from 1.25 to 1.6 mg/mL), which maintained dose-dependent activity on retinal pigment epithelial ARPE-19 cell lines. BVZ loaded in microemulsions permeated the excised cornea easier (0.76-1.56% BVZ diffused, 4-20% BVZ accumulated) than BVZ commercial solution (0.4% BVZ diffused, 5% accumulated) and only a mild irritation effect on the excised cornea was observed. The good adhesion properties as well the increased viscosity after application, under conditions that mimic the corneal environment (from 1 × 103 to more than 100 × 103 mPa·s), might prolong precorneal residence time, proving these systems could be excellent topical BVZ release systems.
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Affiliation(s)
- Elena Peira
- Department of Drug Science and Technology, University of Turin, 10125 Turin, Italy; (G.C.); (S.S.); (S.O.-B.); (M.G.)
| | - Giulia Chindamo
- Department of Drug Science and Technology, University of Turin, 10125 Turin, Italy; (G.C.); (S.S.); (S.O.-B.); (M.G.)
| | - Daniela Chirio
- Department of Drug Science and Technology, University of Turin, 10125 Turin, Italy; (G.C.); (S.S.); (S.O.-B.); (M.G.)
| | - Simona Sapino
- Department of Drug Science and Technology, University of Turin, 10125 Turin, Italy; (G.C.); (S.S.); (S.O.-B.); (M.G.)
| | - Simonetta Oliaro-Bosso
- Department of Drug Science and Technology, University of Turin, 10125 Turin, Italy; (G.C.); (S.S.); (S.O.-B.); (M.G.)
| | - Erica Rebba
- Department of Chemistry and Interdepartmental Nanostructured Interfaces and Surfaces (NIS) Centre, University of Turin, 10125 Turin, Italy; (E.R.); (P.I.)
| | - Pavlo Ivanchenko
- Department of Chemistry and Interdepartmental Nanostructured Interfaces and Surfaces (NIS) Centre, University of Turin, 10125 Turin, Italy; (E.R.); (P.I.)
| | - Marina Gallarate
- Department of Drug Science and Technology, University of Turin, 10125 Turin, Italy; (G.C.); (S.S.); (S.O.-B.); (M.G.)
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Higazy IM, Mahmoud AA, Ghorab MM, Ammar HO. Development and evaluation of polyvinyl alcohol stabilized polylactide-co-caprolactone-based nanoparticles for brain delivery. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2020.102274] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Tipa C, Cidade MT, Vieira T, Silva JC, Soares PIP, Borges JP. A New Long-Term Composite Drug Delivery System Based on Thermo-Responsive Hydrogel and Nanoclay. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 11:E25. [PMID: 33374282 PMCID: PMC7824189 DOI: 10.3390/nano11010025] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 12/17/2020] [Accepted: 12/22/2020] [Indexed: 05/08/2023]
Abstract
Several problems and limitations faced in the treatment of many diseases can be overcome by using controlled drug delivery systems (DDS), where the active compound is transported to the target site, minimizing undesirable side effects. In situ-forming hydrogels that can be injected as viscous liquids and jellify under physiological conditions and biocompatible clay nanoparticles have been used in DDS development. In this work, polymer-clay composites based on Pluronics (F127 and F68) and nanoclays were developed, aiming at a biocompatible and injectable system for long-term controlled delivery of methylene blue (MB) as a model drug. MB release from the systems produced was carried out at 37 °C in a pH 7.4 medium. The Pluronic formulation selected (F127/F68 18/2 wt.%) displayed a sol/gel transition at approx. 30 °C, needing a 2.5 N force to be injected at 25 °C. The addition of 2 wt.% of Na116 clay decreased the sol/gel transition to 28 °C and significantly enhanced its viscoelastic modulus. The most suitable DDS for long-term application was the Na116-MB hybrid from which, after 15 days, only 3% of the encapsulated MB was released. The system developed in this work proved to be injectable, with a long-term drug delivery profile up to 45 days.
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Affiliation(s)
- Cezar Tipa
- CENIMAT/I3N, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal;
| | - Maria T. Cidade
- CENIMAT/I3N, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal;
| | - Tânia Vieira
- CENIMAT/I3N, Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (T.V.); (J.C.S.)
| | - Jorge Carvalho Silva
- CENIMAT/I3N, Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (T.V.); (J.C.S.)
| | - Paula I. P. Soares
- CENIMAT/I3N, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal;
| | - João Paulo Borges
- CENIMAT/I3N, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal;
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Nasr M, Hashem F, Abdelmoniem R, Tantawy N, Teiama M. In Vitro Cytotoxicity and Cellular Uptake of Tamoxifen Citrate-Loaded Polymeric Micelles. AAPS PharmSciTech 2020; 21:306. [PMID: 33151433 DOI: 10.1208/s12249-020-01850-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 10/12/2020] [Indexed: 11/30/2022] Open
Abstract
The main intent of this treatise was to encapsulate tamoxifen citrate (TMXC) into polymeric micellar delivery system and evaluate the influence of TMXC-loaded micelles as a promising carrier on the in vitro cytotoxicity and cellular uptake of TMXC in treatment of breast cancer. Different formulae of polymeric micelles loaded with TMXC using mixtures of different Pluronic polymers were fabricated by thin-film hydration method and evaluated for morphology, drug entrapment efficiency, particle size, surface charge, in vitro liberation of TMXC, uptake by cancer cell lines, and cytotoxic effect against breast cancer cell lines such as MCF-7. The optimal TMXC-loaded micelles exhibited nano-sized particles and entrapped about 89.09 ± 4.2% of TMXC. In vitro liberation study revealed an extended TMXC escape of about 70.23 ± 5.9% over a period of 36 h. The optimized TMXC-loaded micelles formula showed enhanced cellular uptake of TMXC by 2.28 folds and showed a significant cytotoxic effect with MCF-7 breast cancer cells compared to TMXC solution. The obtained yield proposed that Pluronic micelles could be a promising potential delivery system for anticancer moieties.
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da Silva JB, Dos Santos RS, da Silva MB, Braga G, Cook MT, Bruschi ML. Interaction between mucoadhesive cellulose derivatives and Pluronic F127: Investigation on the micelle structure and mucoadhesive performance. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 119:111643. [PMID: 33321681 DOI: 10.1016/j.msec.2020.111643] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 09/15/2020] [Accepted: 10/15/2020] [Indexed: 01/10/2023]
Abstract
Systems composed of bioadhesive and thermoresponsive polymers can combine in situ gelation with bio/mucoadhesion, enhancing retention of topically applied drugs. The effect of bioadhesive sodium carboxymethylcellulose (NaCMC) and hydroxypropyl methylcellulose cellulose (HPMC) on the properties of thermoresponsive Pluronic® F127 (F127) was explored, including micellization and the mucoadhesion. A computational analysis between these polymers and their molecular interactions were also studied, rationalising the design of improved binary polymeric systems for pharmaceutical and biomedical applications. The morphological characterization of polymeric systems was conducted by SEM. DSC analysis was used to investigate the crystallization and micellization enthalpy of F127 and the mixed systems. Micelle size measurements and TEM micrographs allowed for investigation into the interference of cellulose derivatives on F127 micellization. Both cellulose derivatives reduced the critical micellar concentration and enthalpy of micellization of F127, altering hydrodynamic diameters of the aggregates. Mucoadhesion performance was useful to select the best systems for mucosal application. The systems composed of 17.5% (w/w) F127 and 3% (w/w) HPMC or 1% (w/w) NaCMC are promising as topical drug delivery systems, mainly on mucosal surfaces. They were biocompatible when tested against Artemia salina, and also able to release a model of hydrophilic drug in a controlled manner.
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Affiliation(s)
- Jéssica Bassi da Silva
- Postgraduate Program in Pharmaceutical Sciences, Laboratory of Research and Development of Drug Delivery Systems, Department of Pharmacy, State University of Maringa, Maringa, PR, Brazil
| | - Rafaela Said Dos Santos
- Postgraduate Program in Pharmaceutical Sciences, Laboratory of Research and Development of Drug Delivery Systems, Department of Pharmacy, State University of Maringa, Maringa, PR, Brazil
| | | | - Gustavo Braga
- Department of Chemistry, State University of Maringa, Maringa, Brazil
| | - Michael Thomas Cook
- Research Centre in Topical Drug Delivery and Toxicology, School of Life and Medical Sciences, University of Hertfordshire, Hatfield AL10 9AB, United Kingdom
| | - Marcos Luciano Bruschi
- Postgraduate Program in Pharmaceutical Sciences, Laboratory of Research and Development of Drug Delivery Systems, Department of Pharmacy, State University of Maringa, Maringa, PR, Brazil.
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Nitric Oxide-Releasing Thermoresponsive Pluronic F127/Alginate Hydrogel for Enhanced Antibacterial Activity and Accelerated Healing of Infected Wounds. Pharmaceutics 2020; 12:pharmaceutics12100926. [PMID: 32998349 PMCID: PMC7600256 DOI: 10.3390/pharmaceutics12100926] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/10/2020] [Accepted: 09/21/2020] [Indexed: 01/24/2023] Open
Abstract
Nitric oxide (NO), a highly reactive and lipophilic molecule, is one of the molecules present in the wound environment and implicated as an important regulator in all phases of wound healing. Here, we developed an NO-releasing thermoresponsive hydrogel (GSNO-PL/AL) composed of S-nitrosoglutathione (GSNO), pluronic F127 (PL), and alginate (AL) for the treatment of infected wounds. The GSNO was incorporated into the thermoresponsive PL/AL hydrogel, and differential scanning calorimetry techniques were used for the hydrogel characterization. The hydrogel was assessed by in vitro NO release, antibacterial activity, cytotoxicity, and wound-healing activity. The GSNO-PL/AL hydrogel demonstrated thermal responsiveness and biocompatibility, and it showed sustained NO release for 7 days. It also exhibited potent bactericidal activity against Gram-positive methicillin-resistant Staphylococcus aureus and Gram-negative multidrug-resistant Pseudomonas aeruginosa (MRPA). Moreover, the GSNO-PL/AL treatment of MRPA-infected wounds accelerated healing with a reduced bacterial burden in the wounds. The GSNO-PL/AL hydrogel would be a promising option for the treatment of infected wounds.
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Shriky B, Kelly A, Isreb M, Babenko M, Mahmoudi N, Rogers S, Shebanova O, Snow T, Gough T. Pluronic F127 thermosensitive injectable smart hydrogels for controlled drug delivery system development. J Colloid Interface Sci 2020; 565:119-130. [DOI: 10.1016/j.jcis.2019.12.096] [Citation(s) in RCA: 82] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 12/20/2019] [Accepted: 12/21/2019] [Indexed: 01/16/2023]
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Structural characterization using SAXS and rheological behaviors of pluronic F127 and methylcellulose blends. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-020-03154-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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29
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Comparison of thermosensitive in situ gels and drug-resin complex for ocular drug delivery: In vitro drug release and in vivo tissue distribution. Int J Pharm 2020; 578:119184. [PMID: 32112932 DOI: 10.1016/j.ijpharm.2020.119184] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 02/07/2020] [Accepted: 02/25/2020] [Indexed: 12/13/2022]
Abstract
Conventional ophthalmic eye drops are limited by their rapid elimination rate and short time of action. Ion exchange resin has been used to achieve sustained ocular drug delivery but the high selectivity of drug molecules restricts its broad application. In situ gel system seems to be a good strategy to address these problems but the influence of in situ gel type on the sustained release behavior and tissue distribution after ocular application is unclear. Therefore, in this study, using betaxolol hydrochloride as a model drug, poloxamer 407 and methylcellulose as the carriers, two thermosensitive in situ gel systems were prepared and characterized. Influence of formulation composition type and concentration on in vitro drug release was studied. Tissue distribution after ocular delivery of two different thermosensitive in situ gels was studied and compared with commercial BH eye drop (Betoptic S®). In vitro studies demonstrated that addition of 4% HPMC 606W in 15% P407 solution and 5% PEG4000 in 2% MC solution obtained gels with appropriate gelation temperature and similar sustained drug release rate. In vivo tissue distribution study indicated that they presented similar drug concentration in cornea, iris-ciliary and aqueous humor irrespective of gel type, with higher drug concentration achieved after 4 h compared to the commercial resin suspension eye drops. The AUC and MRT of the two in situ gel eye drops were 2 times higher than that of the commercial resin suspension eye drops in cornea. In conclusion, the two thermosensitive in situ gels have prolonged drug release after ocular drug delivery compared with ion exchange resin eye drops, implying their potential applications in clinic with broad drug adoptability.
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30
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Lee CF, Yang CH, Lin TL, Bahadur P, Chen LJ. Role of molecular weight and hydrophobicity of amphiphilic tri-block copolymers in temperature-dependent co-micellization process and drug solubility. Colloids Surf B Biointerfaces 2019; 183:110461. [DOI: 10.1016/j.colsurfb.2019.110461] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 08/18/2019] [Accepted: 08/25/2019] [Indexed: 01/09/2023]
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31
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Abou‐Shamat MA, Calvo‐Castro J, Stair JL, Cook MT. Modifying the Properties of Thermogelling Poloxamer 407 Solutions through Covalent Modification and the Use of Polymer Additives. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201900173] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Mohamad A. Abou‐Shamat
- Department of Clinical and Pharmaceutical Sciences School of Life and Medical Sciences University of Hertfordshire Hatfield Hertfordshire AL10 9AB UK
| | - Jesus Calvo‐Castro
- Department of Clinical and Pharmaceutical Sciences School of Life and Medical Sciences University of Hertfordshire Hatfield Hertfordshire AL10 9AB UK
| | - Jacqueline L. Stair
- Department of Clinical and Pharmaceutical Sciences School of Life and Medical Sciences University of Hertfordshire Hatfield Hertfordshire AL10 9AB UK
| | - Michael T. Cook
- Department of Clinical and Pharmaceutical Sciences School of Life and Medical Sciences University of Hertfordshire Hatfield Hertfordshire AL10 9AB UK
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32
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Zhao D, Ma Y, Wang E, Lodge TP. Micellization of Binary Diblock Co-polymer Mixtures in an Ionic Liquid. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00613] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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33
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Soliman KA, Ullah K, Shah A, Jones DS, Singh TRR. Poloxamer-based in situ gelling thermoresponsive systems for ocular drug delivery applications. Drug Discov Today 2019; 24:1575-1586. [PMID: 31175956 DOI: 10.1016/j.drudis.2019.05.036] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 04/15/2019] [Accepted: 05/31/2019] [Indexed: 02/06/2023]
Abstract
In situ gels have recently received interest as ocular drug delivery vehicles because they combine the merits of easy instillation and sustained drug release. In this review, we focus on the use of poloxamers as in situ gelling systems in ocular drug delivery because of their thermoresponsive gelling behaviour, biocompatibility, and ease of sterilisation. Furthermore, the sol-gel transition temperature, mucoadhesive properties, and drug release profiles of poloxamer-based in situ gels can be finely tuned, enabling them to be used as vehicles for the delivery of small and large drug molecules to treat diseases of the anterior and posterior segments of the eye. Poloxamer-based ocular products have already found their way to the pharmaceutical market, but remain a potential arena for further investigation and commercial exploitation.
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Affiliation(s)
- Karim A Soliman
- School of Pharmacy, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - K Ullah
- Department of Pharmacy, COMSATS University Islamabad, Abottabad Campus, Pakistan
| | - A Shah
- Department of Pharmacy, COMSATS University Islamabad, Abottabad Campus, Pakistan
| | - David S Jones
- School of Pharmacy, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Thakur R R Singh
- School of Pharmacy, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast BT9 7BL, UK.
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Freitas Mariano KC, Monteiro do Nascimento MH, Querobino SM, Ramos Campos EV, de Oliveira JL, Yokaichiya F, Franco MK, Alberto-Silva C, de Paula E, Lombello CB, de Lima R, Fraceto LF, de Araujo DR. Influence of chitosan-tripolyphosphate nanoparticles on thermosensitive polymeric hydrogels: structural organization, drug release mechanisms and cytotoxicity. INT J POLYM MATER PO 2019. [DOI: 10.1080/00914037.2019.1596909] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
| | | | - Samyr M. Querobino
- Human and Natural Sciences Center, Federal University of ABC, Santo André, SP, Brazil
| | - Estefânia V. Ramos Campos
- Department of Environmental Engineering, State University “Júlio de Mesquita Filho”, Sorocaba, SP, Brazil
| | - Jhones L. de Oliveira
- Department of Environmental Engineering, State University “Júlio de Mesquita Filho”, Sorocaba, SP, Brazil
| | - Fabiano Yokaichiya
- Department Quantum Phenomena in Novel Materials, Helmholtz-Zentrum Berlin für Materialien, Berlin, Germany
| | | | - Carlos Alberto-Silva
- Human and Natural Sciences Center, Federal University of ABC, Santo André, SP, Brazil
| | - Eneida de Paula
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas, Campinas, São Paulo, Brazil
| | - Christiane B. Lombello
- Engineering, Modelling and Applied Social Sciences Center, Federal University of ABC, Santo André, SP, Brazil
| | - Renata de Lima
- Department of Biotechnology, University of Sorocaba, Sorocaba, Brazil
| | - Leonardo F. Fraceto
- Department of Environmental Engineering, State University “Júlio de Mesquita Filho”, Sorocaba, SP, Brazil
| | - Daniele R. de Araujo
- Human and Natural Sciences Center, Federal University of ABC, Santo André, SP, Brazil
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35
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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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36
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Binary mixed micellar systems of PEO-PPO-PEO block copolymers for lamotrigine solubilization: a comparative study with hydrophobic and hydrophilic copolymer. JOURNAL OF POLYMER RESEARCH 2018. [DOI: 10.1007/s10965-018-1473-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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37
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Grisin T, Bories C, Loiseau PM, Bouchemal K. Cyclodextrin-mediated self-associating chitosan micro-platelets act as a drug booster against Candida glabrata mucosal infection in immunocompetent mice. Int J Pharm 2017; 519:381-389. [DOI: 10.1016/j.ijpharm.2017.01.048] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 01/19/2017] [Accepted: 01/23/2017] [Indexed: 10/20/2022]
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38
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Supramolecular Chitosan Micro-Platelets Synergistically Enhance Anti-Candida albicans Activity of Amphotericin B Using an Immunocompetent Murine Model. Pharm Res 2017; 34:1067-1082. [DOI: 10.1007/s11095-017-2117-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Accepted: 02/01/2017] [Indexed: 10/20/2022]
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39
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Ghaouar N, Baroudi M, Othman T. Contribution to the explanation of the association process of two triblock poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) copolymers and their mixtures in an aqueous solution. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.09.123] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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40
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Niang PM, Huang Z, Dulong V, Souguir Z, Le Cerf D, Picton L. Thermo-controlled rheology of electro-assembled polyanionic polysaccharide (alginate) and polycationic thermo-sensitive polymers. Carbohydr Polym 2016; 139:67-74. [DOI: 10.1016/j.carbpol.2015.12.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 11/12/2015] [Accepted: 12/08/2015] [Indexed: 10/22/2022]
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41
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Al Khateb K, Ozhmukhametova EK, Mussin MN, Seilkhanov SK, Rakhypbekov TK, Lau WM, Khutoryanskiy VV. In situ gelling systems based on Pluronic F127/Pluronic F68 formulations for ocular drug delivery. Int J Pharm 2016; 502:70-9. [PMID: 26899977 DOI: 10.1016/j.ijpharm.2016.02.027] [Citation(s) in RCA: 178] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 02/14/2016] [Accepted: 02/15/2016] [Indexed: 12/15/2022]
Abstract
This study evaluated the use of Pluronic F127 and Pluronic F68 as excipients for formulating in situ gelling systems for ocular drug delivery. Thermal transitions have been studied in aqueous solutions of Pluronic F127, Pluronic F68 as well as their binary mixtures using differential scanning calorimetry, rheological measurements, and dynamic light scattering. It was established that the formation of transparent gels at physiologically relevant temperatures is observed only in the case of 20 wt% of Pluronic F127. The addition of Pluronic F68 to Pluronic F127 solutions increases the gelation temperature of binary formulation to above physiological range of temperatures. The biocompatibility evaluation of these formulations using slug mucosa irritation assay and bovine corneal erosion studies revealed that these polymers and their combinations do not cause significant irritation. In vitro drug retention study on glass surfaces and freshly excised bovine cornea showed superior performance of 20 wt% Pluronic F127 compared to other formulations. In addition, in vivo studies in rabbits demonstrated better retention performance of 20 wt% Pluronic F127 compared to Pluronic F68. These results confirmed that 20 wt% Pluronic F127 offers an attractive ocular formulation that can form a transparent gel in situ under physiological conditions with minimal irritation.
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Affiliation(s)
- Kosai Al Khateb
- Reading School of Pharmacy, University of Reading, Whiteknights, PO Box 224, Reading RG6 6AD, United Kingdom
| | | | - Marat N Mussin
- Semey State Medical University, 103 Abai Street, Semey 071400, Kazakhstan
| | | | | | - Wing Man Lau
- Reading School of Pharmacy, University of Reading, Whiteknights, PO Box 224, Reading RG6 6AD, United Kingdom.
| | - Vitaliy V Khutoryanskiy
- Reading School of Pharmacy, University of Reading, Whiteknights, PO Box 224, Reading RG6 6AD, United Kingdom.
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42
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Pradines B, Djabourov M, Vauthier C, Loiseau PM, Ponchel G, Bouchemal K. Gelation and micellization behaviors of pluronic® F127 hydrogel containing poly(isobutylcyanoacrylate) nanoparticles specifically designed for mucosal application. Colloids Surf B Biointerfaces 2015; 135:669-676. [DOI: 10.1016/j.colsurfb.2015.08.021] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Revised: 08/17/2015] [Accepted: 08/18/2015] [Indexed: 10/23/2022]
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43
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Dutra LMU, Ribeiro MENP, Cavalcante IM, Brito DHAD, Semião LDM, Silva RFD, Fechine PBA, Yeates SG, Ricardo NMPS. Binary mixture micellar systems of F127 and P123 for griseofulvin solubilisation. POLIMEROS 2015. [DOI: 10.1590/0104-1428.1831] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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44
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Thermosensitive and mucoadhesive pluronic-hydroxypropylmethylcellulose hydrogel containing the mini-CD4 M48U1 is a promising efficient barrier against HIV diffusion through macaque cervicovaginal mucus. Antimicrob Agents Chemother 2015; 59:2215-22. [PMID: 25645853 DOI: 10.1128/aac.03503-14] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
To be efficient, vaginal microbicide hydrogels should form a barrier against viral infections and prevent virus spreading through mucus. Multiple particle tracking was used to quantify the mobility of 170-nm fluorescently labeled COOH-modified polystyrene particles (COOH-PS) into thermosensitive hydrogels composed of amphiphilic triblock copolymers with block compositions EOn-POm-EOn (where EO refers to ethylene oxide and PO to propylene oxide) containing mucoadhesive hydroxypropylmethylcellulose (HPMC). COOH-PS were used to mimic the size and the surface charge of HIV-1. Analysis of COOH-PS trajectories showed that particle mobility was decreased by Pluronic hydrogels in comparison with cynomolgus macaque cervicovaginal mucus and hydroxyethylcellulose hydrogel (HEC; 1.5% by weight [wt%]) used as negative controls. Formulation of the peptide mini-CD4 M48U1 used as an anti-HIV-1 molecule into a mixture of Pluronic F127 (20 wt%) and HPMC (1 wt%) did not affect its anti-HIV-1 activity in comparison with HEC hydrogel. The 50% inhibitory concentration (IC50) was 0.53 μg/ml (0.17 μM) for M48U1-HEC and 0.58 μg/ml (0.19 μM) for M48U1-F127-HPMC. The present work suggests that hydrogels composed of F127-HPMC (20/1 wt%, respectively) can be used to create an efficient barrier against particle diffusion in comparison to conventional HEC hydrogels.
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45
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Pradines B, Bories C, Vauthier C, Ponchel G, Loiseau PM, Bouchemal K. Drug-Free Chitosan Coated Poly(isobutylcyanoacrylate) Nanoparticles Are Active Against Trichomonas vaginalis and Non-Toxic Towards Pig Vaginal Mucosa. Pharm Res 2014; 32:1229-36. [DOI: 10.1007/s11095-014-1528-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Accepted: 09/18/2014] [Indexed: 10/24/2022]
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46
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Micellization and gelation of PEO-PPO-PEO binary mixture with non-identical PPO block lengths in aqueous solution. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.08.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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47
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Ravani L, Esposito E, Bories C, Moal VLL, Loiseau PM, Djabourov M, Cortesi R, Bouchemal K. Clotrimazole-loaded nanostructured lipid carrier hydrogels: thermal analysis and in vitro studies. Int J Pharm 2013; 454:695-702. [PMID: 23792467 DOI: 10.1016/j.ijpharm.2013.06.015] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Revised: 05/30/2013] [Accepted: 06/03/2013] [Indexed: 01/19/2023]
Abstract
The aim of the present work is to design a new formulation containing clotrimazole (CTZ) loaded into nanostructured lipid carriers (NLC) for the treatment of fungal vaginal infections. In order to obtain formulations with suitable viscosity for mucosal application, NLC containing CTZ produced by the ultrasonication method were viscosized by the addition of poloxamer P407 in the NLC dispersion (CTZ-NLC-gel). These systems exhibit well-known thermogelling properties. The rheological characterization of the CTZ-NLC hydrogel using a controlled stress rheometer evidenced that the presence of NLC or CTZ did not affect gelling temperature (Tgel). Dilution with simulated vaginal fluid (SVF) increased the Tgel from 17.4 to 29.6°C. For these thermogelling systems, micro-calorimetric assays conducted by a Micro-DSC III confirmed that the hydrogel-containing CTZ-NLC was able to change its structure with a rapid passage from non-crystalline (liquid) to crystalline (semi-solid) form. Furthermore, when a local application is considered, no drug should pass through the vaginal mucosa, limiting thus the systemic diffusion and toxicity. For this purpose, Franz cell has been employed to investigate the ex vivo permeation of CTZ through pig vaginal mucosa. The results showed no CTZ diffusion. The toxicological experiments performed on HeLa cells after a 24h incubation time confirmed that CTZ-NLC-gel at a concentration of 1mg/mL showed a low toxicity profile resulting in a cell vitality of 77.2%. Interestingly, anti-candida activity studies demonstrated that CTZ-NLC gel was 4-fold more active than Fungizone(®) against Candida albicans. These encouraging results suggest that the hydrogel containing CTZ-NLC could be proposed as an innovative system to administer CTZ to treat vaginal infections.
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Affiliation(s)
- Laura Ravani
- Department of Life Sciences and Biotechnology, University of Ferrara, Italy
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