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Landazuri G, Fernandez V, Soltero J, Rharbi Y. Length of the Core Forming Block Effect on Fusion and Fission Dynamics at Equilibrium in PEO–PPO–PEO Triblock Copolymer Micelles in the Spherical Regime. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c01520] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- G. Landazuri
- Université Grenoble Alpes—LRP, F-38041 Grenoble, France
- CNRS, LRP, F-38041 Grenoble, France
- Departamento de Ingeniería Química, CUCEI, Universidad de Guadalajara, Blvd. M. García Barragán # 1421, Guadalajara, Jalisco 44430, Mexico
| | - V.V.A. Fernandez
- Université Grenoble Alpes—LRP, F-38041 Grenoble, France
- CNRS, LRP, F-38041 Grenoble, France
- Departamento de Ciencias Tecnológicas, Universidad de Guadalajara, Av. Universidad No. 1115, Ocotlán, Jalisco 47820, Mexico
| | - J.F.A. Soltero
- Université Grenoble Alpes—LRP, F-38041 Grenoble, France
- CNRS, LRP, F-38041 Grenoble, France
- Departamento de Ingeniería Química, CUCEI, Universidad de Guadalajara, Blvd. M. García Barragán # 1421, Guadalajara, Jalisco 44430, Mexico
| | - Y. Rharbi
- Université Grenoble Alpes—LRP, F-38041 Grenoble, France
- CNRS, LRP, F-38041 Grenoble, France
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Saoudi O, Lasrem A, Ghaouar N. Studies of the behavior of reverse nonionic surfactant Pluronic 31R1 in aqueous and Propylammonium acetate (PAAc) ionic liquid solutions. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-020-02315-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sivaraman A, Banga AK. Novel in situ forming hydrogel microneedles for transdermal drug delivery. Drug Deliv Transl Res 2017; 7:16-26. [PMID: 27562294 DOI: 10.1007/s13346-016-0328-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Novel in situ forming hydrogel microneedles were evaluated for transdermal drug delivery using a biocompatible non-ionic triblock amphiphilic thermosensitive copolymer. The transition property of poloxamer from solution at room temperature to gel at skin temperature (32 °C) was utilized in preparation of in situ forming hydrogel microneedles. Methotrexate has been used to treat solid tumors, but because of its narrow safety margin, it requires sustained delivery within the therapeutic window. Formulations with and without poloxamer at different methotrexate concentrations were prepared and evaluated for drug permeation across skin using vertical Franz diffusion cell for 72 h. Sol-gel transition, skin resistance and thickness, microneedles geometry, microchannel depth, shape, formation and uniformity, viscoelasticity of skin, and in vitro drug permeation were characterized and tested. An average cumulative drug amount of 32.2 ± 15.76 and 114.54 ± 40.89 μg/cm2 for porcine ear skin and 3.89 ± 0.60 and 10.27 ± 6.98 μg/cm2 for dermatomed human skin from 0.2 % w/w and 0.4 % w/w methotrexate formulations was delivered by the in situ forming hydrogel microneedles. These in situ hydrogel microneedles embedded within the porated site of the skin provided a steady and sustained drug delivery.
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Affiliation(s)
- Arunprasad Sivaraman
- College of Pharmacy, Department of Pharmaceutical Sciences, Mercer University, Atlanta, GA, USA
| | - Ajay K Banga
- College of Pharmacy, Department of Pharmaceutical Sciences, Mercer University, Atlanta, GA, USA.
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Rheological Properties and Reverse Micelles Conditions of PEO-PPO-PEO Pluronic F68: Effects of Temperature and Solvent Mixtures. ACTA ACUST UNITED AC 2013. [DOI: 10.1155/2013/768653] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The rheological properties of Pluronic F68 were dissolved in various water/organic liquid mixtures over a wide range of temperatures, all at a concentration of 20 mg/mL. We have considered the following binary mixtures: Pluronic F68/water, F68/p-xylene, and F68/phenol. Various conformational transitions were detected and interpreted. We have also shown that these mixtures retain a Newtonian behavior independently of temperature and conformational changes. For ternary F68/p-xylene/water, F68/phenol/water, and F68/water/phenol mixtures, the behaviour of the solution is intimately related to the temperature and the amount of water and organic solvent added.
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Ghaouar N, Henda MB, Aschi A, Gharbi A. Study of PEO—PPO—PEO Copolymers Conformational Changes: Viscosity and Dynamic Light Scattering Measurements. J MACROMOL SCI B 2011. [DOI: 10.1080/00222348.2011.557629] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- N. Ghaouar
- a Laboratoire de Physique de la Matière Molle , Faculté des Sciences de Tunis, Campus Universitaire , Tunisia
- b Institut National des Sciences Appliquées et de Technologie , INSAT, Centre Urbain Nord , Tunis, Tunisia
| | - M. Ben Henda
- a Laboratoire de Physique de la Matière Molle , Faculté des Sciences de Tunis, Campus Universitaire , Tunisia
| | - A. Aschi
- a Laboratoire de Physique de la Matière Molle , Faculté des Sciences de Tunis, Campus Universitaire , Tunisia
| | - A. Gharbi
- a Laboratoire de Physique de la Matière Molle , Faculté des Sciences de Tunis, Campus Universitaire , Tunisia
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Liang X, Guo C, Ma J, Wang J, Chen S, Liu H. Temperature-Dependent Aggregation and Disaggregation of Poly(ethylene oxide)-Poly(propylene oxide)-Poly(ethylene oxide) Block Copolymer in Aqueous Solution. J Phys Chem B 2007; 111:13217-20. [DOI: 10.1021/jp074990n] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiangfeng Liang
- Laboratory of Separation Science and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Graduate University of Chinese Academy of Sciences, Beijing 100080, China
| | - Chen Guo
- Laboratory of Separation Science and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Graduate University of Chinese Academy of Sciences, Beijing 100080, China
| | - Junhe Ma
- Laboratory of Separation Science and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Graduate University of Chinese Academy of Sciences, Beijing 100080, China
| | - Jing Wang
- Laboratory of Separation Science and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Graduate University of Chinese Academy of Sciences, Beijing 100080, China
| | - Shu Chen
- Laboratory of Separation Science and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Graduate University of Chinese Academy of Sciences, Beijing 100080, China
| | - Huizhou Liu
- Laboratory of Separation Science and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Graduate University of Chinese Academy of Sciences, Beijing 100080, China
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Dumortier G, Grossiord JL, Agnely F, Chaumeil JC. A review of poloxamer 407 pharmaceutical and pharmacological characteristics. Pharm Res 2006; 23:2709-28. [PMID: 17096184 DOI: 10.1007/s11095-006-9104-4] [Citation(s) in RCA: 785] [Impact Index Per Article: 43.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2006] [Accepted: 06/27/2006] [Indexed: 12/16/2022]
Abstract
Poloxamer 407 copolymer (ethylene oxide and propylene oxide blocks) shows thermoreversible properties, which is of the utmost interest in optimising drug formulation (fluid state at room temperature facilitating administration and gel state above sol-gel transition temperature at body temperature promoting prolonged release of pharmacological agents). Pharmaceutical evaluation consists in determining the rheological behaviour (flow curve or oscillatory studies), sol-gel transition temperature, in vitro drug release using either synthetic or physiological membrane and (bio)adhesion characteristics. Poloxamer 407 formulations led to enhanced solubilisation of poorly water-soluble drugs and prolonged release profile for many galenic applications (e.g., oral, rectal, topical, ophthalmic, nasal and injectable preparations) but did not clearly show any relevant advantages when used alone. Combination with other excipients like Poloxamer 188 or mucoadhesive polymers promotes Poloxamer 407 action by optimising sol-gel transition temperature or increasing bioadhesive properties. Inclusion of liposomes or micro(nano)particles in Poloxamer 407 formulations offers interesting prospects, as well. Besides these promising data, Poloxamer 407 has been held responsible for lipidic profile alteration and possible renal toxicity, which compromises its development for parenteral applications. In addition, new findings have demonstrated immuno-modulation and cytotoxicity-promoting properties of Poloxamer 407 revealing significant pharmacological interest and, hence, human trials are in progress to specify these potential applications.
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Affiliation(s)
- Gilles Dumortier
- Laboratoire de Galénique, UPRES EA 2498, Faculté des Sciences Pharmaceutiques et Biologiques (Université Paris 5), 4, Avenue de l'Observatoire, 75270, Paris Cedex 06, France.
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Lebens PJM, Keurentjes JTF. Temperature-Induced Solubilization of Hydrocarbons in Aqueous Block Copolymer Solutions. Ind Eng Chem Res 1996. [DOI: 10.1021/ie960066w] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paul J. M. Lebens
- Akzo Nobel Central Research, Department RTA, P.O. Box 9300, 6800 SB Arnhem, The Netherlands
| | - Jos T. F. Keurentjes
- Akzo Nobel Central Research, Department RTA, P.O. Box 9300, 6800 SB Arnhem, The Netherlands
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Pandya K, Bahadur P, Nagar T, Bahadur A. Micellar and solubilizing behaviour of Pluronic L-64 in water. Colloids Surf A Physicochem Eng Asp 1993. [DOI: 10.1016/0927-7757(93)80295-p] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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10
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Almgren M, Bahadur P, Jansson M, Li P, Brown W, Bahadur A. Static and dynamic properties of a (PEOPPOPEO) block copolymer in aqueous solution. J Colloid Interface Sci 1992. [DOI: 10.1016/0021-9797(92)90247-j] [Citation(s) in RCA: 87] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Cheng HY, Holl WW. Micellar aggregation of poloxamer 213 and its interaction with cholesterol derivatives. J Pharm Sci 1990; 79:907-12. [PMID: 2177790 DOI: 10.1002/jps.2600791013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The micellar properties of Poloxamer 213 (1), a Pluronic copolymer shown to affect lipid absorption and serum cholesterol level in experimental animals, are investigated by surface tension measurements, photon correlation spectroscopy (PCS), Reichardt's dye solubilization technique, differential scanning calorimetry (DSC), electron paramagnetic resonance (EPR) spectrometry, and fluorescence spectroscopy. The clear inflection point at 3 x 10(-6) M (25 degrees C) observed in the surface tension-concentration curve may not represent the CMC for the formation of multimolecular aggregates. In the 10(-4) to 10(-2) M concentration range, the temperature-dependent transition (as the concentration of 1 increases) from the larger (hydrodynamic radius, Rh approximately 20-40 nm), highly hydrated aggregates to the contracted (Rh approximately 6-7 nm), less polar form occurs as a discontinuity. This process is endothermic, with an average delta H of 34.5 kcal/mol. At 25 degrees C, both the 25-(NBD-methylamino)-27-norcholesterol (fluorescence probe) and 3-Doxyl-5 alpha-cholestane (EPR spin probe) begin to show significant interaction with 1 in the 10(-3) M range. The sequestration of the fluorescent cholesterol probe by 1 aggregates begins at approximately 2 x 10(-4) M at 35 degrees C. Analysis of EPR and fluorescence data indicates that the cholesterol analogues are in a nonpolar micellar environment of low fluidity. The significance and implication of the data are discussed in the context of the hypothesized cholesterol sequestration by 1 under physiological conditions.
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Affiliation(s)
- H Y Cheng
- Physical and Structural Chemistry Department, Smith Kline and French Laboratories, King of Prussia, PA 19406
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13
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Topchieva IN. Aqueous solutions of oligomers based on ethylene oxide (review). Pharm Chem J 1989. [DOI: 10.1007/bf00831690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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14
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Ultrasonic velocity and light-scattering studies on the polyoxyethylene—polyoxypropylene copolymer Pluronic F127 in aqueous solution. Int J Pharm 1982. [DOI: 10.1016/0378-5173(82)90141-7] [Citation(s) in RCA: 125] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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