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Figueroa-Ochoa EB, Bravo-Anaya LM, Vaca-López R, Landázuri-Gómez G, Rosales-Rivera LC, Diaz-Vidal T, Carvajal F, Macías-Balleza ER, Rharbi Y, Soltero-Martínez JFA. Structural Behavior of Amphiphilic Triblock Copolymer P104/Water System. Polymers (Basel) 2023; 15:polym15112551. [PMID: 37299350 DOI: 10.3390/polym15112551] [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: 05/13/2023] [Revised: 05/26/2023] [Accepted: 05/28/2023] [Indexed: 06/12/2023] Open
Abstract
A detailed study of the different structural transitions of the triblock copolymer PEO27-PPO61-PEO27 (P104) in water, in the dilute and semi-dilute regions, is addressed here as a function of temperature and P104 concentration (CP104) by mean of complimentary methods: viscosimetry, densimetry, dynamic light scattering, turbidimetry, polarized microscopy, and rheometry. The hydration profile was calculated through density and sound velocity measurements. It was possible to identify the regions where monomers exist, spherical micelle formation, elongated cylindrical micelles formation, clouding points, and liquid crystalline behavior. We report a partial phase diagram including information for P104 concentrations from 1 × 10-4 to 90 wt.% and temperatures from 20 to 75 °C that will be helpful for further interaction studies with hydrophobic molecules or active principles for drug delivery.
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Affiliation(s)
- Edgar Benjamín Figueroa-Ochoa
- Departamento de Química, Universidad de Guadalajara, Blvd. M. García Barragán #1451, Guadalajara 44430, Jalisco, Mexico
| | - Lourdes Mónica Bravo-Anaya
- Université Grenoble Alpes, CNRS, Grenoble INP (Institut of Engineering Univ. Grenoble Alpes), 38000 Grenoble, France
- Departamento de Ingeniería Química, Universidad de Guadalajara, Blvd. M. García Barragán #1451, Guadalajara 44430, Jalisco, Mexico
- Université de Rennes, Institut des Sciences Chimiques de Rennes, Équipe CORINT, CNRS, UMR 6226, Campus de Beaulieu, Bat 10A, 35042 Rennes Cedex, France
| | - Ricardo Vaca-López
- Departamento de Química, Universidad de Guadalajara, Blvd. M. García Barragán #1451, Guadalajara 44430, Jalisco, Mexico
| | - Gabriel Landázuri-Gómez
- Université Grenoble Alpes, CNRS, Grenoble INP (Institut of Engineering Univ. Grenoble Alpes), 38000 Grenoble, France
- Departamento de Ingeniería Química, Universidad de Guadalajara, Blvd. M. García Barragán #1451, Guadalajara 44430, Jalisco, Mexico
| | - Luis Carlos Rosales-Rivera
- Departamento de Ingeniería Química, Universidad de Guadalajara, Blvd. M. García Barragán #1451, Guadalajara 44430, Jalisco, Mexico
| | - Tania Diaz-Vidal
- Departamento de Ingeniería Química, Universidad de Guadalajara, Blvd. M. García Barragán #1451, Guadalajara 44430, Jalisco, Mexico
| | - Francisco Carvajal
- Centro Universitario UTEG, Departamento de Investigación, Héroes Ferrocarrileros #1325, Guadalajara 44460, Jalisco, Mexico
- CUTonalá, Departamento de Ingenierías, Universidad de Guadalajara, Nuevo Periférico # 555, Ejido San José Tatepozco 45425, Jalisco, Mexico
| | - Emma Rebeca Macías-Balleza
- Departamento de Ingeniería Química, Universidad de Guadalajara, Blvd. M. García Barragán #1451, Guadalajara 44430, Jalisco, Mexico
| | - Yahya Rharbi
- Université Grenoble Alpes, CNRS, Grenoble INP (Institut of Engineering Univ. Grenoble Alpes), 38000 Grenoble, France
| | - J Félix Armando Soltero-Martínez
- Université Grenoble Alpes, CNRS, Grenoble INP (Institut of Engineering Univ. Grenoble Alpes), 38000 Grenoble, France
- Departamento de Ingeniería Química, Universidad de Guadalajara, Blvd. M. García Barragán #1451, Guadalajara 44430, Jalisco, Mexico
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Patel D, Bhojani AK, Ray D, Singh DK, Bhattacharjee S, Seth D, Aswal VK, Kuperkar K, Bahadur P. Glucose-induced self-assembly and phase separation in hydrophilic triblock copolymers and the governing mechanism. Phys Chem Chem Phys 2022; 24:21141-21156. [PMID: 36039741 DOI: 10.1039/d2cp01909d] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Poly(ethylene oxide, EO)-poly(propylene oxide, PO)-poly(ethylene oxide, EO)-based triblock copolymers (BCPs) with 80% hydrophilicity stay molecularly dissolved as Gaussian chains at ambient temperature, even at fairly high concentrations (>5 %w/v). This study presents the plausible micellization behaviour of such very-hydrophilic Pluronics® - F38, F68, F88, F98, and F108 - incited upon the addition of glucose at low concentrations and temperatures. The outcomes obtained from phase behaviour and scattering studies are described. At temperatures near to ambient temperature, these BCPs form micelles with a central core made of a PO block, surrounded by a corona of highly hydrated EO chains. The phase transitions in these hydrophilic Pluronics® in the presence of glucose are demonstrated via the dehydration of the copolymer coil, leading to a decrease in the I1/I3 ratio, as determined using fluorescence spectroscopy. The temperature-dependent cloud point (CP) showed a marked decrease with an increase in the PO molecular weight and also in the presence of glucose. The change in solution relative viscosity (ηrel) caused by glucose is due to the enhanced dehydration of the EO block of the BCP amphiphile. Dynamic light scattering (DLS) and small-angle neutron scattering (SANS) investigations suggested that the dimensions of the hydrophobic core increase during the dehydration of the EO-PO blocks upon a temperature increase or after adding varying concentrations of glucose, thereby resulting in a micellar shape transition. It has been observed that added glucose influences the phase behaviour of BCPs in an analogous way to the influence of temperature. Also, plausible interactions between the EO-PO blocks and glucose were suggested based on the evaluated optimized descriptors obtained from a computational simulation approach. In addition, the core-shell blended micelles obtained using these BCPs are successfully utilized for drug (curcumin, Cur) solubilization based on the observed peak intensities from UV-visible spectroscopy. The loading of Cur into glucose-containing and glucose-free hydrophilic Pluronic® micelles shows how the radius of the micellar core (Rc) increases in the presence of glucose, thereby indicating Cur solubility enhancement for the Pluronic® micelles. Various kinetics models were employed, demonstrating a drug release profile that enables this approach to be used as an ideal platform for drug delivery.
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Affiliation(s)
- Divya Patel
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology (SVNIT), Ichchhanath, Surat-395 007, Gujarat, India.
| | - Amit K Bhojani
- Department of Basic Sciences, Institute of Infrastructure Technology Research and Management (IITRAM), Ahmedabad-380 026, India
| | - Debes Ray
- Solid State Physics Division, Bhabha Atomic Research Centre (BARC), Trombay, Mumbai, 400 085, Maharashtra, India
| | - Dheeraj K Singh
- Department of Basic Sciences, Institute of Infrastructure Technology Research and Management (IITRAM), Ahmedabad-380 026, India
| | - Sanyukta Bhattacharjee
- Department of Chemistry, Indian Institute of Technology Patna (IITP), Bihta, Patna, 801 106, Bihar, India
| | - Debabrata Seth
- Department of Chemistry, Indian Institute of Technology Patna (IITP), Bihta, Patna, 801 106, Bihar, India
| | - Vinod K Aswal
- Solid State Physics Division, Bhabha Atomic Research Centre (BARC), Trombay, Mumbai, 400 085, Maharashtra, India
| | - Ketan Kuperkar
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology (SVNIT), Ichchhanath, Surat-395 007, Gujarat, India.
| | - Pratap Bahadur
- Department of Chemistry, Veer Narmad South Gujarat University (VNSGU), Udhana-Magdalla Road, Surat-395 007, Gujarat, India
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Shete A, Nadaf S, Doijad R, Killedar S. Liquid Crystals: Characteristics, Types of Phases and Applications in Drug Delivery. Pharm Chem J 2021. [DOI: 10.1007/s11094-021-02396-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Shah V, Bharatiya B, Gawali S, Hassan PA, Shukla AD, Khandelwal A, Bhatt H, Vasu V, Shah DO. Thermoresponsive liquid crystalline formulation of Exemestane: Design and structural characterization. Colloids Surf B Biointerfaces 2021; 202:111683. [PMID: 33721804 DOI: 10.1016/j.colsurfb.2021.111683] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 02/28/2021] [Accepted: 03/04/2021] [Indexed: 11/18/2022]
Abstract
Exemestane (EXE), a drug used for the treatment of breast cancer, has limited aqueous solubility of 0.08 mg/mL and log P∼ 4.22. The only available marketed formulation in form of tablets possess limitations of poor oral absorption (∼ 42 %), low solubility, extensive hepatic metabolism and numerous adverse effects due to its peripheral absorption. In order to address these issues, an alternative route of topical application is attempted through a lamellar liquid crystal based formulation. Pluronic® was used as stabilizer due to its higher surface activity and gelling properties. The solubility enhancement of EXE was achieved using liquid crystal formulation. We have investigated the effect of concentration of oil, Smix (surfactant - cosurfactant mixture) and EXE on lattice parameter, rheology and drug release for various combinations of the formulation. The small angle x-ray scattering (SAXS) measurement demonstrated an evidence of a lamellar structure with lattice parameter ∼15 nm, which increases with corresponding increase in oil and EXE due to increase in hydrophobic interactions leading to an expansion of lamella. The inter lamellar distance decreases at higher surfactant concentration, due to the distribution of the same amount of oil and drug within larger concentration of surfactant molecules. The rheology measurement exhibited gel like properties at low shear rate indicating soft gel formation, which converts to Newtonian type flowing liquid at higher shear rate. At constant Smix with increasing oil content, the viscosity decreases, which is attributed to the dilution of the lamellar structures with oil. The temperature sweep rheology reveals a change in the viscosity near physiological temperature, which may be attributed to the structural transition of lamellae. The formulation remains gel like at room temperature, which aids in proper application to skin and converts it to free flowing liquid above 37 °C. The invitro drug release of optimized formulation for 24 h was ∼ 38 % at 37 °C, which increased to 50 % at 42 °C. Accordingly, this formulation containing thermoresponsive lamellar liquid crystal gels of EXE represents a viable option for hyperthermia induced enhanced drug release. The characteristic and advantageous features offered by this formulation includes improved bioavailability of EXE due to enhanced solubility, permeability and absorption.
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Affiliation(s)
- Vidhi Shah
- L. M. College of Pharmacy, Ahmedabad, 380009, Gujarat, India; Shah-Schulman Center for Surface Science and Nanotechnology, Dharmsinh Desai University, Nadiad, 387001, Gujarat, India
| | - Bhavesh Bharatiya
- Shah-Schulman Center for Surface Science and Nanotechnology, Dharmsinh Desai University, Nadiad, 387001, Gujarat, India; Department of Chemistry, University of Bristol, Bristol, BS8 1TS, United Kingdom.
| | - Santosh Gawali
- Homi Bhabha National Institute, Anushaktinagar and Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
| | - Puthusserickal A Hassan
- Homi Bhabha National Institute, Anushaktinagar and Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
| | - Atindra D Shukla
- Shah-Schulman Center for Surface Science and Nanotechnology, Dharmsinh Desai University, Nadiad, 387001, Gujarat, India
| | - Ankit Khandelwal
- Department of Zoology, The Maharaja Sayajirao University of Baroda, Vadodara, India
| | - Himadri Bhatt
- Department of Zoology, The Maharaja Sayajirao University of Baroda, Vadodara, India
| | - Vihas Vasu
- Department of Zoology, The Maharaja Sayajirao University of Baroda, Vadodara, India; Institute of Interdisciplinary Studies, The Maharaja Sayajirao University of Baroda, Vadodara, Gujarat, India
| | - Dinesh O Shah
- Shah-Schulman Center for Surface Science and Nanotechnology, Dharmsinh Desai University, Nadiad, 387001, Gujarat, India; Department of Chemical Engineering and Anesthesiology, University of Florida, USA
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Mazzotta E, Oliviero Rossi C, Muzzalupo R. Different BRIJ97 colloid systems as potential enhancers of acyclovir skin permeation and depot. Colloids Surf B Biointerfaces 2019; 173:623-631. [DOI: 10.1016/j.colsurfb.2018.10.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 10/09/2018] [Accepted: 10/16/2018] [Indexed: 10/28/2022]
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Junqueira Garcia MT, Pedralino Gonçalves T, São Félix Martins É, Silva Martins T, Carvalho de Abreu Fantini M, Regazi Minarini PR, Costa Fernandez S, Cassone Salata G, Biagini Lopes L. Improvement of cutaneous delivery of methylene blue by liquid crystals. Int J Pharm 2018; 548:454-465. [DOI: 10.1016/j.ijpharm.2018.07.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 06/28/2018] [Accepted: 07/01/2018] [Indexed: 10/28/2022]
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Tavano L, Mazzotta E, Muzzalupo R. Innovative topical formulations from diclofenac sodium used as surfadrug: The birth of Diclosomes. Colloids Surf B Biointerfaces 2018; 164:177-184. [PMID: 29413594 DOI: 10.1016/j.colsurfb.2018.01.030] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 01/14/2018] [Accepted: 01/17/2018] [Indexed: 12/26/2022]
Abstract
HYPOTHESIS Due to the well-know surfactant-like properties of diclofenac sodium (DS), vesicular systems consisting exclusively of DS, named diclosomes, were designed with the aim to minimize or avoid the use of other excipients and to improve the formulation biocompatibility. EXPERIMENTS Diclosomes were designed and characterized in terms of dimensions, polydispersity index, ξ-potential, drug retained, stability as a function of storage time and ex-vivo percutaneous permeation profiles. Additionally, diclosomes were incorporated into gel dosage forms and their performance in terms of permeation enhancement were evaluated. FINDINGS DS was found to form nanosized vesicular systems, both alone and in presence of cholesterol. Increasing hydrophobicity (due to the presence of cholesterol) resulted in smaller vesicles, always spherical and homogeneous in shape. Permeation of DS from free solution was found to be lower respect to ones obtained for all diclosomal formulations, allowing these aggregates to be considered as percutaneous permeation enhancers. DS permeated from diclosomal gels was higher than that obtained with traditional niosomal gel, DS plain gel and commercial specialty Voltaren Emulgel® 1%, while containing a considerably lower drug amount.
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Affiliation(s)
- Lorena Tavano
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Via Pietro Bucci, Ed. Polifunzionale, 87036 Arcavacata di Rende, Italy.
| | - Elisabetta Mazzotta
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Via Pietro Bucci, Ed. Polifunzionale, 87036 Arcavacata di Rende, Italy
| | - Rita Muzzalupo
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Via Pietro Bucci, Ed. Polifunzionale, 87036 Arcavacata di Rende, Italy
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8
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Cassano R, Trombino S. Trehalose-based hydrogel potentially useful for the skin burn treatment. J Appl Polym Sci 2017. [DOI: 10.1002/app.44755] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Roberta Cassano
- Department of Pharmacy; Health and Nutritional Sciences, University of Calabria; 87036 Arcavacata di Rende Cosenza Italy
| | - Sonia Trombino
- Department of Pharmacy; Health and Nutritional Sciences, University of Calabria; 87036 Arcavacata di Rende Cosenza Italy
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Tavano L, Gentile L, Oliviero Rossi C, Muzzalupo R. Novel gel-niosomes formulations as multicomponent systems for transdermal drug delivery. Colloids Surf B Biointerfaces 2013; 110:281-8. [DOI: 10.1016/j.colsurfb.2013.04.017] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Revised: 03/27/2013] [Accepted: 04/18/2013] [Indexed: 11/25/2022]
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10
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Lapteva M, Kalia YN. Microstructured bicontinuous phase formulations: their characterization and application in dermal and transdermal drug delivery. Expert Opin Drug Deliv 2013; 10:1043-59. [DOI: 10.1517/17425247.2013.783008] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Gels of Pluronic F127 and nonionic surfactants from rheological characterization to controlled drug permeation. Colloids Surf B Biointerfaces 2011; 87:42-8. [DOI: 10.1016/j.colsurfb.2011.04.033] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2011] [Revised: 04/27/2011] [Accepted: 04/29/2011] [Indexed: 11/21/2022]
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Muzzalupo R, Tavano L, Cassano R, Trombino S, Ferrarelli T, Picci N. A new approach for the evaluation of niosomes as effective transdermal drug delivery systems. Eur J Pharm Biopharm 2011; 79:28-35. [PMID: 21303691 DOI: 10.1016/j.ejpb.2011.01.020] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2010] [Revised: 01/13/2011] [Accepted: 01/31/2011] [Indexed: 10/18/2022]
Abstract
The central motivation for this study was to evaluate if the increased hydrophilic drug permeation across the skin, which is always observed in presence of vesicular systems, is dependent on the structural organization of niosomes, that are used to transport the active molecules, or if it is only dependent on the surfactant dual nature. To answer this question, non-ionic surfactants belonging to the class of Pluronic and sucrose esters were used both as components of niosomal systems or in the form of sub-micellar solutions. The obtained niosomes were characterized by their entrapment efficiency, size and morphology. The enhancing effect of niosomes on the ex vivo percutaneous penetration of a model drug was investigated using a Franz-type diffusion chamber and compared to that obtained by using sub-micellar solution of surfactant or achieving pretreatment of the skin with surfactants' sub-micellar solution or empty niosomes. The results suggest that the surfactants used in this study could be considered as percutaneous permeation enhancers only when they are in the form of drug-loaded vesicular systems: no percutaneous promotion was achieved by using sub-micellar solution containing free Sulfadiazine sodium salt or performing pretreatment with empty niosomes or sub-micellar solutions of the surfactant. In our experiments, only niosomes act as effective transdermal drug delivery systems.
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Affiliation(s)
- Rita Muzzalupo
- Department of Pharmaceutical Sciences, Calabria University, Rende, Italy.
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