1
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Tariq M, Khokhar R, Javed A, Usman M, Anjum SMM, Rasheed H, Bukhari NI, Yan C, Nawaz HA. Novel Hydrophilic Oligomer-Crosslinked Gelatin-Based Hydrogels for Biomedical Applications. Gels 2023; 9:564. [PMID: 37504443 PMCID: PMC10379017 DOI: 10.3390/gels9070564] [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: 06/20/2023] [Revised: 07/06/2023] [Accepted: 07/07/2023] [Indexed: 07/29/2023] Open
Abstract
Gelatin-based hydrogels have shown good injectability and biocompatibility and have been broadly used for drug delivery and tissue regeneration. However, their low mechanical strengths and fast degradation rates must be modified for long-term implantation applications. With an aim to develop mechanically stable hydrogels, reactive anhydride-based oligomers were developed and used to fabricate gelatin-based crosslinked hydrogels in this study. A cascade of hydrophilic oligomers containing reactive anhydride groups was synthesized by free radical polymerization. These oligomers varied in degree of reactivity, comonomer composition, and showed low molecular weights (Mn < 5 kDa). The reactive oligomers were utilized to fabricate hydrogels that differed in their mechanical strengths and degradation profiles. These formulations exhibited good cytocompatibility with human adipose tissue-derived stem cells (hADCs). In conclusion, the reactive MA-containing oligomers were successfully synthesized and utilized for the development of oligomer-crosslinked hydrogels. Such oligomer-crosslinked gelatin-based hydrogels hold promise as drug or cell carriers in various biomedical applications.
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Affiliation(s)
- Mamoona Tariq
- School of Pharmacy, Shanghai Jiao Tong University, Dongchuan Road 800, Minhang District, Shanghai 200240, China
| | - Rabia Khokhar
- Punjab University College of Pharmacy (PUCP), University of the Punjab, Lahore 54000, Pakistan
- Institute of Pharmaceutical Sciences (IPS), University of Veterinary & Animal Sciences (UVAS), Lahore 54000, Pakistan
| | - Arslan Javed
- Punjab University College of Pharmacy (PUCP), University of the Punjab, Lahore 54000, Pakistan
- Institute of Pharmaceutical Sciences (IPS), University of Veterinary & Animal Sciences (UVAS), Lahore 54000, Pakistan
| | - Muhammad Usman
- Institute of Pharmaceutical Sciences (IPS), University of Veterinary & Animal Sciences (UVAS), Lahore 54000, Pakistan
| | - Syed Muhammad Muneeb Anjum
- Institute of Pharmaceutical Sciences (IPS), University of Veterinary & Animal Sciences (UVAS), Lahore 54000, Pakistan
| | - Huma Rasheed
- Institute of Pharmaceutical Sciences (IPS), University of Veterinary & Animal Sciences (UVAS), Lahore 54000, Pakistan
| | - Nadeem Irfan Bukhari
- Punjab University College of Pharmacy (PUCP), University of the Punjab, Lahore 54000, Pakistan
| | - Chao Yan
- School of Pharmacy, Shanghai Jiao Tong University, Dongchuan Road 800, Minhang District, Shanghai 200240, China
| | - Hafiz Awais Nawaz
- Institute of Pharmaceutical Sciences (IPS), University of Veterinary & Animal Sciences (UVAS), Lahore 54000, Pakistan
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2
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Parekh PY, Patel VI, Khimani MR, Bahadur P. Self-assembly of bile salts and their mixed aggregates as building blocks for smart aggregates. Adv Colloid Interface Sci 2023; 312:102846. [PMID: 36736167 DOI: 10.1016/j.cis.2023.102846] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 01/11/2023] [Accepted: 01/22/2023] [Indexed: 01/27/2023]
Abstract
The present communication offers a comprehensive overview of the self-assembly of bile salts emphasizing their mixed smart aggregates with a variety of amphiphiles. Using an updated literature survey, we have explored the dissimilar interactions of bile salts with different types of surfactants, phospholipids, ionic liquids, drugs, and a variety of natural and synthetic polymers. While assembling this review, special attention was also provided to the potency of bile salts to alter the size/shape of aggregates formed by several amphiphiles to use these aggregates for solubility improvement of medicinally important compounds, active pharmaceutical ingredients, and also to develop their smart delivery vehicles. A fundamental understanding of bile salt mixed aggregates will enable the development of new strategies for improving the bioavailability of drugs solubilized in newly developed potential hosts and to formulate smart aggregates of desired morphology for specific targeted applications. It enriches our existing knowledge of the distinct interactions exerted in mixed systems of bile salts with variety of amphiphiles. By virtue of this, researchers can get innovative ideas to construct novel nanoaggregates from bile salts by incorporating various amphiphiles that serve as a building block for smart aggregates for their numerous industrial applications.
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Affiliation(s)
- Paresh Y Parekh
- Department of Chemistry, Veer Narmad South Gujarat University, Surat 395007, Gujarat, India
| | - Vijay I Patel
- Department of Chemistry, Navyug Science College, Rander Road, Surat 395009, Gujarat, India.
| | - Mehul R Khimani
- Countryside International School, Nr. Bhesan Railway Crossing, CIS Barbodhan Road, Surat 394125, Gujarat, India
| | - Pratap Bahadur
- Department of Chemistry, Veer Narmad South Gujarat University, Surat 395007, Gujarat, India
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3
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Vormittag LC, Heerklotz H. Extending the Pseudo-Phase Model of Detergent-Lipid Dispersions by a Detergent-Binding Protein. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:15592-15603. [PMID: 36480936 PMCID: PMC9774659 DOI: 10.1021/acs.langmuir.2c02234] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 10/12/2022] [Indexed: 06/17/2023]
Abstract
Mixed micellar drug delivery systems for poorly soluble active pharmaceutical ingredients (APIs) are easy to produce and long-term stable, because they represent equilibrium structures. However, their fate after intravenous injection is still largely unknown. Once injected into the bloodstream, they can potentially convert to vesicles or disappear altogether, with both API and excipients being picked up by blood components. Our study aimed at reducing the gap between the good, quantitative understanding of aqueous glycocholate (GC)-lecithin dispersions alone and the highly complex situation in the blood. To this end, we extended the pseudophase model previously established for lipid-detergent dispersions to include the detergent-binding protein albumin as another component. The model predicted a quaternary phase diagram with planar phase boundaries defined by key parameters of the ternary subsystems, which were then determined by isothermal titration calorimetry. They include the aqueous GC concentration upon bilayer-micelle coexistence, 5.2 mM, the GC-to-lipid mole ratios in coexisting bilayers (Resat = 0.2) and micelles (Resol = 0.7), as well as the capacity of the albumin to bind 0.1 GC molecules with a dissociation constant of KD = 0.1 mM and 6 GC molecules with KD = 0.7 mM. Subsequent measurements in the quaternary system showed phase boundaries in good agreement with the model predictions. In addition, the critical micelle concentration of GC shows a minimal value (midpoint of transition) of 9.1 mM at the temperature of 24 °C where the demicellization enthalpy is zero. The demicellization process is accompanied by a heat capacity change of 29 cal/mol K. The model improves the understanding of the mixed micellar drug delivery systems. The success of the approach encourages including even more blood components, like lipoproteins, to a quantitative treatment.
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Affiliation(s)
- Leonie C. Vormittag
- Institute
of Pharmaceutical Sciences, University of
Freiburg, Hermann-Herder-Str. 9, 79104Freiburg, Germany
| | - Heiko Heerklotz
- Institute
of Pharmaceutical Sciences, University of
Freiburg, Hermann-Herder-Str. 9, 79104Freiburg, Germany
- Center
for Biological Signaling Studies (BIOSS), University of Freiburg, Schänzlestr. 18, 79104Freiburg, Germany
- Leslie
Dan Faculty of Pharmacy, University of Toronto, 144 College Street, Toronto, ONCanadaM5S 3M2
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4
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Kumari S, Chauhan S, Umar A, Fouad H, Akhtar MS. Conductometric and Fluorescence Probe Analysis to Investigate the Interaction between Bioactive Peptide and Bile Salts: A Micellar State Study. Molecules 2022; 27:7561. [PMID: 36364390 PMCID: PMC9654833 DOI: 10.3390/molecules27217561] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 10/30/2022] [Accepted: 10/31/2022] [Indexed: 09/29/2023] Open
Abstract
The present work deals with the micellar state study of sodium cholate and sodium deoxycholate in the aqueous solution of a bioactive peptide, namely glycyl dipeptide, having different concentrations through conductivity and fluorescence methods at different temperatures. The data obtained from conductivity is plotted against the concentration of Bile salts, and CMC (critical micelle concentration) values are calculated. The results realized have been elucidated with reference to Glycyl dipeptide-bile salts hydrophobic/hydrophilic interactions existing in solution. In addition, the CMC values converted to mole fraction (Xcmc) values have been used to evaluate the standard thermodynamic factors of micellization viz., enthalpy H, free energy ΔGm0, and entropy (ΔSm0) which extract information regarding thermodynamic feasibility of micellar state, energy alteration, and the assorted interactions established in the existing (bile salts-water-glycyl dipeptide) system. Furthermore, the pyrene fluorescence spectrum has also been utilized to study the change in micro polarity induced by the interactions of bile salts with glycyl dipeptide and the aggregation action of bile salts. The decrease in modification in the ratio of intensities of first and third peaks i.e., (I1/I3) for the pyrene molecules in aqueous bile salts solution by the addition of dipeptide, demonstrates that the micelle polarity is affected by glycyl dipeptide. This ratio has also been utilized to determine CMC values for the studied system, and the results have been found to be in good correlation with observations made in conductivity studies.
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Affiliation(s)
- Santosh Kumari
- Department of Chemistry, Himachal Pradesh University, Summer Hill, Shimla 171005, India
| | - Suvarcha Chauhan
- Department of Chemistry, Himachal Pradesh University, Summer Hill, Shimla 171005, India
| | - Ahmad Umar
- Department of Chemistry, College of Science and Arts, Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran 11001, Saudi Arabia
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA
| | - Hassan Fouad
- Applied Medical Science Department, Community College, King Saud University, Riyadh 11433, Saudi Arabia
| | - Mohammad Shaheer Akhtar
- School of Semiconductor and Chemical Engineering, Jeonbuk National University, Jeonju 54896, Korea
- Graduate School of Integrated Energy-AI, Jeonbuk National University, Jeonju 54896, Korea
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5
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Patel HS, Shaikh SJ, Ray D, Aswal VK, Vaidya F, Pathak C, Varade D, Rahdar A, Sharma RK. Structural transitions in mixed Phosphatidylcholine/Pluronic micellar systems and their in vitro therapeutic evaluation for poorly water-soluble drug. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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6
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Chakrabarti C, Malek N, Ray D, Aswal VK, Pillai SA. A meticulous study on the interaction of bile salts with star block copolymeric micelles. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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7
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Jebastin K, Narayanasamy D. Rationale utilization of phospholipid excipients: a distinctive tool for progressing state of the art in research of emerging drug carriers. J Liposome Res 2022; 33:1-33. [PMID: 35543241 DOI: 10.1080/08982104.2022.2069809] [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: 10/18/2022]
Abstract
Phospholipids have a high degree of biocompatibility and are deemed ideal pharmaceutical excipients in the development of lipid-based drug delivery systems, because of their unique features (permeation, solubility enhancer, emulsion stabilizer, micelle forming agent, and the key excipients in solid dispersions) they can be used in a variety of pharmaceutical drug delivery systems, such as liposomes, phytosomes, solid lipid nanoparticles, etc. The primary usage of phospholipids in a colloidal pharmaceutical formulation is to enhance the drug's bioavailability with low aqueous solubility [i.e. Biopharmaceutical Classification System (BCS) Class II drugs], Membrane penetration (i.e. BCS Class III drugs), drug uptake and release enhancement or modification, protection of sensitive active pharmaceutical ingredients (APIs) from gastrointestinal degradation, a decrease of gastrointestinal adverse effects, and even masking of the bitter taste of orally delivered drugs are other uses. Phospholipid-based colloidal drug products can be tailored to address a wide variety of product requirements, including administration methods, cost, product stability, toxicity, and efficacy. Such formulations that are also a cost-effective method for developing medications for topical, oral, pulmonary, or parenteral administration. The originality of this review work is that we comprehensively evaluated the unique properties and special aspects of phospholipids and summarized how the individual phospholipids can be utilized in various types of lipid-based drug delivery systems, as well as listing newly marketed lipid-based products, patents, and continuing clinical trials of phospholipid-based therapeutic products. This review would be helpful for researchers responsible for formulation development and research into novel colloidal phospholipid-based drug delivery systems.
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Affiliation(s)
- Koilpillai Jebastin
- Department of Pharmaceutics, SRM College of Pharmacy, SRM Institute of Science and Technology, Kattankulathur, India
| | - Damodharan Narayanasamy
- Department of Pharmaceutics, SRM College of Pharmacy, SRM Institute of Science and Technology, Kattankulathur, India
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8
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Moyano Rodríguez E, Gomez-Mendoza M, Pérez-Ruiz R, Peñín B, Sampedro D, Caamaño A, de la Peña O’Shea VA. Controlled Synthesis of Up-Conversion NaYF 4:Yb,Tm Nanoparticles for Drug Release under Near IR-Light Therapy. Biomedicines 2021; 9:1953. [PMID: 34944769 PMCID: PMC8699023 DOI: 10.3390/biomedicines9121953] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 12/03/2021] [Accepted: 12/07/2021] [Indexed: 11/16/2022] Open
Abstract
Up-Conversion materials have received great attention in drug delivery applications in recent years. A specifically emerging field includes the development of strategies focusing on photon processes that promote the development of novel platforms for the efficient transport and the controlled release of drug molecules in the harsh microenvironment. Here, modified reaction time, thermal treatment, and pH conditions were controlled in the synthesis of NaYF4:Yb,Tm up-converted (UC) material to improve its photoluminescence properties. The best blue-emission performance was achieved for the UC3 sample prepared through 24 h-synthesis without thermal treatment at a pH of 5, which promotes the presence of the β-phase and smaller particle size. NaYF4:Yb,Tm has resulted in a highly efficient blue emitter material for light-driven drug release under near-IR wavelength. Thus, NaYF4:Yb,Tm up-converted material promotes the N-O bond cleavage of the oxime ester of Ciprofloxacin (prodrug) as a highly efficient photosensitized drug delivery process. HPLC chromatography and transient absorption spectroscopy measurements were performed to evaluate the drug release conversion rate. UC3 has resulted in a very stable and easily recovered material that can be used in several reaction cycles. This straightforward methodology can be extended to other drugs containing photoactive chromophores and is present as an alternative for drug release systems.
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Affiliation(s)
- Edelweiss Moyano Rodríguez
- Signal Theory and Communications and Telematic System and Computing, Rey Juan Carlos University, Cam/del Molino 5, 28942 Madrid, Spain;
- Photoactivated Processes Unit, IMDEA Energy Institute, C/Ramón de la Sagra, 3, 28935 Madrid, Spain; (M.G.-M.); (R.P.-R.)
| | - Miguel Gomez-Mendoza
- Photoactivated Processes Unit, IMDEA Energy Institute, C/Ramón de la Sagra, 3, 28935 Madrid, Spain; (M.G.-M.); (R.P.-R.)
| | - Raúl Pérez-Ruiz
- Photoactivated Processes Unit, IMDEA Energy Institute, C/Ramón de la Sagra, 3, 28935 Madrid, Spain; (M.G.-M.); (R.P.-R.)
- Departamento de Química, Universitat Politècnica de València, Camino de Vera S/N, 46022 Valencia, Spain
| | - Beatriz Peñín
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Madre de Dios 53, 26006 Logroño, Spain; (B.P.); (D.S.)
| | - Diego Sampedro
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Madre de Dios 53, 26006 Logroño, Spain; (B.P.); (D.S.)
| | - Antonio Caamaño
- Signal Theory and Communications and Telematic System and Computing, Rey Juan Carlos University, Cam/del Molino 5, 28942 Madrid, Spain;
| | - Víctor A. de la Peña O’Shea
- Photoactivated Processes Unit, IMDEA Energy Institute, C/Ramón de la Sagra, 3, 28935 Madrid, Spain; (M.G.-M.); (R.P.-R.)
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9
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Nawaz HA, Schröck K, Schmid M, Krieghoff J, Maqsood I, Kascholke C, Kohn-Polster C, Schulz-Siegmund M, Hacker MC. Injectable oligomer-cross-linked gelatine hydrogels via anhydride-amine-conjugation. J Mater Chem B 2021; 9:2295-2307. [PMID: 33616150 DOI: 10.1039/d0tb02861d] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Injectable gelatine-based hydrogels are valuable tools for drug and cell delivery due to their extracellular matrix-like properties that can be adjusted by the degree of cross-linking. We have established anhydride-containing oligomers for the cross-linking of gelatine via anhydride-amine-conjugation. So far, this conversion required conditions not compatible with cell encapsulation or in vivo injection. In order to overcome this limitation, we developed an array of quarter-oligomers varying in comonomer composition and contents of reactive anhydride units reactive towards amine groups under physiological conditions. The oligomers were of low molecular weight (Mn < 5 kDa) with a high degree of chemically intact anhydrides. Chemical comonomer composition was determined by 1H-NMR. Dissolutions experiments confirmed improved hydrophilicity of the synthesized oligomers over our established compositions. Injectable formulations are described utilizing cytocompatible concentrations of constituent materials and proton-scavenging base. Degree of cross-linking and stiffness of injectable hydrogels were controlled by composition. The gels hold promise as injectable drug or cell carrier and as bioink.
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Affiliation(s)
- Hafiz Awais Nawaz
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany and Institute of Pharmaceutical Sciences (IPS), University of Veterinary & Animal Sciences (UVAS), Abdul Qadir Jillani road, Lahore, Pakistan
| | - Kathleen Schröck
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Maximilian Schmid
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Jan Krieghoff
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Iram Maqsood
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Christian Kascholke
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Caroline Kohn-Polster
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Michaela Schulz-Siegmund
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Michael C Hacker
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany and Institute of Pharmaceutics and Biopharmaceutics, Heinrich-Heine-Universität, Universitätsstraße 1, Düsseldorf, 40225 Düsseldorf, Germany.
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10
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Self-assembled phospholipid-based mixed micelles for improving the solubility, bioavailability and anticancer activity of lenvatinib. Colloids Surf B Biointerfaces 2021; 201:111644. [PMID: 33639512 DOI: 10.1016/j.colsurfb.2021.111644] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 01/05/2021] [Accepted: 02/13/2021] [Indexed: 01/09/2023]
Abstract
The clinical efficacy of lenvatinib (LFT) is limited by its poor aqueous solubility and low bioavailability. In this work, LFT-loaded soy phospholipid and sodium glycocholate mixed micelles (LFT-MMs) were prepared through classical co-precipitation. And it was served as an oral administration to address these shortcomings. The preparation conditions were optimized by single-factor experiments. The mass ratio of PC, SGC and LFT, and the species of dispersing media were proved to be decisive factors in controlling the properties of LFT-MMs. The optimal LFT-MMs presented prominent enhancement (500-fold) in LFT solubility, high encapsulation efficiency (87.6 %) as well as suitable stability (>1 month at 4 °C). The biocompatibility of LFT-MMs was estimated by in vitro serum stability measurement and hemolysis test. It showed that serum proteins hardly adhered to the surface of LFT-MMs, and insignificant hemolytic rate (<0.5 %) was observed at the micelles concentration below 1 mg/mL. Cytotoxicity test (MTT assay) was carried out to judge the in vitro antitumor activity. LFT-MMs showed an enhanced inhibitory activity against two main kinds of differentiated thyroid cancer cells over LFT and LFT Mesylate. To estimate the in vivo oral bioavailability of LFT-MMs, SD rats were used as animal model. Notably, the relative bioavailability of LFT-MMs compared with the original form of LFT was 176.7 %. These superior characteristics indicated that the mixed micelles are promising water-soluble formulations suitable for LFT oral delivery.
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11
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Drescher S, van Hoogevest P. The Phospholipid Research Center: Current Research in Phospholipids and Their Use in Drug Delivery. Pharmaceutics 2020; 12:pharmaceutics12121235. [PMID: 33353254 PMCID: PMC7766331 DOI: 10.3390/pharmaceutics12121235] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 12/11/2020] [Accepted: 12/14/2020] [Indexed: 12/16/2022] Open
Abstract
This review summarizes the research on phospholipids and their use for drug delivery related to the Phospholipid Research Center Heidelberg (PRC). The focus is on projects that have been approved by the PRC since 2017 and are currently still ongoing or have recently been completed. The different projects cover all facets of phospholipid research, from basic to applied research, including the use of phospholipids in different administration forms such as liposomes, mixed micelles, emulsions, and extrudates, up to industrial application-oriented research. These projects also include all routes of administration, namely parenteral, oral, and topical. With this review we would like to highlight possible future research directions, including a short introduction into the world of phospholipids.
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12
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Arce FA, Setiawan N, Campbell HR, Lu X, Nethercott MJ, Bummer P, Su Y, Marsac PJ. Toward Developing Discriminating Dissolution Methods for Formulations Containing Nanoparticulates in Solution: The Impact of Particle Drift and Drug Activity in Solution. Mol Pharm 2020; 17:4125-4140. [PMID: 32965123 DOI: 10.1021/acs.molpharmaceut.0c00599] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Enabling formulations are an attractive approach to increase the dissolution rate, solubility, and oral bioavailability of poorly soluble compounds. With the growing prevalence of poorly soluble drug compounds in the pharmaceutical pipeline, supersaturating drug delivery systems (SDDS), a subset of enabling formulations, have grown in popularity due to their properties allowing for drug concentrations greater than the corresponding crystalline solubility. However, the extent of supersaturation generated as the enabling formulation traverses the gastrointestinal (GI) tract is dynamic and poorly understood. The dynamic nature of supersaturation is a result of several competing kinetic processes such as dissolution, solubilization by formulation and endogenous surfactants, crystallization, and absorption. Ultimately, the free drug concentration, which is equivalent to the drug's inherent thermodynamic activity amid these kinetic processes, defines the true driving force for drug absorption. However, in cases where solubilizing agents are present (i.e., surfactants and bile salts), drug molecules may associate with colloidal nanoscale species, complicating drug activity determination. These nanoscale species can drift into the aqueous boundary layer (ABL), increasing the local API activity at the membrane surface, resulting in increased bioavailability. Herein, a novel approach was developed to accurately measure thermodynamic drug activity in complex media containing drug distributed in nanoparticulate species. This approach captures the influence of the ABL on the observed flux and, ultimately, the predicted unbound drug concentration. The results demonstrate that this approach can help to (1) measure the true extent of local supersaturation in complex systems containing solubilizing excipients and (2) elucidate the mechanisms by which colloidal aggregates can modulate the drug activity in solution and potentially enhance the flux observed across a membrane. The utilization of these techniques may provide development scientists with a strategy to evaluate formulation sensitivity to nanospeciation and allow formulators to maximize the driving force for absorption in a complex environment, perhaps enabling the development of dissolution methods with greater discrimination and correlation to pre-clinical and clinical data sets.
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Affiliation(s)
- Freddy A Arce
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Nico Setiawan
- Albany Molecular Research Inc., West Lafayette, Indiana 47906, United States
| | - Heather R Campbell
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Xingyu Lu
- Pharmaceutical Sciences, Merck & Co., Kenilworth, New Jersey 07033, United States.,Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, Hangzhou, Zhejiang 310024, China
| | | | - Paul Bummer
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Yongchao Su
- Pharmaceutical Sciences, Merck & Co., Kenilworth, New Jersey 07033, United States.,Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, Texas 78712, United States.,Department of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University, West Lafayette, Indiana 47907, United States
| | - Patrick J Marsac
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
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13
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Pramod K, Kotta S, Jijith US, Aravind A, Abu Tahir M, Manju CS, Gangadharappa HV. Surfactant-based prophylaxis and therapy against COVID-19: A possibility. Med Hypotheses 2020; 143:110081. [PMID: 32653736 PMCID: PMC7340033 DOI: 10.1016/j.mehy.2020.110081] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 05/06/2020] [Accepted: 07/03/2020] [Indexed: 12/17/2022]
Abstract
Hand hygiene by washing with soap and water is recommended for the prevention of COVID-19 spread. Soaps and detergents are explained to act by damaging viral spike glycoproteins (peplomers) or by washing out the virus through entrapment in the micelles. Technically, soaps come under a functional category of molecules known as surfactants. Surfactants are widely used in pharmaceutical formulations as excipients. We wonder why surfactants are still not tried for prophylaxis or therapy against COVID-19? That too when many of them have proven antiviral properties. Moreover, lung surfactants have already shown benefits in respiratory viral infections. Therefore, we postulate that surfactant-based prophylaxis and therapy would be promising. We believe that our hypothesis would stimulate debate or new research exploring the possibility of surfactant-based prophylaxis and therapy against COVID-19. The success of a surfactant-based technique would save the world from any such pandemic in the future too.
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Affiliation(s)
- K Pramod
- College of Pharmaceutical Sciences, Govt. Medical College, Kozhikode, Kerala, India.
| | - Sabna Kotta
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Saudi Arabia
| | - U S Jijith
- College of Pharmaceutical Sciences, Govt. Medical College, Kozhikode, Kerala, India
| | - A Aravind
- College of Pharmaceutical Sciences, Govt. Medical College, Thiruvananthapuram, Kerala, India
| | - M Abu Tahir
- Formulation & Development, Steril-gene Life Sciences, Puducherry, India
| | - C S Manju
- College of Pharmaceutical Sciences, Govt. Medical College, Kozhikode, Kerala, India
| | - H V Gangadharappa
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Sri Shivarathreshwara Nagar, Bannimantap, Mysuru 570015, Karnataka, India
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14
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Ideguchi H, Takasaki Y, Kondo S, Nakanose M, Teradahira N, Yamamoto Y, Mouri U, Nakahara H. Solubilization of Progesterone and its Derivatives into Gemini Surfactant Solutions. J Oleo Sci 2020; 69:557-562. [PMID: 32404550 DOI: 10.5650/jos.ess20007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The solubilization of poorly water-soluble progesterone derivatives into micelles of a gemini surfactant was investigated in an aqueous medium. The aqueous solubility at different temperatures was determined spectroscopically using an ultraviolet visible light spectrophotometer. Thermodynamic parameters for the solubilization were calculated under the basis of the solubility change against temperature. The solubility of progesterone was quite low and remained constant below the critical micelle concentration (cmc) of the surfactant. On the other hand, the solubility increased considerably with increasing surfactant concentration above the cmc. It was suggested that the solubilizates were located in the vicinity of polar regions of micelles.
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Affiliation(s)
- Hiroki Ideguchi
- Department of Industrial Pharmacy, Daiichi University of Pharmacy
| | - Yuya Takasaki
- Department of Industrial Pharmacy, Daiichi University of Pharmacy
| | - Shintaro Kondo
- Department of Industrial Pharmacy, Daiichi University of Pharmacy
| | - Mai Nakanose
- Department of Industrial Pharmacy, Daiichi University of Pharmacy
| | - Nana Teradahira
- Department of Industrial Pharmacy, Daiichi University of Pharmacy
| | - Yumeka Yamamoto
- Department of Industrial Pharmacy, Daiichi University of Pharmacy
| | - Umi Mouri
- Department of Industrial Pharmacy, Daiichi University of Pharmacy
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15
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Takeda K, Fujimoto K, Yoshii N, Okazaki S. Molecular dynamics study of solubilization of cyclohexane, benzene, and phenol into mixed micelles composed of sodium dodecyl sulfate and octaethylene glycol monododecyl ether. J Comput Chem 2019; 40:2722-2729. [PMID: 31429106 DOI: 10.1002/jcc.26047] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 07/24/2019] [Accepted: 07/30/2019] [Indexed: 02/04/2023]
Abstract
Molecular dynamics calculations of a mixed micelle composed of sodium dodecyl sulfate (SDS) and octaethylene glycol monododecyl ether (C12 E8 ) were performed for six compositions (SDS/C12 E8 = 100/0, 80/20, 60/40, 40/60, 20/80, and 0/100) to investigate the composition dependence of the mixed micelle structure and solubilization of cyclohexane, benzene, and phenol molecules by the micelle. The radial density distribution of the hydrophilic polyoxyethylene (POE) group of C12 E8 as a function of distance from the micelle center is very sharp for micelles with high SDS content because the POE group captures a Na+ ion in solution and wraps around it to form a compact crown-ether-like complex. The hydrophobic dodecyl groups of SDS and C12 E8 were separately distributed in the mixed micelle core. ΔG(r) evaluated for each solute showed that despite the structural changes of the micelle the binding strength of the solute molecules to the micelle did not change significantly. © 2019 Wiley Periodicals, Inc.
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Affiliation(s)
- Kosuke Takeda
- Analytical Science Research Laboratories, Kao Corporation, 1334 Minato, Wakayama-Shi Wakayama, 640-8580, Japan.,Department of Materials Chemistry, Nagoya University, Furo-Cho, Chikusa-Ku, Nagoya, Aichi, 464-8603, Japan
| | - Kazushi Fujimoto
- Department of Materials Chemistry, Nagoya University, Furo-Cho, Chikusa-Ku, Nagoya, Aichi, 464-8603, Japan
| | - Noriyuki Yoshii
- Department of Materials Chemistry, Nagoya University, Furo-Cho, Chikusa-Ku, Nagoya, Aichi, 464-8603, Japan.,Center for Computational Science, Graduate School of Engineering, Nagoya University, Furo-Cho, Chikusa-Ku, Nagoya, Aichi, 464-8603, Japan
| | - Susumu Okazaki
- Department of Materials Chemistry, Nagoya University, Furo-Cho, Chikusa-Ku, Nagoya, Aichi, 464-8603, Japan.,Center for Computational Science, Graduate School of Engineering, Nagoya University, Furo-Cho, Chikusa-Ku, Nagoya, Aichi, 464-8603, Japan
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16
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Elkhabaz A, Moseson DE, Brouwers J, Augustijns P, Taylor LS. Interplay of Supersaturation and Solubilization: Lack of Correlation between Concentration-Based Supersaturation Measurements and Membrane Transport Rates in Simulated and Aspirated Human Fluids. Mol Pharm 2019; 16:5042-5053. [PMID: 31638397 DOI: 10.1021/acs.molpharmaceut.9b00956] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Supersaturating formulations are increasingly being used to improve the absorption of orally administered poorly water-soluble drugs. To better predict outcomes in vivo, we must be able to accurately determine the degree of supersaturation in complex media designed to provide a surrogate for the gastrointestinal environment. Herein, we demonstrate that relying on measurements based on consideration of the total dissolved concentration leads to underestimation of supersaturation and consequently membrane transport rates. Crystalline and amorphous solubilities of two compounds, atazanavir and posaconazole, were evaluated in six different media. Concurrently, diffusive flux measurements were performed in a side-by-side diffusion cell to determine the activity-based supersaturation by evaluating membrane transport rates at the crystalline and amorphous solubilities. Solubility values were found to vary in each medium because of different solubilization capacities. Concentration-based supersaturation ratios were also found to vary for the different media. Activity-based measurements, however, were largely independent of the medium, leading to relatively constant values for the estimated supersaturation. These findings have important consequences for modeling and prediction of supersaturation impact on the absorption rate as well as for better defining the thermodynamic driving force for crystallization in complex media.
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Affiliation(s)
- Ahmed Elkhabaz
- Department of Industrial and Physical Pharmacy, College of Pharmacy , Purdue University , West Lafayette , Indiana 47907 , United States
| | - Dana E Moseson
- Department of Industrial and Physical Pharmacy, College of Pharmacy , Purdue University , West Lafayette , Indiana 47907 , United States
| | - Joachim Brouwers
- Drug Delivery and Disposition , KU Leuven , Leuven 3000 , Belgium
| | | | - Lynne S Taylor
- Department of Industrial and Physical Pharmacy, College of Pharmacy , Purdue University , West Lafayette , Indiana 47907 , United States
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17
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Wang T, Shen L, Sun L, Zhang Y, Li H, Wang Y, Quan D. Why is glycocholic acid sodium salt better than deoxycholic acid sodium salt for the preparation of mixed micelle injections? Food Sci Nutr 2019; 7:3675-3680. [PMID: 31763016 PMCID: PMC6848834 DOI: 10.1002/fsn3.1224] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 01/09/2019] [Accepted: 01/17/2019] [Indexed: 11/10/2022] Open
Abstract
Classical mixed micelle systems make excellent parenteral drug carriers for lipophilic or poorly soluble drugs, but many formulations details are not fully understood and need further study. Thus, we constructed mixed micelle systems with lecithin and either glycocholic acid sodium salt or deoxycholic acid sodium salt in order to investigate the differences between the bile salts. Vitamin K1, a lipid-soluble drug, was encapsulated in the mixed micelles, and the influence of bile salts on the quality and stability of the mixed micelle systems was analyzed. Both bile salts displayed similar profiles, and the amounts of bile salts used in formulating clear solutions did not differ. Mixed micelle systems formed from glycocholic acid sodium were physically stable at low pH levels (5.5), whereas those formed from deoxycholic acid required higher pH (>8.5). High pH levels hurt active pharmaceutical ingredients that are prone to hydrolytic and oxidative degradation. Hence, when mixed micelle systems formed from deoxycholic acid sodium were sterilized, unexpected chemical unstability occurred. Therefore, we conclude that glycocholic acid sodium salt is more suitable than deoxycholic acid sodium salt for the preparation of mixed micelle injections.
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Affiliation(s)
- Tao Wang
- State Key Laboratory of Toxicology and Medical CountermeasureBeijing Institute of Pharmacology and ToxicologyBeijingChina
| | - Liao Shen
- State Key Laboratory of Toxicology and Medical CountermeasureBeijing Institute of Pharmacology and ToxicologyBeijingChina
| | | | - Yadan Zhang
- State Key Laboratory of Toxicology and Medical CountermeasureBeijing Institute of Pharmacology and ToxicologyBeijingChina
| | - Haiyan Li
- State Key Laboratory of Toxicology and Medical CountermeasureBeijing Institute of Pharmacology and ToxicologyBeijingChina
| | - Yongan Wang
- State Key Laboratory of Toxicology and Medical CountermeasureBeijing Institute of Pharmacology and ToxicologyBeijingChina
| | - Dongqin Quan
- State Key Laboratory of Toxicology and Medical CountermeasureBeijing Institute of Pharmacology and ToxicologyBeijingChina
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18
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Wang P, Cao X, Chu Y, Wang P. Ginkgolides-loaded soybean phospholipid-stabilized nanosuspension with improved storage stability and in vivo bioavailability. Colloids Surf B Biointerfaces 2019; 181:910-917. [PMID: 31382340 DOI: 10.1016/j.colsurfb.2019.06.050] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 05/31/2019] [Accepted: 06/22/2019] [Indexed: 10/26/2022]
Abstract
The purpose of this study was to investigate the effects of soybean phospholipid, as a steric stabilizer, on improving dissolution rate, storage stability and bioavailability of ginkgolides. The ginkgolides coarse powder, hydroxypropyl methylcellulose (HPMC), soybean phospholipid and sodium dodecyl sulfate (SDS) were mixed and wet-milled to prepare nanosuspension S1. Nanosuspension S2 was obtained by the same technique except adding the soybean phospholipid. Results of particle size showed that particle size (D50) of S1 significantly decreased from 44.25 μm to 0.373 μm. Results of differential scanning calorimetry (DSC), powder X-ray diffraction (PXRD) and transmission electron microscope (TEM) showed that ginkgolides in nanosuspension still maintained its crystallinity, and the nanoparticles were all nearly circular and uniformly dispersed. Then, pellets F1 and F2 were prepared by layering S1 and S2 onto the microcrystalline cellulose (MCC) spheres, respectively. The dissolution rate of ginkgolide A (GA) and ginkgolide B (GB) in F1 was 98.3% and 97.7% in 30 min, respectively. It was much higher than F2 (89.0% and 86.5%) and coarse powder of ginkgolides (22.3% and 24.6%). According to the results of stability test, the storage stability of F1 was improved compared with F2. In addition, compared with coarse powder of ginkgolides, the relative bioavailability of GA and GB in F1 were up to (221.84 ± 106.67) % and (437.45 ± 336.43) %, respectively. The above results demonstrated that soybean phospholipid added to the nanosuspension played an important role in improving drug dissolution rate, storage stability and in vivo bioavailability: (1) The amphiphilic soybean phospholipid interacted with the drug, with the hydrophobic part adsorbed on the surface of the poorly soluble drug and the hydrophilic part exposed to the aqueous medium. This increases the wettability of the nanoparticles, which ensure a good redispersibility of the drug particles. (2) It could self-assemble to form an interfacial phospholipid film by surrounding the individual nanoparticles, which can produce enough steric hindrance to prevent nanoparticles from aggregation and ensure a rapid dissolution rate. (3) Soybean phospholipid and its hydrolysate formed strong micellar solubilizing vehicles with bile salts in vivo, stimulated the absorption process of ginkgolides. Thus, soybean phospholipid was a promising steric stabilizer in nanosuspension drug delivery system.
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Affiliation(s)
- Puxiu Wang
- Department of Pharmacy, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, PR China.
| | - Xiuxiu Cao
- School of Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, Liaoning, PR China.
| | - Yang Chu
- Department of Pharmacy, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, PR China.
| | - Puxiu Wang
- Department of Pharmacy, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, PR China.
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19
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Amaral Silva D, Al-Gousous J, Davies NM, Bou Chacra N, Webster GK, Lipka E, Amidon G, Löbenberg R. Simulated, biorelevant, clinically relevant or physiologically relevant dissolution media: The hidden role of bicarbonate buffer. Eur J Pharm Biopharm 2019; 142:8-19. [PMID: 31195131 DOI: 10.1016/j.ejpb.2019.06.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 06/04/2019] [Accepted: 06/08/2019] [Indexed: 01/15/2023]
Abstract
In-vitro dissolution testing of pharmaceutical formulations has been used as a quality control test for many years. At early drug product development, in vivo predictive dissolution testing can be used for guidance in the rational selection of candidate formulations that best fit the desired in vivo dissolution characteristics. At present, the most widely applied dissolution media are phosphate-based buffers and, in some cases, the result of dissolution tests performed in such media have demonstrated reasonable/acceptable IVIVCs. However, the presence of phosphates in human GI luminal fluids is insignificant, which makes the use of such media poorly representative of the in vivo environment. The gastrointestinal lumen has long been shown to be buffered by bicarbonate. Hence, much interest in the development of suitable biorelevant in vitro dissolution media based on bicarbonate buffer systems has evolved. However, there are inherent difficulties associated with these buffers, such as maintaining the pH throughout the dissolution test, as CO2 tends to leave the system. Various mathematical models have been proposed to analyze bicarbonate buffers and they are discussed in this review. Approaches such as using simpler buffer systems instead of bicarbonate have been proposed as surrogate buffers to produce an equivalent buffer effect on drug dissolution on a case-by-case basis. There are many drawbacks related to simpler buffers systems including their poor in vivo predictability. Considerable discrepancies between phosphate and bicarbonate buffer dissolution results have been reported for certain dosage forms, e.g. enteric coated formulations. The role and need of bicarbonate-based buffers in quality control testing requires scientific analysis. This review also encompasses on the use of bicarbonate-based buffers as a potentially in vivo predictive dissolution medium for enteric coated dosage forms.
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Affiliation(s)
- Daniela Amaral Silva
- Faculty of Pharmacy & Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Jozef Al-Gousous
- College of Pharmacy, University of Michigan, Ann Arbor, MI, United States
| | - Neal M Davies
- Faculty of Pharmacy & Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Nadia Bou Chacra
- Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, SP, Brazil
| | - Gregory K Webster
- Research and Development, AbbVie Inc., North Chicago, IL, United States
| | | | - Gordon Amidon
- College of Pharmacy, University of Michigan, Ann Arbor, MI, United States
| | - Raimar Löbenberg
- Faculty of Pharmacy & Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada.
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20
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Li Y, Zhang T, Liu Q, Zhang J, Li R, Pu S, Wu T, Ma L, He J. Mixed micelles loaded with the 5-benzylidenethiazolidine-2,4-dione derivative SKLB023 for efficient treatment of non-alcoholic steatohepatitis. Int J Nanomedicine 2019; 14:3943-3953. [PMID: 31239664 PMCID: PMC6551597 DOI: 10.2147/ijn.s202821] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 05/03/2019] [Indexed: 02/05/2023] Open
Abstract
Background: SKLB023, a novel 5-benzylidenethiazolidine-2,4-dione based-derivative, specifically inhibits inducible nitric oxide synthase and shows promise for treating non-alcoholic steatohepatitis (NASH). However, its poor water solubility and low bioavailability limits its clinical use. Here the drug was loaded into phosphatidylcholine-bile salt-mixed micelles (PBMM/SKLB023) to overcome these limitations. Methods: PBMM/SKLB023 was developed using a simple co-precipitation method, and formulation parameters were optimized. The pharmacokinetics of PBMM/SKLB023 were investigated in Wistar rats, and therapeutic efficacy was assessed in a mouse model of NASH induced by a diet deficient in methionine- and choline. Results: PBMM/SKLB023 particles were 11.36±2.08 nm based on dynamic light scattering, and loading the drug into micelles improved its water solubility 300-fold. PBMM/SKLB023 inhibited proliferation and activation of HSC-T6 cells more strongly than free SKLB023. PBMM/SKLB023 showed longer mean retention time and higher bioavailability than the free drug after intravenous injection in Wistar rats. In the mouse model of NASH, PBMM/SKLB023 alleviated hepatic lipid accumulation, inflammation, and fibrosis to a significantly greater extent than free SKLB023. Conclusion: PBMM/SKLB023 shows therapeutic potential for treating NASH and liver fibrosis.
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Affiliation(s)
- Yanping Li
- Laboratory of Clinical Pharmacy and Adverse Drug Reaction
| | | | - Qinhui Liu
- Laboratory of Clinical Pharmacy and Adverse Drug Reaction
| | - Jinhang Zhang
- Laboratory of Clinical Pharmacy and Adverse Drug Reaction
| | - Rui Li
- Laboratory of Clinical Pharmacy and Adverse Drug Reaction
| | - Shiyun Pu
- Laboratory of Clinical Pharmacy and Adverse Drug Reaction
| | - Tong Wu
- Laboratory of Clinical Pharmacy and Adverse Drug Reaction
| | - Liang Ma
- Division of Nephrology, Kidney Research Institute, Collaborative Innovation Center of Biotherapy, West China Hospital of Sichuan University, Chengdu610041, People’s Republic of China
| | - Jinhan He
- Laboratory of Clinical Pharmacy and Adverse Drug Reaction
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21
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Jo K, Cho JM, Lee H, Kim EK, Kim HC, Kim H, Lee J. Enhancement of Aqueous Solubility and Dissolution of Celecoxib through Phosphatidylcholine-Based Dispersion Systems Solidified with Adsorbent Carriers. Pharmaceutics 2018; 11:pharmaceutics11010001. [PMID: 30577564 PMCID: PMC6358979 DOI: 10.3390/pharmaceutics11010001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 12/18/2018] [Accepted: 12/19/2018] [Indexed: 01/25/2023] Open
Abstract
This study aimed to design phosphatidylcholine (PC)-based solid dispersion (SD) systems for enhancing the apparent aqueous solubility and dissolution of celecoxib (CLC), a selective cyclooxygenase-2 inhibitor with a highly hydrophobic property. Although PC-based dispersion formulations considerably increased solubilities of CLC, the lipidic texture of PC was not appropriate as a solid dosage form for oral administration of CLC. To mask the lipidic texture of PC-based matrices, Neusilin® US2, an adsorbent material with a porous structure and large surface area widely used in the pharmaceutical industry, was employed and thereby fully powderized PC-based dispersion formulations could be fabricated. However, PC matrices containing CLC strongly adsorbed to the pores of Neusilin® US2 was not able to be rapidly released. To address this problem, different hydrophilic materials were examined to promote the release of the CLC-dispersed PC matrices from Neusilin® US2. Among tested hydrophilic materials, croscarmellose sodium was the most suitable to facilitate fast drug dissolution from Neusilin® US2 particles, showing significantly enhanced apparent aqueous solubility and dissolution behavior of CLC. Through differential scanning calorimetry, X-ray diffraction, and Fourier transform infrared spectroscopy (FT-IR) analysis, a considerably reduced crystallinity of CLC dispersed in the PC-based dispersion formulations was demonstrated. The PC-based SD formulations developed in this study would be useful for improving the oral bioavailability of poorly soluble drugs such as CLC.
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Affiliation(s)
- Kanghee Jo
- College of Pharmacy, Chung-Ang University, Seoul 06974, Korea.
| | - Jae Min Cho
- College of Pharmacy, Chung-Ang University, Seoul 06974, Korea.
| | - Hyunjoo Lee
- College of Pharmacy, Chung-Ang University, Seoul 06974, Korea.
| | - Eun Kyung Kim
- Graduate School of Pharmaceutical Management, Chung-Ang University, Seoul 06974, Korea.
| | - Hong Chul Kim
- Graduate School of Pharmaceutical Management, Chung-Ang University, Seoul 06974, Korea.
| | - Hyeongmin Kim
- College of Pharmacy, Chung-Ang University, Seoul 06974, Korea.
| | - Jaehwi Lee
- College of Pharmacy, Chung-Ang University, Seoul 06974, Korea.
- Graduate School of Pharmaceutical Management, Chung-Ang University, Seoul 06974, Korea.
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22
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Chauhan S, Sharma V, Singh K, Chauhan M. Effect of Maltodextrin and Temperature on Micellar Behavior of Bile Salts in Aqueous Medium: Conductometric and Spectrofluorimetric Studies. Z PHYS CHEM 2018. [DOI: 10.1515/zpch-2017-1060] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Conductivity and fluorescence probe techniques have been employed to study the micellar behavior of bile salts i.e. sodium cholate (1–20 mmol⋅kg−1) and sodium deoxycholate (0.5–10.0 mmol⋅kg−1) in aqueous solutions of maltodextrin (0.0, 0.5, 1.1, and 1.6 mmol⋅kg−1) at different temperatures. The influence of maltodextrin on the micellization behavior of bile salts has been determined in terms of critical micelle concentration (CMC) values obtained from conductivity measurement. The variation in CMC values has been discussed by considering the alteration in the hydrophobic environment of maltodextrin-sodium cholate/sodium deoxycholate complex imparted by the carbohydrate molecules. In order to substantiate the CMC values determined from conductivity method, the fluorescence probe study of aqueous sodium cholate and sodium deoxycholate solutions in presence of fluorescent, pyrene has also been carried. The CMC values obtained from both techniques are in full agreement with each other. Moreover, application of charged pseudo-phase separation model has been made to discuss the thermodynamics of the system.
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Affiliation(s)
- Suvarcha Chauhan
- Department of Chemistry , Himachal Pradesh University , Summer Hill, Shimla 171005 , India , Tel.: +91 177 2830803, fax: +91 177 2830775
| | - Vivek Sharma
- Department of Chemistry , Himachal Pradesh University , Summer Hill, Shimla 171005 , India
| | - Kuldeep Singh
- Department of Chemistry , Himachal Pradesh University , Summer Hill, Shimla 171005 , India
| | - M.S. Chauhan
- Department of Chemistry , Himachal Pradesh University , Summer Hill, Shimla 171005 , India
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23
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Płaczek M, Wątróbska-Świetlikowska D, Stefanowicz-Hajduk J, Drechsler M, Ochocka JR, Sznitowska M. Comparison of the in vitro cytotoxicity among phospholipid-based parenteral drug delivery systems: Emulsions, liposomes and aqueous lecithin dispersions (WLDs). Eur J Pharm Sci 2018; 127:92-101. [PMID: 30342174 DOI: 10.1016/j.ejps.2018.10.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 09/12/2018] [Accepted: 10/16/2018] [Indexed: 12/31/2022]
Abstract
Lecithin and isolated phospholipids (mainly phosphatidylcholine) have been used for years as pharmaceutical excipients in parenteral formulations: submicron emulsions, liposomes and mixed micelles. Under development are also other lecithin-based drug delivery systems, e.g. aqueous lecithin dispersions (WLDs). The aim of the study was to investigate the properties and potential cytotoxicity of 7 different phospholipid-based dispersions intended for parenteral administration: emulsions, liposomes and WLDs. Each formulation contained egg phosphatidylcholine (PC) in the concentration range of 0.6-5.0%, and to some formulations other surfactants, such as polysorbate 80 (P80), Solutol HS 15 (HS) and cholesterol (Ch) were added. Particles in all dispersions were homogenous (PDI < 0.26) and submicron in size (Z-average in the range of approx. 100-260 nm). The cytotoxicity of all tested formulations was evaluated by means of 3 independent methods: a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, a real-time xCELLigence (RTCA) system, and a flow cytometry analysis, using two cell lines: human embryonic kidney 293 (HEK-293) and human promyelocytic leukaemia (HL-60). The results indicated that regardless of the test method and cell line type, the cytotoxicity of all formulations was low, especially when dispersions diluted to concentrations of =10% were tested. A more pronounced cytotoxic effect was noticed only for the following formulations: E-P80 (emulsion containing P80), WLD (unbuffered aqueous lecithin dispersion) and L-Ch (liposomes containing Ch), tested as less diluted (concentration 10% or 25%). IC50 values measured for these dispersions (on HL-60 cells) amounted to: 10.4 ± 0.5% (v/v), 14.4 ± 0.2% (v/v) and 24.2 ± 0.6% (v/v), respectively. Our investigation confirmed the biocompatibility of all tested phospholipid-based formulations: emulsions, liposomes and also newly-developed WLDs, which can be considered as safe parenteral drug carriers.
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Affiliation(s)
- Marcin Płaczek
- Department of Pharmaceutical Technology, Medical University of Gdansk, al. gen. J. Hallera 107, 80-416 Gdansk, Poland.
| | | | - Justyna Stefanowicz-Hajduk
- Department of Biology and Pharmaceutical Botany, Medical University of Gdansk, al. gen. J. Hallera 107, 80-416 Gdansk, Poland
| | - Markus Drechsler
- Bavarian Polymer Institute (BPI), Key Lab of Electron and Optical Microscopy, University of Bayreuth, Universitaetsstr. 30, 95440 Bayreuth, Germany
| | - Jadwiga Renata Ochocka
- Department of Biology and Pharmaceutical Botany, Medical University of Gdansk, al. gen. J. Hallera 107, 80-416 Gdansk, Poland
| | - Małgorzata Sznitowska
- Department of Pharmaceutical Technology, Medical University of Gdansk, al. gen. J. Hallera 107, 80-416 Gdansk, Poland
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24
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Wang M, Jiang J, Cai Y, Zhao M, Wu Q, Cui Y, Zhao C. In vitro
and in vivo
evaluation of a posaconazole-sulfobutyl ether-β
-cyclodextrin inclusion complex. Biomed Chromatogr 2018; 32:e4364. [DOI: 10.1002/bmc.4364] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 08/01/2018] [Accepted: 08/09/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Miao Wang
- Lizhu Group Lizhu Medicinal Research Institute; Zhuhai Guangdong Province China
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province China
| | - Juan Jiang
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province China
| | - Yi Cai
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province China
| | - Min Zhao
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province China
| | - Qijuan Wu
- Lizhu Group Lizhu Medicinal Research Institute; Zhuhai Guangdong Province China
| | - Yannan Cui
- Lizhu Group Lizhu Medicinal Research Institute; Zhuhai Guangdong Province China
| | - Chunjie Zhao
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province China
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25
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Crystallization from Supersaturated Solutions: Role of Lecithin and Composite Simulated Intestinal Fluid. Pharm Res 2018; 35:158. [DOI: 10.1007/s11095-018-2441-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 06/05/2018] [Indexed: 10/14/2022]
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26
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Stumpf F, Keck CM. Tablets made from paper. Int J Pharm 2018; 548:812-819. [PMID: 29859923 DOI: 10.1016/j.ijpharm.2018.05.071] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 05/20/2018] [Accepted: 05/31/2018] [Indexed: 11/25/2022]
Abstract
The possibility to compress ordinary paper into tablets was systematically investigated in this study. Results proved that tablets can be made from paper, independent of the type of paper used. The tablets appear shiny and with a smooth surface. The pharmaceutical quality was acceptable, i.e. all tablets fulfilled the requirements for tablets according to the European Pharmacopeia. Drug-loaded tablets were produced by compression of drug-loaded paper. Drug loading did not alter the pharmaceutical quality. However, the uncoated tablets possessed an extremely fast disintegration, i.e. intense swelling upon contact with water, which might hamper the swallowing after oral administration. To avoid swelling tablets were successfully coated with a polymer film, leading to a prevention of swelling but immediate disintegration in simulated gastric fluid. In fact, tablets made from paper are a novel and promising strategy for improved oral drug delivery. They can be easily produced without any further excipients and possess pharmaceutical quality according to the European Pharmacopeia.
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Affiliation(s)
- Florian Stumpf
- Department of Pharmaceutics and Biopharmaceutics, Philipps-Universität Marburg, Marburg, Germany
| | - Cornelia M Keck
- Department of Pharmaceutics and Biopharmaceutics, Philipps-Universität Marburg, Marburg, Germany.
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Mixed Micelles Loaded with Bile Salt: An Approach to Enhance Intestinal Transport of the BCS Class III Drug Cefotaxime in Rats. Eur J Drug Metab Pharmacokinet 2018; 42:635-645. [PMID: 27686853 DOI: 10.1007/s13318-016-0375-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
BACKGROUND AND OBJECTIVES Cefotaxime is a class III drug according to the Biopharmaceutical Classification System due to low intestinal permeability based on poor oral bioavailability. Bile salt compounds have been shown to be effective additive for drug permeation through several biological membranes. The main purpose of this study was to investigate the ability of a mixed micelles made of phosphatidylcholine, sodium deoxycholate, and loaded with a cefotaxime-3α,7α-dihydroxy-12-keto-5β-cholanate complex to enhance the oral bioavailability of cefotaxime in rats. METHODS Thin-film hydration method was used to prepare cefotaxime-loaded mixed micelles using different bile salt concentrations (0.87-25 mM of sodium deoxycholate). Overall, micelle sizes ranging from 86.9 to 155.6 nm were produced with negative zeta potential values from -15.9 to -19.5 mV and drug loading from 10.5 to 18.9 %. The oral bioavailability of cefotaxime in mixed micellar formulation was assessed and the pharmacokinetic parameters were compared with cefotaxime-3α,7α-dihydroxy-12-keto-5β-cholanate complex and cefotaxime aqueous solution. 24 Male Wistar rats were randomly allocated into four groups (n = 6, per group) to receive the following: (1) a single intravenous dose of cefotaxime (25 mg/kg) in sterilized normal saline solution for injection; (2) a single oral dose of mixed micelles (100 mg/kg of cefotaxime) in phosphate buffered saline administered by oral gavage; (3) a single oral dose of cefotaxime-3α,7α-dihydroxy-12-keto-5β-cholanate complex (100 mg/kg of cefotaxime) in phosphate buffered saline administered by oral gavage; (4) a single oral dose of free cefotaxime (100 mg/kg) in aqueous solution administered by oral gavage. Blood samples were collected for up to 24 h and cefotaxime analyzed using a validated HPLC assay. RESULTS Pharmacokinetic data showed that the oral bioavailability of cefotaxime in mixed micelles was found to be 4.91 % higher compared to the cefotaxime in aqueous solution (1.30 %). Maximum concentration (C max) of cefotaxime in mixed micellar formulation was higher (1.08 ± 0.1 µg/ml) compared to the cefotaxime-3α,7α-dihydroxy-12-keto-5β-cholanate complex (0.69 ± 0.1 µg/ml) and cefotaxime in aqueous solution (0.52 ± 0.1 µg/ml). Similarly, the mean values for area under the plasma concentration-time curve extrapolated to infinity (AUC0-∞) of cefotaxime in the mixed micellar formulation was higher (3.89 ± 0.9 μg·h/mL) compared to the cefotaxime-3α,7α-dihydroxy-12-keto-5β-cholanate complex (1.52 ± 0.2 μg·h/mL) and cefotaxime in aqueous solution (1.03 ± 0.4 μg·h/mL), respectively. CONCLUSION The mixed micellar formulation was able to increase the oral bioavailability of the BCS Class III drug cefotaxime up to fourfold by enhancing drug permeation through the mucosal membrane of the small intestine.
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Vinarov Z, Dobreva P, Tcholakova S. Effect of surfactant molecular structure on Progesterone solubilization. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2017.09.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Rodriguez-Muñiz GM, Gomez-Mendoza M, Nuin E, Andreu I, Marin ML, Miranda MA. "Snorkelling" vs. "diving" in mixed micelles probed by means of a molecular bathymeter. Org Biomol Chem 2017; 15:10281-10288. [PMID: 29186227 DOI: 10.1039/c7ob02595e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A photoactive bathymeter based on a carboxylic acid moiety covalently linked to a signalling methoxynaphthalene (MNP) fluorophore has been designed to prove the concept of "snorkelling" vs. "diving" in mixed micelles (MM). The carboxylic acid "floats" on the MM surface, while the MNP unit sinks deep in MM. The rate constants of MNP fluorescence quenching by iodide, which remains basically in water, consistently decrease with increasing spacer length, revealing different regions. This is associated with the distance MNP should "dive" in MM to achieve protection from aqueous reactants. Unequivocal proof of the exergonic photoinduced electron transfer was obtained from the UV-visible spectral signature of I3- upon steady-state photolysis. The applicability of the bathymeter was examined upon testing a family of MNP derivatives. The obtained results were validated by comparison with different lipophilicity tests: (i) a modified version of the Kow partition coefficient and (ii) the retention factor on thin layer chromatography. This concept could potentially be extended to test drugs or pharmacophores exhibiting any photoactive moiety.
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Affiliation(s)
- Gemma M Rodriguez-Muñiz
- Instituto Universitario Mixto de Tecnología Química (UPV-CSIC) Universitat Politècnica de València, Avda de los Naranjos s/n, 46022 Valencia, Spain
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Zhou Z, Dunn C, Khadra I, Wilson CG, Halbert GW. Influence of Physiological Gastrointestinal Surfactant Ratio on the Equilibrium Solubility of BCS Class II Drugs Investigated Using a Four Component Mixture Design. Mol Pharm 2017; 14:4132-4144. [PMID: 28749696 PMCID: PMC5717620 DOI: 10.1021/acs.molpharmaceut.7b00354] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Accepted: 07/27/2017] [Indexed: 12/21/2022]
Abstract
The absorption of poorly water-soluble drugs is influenced by the luminal gastrointestinal fluid content and composition, which control solubility. Simulated intestinal fluids have been introduced into dissolution testing including endogenous amphiphiles and digested lipids at physiological levels; however, in vivo individual variation exists in the concentrations of these components, which will alter drug absorption through an effect on solubility. The use of a factorial design of experiment and varying media by introducing different levels of bile, lecithin, and digested lipids has been previously reported, but here we investigate the solubility variation of poorly soluble drugs through more complex biorelevant amphiphile interactions. A four-component mixture design was conducted to understand the solubilization capacity and interactions of bile salt, lecithin, oleate, and monoglyceride with a constant total concentration (11.7 mM) but varying molar ratios. The equilibrium solubility of seven low solubility acidic (zafirlukast), basic (aprepitant, carvedilol), and neutral (fenofibrate, felodipine, griseofulvin, and spironolactone) drugs was investigated. Solubility results are comparable with literature values and also our own previously published design of experiment studies. Results indicate that solubilization is not a sum accumulation of individual amphiphile concentrations, but a drug specific effect through interactions of mixed amphiphile compositions with the drug. This is probably due to a combined interaction of drug characteristics; for example, lipophilicity, molecular shape, and ionization with amphiphile components, which can generate specific drug-micelle affinities. The proportion of each component can have a remarkable influence on solubility with, in some cases, the highest and lowest points close to each other. A single-point solubility measurement in a fixed composition simulated media or human intestinal fluid sample will therefore provide a value without knowledge of the surrounding solubility topography meaning that variability may be overlooked. This study has demonstrated how the amphiphile ratios influence drug solubility and highlights the importance of the envelope of physiological variation when simulating in vivo drug behavior.
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Affiliation(s)
- Zhou Zhou
- Strathclyde Institute of
Pharmacy and Biomedical Sciences, University
of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, United Kingdom
| | - Claire Dunn
- Strathclyde Institute of
Pharmacy and Biomedical Sciences, University
of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, United Kingdom
| | - Ibrahim Khadra
- Strathclyde Institute of
Pharmacy and Biomedical Sciences, University
of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, United Kingdom
| | - Clive G. Wilson
- Strathclyde Institute of
Pharmacy and Biomedical Sciences, University
of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, United Kingdom
| | - Gavin W. Halbert
- Strathclyde Institute of
Pharmacy and Biomedical Sciences, University
of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, United Kingdom
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Kaur S, Jena SK, Samal SK, Saini V, Sangamwar AT. Freeze dried solid dispersion of exemestane: A way to negate an aqueous solubility and oral bioavailability problems. Eur J Pharm Sci 2017; 107:54-61. [DOI: 10.1016/j.ejps.2017.06.032] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 06/07/2017] [Accepted: 06/25/2017] [Indexed: 12/18/2022]
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32
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Exploring drug solubility in fasted human intestinal fluid aspirates: Impact of inter-individual variability, sampling site and dilution. Int J Pharm 2017; 528:471-484. [DOI: 10.1016/j.ijpharm.2017.05.072] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 05/29/2017] [Accepted: 05/30/2017] [Indexed: 12/06/2022]
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33
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Fujimori M, Kadota K, Tozuka Y. Mixed Micelle System Produced by Interaction Between Transglycosylated Stevia and an Ionic Surfactant Improves Dissolution Profile of Mefenamic Acid. J Pharm Sci 2017; 106:1117-1123. [DOI: 10.1016/j.xphs.2016.12.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 09/22/2016] [Accepted: 12/16/2016] [Indexed: 11/25/2022]
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Impact of Micellar Surfactant on Supersaturation and Insight into Solubilization Mechanisms in Supersaturated Solutions of Atazanavir. Pharm Res 2017; 34:1276-1295. [DOI: 10.1007/s11095-017-2144-0] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 03/15/2017] [Indexed: 02/04/2023]
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35
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Guo Q, Cai J, Li P, Xu D, Ni X, Wen H, Liu D, Lin S, Hu H. Comparison of bile salt/phosphatidylcholine mixed micelles in solubilization to sterols and stability. DRUG DESIGN DEVELOPMENT AND THERAPY 2016; 10:3789-3798. [PMID: 27895469 PMCID: PMC5117881 DOI: 10.2147/dddt.s119918] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Androst-3β,5α,6β-triol (Triol) is a promising neuroprotective agent, but its poor solubility restricts its development into parenteral preparations. In this study, Triol is significantly solubilized by bile salt/phosphatidylcholine mixed micelles (BS/PC-MM). All BS/PC-MM systems are tested to remarkably improve the drug solubility with various stabilities after drug loading. Among them, the sodium glycocholate (SGC)/egg phosphatidylcholine (EPC) system with 2:1 ratio in weight and the total concentration of SGC and EPC of 100 mg/mL is proved to produce stable mixed micelles with high drug loading. It is found that the stability of drug-loaded mixed micelles is quite different, which might be related to the change in critical micelle concentration (CMC) after incorporating drugs. SGC/EPC and SGC/soya phosphatidylcholine (SPC) remain transparent under accelerated conditions and manifest a decreased CMC (dropping from 0.105 to 0.056 mg/mL and from 0.067 to 0.024 mg/mL, respectively). In contrast, swine bile acid-sodium salt (SBA-Na)/PC and sodium deoxycholate (SDC)/PC are accompanied by drug precipitation and reached the maximum CMC on the first and the third days, respectively. Interestingly, the variation of CMC under accelerated testing conditions highly matches the drug-precipitating event in the primary stability experiment. In brief, the bile salt/phosphatidylcholine system exists as a potential strategy of improving sterol drug solubility. CMC variation under accelerated testing conditions might be a simple and easy method to predict the stability of drug-loaded mixed micelles.
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Affiliation(s)
- Qin Guo
- School of Pharmaceutical Sciences, Sun Yat-sen University
| | - Jie Cai
- School of Pharmaceutical Sciences, Sun Yat-sen University; Guangzhou First People's Hospital, Guangzhou Medical University
| | - Pengyu Li
- School of Pharmaceutical Sciences, Sun Yat-sen University
| | - Dongling Xu
- School of Pharmaceutical Sciences, Sun Yat-sen University
| | - Xiaomin Ni
- School of Pharmaceutical Sciences, Sun Yat-sen University
| | - Hui Wen
- Guangzhou Cellprotek Pharmaceutical Co., Ltd., Science Park, Guangzhou, People's Republic of China
| | - Dan Liu
- Guangzhou Cellprotek Pharmaceutical Co., Ltd., Science Park, Guangzhou, People's Republic of China
| | - Suizhen Lin
- Guangzhou Cellprotek Pharmaceutical Co., Ltd., Science Park, Guangzhou, People's Republic of China
| | - Haiyan Hu
- School of Pharmaceutical Sciences, Sun Yat-sen University
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36
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Yu X, Xu H, Hu M, Luan X, Wang K, Fu Y, Zhang D, Li J. Ginsenoside Rg3 bile salt-phosphatidylcholine-based mixed micelles: design, characterization, and evaluation. Chem Pharm Bull (Tokyo) 2016; 63:361-8. [PMID: 25948329 DOI: 10.1248/cpb.c15-00045] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
20(R)-Ginsenoside Rg3 (G-Rg3) has good inhibition of tumor angiogenesis and anti-tumor effect. However, its poor aqueous solubility and liposolubility are not ideal for clinical applications. In this study, a G-Rg3 bile salt-phosphatidylcholine-based mixed micelle system (BS-PC-MMS) was prepared. The optimization of G-Rg3 BS-PC-MMS was carried out using response surface methodology based on a central composite design. The encapsulation efficiency (EE) and light transmission (LT) of the optimized formulation were 90.69±2.54% and 99.10±3.12%, respectively. The average particle size of micelles was 20 nm. To increase the stability of G-Rg3 BS-PC-MMS, the lyophilized formulation of micelles was prepared. The G-Rg3 BS-PC-MMS did not produce hemolysis of erythrocytes within a certain concentration range and exhibited a good inhibition of tumor cells. The chick embryo chorioallantoic membrane assay results showed that the G-Rg3 BS-PC-MMS significantly inhibited angiogenesis. The G-Rg3 BS-PC-MMS is thus shown to be a safe, stable, and promising drug delivery system.
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Affiliation(s)
- Xiu Yu
- College of Chemistry and Chemical Engineering, Liaoning Normal University
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Hwang SR, Kim IJ, Park JW. Formulations of deoxycholic for therapy: a patent review (2011 – 2014). Expert Opin Ther Pat 2015; 25:1423-40. [DOI: 10.1517/13543776.2016.1102888] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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38
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Turino LN, Mariano RN, Mengatto LN, Luna JA. In vitro evaluation of suspoemulsions for in situ-forming polymeric microspheres and controlled release of progesterone. J Microencapsul 2015. [PMID: 26218541 DOI: 10.3109/02652048.2015.1065914] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
One possibility to obtain a higher dose of drug in a lower formulation volume can be by using of saturated quantity of drug in one of the phases of an emulsion. These formulations are called suspoemulsions (S/O/W). When a hydrophobic polymer is added to the organic phase of suspoemulsions, these formulations can be used to entrap the drug inside microspheres after in situ precipitation of the polymer-drug-excipients mix. In this work, performance and stability of progesterone suspensions in triacetin as organic phase of suspoemulsions were evaluated. These formulations were compared with O/W emulsions. Mathematical models were used to study in vitro release profiles. The results confirmed that S/O/W systems could be an attractive alternative to O/W formulations for the entrapment of progesterone inside poly(d,l-lactide-co-glycolide) microspheres. Diffusive-based models fit the in vitro release of progesterone from in situ-formed microspheres. For longer release periods, a time-dependent diffusion coefficient was successfully estimated.
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Affiliation(s)
- Ludmila N Turino
- a Laboratorio de Química Fina , Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), Universidad Nacional del Litoral (UNL), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Predio CONICET Santa Fe , Santa Fe , Argentina
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Li J, Wang X, Zhang T, Wang C, Huang Z, Luo X, Deng Y. A review on phospholipids and their main applications in drug delivery systems. Asian J Pharm Sci 2015. [DOI: 10.1016/j.ajps.2014.09.004] [Citation(s) in RCA: 334] [Impact Index Per Article: 37.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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40
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Zhang Y, Zhang X, Liu H, Cai S, Wu B. Mixed nanomicelles as potential carriers for systemic delivery of Z-GP-Dox, an FAPα-based doxorubicin prodrug: formulation and pharmacokinetic evaluation. Int J Nanomedicine 2015; 10:1625-36. [PMID: 25759584 PMCID: PMC4346364 DOI: 10.2147/ijn.s75954] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Z-GP-Dox, the FAPα (fibroblast activation protein-α)-based doxorubicin prodrug, demonstrates excellent tumor targeting effects and a favorable toxicokinetic profile. However, the insoluble nature of Z-GP-Dox becomes a significant barrier to drug administration, particularly when it comes to the clinical stage. Here we developed a nanomicelle system to facilitate the systemic delivery of Z-GP-Dox, and evaluated its disposition in rats following administration of the micelles using a physiologically-based pharmacokinetic model. Z-GP-Dox-loaded mixed nanomicelles (ZGD-MNs) were prepared by dispersion of an ethanol solution of Z-GP-Dox, lecithin, and sodium oleate in water. The obtained ZGD-MNs were 86.6 nm in size with a drug loading of 14.03%. ZGD-MNs were fairly stable in phosphate-buffered saline and showed satisfactory physical and chemical stability over a 2-week observation period. Accumulative drug release was more than 56% within 24 hours. Further, the physiologically-based pharmacokinetic rat model consisting of various organs (ie, heart, liver, spleen, lung, kidney, and intestine) was fitted to the experimental data following administration of ZGD-loaded cosolvent (control) or micelles. Derived partition coefficient values revealed that the nanomicelles significantly altered the biodistribution of Z-GP-Dox. Of note, drug distribution to the lung, liver, and spleen was greatly enhanced and the fold change ranged from 2.4 to 33. In conclusion, this is the first report of a mixed micelle system being a viable carrier for delivery of Z-GP-Dox. Also, the pharmacokinetic behavior of Z-GP-Dox was satisfactorily described by the physiologically-based pharmacokinetic model.
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Affiliation(s)
- Yuchen Zhang
- Department of Pharmacology, Jinan University, Guangzhou, People's Republic of China
| | - Xingwang Zhang
- Division of Pharmaceutics, College of Pharmacy, Jinan University, Guangzhou, People's Republic of China
| | - Hongming Liu
- Division of Pharmaceutics, College of Pharmacy, Jinan University, Guangzhou, People's Republic of China
| | - Shaohui Cai
- Department of Pharmacology, Jinan University, Guangzhou, People's Republic of China
| | - Baojian Wu
- Division of Pharmaceutics, College of Pharmacy, Jinan University, Guangzhou, People's Republic of China
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Maswal M, Chat OA, Jabeen S, Ashraf U, Masrat R, Shah RA, Dar AA. Solubilization and co-solubilization of carbamazepine and nifedipine in mixed micellar systems: insights from surface tension, electronic absorption, fluorescence and HPLC measurements. RSC Adv 2015. [DOI: 10.1039/c4ra09870f] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We present single and simultaneous solubilization of carabamezipine and nifedipine in mixed micelles.
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Affiliation(s)
- Masrat Maswal
- Department of Chemistry
- University of Kashmir
- Srinagar-190 006
- India
| | - Oyais Ahmad Chat
- Department of Chemistry
- University of Kashmir
- Srinagar-190 006
- India
| | - Suraya Jabeen
- Department of Chemistry
- University of Kashmir
- Srinagar-190 006
- India
| | - Uzma Ashraf
- Department of Chemistry
- University of Kashmir
- Srinagar-190 006
- India
| | - Rohi Masrat
- Department of Chemistry
- University of Kashmir
- Srinagar-190 006
- India
| | - Rais Ahmad Shah
- Department of Chemistry
- University of Kashmir
- Srinagar-190 006
- India
| | - Aijaz Ahmad Dar
- Department of Chemistry
- University of Kashmir
- Srinagar-190 006
- India
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Shi-Xiao J, Shi-Ying J, Lv QY, Shan-Shan F, Jin H, Yuan HL. Mixed nanomicelles loaded with thymopeptides-sodium deoxycholate/phospholipid improve drug absorption. Chin J Nat Med 2014; 12:65-70. [PMID: 24484599 DOI: 10.1016/s1875-5364(14)60011-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Indexed: 10/25/2022]
Abstract
AIM To improve the absorption of thymopeptides (TH) by preparing sodium deoxycholate/phospholipid-mixed nanomicelles (SDC/PL-MMs). METHODS TH-SDC/PL-MMs were prepared by a film dispersion method, and then evaluated using photon correlation spectroscopy (PCS), zeta potential measurement, as well as their physical stability after storage for several days. Furthermore, in situ intestinal single-pass perfusion experiments and pharmacodynamics in immunodeficient mice were performed to make a comparison with TH powders and the control drug in absorption properties. RESULTS A narrow size distribution of nanomicelles, with a mean particle size of (149 ± 8.32) nm and a zeta potential of (-31.05 ± 2.52) mV, was obtained. The in situ intestine perfusion experiments demonstrated a significant advantage in absorption characteristics for TH compared to the other formulations, and oral administration of TH-SDC/PL-MMs potentiated an equivalent effect with i.h. TH in pharmacodynamic studies in immunodeficient mice. CONCLUSIONS TH-SDC/PL-MMs prepared by a film dispersion method are able to improve the absorption of TH. SDC/PL-MMs might be a good approach for the more effective delivery of drugs like TH.
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Affiliation(s)
- Jin Shi-Xiao
- Department of Pharmacy, 302 Military Hospital, Beijing 100039, China; School of pharmaceutics, Chengdu University of TCM, Chengdu 611730, China
| | - Jin Shi-Ying
- Department of Pharmacy, 302 Military Hospital, Beijing 100039, China; School of pharmaceutics, Chengdu University of TCM, Chengdu 611730, China
| | - Qing-Yuan Lv
- Department of Pharmacy, 302 Military Hospital, Beijing 100039, China
| | - Fu Shan-Shan
- Department of Pharmacy, 302 Military Hospital, Beijing 100039, China; School of pharmaceutics, Chengdu University of TCM, Chengdu 611730, China
| | - Han Jin
- Department of Pharmacy, 302 Military Hospital, Beijing 100039, China.
| | - Hai-Long Yuan
- Department of Pharmacy, 302 Military Hospital, Beijing 100039, China.
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Dong J, Song X, Lian X, Fu Y, Gong T. Subcutaneously injected ivermectin-loaded mixed micelles: formulation, pharmacokinetics and local irritation study. Drug Deliv 2014; 23:2220-2227. [PMID: 25188004 DOI: 10.3109/10717544.2014.956849] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Clinical application of ivermectin (IVM) is limited by several unfavorable properties, induced by its insolubility in water. Slight differences in formulation may change the plasma pharmacokinetics and efficacy. In this study, an IVM-loaded Soy phosphatidylcholine-sodium deoxycholate mixed micelles (IVM-SPC-SDC-MMs) were developed to improve its aqueous solubility, aiming to make it more applicable for clinical use. First, IVM-SPC-SDC-MMs were prepared using the co-precipitation method. After formulation optimization, the particle size was 9.46 ± 0.16 nm according to dynamic light scattering. The water solubility of IVM in SPC-SDC-MMs (4.79 ± 0.02 mg/mL) was improved by 1200-fold, comparing with free IVM (0.004 mg/mL). After subcutaneous administration, the pharmacokinetic study showed that IVM-SPC-SDC-MMs and commercially available IVM injection were bioequivalent. Also, the local irritation study confirmed that IVM-SPC-SDC-MMs reduced side reactions of the commercially available IVM injection. These results indicated that IVM-SPC-SDC-MMs represented a promising new drug formulation suitable for subcutaneous delivery of IVM.
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Affiliation(s)
- Jianxia Dong
- a Key Laboratory of Drug Targeting and Drug Delivery System, Ministry of Education, West China School of Pharmacy , Sichuan University , Sichuan , People's Republic of China
| | - Xu Song
- a Key Laboratory of Drug Targeting and Drug Delivery System, Ministry of Education, West China School of Pharmacy , Sichuan University , Sichuan , People's Republic of China
| | - Xianghong Lian
- a Key Laboratory of Drug Targeting and Drug Delivery System, Ministry of Education, West China School of Pharmacy , Sichuan University , Sichuan , People's Republic of China
| | - Yao Fu
- a Key Laboratory of Drug Targeting and Drug Delivery System, Ministry of Education, West China School of Pharmacy , Sichuan University , Sichuan , People's Republic of China
| | - Tao Gong
- a Key Laboratory of Drug Targeting and Drug Delivery System, Ministry of Education, West China School of Pharmacy , Sichuan University , Sichuan , People's Republic of China
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Cheng CY, Oh H, Wang TY, Raghavan SR, Tung SH. Mixtures of lecithin and bile salt can form highly viscous wormlike micellar solutions in water. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:10221-10230. [PMID: 25121460 DOI: 10.1021/la502380q] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The self-assembly of biological surfactants in water is an important topic for study because of its relevance to physiological processes. Two common types of biosurfactants are lecithin (phosphatidylcholine) and bile salts, which are both present in bile and involved in digestion. Previous studies on lecithin-bile salt mixtures have reported the formation of short, rodlike micelles. Here, we show that lecithin-bile salt micelles can be further induced to grow into long, flexible wormlike structures. The formation of long worms and their resultant entanglement into transient networks is reflected in the rheology: the fluids become viscoelastic and exhibit Maxwellian behavior, and their zero-shear viscosity can be up to a 1000-fold higher than that of water. The presence of worms is further confirmed by data from small-angle neutron and X-ray scattering and from cryo-transmission electron microscopy (cryo-TEM). We find that micellar growth peaks at a specific molar ratio (near equimolar) of bile salt:lecithin, which suggests a strong binding interaction between the two species. In addition, micellar growth also requires a sufficient concentration of background electrolyte such as NaCl or sodium citrate that serves to screen the electrostatic repulsion of the amphiphiles and to "salt out" the amphiphiles. We postulate a mechanism based on changes in the molecular geometry caused by bile salts and electrolytes to explain the micellar growth.
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Affiliation(s)
- Chih-Yang Cheng
- Institute of Polymer Science and Engineering and ‡Instrumentation Center, National Taiwan University , Taipei 10617, Taiwan
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van Hoogevest P, Wendel A. The use of natural and synthetic phospholipids as pharmaceutical excipients. EUR J LIPID SCI TECH 2014; 116:1088-1107. [PMID: 25400504 PMCID: PMC4207189 DOI: 10.1002/ejlt.201400219] [Citation(s) in RCA: 205] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Revised: 07/02/2014] [Accepted: 07/04/2014] [Indexed: 11/08/2022]
Abstract
In pharmaceutical formulations, phospholipids obtained from plant or animal sources and synthetic phospholipids are used. Natural phospholipids are purified from, e.g., soybeans or egg yolk using non-toxic solvent extraction and chromatographic procedures with low consumption of energy and minimum possible waste. Because of the use of validated purification procedures and sourcing of raw materials with consistent quality, the resulting products differing in phosphatidylcholine content possess an excellent batch to batch reproducibility with respect to phospholipid and fatty acid composition. The natural phospholipids are described in pharmacopeias and relevant regulatory guidance documentation of the Food and Drug Administration (FDA) and European Medicines Agency (EMA). Synthetic phospholipids with specific polar head group, fatty acid composition can be manufactured using various synthesis routes. Synthetic phospholipids with the natural stereochemical configuration are preferably synthesized from glycerophosphocholine (GPC), which is obtained from natural phospholipids, using acylation and enzyme catalyzed reactions. Synthetic phospholipids play compared to natural phospholipid (including hydrogenated phospholipids), as derived from the number of drug products containing synthetic phospholipids, a minor role. Only in a few pharmaceutical products synthetic phospholipids are used. Natural phospholipids are used in oral, dermal, and parenteral products including liposomes. Natural phospholipids instead of synthetic phospholipids should be selected as phospholipid excipients for formulation development, whenever possible, because natural phospholipids are derived from renewable sources and produced with more ecologically friendly processes and are available in larger scale at relatively low costs compared to synthetic phospholipids. Practical applications: For selection of phospholipid excipients for pharmaceutical formulations, natural phospholipids are preferred compared to synthetic phospholipids because they are available at large scale with reproducible quality at lower costs of goods. They are well accepted by regulatory authorities and are produced using less chemicals and solvents at higher yields. In order to avoid scale up problems during pharmaceutical development and production, natural phospholipid excipients instead of synthetic phospholipids should be selected whenever possible.
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Affiliation(s)
- Peter van Hoogevest
- Phospholipid Research Center Heidelberg, Im Neuenheimer Feld 582 Heidelberg, Germany
| | - Armin Wendel
- Phospholipid Research Center Heidelberg, Im Neuenheimer Feld 582 Heidelberg, Germany
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Leyva-Gómez G, González-Trujano ME, López-Ruiz E, Couraud PO, Wekslerg B, Romero I, Miller F, Delie F, Allémann E, Quintanar-Guerrero D. Nanoparticle formulation improves the anticonvulsant effect of clonazepam on the pentylenetetrazole-induced seizures: behavior and electroencephalogram. J Pharm Sci 2014; 103:2509-19. [PMID: 24916334 DOI: 10.1002/jps.24044] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 05/19/2014] [Accepted: 05/20/2014] [Indexed: 11/08/2022]
Abstract
To document the efficacy of clonazepam (CLZ) either free as a solution or loaded in solid lipid nanoparticles (CLZ-SLN) or mixed micelles (CLZ-MM), the in vitro blood-brain barrier permeability of the formulations was determined. Behavior and/or electroencephalograms (EEGs) of rodents receiving treatments were also studied. The in vitro permeability of CLZ increased when associated with SLN, but decreased in the case of MM. The occurrence of the pentylenetetrazole (PTZ)-induced seizures in mice was significantly prevented by CLZ, even when exposed a lower dose of CLZ-SLN after administration by the oral route. The behavioral severity and EEGs showing the PTZ-induced paroxystic activity in rats diminished significantly in the presence of CLZ alone (0.3 mg/kg), and were almost totally prevented in the rats treated with CLZ-SLN (equivalent to 0.3 mg/kg). The frequency, duration, and spreading of the spikes-wave of rats treated with CLZ-SLN decreased significantly as compared with CLZ alone, CLZ-MM, or the vehicle. These results show an in vitro-in vivo correlation in the enhanced blood-brain barrier permeability of SLN formulation, and a contribution of MM to the carrier effect of drugs toward the bloodstream and brain, where this pharmaceutical formulation of CLZ-SLN improves the anticonvulsant effect of this benzodiazepine, thus offering additional advantages after oral administration.
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Affiliation(s)
- Gerardo Leyva-Gómez
- Laboratorio de Investigación y Posgrado en Tecnología Farmacéutica, Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Estado de México, 54740, México; Laboratory of Connective Tissue, Centro Nacional de Investigación y Atención de Quemados, Instituto Nacional de Rehabilitación, México, D.F., México; Section des Sciences Pharmaceutiques, Technologie Pharmaceutique, Université de Genève, Geneva, 41211, Switzerland
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Turino LN, Mariano RN, Boimvaser S, Luna JA. In Situ-Formed Microparticles of PLGA from O/W Emulsions Stabilized with PVA: Encapsulation and Controlled Release of Progesterone. J Pharm Innov 2014. [DOI: 10.1007/s12247-014-9180-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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48
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Lv Q, Shen C, Li X, Shen B, Yu C, Xu P, Xu H, Han J, Yuan H. Mucoadhesive buccal films containing phospholipid-bile salts-mixed micelles as an effective carrier for Cucurbitacin B delivery. Drug Deliv 2014; 22:351-8. [DOI: 10.3109/10717544.2013.876459] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Gomez-Mendoza M, Marin ML, Miranda MA. Two-channel dansyl/tryptophan emitters with a cholic acid bridge as reporters for local hydrophobicity within supramolecular systems based on bile salts. Org Biomol Chem 2014; 12:8499-504. [DOI: 10.1039/c4ob01394h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Simultaneous emission from the Trp and Dns fluorophores of linked dyads in biomimetic media is quenched by iodide anions with rate constants that depend on the local hydrophobicity.
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Affiliation(s)
- M. Gomez-Mendoza
- Instituto Universitario Mixto de Tecnología Química (UPV-CSIC)
- Universitat Politècnica de València
- 46022 Valencia, Spain
| | - M. Luisa Marin
- Instituto Universitario Mixto de Tecnología Química (UPV-CSIC)
- Universitat Politècnica de València
- 46022 Valencia, Spain
| | - Miguel A. Miranda
- Instituto Universitario Mixto de Tecnología Química (UPV-CSIC)
- Universitat Politècnica de València
- 46022 Valencia, Spain
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50
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Nuin E, Gomez-Mendoza M, Marin ML, Andreu I, Miranda MA. Influence of Drug Encapsulation within Mixed Micelles on the Excited State Dynamics and Accessibility to Ionic Quenchers. J Phys Chem B 2013; 117:9327-32. [DOI: 10.1021/jp404353u] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Edurne Nuin
- Instituto Universitario Mixto
de Tecnología Química (UPV-CSIC), Universitat Politècnica de València, Avenida de los
Naranjos s/n, 46022 Valencia, Spain
| | - Miguel Gomez-Mendoza
- Instituto Universitario Mixto
de Tecnología Química (UPV-CSIC), Universitat Politècnica de València, Avenida de los
Naranjos s/n, 46022 Valencia, Spain
| | - M. Luisa Marin
- Instituto Universitario Mixto
de Tecnología Química (UPV-CSIC), Universitat Politècnica de València, Avenida de los
Naranjos s/n, 46022 Valencia, Spain
| | - Inmaculada Andreu
- Unidad Mixta de Investigación
IIS La Fe−UPV, Hospital La Fe, Avda.
Campanar 21, 46009 Valencia, Spain
| | - Miguel A. Miranda
- Instituto Universitario Mixto
de Tecnología Química (UPV-CSIC), Universitat Politècnica de València, Avenida de los
Naranjos s/n, 46022 Valencia, Spain
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