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Badruddoza AZM, Yeoh T, Shah JC, Walsh T. Assessing and Predicting Physical Stability of Emulsion-Based Topical Semisolid Products: A Review. J Pharm Sci 2023; 112:1772-1793. [PMID: 36966902 DOI: 10.1016/j.xphs.2023.03.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/20/2023] [Accepted: 03/21/2023] [Indexed: 03/30/2023]
Abstract
The emulsion-based topical semisolid dosage forms present a high degree of complexity due to their microstructures which is apparent from their compositions comprising at least two immiscible liquid phases, often times of high viscosity. These complex microstructures are thermodynamically unstable, and the physical stability of such preparations is governed by formulation parameters such as phase volume ratio, type of emulsifiers and their concentration, HLB value of the emulsifier, as well as by process parameters such as homogenizer speed, time, temperature etc. Therefore, a detailed understanding of the microstructure in the DP and critical factors that influence the stability of emulsions is essential to ensure the quality and shelf-life of emulsion-based topical semisolid products. This review aims to provide an overview of the main strategies used to stabilize pharmaceutical emulsions contained in semisolid products and various characterization techniques and tools that have been utilized so far to evaluate their long-term stability. Accelerated physical stability assessment using dispersion analyzer tools such as an analytical centrifuge to predict the product shelf-life has been discussed. In addition, mathematical modeling for phase separation rate for non-Newtonian systems like semisolid emulsion products has also been discussed to guide formulation scientists to predict a priori stability of these products.
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Affiliation(s)
- Abu Zayed Md Badruddoza
- Drug Product Design, Worldwide Research, Development and Medical, Pfizer Inc., Groton, CT 06340, USA.
| | - Thean Yeoh
- Drug Product Design, Worldwide Research, Development and Medical, Pfizer Inc., Groton, CT 06340, USA
| | - Jaymin C Shah
- Drug Product Design, Worldwide Research, Development and Medical, Pfizer Inc., Groton, CT 06340, USA
| | - Taylor Walsh
- Eurofins Lancaster Laboratories Professional Scientific Services, 2425 New Holland Pike, Lancaster, PA 17601, USA
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2
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Alara OR, Abdurahman NH, Tade MO, Ali HA, Alao KT. Demulsifier: An Important Agent in Breaking Crude Oil Emulsions. Chem Eng Technol 2022. [DOI: 10.1002/ceat.202100556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Oluwaseun Ruth Alara
- Universiti Malaysia Pahang Department of Chemical Engineering College of Engineering 26300 Gambang Pahang Malaysia
| | - Nour Hamid Abdurahman
- Universiti Malaysia Pahang Department of Chemical Engineering College of Engineering 26300 Gambang Pahang Malaysia
| | - Moses Oludayo Tade
- Curtin University Department of Chemical Engineering GPO Box U1987 6845 Perth WA Australia
| | - Hassan Alsaggaf Ali
- Eastern Unity Technology Suite 01, 12th Floor Plaza, 138 Annex Hotel Maya, Jalan Ampang 50450 Kuala Lumpur Malaysia
| | - Kehinde Temitope Alao
- Universiti Malaysia Pahang Department of Chemical Engineering College of Engineering 26300 Gambang Pahang Malaysia
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3
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Kücük Ş, Hejase CA, Kolesnyk IS, Chew JW, Tarabara VV. Microfiltration of saline crude oil emulsions: Effects of dispersant and salinity. JOURNAL OF HAZARDOUS MATERIALS 2021; 412:124747. [PMID: 33951851 DOI: 10.1016/j.jhazmat.2020.124747] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 11/18/2020] [Accepted: 11/28/2020] [Indexed: 06/12/2023]
Abstract
Dispersants reduce oil-water interfacial tension making the separation of oil-water emulsions challenging. In this study, crude oil stabilized by the dispersant, Corexit EC9500A, was emulsified in synthetic sea water using a range of Corexit/crude oil concentration ratios (up to 10% by volume). With an interfacial tension of only 8.0 mJ/m2 at 0.5 mL(Corexit)/L, approximately 50% of the crude was dispersed into droplets <10 µm. Near complete rejection of oil in crossflow separation tests was accompanied by a precipitous flux decline attributable in part to dispersant- and salinity-induced decrease in membrane's oleophobicity (4.2 mJ/m2 decrease in surface energy). Screening of electrostatic interactions prompted oil coalescence that occurred at the membrane surface but not in the bulk of the emulsion. Real-time in situ visualization by Direct Observation Through Membrane gave direct evidence of surface coalescence pointing to both its detrimental effects (spread of contiguous films) and possible advantages (removal of large droplets by crossflow shear).
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Affiliation(s)
- Şeyma Kücük
- Department of Civil and Environmental Engineering, Michigan State University, East Lansing, MI 48824, USA.
| | - Charifa A Hejase
- Department of Civil and Environmental Engineering, Michigan State University, East Lansing, MI 48824, USA.
| | - Iryna S Kolesnyk
- Department of Chemistry, National University of Kyiv-Mohyla Academy, Kyiv 04070, Ukraine.
| | - Jia Wei Chew
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 637459, Singapore; Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 637141, Singapore.
| | - Volodymyr V Tarabara
- Department of Civil and Environmental Engineering, Michigan State University, East Lansing, MI 48824, USA.
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4
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Geng D, Li Y, Wang C, Ren B, Wang H, Wu C, Zhang Y, Zhao L, Zhao L. Optimization, and in vitro and in vivo evaluation of etomidate intravenous lipid emulsion. Drug Deliv 2021; 28:873-883. [PMID: 33960250 PMCID: PMC8118403 DOI: 10.1080/10717544.2021.1917729] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
The aim of this investigation was to develop an etomidate intravenous lipid emulsion (ETM-ILE) and evaluate its properties in vitro and in vivo. Etomidate (ETM) is a hydrophobic drug, and organic solvents must be added to an etomidate injectable solution (ETM-SOL) to aid dissolution, that causes various adverse reactions on injection. Lipid emulsions are a novel drug formulation that can improve drug loading and reduce adverse reactions. ETM-ILE was prepared using high-pressure homogenization. Univariate experiments were performed to select key conditions and variables. The proportion of oil, egg lecithin, and poloxamer 188 (F68) served as variables for the optimization of the ETM-ILE formulation by central composite design response surface methodology. The optimized formulation had the following characteristics: particle size, 168.0 ± 0.3 nm; polydispersity index, 0.108 ± 0.028; zeta potential, −36.4 ± 0.2 mV; drug loading, 2.00 ± 0.01 mg/mL; encapsulation efficiency, 97.65% ± 0.16%; osmotic pressure, 292 ± 2 mOsmol/kg and pH value, 7.63 ± 0.07. Transmission electron microscopy images showed that the particles were spherical or spheroidal, with a diameter of approximately 200 nm. The stability study suggested that ETM-ILE could store at 4 ± 2 °C or 25 ± 2 °C for 12 months. Safety tests showed that ETM-ILE did not cause hemolysis or serious vascular irritation. The results of the pharmacokinetic study found that ETM-ILE was bioequivalent to ETM-SOL. However, a higher concentration of ETM was attained in the liver, spleen, and lungs after administration of ETM-ILE than after administration of ETM-SOL. This study found that ETM-ILE had great potential for clinical applications.
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Affiliation(s)
- Dandan Geng
- School of Pharmacy, North China University of Science and Technology, Tangshan, China
| | - Yan Li
- Department of Pharmacy, Tangshan Maternal and Child Health Hospital, Tangshan, China
| | - Chunyan Wang
- Department of Pharmacy, Tangshan Maternal and Child Health Hospital, Tangshan, China
| | - Bo Ren
- School of Pharmacy, North China University of Science and Technology, Tangshan, China
| | - Heping Wang
- School of Pharmacy, North China University of Science and Technology, Tangshan, China
| | - Chensi Wu
- School of Pharmacy, North China University of Science and Technology, Tangshan, China
| | - Yirong Zhang
- School of Pharmacy, North China University of Science and Technology, Tangshan, China
| | - Linlin Zhao
- School of Pharmacy, North China University of Science and Technology, Tangshan, China
| | - Ligang Zhao
- School of Pharmacy, North China University of Science and Technology, Tangshan, China.,Tangshan Key Laboratory of Novel Preparations and Drug Release Technology, Tangshan, China
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Chen Q, Tai X, Li J, Li C, Guo L. High Internal Phase Emulsions Synergistically Stabilized by Sodium Carboxymethyl Cellulose and Palm Kernel Oil Ethoxylates as an Essential Oil Delivery System. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:4191-4203. [PMID: 33787238 DOI: 10.1021/acs.jafc.0c07606] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
High internal phase emulsions (HIPEs) with an internal phase fraction of 84 vol % were prepared using carboxymethyl cellulose (CMC) and palm kernel oil ethoxylates (SOE-N-60) as a dual emulsifier. Effects of the oil-phase volume fraction, CMC concentration, and SOE-N-60 concentration on oil-in-water HIPEs stability were systematically studied by a Mastersizer 2000 instrument, Lx POL polarizing microscope, rheometer, etc. The bioavailability of tea tree oil can be effectively protected using HIPEs as a delivery system. The experimental results showed that, with the increase of the concentrations of CMC and SOE-N-60, the droplet size of HIPEs gradually decreases and the HIPEs showed good static stability. In addition, it was observed by scanning electron microscopy that the polyHIPEs materials using HIPEs stabilized by different SOE-N-60 and CMC concentrations as templates had different structures. Moreover, the synergism between CMC and SOE-N-60 surfactants plays a significant role in the preparation and stability of HIPEs.
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Affiliation(s)
- Qian Chen
- China Research Institute of Daily Chemistry Company, Limited, 34 Wenyuan Street, Taiyuan, Shanxi 030001, People's Republic of China
| | - Xiumei Tai
- China Research Institute of Daily Chemistry Company, Limited, 34 Wenyuan Street, Taiyuan, Shanxi 030001, People's Republic of China
| | - Jiyun Li
- China Research Institute of Daily Chemistry Company, Limited, 34 Wenyuan Street, Taiyuan, Shanxi 030001, People's Republic of China
| | - Chunhui Li
- China Research Institute of Daily Chemistry Company, Limited, 34 Wenyuan Street, Taiyuan, Shanxi 030001, People's Republic of China
| | - Lingxiao Guo
- China Research Institute of Daily Chemistry Company, Limited, 34 Wenyuan Street, Taiyuan, Shanxi 030001, People's Republic of China
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6
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Koroleva MY, Yurtov EV. Ostwald ripening in macro- and nanoemulsions. RUSSIAN CHEMICAL REVIEWS 2021. [DOI: 10.1070/rcr4962] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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7
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Zhou C, Dong X, Song C, Cui S, Chen T, Zhang D, Zhao X, Yang C. Rational Design of Hyaluronic Acid-Based Copolymer-Mixed Micelle in Combination PD-L1 Immune Checkpoint Blockade for Enhanced Chemo-Immunotherapy of Melanoma. Front Bioeng Biotechnol 2021; 9:653417. [PMID: 33777920 PMCID: PMC7987940 DOI: 10.3389/fbioe.2021.653417] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 02/05/2021] [Indexed: 01/10/2023] Open
Abstract
The application of combinational therapy breaks the limitation of monotherapy and achieves better clinical benefit for tumor therapy. Herein, a hyaluronic acid/Pluronic F68-based copolymer-mixed micelle was constructed for targeted delivery of chemotherapeutical agent docetaxel (PHDM) in combination with programmed cell death ligand-1(PD-L1) antibody. When PHDM+anti-PDL1 was injected into the blood system, PHDM could accumulate into tumor sites and target tumor cells via CD44-mediated endocytosis and possess tumor chemotherapy. While anti-PDL1 could target PD-L1 protein expressed on surface of tumor cells to the immune checkpoint blockade characteristic for tumor immunotherapy. This strategy could not only directly kill tumor cells but also improve CD8+ T cell level and facilitate effector cytokines release. In conclusion, the rational-designed PHDM+anti-PDL1 therapy strategy creates a new way for tumor immune-chemotherapy.
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Affiliation(s)
- Chaopei Zhou
- College Pharmacy, Jiamusi University, Jiamusi, China
| | - Xiuxiu Dong
- College Pharmacy, Jiamusi University, Jiamusi, China
| | | | - Shuang Cui
- College Pharmacy, Jiamusi University, Jiamusi, China
| | - Tiantian Chen
- College Pharmacy, Jiamusi University, Jiamusi, China
| | - Daji Zhang
- College Pharmacy, Jiamusi University, Jiamusi, China
| | - Xiuli Zhao
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
| | - Chunrong Yang
- College Pharmacy, Jiamusi University, Jiamusi, China
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8
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Perfluorocarbon-based oxygen carriers: from physics to physiology. Pflugers Arch 2020; 473:139-150. [PMID: 33141239 PMCID: PMC7607370 DOI: 10.1007/s00424-020-02482-2] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Revised: 10/12/2020] [Accepted: 10/16/2020] [Indexed: 12/29/2022]
Abstract
Developing biocompatible, synthetic oxygen carriers is a consistently challenging task that researchers have been pursuing for decades. Perfluorocarbons (PFC) are fascinating compounds with a huge capacity to dissolve gases, where the respiratory gases are of special interest for current investigations. Although largely chemically and biologically inert, pure PFCs are not suitable for injection into the vascular system. Extensive research created stable PFC nano-emulsions that avoid (i) fast clearance from the blood and (ii) long organ retention time, which leads to undesired transient side effects. PFC-based oxygen carriers (PFOCs) show a variety of application fields, which are worthwhile to investigate. To understand the difficulties that challenge researchers in creating formulations for clinical applications, this review provides the physical background of PFCs’ properties and then illuminates the reasons for instabilities of PFC emulsions. By linking the unique properties of PFCs and PFOCs to physiology, it elaborates on the response, processing and dysregulation, which the body experiences through intravascular PFOCs. Thereby the reader will receive a scientific and easily comprehensible overview why PFOCs are precious tools for so many diverse application areas from cancer therapeutics to blood substitutes up to organ preservation and diving disease.
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Aldemir Dikici B, Claeyssens F. Basic Principles of Emulsion Templating and Its Use as an Emerging Manufacturing Method of Tissue Engineering Scaffolds. Front Bioeng Biotechnol 2020; 8:875. [PMID: 32903473 PMCID: PMC7435020 DOI: 10.3389/fbioe.2020.00875] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 07/08/2020] [Indexed: 12/20/2022] Open
Abstract
Tissue engineering (TE) aims to regenerate critical size defects, which cannot heal naturally, by using highly porous matrices called TE scaffolds made of biocompatible and biodegradable materials. There are various manufacturing techniques commonly used to fabricate TE scaffolds. However, in most cases, they do not provide materials with a highly interconnected pore design. Thus, emulsion templating is a promising and convenient route for the fabrication of matrices with up to 99% porosity and high interconnectivity. These matrices have been used for various application areas for decades. Although this polymer structuring technique is older than TE itself, the use of polymerised internal phase emulsions (PolyHIPEs) in TE is relatively new compared to other scaffold manufacturing techniques. It is likely because it requires a multidisciplinary background including materials science, chemistry and TE although producing emulsion templated scaffolds is practically simple. To date, a number of excellent reviews on emulsion templating have been published by the pioneers in this field in order to explain the chemistry behind this technique and potential areas of use of the emulsion templated structures. This particular review focusses on the key points of how emulsion templated scaffolds can be fabricated for different TE applications. Accordingly, we first explain the basics of emulsion templating and characteristics of PolyHIPE scaffolds. Then, we discuss the role of each ingredient in the emulsion and the impact of the compositional changes and process conditions on the characteristics of PolyHIPEs. Afterward, current fabrication methods of biocompatible PolyHIPE scaffolds and polymerisation routes are detailed, and the functionalisation strategies that can be used to improve the biological activity of PolyHIPE scaffolds are discussed. Finally, the applications of PolyHIPEs on soft and hard TE as well as in vitro models and drug delivery in the literature are summarised.
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Affiliation(s)
- Betül Aldemir Dikici
- Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield, United Kingdom
- Department of Materials Science and Engineering, INSIGNEO Institute for In Silico Medicine, The University of Sheffield, Sheffield, United Kingdom
| | - Frederik Claeyssens
- Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield, United Kingdom
- Department of Materials Science and Engineering, INSIGNEO Institute for In Silico Medicine, The University of Sheffield, Sheffield, United Kingdom
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10
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Guo P, Pi C, Zhao S, Fu S, Yang H, Zheng X, Zhang X, Zhao L, Wei Y. Oral co-delivery nanoemulsion of 5-fluorouracil and curcumin for synergistic effects against liver cancer. Expert Opin Drug Deliv 2020; 17:1473-1484. [DOI: 10.1080/17425247.2020.1796629] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Pu Guo
- Department of Pharmaceutics, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, P.R. China
| | - Chao Pi
- Department of Pharmaceutics, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, P.R. China
| | - Shijie Zhao
- Department of Pharmaceutics, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, P.R. China
| | - Shaozhi Fu
- Department of Oncology, the Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, P.R. China
| | - Hongru Yang
- Department of Oncology, Luzhou People’s Hospital, Luzhou, Sichuan, 646000, P.R. China
| | - Xiaoli Zheng
- Basic Medical College, Southwest Medical University, Luzhou, Sichuan, 646000, P.R. China
| | - Xiaomei Zhang
- Institute of Medicinal Chemistry of Chinese Medicine, Chongqing Academy of Chinese Materia Medica, Chongqing, 400065, P.R. China
| | - Ling Zhao
- Department of Pharmaceutics, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, P.R. China
| | - Yumeng Wei
- Department of Pharmaceutics, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, P.R. China
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Liu Q, Huang H, Chen H, Lin J, Wang Q. Food-Grade Nanoemulsions: Preparation, Stability and Application in Encapsulation of Bioactive Compounds. Molecules 2019; 24:E4242. [PMID: 31766473 PMCID: PMC6930561 DOI: 10.3390/molecules24234242] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 11/11/2019] [Accepted: 11/14/2019] [Indexed: 01/19/2023] Open
Abstract
Nanoemulsions have attracted significant attention in food fields and can increase the functionality of the bioactive compounds contained within them. In this paper, the preparation methods, including low-energy and high-energy methods, were first reviewed. Second, the physical and chemical destabilization mechanisms of nanoemulsions, such as gravitational separation (creaming or sedimentation), flocculation, coalescence, Ostwald ripening, lipid oxidation and so on, were reviewed. Then, the impact of different stabilizers, including emulsifiers, weighting agents, texture modifiers (thickening agents and gelling agents), ripening inhibitors, antioxidants and chelating agents, on the physicochemical stability of nanoemulsions were discussed. Finally, the applications of nanoemulsions for the delivery of functional ingredients, including bioactive lipids, essential oil, flavor compounds, vitamins, phenolic compounds and carotenoids, were summarized. This review can provide some reference for the selection of preparation methods and stabilizers that will improve performance in nanoemulsion-based products and expand their usage.
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Affiliation(s)
- Qingqing Liu
- Key Laboratory of Grain and Oil Processing and Food Safety of Sichuan Province, College of Food and Bioengineering, Xihua University, Chengdu 610039, China; (Q.L.)
| | - He Huang
- Key Laboratory of Grain and Oil Processing and Food Safety of Sichuan Province, College of Food and Bioengineering, Xihua University, Chengdu 610039, China; (Q.L.)
| | - Honghong Chen
- Key Laboratory of Grain and Oil Processing and Food Safety of Sichuan Province, College of Food and Bioengineering, Xihua University, Chengdu 610039, China; (Q.L.)
| | - Junfan Lin
- Key Laboratory of Grain and Oil Processing and Food Safety of Sichuan Province, College of Food and Bioengineering, Xihua University, Chengdu 610039, China; (Q.L.)
| | - Qin Wang
- Key Laboratory of Grain and Oil Processing and Food Safety of Sichuan Province, College of Food and Bioengineering, Xihua University, Chengdu 610039, China; (Q.L.)
- Department of Nutrition and Food Science, College of Agriculture and Natural Resources, University of Maryland, College Park, MD 20740, USA
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Development of emulgels formulated with sweet fennel oil and rhamsan gum, a biological macromolecule produced by Sphingomonas. Int J Biol Macromol 2019; 129:326-332. [DOI: 10.1016/j.ijbiomac.2019.01.114] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 12/27/2018] [Accepted: 01/22/2019] [Indexed: 11/24/2022]
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13
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Cidade MT, Ramos DJ, Santos J, Carrelo H, Calero N, Borges JP. Injectable Hydrogels Based on Pluronic/Water Systems Filled with Alginate Microparticles for Biomedical Applications. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E1083. [PMID: 30986948 PMCID: PMC6479463 DOI: 10.3390/ma12071083] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 03/26/2019] [Accepted: 03/28/2019] [Indexed: 01/03/2023]
Abstract
A (model) composite system for drug delivery was developed based on a thermoresponsive hydrogel loaded with microparticles. We used Pluronic F127 hydrogel as the continuous phase and alginate microparticles as the dispersed phase of this composite system. It is well known that Pluronic F127 forms a gel when added to water in an appropriate concentration and in a certain temperature range. Pluronic F127 hydrogel may be loaded with drug and injected, in its sol state, to act as a drug delivery system in physiological environment. A rheological characterization allowed the most appropriate concentration of Pluronic F127 (15.5 wt%) and appropriate alginate microparticles contents (5 and 10 wt%) to be determined. Methylene blue (MB) was used as model drug to perform drug release studies in MB loaded Pluronic hydrogel and in MB loaded alginate microparticles/Pluronic hydrogel composite system. The latter showed a significantly slower MB release than the former (10 times), suggesting its potential in the development of dual cargo release systems either for drug delivery or tissue engineering.
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Affiliation(s)
- M T Cidade
- i3N/CENIMAT, Department of Materials Science, Faculty of Sciences and Technology, Universidade, NOVA de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal.
| | - D J Ramos
- i3N/CENIMAT, Department of Materials Science, Faculty of Sciences and Technology, Universidade, NOVA de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal.
| | - J Santos
- Applied Rheology, Colloid Technology, Chemical Engineering Department, University of Sevilla, c/ P. García González, 1, E41012 Sevilla, Spain.
| | - H Carrelo
- i3N/CENIMAT, Department of Materials Science, Faculty of Sciences and Technology, Universidade, NOVA de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal.
| | - N Calero
- Applied Rheology, Colloid Technology, Chemical Engineering Department, University of Sevilla, c/ P. García González, 1, E41012 Sevilla, Spain.
| | - J P Borges
- i3N/CENIMAT, Department of Materials Science, Faculty of Sciences and Technology, Universidade, NOVA de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal.
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Duan G, Kumar A, Li S, Cheng CM, Lee D. Effect of triblock copolymer surfactant composition on flow-induced phase inversion emulsification in a tapered channel. J Colloid Interface Sci 2019; 537:579-587. [PMID: 30471612 DOI: 10.1016/j.jcis.2018.11.014] [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: 08/26/2018] [Revised: 11/06/2018] [Accepted: 11/07/2018] [Indexed: 11/15/2022]
Abstract
HYPOTHESIS Phase inversion emulsification (PIE) is a process that inverts the dispersed and continuous phases of an emulsion and is useful for preparing emulsions that are challenging to produce using conventional techniques. A recent work has shown that PIE can be induced by flowing an emulsion through a tapered channel. Although prior studies have shown that flow-induced PIE (FIPIE) is influenced by the flow conditions and wetting properties of the channel surface, little is known about the effect of surfactant structure on FIPIE. We hypothesize that FIPIE is affected by the composition and structure of the surfactant used for emulsion stabilization. EXPERIMENTS We use Pluronics, a series of ABA triblock copolymers composed of hydrophilic poly(ethylene oxide) (PEO) and hydrophobic poly(propylene oxide) (PPO) with various lengths (A = PEO, B = PPO), as model surfactants to test this hypothesis. We observe that triblock copolymer surfactants with long PEO blocks suppress FIPIE. A scaling analysis based on a polymer brush model qualitatively agrees with the experimental observation. We also show that for small molecular weight Pluronics, FIPIE is significantly suppressed when Pluronics with large PPO blocks are used. FINDINGS Our results strongly indicate that the steric repulsion provided by the PEO blocks as well as the dilatational elasticity provided by the PPO blocks are key factors that control the FIPIE process.
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Affiliation(s)
- Gang Duan
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA 19104, United States
| | - Ankit Kumar
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA 19104, United States
| | - Shigeng Li
- Manufacturing & Materials Technology Area, Toner Development & Manufacturing Group, Xerox Corporation, Webster, NY 14580, United States
| | - Chieh-Min Cheng
- Manufacturing & Materials Technology Area, Toner Development & Manufacturing Group, Xerox Corporation, Webster, NY 14580, United States
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA 19104, United States.
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15
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Zhao S, Tian G, Zhao C, Li C, Bao Y, DiMarco-Crook C, Tang Z, Li C, Julian McClements D, Xiao H, Zheng J. The stability of three different citrus oil-in-water emulsions fabricated by spontaneous emulsification. Food Chem 2018; 269:577-587. [DOI: 10.1016/j.foodchem.2018.07.062] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Revised: 06/14/2018] [Accepted: 07/10/2018] [Indexed: 01/26/2023]
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Chen H, Fan H, Zhang Y, Xu X, Liu L, Hou Q. Investigations on the driving forces of the fluorocarbon surfactant-assisted spontaneous imbibition using thermogravimetric analysis (TGA). RSC Adv 2018; 8:38196-38203. [PMID: 35559056 PMCID: PMC9089812 DOI: 10.1039/c8ra08423h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 11/04/2018] [Indexed: 11/21/2022] Open
Abstract
Spontaneous imbibition is crucial for the development of matrix-fractured petroleum reservoirs. To improve the ultimate oil recovery, it is essential to demonstrate the role of the surfactant solution on the imbibition process. In this study, spontaneous imbibition experiments were carried out using self-prepared oil sand that to investigate the dependence of oil recovery on the concentration of a fluorocarbon surfactant (FS-30). Emulsion and solubilization were assessed to identify the correlation between oil-water interface properties and spontaneous imbibition. Moreover, thermogravimetric analysis (TGA) was also applied to accurately determine the imbibition recovery and look into the influence of components of crude oil on spontaneous imbibition. The maximum ultimate oil recovery in this work was 70.8% using 0.3 wt% FS-30, when the oil-solid adhesion tension, the capillary pressure (PC) and solubilization factor (SF) attained extreme values of −3.7002 mN m−1, 4.8751 MPa and 242.7 mL g−1, respectively. It was found that the surface activator played a critical role in promoting the imbibition process through altering the contact angle and interfacial tension. A negative adhesive tension and a positive capillary pressure would accordingly be generated, which facilitated the departure of oil droplets from the rock surface. In addition, it was observed that a lower solubilization factor and higher emulsion stability could favour spontaneous imbibition. Finally, heavier components in oil sands were more prone to be displaced than lighter counterparts, especially when the surfactant concentration was relatively high. This study may shed light on the effect of surfactants on spontaneous imbibition and thus is of great significance in understanding the underlying mechanism of the imbibition process. A new method using TGA was applied to study the predominant driving force and controlling factors of fluorocarbon surfactant-assisted spontaneous imbibition.![]()
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Affiliation(s)
- Haihui Chen
- School of Energy Resource, China University of Geosciences (Beijing) Beijing 100083 P. R. China .,Beijing Key Laboratory of Unconventional Natural Gas Geological Evaluation and Development Engineering Beijing 100083 P. R. China
| | - Hongfu Fan
- School of Energy Resource, China University of Geosciences (Beijing) Beijing 100083 P. R. China .,Beijing Key Laboratory of Unconventional Natural Gas Geological Evaluation and Development Engineering Beijing 100083 P. R. China
| | - Yi Zhang
- Research Institute of Petroleum Exploration & Development, CNPC Beijing 100083 P. R. China
| | - Xingguang Xu
- Energy Business Unit, Commonwealth Scientific Industrial Research Organization (CSIRO) Perth 6151 Australia
| | - Long Liu
- School of Energy Resource, China University of Geosciences (Beijing) Beijing 100083 P. R. China .,Beijing Key Laboratory of Unconventional Natural Gas Geological Evaluation and Development Engineering Beijing 100083 P. R. China
| | - Qingfeng Hou
- Research Institute of Petroleum Exploration & Development, CNPC Beijing 100083 P. R. China
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Dynamic Properties of Mixed Cationic/Nonionic Adsorbed Layers at the N-Hexane/Water Interface: Capillary Pressure Experiments Under Low Gravity Conditions. COLLOIDS AND INTERFACES 2018. [DOI: 10.3390/colloids2040053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Capillary pressure experiments are performed in microgravity conditions on board the International Space Station to quantify the dynamic interfacial behavior of mixed adsorption layers of TTAB and C13DMPO at the water/hexane interface. While the non-ionic surfactant C13DMPO is soluble in both bulk phases, water and hexane, the cationic surfactant TTAB is only soluble in the aqueous phase. The interfacial layer is thus formed by TTAB molecules adsorbing from the aqueous phase while the C13DMPO molecules adsorb from the aqueous phase, and transfer partially into the hexane phase until both the equilibrium of adsorption and the distribution between the two adjacent liquid phases is established. The experimental constrains as well as all possible influencing parameters, such as interfacial and bulk phase compressibility, interfacial curvature, calibration of pressure and absolute geometry size, are discussed in detail. The experimental results in terms of the dilational interfacial viscoelasticity of the mixed adsorption layers in a wide range of oscillation frequencies show that the existing theoretical background had to be extended in order to consider the effect of transfer of the non-ionic surfactant across the interface, and the curvature of the water/hexane interface. A good qualitative agreement between theory and experiment was obtained, however, for a quantitative comparison, additional accurate information on the adsorption isotherms and diffusion coefficients of the two studied surfactants in water and hexane, alone and in a mixed system, are required.
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Trujillo-Cayado LA, Alfaro MC, Santos J, Calero N, Muñoz J. Influence of primary homogenization step on microfluidized emulsions formulated with thyme oil and Appyclean 6548. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.05.031] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Time-dependent behavior in analyte-, temperature-, and shear-sensitive Pluronic PE9400/water systems. Colloid Polym Sci 2018. [DOI: 10.1007/s00396-018-4370-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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20
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Development of gelatin hydrogel pads incorporated with Eupatorium adenophorum essential oil as antibacterial wound dressing. Polym Bull (Berl) 2018. [DOI: 10.1007/s00289-018-2395-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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21
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Molecular-trapping in Emulsion's Monolayer: A New Strategy for Production and Purification of Bioactive Saponins. Sci Rep 2017; 7:14511. [PMID: 29109460 PMCID: PMC5674058 DOI: 10.1038/s41598-017-15067-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 10/16/2017] [Indexed: 11/23/2022] Open
Abstract
Saponins from defatted root-extract of Securidaca longipedunculata were systematically entrapped in emulsion monolayer-barrier and finally recovered in pure form through demulsification. First, their molecules were dispersed in water to engineer a monomolecular film architecture, via self-assembly. Emulsifying with ethyl-ether resulted in swollen micelles and engendered phase-inversion and phase-separation, by disrupting the thermodynamic equilibrium. As positive outcome, a Winsor II system was obtained, having saponin-rich upper phase (ethyl-ether) and impurities bound lower phase (aqueous). Saponin particles underwent transition in insoluble ethyl-ether, precipitated and recovered as solids. The entire process was bioactivity-guided and validated using pooled fractions of securidaca saponins, purified by TLC (RP-C18, F254S). TEM and SEM revealed interesting morphologies and particle sizes between nanometer and micron. At the end, purity output of 90% and total recovery of 94% were achieved. Here we show that “molecular-trapping in emulsion’s monolayer” is an effective method for recovery, production and purification of saponins of plant origin.
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Kalantari A, Kósa D, Nemes D, Ujhelyi Z, Fehér P, Vecsernyés M, Váradi J, Fenyvesi F, Kuki Á, Gonda S, Vasas G, Gesztelyi R, Salimi A, Bácskay I. Self-Nanoemulsifying Drug Delivery Systems Containing Plantago lanceolata-An Assessment of Their Antioxidant and Antiinflammatory Effects. Molecules 2017; 22:E1773. [PMID: 29053620 PMCID: PMC6151772 DOI: 10.3390/molecules22101773] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 10/12/2017] [Accepted: 10/13/2017] [Indexed: 01/27/2023] Open
Abstract
The most important components of Plantago lanceolata L. leaves are catalpol, aucubin, and acteoside (=verbascoside). These bioactive compounds possess different pharmacological effects: anti-inflammatory, antioxidant, antineoplastic, and hepatoprotective. The aim of this study was to protect Plantago lanceolata extract from hydrolysis and to improve its antioxidant effect using self-nano-emulsifying drug delivery systems (SNEDDS). Eight SNEDDS compositions were prepared, and their physical properties, in vitro cytotoxicity, and in vivo AST/ALT values were investigated. MTT cell viability assay was performed on Caco-2 cells. The well-diluted samples (200 to 1000-fold dilutions) proved to be non-cytotoxic. The acute administration of PL-SNEDDS compositions resulted in minor changes in hepatic markers (AST, ALT), except for compositions 4 and 8 due to their high Transcutol contents (80%). The non-toxic compositions showed a significant increase in free radical scavenger activity measured by the DPPH test compared to the blank SNEDDS. An indirect dissolution test was performed, based on the result of the DPPH antioxidant assay; the dissolution profiles of Plantago lancolata extract were statistically different from each SNEDDS. The anti-inflammatory effect of PL-SNEDDS compositions was confirmed by the ear inflammation test. For the complete examination period, all compositions decreased ear edema as compared to the positive (untreated) control. It can be concluded that PL-SNEDDS compositions could be used to deliver active natural compounds in a stable, efficient, and safe manner.
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Affiliation(s)
- Azin Kalantari
- Department of Pharmaceutical Technology (www.pharm.unideb.hu), University of Debrecen, Nagyerdei körút 98, 4032 Debrecen, Hungary.
| | - Dóra Kósa
- Department of Pharmaceutical Technology (www.pharm.unideb.hu), University of Debrecen, Nagyerdei körút 98, 4032 Debrecen, Hungary.
| | - Dániel Nemes
- Department of Pharmaceutical Technology (www.pharm.unideb.hu), University of Debrecen, Nagyerdei körút 98, 4032 Debrecen, Hungary.
| | - Zoltán Ujhelyi
- Department of Pharmaceutical Technology (www.pharm.unideb.hu), University of Debrecen, Nagyerdei körút 98, 4032 Debrecen, Hungary.
| | - Pálma Fehér
- Department of Pharmaceutical Technology (www.pharm.unideb.hu), University of Debrecen, Nagyerdei körút 98, 4032 Debrecen, Hungary.
| | - Miklós Vecsernyés
- Department of Pharmaceutical Technology (www.pharm.unideb.hu), University of Debrecen, Nagyerdei körút 98, 4032 Debrecen, Hungary.
| | - Judit Váradi
- Department of Pharmaceutical Technology (www.pharm.unideb.hu), University of Debrecen, Nagyerdei körút 98, 4032 Debrecen, Hungary.
| | - Ferenc Fenyvesi
- Department of Pharmaceutical Technology (www.pharm.unideb.hu), University of Debrecen, Nagyerdei körút 98, 4032 Debrecen, Hungary.
| | - Ákos Kuki
- Department of Applied Chemistry (www.pharm.unideb.hu), University of Debrecen, Nagyerdei körút 98, 4032 Debrecen, Hungary.
| | - Sándor Gonda
- Department of Pharmacognosy (www.pharm.unideb.hu), University of Debrecen, Nagyerdei körút 98, 4032 Debrecen, Hungary.
| | - Gábor Vasas
- Department of Pharmacognosy (www.pharm.unideb.hu), University of Debrecen, Nagyerdei körút 98, 4032 Debrecen, Hungary.
| | - Rudolf Gesztelyi
- Department of Pharmacology (www.med.unideb.hu), University of Debrecen, Nagyerdei körút 98, 4032 Debrecen, Hungary.
| | - Anayatollah Salimi
- Nanotechnology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz 61357-33184, Iran.
| | - Ildikó Bácskay
- Department of Pharmaceutical Technology (www.pharm.unideb.hu), University of Debrecen, Nagyerdei körút 98, 4032 Debrecen, Hungary.
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Sun Y, Wang Q, Chen J, Liu L, Ding L, Shen M, Li J, Han B, Duan Y. Temperature-Sensitive Gold Nanoparticle-Coated Pluronic-PLL Nanoparticles for Drug Delivery and Chemo-Photothermal Therapy. Theranostics 2017; 7:4424-4444. [PMID: 29158837 PMCID: PMC5695141 DOI: 10.7150/thno.18832] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 08/25/2017] [Indexed: 02/07/2023] Open
Abstract
Gold nanoparticle-coated Pluronic-b-poly(L-lysine) nanoparticles (Pluronic-PLL@Au NPs) were synthesized via an easy one-step method and employed as carriers for the delivery of paclitaxel (PTX) in chemo-photothermal therapy, in which Pluronic-PLL acts as the reductant for the formation of AuNPs without the need for an additional reducing agent. METHODS The deposition of AuNPs on the surface of Pluronic-PLL micelles and the thermal response of the system were followed via ultraviolet-visible spectroscopy and dynamic light scattering. Calcein-AM and MTT assays were used to study the cell viability of MDA-MB-231 cells treated with PTX-loaded Pluronic-PLL@Au NPs, and we then irradiated the cells with NIR light. RESULTS An obvious temperature response was observed for the Pluronic-PLL@Au NPs. Blood compatibility and in vitro cytotoxicity assays confirmed that the Pluronic-PLL@Au NPs have excellent biocompatibility. Compared to Taxol, the PTX-loaded Pluronic-PLL@Au NPs exhibited higher cytotoxicity in MDA-MB-231 cells. All of these results and confocal laser scanning microscopy analysis results suggest that Pluronic-PLL@Au NPs greatly enhance the cellular uptake efficiency of the drug. CONCLUSION As confirmed by in vitro and in vivo studies, the combination of chemotherapy and photothermal therapy can cause more damage than chemo- or photothermal therapy did alone, demonstrating the synergistic effect of chemo-photothermal treatment. Thus, the as-prepared Pluronic-PLL@Au NPs are promising for chemo-photothermal therapy.
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Affiliation(s)
- Ying Sun
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200032, People's Republic of China
| | - Qi Wang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200032, People's Republic of China
| | - Jianhua Chen
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200032, People's Republic of China
| | - Lei Liu
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200032, People's Republic of China
| | - Li Ding
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200032, People's Republic of China
| | - Ming Shen
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200032, People's Republic of China
| | - Jin Li
- Department of Ophthalmology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, People's Republic of China
| | - Baoshan Han
- Department of General Surgery, School of Medicine, Xinhua Hospital, Shanghai Jiao Tong University, Shanghai 200092, People's Republic of China
| | - Yourong Duan
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200032, People's Republic of China
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