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Tang B, Yang X, Zhang A, Wang Q, Fan L, Fang G. Polypseudorotaxane hydrogel based on Tween 80 and α-cyclodextrin for sustained delivery of low molecular weight heparin. Carbohydr Polym 2022; 297:120002. [DOI: 10.1016/j.carbpol.2022.120002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 08/13/2022] [Accepted: 08/16/2022] [Indexed: 11/26/2022]
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2
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Yang X, Wang Q, Zhang A, Shao X, Liu T, Tang B, Fang G. Strategies for sustained release of heparin: A review. Carbohydr Polym 2022; 294:119793. [PMID: 35868762 DOI: 10.1016/j.carbpol.2022.119793] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 06/18/2022] [Accepted: 06/25/2022] [Indexed: 11/28/2022]
Abstract
Heparin, a sulfate-containing linear polysaccharide, has proven preclinical and clinical efficacy for a variety of disorders. Heparin, including unfractionated heparin (UFH), low-molecular-weight heparin (LMWH), and ultra-low-molecular-weight heparin (ULMWH), is administered systematically, in the form of a solution in the clinic. However, it is eliminated quickly, due to its short half-life, especially in the case of UFH and LMWH. Frequent administration is required to ensure its therapeutic efficacy, leading to poor patient compliance. Moreover, heparin is used to coat blood-contacting medical devices to avoid thrombosis through physical interaction. However, the short-term durability of heparin on the surface of the stent limits its further application. Various advanced sustained-release strategies have been used to prolong its half-life in vivo as preparation technologies have improved. Herein, we briefly introduce the pharmacological activity and mechanisms of action of heparin. In addition, the strategies for sustained release of heparin are comprehensively summarized.
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Affiliation(s)
- Xuewen Yang
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province, 226001, China
| | - Qiuxiang Wang
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province, 226001, China
| | - Aiwen Zhang
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province, 226001, China
| | - Xinyao Shao
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province, 226001, China
| | - Tianqing Liu
- NICM Health Research Institute, Western Sydney University, Westmead, NSW 2145, Australia
| | - Bo Tang
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province, 226001, China.
| | - Guihua Fang
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province, 226001, China.
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3
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Shah SA, Sohail M, Minhas MU, Khan S, Hussain Z, Mahmood A, Kousar M, Thu HE, Abbasi M, Kashif MUR. Curcumin-laden hyaluronic acid-co-Pullulan-based biomaterials as a potential platform to synergistically enhance the diabetic wound repair. Int J Biol Macromol 2021; 185:350-368. [PMID: 34171251 DOI: 10.1016/j.ijbiomac.2021.06.119] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 06/11/2021] [Accepted: 06/16/2021] [Indexed: 01/13/2023]
Abstract
Injectable hydrogel with multifunctional tunable properties comprising biocompatibility, anti-oxidative, anti-bacterial, and/or anti-infection are highly preferred to efficiently promote diabetic wound repair and its development remains a challenge. In this study, we report hyaluronic acid and Pullulan-based injectable hydrogel loaded with curcumin that could potentiate reepithelization, increase angiogenesis, and collagen deposition at wound microenvironment to endorse healing cascade compared to other treatment groups. The physical interaction and self-assembly of hyaluronic acid-Pullulan-grafted-pluronic F127 injectable hydrogel were confirmed using nuclear magnetic resonance (1H NMR) and Fourier transformed infrared spectroscopy (FT-IR), and cytocompatibility was confirmed by fibroblast viability assay. The CUR-laden hyaluronic acid-Pullulan-g-F127 injectable hydrogel promptly undergoes a sol-gel transition and has proved to potentiate wound healing in a streptozotocin-induced diabetic rat model by promoting 93% of wound closure compared to other groups having 35%, 38%, and 62%. The comparative in vivo study and histological examination was conducted which demonstrated an expeditious recovery rate by significantly reducing the wound healing days i.e. 35 days in a control group, 33 days in the CUR suspension group, 21 days in unloaded injectable, and 13 days was observed in CUR loaded hydrogel group. Furthermore, we suggest that the injectable hydrogel laden with CUR showed a prompt wound healing potential by increasing the cell proliferation and serves as a drug delivery platform for sustained and targeted delivery of hydrophobic moieties.
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Affiliation(s)
- Syed Ahmed Shah
- Department of Pharmacy, COMSATS University, Islamabad, Abbottabad Campus, 22010, Pakistan
| | - Muhammad Sohail
- Department of Pharmacy, COMSATS University, Islamabad, Abbottabad Campus, 22010, Pakistan.
| | | | - Shahzeb Khan
- Department of Pharmacy, University of Malakand, Lower Dir, KPK, Pakistan; Discipline of Pharmaceutical Sciences, School of Health Sciences, UKZN, Durban, South Africa
| | - Zahid Hussain
- Department of Pharmaceutics & Pharmaceutical Technology, College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Arshad Mahmood
- Collage of Pharmacy, Al Ain University, Abu Dhabi, United Arab Emirates
| | - Mubeen Kousar
- Department of Pharmacy, COMSATS University, Islamabad, Abbottabad Campus, 22010, Pakistan
| | - Hnin Ei Thu
- Innoscience Research Sdn. Bhd., Suites B-5-7, Level 5, Skypark@ One City, Jalan Ust 25/1, Subang Jaya 47650, Selangor, Malaysia; Department of Pharmacology, Faculty of Medicine, Lincoln University College, Petaling Jaya 47301, Selangor, Malaysia
| | - Mudassir Abbasi
- Department of Pharmacy, COMSATS University, Islamabad, Abbottabad Campus, 22010, Pakistan
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4
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Piras CC, Kay AG, Genever PG, Smith DK. Self-assembled low-molecular-weight gelator injectable microgel beads for delivery of bioactive agents. Chem Sci 2021; 12:3958-3965. [PMID: 34163666 PMCID: PMC8179440 DOI: 10.1039/d0sc06296k] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
We report the preparation of hybrid self-assembled microgel beads by combining the low molecular weight gelator (LMWG) DBS-CONHNH2 and the natural polysaccharide calcium alginate polymer gelator (PG). Microgel formulations based on LMWGs are extremely rare due to the fragility of the self-assembled networks and the difficulty of retaining any imposed shape. Our hybrid beads contain interpenetrated LMWG and PG networks, and are obtained by an emulsion method, allowing the preparation of spherical gel particles of controllable sizes with diameters in the mm or μm range. Microgels based on LMWG/alginate can be easily prepared with reproducible diameters <1 μm (ca. 800 nm). They are stable in water at room temperature for many months, and survive injection through a syringe. The rapid assembly of the LMWG on cooling plays an active role in helping control the diameter of the microgel beads. These LMWG microbeads retained the ability of the parent gel to deliver the bioactive molecule heparin, and in cell culture medium this enhanced the growth of human mesenchymal stem cells. Such microgels may therefore have future applications in tissue repair. This approach to fabricating LMWG microgels is a platform technology, which could potentially be applied to a variety of different functional LMWGs, and hence has wide-ranging potential. We report microgel beads with diameters of ca. 800 nm based on interpenetrating networks of a low-molecular-weight gelator and a polymer gelator, and demonstrate their use as heparin delivery vehicles to enhance stem cell growth.![]()
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Affiliation(s)
- Carmen C Piras
- Department of Chemistry, University of York Heslington York YO10 5DD UK
| | - Alasdair G Kay
- Department of Biology, University of York Heslington York YO10 5DD UK
| | - Paul G Genever
- Department of Biology, University of York Heslington York YO10 5DD UK
| | - David K Smith
- Department of Chemistry, University of York Heslington York YO10 5DD UK
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5
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Hassanpour S, Kim HJ, Saadati A, Tebon P, Xue C, van den Dolder FW, Thakor J, Baradaran B, Mosafer J, Baghbanzadeh A, de Barros NR, Hashemzaei M, Lee KJ, Lee J, Zhang S, Sun W, Cho HJ, Ahadian S, Ashammakhi N, Dokmeci MR, Mokhtarzadeh A, Khademhosseini A. Thrombolytic Agents: Nanocarriers in Controlled Release. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2001647. [PMID: 32790000 PMCID: PMC7702193 DOI: 10.1002/smll.202001647] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 06/10/2020] [Indexed: 06/11/2023]
Abstract
Thrombosis is a life-threatening pathological condition in which blood clots form in blood vessels, obstructing or interfering with blood flow. Thrombolytic agents (TAs) are enzymes that can catalyze the conversion of plasminogen to plasmin to dissolve blood clots. The plasmin formed by TAs breaks down fibrin clots into soluble fibrin that finally dissolves thrombi. Several TAs have been developed to treat various thromboembolic diseases, such as pulmonary embolisms, acute myocardial infarction, deep vein thrombosis, and extensive coronary emboli. However, systemic TA administration can trigger non-specific activation that can increase the incidence of bleeding. Moreover, protein-based TAs are rapidly inactivated upon injection resulting in the need for large doses. To overcome these limitations, various types of nanocarriers have been introduced that enhance the pharmacokinetic effects by protecting the TA from the biological environment and targeting the release into coagulation. The nanocarriers show increasing half-life, reducing side effects, and improving overall TA efficacy. In this work, the recent advances in various types of TAs and nanocarriers are thoroughly reviewed. Various types of nanocarriers, including lipid-based, polymer-based, and metal-based nanoparticles are described, for the targeted delivery of TAs. This work also provides insights into issues related to the future of TA development and successful clinical translation.
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Affiliation(s)
- Soodabeh Hassanpour
- Department of Analytical Chemistry, Faculty of Science, Palacky University Olomouc, 17. Listopadu 12, Olomouc, 77146, Czech Republic
| | - Han-Jun Kim
- Department of Bioengineering, Center for Minimally Invasive Therapeutics (C-MIT) and California NanoSystems Institute University of California-Los Angeles, Los Angeles, CA, 90095, USA
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90024, USA
| | - Arezoo Saadati
- Pharmaceutical Analysis Research Center, Tabriz University of Medical Sciences, Tabriz, 516614731, Iran
| | - Peyton Tebon
- Department of Bioengineering, Center for Minimally Invasive Therapeutics (C-MIT) and California NanoSystems Institute University of California-Los Angeles, Los Angeles, CA, 90095, USA
| | - Chengbin Xue
- Department of Bioengineering, Center for Minimally Invasive Therapeutics (C-MIT) and California NanoSystems Institute University of California-Los Angeles, Los Angeles, CA, 90095, USA
| | - Floor W van den Dolder
- Department of Bioengineering, Center for Minimally Invasive Therapeutics (C-MIT) and California NanoSystems Institute University of California-Los Angeles, Los Angeles, CA, 90095, USA
- Division Heart and Lungs, Department of Cardiothoracic Surgery, University Medical Center Utrecht, Utrecht, GA, 3508, The Netherlands
- Regenerative Medicine Center Utrecht, University Medical Center Utrecht, Utrecht, CT, 3584, The Netherlands
| | - Jai Thakor
- Department of Bioengineering, Center for Minimally Invasive Therapeutics (C-MIT) and California NanoSystems Institute University of California-Los Angeles, Los Angeles, CA, 90095, USA
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, 516614731, Iran
| | - Jafar Mosafer
- Research Center of Advanced Technologies in Medicine, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, 9519633787, Iran
| | - Amir Baghbanzadeh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, 516614731, Iran
| | - Natan Roberto de Barros
- Department of Bioengineering, Center for Minimally Invasive Therapeutics (C-MIT) and California NanoSystems Institute University of California-Los Angeles, Los Angeles, CA, 90095, USA
| | - Mahmoud Hashemzaei
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Zabol University of Medical Sciences, Zabol, 9861618335, Iran
| | - Kang Ju Lee
- Department of Bioengineering, Center for Minimally Invasive Therapeutics (C-MIT) and California NanoSystems Institute University of California-Los Angeles, Los Angeles, CA, 90095, USA
| | - Junmin Lee
- Department of Bioengineering, Center for Minimally Invasive Therapeutics (C-MIT) and California NanoSystems Institute University of California-Los Angeles, Los Angeles, CA, 90095, USA
| | - Shiming Zhang
- Department of Bioengineering, Center for Minimally Invasive Therapeutics (C-MIT) and California NanoSystems Institute University of California-Los Angeles, Los Angeles, CA, 90095, USA
| | - Wujin Sun
- Department of Bioengineering, Center for Minimally Invasive Therapeutics (C-MIT) and California NanoSystems Institute University of California-Los Angeles, Los Angeles, CA, 90095, USA
| | - Hyun-Jong Cho
- Department of Bioengineering, Center for Minimally Invasive Therapeutics (C-MIT) and California NanoSystems Institute University of California-Los Angeles, Los Angeles, CA, 90095, USA
- College of Pharmacy, Kangwon National University, Chuncheon, Gangwon, 24341, Republic of Korea
| | - Samad Ahadian
- Department of Bioengineering, Center for Minimally Invasive Therapeutics (C-MIT) and California NanoSystems Institute University of California-Los Angeles, Los Angeles, CA, 90095, USA
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90024, USA
| | - Nureddin Ashammakhi
- Department of Bioengineering, Center for Minimally Invasive Therapeutics (C-MIT) and California NanoSystems Institute University of California-Los Angeles, Los Angeles, CA, 90095, USA
- Jonsson Comprehensive Cancer Center, Department of Radiology and Department of Chemical and Biomolecular Engineering, University of California-Los Angeles, Los Angeles, CA, 90095, USA
| | - Mehmet R Dokmeci
- Department of Bioengineering, Center for Minimally Invasive Therapeutics (C-MIT) and California NanoSystems Institute University of California-Los Angeles, Los Angeles, CA, 90095, USA
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90024, USA
- Jonsson Comprehensive Cancer Center, Department of Radiology and Department of Chemical and Biomolecular Engineering, University of California-Los Angeles, Los Angeles, CA, 90095, USA
| | - Ahad Mokhtarzadeh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, 516614731, Iran
| | - Ali Khademhosseini
- Department of Bioengineering, Center for Minimally Invasive Therapeutics (C-MIT) and California NanoSystems Institute University of California-Los Angeles, Los Angeles, CA, 90095, USA
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90024, USA
- Jonsson Comprehensive Cancer Center, Department of Radiology and Department of Chemical and Biomolecular Engineering, University of California-Los Angeles, Los Angeles, CA, 90095, USA
- Department of Chemical and Biomolecular Engineering, Henry Samueli School of Engineering and Applied Sciences, University of California - Los Angeles, Los Angeles, CA, 90095, USA
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6
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Fang G, Tang B. Advanced delivery strategies facilitating oral absorption of heparins. Asian J Pharm Sci 2020; 15:449-460. [PMID: 32952668 PMCID: PMC7486512 DOI: 10.1016/j.ajps.2019.11.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 09/23/2019] [Accepted: 11/21/2019] [Indexed: 12/20/2022] Open
Abstract
Heparins show great anticoagulant effect with few side effects, and are administered by subcutaneous or intravenous route in clinics. To improve patient compliance, oral administration is an alternative route. Nonetheless, oral administration of heparins still faces enormous challenges due to the multiple obstacles. This review briefly analyzes a series of barriers ranging from poorly physicochemical properties of heparins, to harsh biological barriers including gastrointestinal degradation and pre-systemic metabolism. Moreover, several approaches have been developed to overcome these obstacles, such as improving stability of heparins in the gastrointestinal tract, enhancing the intestinal epithelia permeability and facilitating lymphatic delivery of heparins. Overall, this review aims to provide insights concerning advanced delivery strategies facilitating oral absorption of heparins.
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Affiliation(s)
- Guihua Fang
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong 226001, China
| | - Bo Tang
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong 226001, China
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7
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Sigfridsson K, Arvidsson T, Xue A, Wagner DJ, Pop-Damkov P, Zhang G, Strimfors M. A candidate drug administered subcutaneously to rodents as drug particles showing hepatic recirculation which influenced the sustained release process. Int J Pharm 2020; 581:119252. [PMID: 32240808 DOI: 10.1016/j.ijpharm.2020.119252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 03/19/2020] [Accepted: 03/20/2020] [Indexed: 11/16/2022]
Abstract
The aim of the present study was to evaluate and interpret the pharmacokinetic profiles after subcutaneous (s.c.) administration of crystalline AZ'72 nano- and microsuspensions to rodents. Both formulations were injected at 1.5 and 150 mg/kg to rats. For the lower dose, the profiles were similar after s.c. injection but extended as compared to oral administration. The overall exposure was higher for nanoparticles compared with microparticles during the investigated period. For the higher dose, injection of both suspensions resulted in maintained plateaus caused by the drug depots but, unexpectedly, at similar exposure levels. After addition of a further stabilizer, pluronic F127, nanosuspensions showed improved exposure with dose and higher exposure compared to larger particles in mice. Obviously, a stabilizer mixture that suits one delivery route is not necessarily optimal for another one. The differences in peak concentration (Cmax) between nano- and microparticles were mainly ascribed to differences in dissolution rate. Plasma profiles in mice showed curves with secondary absorption peaks after intravenous and oral administration, suggesting hepatic recirculation following both administration routes. This process, together with the depot formulation, complicates the analysis of absorption from s.c. administration, i.e. multiple processes were driving the plasma profile of AZ'72.
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Affiliation(s)
- Kalle Sigfridsson
- Advanced Drug Delivery, Pharmaceutical Sciences, R&D, AstraZeneca, Gothenburg, Sweden.
| | - Torbjörn Arvidsson
- Early Product Development, Pharmaceutical Sciences, R&D, AstraZeneca, Gothenburg, Sweden
| | - Aixiang Xue
- Animal Sciences and Technologies, Clinical Pharmacology and Safety Sciences, R&D, AstraZeneca, Boston, USA
| | - David J Wagner
- DMPK, Research and Early Development, Oncology R&D, AstraZeneca, Boston, USA
| | - Petar Pop-Damkov
- DMPK, Research and Early Development, Oncology R&D, AstraZeneca, Boston, USA
| | - Guangnong Zhang
- DMPK, Research and Early Development, Oncology R&D, AstraZeneca, Boston, USA
| | - Marie Strimfors
- Bioscience Metabolism, Research and Early Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
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8
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Kocak FZ, Talari AC, Yar M, Rehman IU. In-Situ Forming pH and Thermosensitive Injectable Hydrogels to Stimulate Angiogenesis: Potential Candidates for Fast Bone Regeneration Applications. Int J Mol Sci 2020; 21:E1633. [PMID: 32120998 PMCID: PMC7084557 DOI: 10.3390/ijms21051633] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 02/15/2020] [Accepted: 02/24/2020] [Indexed: 12/20/2022] Open
Abstract
Biomaterials that promote angiogenesis are required for repair and regeneration of bone. In-situ formed injectable hydrogels functionalised with bioactive agents, facilitating angiogenesis have high demand for bone regeneration. In this study, pH and thermosensitive hydrogels based on chitosan (CS) and hydroxyapatite (HA) composite materials loaded with heparin (Hep) were investigated for their pro-angiogenic potential. Hydrogel formulations with varying Hep concentrations were prepared by sol-gel technique for these homogeneous solutions were neutralised with sodium bicarbonate (NaHCO3) at 4 °C. Solutions (CS/HA/Hep) constituted hydrogels setting at 37 °C which was initiated from surface in 5-10 minutes. Hydrogels were characterised by performing injectability, gelation, rheology, morphology, chemical and biological analyses. Hydrogel solutions facilitated manual dropwise injection from 21 Gauge which is highly used for orthopaedic and dental administrations, and the maximum injection force measured through 19 G needle (17.191 ± 2.296N) was convenient for manual injections. Angiogenesis tests were performed by an ex-ovo chick chorioallantoic membrane (CAM) assay by applying injectable solutions on CAM, which produced in situ hydrogels. Hydrogels induced microvascularity in CAM assay this was confirmed by histology analyses. Hydrogels with lower concentration of Hep showed more efficiency in pro-angiogenic response. Thereof, novel injectable hydrogels inducing angiogenesis (CS/HA/Hep) are potential candidates for bone regeneration and drug delivery applications.
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Affiliation(s)
- Fatma Z. Kocak
- Engineering Department, Lancaster University, Lancaster LA1 4YW, UK; (F.Z.K.)
| | | | - Muhammad Yar
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Punjab 54000, Pakistan;
| | - Ihtesham U. Rehman
- Engineering Department, Lancaster University, Lancaster LA1 4YW, UK; (F.Z.K.)
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9
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Abdeltawab H, Svirskis D, Sharma M. Formulation strategies to modulate drug release from poloxamer based in situ gelling systems. Expert Opin Drug Deliv 2020; 17:495-509. [PMID: 32067500 DOI: 10.1080/17425247.2020.1731469] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Introduction: Poloxamer based in situ gelling systems offer numerous advantages in drug delivery; however, their application as prolonged-release delivery platforms is limited mainly due to their weak mechanical properties and the interconnected aqueous network causing fast gel erosion and drug diffusion.Area covered: The focus of this review is to provide an insightful discussion on the formulation strategies that can be employed to sustain/prolong the drug release from poloxamer based in situ gelling systems. The review also outlines the formulation factors, influencing drug release from these systems.Expert opinion: The nature, composition, and concentration of poloxamers are the most critical factors in defining the rate of drug release from an in situ gelling matrix. Hydrophobic gel matrices have compact micellar arrangements resulting in slow diffusion and erosion. Depending on the intended clinical application, gel characteristics can be modulated, either by physical blending or by chemical crosslinking with additive materials, to slow release and improve residence time at the administration site. Incorporating drug-loaded particles into poloxamer gels sustains drug release by creating multiple rate-limiting release barriers. Chemical modification of poloxamers appears to be a promising strategy to obtain prolonged sustained release for parenteral application without compromising the rheological properties of the formulation.
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Affiliation(s)
- Hani Abdeltawab
- School of Pharmacy, Faculty of Medical & Health Sciences, The University of Auckland, Auckland, New Zealand
| | - Darren Svirskis
- School of Pharmacy, Faculty of Medical & Health Sciences, The University of Auckland, Auckland, New Zealand
| | - Manisha Sharma
- School of Pharmacy, Faculty of Medical & Health Sciences, The University of Auckland, Auckland, New Zealand
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10
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Wen J, Chen Q, Ye L, Zhang H, Zhang A, Feng Z. The preparation of pH and GSH dual responsive thiolated heparin/DOX complex and its application as drug carrier. Carbohydr Polym 2019; 230:115592. [PMID: 31887923 DOI: 10.1016/j.carbpol.2019.115592] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 11/05/2019] [Accepted: 11/08/2019] [Indexed: 01/23/2023]
Abstract
The complicated preparation procedure and carrier's suspicious biocompatibility are two major limitations for traditional drug carrier. In this manuscript, a novel polyion complex (PIC) was prepared by simply mixing two biocompatible components, thiolated heparin and doxorubicin (DOX), and subsequently crosslinking under atmosphere, so that it can overcome the above limitations. The PIC's particle size kept stable for one week storage in PBS, and the particles wouldn't decomposed by the dilution, indicating excellent storage and anti-dilution stability resulting from the crosslinking. The PIC can release the larger amount of DOX in acidic environment than psychological environment, and largest amount in acidic and glutathione (GSH) environment, showing the pH and GSH dual sensitive drug release behavior. Furthermore, the PIC exhibited obvious tumor inhibition effect in vivo as well as long circulation ability and low heart toxicity by anti-tumor tests on tumor-bearing mice. Consequently, as-prepared PIC shows promising potential in drug carrier application.
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Affiliation(s)
- Juan Wen
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Qingping Chen
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Lin Ye
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, Beijing 100081, China.
| | - Huan Zhang
- Beijing Shijitan Hospital, Capital Medical University, 100038 Beijing, China
| | - Aiying Zhang
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, Beijing 100081, China
| | - Zengguo Feng
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, Beijing 100081, China
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11
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Piras CC, Smith DK. Sequential Assembly of Mutually Interactive Supramolecular Hydrogels and Fabrication of Multi-Domain Materials. Chemistry 2019; 25:11318-11326. [PMID: 31237367 DOI: 10.1002/chem.201902158] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/19/2019] [Indexed: 11/09/2022]
Abstract
A two-component self-sorting hydrogel based on acylhydrazide and carboxylic acid derivatives of 1,3:2,4-dibenzylidene-d-sorbitol (DBS-CONHNH2 and DBS-COOH) is reported. A heating-cooling cycle induces the self-assembly of DBS-CONHNH2 , followed by the self-assembly of DBS-COOH induced by decreasing pH. Although the networks are formed sequentially, there is spectroscopic evidence of interactions between them, which impact on the mechanical properties and significantly enhance the ability of these low-molecular-weight gelators (LMWGs) to form gels when mixed. The DBS-COOH network can be switched "off" and "on" within the two-component gel through a pH change. By using a photo-acid generator, the two-component gel can be prepared combining the thermal trigger with photo-irradiation. Photo-patterned self-assembly of DBS-COOH within a pre-formed DBS-CONHNH2 gel under a mask yields spatially controlled multi-domain gels. Different gel domains can have different functions, for example, controlling the rate of release of heparin incorporated into the gel, or directing gold nanoparticle assembly. Such photo-patterned multi-component hydrogels have potential applications in regenerative medicine or bio-nano-electronics.
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Affiliation(s)
- Carmen C Piras
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
| | - David K Smith
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
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12
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Li Q, Ye L, Zhang A, Feng Z. The preparation and morphology control of heparin-based pH sensitive polyion complexes and their application as drug carriers. Carbohydr Polym 2019; 211:370-379. [PMID: 30824101 DOI: 10.1016/j.carbpol.2019.01.089] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 01/17/2019] [Accepted: 01/25/2019] [Indexed: 12/20/2022]
Abstract
Heparin as negative polysaccharide is a universal building block to form polyion complex with different cationic counterparts. In this paper, three different cations, including chitosan, benzyldodecyldimethyl ammonium bromide and doxorubicin hydrochloride, were used to prepare heparin-based polyion complexes (HPICs). Their morphologies could be tuned by heparin content in HPIC, and they also showed pH-sensitive decomposition. Doxorubicin was further encapsulated into micelle and vesicle carrier made from heparin-benzyldodecyl dimethyl ammonium bromide PIC, whereas heparin-doxorubicin PIC could be directly used as drug carrier. In vitro drug release proved the drug carriers exhibit obvious pH sensitive release behaviour. Cytotoxicity indicated the drug carrier possessed significant cytotoxicity to tumor cells. The cell uptake observed by CLSM showed the carrier was able to deliver antitumor drug into tumor cell's nucleus. Consequently, these results showed the promising potential of HPIC in drug carrier application.
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Affiliation(s)
- Qingxuan Li
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Lin Ye
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China; Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, Beijing, 100081, China.
| | - Aiying Zhang
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China; Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, Beijing, 100081, China
| | - Zengguo Feng
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China; Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, Beijing, 100081, China
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13
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Feng S, Wang S, Lv Y, He L, Li Q, Zhang T. Dual pH- and thermal-responsive nanocomposite hydrogels for controllable delivery of hydrophobic drug baicalein. POLYM INT 2019. [DOI: 10.1002/pi.5738] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Shuangjiang Feng
- School of Environmental and Chemical Engineering, Hebei Key Laboratory of Applied Chemistry; Yanshan University; Qinhuangdao China
| | - Shuxue Wang
- School of Environmental and Chemical Engineering, Hebei Key Laboratory of Applied Chemistry; Yanshan University; Qinhuangdao China
| | - Yuanfei Lv
- School of Environmental and Chemical Engineering, Hebei Key Laboratory of Applied Chemistry; Yanshan University; Qinhuangdao China
| | - Lei He
- School of Environmental and Chemical Engineering, Hebei Key Laboratory of Applied Chemistry; Yanshan University; Qinhuangdao China
| | - Qiurong Li
- School of Environmental and Chemical Engineering, Hebei Key Laboratory of Applied Chemistry; Yanshan University; Qinhuangdao China
| | - Tao Zhang
- School of Chemistry and Chemical Engineering; Jiangsu University; Zhenjiang China
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14
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Fang G, Zhou J, Qian Y, Gou J, Yang X, Tang B. Development and evaluation of thermo-sensitive hydrogel system with nanocomplexes for prolonged subcutaneous delivery of enoxaparin. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2018.09.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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15
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Bodratti AM, Alexandridis P. Amphiphilic block copolymers in drug delivery: advances in formulation structure and performance. Expert Opin Drug Deliv 2018; 15:1085-1104. [DOI: 10.1080/17425247.2018.1529756] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Andrew M. Bodratti
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York (SUNY), Buffalo, NY, USA
| | - Paschalis Alexandridis
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York (SUNY), Buffalo, NY, USA
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16
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Pelegrino MT, De Araujo Lima B, Do Nascimento MHM, Lombello CB, Brocchi M, Seabra AB. Biocompatible and Antibacterial Nitric Oxide-Releasing Pluronic F-127/Chitosan Hydrogel for Topical Applications. Polymers (Basel) 2018; 10:E452. [PMID: 30966487 PMCID: PMC6415216 DOI: 10.3390/polym10040452] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 04/08/2018] [Accepted: 04/16/2018] [Indexed: 01/08/2023] Open
Abstract
Nitric oxide (NO) is involved in physiological processes, including vasodilatation, wound healing and antibacterial activities. As NO is a free radical, designing drugs to generate therapeutic amounts of NO in controlled spatial and time manners is still a challenge. In this study, the NO donor S-nitrosoglutathione (GSNO) was incorporated into the thermoresponsive Pluronic F-127 (PL)-chitosan (CS) hydrogel, with an easy and economically feasible methodology. CS is a polysaccharide with known antimicrobial properties. Scanning electron microscopy, rheology and differential scanning calorimetry techniques were used for hydrogel characterization. The results demonstrated that the hydrogel has a smooth surface, thermoresponsive behavior and good mechanical stability. The kinetics of NO release and GSNO diffusion from GSNO-containing PL/CS hydrogel demonstrated a sustained NO/GSNO release, in concentrations suitable for biomedical applications. The GSNO-PL/CS hydrogel demonstrated a concentration-dependent toxicity to Vero cells, and antimicrobial activity to Pseudomonas aeruginosa (minimum inhibitory concentration and minimum bactericidal concentration values of 0.5 µg·mL-1 of hydrogel, which corresponds to 1 mmol·L-1 of GSNO). Interestingly, the concentration range in which the NO-releasing hydrogel demonstrated an antibacterial effect was not found to be toxic to the Vero mammalian cell. Thus, the GSNO-PL/CS hydrogel is a suitable biomaterial for topical NO delivery applications.
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Affiliation(s)
- Milena T Pelegrino
- Center for Natural and Human Sciences, Universidade Federal do ABC, Av. dos Estados 5001, Santo André, SP, CEP 09210-580, Brazil.
- Nanomedicine Research Unit (NANOMED), Universidade Federal do ABC, Av. dos Estados 5001, Santo André, SP 09210-580, Brazil.
| | - Bruna De Araujo Lima
- Tropical Disease Laboratory, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, SP 13083-862, Brazil.
| | - Mônica H M Do Nascimento
- Nanomedicine Research Unit (NANOMED), Universidade Federal do ABC, Av. dos Estados 5001, Santo André, SP 09210-580, Brazil.
- Tropical Disease Laboratory, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, SP 13083-862, Brazil.
| | - Christiane B Lombello
- Center for Natural and Human Sciences, Universidade Federal do ABC, Av. dos Estados 5001, Santo André, SP, CEP 09210-580, Brazil.
- Center for Engineering, Modeling and Applied Social Science, Universidade Federal do ABC, Alameda da Universidade sem numero, São Bernardo do Campo, SP, CEP 09606-045, Brazil.
| | - Marcelo Brocchi
- Tropical Disease Laboratory, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, SP 13083-862, Brazil.
| | - Amedea B Seabra
- Center for Natural and Human Sciences, Universidade Federal do ABC, Av. dos Estados 5001, Santo André, SP, CEP 09210-580, Brazil.
- Nanomedicine Research Unit (NANOMED), Universidade Federal do ABC, Av. dos Estados 5001, Santo André, SP 09210-580, Brazil.
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17
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Noori S, Kokabi M, Hassan ZM. Poly(vinyl alcohol)/chitosan/honey/clay responsive nanocomposite hydrogel wound dressing. J Appl Polym Sci 2018. [DOI: 10.1002/app.46311] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- S. Noori
- Polymer Engineering Department, Faculty of Chemical Engineering; Tarbiat Modares University; P.O. Box 14115-114, Tehran Islamic Republic of Iran
| | - M. Kokabi
- Polymer Engineering Department, Faculty of Chemical Engineering; Tarbiat Modares University; P.O. Box 14115-114, Tehran Islamic Republic of Iran
| | - Z. M. Hassan
- Immunology Department, Faculty of Medical Sciences; Tarbiat Modares University; P.O. Box: 14115-331, Tehran Islamic Republic of Iran
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18
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Nazari K, Kontogiannidou E, Haj Ahmad R, Andreadis D, Rasekh M, Bouropoulos N, van Der Merwe SM, Chang MW, Fatouros DG, Ahmad Z. Fibrous polymeric buccal film formulation, engineering and bio-interface assessment. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.09.046] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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McCoy CP, Irwin NJ, Donnelly L, Jones DS, Hardy JG, Carson L. Anti-Adherent Biomaterials for Prevention of Catheter Biofouling. Int J Pharm 2017; 535:420-427. [PMID: 29170113 DOI: 10.1016/j.ijpharm.2017.11.043] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 11/13/2017] [Accepted: 11/20/2017] [Indexed: 01/12/2023]
Abstract
Medical device-associated infections present a leading global healthcare challenge, and effective strategies to prevent infections are urgently required. Herein, we present an innovative anti-adherent hydrogel copolymer as a candidate catheter coating with complementary hydrophobic drug-carrying and eluting capacities. The amphiphilic block copolymer, Poloxamer 188, was chemically-derivatized with methacryloyl moieties and copolymerized with the hydrogel monomer, 2-hydroxyethyl methacrylate. Performance of the synthesized copolymers was evaluated in terms of equilibrium swelling, surface water wettability, mechanical integrity, resistance to encrustation and bacterial adherence, and ability to control release of the loaded fluoroquinolone antibiotic, ofloxacin. The developed matrices were able to provide significant protection from fouling, with observed reductions of over 90% in both adherence of the common urinary pathogen Escherichia coli and encrusting crystalline deposits of calcium and magnesium salts relative to the commonly employed hydrogel, poly (hydroxyethyl methacrylate). Additionally, the release kinetics of a loaded hydrophobic drug could be readily tuned through facile manipulation of polymer composition. This combinatorial approach shows significant promise in the development of suitable systems for prevention of catheter-associated infections.
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Affiliation(s)
- Colin P McCoy
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, Northern Ireland, UK.
| | - Nicola J Irwin
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, Northern Ireland, UK
| | - Louise Donnelly
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, Northern Ireland, UK
| | - David S Jones
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, Northern Ireland, UK
| | - John G Hardy
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, Northern Ireland, UK
| | - Louise Carson
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, Northern Ireland, UK
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20
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Vieira VMP, Hay LL, Smith DK. Multi-component hybrid hydrogels - understanding the extent of orthogonal assembly and its impact on controlled release. Chem Sci 2017; 8:6981-6990. [PMID: 29147525 PMCID: PMC5642149 DOI: 10.1039/c7sc03301j] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 08/18/2017] [Indexed: 12/20/2022] Open
Abstract
This paper reports self-assembled multi-component hybrid hydrogels including a range of nanoscale systems and characterizes the extent to which each component maintains its own unique functionality, demonstrating that multi-functionality can be achieved by simply mixing carefully-chosen constituents. Specifically, the individual components are: (i) pH-activated low-molecular-weight gelator (LMWG) 1,3;2,4-dibenzylidenesorbitol-4',4''-dicarboxylic acid (DBS-COOH), (ii) thermally-activated polymer gelator (PG) agarose, (iii) anionic biopolymer heparin, and (iv) cationic self-assembled multivalent (SAMul) micelles capable of binding heparin. The LMWG still self-assembles in the presence of PG agarose, is slightly modified on the nanoscale by heparin, but is totally disrupted by the micelles. However, if the SAMul micelles are bound to heparin, DBS-COOH self-assembly is largely unaffected. The LMWG endows hybrid materials with pH-responsive behavior, while the PG provides mechanical robustness. The rate of heparin release can be controlled through network density and composition, with the LMWG and PG behaving differently in this regard, while the presence of the heparin binder completely inhibits heparin release through complexation. This study demonstrates that a multi-component approach can yield exquisite control over self-assembled materials. We reason that controlling orthogonality in such systems will underpin further development of controlled release systems with biomedical applications.
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Affiliation(s)
- Vânia M P Vieira
- Department of Chemistry , University of York , Heslington , York , YO10 5DD , UK . ; http://www.york.ac.uk/chemistry/staff/academic/o-s/dsmith/
| | - Laura L Hay
- Department of Chemistry , University of York , Heslington , York , YO10 5DD , UK . ; http://www.york.ac.uk/chemistry/staff/academic/o-s/dsmith/
| | - David K Smith
- Department of Chemistry , University of York , Heslington , York , YO10 5DD , UK . ; http://www.york.ac.uk/chemistry/staff/academic/o-s/dsmith/
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21
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Nazari K, Kontogiannidou E, Ahmad RH, Gratsani A, Rasekh M, Arshad MS, Sunar BS, Armitage D, Bouropoulos N, Chang MW, Li X, Fatouros DG, Ahmad Z. Development and characterisation of cellulose based electrospun mats for buccal delivery of non-steroidal anti-inflammatory drug (NSAID). Eur J Pharm Sci 2017; 102:147-155. [DOI: 10.1016/j.ejps.2017.02.033] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 02/02/2017] [Accepted: 02/24/2017] [Indexed: 12/30/2022]
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22
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Zupančič O, Grieβinger JA, Rohrer J, Pereira de Sousa I, Danninger L, Partenhauser A, Sündermann NE, Laffleur F, Bernkop-Schnürch A. Development, in vitro and in vivo evaluation of a self-emulsifying drug delivery system (SEDDS) for oral enoxaparin administration. Eur J Pharm Biopharm 2016; 109:113-121. [PMID: 27693677 DOI: 10.1016/j.ejpb.2016.09.013] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 09/13/2016] [Accepted: 09/23/2016] [Indexed: 01/10/2023]
Abstract
AIM The aim of this study was to develop SEDDS for oral enoxaparin administration and evaluate it in vitro and in vivo. METHODS The emulsifying properties of SEDDS composed of long chain lipids (LC-SEDDS), medium chain lipids (MC-SEDDS), short chain lipids (SC-SEDDS) and no lipids (NL-SEDDS) were evaluated. Thereafter, enoxaparin was incorporated via hydrophobic ion pairing in the chosen SEDDS, which were evaluated regarding their mucus permeating properties, stability towards pancreatic lipase, drug release profile and cytotoxicity. Finally, in vivo performance of SEDDS was evaluated. RESULTS The average droplet size of chosen LC-SEDDS, MC-SEDDS and NL-SEDDS ranged between 30 and 40nm. MC-SEEDS containing 30% Captex 8000, 30% Capmul MCM, 30% Cremophor EL and 10% propylene glycol and NL-SEDDS containing 31.5% Labrafil 1944, 22.5% Capmul PG-8, 9% propylene glycol, 27% Cremophor EL and 10% DMSO exhibited 2-fold higher mucus diffusion than LC-SEDDS and were therefore chosen for further studies. The enoxaparin-dodecylamine complex (ENOX/DOA) was incorporated in a payload of 2% (w/w) into MC-SEDDS and NL-SEDDS. After 90min 97% of MC-SEDDS and 5% of NL-SEDDS were degraded by pancreatic lipase. Both MC-SEDDS and NL-SEDDS showed sustained in vitro enoxaparin release. Furthermore, orally administrated MC-SEDDS and NL-SEDDS yielded an absolute enoxaparin bioavailability of 2.02% and 2.25%, respectively. CONCLUSION According to the abovementioned findings, SEDDS could be considered as a potential oral LMWH delivery system.
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Affiliation(s)
- Ožbej Zupančič
- Department of Pharmaceutical Technology, Institute of Pharmacy, Leopold-Franzens-University Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | | | - Julia Rohrer
- Department of Pharmaceutical Technology, Institute of Pharmacy, Leopold-Franzens-University Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Irene Pereira de Sousa
- Department of Pharmaceutical Technology, Institute of Pharmacy, Leopold-Franzens-University Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Lukas Danninger
- Department of Pharmaceutical Technology, Institute of Pharmacy, Leopold-Franzens-University Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Alexandra Partenhauser
- Department of Pharmaceutical Technology, Institute of Pharmacy, Leopold-Franzens-University Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Nadine Elli Sündermann
- Division of Developmental Immunology, Center for Biomodels and Experimental Medicine (CBEM), Innsbruck Medical University, Innrain 80/82, 6020 Innsbruck, Austria
| | - Flavia Laffleur
- Department of Pharmaceutical Technology, Institute of Pharmacy, Leopold-Franzens-University Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Andreas Bernkop-Schnürch
- Department of Pharmaceutical Technology, Institute of Pharmacy, Leopold-Franzens-University Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria.
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23
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Emerging Implications for Extracellular Matrix-Based Technologies in Vascularized Composite Allotransplantation. Stem Cells Int 2016; 2016:1541823. [PMID: 26839554 PMCID: PMC4709778 DOI: 10.1155/2016/1541823] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 10/05/2015] [Indexed: 12/21/2022] Open
Abstract
Despite recent progress in vascularized composite allotransplantation (VCA), limitations including complex, high dose immunosuppression regimens, lifelong risk of toxicity from immunosuppressants, acute and most critically chronic graft rejection, and suboptimal nerve regeneration remain particularly challenging obstacles restricting clinical progress. When properly configured, customized, and implemented, biomaterials derived from the extracellular matrix (ECM) retain bioactive molecules and immunomodulatory properties that can promote stem cell migration, proliferation and differentiation, and constructive functional tissue remodeling. The present paper reviews the emerging implications of ECM-based technologies in VCA, including local immunomodulation, tissue repair, nerve regeneration, minimally invasive graft targeted drug delivery, stem cell transplantation, and other donor graft manipulation.
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24
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Matanović MR, Grabnar PA, Voinovich D, Golob S, Mijovski MB, Grabnar I. Development and preclinical pharmacokinetics of a novel subcutaneous thermoresponsive system for prolonged delivery of heparin. Int J Pharm 2015; 496:583-92. [DOI: 10.1016/j.ijpharm.2015.10.062] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 10/20/2015] [Accepted: 10/26/2015] [Indexed: 02/03/2023]
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