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Zakeri-Siavashani A, Chamanara M, Nassireslami E, Shiri M, Hoseini-Ahmadabadi M, Paknejad B. Three dimensional spongy fibroin scaffolds containing keratin/vanillin particles as an antibacterial skin tissue engineering scaffold. INT J POLYM MATER PO 2020. [DOI: 10.1080/00914037.2020.1817021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
| | - Mohsen Chamanara
- Department of Pharmacology, School of Medicine, AJA University of Medical Sciences, Tehran, Iran
| | - Ehsan Nassireslami
- Department of Pharmacology, School of Medicine, AJA University of Medical Sciences, Tehran, Iran
| | - Mahdi Shiri
- Department of Pharmacology, School of Medicine, AJA University of Medical Sciences, Tehran, Iran
| | | | - Babak Paknejad
- Department of Pharmacology, School of Medicine, AJA University of Medical Sciences, Tehran, Iran
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Boussahel A, Ibegbu DM, Lamtahri R, Maucotel J, Chuquet J, Lefranc B, Leprince J, Roldo M, Mével JCL, Gorecki D, Barbu E. Investigations of octylglyceryl dextran-graft-poly(lactic acid) nanoparticles for peptide delivery to the brain. Nanomedicine (Lond) 2017; 12:879-892. [DOI: 10.2217/nnm-2016-0406] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: Develop modified dextran nanoparticles showing potential to assist with drug permeation across the blood–brain barrier for the delivery of neuropeptides. Methods: Nanoparticles loaded by emulsification with model macromolecular actives were characterized in terms of stability, cytotoxicity and drug-release behavior. Peptide-loaded nanoformulations were tested in an in vivo trout model and in food-deprived mice. Results: Nanoformulations loaded with model peptides showed good stability and appeared nontoxic in low concentration against human brain endothelial cells. They were found to preserve the bioactivity of loaded peptides (angiotensin II) as demonstrated in vivo using a trout model, and to induce a transient reduction of food consumption in mice when loaded with an anorexigenic octaneuropeptide. Conclusion: Octylglyceryl dextran-graft-poly(lactic acid) nanoparticles formulated by emulsification demonstrate potential for peptide delivery.
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Affiliation(s)
- Asme Boussahel
- School of Pharmacy & Biomedical Sciences, University of Portsmouth, St Michael's Building, White Swan Road, PO1 2DT, UK
| | - Daniel M Ibegbu
- School of Pharmacy & Biomedical Sciences, University of Portsmouth, St Michael's Building, White Swan Road, PO1 2DT, UK
| | - Rhita Lamtahri
- Laboratory of Neuronal & Neuroendocrine Differentiation & Communication, INSERM U1239, Normandy University, 76000 Rouen, France
| | - Julie Maucotel
- Laboratory of Neuronal & Neuroendocrine Differentiation & Communication, INSERM U1239, Normandy University, 76000 Rouen, France
| | - Julien Chuquet
- Laboratory of Neuronal & Neuroendocrine Differentiation & Communication, INSERM U1239, Normandy University, 76000 Rouen, France
| | - Benjamin Lefranc
- Laboratory of Neuronal & Neuroendocrine Differentiation & Communication, INSERM U1239, Normandy University, 76000 Rouen, France
| | - Jérôme Leprince
- Laboratory of Neuronal & Neuroendocrine Differentiation & Communication, INSERM U1239, Normandy University, 76000 Rouen, France
| | - Marta Roldo
- School of Pharmacy & Biomedical Sciences, University of Portsmouth, St Michael's Building, White Swan Road, PO1 2DT, UK
| | - Jean-Claude Le Mével
- Neurophysiology Laboratory, LaTIM UMR 1101, University of Brest, 29238 Cedex 3, France
| | - Darek Gorecki
- School of Pharmacy & Biomedical Sciences, University of Portsmouth, St Michael's Building, White Swan Road, PO1 2DT, UK
| | - Eugen Barbu
- School of Pharmacy & Biomedical Sciences, University of Portsmouth, St Michael's Building, White Swan Road, PO1 2DT, UK
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Shaked E, Shani Y, Zilberman M, Scheinowitz M. Poly(methyl methacrylate) particles for local drug delivery using shock wave lithotripsy:In vitroproof of concept experiment. J Biomed Mater Res B Appl Biomater 2014; 103:1228-37. [DOI: 10.1002/jbm.b.33301] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2014] [Revised: 08/14/2014] [Accepted: 09/12/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Eliav Shaked
- Department of Biomedical Engineering, Faculty of Engineering; Tel-Aviv University; Tel-Aviv Israel
| | - Yoav Shani
- Department of Biomedical Engineering, Faculty of Engineering; Tel-Aviv University; Tel-Aviv Israel
| | - Meital Zilberman
- Department of Biomedical Engineering, Faculty of Engineering; Tel-Aviv University; Tel-Aviv Israel
| | - Mickey Scheinowitz
- Department of Biomedical Engineering, Faculty of Engineering; Tel-Aviv University; Tel-Aviv Israel
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Trachtenberg JE, Mountziaris PM, Kasper FK, Mikos AG. Fiber-Based Composite Tissue Engineering Scaffolds for Drug Delivery. Isr J Chem 2013. [DOI: 10.1002/ijch.201300051] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Nath SD, Linh NTB, Sadiasa A, Lee BT. Encapsulation of simvastatin in PLGA microspheres loaded into hydrogel loaded BCP porous spongy scaffold as a controlled drug delivery system for bone tissue regeneration. J Biomater Appl 2013; 28:1151-63. [DOI: 10.1177/0885328213499272] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The main objective of this study was to fabricate a controlled drug delivery which is simultaneously effective for bone regeneration. We have encapsulated simvastatin, which enhances osteoblastic activity, in the poly (lactic-co-glycolic acid) microspheres. Loading of these microspheres inside the spongy scaffold of biphasic calcium phosphate with the help of Gelatin (Gel) hydrogel controls the delivery of the drug, and ensures a more favorable drug release profile. As a result, some significant benefits have been achieved, such as higher mechanical strength, excellent biocompatibility in in vitro experiments. For determining the characteristics of the composite scaffold, several analysis, such as scanning electron microscope, EDX, X-ray diffraction, FT-IR, and porosity were carried out. The in vitro drug release profile clearly indicates that simvastatin release from the microsphere was more controlled and prolonged after loading in the scaffold. Biocompatibility was certainly higher for the final composite scaffold compared to drug unloaded scaffold, as assessed through MTT assay and Confocal imaging with MC3T3-E1 pre-osteoblast cells. Cell attachment and proliferation were certainly higher in the presence of drug loaded microspheres. Bone remodeling gene and protein expression were observed by real-time polymerase chain reaction and Western blot respectively. Simvastatin loaded scaffold exhibited the best results in every determination which was carried out.
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Affiliation(s)
- Subrata D Nath
- Department of Biomedical Engineering and Materials, Soonchunhyang University, Republic of Korea
| | - Nguyen TB Linh
- Department of Biomedical Engineering and Materials, Soonchunhyang University, Republic of Korea
| | - Alexander Sadiasa
- Department of Biomedical Engineering and Materials, Soonchunhyang University, Republic of Korea
| | - Byong T Lee
- Department of Biomedical Engineering and Materials, Soonchunhyang University, Republic of Korea
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Kim I, Kim HJ, Kim HM. Array of amorphous calcium phosphate particles improves cellular activity on a hydrophobic surface. J Biomed Mater Res B Appl Biomater 2010; 93:113-21. [PMID: 20119940 DOI: 10.1002/jbm.b.31565] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Poor interaction between cells and surfaces, especially hydrophobic surfaces, results in delayed proliferation and increased apoptosis due to low cell adhesion signaling. To improve cell adhesion, hydrophilic array of amorphous calcium phosphate (ACP) was fabricated on a surface. A phosphate-buffered solution containing calcium ions was prepared at low temperature to prevent spontaneous precipitation. Then, the ion solution was heated to generate nuclei of ACP nanoparticles. The ACP nanoparticles adhered to the hydrophobic polystyrene surface forming an array composed of ACP particles. Multiple treatments of these nuclei with fresh CaP ion solutions increased the diameter and decreased the solubility of ACP particles enough to mediate cellular adhesion. The particle density in the array was dependent on the ion concentration of the CaP ion solutions. The ACP array improved a wide variety of activities when osteoblastic MC3T3-E1 cells were cultured on the ACP array fabricated on a hydrophobic bacteriological dish surface, compared to those cultured without the ACP array in vitro. The use of ACP array resulted in a lower apoptosis and also increased the spreading of cells to form stress fibers and focal contacts. Cells cultured on the ACP array proliferated more than cells cultured on a hydrophobic surface without the ACP array. The ACP array increased the expression of markers of differentiation in osteoblast. These results indicate that an array of ACP can be used as a coating material for enhancing biocompatibility in tissue engineering or biomaterials rather than modifying the surface with organic molecules.
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Affiliation(s)
- InAe Kim
- Laboratory for the Study of Molecular Biointerfaces, Department of Oral Histology and Developmental Biology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul 110-749, Korea
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Shah PN, Puntel AA, Lopina ST, Yun YH. Development and in vitro cytotoxicity of microparticle drug delivery system for proteins using l-tyrosine polyphosphate. Colloid Polym Sci 2009. [DOI: 10.1007/s00396-009-2082-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Zilberman M, Grinberg O. HRP-Loaded Bioresorbable Microspheres: Effect of Copolymer Composition and Molecular Weight on Microstructure and Release Profile. J Biomater Appl 2007; 22:391-407. [PMID: 17494966 DOI: 10.1177/0885328207077591] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Poly(DL-lactic-co-glycolic acid) microspheres are prepared using a double-emulsion technique and are loaded with the model enzyme horseradish peroxidase (HRP). These microspheres can be used alone or as coatings for bioresorbable fibers that may be used as scaffolds for tissue regeneration applications. The present study focuses on the effect of the copolymer's composition and initial molecular weight on the microsphere structure, encapsulation efficiency, and cumulative protein release for 12 weeks. The release profiles generally exhibits an initial burst effect accompanied by slow release over an extended period of time, during which diffusion rather than degradation controlled HRP release from these structures. An increase in the initial molecular weight or in the copolymer's lactic acid content results in larger microspheres with smoother surfaces, and a decrease in the burst release and in the total HRP release. Molecular weight is found to have a stronger effect than copolymer composition. We demonstrate that it is possible to obtain versatile release profiles, which can be tailored for specific applications by choosing the right initial molecular weight and copolymer composition.
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Affiliation(s)
- Meital Zilberman
- Department of Biomedical Engineering, Faculty of Engineering Tel-Aviv University, Tel-Aviv 69978, Israel.
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Abstract
A stent is a medical device designed to serve as a temporary or permanent internal scaffold to maintain or increase the lumen of a body conduit. Metallic coronary stents were first introduced to prevent arterial dissections and to eliminate vessel recoil and intimal hyperplasia associated with percutaneous transluminal coronary angioplasty. The stent application range has expanded as more experience was gained, and encouraging results have been obtained in the treatment of vascular diseases. Stents are currently used for support of additional body conduits, including the urethra, trachea, and esophagus. The rationale for bioresorbable stents is the support of a body conduit only during its healing process. The stent mass and strength decrease with time, and the mechanical load is gradually transferred to the surrounding tissue. Bioresorbable stents also enable longer term delivery of drugs to the conduit wall from an internal reservoir and abolish the need for a second surgery to remove the device. The present review describes recent advances in bioresorbable stents, focusing on drug-eluting bioresorbable stents for various applications. Controlled release of an active agent from a stent can be used to enhance healing of the surrounding tissues, to increase the implant's biocompatibility, as well as to help cure certain diseases. Because a lot of research in this field has been done by us, examples for these functions are described based mainly on developments in our laboratories.
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Affiliation(s)
- Meital Zilberman
- Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel.
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