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Tateiwa D, Kaito T. Advances in bone regeneration with growth factors for spinal fusion: A literature review. N Am Spine Soc J 2023; 13:100193. [PMID: 36605107 DOI: 10.1016/j.xnsj.2022.100193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 12/13/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022]
Abstract
Bone tissue is regenerated via the spatiotemporal involvement of various cytokines. Among them, the bone morphogenetic protein (BMP), which plays a vital role in the bone regeneration process, has been applied clinically for the treatment of refractory orthopedic conditions. Although BMP therapy using a collagen carrier has shown efficiency in bone regeneration over the last two decades, a major challenge-considerable side effects associated with the acute release of high doses of BMPs-has also been revealed. To improve BMP efficiency, the development of new carriers and biologics that can be used in conjunction with BMPs is currently underway. In this review, we describe the current status and future prospects of bone regeneration therapy, with a focus on BMPs. Furthermore, we outline the characteristics and molecular signaling pathways involving BMPs, clinical applications of BMPs in orthopedics, clinical results of BMP use in human spinal surgeries, drugs combined with BMPs to provide synergistic effects, and novel BMP carriers.
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Koshari SHS, Shi X, Jiang L, Chang D, Rajagopal K, Lenhoff AM, Wagner NJ. Design of PLGA-Based Drug Delivery Systems Using a Physically-Based Sustained Release Model. J Pharm Sci 2022; 111:345-357. [PMID: 34516986 PMCID: PMC8792208 DOI: 10.1016/j.xphs.2021.09.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 07/16/2021] [Accepted: 09/04/2021] [Indexed: 02/03/2023]
Abstract
An extensive data set has been developed and used to further the progress of a model-informed design of controlled drug release. An improved drug-release model with mechanistic modeling of hydrolytic polymer degradation is used and validated by comparing model predictions to in vitro experiments. Combining parameter estimates from the literature with model fits to the data set, this study can aid in achieving a priori design of controlled drug release from a model PLGA release system. A systematic series of model release systems were formulated with FITC-labeled dextran, as a surrogate for biopharmaceuticals, in PLGA rods over a broad range of compositions. While general comparisons between the model and experiments were favorable, important discrepancies were identified for several formulations with significant first-phase drug release. Supported by cross-sectional fluorescence microscopy images of the FITC-dextran distribution within the rods, this first-phase release was attributed to a combination of two main factors: (1) percolation of the drug particles and (2) swelling of and pore formation in the rods due to water uptake. These observations indicate the importance of careful selection of the PLGA polymer grade when designing drug release systems but also reflect a need for better understanding of phenomena such as pore formation. Adapting model parameters, without modifying the physical processes included in the model, enabled accurate fitting of the experimental data for all formulations, highlighting the applicability of the model.
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Affiliation(s)
- Stijn H. S. Koshari
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, USA
| | - Xutao Shi
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, USA
| | - Linda Jiang
- Eurofins Lancaster Laboratories Inc., Lancaster, Pennsylvania 17605, USA
| | - Debby Chang
- Pharmaceutical Development, Genentech, South San Francisco, California 94080, USA
| | - Karthikan Rajagopal
- Pharmaceutical Development, Genentech, South San Francisco, California 94080, USA
| | - Abraham M. Lenhoff
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, USA, Corresponding author at: Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA, (A.M. Lenhoff)
| | - Norman J. Wagner
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, USA
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Wang K, Bao G, Fan Q, Zhu L, Yang L, Liu T, Zhang Z, Li G, Chen X, Xu X, Xu X, He B, Zheng Y. Feasibility evaluation of a Cu-38 Zn alloy for intrauterine devices: In vitro and in vivo studies. Acta Biomater 2022; 138:561-575. [PMID: 34774783 DOI: 10.1016/j.actbio.2021.11.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 10/29/2021] [Accepted: 11/04/2021] [Indexed: 11/01/2022]
Abstract
The existing adverse effects of copper in copper-containing intrauterine devices (Cu-IUDs) have raised concerns regarding their use. These adverse effects include burst release of cupric ions (Cu2+) at the initial stage and an increasingly rough surface of the Cu-IUDs. In this study, we investigated the use of two copper alloys, Cu-38 Zn and H62 as the new upgrading or alternative material for IUDs. Their corrosive properties were studied in simulated uterine fluid (SUF) by using electrochemical methods, with pure Cu as a control. We studied the in vitro long-term corrosion behaviors in SUF, cytotoxicity to uterine cells (human endometrial epithelial cells and human endometrial stromal cells), in vivo biocompatibility and contraceptive efficacy of pure Cu, H62, and Cu-38 Zn. In the first month, the burst release rate of Cu2+ in the Cu-38 Zn group was significantly lower than those in the pure Cu and H62 groups. The in vitro cytocompatibility Cu-38 Zn was better than that of pure Cu and H62. Moreover, Cu-38 Zn showed improved tissue biocompatibility in vivo experiments. Therefore, the contraceptive efficacy of the Cu-38 Zn is still maintained as high as the pure Cu while the adverse effects are significantly eased, suggesting that Cu-38 Zn can be a suitable potential candidate material for IUDs. STATEMENT OF SIGNIFICANCE: The existing adverse effects associated with the intrinsic properties of copper materials for copper-containing intrauterine devices (Cu-IUD) are of concern in their employment. Such as, burst release of cupric ions (Cu2+) at the initial stage and an increasingly rough surface of the Cu-IUD. In this work, Cu alloyed with a high amount of bioactive Zn was used for a Cu-IUD. The Cu-38 Zn alloy exhibited reduced burst release of Cu2+ within the first month compared with the pure Cu and H62. Furthermore, the Cu-38 Zn alloy displayed significantly improved biocompatibility and a much smoother surface. Therefore, high antifertility efficacy of the Cu-38 Zn alloy was well maintained, while the adverse effects are significantly eased, suggesting that the Cu-38 Zn alloy is promising for a Cu-IUD.
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Herdiana Y, Wathoni N, Shamsuddin S, Muchtaridi M. Drug release study of the chitosan-based nanoparticles. Heliyon 2022; 8:e08674. [PMID: 35028457 PMCID: PMC8741465 DOI: 10.1016/j.heliyon.2021.e08674] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/08/2021] [Accepted: 12/22/2021] [Indexed: 02/08/2023] Open
Abstract
Recently, multifunctional drug delivery systems (DDSs) have been designed to provide a comprehensive approach with multiple functionalities, including diagnostic imaging, targeted drug delivery, and controlled drug release. Chitosan-based drug nanoparticles (CSNPs) systems are employed as diagnostic imaging and delivering the drug to particular targeted sites in a regulated manner. Drug release is an important factor in ensuring high reproducibility, stability, quality control of CSNPs, and scientific-based for developing CSNPs. Several factors influence drug release from CSNPs, including composition, composition ratio, ingredient interactions, and preparation methods. Early, CSNPs were used for improving drug solubility, stability, pharmacokinetics, and pharmacotherapeutics properties. Chitosan has been developed toward a multifunctional drug delivery system by exploring positively charged properties and modifiable functional groups. Various modifications to the polymer backbone, charge, or functional groups will undoubtedly affect the drug release from CSNPs. The drug release from CSNPs has a significant influence on its therapeutic actions. Our review's objective was to summarize and discuss the relationship between the modification in CSNPs as multifunctional delivery systems and drug release properties and kinetics of the drug release model. Kinetic models help describe the release rate, leading to increased efficiency, accuracy, the safety of the dose, optimizing the drug delivery device's design, evaluating the drug release rate, and improvement of patient compatibility. In conclusion, almost all CSNPs showed bi-phasic release, initial burst release drug in a particular time followed controlled manner release in achieving the expected release, stimuli external can be applied. CSNPs are a promising technique for multifunctional drug delivery systems.
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Affiliation(s)
- Yedi Herdiana
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang, 45363, Indonesia
| | - Nasrul Wathoni
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang, 45363, Indonesia
- Functional Nano Powder University Center of Excellence (FiNder U CoE), Universitas Padjadjaran, Indonesia
| | - Shaharum Shamsuddin
- School of Health Sciences, Universiti Sains Malaysia, 16150, Kubang Kerian, Kelantan, Malaysia
- USM-RIKEN Interdisciplinary Collaboration on Advanced Sciences (URICAS), 11800, USM, Penang, Malaysia
| | - Muchtaridi Muchtaridi
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang, 45363, Indonesia
- Functional Nano Powder University Center of Excellence (FiNder U CoE), Universitas Padjadjaran, Indonesia
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Cao Z, Tang X, Zhang Y, Yin T, Gou J, Wang Y, He H. Novel injectable progesterone-loaded nanoparticles embedded in SAIB-PLGA in situ depot system for sustained drug release. Int J Pharm 2021; 607:121021. [PMID: 34416333 DOI: 10.1016/j.ijpharm.2021.121021] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 08/11/2021] [Accepted: 08/15/2021] [Indexed: 12/18/2022]
Abstract
Poly (lactic-co-glycolic acid) (PLGA) nanoparticles (NPs) have attracted considerable interest in the medical community as a sustained-release drug delivery system for localized treatment. However, it is currently a grand challenge to simultaneously achieve low-dose drugs, stable and prolonged drug release, and long-term retention circumventing uptake by macrophages. Here, we construct a solvent-exchange in-situ depot system by incorporating progesterone (PRG) loaded PLGA NPs into a sucrose acetate isobutyrate (SAIB) and PLGA matrix for the long term treatment of Assisted Reproductive Technology (ART). The results showed that different solvent and PLGA contents could affect the drug release rate of PRG NPs-SAIB-PLGA in-situ depot system (PSPIDS). When DMSO was used as solvent with the addition of 8% PLGA to the depot, PSPIDS could achieve a constant drug release with no burst for 2 weeks in vitro. After a single intramuscular injection, such PSPIDS showed higher drug concentration and AUC (6773.0 ± 348.8 μg/L·h) over the entire 7-day testing period compared with the commercial multiple-day-dosing intramuscular PRG-oil solution (1914.5 ± 180.7 μg/L·h) in vivo. Importantly, PSPIDS could be administered at a dose of 3.65 mg/kg, which was one fourth of dose required for PRG-oil solution. The results demonstrate that PRG NPs could successfully achieve both reduced administered dosage and burst release, and therefore that PSPIDS is a promising long-acting composite system for hydrophobic drugs.
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Affiliation(s)
- Zhijun Cao
- Department of Pharmaceutics Science, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Xing Tang
- Department of Pharmaceutics Science, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yu Zhang
- Department of Pharmaceutics Science, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Tian Yin
- Department of Functional Food and Wine, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Jingxin Gou
- Department of Pharmaceutics Science, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yanjiao Wang
- Department of Pharmaceutics Science, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Haibing He
- Department of Pharmaceutics Science, Shenyang Pharmaceutical University, Shenyang 110016, China.
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Qnouch A, Solarczyk V, Verin J, Tourrel G, Stahl P, Danede F, Willart JF, Lemesre PE, Vincent C, Siepmann J, Siepmann F. Dexamethasone-loaded cochlear implants: How to provide a desired " burst release". Int J Pharm X 2021; 3:100088. [PMID: 34553137 PMCID: PMC8441626 DOI: 10.1016/j.ijpx.2021.100088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 06/03/2021] [Accepted: 06/06/2021] [Indexed: 12/20/2022]
Abstract
Cochlear implants containing iridium platinum electrodes are used to transmit electrical signals into the inner ear of patients suffering from severe or profound deafness without valuable benefit from conventional hearing aids. However, their placement is invasive and can cause trauma as well as local inflammation, harming remaining hair cells or other inner ear cells. As foreign bodies, the implants also induce fibrosis, resulting in a less efficient conduction of the electrical signals and, thus, potentially decreased system performance. To overcome these obstacles, dexamethasone has recently been embedded in this type of implants: into the silicone matrices separating the metal electrodes (to avoid short circuits). It has been shown that the resulting drug release can be controlled over several years. Importantly, the dexamethasone does not only act against the immediate consequences of trauma, inflammation and fibrosis, it can also be expected to be beneficial for remaining hair cells in the long term. However, the reported amounts of drug released at “early” time points (during the first days/weeks) are relatively low and the in vivo efficacy in animal models was reported to be non-optimal. The aim of this study was to increase the initial “burst release” from the implants, adding a freely water-soluble salt of a phosphate ester of dexamethasone. The idea was to facilitate water penetration into the highly hydrophobic system and, thus, to promote drug dissolution and diffusion. This approach was efficient: Adding up to 10% dexamethasone sodium phosphate to the silicone matrices substantially increased the resulting drug release rate at early time points. This can be expected to improve drug action and implant functionality. But at elevated dexamethasone sodium phosphate loadings device swelling became important. Since the cochlea is a tiny and sensitive organ, a potential increase in implant dimensions over time must be limited. Hence, a balance has to be found between drug release and implant swelling.
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Affiliation(s)
- A Qnouch
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - V Solarczyk
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - J Verin
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - G Tourrel
- Oticon Medical, R&D, 06224 Vallauris, France
| | - P Stahl
- Oticon Medical, R&D, 06224 Vallauris, France
| | - F Danede
- Univ. Lille, UMR CNRS 8207, UMET, F-59655 Villeneuve d'Ascq, France
| | - J F Willart
- Univ. Lille, UMR CNRS 8207, UMET, F-59655 Villeneuve d'Ascq, France
| | - P E Lemesre
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - C Vincent
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - J Siepmann
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - F Siepmann
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
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Wu L, Morrow BR, Jefferson MM, Li F, Hong L. Antibacterial Collagen Composite Membranes Containing Minocycline. J Pharm Sci 2021; 110:2177-84. [PMID: 33373607 DOI: 10.1016/j.xphs.2020.12.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 12/16/2020] [Accepted: 12/21/2020] [Indexed: 12/14/2022]
Abstract
Collagen membranes have been used as bioresorbable barrier membranes in guided tissue/bone regeneration. However, the collagen membranes currently used in clinics lack an active antibacterial function, although infection at surgical sites presents a realistic challenge for guided tissue/bone regeneration. In this study, we successfully prepared novel and advanced collagen composite membranes from collagen and complexes of heparin and chelates of minocycline and Ca2+ ions. These membranes were characterized for chemical structures, morphology, elemental compositions and tensile strength. In vitro release studies were conducted to evaluate the release kinetics of minocycline from these membranes. Agar disk diffusion assays were used to assess their sustained antibacterial capability against model pathogenic bacteria Staphylococcus aureus. The chemical and physical characterization confirmed the successful synthesis of minocycline-loaded collagen composite membranes, namely NCCM-1 and NCCM-2. Both membranes had weaker tensile strength as compared with commercial collagen membranes. They achieved sustained release of minocycline for at least 4 weeks in simulated body fluid (pH 7.4) at 37°C. Moreover, both membranes demonstrated potent sustained antibacterial effects against Staphylococcus aureus. These results suggested that the advanced collagen composite membranes containing minocycline can be exploited as novel guided tissue regeneration membranes or wound dressing by providing additional antibacterial functions.
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Saeed M, Mirzadeh H, Zandi M, Barzin J. PEGylated curcumin-loaded nanofibrous mats with controlled burst release through bead knot-on-spring design. Prog Biomater 2020; 9:175-85. [PMID: 33070246 DOI: 10.1007/s40204-020-00140-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 10/07/2020] [Indexed: 10/23/2022] Open
Abstract
APEGylatedcurcumin (PCU) loaded electrospuns based on poly(ε-caprolactone) (PCL) andpolyvinyl alcohol (PVA) were fabricated for wound dressing applications. The main reason for this wound dressing design is antibacterialactivity enhancement, and wound exudates management. PEGylation increases curcuminsantibacterial properties and PVA can help exudates management. For optimal wound dressing, first, response surface methodology (RSM) was applied to optimize the electrospinning parameters to achieve appropriate nanofibrous mats. Then a three-layer electrospun was designed by considering the water absorbability, PCU release profile as well as antibacterial and biocompatibility of the final wound dressing. The burst release in controlled release systems could be evaluated for prevention of the higher initial drug release and control the effective life time. The PCU release results illustrated that the bead knot plays a positive role in controlling the release profile andby increase in the number of beads per unit area from 3000 to 9000 mm-2,the PCU burst release will be reduced; Also in vitro studies show that optimized three-layer dressing based on PCL/PVA/PCU can support water vapour transmission rate in optimal range and also absorb more than three times exudates in comparison with mono-layerdressing. Antibacterial tests show that the electrospun wound dressing containing 5% PCU exhibits100% antibacterial activityas well as cell viability level within an acceptable range.
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Yang X, Almassri HNS, Zhang Q, Ma Y, Zhang D, Chen M, Wu X. Electrosprayed naringin-loaded microsphere/SAIB hybrid depots enhance bone formation in a mouse calvarial defect model. Drug Deliv 2019; 26:137-146. [PMID: 30799644 PMCID: PMC6394313 DOI: 10.1080/10717544.2019.1568620] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The burst release of active osteogenic factors, which is not beneficial to osteogenesis, is commonly encountered in bone tissue engineering. The aims of this study were to prepare naringin-loaded microsphere/sucrose acetate isobutyrate (Ng-m-SAIB) hybrid depots, reduce the burst release of naringin (Ng), and improve osteogenesis. The morphology and size distributions of electrosprayed Ng-microspheres were characterized by scanning electron microscopy (SEM). The Ng-microspheres and Ng-m-SAIB depots were characterized by Fourier transform infrared spectroscopy (FTIR) and in vitro release studies. In vitro osteoblast-microsphere interactions and in vivo osteogenesis were assessed after implantation of Ng-m-SAIB depots. The addition of sucrose acetate isobutyrate (SAIB) to monodisperse Ng-microspheres did not cause a change in the chemical structure. The performances of the microspheres in osteoblast-microsphere interactions were better when the naringin content was 4% than when it was at 2% and 6%. On the first day following the loading of Ng-microspheres (2%, 4%, and 6%) into SAIB depots, the burst release was reduced dramatically from 70.9% to 6.3%, 73.1% to 7.2%, and 73.9% to 9.9%, respectively. In addition, after 8 weeks, the new bone formation rate in the calvarial defects of SD rats receiving Ng-m-SAIB was 53.1% compared to 21.2% for the control group and 16.1% for the microsphere-SAIB group. These results demonstrated that Ng-m-SAIB hybrid depots may have promise in bone regeneration applications.
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Affiliation(s)
- Xue Yang
- a Department of Prosthodontics , Stomatological Hospital of Chongqing Medical University , Chongqing , China.,b Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences , Chongqing , China.,c Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education , Chongqing , China
| | - Huthayfa N S Almassri
- a Department of Prosthodontics , Stomatological Hospital of Chongqing Medical University , Chongqing , China.,b Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences , Chongqing , China.,c Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education , Chongqing , China
| | - Qiongyue Zhang
- a Department of Prosthodontics , Stomatological Hospital of Chongqing Medical University , Chongqing , China.,b Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences , Chongqing , China.,c Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education , Chongqing , China
| | - Yihui Ma
- a Department of Prosthodontics , Stomatological Hospital of Chongqing Medical University , Chongqing , China.,b Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences , Chongqing , China.,c Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education , Chongqing , China
| | - Dan Zhang
- a Department of Prosthodontics , Stomatological Hospital of Chongqing Medical University , Chongqing , China.,b Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences , Chongqing , China.,c Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education , Chongqing , China
| | - Mingsheng Chen
- a Department of Prosthodontics , Stomatological Hospital of Chongqing Medical University , Chongqing , China.,b Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences , Chongqing , China.,c Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education , Chongqing , China
| | - Xiaohong Wu
- a Department of Prosthodontics , Stomatological Hospital of Chongqing Medical University , Chongqing , China.,b Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences , Chongqing , China.,c Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education , Chongqing , China
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Chronopoulou L, Domenici F, Giantulli S, Brasili F, D'Errico C, Tsaouli G, Tortorella E, Bordi F, Morrone S, Palocci C, Silvestri I. PLGA based particles as "drug reservoir" for antitumor drug delivery: characterization and cytotoxicity studies. Colloids Surf B Biointerfaces 2019; 180:495-502. [PMID: 31103709 DOI: 10.1016/j.colsurfb.2019.05.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 05/05/2019] [Accepted: 05/06/2019] [Indexed: 12/16/2022]
Abstract
Doxorubicin (DOX) is commonly used to treat several tumor types, but its severe side effects, primarily cardiotoxicity, represent a major limitation for its use in clinical settings. In this study we developed and characterized biodegradable and stable poly(D,L-lactic-co-glycolic) acid (PLGA) submicrocarriers employing an osmosis-based patented methodology, which allowed to optimize the drug loading efficiency up to 99%. Proceeding from this, we evaluated on MCF-7, a human breast cancer cell line, the ability of PLGA to promote the internalization of DOX and to improve its cytotoxicity in vitro. We found that the in vitro uptake efficiency is dramatically increased when DOX is loaded within PLGA colloidal carriers, which adhere to the cell membrane behaving as an efficient drug reservoir. In fact, the particles provide a diffusion-driven, sustained release of DOX across the cell membrane, resulting in high drug concentration. Accordingly, the cytotoxic analysis clearly showed that DOX-loaded PLGA exhibit a lower 50% inhibitory concentration than free DOX. The decay time of cell viability was successfully compared with DOX diffusion time constant from PLGA. The overall in vitro results highlight the potential of DOX-loaded PLGA particles to be employed as vectors with improved antitumor efficacy.
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Affiliation(s)
- Laura Chronopoulou
- Department of Chemistry , Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Fabio Domenici
- Department of Physics, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy; Department of Chemical Science and Technology, University of Rome Tor Vergata, Viale della ricerca scientifica 1, 00133, Rome, Italy.
| | - Sabrina Giantulli
- Department of Molecular Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161 Rome, Italy
| | - Francesco Brasili
- Department of Physics, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy; Department of Chemical Science and Technology, University of Rome Tor Vergata, Viale della ricerca scientifica 1, 00133, Rome, Italy
| | - Chiara D'Errico
- Department of Chemistry , Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Georgia Tsaouli
- Department of Molecular Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161 Rome, Italy
| | - Elisabetta Tortorella
- Department of Chemical Science and Technology, University of Rome Tor Vergata, Viale della ricerca scientifica 1, 00133, Rome, Italy
| | - Federico Bordi
- Department of Physics, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Stefania Morrone
- Department of Experimental Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161 Rome, Italy
| | - Cleofe Palocci
- Department of Chemistry , Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy.
| | - Ida Silvestri
- Department of Molecular Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161 Rome, Italy.
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Phaechamud T, Thurein SM, Chantadee T. Role of clove oil in solvent exchange-induced doxycycline hyclate-loaded Eudragit RS in situ forming gel. Asian J Pharm Sci 2018; 13:131-42. [PMID: 32104386 DOI: 10.1016/j.ajps.2017.09.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 08/21/2017] [Accepted: 09/19/2017] [Indexed: 01/09/2023] Open
Abstract
Role of clove oil (CO) in doxycycline hyclate (DH)-loaded Eudragit RS (ERS) in situ forming gel (ISG) was investigated. CO could solubilize ERS and increase the viscosity of ISG and also minimize DH burst release with sustainable DH release. ISGs comprising CO could expel through the 27-gauge needle and transform into matrix depot in simulated crevicular fluid. Antimicrobial activities against all test bacterias were increased when increasing CO and N-methyl pyrrolidone (NMP) ratio. DH-loaded ERS ISG comprising CO could be used as a local drug delivery system for periodontitis treatment.
Solvent exchange induced in situ forming gel (ISG) is the promising drug delivery system for periodontitis treatment owing to the prospect of maintaining an effective high drug level in the gingival crevicular fluid. In the present study, the influence of clove oil (CO) on the characteristics of doxycycline hyclate (DH)-loaded ISG comprising Eudragit RS (ERS) was investigated including viscosity/rheology, syringeability, in vitro gel formation/drug release, matrix formation/solvent diffusion and antimicrobial activities. CO could dissolve ERS and increase the viscosity of ISG and its hydrophobicity could also retard the diffusion of solvent and hinder the drug diffusion; thus, the minimization of burst effect and sustained drug release were achieved effectively. All the prepared ISGs comprising CO could expel through the 27-gauge needle for administration by injection and transform into matrix depot after exposure to the simulated gingival crevicular fluid. The antimicrobial activities against Staphylococcus aureus, Escherichia coli, Streptococcus mutans and Porphyromonas gingivalis were increased when the ratio of CO and N-methyl pyrrolidone (NMP) was decreased from 1:1 to 1:10 owing to higher diffusion of DH except that for C. albicans was increased as CO amount was higher. Therefore, CO could minimize the burst while prolonging the drug release of DH-loaded ERS ISG for use as a local drug delivery system for periodontitis treatment.
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