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Che Z, Sun Q, Zhao Z, Wu Y, Xing H, Song K, Chen A, Wang B, Cai M. Growth factor-functionalized titanium implants for enhanced bone regeneration: A review. Int J Biol Macromol 2024; 274:133153. [PMID: 38897500 DOI: 10.1016/j.ijbiomac.2024.133153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 06/02/2024] [Accepted: 06/12/2024] [Indexed: 06/21/2024]
Abstract
Titanium and titanium alloys are widely favored materials for orthopedic implants due to their exceptional mechanical properties and biological inertness. The additional benefit of sustained local release of bioactive substances further promotes bone tissue formation, thereby augmenting the osseointegration capacity of titanium implants and attracting increasing attention in bone tissue engineering. Among these bioactive substances, growth factors have shown remarkable osteogenic and angiogenic induction capabilities. Consequently, researchers have developed various physical, chemical, and biological loading techniques to incorporate growth factors into titanium implants, ensuring controlled release kinetics. In contrast to conventional treatment modalities, the localized release of growth factors from functionalized titanium implants not only enhances osseointegration but also reduces the risk of complications. This review provides a comprehensive examination of the types and mechanisms of growth factors, along with a detailed exploration of the methodologies used to load growth factors onto the surface of titanium implants. Moreover, it highlights recent advancements in the application of growth factors to the surface of titanium implants (Scheme 1). Finally, the review discusses current limitations and future prospects for growth factor-functionalized titanium implants. In summary, this paper presents cutting-edge design strategies aimed at enhancing the bone regenerative capacity of growth factor-functionalized titanium implants-a significant advancement in the field of enhanced bone regeneration.
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Affiliation(s)
- Zhenjia Che
- Department of Orthopaedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai 200072, People's Republic of China.
| | - Qi Sun
- Department of Orthopaedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai 200072, People's Republic of China
| | - Zhenyu Zhao
- Department of Orthopaedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai 200072, People's Republic of China
| | - Yanglin Wu
- Department of Orthopaedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai 200072, People's Republic of China
| | - Hu Xing
- Department of Orthopaedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai 200072, People's Republic of China
| | - Kaihang Song
- Department of Orthopaedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai 200072, People's Republic of China
| | - Aopan Chen
- Department of Orthopaedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai 200072, People's Republic of China
| | - Bo Wang
- Department of Orthopaedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai 200072, People's Republic of China.
| | - Ming Cai
- Department of Orthopaedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai 200072, People's Republic of China.
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2
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Crespo-Cuevas V, Ferguson VL, Vernerey F. Poroviscoelasto-plasticity of agarose-based hydrogels. SOFT MATTER 2023; 19:790-806. [PMID: 36625244 DOI: 10.1039/d2sm01356h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Agarose gels are excellent candidates for tissue engineering as they are tunable, viscoelastic, and show a pronounced strain-stiffening response. These characteristics make them ideal to create in vitro environments to grow cells and develop tissues. As in many other biopolymers, viscoelasticity and poroelasticity coexist as time-dependent behaviors in agarose gels. While the viscoelastic behavior of these hydrogels has been considered using both phenomenological and continuum models, there remains a lack of connection between the underlying physics and the macroscopic material response. Through a finite element analysis and complimentary experiments, we evaluated the complex time-dependent mechanical response of agarose gels in various conditions. We then conceptualized these gels as a dynamic network where the global dissociation/association rate of intermolecular bonds is described as a combination of a fast rate native to double helices forming between aligned agarose molecules and a slow rate of the agarose molecules present in the clusters. Using the foundation of the transient network theory, we developed a physics-based constitutive model that accurately describes agarose behavior. Integrating experimental results and model prediction, we demonstrated that the fast dissociation/association rate follows a nonlinear force-dependent response, whose exponential evolution agrees with Eyring's model based on the transition state theory. Overall, our results establish a more accurate understanding of the time-dependent mechanics of agarose gels and provide a model that can inform design of a variety of biopolymers with a similar network topology.
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Affiliation(s)
- Victor Crespo-Cuevas
- Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO, 80309, USA.
| | - Virginia L Ferguson
- Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO, 80309, USA.
| | - Franck Vernerey
- Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO, 80309, USA.
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3
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Rogerio CB, Carvalho Abrantes D, de Oliveira JL, Ribeiro de Araújo D, Germano da Costa T, de Lima R, Fernandes Fraceto L. Cellulose Hydrogels Containing Geraniol and Icaridin Encapsulated in Zein Nanoparticles for Arbovirus Control. ACS APPLIED BIO MATERIALS 2022; 5:1273-1283. [PMID: 35167254 DOI: 10.1021/acsabm.1c01286] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The most important arboviruses are those that cause dengue, yellow fever, chikungunya, and Zika, for which the main vector is the Aedes aegypti mosquito. The use of repellents is an important way to combat mosquito-borne pathogens. In this work, a safe method of protection employing a repellent was developed based on a slow release system composed of zein nanoparticles containing the active agents icaridin and geraniol incorporated in a cellulose gel matrix. Analyses were performed to characterize the nanoparticles and the gel formulation. The nanoparticles containing the repellents presented a hydrodynamic diameter of 229 ± 9 nm, polydispersity index of 0.38 ± 0.10, and zeta potential of +29.4 ± 0.8 mV. The efficiencies of encapsulation in the zein nanoparticles exceeded 85% for icaridin and 98% for geraniol. Rheological characterization of the gels containing nanoparticles and repellents showed that the viscoelastic characteristic of hydroxypropylmethylcellulose gel was preserved. Release tests demonstrated that the use of nanoparticles in combination with the gel matrix led to improved performance of the formulations. Atomic force microscopy analyses enabled visualization of the gel network containing the nanoparticles. Cytotoxicity assays using 3T3 and HaCaT cell cultures showed low toxicity profiles for the active agents and the nanoparticles. The results demonstrated the potential of these repellent systems to provide prolonged protection while decreasing toxicity.
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Affiliation(s)
- Carolina B Rogerio
- Institute of Science and Technology, São Paulo State University (UNESP), Avenida Três de Março 511, Alto da Boa Vista, Sorocaba, São Paulo 18087-180, Brazil
| | - Daniele Carvalho Abrantes
- Institute of Science and Technology, São Paulo State University (UNESP), Avenida Três de Março 511, Alto da Boa Vista, Sorocaba, São Paulo 18087-180, Brazil
| | - Jhones L de Oliveira
- Faculty of Agronomy and Veterinary Sciences, São Paulo State University (UNESP), Jaboticabal, São Paulo 14884-900, Brazil
| | | | - Tais Germano da Costa
- Laboratory of Bioactivity Assessment and Toxicology of Nanomaterials, University of Sorocaba, Sorocaba, São Paulo 18023-000, Brazil
| | - Renata de Lima
- Laboratory of Bioactivity Assessment and Toxicology of Nanomaterials, University of Sorocaba, Sorocaba, São Paulo 18023-000, Brazil
| | - Leonardo Fernandes Fraceto
- Institute of Science and Technology, São Paulo State University (UNESP), Avenida Três de Março 511, Alto da Boa Vista, Sorocaba, São Paulo 18087-180, Brazil
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4
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Neutel CHG, Corradin G, Puylaert P, De Meyer GRY, Martinet W, Guns PJ. High Pulsatile Load Decreases Arterial Stiffness: An ex vivo Study. Front Physiol 2021; 12:741346. [PMID: 34744784 PMCID: PMC8569808 DOI: 10.3389/fphys.2021.741346] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 09/23/2021] [Indexed: 11/13/2022] Open
Abstract
Measuring arterial stiffness has recently gained a lot of interest because it is a strong predictor for cardiovascular events and all-cause mortality. However, assessing blood vessel stiffness is not easy and the in vivo measurements currently used provide only limited information. Ex vivo experiments allow for a more thorough investigation of (altered) arterial biomechanical properties. Such experiments can be performed either statically or dynamically, where the latter better corresponds to physiological conditions. In a dynamic setup, arterial segments oscillate between two predefined forces, mimicking the diastolic and systolic pressures from an in vivo setting. Consequently, these oscillations result in a pulsatile load (i.e., the pulse pressure). The importance of pulse pressure on the ex vivo measurement of arterial stiffness is not completely understood. Here, we demonstrate that pulsatile load modulates the overall stiffness of the aortic tissue in an ex vivo setup. More specifically, increasing pulsatile load softens the aortic tissue. Moreover, vascular smooth muscle cell (VSMC) function was affected by pulse pressure. VSMC contraction and basal tonus showed a dependence on the amplitude of the applied pulse pressure. In addition, two distinct regions of the aorta, namely the thoracic descending aorta (TDA) and the abdominal infrarenal aorta (AIA), responded differently to changes in pulse pressure. Our data indicate that pulse pressure alters ex vivo measurements of arterial stiffness and should be considered as an important variable in future experiments. More research should be conducted in order to determine which biomechanical properties are affected due to changes in pulse pressure. The elucidation of the underlying pulse pressure-sensitive properties would improve our understanding of blood vessel biomechanics and could potentially yield new therapeutic insights.
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Affiliation(s)
- Cédric H. G. Neutel
- Laboratory of Physiopharmacology, Faculty of Medicine and Health Sciences, University of Antwerp, Campus Drie Eiken, Antwerp, Belgium
| | - Giulia Corradin
- Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Padua, Italy
| | - Pauline Puylaert
- Laboratory of Physiopharmacology, Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Campus Drie Eiken, Antwerp, Belgium
| | - Guido R. Y. De Meyer
- Laboratory of Physiopharmacology, Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Campus Drie Eiken, Antwerp, Belgium
| | - Wim Martinet
- Laboratory of Physiopharmacology, Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Campus Drie Eiken, Antwerp, Belgium
| | - Pieter-Jan Guns
- Laboratory of Physiopharmacology, Faculty of Medicine and Health Sciences, University of Antwerp, Campus Drie Eiken, Antwerp, Belgium
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6
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Caccavo D, Cavallo R, Abrami M, Grassi M, Barba AA, Lamberti G. Dynamometric measurements of hydrogels' mechanical spectra. J Appl Polym Sci 2021. [DOI: 10.1002/app.50702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Diego Caccavo
- Department of Industrial Engineering University of Salerno Fisciano Salerno Italy
- Department of Pharmacy University of Salerno Fisciano Salerno Italy
- Eng4Life Srl Academic spin‐off Avellino Avellino Italy
| | - Rosario Cavallo
- Department of Industrial Engineering University of Salerno Fisciano Salerno Italy
- Department of Pharmacy University of Salerno Fisciano Salerno Italy
| | - Michela Abrami
- Department of Engineering and Architecture Trieste University Trieste Italy
| | - Mario Grassi
- Department of Engineering and Architecture Trieste University Trieste Italy
| | - Anna Angela Barba
- Department of Pharmacy University of Salerno Fisciano Salerno Italy
- Eng4Life Srl Academic spin‐off Avellino Avellino Italy
| | - Gaetano Lamberti
- Department of Industrial Engineering University of Salerno Fisciano Salerno Italy
- Eng4Life Srl Academic spin‐off Avellino Avellino Italy
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7
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Yu XD, Li JH, Li H, Huang J, Caccavo D, Lamberti G, Chu LQ. Gelation process of carboxymethyl chitosan-zinc supramolecular hydrogel studied with fluorescence imaging and mathematical modelling. Int J Pharm 2021; 605:120804. [PMID: 34144132 DOI: 10.1016/j.ijpharm.2021.120804] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 06/01/2021] [Accepted: 06/12/2021] [Indexed: 11/19/2022]
Abstract
Herein we report on a detailed study about the gelation kinetics of carboxymethyl chitosan-zinc (CMCh-Zn) supramolecular hydrogel by taking advantage of its intrinsic fluorescence property. A specific gelation device is designed and the gel front can be directly visualized under 365 nm UV light. The results show that when increasing Zn2+ concentration from 0.1 M to 1.0 M, the apparent diffusion coefficient increases gradually from 2.72 × 10-6 cm2/s to 4.50 × 10-6 cm2/s. The gelation kinetics then is described with a "zero order" mathematical model, proving that the gel thickness is related to the square root of the gelation time and the diffusion step is the controlling step of the gelation process. Later a more advanced model, developed in 1D geometry and solved numerically, is used to describe and predict experimental results, proving its reliability and the correct description of all the phenomena involved in the gelation process of CMCh-Zn hydrogel.
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Affiliation(s)
- Xu-Dong Yu
- College of Chemical Engineering and Materials Science, Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, Tianjin University of Science and Technology, No. 29, 13(th) Avenue, TEDA, Tianjin 300457, China
| | - Jia-Hui Li
- College of Chemical Engineering and Materials Science, Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, Tianjin University of Science and Technology, No. 29, 13(th) Avenue, TEDA, Tianjin 300457, China
| | - Heng Li
- College of Chemical Engineering and Materials Science, Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, Tianjin University of Science and Technology, No. 29, 13(th) Avenue, TEDA, Tianjin 300457, China
| | - Ju Huang
- College of Chemical Engineering and Materials Science, Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, Tianjin University of Science and Technology, No. 29, 13(th) Avenue, TEDA, Tianjin 300457, China
| | - Diego Caccavo
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, Fisciano (SA) 84084, Italy; Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 132, Fisciano (SA) 84084, Italy; Eng4Life Srl, Academic spin-off, Via Fiorentino, 32, 83100 Avellino, Italy.
| | - Gaetano Lamberti
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, Fisciano (SA) 84084, Italy; Eng4Life Srl, Academic spin-off, Via Fiorentino, 32, 83100 Avellino, Italy
| | - Li-Qiang Chu
- College of Chemical Engineering and Materials Science, Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, Tianjin University of Science and Technology, No. 29, 13(th) Avenue, TEDA, Tianjin 300457, China.
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8
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Wang X, June RK, Pierce DM. A 3-D constitutive model for finite element analyses of agarose with a range of gel concentrations. J Mech Behav Biomed Mater 2020; 114:104150. [PMID: 33214108 DOI: 10.1016/j.jmbbm.2020.104150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 10/02/2020] [Accepted: 10/17/2020] [Indexed: 11/25/2022]
Abstract
Hydrogels have seen widespread application across biomedical sciences and there is considerable interest in using hydrogels, including agarose, for creating in vitro three-dimensional environments to grow cells and study mechanobiology and mechanotransduction. Recent advances in the preparation of agarose gels enable successful encapsulation of viable cells at gel concentrations as high as 5%. Agarose with a range of gel concentrations can thus serve as an experimental model mimicking changes in the 3-D microenvironment of cells during disease progression and can facilitate experiments aimed at probing the corresponding mechanobiology, e.g. the evolving mechanobiology of chondrocytes during the progression of osteoarthritis. Importantly, whether stresses (forces) or strains (displacements) drive mechanobiology and mechanotransduction is currently unknown. We can use experiments to quantify mechanical properties of hydrogels, and imaging to estimate microstructure and even strains; however, only computational models can estimate intra-gel stresses in cell-seeded agarose constructs because the required in vitro experiments are currently impossible. Finite element modeling is well-established for (computational) mechanical analyses, but accurate constitutive models for modeling the 3-D mechanical environments of cells within high-stiffness agarose with varying gel concentrations are currently unavailable. In this study we aimed to establish a 3-D constitutive model of high-stiffness agarose with a range of gel concentrations. We applied a multi-step, physics-based optimization approach to separately fit subsets of model parameters and help achieve robust convergence. Our constitutive model, fitted to experimental data on progressive stress-relaxations, was able to predict reaction forces determined from independent experiments on cyclical loading. Our model has broad applications in finite element modeling aimed at interpreting mechanical experiments on agarose specimens seeded with cells, particularly in predicting distributions of intra-gel stresses. Our model and fitted parameters enable more accurate finite element simulations of high-stiffness agarose constructs, and thus better understanding of experiments aimed at mechanobiology, mechanotransduction, or other applications in tissue engineering.
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Affiliation(s)
- Xiaogang Wang
- Department of Mechanical Engineering, University of Connecticut, Storrs, CT, USA
| | - Ronald K June
- Department of Mechanical and Industrial Engineering, Montana State University, Bozeman, MT, USA
| | - David M Pierce
- Department of Mechanical Engineering, University of Connecticut, Storrs, CT, USA; Department of Biomedical Engineering, University of Connecticut, Storrs, CT, USA.
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9
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Hanson BS, Dougan L. Network Growth and Structural Characteristics of Globular Protein Hydrogels. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00890] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Benjamin S. Hanson
- School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, U.K
| | - Lorna Dougan
- School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, U.K
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, U.K
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10
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Caccavo D, Lamberti G, Barba AA. Mechanics and drug release from poroviscoelastic hydrogels: Experiments and modeling. Eur J Pharm Biopharm 2020; 152:299-306. [DOI: 10.1016/j.ejpb.2020.05.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 05/20/2020] [Accepted: 05/22/2020] [Indexed: 10/24/2022]
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11
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Engineering approaches for drug delivery systems production and characterization. Int J Pharm 2020; 581:119267. [DOI: 10.1016/j.ijpharm.2020.119267] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 03/22/2020] [Accepted: 03/24/2020] [Indexed: 12/17/2022]
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12
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Bayat MR, Dolatabadi R, Baghani M. Transient swelling response of pH-sensitive hydrogels: A monophasic constitutive model and numerical implementation. Int J Pharm 2020; 577:119030. [DOI: 10.1016/j.ijpharm.2020.119030] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 12/20/2019] [Accepted: 01/10/2020] [Indexed: 02/01/2023]
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13
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Caccavo D. An overview on the mathematical modeling of hydrogels' behavior for drug delivery systems. Int J Pharm 2019; 560:175-190. [PMID: 30763681 DOI: 10.1016/j.ijpharm.2019.01.076] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 01/28/2019] [Accepted: 01/31/2019] [Indexed: 02/07/2023]
Abstract
Hydrogels-based systems (HBSs) for drug delivery are nowadays extensively used and the interest in modeling their behavior is dramatically increasing. In this review a critical overview on the modeling approaches is given, quantitatively and qualitatively analyzing the publications on the subject, the trend of the publications per year and the type of modeling approaches. It was found that, despite the drug release fitting models (i.e. Higuchi's equation) are the most abundant, their use for HBSs is decreasing in the last years and luckily, considering the limiting assumption on which they were built, they will be confined to simple mathematical fitting equations. Within the mechanistic models the "multi-component" with the swelling approximation (mass transport only) and with the mechanics (fully coupled) are experiencing the highest growth rate, with much more interest toward the last one that, in the next years could be able to provide a first principles model. Statistical models, especially based on the response surface methodology, are rapidly spreading in the scientific community mainly thanks to their ability to be predictive, regardless of the phenomenology, in the analyzed design space with very low efforts. Neural Networks models for HBSs, in countertrend with their use in the pharmaceutical industry, have never take off preferring less data demanding statistical models.
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Affiliation(s)
- Diego Caccavo
- Department of Industrial Engineering, University of Salerno, 84084 Fisciano, SA, Italy.
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14
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Phadnis A, Manning KC, Sanders I, Burgin TP, Rykaczewski K. Droplet-train induced spatiotemporal swelling regimes in elastomers. SOFT MATTER 2018; 14:5869-5877. [PMID: 29951675 DOI: 10.1039/c8sm00977e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this work, we perform a combined experimental and numerical analysis of elastomer swelling dynamics upon impingement of a train of solvent droplets. We use time scale analysis to identify spatiotemporal regimes resulting in distinct boundary conditions that occur based on relative values of the absorption timescale and the droplet train period. We recognize that when either timescale is significantly larger than the other, two cases of quasi-uniform swelling occur. In contrast, when the two timescales are comparable, a variety of temporary geometrical features due to localized swelling are observed. We show that the swelling feature and its temporal evolution depends upon geometric scaling of polymer thickness and width relative to the droplet size. Based on this scaling, we identify six cases of localized swelling and experimentally demonstrate the swelling features for two cases representing limits of thickness and width. A finite element model of local swelling is developed and validated with experimental results for these two cases. The model is subsequently used to explore the swelling behavior in the rest of the identified cases. We show that depending upon the lateral dimension of the sample, swelling can locally exhibit mushroom, mesa, and cap like shapes. These deformations are magnified during the droplet-train impact but dissipate during post-train polymer equilibration. Our results also show that while swelling shape is a function of lateral dimensions of the sample, the extent of swelling increases with the elastomer sample thickness.
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Affiliation(s)
- Akshay Phadnis
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ 85287, USA.
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15
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Caccavo D, Vietri A, Lamberti G, Barba AA, Larsson A. Modeling the mechanics and the transport phenomena in hydrogels. COMPUTER AIDED CHEMICAL ENGINEERING 2018. [DOI: 10.1016/b978-0-444-63964-6.00012-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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16
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Caccavo D, Cascone S, Lamberti G, Barba AA. Hydrogels: experimental characterization and mathematical modelling of their mechanical and diffusive behaviour. Chem Soc Rev 2018; 47:2357-2373. [DOI: 10.1039/c7cs00638a] [Citation(s) in RCA: 128] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Hydrogels are materials widely used in biomedical, pharmaceutical, and nutraceutical applications. Knowledge of their mechanical and diffusive behaviour is desired to design new hydrogels-based-systems.
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Affiliation(s)
- D. Caccavo
- Dept. Industrial Engineering
- University of Salerno
- Fisciano
- Italy
| | - S. Cascone
- Dept. Industrial Engineering
- University of Salerno
- Fisciano
- Italy
| | - G. Lamberti
- Dept. Industrial Engineering
- University of Salerno
- Fisciano
- Italy
| | - A. A. Barba
- Dept. Pharmacy
- University of Salerno
- Fisciano
- Italy
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17
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New comprehensive mathematical model for HPMC-MCC based matrices to design oral controlled release systems. Eur J Pharm Biopharm 2017; 121:61-72. [DOI: 10.1016/j.ejpb.2017.09.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 08/14/2017] [Accepted: 09/11/2017] [Indexed: 02/01/2023]
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18
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Hu W, Corbera-Sabaté C, Chen XD, Mercadé-Prieto R. Poroviscoelasticity of whey protein hydrogels at different length and time scales. Food Hydrocoll 2017. [DOI: 10.1016/j.foodhyd.2017.06.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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19
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Pareek A, Maheshwari S, Cherlo S, Thavva RSR, Runkana V. Modeling drug release through stimuli responsive polymer hydrogels. Int J Pharm 2017; 532:502-510. [DOI: 10.1016/j.ijpharm.2017.09.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 08/31/2017] [Accepted: 09/01/2017] [Indexed: 01/15/2023]
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20
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Caccavo D, Cascone S, Poto S, Lamberti G, Barba AA. Mechanics and transport phenomena in agarose-based hydrogels studied by compression-relaxation tests. Carbohydr Polym 2017; 167:136-144. [DOI: 10.1016/j.carbpol.2017.03.027] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 02/26/2017] [Accepted: 03/08/2017] [Indexed: 12/22/2022]
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