1
|
Bajd F, Mikac U, Mohorič A, Serša I. The Effect of Polymer-Solvent Interaction on the Swelling of Polymer Matrix Tablets: A Magnetic Resonance Microscopy Study Complemented by Bond Fluctuation Model Simulations. Polymers (Basel) 2024; 16:601. [PMID: 38475285 DOI: 10.3390/polym16050601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 02/16/2024] [Accepted: 02/19/2024] [Indexed: 03/14/2024] Open
Abstract
Polymer matrix tablets are an important drug-delivery system widely used for oral drug administration. Understanding the tablet hydration process, both experimentally and theoretically, is, thus, very important for the development of drug delivery systems that exhibit high drug loading capacity and controlled release potential. In this study, we used magnetic resonance microscopy (MRM) to nondestructively and dynamically analyze the water hydration process of xanthan-based tablets. The swelling process was characterized by well-resolved fronts of erosion, swelling, and penetration. The experimental results were complemented by numerical simulations of the polymer matrix hydration process. In the simulations, the polymer tablet matrix was modeled as an assembly of interacting chains with embedded drug particles, while its hydration process was mediated by interaction with solvent particles. The swelling dynamics were modeled within a Monte Carlo-based bond fluctuation model (BFM) that elegantly accounted for steric and nearest-neighbor interactions. This study provides an efficient experimental-theoretical approach for the study of polymer matrix swelling processes.
Collapse
Affiliation(s)
- Franci Bajd
- Jožef Stefan Institute, 1000 Ljubljana, Slovenia
| | - Urša Mikac
- Jožef Stefan Institute, 1000 Ljubljana, Slovenia
| | - Aleš Mohorič
- Jožef Stefan Institute, 1000 Ljubljana, Slovenia
- Department of Physics, Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - Igor Serša
- Jožef Stefan Institute, 1000 Ljubljana, Slovenia
- Institute of Anatomy, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia
| |
Collapse
|
2
|
Tambe S, Jain D, Rawat R, Mali S, Pagano MA, Brunati AM, Amin P. MeltSerts technology (brinzolamide ocular inserts via hot-melt extrusion): QbD-steered development, molecular dynamics, in vitro, ex vivo and in vivo studies. Int J Pharm 2023; 648:123579. [PMID: 37931727 DOI: 10.1016/j.ijpharm.2023.123579] [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: 07/26/2023] [Revised: 10/31/2023] [Accepted: 11/03/2023] [Indexed: 11/08/2023]
Abstract
The research work aimed to develop a robust sustained release biocompatible brinzolamide (BRZ)-loaded ocular inserts (MeltSerts) using hot-melt extrusion technology with enhanced solubility for glaucoma management. A 32 rotatable central composite design was employed for the optimization of the MeltSerts to achieve sustained release. The effect of two independent factors was examined: Metolose® SR 90SH-100000SR (HPMC, hydroxypropyl methyl cellulose) and Kolliphor® P 407 (Poloxamer 407, P407). The drug release (DR) of BRZ at 0.5 h and 8 h were adopted as dependent responses. The factorial analysis resulted in an optimum composition of 50.00 % w/w of HPMC and 15.00 % w/w of P407 which gave % DR of 9.11 at 0.5 h and 69.10 at 8 h. Furthermore, molecular dynamic simulations were performed to elucidate various interactions between BRZ, and other formulation components and it was observed that BRZ showed maximum interactions with HPC and HPMC with an occupancy of 92.82 and 52.87 %, respectively. Additionally, molecular docking studies were performed to understand the interactions between BRZ and mucoadhesive polymers with ocular mucin (MUC-1). The results indicated a docking score of only -5.368 for BRZ alone, whereas a significantly higher docking score was observed for the optimized Meltserts -6.977, suggesting enhanced retention time of the optimized MeltSerts. SEM images displayed irregular surfaces, while EDS analysis validated uniform BRZ distribution in the optimized formulation. The results of the ocular irritancy studies both ex vivo and in vivo demonstrated that MeltSerts are safe for ocular use. The results indicate that the developed MeltSerts Technology has the potential to manufacture ocular inserts with cost-effectiveness, one-step processability, and enhanced product quality. Nonetheless, it also offers a once-daily regimen, consequently decreasing the dosing frequency, preservative exposure, and ultimately better glaucoma management.
Collapse
Affiliation(s)
- Srushti Tambe
- Institute of Chemical Technology, Department of Pharmaceutical Sciences and Technology, Mumbai 400019, India
| | - Divya Jain
- Institute of Chemical Technology, Department of Pharmaceutical Sciences and Technology, Mumbai 400019, India
| | - Ravi Rawat
- School of Health Sciences and Technology, UPES, Dehradun 248007, India
| | - Suraj Mali
- Birla Institute of Technology, Department of Pharmaceutical Sciences & Technology, Mesra, Ranchi 835 215, India
| | | | - Anna Maria Brunati
- Department of Molecular Medicine, University of Padua, Padua 35121, Italy
| | - Purnima Amin
- Institute of Chemical Technology, Department of Pharmaceutical Sciences and Technology, Mumbai 400019, India.
| |
Collapse
|
3
|
Sguizzato M, Ferrara F, Baraldo N, Bondi A, Guarino A, Drechsler M, Valacchi G, Cortesi R. Bilosomes and Biloparticles for the Delivery of Lipophilic Drugs: A Preliminary Study. Antioxidants (Basel) 2023; 12:2025. [PMID: 38136145 PMCID: PMC10741235 DOI: 10.3390/antiox12122025] [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: 10/20/2023] [Revised: 11/14/2023] [Accepted: 11/17/2023] [Indexed: 12/24/2023] Open
Abstract
In this study, bile acid-based vesicles and nanoparticles (i.e., bilosomes and biloparticles) are studied to improve the water solubility of lipophilic drugs. Ursodeoxycholic acid, sodium cholate, sodium taurocholate and budesonide were used as bile acids and model drugs, respectively. Bilosomes and biloparticles were prepared following standard protocols with minor changes, after a preformulation study. The obtained systems showed good encapsulation efficiency and dimensional stability. Particularly, for biloparticles, the increase in encapsulation efficiency followed the order ursodeoxycholic acid < sodium cholate < sodium taurocholate. The in vitro release of budesonide from both bilosytems was performed by means of dialysis using either a nylon membrane or a portion of Wistar rat small intestine and two receiving solutions (i.e., simulated gastric and intestinal fluids). Both in gastric and intestinal fluid, budesonide was released from bilosystems more slowly than the reference solution, while biloparticles showed a significant improvement in the passage of budesonide into aqueous solution. Immunofluorescence experiments indicated that ursodeoxycholic acid bilosomes containing budesonide are effective in reducing the inflammatory response induced by glucose oxidase stimuli and counteract ox-inflammatory damage within intestinal cells.
Collapse
Affiliation(s)
- Maddalena Sguizzato
- Department of Chemical, Pharmaceutical and Agricultural Sciences (DoCPAS), University of Ferrara, I-44121 Ferrara, Italy; (M.S.); (F.F.); (N.B.); (A.B.)
| | - Francesca Ferrara
- Department of Chemical, Pharmaceutical and Agricultural Sciences (DoCPAS), University of Ferrara, I-44121 Ferrara, Italy; (M.S.); (F.F.); (N.B.); (A.B.)
| | - Nada Baraldo
- Department of Chemical, Pharmaceutical and Agricultural Sciences (DoCPAS), University of Ferrara, I-44121 Ferrara, Italy; (M.S.); (F.F.); (N.B.); (A.B.)
| | - Agnese Bondi
- Department of Chemical, Pharmaceutical and Agricultural Sciences (DoCPAS), University of Ferrara, I-44121 Ferrara, Italy; (M.S.); (F.F.); (N.B.); (A.B.)
| | - Annunziata Guarino
- Department of Neurosciences and Rehabilitation, University of Ferrara, I-44121 Ferrara, Italy;
| | - Markus Drechsler
- Bavarian Polymer Institute (BPI), Keylab “Electron and Optical Microscopy”, University of Bayreuth, D-95440 Bayreuth, Germany;
| | - Giuseppe Valacchi
- Department of Environmental Sciences and Prevention, University of Ferrara, I-44121 Ferrara, Italy;
- Animal Science Department NC Research Campus, Plants for Human Health Institute, NC State University, Kannapolis, NC 28081, USA
- Department of Food and Nutrition, Kyung Hee University, Seoul S02447, Republic of Korea
| | - Rita Cortesi
- Department of Chemical, Pharmaceutical and Agricultural Sciences (DoCPAS), University of Ferrara, I-44121 Ferrara, Italy; (M.S.); (F.F.); (N.B.); (A.B.)
- Biotechnology Interuniversity Consortium (C.I.B.), Ferrara Section, University of Ferrara, I-44121 Ferrara, Italy
| |
Collapse
|
4
|
Zhao Y, Li B, Zhang W, Zhang L, Zhao H, Wang S, Huang C. Recent Advances in Sustainable Antimicrobial Food Packaging: Insights into Release Mechanisms, Design Strategies, and Applications in the Food Industry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:11806-11833. [PMID: 37467345 DOI: 10.1021/acs.jafc.3c02608] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
In response to the issues of foodborne microbial contamination and carbon neutrality goals, sustainable antimicrobial food packaging (SAFP) composed of renewable or biodegradable biopolymer matrices with ecofriendly antimicrobial agents has emerged. SAFP offers longer effectiveness, wider coverage, more controllability, and better environmental performance. Analyzing SAFP information, including the release profile of each antimicrobial agent for each food, the interaction of each biomass matrix with each food, the material size, form, and preparation methods, and its service quality in real foods, is crucial. While encouraging reports exist, a comprehensive review summarizing these developments is lacking. Therefore, this review critically examines recent release-antimicrobial mechanisms, kinetics models, preparation methods, and key regulatory parameters for SAFPs based on slow- or controlled-release theory. Furthermore, it discusses fundamental physicochemical characteristics, effective concentrations, advantages, release approaches, and antimicrobial and preservative effects of various materials in food simulants or actual food. Lastly, inadequacies and future trends are explored, providing practical references to regulate the movement of active substances in different media, reduce the reliance on petrochemical-based materials, and advance food packaging and preservation technologies.
Collapse
Affiliation(s)
- Yuan Zhao
- School of Light Industry & Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, China
- Sichuan Key Laboratory of Conservation Biology for Endangered Wildlife, Chengdu Research Base of Giant Panda Breeding, Chengdu 610081, China
| | - Bo Li
- School of Light Industry & Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, China
| | - Wenping Zhang
- Sichuan Key Laboratory of Conservation Biology for Endangered Wildlife, Chengdu Research Base of Giant Panda Breeding, Chengdu 610081, China
| | - Lanyu Zhang
- School of Light Industry & Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, China
| | - Hui Zhao
- School of Light Industry & Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, China
| | - Shuangfei Wang
- School of Light Industry & Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, China
| | - Chongxing Huang
- School of Light Industry & Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, China
| |
Collapse
|
5
|
Kalosakas G. Interplay between Diffusion and Bond Cleavage Reaction for Determining Release in Polymer-Drug Conjugates. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4595. [PMID: 37444909 DOI: 10.3390/ma16134595] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/08/2023] [Accepted: 06/10/2023] [Indexed: 07/15/2023]
Abstract
In conjugated polymeric drug delivery systems, both the covalent bond degradation rate and the diffusion of the freely moving drug particles affect the release profile of the formulation. Using Monte Carlo simulations in spherical matrices, the release kinetics resulting from the competition between the reaction and diffusion processes is discussed. For different values of the relative bond cleavage rate, varied over four orders of magnitude, the evolution of (i) the number of bonded drug molecules, (ii) the fraction of the freely moved detached drug within the polymer matrix, and (iii) the resulting fractional release of the drug is presented. The characteristic release time scale is found to increase by several orders of magnitude as the cleavage reaction rate constant decreases. The two extreme rate-limiting cases where either the diffusion or the reaction dominates the release are clearly distinguishable. The crossover between the diffusion-controlled and reaction-controlled regimes is also examined and a simple analytical formula is presented that can describe the full dependence of the release time on the bond cleavage rate constant. This simple relation is provided simply by the sum of the characteristic time for purely diffusional release and the bond cleavage decay time, which equals the inverse of the reaction rate constant.
Collapse
Affiliation(s)
- George Kalosakas
- Materials Science Department, University of Patras, GR-26504 Rio, Greece
| |
Collapse
|
6
|
Zhu W, Long J, Shi M. Release Kinetics Model Fitting of Drugs with Different Structures from Viscose Fabric. MATERIALS (BASEL, SWITZERLAND) 2023; 16:3282. [PMID: 37110118 PMCID: PMC10146738 DOI: 10.3390/ma16083282] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 04/16/2023] [Accepted: 04/18/2023] [Indexed: 06/19/2023]
Abstract
(1) Background: It is simpler and more environmentally friendly to use supercritical CO2 fluid technology to process skincare viscose fabrics. Therefore, it is significant to study the release properties of drug-loaded viscose fabrics to choose suitable skincare drugs. In this work, the release kinetics model fittings were investigated in order to clarify the release mechanism and provide a theoretical basis for processing skincare viscose fabrics with supercritical CO2 fluid. (2) Methods: Nine kinds of drugs with different substituent groups, different molecular weights, and different substitution positions were loaded onto viscose fabrics using supercritical CO2 fluid. Then, the drug-loaded viscose fabrics were placed in an ethanol medium, and the release curves were drawn. Finally, the release kinetics were fitted using zero-order release kinetics, the first-order kinetics model, the Higuchi model, and the Korsmeyer-Peppas model. (3) Results: The Korsmeyer-Peppas model was the best-fitting model for all the drugs. Drugs with different substituent groups were released via a non-Fickian diffusion mechanism. On the contrary, other drugs were released via a Fickian diffusion mechanism. (4) Conclusions: In view of the release kinetics, it was found that the viscose fabric can swell when a drug with a higher solubility parameter is loaded onto it using supercritical CO2 fluid, and the release rate is also slower.
Collapse
|
7
|
Cehajic-Kapetanovic J, Singh MS, Zrenner E, MacLaren RE. Bioengineering strategies for restoring vision. Nat Biomed Eng 2023; 7:387-404. [PMID: 35102278 DOI: 10.1038/s41551-021-00836-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 11/30/2021] [Indexed: 12/15/2022]
Abstract
Late-stage retinal degenerative disease involving photoreceptor loss can be treated by optogenetic therapy, cell transplantation and retinal prostheses. These approaches aim to restore light sensitivity to the retina as well as visual perception by integrating neuronal responses for transmission to the cortex. In age-related macular degeneration, some cell-based therapies also aim to restore photoreceptor-supporting tissue to prevent complete photoreceptor loss. In the earlier stages of degeneration, gene-replacement therapy could attenuate retinal-disease progression and reverse loss of function. And gene-editing strategies aim to correct the underlying genetic defects. In this Review, we highlight the most promising gene therapies, cell therapies and retinal prostheses for the treatment of retinal disease, discuss the benefits and drawbacks of each treatment strategy and the factors influencing whether functional tissue is reconstructed and repaired or replaced with an electronic device, and summarize upcoming technologies for enhancing the restoration of vision.
Collapse
Affiliation(s)
- Jasmina Cehajic-Kapetanovic
- Nuffield Laboratory of Ophthalmology, University of Oxford, Oxford, UK.
- Oxford Eye Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK.
| | | | - Eberhart Zrenner
- Institute for Ophthalmic Research, Center for Ophthalmology, University of Tübingen, Tübingen, Germany
| | - Robert E MacLaren
- Nuffield Laboratory of Ophthalmology, University of Oxford, Oxford, UK
- Oxford Eye Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| |
Collapse
|
8
|
Vasileiadou AC, Karageorgos FF, Kiparissides C. Model-based Optimization of Drug Release Rate from a Size Distributed Population of Biodegradable Polymer Carriers. Eur J Pharm Biopharm 2023; 186:112-131. [PMID: 36870398 DOI: 10.1016/j.ejpb.2023.02.014] [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: 11/25/2022] [Revised: 02/21/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023]
Abstract
In the present study, a comprehensive polymer degradation-drug diffusion model is developed to describe the polymer degradation kinetics and quantify the release rate of an active pharmaceutical ingredient (API) from a size-distributed population of drug-loaded poly(lactic-co-glycolic) acid (PLGA) carriers in terms of material and morphological properties of the drug carriers. To take into account the spatial-temporal variation of the drug and water diffusion coefficients, three new correlations are developed in terms of spatial-temporal variation of the molecular weight of the degrading polymer chains. The first one relates the diffusion coefficients with the time-spatial variation of the molecular weight of PLGA and initial drug loading and, the second one with the initial particle size, and the third one with evolution of the particle porosity due to polymer degradation. The derived model, comprising a system of partial differential and algebraic equations, is numerically solved using the method of lines and validated against published experimental data on the drug release rate from a size distributed population of piroxicam-PLGA microspheres. Finally, a multi-parametric optimization problem is formulated to calculate the optimal particle size and drug loading distributions of drug-loaded PLGA carriers to realize a desired zero-order drug release rate of a therapeutic drug over a specified administration period of several weeks. It is envisaged that the proposed model-based optimization approach will aid the optimal design of new controlled drug delivery systems and, consequently, the therapeutic outcome of an administered drug.
Collapse
Affiliation(s)
- Athina C Vasileiadou
- Department of Chemical Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Filippos F Karageorgos
- Department of Chemical Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Costas Kiparissides
- Department of Chemical Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; Chemical Process & Energy Resources Institute, Centre for Research and Technology Hellas, P.O. Box 60361, 57001 Thessaloniki, Greece.
| |
Collapse
|
9
|
Jenner AL, Kelly W, Dallaston M, Araujo R, Parfitt I, Steinitz D, Pooladvand P, Kim PS, Wade SJ, Vine KL. Examining the efficacy of localised gemcitabine therapy for the treatment of pancreatic cancer using a hybrid agent-based model. PLoS Comput Biol 2023; 19:e1010104. [PMID: 36649330 PMCID: PMC9891514 DOI: 10.1371/journal.pcbi.1010104] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 02/01/2023] [Accepted: 12/21/2022] [Indexed: 01/18/2023] Open
Abstract
The prognosis for pancreatic ductal adenocarcinoma (PDAC) patients has not significantly improved in the past 3 decades, highlighting the need for more effective treatment approaches. Poor patient outcomes and lack of response to therapy can be attributed, in part, to a lack of uptake of perfusion of systemically administered chemotherapeutic drugs into the tumour. Wet-spun alginate fibres loaded with the chemotherapeutic agent gemcitabine have been developed as a potential tool for overcoming the barriers in delivery of systemically administrated drugs to the PDAC tumour microenvironment by delivering high concentrations of drug to the tumour directly over an extended period. While exciting, the practicality, safety, and effectiveness of these devices in a clinical setting requires further investigation. Furthermore, an in-depth assessment of the drug-release rate from these devices needs to be undertaken to determine whether an optimal release profile exists. Using a hybrid computational model (agent-based model and partial differential equation system), we developed a simulation of pancreatic tumour growth and response to treatment with gemcitabine loaded alginate fibres. The model was calibrated using in vitro and in vivo data and simulated using a finite volume method discretisation. We then used the model to compare different intratumoural implantation protocols and gemcitabine-release rates. In our model, the primary driver of pancreatic tumour growth was the rate of tumour cell division. We were able to demonstrate that intratumoural placement of gemcitabine loaded fibres was more effective than peritumoural placement. Additionally, we quantified the efficacy of different release profiles from the implanted fibres that have not yet been tested experimentally. Altogether, the model developed here is a tool that can be used to investigate other drug delivery devices to improve the arsenal of treatments available for PDAC and other difficult-to-treat cancers in the future.
Collapse
Affiliation(s)
- Adrianne L. Jenner
- School of Mathematical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
- * E-mail:
| | - Wayne Kelly
- School of Computer Science, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Michael Dallaston
- School of Mathematical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Robyn Araujo
- School of Mathematical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Isobelle Parfitt
- School of Mathematical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Dominic Steinitz
- Tweag Software Innovation Lab, London, United Kingdom
- Kingston University, Kingston, United Kingdom
| | - Pantea Pooladvand
- School of Mathematics and Statistics, University of Sydney, Sydney, New South Wales, Australia
| | - Peter S. Kim
- School of Mathematics and Statistics, University of Sydney, Sydney, New South Wales, Australia
| | - Samantha J. Wade
- Illawarra Health and Medical Research Institute, Wollongong, New South Wales, Australia
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales, Australia
| | - Kara L. Vine
- Illawarra Health and Medical Research Institute, Wollongong, New South Wales, Australia
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales, Australia
| |
Collapse
|
10
|
Hu H, Liao Z, Xu M, Wan S, Wu Y, Zou W, Wu J, Fan Q. Fabrication, Optimization, and Evaluation of Paclitaxel and Curcumin Coloaded PLGA Nanoparticles for Improved Antitumor Activity. ACS OMEGA 2023; 8:976-986. [PMID: 36643566 PMCID: PMC9835547 DOI: 10.1021/acsomega.2c06359] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
Codelivery of chemotherapeutic drugs in nanoparticles can enhance the therapeutic effects against tumors. However, their anticancer properties and physiochemical characteristics can be severely influenced by many formulation parameters during the preparation process. It is a complicated development phase to select the optimal parameters for preparation of nanoparticles based on the commonly used one single parameter method, which consumes a lot of money, time, and effort, and sometimes even fails. Therefore, the statistical analysis based on Box-Behnken design (BBD) has attracted much attention in bioengineering fields because it can illustrate the influence of parameters, build mathematical models, and predict the optimal combinational factors in a decreased number of experiments. In this study, we used a three-factor three-level BBD design to optimize the preparation of poly(lactic-co-glycolic acid) (PLGA) nanoparticles coloaded with two anticancer drugs curcumin and paclitaxel (PLGA-CUR-PTX nanoparticles). The surfactant concentration, polymer concentration, and oil-water ratio were selected as independent variables. An optimized model of the formulation for PLGA-CUR-PTX nanoparticles was validated. The optimal nanoparticles possessed a uniform spherical shape, with an average size of 99.94 nm, and the drug encapsulation efficiencies of CUR and PTX were 63.53 and 80.64%, respectively. The drug release from nanoparticles showed a biphasic release behavior, with a release mechanism via diffusion and fundamentally quasi-Fickian diffusion. The optimized nanoparticles demonstrated an enhanced cytotoxicity effect with lower IC50 values to 4T1 and MCF-7 breast cancer cell lines compared to free drugs. In summary, BBD optimization of CUR and PTX coloaded nanoparticles yielded a favorable drug carrier that holds potential as an alternative treatment for anticancer therapy.
Collapse
Affiliation(s)
- Haiyang Hu
- Department
of Chinese Materia Medica, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan610075, China
- Sichuan
Key Medical Laboratory of New Drug Discovery and Druggability Evaluation,
Luzhou Key Laboratory of Activity Screening and Druggability Evaluation
for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou646000, China
| | - Zuyue Liao
- Department
of Pharmacy, The Affiliated Hospital of
Southwest Medical University, Luzhou, Sichuan646099, China
| | - Mengyao Xu
- Department
of Pharmacy, The Affiliated Hospital of
Southwest Medical University, Luzhou, Sichuan646099, China
| | - Shengli Wan
- Department
of Pharmacy, The Affiliated Hospital of
Southwest Medical University, Luzhou, Sichuan646099, China
- Sichuan
Key Medical Laboratory of New Drug Discovery and Druggability Evaluation,
Luzhou Key Laboratory of Activity Screening and Druggability Evaluation
for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou646000, China
| | - Yuesong Wu
- Department
of Pharmacy, The Affiliated Hospital of
Southwest Medical University, Luzhou, Sichuan646099, China
- Sichuan
Key Medical Laboratory of New Drug Discovery and Druggability Evaluation,
Luzhou Key Laboratory of Activity Screening and Druggability Evaluation
for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou646000, China
| | - Wenjun Zou
- Department
of Chinese Materia Medica, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan610075, China
| | - Jianming Wu
- Sichuan
Key Medical Laboratory of New Drug Discovery and Druggability Evaluation,
Luzhou Key Laboratory of Activity Screening and Druggability Evaluation
for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou646000, China
- School
of Basic Medical Sciences, Southwest Medical
University, Luzhou646000, China
| | - Qingze Fan
- Department
of Pharmacy, The Affiliated Hospital of
Southwest Medical University, Luzhou, Sichuan646099, China
- Sichuan
Key Medical Laboratory of New Drug Discovery and Druggability Evaluation,
Luzhou Key Laboratory of Activity Screening and Druggability Evaluation
for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou646000, China
| |
Collapse
|
11
|
Lag Time in Diffusion-Controlled Release Formulations Containing a Drug-Free Outer Layer. Processes (Basel) 2022. [DOI: 10.3390/pr10122592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022] Open
Abstract
Theoretical considerations along with extensive Monte Carlo simulations are used to calculate the lag time before the initiation of diffusion-controlled drug release in multilayer planar devices with an outer layer containing no drug. The presented results are also relevant in formulations coated by a drug-free membrane as well as in other reservoir systems. The diffusion of drug molecules through the outer layer towards the release medium is considered, giving rise to the observed lag time. We have determined the dependence of lag time on the thickness and the diffusion coefficient of the drug-free outer layer, as well as on the initial drug concentration and the surface area of the planar device. A simple expression, obtained through an analytical solution of diffusion equation, provides an approximate estimate for the lag time that describes the numerical results reasonably well; according to this relation, the lag time is proportional to the squared thickness of the outer layer over the corresponding diffusion coefficient and inversely proportional to the logarithm of the linear number density of the drug that is initially loaded in the inner layer.
Collapse
|
12
|
Palmiyanto MH, Surojo E, Ariawan D, Imaduddin F. E-glass/kenaf fibre reinforced thermoset composites fiiled with MCC and immersion in a different fluid. Sci Rep 2022; 12:20332. [PMID: 36434046 PMCID: PMC9700771 DOI: 10.1038/s41598-022-24506-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 11/16/2022] [Indexed: 11/27/2022] Open
Abstract
It is important to examine the long-term durability of glass-kenaf fibre reinforced phenolic resin composites when they are exposed to humid environments or submerged in water. Furthermore, the durability of such composites when immersed in different pH solutions have yet to be examined. As such, this present study examined the use of 4%, 8%, and 12% volume fractions (vfs) of microcrystalline cellulose (MCC) as a filler and reinforcement to improve the properties of glass fibre-kenaf reinforced phenolic resin composites. The flexural strength of these composites was examined both pre- and post-immersion in distilled water (pH 7), seawater (pH 8), and an acidic solution (pH 3) for 60 days. The diffusion mechanism, difussion coefficient, and water absorption concentration were also examined. The difussion coefficient and water absorption concentration occurred post-immersion in distilled water (pH7) and seawater (pH8) while the acidic solution (pH3) resulted in the highest loss of mass and size. Scanning electron microscopy (SEM) of the surfaces of the saturated composites indicated that fibre-matrix interfacial bonding was weak. However, composites that contained a higher vf of MCC exhibited stronger interfacial bonding between the matrix and constituents, thereby, reducing water absorption and diffusion. The flexural strength of the composite pre- and post-immersion was MCC12 > MCC8 > MCC4 > MCC0, in descending order of strength.
Collapse
Affiliation(s)
- Martinus Heru Palmiyanto
- grid.444517.70000 0004 1763 5731Mechanical Engineering Department, Faculty of Engineering, Universitas Sebelas Maret, Surakarta, 57126 Central Java Indonesia ,Mechanical Engineering Department, Sekolah Tinggi Teknologi Warga Surakarta, Sukoharjo, 57552 Central Java Indonesia
| | - Eko Surojo
- grid.444517.70000 0004 1763 5731Mechanical Engineering Department, Faculty of Engineering, Universitas Sebelas Maret, Surakarta, 57126 Central Java Indonesia
| | - Dody Ariawan
- grid.444517.70000 0004 1763 5731Mechanical Engineering Department, Faculty of Engineering, Universitas Sebelas Maret, Surakarta, 57126 Central Java Indonesia
| | - Fitrian Imaduddin
- grid.444517.70000 0004 1763 5731Mechanical Engineering Department, Faculty of Engineering, Universitas Sebelas Maret, Surakarta, 57126 Central Java Indonesia
| |
Collapse
|
13
|
Marriott R, Spiridonova TI, Tverdokhlebov SI, Anissimov YG. Using Compartments to Model Drug Delivery from Biodegradable Polymers. J Pharm Sci 2022; 111:3096-3107. [PMID: 35872022 DOI: 10.1016/j.xphs.2022.07.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 07/10/2022] [Accepted: 07/11/2022] [Indexed: 12/14/2022]
Abstract
Polymeric drug delivery systems can improve patient compliance, decrease toxicity and prolong therapeutic effects for a wide range of therapeutic treatments, by controlling drug release. Polymer delivery system development can be facilitated by mathematical models. We present here a new compartmental model that will be more familiar to pharmaceutical professionals and equally as effective as common diffusion equation-based models. The compartmental model considers both polymer degradation and drug diffusion to predict drug release. The model is adapted into three different geometries for different polymer delivery scenarios: membranes, fibres and particles. Model parameters are derived in terms of diffusion coefficients. Polymer-drug binding interactions and distributions of fibre/particle diameters are incorporated to the model. The model is validated by comparison to common diffusion equation-based solutions and fitting to experimental data. It is shown how the model for drug release can be incorporated into existing distribution models to predict plasma concentrations of an in vivo administration. A user-friendly Python implementation of the model is available on Github, at https://github.com/spirt-t/compartments_model.
Collapse
Affiliation(s)
- R Marriott
- School of Environment and Science, Griffith University, Gold Coast, Queensland, 4222, Australia
| | - T I Spiridonova
- The Weinberg Research Center, National Research Tomsk Polytechnic University, 30 Lenin Avenue, 634050, Russia
| | - S I Tverdokhlebov
- The Weinberg Research Center, National Research Tomsk Polytechnic University, 30 Lenin Avenue, 634050, Russia
| | - Y G Anissimov
- School of Environment and Science, Griffith University, Gold Coast, Queensland, 4222, Australia.
| |
Collapse
|
14
|
Chitosan sulfate-lysozyme hybrid hydrogels as platforms with fine-tuned degradability and sustained inherent antibiotic and antioxidant activities. Carbohydr Polym 2022; 291:119611. [DOI: 10.1016/j.carbpol.2022.119611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 05/06/2022] [Accepted: 05/09/2022] [Indexed: 12/14/2022]
|
15
|
Morrish C, Whitehead F, Istivan T, Kasapis S. The effect of trisodium phosphate crosslinking on the diffusion kinetics of caffeine from chitosan networks. Food Chem 2022; 381:132272. [PMID: 35123227 DOI: 10.1016/j.foodchem.2022.132272] [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: 10/11/2021] [Revised: 01/24/2022] [Accepted: 01/25/2022] [Indexed: 11/04/2022]
Abstract
This work examines the relationship between microstructural properties of hot-moulded chitosan networks, crosslinked with trisodium phosphate, and diffusive behaviour from these networks. Analysis through infrared spectroscopy (FTIR) confirmed successful crosslinking of the polymer chains and bioactive entrapment, while X-ray diffraction (WAXD) and dynamic oscillation in-shear elucidated the higher order structural properties of each matrix, as they transitioned from solutions to amorphous gels to semi-crystalline matrices. The picture of molecular motion observed in these systems and consequent application of the Flory-Rehner theory further indicated that different extents of chitosan crosslinking yielded a distinct water infusion functionality seen in the levels of swelling. Diffusion of caffeine from these delivery vehicles showed that network structural properties (governed by crosslinker concentration) had a significant effect on the release kinetics of the entrapped bioactive. The relationship between network mesh characteristics and diffusion properties were further confirmed by correlating caffeine release rates and molecular pore size.
Collapse
Affiliation(s)
- Courtney Morrish
- School of Science, RMIT University, Bundoora West Campus, Melbourne, Vic 3083, Australia
| | - Felicity Whitehead
- School of Science, RMIT University, Bundoora West Campus, Melbourne, Vic 3083, Australia
| | - Taghrid Istivan
- School of Science, RMIT University, Bundoora West Campus, Melbourne, Vic 3083, Australia
| | - Stefan Kasapis
- School of Science, RMIT University, Bundoora West Campus, Melbourne, Vic 3083, Australia.
| |
Collapse
|
16
|
Synthesis of N-vinylcaprolactam and methacrylic acid based hydrogels and investigation of drug release characteristics. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04301-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
17
|
Abstract
Carriers are protective transporters of drugs to target cells, facilitating therapy under each points of view, such as fast healing, reducing infective phenomena, and curing illnesses while avoiding side effects. Over the last 60 years, several scientists have studied drug carrier properties, trying to adapt them to the release environment. Drug/Carrier interaction phenomena have been deeply studied, and the release kinetics have been modeled according to the occurring phenomena involved in the system. It is not easy to define models’ advantages and disadvantages, since each of them may fit in a specific situation, considering material interactions, diffusion and erosion phenomena, and, no less important, the behavior of receiving medium. This work represents a critical review on main mathematical models concerning their dependency on physical, chemical, empirical, or semi-empirical variables. A quantitative representation of release profiles has been shown for the most representative models. A final critical comment on the applicability of these models has been presented at the end. A mathematical approach to this topic may help students and researchers approach the wide panorama of models that exist in literature and have been optimized over time. This models list could be of practical inspiration for the development of researchers’ own new models or for the application of proper modifications, with the introduction of new variable dependency.
Collapse
|
18
|
Poly(curcumin β-amino ester)-Based Tablet Formulation for a Sustained Release of Curcumin. Gels 2022; 8:gels8060337. [PMID: 35735681 PMCID: PMC9222275 DOI: 10.3390/gels8060337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 05/20/2022] [Accepted: 05/23/2022] [Indexed: 11/16/2022] Open
Abstract
Oral drug delivery remains the most common and well tolerated method for drug administration. However, its applicability is often limited due to low drug solubility and stability. One approach to overcome the solubility and stability limitations is the use of amorphous polymeric prodrug formulations, such as poly(β-amino ester) (PBAE). PBAE hydrogels, which are biodegradable and pH responsive, have shown promising results for the controlled release of drugs by improving the stability and increasing the solubility of these drugs. In this work, we have evaluated the potential use of PBAE prodrugs in an oral tablet formulation, studying their sustained drug release potential and storage stability. Curcumin, a low solubility, low stability antioxidant drug was used as a model compound. Poly(curcumin β-amino ester) (PCBAE), a crosslinked amorphous network, was synthesized by a previously published method using a commercial diacrylate and a primary diamine, in combination with acrylate-functionalized curcumin. PCBAE-based tablets were made and exhibited a sustained release for 16 h, following the hydrolytic degradation of PCBAE particles into native curcumin. In addition to the release studies, preliminary storage stability was assessed using standard and accelerated stability conditions. As PCBAE degradation is hydrolysis driven, tablet stability was found to be sensitive to moisture.
Collapse
|
19
|
Gomes-Filho MS, Oliveira FA, Barbosa MAA. Modeling the diffusion-erosion crossover dynamics in drug release. Phys Rev E 2022; 105:044110. [PMID: 35590597 DOI: 10.1103/physreve.105.044110] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 03/18/2022] [Indexed: 06/15/2023]
Abstract
A computational model is proposed to investigate drug delivery systems in which erosion and diffusion mechanisms are participating in the drug release process. Our approach allowed us to analytically estimate the crossover point between those mechanisms through the value of the parameter b (b_{c}=1) and the scaling behavior of parameter τ on the Weibull function, exp[-(t/τ)^{b}], used to adjust drug release data in pharmaceutical literature. Numerical investigations on the size dependence of the characteristic release time τ found it to satisfy either linear or quadratic scaling relations on either erosive or diffusive regimes. Along the crossover, the characteristic time scales with the average coefficient observed on the extreme regimes (i.e., τ∼L^{3/2}), and we show that this result can be derived analytically by assuming an Arrhenius relation for the diffusion coefficient inside the capsule. Based on these relations, a phenomenological expression for the characteristic release in terms of size L and erosion rate κ is proposed, which can be useful for predicting the crossover erosion rate κ_{c}. We applied this relation to the experimental literature data for the release of acetaminophen immersed in a wax matrix and found them to be consistent with our numerical results.
Collapse
Affiliation(s)
- Márcio Sampaio Gomes-Filho
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, 09210-580, Santo André, São Paulo, Brazil
| | - Fernando Albuquerque Oliveira
- Instituto de Física, Universidade de Brasília, 70919-970 Brasília-DF, Brazil
- Instituto de Física, Universidade Federal da Bahia, Campus Universitário da Federação, Rua Barão de Jeremoabo s/n, 40170-115 Salvador-BA, Brazil
| | | |
Collapse
|
20
|
Malebari AM, Kara A, Khayyat AN, Mohammad KA, Serrano DR. Development of Advanced 3D-Printed Solid Dosage Pediatric Formulations for HIV Treatment. Pharmaceuticals (Basel) 2022; 15:ph15040435. [PMID: 35455431 PMCID: PMC9025733 DOI: 10.3390/ph15040435] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 03/26/2022] [Accepted: 03/28/2022] [Indexed: 02/04/2023] Open
Abstract
The combination of lopinavir/ritonavir remains one of the first-line therapies for the initial antiretroviral regimen in pediatric HIV-infected children. However, the implementation of this recommendation has faced many challenges due to cold-chain requirements, high alcohol content, and unpalatability for ritonavir-boosted lopinavir syrup. In addition, the administration of crushed tablets has shown a detriment for the oral bioavailability of both drugs. Therefore, there is a clinical need to develop safer and better formulations adapted to children’s needs. This work has demonstrated, for the first time, the feasibility of using direct powder extrusion 3D printing to manufacture personalized pediatric HIV dosage forms based on 6 mm spherical tablets. H-bonding between drugs and excipients (hydroxypropyl methylcellulose and polyethylene glycol) resulted in the formation of amorphous solid dispersions with a zero-order sustained release profile, opposite to the commercially available formulation Kaletra, which exhibited marked drug precipitation at the intestinal pH.
Collapse
Affiliation(s)
- Azizah M. Malebari
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (A.M.M.); (A.N.K.); (K.A.M.)
| | - Aytug Kara
- Department of Pharmaceutics and Food Science, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain;
| | - Ahdab N. Khayyat
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (A.M.M.); (A.N.K.); (K.A.M.)
| | - Khadijah A. Mohammad
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (A.M.M.); (A.N.K.); (K.A.M.)
| | - Dolores R. Serrano
- Department of Pharmaceutics and Food Science, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain;
- Instituto de Farmacia Industrial y Galénica, School of Pharmacy, Universidad Complutense de Madrid, 28040 Madrid, Spain
- Correspondence: ; Tel.: +34-91-394-16-20
| |
Collapse
|
21
|
Chen X, Chen Z, Ma L. Multi-stimuli-responsive bottlebrush-colloid Janus nanoparticles toward emulsion interfacial manipulation and catalysis. Polym Chem 2022. [DOI: 10.1039/d1py01606g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Multi-stimuli bottlebrush-colloid Janus nanoparticles (JNPs) display excellent activity for emulsion interface manipulation and emulsion interfacial catalysis of hydrogenation reactions.
Collapse
Affiliation(s)
- Xi Chen
- Department of Materials Science, Fudan University, Shanghai 200433, China
- Zhuhai Fudan Innovation Institute, Zhuhai 518057, China
| | - Zhangyan Chen
- School of Light Industry and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Li Ma
- Department of Materials Science, Fudan University, Shanghai 200433, China
- Zhuhai Fudan Innovation Institute, Zhuhai 518057, China
| |
Collapse
|
22
|
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] [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.
Collapse
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
| |
Collapse
|
23
|
Mary AS, Raghavan VS, Kagula S, Krishnakumar V, Kannan M, Gorthi SS, Rajaram K. Enhanced In Vitro Wound Healing Using PVA/B-PEI Nanofiber Mats: A Promising Wound Therapeutic Agent against ESKAPE and Opportunistic Pathogens. ACS APPLIED BIO MATERIALS 2021; 4:8466-8476. [PMID: 35005922 DOI: 10.1021/acsabm.1c00985] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Opportunistic skin pathogens and their resistance to pre-existing therapeutics are a challenge to normal physiological wound healing processes. Consistent development of antimicrobial agents is required to overcome the complications raised by antimicrobial resistance. An effective alternative proposed in recent research includes the use of antimicrobial nanoparticles or nanobiopolymers. Unfortunately, metallic nanoparticles that have been proven as antimicrobial agents also possess a certain level of toxicity. In this work, we demonstrate the use of a cationic polymer, branched polyethyleneimine (B-PEI), that has been electrospun to obtain a scaffold/fiber (B-PEI NF) mat resulting in a large surface area-to-volume ratio. SEM analysis revealed that the average diameter of the obtained fibers is 240 nm. The formation of nanoscaffold modulates the controlled release of the polymer from the matrix resulting in long-term effects. The antimicrobial and antibiofilm activity of the B-PEI nanofiber (B-PEI NF) was evaluated against ESKAPE pathogens (Pseudomonas aeruginosa and Staphylococcus aureus) and also against Candida albicans. Dose-dependent inhibition was observed for microbial growth and biofilm for all three test organisms, the minimum inhibitory concentration required for inhibiting P. aeruginosa, S. aureus, and C. albicans is 33.125, 26.5, and 19.875 μM, respectively, in 2 mL of bacterial/fungal broth. Crystal violet and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assays showed significant reduction in biomass and cell viability of sessile cells, respectively, within the biofilm after treatment using B-PEI NFs. A B-PEI NF matrix promotes cell migration and wound healing processes by mimicking the extracellular matrix. In vitro wound healing studies showed a fivefold increase in cell migration and wound healing by B-PEI NFs (97% wound coverage in 17 h) when compared to B-PEI (15% wound coverage in 17 h). The in vitro wound healing assays confirmed the biocompatibility and better wound healing activity of B-PEI NF mats.
Collapse
Affiliation(s)
- Aarcha Shanmugha Mary
- Department of Microbiology, Central University of Tamil Nadu, Thiruvarur, Tamil Nadu 610005, India
| | - Vikram Srinivasa Raghavan
- Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore, Karnataka 560012, India
| | - Sirisha Kagula
- Department of Microbiology, Central University of Tamil Nadu, Thiruvarur, Tamil Nadu 610005, India
| | - Vinodhini Krishnakumar
- Department of Life Sciences, Central University of Tamil Nadu, Thiruvarur, Tamil Nadu 610005, India
| | - Meganathan Kannan
- Department of Life Sciences, Central University of Tamil Nadu, Thiruvarur, Tamil Nadu 610005, India
| | - Sai Siva Gorthi
- Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore, Karnataka 560012, India
| | - Kaushik Rajaram
- Department of Microbiology, Central University of Tamil Nadu, Thiruvarur, Tamil Nadu 610005, India
| |
Collapse
|
24
|
Engineering 3D Printed Microfluidic Chips for the Fabrication of Nanomedicines. Pharmaceutics 2021; 13:pharmaceutics13122134. [PMID: 34959415 PMCID: PMC8706109 DOI: 10.3390/pharmaceutics13122134] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 11/30/2021] [Accepted: 12/07/2021] [Indexed: 12/19/2022] Open
Abstract
Currently, there is an unmet need to manufacture nanomedicines in a continuous and controlled manner. Three-dimensional (3D) printed microfluidic chips are an alternative to conventional PDMS chips as they can be easily designed and manufactured to allow for customized designs that are able to reproducibly manufacture nanomedicines at an affordable cost. The manufacturing of microfluidic chips using existing 3D printing technologies remains very challenging because of the intricate geometry of the channels. Here, we demonstrate the manufacture and characterization of nifedipine (NFD) polymeric nanoparticles based on Eudragit L-100 using 3D printed microfluidic chips with 1 mm diameter channels produced with two 3D printing techniques that are widely available, stereolithography (SLA) and fuse deposition modeling (FDM). Fabricated polymeric nanoparticles showed good encapsulation efficiencies and particle sizes in the range of 50-100 nm. SLA chips possessed better channel resolution and smoother channel surfaces, leading to smaller particle sizes similar to those obtained by conventional manufacturing methods based on solvent evaporation, while SLA manufactured nanoparticles showed a minimal burst effect in acid media compared to nanoparticles fabricated with FDM chips. Three-dimensional printed microfluidic chips are a novel and easily amenable cost-effective strategy to allow for customization of the design process for continuous manufacture of nanomedicines under controlled conditions, enabling easy scale-up and reducing nanomedicine development times, while maintaining high-quality standards.
Collapse
|
25
|
Sharma K, Porat Z, Gedanken A. Designing Natural Polymer-Based Capsules and Spheres for Biomedical Applications-A Review. Polymers (Basel) 2021; 13:4307. [PMID: 34960858 PMCID: PMC8708131 DOI: 10.3390/polym13244307] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 11/29/2021] [Accepted: 12/06/2021] [Indexed: 12/12/2022] Open
Abstract
Natural polymers, such as polysaccharides and polypeptides, are potential candidates to serve as carriers of biomedical cargo. Natural polymer-based carriers, having a core-shell structural configuration, offer ample scope for introducing multifunctional capabilities and enable the simultaneous encapsulation of cargo materials of different physical and chemical properties for their targeted delivery and sustained and stimuli-responsive release. On the other hand, carriers with a porous matrix structure offer larger surface area and lower density, in order to serve as potential platforms for cell culture and tissue regeneration. This review explores the designing of micro- and nano-metric core-shell capsules and porous spheres, based on various functions. Synthesis approaches, mechanisms of formation, general- and function-specific characteristics, challenges, and future perspectives are discussed. Recent advances in protein-based carriers with a porous matrix structure and different core-shell configurations are also presented in detail.
Collapse
Affiliation(s)
- Kusha Sharma
- Department of Chemistry, Bar-Ilan Institute for Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 52900, Israel;
| | - Ze’ev Porat
- Department of Civil and Environmental Engineering, Ben-Gurion University of the Negev, Be’er Sheva 84105, Israel
- Department of Chemistry, Nuclear Research Center-Negev, Be’er Sheva 84190, Israel
| | - Aharon Gedanken
- Department of Chemistry, Bar-Ilan Institute for Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 52900, Israel;
| |
Collapse
|
26
|
Wu N, Schultz KM. Correlation of Bulk Degradation and Molecular Release from Enzymatically Degradable Polymeric Hydrogels. Biomacromolecules 2021; 22:4489-4500. [PMID: 34516089 DOI: 10.1021/acs.biomac.1c00719] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this work, we establish a quantitative correlation between molecular release and material degradation. We characterize a radical-initiated photopolymerized hydrogel and base-initiated Michael addition-polymerized hydrogel, which form gels through distinct crosslinking reactions. Both scaffolds use the same degradable peptide crosslinker, which enables them to be degraded through the same enzymatic degradation reaction. A fluorescently labeled poly(ethylene glycol) molecule is chemically conjugated into the scaffold and is released during enzymatic degradation. Real-time changes in scaffold rheological properties during degradation are measured using bulk rheology. Molecular release is measured by quantifying the change in fluorescence in the incubation liquid and the hydrogel scaffold. A complicating factor, previously described in the literature, is that shear may cause increased crosslinking, resulting in an increase in the storage modulus after initiation of degradation, which changes release profiles by limiting the initial release of molecules. Therefore, we also test the hypothesis that shear induces additional crosslinking in degrading hydrogel scaffolds. To determine whether shear changes rheological properties during scaffold degradation, enzymatic degradation is characterized using bulk rheology as materials undergo continuous or minimal shear. To determine the effect of shear on molecular release, shear is induced by shaking the material during incubation. Release is characterized from scaffolds that are incubated with continuous or without shaking. We determine that shear does not make a difference in scaffold degradation or release regardless of the gelation reaction. Instead, we determine that the type of hydrogel crosslinking reaction greatly affects both material degradation and molecular release. A hydrogel crosslinking by base-initiated Michael addition does undergo further crosslinking at the start of degradation. We correlate release with enzymatic degradation for both scaffolds. We determine that the material storage modulus is indirectly correlated with release during degradation. These results indicate that rheological characterization is a useful tool to characterize and predict the release of molecules from degrading hydrogels.
Collapse
Affiliation(s)
- Nan Wu
- Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Kelly M Schultz
- Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| |
Collapse
|
27
|
Wong SK, Lawrencia D, Supramaniam J, Goh BH, Manickam S, Wong TW, Pang CH, Tang SY. In vitro Digestion and Swelling Kinetics of Thymoquinone-Loaded Pickering Emulsions Incorporated in Alginate-Chitosan Hydrogel Beads. Front Nutr 2021; 8:752207. [PMID: 34671634 PMCID: PMC8520899 DOI: 10.3389/fnut.2021.752207] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 09/10/2021] [Indexed: 11/25/2022] Open
Abstract
The present work aimed to investigate the swelling behavior, in vitro digestion, and release of a hydrophobic bioactive compound, thymoquinone (TQ), loaded in Pickering emulsion incorporated in alginate-chitosan hydrogel beads using a simulated gastrointestinal model. In this study, oil-in-water Pickering emulsions of uniform micron droplet sizes were formulated using 20% red palm olein and 0.5% (w/v) cellulose nanocrystals-soy protein isolate (CNC/SPI) complex followed by encapsulation within beads. FT-IR was used to characterize the bonding between the alginate, chitosan, and Pickering emulsion. 2% (w/v) alginate-1% (w/v) chitosan hydrogel beads were found to be spherical with higher stability against structural deformation. The alginate-chitosan beads displayed excellent stability in simulated gastric fluid (SGF) with a low water uptake of ~19%. The hydrogel beads demonstrated a high swelling degree (85%) with a superior water uptake capacity of ~593% during intestinal digestion in simulated intestinal fluid (SIF). After exposure to SIF, the microstructure transformation was observed, causing erosion and degradation of alginate/chitosan wall materials. The release profile of TQ up to 83% was achieved in intestinal digestion, and the release behavior was dominated by diffusion via the bead swelling process. These results provided useful insight into the design of food-grade colloidal delivery systems using protein-polysaccharide complex-stabilized Pickering emulsions incorporated in alginate-chitosan hydrogel beads.
Collapse
Affiliation(s)
- See Kiat Wong
- Chemical Engineering Discipline, School of Engineering, Monash University Malaysia, Subang Jaya, Malaysia
| | - Dora Lawrencia
- Chemical Engineering Discipline, School of Engineering, Monash University Malaysia, Subang Jaya, Malaysia
| | - Janarthanan Supramaniam
- Chemical Engineering Discipline, School of Engineering, Monash University Malaysia, Subang Jaya, Malaysia
| | - Bey Hing Goh
- Biofunctional Molecule Exploratory Research Group, School of Pharmacy, Monash University Malaysia, Subang Jaya, Malaysia.,College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Sivakumar Manickam
- Petroleum and Chemical Engineering, Faculty of Engineering, Universiti Teknologi Brunei, Bandar Seri Begawan, Brunei
| | - Tin Wui Wong
- Non-Destructive Biomedical and Pharmaceutical Research Centre, Smart Manufacturing Research Institute, Universiti Teknologi MARA, Puncak Alam, Malaysia
| | - Cheng Heng Pang
- Department of Chemical and Environmental Engineering, The University of Nottingham Ningbo China, Ningbo, China.,New Materials Institute, The University of Nottingham Ningbo China, Ningbo, China.,Municipal Key Laboratory of Clean Energy Conversion Technologies, The University of Nottingham Ningbo China, Ningbo, China
| | - Siah Ying Tang
- Chemical Engineering Discipline, School of Engineering, Monash University Malaysia, Subang Jaya, Malaysia.,Advanced Engineering Platform, School of Engineering, Monash University Malaysia, Subang Jaya, Malaysia.,Tropical Medicine and Biology Platform, School of Science, Monash University Malaysia, Subang Jaya, Malaysia
| |
Collapse
|
28
|
Tremi I, Spyratou E, Souli M, Efstathopoulos EP, Makropoulou M, Georgakilas AG, Sihver L. Requirements for Designing an Effective Metallic Nanoparticle (NP)-Boosted Radiation Therapy (RT). Cancers (Basel) 2021; 13:cancers13133185. [PMID: 34202342 PMCID: PMC8269428 DOI: 10.3390/cancers13133185] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 06/23/2021] [Accepted: 06/24/2021] [Indexed: 12/12/2022] Open
Abstract
Simple Summary Recent advances in nanotechnology gave rise to trials with various types of metallic nanoparticles (NPs) to enhance the radiosensitization of cancer cells while reducing or maintaining the normal tissue complication probability during radiation therapy. This work reviews the physical and chemical mechanisms leading to the enhancement of ionizing radiation’s detrimental effects on cells and tissues, as well as the plethora of experimental procedures to study these effects of the so-called “NPs’ radiosensitization”. The paper presents the need to a better understanding of all the phases of actions before applying metallic-based NPs in clinical practice to improve the effect of IR therapy. More physical and biological experiments especially in vivo must be performed and simulation Monte Carlo or mathematical codes based on more accurate models for all phases must be developed. Abstract Many different tumor-targeted strategies are under development worldwide to limit the side effects and improve the effectiveness of cancer therapies. One promising method is to enhance the radiosensitization of the cancer cells while reducing or maintaining the normal tissue complication probability during radiation therapy using metallic nanoparticles (NPs). Radiotherapy with MV photons is more commonly available and applied in cancer clinics than high LET particle radiotherapy, so the addition of high-Z NPs has the potential to further increase the efficacy of photon radiotherapy in terms of NP radiosensitization. Generally, when using X-rays, mainly the inner electron shells are ionized, which creates cascades of both low and high energy Auger electrons. When using high LET particles, mainly the outer shells are ionized, which give electrons with lower energies than when using X-rays. The amount of the produced low energy electrons is higher when exposing NPs to heavy charged particles than when exposing them to X-rays. Since ions traverse the material along tracks, and therefore give rise to a much more inhomogeneous dose distributions than X-rays, there might be a need to introduce a higher number of NPs when using ions compared to when using X-rays to create enough primary and secondary electrons to get the desired dose escalations. This raises the questions of toxicity. This paper provides a review of the fundamental processes controlling the outcome of metallic NP-boosted photon beam and ion beam radiation therapy and presents some experimental procedures to study the biological effects of NPs’ radiosensitization. The overview shows the need for more systematic studies of the behavior of NPs when exposed to different kinds of ionizing radiation before applying metallic-based NPs in clinical practice to improve the effect of IR therapy.
Collapse
Affiliation(s)
- Ioanna Tremi
- DNA Damage Laboratory, Department of Physics, School of Applied Mathematical and Physical Sciences, Zografou Campus, National Technical University of Athens (NTUA), 15780 Athens, Greece; (I.T.); (M.S.); (M.M.)
| | - Ellas Spyratou
- 2nd Department of Radiology, Medical School, National and Kapodistrian University of Athens, 11517 Athens, Greece; (E.S.); (E.P.E.)
| | - Maria Souli
- DNA Damage Laboratory, Department of Physics, School of Applied Mathematical and Physical Sciences, Zografou Campus, National Technical University of Athens (NTUA), 15780 Athens, Greece; (I.T.); (M.S.); (M.M.)
- Atominstitut, Technische Universität Wien, Stadionallee 2, 1020 Vienna, Austria
| | - Efstathios P. Efstathopoulos
- 2nd Department of Radiology, Medical School, National and Kapodistrian University of Athens, 11517 Athens, Greece; (E.S.); (E.P.E.)
| | - Mersini Makropoulou
- DNA Damage Laboratory, Department of Physics, School of Applied Mathematical and Physical Sciences, Zografou Campus, National Technical University of Athens (NTUA), 15780 Athens, Greece; (I.T.); (M.S.); (M.M.)
| | - Alexandros G. Georgakilas
- DNA Damage Laboratory, Department of Physics, School of Applied Mathematical and Physical Sciences, Zografou Campus, National Technical University of Athens (NTUA), 15780 Athens, Greece; (I.T.); (M.S.); (M.M.)
- Correspondence: (A.G.G.); (L.S.)
| | - Lembit Sihver
- Atominstitut, Technische Universität Wien, Stadionallee 2, 1020 Vienna, Austria
- Department of Physics, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
- Correspondence: (A.G.G.); (L.S.)
| |
Collapse
|
29
|
Effect of Different Physical Cross-Linkers on Drug Release from Hydrogel Layers Coated on Magnetically Steerable 3D-Printed Microdevices. TECHNOLOGIES 2021. [DOI: 10.3390/technologies9020043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In the last few decades, the introduction of microrobotics has drastically changed the way medicine will be approached in the future. The development of untethered steerable microdevices able to operate in vivo inside the human body allows a high localization of the therapeutical action, thus limiting invasiveness and possible medical complications. This approach results are particularly useful in drug delivery, where it is highly beneficial to administer the drug of choice exclusively to the target organ to avoid overdosage and side effects. In this context, drug releasing layers can be loaded on magnetically moveable platforms that can be guided toward the target organ to perform highly targeted release. In the present paper, we evaluate the possible application of alginate hydrogel layers on moveable platforms manufactured by coupling additive manufacturing with wet metallization. Such alginate layers are reticulated using three different physical crosslinkers: Ca, Zn or Mn. Their effect on drug release kinetics and on device functionality is evaluated. In the case of alginate reticulated using Mn, the strongly pH dependent behavior of the resulting hydrogel is evaluated as a possible way to introduce a triggered release functionality on the devices.
Collapse
|
30
|
Preparation and characterization of native starch-ibuprofen molecular inclusion complexes. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102509] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
31
|
Li F, Wang X, Wang H, Mei X. Preparation and characterization of phytosterol-loaded nanoparticles with sodium caseinate/dextran conjugates. Food Sci Biotechnol 2021; 30:531-539. [PMID: 33936844 DOI: 10.1007/s10068-021-00885-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 01/10/2021] [Accepted: 01/26/2021] [Indexed: 11/29/2022] Open
Abstract
Sodium caseinate (SC)/dextran conjugates were prepared via Maillard reaction under controlled dry-heating conditions. Moreover, the nanoparticles of phytosterols (PS) encapsulated by SC or SC/dextran were produced using the emulsion evaporation method. The encapsulation efficiency (78.81 ± 5.22%) of PS in SC/dextran nanoparticles was higher than that (73.5 ± 2.78%) in SC nanoparticles. Compared with the compact and dense structure of SC nanoparticles, SC/dextran nanoparticles existed as relatively loose aggregates. The result of differential scanning calorimetry demonstrated that the encapsulation of PS greatly decreased its crystallinity. The released rates of PS from SC and SC/dextran nanoparticles under acidic gastric conditions were 8.59% and 4.73%, respectively. After 7 h of intestinal digestion, the released rate (52.19%) of PS from SC/dextran nanoparticles was significantly higher than that from SC (32.67%) nanoparticles. Therefore, SC/dextran conjugates prepared by the Maillard reaction are more suitable to be used as wall material for the nano-encapsulation of PS.
Collapse
Affiliation(s)
- Feifan Li
- No. 17 Qinghua East Road, Haidian District, Beijing, 100083 China
| | - Xiaoli Wang
- No. 17 Qinghua East Road, Haidian District, Beijing, 100083 China
| | - Hongfu Wang
- No. 17 Qinghua East Road, Haidian District, Beijing, 100083 China
| | - Xiaohong Mei
- No. 17 Qinghua East Road, Haidian District, Beijing, 100083 China
| |
Collapse
|
32
|
Agarwal P, Greene DG, Sherman S, Wendl K, Vega L, Park H, Shimanovich R, Reid DL. Structural characterization and developability assessment of sustained release hydrogels for rapid implementation during preclinical studies. Eur J Pharm Sci 2021; 158:105689. [PMID: 33359482 DOI: 10.1016/j.ejps.2020.105689] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 11/12/2020] [Accepted: 12/17/2020] [Indexed: 10/22/2022]
Abstract
Sustained-release formulations are important tools to convert efficacious molecules into therapeutic products. Hydrogels enable the rapid assessment of sustained-release strategies, which are important during preclinical development where drug quantities are limited and fast turnaround times are the norm. Most research in hydrogel-based drug delivery has focused around synthesizing new materials and polymers, with limited focus on structural characterization, technology developability and implementation. Two commercially available thermosensitive hydrogel systems, comprised of block copolymers of poly(lactic-co-glycolic acid)-b-poly(ethylene glycol)-b-poly(lactic-co-glycolic acid) (PLGA) and poly(lactide-co-caprolactone)-b-poly(ethyleneglycol)-b-poly(lactide-co-caprolactone) (PLCL), were evaluated during this study. The two block copolymers described in the study were successfully formulated to form hydrogels which delayed the release of lysozyme (> 20 days) in vitro. Characterization of formulation attributes of the hydrogels like Tsol-gel temperature, complex viscosity and injection force showed that these systems are amenable to rapid implementation in preclinical studies. Understanding the structure of the gel network is critical to determine the factors controlling the release of therapeutics out of these gels. The structures were characterized via the gel mesh sizes, which were estimated using two orthogonal techniques: small angle X-ray scattering (SAXS) and rheology. The mesh sizes of these hydrogels were larger than the hydrodynamic radius (size) of lysozyme (drug), indicating that release through these gels is expected to be diffusive at all time scales rather than sub-diffusive. In vitro drug release experiments confirm that diffusion is the dominating mechanism for lysozyme release; with no contribution from degradation, erosion, relaxation, swelling of the polymer network or drug-polymer interactions. PLGA hydrogel was found to have a much higher complex viscosity than PLCL hydrogel, which correlates with the slower diffusivity and release of lysozyme seen from the PLGA hydrogel as compared to PLCL hydrogel. This is due to the increased frictional drag experienced by the lysozyme molecule in the PLGA hydrogel network, as described by the hydrodynamic theory.
Collapse
Affiliation(s)
- Prashant Agarwal
- Drug Product Technologies, Process Development, Amgen, Inc., 360 Binney St, Cambridge, MA 02142, United States.
| | - Daniel G Greene
- Drug Product Technologies, Process Development, Amgen, Inc., 360 Binney St, Cambridge, MA 02142, United States
| | - Scott Sherman
- Drug Product Technologies, Process Development, Amgen, Inc., 360 Binney St, Cambridge, MA 02142, United States
| | - Kaitlyn Wendl
- Drug Product Technologies, Process Development, Amgen, Inc., 360 Binney St, Cambridge, MA 02142, United States
| | - Leonela Vega
- Final Product Technologies, Process Development, Amgen Inc., 360 Binney St, Cambridge, MA 02142, United States
| | - Hyunsoo Park
- Drug Product Technologies, Process Development, Amgen, Inc., 360 Binney St, Cambridge, MA 02142, United States
| | - Roman Shimanovich
- Drug Product Technologies, Process Development, Amgen, Inc., 360 Binney St, Cambridge, MA 02142, United States
| | - Darren L Reid
- Drug Product Technologies, Process Development, Amgen, Inc., 360 Binney St, Cambridge, MA 02142, United States
| |
Collapse
|
33
|
Ayyoubi S, Cerda JR, Fernández-García R, Knief P, Lalatsa A, Healy AM, Serrano DR. 3D printed spherical mini-tablets: Geometry versus composition effects in controlling dissolution from personalised solid dosage forms. Int J Pharm 2021; 597:120336. [PMID: 33545280 DOI: 10.1016/j.ijpharm.2021.120336] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 01/27/2021] [Accepted: 01/31/2021] [Indexed: 12/22/2022]
Abstract
Oral dosage forms are by far the most common prescription and over-the-counter pharmaceutical dosage forms used worldwide. However, many patients suffer from adverse effects caused by their use of "one-size fits all" mass produced commercially available solid dosage forms, whereby they do not receive dedicated medication or dosage adjusted to their specific needs. The development of 3D printing paves the way for personalised medicine. This work focuses on personalised therapies for hypertensive patients using nifedipine as the model drug. 3D printed full solid and channelled spherical mini-tablets with enhanced surface area (1.6-fold higher) were printed using modified PVA commercial filaments loaded by passive diffusion (PD), and Kollidon VA64 (KVA) and ethylcellulose (EC) based filaments prepared by hot-melt extrusion (HME). Drug loading ranged from 3.7% to 60% based on the employed technique, with a 13-fold higher drug loading achieved with the HME compared to PD. Composition was found to have a more significant impact on drug dissolution than geometry and surface area. Both KVA and EC-based formulations exhibited a biphasic zero-order drug-release profile. Physicochemical characterization revealed that nifedipine was in the amorphous form in the KVA-based end-products which led to a greater dissolution control over a 24 h period compared to the EC-based formulations that exhibited low levels of crystallinity by PXRD. The proposed 3D printed spherical mini-tablets provide a versatile technology for personalised solid dosage forms with high drug loading and dissolution control, easily adaptable to patient and disease needs.
Collapse
Affiliation(s)
- Sejad Ayyoubi
- Department of Pharmaceutics and Food Science, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain; School of Pharmacy, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, the Netherlands
| | - Jose R Cerda
- Department of Pharmaceutics and Food Science, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Raquel Fernández-García
- Department of Pharmaceutics and Food Science, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Peter Knief
- UCD Centre for Precision Surgery, Catherine McAuley Education and Research Centre, Dublin 7, Ireland
| | - Aikaterini Lalatsa
- Biomaterials, Bio-engineering and Nanomedicine (BioN) Lab, Institute of Biomedical and Biomolecular Sciences, School of Pharmacy and Biomedical Sciences, University of Portsmouth, White Swan Road, Portsmouth PO1 2 DT, UK
| | - Anne Marie Healy
- SSPC The SFI Research Centre for Pharmaceuticals, School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Dublin 2, Ireland
| | - Dolores R Serrano
- Department of Pharmaceutics and Food Science, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain; Instituto de Farmacia Industrial y Galénica, School of Pharmacy, Universidad Complutense de Madrid, 28040 Madrid, Spain.
| |
Collapse
|
34
|
d'Orey P, Cordeiro T, Lourenço MAO, Matos I, Danède F, Sotomayor JC, Fonseca IM, Ferreira P, Correia NT, Dionísio M. How Molecular Mobility, Physical State, and Drug Distribution Influence the Naproxen Release Profile from Different Mesoporous Silica Matrices. Mol Pharm 2021; 18:898-914. [PMID: 33461296 DOI: 10.1021/acs.molpharmaceut.0c00908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Aiming to evaluate how the release profile of naproxen (nap) is influenced by its physical state, molecular mobility, and distribution in the host, this pharmaceutical drug was loaded in three different mesoporous silicas differing in their architecture and surface composition. Unmodified and partially silylated MCM-41 matrices, respectively MCM-41 and MCM-41sil, and a biphenylene-bridged periodic mesoporous organic matrix, PMOBph, were synthetized and used as drug carriers, having comparable pore sizes (∼3 nm) and loading percentages (∼30% w/w). The loaded guest was investigated by attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy, powder X-ray diffraction (XRD), differential scanning calorimetry (DSC), and dielectric relaxation spectroscopy (DRS). DSC and XRD confirmed amorphization of a nap fraction incorporated inside the pores. A narrower glass transition was detected for PMOBph_nap, taken as an indication of the impact of host ordering, which also hinders the guest molecular mobility inside the pores as probed by DRS. While the PMOBph matrix is highly hydrophobic, the unmodified MCM-41 readily adsorbs water, accelerating the nap relaxation rate in the respective composite. In the dehydrated state, the faster dynamics was found for the silylated matrix since guest-host hydrogen bond interactions were inhibited to some extent by methylation. Nevertheless, in all the prepared composites, bulk-like crystalline drug deposits outside pores in a greater extent in PMOBph_nap. The DRS measurements analyzed in terms of conductivity show that, upon melting, nap easily migrates into pores in MCM-41-based composites, while it stays in the outer surface in the ordered PMOBph, determining a faster nap delivery from the latter matrix. On the other side, the mobility enhancement in the hydrated state controls the drug delivery in the unmodified MCM-41 matrix vs the silylated one. Therefore, DRS proved to be a suitable technique to disclose the influence of the ordering of the host surface and its chemical modification on the guest behavior, and, through conductivity depletion, it provides a mean to monitor the guest entrance inside the pores, easily followed even by untrained spectroscopists.
Collapse
Affiliation(s)
- Piedade d'Orey
- LAQV-REQUIMTE/CQFB, Departamento de Química, Faculdade de Ciências e Tecnologia - Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - Teresa Cordeiro
- LAQV-REQUIMTE/CQFB, Departamento de Química, Faculdade de Ciências e Tecnologia - Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - Mirtha A O Lourenço
- CICECO, Department of Materials and Ceramic Engineering, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.,Istituto Italiano di Tecnologia - IIT, Center for Sustainable Future Technologies (CSFT), Via Livorno 60, 10144 Torino, Italy
| | - Inês Matos
- LAQV-REQUIMTE/CQFB, Departamento de Química, Faculdade de Ciências e Tecnologia - Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - Florence Danède
- CICECO, Department of Materials and Ceramic Engineering, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - João C Sotomayor
- LAQV-REQUIMTE/CQFB, Departamento de Química, Faculdade de Ciências e Tecnologia - Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - Isabel M Fonseca
- LAQV-REQUIMTE/CQFB, Departamento de Química, Faculdade de Ciências e Tecnologia - Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - Paula Ferreira
- CICECO, Department of Materials and Ceramic Engineering, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Natália T Correia
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, F-59000 Lille, France
| | - Madalena Dionísio
- LAQV-REQUIMTE/CQFB, Departamento de Química, Faculdade de Ciências e Tecnologia - Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| |
Collapse
|
35
|
Hydrogels as Drug Delivery Systems: A Review of Current Characterization and Evaluation Techniques. Pharmaceutics 2020; 12:pharmaceutics12121188. [PMID: 33297493 PMCID: PMC7762425 DOI: 10.3390/pharmaceutics12121188] [Citation(s) in RCA: 140] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/18/2020] [Accepted: 11/19/2020] [Indexed: 12/15/2022] Open
Abstract
Owing to their tunable properties, controllable degradation, and ability to protect labile drugs, hydrogels are increasingly investigated as local drug delivery systems. However, a lack of standardized methodologies used to characterize and evaluate drug release poses significant difficulties when comparing findings from different investigations, preventing an accurate assessment of systems. Here, we review the commonly used analytical techniques for drug detection and quantification from hydrogel delivery systems. The experimental conditions of drug release in saline solutions and their impact are discussed, along with the main mathematical and statistical approaches to characterize drug release profiles. We also review methods to determine drug diffusion coefficients and in vitro and in vivo models used to assess drug release and efficacy with the goal to provide guidelines and harmonized practices when investigating novel hydrogel drug delivery systems.
Collapse
|
36
|
Bil M, Hipś I, Mrówka P, Święszkowski W. Studies on enzymatic degradation of multifunctional composite consisting of chitosan microspheres and shape memory polyurethane matrix. Polym Degrad Stab 2020. [DOI: 10.1016/j.polymdegradstab.2020.109392] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
37
|
Mueller R, Moreau M, Yasmin-Karim S, Protti A, Tillement O, Berbeco R, Hesser J, Ngwa W. Imaging and Characterization of Sustained Gadolinium Nanoparticle Release from Next Generation Radiotherapy Biomaterial. NANOMATERIALS 2020; 10:nano10112249. [PMID: 33202903 PMCID: PMC7697013 DOI: 10.3390/nano10112249] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 11/03/2020] [Accepted: 11/08/2020] [Indexed: 11/16/2022]
Abstract
Smart radiotherapy biomaterials (SRBs) present a new opportunity to enhance image-guided radiotherapy while replacing routinely used inert radiotherapy biomaterials like fiducials. In this study the potential of SRBs loaded with gadolinium-based nanoparticles (GdNPs) is investigated for magnetic resonance imaging (MRI) contrast. GdNP release from SRB is quantified and modelled for accurate prediction. SRBs were manufactured similar to fiducials, with a cylindrical shell consisting of poly(lactic-co-glycolic) acid (PLGA) and a core loaded with GdNPs. Magnetic resonance imaging (MRI) contrast was investigated at 7T in vitro (in agar) and in vivo in subcutaneous tumors grown with the LLC1 lung cancer cell line in C57/BL6 mice. GdNPs were quantified in-phantom and in tumor and their release was modelled by the Weibull distribution. Gd concentration was linearly fitted to the R1 relaxation rate with a detection limit of 0.004 mmol/L and high confidence level (R2 = 0.9843). GdNP loaded SRBs in tumor were clearly visible up to at least 14 days post-implantation. Signal decrease during this time showed GdNP release in vivo, which was calculated as 3.86 ± 0.34 µg GdNPs release into the tumor. This study demonstrates potential and feasibility for SRBs with MRI-contrast, and sensitive GdNP quantification and release from SRBs in a preclinical animal model. The feasibility of monitoring nanoparticle (NP) concentration during treatment, allowing dynamic quantitative treatment planning, is also discussed.
Collapse
Affiliation(s)
- Romy Mueller
- Department Data Analysis and Modeling in Medicine, Mannheim Institute for Intelligent Systems in Medicine (MIISM), Heidelberg University, 69117 Heidelberg, Germany;
- Department of Radiation Oncology, Brigham and Women’s Hospital, Dana-Farber Cancer Institute, Boston, MA 02115, USA; (M.M.); (S.Y.-K.); (R.B.); (W.N.)
- Correspondence:
| | - Michele Moreau
- Department of Radiation Oncology, Brigham and Women’s Hospital, Dana-Farber Cancer Institute, Boston, MA 02115, USA; (M.M.); (S.Y.-K.); (R.B.); (W.N.)
- Department of Radiation Oncology, Harvard Medical School, Boston, MA 02115, USA
- Department of Physics, University of Massachusetts Lowell, Lowell, MA 01854, USA
| | - Sayeda Yasmin-Karim
- Department of Radiation Oncology, Brigham and Women’s Hospital, Dana-Farber Cancer Institute, Boston, MA 02115, USA; (M.M.); (S.Y.-K.); (R.B.); (W.N.)
- Department of Radiation Oncology, Harvard Medical School, Boston, MA 02115, USA
| | - Andrea Protti
- Department of Imaging, Lurie Family Imaging Center, Center for Biomedical Imaging in Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02110, USA;
| | - Olivier Tillement
- Institut Lumière Matière, CNRS, Université de Lyon, 69622 Villeurbanne, France;
| | - Ross Berbeco
- Department of Radiation Oncology, Brigham and Women’s Hospital, Dana-Farber Cancer Institute, Boston, MA 02115, USA; (M.M.); (S.Y.-K.); (R.B.); (W.N.)
- Department of Radiation Oncology, Harvard Medical School, Boston, MA 02115, USA
| | - Jürgen Hesser
- Department Data Analysis and Modeling in Medicine, Mannheim Institute for Intelligent Systems in Medicine (MIISM), Heidelberg University, 69117 Heidelberg, Germany;
- Interdisciplinary Center for Scientific Computing (IWR), Heidelberg University, 69120 Heidelberg, Germany
- Central Institute for Computer Engineering (ZITI), Heidelberg University, 68159 Mannheim, Germany
| | - Wilfred Ngwa
- Department of Radiation Oncology, Brigham and Women’s Hospital, Dana-Farber Cancer Institute, Boston, MA 02115, USA; (M.M.); (S.Y.-K.); (R.B.); (W.N.)
- Department of Radiation Oncology, Harvard Medical School, Boston, MA 02115, USA
- Department of Physics, University of Massachusetts Lowell, Lowell, MA 01854, USA
| |
Collapse
|
38
|
Malekjani N, Jafari SM. Modeling the release of food bioactive ingredients from carriers/nanocarriers by the empirical, semiempirical, and mechanistic models. Compr Rev Food Sci Food Saf 2020; 20:3-47. [PMID: 33443795 DOI: 10.1111/1541-4337.12660] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 09/29/2020] [Accepted: 09/30/2020] [Indexed: 12/26/2022]
Abstract
The encapsulation process has been utilized in the field of food technology to enhance the technofunctional properties of food products and the delivery of nutraceutical ingredients via food into the human body. The latter application is very similar to drug delivery systems. The inherent sophisticated nature of release mechanisms requires the utilization of mathematical equations and statistics to predict the release behavior during the time. The science of mathematical modeling of controlled release has gained a tremendous advancement in drug delivery in recent years. Many of these modeling methods could be transferred to food. In order to develop and design enhanced food controlled/targeted bioactive release systems, understanding of the underlying physiological and chemical processes, mechanisms, and principles of release and applying the knowledge gained in the pharmaceutical field to food products is a big challenge. Ideally, by using an appropriate mathematical model, the formulation parameters could be predicted to achieve a specific release behavior. So, designing new products could be optimized. Many papers are dealing with encapsulation approaches and evaluation of the impact of process and the utilized system on release characteristics of encapsulated food bioactives, but still, there is no deep insight into the mathematical release modeling of encapsulated food materials. In this study, information gained from the pharmaceutical field is collected and discussed to investigate the probable application in the food industry.
Collapse
Affiliation(s)
- Narjes Malekjani
- Department of Food Science and Technology, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran
| | - Seid Mahdi Jafari
- Faculty of Food Science and Technology, Gorgan University of Agricultural Science and Natural Resources, Gorgan, Iran
| |
Collapse
|
39
|
Sun R, Xia Q. In vitro digestion behavior of (W1/O/W2) double emulsions incorporated in alginate hydrogel beads: Microstructure, lipolysis, and release. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2020.105950] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
40
|
Evaluation of the Drug Release Kinetics in Assembled Modular Systems Based on the Dome Matrix Technology. J Pharm Sci 2020; 109:2819-2826. [DOI: 10.1016/j.xphs.2020.06.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 06/04/2020] [Accepted: 06/05/2020] [Indexed: 11/21/2022]
|
41
|
Agnoletti M, Rodríguez-Rodríguez C, Kłodzińska SN, Esposito TVF, Saatchi K, Mørck Nielsen H, Häfeli UO. Monosized Polymeric Microspheres Designed for Passive Lung Targeting: Biodistribution and Pharmacokinetics after Intravenous Administration. ACS NANO 2020; 14:6693-6706. [PMID: 32392034 DOI: 10.1021/acsnano.9b09773] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Local as well as systemic therapy is often used to treat bacterial lung infections. Delivery of antibiotics to the vascular side of infected lung tissue using lung-targeting microspheres (MS) is a good alternative to conventional administration routes, allowing for localized high levels of antibiotics. This delivery route can also complement inhaled antibiotic therapy, especially in the case of compromised lung function. We prepared and characterized monodisperse poly(lactic-co-glycolic acid) (PLGA) MS loaded with levofloxacin using a flow-focusing glass microfluidic chip. In vitro characterization showed that the encapsulated LVX displayed a biphasic controlled release during 5 days and preserved its antibacterial activity. The MS degradation was investigated in vitro by cross-sectioning the MS using a focused ion beam scanning electron microscope and in vivo by histological examination of lung tissue from mice intravenously administered with the MS. The MS showed changes in the surface morphology and internal matrix, whereas the degradation in vivo was 3 times faster than that in vitro. No effect on the viability of endothelial and lung epithelial cells or hemolytic activity was observed. To evaluate the pharmacokinetics and biodistribution of the MS, complete quantitative imaging of the 111indium-labeled PLGA MS was performed in vivo with single-photon emission computed tomography imaging over 10 days. The PLGA MS distributed homogeneously in the lung capillaries. Overall, intravenous administration of 12 μm PLGA MS is suitable for passive lung targeting and pulmonary therapy.
Collapse
Affiliation(s)
- Monica Agnoletti
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen DK-2100, Denmark
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Cristina Rodríguez-Rodríguez
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
- Department of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T 1Z1, Canada
| | - Sylvia N Kłodzińska
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen DK-2100, Denmark
| | - Tullio V F Esposito
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen DK-2100, Denmark
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Katayoun Saatchi
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Hanne Mørck Nielsen
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen DK-2100, Denmark
| | - Urs O Häfeli
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen DK-2100, Denmark
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| |
Collapse
|
42
|
Shen M, Cao H, Robertson ML. Hydrolysis and Solvolysis as Benign Routes for the End-of-Life Management of Thermoset Polymer Waste. Annu Rev Chem Biomol Eng 2020; 11:183-201. [PMID: 32250651 DOI: 10.1146/annurev-chembioeng-120919-012253] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The production of thermoset polymers is increasing globally owing to their advantageous properties, particularly when applied as composite materials. Though these materials are traditionally used in more durable, longer-lasting applications, ultimately, they become waste at the end of their usable lifetimes. Current recycling practices are not applicable to traditional thermoset waste, owing to their network structures and lack of processability. Recently, researchers have been developing thermoset polymers with the right functionalities to be chemically degraded under relatively benign conditions postuse, providing a route to future management of thermoset waste. This review presents thermosets containing hydrolytically or solvolytically cleavable bonds, such as esters and acetals. Hydrolysis and solvolysis mechanisms are discussed, and various factors that influence the degradation rates are examined. Degradable thermosets with impressive mechanical, thermal, and adhesion behavior are discussed, illustrating that the design of material end-of-life need not limit material performance.
Collapse
Affiliation(s)
- Minjie Shen
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204-4004, USA;
| | - Hongda Cao
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204-4004, USA;
| | - Megan L Robertson
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204-4004, USA;
| |
Collapse
|
43
|
Impact of Insoluble Separation Layer Mechanical Properties on Disintegration and Dissolution Kinetics of Multilayer Tablets. Pharmaceutics 2020; 12:pharmaceutics12060495. [PMID: 32485803 PMCID: PMC7356680 DOI: 10.3390/pharmaceutics12060495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 05/14/2020] [Accepted: 05/28/2020] [Indexed: 11/23/2022] Open
Abstract
Dissolution and disintegration of solid dosage forms such as multiple-layer tablet with different active ingredients depend on formulation and properties used in the formulations, and it may sometimes result in counterintuitive release kinetics. In this manuscript, we investigate the behavior of combined acetylsalicylic acid and mefenamic acid bi- and triple-layer formulations. We show that the simulation model with a cellular automata predicted the impact of the inert layer between the different active ingredients on each drug release and provide a good agreement with the experimental results. Also, it is shown that the analysis based on the Noyes–Whitney equation in combination with a cellular automata-supported dissolution and disintegration numerical solutions explain the nature of the unexpected effects. We conclude that the proposed simulation approach is valuable to predict the influence of material attributes and process parameters on drug release from multicomponent and multiple-layer pharmaceutical tablets and to help us develop the drug product formulation.
Collapse
|
44
|
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]
|
45
|
Personalised 3D Printed Medicines: Optimising Material Properties for Successful Passive Diffusion Loading of Filaments for Fused Deposition Modelling of Solid Dosage Forms. Pharmaceutics 2020; 12:pharmaceutics12040345. [PMID: 32290400 PMCID: PMC7238181 DOI: 10.3390/pharmaceutics12040345] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 04/03/2020] [Accepted: 04/09/2020] [Indexed: 11/16/2022] Open
Abstract
Although not readily accessible yet to many community and hospital pharmacists, fuse deposition modelling (FDM) is a 3D printing technique that can be used to create a 3D pharmaceutical dosage form by employing drug loaded filaments extruded via a nozzle, melted and deposited layer by layer. FDM requires printable filaments, which are commonly manufactured by hot melt extrusion, and identifying a suitable extrudable drug-excipient mixture can sometimes be challenging. We propose here the use of passive diffusion as an accessible loading method for filaments that can be printed using FDM technology to allow for the fabrication of oral personalised medicines in clinical settings. Utilising Hansen Solubility Parameters (HSP) and the concept of HSP distances (Ra) between drug, solvent, and filament, we have developed a facile pre-screening tool for the selection of the optimal combination that can provide a high drug loading (a high solvent-drug Ra, >10, and an intermediate solvent-filament Ra value, ~10). We have identified that other parameters such as surface roughness and stiffness also play a key role in enhancing passive diffusion of the drug into the filaments. A predictive model for drug loading was developed based on Support Vector Machine (SVM) regression and indicated a strong correlation between both Ra and filament stiffness and the diffusion capacity of a model BCS Class II drug, nifedipine (NFD), into the filaments. A drug loading, close to 3% w/w, was achieved. 3D printed tablets prepared using a PVA-derived filament (Hydrosupport, 3D Fuel) showed promising characteristics in terms of dissolution (with a sustained release over 24 h) and predicted chemical stability (>3 years at 25 °C/60% relative humidity), similar to commercially available NFD oral dosage forms. We believe FDM coupled with passive diffusion could be implemented easily in clinical settings for the manufacture of tailored personalised medicines, which can be stored over long periods of time (similar to industrially manufactured solid dosage forms).
Collapse
|
46
|
Luo C, Wu S, Li J, Li X, Yang P, Li G. Chitosan/calcium phosphate flower-like microparticles as carriers for drug delivery platform. Int J Biol Macromol 2020; 155:174-183. [PMID: 32222289 DOI: 10.1016/j.ijbiomac.2020.03.172] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/16/2020] [Accepted: 03/19/2020] [Indexed: 12/20/2022]
Abstract
A special flower-like chitosan (CS)/calcium phosphate (CaP) microparticle was fabricated as a novel pH-sensitive carrier for sustained release drug system via a rapid one-pot approach. The CS-tripolyphosphate (TPP) nanocomplexes were firstly prepared through ionotropic gelation. Then, the CS nanocomplexes network acted as the template and inducer for adsorbing the mineralized CaP nanosheets and directing its assembly into the flower-like microparticles. The preparation condition optimized by Box-Behnken design-response surface methodology was achieved with 3.16 mg/ml of CS, 127.22 mg/ml of TPP, and 89.50 mM of CaCl2. The morphologies of the system were observed by scanning electron microscopy (SEM) and transmission electron microscope (TEM), and it showed that the flower-like microparticles with a diameter of 5-7 μm are composed of sheet-like petals with about 40 nm in thickness. And the TEM results showed that the petals consist by nanosheets with the thickness of 2-5 nm. The X-ray diffraction (XRD) results showed that the P/Ca ratio of CS/CaP microparticles is 1.29/1. The in vitro release studies demonstrated well sustained-release properties and pH-sensitive releasing characteristic of CS/CaP microparticles. The drug release mechanism was fitted by Korsmeyer-Peppas model at a pH of 5.8 and 7.4, respectively. The in vitro cell viability research demonstrated the microparticles have no obvious cytotoxicity at the dosages below 500 μg/ml. This work supplied a versatile platform as a novel drug delivery system with excellent pH-sensitive and sustained release performances.
Collapse
Affiliation(s)
- Chao Luo
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China; Department of Medicine and Health, Shaoxing University Yuanpei College, Shaoxing 312000, China
| | - Shizhao Wu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Jiao Li
- Department of Medicine and Health, Shaoxing University Yuanpei College, Shaoxing 312000, China
| | - Xiaoqin Li
- Department of Medicine and Health, Shaoxing University Yuanpei College, Shaoxing 312000, China
| | - Peng Yang
- Department of Medicine and Health, Shaoxing University Yuanpei College, Shaoxing 312000, China
| | - Guohua Li
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| |
Collapse
|
47
|
Degradable porous drug-loaded polymer scaffolds for localized cancer drug delivery and breast cell/tissue growth. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 112:110794. [PMID: 32409024 DOI: 10.1016/j.msec.2020.110794] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 01/25/2020] [Accepted: 02/29/2020] [Indexed: 12/14/2022]
Abstract
This paper presents the results of a combined experimental and analytical study of blended FDA-approved polymers [polylactic-co-glycolic acid (PLGA), polyethylene glycol (PEG) and polycaprolactone (PCL)] with the potential for sustained localized cancer drug release. Porous drug-loaded 3D degradable PLGA-PEG and PLGA-PCL scaffolds were fabricated using a multistage process that involved solvent casting and particulate leaching with lyophilization. The physicochemical properties including the mechanical, thermal and biostructural properties of the drug-loaded microporous scaffolds were characterized. The release of the encapsulated prodigiosin (PG) or paclitaxel (PTX) drug (from the drug-loaded polymer scaffolds) was also studied experimentally at human body temperature (37 °C) and hyperthermic temperatures (41 and 44 °C). These characteristic controlled and localized in vitro drug release from the properties of the microporous scaffold were analyzed using kinetics and thermodynamic models. Subsequently, normal breast cells (MCF-10A) were cultured for a 28-day period on the resulting 3D porous scaffolds in an effort to study the possible regrowth of normal breast tissue, following drug release. The effects of localized cancer drug release on breast cancer cells and normal breast cell proliferation are demonstrated for scenarios that are relevant to palliative breast tumor surgery for 16 weeks under in vivo conditions. Results from the in vitro drug release show a sustained anomalous (non-Fickian) drug release that best fits the Korsmeyer-Peppas (KP) kinetic model with a non-spontaneous thermodynamic process that leads to a massive decrease in breast cancer cell (MDA-MB-231) viability. Our findings from the animal suggest that localized drug release from drug-based 3D resorbable porous scaffolds can be used to eliminate/treat local recurred triple negative breast tumors and promote normal breast tissue regeneration after surgical resection.
Collapse
|
48
|
Siepmann J, Siepmann F. Sink conditions do not guarantee the absence of saturation effects. Int J Pharm 2020; 577:119009. [DOI: 10.1016/j.ijpharm.2019.119009] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 12/26/2019] [Accepted: 12/29/2019] [Indexed: 11/26/2022]
|
49
|
Evaluation of Acetaminophen Release from Biodegradable Poly (Vinyl Alcohol) (PVA) and Nanocellulose Films Using a Multiphase Release Mechanism. NANOMATERIALS 2020; 10:nano10020301. [PMID: 32050630 PMCID: PMC7075188 DOI: 10.3390/nano10020301] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 01/24/2020] [Accepted: 01/28/2020] [Indexed: 11/17/2022]
Abstract
Biodegradable polymers hold great therapeutic value, especially through the addition of additives for controlled drug release. Nanocellulose has shown promise in drug delivery, yet usually requires chemical crosslinking with harsh acids and solvents. Nanocellulose fibrils (NFCs) and 2,2,6,6-tetramethylpiperidine-N-oxyl (TEMPO)-mediated oxidized nanocellulose fibrils (TNFCs) with poly (vinyl alcohol) (PVA) could be aqueously formulated to control the release of model drug acetaminophen over 144 hours. The release was evaluated with a multiphase release mechanism to determine which mechanism(s) contribute to the overall release and to what degree. Doing so indicated that the TNFCs in PVA control the release of acetaminophen more than NFCs in PVA. Modeling showed that this release was mostly due to burst release-drug coming off the immediate surface, rather than diffusing out of the matrix.
Collapse
|
50
|
Abel AK, Dreger NZ, Nettleton K, Gustafson TP, Forster SP, Becker ML. Amino Acid-Based Poly(ester urea)s as a Matrix for Extended Release of Entecavir. Biomacromolecules 2020; 21:946-954. [DOI: 10.1021/acs.biomac.9b01586] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alexandra K. Abel
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
| | - Nathan Z. Dreger
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
| | - Karissa Nettleton
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
| | - Tiffany P. Gustafson
- Department of Pharmaceutical Sciences, Merck & Co., Inc., 90 E. Scott Ave., Rahway, New Jersey 07065, United States
| | - Seth P. Forster
- Department of Pharmaceutical Sciences, Merck & Co., Inc., 90 E. Scott Ave., Rahway, New Jersey 07065, United States
| | - Matthew L. Becker
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
- Department of Mechanical Engineering and Material Science, Duke University, Durham, North Carolina 27708, United States
- Orthopaedic Surgery, Duke University, Durham, North Carolina 27708, United States
| |
Collapse
|