1
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Kalosakas G. Drug polymer conjugates: Average release time from thin films. Int J Pharm 2024; 662:124506. [PMID: 39053679 DOI: 10.1016/j.ijpharm.2024.124506] [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: 06/26/2024] [Revised: 07/19/2024] [Accepted: 07/21/2024] [Indexed: 07/27/2024]
Abstract
The reaction-diffusion problem describing the release of drugs conjugated through labile bonds to polymeric thin films has a known analytical solution, when the reaction kinetics is of first order. Using this solution, an exact formula is derived for the average release time of the system. This simple expression provides the characteristic time of release tav as the sum of the corresponding average diffusion time plus the inverse reaction rate constant: tav=(1/12)⋅(L2/D)+(1/k), where L is the slab thickness, D the diffusion coefficient, and k the reaction rate constant. The former term dominates in a diffusion-controlled release, while the latter one in a reaction-controlled delivery. The crossover regime is exactly described by their sum. The obtained result for the average release time is verified by direct numerical integration through the drug release profiles of the analytical solution. The value of fractional drug release at the characteristic average time is between 60-64%. These results can be used for the design of polymer-drug conjugates with a desired delivery time scale, as well as for the experimental determination of the values of microscopic parameters D and k in a conjugated system of interest.
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Affiliation(s)
- George Kalosakas
- Department of Materials Science, University of Patras, GR-26504 Rio, Greece.
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2
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Doggwiler V, Lanz M, Lipps G, Imanidis G. Mechanistic Investigation of Enzyme Triggered Release from a Xyloglucan Matrix Tablet for Controlled Colonic Drug Delivery. J Pharm Sci 2024:S0022-3549(24)00194-1. [PMID: 38796155 DOI: 10.1016/j.xphs.2024.05.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 05/16/2024] [Accepted: 05/16/2024] [Indexed: 05/28/2024]
Abstract
The objective of this study was to investigate the mechanisms underlying drug release from a controlled colonic release (CCR) tablet formulation based on a xyloglucan polysaccharide matrix and identify the factors that control the rate of release for the purpose of fundamentally substantiating the concept and demonstrating its robustness for colonic drug delivery. Previous work demonstrated in vitro limited release of 5-aminosalicylic acid (5-ASA) and caffeine from these tablets in small intestinal environment and significant acceleration of release by xyloglucanase, an enzyme of the colonic microbiome. Targeted colonic drug delivery was verified in an animal study in vivo. In the present work, interaction of the xyloglucan matrix tablets with aqueous dissolution media containing xyloglucanase was found to lead to the spontaneous formation of a hydrated highly viscous gummy layer at the surface of the matrix which had a reduced drug content compared to the underlying regions and persisted with a nearly constant thickness that was inversely correlated to the enzyme concentration throughout the duration of the release process. Enzymatic hydrolysis of xyloglucan was determined to take place at the surface of the matrix leading to matrix erosion and a relation for the rate of enzymatic reaction as a function of bulk enzyme concentration and the concentration of dissolved xyloglucan in the gummy layer was derived. A mathematical model was developed encompassing aqueous medium ingress, matrix metamorphosis due to xyloglucan dissolution and matrix swelling, enzymatic hydrolysis of the polysaccharide and concomitant drug release due to matrix erosion and simultaneous drug diffusion. The model was fitted to data of reducing sugar equivalents in the medium reflecting matrix erosion and released drug amount. Enzymatic reaction parameters and reasonable values of medium ingress velocity, xyloglucan dissolution rate constant and drug diffusion coefficient were deduced that provided an adequate approximation of the data. Erosion was shown to be the overwhelmingly dominant drug release mechanism while the role of diffusion marginally increased at low enzyme concentration and high drug solubility. Changing enzyme concentration had a rather weak effect on matrix erosion and drug release rate as demonstrated by model simulations supported by experimental data, while xyloglucan dissolution was slow and had a stronger effect on the rate of the process. Therefore, reproducible colonic drug delivery not critically influenced by inter- and intra-individual variation of microbial enzyme activity may be projected.
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Affiliation(s)
- Viviane Doggwiler
- School of Life Sciences, University of Applied Sciences Northwest Switzerland, Hofackerstrasse 30, 4132 Muttenz, Switzerland; Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Michael Lanz
- School of Life Sciences, University of Applied Sciences Northwest Switzerland, Hofackerstrasse 30, 4132 Muttenz, Switzerland
| | - Georg Lipps
- School of Life Sciences, University of Applied Sciences Northwest Switzerland, Hofackerstrasse 30, 4132 Muttenz, Switzerland
| | - Georgios Imanidis
- School of Life Sciences, University of Applied Sciences Northwest Switzerland, Hofackerstrasse 30, 4132 Muttenz, Switzerland; Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland.
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3
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Chacin Ruiz EA, Swindle-Reilly KE, Ford Versypt AN. Experimental and mathematical approaches for drug delivery for the treatment of wet age-related macular degeneration. J Control Release 2023; 363:464-483. [PMID: 37774953 PMCID: PMC10842193 DOI: 10.1016/j.jconrel.2023.09.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 09/11/2023] [Accepted: 09/13/2023] [Indexed: 10/01/2023]
Abstract
Several chronic eye diseases affect the posterior segment of the eye. Among them age-related macular degeneration can cause vision loss if left untreated and is one of the leading causes of visual impairment in the world. Most treatments are based on intravitreally injected therapeutics that inhibit the action of vascular endothelial growth factor. However, due to the need for monthly injections, this method is associated with poor patient compliance. To address this problem, numerous drug delivery systems (DDSs) have been developed. This review covers a selection of particulate systems, non-stimuli responsive hydrogels, implants, and composite systems that have been developed in the last few decades. Depending on the type of DDS, polymer material, and preparation method, different mechanical properties and drug release profiles can be achieved. Furthermore, DDS development can be optimized by implementing mathematical modeling of both drug release and pharmacokinetic aspects. Several existing mathematical models for diffusion-controlled, swelling-controlled, and erosion-controlled drug delivery from polymeric systems are summarized. Compartmental and physiologically based models for ocular drug transport and pharmacokinetics that have studied drug concentration profiles after intravitreal delivery or release from a DDS are also reviewed. The coupling of drug release models with ocular pharmacokinetic models can lead to obtaining much more efficient DDSs for the treatment of age-related macular degeneration and other diseases of the posterior segment of the eye.
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Affiliation(s)
- Eduardo A Chacin Ruiz
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, USA
| | - Katelyn E Swindle-Reilly
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, USA; Department of Biomedical Engineering, The Ohio State University, Columbus, OH, USA; Department of Ophthalmology and Visual Sciences, The Ohio State University, Columbus, OH, USA
| | - Ashlee N Ford Versypt
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, USA; Department of Biomedical Engineering, University at Buffalo, The State University of New York, Buffalo, NY, USA; Institute for Artificial Intelligence and Data Science, University at Buffalo, The State University of New York, Buffalo, NY, USA.
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4
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Mohseni-Motlagh SF, Dolatabadi R, Baniassadi M, Karimpour M, Baghani M. Tablet Geometry Effect on the Drug Release Profile from a Hydrogel-Based Drug Delivery System. Pharmaceutics 2023; 15:1917. [PMID: 37514103 PMCID: PMC10384981 DOI: 10.3390/pharmaceutics15071917] [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: 06/12/2023] [Revised: 07/02/2023] [Accepted: 07/05/2023] [Indexed: 07/30/2023] Open
Abstract
In order to achieve the optimal level of effectiveness and safety of drugs, it is necessary to control the drug release rate. Therefore, it is important to discover the factors affecting release profile from a drug delivery system. Geometry is one of these effective factors for a tablet-shaped drug delivery system. In this study, an attempt has been made to answer a general question of how the geometry of a tablet can affect the drug release profile. For this purpose, the drug release process of theophylline from two hundred HPMC-based tablets, which are categorized into eight groups of common geometries in the production of oral tablets, was simulated using finite element analysis. The analysis of the results of these simulations was carried out using statistical methods including partial least squares regression and ANOVA tests. The results showed that it is possible to predict the drug release profile by knowing the geometry type and dimensions of a tablet without performing numerous dissolution tests. Another result was that, although in many previous studies the difference in the drug release profile from several tablets with different geometries was interpreted only by variables related to the surface, the results showed that regardless of the type of geometry and its dimensions, it is not possible to have an accurate prediction of the drug release profile. Also, the results showed that without any change in the dose of the drug and the ingredients of the tablet and only because of the difference in geometry type, the tablets significantly differ in release profile. This occurred in such a way that, for example, the release time of the entire drug mass from two tablets with the same mass and materials but different geometries can be different by about seven times.
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Affiliation(s)
| | - Roshanak Dolatabadi
- Department of Drug and Food Control, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran 1416634793, Iran
- Food and Drug Administration, Iran Ministry of Health and Medical Education, Tehran 1419943471, Iran
| | - Majid Baniassadi
- School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran 1439957131, Iran
| | - Morad Karimpour
- School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran 1439957131, Iran
| | - Mostafa Baghani
- School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran 1439957131, Iran
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5
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Diffusion kinetics of vitamin B6 from phase-separated gelatin and agarose gels using blending law modelling. Food Hydrocoll 2023. [DOI: 10.1016/j.foodhyd.2023.108519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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6
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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.
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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.
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7
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Owh C, Ow V, Lin Q, Wong JHM, Ho D, Loh XJ, Xue K. Bottom-up design of hydrogels for programmable drug release. BIOMATERIALS ADVANCES 2022; 141:213100. [PMID: 36096077 DOI: 10.1016/j.bioadv.2022.213100] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 08/22/2022] [Accepted: 08/27/2022] [Indexed: 06/15/2023]
Abstract
Hydrogels are a promising drug delivery system for biomedical applications due to their biocompatibility and similarity to native tissue. Programming the release rate from hydrogels is critical to ensure release of desired dosage over specified durations, particularly with the advent of more complicated medical regimens such as combinatorial drug therapy. While it is known how hydrogel structure affects release, the parameters that can be explicitly controlled to modulate release ab initio could be useful for hydrogel design. In this review, we first survey common physical models of hydrogel release. We then extensively go through the various input parameters that we can exercise direct control over, at the levels of synthesis, formulation, fabrication and environment. We also illustrate some examples where hydrogels can be programmed with the input parameters for temporally and spatially defined release. Finally, we discuss the exciting potential and challenges for programming release, and potential implications with the advent of machine learning.
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Affiliation(s)
- Cally Owh
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, #08-03 Innovis, Singapore 138634, Singapore; NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore (NUS), 21 Lower Kent Ridge Rd, Singapore 119077, Singapore
| | - Valerie Ow
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, #08-03 Innovis, Singapore 138634, Singapore
| | - Qianyu Lin
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, #08-03 Innovis, Singapore 138634, Singapore; NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore (NUS), 21 Lower Kent Ridge Rd, Singapore 119077, Singapore
| | - Joey Hui Min Wong
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, #08-03 Innovis, Singapore 138634, Singapore
| | - Dean Ho
- Department of Biomedical Engineering, National University of Singapore, 4 Engineering Drive 3, Engineering Block 4, Singapore 117583, Singapore
| | - Xian Jun Loh
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, #08-03 Innovis, Singapore 138634, Singapore; Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117575, Singapore; School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, #01-30 General Office, Block N4.1, Singapore 639798, Singapore.
| | - Kun Xue
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, #08-03 Innovis, Singapore 138634, Singapore.
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8
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Li L, Zhu X, Yang H, Liang B, Yuan L, Hu Y, Chen F, Han X. Phase-Field Model for Drug Release of Water-Swellable Filaments for Fused Filament Fabrication. Mol Pharm 2022; 19:2854-2867. [PMID: 35801946 DOI: 10.1021/acs.molpharmaceut.2c00217] [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: 11/29/2022]
Abstract
This paper treats the drug release process as a phase-field problem and a phase-field model capable of simulating the dynamics of multiple moving fronts, transient drug fluxes, and fractional drug release from swellable polymeric systems is proposed and validated experimentally. The model can not only capture accurately the positions and movements of the distinct fronts without tracking the locations of fronts explicitly but also predict well the release profile to the completion of the release process. The parametric study has shown that parameters including water diffusion coefficient, drug saturation solubility, drug diffusion coefficient, initial drug loading ratio, and initial porosity are critical in regulating the drug release kinetics. It has been also demonstrated that the model can be applied to the study of swellable filaments and has wide applicability for different materials. Due to explicit boundary position tracking being eliminated, the model paves the way for practical use and can be extended for dealing with geometrically complex drug delivery systems. It is a useful tool to guide the design of new controlled delivery systems fabricated by fused filament fabrication.
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Affiliation(s)
- Ling Li
- National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, No. 2 Lushan South Road, Changsha 410082, China.,State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, No. 2 Lushan South Road, Changsha 410082, China
| | - Xiaolong Zhu
- National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, No. 2 Lushan South Road, Changsha 410082, China.,State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, No. 2 Lushan South Road, Changsha 410082, China
| | - Huaiyu Yang
- Department of Chemical Engineering, Loughborough University, Loughborough LE11 3TU, Leicestershire, U.K
| | - Bangchao Liang
- National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, No. 2 Lushan South Road, Changsha 410082, China.,State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, No. 2 Lushan South Road, Changsha 410082, China
| | - Lei Yuan
- National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, No. 2 Lushan South Road, Changsha 410082, China.,State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, No. 2 Lushan South Road, Changsha 410082, China
| | - Yueqiang Hu
- National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, No. 2 Lushan South Road, Changsha 410082, China
| | - Feng Chen
- National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, No. 2 Lushan South Road, Changsha 410082, China
| | - Xiaoxiao Han
- National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, No. 2 Lushan South Road, Changsha 410082, China.,State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, No. 2 Lushan South Road, Changsha 410082, China
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9
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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.
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10
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Nagaraja K, Rao KM, Hemalatha D, Zo S, Han SS, Rao KK. Strychnos Potatorum L. Seed Polysaccharide-Based Stimuli-Responsive Hydrogels and Their Silver Nanocomposites for the Controlled Release of Chemotherapeutics and Antimicrobial Applications. ACS OMEGA 2022; 7:12856-12869. [PMID: 35474817 PMCID: PMC9026062 DOI: 10.1021/acsomega.2c00131] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 03/17/2022] [Indexed: 05/31/2023]
Abstract
Natural Strychnos potatorum L. (SPL) polysaccharide-based dual-responsive semi-IPN-type (SPL-DMA) hydrogels have been fabricated using dimethylaminoethyl methacrylate by simple free radical polymerization. Furthermore, a facial and eco-friendly method has been developed for the green synthesis of silver nanoparticles on SPL-DMA hydrogel templates (SPL-DMA-Ag) using an aqueous leaf extract of Carissa spinarum (as a bioreducing agent). SPL-DMA and SPL-DMA-Ag were characterized using Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), thermogravimetry analysis (TGA), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), transmission electron microscopy (TEM), dynamic light scattering (DLS), and evaluated network parameters. 5-Fluorouracil and doxorubicin were successfully encapsulated, and in vitro drug release studies were performed at pH values of 1.2 and 7.4 and at 25 and 37 °C. To understand the drug release mechanism of SPL-DMA hydrogels, various kinetic parameters were calculated. Biocompatibility and anticancer activities of SPL-DMA hydrogels were proved by an antioxidant activity study and in vitro cell viability studies against HeLa and 3T3-L1 cell lines. SPL-DMA-Ag hydrogels were used for antibacterial application.
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Affiliation(s)
- Kasula Nagaraja
- Polymer
Biomaterial Design and Synthesis Laboratory, Department of Chemistry, Yogi Vemana University, Kadapa, Andhra Pradesh 516005, India
| | - Kummara Madhusudana Rao
- School
of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, South of Korea
| | - Duddekunta Hemalatha
- Polymer
Biomaterial Design and Synthesis Laboratory, Department of Chemistry, Yogi Vemana University, Kadapa, Andhra Pradesh 516005, India
| | - Sunmi Zo
- School
of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, South of Korea
- Research
Institute of Cell Culture, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, South Korea
| | - Sung Soo Han
- School
of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, South of Korea
- Research
Institute of Cell Culture, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, South Korea
| | - K.S.V. Krishna Rao
- Polymer
Biomaterial Design and Synthesis Laboratory, Department of Chemistry, Yogi Vemana University, Kadapa, Andhra Pradesh 516005, India
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11
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Wang W, Ye Z, Gao H, Ouyang D. Computational pharmaceutics - A new paradigm of drug delivery. J Control Release 2021; 338:119-136. [PMID: 34418520 DOI: 10.1016/j.jconrel.2021.08.030] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 08/17/2021] [Accepted: 08/17/2021] [Indexed: 01/18/2023]
Abstract
In recent decades pharmaceutics and drug delivery have become increasingly critical in the pharmaceutical industry due to longer time, higher cost, and less productivity of new molecular entities (NMEs). However, current formulation development still relies on traditional trial-and-error experiments, which are time-consuming, costly, and unpredictable. With the exponential growth of computing capability and algorithms, in recent ten years, a new discipline named "computational pharmaceutics" integrates with big data, artificial intelligence, and multi-scale modeling techniques into pharmaceutics, which offered great potential to shift the paradigm of drug delivery. Computational pharmaceutics can provide multi-scale lenses to pharmaceutical scientists, revealing physical, chemical, mathematical, and data-driven details ranging across pre-formulation studies, formulation screening, in vivo prediction in the human body, and precision medicine in the clinic. The present paper provides a comprehensive and detailed review in all areas of computational pharmaceutics and "Pharma 4.0", including artificial intelligence and machine learning algorithms, molecular modeling, mathematical modeling, process simulation, and physiologically based pharmacokinetic (PBPK) modeling. We not only summarized the theories and progress of these technologies but also discussed the regulatory requirements, current challenges, and future perspectives in the area, such as talent training and a culture change in the future pharmaceutical industry.
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Affiliation(s)
- Wei Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences (ICMS), University of Macau, Macau, China
| | - Zhuyifan Ye
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences (ICMS), University of Macau, Macau, China
| | - Hanlu Gao
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences (ICMS), University of Macau, Macau, China
| | - Defang Ouyang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences (ICMS), University of Macau, Macau, China.
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12
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Windolf H, Chamberlain R, Quodbach J. Predicting Drug Release from 3D Printed Oral Medicines Based on the Surface Area to Volume Ratio of Tablet Geometry. Pharmaceutics 2021; 13:1453. [PMID: 34575529 PMCID: PMC8471793 DOI: 10.3390/pharmaceutics13091453] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 09/01/2021] [Accepted: 09/07/2021] [Indexed: 12/13/2022] Open
Abstract
3D printing offers the advantage of being able to modify dosage form geometry, which can be exploited to modify release characteristics. In this study, we investigated the influence of the surface area to volume ratio (SA/V) to change and predict release profiles of 3D printed dosage forms. Geometries with varying SA/V and dosages were designed and printed, and drug dissolution was investigated. Three drug substances were used: pramipexole, levodopa (both BCS I) and praziquantel (BCS II). Two polymers were chosen as matrix formers: polyvinyl alcohol (water-soluble) and ethylene vinyl acetate (inert). Drug release was characterized using the mean dissolution time (MDT) and established equations that describe complete dissolution curves were applied. Predictions were validated with previously un-printed dosage forms. Based on an identified MDT-SA/V correlation, the MDT can be predicted with a deviation of ≤5 min for a given SA/V. Using correlations of fit parameters and SA/V, RMSEP values of 0.6-2.8% and 1.6-3.4% were obtained for the BCS I formulations and RMSEP values of 1.0-3.8% were obtained for the BCS II formulation, indicating accurate prediction over a wide range of dissolution profiles. With this approach, MDT and release profiles of dosage forms with a given SA/V can be precisely predicted without performing dissolution tests and vice versa, the required SA/V can be predicted for a desired release profile.
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Affiliation(s)
| | | | - Julian Quodbach
- Institute of Pharmaceutics and Biopharmaceutics, Heinrich Heine University, Universitätsstr. 1, 40225 Düsseldorf, Germany; (H.W.); (R.C.)
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13
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A study of Kollicoat® MAE100P film's structure and properties. Int J Pharm 2021; 606:120622. [PMID: 33932539 DOI: 10.1016/j.ijpharm.2021.120622] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 04/07/2021] [Accepted: 04/16/2021] [Indexed: 11/22/2022]
Abstract
Generally, an organic-solvent-based film is denser and tougher than a corresponding aqueous-dispersion-based film. However, Kollicoat® MAE100P films prepared from aqueous dispersions had greater tensile strengths compared to the films cast from organic solutions. It was proposed that MAE100P polymer particles in aqueous media had a core-shell structure with a hydrophilic shell and a hydrophobic core. The hydrophilic shell was rich in ionized methacrylic acid (MAA) groups and the hydrophobic core primarily contained unionized MAA and ethyl acrylate (EA). As a result, ionized MAA formed a continuous phase which worked as a rigid frame and greatly improved the mechanical properties of aqueous-dispersion-based films. In order to prove this theory and investigate the effect of ionization level on this polymer system, the properties of pH, turbidity, zeta potential, and particle size of MAE100P dispersions were measured as a function of ionization level. The tensile strengths and thermal and mechanical properties of MAE100P films prepared from organic solution or aqueous dispersions of different ionization levels were investigated as well. FTIR was used to characterize the polymer films. Drug release in 0.1 N HCl from coated pellets was studied using the basket method. The experimental results showed that the original MAE100P polymer particles (if not specified, the ionization level is 6%) had a highly-charged surface. The properties of polymer aqueous dispersions were significantly changed by the ionization levels. Aqueous-dispersion-based MAE100P films or coats were stronger and comparable to or somewhat more effective in inhibiting drug diffusion than were organic-solvent-based coats. The tensile strength initially increased and then decreased with an increase of ionization level, while the water-uptake rate by the films continuously increased. Two endothermic peaks were observed in the DSC thermograms for cured MAE100P films. The high-Tg endothermic peak increased with an increase in ionization level, while the low-Tg peak didn't exhibit significant change except for the 18% ionization film. In the dynamic mechanical analysis, two relaxations in the storage modulus were observed in the aqueous-dispersion-based films. These data may suggest a two-phase structure in the form of a core-shell structure. The tensile-strength ratio for aqueous-dispersion-based films over organic-solvent-based films for MAE100P was close to that reported for films formed from polymer substances/particles with core-shell structures. In summary, the core-shell structure might result in a two-phase structure in the bulk MAE100P film prepared from aqueous dispersion. This special structure led to significantly-improved mechanical properties for aqueous-dispersion-based MAE100 films. The ionization levels had complicated effects on the polymer system by increasing the amount of ionic aggregates while also solubilizing the polymer and changing the mechanism of film formation.
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Benzine Y, Siepmann F, Neut C, Danede F, Francois Willart J, Siepmann J, Karrout Y. Injection-molded capsule bodies and caps based on polymer blends for controlled drug delivery. Eur J Pharm Biopharm 2021; 168:1-14. [PMID: 34438018 DOI: 10.1016/j.ejpb.2021.08.007] [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: 06/23/2021] [Revised: 07/19/2021] [Accepted: 08/19/2021] [Indexed: 11/16/2022]
Abstract
A variety of polymer:polymer blends was used to prepare hot melt extrudates and empty capsules (bodies and caps) by injection-molding using a benchtop extruder (Babyplast). KollidonSR:inulin and Carbothane:inulin blends were investigated. The impact of the blend ratio on the water uptake and dry mass loss kinetics upon exposure to 0.1 MHCl, phosphate buffer pH6.8 and culture medium optionally inoculated with fecal samples from Inflammatory Bowel Disease (IBD) patients were studied. Hot melt extrudates were loaded with up to 60% theophylline, capsules were filled with drug powder. Increasing the inulin content led to increased water uptake and dry mass loss rates, resulting in accelerated drug release from the dosage forms, irrespective of the type of polymer blend. This can be attributed to the higher hydrophilicity/water-solubility of this polymer compared to KollidonSR and Carbothane. Interestingly, the presence of fecal samples in culture medium increased the water uptake and dry mass loss of hot melt extrudates to a certain extent, suggesting partial system degradation by bacterial enzymes. However, these phenomena did not translate into any noteworthy impact of the presence of colonic bacteria on theophylline release from the investigated extrudates or capsules. Hence, drug release can be expected to be independent of the location "small intestine vs. colon" from these dosage forms, which can be advantageous for long term release throughout the entire gastro intestinal tract.
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Affiliation(s)
- Youcef Benzine
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | | | - Christel Neut
- Univ. Lille, Inserm, CHU Lille, U1286-INFINITE Institute for Translational Research in Inflammation, F-59000 Lille, France
| | - Florence Danede
- Univ. Lille, USTL UMET UMR CNRS 8207, F-59650 Villeneuve d'Ascq, France
| | | | | | - Youness Karrout
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France.
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15
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Meneguin A, Pacheco G, Silva J, de Araujo FP, Silva-Filho EC, Bertolino LC, da Silva Barud H. Nanocellulose/palygorskite biocomposite membranes for controlled release of metronidazole. Int J Biol Macromol 2021; 188:689-695. [PMID: 34371050 DOI: 10.1016/j.ijbiomac.2021.08.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 07/15/2021] [Accepted: 08/02/2021] [Indexed: 10/20/2022]
Abstract
The incorporation of drugs in nanocomposites can be considered a potential strategy for controlled drug release. In this study, a nanocomposite based on bacterial cellulose and the palygorskite clay (BC/PLG) was produced and loaded with metronidazole (MTZ). The samples were characterized using X-ray diffraction (XRD) Spectroscopy, thermal analysis (TG/DTG) and Scanning Electron Microscopy (SEM). The barrier properties were determined to water vapor permeability (WVP). Adsorption tests with PLG were performed using MTZ and drug release profile of the membranes was investigated. The results indicated that PLG increased the crystallinity of the nanocomposites, and greater thermal stability when PLG concentration was 15.0% (BC/PLG15) was observed. WVP of the samples also varied, according to the clay content. Adsorption equilibrium was achieved from 400 mg/L of the PLG and a plateau in the MTZ release rates from BC/PLG was observed after 30 min. Therefore, the results of this study show the potential of these nanocomposite membranes as a platform for controlled drug release.
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Affiliation(s)
- Andréia Meneguin
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Department of Drugs and Medicines, Rodovia Araraquara-Jaú, km 1, - Campus Ville, Araraquara, São Paulo 14800-903, Brazil
| | - Guilherme Pacheco
- Research Center on Biotechnology, Uniara, Araraquara, 14801-340, São Paulo, Brazil
| | - Jhonatan Silva
- Research Center on Biotechnology, Uniara, Araraquara, 14801-340, São Paulo, Brazil
| | - Francisca Pereira de Araujo
- LIMAV, Interdisciplinary Laboratory for Advanced Materials, Federal University of Piaui, Campus Universitário Ministro Petrônio Portella, Teresina, 64049-550, Piaui, Brazil
| | - Edson Cavalcanti Silva-Filho
- LIMAV, Interdisciplinary Laboratory for Advanced Materials, Federal University of Piaui, Campus Universitário Ministro Petrônio Portella, Teresina, 64049-550, Piaui, Brazil
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16
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Somayaji MR, Das D, Garimella HT, German CL, Przekwas AJ, Simon L. An Integrated Biophysical Model for Predicting the Clinical Pharmacokinetics of Transdermally Delivered Compounds. Eur J Pharm Sci 2021; 167:105924. [PMID: 34289340 DOI: 10.1016/j.ejps.2021.105924] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 06/01/2021] [Accepted: 06/30/2021] [Indexed: 11/19/2022]
Abstract
The delivery of therapeutic drugs through the skin is a promising alternative to oral or parenteral delivery routes because dermal drug delivery systems (D3S) offer unique advantages such as controlled drug release over sustained periods and a significant reduction in first-pass effects, thus reducing the required dosing frequency and level of patient noncompliance. Furthermore, D3S find applications in multiple therapeutic areas, including drug repurposing. This article presents an integrated biophysical model of dermal absorption for simulating the permeation and absorption of compounds delivered transdermally. The biophysical model is physiologically/biologically inspired and combines a holistic model of healthy skin with whole-body physiology-based pharmacokinetics through dermis microcirculation. The model also includes the effects of chemical penetration enhancers and hair follicles on transdermal transport. The model-predicted permeation and pharmacokinetics of select compounds were validated using in vivo data reported in the literature. We conjecture that the integrated model can be used to gather insights into the permeation and systemic absorption of transdermal formulations (including cosmetic products) released from novel depots and optimize delivery systems. Furthermore, the model can be adapted to diseased skin with parametrization and structural adjustments specific to skin diseases.
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Affiliation(s)
- Mahadevabharath R Somayaji
- Manager, Computational Medicine and Biology, CFD Research Corporation, Huntsville, AL 35806, United States.
| | - Debarun Das
- Manager, Computational Medicine and Biology, CFD Research Corporation, Huntsville, AL 35806, United States
| | - Harsha Teja Garimella
- Manager, Computational Medicine and Biology, CFD Research Corporation, Huntsville, AL 35806, United States
| | - Carrie L German
- Manager, Computational Medicine and Biology, CFD Research Corporation, Huntsville, AL 35806, United States
| | - Andrzej J Przekwas
- Manager, Computational Medicine and Biology, CFD Research Corporation, Huntsville, AL 35806, United States
| | - Laurent Simon
- Otto H. York Department of Chemical and Materials Engineering, New Jersey Institute of Technology, Newark, NJ 07102, United States
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17
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Borandeh S, van Bochove B, Teotia A, Seppälä J. Polymeric drug delivery systems by additive manufacturing. Adv Drug Deliv Rev 2021; 173:349-373. [PMID: 33831477 DOI: 10.1016/j.addr.2021.03.022] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 01/20/2021] [Accepted: 03/31/2021] [Indexed: 12/29/2022]
Abstract
Additive manufacturing (AM) is gaining interests in drug delivery applications, offering innovative opportunities for the design and development of systems with complex geometry and programmed controlled release profile. In addition, polymer-based drug delivery systems can improve drug safety, efficacy, patient compliance, and are the key materials in AM. Therefore, combining AM and polymers can be beneficial to overcome the existing limitations in the development of controlled release drug delivery systems. Considering these advantages, here we are focusing on the recent developments in the field of polymeric drug delivery systems prepared by AM. This review provides a comprehensive overview on a holistic polymer-AM perspective for drug delivery systems with discussion on the materials, properties, design and fabrication techniques and the mechanisms used to achieve a controlled release system. The current challenges and future perspectives for personalized medicine and clinical use of these systems are also briefly discussed.
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Affiliation(s)
- Sedigheh Borandeh
- Polymer Technology, School of Chemical Engineering, Aalto University, Espoo 02150, Finland
| | - Bas van Bochove
- Polymer Technology, School of Chemical Engineering, Aalto University, Espoo 02150, Finland
| | - Arun Teotia
- Polymer Technology, School of Chemical Engineering, Aalto University, Espoo 02150, Finland
| | - Jukka Seppälä
- Polymer Technology, School of Chemical Engineering, Aalto University, Espoo 02150, Finland.
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18
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Abstract
Hydrogels are 3D crosslinked polymer matrices having a colossal tendency to imbibe water and exhibit swelling under physiological conditions without deformation in their hydrophilic network. Hydrogels being biodegradable and biocompatible, gained consideration due to some unique characteristics: responsiveness to external stimuli (pH, temperature) and swelling in aqueous solutions. Hydrogels offer a promising option for various pharmaceutical and biomedical applications, including tissue-specific drug delivery at a predetermined, controlled rate. This article presents a brief review of the recent and fundamental advances to design hydrogels, the swelling and deswelling mechanism, various crosslinking methods and their use as an intelligent carrier in the pharmaceutical field. Recent applications of hydrogels are also briefly discussed and exemplified.
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19
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Exploring tablet design options for tailoring drug release and dose via fused deposition modeling (FDM) 3D printing. Int J Pharm 2020; 591:119987. [DOI: 10.1016/j.ijpharm.2020.119987] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 09/25/2020] [Accepted: 10/11/2020] [Indexed: 01/22/2023]
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20
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Pretorius D, Kahn-Krell AM, LaBarge WC, Lou X, Kannappan R, Pollard AE, Fast VG, Berry JL, Eberhardt AW, Zhang J. Fabrication and characterization of a thick, viable bi-layered stem cell-derived surrogate for future myocardial tissue regeneration. Biomed Mater 2020; 16. [PMID: 33053512 DOI: 10.1088/1748-605x/abc107] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 10/14/2020] [Indexed: 02/07/2023]
Abstract
Cardiac tissue surrogates show promise for restoring mechanical and electrical function in infarcted left ventricular (LV) myocardium. For these cardiac surrogates to be useful in vivo, they are required to support synchronous and forceful contraction over the infarcted region. These design requirements necessitate a thickness sufficient to produce a useful contractile force, an area large enough to cover an infarcted region, and prevascularization to overcome diffusion limitations. Attempts to meet these requirements have been hampered by diffusion limits of oxygen and nutrients (100-200 μm) leading to necrotic regions.This study demonstrates a novel layer-by-layer (LbL) fabrication method used to produce tissue surrogates that meet these requirements and mimic normal myocardium in form and function. Thick (1.5-2 mm) LbL cardiac tissues created from human induced pluripotent stem cell-derived cardiomyocytes and endothelial cells were assessed, in vitro, over a four week period for viability (< 5.6 ± 1.4 % nectrotic cells), cell morphology, viscoelastic properties and functionality. Viscoelastic properties of the cardiac surrogates were determined via stress relaxation response modeling and compared to native murine LV tissue. Viscoelastic characterization showed that the generalized Maxwell model of order 4 described the samples well (0.7 < R2 < 0.98). Functional performance assessment showed enhanced t-tubule network development, gap junction communication as well as conduction velocity (16.9 ± 2.3 cm s-1). These results demonstrate that LbL fabrication can be utilized successfully in creating complex, functional cardiac surrogates for therapeutic applications.
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Affiliation(s)
- Danielle Pretorius
- Biomedical Engineering, The University of Alabama at Birmingham, Volker Hall Room G094, 1670 University Blvd, Birmingham, Alabama, 35294-2182, UNITED STATES
| | - Asher M Kahn-Krell
- Biomedical Engineering, The University of Alabama at Birmingham, Birmingham, Alabama, UNITED STATES
| | - Wesley C LaBarge
- Biomedical Engineering, The University of Alabama at Birmingham, Birmingham, Alabama, UNITED STATES
| | - Xi Lou
- Biomedical Engineering, The University of Alabama at Birmingham, Birmingham, Alabama, UNITED STATES
| | - Ramaswamy Kannappan
- Biomedical Engineering, The University of Alabama at Birmingham, Birmingham, Alabama, UNITED STATES
| | - Andrew E Pollard
- Biomedical Engineering, The University of Alabama at Birmingham, Birmingham, Alabama, UNITED STATES
| | - Vladimir G Fast
- Biomedical Engineering, The University of Alabama at Birmingham, Birmingham, Alabama, UNITED STATES
| | - Joel L Berry
- School of Engineering, The University of Alabama at Birmingham, Birmingham, Alabama, UNITED STATES
| | - Alan W Eberhardt
- Department of Biomedical Engineering, The University of Alabama at Birmingham, Birmingham, Alabama, UNITED STATES
| | - Jianyi Zhang
- Biomedical Engineering, The University of Alabama at Birmingham, Birmingham, Alabama, UNITED STATES
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21
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Meneguin AB, da Silva Barud H, Sábio RM, de Sousa PZ, Manieri KF, de Freitas LAP, Pacheco G, Alonso JD, Chorilli M. Spray-dried bacterial cellulose nanofibers: A new generation of pharmaceutical excipient intended for intestinal drug delivery. Carbohydr Polym 2020; 249:116838. [PMID: 32933682 DOI: 10.1016/j.carbpol.2020.116838] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 07/01/2020] [Accepted: 07/28/2020] [Indexed: 12/16/2022]
Abstract
Defibrillation of bacterial cellulose by ultra-refining was efficient to release nanofibers (BCNF) which were spray dried with the matrices formers mannitol (MN), maltodextrin or hydroxypropylmethylcellulose. The best microsystem comprised the association of BCNF and MN, so the selected microparticles were loaded with diclofenac sodium or caffeine. Depending on the proportion of BCNF, the nanofibers collapse promoted by spray drying can occur onto surface or into microparticles core, leading to different release behaviors. Samples showed pH-dependent drug release, so the microsystem developed with the lowest BCNF concentration showed important trend to gastroresistance. Caffeine was spray dried as a free drug and for this reason it was devoid of any control over release rates. The set of results showed BCNF can be considered an interesting and potential pharmaceutical excipient for lipophilic drugs. Beyond that, BCNF association with MN can lead to novel enteric drug delivery systems based on natural polymers.
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Affiliation(s)
- Andréia Bagliotti Meneguin
- School of Pharmaceutical Sciences, São Paulo State University, Araraquara, São Paulo, 14800-903, Brazil.
| | - Hernane da Silva Barud
- Laboratory of Biopolymers and Biomaterials, University of Araraquara, Araraquara, São Paulo, 14801-320, Brazil
| | - Rafael Miguel Sábio
- School of Pharmaceutical Sciences, São Paulo State University, Araraquara, São Paulo, 14800-903, Brazil
| | - Paula Zanin de Sousa
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, 14040-903, Brazil
| | - Karyn Fernanda Manieri
- School of Pharmaceutical Sciences, São Paulo State University, Araraquara, São Paulo, 14800-903, Brazil
| | | | - Guilherme Pacheco
- Laboratory of Biopolymers and Biomaterials, University of Araraquara, Araraquara, São Paulo, 14801-320, Brazil
| | - Jovan Duran Alonso
- Analytical Chemistry Department, São Paulo State University, Araraquara, São Paulo, 14801-970, Brazil
| | - Marlus Chorilli
- School of Pharmaceutical Sciences, São Paulo State University, Araraquara, São Paulo, 14800-903, Brazil
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22
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Suflet DM, Popescu I, Prisacaru AI, Pelin IM. Synthesis and characterization of curdlan – phosphorylated curdlan based hydrogels for drug release. INT J POLYM MATER PO 2020. [DOI: 10.1080/00914037.2020.1765360] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Dana Mihaela Suflet
- Laboratory of Natural Polymers, Bioactive and Biocompatible Materials, Petru Poni Institute of Macromolecular Chemistry, Iasi, Romania
| | - Irina Popescu
- Laboratory of Natural Polymers, Bioactive and Biocompatible Materials, Petru Poni Institute of Macromolecular Chemistry, Iasi, Romania
| | | | - Irina Mihaela Pelin
- Laboratory of Natural Polymers, Bioactive and Biocompatible Materials, Petru Poni Institute of Macromolecular Chemistry, Iasi, Romania
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23
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Engineering approaches for drug delivery systems production and characterization. Int J Pharm 2020; 581:119267. [DOI: 10.1016/j.ijpharm.2020.119267] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 03/22/2020] [Accepted: 03/24/2020] [Indexed: 12/17/2022]
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Okra (Hibiscus esculentus) gum based hydrophilic matrices for controlled drug delivery applications: Estimation of percolation threshold. Int J Biol Macromol 2020; 155:835-845. [PMID: 32240737 DOI: 10.1016/j.ijbiomac.2020.03.227] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 03/08/2020] [Accepted: 03/25/2020] [Indexed: 12/14/2022]
Abstract
This study aims to explore the potential of gum extracted from okra fruit (Hibiscus esculentus) in developing hydrophilic matrices for controlled drug release applications, including determination of its percolation threshold. Flurbiprofen (poorly soluble), theophylline (sparingly soluble) and metformin (freely soluble) were employed as model drugs and incorporated using direct compression into matrices containing 40% w/w of three drugs with different physicochemical properties. Atomic force microscopy was used to study the surface texture properties of developed matrices; the surfaces of the flurbiprofen-based matrices were comparatively rough most likely as a consequence of its poor compactability. Swelling studies found that the swelling rate increased as the concentration of okra gum was increased. However, for all matrices, an increase in the gum concentration resulted in decreased drug release. The estimated percolation threshold of the okra gum calculated was found in the region of ~25% v/v plus initial porosity. Knowing the percolation threshold will enable formulators to use the minimal amount of polymer for sustain release matrices thus the controlling costs and maximising the sustainable potential of okra. This study will not only assist researchers in developing effective okra gum-based extended-release matrices but also expected to contribute towards its exploration at an industrial scale.
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25
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Cui C, Sun J, Wang X, Yu Z, Shi Y. Factors Contributing to Drug Release From Enteric-Coated Omeprazole Capsules: An In Vitro and In Vivo Pharmacokinetic Study and IVIVC Evaluation in Beagle Dogs. Dose Response 2020; 18:1559325820908980. [PMID: 32180688 PMCID: PMC7057410 DOI: 10.1177/1559325820908980] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 12/29/2019] [Accepted: 01/07/2020] [Indexed: 12/19/2022] Open
Abstract
This study was performed to explore factors influencing the release of the proton pump inhibitor omeprazole from enteric-coated capsules in vitro and absorption in vivo in beagle dogs. Enteric-coated pellets with different enteric coating materials and coating levels were designed and prepared. All self-prepared formulations were characterized in vitro as well as in vivo and compared to the brand and generic commercial products. Evaluation of the corresponding release profiles suggested that coating material was the most critical factor. Enteric coating level determined the lag time before initiation of drug release, and subcoating level affected the drug release rate. Pharmacokinetic studies were performed in beagle dogs to further confirm the influence of formulation factors on drug absorption. Medium at pH 6.8 was a more biorelevant condition for in vitro drug release tests, although medium at pH 6.0 was better for discriminating release profiles of different formulations. A multiple level C in vitro/in vivo correlation was preliminarily established by which Tmax and Cmax of omeprazole formulations could be predicted with release parameters such as Tlag and T25. These results may facilitate quality evaluation and potentially improve the clinical efficacy of generic omeprazole products.
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Affiliation(s)
- Cheng Cui
- National Institutes for Food and Drug Control, Beijing, China.,Drug Clinical Trial Center, Peking University Third Hospital, Beijing, China
| | - Jiabei Sun
- National Institutes for Food and Drug Control, Beijing, China
| | - Xueqing Wang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Zhenxi Yu
- National Institutes for Food and Drug Control, Beijing, China
| | - Yaqin Shi
- National Institutes for Food and Drug Control, Beijing, China
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26
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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]
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27
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Deshmukh S, Paradkar A, Abrahmsén-Alami S, Govender R, Viridén A, Winge F, Matic H, Booth J, Kelly A. Injection moulded controlled release amorphous solid dispersions: Synchronized drug and polymer release for robust performance. Int J Pharm 2020; 575:118908. [PMID: 31809859 DOI: 10.1016/j.ijpharm.2019.118908] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 11/06/2019] [Accepted: 11/24/2019] [Indexed: 12/18/2022]
Abstract
A study has been carried out to investigate controlled release performance of caplet shaped injection moulded (IM) amorphous solid dispersion (ASD) tablets based on the model drug AZD0837 and polyethylene oxide (PEO). The physical/chemical storage stability and release robustness of the IM tablets were characterized and compared to that of conventional extended release (ER) hydrophilic matrix tablets of the same raw materials and compositions manufactured via direct compression (DC). To gain an improved understanding of the release mechanisms, the dissolution of both the polymer and the drug were studied. Under conditions where the amount of dissolution media was limited, the controlled release ASD IM tablets demonstrated complete and synchronized release of both PEO and AZD0837 whereas the release of AZD0837 was found to be slower and incomplete from conventional direct compressed ER hydrophilic matrix tablets. The results clearly indicated that AZD0837 remained amorphous throughout the dissolution process and was maintained in a supersaturated state and hence kept stable with the aid of the polymeric carrier when released in a synchronized manner. In addition, it was found that the IM tablets were robust to variation in hydrodynamics of the dissolution environment and PEO molecular weight.
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Affiliation(s)
- Shivprasad Deshmukh
- Centre for Pharmaceutical Engineering Science, University of Bradford, UK; Pharmaceutical Technology and Development, AstraZeneca, Macclesfield, UK
| | - Anant Paradkar
- Centre for Pharmaceutical Engineering Science, University of Bradford, UK
| | | | - Rydvikha Govender
- Pharmaceutical Technology and Development, AstraZeneca Gothenburg, Sweden; Chalmers University of Technology, Gothenburg, Sweden
| | - Anna Viridén
- Pharmaceutical Technology and Development, AstraZeneca Gothenburg, Sweden
| | - Fredrik Winge
- Pharmaceutical Technology and Development, AstraZeneca Gothenburg, Sweden
| | - Hanna Matic
- Pharmaceutical Technology and Development, AstraZeneca Gothenburg, Sweden
| | - Jonathan Booth
- Pharmaceutical Technology and Development, AstraZeneca, Macclesfield, UK
| | - Adrian Kelly
- Centre for Pharmaceutical Engineering Science, University of Bradford, UK.
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Hussain T, Ijaz M, Shamim R, Hussain K, Abbas N, Hussain A, Griessinger JA, Bukhari NI. In Vivo Evaluation of a Novel Chitosan-Polycaprolactone Based Mucoadhesive Gastro-Retentive Sustained Release Drug Delivery System for Milnacipran HCl. AAPS PharmSciTech 2020; 21:58. [PMID: 31912249 DOI: 10.1208/s12249-019-1606-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 12/09/2019] [Indexed: 11/30/2022] Open
Abstract
The study was aimed to develop a gastro-retentive mucoadhesive sustained release matrix formulation for milnacipran HCl (MCN) by using the design of experiment (DoE). The gastro-retentive swellable mucoadhesive matrix tablets were prepared by modified solvent-based wet granulation through mixing milnacipran (MCN), chitosan low molecular weight (CH-LM), chitosan medium molecular weight (CH-MM), and polycaprolactone (PCL). Optimization of the formulation was carried out via DoE. Formulations were characterized by DSC, FTIR, and in vitro drug release testing. In vitro mucoadhesive studies were performed on rabbit's intestinal mucosa. In vivo drug release studies were performed on dogs. Optimized matrix formulations showed no significant interaction among the polymers and MCN, confirmed by DSC and FTIR, and were characterized as swellable controlled release matrix systems. The optimized formulations MOPT3 and MOPT4 showed significantly improved adhesion time of 12 h on the gastric mucosa. Based on the in vivo analysis, the elimination half-life of MCN was increased that proved the matrix formulation to be sustained release DDS. The Tmax was extended from 2 to 12 ± 1.63 h for MOPT4. Cmax of matrix was reduced to 121.60 ± 9.496 ng/ml as compared to 149.22 ± 9.942 ng/ml of solution. The bioavailability of the matrix formulation was significantly improved as compared to the MCN solution by 272.20 ± 48.11%. The controlled drug release and strong mucoadhesive properties of the gastro-retentive matrix formulations suggested the potential application of the formulations for the extended oral delivery of MCN.
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Evaluation of Lipophilic Properties of Thermoplastic Granule in Formulation of Sustained Release Matrix in Solid Dosage Forms. Pharm Chem J 2019. [DOI: 10.1007/s11094-019-02058-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Thomas D, Nair VV, Latha MS, Thomas KK. Theoretical and experimental studies on theophylline release from hydrophilic alginate nanoparticles. FUTURE JOURNAL OF PHARMACEUTICAL SCIENCES 2019. [DOI: 10.1186/s43094-019-0002-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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31
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Qaiser R, Bashir S. Nanovesicles of sorbitan isostearate: a novel sustained-release non-ionic surfactant. BIOINSPIRED BIOMIMETIC AND NANOBIOMATERIALS 2019. [DOI: 10.1680/jbibn.18.00032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Sorbitan isostearate (Span 120) is a novel non-ionic surfactant for development of vesicular systems. The present work aimed to develop, characterise and evaluate Span 120 based niosomes for enhanced drug delivery. Span 120 niosomes were prepared by using the thin-film hydration method and naproxen sodium was used as a model drug. Fourier transform infrared spectroscopy analysis was also done for preformulation studies. Niosomes prepared with Span 120 and cholesterol (2:1) were spherical, as shown by transmission electron microscopy, with a mean size of 173 ± 2·96 nm, a polydispersity index of 0·28 ± 0·02, a zeta potential of −50 ± 1·2 mV and an entrapment efficiency of 91·92%. The in vitro release study showed a sustained release (21·9%) of naproxen sodium in 12 h. The release kinetics was uniform and followed the Korsmeyer–Peppas model, with n > 0·5. Accordingly, niosomes with a molar ratio of 2:1 was selected for in vivo anti-inflammatory activity. A carrageenan-induced paw oedema test was performed, which showed an enhanced inhibitory effect of loaded niosomes with Span 120 compared to the standard drug. In conclusion, the use of Span 120 is a promising approach to formulating niosomes with an improved and sustained effect.
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Affiliation(s)
- Rabia Qaiser
- Department of Pharmaceutics, Faculty of Pharmacy, University of Sargodha, Sargodha, Pakistan
| | - Sajid Bashir
- Department of Pharmaceutics, Faculty of Pharmacy, University of Sargodha, Sargodha, Pakistan
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Casalini T, Perale G. From Microscale to Macroscale: Nine Orders of Magnitude for a Comprehensive Modeling of Hydrogels for Controlled Drug Delivery. Gels 2019; 5:E28. [PMID: 31096685 PMCID: PMC6631542 DOI: 10.3390/gels5020028] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 04/14/2019] [Accepted: 05/06/2019] [Indexed: 12/21/2022] Open
Abstract
Because of their inherent biocompatibility and tailorable network design, hydrogels meet an increasing interest as biomaterials for the fabrication of controlled drug delivery devices. In this regard, mathematical modeling can highlight release mechanisms and governing phenomena, thus gaining a key role as complementary tool for experimental activity. Starting from the seminal contribution given by Flory-Rehner equation back in 1943 for the determination of matrix structural properties, over more than 70 years, hydrogel modeling has not only taken advantage of new theories and the increasing computational power, but also of the methods offered by computational chemistry, which provide details at the fundamental molecular level. Simulation techniques such as molecular dynamics act as a "computational microscope" and allow for obtaining a new and deeper understanding of the specific interactions between the solute and the polymer, opening new exciting possibilities for an in silico network design at the molecular scale. Moreover, system modeling constitutes an essential step within the "safety by design" paradigm that is becoming one of the new regulatory standard requirements also in the field-controlled release devices. This review aims at providing a summary of the most frequently used modeling approaches (molecular dynamics, coarse-grained models, Brownian dynamics, dissipative particle dynamics, Monte Carlo simulations, and mass conservation equations), which are here classified according to the characteristic length scale. The outcomes and the opportunities of each approach are compared and discussed with selected examples from literature.
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Affiliation(s)
- Tommaso Casalini
- Biomaterials Laboratory, Institute for Mechanical Engineering and Materials Technology, SUPSI-University of Applied Sciences and Arts of Southern Switzerland, Via Cantonale 2C, Galleria 2, 6928 Manno, Switzerland.
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1-5/10, 8093 Zurich, Switzerland.
| | - Giuseppe Perale
- Biomaterials Laboratory, Institute for Mechanical Engineering and Materials Technology, SUPSI-University of Applied Sciences and Arts of Southern Switzerland, Via Cantonale 2C, Galleria 2, 6928 Manno, Switzerland.
- Department of Surgical Sciences and Integrated Diagnostics, Orthopaedic Clinic-IRCCS Ospedale Policlinico San Martino, Faculty of Biomedical Sciences, University of Genova, Largo R. Benzi 10, 16132 Genova, Italy.
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Kelly SM, Upadhyay AK, Mitra A, Narasimhan B. Analyzing Drug Release Kinetics from Water-Soluble Polymers. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.8b05800] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sean M. Kelly
- Department of Chemical and Biological Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Arun K. Upadhyay
- The Procter and Gamble Company, Cincinnati, Ohio 45202, United States
| | - Akash Mitra
- Department of Chemical and Biological Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Balaji Narasimhan
- Department of Chemical and Biological Engineering, Iowa State University, Ames, Iowa 50011, United States
- Nanovaccine Institute, Iowa State University, Ames, Iowa 50011, United States
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Mircioiu C, Voicu V, Anuta V, Tudose A, Celia C, Paolino D, Fresta M, Sandulovici R, Mircioiu I. Mathematical Modeling of Release Kinetics from Supramolecular Drug Delivery Systems. Pharmaceutics 2019; 11:E140. [PMID: 30901930 PMCID: PMC6471682 DOI: 10.3390/pharmaceutics11030140] [Citation(s) in RCA: 225] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 03/07/2019] [Accepted: 03/18/2019] [Indexed: 12/16/2022] Open
Abstract
Embedding of active substances in supramolecular systems has as the main goal to ensure the controlled release of the active ingredients. Whatever the final architecture or entrapment mechanism, modeling of release is challenging due to the moving boundary conditions and complex initial conditions. Despite huge diversity of formulations, diffusion phenomena are involved in practically all release processes. The approach in this paper starts, therefore, from mathematical methods for solving the diffusion equation in initial and boundary conditions, which are further connected with phenomenological conditions, simplified and idealized in order to lead to problems which can be analytically solved. Consequently, the release models are classified starting from the geometry of diffusion domain, initial conditions, and conditions on frontiers. Taking into account that practically all solutions of the models use the separation of variables method and integral transformation method, two specific applications of these methods are included. This paper suggests that "good modeling practice" of release kinetics consists essentially of identifying the most appropriate mathematical conditions corresponding to implied physicochemical phenomena. However, in most of the cases, models can be written but analytical solutions for these models cannot be obtained. Consequently, empiric models remain the first choice, and they receive an important place in the review.
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Affiliation(s)
- Constantin Mircioiu
- Department of Applied Mathematics and Biostatistics, Faculty of Pharmacy, "Carol Davila" University of Medicine and Pharmacy, 020956 Bucharest, Romania.
| | - Victor Voicu
- Department of Clinical Pharmacology, Toxicology and Psychopharmacology, Faculty of Medicine, "Carol Davila" University of Medicine and Pharmacy, 020021 Bucharest, Romania.
| | - Valentina Anuta
- Department of Physical and Colloidal Chemistry, Faculty of Pharmacy, "Carol Davila" University of Medicine and Pharmacy, 020956 Bucharest, Romania.
| | - Andra Tudose
- Department of Applied Mathematics and Biostatistics, Faculty of Pharmacy, "Carol Davila" University of Medicine and Pharmacy, 020956 Bucharest, Romania.
| | - Christian Celia
- Department of Pharmacy, G. D'Annunzio University of Chieti⁻Pescara, 66100 Chieti, Italy.
| | - Donatella Paolino
- Department of Clinical and Experimental Medicine, "Magna Græcia" University of Catanzaro, Germaneto - Catanzaro (CZ) 88100, Italy.
| | - Massimo Fresta
- Department of Health Sciences, School of Pharmacy, "Magna Græcia" University of Catanzaro, Germaneto - Catanzaro (CZ) 88100, Italy.
| | - Roxana Sandulovici
- Department of Applied Mathematics and Biostatistics, Titu Maiorescu University, 004051 Bucharest, Romania.
| | - Ion Mircioiu
- Department of Biopharmacy and Pharmacokinetics, Titu Maiorescu University, 004051 Bucharest, Romania.
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Thew J, Burrage P, Medlicott N, Mallet D. Modelling optimal delivery of bFGF to chronic wounds using ODEs. J Theor Biol 2019; 465:109-116. [PMID: 30582933 DOI: 10.1016/j.jtbi.2018.12.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 12/07/2018] [Accepted: 12/19/2018] [Indexed: 11/17/2022]
Abstract
In this paper, we present an ordinary differential equation model depicting the interactions of basic fibroblast growth factor (bFGF) and its binding agents in a chronic wound. The delivery of bFGF was treated as a control variable and is coupled to an objective functional. By optimising the objective functional with respect to the control, predictions for optimal delivery rates of bFGF are proposed. The optimal control is then validated by comparing the cost of the objective functional for the optimal delivery rate and several alternative delivery rates. This paper addresses two objectives of effective drug delivery to chronic wounds. The first is to provide insight for the priority of delivering bFGF: to minimise the quantity of bFGF, or to optimise the distribution of bound bFGF. For effective concentrations of bound bFGF, the optimisation of bound bFGF must be prioritised over the minimisation of bFGF delivered. The second objective is to comment on the effect of the proteolytic environment within the wound, with the concentration of bound bFGF starting to decrease late in the treatment period for highly proteolytic environments. This will lead to long term complications with wound closure after the treatment has been completed. Also, it was found that for highly proteolytic environments, the cost of delivering bFGF increased. The need for optimal drug delivery is made apparent by the burden of chronic wounds on the medical industry across the developed world.
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Affiliation(s)
- Johnny Thew
- School of Mathematical Sciences, Queensland University of Technology, Australia
| | - Pamela Burrage
- School of Mathematical Sciences, Queensland University of Technology, Australia
| | | | - Dann Mallet
- School of Mathematical Sciences, Queensland University of Technology, Australia; The School of Teacher Education and Leadership, Queensland University of Technology, Brisbane, Australia.
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36
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Caccavo D. An overview on the mathematical modeling of hydrogels' behavior for drug delivery systems. Int J Pharm 2019; 560:175-190. [PMID: 30763681 DOI: 10.1016/j.ijpharm.2019.01.076] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 01/28/2019] [Accepted: 01/31/2019] [Indexed: 02/07/2023]
Abstract
Hydrogels-based systems (HBSs) for drug delivery are nowadays extensively used and the interest in modeling their behavior is dramatically increasing. In this review a critical overview on the modeling approaches is given, quantitatively and qualitatively analyzing the publications on the subject, the trend of the publications per year and the type of modeling approaches. It was found that, despite the drug release fitting models (i.e. Higuchi's equation) are the most abundant, their use for HBSs is decreasing in the last years and luckily, considering the limiting assumption on which they were built, they will be confined to simple mathematical fitting equations. Within the mechanistic models the "multi-component" with the swelling approximation (mass transport only) and with the mechanics (fully coupled) are experiencing the highest growth rate, with much more interest toward the last one that, in the next years could be able to provide a first principles model. Statistical models, especially based on the response surface methodology, are rapidly spreading in the scientific community mainly thanks to their ability to be predictive, regardless of the phenomenology, in the analyzed design space with very low efforts. Neural Networks models for HBSs, in countertrend with their use in the pharmaceutical industry, have never take off preferring less data demanding statistical models.
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Affiliation(s)
- Diego Caccavo
- Department of Industrial Engineering, University of Salerno, 84084 Fisciano, SA, Italy.
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37
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Can drug release rate from implants be tailored using poly(urethane) mixtures? Int J Pharm 2019; 557:390-401. [DOI: 10.1016/j.ijpharm.2018.11.067] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 11/23/2018] [Accepted: 11/24/2018] [Indexed: 12/14/2022]
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38
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De Simone V, Dalmoro A, Lamberti G, Caccavo D, d’Amore M, Barba AA. Effect of binder and load solubility properties on HPMC granules produced by wet granulation process. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2018.12.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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39
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Neuro-fuzzy modeling of ibuprofen-sustained release from tablets based on different cellulose derivatives. Drug Deliv Transl Res 2018; 9:162-177. [DOI: 10.1007/s13346-018-00592-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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40
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41
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Controlled drug release behavior of 5-aminosalicylic acid using polyacrylamide grafted oatmeal (OAT-g-PAM): a pH-sensitive drug carrier. Polym Bull (Berl) 2018. [DOI: 10.1007/s00289-018-2407-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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42
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Zhang X, Gu X, Wang X, Wang H, Mao S. Tunable and sustained-release characteristics of venlafaxine hydrochloride from chitosan-carbomer matrix tablets based on in situ formed polyelectrolyte complex film coating. Asian J Pharm Sci 2018; 13:566-574. [PMID: 32104430 PMCID: PMC7032170 DOI: 10.1016/j.ajps.2018.01.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 01/09/2018] [Indexed: 11/28/2022] Open
Abstract
The objective of this study is to design sustained-release tablets using matrix technology, which can well control the release of highly water-soluble drugs with good system robustness and simple preparation process. Taking venlafaxine hydrochloride (VH) as a drug model, the feasibility of using chitosan (CS), carbomer (CBM) combination system to achieve this goal was studied. Formulation and process variables influencing drug release from CS-CBM matrix tablets were investigated. It was found that CS-CBM combination system weakened the potential influence of CS, CBM material properties and gastric emptying time on drug release profile. Demonstrated by direct observation, differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (FTIR), in situ self-assembled polyelectrolyte complex (PEC) film was formed on the tablet surface during gastrointestinal tract transition, which contributed to the tunable and robust control of drug release. The sustained drug release behavior was further demonstrated in vivo in Beagle dogs, with level A in vitro and in vivo correlation (IVIVC) established successfully. In conclusion, CS-CBM matrix tablets are promising system to tune and control the release of highly water-soluble drugs with good system robustness.
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Affiliation(s)
- Xiaofei Zhang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Xiangqin Gu
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Xiaodan Wang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Huimin Wang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Shirui Mao
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
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43
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New comprehensive mathematical model for HPMC-MCC based matrices to design oral controlled release systems. Eur J Pharm Biopharm 2017; 121:61-72. [DOI: 10.1016/j.ejpb.2017.09.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 08/14/2017] [Accepted: 09/11/2017] [Indexed: 02/01/2023]
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44
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Ashrafizadeh M, S. A. AR, Sadeghnejad S. Enhanced polymer flooding using a novel nano-scale smart polymer: Experimental investigation. CAN J CHEM ENG 2017; 95:2168-2175. [DOI: 10.1002/cjce.22860] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Affiliation(s)
- Marjan Ashrafizadeh
- Department of Chemical and Petroleum Engineering; Sharif University of Technology
| | - Ahmad Ramazani S. A.
- Department of Chemical and Petroleum Engineering; Sharif University of Technology
| | - Saeid Sadeghnejad
- Department of Petroleum Engineering; Faculty of Chemical Engineering; Tarbiat Modares University
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45
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Pareek A, Maheshwari S, Cherlo S, Thavva RSR, Runkana V. Modeling drug release through stimuli responsive polymer hydrogels. Int J Pharm 2017; 532:502-510. [DOI: 10.1016/j.ijpharm.2017.09.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 08/31/2017] [Accepted: 09/01/2017] [Indexed: 01/15/2023]
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46
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Caccavo D, Cascone S, Lamberti G, Dalmoro A, Barba AA. Modeling of the Behavior of Natural Polysaccharides Hydrogels for Bio-pharma Applications. Nat Prod Commun 2017. [DOI: 10.1177/1934578x1701200609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Hydrogels, even if not exclusively obtained from natural sources, are widely used for pharmaceuticals and for biomedical applications. The reasons for their uses are their biocompatibility and the possibility to obtain systems and devices with different properties, due to variable characteristics of the materials. In order to effectively design and produce these systems and devices, two main ways are available: i) trial-and-error process, at least guided by experience, during which the composition of the system and the production steps are changed in order to get the desired behavior; ii) production process guided by the a-priori simulation of the systems’ behavior, thanks to proper tuned mathematical models of the reality. Of course the second approach, when applicable, allows tremendous savings in term of human and instrumental resources. In this mini-review, several modeling approaches useful to describe the behavior of natural polysaccharide-based hydrogels in bio-pharma applications are reported. In particular, reported case histories are: i) the size calculation of micro-particles obtained by ultrasound assisted atomization; ii) the release kinetics from core-shell micro-particles, iii) the solidification behavior of blends of synthetic and natural polymers for gel paving of blood vessels, iv) the drug release from hydrogel-based tablets. This material can be seen as a guide toward the use of mathematical modeling in bio-pharma applications.
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Affiliation(s)
- Diego Caccavo
- Department of Industrial Engineering, Via Giovanni Paolo II, 132, University of Salerno, Fisciano, Italy 84084
| | - Sara Cascone
- Department of Industrial Engineering, Via Giovanni Paolo II, 132, University of Salerno, Fisciano, Italy 84084
| | - Gaetano Lamberti
- Department of Industrial Engineering, Via Giovanni Paolo II, 132, University of Salerno, Fisciano, Italy 84084
| | - Annalisa Dalmoro
- Department of Pharmacy, Via Giovanni Paolo II, 132, University of Salerno, Fisciano, Italy 84084
| | - Anna Angela Barba
- Department of Pharmacy, Via Giovanni Paolo II, 132, University of Salerno, Fisciano, Italy 84084
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47
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Engineering approaches in siRNA delivery. Int J Pharm 2017; 525:343-358. [PMID: 28213276 DOI: 10.1016/j.ijpharm.2017.02.032] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 02/10/2017] [Accepted: 02/11/2017] [Indexed: 12/18/2022]
Abstract
siRNAs are very potent drug molecules, able to silence genes involved in pathologies development. siRNAs have virtually an unlimited therapeutic potential, particularly for the treatment of inflammatory diseases. However, their use in clinical practice is limited because of their unfavorable properties to interact and not to degrade in physiological environments. In particular they are large macromolecules, negatively charged, which undergo rapid degradation by plasmatic enzymes, are subject to fast renal clearance/hepatic sequestration, and can hardly cross cellular membranes. These aspects seriously impair siRNAs as therapeutics. As in all the other fields of science, siRNAs management can be advantaged by physical-mathematical descriptions (modeling) in order to clarify the involved phenomena from the preparative step of dosage systems to the description of drug-body interactions, which allows improving the design of delivery systems/processes/therapies. This review analyzes a few mathematical modeling approaches currently adopted to describe the siRNAs delivery, the main procedures in siRNAs vectors' production processes and siRNAs vectors' release from hydrogels, and the modeling of pharmacokinetics of siRNAs vectors. Furthermore, the use of physical models to study the siRNAs vectors' fate in blood stream and in the tissues is presented. The general view depicts a framework maybe not yet usable in therapeutics, but with promising possibilities for forthcoming applications.
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48
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Jennings CL, Perry EK, Dziubla TD, Puleo DA. Sequential Release of Multiple Drugs from Flexible Drug Delivery Films. INT J POLYM MATER PO 2017; 66:569-576. [PMID: 28736462 PMCID: PMC5515595 DOI: 10.1080/00914037.2016.1252352] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Sequential release of drugs aligned with the phases of tissue healing could reduce scarring. To achieve this aim, layered film devices comprising cellulose acetate phthalate (CAP) and Pluronic F-127 (Pluronic) were loaded with ketoprofen, quercetin, and pirfenidone. Citrate plasticizers were added to impart flexibility. Release of two or three drugs in sequence over several days was obtained for all multilayered devices tested. Mechanical analysis showed that elongation increased and modulus decreased with increasing plasticizer content. Release profiles can be tailored by order of layers, plasticizer concentration, and drug loaded, making CAP-Pluronic an appealing system for inhibiting scar tissue formation.
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Affiliation(s)
- Cheryl L. Jennings
- Department of Biomedical Engineering, University of Kentucky, Lexington, KY, USA
| | - Ellis K. Perry
- Department of Biomedical Engineering, University of Kentucky, Lexington, KY, USA
| | - Thomas D. Dziubla
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY, USA
| | - David A. Puleo
- Department of Biomedical Engineering, University of Kentucky, Lexington, KY, USA
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49
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Ali R, Dashevsky A, Bodmeier R. Poly vinyl acetate and ammonio methacrylate copolymer as unconventional polymer blends increase the mechanical robustness of HPMC matrix tablets. Int J Pharm 2017; 516:3-8. [DOI: 10.1016/j.ijpharm.2016.10.069] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 10/12/2016] [Accepted: 10/28/2016] [Indexed: 11/29/2022]
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50
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Lee Y, Thapa P, Jeong SH, Woo MH, Choi DH. Formulation Optimization and in Vitro Characterization of Orally Disintegrating Films Using a Factorial Design and Mathematical Modeling for Drug Release. Chem Pharm Bull (Tokyo) 2017; 65:166-177. [DOI: 10.1248/cpb.c16-00757] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Yeongbin Lee
- Department of Pharmaceutical Engineering, Inje University
| | | | | | - Mi Hee Woo
- College of Pharmacy, Catholic University of Daegu
| | - Du Hyung Choi
- Department of Pharmaceutical Engineering, Inje University
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