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Perez Bravo JJ, Gerbehaye C, Raquez JM, Mincheva R. Recent Advances in Solid-State Modification for Thermoplastic Polymers: A Comprehensive Review. Molecules 2024; 29:667. [PMID: 38338411 PMCID: PMC10856226 DOI: 10.3390/molecules29030667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 01/27/2024] [Accepted: 01/28/2024] [Indexed: 02/12/2024] Open
Abstract
This review introduces groundbreaking insights in polymer science, specifically spotlighting a novel review of the solid-state modification (SSM) approach of thermoplastic polymers, a method not extensively explored. Unlike traditional melt polymer modification, SSM stands out by incorporating monomers or oligomers into the amorphous phase of polymers through innovative exchange reactions. The background of the study places thermoplastics within the context of their increased use over the past century, highlighting their versatility in various applications and the associated environmental and health concerns due to certain additives. The results section outlines the unique aspects of SSM and its increasing recognition for its potential to enhance material performance in areas such as catalysts and composites. It also discusses the application of SSM in modifying different thermoplastic polymers, highlighting various studies demonstrating the method's effectiveness in altering polymer properties. Finally, this work emphasizes SSM's importance in environmental sustainability and its potential in the recycling and upcycling of plastic materials. It acknowledges the challenges and future perspectives in the field, particularly regarding the scalability of SSM techniques for industrial applications and their role in advancing a circular economy in the polymer industry.
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Affiliation(s)
| | | | - Jean-Marie Raquez
- Laboratory of Polymeric and Composite Materials, CIRMAP, University of Mons, 23, Place du Parc, 7000 Mons, Belgium; (J.J.P.B.)
| | - Rosica Mincheva
- Laboratory of Polymeric and Composite Materials, CIRMAP, University of Mons, 23, Place du Parc, 7000 Mons, Belgium; (J.J.P.B.)
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Dave PN, Macwan PM, Kamaliya B. Biodegradable Gg- cl-poly(NIPAm- co-AA)/- o-MWCNT based hydrogel for combined drug delivery system of metformin and sodium diclofenac: in vitro studies. RSC Adv 2023; 13:22875-22885. [PMID: 37520088 PMCID: PMC10375256 DOI: 10.1039/d3ra04728h] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 07/24/2023] [Indexed: 08/01/2023] Open
Abstract
In the present study Gg-cl-poly(NIPA-co-AA) and Gg-cl-poly(NIPA-co-AA)/-o-MWCNT hydrogels were synthesized using free radical polymerization. We looked into whether combining metformin with diclofenac, a nonsteroidal anti-inflammatory drug (NSAID), would be effective in examining complex formation and analysing the types and intensities of complexes that could result from metformin-diclofenac interactions. The interaction of metformin and diclofenac was studied in vitro at various pH levels and body temperatures. The structure and morphology of the produced hydrogel were characterised using FTIR spectra, SEM analysis, and drug loading tests. As a model drug, the hydrogel was loaded with metformin hydrochloride and sodium diclofenac (DS), and the medicines were released pH-dependently. To explore the drug release kinetics and mechanism, the zero order and first order kinetic models, the Korsemeyar-Peppas model, the Higuchi model, and the Hixson-Crowell model have all been employed. Drug release studies revealed notable characteristics in connection to physiologically predicted pH values, with a high release rate at pH = 9.2. At pH = 9.2, however, both metformin and sodium diclofenac exhibited a Fickian mechanism. Combination treatment may reduce the effective dose of a single drug and hinder metabolic rescue mechanisms. More study is needed to detect any negative effects on individuals.
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Affiliation(s)
- Pragnesh N Dave
- Department of Chemistry, Sardar Patel University Vallabh Vidyangar Gujarat 388 120 India
| | - Pradip M Macwan
- B. N. Patel Institute of Paramedical & Science (Science Division) Sardar Patel Education Trust, Bhalej Road Anand 388001 Gujarat India
| | - Bhagvan Kamaliya
- Department of Chemistry, Sardar Patel University Vallabh Vidyangar Gujarat 388 120 India
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Hodge JG, Zamierowski DS, Robinson JL, Mellott AJ. Evaluating polymeric biomaterials to improve next generation wound dressing design. Biomater Res 2022; 26:50. [PMID: 36183134 PMCID: PMC9526981 DOI: 10.1186/s40824-022-00291-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 08/28/2022] [Indexed: 11/24/2022] Open
Abstract
Wound healing is a dynamic series of interconnected events with the ultimate goal of promoting neotissue formation and restoration of anatomical function. Yet, the complexity of wound healing can often result in development of complex, chronic wounds, which currently results in a significant strain and burden to our healthcare system. The advancement of new and effective wound care therapies remains a critical issue, with the current therapeutic modalities often remaining inadequate. Notably, the field of tissue engineering has grown significantly in the last several years, in part, due to the diverse properties and applications of polymeric biomaterials. The interdisciplinary cohesion of the chemical, biological, physical, and material sciences is pertinent to advancing our current understanding of biomaterials and generating new wound care modalities. However, there is still room for closing the gap between the clinical and material science realms in order to more effectively develop novel wound care therapies that aid in the treatment of complex wounds. Thus, in this review, we discuss key material science principles in the context of polymeric biomaterials, provide a clinical breadth to discuss how these properties affect wound dressing design, and the role of polymeric biomaterials in the innovation and design of the next generation of wound dressings.
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Affiliation(s)
- Jacob G Hodge
- Bioengineering Graduate Program, University of Kansas, Lawrence, KS, USA.,Department of Plastic Surgery, University of Kansas Medical Center, Kansas City, KS, USA
| | - David S Zamierowski
- Department of Plastic Surgery, University of Kansas Medical Center, Kansas City, KS, USA
| | - Jennifer L Robinson
- Department of Chemical and Petroleum Engineering, University of Kansas, Mail Stop: 3051, 3901 Rainbow Blvd, Lawrence, KS, 66160, USA
| | - Adam J Mellott
- Department of Plastic Surgery, University of Kansas Medical Center, Kansas City, KS, USA.
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Surface Modification of ZrO2 Nanoparticles with TEOS to Prepare Transparent ZrO2@SiO2-PDMS Nanocomposite Films with Adjustable Refractive Indices. NANOMATERIALS 2022; 12:nano12142328. [PMID: 35889553 PMCID: PMC9320452 DOI: 10.3390/nano12142328] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 07/02/2022] [Accepted: 07/04/2022] [Indexed: 01/25/2023]
Abstract
Here, highly transparent nanocomposite films with an adjustable refractive index were fabricated through stable dispersion of ZrO2 (n = 2.16) nanoparticles (NPs) subjected to surface modification with SiO2 (n = 1.46) in polydimethylsiloxane (PDMS) (n = 1.42) using the Stöber method. ZrO2 NPs (13.7 nm) were synthesized using conventional hydrothermal synthesis, and their surface modification with SiO2 (ZrO2@SiO2 NPs) was controlled by varying the reaction time (3–54 h). The surface modification of the NPs was characterized using Fourier-transform infrared spectroscopy, dynamic light scattering, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, and ellipsometry. The surface modification was monitored, and the effective layer thickness of SiO2 varied from 0.1 nm to 4.2 nm. The effective refractive index of the ZrO2@SiO2 NPs at λ = 633 nm was gradually reduced from 2.16 to 1.63. The 100 nm nanocomposite film was prepared by spin-coating the dispersion of ZrO2@SiO2 NPs in PDMS on the coverslip. The nanocomposite film prepared using ZrO2@SiO2 NPs with a reaction time of 18 h (ZrO2@SiO2-18h-PDMS) exhibited excellent optical transparency (Taverage = 91.1%), close to the transparency of the coverslip (Taverage = 91.4%) in the visible range, and an adjustable refractive index (n = 1.42–1.60) as the NP content in the film increased from 0 to 50.0 wt%.
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Hariharan P, Sundarrajan S, Arthanareeswaran G, Seshan S, Das DB, Ismail AF. Advancements in modification of membrane materials over membrane separation for biomedical applications-Review. ENVIRONMENTAL RESEARCH 2022; 204:112045. [PMID: 34536369 DOI: 10.1016/j.envres.2021.112045] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 08/24/2021] [Accepted: 08/31/2021] [Indexed: 06/13/2023]
Abstract
A comprehensive overview of various modifications carried out on polymeric membranes for biomedical applications has been presented in this review paper. In particular, different methods of carrying out these modifications have been discussed. The uniqueness of the review lies in the sense that it discusses the surface modification techniques traversing the timeline from traditionally well-established technologies to emerging new techniques, thus giving an intuitive understanding of the evolution of surface modification techniques over time. A critical comparison of the advantages and pitfalls of commonly used traditional and emerging surface modification techniques have been discussed. The paper also highlights the tuning of specific properties of polymeric membranes that are critical for their increased applications in the biomedical industry specifically in drug delivery, along with current challenges faced and where the future potential of research in the field of surface modification of membranes.
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Affiliation(s)
- Pooja Hariharan
- Membrane Research Laboratory, Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, 620015, India
| | - Sujithra Sundarrajan
- Membrane Research Laboratory, Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, 620015, India
| | - G Arthanareeswaran
- Membrane Research Laboratory, Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, 620015, India.
| | - Sunanda Seshan
- Membrane Research Laboratory, Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, 620015, India
| | - Diganta B Das
- Department of Chemical Engineering, Loughborough University, Loughborough, LE11 3TU, UK
| | - A F Ismail
- Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, Johor, Malaysia
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Goudanavar P, Sreeharsha N, Murtale S, Naveen NR, Alsanie W, Alhomrani M, Alamri A, Basheeruddin Asdaq S, Anwer M, Gharsan M, Fattepur S. Synthesis and evaluation of grafted xanthan gum as a drug carrier in developing lornoxicam gel formulations. Pharmacogn Mag 2022. [DOI: 10.4103/pm.pm_161_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Shakiba S, Astete CE, Cueto R, Rodrigues DF, Sabliov CM, Louie SM. Asymmetric flow field-flow fractionation (AF4) with fluorescence and multi-detector analysis for direct, real-time, size-resolved measurements of drug release from polymeric nanoparticles. J Control Release 2021; 338:410-421. [PMID: 34453956 DOI: 10.1016/j.jconrel.2021.08.041] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 06/16/2021] [Accepted: 08/21/2021] [Indexed: 12/18/2022]
Abstract
Polymeric nanoparticles (NPs) are typically designed to enhance the efficiency of drug delivery by controlling the drug release rate. Hence, it is critical to obtain an accurate drug release profile. This study presents the first application of asymmetric flow field-flow fractionation (AF4) with fluorescence detection (FLD) to quantify release profiles of fluorescent drugs from polymeric NPs, specifically poly(lactic-co-glycolic acid) NPs loaded with enrofloxacin (PLGA-Enro NPs). In contrast to conventional measurements requiring separation of the NPs and dissolved drugs (typically by dialysis) prior to quantification, AF4 provides in situ removal of unincorporated drugs, while the judicious combination of online FLD and UV detection selectively provides the entrapped drug and PLGA NP concentrations, respectively, and hence the drug loading. NP size and shape factors are simultaneously obtained by online dynamic and multi-angle light scattering (DLS, MALS) detectors. The AF4 and dialysis approaches were compared to evaluate drug release from PLGA-Enro NPs containing a high proportion (≈ 94%) of unincorporated (burst release) drug at three temperatures spanning the glass transition temperature (Tg ≈ 33 °C) of the NPs. The AF4 method clearly captured the temperature dependence of the drug release relative to Tg (from no release at 20 °C to rapid release at 37 °C). In contrast, dialysis was not able to distinguish differences in the extent or rate of release of the entrapped drug because of interferences from the burst release, as well as the dialysis lag time, as supported through a diffusion model and validation experiments on purified NPs with low burst release. Finally, the multi-detector AF4 analysis yielded unique size-dependent release profiles across the entire NP size distribution, with smaller NPs showing faster release consistent with radial diffusion from the NPs. Overall, this study demonstrates the novel application and advantages of multi-detector AF4 methods, particularly AF4-FLD, to obtain direct, size-resolved release profiles of fluorescent drugs from polymeric NPs.
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Affiliation(s)
- Sheyda Shakiba
- Department of Civil & Environmental Engineering, University of Houston, Houston, TX 77004, United States
| | - Carlos E Astete
- Department of Biological & Agricultural Engineering, Louisiana State University, Baton Rouge, LA 70803, United States
| | - Rafael Cueto
- Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803, United States
| | - Debora F Rodrigues
- Department of Civil & Environmental Engineering, University of Houston, Houston, TX 77004, United States
| | - Cristina M Sabliov
- Department of Biological & Agricultural Engineering, Louisiana State University, Baton Rouge, LA 70803, United States
| | - Stacey M Louie
- Department of Civil & Environmental Engineering, University of Houston, Houston, TX 77004, United States.
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Lu S, Xia R, Wang J, Pei Q, Xie Z, Jing X. Engineering Paclitaxel Prodrug Nanoparticles via Redox-Activatable Linkage and Effective Carriers for Enhanced Chemotherapy. ACS APPLIED MATERIALS & INTERFACES 2021; 13:46291-46302. [PMID: 34558902 DOI: 10.1021/acsami.1c12353] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The current clinical performance of chemotherapy is far from satisfactory, greatly limited by insufficient delivery efficacy and serious systemic side effects. Dimeric prodrug systems are emerging as valuable strategies for boosting the antitumor outcome. Here, dimeric paclitaxel prodrugs were synthesized with different bridged linkers, and the formed prodrug nanoparticles possessed excellent colloidal stability and ultrahigh drug content. The diselenide bond containing paclitaxel prodrugs could respond to a redox-heterogeneous intracellular microenvironment for on-demand drug release and subsequently show a selective cytotoxicity toward tumor cells against normal cells. Furthermore, the optimal carrier materials were screened out according to their contribution on stability, endocytosis, cytotoxicity, biodistribution, and antitumor efficacy. Compared with DSPE-PEG, human serum albumin, and Fe-tannic acid-based complex, F127 anchored dimeric paclitaxel nanoformulations exhibited preferential tumor accumulation and potent anticancer effect. Our present work provides deep insight into the development of advanced nanoformulations with comprehensive advantages for enhancing cancer therapy.
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Affiliation(s)
- Shaojin Lu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
- University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Rui Xia
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
- University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Jian Wang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
- University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Qing Pei
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
| | - Zhigang Xie
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
- University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Xiabin Jing
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
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Bhosale RR, Osmani RAM, Abu Lila AS, Khafagy ES, Arab HH, Gowda DV, Rahamathulla M, Hani U, Adnan M, Gangadharappa HV. Ghatti gum-base graft copolymer: a plausible platform for pH-controlled delivery of antidiabetic drugs. RSC Adv 2021; 11:14871-14882. [PMID: 35423983 PMCID: PMC8697774 DOI: 10.1039/d1ra01536b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 04/09/2021] [Indexed: 12/15/2022] Open
Abstract
In the present study, we aimed to develop a novel pH-sensitive polymeric delivery system (GG-g-PMMA) for antidiabetic therapy via grafting ghatti gum (GG) with methyl methacrylate (MMA) chains. The free radical polymerization technique was adopted to graft ghatti gum with methyl methacrylate, using ceric ammonium nitrate (CAN) as a redox initiator. The impact on grafting parameters such as grafting percentage (G%) and grafting efficiency (GE), of monomer and initiator concentrations was evaluated. The batch with higher grafting efficiency and percentage grafting was selected and characterized by elemental analysis (C, H and N), DSC, FT-IR spectroscopy, XRD, 1H-NMR and SEM morphology study. In addition, the efficacy of GG-g-PMMA-based pellets loaded with the hypoglycemic agent, metformin hydrochloride, to sustain drug release was investigated. In vitro release studies demonstrated a pH-dependent sustained release of the drug from GG-g-PMMA pellets. In addition, acute oral toxicity studies and histopathological analysis suggested the safety and biocompatibility of the grafted gum. Most importantly, in vivo efficacy studies underscored the efficient hypoglycemic potential of the prepared formulation, which was comparable to that of a sustained release marketed formulation. These results suggest that the developed pH-sensitive polymeric delivery system (GG-g-PMMA) might represent a promising delivery vehicle for facilitated antidiabetic therapy.
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Affiliation(s)
- Rohit R Bhosale
- Department of Pharmaceutics, Krishna Institute of Pharmacy, Krishna Institute of Medical Sciences Deemed to be University Karad-415539 Maharashtra India
| | - Riyaz Ali M Osmani
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay (IITB) Mumbai-400076 Maharashtra India
| | - Amr S Abu Lila
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Zagazig University Zagazig-44519 Egypt
- Department of Pharmaceutics, College of Pharmacy, University of Hail Hail-81442 Saudi Arabia
| | - El-Sayed Khafagy
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam Bin Abdulaziz University Al-Kharj-11942 Saudi Arabia
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Suez Canal University Ismailia-41552 Egypt
| | - Hany H Arab
- Department of Pharmacology and Toxicology, College of Pharmacy, Taif University Taif-21944 Saudi Arabia
| | - Devegowda V Gowda
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education and Research Mysuru Karnataka 570015 India
| | - Mohamed Rahamathulla
- Department of Pharmaceutics, College of Pharmacy, King Khalid University Guraiger Abha 62529 Saudi Arabia
| | - Umme Hani
- Department of Pharmaceutics, College of Pharmacy, King Khalid University Guraiger Abha 62529 Saudi Arabia
| | - Mohd Adnan
- Department of Biology, College of Science, University of Hail Hail-2440 Saudi Arabia
| | - Hosahalli V Gangadharappa
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education and Research Mysuru Karnataka 570015 India
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Hirun N, Tantishaiyakul V, Sangfai T, Boonlai W, Soontaranon S, Rugmai S. The effect of poly(acrylic acid) on temperature‐dependent behaviors and structural evolution of poloxamer 407. POLYM INT 2021. [DOI: 10.1002/pi.6197] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Namon Hirun
- Thammasat University Research Unit in Smart Materials and Innovative Technology for Pharmaceutical Applications (SMIT‐Pharm), Faculty of Pharmacy Thammasat University Pathumthani Thailand
| | - Vimon Tantishaiyakul
- Center of Excellence for Drug Delivery System and Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences Prince of Songkla University Hat‐Yai Thailand
| | | | - Wannisa Boonlai
- Center of Excellence for Drug Delivery System and Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences Prince of Songkla University Hat‐Yai Thailand
| | - Siriwat Soontaranon
- Synchrotron Light Research Institute (Public Organization) Nakhon Ratchasima Thailand
| | - Supagorn Rugmai
- Synchrotron Light Research Institute (Public Organization) Nakhon Ratchasima Thailand
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Eum J, Kim Y, Um DJ, Shin J, Yang H, Jung H. Solvent-Free Polycaprolactone Dissolving Microneedles Generated via the Thermal Melting Method for the Sustained Release of Capsaicin. MICROMACHINES 2021; 12:167. [PMID: 33567577 PMCID: PMC7914501 DOI: 10.3390/mi12020167] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/03/2021] [Accepted: 02/04/2021] [Indexed: 12/24/2022]
Abstract
(1) Background: Dissolving microneedles (DMNs), a transdermal drug delivery system, have been developed to treat various diseases in a minimally invasive, painless manner. However, the currently available DMNs are based on burst release systems due to their hydrophilic backbone polymer. Although hydrophobic biodegradable polymers have been employed on DMNs for sustained release, dissolution in an organic solvent is required for fabrication of such DMNs. (2) Method: To overcome the aforementioned limitation, novel separable polycaprolactone (PCL) DMNs (SPCL-DMNs) were developed to implant a PCL-encapsulated drug into the skin. PCL is highly hydrophobic, degrades over a long time, and has a low melting point. Under thermal melting, PCL encapsulated capsaicin and could be fabricated into a DMN without the risk of toxicity from an organic solvent. (3) Results: Optimized SPCL-DMNs, containing PCL (height 498.3 ± 5.8 µm) encapsulating 86.66 ± 1.13 µg capsaicin with a 10% (w/v) polyvinyl alcohol and 20% (w/v) polyvinylpyrrolidone mixture as a base polymer, were generated. Assessment of the drug release profile revealed that this system could sustainably release capsaicin for 15 days from PCL being implanted in porcine skin. (4) Conclusion: The implantable SPCL-DMN developed here has the potential for future development of toxicity-free, sustained release DMNs.
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Affiliation(s)
- Jaehong Eum
- Department of Biotechnology, Yonsei University, Seoul 03722, Korea; (J.E.); (Y.K.); (D.J.U.); (J.S.)
| | - Youseong Kim
- Department of Biotechnology, Yonsei University, Seoul 03722, Korea; (J.E.); (Y.K.); (D.J.U.); (J.S.)
| | - Daniel Junmin Um
- Department of Biotechnology, Yonsei University, Seoul 03722, Korea; (J.E.); (Y.K.); (D.J.U.); (J.S.)
| | - Jiwoo Shin
- Department of Biotechnology, Yonsei University, Seoul 03722, Korea; (J.E.); (Y.K.); (D.J.U.); (J.S.)
| | | | - Hyungil Jung
- Department of Biotechnology, Yonsei University, Seoul 03722, Korea; (J.E.); (Y.K.); (D.J.U.); (J.S.)
- JUVIC Inc., Seoul 08389, Korea;
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Romero M, Macchione MA, Mattea F, Strumia M. The role of polymers in analytical medical applications. A review. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105366] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Sadashivaiah R, Babu BKS. Role of sodium l-cysteine alginate conjugate and isopropyl myristate to enhance the permeation enhancing activity of BCS class III drug from TDDS; optimization by central composite design and in vivo pharmacokinetics study. Drug Dev Ind Pharm 2020; 46:1427-1442. [PMID: 32623912 DOI: 10.1080/03639045.2020.1791167] [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] [Indexed: 10/23/2022]
Abstract
OBJECTIVE The objective of the present research was to study the effect and optimization of sodium alginate l-cysteine conjugate and permeation enhancer on permeation of high soluble low permeable ropinirole hydrochloride from the transdermal formulation. METHODS Sodium alginate l-cysteine conjugate was prepared and characterized and the same was added into a transdermal formulation along with IPM as a permeation enhancer. Twelve primary formulations were prepared by solvent casting method and evaluated. The results were fed into Design Expert® Software to obtain optimized formulation. The optimized formulation was evaluated for physicochemical, ex vivo permeation, stability, skin irritation, and pharmacokinetic studies. RESULTS The results of the characterization of prepared sodium alginate l-cysteine conjugate confirmed the thiolation process. Stability studies suggested that the drug was compatible with all the excipients. SEM images of the transdermal patch revealed that the amorphous drug was uniformly distributed. From the design space, the optimized formulation from the polymer's ratio (SA: SACC; 4:6) and IPM 9.5%w/w of polymers weight showed target steady state flux 9.004 µg/cm2/h with maximum drug permeation. The increased target flux and maximum drug permeation from an optimized patch suggested that there was an effect of SACC on ropinirole hydrochloride permeation in the presence of IPM as a permeation enhancer. Pharmacokinetic studies in rabbits showed that the optimized patch improved bioavailability as compared to marketed oral tablets. CONCLUSIONS The study was concluded that there was a positive effect of sodium alginate l-cysteine conjugate and IPM on ropinirole hydrochloride permeation from the transdermal formulation.
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Affiliation(s)
- R Sadashivaiah
- Department of Pharmaceutics, Government College of Pharmacy, Bengaluru, India
| | - B K Satheesha Babu
- Department of Pharmaceutics, Government College of Pharmacy, Bengaluru, India
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Biocompatibility of Materials for Biomedical Engineering. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1250:125-140. [PMID: 32601942 DOI: 10.1007/978-981-15-3262-7_9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
In the tissue engineering research field, nanobiomaterials highlight the impact of novel bioactive materials in both current applications and their potentials in future progress for tissue engineering and regenerative medicine. Tissue engineering is a well-investigated and challenging biomedical field, with promising perspectives to improve and support quality of life for the patient. To assess the response of those extracellular matrices (ECMs), induced by biomedical materials, this review will focus on cell response to natural biomaterials for biocompatibility.
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Panchal S, Vasava DV. Biodegradable Polymeric Materials: Synthetic Approach. ACS OMEGA 2020; 5:4370-4379. [PMID: 32175484 PMCID: PMC7066571 DOI: 10.1021/acsomega.9b04422] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 02/18/2020] [Indexed: 05/22/2023]
Abstract
Polymeric materials obtained from petroleum resources are nonbiodegradable. Defying degradation, they damage the environment as a result of their ending up in the landfills. Synthesized biodegradable polymeric materials (BPMs) have received increasing interest owing to the difficulty in procuring reproducibility when using natural polymeric materials. Through the modification of natural polymeric materials or materials via chemical, microbiological, enzyme-mediated, and chemo-enzymatic synthesis, a comprehensive range of variegated BPMs can be reaped. Amended natural polymeric materials such as starch, cellulose, and chitin have enhanced properties, while synthetic BPMs such as PLA, PGA, PCL, PDS, and PLGA are explicitly designed to pursue coveted applications in multifarious domains such as whole diagnostics and therapeutics. Synthesized BPMs can be embedded with tailored characteristics to justify the neoteric entails of mankind.
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Acrylamide grafted neem (Azadirachta indica) gum polymer: Screening and exploration as a drug release retardant for tablet formulation. Carbohydr Polym 2020; 229:115357. [DOI: 10.1016/j.carbpol.2019.115357] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 08/28/2019] [Accepted: 09/19/2019] [Indexed: 01/06/2023]
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Sievers J, Zschoche S, Dockhorn R, Friedrichs J, Werner C, Freudenberg U. Temperature-Induced Mechanomodulation of Interpenetrating Networks of Star Poly(ethylene glycol)-Heparin and Poly( N-isopropylacrylamide). ACS APPLIED MATERIALS & INTERFACES 2019; 11:41862-41874. [PMID: 31589405 DOI: 10.1021/acsami.9b11719] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Thermoresponsive interpenetrating networks (IPNs) were prepared by sequential synthesis of a biohybrid network of star-shaped poly(ethylene glycol) [starPEG] and heparin and a poly(N-isopropylacrylamide)-polymer network. Amide bond formation was used for cross-linking of the starPEG-heparin network and photo-cross-linking with N,N'-methylenebis(acrylamide) was applied for the formation of the second polymer network. Both networks were linked by chain entanglements and hydrogen bonds only. The obtained sequential IPNs (seq-IPNs) showed temperature-dependent network properties as reflected by swelling and elasticity data as well as by the release of glycosaminoglycan-binding growth factors. The elastic modulus of the seq-IPNs was found to be amplified up to 50-fold upon temperature change from 22 to 37 °C compared to the intrinsic elastic moduli of the two combined networks. The heparin concentration (as well as the complexation of growth factors with the hydrogel-contained heparin) was demonstrated to be variably independent from the mechanical properties (elastic moduli) of the hydrogels. Illustrating the usability of the developed seq-IPN platform for cell fate control, the thermo-modulation of the release of vascular endothelial growth factor (VEGF) and bone morphogenetic protein 2 (BMP-2) is shown as well as the osteogenic differentiation of human mesenchymal stem cells exposed to stiff and BMP-2 releasing seq-IPNs.
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Affiliation(s)
- Jana Sievers
- Leibniz Institute of Polymer Research Dresden , Hohe Strasse 6 , 01069 Dresden , Germany
| | - Stefan Zschoche
- Leibniz Institute of Polymer Research Dresden , Hohe Strasse 6 , 01069 Dresden , Germany
| | - Ron Dockhorn
- Leibniz Institute of Polymer Research Dresden , Hohe Strasse 6 , 01069 Dresden , Germany
| | - Jens Friedrichs
- Leibniz Institute of Polymer Research Dresden , Hohe Strasse 6 , 01069 Dresden , Germany
| | - Carsten Werner
- Leibniz Institute of Polymer Research Dresden , Hohe Strasse 6 , 01069 Dresden , Germany
- Excellence Centers for Regenerative Therapies Dresden and Physics of Life , Technische Universität Dresden , Fetscherstrasse 105 , 01307 Dresden , Germany
| | - Uwe Freudenberg
- Leibniz Institute of Polymer Research Dresden , Hohe Strasse 6 , 01069 Dresden , Germany
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Bazrafshan Z, Stylios GK. A novel approach to enhance the spinnability of collagen fibers by graft polymerization. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 94:108-116. [DOI: 10.1016/j.msec.2018.09.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 08/23/2018] [Accepted: 09/06/2018] [Indexed: 01/31/2023]
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Helal NA, Eassa HA, Amer AM, Eltokhy MA, Edafiogho I, Nounou MI. Nutraceuticals' Novel Formulations: The Good, the Bad, the Unknown and Patents Involved. RECENT PATENTS ON DRUG DELIVERY & FORMULATION 2019; 13:105-156. [PMID: 31577201 PMCID: PMC6806606 DOI: 10.2174/1872211313666190503112040] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 04/07/2019] [Accepted: 04/10/2019] [Indexed: 02/07/2023]
Abstract
Traditional nutraceuticals and cosmeceuticals hold pragmatic nature with respect to their definitions, claims, purposes and marketing strategies. Their definitions are not well established worldwide. They also have different regulatory definitions and registration regulatory processes in different parts of the world. Global prevalence of nutraceuticals and cosmeceuticals is noticeably high with large market share with minimal regulation compared to traditional drugs. The global market is flooded with nutraceuticals and cosmeceuticals claiming to be of natural origin and sold with a therapeutic claim by major online retail stores such as Amazon and eBay. Apart from the traditional formulations, many manufacturers and researchers use novel formulation technologies in nutraceutical and cosmeceutical formulations for different reasons and objectives. Manufacturers tend to differentiate their products with novel formulations to increase market appeal and sales. On the other hand, researchers use novel strategies to enhance nutraceuticals and cosmeceuticals activity and safety. The objective of this review is to assess the current patents and research adopting novel formulation strategies in nutraceuticals and cosmeceuticals. Patents and research papers investigating nutraceutical and cosmeceutical novel formulations were surveyed for the past 15 years. Various nanosystems and advanced biotechnology systems have been introduced to improve the therapeutic efficacy, safety and market appeal of nutraceuticals and cosmeceuticals, including liposomes, polymeric micelles, quantum dots, nanoparticles, and dendrimers. This review provides an overview of nutraceuticals and cosmeceuticals current technologies, highlighting their pros, cons, misconceptions, regulatory definitions and market. This review also aims in separating the science from fiction in the nutraceuticals and cosmeceuticals development, research and marketing.
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Affiliation(s)
- Nada A. Helal
- Both authors contributed equality to this manuscript
| | - Heba A. Eassa
- Both authors contributed equality to this manuscript
| | | | | | | | - Mohamed I. Nounou
- Address correspondence to this author at the Department of Pharmaceutical Sciences (DPS), School of Pharmacy and Physician Assistant Studies (SOPPAS), University of Saint Joseph (USJ), Hartford, CT, 06103, USA;
E-mail:
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20
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Kozawa SK, Matsumoto K, Suzuki A, Sawamoto M, Terashima T. Self‐assembly of amphiphilic ABA random triblock copolymers in water. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/pola.29178] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Susan K. Kozawa
- Department of Polymer Chemistry, Graduate School of EngineeringKyoto University, Katsura Nishikyo‐ku Kyoto 615‐8510 Japan
- Department of Macromolecular Science and EngineeringCase Western Reserve University, 2100 Adelbert Road Cleveland Ohio 44106
| | - Kazuma Matsumoto
- Department of Polymer Chemistry, Graduate School of EngineeringKyoto University, Katsura Nishikyo‐ku Kyoto 615‐8510 Japan
| | - Ayaka Suzuki
- Department of Polymer Chemistry, Graduate School of EngineeringKyoto University, Katsura Nishikyo‐ku Kyoto 615‐8510 Japan
| | - Mitsuo Sawamoto
- Department of Polymer Chemistry, Graduate School of EngineeringKyoto University, Katsura Nishikyo‐ku Kyoto 615‐8510 Japan
- Institute of Science and Technology Research, Chubu University, 1200 Matsumoto‐cho Kasugai Aichi 487‐8501 Japan
| | - Takaya Terashima
- Department of Polymer Chemistry, Graduate School of EngineeringKyoto University, Katsura Nishikyo‐ku Kyoto 615‐8510 Japan
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21
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Campos EVR, Proença PLF, Oliveira JL, Pereira AES, de Morais Ribeiro LN, Fernandes FO, Gonçalves KC, Polanczyk RA, Pasquoto-Stigliani T, Lima R, Melville CC, Della Vechia JF, Andrade DJ, Fraceto LF. Carvacrol and linalool co-loaded in β-cyclodextrin-grafted chitosan nanoparticles as sustainable biopesticide aiming pest control. Sci Rep 2018; 8:7623. [PMID: 29769620 PMCID: PMC5955913 DOI: 10.1038/s41598-018-26043-x] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 05/04/2018] [Indexed: 02/07/2023] Open
Abstract
Pesticides are the main tactics for pest control because they reduce the pest population very fast and their efficiency does not depend on abiotic factors. However, the indiscriminate use of these substances can speed up the development of resistant populations and causing environmental contamination. Therefore, alternative methods of pest control are sought, such as the use of botanical compounds. Nanoencapsulation of volatile compounds has been shown to be an important tool that can be used to overcome the lack of stability of these compounds. In this work, we describe the preparation and characterization of chitosan nanoparticles functionalized with β-cyclodextrin containing carvacrol and linalool. The toxicity and biological activity were evaluated. Decreases of toxicity were observed when the compounds were nanoencapsulated. The nanoparticles presented insecticidal activity against the species Helicoverpa armigera (corn earworm) and Tetranychus urticae (spider mite). In addition, repellent activity and reduction in oviposition were observed for the mites.
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Affiliation(s)
- Estefânia V R Campos
- São Paulo State University - UNESP, Institute of Science and Technology, Sorocaba, SP, Brazil.,Department of Biochemistry and Tissue Biology, State University of Campinas, Campinas, SP, Brazil
| | - Patrícia L F Proença
- São Paulo State University - UNESP, Institute of Science and Technology, Sorocaba, SP, Brazil
| | - Jhones L Oliveira
- São Paulo State University - UNESP, Institute of Science and Technology, Sorocaba, SP, Brazil
| | - Anderson E S Pereira
- São Paulo State University - UNESP, Institute of Science and Technology, Sorocaba, SP, Brazil
| | | | - Fabrício O Fernandes
- São Paulo State University - UNESP, College of Agricultural and Veterinary Sciences, Department of Crop Protection, Jaboticabal, SP, Brazil
| | - Kelly C Gonçalves
- São Paulo State University - UNESP, College of Agricultural and Veterinary Sciences, Department of Crop Protection, Jaboticabal, SP, Brazil
| | - Ricardo A Polanczyk
- São Paulo State University - UNESP, College of Agricultural and Veterinary Sciences, Department of Crop Protection, Jaboticabal, SP, Brazil
| | | | - Renata Lima
- Department of Biotechnology, University of Sorocaba, Sorocaba, Brazil
| | - Cirano C Melville
- São Paulo State University - UNESP, College of Agricultural and Veterinary Sciences, Department of Crop Protection, Jaboticabal, SP, Brazil
| | - Jaqueline F Della Vechia
- São Paulo State University - UNESP, College of Agricultural and Veterinary Sciences, Department of Crop Protection, Jaboticabal, SP, Brazil
| | - Daniel J Andrade
- São Paulo State University - UNESP, College of Agricultural and Veterinary Sciences, Department of Crop Protection, Jaboticabal, SP, Brazil
| | - Leonardo F Fraceto
- São Paulo State University - UNESP, Institute of Science and Technology, Sorocaba, SP, Brazil. .,Department of Biochemistry and Tissue Biology, State University of Campinas, Campinas, SP, Brazil.
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22
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Khan MA, Raza A, Ovais M, Sohail MF, Ali S. Current state and prospects of nano-delivery systems for sorafenib. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2018.1429434] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Muhammad Adeeb Khan
- School of Material Science and Engineering (MSE), Nanyang Technological University, Nanyang, Singapore
- Department of Zoology, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
- NILOP Nanomedicine Research Labs, National Institute of Lasers & Optronics (NILOP), Islamabad, Pakistan
| | - Abida Raza
- NILOP Nanomedicine Research Labs, National Institute of Lasers & Optronics (NILOP), Islamabad, Pakistan
| | - Muhammad Ovais
- Department of Biotechnology, Quaid-i-Azam University, Islamabad, Pakistan
| | - Muhammad Farhan Sohail
- Department of Medicine, Biomaterials Innovation Research Center, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA, USA
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Lahore Campus, Lahore, Pakistan
| | - Shaukat Ali
- Department of Zoology, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
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23
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Campos EVR, Oliveira JL, Fraceto LF. Poly(ethylene glycol) and Cyclodextrin-Grafted Chitosan: From Methodologies to Preparation and Potential Biotechnological Applications. Front Chem 2017; 5:93. [PMID: 29164107 PMCID: PMC5681902 DOI: 10.3389/fchem.2017.00093] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 10/24/2017] [Indexed: 12/21/2022] Open
Abstract
Chitosan, a polyaminosaccharide obtained by alkaline deacetylation of chitin, possesses useful properties including biodegradability, biocompatibility, low toxicity, and good miscibility with other polymers. It is extensively used in many applications in biology, medicine, agriculture, environmental protection, and the food and pharmaceutical industries. The amino and hydroxyl groups present in the chitosan backbone provide positions for modifications that are influenced by factors such as the molecular weight, viscosity, and type of chitosan, as well as the reaction conditions. The modification of chitosan by chemical methods is of interest because the basic chitosan skeleton is not modified and the process results in new or improved properties of the material. Among the chitosan derivatives, cyclodextrin-grafted chitosan and poly(ethylene glycol)-grafted chitosan are excellent candidates for a range of biomedical, environmental decontamination, and industrial purposes. This work discusses modifications including chitosan with attached cyclodextrin and poly(ethylene glycol), and the main applications of these chitosan derivatives in the biomedical field.
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Affiliation(s)
- Estefânia V. R. Campos
- Department of Environmental Engineering, Institute of Science and Technology, São Paulo State University, Sorocaba, Brazil
- Department of Biochemistry and Tissue Biology, Institute of Biology, State University of Campinas, Campinas, Brazil
| | - Jhones L. Oliveira
- Department of Environmental Engineering, Institute of Science and Technology, São Paulo State University, Sorocaba, Brazil
| | - Leonardo F. Fraceto
- Department of Environmental Engineering, Institute of Science and Technology, São Paulo State University, Sorocaba, Brazil
- Department of Biochemistry and Tissue Biology, Institute of Biology, State University of Campinas, Campinas, Brazil
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24
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Bazrafshan Z, Stylios GK. One-pot approach synthesizing and characterization of random copolymerization of ethyl acrylate-co-methyl methacrylate with broad range of glass transition temperature onto collagen. POLYM ENG SCI 2017. [DOI: 10.1002/pen.24688] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Zahra Bazrafshan
- Research Institute for flexible material; School of Textiles, Heriot-Watt University; Galashiels UK
| | - George K. Stylios
- Research Institute for flexible material; School of Textiles, Heriot-Watt University; Galashiels UK
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25
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Indomethacin-containing interpolyelectrolyte complexes based on Eudragit ® E PO/S 100 copolymers as a novel drug delivery system. Int J Pharm 2017; 524:121-133. [DOI: 10.1016/j.ijpharm.2017.03.053] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Revised: 03/20/2017] [Accepted: 03/23/2017] [Indexed: 11/24/2022]
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26
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Grymonpré W, Verstraete G, Van Bockstal PJ, Van Renterghem J, Rombouts P, De Beer T, Remon JP, Vervaet C. In-line monitoring of compaction properties on a rotary tablet press during tablet manufacturing of hot-melt extruded amorphous solid dispersions. Int J Pharm 2016; 517:348-358. [PMID: 27988376 DOI: 10.1016/j.ijpharm.2016.12.033] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 12/12/2016] [Accepted: 12/13/2016] [Indexed: 11/26/2022]
Abstract
As the number of applications for polymers in pharmaceutical development is increasing, there is need for fundamental understanding on how such compounds behave during tableting. This research is focussed on the tableting behaviour of amorphous polymers, their solid dispersions and the impact of hot-melt extrusion on the compaction properties of these materials. Soluplus, Kollidon VA 64 and Eudragit EPO were selected as amorphous polymers since these are widely studied carriers for solid dispersions, while Celecoxib was chosen as BCS class II model drug. Neat polymers and physical mixtures (up to 35% drug load) were processed by hot-melt extrusion (HME), milled and sieved to obtain powders with comparable particle sizes as the neat polymer. A novel approach was used for in-line analysis of the compaction properties on a rotary tablet press (Modul P, GEA) using complementary sensors and software (CDAAS, GEA). By combining 'in-die' and 'out-of-die' techniques, it was possible to investigate in a comprehensive way the impact of HME on the tableting behaviour of amorphous polymers and their formulations. The formation of stable glassy solutions altered the formulations towards more fragmentary behaviour under compression which was beneficial for the tabletability. Principal component analysis (PCA) was applied to summarize the behaviour during compaction of the formulations, enabling the selection of Soluplus and Kollidon VA 64 as the most favourable polymers for compaction of glassy solutions.
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Affiliation(s)
- W Grymonpré
- Laboratory of Pharmaceutical Technology, Ghent University, Ghent, Belgium
| | - G Verstraete
- Laboratory of Pharmaceutical Technology, Ghent University, Ghent, Belgium
| | - P J Van Bockstal
- Laboratory of Pharmaceutical Process Analytical Technology, Ghent University, Ghent, Belgium
| | - J Van Renterghem
- Laboratory of Pharmaceutical Process Analytical Technology, Ghent University, Ghent, Belgium
| | - P Rombouts
- Department of Electronics and Information Systems (ELIS), Ghent University, Ghent, Belgium
| | - T De Beer
- Laboratory of Pharmaceutical Process Analytical Technology, Ghent University, Ghent, Belgium
| | - J P Remon
- Laboratory of Pharmaceutical Technology, Ghent University, Ghent, Belgium
| | - C Vervaet
- Laboratory of Pharmaceutical Technology, Ghent University, Ghent, Belgium.
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Hydrogel-Based Controlled Delivery Systems for Articular Cartilage Repair. BIOMED RESEARCH INTERNATIONAL 2016; 2016:1215263. [PMID: 27642587 PMCID: PMC5011507 DOI: 10.1155/2016/1215263] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 07/12/2016] [Indexed: 12/19/2022]
Abstract
Delivery of bioactive factors is a very valuable strategy for articular cartilage repair. Nevertheless, the direct supply of such biomolecules is limited by several factors including rapid degradation, the need for supraphysiological doses, the occurrence of immune and inflammatory responses, and the possibility of dissemination to nontarget sites that may impair their therapeutic action and raise undesired effects. The use of controlled delivery systems has the potential of overcoming these hurdles by promoting the temporal and spatial presentation of such factors in a defined target. Hydrogels are promising materials to develop delivery systems for cartilage repair as they can be easily loaded with bioactive molecules controlling their release only where required. This review exposes the most recent technologies on the design of hydrogels as controlled delivery platforms of bioactive molecules for cartilage repair.
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28
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Pushpamalar J, Veeramachineni AK, Owh C, Loh XJ. Biodegradable Polysaccharides for Controlled Drug Delivery. Chempluschem 2016; 81:504-514. [DOI: 10.1002/cplu.201600112] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Revised: 04/30/2016] [Indexed: 12/11/2022]
Affiliation(s)
| | | | - Cally Owh
- Institute of Materials Research and Engineering (IMRE); A*STAR; 3 Research Link Singapore 117602 Singapore
| | - Xian Jun Loh
- Institute of Materials Research and Engineering (IMRE); A*STAR; 3 Research Link Singapore 117602 Singapore
- Department of Materials Science and Engineering; National University of Singapore; 9 Engineering Drive 1 Singapore 117576 Singapore
- Singapore Eye Research Institute; 11 Third Hospital Avenue Singapore 168751 Singapore
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29
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Xie X, Luo S, Mukerabigwi JF, Mei J, Zhang Y, Wang S, Xiao W, Huang X, Cao Y. Targeted nanoparticles from xyloglucan–doxorubicin conjugate loaded with doxorubicin against drug resistance. RSC Adv 2016. [DOI: 10.1039/c6ra01779g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The novel targeted Xyloglucan–doxorubicin nanoparticle drug delivery systems (DOX nano-DDSs) exhibited improved cellular uptake, increased accumulation in tumor, higher cytotoxicity against drug resistant tumor cells and reduced side effects.
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Affiliation(s)
- Xuan Xie
- Key Laboratory of Pesticide and Chemical Biology (Ministry of Education)
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
| | - Shiying Luo
- Key Laboratory of Pesticide and Chemical Biology (Ministry of Education)
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
| | - Jean Felix Mukerabigwi
- Key Laboratory of Pesticide and Chemical Biology (Ministry of Education)
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
| | - Jian Mei
- Key Laboratory of Pesticide and Chemical Biology (Ministry of Education)
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
| | - Yuannian Zhang
- Key Laboratory of Pesticide and Chemical Biology (Ministry of Education)
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
| | - Shufang Wang
- Blood Transfusion Department
- The General Hospital of the People's Liberation Army
- Beijing 100853
- China
| | - Wang Xiao
- Key Laboratory of Pesticide and Chemical Biology (Ministry of Education)
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
| | - Xueying Huang
- Key Laboratory of Pesticide and Chemical Biology (Ministry of Education)
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
| | - Yu Cao
- Key Laboratory of Pesticide and Chemical Biology (Ministry of Education)
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
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30
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Yilmaz E, Yalinca Z, Yahya K, Sirotina U. pH responsive graft copolymers of chitosan. Int J Biol Macromol 2015; 90:68-74. [PMID: 26500176 DOI: 10.1016/j.ijbiomac.2015.10.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 08/27/2015] [Accepted: 10/01/2015] [Indexed: 11/27/2022]
Abstract
Grafting suitable polymers onto chitosan can produce cationic or polyampholyte polymers or hydrogels that are potential smart biomedical materials. Chitosan-graft-[poly(diethylamino)ethyl methacrylate] has been prepared in three different physical forms as linear free chains in solution, chemical gels crosslinked with glutaraldehyde, and poly(diethylamino)ethyl methacrylate] grafted onto chitosan tripolyphosphate gel beads. In addition to chemical structure, the graft copolymers were characterized with respect to their dissolution and swelling behavior in aqueous solution. It has been established that solubility of the products is controlled by the grafting yield. While pH sensitive polymers, which collapse at a given pH value are obtained at lower grafting yields, hydrogels form at higher grafting yields with pH responsive swelling behavior. Glutaraldehyde crosslinked chitosan-graft-[poly(diethylamino)ethyl methacrylate] gels and chitosan tripolyphosphate gel beads grafted with poly[(diethylamino)ethyl methacrylate] exhibit pH sensitive swelling with highest equilibrium swelling capacity at pH=1.2.
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Affiliation(s)
- Elvan Yilmaz
- Department of Chemistry, Eastern Mediterranean University, Famagusta, North Cyprus, Turkey.
| | - Zulal Yalinca
- Department of Chemistry, Eastern Mediterranean University, Famagusta, North Cyprus, Turkey
| | - Kovan Yahya
- Department of Chemistry, Eastern Mediterranean University, Famagusta, North Cyprus, Turkey; Department of Chemistry, College of Sciences, University of Duhok, Duhok, Iraq
| | - Uliana Sirotina
- Department of Chemistry, Eastern Mediterranean University, Famagusta, North Cyprus, Turkey
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31
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The potential role of polymethyl methacrylate as a new packaging material for the implantable medical device in the bladder. BIOMED RESEARCH INTERNATIONAL 2015; 2015:852456. [PMID: 25705692 PMCID: PMC4330953 DOI: 10.1155/2015/852456] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Revised: 11/01/2014] [Accepted: 11/17/2014] [Indexed: 11/30/2022]
Abstract
Polydimethylsiloxane (PDMS) is used in implantable medical devices; however, PDMS is not a completely biocompatible material for electronic medical devices in the bladder. To identify novel biocompatible materials for intravesical implanted medical devices, we evaluated the biocompatibility of polymethyl methacrylate (PMMA) by analyzing changes in the levels of macrophages, macrophage migratory inhibitory factor (MIF), and inflammatory cytokines in the bladder. A ball-shaped metal coated with PMMA or PDMS was implanted into the bladders of rats, and after intravesical implantation, the inflammatory changes induced by the foreign body reaction were evaluated. In the early period after implantation, increased macrophage activity and MIF in the urothelium of the bladder were observed. However, significantly decreased macrophage activity and MIF in the bladder were observed after implantation with PMMA- or PDMS-coated metal in the later period. In addition, significantly decreased inflammatory cytokines such as IL-1β, IL-6, and TNF-α were observed with time. Based on these results, we suggest that MIF plays a role in the foreign body reaction and in the biocompatible packaging with PMMA for the implanted medical devices in the bladder.
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Zhang Y, Wang H, Mukerabigwi JF, Liu M, Luo S, Lei S, Cao Y, Huang X, He H. Self-organized nanoparticle drug delivery systems from a folate-targeted dextran–doxorubicin conjugate loaded with doxorubicin against multidrug resistance. RSC Adv 2015. [DOI: 10.1039/c5ra10341j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
DOX nano-DDSs with the function of both targeting tumors and controlling drug release were prepared which exhibited larger drug releases, higher cytotoxicity against HepG2/DOX cells, improved cellular uptake and decreased side toxicities.
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Affiliation(s)
- Yuannian Zhang
- Key Laboratory of Pesticide and Chemical Biology (Ministry of Education)
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
| | - Haili Wang
- Key Laboratory of Pesticide and Chemical Biology (Ministry of Education)
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
| | - Jean Felix Mukerabigwi
- Key Laboratory of Pesticide and Chemical Biology (Ministry of Education)
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
| | - Min Liu
- Key Laboratory of Pesticide and Chemical Biology (Ministry of Education)
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
| | - Shiying Luo
- Key Laboratory of Pesticide and Chemical Biology (Ministry of Education)
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
| | - Shaojun Lei
- Key Laboratory of Pesticide and Chemical Biology (Ministry of Education)
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
| | - Yu Cao
- Key Laboratory of Pesticide and Chemical Biology (Ministry of Education)
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
| | - Xueying Huang
- Key Laboratory of Pesticide and Chemical Biology (Ministry of Education)
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
| | - Hongxuan He
- National Research Center for Wild Life Born Diseases
- Key Laboratory of Animal Ecology and Conservation Biology
- Institute of Zoology
- Chinese Academy of Sciences
- Beijing 100101
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33
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Zein in controlled drug delivery and tissue engineering. J Control Release 2014; 189:108-22. [PMID: 24993426 DOI: 10.1016/j.jconrel.2014.06.036] [Citation(s) in RCA: 304] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Revised: 06/20/2014] [Accepted: 06/21/2014] [Indexed: 01/10/2023]
Abstract
Controlled delivery of a bioactive to specific organ, cellular and sub-cellular level is a desired feature of a drug carrier system. In order to achieve this goal, formulation scientists search for better alternatives of biomaterials to deliver the therapeutics in more precise and controlled manner in vivo. Zein, a plant protein obtained from corn, is a useful biomaterial for several industrial applications including agriculture, cosmetics, packaging and pharmaceuticals. Being a hydrophobic protein, which is biodegradable, biocompatible, economic to use and with generally regarded safe "GRAS" status, it is an attractive biomaterial for human use. Novel biomedical applications of zein such as controlled and targeted delivery of bioactives and tissue engineering are the current research interests of the scientific fraternity. Here we attempt to review the literature on zein as a biopolymer for drug/vaccine/gene delivery and its applicability in tissue engineering.
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34
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Khisamutdinov EF, Jasinski DL, Guo P. RNA as a boiling-resistant anionic polymer material to build robust structures with defined shape and stoichiometry. ACS NANO 2014; 8:4771-81. [PMID: 24694194 PMCID: PMC4046798 DOI: 10.1021/nn5006254] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Accepted: 03/25/2014] [Indexed: 05/22/2023]
Abstract
RNA is a polyribonucleic acid belonging to a special class of anionic polymers, holding a unique property of self-assembly that is controllable in the construction of structures with defined size, shape, and stoichiometry. We report here the use of RNA as polymers to fabricate boiling-resistant triangular nanoscaffolds, which were used to construct hexagons and patterned hexagonal arrays. The RNA triangular scaffolds demonstrated promising potential to construct fluorogenic probes and therapeutic agents as functionalization with siRNA, ribozyme, folate, and fluorogenic RNA aptamers revealed independent functional activity of each RNA moiety. The ribozyme was able to cleave hepatitis genomic RNA fragments, the siRNA silenced the target genes, and all fluorogenic RNA aptamers retained their fluorescence emission property. The creation of boiling-temperature-resistant RNA nanoparticles opens a new dimension of RNA as a special polymer, feasible in industrial and nanotechnological applications.
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