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Alsulami KA, Bakr AA, Alshehri AA, Aodah AH, Almughem FA, Alamer AA, Alharbi LA, Alsuwayeh DS, Halwani AA, Alamoudi AA, Alfassam HA, Tawfik EA. Fabrication and evaluation of ribavirin-loaded electrospun nanofibers as an antimicrobial wound dressing. Saudi Pharm J 2024; 32:102058. [PMID: 38601973 PMCID: PMC11004991 DOI: 10.1016/j.jsps.2024.102058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Accepted: 03/31/2024] [Indexed: 04/12/2024] Open
Abstract
Background Skin is regarded as an essential first line of defense against harmful pathogens and it hosts an ecosystem of microorganisms that create a widely diverse skin microbiome. In chronic wounds, alterations in the host-microbe interactions occur forming polymicrobial biofilms that hinder the process of wound healing. Ribavirin, an antiviral drug, possesses antimicrobial activity, especially against Pseudomonas aeruginosa and Candida albicans, which are known as the main opportunistic pathogens in chronic wounds. Rationale In this study, electrospun nanofiber systems loaded with ribavirin were developed as a potential wound dressing for topical application in chronic wounds. Ribavirin was chosen in this study owing to the emerging cases of antimicrobial (antibiotics and antifungal) resistance and the low attempts to discover new antimicrobial agents, which encouraged the repurposing use of current medication as an alternative solution in case of resistance to the available agents. Additionally, the unique mechanism of action of ribavirin, i.e., perturbing the bacterial virulence system without killing or stopping their growth and rendering the pathogens disarmed, might be a promising choice to prevent drug resistance. Cyclodextrin (CD) was utilized to formulate ribavirin as an electrospun nanofibers delivery system to enhance the absorption and accelerate the release of ribavirin for topical use. Results The results demonstrated a successful ribavirin nanofibers fabrication that lacked beads and pores on the nanofibrous surfaces. Ribavirin underwent a physical transformation from crystalline to amorphous form, as confirmed by X-ray diffraction analysis. This change occurred due to the molecular dispersion after the electrospinning process. Additionally, the CD enhanced the encapsulation efficiency of ribavirin in the nanofibers as observed from the drug-loading results. Polyvinylpyrrolidone (PVP) and CD increased ribavirin released into the solution and the disintegration of fibrous mats which shrank and eventually dissolved into a gel-like substance as the ribavirin-loaded fibers began to break down from their border toward the midpoint. Cytotoxicity of ribavirin and CD was evaluated against human dermal fibroblasts (HFF-1) and the results showed a relatively safe profile of ribavirin upon 24-hour cell exposure, while CD was safe within 24- and 48-hour. Conclusion This study provides valuable insights into the potential application of our nanofibrous system for treating chronic wounds; however, further antimicrobial and in-vivo studies are required to confirm its safety and effectiveness.
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Affiliation(s)
- Khulud A. Alsulami
- Advanced Diagnostics and Therapeutics Institute, Health Sector, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia
| | - Abrar A. Bakr
- Advanced Diagnostics and Therapeutics Institute, Health Sector, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia
| | - Abdullah A. Alshehri
- Advanced Diagnostics and Therapeutics Institute, Health Sector, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia
| | - Alhassan H. Aodah
- Advanced Diagnostics and Therapeutics Institute, Health Sector, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia
| | - Fahad A. Almughem
- Advanced Diagnostics and Therapeutics Institute, Health Sector, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia
| | - Ali A. Alamer
- Advanced Diagnostics and Therapeutics Institute, Health Sector, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia
| | - Lujain A. Alharbi
- Advanced Diagnostics and Therapeutics Institute, Health Sector, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia
| | - Deema S. Alsuwayeh
- Advanced Diagnostics and Therapeutics Institute, Health Sector, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia
| | - Abdulrahman A. Halwani
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Abdullah A. Alamoudi
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Haya A. Alfassam
- Advanced Diagnostics and Therapeutics Institute, Health Sector, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia
| | - Essam A. Tawfik
- Advanced Diagnostics and Therapeutics Institute, Health Sector, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia
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Rusdin A, Mohd Gazzali A, Ain Thomas N, Megantara S, Aulifa DL, Budiman A, Muchtaridi M. Advancing Drug Delivery Paradigms: Polyvinyl Pyrolidone (PVP)-Based Amorphous Solid Dispersion for Enhanced Physicochemical Properties and Therapeutic Efficacy. Polymers (Basel) 2024; 16:286. [PMID: 38276694 PMCID: PMC10820039 DOI: 10.3390/polym16020286] [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: 11/28/2023] [Revised: 01/08/2024] [Accepted: 01/10/2024] [Indexed: 01/27/2024] Open
Abstract
BACKGROUND The current challenge in drug development lies in addressing the physicochemical issues that lead to low drug effectiveness. Solubility, a crucial physicochemical parameter, greatly influences various biopharmaceutical aspects of a drug, including dissolution rate, absorption, and bioavailability. Amorphous solid dispersion (ASD) has emerged as a widely explored approach to enhance drug solubility. OBJECTIVE The objective of this review is to discuss and summarize the development of polyvinylpyrrolidone (PVP)-based amorphous solid dispersion in improving the physicochemical properties of drugs, with a focus on the use of PVP as a novel approach. METHODOLOGY This review was conducted by examining relevant journals obtained from databases such as Scopus, PubMed, and Google Scholar, since 2018. The inclusion and exclusion criteria were applied to select suitable articles. RESULTS This study demonstrated the versatility and efficacy of PVP in enhancing the solubility and bioavailability of poorly soluble drugs. Diverse preparation methods, including solvent evaporation, melt quenching, electrospinning, coprecipitation, and ball milling are discussed for the production of ASDs with tailored characteristics. CONCLUSION PVP-based ASDs could offer significant advantages in the formulation strategies, stability, and performance of poorly soluble drugs to enhance their overall bioavailability. The diverse methodologies and findings presented in this review will pave the way for further advancements in the development of effective and tailored amorphous solid dispersions.
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Affiliation(s)
- Agus Rusdin
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjadjaran, Jl. Raya Bandung-Sumedang Km-21, Bandung 45363, Indonesia; (A.R.); (S.M.); (D.L.A.)
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjadjaran, Jl. Raya Bandung-Sumedang Km-21, Bandung 45363, Indonesia;
| | - Amirah Mohd Gazzali
- Departement Pharmaceutical Technology, School of Pharmaceutical Sciences, Universiti Sains Malaysia, P.Penang, Penang 11800, Malaysia;
| | - Nur Ain Thomas
- Department of Pharmacy, Faculty of Sport and Health, Universitas Negeri Gorontalo, Jl. Jenderal Sudirman No. 6, Gorontalo 96128, Indonesia;
| | - Sandra Megantara
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjadjaran, Jl. Raya Bandung-Sumedang Km-21, Bandung 45363, Indonesia; (A.R.); (S.M.); (D.L.A.)
- Research Collaboration Centre for Theranostic Radiopharmaceuticals, National Research and Innovation Agency (BRIN), Jakarta Pusat 10340, Indonesia
| | - Diah Lia Aulifa
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjadjaran, Jl. Raya Bandung-Sumedang Km-21, Bandung 45363, Indonesia; (A.R.); (S.M.); (D.L.A.)
| | - Arif Budiman
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjadjaran, Jl. Raya Bandung-Sumedang Km-21, Bandung 45363, Indonesia;
| | - Muchtaridi Muchtaridi
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjadjaran, Jl. Raya Bandung-Sumedang Km-21, Bandung 45363, Indonesia; (A.R.); (S.M.); (D.L.A.)
- Research Collaboration Centre for Theranostic Radiopharmaceuticals, National Research and Innovation Agency (BRIN), Jakarta Pusat 10340, Indonesia
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Ermis S, Kaya K, Topuz F, Yagci Y. In-Situ and Green Photosynthesis of PVP-Stabilized Palladium Nanoparticles as Efficient Catalysts for the Reduction of 4-Nitrophenol. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
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Formulation Development of Fast Dissolving Microneedles Loaded with Cubosomes of Febuxostat: In Vitro and In Vivo Evaluation. Pharmaceutics 2023; 15:pharmaceutics15010224. [PMID: 36678853 PMCID: PMC9863705 DOI: 10.3390/pharmaceutics15010224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 01/03/2023] [Accepted: 01/04/2023] [Indexed: 01/12/2023] Open
Abstract
Febuxostat is a widely prescribed drug for the treatment of gout, which is a highly prevalent disease worldwide and is a major cause of disability in mankind. Febuxostat suffers from several limitations such as gastrointestinal disturbances and low oral bioavailability. Thus, to improve patient compliance and bioavailability, transdermal drug delivery systems of Febuxostat were developed for obtaining enhanced permeation. Cubosomes of Febuxostat were prepared using a bottom-up approach and loaded into a microneedle using a micromolding technique to achieve better permeation through the skin. Optimization of the process and formulation parameters were achieved using our design of experiments. The optimized cubosomes of Febuxostat were characterized for various parameters such as % entrapment efficiency, vesicle size, Polydispersity index, Transmission electron microscopy, in vitro drug release, Small angle X-ray scattering, etc. After loading it in the microneedle it was characterized for dissolution time, axial fracture force, scanning electron microscopy, in vitro drug release, pore closure kinetics, etc. It was also evaluated for various ex vivo characterizations such as in vitro cell viability, ex vivo permeation, ex vivo fluorescence microscopy and histopathology which indicates its safety and better permeation. In vivo pharmacokinetic studies proved enhanced bioavailability compared with the marketed formulation. Pharmacodynamic study indicated its effectiveness in a disease-induced rat model. The developed formulations were then subjected to the stability study, which proved its stability.
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Bardoula V, Leclercq L, Hoogenboom R, Nardello-Rataj V. Amphiphilic nonionic block and gradient copoly(2-oxazoline)s based on 2-methyl-2-oxazoline and 2-phenyl-2-oxazoline as efficient stabilizers for the formulation of tailor-made emulsions. J Colloid Interface Sci 2022; 632:223-236. [DOI: 10.1016/j.jcis.2022.11.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 10/31/2022] [Accepted: 11/05/2022] [Indexed: 11/10/2022]
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Sakpal D, Gharat S, Momin M. Recent advancements in polymeric nanofibers for ophthalmic drug delivery and ophthalmic tissue engineering. BIOMATERIALS ADVANCES 2022; 141:213124. [PMID: 36148709 DOI: 10.1016/j.bioadv.2022.213124] [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: 05/23/2022] [Revised: 09/10/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
Nanofibers due to their unique properties such as high surface-to-volume ratio, porous structure, mechanical strength, flexibility and their resemblance to the extracellular matrix, have been researched extensively in the field of ocular drug delivery and tissue engineering. Further, different modifications considering the formulation and process parameters have been carried out to alter the drug release profile and its interaction with the surrounding biological environment. Electrospinning is the most commonly used technique for preparing nanofibers with industrial scalability. Advanced techniques such as co-axial electrospinning and combined system such as embedding nanoparticles in nanofiber provide an alternative approach to enhance the performance of the scaffold. Electrospun nanofibers offers a matrix like structure for cell regeneration. Nanofibers have been used for ocular delivery of various drugs like antibiotics, anti-inflammatory and various proteins. In addition, lens-coated medical devices provide new insights into the clinical use of nanofibers. Through fabricating the nanofibers researchers have overcome the issues of low bioavailability and compatibility with ocular tissue. Therefore, nanofibers have great potential in ocular drug delivery and tissue engineering and have the capacity to revolutionize these therapeutic areas in the field of ophthalmology. This review is mainly focused on the recent advances in the preparation of nanofibers and their applications in ocular drug delivery and tissue engineering. The authors have attempted to emphasize the processing challenges and future perspectives along with an overview of the safety and toxicity aspects of nanofibers.
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Affiliation(s)
- Darshana Sakpal
- Department of Pharmaceutics, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, University of Mumbai, Maharashtra, India.
| | - Sankalp Gharat
- Department of Pharmaceutics, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, University of Mumbai, Maharashtra, India.
| | - Munira Momin
- Department of Pharmaceutics, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, University of Mumbai, Maharashtra, India; SVKM's Shri C B Patel Research Center for Chemistry and Biological Sciences, Mumbai, Maharashtra, India.
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7
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Contardi M, Ayyoub AMM, Summa M, Kossyvaki D, Fadda M, Liessi N, Armirotti A, Fragouli D, Bertorelli R, Athanassiou A. Self-Adhesive and Antioxidant Poly(vinylpyrrolidone)/Alginate-Based Bilayer Films Loaded with Malva sylvestris Extracts as Potential Skin Dressings. ACS APPLIED BIO MATERIALS 2022; 5:2880-2893. [PMID: 35583459 PMCID: PMC9214765 DOI: 10.1021/acsabm.2c00254] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Malva sylvestris (MS) is a medicinal herb known worldwide for its beneficial effects due to the several active molecules present in its leaves and flowers. These compounds have shown antioxidant and anti-inflammatory properties and thus can be helpful in treatments of burns and chronic wounds, characterized mainly by high levels of free radicals and impairments of the inflammatory response. In this work, we propose bilayer films as wound dressings, based on poly(vinylpyrrolidone) (PVP) and sodium alginate loaded with M. sylvestris extracts from leaves and flowers and fabricated by combining solvent-casting and rod-coating methods. The top layer is produced in two different PVP/alginate ratios and loaded with the MS flowers' extract, while the bottom layer is composed of PVP and MS leaves' extract. The bilayers were characterized morphologically, chemically, and mechanically, while they showed superior self-adhesive properties on human skin compared to a commercial skin patch. The materials showed antioxidant activity, release of the bioactive compounds, and water uptake property. Moreover, the anthocyanin content of the flower extract provided the films with the ability to change color when immersed in buffers of different pH levels. In vitro tests using primary keratinocytes demonstrated the biocompatibility of the MS bilayer materials and their capacity to enhance the proliferation of the cells in a wound scratch model. Finally, the best performing MS bilayer sample with a PVP/alginate ratio of 70:30 was evaluated in mice models, showing suitable resorption properties and the capacity to reduce the level of inflammatory mediators in UVB-induced burns when applied to an open wound. These outcomes suggest that the fabricated bilayer films loaded with M. sylvestris extracts are promising formulations as active and multifunctional dressings for treating skin disorders.
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Affiliation(s)
- Marco Contardi
- Smart Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Amin Mah'd Moh'd Ayyoub
- Smart Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy.,Dipartimento di Informatica Bioingegneria, Robotica e Ingegneria dei Sistemi (DIBRIS), Università degli studi di Genova, Via Opera Pia 13, 16145 Genova, Italy
| | - Maria Summa
- Translational Pharmacology, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Despoina Kossyvaki
- Smart Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy.,Dipartimento di Informatica Bioingegneria, Robotica e Ingegneria dei Sistemi (DIBRIS), Università degli studi di Genova, Via Opera Pia 13, 16145 Genova, Italy
| | - Marta Fadda
- Smart Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy.,Dipartimento di Informatica Bioingegneria, Robotica e Ingegneria dei Sistemi (DIBRIS), Università degli studi di Genova, Via Opera Pia 13, 16145 Genova, Italy
| | - Nara Liessi
- Analytical Chemistry Facility, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Andrea Armirotti
- Analytical Chemistry Facility, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Despina Fragouli
- Smart Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Rosalia Bertorelli
- Translational Pharmacology, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
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Mulder D, Taute CJF, van Wyk M, Pretorius PJ. A Comparison of the Genotoxic Effects of Gold Nanoparticles Functionalized with Seven Different Ligands in Cultured Human Hepatocellular Carcinoma Cells. NANOMATERIALS 2022; 12:nano12071126. [PMID: 35407243 PMCID: PMC9000686 DOI: 10.3390/nano12071126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 03/09/2022] [Accepted: 03/18/2022] [Indexed: 11/16/2022]
Abstract
Gold nanoparticles (GNPs) have shown great potential in diagnostic and therapeutic applications in diseases, such as cancer. Despite GNP versatility, there is conflicting data regarding the toxicity of their overall functionalization chemistry for improved biocompatibility. This study aimed to determine the possible genotoxic effects of functionalized GNPs in Human hepatocellular carcinoma (HepG2) cells. GNPs were synthesized and biofunctionalized with seven common molecules used for biomedical applications. These ligands were bovine serum albumin (BSA), poly(sodium 4-styrene sulfonate) (PSSNA), trisodium citrate (citrate), mercaptoundecanoic acid (MUA), glutathione (GSH), polyvinylpyrrolidone (PVP), and polyethylene glycol (PEG). Before in vitro genotoxicity assessment, inductively coupled plasma mass spectrometry was used to determine GNP cellular internalization quantitatively, followed by cell-based assays; WST-1 to find IC 30 and ApoPercentage for apoptotic induction time-points. The effect of the GNPs on cell growth in real-time was determined by using xCELLigence, followed by a comet assay for genotoxicity determination. The HepG2 cells experienced genotoxicity for all GNP ligands; however, they were able to initiate repair mechanisms and recover DNA damage, except for two functionalization chemistries.
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9
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Applicability Evaluation of Soil Algae Pipe Assay in Silver Nanoparticle-Contaminated Soils. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12041890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Due to pervasive and resilient soil contaminants, heterogeneously contaminated soil poses unpredictable potential threats to ecosystems. In this study, the extension of a previously developed soil algae pipe assay for evaluating heterogeneously contaminated soil under an open system is described. The assay can be used in soil that is heterogeneously contaminated with silver nanoparticles in combination with the examination of morphological changes (e.g., in vivo chlorophyll a, cell granularity, cell size, and mucilaginous sheath) and lipid contents. In addition, we attempted to extend the exposure duration under an open system. We evaluated the applicability of this soil algae pipe assay using green alga Chlamydomonas reinhardtii exposed to heterogeneous and homogeneous polyvinylpyrrolidone capping silver nanoparticles in contaminated soils. The results demonstrated that this method is an applicable bioassay that can be employed to better evaluate soil algal toxicity under an open system, with significant changes in the measured endpoints. The developed assay showed decent predictivity, which can be a useful tool when evaluating heterogeneous soil algae contamination.
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PVP/Highly Dispersed AgNPs Nanofibers Using Ultrasonic-Assisted Electrospinning. Polymers (Basel) 2022; 14:polym14030599. [PMID: 35160588 PMCID: PMC8840217 DOI: 10.3390/polym14030599] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 01/28/2022] [Accepted: 02/01/2022] [Indexed: 02/05/2023] Open
Abstract
Silver nanoparticles (AgNPs) are novel materials with antibacterial, antifungal, and antiviral activities over a wide range. This study aimed to prepare polyvinylpyrrolidone (PVP) electrospinning composites with uniformly distributed AgNPs. In this study, starch-capped ~2 nm primary AgNPs were first synthesized using Atmospheric pressure Pulsed Discharge Plasma (APDP) at AC 10 kV and 10 kHz. Then, 0.6 wt.% AgNPs were mixed into a 10 wt.% PVP ethanol-based polymer solution and coiled through an Ultrasonic-assisted Electrospinning device (US-ES) with a 50 W and 50 kHz ultrasonic generator. At 12 kV and a distance of 10 cm, this work successfully fabricated AgNPs-PVP electrospun fibers. The electrospun products were characterized using Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), High-Resolution TEM (HR-TEM), Fourier Transform Infrared Spectroscopy (FT-IR), X-ray Diffraction (XRD), Thermogravimetric (TG), and X-ray Photoelectron Spectroscopy (XPS) methods.
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11
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Rheological Properties and Its Effect on the Lubrication Mechanism of PVP K30 and PVP 40-50 G as Artificial Synovial Fluids. INVENTIONS 2021. [DOI: 10.3390/inventions6040061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The effect of polyvinylpyrrolidone (PVP) on the rheological properties of joint prostheses is still unclear, despite its good lubricity and biocompatibility. In the present work, PVP K30 and PVP 40-50 G solutions at different concentrations were analyzed for rheological and lubrication properties. The rheological properties of the samples were measured at a shear rate range of 0–1800 s−1 (advanced air bearing rheometer Bohlin Gemini 2 and Plate MCR 72/92 rheometer for PVP30 and PVP 40-50 G, respectively). It was found that both the viscosity and shear stress of the samples reduced with a shear rate increase. PVP 40-50 G/sterile water showed higher viscosity as compared to the PVP K30/sterile water sample at a lower shear rate. However, at a higher shear rate, the PVP K30 sample produced better results. Further numerical study results showed the pressure and molecular viscosity distributions. The inclusion of PVP improved the load caring capacity and hence, it is a promising lubrication additive for artificial joints.
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12
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Rónavári A, Bélteky P, Boka E, Zakupszky D, Igaz N, Szerencsés B, Pfeiffer I, Kónya Z, Kiricsi M. Polyvinyl-Pyrrolidone-Coated Silver Nanoparticles-The Colloidal, Chemical, and Biological Consequences of Steric Stabilization under Biorelevant Conditions. Int J Mol Sci 2021; 22:8673. [PMID: 34445378 PMCID: PMC8395525 DOI: 10.3390/ijms22168673] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/05/2021] [Accepted: 08/09/2021] [Indexed: 11/17/2022] Open
Abstract
(1) Background: Several properties of silver nanoparticles (AgNPs), such as cytotoxic, anticancer, and antimicrobial activities, have been subjects of intense research; however, important aspects such as nanoparticle aggregation are generally neglected, although a decline in colloidal stability leads to a loss of the desired biological activities. Colloidal stability is affected by pH, ionic strength, or a plethora of biomolecules that interact with AgNPs under biorelevant conditions. (2) Methods: As only a few studies have focused on the relationship between aggregation behavior and the biological properties of AgNPs, here, we have systematically evaluated this issue by completing a thorough analysis of sterically (via polyvinyl-pyrrolidone (PVP)) stabilized AgNPs that were subjected to different circumstances. We assessed ultraviolet-visible light absorption, dynamic light scattering, zeta potential measurements, in vitro cell viability, and microdilution assays to screen both colloidal stability as well as bioactivity. (3) Results: The results revealed that although PVP provided outstanding biorelevant colloidal stability, the chemical stability of AgNPs could not be maintained completely with this capping material. (4) Conclusion: These unexpected findings led to the realization that stabilizing materials have more profound importance in association with biorelevant applications of nanomaterials than just being simple colloidal stabilizers.
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Affiliation(s)
- Andrea Rónavári
- Department of Applied and Environmental Chemistry, Faculty of Science and Informatics, University of Szeged, H-6720 Szeged, Hungary; (A.R.); (P.B.); (E.B.); (D.Z.)
| | - Péter Bélteky
- Department of Applied and Environmental Chemistry, Faculty of Science and Informatics, University of Szeged, H-6720 Szeged, Hungary; (A.R.); (P.B.); (E.B.); (D.Z.)
| | - Eszter Boka
- Department of Applied and Environmental Chemistry, Faculty of Science and Informatics, University of Szeged, H-6720 Szeged, Hungary; (A.R.); (P.B.); (E.B.); (D.Z.)
| | - Dalma Zakupszky
- Department of Applied and Environmental Chemistry, Faculty of Science and Informatics, University of Szeged, H-6720 Szeged, Hungary; (A.R.); (P.B.); (E.B.); (D.Z.)
| | - Nóra Igaz
- Department of Biochemistry and Molecular Biology, Faculty of Science and Informatics, University of Szeged, H-6726 Szeged, Hungary; (N.I.); (M.K.)
| | - Bettina Szerencsés
- Department of Microbiology, Faculty of Science and Informatics, University of Szeged, H-6726 Szeged, Hungary; (B.S.); (I.P.)
| | - Ilona Pfeiffer
- Department of Microbiology, Faculty of Science and Informatics, University of Szeged, H-6726 Szeged, Hungary; (B.S.); (I.P.)
| | - Zoltán Kónya
- Department of Applied and Environmental Chemistry, Faculty of Science and Informatics, University of Szeged, H-6720 Szeged, Hungary; (A.R.); (P.B.); (E.B.); (D.Z.)
- MTA-SZTE Reaction Kinetics and Surface Chemistry Research Group, H-6720 Szeged, Hungary
| | - Mónika Kiricsi
- Department of Biochemistry and Molecular Biology, Faculty of Science and Informatics, University of Szeged, H-6726 Szeged, Hungary; (N.I.); (M.K.)
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Kuskov AN, Luss AL, Gritskova IA, Shtilman MI, Motyakin MV, Levina II, Nechaeva AM, Sizova OY, Tsatsakis AM, Mezhuev YO. Kinetics and Mechanism of Synthesis of Carboxyl-Containing N-Vinyl-2-Pyrrolidone Telehelics for Pharmacological Use. Polymers (Basel) 2021; 13:polym13152569. [PMID: 34372172 PMCID: PMC8347008 DOI: 10.3390/polym13152569] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 07/25/2021] [Accepted: 07/28/2021] [Indexed: 12/11/2022] Open
Abstract
It was found that sulfanylethanoic and 3-sulfanylpropanoic acids are effective regulators of molecular weight with chain transfer constants of 0.441 and 0.317, respectively, and show an unexpected acceleration effect on the radical polymerization of N-vinyl-2-pyrrolidone, initiated by 2,2’-azobisisobutyronitrile. It was determined for the first time that the thiolate anions of mercapto acids form a high-temperature redox initiating system with 2,2’-azobisisobutyronitrile during the radical polymerization of N-vinyl-2-pyrrolidone in 1,4-dioxane. Considering the peculiarities of initiation, a kinetic model of the polymerization of N-vinyl-2-pyrrolidone is proposed, and it is shown that the theoretical orders of the reaction rate, with respect to the monomer, initiator, and chain transfer agent, are 1, 0.75, 0.25, and are close to their experimentally determined values. Carboxyl-containing techelics of N-vinyl-2-pyrrolidone were synthesized so that it can slow down the release of the anticancer drug, doxorubicin, from aqueous solutions, which can find its application in the pharmacological field.
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Affiliation(s)
- Andrey N. Kuskov
- Department of Biomaterials, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia; (A.L.L.); (M.I.S.); (A.M.N.); (O.Y.S.)
- Correspondence: (A.N.K.); (Y.O.M.)
| | - Anna L. Luss
- Department of Biomaterials, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia; (A.L.L.); (M.I.S.); (A.M.N.); (O.Y.S.)
| | - Inessa A. Gritskova
- Department of Chemistry and Technology of Macromolecular Compounds, MIREA—Russian Technological University (RTU MIREA), 119454 Moscow, Russia;
| | - Mikhail I. Shtilman
- Department of Biomaterials, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia; (A.L.L.); (M.I.S.); (A.M.N.); (O.Y.S.)
| | - Mikhail V. Motyakin
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 119334 Moscow, Russia; (M.V.M.); (I.I.L.)
- Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Irina I. Levina
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 119334 Moscow, Russia; (M.V.M.); (I.I.L.)
| | - Anna M. Nechaeva
- Department of Biomaterials, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia; (A.L.L.); (M.I.S.); (A.M.N.); (O.Y.S.)
| | - Oksana Yu. Sizova
- Department of Biomaterials, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia; (A.L.L.); (M.I.S.); (A.M.N.); (O.Y.S.)
| | - Aristidis M. Tsatsakis
- Center of Toxicology Science & Research, Division of Morphology, Medical School, Voutes Campus, University of Crete, 71003 Heraklion, Greece;
- Department of Analytical and Forensic Medical Toxicology, Sechenov University, 119991 Moscow, Russia
| | - Yaroslav O. Mezhuev
- Department of Biomaterials, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia; (A.L.L.); (M.I.S.); (A.M.N.); (O.Y.S.)
- Correspondence: (A.N.K.); (Y.O.M.)
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14
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Srivastava PK, Thakkar HP. QbD-driven development of dissolving microneedle patch loaded with ultradeformable liposomes encapsulated Noopept: Exploring a patient friendly, once-daily option to manage dementia. Eur J Pharm Sci 2021; 164:105909. [PMID: 34126240 DOI: 10.1016/j.ejps.2021.105909] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 05/19/2021] [Accepted: 06/08/2021] [Indexed: 10/21/2022]
Abstract
Noopept (NPT), a potent neuroprotective agent, suffers the problem of poor oral bioavailability (~10%) and thus demands exploration of ways of bioavailability improvement. Present work focuses on confronting this issue via development of NPT loaded ultradeformable liposomes (UDL) and its further incorporation in fast dissolving microneedle patch (MNP) for transdermal route. A combination of Phospholipon 90 G and Phospholipon 90H was used as bilayer forming lipids while sodium deoxycholate was used as edge activator to formulate NPT UDL by ethanol injection method. QbD approach was adapted to optimize NPT UDL considering vesicle size and entrapment efficiency as critical quality attributes (CQA). Fractional factorial design established amount of lipids, surfactant and NPT as critical material attributes and their optimum levels were statistically derived using combined D-optimal design. These optimized NPT UDL were fabricated as fast dissolving MNP and exhaustively evaluated to establish their safety, efficacy and stability. NPT UDL MNP possessed axial needle fracture force of 0.688 N which was sufficient enough to breach stratum corneum. Physical stability evaluation revealed that NPT UDL re-dispersion obtained from MNP matrix dissolution possessed identical vesicle shape and size while retaining > 99% NPT when compared to optimized NPT UDL. In vitro viability of HaCaT cells after exposure to NPT UDL MNP matrix was found to be 89.74% supporting the formulation as safe for transdermal application. NPT UDL MNP showed a 6.5-fold increase in steady state flux across full thickness pig ear skin as compared to NPT suspension. A 3-fold increase in relative bioavailability with similar pharmacological response as compared to oral NPT suspension was also observed during PK-PD studies in Sprague Dawley rats. Results were found fairly encouraging and created a scope of reducing both dose and dosing frequency to eventually improve the associated patient compliance.
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Affiliation(s)
- Praveen K Srivastava
- Shri G.H. Patel Pharmacy Building, Faculty of Pharmacy, The Maharaja Sayajirao University of Baroda, Fatehgunj, Vadodara 390 002, Gujarat, India
| | - Hetal P Thakkar
- Shri G.H. Patel Pharmacy Building, Faculty of Pharmacy, The Maharaja Sayajirao University of Baroda, Fatehgunj, Vadodara 390 002, Gujarat, India.
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15
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Lee HI, Rhim WK, Kang EY, Choi B, Kim JH, Han DK. A Multilayer Functionalized Drug-Eluting Balloon for Treatment of Coronary Artery Disease. Pharmaceutics 2021; 13:614. [PMID: 33922861 PMCID: PMC8146216 DOI: 10.3390/pharmaceutics13050614] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/15/2021] [Accepted: 04/19/2021] [Indexed: 12/22/2022] Open
Abstract
Drug-eluting balloons (DEBs) have been mostly exploited as an interventional remedy for treating atherosclerosis instead of cardiovascular stents. However, the therapeutic efficacy of DEB is limited due to their low drug delivery capability to the disease site. The aim of our study was to load drugs onto a balloon catheter with preventing drug loss during transition time and maximizing drug transfer from the surface of DEBs to the cardiovascular wall. For this, a multilayer-coated balloon catheter, composed of PVP/Drug-loaded liposome/PVP, was suggested. The hydrophilic property of 1st layer, PVP, helps to separate drug layer in hydrophilic blood vessel, and the 2nd layer with Everolimus (EVL)-loaded liposome facilitates drug encapsulation and sustained release to the targeted lesions during inflation time. Additionally, a 3rd layer with PVP can protect the inner layer during transition time for preventing drug loss. The deionized water containing 20% ethanol was utilized to hydrate EVL-loaded liposome for efficient coating processes. The coating materials showed negligible toxicity in the cells and did not induce pro-inflammatory cytokine in human coronary artery smooth muscle cells (HCASMCs), even in case of inflammation induction through LPS. The results of hemocompatibility for coating materials exhibited that protein adsorption and platelet adhesion somewhat decreased with multilayer-coated materials as compared to bare Nylon tubes. The ex vivo experiments to confirm the feasibility of further applications of multilayer-coated strategy as a DEB system demonstrated efficient drug transfer of approximately 65% in the presence of the 1st layer, to the tissue in 60 s after treatment. Taken together, a functional DEB platform with such a multilayer coating approach would be widely utilized for percutaneous coronary intervention (PCI).
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Affiliation(s)
| | | | | | | | | | - Dong-Keun Han
- Department of Biomedical Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam 13488, Gyenggi, Korea; (H.-I.L.); (W.-K.R.); (E.-Y.K.); (B.C.); (J.-H.K.)
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16
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Arshad MS, Zahra AT, Zafar S, Zaman H, Akhtar A, Ayaz MM, Kucuk I, Maniruzzaman M, Chang MW, Ahmad Z. Antibiofilm Effects of Macrolide Loaded Microneedle Patches: Prospects in Healing Infected Wounds. Pharm Res 2021; 38:165-177. [PMID: 33534130 DOI: 10.1007/s11095-021-02995-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 11/05/2020] [Indexed: 11/26/2022]
Abstract
AIM The aim of this study was to fabricate polymeric microneedles, loaded with macrolides (erythromycin, azithromycin), using hyaluronic acid and polyvinyl pyrollidone. METHODS These microneedles were fabricated using a vacuum micromolding technique. The integrity of the microneedle patches was studied by recording their morphologic features, folding endurance, swelling and micro-piercing. Physicochemical characteristics were studied by differential scanning calorimetry, thermogravimetric analysis and fourier transform infrared spectroscopy. In-vitro drug release, antibiofilm and effect of microneedle patch on wound healing were also studied to confirm the efficacy of the formulations. RESULTS Formulated patches displayed acceptable folding endurance (>100) and uniform distribution of microneedles (10 × 10) that can penetrate parafilm. Differential scanning calorimetry results depict a decrease in the crystallinity of macrolides following their incorporation in to a polymer matrix. Percentage release of azithromycin and erythromycin from the polymeric patch formulations (over 30 min) was 90% and 63% respectively. Broadly, the zone of bacterial growth inhibition follows the same order for Staphylococcus aureus, Escherichia coli and Salmonella enterica. After 5 days of treatment with azithromycin patches, the wound healing was complete and skin structure (e.g. hair follicles and dermis) was regenerated. CONCLUSION It was concluded that azithromycin loaded microneedle patches can be used to treat biofilms in the infected wounds.
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Affiliation(s)
| | | | - Saman Zafar
- Faculty of Pharmacy, Bahauddin Zakariya University, Multan, Pakistan
| | - Hussain Zaman
- Leicester School of Pharmacy, De Montfort University, Leicester, UK
| | - Ambreen Akhtar
- Leicester School of Pharmacy, De Montfort University, Leicester, UK
| | - Muhammad Mazhar Ayaz
- Department of Parasitology, Cholistan University of Veterinary and Animal Sciences, Bahawalpur, Pakistan
| | - Israfil Kucuk
- Institute of Nanotechnology, Gebze Technical University, Gebze, Turkey
| | - Mohammed Maniruzzaman
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, University of Texas at Austin, Austin, Texas, USA
| | - Ming-Wei Chang
- Nanotechnology and Integrated Bioengineering Centre, University of Ulster, Newtownabbey, Belfast, Northern Ireland, UK
| | - Zeeshan Ahmad
- Leicester School of Pharmacy, De Montfort University, Leicester, UK.
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17
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Kim SH, Kim MY. A case of anaphylaxis presumably caused by a trace amount of povidone in a tablet pill. ALLERGY ASTHMA & RESPIRATORY DISEASE 2021. [DOI: 10.4168/aard.2021.9.2.99] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Sung Hyun Kim
- Division of Pulmonology and Allery, Department of Inter Medicine, Inje University Busan Paik Hospital, Inje University College of Medicine, Busan, Korea
| | - Mi-Yeong Kim
- Division of Pulmonology and Allery, Department of Inter Medicine, Inje University Busan Paik Hospital, Inje University College of Medicine, Busan, Korea
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18
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Stathis C, Victoria N, Loomis K, Nguyen SA, Eggers M, Septimus E, Safdar N. Review of the use of nasal and oral antiseptics during a global pandemic. Future Microbiol 2021; 16:119-130. [PMID: 33464122 PMCID: PMC7842245 DOI: 10.2217/fmb-2020-0286] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 12/16/2020] [Indexed: 12/20/2022] Open
Abstract
A review of nasal sprays and gargles with antiviral properties suggests that a number of commonly used antiseptics including povidone-iodine, Listerine®, iota-carrageenan and chlorhexidine should be studied in clinical trials to mitigate both the progression and transmission of SARS-CoV-2. Several of these antiseptics have demonstrated the ability to cut the viral load of SARS-CoV-2 by 3-4 log10 in 15-30 s in vitro. In addition, hypertonic saline targets viral replication by increasing hypochlorous acid inside the cell. A number of clinical trials are in process to study these interventions both for prevention of transmission, prophylaxis after exposure, and to diminish progression by reduction of viral load in the early stages of infection.
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Affiliation(s)
| | | | | | - Shaun A Nguyen
- Department of Otolaryngology, Head & Neck Surgery, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Maren Eggers
- Prof Dr G Enders MVZ Laboratory & Institute of Virology, Infectious Diseases, Stuttgart, BW 70193, Germany
| | - Edward Septimus
- Department of Population Medicine, Harvard Medical School & the Harvard Pilgrim Healthcare Institute, Boston, MA 02215, USA
| | - Nasia Safdar
- Division of Infectious Disease, Department of Medicine, University of Wisconsin School of Medicine & Public Health, Madison, WI, USA & The William S Middleton Memorial Veterans Hospital, Madison, WI 53726, USA
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19
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Park JS, Kim S, Lee J, Choi JC, Kim Y, Park CW, Lee S. Preliminary bioequivalence of an oral integrating film formulation containing meloxicam with a suspension formulation in beagle dogs. J Vet Pharmacol Ther 2020; 44:342-348. [PMID: 33295645 DOI: 10.1111/jvp.12940] [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: 11/18/2020] [Accepted: 11/25/2020] [Indexed: 11/28/2022]
Abstract
The oral disintegrating film (ODF) has advantages over suspension and tablet. These include convenience of administration, patient compliance, and accurate dosing. We evaluated the bioequivalence between the ODF and the meloxicam suspension by using a crossover design with a 3-week washout period. Six healthy male beagle dogs were randomized to receive both formulations of meloxicam, 2 mg. Plasma meloxicam concentrations were measured at the same times. From the start until maximum concentration, the initial absorption of the ODF meloxicam formulation was more rapid (2.08 ± 1.56 hr) as compared to the suspension (3.33 ± 1.03 hr). Mean elimination half-lives were 28.77 ± 4.01 and 32.85 ± 9.79 hr for the ODF and the suspension, respectively. Bioequivalence of the ODF was confirmed, based on the relative ratios of geometric mean concentrations (and 90% confidence intervals within the range of 80%-125%) for a maximum concentration of 101.05% (88.59-115.25), for the area under the plasma concentration-time curve (AUC) to the last sampling time of 96.07% (87.06-115.25), and for AUC to infinity of 92.65% (86.76-98.94). The meloxicam ODF may be used as an alternative to suspension formulations in the treatment of inflammatory joint diseases and painful musculoskeletal disorders.
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Affiliation(s)
- Jong-Shik Park
- Medical Device Development Center, Osong Medical Innovation Foundation, Cheongju-si, Korea.,College of Veterinary Medicine, Chungbuk National University, Cheongju-si, Korea
| | - Sungmin Kim
- New Drug Development Center, Osong Medical Innovation Foundation, Cheongju-si, Korea.,College of Pharmacy, Chungbuk National University, Cheongju-si, Korea
| | - Jaeyeon Lee
- New Drug Development Center, Osong Medical Innovation Foundation, Cheongju-si, Korea.,College of Pharmacy, Chungnam National University, Daejeon, Korea
| | - Jae-Cheol Choi
- College of Pharmacy, Chungbuk National University, Cheongju-si, Korea
| | - YoungAh Kim
- Korea Bioprocessing Training Center, Osong Medical Innovation Foundation, Cheongju-si, Korea
| | - Chun-Woong Park
- College of Pharmacy, Chungbuk National University, Cheongju-si, Korea
| | - Soohan Lee
- Laboratory Animal Center, Osong Medical Innovation Foundation, Cheongju-si, Korea
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20
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Kurakula M, Rao GSNK. Pharmaceutical assessment of polyvinylpyrrolidone (PVP): As excipient from conventional to controlled delivery systems with a spotlight on COVID-19 inhibition. J Drug Deliv Sci Technol 2020; 60:102046. [PMID: 32905026 PMCID: PMC7462970 DOI: 10.1016/j.jddst.2020.102046] [Citation(s) in RCA: 136] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 08/04/2020] [Accepted: 08/25/2020] [Indexed: 12/14/2022]
Abstract
Polyvinylpyrrolidone (PVP) is a water-soluble polymer obtained by polymerization of monomer N-vinylpyrrolidone. PVP is an inert, non-toxic, temperature-resistant, pH-stable, biocompatible, biodegradable polymer that helps to encapsulate and cater both hydrophilic and lipophilic drugs. These advantages enable PVP a versatile excipient in the formulation development of broad conventional to novel controlled delivery systems. PVP has tunable properties and can be used as a brace component for gene delivery, orthopedic implants, and tissue engineering applications. Based on different molecular weights and modified forms, PVP can lead to exceptional beneficial features with varying chemical properties. Graft copolymerization and other techniques assist PVP to conjugate with poorly soluble drugs that can inflate bioavailability and even introduces the desired swelling tract for their control or sustained release. The present review provides chemistry, mechanical, physicochemical properties, evaluation parameters, dewy preparation methods of PVP derivatives intended for designing conventional to controlled systems for drug, gene, and cosmetic delivery. The past and growing interest in PVP establishes it as a promising polymer to enhance the trait and performance of current generation pharmaceutical dosage forms. Furthermore, the scrutiny explores existing patents, marketed products, new and futuristic approaches of PVP that have been identified and scope for future development, characterization, and its use. The exploration spotlights the importance and role of PVP in the design of Povidone-iodine (PVP-I) and clinical trials to assess therapeutic efficacy against the COVID-19 in the current pandemic scenario.
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Affiliation(s)
- Mallesh Kurakula
- Department of Biomedical Engineering, The University of Memphis, Memphis, TN 38152, USA
| | - G S N Koteswara Rao
- College of Pharmacy, Koneru Lakshmaiah Education Foundation, Vaddeswaram, AP, 522502, India
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21
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Santos PDDF, Coqueiro A, Brum EDS, Oliveira SM, Leimann FV, Ineu RP, Bona E, Gonçalves OH. Endogenous antioxidant properties of curcuminoids from Curcuma longa L. obtained by a single-step extraction/nanoencapsulation approach. J Food Biochem 2020; 44:e13531. [PMID: 33084103 DOI: 10.1111/jfbc.13531] [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: 07/28/2020] [Revised: 09/22/2020] [Accepted: 09/28/2020] [Indexed: 11/28/2022]
Abstract
Curcuminoids found in turmeric have attracted attention due to their remarkable biological activity. Nanoencapsulation may improve their technological properties, but extraction and encapsulation procedures could be time-consuming and expensive when carried out separately. This work aimed to combine extraction and nanoencapsulation steps to obtain curcuminoids-polyvinylpyrrolidone (PVP) nanoparticles directly from plant rhizomes. This single-step procedure was evaluated by a Rotatable Central Composite Design (RCCD) and optimized using desirability functions, resulting in the optimal conditions of temperature (29.9°C), ethanol (99%), and PVP (15.38 mg). Nanoencapsulation allowed curcuminoids to exert scavenging activity against superoxide anions donors and hydrogen peroxide in an aqueous medium, despite their poor water solubility. Curcuminoids-PVP nanoparticles could be used to formulate nutraceutical foods as an adjuvant to the endogenous antioxidant defense systems protecting against cellular damage. PRACTICAL APPLICATION: Simultaneous extraction and nanoencapsulation of curcuminoids from turmeric (Curcuma longa L.) was studied in this work. The combination of two processes in one single step reduces production time and costs, enhancing the feasibility of curcuminoids microparticles application into foodstuff. Moreover, since most foodstuff presents water in their composition, increase of curcuminoids water dispersibility could facilitate their incorporation into food matrices and improve the use of their health benefits, as results from this research demonstrated that encapsulated curcuminoids were able to scavenge reactive oxygen species in aqueous medium, even though they are lipophilic compounds.
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Affiliation(s)
| | - Aline Coqueiro
- Post-Graduation Program of Food Technology (PPGTA), Federal University of Technology - Paraná (UTFPR), Campo Mourão, Brazil
| | - Evelyne da Silva Brum
- Laboratory of Neurotoxicity and Psychopharmacology, Graduate Program in Biological Sciences: Toxicological Biochemistry, Center of Natural and Exact Sciences, Federal University of Santa Maria, Santa Maria, Brazil
| | - Sara Marchesan Oliveira
- Laboratory of Neurotoxicity and Psychopharmacology, Graduate Program in Biological Sciences: Toxicological Biochemistry, Center of Natural and Exact Sciences, Federal University of Santa Maria, Santa Maria, Brazil
| | - Fernanda Vitória Leimann
- Post-Graduation Program of Food Technology (PPGTA), Federal University of Technology - Paraná (UTFPR), Campo Mourão, Brazil
| | - Rafael Porto Ineu
- Post-Graduation Program of Food Technology (PPGTA), Federal University of Technology - Paraná (UTFPR), Campo Mourão, Brazil
| | - Evandro Bona
- Post-Graduation Program of Food Technology (PPGTA), Federal University of Technology - Paraná (UTFPR), Campo Mourão, Brazil
| | - Odinei Hess Gonçalves
- Post-Graduation Program of Food Technology (PPGTA), Federal University of Technology - Paraná (UTFPR), Campo Mourão, Brazil
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22
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Wilts EM, Long TE. Thiol–ene
addition enables tailored synthesis of poly(2‐oxazoline)‐
graft
‐poly(vinyl pyrrolidone) copolymers for binder jetting
3D
printing. POLYM INT 2020. [DOI: 10.1002/pi.6074] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Emily M Wilts
- Department of Chemistry Macromolecules Innovation Institute Blacksburg VA USA
| | - Timothy E Long
- Department of Chemistry Macromolecules Innovation Institute Blacksburg VA USA
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23
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Pukfukdee P, Banlunara W, Rutwaree T, Limcharoen B, Sawutdeechaikul P, Pattarakankul T, Sansureerungsikul T, Toprangkobsin P, Leelahavanichkul A, Panchaprateep R, Asawanonda P, Palaga T, Wanichwecharungruang S. Solid Composite Material for Delivering Viable Cells into Skin Tissues via Detachable Dissolvable Microneedles. ACS APPLIED BIO MATERIALS 2020; 3:4581-4589. [PMID: 35025457 DOI: 10.1021/acsabm.0c00498] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Delivering cells to desired locations in the body is needed for disease treatments, tissue repairs, and various scientific investigations such as animal models for drug development. Here, we report the solid composite material that when embedded with viable cells, can temporarily keep cells alive. Using the material, we also show the fabrication of detachable dissolvable microneedles (DMNs) that can instantly deliver viable cells into skin tissue. B16-F10-murine-melanoma (B16-F10) and human-embryonic-kidney-293T (HEK293T) cells embedded in the solid matrix of the hyaluronic/polyvinylpyrolidone/maltose (HA/PVP/maltose) mixture show 50.6 ± 12.0 and 71.0 ± 5.96% survivals, respectively, when kept at 4 °C for 24 h. Detachable DMNs made of the HA/PVP/maltose mixture and loaded with B16-F10-cells were constructed, and the obtained DMN patches could detach the cell-loaded needles into the skin within 1 min of patch application. In vivo intradermal tumorgrafting mice with the DMNs containing 800 cells of B16-F10 developed tumors 10 times bigger in volume than tumors induced by hypodermic needle injection of suspension containing 100,000 cells. We anticipate this work to be a starting point for viable cell encapsulation in the solid matrix and viable cell delivery via DMNs.
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Affiliation(s)
- Puttikorn Pukfukdee
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Wijit Banlunara
- Department of Pathology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Teeranut Rutwaree
- Mineed Technology, 141-145 Innovation Cluster 2, Thailand Science Park, Pathumthani 12120 Thailand
| | - Benchaphorn Limcharoen
- Department of Anatomy, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand
| | | | - Thitiporn Pattarakankul
- Center of Excellence in Advanced Materials and Bio-Interfaces, Chulalongkorn University, Bangkok 10330, Thailand
| | | | - Pattrawadee Toprangkobsin
- Nanotec-CU Center of Excellence on Food and Agriculture, Department of Chemistry, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok 10330, Thailand
| | - Asada Leelahavanichkul
- Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
| | | | - Pravit Asawanonda
- Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
| | - Tanapat Palaga
- Department of Microbiology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
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24
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Ruiz-Ruiz B, Arellano-García ME, Radilla-Chávez P, Salas-Vargas DS, Toledano-Magaña Y, Casillas-Figueroa F, Luna Vazquez-Gomez R, Pestryakov A, García-Ramos JC, Bogdanchikova N. Cytokinesis-Block Micronucleus Assay Using Human Lymphocytes as a Sensitive Tool for Cytotoxicity/Genotoxicity Evaluation of AgNPs. ACS OMEGA 2020; 5:12005-12015. [PMID: 32548379 PMCID: PMC7271025 DOI: 10.1021/acsomega.0c00149] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Accepted: 05/06/2020] [Indexed: 06/11/2023]
Abstract
Silver nanoparticles (AgNPs) are the most used nanomaterials worldwide due to their excellent antibacterial, antiviral, and antitumor activities, among others. However, there is scarce information regarding their genotoxic potential measured using human peripheral blood lymphocytes. In this work, we present the cytotoxic and genotoxic behavior of two commercially available poly(vinylpyrrolidone)-coated silver nanoparticle (PVP-AgNPs) formulations that can be identified as noncytotoxic and nongenotoxic by just evaluating micronuclei (MNi) induction and the mitotic index, but present enormous differences when other parameters such as cytostasis, apoptosis, necrosis, and nuclear damage (nuclear buds (NBUDs) and nucleoplasmic bridges (NPBs)) are analyzed. The results show that Argovit (35 nm PVP-AgNPs) and nanoComposix (50 nm PVP-AgNPs), at concentrations from 0.012 to 12 μg/mL, produce no changes in the nuclear division index (NDI) or micronuclei (MNi) frequency compared with the values found on control cultures of human blood peripheral lymphocytes from a healthy donor. Still, 50 nm PVP-AgNPs significantly decrease the replication index and significantly increase cytostasis, apoptosis, necrosis, and the frequencies of nuclear buds (NBUDs) and nucleoplasmic bridges (NPBs). These results provide evidence that the cytokinesis-block micronucleus (CBMN) assay using human lymphocytes and evaluating the eight parameters provided by the technique is a sensitive, fast, accurate, and inexpensive detection tool to support or discard AgNPs or other nanomaterials, which is worthwhile for continued testing of their effectiveness and toxicity for biomedical applications. In addition, it provides very important information about the role played by the [coating agent]/[metal] ratio in the design of nanomaterials that could reduce adverse effects as much as possible while retaining their therapeutic capabilities.
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Affiliation(s)
- Balam Ruiz-Ruiz
- Laboratorio
de Genotoxicología Ambiental, Facultad de Ciencias, Universidad Autónoma de Baja California, C.P. 22860 Ensenada, Baja California, México
| | - María Evarista Arellano-García
- Laboratorio
de Genotoxicología Ambiental, Facultad de Ciencias, Universidad Autónoma de Baja California, C.P. 22860 Ensenada, Baja California, México
| | - Patricia Radilla-Chávez
- Escuela
de Ciencias de la Salud, Universidad Autónoma
de Baja California, C.P.
22890 Ensenada, Baja California, México
| | - David Sergio Salas-Vargas
- Escuela
de Ciencias de la Salud, Universidad Autónoma
de Baja California, C.P.
22890 Ensenada, Baja California, México
| | - Yanis Toledano-Magaña
- Escuela
de Ciencias de la Salud, Universidad Autónoma
de Baja California, C.P.
22890 Ensenada, Baja California, México
| | - Francisco Casillas-Figueroa
- Escuela
de Ciencias de la Salud, Universidad Autónoma
de Baja California, C.P.
22890 Ensenada, Baja California, México
| | - Roberto Luna Vazquez-Gomez
- Escuela
de Ciencias de la Salud, Universidad Autónoma
de Baja California, C.P.
22890 Ensenada, Baja California, México
| | - Alexey Pestryakov
- Department
of Technology of Organic Substances and Polymer Materials, Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Juan Carlos García-Ramos
- Escuela
de Ciencias de la Salud, Universidad Autónoma
de Baja California, C.P.
22890 Ensenada, Baja California, México
| | - Nina Bogdanchikova
- Centro
de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, C.P. 22879 Ensenada, Baja California, México
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Shahsavari MH, Alves KA, Alves BG, de Lima LF, Vizcarra DAM, Berrocal DJD, Silva LM, da Silva YP, Zelinski MB, de Figueiredo JR, Moghaddam G, Rodrigues APR. Impacts of different synthetic polymers on vitrification of ovarian tissue. Cryobiology 2020; 94:66-72. [PMID: 32339491 DOI: 10.1016/j.cryobiol.2020.04.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 04/18/2020] [Accepted: 04/18/2020] [Indexed: 01/09/2023]
Abstract
Type and concentration of cryoprotective agents (CPAs) are important factors which influence the likelihood of a successful ovarian tissue vitrification outcome. In an attempt to address this factor, the present study was conducted to evaluate the impacts of different synthetic polymers (Supercool X-1000, Supercool Z-1000 and PVP K-12) on vitrification of bovine ovarian tissue. From each ovarian pair, fragments were recovered and immediately fixed for analysis (fresh control) or submitted to vitrification, either or not followed by in vitro culture for one or five days. Vitrification was performed using the ovarian tissue cryosystem (OTC) system. The ovarian tissues were intended for histological and viability analysis [Reactive oxygen species (ROS) production and degenerate cells assay (Ethidium homodimer-1)], as well as immunolocalization of AQP3 and AQP9 were measured. The results showed that during almost all the periods after warming, in treatment groups which contain polymer (X-1000, Z-1000 and PVP), the percentage of morphologically normal follicles was the highest in the X-1000 samples. Furthermore, post-thawed X-1000 group revealed stronger labeling for AQP9 in primordial and transitional follicles, when compared with others. However, morphology after cryopreservation did not correlate with follicle viability and function where the levels of degeneration and tissue damage of PVP K-12 group were lower in comparison with X-1000 group and only in PVP K-12 group, ROS level was similar to that of the fresh control group. We believe that in addition to permeating CPAs, the addition of one (Supercool X-1000) or maybe a combination (Supercool X-1000 and PVP K-12) of non-permeating polymers could be useful to improve the outcome for vitrified bovine ovarian tissue.
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Affiliation(s)
| | - Kele Amaral Alves
- Postgraduate Program, Department of Gynecology and Obstetrics, Medicine College, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Benner Geraldo Alves
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceara, Fortaleza, CE, Brazil
| | - Laritza Ferreira de Lima
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceara, Fortaleza, CE, Brazil
| | - Diego Alberto Montano Vizcarra
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceara, Fortaleza, CE, Brazil
| | - Deysi Juana Dipaz Berrocal
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceara, Fortaleza, CE, Brazil
| | - Luciana Mascena Silva
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceara, Fortaleza, CE, Brazil
| | - Yago Pinto da Silva
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceara, Fortaleza, CE, Brazil
| | - Mary B Zelinski
- Division of Reproductive & Developmental Sciences, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR, USA
| | - José Ricardo de Figueiredo
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceara, Fortaleza, CE, Brazil
| | - Gholamali Moghaddam
- Department of Animal Sciences, Faculty of Agriculture, University of Tabriz, Tabriz, Iran.
| | - Ana Paula Ribeiro Rodrigues
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceara, Fortaleza, CE, Brazil
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Cao Y, Song W, Jiang Q, Xu Y, Cai S, Wang S, Yang W. Nanoparticles from Ancient Ink Endowing a Green and Effective Strategy for Cancer Photothermal Therapy in the Second Near-Infrared Window. ACS OMEGA 2020; 5:6177-6186. [PMID: 32226902 PMCID: PMC7098022 DOI: 10.1021/acsomega.0c00252] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Accepted: 03/03/2020] [Indexed: 06/10/2023]
Abstract
Photothermal therapy (PTT) in the second near-infrared window (NIR-II, 1000-1350 nm) has presented great superiority in cancer treatment recently. However, it is generally limited to a few photothermal agents and most of them often suffer from intricate design and complicated synthesis. Herein, by subtly extracting nanoparticles from ancient ink (AINPs), a versatile AINP dispersion with definite ingredients, good biosafety, and excellent photothermal effect in the NIR-II window was obtained. In vivo trials demonstrated that the obtained AINP dispersion provides a promising alternative for tumor sentinel lymph node (SLN) mapping. Besides, under the guidance of photoacoustic imaging, the metastatic SLNs could be accurately eliminated by NIR-II laser irradiation. The preliminary biosafety of AINP dispersion has also been systematically confirmed. Therefore, we believe this work would provide a green and effective strategy for PTT of tumor in the NIR-II window.
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Affiliation(s)
- Yongbin Cao
- State
Key Laboratory of Molecular Engineering of Polymers, Department of
Macromolecular Science, Fudan University, Shanghai 200433, P. R. China
| | - Wang Song
- Department
of Colorectal Surgery, Fudan University
Shanghai Cancer Center, Shanghai 200032, P. R. China
| | - Qin Jiang
- State
Key Laboratory of Molecular Engineering of Polymers, Department of
Macromolecular Science, Fudan University, Shanghai 200433, P. R. China
| | - Ye Xu
- Department
of Colorectal Surgery, Fudan University
Shanghai Cancer Center, Shanghai 200032, P. R. China
| | - Sanjun Cai
- Department
of Colorectal Surgery, Fudan University
Shanghai Cancer Center, Shanghai 200032, P. R. China
| | - Sheng Wang
- Department
of Colorectal Surgery, Fudan University
Shanghai Cancer Center, Shanghai 200032, P. R. China
| | - Wuli Yang
- State
Key Laboratory of Molecular Engineering of Polymers, Department of
Macromolecular Science, Fudan University, Shanghai 200433, P. R. China
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Crosslinked Hyaluronan Electrospun Nanofibers for Ferulic Acid Ocular Delivery. Pharmaceutics 2020; 12:pharmaceutics12030274. [PMID: 32192007 PMCID: PMC7151120 DOI: 10.3390/pharmaceutics12030274] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 03/07/2020] [Accepted: 03/11/2020] [Indexed: 12/12/2022] Open
Abstract
Electrospun nanofibers are gaining interest as ocular drug delivery platforms that may adapt to the eye surface and provide sustained release. The aim of this work was to design an innovative ophthalmic insert composed of hyaluronan (HA) nanofibers for the dual delivery of an antioxidant (ferulic acid, FA) and an antimicrobial peptide (ε-polylysine, ε-PL). Polyvinylpyrrolidone (PVP) was added to facilitate the electrospinning process. Fibers with diameters of approx. 100 nm were obtained with PVP 5%-HA 0.8% w/v and PVP 10%-HA 0.5% w/v mixtures in ethanol:water 4:6 v/v. An increase in PVP concentration to 20% w/v in both presence and absence of HA rendered fibers of approx. 1 µm. PVP 5%-HA 0.8% w/v fibers were loaded with 83.3 ± 14.0 µg FA per mg. After nanofibers crosslinking with ε-PL, blank and FA-loaded inserts showed a mean thickness of 270 ± 21 µm and 273 ± 41 µm, respectively. Blank and FA-loaded inserts completely released ε-PL within 30 min under sink conditions, whereas FA-loaded inserts released the antioxidant within 20 min. Both blank and FA-loaded inserts were challenged against Pseudomonas aeruginosa and Staphylococcus aureus, demonstrating their efficacy against relevant microbial species.
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28
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Pehlivan EG, Ek Y, Topkaya D, Tazebay UH, Dumoulin F. Effect of PVP formulation on the in vitro photodynamic efficiency of a photosensitizing phthalocyanine. J PORPHYR PHTHALOCYA 2020. [DOI: 10.1142/s108842461950189x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The administration of photosensitizers and their biocompatibility is crucial to the success of photodynamic therapy treatment. Amongst the various strategies developed to administer photosensitizers of low water-solubility, the use of polyvinylpyrrolidone (PVP), an FDA-approved food additive, is emerging as extremely promising. Its effect on photodynamic outcome was compared to more classical formulation in DMSO and direct solubilization in water. The tetrakis (2-(2-(2-methoxyethoxy)ethoxy)ethoxy)-Zn(II) phthalocyanine chosen as the model photosensitizer for this study proved to be a powerful photosensitizer. Even if slightly less efficient than DMSO formulation, PVP formulation proved to work very well, with submicromolar IC50 and IC90 values against MDA-MB-231 human cancer cells.
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Affiliation(s)
- Eda Gazel Pehlivan
- Gebze Technical University, Molecular Biology and Genetics Department, 41400 Gebze Kocaeli, Turkey
| | - Yıldız Ek
- Gebze Technical University, Chemistry Department, 41400 Gebze Kocaeli, Turkey
| | - Derya Topkaya
- University of Dokuz Eylül, Department of Chemistry, Faculty of Science, 35160 Tınaztepe Izmir, Turkey
| | - Uygar Halis Tazebay
- Gebze Technical University, Molecular Biology and Genetics Department, 41400 Gebze Kocaeli, Turkey
| | - Fabienne Dumoulin
- Gebze Technical University, Chemistry Department, 41400 Gebze Kocaeli, Turkey
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Hackl E, Ermolina I. Application of Texture Analysis Technique in Formulation Development of Lyophilized Orally Disintegrating Tablets Containing Mannitol, Polyvinylpyrrolidone and Amino Acids. AAPS PharmSciTech 2019; 20:71. [PMID: 30631978 DOI: 10.1208/s12249-018-1269-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 12/05/2018] [Indexed: 11/30/2022] Open
Abstract
Orally disintegrating tablets (ODTs) attract a great attention as this easy swallowing dosage form often improves patient compliance. In the current work, orally disintegrating tablets comprising mannitol, polyvinylpyrrolidone (PVP) and an amino acid (alanine, glycine or serine) with various PVP-to-amino acid ratios were formulated. The combination of mannitol and an amino acid was aimed to use the advantages of mannitol, the matrix-supporting and disintegration agent, and to reduce the total amount of sugar/polyol in tablets. Tablets were manufactured by freeze-drying and their properties (appearance, internal structure, disintegration, mechanical and texture properties, moisture uptake, shrinkage, thermal properties) were assessed. In the work, great emphasis was placed on illustrating the applicability of the Texture Analysis of the freeze-dried cakes directly in vials in formulation development. The results show that the appearance, mechanical properties, disintegration and shrinkage of the freeze-dried ODTs depend significantly on the excipient composition with PVP playing the leading role. Partial mannitol replacement with an amino acid has a limited impact on the tablet properties. The presence of an amino acid also has no impact on the PVP-mannitol interaction. The mechanical and texture properties of freeze-dried ODTs depend non-linearly on the PVP content. The transition between the different types of textures occurs in a narrow range of PVP concentrations regardless of the type of amino acid in a formulation. The non-linear effect of PVP on various tablet properties should be taken into account when designing ODT formulations as it can compromise the robustness of the manufacturing process.
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30
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Co-printing of vertical axis aligned micron-scaled filaments via simultaneous dual needle electrohydrodynamic printing. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.05.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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31
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Chen L, Chen J, Qiu S, Wen L, Wu Y, Hou Y, Wang Y, Zeng J, Feng Y, Li Z, Shan H, Gao M. Biodegradable Nanoagents with Short Biological Half-Life for SPECT/PAI/MRI Multimodality Imaging and PTT Therapy of Tumors. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:1702700. [PMID: 29194958 DOI: 10.1002/smll.201702700] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 10/07/2017] [Indexed: 06/07/2023]
Abstract
Rapid clearance of nanoagents is a critical criterion for their clinical translation. Herein, it is reported that biodegradable and renal clearable nanoparticles are potentially useful for image-guided photothermal therapy of tumors. The multifunctional nanoparticles with excellent colloidal stability are synthesized through coordination reactions between Fe3+ ions and gallic acid (GA)/polyvinyl pyrrolidone (PVP) in aqueous solution. Detailed characterization reveals that the resulting Fe3+ /GA/PVP complex nanoparticles (FGPNs) integrate strong near-infrared absorption with paramagnetism well. As a result, the FGPNs present outstanding performance for photoacoustic imaging and magnetic resonance imaging of tumors, and outstanding photothermal ablation effect for tumor therapy owing to their high photothermal conversion efficiency. More importantly, the pharmacokinetic behaviors of the FGPNs determined through 125 I labeling suggest that the FGPNs are readily degraded in vivo showing a short biological half-life, and the decomposition products are excreted through either renal clearance pathway or bowel elimination pathway via stomach, which highlights the characteristics of the current multifunctional theranostic agent and their potential in clinical translation.
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Affiliation(s)
- Lei Chen
- Center for Molecular Imaging and Nuclear Medicine, School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou, 215123, China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, 215123, China
| | - Jiayao Chen
- Department of Interventional Medicine, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, 519000, China
| | - Shanshan Qiu
- Center for Molecular Imaging and Nuclear Medicine, School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou, 215123, China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, 215123, China
| | - Ling Wen
- Center for Molecular Imaging and Nuclear Medicine, School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou, 215123, China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, 215123, China
| | - Yan Wu
- Center for Molecular Imaging and Nuclear Medicine, School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou, 215123, China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, 215123, China
| | - Yi Hou
- Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yong Wang
- Center for Molecular Imaging and Nuclear Medicine, School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou, 215123, China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, 215123, China
| | - Jianfeng Zeng
- Center for Molecular Imaging and Nuclear Medicine, School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou, 215123, China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, 215123, China
| | - Yuan Feng
- Center for Molecular Imaging and Nuclear Medicine, School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou, 215123, China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, 215123, China
| | - Zhen Li
- Center for Molecular Imaging and Nuclear Medicine, School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou, 215123, China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, 215123, China
| | - Hong Shan
- Department of Interventional Medicine, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, 519000, China
- Guangdong Provincial Engineering Research Center of Molecular Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, 519000, P. R. China
| | - Mingyuan Gao
- Center for Molecular Imaging and Nuclear Medicine, School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou, 215123, China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, 215123, China
- Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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Baláž M, Balážová Ľ, Daneu N, Dutková E, Balážová M, Bujňáková Z, Shpotyuk Y. Plant-Mediated Synthesis of Silver Nanoparticles and Their Stabilization by Wet Stirred Media Milling. NANOSCALE RESEARCH LETTERS 2017; 12:83. [PMID: 28144916 PMCID: PMC5285287 DOI: 10.1186/s11671-017-1860-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 01/18/2017] [Indexed: 06/06/2023]
Abstract
Within this study, a stable nanosuspension of silver nanoparticles (Ag NPs) was prepared using a two-step synthesis and stabilization approach. The Ag NPs were synthesized from a silver nitrate solution using the Origanum vulgare L. plant extract as the reducing agent. The formation of nanoparticles was finished upon 15 min, and subsequently, stabilization by polyvinylpyrrolidone (PVP) using wet stirred media milling was applied. UV-Vis spectra have shown a maximum at 445 nm, corresponding to the formation of spherical Ag NPs. Infrared spectroscopy was used to examine the interaction between Ag NPs and the capping agents. TEM study has shown the formation of Ag NPs with two different average sizes (38 ± 10 nm and 7 ± 3 nm) after the plant-mediated synthesis, both randomly distributed within the organic matrix. During milling in PVP, the clusters of Ag NPs were destroyed, the Ag NPs were fractionized and embedded in PVP. The nanosuspensions of PVP-capped Ag NPs were stable for more than 26 weeks, whereas for the non-stabilized nanosuspensions, only short-term stability for about 1 week was documented.
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Affiliation(s)
- Matej Baláž
- Department of Mechanochemistry, Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, Košice, 04001, Slovakia
| | - Ľudmila Balážová
- Department of Pharmacognosy and Botany, University of Veterinary Medicine and Pharmacy, Komenského 73, Košice, 04181, Slovakia
| | - Nina Daneu
- Department of Nanostructured Materials, Jožef Stefan Institute, Jamova cesta 39, Ljubljana, 1000, Slovenia
| | - Erika Dutková
- Department of Mechanochemistry, Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, Košice, 04001, Slovakia
| | - Miriama Balážová
- Department of Pharmacognosy and Botany, University of Veterinary Medicine and Pharmacy, Komenského 73, Košice, 04181, Slovakia
| | - Zdenka Bujňáková
- Department of Mechanochemistry, Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, Košice, 04001, Slovakia
| | - Yaroslav Shpotyuk
- Ivan Franko National University of Lviv, Tarnavskogo 107, Lviv, 79017, Ukraine.
- CITNSEK, Faculty of Mathematics and Natural Sciences, University of Rzeszow, Pigonia 1, Rzeszow, 35-958, Poland.
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33
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Ianniello C, de Zwart JA, Duan Q, Deniz CM, Alon L, Lee JS, Lattanzi R, Brown R. Synthesized tissue-equivalent dielectric phantoms using salt and polyvinylpyrrolidone solutions. Magn Reson Med 2017; 80:413-419. [PMID: 29159985 DOI: 10.1002/mrm.27005] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 10/03/2017] [Accepted: 10/23/2017] [Indexed: 11/11/2022]
Abstract
PURPOSE To explore the use of polyvinylpyrrolidone (PVP) for simulated materials with tissue-equivalent dielectric properties. METHODS PVP and salt were used to control, respectively, relative permittivity and electrical conductivity in a collection of 63 samples with a range of solute concentrations. Their dielectric properties were measured with a commercial probe and fitted to a 3D polynomial in order to establish an empirical recipe. The material's thermal properties and MR spectra were measured. RESULTS The empirical polynomial recipe (available at https://www.amri.ninds.nih.gov/cgi-bin/phantomrecipe) provides the PVP and salt concentrations required for dielectric materials with permittivity and electrical conductivity values between approximately 45 and 78, and 0.1 to 2 siemens per meter, respectively, from 50 MHz to 4.5 GHz. The second- (solute concentrations) and seventh- (frequency) order polynomial recipe provided less than 2.5% relative error between the measured and target properties. PVP side peaks in the spectra were minor and unaffected by temperature changes. CONCLUSION PVP-based phantoms are easy to prepare and nontoxic, and their semitransparency makes air bubbles easy to identify. The polymer can be used to create simulated material with a range of dielectric properties, negligible spectral side peaks, and long T2 relaxation time, which are favorable in many MR applications. Magn Reson Med 80:413-419, 2018. © 2017 International Society for Magnetic Resonance in Medicine.
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Affiliation(s)
- Carlotta Ianniello
- Center for Advanced Imaging Innovation and Research (CAI2R) and Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, New York, USA.,The Sackler Institute of Graduate Biomedical Science, New York University School of Medicine, New York, New York, USA
| | - Jacco A de Zwart
- Laboratory of Functional and Molecular Imaging, NINDS, National Institutes of Health, Bethesda, Maryland, USA
| | - Qi Duan
- Laboratory of Functional and Molecular Imaging, NINDS, National Institutes of Health, Bethesda, Maryland, USA
| | - Cem M Deniz
- Center for Advanced Imaging Innovation and Research (CAI2R) and Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, New York, USA
| | - Leeor Alon
- Center for Advanced Imaging Innovation and Research (CAI2R) and Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, New York, USA
| | - Jae-Seung Lee
- Center for Advanced Imaging Innovation and Research (CAI2R) and Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, New York, USA
| | - Riccardo Lattanzi
- Center for Advanced Imaging Innovation and Research (CAI2R) and Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, New York, USA.,The Sackler Institute of Graduate Biomedical Science, New York University School of Medicine, New York, New York, USA
| | - Ryan Brown
- Center for Advanced Imaging Innovation and Research (CAI2R) and Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, New York, USA
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34
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Cole G, McCaffrey J, Ali AA, McBride JW, McCrudden CM, Vincente-Perez EM, Donnelly RF, McCarthy HO. Dissolving microneedles for DNA vaccination: Improving functionality via polymer characterization and RALA complexation. Hum Vaccin Immunother 2016; 13:50-62. [PMID: 27846370 DOI: 10.1080/21645515.2016.1248008] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
DNA vaccination holds the potential to treat or prevent nearly any immunogenic disease, including cancer. To date, these vaccines have demonstrated limited immunogenicity in vivo due to the absence of a suitable delivery system which can protect DNA from degradation and improve transfection efficiencies in vivo. Recently, microneedles have been described as a novel physical delivery technology to enhance DNA vaccine immunogenicity. Of these devices, dissolvable microneedles promise a safe, pain-free delivery system which may simultaneously improve DNA stability within a solid matrix and increase DNA delivery compared to solid arrays. However, to date little work has directly compared the suitability of different dissolvable matrices for formulation of DNA-loaded microneedles. Therefore, the current study examined the ability of 4 polymers to formulate mechanically robust, functional DNA loaded dissolvable microneedles. Additionally, complexation of DNA to a cationic delivery peptide, RALA, prior to incorporation into the dissolvable matrix was explored as a means to improve transfection efficacies following release from the polymer matrix. Our data demonstrates that DNA is degraded following incorporation into PVP, but not PVA matrices. The complexation of DNA to RALA prior to incorporation into polymers resulted in higher recovery from dissolvable matrices, and increased transfection efficiencies in vitro. Additionally, RALA/DNA nanoparticles released from dissolvable PVA matrices demonstrated up to 10-fold higher transfection efficiencies than the corresponding complexes released from PVP matrices, indicating that PVA is a superior polymer for this microneedle application.
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Affiliation(s)
- Grace Cole
- a School of Pharmacy, Queen's University Belfast , Belfast , Northern Ireland , UK
| | - Joanne McCaffrey
- a School of Pharmacy, Queen's University Belfast , Belfast , Northern Ireland , UK
| | - Ahlam A Ali
- a School of Pharmacy, Queen's University Belfast , Belfast , Northern Ireland , UK
| | - John W McBride
- a School of Pharmacy, Queen's University Belfast , Belfast , Northern Ireland , UK
| | - Cian M McCrudden
- a School of Pharmacy, Queen's University Belfast , Belfast , Northern Ireland , UK
| | - Eva M Vincente-Perez
- a School of Pharmacy, Queen's University Belfast , Belfast , Northern Ireland , UK
| | - Ryan F Donnelly
- a School of Pharmacy, Queen's University Belfast , Belfast , Northern Ireland , UK
| | - Helen O McCarthy
- a School of Pharmacy, Queen's University Belfast , Belfast , Northern Ireland , UK
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Morgan SJ, Besenhofer LM, Buck W, Lorenz H, Rhodes JW, Yang Y. Copovidone-related Cutaneous Response in the Dog. Toxicol Pathol 2016; 45:84-89. [PMID: 27651421 DOI: 10.1177/0192623316669445] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A cutaneous response (localized swelling and/or erythema of the skin) has been noted in dog toxicology studies in which multiple, unrelated compounds were administered orally with copovidone as a vehicle. The response has been noted in studies with 6 different test items that are structurally unrelated and span several different therapeutic indications spanning an approximate 6-year period (2009-2015). A factor common among the studies is the formulation-a copovidone amorphous solid dispersion (ASD). Cutaneous responses have not been observed in dogs administered non-ASD formulations of the same test items but have occasionally been noted in placebo (copovidone control) dogs. Polyvinylpyrrolidone (a polymer of one of the primary components of copovidone) has been reported to result in similar findings in dogs when administered by the intravenous route. Considerations for the role of copovidone and the potential role of histamine in the cutaneous changes are outlined.
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Affiliation(s)
- Sherry J Morgan
- 1 Preclinical Safety, AbbVie, Inc., North Chicago, Illinois, USA
| | | | - Wayne Buck
- 1 Preclinical Safety, AbbVie, Inc., North Chicago, Illinois, USA
| | - Helga Lorenz
- 2 Preclinical Safety, Abbvie GmbH & Co. KG, Ludwigshafen, Germany
| | - James W Rhodes
- 1 Preclinical Safety, AbbVie, Inc., North Chicago, Illinois, USA
| | - Yi Yang
- 1 Preclinical Safety, AbbVie, Inc., North Chicago, Illinois, USA
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36
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Kuskov AN, Kulikov PP, Shtilman MI, Rakitskii VN, Tsatsakis AM. Amphiphilic poly-N-vynilpyrrolidone nanoparticles: Cytotoxicity and acute toxicity study. Food Chem Toxicol 2016; 96:273-9. [PMID: 27539747 DOI: 10.1016/j.fct.2016.08.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 07/28/2016] [Accepted: 08/13/2016] [Indexed: 11/17/2022]
Abstract
The aim of the present study was to evaluate the cytotoxicity against MCF-7 cells and acute intraperitoneal toxicity of amphiphilic poly-N-vinylpyrrolidone nanoparticles to confirm possibility of their application for creation of novel drug delivery systems. The effect of cellular uptake of polymeric nanoparticles on human cancer cell line MCF-7 cells was investigated by MTT assay. MTT analysis showed that tested amphiphilic polymers were essentially non-toxic. In acute toxicity studies, LD50 and other toxicity indexes were evaluated, under which no deaths or treatment related complications were observed even in high concentration treatment for 14 days of experiment. For histological analysis, organs of the animals were weighed and examined. No animal died during the study and no significant changes have been observed regarding body weight, feed consumption, organ weight or histological data. Obtained results show that amphiphilic poly-N-vinylpyrrolidone nanoparticles possessed no toxicity against cells and in animals after intraperitoneal administration. Thus, amphiphilic PVP nanoparticles demonstrate high potential as carriers for novel high-effective drug delivery systems.
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Affiliation(s)
- A N Kuskov
- D.I. Mendeleyev University of Chemical Technology of Russia, Moscow 125047, Russian Federation; Moscow State University of Mechanical Engineering (MAMI), Moscow 107023, Russian Federation.
| | - P P Kulikov
- D.I. Mendeleyev University of Chemical Technology of Russia, Moscow 125047, Russian Federation
| | - M I Shtilman
- D.I. Mendeleyev University of Chemical Technology of Russia, Moscow 125047, Russian Federation
| | - V N Rakitskii
- Federal Scientific Center of Hygiene, F.F. Erisman, Moscow 141014, Russian Federation
| | - A M Tsatsakis
- University of Crete, Medical School, Laboratory of Toxicology, Voutes, Heraklion 71409, Crete, Greece
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37
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Jeong HR, Lee HS, Choi IJ, Park JH. Considerations in the use of microneedles: pain, convenience, anxiety and safety. J Drug Target 2016; 25:29-40. [DOI: 10.1080/1061186x.2016.1200589] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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38
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Serum-free non-toxic freezing solution for cryopreservation of human adipose tissue-derived mesenchymal stem cells. Biotechnol Lett 2016; 38:1397-404. [PMID: 27146206 DOI: 10.1007/s10529-016-2111-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 04/27/2016] [Indexed: 12/14/2022]
Abstract
OBJECTIVE To develop a cost-effective, non-toxic and xeno-free freezing solution for the preservation of adipose tissue-derived stem cells (hADSC) with a long shelf-life. RESULTS The potential of various hydrocolloids and organic osmolytes as cryoprotectants and individual components of phosphate buffered saline (PBS) as carrier media were evaluated to formulate a freezing solution for the cryopreservation of hADSCs. Among the hydrocolloids, the highest viability, 55 %, was achieved with post-thawed (after 48 h storage at -80 °C) hADSCs cryopreserved in 10 % (v/v) polyvinylpyrrolidone (PVP) using PBS as carrier media. 0.9 % NaCl was a superior carrier medium resulting an enhanced cell viability (70 %) when used in 10 % PVP than other components of PBS. A higher cell viability (81 %) was achieved when 10 % PVP/0.9 % NaCl was supplemented with 60 mM ectoin. The cryopreserved cells retained normal cytoskeletal distribution pattern and adipogenic and osteogenic differentiation ability during 14 and 21 days of incubation. CONCLUSION A serum-free and non-toxic 10 % PVP/0.9 % NaCl/60 mM ectoin freezing solution was developed for cryopreservation of hADSC for application in tissue engineering and regenerative medicine.
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39
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40
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Heyns IM, Pfukwa R, Klumperman B. Synthesis, Characterization, and Evaluation of Cytotoxicity of Poly(3-methylene-2-pyrrolidone). Biomacromolecules 2016; 17:1795-800. [DOI: 10.1021/acs.biomac.6b00210] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ingrid M. Heyns
- Department
of Chemistry and Polymer Science, Stellenbosch University, Private Bag
X1, Matieland 7602, South Africa
| | - Rueben Pfukwa
- Department
of Chemistry and Polymer Science, Stellenbosch University, Private Bag
X1, Matieland 7602, South Africa
| | - Bert Klumperman
- Department
of Chemistry and Polymer Science, Stellenbosch University, Private Bag
X1, Matieland 7602, South Africa
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41
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Reader PW, Pfukwa R, Jokonya S, Arnott GE, Klumperman B. Synthesis of α,ω-heterotelechelic PVP for bioconjugation, via a one-pot orthogonal end-group modification procedure. Polym Chem 2016. [DOI: 10.1039/c6py01296e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A simple one pot orthogonal procedure for synthesizing α-aldehyde, ω-thiol heterotelechelic poly(N-vinylpyrrolidone) (PVP) is introduced.
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Affiliation(s)
- Paul. W. Reader
- Department of Chemistry and Polymer Science
- Stellenbosch University
- Matieland 7602
- South Africa
| | - Rueben Pfukwa
- Department of Chemistry and Polymer Science
- Stellenbosch University
- Matieland 7602
- South Africa
| | - Simbarashe Jokonya
- Department of Chemistry and Polymer Science
- Stellenbosch University
- Matieland 7602
- South Africa
| | - Gareth E. Arnott
- Department of Chemistry and Polymer Science
- Stellenbosch University
- Matieland 7602
- South Africa
| | - Bert Klumperman
- Department of Chemistry and Polymer Science
- Stellenbosch University
- Matieland 7602
- South Africa
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42
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Aroua S, Tiu EGV, Ayer M, Ishikawa T, Yamakoshi Y. RAFT synthesis of poly(vinylpyrrolidone) amine and preparation of a water-soluble C60-PVP conjugate. Polym Chem 2015. [DOI: 10.1039/c4py01333f] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A well-defined C60-PVP conjugate with a sufficient water-solubility was successfully synthesized by RAFT polymerization of NVP and subsequent reaction with a C60 acid anhydride derivative.
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Affiliation(s)
- Safwan Aroua
- Laboratorium für Organische Chemie
- ETH-Zürich
- Vladimir-Prelog-Weg 3
- CH-8093 Zürich
- Switzerland
| | | | - Maxime Ayer
- Laboratorium für Organische Chemie
- ETH-Zürich
- Vladimir-Prelog-Weg 3
- CH-8093 Zürich
- Switzerland
| | - Takashi Ishikawa
- Laboratory of Biomolecular Research
- Paul Scherrer Institute
- Villigen
- Switzerland
| | - Yoko Yamakoshi
- Laboratorium für Organische Chemie
- ETH-Zürich
- Vladimir-Prelog-Weg 3
- CH-8093 Zürich
- Switzerland
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43
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Silva HFO, Lima KMG, Cardoso MB, Oliveira JFA, Melo MCN, Sant'Anna C, Eugênio M, Gasparotto LHS. Doxycycline conjugated with polyvinylpyrrolidone-encapsulated silver nanoparticles: a polymer's malevolent touch against Escherichia coli. RSC Adv 2015. [DOI: 10.1039/c5ra10880b] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The interaction of PVP-capped silver nanoparticles with doxycycline enhances bactericidal properties.
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Affiliation(s)
- Heloiza F. O. Silva
- Group of Biological Chemistry and Chemometrics
- Institute of Chemistry
- Federal University of Rio Grande do Norte
- Natal 59072-970
- Brazil
| | - Kássio M. G. Lima
- Group of Biological Chemistry and Chemometrics
- Institute of Chemistry
- Federal University of Rio Grande do Norte
- Natal 59072-970
- Brazil
| | - Mateus B. Cardoso
- LNLS – Brazilian Synchrotron Light Laboratory CEP 13083-970
- Campinas
- Brazil
| | | | - Maria C. N. Melo
- Laboratory of Medical Bacteriology
- Center of Biosciences
- Federal University of Rio Grande do Norte
- Natal 59078-970
- Brazil
| | - Celso Sant'Anna
- Laboratory of Biotechnology – Labio
- National Institute of Metrology, Quality and Technology – Inmetro
- RJ
- Brazil
| | - Mateus Eugênio
- Laboratory of Biotechnology – Labio
- National Institute of Metrology, Quality and Technology – Inmetro
- RJ
- Brazil
| | - Luiz H. S. Gasparotto
- Group of Biological Chemistry and Chemometrics
- Institute of Chemistry
- Federal University of Rio Grande do Norte
- Natal 59072-970
- Brazil
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44
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Ultrathin core–sheath fibers for liposome stabilization. Colloids Surf B Biointerfaces 2014; 122:630-637. [DOI: 10.1016/j.colsurfb.2014.07.042] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Revised: 07/21/2014] [Accepted: 07/28/2014] [Indexed: 11/20/2022]
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45
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Phosphate-enhanced cytotoxicity of zinc oxide nanoparticles and agglomerates. Toxicol Lett 2014; 225:177-84. [DOI: 10.1016/j.toxlet.2013.12.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 12/05/2013] [Accepted: 12/06/2013] [Indexed: 11/21/2022]
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46
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Deng Z, Jing L, Wu N, Lv P, Jiang X, Ren Q, Li C. Viscous optical clearing agent for in vivo optical imaging. JOURNAL OF BIOMEDICAL OPTICS 2014; 19:76019. [PMID: 25069008 DOI: 10.1117/1.jbo.19.7.076019] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Accepted: 07/09/2014] [Indexed: 05/08/2023]
Abstract
By allowing more photons to reach deeper tissue, the optical clearing agent (OCA) has gained increasing attention in various optical imaging modalities. However, commonly used OCAs have high fluidity, limiting their applications in in vivo studies with oblique, uneven, or moving surfaces. In this work, we reported an OCA with high viscosity. We measured the properties of this viscous OCA, and tested its successful performances in the imaging of a living animal’s skin with two optical imaging modalities: photoacoustic microscopy and optical coherence tomography. Our results demonstrated that the viscous OCA has a great potential in the study of different turbid tissues using various optical imaging modalities.
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Affiliation(s)
- Zijian Deng
- Peking University, College of Engineering, Department of Biomedical Engineering, No. 5 Yiheyuan Road, Haidian, Beijing 100871, China
| | - Lijia Jing
- Harbin Institute of Technology, School of Life Science and Technology, Harbin 150001, China
| | - Ning Wu
- Peking University, College of Engineering, Department of Biomedical Engineering, No. 5 Yiheyuan Road, Haidian, Beijing 100871, China
| | - Pengyu Lv
- Peking University, College of Engineering, Department of Mechanics and Engineering Science, Beijing 100871, China
| | - Xiaoyun Jiang
- Peking University, College of Engineering, Department of Biomedical Engineering, No. 5 Yiheyuan Road, Haidian, Beijing 100871, China
| | - Qiushi Ren
- Peking University, College of Engineering, Department of Biomedical Engineering, No. 5 Yiheyuan Road, Haidian, Beijing 100871, China
| | - Changhui Li
- Peking University, College of Engineering, Department of Biomedical Engineering, No. 5 Yiheyuan Road, Haidian, Beijing 100871, China
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47
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Wohl BM, Smith AAA, Kryger MBL, Zelikin AN. Narrow therapeutic window of ribavirin as an inhibitor of nitric oxide synthesis is broadened by macromolecular prodrugs. Biomacromolecules 2013; 14:3916-26. [PMID: 24156371 DOI: 10.1021/bm401048s] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Ribavirin (RBV), a broad-spectrum antiviral agent, is a standard medication against hepatitis C virus (HCV). However, despite the decades of clinical success, the mechanism of action of this drug against HCV remains a subject of debate. Furthermore, the appeal of this therapeutic agent is considerably lessened by unfavorable pharmacokinetics. This interdisciplinary study contributes to the understanding of intracellular effects exerted by RBV and presents a successful design of macromolecular prodrugs of RBV to achieve a safer treatment. Specifically, we demonstrate that RBV exhibits a pronounced anti-inflammatory activity in cultured macrophages as is evidenced by a 2-fold decrease in the levels of produced nitric oxide achieved using a clinically relevant concentration of this drug. However, this effect was characterized by a rather narrow therapeutic window with experimental values of EC50 and IC50 being 7 and 19 μM, respectively. Macromolecular prodrugs were obtained using an acrylate derivative of RBV, RAFT polymerization technique, and N-vinyl pyrrolidone as a partner monomer. The synthesized polymers were characterized with uniform molecular weights, relatively narrow polydispersities, and gradually increasing content of RBV. The resulting polymer therapeutics were effective in delivering their payload to the cultured macrophages and afforded a significantly wider therapeutic window, as much as >1000 μM (18-fold in relative values). Taken together, this work contributes significantly to the development of safer methods for delivery of RBV, as well as understanding the mechanism of action and origins of the side effects of this broad-spectrum antiviral agent.
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Affiliation(s)
- Benjamin M Wohl
- Department of Chemistry and ‡iNano Interdisciplinary Nanoscience Centre, Aarhus University , Aarhus 8000, Denmark
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48
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Pacławski K, Streszewski B, Jaworski W, Luty-Błocho M, Fitzner K. Gold nanoparticles formation via gold(III) chloride complex ions reduction with glucose in the batch and in the flow microreactor systems. Colloids Surf A Physicochem Eng Asp 2012. [DOI: 10.1016/j.colsurfa.2012.02.050] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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49
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Traini D, Scalia S, Adi H, Marangoni E, Young PM. Polymer coating of carrier excipients modify aerosol performance of adhered drugs used in dry powder inhalation therapy. Int J Pharm 2012; 438:150-9. [DOI: 10.1016/j.ijpharm.2012.08.036] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2012] [Revised: 07/25/2012] [Accepted: 08/18/2012] [Indexed: 11/16/2022]
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50
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Busselez R, Arbe A, Cerveny S, Capponi S, Colmenero J, Frick B. Component dynamics in polyvinylpyrrolidone concentrated aqueous solutions. J Chem Phys 2012; 137:084902. [DOI: 10.1063/1.4746020] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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