1
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Zhang Y, Wang J. Current status and prospects of gelatin and its derivatives in oncological applications: Review. Int J Biol Macromol 2024; 274:133590. [PMID: 38996884 DOI: 10.1016/j.ijbiomac.2024.133590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 06/23/2024] [Accepted: 06/29/2024] [Indexed: 07/14/2024]
Abstract
Treating cancer remains challenging due to the substantial side effects and unfavourable pharmacokinetic characteristics of antineoplastic medications, despite the progress made in comprehending the properties and actions of tumour cells in recent years. The advancement of biomaterials, such as stents, implants, personalised drug delivery systems, tailored grafts, cell sheets, and other transplantable materials, has brought about a significant transformation in healthcare and medicine in recent years. Gelatin is a very adaptable natural polymer that finds extensive application in healthcare-related industries owing to its favourable characteristics, including biocompatibility, biodegradability, affordability, and the presence of accessible chemical groups. Gelatin is used as a biomaterial in the biomedical sector for the creation of drug delivery systems (DDSs) since it may be applied to various synthetic procedures. Gelatin nanoparticles (NPs) have been extensively employed as carriers for drugs and genes, specifically targeting diseased tissues such as cancer, tuberculosis, and HIV infection, as well as treating vasospasm and restenosis. This is mostly due to their biocompatibility and ability to degrade naturally. Gelatins possess a diverse array of potential applications that require more elucidation. This review focuses on the use of gelatin and its derivatives in the diagnosis and treatment of cancer. The advancement of biomaterials and bioreactors, coupled with the increasing understanding of emerging applications for biomaterials, has enabled progress in enhancing the efficacy of tumour treatment.
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Affiliation(s)
- Yingfeng Zhang
- University-Town Hospital of Chongqing Medical University, Chongqing 401331, China
| | - Jia Wang
- University-Town Hospital of Chongqing Medical University, Chongqing 401331, China.
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2
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Ahmad K, Meng Y, Fan C, Din ASU, Jia Q, Ashraf A, Zhang Y, Hou H. Collagen/gelatin and polysaccharide complexes enhance gastric retention and mucoadhesive properties. Int J Biol Macromol 2024; 266:131034. [PMID: 38518948 DOI: 10.1016/j.ijbiomac.2024.131034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 03/09/2024] [Accepted: 03/19/2024] [Indexed: 03/24/2024]
Abstract
This article has focused on collagen-gelatin, the gelation process, as well as blend interaction between collagen/gelatin with various polysaccharides to boost mucoadhesion and gastric retention. The interaction between mucoadhesive materials and mucin layers is of significant interest in the development of drug delivery systems and biomedical applications for effective targeting and prolonged time in the gastrointestinal tract. This paper reviews the current advancement and mucoadhesive properties of collagen/gelatin and different polysaccharide complexes concerning the mucin layer and interactions are briefly highlighted. Collagen/gelatin and polysaccharide blends biocompatible and biodegradable, the complex biomolecules have shown encouraging mucoadhesive properties due to their cationic nature and ability to form hydrogen bonds with mucin glycoproteins. The mucoadhesion mechanism was attributed to the electrostatic interactions between the positively charged amino (NH2) groups of blend biopolymers and the negatively charged sialic acid residues present in mucin glycoprotein. At the end of this article, the encouraging prospect of collagen/polysaccharide complex and mucin glycoprotein is highlighted.
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Affiliation(s)
- Khurshid Ahmad
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, No.1299, Sansha Road, Qingdao, Shandong Province 266404, PR China
| | - Yuqian Meng
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, No.1299, Sansha Road, Qingdao, Shandong Province 266404, PR China
| | - Chaozhong Fan
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, No.1299, Sansha Road, Qingdao, Shandong Province 266404, PR China
| | - Aiman Salah Ud Din
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, No.1299, Sansha Road, Qingdao, Shandong Province 266404, PR China
| | - Qiannan Jia
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, No.1299, Sansha Road, Qingdao, Shandong Province 266404, PR China
| | - Azqa Ashraf
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, No.1299, Sansha Road, Qingdao, Shandong Province 266404, PR China
| | - Yanying Zhang
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, No.1299, Sansha Road, Qingdao, Shandong Province 266404, PR China
| | - Hu Hou
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, No.1299, Sansha Road, Qingdao, Shandong Province 266404, PR China; Laboratory for Marine Drugs and Bioproducts, Laoshan Laboratory, Qingdao, Shandong Province 266237, PR China; Sanya Oceanographic Institution, Ocean University of China, Sanya, Hainan Province 572024, PR China; Qingdao Institute of Marine Bioresources for Nutrition & Health Innovation, Qingdao, Shandong Province 266000, PR China.
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3
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Nazir A, Abbas M, Iqbal DN, Ameen F, Al-Mijalli SH, Ahmad N, Iqbal M. Fabrication of CMC/PVA/Dextrin-Based Polymeric Membrane for Controlled Release of Cefixime With Enhanced Antibacterial Activity. Dose Response 2024; 22:15593258241264951. [PMID: 38912332 PMCID: PMC11193932 DOI: 10.1177/15593258241264951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 06/10/2024] [Indexed: 06/25/2024] Open
Abstract
This study focuses on the investigation of the significance of polymers in drug delivery approaches. The carboxymethyl cellulose (CMC), polyvinyl alcohol (PVA) and dextrin-based hydrogel membrane were prepared and employed for the sustained release of third-generation oral antibiotic (cefixime). Different proportions of CMC, PVA and dextrin were blended and hydrogel membranes were fabricated via solvent casting method. The prepared membrane was characterized by FTIR, SEM, UV-visible, TGA and swelling analysis. Cefixime drug was incorporated in the CMC/PVA/dextrin matrix and drug release was investigated. The sustained release of the tested drug (cefixime) was investigated and the drug was released in 120 min in the phosphate-buffered saline (PBS) solution. The antibacterial activity of the prepared membrane was promising against Proteus vulgaris, salmonella typhi, Escherichia coli and Bacillus subtilis strains. The swelling capabilities, thermal stability and non-toxic nature of the prepared CMC/PVA/dextrin membrane could have potential applications for cefixime drug in delivery in a controlled way for the treatment of infectious diseases.
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Affiliation(s)
- Arif Nazir
- Department of Chemistry, The University of Lahore, Lahore, Pakistan
| | - Mazhar Abbas
- Department of Basic Science (Section Biochemistry), University of Veterinary and Animals Science Lahore, Jhang, Pakistan
| | - Dure Najaf Iqbal
- Department of Chemistry, The University of Lahore, Lahore, Pakistan
| | - Fadia Ameen
- Department of Chemistry, The University of Lahore, Lahore, Pakistan
| | - Samiah H. Al-Mijalli
- Department of Biology, College of Sciences, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Naveed Ahmad
- Department of Chemistry, Division of Science and Technology, University of Education, Lahore, Pakistan
| | - Munawar Iqbal
- School of Chemistry, University of the Punjab, Lahore, Pakistan
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4
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Kazama R, Sakai S. Effect of cell adhesiveness of Cell Dome shell on enclosed HeLa cells. J Biosci Bioeng 2024; 137:313-320. [PMID: 38307767 DOI: 10.1016/j.jbiosc.2024.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 12/17/2023] [Accepted: 01/06/2024] [Indexed: 02/04/2024]
Abstract
The Cell Dome is a dome-shaped structure (diameter: 1 mm, height: 270 μm) with cells enclosed within a cavity, covered by a hemispherical hydrogel shell, and immobilized on a glass plate. Given that the cells within Cell Dome are in contact with the inner walls of the hydrogel shell, the properties of the shell are anticipated to influence cell behavior. To date, the impact of the hydrogel shell properties on the enclosed cells has not been investigated. In this study, we explored the effects of the cell adhesiveness of hydrogel shell on the behavior of enclosed cancer cells. Hydrogel shells with varying degrees of cell adhesiveness were fabricated using aqueous solutions containing either an alginate derivative with phenolic hydroxyl moieties exclusively or a mixture of alginate and gelatin derivatives with phenolic hydroxyl moieties. Hydrogel formation was mediated by horseradish peroxidase. We used the HeLa human cervical cancer cell line, which expresses fucci2, a cell cycle marker, to observe cell behavior. Cells cultured in hydrogel shells with cell adhesiveness proliferated along the inner wall of the hydrogel shell. Conversely, cells in hydrogel shells without cell adhesiveness grew uniformly at the bottom of the cavities. Furthermore, cells in non-adhesive hydrogel shells had a higher percentage of cells in the G1/G0 phase compared to those in adhesive shells and exhibited increased resistance to mitomycin hydrochloride when the cavities became filled with cells. These results highlight the need to consider the cell adhesiveness of the hydrogel shell when selecting materials for constructing Cell Dome.
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Affiliation(s)
- Ryotaro Kazama
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan.
| | - Shinji Sakai
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan.
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5
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Kaynarca GB, Kamer DDA, Gumus T, Sagdıc O. Characterization of Poly(vinyl alcohol)/gelatin films made with winery solid by-product (vinasse) extract. Food Packag Shelf Life 2023. [DOI: 10.1016/j.fpsl.2022.101013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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6
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Voriconazole Eye Drops: Enhanced Solubility and Stability through Ternary Voriconazole/Sulfobutyl Ether β-Cyclodextrin/Polyvinyl Alcohol Complexes. Int J Mol Sci 2023; 24:ijms24032343. [PMID: 36768671 PMCID: PMC9917179 DOI: 10.3390/ijms24032343] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 01/21/2023] [Accepted: 01/23/2023] [Indexed: 01/27/2023] Open
Abstract
Voriconazole (VCZ) is a broad-spectrum antifungal agent used to treat ocular fungal keratitis. However, VCZ has low aqueous solubility and chemical instability in aqueous solutions. This study aimed to develop VCZ eye drop formulations using cyclodextrin (CD) and water-soluble polymers, forming CD complex aggregates to improve the aqueous solubility and chemical stability of VCZ. The VCZ solubility was greatly enhanced using sulfobutyl ether β-cyclodextrin (SBEβCD). The addition of polyvinyl alcohol (PVA) showed a synergistic effect on VCZ/SBEβCD solubilization and a stabilization effect on the VCZ/SBEβCD complex. The formation of binary VCZ/SBEβCD and ternary VCZ/SBEβCD/PVA complexes was confirmed by spectroscopic techniques and in silico studies. The 0.5% w/v VCZ eye drop formulations were developed consisting of 6% w/v SBEβCD and different types and concentrations of PVA. The VCZ/SBEβCD systems containing high-molecular-weight PVA prepared under freeze-thaw conditions (PVA-H hydrogel) provided high mucoadhesion, sustained release, good ex vivo permeability through the porcine cornea and no sign of irritation. Additionally, PVA-H hydrogel was effective against the filamentous fungi tested. The stability study revealed that our VCZ eye drops provide a shelf-life of more than 2.5 years at room temperature, while a shelf-life of only 3.5 months was observed for the extemporaneous Vfend® eye drops.
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7
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Kamer DDA, Kaynarca GB, Yücel E, Gümüş T. Development of gelatin/PVA based colorimetric films with a wide pH sensing range winery solid by-product (Vinasse) for monitor shrimp freshness. Int J Biol Macromol 2022; 220:627-637. [PMID: 35995178 DOI: 10.1016/j.ijbiomac.2022.08.113] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/15/2022] [Accepted: 08/16/2022] [Indexed: 11/24/2022]
Abstract
Anthocyanins were extracted from a winery solid by-product (Vinasse) and added to fish gelatin (FG) and polyvinyl alcohol (PVA) matrices to create freshness monitoring labels. Three different colorimetric indicator smart films [PWE = polyvinyl alcohol with wine extract (WE), FWE = fish gelatin with WE, and PFWE = polyvinyl alcohol and FG blended film with WE] were generated and examined for their suitability to monitor the freshness of shrimp. The mechanical and optical properties, ammonia sensitivity, and colorimetric analysis of smart films were determined. Fourier transform-infrared spectroscopy (FTIR) was used to evaluate the interaction of anthocyanins with FG and PVA and changes in the film's chemical composition with storage. The film surfaces were characterized with atomic force microscopy (AFM). The incorporation of WE enhanced the films' flexibility by providing plasticizer and surfactant properties. The PWE film showed the best color stability. The FWE film showed the least amount of total color change with exposure to ammonia gas and was deemed suitable for refrigerated food packaging. The color of all indicator films showed significant changes suggesting that PWE, FWE, and PFWE films can be utilized in the intelligent packaging application for protein-rich foods to detect spoilage.
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Affiliation(s)
- Deniz Damla Altan Kamer
- Department of Food Engineering, Faculty of Agriculture, Tekirdag Namik Kemal University, 59030 Tekirdag, Türkiye
| | - Gülce Bedis Kaynarca
- Department of Food Engineering, Faculty of Engineering, Kirklareli University, 39100 Kirklareli, Türkiye
| | - Emel Yücel
- Department of Food Engineering, Faculty of Agriculture, Tekirdag Namik Kemal University, 59030 Tekirdag, Türkiye
| | - Tuncay Gümüş
- Department of Food Engineering, Faculty of Agriculture, Tekirdag Namik Kemal University, 59030 Tekirdag, Türkiye.
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8
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The Role of Multilayer Electrospun Poly(Vinyl Alcohol)/Gelatin nanofibers loaded with Fluconazole and Cinnamaldehyde in the Potential Treatment of Fungal Keratitis. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111390] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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9
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The Use of Polymer Blends in the Treatment of Ocular Diseases. Pharmaceutics 2022; 14:pharmaceutics14071431. [PMID: 35890326 PMCID: PMC9322751 DOI: 10.3390/pharmaceutics14071431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/30/2022] [Accepted: 06/30/2022] [Indexed: 12/10/2022] Open
Abstract
The eye is an organ with limited drug access due to its anatomical and physiological barriers, and the usual forms of ocular administration are limited in terms of drug penetration, residence time, and bioavailability, as well as low patient compliance. Hence, therapeutic innovations in new drug delivery systems (DDS) have been widely explored since they show numerous advantages over conventional methods, besides delivering the content to the eye without interfering with its normal functioning. Polymers are usually used in DDS and many of them are applicable to ophthalmic use, especially biodegradable ones. Even so, it can be a hard task to find a singular polymer with all the desirable properties to deliver the best performance, and combining two or more polymers in a blend has proven to be more convenient, efficient, and cost-effective. This review was carried out to assess the use of polymer blends as DDS. The search conducted in the databases of Pubmed and Scopus for specific terms revealed that although the physical combination of polymers is largely applied, the term polymer blend still has low compliance.
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Martin CA, Radhakrishnan S, Ribelles JLG, Trentz O, Eak N, Reddy MS, Rela M, Subbaraya NK. Adipose tissue derived stromal cells in a gelatin based 3D matrix with exclusive ascorbic acid signalling emerged as a novel neural tissue engineering construct – An innovative prototype for soft tissue. Regen Biomater 2022; 9:rbac031. [PMID: 35702348 PMCID: PMC9188297 DOI: 10.1093/rb/rbac031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 03/30/2022] [Accepted: 05/05/2022] [Indexed: 11/17/2022] Open
Abstract
The current study investigated a triad, which comprises of adipose tissue derived stem cells isolated from infrapatellar fat pad and gelatin/polyvinyl alcohol (PVA)-based matrix with exclusive ascorbic acid signalling. Though, the bio-mechanical properties of the gelatin–PVA blended scaffolds in wet condition are equivalent to the ECM of soft tissues in general, in this study, the triad was tested as a model for neural tissue engineering. Apart from being cytocompatible and biocompatible, the porosity of the scaffold has been designed in such a manner that it facilitates the cell signalling and enables the exchange of nutrients and gases. The highly proliferative stem cells from Passage 2 were characterized using both, mesenchymal and embryonic stem cell markers. As an initial exploration the mesenchymal stem cells at Passage 4 were exposed to ascorbic acid and basic fibroblast growth factor signalling for neuronal differentiation in 2D environment independently. The MSCs successfully differentiated and acquired neuron specific markers related to cytoskeleton and synapses. Subsequently, three phases of experiments have been conducted on the 3D gelatin/PVA matrix to prove their efficacy, the growth of stem cells, growth of differentiated neurons and the in situ growth and differentiation of MSCs. The scaffold was conducive and directed MSCs to neuronal lineage under specific signalling. Overall, this organotypic model triad could open a new avenue in the field of soft tissue engineering as a simple and effective tissue construct.
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Affiliation(s)
- Catherine Ann Martin
- Crystal Growth Centre, Anna University, Chennai-600025, India
- Cell Laboratory, National Foundation for Liver Research, Chrompet, Chennai-600044, India
| | - Subathra Radhakrishnan
- Cell Laboratory, National Foundation for Liver Research, Chrompet, Chennai-600044, India
| | - Jose Luis Gómez Ribelles
- Center for Biomaterials and Tissue Engineering (CBIT), Universitat Politècnica de València, Camino de Vera s/n., 46022, Valencia, Spain
- Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain
| | - Omana Trentz
- MIOT Institute of Research, MIOT Hospitals, Chennai-600089, India
| | - Nivethaa Eak
- Crystal Growth Centre, Anna University, Chennai-600025, India
| | - Mettu Srinivas Reddy
- Cell Laboratory, National Foundation for Liver Research, Chrompet, Chennai-600044, India
| | - Mohamed Rela
- Cell Laboratory, National Foundation for Liver Research, Chrompet, Chennai-600044, India
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11
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Badali E, Goodarzi A, Khodayari H, Khodayari S, Habibi A, Hasanzadeh S, Khanmohammadi M. Layered dermal reconstitution through epigallocatechin 3-gallate loaded chitosan nanoparticle within enzymatically crosslinked polyvinyl alcohol/collagen fibrous mat. J Biomater Appl 2022; 37:502-516. [DOI: 10.1177/08853282221104175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Biocompatible electrospun fiber comprising bioactive substrates has potential to implant into the wound site as a reliable therapeutic approach in tissue regeneration. Here, electrospun polyvinyl alcohol conjugated tyramine (PVA-Tyr) and collagen (Col) fibrous mat containing chitosan nanoparticle loaded with epigallocatechin 3-gallate (NCs-EGCG) developed and the composite was applied to evaluate in vivo wound healing ability of fabricated wound patch. The synthesized PVA-Tyr and Col were electrospun and crosslinked through peroxidase reaction in presence of vaporized H2O2 as an electron donor which covalently proceeded conjugation of phenolic groups and could develop hybrid fibrous mat in stable structure and uniform shapes. The EGCG as anti-oxidative/inflammatory substrate was encapsulated efficiently in NCs and released in a sustained manner. The hybrid fibers seeded with adipose-derived stem cells presented appropriate biocompatibility from biophysical and biochemical viewpoints and in following wound healing ability in a full-thickness excisional animal model. Fourier transform infrared spectroscopy (FTIR) confirmed all typical absorption characteristics of PVA-Tyr and Col as well as NCs and EGCG. The results showed the perfect hydrophilic/hydrophobic ratio and good mechanical and structural characteristics including shape uniformity and porosity. Interestingly, cellular attachment and proliferation on the PVA-Tyr/Col fibers containing NCs-EGCG were higher than control samples. The histological analysis of hybrid fibrous patch could be suggested the applicability of this structure as suitable skin substitutes to repair injured skin.
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Affiliation(s)
- Elham Badali
- Faculty of Chemistry, Kharazmi University, Tehran, Iran
| | - Arash Goodarzi
- School of Medicine, Fasa University of Medical Sciences (FUMS), Fasa, Iran
| | - Hamid Khodayari
- Breast Disease Research Center, Tehran University of Medical Sciences, Tehran, Iran
- International Center for Personalized Medicine, Düsseldorf, Germany
| | - Saeed Khodayari
- Breast Disease Research Center, Tehran University of Medical Sciences, Tehran, Iran
- International Center for Personalized Medicine, Düsseldorf, Germany
| | | | - Sajad Hasanzadeh
- Skull Base Research Center, The Five Senses Institute, School of Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran
| | - Mehdi Khanmohammadi
- Skull Base Research Center, The Five Senses Institute, School of Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran
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12
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Sustained Release Biocompatible Ocular Insert Using Hot Melt Extrusion Technology: Fabrication and in-vivo evaluation. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103333] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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13
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Wu T, Dai R, Shan Z, Chen H, Woo MW, Yi J. High efficient crosslinking of gelatin and preparation of its excellent flexible composite film using deep eutectic solvent. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.04.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Osi B, Khoder M, Al-Kinani AA, Alany RG. Pharmaceutical, Biomedical and Ophthalmic Applications of Biodegradable Polymers (BDPs): Literature and Patent Review. Pharm Dev Technol 2022; 27:341-356. [PMID: 35297285 DOI: 10.1080/10837450.2022.2055063] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
In the last few decades, the interest in biodegradable materials for biomedical applications has increased significantly. Both natural and synthetic biodegradable polymers (BDPs) have been broadly explored for various biomedical applications. These include sutures and wound dressings, screws for bone fracture, scaffolds in tissue engineering, implants, and other carriers for targeted and sustained release drug delivery. Owing to their unique characteristics, including their surface charge variable copolymer block and composition and film-forming properties, BDPs have been widely used as favourable materials for ophthalmic drug delivery. Mucoadhesive BDPs have been used in ophthalmic formulations to prolong drug retention time and improve bioavailability, allowing ophthalmic controlled release systems to design. Furthermore, BDPs-based implants, microneedles, and injectable nano- and micro-particles enabled ocular posterior segment targeting and, most importantly, circumvented the need for removing the delivery systems after application. This review outlines the major advances of BDPs and highlights the latest progress of employing natural and synthetic BDPs for various biomedical applications, emphasising the treatment and management of ophthalmic conditions.
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Affiliation(s)
- Barzan Osi
- Drug Discovery, Delivery and Patient Care (DDDPC) Theme, School of Life Sciences, Pharmacy and Chemistry, Kingston University London, Kingston upon Thames, London, United Kingdom
| | - Mouhamad Khoder
- Drug Discovery, Delivery and Patient Care (DDDPC) Theme, School of Life Sciences, Pharmacy and Chemistry, Kingston University London, Kingston upon Thames, London, United Kingdom
| | - Ali A Al-Kinani
- Drug Discovery, Delivery and Patient Care (DDDPC) Theme, School of Life Sciences, Pharmacy and Chemistry, Kingston University London, Kingston upon Thames, London, United Kingdom
| | - Raid G Alany
- Drug Discovery, Delivery and Patient Care (DDDPC) Theme, School of Life Sciences, Pharmacy and Chemistry, Kingston University London, Kingston upon Thames, London, United Kingdom.,School of Pharmacy, The University of Auckland, Auckland, New Zealand
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15
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Bacterial Cellulose-A Remarkable Polymer as a Source for Biomaterials Tailoring. MATERIALS 2022; 15:ma15031054. [PMID: 35160997 PMCID: PMC8839122 DOI: 10.3390/ma15031054] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/19/2022] [Accepted: 01/27/2022] [Indexed: 12/11/2022]
Abstract
Nowadays, the development of new eco-friendly and biocompatible materials using ‘green’ technologies represents a significant challenge for the biomedical and pharmaceutical fields to reduce the destructive actions of scientific research on the human body and the environment. Thus, bacterial cellulose (BC) has a central place among these novel tailored biomaterials. BC is a non-pathogenic bacteria-produced polysaccharide with a 3D nanofibrous structure, chemically identical to plant cellulose, but exhibiting greater purity and crystallinity. Bacterial cellulose possesses excellent physicochemical and mechanical properties, adequate capacity to absorb a large quantity of water, non-toxicity, chemical inertness, biocompatibility, biodegradability, proper capacity to form films and to stabilize emulsions, high porosity, and a large surface area. Due to its suitable characteristics, this ecological material can combine with multiple polymers and diverse bioactive agents to develop new materials and composites. Bacterial cellulose alone, and with its mixtures, exhibits numerous applications, including in the food and electronic industries and in the biotechnological and biomedical areas (such as in wound dressing, tissue engineering, dental implants, drug delivery systems, and cell culture). This review presents an overview of the main properties and uses of bacterial cellulose and the latest promising future applications, such as in biological diagnosis, biosensors, personalized regenerative medicine, and nerve and ocular tissue engineering.
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16
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Suvarna P, Chaudhari P, Birangal S, Mallela LS, Roy S, Koteshwara A, Aranjani JM, Lewis SA. Voriconazole-Cyclodextrin Supramolecular Ternary Complex-Loaded Ocular Films for Management of Fungal Keratitis. Mol Pharm 2022; 19:258-273. [PMID: 34928610 DOI: 10.1021/acs.molpharmaceut.1c00746] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Fungal keratitis is one of the leading causes of ophthalmic mycosis affecting the vision due to corneal scarring. Voriconazole (VRC) is the most preferred azole antifungal agent for treating ocular mycotic infections. Ocular drug delivery is challenging due to the shorter corneal residence time of the formulation requiring frequent administration, leading to poor patient compliance. The present study aimed at improving the solubility, transcorneal permeation, and efficacy of voriconazole via the formation of cyclodextrin-based ternary complexes and incorporation of the complex into mucoadhesive films. A phase solubility study suggested a ∼14-fold improvement in VRC solubility, whereas physicochemical characterization confirmed the inclusion of VRC in the cyclodextrin inner cavity. In silico docking studies were performed to predict the docking conformation and stability of the inclusion complex. Complex-loaded films showed sustained release of voriconazole from the films and improved transcorneal permeation by ∼4-fold with an improved flux of 8.36 μg/(cm2 h) for ternary complex-loaded films compared to 1.86 μg/(cm2 h) for the pure VRC film. The 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide (MTT) and hen's egg-chorioallantoic membrane test (HET-CAM) assays confirmed that the complexes and ocular films were nonirritant and safe for ocular administration. The antifungal study performed using Aspergillus fumigatus and Fusarium oxysporum suggested improved antifungal activity compared to the pure drug film. In conclusion, the supramolecular cyclodextrin ternary complex proved to be a promising strategy for enhancing the solubility and permeability and augmenting the antifungal activity of voriconazole in the management of fungal keratitis.
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Affiliation(s)
- Pooja Suvarna
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Pinal Chaudhari
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Sumit Birangal
- Department of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Lakshmi Sruthi Mallela
- Prof. Brien Holden Eye Research Centre, LV Prasad Eye Institute, Hyderabad 500034, India
| | - Sanhita Roy
- Prof. Brien Holden Eye Research Centre, LV Prasad Eye Institute, Hyderabad 500034, India
| | - Ananthamurthy Koteshwara
- Department of Pharmaceutical Biotechnology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Jesil Mathew Aranjani
- Department of Pharmaceutical Biotechnology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Shaila Angela Lewis
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
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17
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Ahmady A, Abu Samah NH. A review: Gelatine as a bioadhesive material for medical and pharmaceutical applications. Int J Pharm 2021; 608:121037. [PMID: 34438009 DOI: 10.1016/j.ijpharm.2021.121037] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 08/10/2021] [Accepted: 08/20/2021] [Indexed: 12/23/2022]
Abstract
Bioadhesive polymers offer versatility to medical and pharmaceutical inventions. The incorporation of such materials to conventional dosage forms or medical devices may confer or improve the adhesivity of the bioadhesive systems, subsequently prolonging their residence time at the site of absorption or action and providing sustained release of actives with improved bioavailability and therapeutic outcomes. For decades, much focus has been put on scientific works to replace synthetic polymers with biopolymers with desirable functional properties. Gelatine has been considered one of the most promising biopolymers. Despite its biodegradability, biocompatibility and unique biological properties, gelatine exhibits poor mechanical and adhesive properties, limiting its end-use applications. The chemical modification and blending of gelatine with other biomaterials are strategies proposed to improve its bioadhesivity. Here we discuss the classical approaches involving a variety of polymer blends and composite systems containing gelatine, and gelatine modifications via thiolation, methacrylation, catechol conjugation, amination and other newly devised strategies. We highlight several of the latest studies on these strategies and their relevant findings.
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Affiliation(s)
- Amina Ahmady
- Department of Pharmaceutics, Faculty of Pharmacy, Universiti Teknologi MARA, Selangor Branch, Puncak Alam Campus, 42300 Puncak Alam, Malaysia
| | - Nor Hayati Abu Samah
- Department of Pharmaceutics, Faculty of Pharmacy, Universiti Teknologi MARA, Selangor Branch, Puncak Alam Campus, 42300 Puncak Alam, Malaysia.
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18
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Zulkiflee I, Fauzi MB. Gelatin-Polyvinyl Alcohol Film for Tissue Engineering: A Concise Review. Biomedicines 2021; 9:biomedicines9080979. [PMID: 34440183 PMCID: PMC8391561 DOI: 10.3390/biomedicines9080979] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 07/30/2021] [Accepted: 08/03/2021] [Indexed: 01/29/2023] Open
Abstract
The field of biomaterials has been steadily expanding as a large number of pharmaceutical and manufacturing companies invest in research in order to commercialize biomaterial products. Various three-dimensional biomaterials have been explored including film, hydrogel, sponge, microspheres etc., depending on different applications. Thus, gelatin and polyvinyl alcohol (PVA) are widely used as a natural- and synthetic-based biomaterial, respectively, for tissue engineering and clinical settings. The combination of these materials has proven its synergistic effects in wound-healing applications. Therefore, this review aims to highlight the hybrid gelatin and PVA thin film development and evaluate its potential characteristics for tissue engineering applications from existing published evidence (within year 2010–2020). The primary key factor for polymers mixing technology might improve the quality and the efficacy of the intended polymers. This review provides a concise overview of the current knowledge for hybrid gelatin and PVA with the method of fabricating and mixing technology into thin films. Additionally, the findings guided to an optimal fabrication method and scrutinised characterisation parameters of fabricated gelatin-PVA thin film. In conclusion, hybrid gelatin-PVA thin film has higher potential as a treatment for various biomedical and clinical applications.
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19
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Ulag S, Ilhan E, Demirhan R, Sahin A, Yilmaz BK, Aksu B, Sengor M, Ficai D, Titu AM, Ficai A, Gunduz O. Propolis-Based Nanofiber Patches to Repair Corneal Microbial Keratitis. Molecules 2021; 26:molecules26092577. [PMID: 33925130 PMCID: PMC8125036 DOI: 10.3390/molecules26092577] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/21/2021] [Accepted: 04/26/2021] [Indexed: 11/20/2022] Open
Abstract
In this research, polyvinyl-alcohol (PVA)/gelatin (GEL)/propolis (Ps) biocompatible nanofiber patches were fabricated via electrospinning technique. The controlled release of Propolis, surface wettability behaviors, antimicrobial activities against the S. aureus and P. aeruginosa, and biocompatibility properties with the mesenchymal stem cells (MSCs) were investigated in detail. By adding 0.5, 1, and 3 wt.% GEL into the 13 wt.% PVA, the morphological and mechanical results suggested that 13 wt.% PVA/0.5 wt.% GEL patch can be an ideal matrix for 3 and 5 wt.% propolis addition. Morphological results revealed that the diameters of the electrospun nanofiber patches were increased with GEL (from 290 nm to 400 nm) and Ps addition and crosslinking process cause the formation of thicker nanofibers. The tensile strength and elongation at break enhancement were also determined for 13 wt.% PVA/0.5 wt.% GEL/3 wt.% Ps patch. Propolis was released quickly in the first hour and arrived at a plateau. Cell culture and contact angle results confirmed that the 3 wt.% addition of propolis reinforced mesenchymal stem cell proliferation and wettability properties of the patches. The antimicrobial activity demonstrated that propolis loaded patches had antibacterial activity against the S. aureus, but for P. aeruginosa, more studies should be performed.
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Affiliation(s)
- Songul Ulag
- Center for Nanotechnology & Biomaterials Application and Research (NBUAM), Marmara University, 34722 Istanbul, Turkey; (S.U.); (E.I.); (R.D.); (M.S.)
- Metallurgical and Materials Engineering, Institute of Pure and Applied Sciences, Marmara University, 34722 Istanbul, Turkey
| | - Elif Ilhan
- Center for Nanotechnology & Biomaterials Application and Research (NBUAM), Marmara University, 34722 Istanbul, Turkey; (S.U.); (E.I.); (R.D.); (M.S.)
- Department of Bioengineering, Institute of Pure and Applied Sciences, Marmara University, 34722 Istanbul, Turkey
| | - Ramazan Demirhan
- Center for Nanotechnology & Biomaterials Application and Research (NBUAM), Marmara University, 34722 Istanbul, Turkey; (S.U.); (E.I.); (R.D.); (M.S.)
| | - Ali Sahin
- Department of Biochemistry, Faculty of Medicine, Marmara University, 34718 Istanbul, Turkey; (A.S.); (B.K.Y.)
- Genetic and Metabolic Diseases Research and Investigation Center, Marmara University, 34722 Istanbul, Turkey
| | - Betul Karademir Yilmaz
- Department of Biochemistry, Faculty of Medicine, Marmara University, 34718 Istanbul, Turkey; (A.S.); (B.K.Y.)
- Genetic and Metabolic Diseases Research and Investigation Center, Marmara University, 34722 Istanbul, Turkey
| | - Burak Aksu
- Department of Medical Microbiology, Marmara University School of Medicine, 34854 Istanbul, Turkey;
| | - Mustafa Sengor
- Center for Nanotechnology & Biomaterials Application and Research (NBUAM), Marmara University, 34722 Istanbul, Turkey; (S.U.); (E.I.); (R.D.); (M.S.)
- Metallurgical and Materials Engineering Faculty of Technology, Marmara University, 34722 Istanbul, Turkey
| | - Denisa Ficai
- Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 060042 Bucharest, Romania;
- National Centre for Micro- and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania
| | - Aurel Mihail Titu
- Industrial Engineering and Management Department, Faculty of Engineering, Lucian Blaga University of Sibiu, 550025 Sibiu, Romania;
- Academy of Romanian Scientists, 050094 Bucharest, Romania
| | - Anton Ficai
- Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 060042 Bucharest, Romania;
- National Centre for Micro- and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania
- Academy of Romanian Scientists, 050094 Bucharest, Romania
- Correspondence: (A.F.); (O.G.)
| | - Oguzhan Gunduz
- Center for Nanotechnology & Biomaterials Application and Research (NBUAM), Marmara University, 34722 Istanbul, Turkey; (S.U.); (E.I.); (R.D.); (M.S.)
- Metallurgical and Materials Engineering Faculty of Technology, Marmara University, 34722 Istanbul, Turkey
- Correspondence: (A.F.); (O.G.)
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20
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Cui X, Li X, Xu Z, Guan X, Ma J, Ding D, Zhang W. Fabrication and Characterization of Chitosan/Poly(Lactic-Co-glycolic Acid) Core-Shell Nanoparticles by Coaxial Electrospray Technology for Dual Delivery of Natamycin and Clotrimazole. Front Bioeng Biotechnol 2021; 9:635485. [PMID: 33748084 PMCID: PMC7973235 DOI: 10.3389/fbioe.2021.635485] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 01/26/2021] [Indexed: 02/02/2023] Open
Abstract
Natamycin (NAT) is the drug of choice for the treatment of fungal keratitis (FK). However, its inherent shortcomings, such as poor solubility, high dosing frequency, and long treatment cycle, need to be urgently addressed by designing a new delivery to widen its clinical utility. Growing research has confirmed that clotrimazole (CLZ) plays a significant role in fungal growth inhibition. Hence, coaxial electrospray (CO-ES) technology is used herein to prepare nano-systems with an average hydrodynamic particle size of 309-406 nm for the co-delivery of NAT and CLZ in chitosan (CTS) and poly(lactic-co-glycolic acid) (PLGA). The resulting NAT/CLZ@CTS/PLGA formulations were characterized by a transmission electron microscope (TEM) and in vitro release test. The results show that the formulations had obvious core-shell structures, uniform particle distribution, and also can sustain the release of drugs over 36 h. Furthermore, in vitro hemolysis, in vivo corneal irritation test, local allergenic test, and antifungal activity analyses are performed to evaluate the safety and efficiency of the formulations. Thus, good biosafety along with a significant anti-candidiasis effect are found in the NAT/CLZ@CTS/PLGA nanoparticles (NPs). Taken together, the results suggest that this design may provide a promising drug delivery system and a new option for the treatment of FK.
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Affiliation(s)
- Xiaoming Cui
- College of Pharmacy, Weifang Medical University, Weifang, China
| | - Xiaoli Li
- Department of Pharmacy, Weifang Traditional Chinese Hospital, Weifang, China
| | - Zhilu Xu
- College of Pharmacy, Weifang Medical University, Weifang, China
| | - Xiuwen Guan
- College of Pharmacy, Weifang Medical University, Weifang, China.,Collaborative Innovation Center for Target Drug Delivery System, Weifang Medical University, Weifang, China.,Shandong Engineering Research Center for Smart Materials and Regenerative Medicine, Weifang Medical University, Weifang, China
| | - Jinlong Ma
- College of Pharmacy, Weifang Medical University, Weifang, China.,Collaborative Innovation Center for Target Drug Delivery System, Weifang Medical University, Weifang, China.,Shandong Engineering Research Center for Smart Materials and Regenerative Medicine, Weifang Medical University, Weifang, China
| | - Dejun Ding
- College of Pharmacy, Weifang Medical University, Weifang, China.,Collaborative Innovation Center for Target Drug Delivery System, Weifang Medical University, Weifang, China.,Shandong Engineering Research Center for Smart Materials and Regenerative Medicine, Weifang Medical University, Weifang, China
| | - Weifen Zhang
- College of Pharmacy, Weifang Medical University, Weifang, China.,Collaborative Innovation Center for Target Drug Delivery System, Weifang Medical University, Weifang, China.,Shandong Engineering Research Center for Smart Materials and Regenerative Medicine, Weifang Medical University, Weifang, China
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21
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Zidan G, Greene CA, Etxabide A, Rupenthal ID, Seyfoddin A. Gelatine-based drug-eluting bandage contact lenses: Effect of PEGDA concentration and manufacturing technique. Int J Pharm 2021; 599:120452. [PMID: 33676990 DOI: 10.1016/j.ijpharm.2021.120452] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 02/25/2021] [Accepted: 02/27/2021] [Indexed: 01/21/2023]
Abstract
Drug-eluting bandage contact lenses (BCLs) have been widely studied as an alternative to eye drops due to their ability to increase the drug residence time and bioavailability as well as improve patient compliance. While silicone hydrogel polymers are commonly used in drug-eluting BCLs due to their transparency, mechanical properties and high oxygen permeability, gelatine hydrogels are also clear, flexible and have high oxygen permeability and may therefore be suitable contact lens materials. Moreover, the rheological properties of gelatine hydrogels allow their use as inks in extrusion-based 3D printers, therefore opening the door to a wide range of applications. Drug-loaded gelatine methacryloyl (GelMA) BCLs with different concentrations of poly (ethylene glycol) diacrylate (PEGDA) were prepared using solvent casting and 3D printing. The prepared lenses were characterised for their swelling ratio, in vitro degradation, and drug release properties. The results showed that the incorporation of 10% PEGDA improved the lenses' resistance to handling and protected them during degradation testing, reduced the swelling ratio and prolonged the release of dexamethasone (DEX). Both techniques were deemed suitable to use in the manufacturing of drug-eluting BCLs noting that the optimal formulation may vary according to the preparation technique utilised.
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Affiliation(s)
- Ghada Zidan
- Drug Delivery Research Group, School of Science, Auckland University of Technology, New Zealand
| | - Carol A Greene
- Department of Ophthalmology, New Zealand National Eye Centre, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - Alaitz Etxabide
- ALITEC Research Group, Department of Agronomy, Biotechnology and Food, School of Agricultural Engineering, Public University of Navarre (upna/nup), 31006 Pamplona-Iruña, Spain; School of Chemical Sciences 302, University of Auckland, 23 Symonds Street, Private Bag 92019, Auckland, New Zealand
| | - Ilva D Rupenthal
- Buchanan Ocular Therapeutics Unit, Department of Ophthalmology, New Zealand National Eye Centre, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - Ali Seyfoddin
- Drug Delivery Research Group, School of Science, Auckland University of Technology, New Zealand.
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22
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Kim D, Lee H, Kwon S, Sung YJ, Song WK, Park S. Bilayer Hydrogel Sheet-Type Intraocular Microrobot for Drug Delivery and Magnetic Nanoparticles Retrieval. Adv Healthc Mater 2020; 9:e2000118. [PMID: 32431072 DOI: 10.1002/adhm.202000118] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 04/08/2020] [Indexed: 12/27/2022]
Abstract
By virtue of minimum invasiveness and driving ability using a magnetic field, drug delivery with the aid of a microrobot has an inherent potential for targeted treatment for the eye. The use of microrobots, however, has the limitation of leaving magnetic nanoparticles (MNPs) in the eye that can cause side effects. In this study, a bilayer hydrogel microrobot capable of retrieving MNPs after drug delivery is proposed that overcomes the limitations of existing microrobots. The bilayer hydrogel microrobot is composed of an MNPs layer and a therapeutic layer. Upon applying an alternating magnetic field (AMF) at the target point, the therapeutic layer is dissolved to deliver drug particles, and then the MNPs layer can be retrieved using a magnetic field. The targeting and MNPs retrieval tests validate the drug delivery and MNPs retrieval ability of the microrobot. The ex vivo bovine vitreous and in vitro cell tests demonstrate the potential for the vitreous migration of the microrobot and the therapeutic effect against retinoblastoma Y79 cancer cells. This bilayer hydrogel sheet-type intraocular microrobot provides a new drug delivery paradigm that overcomes the limitations of microrobot by maintaining the advantages of conventional microrobots in delivering drugs to the eye and retrieving MNPs after drug delivery.
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Affiliation(s)
- Dong‐In Kim
- Department of Robotics EngineeringDaegu Gyeongbuk Institute of Science and Technology Daegu 42988 Republic of Korea
| | - Hyoryong Lee
- Department of Robotics EngineeringDaegu Gyeongbuk Institute of Science and Technology Daegu 42988 Republic of Korea
| | - Su‐Hyun Kwon
- Department of Robotics EngineeringDaegu Gyeongbuk Institute of Science and Technology Daegu 42988 Republic of Korea
| | - Young Je Sung
- Department of OphthalmologyCHA Bundang Medical CenterCHA University College of Medicine Bundang‐gu Seongnam Gyunggido 13496 Republic of Korea
| | - Won Kyung Song
- Department of OphthalmologyCHA Bundang Medical CenterCHA University College of Medicine Bundang‐gu Seongnam Gyunggido 13496 Republic of Korea
| | - Sukho Park
- Department of Robotics EngineeringDaegu Gyeongbuk Institute of Science and Technology Daegu 42988 Republic of Korea
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23
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Daza JHU, Righetto GM, Chaud MV, da Conceição Amaro Martins V, Lopes Baratella da Cunha Camargo I, Maria de Guzzi Plepis A. PVA/anionic collagen membranes as drug carriers of ciprofloxacin hydrochloride with sustained antibacterial activity and potential use in the treatment of ulcerative keratitis. J Biomater Appl 2020; 35:301-312. [PMID: 32571170 DOI: 10.1177/0885328220931733] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Devices such as contact lenses and collagen shields have been used to improve the antibiotic bioavailability of eye drops formulations in the treatment of ulcerative keratitis. Nevertheless, these devices are not sustained drug delivery systems, and a combination with eye drops is necessary. In animal patients, it requires constant supervision by trained personnel to avoid device loss, which increases the cost of treatment. In this study, PVA/anionic collagen membranes containing ciprofloxacin or tobramycin were prepared using two different methodologies, and the release, physical and antimicrobial properties were evaluated. The membrane containing ciprofloxacin was selected as a sustained drug delivery system with antibacterial activity against Staphylococcus aureus and Escherichia coli during 48 h. Despite to be opaque, due to its heterogeneous morphology, this membrane had the adequate mechanical strength, water content, hydrophilicity, water vapor permeability, and surface pH to interact with cornea without causing discomfort. In the surface of this membrane it was observed dispersed collagen fibrils which could serve as a substrate for corneal proteinases, contributing to the reduction in stromal damage and enhancing the epithelium regeneration. These results encourage the idea these membranes are new cost-effective and safe alternatives to treat corneal ulcers in animal patients.
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Affiliation(s)
- Jorge Humberto Unas Daza
- Laboratory of Biochemistry and Biomaterials, São Carlos Institute of Chemistry, University of São Paulo, São Carlos, Brazil
| | - Gabriela Marinho Righetto
- Laboratory of Epidemiology and Molecular Microbiology (LEMiMo), São Carlos Institute of Physics, University of São Paulo, São Carlos, Brazil
| | - Marco Vinicius Chaud
- Laboratory of Biomaterial and Nanotechnology, University of Sorocaba, Sorocaba, Brazil
| | | | | | - Ana Maria de Guzzi Plepis
- Laboratory of Biochemistry and Biomaterials, São Carlos Institute of Chemistry, University of São Paulo, São Carlos, Brazil
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24
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Erichev VP, Petrov SY, Volzhanin AV, Ghazaryan SA. [Continuous anti-glaucoma drug therapy as a risk factor of dry eye]. Vestn Oftalmol 2020; 135:117-123. [PMID: 32015316 DOI: 10.17116/oftalma2019135061117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A preservative is a mandatory component of the eye drops designed to prevent microbial contamination in an opened bottle. Most of the preservative agents are either detergents, or oxidants; the most widely used and well-studied preservative - benzalkonium chloride - is a detergent. Due to regular usage of glaucoma eye drops, cytotoxic impact of the preservatives on anterior eye surface is considered the principal cause of its pathology, which leads to a decrease in quality of life. The high cost of preservative-free pharmacological forms and the complicated process of developing new preservatives make the usage of eye drops with minimal required concentration of preservative agent and a moistening component a good compromise. The most commonly utilized moistening component is polyvinyl alcohol - synthetic polymeric hydrogel, which is also used in artificial tears and bioengineering.
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Affiliation(s)
- V P Erichev
- Research Institute of Eye Diseases, 11A Rossolimo St., Moscow, Russian Federation, 119021
| | - S Yu Petrov
- Research Institute of Eye Diseases, 11A Rossolimo St., Moscow, Russian Federation, 119021
| | - A V Volzhanin
- Research Institute of Eye Diseases, 11A Rossolimo St., Moscow, Russian Federation, 119021
| | - S A Ghazaryan
- Yerevan State Medical University after Mkhitar Heratsi, 2 Koryuna St., Erevan, Republic of Armenia, 0025
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25
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Ahlawat J, Kumar V, Gopinath P. Carica papaya loaded poly (vinyl alcohol)-gelatin nanofibrous scaffold for potential application in wound dressing. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 103:109834. [DOI: 10.1016/j.msec.2019.109834] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 03/31/2019] [Accepted: 05/29/2019] [Indexed: 01/18/2023]
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26
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Abilova G, Abilkаrіm A, Irmukhametova G. Preparation and characterization of thermally crosslinked films based on chitosan and poly(2-ethyl-2-oxasoline). CHEMICAL BULLETIN OF KAZAKH NATIONAL UNIVERSITY 2019. [DOI: 10.15328/cb1085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Сrosslinked films based on chitosan (СHI) and poly(2-ethyl-2-oxazoline) (POZ) were prepared by thermal crosslinking. The optimal synthesis conditions and the composition of the film compositions were determined. The highest yield of the gel fraction was observed for CHI:POZ (80:20) films with a crosslinking time of 4 h at a temperature of 100°С. The main physicochemical properties of films based on pure CHI and CHI:POZ have been studied. The film swelling ability was reduced with the increase of poly(2-ethyl-2-oxazolin) content. The formation of crosslinks between N,N’-methylene-bis-acrylamide and functional amine groups of chitosan was proposed based on IR-spectroscopy data.
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27
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Kurysheva NI. [Selective α2-agonists in the treatment of glaucoma: pharmacology, efficacy and safety]. Vestn Oftalmol 2019; 135:144-150. [PMID: 31215546 DOI: 10.17116/oftalma2019135021144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Glaucoma is the main cause of irreversible blindness in the world. Among the hypotensive eye drops, an important place belongs to the selective α2-adrenergic receptor antagonist brimonidine. This part of the review focuses on key pharmacological and therapeutic characteristics of brimonidine and its mode of action. The article also discusses the side effects of brimonidine and the methods of their prevention.
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Affiliation(s)
- N I Kurysheva
- Ophthalmological Center of the Federal Medical-Biological Agency of the Russian Federation State Research Center ,Burnasyan Federal Medical Biophysical Center of the Federal Medical-Biological Agency, Academy of Postgraduate Education under FSBU FSCC of FMBA of Russia, Department of Opthalmology, 15 Gamalei St., Moscow, Russian Federation, 123098
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28
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Piccirillo G, Ditaranto MV, Feuerer NFS, Carvajal Berrio DA, Brauchle EM, Pepe A, Bochicchio B, Schenke-Layland K, Hinderer S. Non-invasive characterization of hybrid gelatin:poly-l-lactide electrospun scaffolds using second harmonic generation and multiphoton imaging. J Mater Chem B 2018; 6:6399-6412. [PMID: 32254648 DOI: 10.1039/c8tb02026d] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hybrid scaffolds composed of synthetic polymers and naturally occurring components have become more relevant in the field of tissue engineering and regenerative medicine. Synthetic polymers are responsible for scaffold durability, strength and structural integrity; however, often do not provide biological signals. Introducing a biological component leads to more advanced and biocompatible scaffolds. In order to use these scaffolds as implants, a deeper knowledge of material characteristics and the impact of the biological component on the scaffold mechanical properties are required. Furthermore, it is necessary to implement fast, easy and non-invasive methods to determine material characteristics. In this work, we aimed to generate gelatin-poly-l-lactide (PLA) hybrids via electrospinning with defined, controllable and tunable scaffold characteristics. Using Raman microspectroscopy, we demonstrated the effectiveness of the cross-linking reaction and evaluated the increasing PLA content in the hybrid scaffolds with a non-invasive approach. Using multiphoton microscopy, we showed that gelatin fibers electrospun from a fluorinated solvent exhibit a second harmonic generation (SHG) signal typical for collagen-like structures. Compared to pure gelatin, where the SHG signal vanishes after cross-linking, the signal could be preserved in the hybrid scaffolds even after cross-linking. Furthermore, we non-invasively imaged cellular growth of human dermal fibroblasts on the hybrid electrospun scaffolds and performed fluorescence lifetime imaging microscopy on the cell-seeded hybrids, where we were able to discriminate between cells and scaffolds. Here, we successfully employed non-invasive methods to evaluate scaffold characteristics and investigate cell-material interactions.
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29
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Raveendran S, Rochani AK, Maekawa T, Kumar DS. Smart Carriers and Nanohealers: A Nanomedical Insight on Natural Polymers. MATERIALS (BASEL, SWITZERLAND) 2017; 10:E929. [PMID: 28796191 PMCID: PMC5578295 DOI: 10.3390/ma10080929] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 07/24/2017] [Accepted: 07/31/2017] [Indexed: 02/07/2023]
Abstract
Biodegradable polymers are popularly being used in an increasing number of fields in the past few decades. The popularity and favorability of these materials are due to their remarkable properties, enabling a wide range of applications and market requirements to be met. Polymer biodegradable systems are a promising arena of research for targeted and site-specific controlled drug delivery, for developing artificial limbs, 3D porous scaffolds for cellular regeneration or tissue engineering and biosensing applications. Several natural polymers have been identified, blended, functionalized and applied for designing nanoscaffolds and drug carriers as a prerequisite for enumerable bionano technological applications. Apart from these, natural polymers have been well studied and are widely used in material science and industrial fields. The present review explains the prominent features of commonly used natural polymers (polysaccharides and proteins) in various nanomedical applications and reveals the current status of the polymer research in bionanotechnology and science sectors.
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Affiliation(s)
- Sreejith Raveendran
- Bio Nano Electronics Research Centre, Graduate School of Interdisciplinary New Science, Toyo University, Saitama 350-8585, Japan.
| | - Ankit K Rochani
- Bio Nano Electronics Research Centre, Graduate School of Interdisciplinary New Science, Toyo University, Saitama 350-8585, Japan.
| | - Toru Maekawa
- Bio Nano Electronics Research Centre, Graduate School of Interdisciplinary New Science, Toyo University, Saitama 350-8585, Japan.
| | - D Sakthi Kumar
- Bio Nano Electronics Research Centre, Graduate School of Interdisciplinary New Science, Toyo University, Saitama 350-8585, Japan.
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30
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Pescina S, Macaluso C, Gioia GA, Padula C, Santi P, Nicoli S. Mydriatics release from solid and semi-solid ophthalmic formulations using different in vitro methods. Drug Dev Ind Pharm 2017; 43:1472-1479. [PMID: 28426341 DOI: 10.1080/03639045.2017.1318910] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The aim of the present paper was the development of semi-solid (hydrogels) and solid (film) ophthalmic formulations for the controlled release of two mydriatics: phenylephrine and tropicamide. The formulations - based on polyvinylalcohol and hyaluronic acid - were characterized, and release studies were performed with three different in vitro set-ups, i.e. Franz-type diffusion cell, vial method and inclined plane; for comparison, a solution and a commercial insert, both clinically used to induce mydriasis, were evaluated. Both gels and film allowed for a controlled release of drugs, appearing a useful alternative for mydriatics administration. However, the release kinetic was significantly influenced by the method used, highlighting the need for optimization and standardization of in vitro models for the evaluation of drug release from ophthalmic dosage forms.
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Affiliation(s)
- Silvia Pescina
- a Food and Drug Department , University of Parma , Parma , Italy
| | - Claudio Macaluso
- b Ophthalmology Department, DiMeC , University of Parma , Parma , Italy
| | | | - Cristina Padula
- a Food and Drug Department , University of Parma , Parma , Italy
| | - Patrizia Santi
- a Food and Drug Department , University of Parma , Parma , Italy
| | - Sara Nicoli
- a Food and Drug Department , University of Parma , Parma , Italy
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Al-Kahtani AA. Photocatalytic Degradation of Rhodamine B Dye in Wastewater Using Gelatin/CuS/PVA Nanocomposites under Solar Light Irradiation. ACTA ACUST UNITED AC 2017. [DOI: 10.4236/jbnb.2017.81005] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Sun X, Yu Z, Cai Z, Yu L, Lv Y. Voriconazole Composited Polyvinyl Alcohol/Hydroxypropyl-β-Cyclodextrin Nanofibers for Ophthalmic Delivery. PLoS One 2016; 11:e0167961. [PMID: 27974859 PMCID: PMC5156571 DOI: 10.1371/journal.pone.0167961] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 11/23/2016] [Indexed: 12/25/2022] Open
Abstract
Voriconazole (VRC) incorporated in composited polyvinyl alcohol (PVA)/hydroxypropyl-β-cyclodextrin (HPβCD) blended nanofibers were produced via electrospinning for efficient ophthalmic delivery. The VRC loading capacity increased with increasing HPβCD content. The optimal solution for electrospinning consisted of 8% (w/v) PVA, 4% (w/v) HPβCD and 0.5% (w/v) VRC. The nanofibers exhibited bead-free average fiber diameters of 307±31 nm and VRC was released in vitro in a sustained manner. The VRC nanofibers were characterized by infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). The proton nuclear magnetic resonance (1H-NMR) was used to analyze the molar ratio of HPβCD/VRC in the nanofibers. Compared with a VRC solution, the nanofibers significantly prolonged the half life, and increased the bioavailability of VRC in rabbit tears. No obvious signs of irritation were observed after application in the conjunctival sac. VRC nanofibers are promising for ophthalmic drug delivery and further pharmacodynamics studies are needed.
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Affiliation(s)
- Xiaoyi Sun
- Department of Pharmacy, Zhejiang University City College, Hangzhou, Zhejiang, China
| | - Zhenwei Yu
- Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Zhengyuan Cai
- Department of Pharmacy, Zhejiang University City College, Hangzhou, Zhejiang, China
| | - Lingyan Yu
- Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yuanyuan Lv
- Department of Pharmacy, Zhejiang University City College, Hangzhou, Zhejiang, China
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Meshram JV, Koli VB, Phadatare MR, Pawar SH. Anti-microbial surfaces: An approach for deposition of ZnO nanoparticles on PVA-Gelatin composite film by screen printing technique. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 73:257-266. [PMID: 28183607 DOI: 10.1016/j.msec.2016.12.043] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 11/18/2016] [Accepted: 12/04/2016] [Indexed: 12/14/2022]
Abstract
Initially micro-organisms get exposed to the surfaces, this demands development of anti-microbial surfaces to inhibit their proliferation. Therefore, herein, we attempt screen printing technique for development of PVA-GE/ZnO nanocomposite (PG/ZnO) films. The synthesis of PG/ZnO nanocomposite includes two steps as: (i) Coating of Zinc Oxide nanoparticles (ZnO NPs) by poly ethylene glycol in order to be compatible with organic counterparts. (ii) Deposition of coated nanoparticles on the PG film surface. The results suggest the enhancement in anti-microbial activity of PG/ZnO nanocomposite over pure ZnO NPs against both Gram positive Bacillus subtilis and Gram negative Escherichia coli from zone of inhibition. The uniformity in deposition is further confirmed by scanning electron microscopy (SEM) images. The phase identification of ZnO NPs and formation of PG/ZnO nanocomposite has been confirmed by X-ray diffraction (XRD) analysis and UV-vis spectroscopy (UV-vis). The Attenuated total reflection Spectroscopy (ATR) analysis indicates the ester bond between PVA and gelatin molecules. The thermal stability of nanocomposite is studied by thermogravimetric analysis (TGA) revealing increase in crystallinity due to ZnO NPs which could be utilized to inhibit the growth of micro-organisms. The tensile strength is found to be higher and percent elongation is double of PG/ZnO nanocomposite than PG composite film.
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Affiliation(s)
- J V Meshram
- Center for Interdisciplinary Research, D. Y. Patil University, Kolhapur 416006, Maharashtra, India
| | - V B Koli
- Center for Interdisciplinary Research, D. Y. Patil University, Kolhapur 416006, Maharashtra, India
| | - M R Phadatare
- Center for Interdisciplinary Research, D. Y. Patil University, Kolhapur 416006, Maharashtra, India
| | - S H Pawar
- Center for Interdisciplinary Research, D. Y. Patil University, Kolhapur 416006, Maharashtra, India.
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Zhang W, Li X, Ye T, Chen F, Yu S, Chen J, Yang X, Yang N, Zhang J, Liu J, Pan W, Kong J. Nanostructured lipid carrier surface modified with Eudragit RS 100 and its potential ophthalmic functions. Int J Nanomedicine 2014; 9:4305-15. [PMID: 25246787 PMCID: PMC4166257 DOI: 10.2147/ijn.s63414] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
This study was carried out to evaluate the ocular performance of a cationic Eudragit (EDU) RS 100-coated nanostructured lipid carrier (NLC). The genistein encapsulated NLC (GEN-NLC) was produced using the melt-emulsification technique followed by surface absorption of EDU RS 100. The EDU RS 100 increased the surface zeta potential from -7.46 mV to +13.60 mV, by uniformly forming a spherical coating outside the NLC surface, as shown by transmission electron microscopy images. The EDU RS 100 on the NLC surface effectively improved the NLC stability by inhibiting particle size growth. The obtained EDU RS 100-GEN-NLC showed extended precorneal clearance and a 1.22-fold increase in AUC (area under the curve) compared with the bare NLC in a Gamma scintigraphic evaluation. The EDU RS 100 modification also significantly increased corneal penetration producing a 3.3-fold increase in apparent permeability coefficients (Papp) compared with references. Draize and cytotoxicity testing confirmed that the developed EDU RS 100-GEN-NLC was nonirritant to ocular tissues and nontoxic to corneal cells. These results indicate that the NLC surface modified by EDU RS 100 significantly improves the NLC properties and exhibits many advantages for ocular use.
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Affiliation(s)
- Wenji Zhang
- Department of Pharmaceutics, School of Traditional Chinese Medicine, Shenyang Pharmaceutical University, Shenyang, People's Republic of China ; Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Xuedong Li
- Department of Ophthalmology, The Fourth Affiliated Hospital of China Medical University, Eye Hospital of China Medical University, Key Lens Research Laboratory of Liaoning Province, Shenyang, People's Republic of China
| | - Tiantian Ye
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Fen Chen
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Shihui Yu
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Jianting Chen
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Xinggang Yang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Na Yang
- Department of Ophthalmology, The Fourth Affiliated Hospital of China Medical University, Eye Hospital of China Medical University, Key Lens Research Laboratory of Liaoning Province, Shenyang, People's Republic of China
| | - Jinsong Zhang
- Department of Ophthalmology, The Fourth Affiliated Hospital of China Medical University, Eye Hospital of China Medical University, Key Lens Research Laboratory of Liaoning Province, Shenyang, People's Republic of China
| | - Jinlu Liu
- Department of Ophthalmology, The Fourth Affiliated Hospital of China Medical University, Eye Hospital of China Medical University, Key Lens Research Laboratory of Liaoning Province, Shenyang, People's Republic of China
| | - Weisan Pan
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Jun Kong
- Department of Ophthalmology, The Fourth Affiliated Hospital of China Medical University, Eye Hospital of China Medical University, Key Lens Research Laboratory of Liaoning Province, Shenyang, People's Republic of China
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Rose JB, Pacelli S, Haj AJE, Dua HS, Hopkinson A, White LJ, Rose FRAJ. Gelatin-Based Materials in Ocular Tissue Engineering. MATERIALS (BASEL, SWITZERLAND) 2014; 7:3106-3135. [PMID: 28788609 PMCID: PMC5453355 DOI: 10.3390/ma7043106] [Citation(s) in RCA: 198] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 03/17/2014] [Accepted: 03/24/2014] [Indexed: 12/13/2022]
Abstract
Gelatin has been used for many years in pharmaceutical formulation, cell culture and tissue engineering on account of its excellent biocompatibility, ease of processing and availability at low cost. Over the last decade gelatin has been extensively evaluated for numerous ocular applications serving as cell-sheet carriers, bio-adhesives and bio-artificial grafts. These different applications naturally have diverse physical, chemical and biological requirements and this has prompted research into the modification of gelatin and its derivatives. The crosslinking of gelatin alone or in combination with natural or synthetic biopolymers has produced a variety of scaffolds that could be suitable for ocular applications. This review focuses on methods to crosslink gelatin-based materials and how the resulting materials have been applied in ocular tissue engineering. Critical discussion of recent innovations in tissue engineering and regenerative medicine will highlight future opportunities for gelatin-based materials in ophthalmology.
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Affiliation(s)
- James B Rose
- School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK.
| | - Settimio Pacelli
- Department of Drug Chemistry and Technologies, "Sapienza" University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy.
| | - Alicia J El Haj
- Institute for Science and Technology in Medicine, Keele University, Stoke-on-Trent ST4 7QB, UK.
| | - Harminder S Dua
- Academic Ophthalmology, Division of Clinical Neuroscience, University of Nottingham, Nottingham NG7 2RD, UK.
| | - Andrew Hopkinson
- Academic Ophthalmology, Division of Clinical Neuroscience, University of Nottingham, Nottingham NG7 2RD, UK.
| | - Lisa J White
- School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK.
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Probing influence of methodological variation on active loading of acetazolamide into nanoliposomes: Biophysical, in vitro, ex vivo, in vivo and rheological investigation. Int J Pharm 2014; 461:82-8. [DOI: 10.1016/j.ijpharm.2013.11.034] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Revised: 11/14/2013] [Accepted: 11/18/2013] [Indexed: 11/17/2022]
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Gubskaya AV, Khan IJ, Valenzuela LM, Lisnyak YV, Kohn J. Investigating the Release of a Hydrophobic Peptide from Matrices of Biodegradable Polymers: An Integrated Method Approach. POLYMER 2013; 54:3806-3820. [PMID: 24039300 DOI: 10.1016/j.polymer.2013.05.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The objectives of this work were: (1) to select suitable compositions of tyrosine-derived polycarbonates for controlled delivery of voclosporin, a potent drug candidate to treat ocular diseases, (2) to establish a structure-function relationship between key molecular characteristics of biodegradable polymer matrices and drug release kinetics, and (3) to identify factors contributing in the rate of drug release. For the first time, the experimental study of polymeric drug release was accompanied by a hierarchical sequence of three computational methods. First, suitable polymer compositions used in subsequent neural network modeling were determined by means of response surface methodology (RSM). Second, accurate artificial neural network (ANN) models were built to predict drug release profiles for fifteen polymers located outside the initial design space. Finally, thermodynamic properties and hydrogen-bonding patterns of model drug-polymer complexes were studied using molecular dynamics (MD) technique to elucidate a role of specific interactions in drug release mechanism. This research presents further development of methodological approaches to meet challenges in the design of polymeric drug delivery systems.
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Affiliation(s)
- Anna V Gubskaya
- New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, Piscataway, NJ 08854-8087, USA
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Pawar P, Katara R, Mishra S, Majumdar DK. Topical ocular delivery of fluoroquinolones. Expert Opin Drug Deliv 2013; 10:691-711. [DOI: 10.1517/17425247.2013.772977] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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39
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Khurana G, Arora S, Pawar PK. Ocular insert for sustained delivery of gatifloxacin sesquihydrate: Preparation and evaluations. Int J Pharm Investig 2012; 2:70-7. [PMID: 23119235 PMCID: PMC3482768 DOI: 10.4103/2230-973x.100040] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Background: Many polymeric systems have been used to fabricate ocular inserts for improve ocular bioavailability and retention to drug of which matrix systems have shown advantages of reduce dosing frequency and increased corneal residence time. The objective of the present investigation was to prepare and evaluate ocular inserts of gatifloxacin. Materials and Methods: Ocular insert was made from an aqueous dispersion of gatifloxacin, sodium alginate, polyvinyl alcohol, and glycerin by solvent casting method. Ocular insert (5.5 mm) was cross-linked by CaCl2 and was coated with Eudragit RL-100 or Eudragit RS-100. The ocular inserts were characterized for thickness; uniformity of weight, drug content uniformity, % moisture absorption or moisture loss, and surface pH. The in vitro diffusion studies were carried out by putting insert on Millipore membrane filter (0.8 μm) fixed between donor and receptor compartment of an all glass modified Franz diffusion cell. Results: The thickness and drug content of ocular insert were found in the range of 0.11 ± 0.003 to 0.24 ± 0.010 mm and 0.718 ± 0.002 to 0.867 ± 0.007 mg, respectively. The surface pH, % moisture absorption or moisture loss and weight variation values were obtained in satisfactory range. The cross-linked ocular insert coated with Eudragit RL-100 shows maximum drug permeation i.e. 89.53 % ± 0.43 at 11 h. The stability studies suggest that all ocular insert remained stable, showed lesser degradation rate and maximum shelf life. Conclusion: Ocular inserts of gatifloxacin were prepared successfully by using solvent casting method for sustained drug delivery. The cross-linked and Eudragit RL-100 coated ocular insert of gatifloxacin provides better in vitro drug release and sustained upto 11 h.
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Affiliation(s)
- Gaurav Khurana
- Chitkara College of Pharmacy, Chitkara University, Chandigarh-Patiala National Highway, Rajpura, Patiala, Punjab, India
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Wright B, Mi S, Connon CJ. Towards the use of hydrogels in the treatment of limbal stem cell deficiency. Drug Discov Today 2012; 18:79-86. [PMID: 22846850 PMCID: PMC4046643 DOI: 10.1016/j.drudis.2012.07.012] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Revised: 06/27/2012] [Accepted: 07/20/2012] [Indexed: 12/13/2022]
Abstract
Corneal blindness caused by limbal stem cell deficiency (LSCD) is a prevailing disorder worldwide. Clinical outcomes for LSCD therapy using amniotic membrane (AM) are unpredictable. Hydrogels can eliminate limitations of standard therapy for LSCD, because they present all the advantages of AM (i.e. biocompatibility, inertness and a biodegradable structure) but unlike AM, they are structurally uniform and can be easily manipulated to alter mechanical and physical properties. Hydrogels can be delivered with minimum trauma to the ocular surface and do not require extensive serological screening before clinical application. The hydrogel structure is also amenable to modifications which direct stem cell fate. In this focussed review we highlight hydrogels as biomaterial substrates which may replace and/or complement AM in the treatment of LSCD.
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Affiliation(s)
- Bernice Wright
- University of Reading, School of Pharmacy, Reading, Berkshire, RG6 6UB, UK
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41
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Pahuja P, Arora S, Pawar P. Ocular drug delivery system: a reference to natural polymers. Expert Opin Drug Deliv 2012; 9:837-61. [DOI: 10.1517/17425247.2012.690733] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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42
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Dürrigl M, Lusina Kregar M, Hafner A, Šegvić Klarić M, Filipović-Grčić J. Mupirocin calcium microencapsulation via spray drying: feed solvent influence on microparticle properties, stability and antimicrobial activity. Drug Dev Ind Pharm 2011; 37:1402-14. [DOI: 10.3109/03639045.2011.580350] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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