1
|
Kastinen T, Batys P, Tolmachev D, Laasonen K, Sammalkorpi M. Ion-Specific Effects on Ion and Polyelectrolyte Solvation. Chemphyschem 2024; 25:e202400244. [PMID: 38712639 DOI: 10.1002/cphc.202400244] [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: 03/05/2024] [Revised: 05/02/2024] [Accepted: 05/02/2024] [Indexed: 05/08/2024]
Abstract
Ion-specific effects on aqueous solvation of monovalent counter ions, Na+ ${^+ }$ , K+ ${^+ }$ , Cl- ${^- }$ , and Br- ${^- }$ , and two model polyelectrolytes (PEs), poly(styrene sulfonate) (PSS) and poly(diallyldimethylammonium) (PDADMA) were here studied with ab initio molecular dynamics (AIMD) and classical molecular dynamics (MD) simulations based on the OPLS-aa force-field which is an empirical fixed point-charge force-field. Ion-specific binding to the PE charge groups was also characterized. Both computational methods predict similar response for the solvation of the PEs but differ notably in description of ion solvation. Notably, AIMD captures the experimentally observed differences in Cl- ${^- }$ and Br- ${^- }$ anion solvation and binding with the PEs, while the classical MD simulations fail to differentiate the ion species response. Furthermore, the findings show that combining AIMD with the computationally less costly classical MD simulations allows benefiting from both the increased accuracy and statistics reach.
Collapse
Affiliation(s)
- Tuuva Kastinen
- Department of Chemistry and Materials Science, Aalto University, P.O. Box 16100, 00076, Aalto, Finland
- Academy of Finland Center of Excellence in Life-Inspired Hybrid Materials (LIBER), Aalto University, P.O. Box 16100, 00076, Aalto, Finland
- Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, 33014, Tampere University, Finland
| | - Piotr Batys
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, PL-30239, Krakow, Poland
| | - Dmitry Tolmachev
- Department of Chemistry and Materials Science, Aalto University, P.O. Box 16100, 00076, Aalto, Finland
- Academy of Finland Center of Excellence in Life-Inspired Hybrid Materials (LIBER), Aalto University, P.O. Box 16100, 00076, Aalto, Finland
| | - Kari Laasonen
- Department of Chemistry and Materials Science, Aalto University, P.O. Box 16100, 00076, Aalto, Finland
| | - Maria Sammalkorpi
- Department of Chemistry and Materials Science, Aalto University, P.O. Box 16100, 00076, Aalto, Finland
- Academy of Finland Center of Excellence in Life-Inspired Hybrid Materials (LIBER), Aalto University, P.O. Box 16100, 00076, Aalto, Finland
- Department of Bioproducts and Biosystems, Aalto University, P.O. Box 16100, 00076, Aalto, Finland
| |
Collapse
|
2
|
Mamidi N, De Silva FF, Vacas AB, Gutiérrez Gómez JA, Montes Goo NY, Mendoza DR, Reis RL, Kundu SC. Multifaceted Hydrogel Scaffolds: Bridging the Gap between Biomedical Needs and Environmental Sustainability. Adv Healthc Mater 2024:e2401195. [PMID: 38824416 DOI: 10.1002/adhm.202401195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Revised: 05/29/2024] [Indexed: 06/03/2024]
Abstract
Hydrogels are dynamically evolving 3D networks composed of hydrophilic polymer scaffolds with significant applications in the healthcare and environmental sectors. Notably, protein-based hydrogels mimic the extracellular matrix, promoting cell adhesion. Further enhancing cell proliferation within these scaffolds are matrix-metalloproteinase-triggered amino acid motifs. Integration of cell-friendly modules like peptides and proteins expands hydrogel functionality. These exceptional properties position hydrogels for diverse applications, including biomedicine, biosensors, environmental remediation, and the food industry. Despite significant progress, there is ongoing research to optimize hydrogels for biomedical and environmental applications further. Engineering novel hydrogels with favorable characteristics is crucial for regulating tissue architecture and facilitating ecological remediation. This review explores the synthesis, physicochemical properties, and biological implications of various hydrogel types and their extensive applications in biomedicine and environmental sectors. It elaborates on their potential applications, bridging the gap between advancements in the healthcare sector and solutions for environmental issues.
Collapse
Affiliation(s)
- Narsimha Mamidi
- Wisconsin Center for NanoBioSystems, School of Pharmacy, University of Wisconsin-Madison, Madison, WI, 53705, USA
- Department of Chemistry and Nanotechnology, The School of Engineering and Science, Tecnologico de Monterrey, Nuevo Leon, Monterrey, 64849, Mexico
| | - Fátima Franco De Silva
- Department of Chemistry and Nanotechnology, The School of Engineering and Science, Tecnologico de Monterrey, Nuevo Leon, Monterrey, 64849, Mexico
| | - Alejandro Bedón Vacas
- Department of Chemistry and Nanotechnology, The School of Engineering and Science, Tecnologico de Monterrey, Nuevo Leon, Monterrey, 64849, Mexico
| | - Javier Adonay Gutiérrez Gómez
- Department of Chemistry and Nanotechnology, The School of Engineering and Science, Tecnologico de Monterrey, Nuevo Leon, Monterrey, 64849, Mexico
| | - Naomi Yael Montes Goo
- Department of Chemistry and Nanotechnology, The School of Engineering and Science, Tecnologico de Monterrey, Nuevo Leon, Monterrey, 64849, Mexico
| | - Daniela Ruiz Mendoza
- Department of Chemistry and Nanotechnology, The School of Engineering and Science, Tecnologico de Monterrey, Nuevo Leon, Monterrey, 64849, Mexico
| | - Rui L Reis
- 3Bs Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, Barco, Guimarães, 4805-017, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Braga, Guimarães, Portugal
| | - Subhas C Kundu
- 3Bs Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, Barco, Guimarães, 4805-017, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Braga, Guimarães, Portugal
| |
Collapse
|
3
|
Delgado MZ, Aranda FL, Hernandez-Tenorio F, Garrido-Miranda KA, Meléndrez MF, Palacio DA. Polyelectrolytes for Environmental, Agricultural, and Medical Applications. Polymers (Basel) 2024; 16:1434. [PMID: 38794627 PMCID: PMC11124962 DOI: 10.3390/polym16101434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 04/25/2024] [Accepted: 04/26/2024] [Indexed: 05/26/2024] Open
Abstract
In recent decades, polyelectrolytes (PELs) have attracted significant interest owing to a surge in research dedicated to the development of new technologies and applications at the biological level. Polyelectrolytes are macromolecules of which a substantial portion of the constituent units contains ionizable or ionic groups. These macromolecules demonstrate varied behaviors across different pH ranges, ionic strengths, and concentrations, making them fascinating subjects within the scientific community. The aim of this review is to present a comprehensive survey of the progress in the application studies of polyelectrolytes and their derivatives in various fields that are vital for the advancement, conservation, and technological progress of the planet, including agriculture, environmental science, and medicine. Through this bibliographic review, we seek to highlight the significance of these materials and their extensive range of applications in modern times.
Collapse
Affiliation(s)
- Martina Zuñiga Delgado
- Departamento de Polímeros, Facultad de Ciencias Químicas, Universidad de Concepción, Edmundo Larenas 129, Casilla 160-C, Concepción 4070409, Chile (F.L.A.)
| | - Francisca L. Aranda
- Departamento de Polímeros, Facultad de Ciencias Químicas, Universidad de Concepción, Edmundo Larenas 129, Casilla 160-C, Concepción 4070409, Chile (F.L.A.)
- Department of Materials Engineering (DIMAT), Faculty of Engineering, University of Concepcion, 270 Edmundo Larenas, Box 160-C, Concepcion 4070409, Chile
| | - Fabian Hernandez-Tenorio
- Environmental Processes Research Group, School of Applied Sciences and Engineering, Universidad EAFIT, Medellin 050022, Colombia;
| | - Karla A. Garrido-Miranda
- Scientific and Technological Bioresource Nucleus (BIOREN-UFRO), Universidad de La Frontera, Temuco 4780000, Chile;
| | - Manuel F. Meléndrez
- Facultad de Ciencias para el Cuidado de la Salud, Universidad San Sebastián, Campus Las Tres Pascuales, Lientur 1457, Concepción 4060000, Chile
| | - Daniel A. Palacio
- Departamento de Polímeros, Facultad de Ciencias Químicas, Universidad de Concepción, Edmundo Larenas 129, Casilla 160-C, Concepción 4070409, Chile (F.L.A.)
| |
Collapse
|
4
|
Mascarenhas R, Hegde S, Manaktala N. Chitosan nanoparticle applications in dentistry: a sustainable biopolymer. Front Chem 2024; 12:1362482. [PMID: 38660569 PMCID: PMC11039901 DOI: 10.3389/fchem.2024.1362482] [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: 12/28/2023] [Accepted: 03/26/2024] [Indexed: 04/26/2024] Open
Abstract
The epoch of Nano-biomaterials and their application in the field of medicine and dentistry has been long-lived. The application of nanotechnology is extensively used in diagnosis and treatment aspects of oral diseases. The nanomaterials and its structures are being widely involved in the production of medicines and drugs used for the treatment of oral diseases like periodontitis, oral carcinoma, etc. and helps in maintaining the longevity of oral health. Chitosan is a naturally occurring biopolymer derived from chitin which is seen commonly in arthropods. Chitosan nanoparticles are the latest in the trend of nanoparticles used in dentistry and are becoming the most wanted biopolymer for use toward therapeutic interventions. Literature search has also shown that chitosan nanoparticles have anti-tumor effects. This review highlights the various aspects of chitosan nanoparticles and their implications in dentistry.
Collapse
Affiliation(s)
- Roma Mascarenhas
- Department of Conservative Dentistry and Endodontics, Manipal College of Dental Sciences Mangalore, Manipal Academy of Higher Education, Manipal, India
| | - Shreya Hegde
- Department of Conservative Dentistry and Endodontics, Manipal College of Dental Sciences Mangalore, Manipal Academy of Higher Education, Manipal, India
| | - Nidhi Manaktala
- Department of Oral Pathology and Microbiology, Manipal College of Dental Sciences Mangalore, Manipal Academy of Higher Education, Manipal, India
| |
Collapse
|
5
|
Suneetha M, Kim H, Han SS. Bone-like apatite formation in biocompatible phosphate-crosslinked bacterial cellulose-based hydrogels for bone tissue engineering applications. Int J Biol Macromol 2024; 256:128364. [PMID: 38000603 DOI: 10.1016/j.ijbiomac.2023.128364] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 11/14/2023] [Accepted: 11/21/2023] [Indexed: 11/26/2023]
Abstract
Addressing major bone injuries is a challenge in bone regeneration, necessitating innovative 3D hydrogel-based therapeutic approaches to enhance scaffold properties for better bioactivity. Bacterial cellulose (BC) is an excellent scaffold for bone tissue engineering due to its biocompatibility, high porosity, substantial surface area, and remarkable mechanical strength. However, its practical application is limited due to a lack of inherent osteogenic activity and biomineralization ability. In this study, we synthesized bone-like apatite in biocompatible BC hydrogel by introducing phosphate groups. Hydrogels were prepared using fibrous BC, acrylamide (AM), and bis [2-methacryloyloxy] ethyl phosphate (BMEP) as a crosslinker through free radical polymerization (P-BC-PAM). P-BC-PAM hydrogels exhibited outstanding compressive mechanical properties, highly interconnected porous structures, good swelling, and biodegradable properties. BMEP content significantly influenced the physicochemical and biological properties of the hydrogels. Increasing BMEP content enhanced the fibrous structure, porosity from 85.1 % to 89.5 %, and compressive mechanical strength. The optimized hydrogel (2.0P-BC-PAM) displayed maximum compressive stress, toughness, and elastic modulus at 75 % strain: 221 ± 0.08 kPa, 24,674.2 ± 978 kPa, and 11 ± 0.47 kPa, respectively. P-BC-PAM hydrogels underwent biomineralization in simulated body fluid (SBF) for 14 days, forming bone-like apatite with a Ca/P ratio of 1.75, similar to hydroxyapatite. Confirmed by Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and field-emission scanning electron microscopy (FE-SEM), this suggests their potential as scaffolds for bone tissue engineering. MC3T3-E1 osteoblast cells effectively attached and proliferated on P-BC-PAM. In summary, this study contributes insights into developing phosphate-functionalized BC-based hydrogels with potential applications in bone tissue engineering.
Collapse
Affiliation(s)
- Maduru Suneetha
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea.
| | - Hyeonjin Kim
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea
| | - Sung Soo Han
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea; Research Institute of Cell Culture, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea.
| |
Collapse
|
6
|
Li W, Wu S, Li S, Zhong X, Zhang X, Qiao H, Kang M, Chen J, Wang P, Tao LQ. Gesture Recognition System Using Reduced Graphene Oxide-Enhanced Hydrogel Strain Sensors for Rehabilitation Training. ACS APPLIED MATERIALS & INTERFACES 2023; 15:45106-45115. [PMID: 37699573 DOI: 10.1021/acsami.3c08709] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
Gesture recognition systems epitomize a modern and intelligent approach to rehabilitative training, finding utility in assisted driving, sign language comprehension, and machine control. However, wearable devices that can monitor and motivate physically rehabilitated people in real time remain little studied. Here, we present an innovative gesture recognition system that integrates hydrogel strain sensors with machine learning to facilitate finger rehabilitation training. PSTG (PAM/SA/TG) hydrogels are constructed by thermal polymerization of acrylamide (AM), sodium alginate (SA), and tannic acid-reduced graphene oxide (TA-rGO, TG), with AM polymerizing into polyacrylamide (PAM). The surface of TG has abundant functional groups that can establish multiple hydrogen bonds with PAM and SA chains to endow the hydrogel with high stretchability and mechanical stability. Our strain sensor boasts impressive sensitivity (Gauge factor = 6.13), a fast response time (40.5 ms), and high linearity (R2 = 0.999), making it an effective tool for monitoring human joint movements and pronunciation. Leveraging machine learning techniques, our gesture recognition system accurately discerns nine distinct types of gestures with a recognition accuracy of 100%. Our research drives wearable advancements, elevating the landscape of patient rehabilitation and augmenting gesture recognition systems' healthcare applications.
Collapse
Affiliation(s)
- Wen Li
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China
| | - Shunxin Wu
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China
| | - Simou Li
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China
| | - Xiyang Zhong
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China
| | - Xiaobo Zhang
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China
| | - Hao Qiao
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China
| | - Meicun Kang
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China
| | - Jinghan Chen
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China
| | - Ping Wang
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China
| | - Lu-Qi Tao
- Beijing Engineering Research Center of Industrial Spectrum Imaging, School of Automation and Electrical Engineering, University of Science and Technology Beijing, Beijing 100083, China
| |
Collapse
|
7
|
Agnes CJ, Karoichan A, Tabrizian M. The Diamond Concept Enigma: Recent Trends of Its Implementation in Cross-linked Chitosan-Based Scaffolds for Bone Tissue Engineering. ACS APPLIED BIO MATERIALS 2023. [PMID: 37310896 PMCID: PMC10354806 DOI: 10.1021/acsabm.3c00108] [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: 06/15/2023]
Abstract
An increasing number of publications over the past ten years have focused on the development of chitosan-based cross-linked scaffolds to regenerate bone tissue. The design of biomaterials for bone tissue engineering applications relies heavily on the ideals set forth by a polytherapy approach called the "Diamond Concept". This methodology takes into consideration the mechanical environment, scaffold properties, osteogenic and angiogenic potential of cells, and benefits of osteoinductive mediator encapsulation. The following review presents a comprehensive summarization of recent trends in chitosan-based cross-linked scaffold development within the scope of the Diamond Concept, particularly for nonload-bearing bone repair. A standardized methodology for material characterization, along with assessment of in vitro and in vivo potential for bone regeneration, is presented based on approaches in the literature, and future directions of the field are discussed.
Collapse
Affiliation(s)
- Celine J Agnes
- Department of Biomedical Engineering, McGill University, Montreal, Quebec H3A 2B4, Canada
- Shriner's Hospital for Children, Montreal, Quebec H4A 0A9 Canada
| | - Antoine Karoichan
- Shriner's Hospital for Children, Montreal, Quebec H4A 0A9 Canada
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, Quebec H3A 1G1 Canada
| | - Maryam Tabrizian
- Department of Biomedical Engineering, McGill University, Montreal, Quebec H3A 2B4, Canada
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, Quebec H3A 1G1 Canada
| |
Collapse
|
8
|
Gupta R, Swarupa S, Mayya C, Bhatia D, Thareja P. Graphene Oxide-Carbamoylated Chitosan Hydrogels with Tunable Mechanical Properties for Biological Applications. ACS APPLIED BIO MATERIALS 2023; 6:578-590. [PMID: 36655342 DOI: 10.1021/acsabm.2c00885] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Chitosan (CH)-based hydrogels have been extensively researched in numerous biological applications, including drug delivery, biosensing, wound healing, and tissue engineering, to name a few. Previously, modified CH hydrogels by carbamoylation, using potassium cyanate (KCNO) as the cross-linker, have shown improvement in viscoelastic properties and biocompatibility. In this study, graphene oxide (GO) nanofillers are added to carbamoylated CH to form a nanocomposite hydrogel and study the influence of CH molecular weight (Mw) and GO loading concentrations on hydrogel properties. The physical properties (swelling, degradation, and porous structure) of the hydrogels can be tuned as required for cell attachment and spreading by varying both the GO concentration and the Mw of CH. Rheological characterization showed an improvement in the mechanical properties (storage modulus, yield stress, and viscosity) of the synthesized CH-GO hydrogels with an increase in the Mw of CH and the GO concentration. Human retinal pigmented epithelial-1 (RPE-1) cells seeded onto the prepared hydrogel scaffolds showed good cell viability, adhesion, and cell spreading, confirming their cytocompatibility, with dependence on both Mw of CH and GO loading.
Collapse
Affiliation(s)
- Ratnika Gupta
- Chemical Engineering, Indian Institute of Technology, Gandhinagar382355, India
| | - Sanchari Swarupa
- Biological Engineering, Indian Institute of Technology, Gandhinagar382355, India
| | - Chaithra Mayya
- Biological Engineering, Indian Institute of Technology, Gandhinagar382355, India
| | - Dhiraj Bhatia
- Biological Engineering, Indian Institute of Technology, Gandhinagar382355, India
| | - Prachi Thareja
- Chemical Engineering, Indian Institute of Technology, Gandhinagar382355, India
| |
Collapse
|
9
|
Fabrication of self-antibacterial chitosan/oxidized starch polyelectrolyte complex sponges for controlled delivery of curcumin. Food Hydrocoll 2023. [DOI: 10.1016/j.foodhyd.2022.108147] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
10
|
Sapuła P, Bialik-Wąs K, Malarz K. Are Natural Compounds a Promising Alternative to Synthetic Cross-Linking Agents in the Preparation of Hydrogels? Pharmaceutics 2023; 15:253. [PMID: 36678882 PMCID: PMC9866639 DOI: 10.3390/pharmaceutics15010253] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/03/2023] [Accepted: 01/06/2023] [Indexed: 01/13/2023] Open
Abstract
The main aim of this review is to assess the potential use of natural cross-linking agents, such as genipin, citric acid, tannic acid, epigallocatechin gallate, and vanillin in preparing chemically cross-linked hydrogels for the biomedical, pharmaceutical, and cosmetic industries. Chemical cross-linking is one of the most important methods that is commonly used to form mechanically strong hydrogels based on biopolymers, such as alginates, chitosan, hyaluronic acid, collagen, gelatin, and fibroin. Moreover, the properties of natural cross-linking agents and their advantages and disadvantages are compared relative to their commonly known synthetic cross-linking counterparts. Nowadays, advanced technologies can facilitate the acquisition of high-purity biomaterials from unreacted components with no additional purification steps. However, while planning and designing a chemical process, energy and water consumption should be limited in order to reduce the risks associated with global warming. However, many synthetic cross-linking agents, such as N,N'-methylenebisacrylamide, ethylene glycol dimethacrylate, poly (ethylene glycol) diacrylates, epichlorohydrin, and glutaraldehyde, are harmful to both humans and the environment. One solution to this problem could be the use of bio-cross-linking agents obtained from natural resources, which would eliminate their toxic effects and ensure the safety for humans and the environment.
Collapse
Affiliation(s)
- Paulina Sapuła
- Department of Organic Chemistry and Technology, Faculty of Chemical Engineering and Technology, Cracow University of Technology, 24 Warszawska St., 31-155 Cracow, Poland
| | - Katarzyna Bialik-Wąs
- Department of Organic Chemistry and Technology, Faculty of Chemical Engineering and Technology, Cracow University of Technology, 24 Warszawska St., 31-155 Cracow, Poland
| | - Katarzyna Malarz
- A. Chelkowski Institute of Physics, Faculty of Science and Technology, University of Silesia in Katowice, 75 Pułku Piechoty 1A, 41-500 Chorzow, Poland
| |
Collapse
|
11
|
Ghiorghita CA, Dinu MV, Lazar MM, Dragan ES. Polysaccharide-Based Composite Hydrogels as Sustainable Materials for Removal of Pollutants from Wastewater. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238574. [PMID: 36500664 PMCID: PMC9736407 DOI: 10.3390/molecules27238574] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 11/23/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022]
Abstract
Nowadays, pollution has become the main bottleneck towards sustainable technological development due to its detrimental implications in human and ecosystem health. Removal of pollutants from the surrounding environment is a hot research area worldwide; diverse technologies and materials are being continuously developed. To this end, bio-based composite hydrogels as sorbents have received extensive attention in recent years because of advantages such as high adsorptive capacity, controllable mechanical properties, cost effectiveness, and potential for upscaling in continuous flow installations. In this review, we aim to provide an up-to-date analysis of the literature on recent accomplishments in the design of polysaccharide-based composite hydrogels for removal of heavy metal ions, dyes, and oxyanions from wastewater. The correlation between the constituent polysaccharides (chitosan, cellulose, alginate, starch, pectin, pullulan, xanthan, salecan, etc.), engineered composition (presence of other organic and/or inorganic components), and sorption conditions on the removal performance of addressed pollutants will be carefully scrutinized. Particular attention will be paid to the sustainability aspects in the selected studies, particularly to composite selectivity and reusability, as well as to their use in fixed-bed columns and real wastewater applications.
Collapse
|
12
|
Ma Y, Wang X, Su T, Lu F, Chang Q, Gao J. Recent Advances in Macroporous Hydrogels for Cell Behavior and Tissue Engineering. Gels 2022; 8:606. [PMID: 36286107 PMCID: PMC9601978 DOI: 10.3390/gels8100606] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 09/07/2022] [Accepted: 09/14/2022] [Indexed: 11/23/2022] Open
Abstract
Hydrogels have been extensively used as scaffolds in tissue engineering for cell adhesion, proliferation, migration, and differentiation because of their high-water content and biocompatibility similarity to the extracellular matrix. However, submicron or nanosized pore networks within hydrogels severely limit cell survival and tissue regeneration. In recent years, the application of macroporous hydrogels in tissue engineering has received considerable attention. The macroporous structure not only facilitates nutrient transportation and metabolite discharge but also provides more space for cell behavior and tissue formation. Several strategies for creating and functionalizing macroporous hydrogels have been reported. This review began with an overview of the advantages and challenges of macroporous hydrogels in the regulation of cellular behavior. In addition, advanced methods for the preparation of macroporous hydrogels to modulate cellular behavior were discussed. Finally, future research in related fields was discussed.
Collapse
Affiliation(s)
| | | | | | | | - Qiang Chang
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou 510515, China
| | - Jianhua Gao
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou 510515, China
| |
Collapse
|
13
|
Baniasadi H, Kimiaei E, Polez RT, Ajdary R, Rojas OJ, Österberg M, Seppälä J. High-resolution 3D printing of xanthan gum/nanocellulose bio-inks. Int J Biol Macromol 2022; 209:2020-2031. [PMID: 35500781 DOI: 10.1016/j.ijbiomac.2022.04.183] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 04/05/2022] [Accepted: 04/25/2022] [Indexed: 01/19/2023]
Abstract
The current study provides a comprehensive rheology study and a survey on direct ink writing of xanthan gum/cellulose nanocrystal (XG/CNC) bio-inks for developing 3D geometries that mimic soft tissue engineering scaffolds' physical and mechanical properties. The presence of CNC was found to be a critical prerequisite for the printability of XG bio-inks; accordingly, the hybrid XG/CNC bio-inks revealed the excellent viscoelastic properties that enabled precise control of hydrogel shaping and printing of lattice structures composed of up to eleven layers with high fidelity and fair resolution without any deformation after printing. The lyophilized 3D scaffolds presented a porous structure with open and interconnected pores and a porosity higher than 70%, vital features for tissue engineering scaffolds. Moreover, they showed a relatively high swelling of approximately 11 g/g, facilitating oxygen and nutrient exchange. Furthermore, the elastic and compressive moduli of the scaffolds that enhanced significantly upon increasing CNC content were in the range of a few kPa, similar to soft tissues. Finally, no significant cell cytotoxicity was observed against human liver cancer cells (HepG2), highlighting the potential of these developed 3D printed scaffolds for soft tissue engineering applications.
Collapse
Affiliation(s)
- Hossein Baniasadi
- Polymer Technology, School of Chemical Engineering, Aalto University, Kemistintie 1, 02150 Espoo, Finland
| | - Erfan Kimiaei
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, FIN-00076 Aalto Espoo, Finland
| | - Roberta Teixeira Polez
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, FIN-00076 Aalto Espoo, Finland
| | - Rubina Ajdary
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, FIN-00076 Aalto Espoo, Finland
| | - Orlando J Rojas
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, FIN-00076 Aalto Espoo, Finland; Bioproducts Institute, Departments of Chemical and Biological Engineering, Department of Chemistry and Wood Science, The University of British Columbia, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada
| | - Monika Österberg
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, FIN-00076 Aalto Espoo, Finland
| | - Jukka Seppälä
- Polymer Technology, School of Chemical Engineering, Aalto University, Kemistintie 1, 02150 Espoo, Finland.
| |
Collapse
|
14
|
Cheng J, You L, Cai X, Yang J, Chen H, Shi X, Wu J, Wang J, Xiong C, Wang S. Fermentation-Inspired Gelatin Hydrogels with a Controllable Supermacroporous Structure and High Ductility for Wearable Flexible Sensors. ACS APPLIED MATERIALS & INTERFACES 2022; 14:26338-26349. [PMID: 35590475 DOI: 10.1021/acsami.2c02524] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Supermacroporous hydrogels have attracted wide concern due to their comfort and breathability in wearable health-monitoring applications. Size controllable supermacroporous structure and excellent mechanical properties are the most important for its application. However, they are normally fabricated by the cryogelation method, which is difficult to control pore size and maintain flexibility. Here, yeast fermentation-inspired gelatin hydrogels with a controllable supermacroporous structure and excellent mechanical properties were fabricated for the first time. The pore size can be controlled by adjusting the content of glucose and yeast, the ratio of glucose to yeast, fermentation time, and gelatin content during fermentation. The hydrogels demonstrated a controllable pore size range from 100 to 400 μm and rapid swelling characteristics. The mechanical properties were maintained by soaking ammonium sulfate solution for 12 h, showing maximum tensile and compressive strains over 300 and 99%, respectively. This novel approach can be easily applied to the preparation of supermacroporous and high ductility hydrogels under mild conditions. Furthermore, conductive hydrogels combined supermacroporous structures with conductive polyaniline and reduced oxidized graphene, and silver nanowires were prepared as wearable flexible sensors. The obtained sensors maintain well-distributed porosity, breathability, and mechanical flexibility, also showing excellent conductivity of 2.4 S m-1. Finally, the sensors were successfully applied to detect physiological signals and human-computer interaction.
Collapse
Affiliation(s)
- Jing Cheng
- College of Chemical Engineering, Fuzhou University, Fuzhou 350108, China
| | - Lijun You
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China
| | - Xixi Cai
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China
| | - Jinhao Yang
- School of Mechanical Science & Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Huimin Chen
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China
| | - Xinming Shi
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China
| | - Jiajie Wu
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China
| | - Jianhua Wang
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China
| | - Caihua Xiong
- School of Mechanical Science & Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Shaoyun Wang
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China
| |
Collapse
|
15
|
Sivakumar PM, Yetisgin AA, Sahin SB, Demir E, Cetinel S. Bone tissue engineering: Anionic polysaccharides as promising scaffolds. Carbohydr Polym 2022; 283:119142. [DOI: 10.1016/j.carbpol.2022.119142] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 12/22/2021] [Accepted: 01/10/2022] [Indexed: 12/21/2022]
|
16
|
Dragan ES, Dinu MV, Ghiorghita CA. Chitosan-Based Polyelectrolyte Complex Cryogels with Elasticity, Toughness and Delivery of Curcumin Engineered by Polyions Pair and Cryostructuration Steps. Gels 2022; 8:gels8040240. [PMID: 35448141 PMCID: PMC9024878 DOI: 10.3390/gels8040240] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 04/11/2022] [Accepted: 04/12/2022] [Indexed: 12/17/2022] Open
Abstract
Chitosan (CS)-based drug delivery systems (DDSs) are often stabilized by chemical cross-linking. A much more friendly approach to deliver drugs in a controlled manner is represented by polyelectrolyte complexes (PECs) physically stabilized by spontaneous interactions between CS and natural or synthetic biocompatible polyanions. PECs with tunable structures, morphologies, and mechanical properties were fabricated in this paper by an innovative and sustainable strategy. Carboxymethyl cellulose (CMC) or poly(2-acrylamido-2-methylpropanesulfonate sodium salt) were used as aqueous solutions, while CS microparticles were evenly dispersed in the polyanion solution, at pH 6.5, where CS was not soluble. Cryostructuration of the dispersion in two steps (5 min at −196 °C, and 24 h at −18 °C), and freeze-drying at −55 °C, 48 h, conducted to pre-PEC cryogels. Next step was rearrangement of complementary polyions and the complex formation inside the pore walls of cryogels by exposure of the pre-PECs at a source of H+. PEC cryogels with impressive elasticity and toughness were engineered in this study by multiple-cryostructuration steps using CMC as polyanion with a molar mass of 250 kDa and an optimum concentration of polyanion and polycation. The performances of PEC cryogels in sustained delivery of anti-inflammatory drugs such as curcumin were demonstrated.
Collapse
|
17
|
Deng J, Pan J, Yu L, Wang Y, Zhang W, Huang W, Fan Y, Liu Y. The Effects of Irradiation Time on Gelatin Methacrylate Hydrogels Used for Bone Tissue Engineering. J BIOMATER TISS ENG 2022. [DOI: 10.1166/jbt.2022.2887] [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]
Abstract
Gelatin methacrylate (GelMA) hydrogels are a promising material for use in a variety of tissue engineering applications. Herein, we focused on identifying the optimal irradiation time necessary to photopolymerize GelMA hydrogels with visible blue light in a manner that did not adversely
impact the biophysical properties of these cell-containing gels. We assessed the toxic effects of different irradiation times (3, 5, 10, 20 and 40 seconds) on BMMSCs encapsulated in a GelMA hydrogel using lithium phenyl-2,4,6 trimethylbenzoylphosphinate (LAP) as a photoinitiator. Both CCK-8
assays and Live-Dead staining were used to measure BMMSCs viability. We observed increasing compression strength as a function of increased irradiation time, although this corresponded to a reduction in swelling ratio and pore sizes. We ultimately found that when using LAP as a photoinitiator,
the optimal irradiation time was 5–10 seconds, which was suitable for bone tissue engineering application. Ultimately we determined that a 5 second irradiation time was optimal for studies of encapsulated stem cells.
Collapse
Affiliation(s)
- Jiajia Deng
- Department of Orthodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200001, P. R. China
| | - Jie Pan
- Department of Orthodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200001, P. R. China
| | - Liming Yu
- Department of Orthodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200001, P. R. China
| | - Yuhui Wang
- Department of Orthodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200001, P. R. China
| | - Weihua Zhang
- Department of Orthodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200001, P. R. China
| | - Wei Huang
- Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200001, P. R. China
| | - Yichao Fan
- Department of Ophthalmology, Zhongshan Hospital, Fudan University, Shanghai, 200032, P. R. China
| | - Yuehua Liu
- Department of Orthodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200001, P. R. China
| |
Collapse
|
18
|
Development and characterization of azadirachta indica gum-poly(2-hydroxyethyl methacrylate) crosslinked co-polymeric hydrogels for drug delivery applications. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
19
|
Sudhakar K, Suneetha M, Rao KM, Han SS. Antibacterial reduced graphene oxide reinforces polyelectrolyte hydrogels with polysaccharides via a green method. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127340] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
20
|
Aljohani M, Alkabli J, Abualnaja MM, Alrefaei AF, Almehmadi SJ, Mahmoud MH, El-Metwaly NM. Electrospun AgNPs-polylactate nanofibers and their antimicrobial applications. REACT FUNCT POLYM 2021. [DOI: 10.1016/j.reactfunctpolym.2021.104999] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
|
21
|
Wang S, Guo X, Guo P, Guan S, Fu H, Cui W, Ao Y. Tunable mechanical and self-healing poly (acrylic acid-co-stearyl methacrylate) hydrogels induced by soaking methods. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126755] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
22
|
Jin M, Shi J, Zhu W, Yao H, Wang DA. Polysaccharide-Based Biomaterials in Tissue Engineering: A Review. TISSUE ENGINEERING PART B-REVIEWS 2021; 27:604-626. [PMID: 33267648 DOI: 10.1089/ten.teb.2020.0208] [Citation(s) in RCA: 73] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
In addition to proteins and nucleic acids, polysaccharides are an important type of biomacromolecule widely distributed in plants, animals, and microorganisms. Polysaccharides are considered as promising biomaterials due to their significant bioactivities, natural abundance, immunoactivity, and chemical modifiability for tissue engineering (TE) applications. Due to the similarities of the biochemical properties of polysaccharides and the extracellular matrix of human bodies, polysaccharides are increasingly recognized and accepted. Furthermore, the degradation behavior of these macromolecules is generally nontoxic. Certain delicate properties, such as remarkable mechanical properties and tunable tissue response, can be obtained by modifying the functional groups on the surface of polysaccharide molecules. The applications of polysaccharide-based biomaterials in the TE field have been growing intensively in recent decades, for example, bone/cartilage regeneration, cardiac regeneration, neural regeneration, and skin regeneration. This review summarizes the main essential properties of polysaccharides, including their chemical properties, crosslinking mechanisms, and biological properties, and focuses on the association between their structures and properties. The recent progress in polysaccharide-based biomaterials in various TE applications is reviewed, and the prospects for future studies are addressed as well. We intend this review to offer a comprehensive understanding of and inspiration for the research and development of polysaccharide-based materials in TE.
Collapse
Affiliation(s)
- Min Jin
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR
| | - Junli Shi
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, P.R. China
| | - Wenzhen Zhu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, Singapore
| | - Hang Yao
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, P.R. China
| | - Dong-An Wang
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR.,Shenzhen Research Institute, City University of Hong Kong, Shenzhen, P.R. China.,Karolinska Institute Ming Wai Lau Centre for Reparative Medicine, HKSTP, Sha Tin, Hong Kong SAR
| |
Collapse
|
23
|
A novel magnesium ion-incorporating dual-crosslinked hydrogel to improve bone scaffold-mediated osteogenesis and angiogenesis. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 121:111868. [PMID: 33579495 DOI: 10.1016/j.msec.2021.111868] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 12/14/2020] [Accepted: 01/03/2021] [Indexed: 02/07/2023]
Abstract
Osteogenesis is closely complemented by angiogenesis during the bone regeneration process. The development of functional hydrogel bone substitutes that mimic the extracellular matrix is a promising strategy for bone tissue engineering. However, the development of scaffold materials tailored to exhibit sufficient biomechanics, biodegradability, and favorable osteogenic and angiogenic activity continue to present a great challenge. Herein, we prepared a novel magnesium ion-incorporating dual-crosslinked hydrogel through the photocrosslinking of gelatin methacryloyl (GelMA), thiolated chitosan (TCS) and modified polyhedral oligomeric silsesquioxane (POSS) nanoparticles, and active Mg2+ ions were then introduced into system via coordination bonds of MgS, which can be tailored to possess superior mechanical strength, a stable network structure and more suitable pore size and degradation properties. The fabricated GelMA/TCS/POSS-Mg hydrogels effectively promoted cell adhesion, spreading, and proliferation, demonstrating that the introduction of POSS and Mg2+ not only stimulates the osteogenic differentiation of BMSCs but also promotes angiogenesis both in vitro and in vivo, thereby facilitating subsequent bone regeneration in calvarial defects of rats. Taken together, the results of this study indicate that the GelMA/TCS/POSS-Mg hydrogel has promising potential for repairing bone defects by promoting cell adhesion, osteogenesis and vascularization.
Collapse
|
24
|
Wu Y, Zhang X, Zhao Q, Tan B, Chen X, Liao J. Role of Hydrogels in Bone Tissue Engineering: How Properties Shape Regeneration. J Biomed Nanotechnol 2020; 16:1667-1686. [PMID: 33485397 DOI: 10.1166/jbn.2020.2997] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Bone defect that resulted from trauma, tumors, and other reasons is believed as a common clinical problem, which exists mainly in post-traumatic healing. Additionally, autologous/allogeneic transplantation, bone tissue engineering attracts increasing attention due to the existing problem of the limited donor. The applications of biomaterials can be considered as a rising and promising strategy for bone regeneration. Especially, hydrogel is featured with hydrophilic characteristic, good biocompatibility, and porous structure, which shows unique properties for bone regeneration. The main properties of hydrogel such as surface property, adhesive property, mechanical property, porosity, and degradation property, generally present influences on the migration, proliferation, and differentiation of mesenchymal stem cells exclusively or in combination, which consequently affect the regeneration of bones. This review mainly focuses on the theme: "how properties of hydrogel shape bone regeneration." Moreover, the latest progress achieved in the above mentioned direction is further discussed. Despite the fascinating advances researchers have made, certain potential challenges continue to exist in the research field, which need to be addressed for accelerating the clinical translation of hydrogel in bone regeneration.
Collapse
|
25
|
Fakhri E, Eslami H, Maroufi P, Pakdel F, Taghizadeh S, Ganbarov K, Yousefi M, Tanomand A, Yousefi B, Mahmoudi S, Kafil HS. Chitosan biomaterials application in dentistry. Int J Biol Macromol 2020; 162:956-974. [DOI: 10.1016/j.ijbiomac.2020.06.211] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 06/16/2020] [Accepted: 06/22/2020] [Indexed: 12/23/2022]
|
26
|
Flake-like glass nanoparticles reinforced natural polymeric scaffold as a promising substrate for bone regeneration. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-020-02230-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
27
|
Singh B, Singh B. Graft copolymerization of polyvinylpyrollidone onto Azadirachta indica gum polysaccharide in the presence of crosslinker to develop hydrogels for drug delivery applications. Int J Biol Macromol 2020; 159:264-275. [PMID: 32422260 DOI: 10.1016/j.ijbiomac.2020.05.091] [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] [Received: 03/29/2020] [Revised: 05/03/2020] [Accepted: 05/13/2020] [Indexed: 12/20/2022]
Abstract
In this work, graft-copolymerization of poly vinylpyrollidone onto Azadirachta indica gum polysaccharide in the presence of crosslinker has been carried out to prepare the hydrogel for use in drug delivery. The polymers were characterized by cryo-SEM, AFM, FTIR, and 13C NMR. The gel strength, cross-link density, mesh size, thrombogenicity, antioxidant and mucoadhesion properties of the gum-PVP hydrogels were determined along with the evaluation of drug release profile of methyl prednisolone, a colonic anti-inflammatory agent, from the drug loaded hydrogels. Cryo SEM images showed the porous crosslinked structure of the polymer network. The drug release from the polymer followed non-Fickian diffusion mechanism. The polymers showed 71.47 ± 4.63% haemo-compatibility and 05.52 ± 0.59 Nmm gel strength. The value of DPPH radical scavenging assay (73.16 ± 04.85%) indicated that the gum-PVP polymers are antioxidant. The results of biocompatibility, antioxidant activity, mucoadhesion and drug release properties of the polymers inferred the use of this drug carrier for colonic drug delivery.
Collapse
Affiliation(s)
- Baljit Singh
- Department of Chemistry, Himachal Pradesh University, Shimla 171005, India.
| | - Baldev Singh
- Department of Chemistry, Himachal Pradesh University, Shimla 171005, India
| |
Collapse
|