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El Sadda RR, Eissa MS, Elafndi RK, Moawed EA, El-Zahed MM, Saad HR. Synthesis and biological evaluation of titanium dioxide/thiopolyurethane composite: anticancer and antibacterial effects. BMC Chem 2024; 18:35. [PMID: 38368376 PMCID: PMC10874576 DOI: 10.1186/s13065-024-01138-x] [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: 09/26/2023] [Accepted: 02/06/2024] [Indexed: 02/19/2024] Open
Abstract
Nanocomposites incorporating titanium dioxide (TiO2) have a significant potential for various industrial and medical applications. These nanocomposites exhibit selectivity as antimicrobial and anticancer agents. Antimicrobial activity is crucial for medical uses, including applications in food processing, packaging, and surgical instruments. Additionally, these nanocomposites exhibit selectivity as anticancer agents. A stable nanocomposite as a new anticancer and antibacterial chemical was prepared by coupling titanium dioxide nanoparticles with a polyurethane foam matrix through the thiourea group. The titanium dioxide/thiopolyurethane nanocomposite (TPU/TiO2) was synthesized from low-cost Ilmenite ore and commercial polyurethane foam. EDX analysis was used to determine the elemental composition of the titanium dioxide (TiO2) matrix. TiO2NPs were synthesized and were characterized using TEM, XRD, IR, and UV-Vis spectra. TiO2NPs and TPU foam formed a novel composite. The MTT assay assessed Cisplatin and HepG-2 and MCF-7 cytotoxicity in vitro. Its IC50 values for HepG-2 and MCF-7 were 122.99 ± 4.07 and 201.86 ± 6.82 µg/mL, respectively. The TPU/TiO2 exhibits concentration-dependent cytotoxicity against MCF-7 and HepG-2 cells in vitro. The selective index was measured against both cell lines; it showed its safety against healthy cells. Agar well-diffusion exhibited good inhibition zones against Escherichia coli (12 mm), Bacillus cereus (10 mm), and Aspergillus niger (19 mm). TEM of TPU/TiO2-treated bacteria showed ultrastructure changes, including plasma membrane detachment from the cell wall, which caused lysis and bacterial death. TPU/TiO2 can treat cancer and inhibit microbes in dentures and other items. Also, TPU/TiO2 inhibits E. coli, B. cereus, and A. niger microbial strains.
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Affiliation(s)
- Rana R El Sadda
- Chemistry Department, Faculty of Science, Damietta University, P.O. Box 34517, New Damietta, Egypt.
| | - Mai S Eissa
- Chemistry Department, Faculty of Science, Damietta University, P.O. Box 34517, New Damietta, Egypt
| | - Rokaya K Elafndi
- Chemistry Department, Faculty of Science, Damietta University, P.O. Box 34517, New Damietta, Egypt
| | - Elhossein A Moawed
- Chemistry Department, Faculty of Science, Damietta University, P.O. Box 34517, New Damietta, Egypt
| | - Mohamed M El-Zahed
- Botany and Microbiology Department, Faculty of Science, Damietta University, New Damietta, Egypt
| | - Hoda R Saad
- Geology Department, Faulty of Science, Damietta University, New Damietta, Egypt
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Wang Q, Du J, Sun Q, Xiao S, Huang W. Evaluation of the osteoconductivity and the degradation of novel hydroxyapatite/polyurethane combined with mesoporous silica microspheres in a rabbit osteomyelitis model. J Orthop Surg (Hong Kong) 2023; 31:10225536231206921. [PMID: 37820377 DOI: 10.1177/10225536231206921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/13/2023] Open
Abstract
Bone defects caused by osteomyelitis can lead to severe disability. Surgeons still face significant challenges in treating bone defects. Nano-hydroxyapatite (n-HA) plays an important role in bone tissue engineering due to its excellent biocompatibility and osteoconductivity. Levofloxacin (Levo) was encapsulated in mesoporous silica nanoparticles (MSNs) via electrostatic attraction to serve as a drug delivery system. MSNs were incorporated with n-HA and polyurethane (PU). The degradation and osteoconductivity properties of these novel composite scaffolds and their effectiveness in treating chronic osteomyelitis in a rabbit model were assessed. Gross pathology, radiographic imaging, micro-computed tomography, Van Gieson staining, and hematoxylin and eosin staining were conducted at 6 and 12 weeks. The group of composite scaffolds combining n-HA/PU with MSNs containing 5 mg Levo (n-HA/PU + Nano +5 mg Levo) composite scaffolds showed superior antibacterial properties compared to the other groups. At 12 weeks, the n-HA/PU + Nano +5 mg Levo composite scaffolds group exhibited significantly greater volume of new trabecular bone formation compared to the other three groups. The surface of the novel composite scaffolds exhibited degradation after 6 weeks implantation. The internal structure of the scaffolds collapsed noticeably after 12 weeks of implantation. The rate of material degradation corresponded to the rate of new bone ingrowth. This novel composite scaffold, which is biodegradable and osteoconductive, has potential as a drug delivery system for treating chronic osteomyelitis accompanied by bone defects.
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Affiliation(s)
- Qi Wang
- Department of Orthopedics, Affiliated Hospital of Heze Medical College, Heze, China
| | - Jialei Du
- Department of Orthopedics, Affiliated Hospital of Heze Medical College, Heze, China
| | - Quanbo Sun
- Department of Orthopedics, Affiliated Hospital of Heze Medical College, Heze, China
| | - Shanwen Xiao
- Department of Orthopedics, Affiliated Hospital of Heze Medical College, Heze, China
| | - Wei Huang
- Department of Orthopaedic Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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3
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Poddar D, Jain P. Surface modification of three-dimensional porous polymeric scaffolds in tissue engineering applications: A focus review on physical modifications methods. POLYM-PLAST TECH MAT 2022. [DOI: 10.1080/25740881.2022.2061863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Deepak Poddar
- Department of Chemistry, Netaji Subhas University of Technology, New Delhi, India
| | - Purnima Jain
- Department of Chemistry, Netaji Subhas University of Technology, New Delhi, India
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Green Synthesis of Hydroxyapatite Nanoparticles from Wrightia tinctoria and Its Antibacterial Activity. BIONANOSCIENCE 2022. [DOI: 10.1007/s12668-022-01012-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Zhu L, Jiang G, Cen J, Li L. Preparation and performance of chlorfenapyr microcapsules with a degradable polylactide-based polyurethane wall material. RSC Adv 2022; 12:16918-16926. [PMID: 35754886 PMCID: PMC9172132 DOI: 10.1039/d2ra02787a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 05/29/2022] [Indexed: 12/16/2022] Open
Abstract
To improve the utilization rate of chlorfenapyr and make the wall material of chlorfenapyr microcapsules easily degradable, polylactide diol, toluene diisocyanate and 1,4-butanediol were used to prepare a chlorfenapyr microcapsule suspension by interfacial polymerization. The product was characterized by the methods of optical microscopy, scanning electron microscopy and Fourier-transform infrared spectroscopy. The results indicated that the microcapsule particles were spherical, with an encapsulation efficiency of 84.20%. The diluted product had good wetting and spreading abilities on cabbage leaves. Compared with other commercial formulations, the slow-release effect of the microcapsule suspension was more obvious and the release mechanisms conform to Fickian diffusion, with the release rate controllable by adjusting the external pH conditions. Furthermore, the wall material of the microcapsules showed good degradation performance in a phosphate-buffered solution. Microencapsulation by this method significantly increased the validity period of chlorfenapyr and the wall material was also degraded easily.
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Affiliation(s)
- Linfang Zhu
- College of Chemistry and Chemical Engineering, Guizhou University Guiyang China
| | - Guangqi Jiang
- College of Chemistry and Chemical Engineering, Guizhou University Guiyang China.,State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University Guiyang China
| | - Jun Cen
- College of Chemistry and Chemical Engineering, Guizhou University Guiyang China
| | - Linhuai Li
- College of Chemistry and Chemical Engineering, Guizhou University Guiyang China
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Gupta S, Majumdar S, Krishnamurthy S. Bioactive glass: A multifunctional delivery system. J Control Release 2021; 335:481-497. [PMID: 34087250 DOI: 10.1016/j.jconrel.2021.05.043] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 05/28/2021] [Accepted: 05/29/2021] [Indexed: 12/18/2022]
Abstract
Bioactive glasses (BAGs) were invented five decades ago and have been widely used clinically in orthopedic and stomatology. However, in the past two decades, BAGs have been explored immensely by several researchers worldwide as a multifunctional delivery system for a multitude of therapeutics ranging from metal ions to small molecules (e.g., drugs) and macromolecules (e.g., DNA). The impetus for devising a BAG-based delivery system in the 21st century is based upon the facilitative properties it offers for entrapment of a wide range of therapeutic molecules and the tailorable controlled release kinetics to the target tissue site along with the biological activity of the ionic dissolution products in several pathological conditions such as osteoporosis, cancer, infection, and inflammation. This review comprises two parts: the first part discusses the need for a new delivery system and how the journey from melt quench progressed towards template-based sol-gel mesoporous. In the second part, we have comprehended the scientific advancements made so far, emphasizing BAGs as a delivery system ranging from therapeutic ions to phytopharmaceuticals. We have also highlighted a few loopholes that have prevented bench-to-bedside clinical translation of a plethora of elucidative researches done so far.
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Affiliation(s)
- Smriti Gupta
- Neurotherapeutics Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
| | - Shreyasi Majumdar
- Neurotherapeutics Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
| | - Sairam Krishnamurthy
- Neurotherapeutics Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India.
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Colucci F, Mancini V, Mattu C, Boffito M. Designing Multifunctional Devices for Regenerative Pharmacology Based on 3D Scaffolds, Drug-Loaded Nanoparticles, and Thermosensitive Hydrogels: A Proof-of-Concept Study. Pharmaceutics 2021; 13:pharmaceutics13040464. [PMID: 33808138 PMCID: PMC8066789 DOI: 10.3390/pharmaceutics13040464] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/18/2021] [Accepted: 03/22/2021] [Indexed: 12/25/2022] Open
Abstract
Regenerative pharmacology combines tissue engineering/regenerative medicine (TERM) with drug delivery with the aim to improve the outcomes of traditional TERM approaches. In this work, we aimed to design a multicomponent TERM platform comprising a three-dimensional scaffold, a thermosensitive hydrogel, and drug-loaded nanoparticles. We used a thermally induced phase separation method to obtain scaffolds with anisotropic mechanical properties, suitable for soft tissue engineering. A thermosensitive hydrogel was developed using a Poloxamer® 407-based poly(urethane) to embed curcumin-loaded nanoparticles, obtained by the single emulsion nanoprecipitation method. We found that encapsulated curcumin could retain its antioxidant activity and that embedding nanoparticles within the hydrogel did not affect the hydrogel gelation kinetics nor the possibility to progressively release the drug. The porous scaffold was easily loaded with the hydrogel, resulting in significantly enhanced (4-fold higher) absorption of a model molecule of nutrients (fluorescein isothiocyanate dextran 4kDa) from the surrounding environment compared to pristine scaffold. The developed platform could thus represent a valuable alternative in the treatment of many pathologies affecting soft tissues, by concurrently exploiting the therapeutic effects of drugs, with the 3D framework acting as a physical support for tissue regeneration and the cell-friendly environment represented by the hydrogel.
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Affiliation(s)
- Francesco Colucci
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Turin, Italy; (F.C.); (V.M.)
| | - Vanessa Mancini
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Turin, Italy; (F.C.); (V.M.)
- Department of Anatomy & Embryology, Leiden University Medical Center, 2333 ZC Leiden, The Netherlands
| | - Clara Mattu
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Turin, Italy; (F.C.); (V.M.)
- PolitoBIOMed Laboratory, Politecnico di Torino, 10129 Turin, Italy
- Correspondence: (C.M.); (M.B.)
| | - Monica Boffito
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Turin, Italy; (F.C.); (V.M.)
- PolitoBIOMed Laboratory, Politecnico di Torino, 10129 Turin, Italy
- Institute for Chemical-Physical Processes, National Research Council (CNR-IPCF), 56124 Pisa, Italy
- Correspondence: (C.M.); (M.B.)
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An anti-inflammatory gelatin hemostatic agent with biodegradable polyurethane nanoparticles for vulnerable brain tissue. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 121:111799. [PMID: 33579446 DOI: 10.1016/j.msec.2020.111799] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 11/15/2020] [Accepted: 12/05/2020] [Indexed: 11/23/2022]
Abstract
Hemostasis plays a fundamental and critical role in all surgical procedures. However, the currently used topical hemostatic agents may at times undesirably induce inflammation, infection, and foreign body reaction and hamper the healing process. This may be serious in the central nervous system (CNS), especially for some neurosurgical diseases which have ongoing inflammation causing secondary brain injury. This study was aimed to develop a hemostatic agent with anti-inflammatory property by incorporating carboxyl-functionalized biodegradable polyurethane nanoparticles (PU NPs) and to evaluate its functionality using a rat neurosurgical model. PU NPs are specially-designed anti-inflammatory nanoparticles and absorbed by a commercially available hemostatic gelatin powder (Spongostan™). Then, the gelatin was implanted to the injured rat cortex and released anti-inflammatory PU NPs. The time to hemostasis, the cerebral edema formation, and the brain's immune responses were examined. The outcomes showed that PU NP-contained gelatin attenuated the brain edema, suppressed the gene expression levels of pro-inflammatory M1 biomarkers (e.g., IL-1β level to be about 25%), elevated the gene expression levels of anti-inflammatory M2 biomarkers (e.g., IL-10 level to be about 220%), and reduced the activation of inflammatory cells in the implanted site, compared with the conventional gelatin. Moreover, PU NP-contained gelatin increased the gene expression level of neurotrophic factor BDNF by nearly 3-folds. We concluded that the PU NP-contained hemostatic agents are anti-inflammatory with neuroprotective potential in vivo. This new hemostatic agent will be useful for surgery involving vulnerable tissue or organ (e.g., CNS) and also for diseases such as stroke, traumatic brain injury, and neurodegenerative diseases.
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9
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Novel polyurethane-based nanoparticles of infliximab to reduce inflammation in an in-vitro intestinal epithelial barrier model. Int J Pharm 2019; 565:533-542. [PMID: 31085256 DOI: 10.1016/j.ijpharm.2019.05.025] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 05/01/2019] [Accepted: 05/10/2019] [Indexed: 12/27/2022]
Abstract
In this study we examined the potential of novel biodegradable polymers of polyesterurethane (PU), and its PEGylated (PU-PEG) form as nanocarriers of Infliximab (INF), to treat inflammation in an in-vitro epithelial model. Nanoparticles (NPs) formulated were of average size of 200-287 nm. INF loading of NPs (INF-NPs) resulted in an increase in size and zeta potential. No cytotoxicity was observed for any of the NPs. Cellular interaction and uptake of PU NPs were similar compared with polycaprolactone (PCL) NPs and significantly higher to Poly(lactic-co-glycolic) acid (PLGA) NPs. Cellular interaction was higher for corresponding PEG-NPs. INF-PU and INF-PU-PEG NPs showed a rapid rate and extent of recovery of the epithelial barrier function in inflamed Caco-2 cell monolayers and decreased cytokine levels in inflamed monocytes. Results obtained in this study are promising and the potential of PU and PU-PEG NPs for drug delivery and targeting to treat gastrointestinal inflammation warrants further investigation.
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10
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Zheng T, Chen K, Chen W, Wu B, Sheng Y, Xiao Y. Preparation and characterisation of polylactic acid modified polyurethane microcapsules for controlled-release of chlorpyrifos. J Microencapsul 2019; 36:62-71. [DOI: 10.1080/02652048.2019.1599075] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Ting Zheng
- School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Kui Chen
- School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Wanyu Chen
- School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Bin Wu
- School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Yong Sheng
- School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Yao Xiao
- School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
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11
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Bone Regeneration by Novel Bioactive Glasses Containing Strontium and/or Magnesium: A Preliminary In-Vivo Study. MATERIALS 2018; 11:ma11112223. [PMID: 30413108 PMCID: PMC6266095 DOI: 10.3390/ma11112223] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 10/17/2018] [Accepted: 11/04/2018] [Indexed: 01/08/2023]
Abstract
In this work, a set of novel bioactive glasses have been tested in vivo in an animal model. The new compositions, characterized by an exceptional thermal stability and high in vitro bioactivity, contain strontium and/or magnesium, whose biological benefits are well documented in the literature. To simulate a long-term implant and to study the effect of the complete dissolution of glasses, samples were implanted in the mid-shaft of rabbits' femur and analyzed 60 days after the surgery; such samples were in undersized powder form. The statistical significance with respect to the type of bioactive glass was analyzed by Kruskal⁻Wallis test. The results show high levels of bone remodeling, several new bone formations containing granules of calcium phosphate (sometimes with amounts of strontium and/or magnesium), and the absence of adverse effects on bone processes due to the almost complete glass dissolution. In vivo results confirming the cell culture outcomes of a previous study highlighted that these novel bioglasses had osteostimulative effect without adverse skeletal reaction, thus indicating possible beneficial effects on bone formation processes. The presence of strontium in the glasses seems to be particularly interesting.
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12
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Mesoporous bioactive glass-polyurethane nanocomposites as reservoirs for sustained drug delivery. Colloids Surf B Biointerfaces 2018; 172:806-811. [PMID: 30352378 DOI: 10.1016/j.colsurfb.2018.10.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 09/08/2018] [Accepted: 10/10/2018] [Indexed: 12/14/2022]
Abstract
The materials capable of sustained drug release are highly desired in the biomedical field, and for this purpose, mesoporous bioactive glass (MBG) and polyurethanes (PUs) are being used along with various other materials. However, MBG is highly brittle and PUs suffer from the lower tensile strength value. Therefore, to overcome these shortcomings, bioactive nanocomposites were designed and fabricated by using MBG and biodegradable PUs. MBG with variable percentages was used as filler in arginine and starch-based PU matrices. The structural, mechanical and physicochemical properties were evaluated by fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), stress-strain curves and MTT assay. All the nanocomposites exhibited high cell viability (96-100%) and are therefore designated as biocompatible. The young's modulus is in the range of 0.5-0.8 MPa, which perfectly matches with that of cancellous bones. The nanocomposites were further studied for sustained drug delivery of an anti-cancer drug, imatinib. There was no burst effect and 52-84% of the drug was released over a period of three weeks. Consequently, these nanocomposites behaved as reservoirs for sustained drug release and can be applied for reducing the dose frequency where required.
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Shoaib M, Bahadur A, Saeed A, Rahman MSU, Naseer MM. Biocompatible, pH-responsive, and biodegradable polyurethanes as smart anti-cancer drug delivery carriers. REACT FUNCT POLYM 2018. [DOI: 10.1016/j.reactfunctpolym.2018.04.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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14
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Gentile P, Ghione C, Ferreira AM, Crawford A, Hatton PV. Alginate-based hydrogels functionalised at the nanoscale using layer-by-layer assembly for potential cartilage repair. Biomater Sci 2018; 5:1922-1931. [PMID: 28752866 DOI: 10.1039/c7bm00525c] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Injuries to articular cartilage are frequently difficult to repair, in part because of the poor regenerative capacity of this tissue. To date, no successful system for complete regeneration of the most challenging cartilage defects has been demonstrated. The aim of this work was to develop functionalised hydrogels at the nanoscale by Layer-by-Layer (LbL) assembly to promote cartilage healing. Hydrogels, based on sodium alginate (NaAlg) and gelatin (G), were prepared by an external gelation method consisting of CaCl2 diffusion and genipin addition for G crosslinking. Successively, hydrogels were coated with G to obtain a positive charge on the surface, then functionalised by LbL assembly to create 16 nanolayers, based on poly(styrene sulfonate)/poly(allyl amine) (PSS/PAH), including a specific peptide sequence (CTATVHL) and transforming growth factors β1 (TGF-β1). Physico-chemical properties were evaluated by XPS, ATR-FTIR and rheological analyses while in vitro cytocompatibility was studied using bovine articular chondrocytes (BAC). XPS spectra showed N1s and S2p peaks, indicating that PAH and PSS have been introduced with success. ATR-FTIR indicated the specific PAH and PSS absorption peaks. Finally, the biomolecule incorporation influenced positively the processes of BAC adhesion and proliferation, and glycosamynoglycan secretion. The functionalised alginate-based hydrogels described here are ideally suited to chondral regeneration in terms of their integrity, stability, and cytocompatibility.
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Affiliation(s)
- P Gentile
- School of Mechanical and Systems Engineering, Newcastle University, Stephenson Building, Claremont Road, Newcastle upon Tyne, NE1 7RU, UK.
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A comparative in vivo evaluation of bioactive glasses and bioactive glass-based composites for bone tissue repair. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017. [DOI: 10.1016/j.msec.2017.05.062] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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16
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Marzec M, Kucińska-Lipka J, Kalaszczyńska I, Janik H. Development of polyurethanes for bone repair. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 80:736-747. [PMID: 28866223 DOI: 10.1016/j.msec.2017.07.047] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 01/23/2017] [Accepted: 07/29/2017] [Indexed: 12/12/2022]
Abstract
The purpose of this paper is to review recent developments on polyurethanes aimed at the design, synthesis, modifications, and biological properties in the field of bone tissue engineering. Different polyurethane systems are presented and discussed in terms of biodegradation, biocompatibility and bioactivity. A comprehensive discussion is provided of the influence of hard to soft segments ratio, catalysts, stiffness and hydrophilicity of polyurethanes. Interaction with various cells, behavior in vivo and current strategies in enhancing bioactivity of polyurethanes are described. The discussion on the incorporation of biomolecules and growth factors, surface modifications, and obtaining polyurethane-ceramics composites strategies is held. The main emphasis is placed on the progress of polyurethane applications in bone regeneration, including bone void fillers, shape memory scaffolds, and drug carrier.
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Affiliation(s)
- M Marzec
- Department of Polymer Technology, Faculty of Chemistry, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland
| | - J Kucińska-Lipka
- Department of Polymer Technology, Faculty of Chemistry, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland.
| | - I Kalaszczyńska
- Department of Histology and Embryology, Center for Biostructure Research, Medical University of Warsaw, Chalubinskiego 5, 02-004 Warsaw, Poland; Centre for Preclinical Research and Technology, Banacha 1b, 02-097 Warsaw, Poland
| | - H Janik
- Department of Polymer Technology, Faculty of Chemistry, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland
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17
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Zhang YG, Zhu YJ, Chen F, Sun TW. A novel composite scaffold comprising ultralong hydroxyapatite microtubes and chitosan: preparation and application in drug delivery. J Mater Chem B 2017; 5:3898-3906. [DOI: 10.1039/c6tb02576e] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The composite scaffold comprising ultralong hydroxyapatite microtubes and chitosan with high drug loading capacity and sustained drug release properties has been successfully prepared.
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Affiliation(s)
- Yong-Gang Zhang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- P. R. China
| | - Ying-Jie Zhu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- P. R. China
| | - Feng Chen
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- P. R. China
| | - Tuan-Wei Sun
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- P. R. China
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18
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Bellucci D, Sola A, Salvatori R, Anesi A, Chiarini L, Cannillo V. Role of magnesium oxide and strontium oxide as modifiers in silicate-based bioactive glasses: Effects on thermal behaviour, mechanical properties and in-vitro bioactivity. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 72:566-575. [PMID: 28024623 DOI: 10.1016/j.msec.2016.11.110] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 11/16/2016] [Accepted: 11/23/2016] [Indexed: 11/30/2022]
Abstract
The composition of a CaO-rich silicate bioglass (BG_Ca-Mix, in mol%: 2.3 Na2O; 2.3 K2O; 45.6 CaO; 2.6 P2O5; 47.2 SiO2) was modified by replacing a fixed 10mol% of CaO with MgO or SrO or fifty-fifty MgO-SrO. The thermal behaviour of the modified glasses was accurately evaluated via differential thermal analysis (DTA), heating microscopy and direct sintering tests. The presence of MgO and/or SrO didn't interfere with the thermal stability of the parent glass, since all the new glasses remained completely amorphous after sintering (treatment performed at 753°C for the glass with MgO; at 750°C with SrO; at 759°C with MgO and SrO). The sintered samples achieved good mechanical properties, with a Young's modulus ranging between 57.9±6.7 for the MgO-SrO modified composition and 112.6±8.0GPa for the MgO-modified one. If immersed in a simulated body fluid (SBF), the modified glasses after sintering retained the strong apatite forming ability of the parent glass, in spite of the presence of MgO and/or SrO. Moreover, the sintered glasses, tested with MLO-Y4 osteocytes by means of a multi-parametrical approach, showed a good bioactivity in vitro, since neither the glasses nor their extracts caused any negative effect on cell viability or any inhibition on cell growth. The best results were achieved by the MgO-modified glasses, both BGMIX_Mg and BGMIX_MgSr, which were able to exert a strong stimulating effect on the cell growth, thus confirming the beneficial effect of MgO on the glass bioactivity.
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Affiliation(s)
- Devis Bellucci
- Department of Engineering "E. Ferrari", University of Modena and Reggio Emilia, Via P. Vivarelli 10, 41125 Modena, Italy.
| | - Antonella Sola
- Department of Engineering "E. Ferrari", University of Modena and Reggio Emilia, Via P. Vivarelli 10, 41125 Modena, Italy
| | - Roberta Salvatori
- Lab. Biomaterials, Department of Medical and Surgical Sciences of Children & Adults, University of Modena and Reggio Emilia, Via Campi 213/A, 41125 Modena, Italy
| | - Alexandre Anesi
- Lab. Biomaterials, Department of Medical and Surgical Sciences of Children & Adults, University of Modena and Reggio Emilia, Via Campi 213/A, 41125 Modena, Italy
| | - Luigi Chiarini
- Lab. Biomaterials, Department of Medical and Surgical Sciences of Children & Adults, University of Modena and Reggio Emilia, Via Campi 213/A, 41125 Modena, Italy
| | - Valeria Cannillo
- Department of Engineering "E. Ferrari", University of Modena and Reggio Emilia, Via P. Vivarelli 10, 41125 Modena, Italy
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Siafaka PI, Üstündağ Okur N, Karavas E, Bikiaris DN. Surface Modified Multifunctional and Stimuli Responsive Nanoparticles for Drug Targeting: Current Status and Uses. Int J Mol Sci 2016; 17:E1440. [PMID: 27589733 PMCID: PMC5037719 DOI: 10.3390/ijms17091440] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 08/09/2016] [Accepted: 08/19/2016] [Indexed: 02/07/2023] Open
Abstract
Nanocarriers, due to their unique features, are of increased interest among researchers working with pharmaceutical formulations. Polymeric nanoparticles and nanocapsules, involving non-toxic biodegradable polymers, liposomes, solid lipid nanoparticles, and inorganic-organic nanomaterials, are among the most used carriers for drugs for a broad spectrum of targeted diseases. In fact, oral, injectable, transdermal-dermal and ocular formulations mainly consist of the aforementioned nanomaterials demonstrating promising characteristics such as long circulation, specific targeting, high drug loading capacity, enhanced intracellular penetration, and so on. Over the last decade, huge advances in the development of novel, safer and less toxic nanocarriers with amended properties have been made. In addition, multifunctional nanocarriers combining chemical substances, vitamins and peptides via coupling chemistry, inorganic particles coated by biocompatible materials seem to play a key role considering that functionalization can enhance characteristics such as biocompatibility, targetability, environmental friendliness, and intracellular penetration while also have limited side effects. This review aims to summarize the "state of the art" of drug delivery carriers in nanosize, paying attention to their surface functionalization with ligands and other small or polymeric compounds so as to upgrade active and passive targeting, different release patterns as well as cell targeting and stimuli responsibility. Lastly, future aspects and potential uses of nanoparticulated drug systems are outlined.
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Affiliation(s)
- Panoraia I Siafaka
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki 54124, Macedonia, Greece.
| | - Neslihan Üstündağ Okur
- Department of Pharmaceutical Technology, School of Pharmacy, Istanbul Medipol University, Beykoz 34810, Istanbul, Turkey.
| | | | - Dimitrios N Bikiaris
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki 54124, Macedonia, Greece.
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Xu Y, Wang L, Tong Y, Xiang S, Guo X, Li J, Gao H, Wu X. Study on the preparation, characterization, and release behavior of carbosulfan/polyurethane microcapsules. J Appl Polym Sci 2016. [DOI: 10.1002/app.43844] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yong Xu
- College of Science; China Agricultural University; Beijing 100193 People's Republic of China
| | - Liying Wang
- College of Science; China Agricultural University; Beijing 100193 People's Republic of China
| | - Yujia Tong
- College of Science; China Agricultural University; Beijing 100193 People's Republic of China
| | - Sheng Xiang
- College of Science; China Agricultural University; Beijing 100193 People's Republic of China
| | - Xinyu Guo
- College of Science; China Agricultural University; Beijing 100193 People's Republic of China
| | - Jing Li
- College of Science; China Agricultural University; Beijing 100193 People's Republic of China
| | - Haixiang Gao
- College of Science; China Agricultural University; Beijing 100193 People's Republic of China
| | - Xuemin Wu
- College of Science; China Agricultural University; Beijing 100193 People's Republic of China
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Lu Z, Jiang X, Zuo X, Feng L. Improvement of cytocompatibility of 3D-printing resins for endothelial cell adhesion. RSC Adv 2016. [DOI: 10.1039/c6ra20700f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
We developed a new method for improving the biocompatibility of 3D-printing photosensitive resins using waterborne polyurethane (WPU) as the coating material.
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Affiliation(s)
- Zuyan Lu
- Regenerative Medicine Research Center
- West China Hospital
- Sichuan University
- Chengdu
- China
| | - Xia Jiang
- Regenerative Medicine Research Center
- West China Hospital
- Sichuan University
- Chengdu
- China
| | - Xiao Zuo
- Sichuan Languang 3D Bio-printing Institute
- Chengdu
- China
| | - Li Feng
- Regenerative Medicine Research Center
- West China Hospital
- Sichuan University
- Chengdu
- China
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Bellucci D, Sola A, Cannillo V. Hydroxyapatite and tricalcium phosphate composites with bioactive glass as second phase: State of the art and current applications. J Biomed Mater Res A 2015; 104:1030-56. [DOI: 10.1002/jbm.a.35619] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 12/01/2015] [Accepted: 12/01/2015] [Indexed: 12/23/2022]
Affiliation(s)
- Devis Bellucci
- Department of Engineering “E. Ferrari,”; University of Modena and Reggio Emilia; via P. Vivarelli 10 Modena 41125 Italy
| | - Antonella Sola
- Department of Engineering “E. Ferrari,”; University of Modena and Reggio Emilia; via P. Vivarelli 10 Modena 41125 Italy
| | - Valeria Cannillo
- Department of Engineering “E. Ferrari,”; University of Modena and Reggio Emilia; via P. Vivarelli 10 Modena 41125 Italy
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Chiaradia V, Valério A, Feuser PE, Oliveira DD, Araújo PH, Sayer C. Incorporation of superparamagnetic nanoparticles into poly(urea-urethane) nanoparticles by step growth interfacial polymerization in miniemulsion. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.06.035] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Hu T, Yang J, Cui K, Rao Q, Yin T, Tan L, Zhang Y, Li Z, Wang G. Controlled Slow-Release Drug-Eluting Stents for the Prevention of Coronary Restenosis: Recent Progress and Future Prospects. ACS APPLIED MATERIALS & INTERFACES 2015; 7:11695-11712. [PMID: 26011753 DOI: 10.1021/acsami.5b01993] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Drug-eluting stents (DES) have become more widely used by cardiologists than bare metal stents (BMS) because of their better ability to control restenosis. However, recognized negative events, particularly including delayed or incomplete endothelialization and late stent thrombosis, have caused concerns over the long-term safety of DES. Although stent-based drug delivery can facilitate a drug's release directly to the restenosis site, a burst of drug release can seriously affect the pharmacological action and is a major factor accounting for adverse effects. Therefore, the drug release rate has become an important criterion in evaluating DES. The factors affecting the drug release rate include the drug carrier, drug, coating methods, drug storage, elution direction, coating thickness, pore size in the coating, release conditions (release medium, pH value, temperature), and hemodynamics after the stent implantation. A better understanding of how these factors influence drug release is particularly important for the reasonable use of efficient control strategies for drug release. This review summarizes the factors influencing the drug release from DES and presents strategies for enhancing the control of the drug's release, including the stent design, the application of absorbable stents, the development of new polymers, and the application of nanocarriers and improvements in the coating technology. Therefore, this paper provides a reference for the preparation of novel controlled slow-release DES.
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Affiliation(s)
- Tingzhang Hu
- †Key Laboratory for Biorheological Science and Technology of Ministry of Education (Chongqing University), State and Local Joint Engineering Laboratory for Vascular Implants (Chongqing), Bioengineering College of Chongqing University, Chongqing 400030, China
| | - Jiali Yang
- †Key Laboratory for Biorheological Science and Technology of Ministry of Education (Chongqing University), State and Local Joint Engineering Laboratory for Vascular Implants (Chongqing), Bioengineering College of Chongqing University, Chongqing 400030, China
| | - Kun Cui
- ‡Center of Cardiology, Chongqing Zhongshan Hospital, Chongqing 400013, China
| | - Qiong Rao
- †Key Laboratory for Biorheological Science and Technology of Ministry of Education (Chongqing University), State and Local Joint Engineering Laboratory for Vascular Implants (Chongqing), Bioengineering College of Chongqing University, Chongqing 400030, China
| | - Tieying Yin
- †Key Laboratory for Biorheological Science and Technology of Ministry of Education (Chongqing University), State and Local Joint Engineering Laboratory for Vascular Implants (Chongqing), Bioengineering College of Chongqing University, Chongqing 400030, China
| | - Lili Tan
- †Key Laboratory for Biorheological Science and Technology of Ministry of Education (Chongqing University), State and Local Joint Engineering Laboratory for Vascular Implants (Chongqing), Bioengineering College of Chongqing University, Chongqing 400030, China
| | - Yuan Zhang
- ‡Center of Cardiology, Chongqing Zhongshan Hospital, Chongqing 400013, China
| | - Zhenggong Li
- ‡Center of Cardiology, Chongqing Zhongshan Hospital, Chongqing 400013, China
| | - Guixue Wang
- †Key Laboratory for Biorheological Science and Technology of Ministry of Education (Chongqing University), State and Local Joint Engineering Laboratory for Vascular Implants (Chongqing), Bioengineering College of Chongqing University, Chongqing 400030, China
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Bellucci D, Sola A, Anesi A, Salvatori R, Chiarini L, Cannillo V. Bioactive glass/hydroxyapatite composites: Mechanical properties and biological evaluation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 51:196-205. [DOI: 10.1016/j.msec.2015.02.041] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Revised: 01/21/2015] [Accepted: 02/24/2015] [Indexed: 12/14/2022]
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