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Forogh MR, Emadi R, Ahmadian M, Saboori A. Fabrication and Characterization of Polycaprolactone-Baghdadite Nanofibers by Electrospinning Method for Tissue Engineering Applications. MATERIALS (BASEL, SWITZERLAND) 2024; 17:4187. [PMID: 39274577 DOI: 10.3390/ma17174187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2024] [Revised: 08/07/2024] [Accepted: 08/21/2024] [Indexed: 09/16/2024]
Abstract
This work investigates the essential constituents, production methods, and properties of polycaprolactone (PCL) and Baghdadite fibrous scaffolds. In this research, electrospinning was used to produce fiber ropes. In this study, the Baghdadite powder was synthesized using the sol-gel method and incorporated into PCL's polymeric matrix in formic acid and acetic acid solvents. The present work examined PCL-Baghdadite fibrous scaffolds at 1%, 3%, and 5 wt% for morphology, fiber diameter size, hydrophilicity, porosity, mechanical properties, degradability, and bioactivity. The introduction of Baghdadite nanopowder into pure PCL scaffolds reduced fiber diameter. The wetting angle decreased when Baghdadite nanopowder was added to fibrous scaffolds. Pure PCL reduced the wetting angle from 93.20° to 70.53°. Fibrous PCL scaffolds with Baghdadite nanopowder have better mechanical characteristics. The tensile strength of pure PCL fibers was determined at 2.08 ± 0.2 MPa, which was enhanced by up to 3 wt% by adding Baghdadite nanopowder. Fiber elasticity increased with tensile strength. Baghdadite at a 5% weight percentage reduced failure strain percentage. Fibers with more Baghdadite nanopowder biodegrade faster. Adding Baghdadite ceramic nanoparticles resulted in increased bioactivity and caused scaffolds to generate hydroxyapatite. The results show that Baghdadite PCL-3 wt% fibers have promising shape, diameter, and mechanical qualities. After 24 h, L-929 fibroblast cell viability was greater in the scaffold with 3% Baghdadite weight compared to the pure PCL. PCL-3 wt% Baghdadite fibers generated hydroxyapatite on the surface and degraded well. Based on the above findings, PCL fibers having 3 wt% of Baghdadite are the best sample for tissue engineering applications that heal flaws.
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Affiliation(s)
- Mir Reza Forogh
- Department of Materials Engineering, Isfahan University of Technology, Isfahan 8415683111, Iran
| | - Rahmatollah Emadi
- Department of Materials Engineering, Isfahan University of Technology, Isfahan 8415683111, Iran
| | - Mehdi Ahmadian
- Department of Materials Engineering, Isfahan University of Technology, Isfahan 8415683111, Iran
| | - Abdollah Saboori
- Integrated Additive Manufacturing Center, Department of Management and Production Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Tornio, Italy
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2
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Zhang Z, Zhang Y, Guo Y, Qian C, Chen K, Fang S, Qiu A, Zhong L, Zhang J, He R. Preparing gelatin-containing polycaprolactone / polylactic acid nanofibrous membranes for periodontal tissue regeneration using side-by-side electrospinning technology. J Biomater Appl 2024; 39:48-57. [PMID: 38659361 DOI: 10.1177/08853282241248778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Electrospinning technology has recently attracted increased attention in the biomedical field, and preparing various cellulose nanofibril membranes for periodontal tissue regeneration has unique advantages. However, the characteristics of using a single material tend to make it challenging to satisfy the requirements for a periodontal barrier film, and the production of composite fibrous membranes frequently impacts the quality of the final fiber membrane due to the influence of miscibility between different materials. In this study, nanofibrous membranes composed of polylactic acid (PLA) and polycaprolactone (PCL) fibers were fabricated using side-by-side electrospinning. Different concentrations of gelatin were added to the fiber membranes to improve their hydrophilic properties. The morphological structure of the different films as well as their composition, wettability and mechanical characteristics were examined. The results show that PCL/PLA dual-fibrous composite membranes with an appropriate amount of gelatin ensures sufficient mechanical strength while obtaining improved hydrophilic properties. The viability of L929 fibroblasts was evaluated using CCK-8 assays, and cell adhesion on the scaffolds was confirmed by scanning electron microscopy and by immunofluorescence assays. The results demonstrated that none of the fibrous membranes were toxic to cells and the addition of gelatin improved cell adhesion to those membranes. Based on our findings, adding 30% gelatin to the membrane may be the most appropriate content for periodontal tissue regeneration, considering the scaffold's mechanical qualities, hydrophilic properties and biocompatibility. In addition, the PCL-gelatin/PLA-gelatin dual-fibrous membranes prepared using side-by-side electrospinning technology have potential applications for tissue engineering.
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Affiliation(s)
- Zhuochen Zhang
- Department of Stomatology, Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
- School of Stomatology, Hangzhou Normal University, Hangzhou, China
| | - Ying Zhang
- Department of Stomatology, Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
- School of Stomatology, Hangzhou Normal University, Hangzhou, China
| | - Yabin Guo
- School of Stomatology, Hangzhou Normal University, Hangzhou, China
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, China
| | - Cheng Qian
- Department of Stomatology, Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
- School of Stomatology, Hangzhou Normal University, Hangzhou, China
| | - Kailun Chen
- Department of Stomatology, Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
- School of Stomatology, Hangzhou Normal University, Hangzhou, China
| | - Sheng Fang
- Department of Stomatology, Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
- School of Stomatology, Hangzhou Normal University, Hangzhou, China
| | - Anna Qiu
- Department of Stomatology, Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
- School of Stomatology, Hangzhou Normal University, Hangzhou, China
| | - Liangjun Zhong
- Department of Stomatology, Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
- School of Stomatology, Hangzhou Normal University, Hangzhou, China
| | - Jian Zhang
- Department of Stomatology, Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, China
| | - Rui He
- Department of Stomatology, Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
- School of Stomatology, Hangzhou Normal University, Hangzhou, China
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Dong J, Ding H, Wang Q, Wang L. A 3D-Printed Scaffold for Repairing Bone Defects. Polymers (Basel) 2024; 16:706. [PMID: 38475389 DOI: 10.3390/polym16050706] [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: 03/09/2023] [Revised: 11/04/2023] [Accepted: 01/30/2024] [Indexed: 03/14/2024] Open
Abstract
The treatment of bone defects has always posed challenges in the field of orthopedics. Scaffolds, as a vital component of bone tissue engineering, offer significant advantages in the research and treatment of clinical bone defects. This study aims to provide an overview of how 3D printing technology is applied in the production of bone repair scaffolds. Depending on the materials used, the 3D-printed scaffolds can be classified into two types: single-component scaffolds and composite scaffolds. We have conducted a comprehensive analysis of material composition, the characteristics of 3D printing, performance, advantages, disadvantages, and applications for each scaffold type. Furthermore, based on the current research status and progress, we offer suggestions for future research in this area. In conclusion, this review acts as a valuable reference for advancing the research in the field of bone repair scaffolds.
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Affiliation(s)
- Jianghui Dong
- Guangxi Engineering Research Center of Digital Medicine and Clinical Translation, School of Intelligent Medicine and Biotechnology, Guilin Medical University, Guilin 541199, China
| | - Hangxing Ding
- Guangxi Engineering Research Center of Digital Medicine and Clinical Translation, School of Intelligent Medicine and Biotechnology, Guilin Medical University, Guilin 541199, China
| | - Qin Wang
- Guangxi Engineering Research Center of Digital Medicine and Clinical Translation, School of Intelligent Medicine and Biotechnology, Guilin Medical University, Guilin 541199, China
| | - Liping Wang
- Guangxi Engineering Research Center of Digital Medicine and Clinical Translation, School of Intelligent Medicine and Biotechnology, Guilin Medical University, Guilin 541199, China
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Rahimkhoei V, Padervand M, Hedayat M, Seidi F, Dawi EA, Akbari A. Biomedical applications of electrospun polycaprolactone-based carbohydrate polymers: A review. Int J Biol Macromol 2023; 253:126642. [PMID: 37657575 DOI: 10.1016/j.ijbiomac.2023.126642] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 08/26/2023] [Accepted: 08/29/2023] [Indexed: 09/03/2023]
Abstract
Carbohydrate used in biomedical applications is influenced by numerous factors. One of the most appealing characteristic of carbohydrates is their ability to reproduce from natural resources which makes them ecologically friendly. Due to their abundance, biocompatibility, and no contamination by residual initiators, the desire for polysaccharides in medical uses is growing. Research on fiber-based materials, with a variety of medical applications including bio-functional scaffolds, continues to yield novel and intriguing findings. Almost all biopolymers of diverse structural compositions are electrospun to fulfill biomedical usage criteria, and the electrospinning technique is widely employed in biomedical technologies for both in-vivo and in-vitro therapies. Due to its biocompatibility and biodegradability, polycaprolactone (PCL) is employed in medical applications like tissue engineering and drug delivery. Although PCL nanofibers have established effects in vitro, more research is needed before their potential therapeutic application in the clinic. Here we tried to focus mainly on the carbohydrate incorporated PCL-based nanofibers production techniques, structures, morphology, and physicochemical properties along with their usage in biomedicine.
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Affiliation(s)
- Vahid Rahimkhoei
- Solid Tumor Research Center, Cellular and Molecular Research Medicine Institute, Urmia University of Medical Sciences, Urmia, Iran
| | - Mohsen Padervand
- Department of Chemistry, Faculty of Science, University of Maragheh, P.O Box 55181-83111, Maragheh, Iran
| | - Mohaddeseh Hedayat
- Department of Phramacology and Toxicology, School of Pharmacy, Urmia University of Medical Sciences, Urmia, Iran
| | - Farzad Seidi
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources and Joint International Research Lab of Lignocellulosic Functional Materials, Nanjing Forestry University, Nanjing 210037, China
| | - E A Dawi
- Nonlinear Dynamics Research Center (NDRC), Ajman University, Ajman, P.O. Box 346, United Arab Emirates
| | - Ali Akbari
- Solid Tumor Research Center, Cellular and Molecular Research Medicine Institute, Urmia University of Medical Sciences, Urmia, Iran.
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Pisani S, Mauri V, Negrello E, Friuli V, Genta I, Dorati R, Bruni G, Marconi S, Auricchio F, Pietrabissa A, Benazzo M, Conti B. Hybrid 3D-Printed and Electrospun Scaffolds Loaded with Dexamethasone for Soft Tissue Applications. Pharmaceutics 2023; 15:2478. [PMID: 37896239 PMCID: PMC10609822 DOI: 10.3390/pharmaceutics15102478] [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: 08/07/2023] [Revised: 09/01/2023] [Accepted: 09/28/2023] [Indexed: 10/29/2023] Open
Abstract
BACKGROUND To make the regenerative process more effective and efficient, tissue engineering (TE) strategies have been implemented. Three-dimensional scaffolds (electrospun or 3D-printed), due to their suitable designed architecture, offer the proper location of the position of cells, as well as cell adhesion and the deposition of the extracellular matrix. Moreover, the possibility to guarantee a concomitant release of drugs can promote tissue regeneration. METHODS A PLA/PCL copolymer was used for the manufacturing of electrospun and hybrid scaffolds (composed of a 3D-printed support coated with electrospun fibers). Dexamethasone was loaded as an anti-inflammatory drug into the electrospun fibers, and the drug release kinetics and scaffold biological behavior were evaluated. RESULTS The encapsulation efficiency (EE%) was higher than 80%. DXM embedding into the electrospun fibers resulted in a slowed drug release rate, and a slower release was seen in the hybrid scaffolds. The fibers maintained their nanometric dimensions (less than 800 nm) even after deposition on the 3D-printed supports. Cell adhesion and proliferation was favored in the DXM-loading hybrid scaffolds. CONCLUSIONS The hybrid scaffolds that were developed in this study can be optimized as a versatile platform for soft tissue regeneration.
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Affiliation(s)
- Silvia Pisani
- Department of Drug Sciences, University of Pavia, Viale Taramelli, 12, 27100 Pavia, Italy; (V.F.); (I.G.); (R.D.); (B.C.)
| | - Valeria Mauri
- SC General Surgery 2, Fondazione IRCCS Policlinico San Matteo, Viale Camillo Golgi, 19, 27100 Pavia, Italy; (V.M.); (E.N.); (A.P.)
| | - Erika Negrello
- SC General Surgery 2, Fondazione IRCCS Policlinico San Matteo, Viale Camillo Golgi, 19, 27100 Pavia, Italy; (V.M.); (E.N.); (A.P.)
| | - Valeria Friuli
- Department of Drug Sciences, University of Pavia, Viale Taramelli, 12, 27100 Pavia, Italy; (V.F.); (I.G.); (R.D.); (B.C.)
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Viale Taramelli, 12, 27100 Pavia, Italy; (V.F.); (I.G.); (R.D.); (B.C.)
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, Viale Taramelli, 12, 27100 Pavia, Italy; (V.F.); (I.G.); (R.D.); (B.C.)
| | - Giovanna Bruni
- Consorzio per lo Sviluppo dei Sistemi a Grande Interfase (C.S.G.I.), Department of Chemistry, Physical Chemistry Section, University of Pavia, 27100 Pavia, Italy;
| | - Stefania Marconi
- Department of Civil Engineering and Architecture, University of Pavia, 27100 Pavia, Italy;
- Fondazione IRCCS Policlinico San Matteo, Viale Camillo Golgi, 19, 27100 Pavia, Italy;
| | - Ferdinando Auricchio
- Fondazione IRCCS Policlinico San Matteo, Viale Camillo Golgi, 19, 27100 Pavia, Italy;
| | - Andrea Pietrabissa
- SC General Surgery 2, Fondazione IRCCS Policlinico San Matteo, Viale Camillo Golgi, 19, 27100 Pavia, Italy; (V.M.); (E.N.); (A.P.)
- Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy;
| | - Marco Benazzo
- Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy;
- Department of Otorhinolaryngology, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
- Integrated Unit of Experimental Surgery, Advanced Microsurgery and Regenerative Medicine, Università degli Studi di Pavia, 27100 Pavia, Italy
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Viale Taramelli, 12, 27100 Pavia, Italy; (V.F.); (I.G.); (R.D.); (B.C.)
- Fondazione IRCCS Policlinico San Matteo, Viale Camillo Golgi, 19, 27100 Pavia, Italy;
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6
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Junyaprasert VB, Thummarati P. Innovative Design of Targeted Nanoparticles: Polymer-Drug Conjugates for Enhanced Cancer Therapy. Pharmaceutics 2023; 15:2216. [PMID: 37765185 PMCID: PMC10537251 DOI: 10.3390/pharmaceutics15092216] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 08/10/2023] [Accepted: 08/18/2023] [Indexed: 09/29/2023] Open
Abstract
Polymer-drug conjugates (PDCs) have shown great promise in enhancing the efficacy and safety of cancer therapy. These conjugates combine the advantageous properties of both polymers and drugs, leading to improved pharmacokinetics, controlled drug release, and targeted delivery to tumor tissues. This review provides a comprehensive overview of recent developments in PDCs for cancer therapy. First, various types of polymers used in these conjugates are discussed, including synthetic polymers, such as poly(↋-caprolactone) (PCL), D-α-tocopheryl polyethylene glycol (TPGS), and polyethylene glycol (PEG), as well as natural polymers such as hyaluronic acid (HA). The choice of polymer is crucial to achieving desired properties, such as stability, biocompatibility, and controlled drug release. Subsequently, the strategies for conjugating drugs to polymers are explored, including covalent bonding, which enables a stable linkage between the polymer and the drug, ensuring controlled release and minimizing premature drug release. The use of polymers can extend the circulation time of the drug, facilitating enhanced accumulation within tumor tissues through the enhanced permeability and retention (EPR) effect. This, in turn, results in improved drug efficacy and reduced systemic toxicity. Moreover, the importance of tumor-targeting ligands in PDCs is highlighted. Various ligands, such as antibodies, peptides, aptamers, folic acid, herceptin, and HA, can be incorporated into conjugates to selectively deliver the drug to tumor cells, reducing off-target effects and improving therapeutic outcomes. In conclusion, PDCs have emerged as a versatile and effective approach to cancer therapy. Their ability to combine the advantages of polymers and drugs offers enhanced drug delivery, controlled release, and targeted treatment, thereby improving the overall efficacy and safety of cancer therapies. Further research and development in this field has great potential to advance personalized cancer treatment options.
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Pisani S, Mauri V, Negrello E, Mauramati S, Alaimo G, Auricchio F, Benazzo M, Dorati R, Genta I, Conti B, Ferretti VV, De Silvestri A, Pietrabissa A, Marconi S. Assessment of different manufacturing techniques for the production of bioartificial scaffolds as soft organ transplant substitutes. Front Bioeng Biotechnol 2023; 11:1186351. [PMID: 37441194 PMCID: PMC10333585 DOI: 10.3389/fbioe.2023.1186351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 06/13/2023] [Indexed: 07/15/2023] Open
Abstract
Introduction: The problem of organs' shortage for transplantation is widely known: different manufacturing techniques such as Solvent casting, Electrospinning and 3D Printing were considered to produce bioartificial scaffolds for tissue engineering purposes and possible transplantation substitutes. The advantages of manufacturing techniques' combination to develop hybrid scaffolds with increased performing properties was also evaluated. Methods: Scaffolds were produced using poly-L-lactide-co-caprolactone (PLA-PCL) copolymer and characterized for their morphological, biological, and mechanical features. Results: Hybrid scaffolds showed the best properties in terms of viability (>100%) and cell adhesion. Furthermore, their mechanical properties were found to be comparable with the reference values for soft tissues (range 1-10 MPa). Discussion: The created hybrid scaffolds pave the way for the future development of more complex systems capable of supporting, from a morphological, mechanical, and biological standpoint, the physiological needs of the tissues/organs to be transplanted.
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Affiliation(s)
- Silvia Pisani
- Department of Otorhinolaryngology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Valeria Mauri
- SC General Surgery 2, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Erika Negrello
- SC General Surgery 2, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Simone Mauramati
- Department of Otorhinolaryngology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Gianluca Alaimo
- Department of Civil Engineering and Architecture, University of Pavia, Pavia, Italy
| | - Ferdinando Auricchio
- Department of Civil Engineering and Architecture, University of Pavia, Pavia, Italy
| | - Marco Benazzo
- Department of Otorhinolaryngology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, Pavia, Italy
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Pavia, Italy
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Pavia, Italy
| | | | - Annalisa De Silvestri
- SSD Biostatistica e Clinical Trial Center, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Andrea Pietrabissa
- SC General Surgery 2, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Department of Surgery, University of Pavia, Pavia, Italy
| | - Stefania Marconi
- Department of Civil Engineering and Architecture, University of Pavia, Pavia, Italy
- Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
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Nirwan VP, Lasak M, Ciepluch K, Fahmi A. Hybrid Nanomat: Copolymer Template CdSe Quantum Dots In Situ Stabilized and Immobilized within Nanofiber Matrix. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13040630. [PMID: 36838998 PMCID: PMC9959613 DOI: 10.3390/nano13040630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/26/2023] [Accepted: 01/31/2023] [Indexed: 05/12/2023]
Abstract
Fabrication and characterization of hybrid nanomats containing quantum dots can play a prominent role in the development of advanced biosensors and bio-based semiconductors. Owing to their size-dependent properties and controlled nanostructures, quantum dots (QDs) exhibit distinct optical and electronic characteristics. However, QDs include heavy metals and often require stabilizing agents which are toxic for biological applications. Here, to mitigate the use of toxic ligands, cadmium selenide quantum dots (CdSe QDs) were synthesized in situ with polyvinylpyrrolidone (PVP) at room temperature. The addition of PVP polymer provided size regulation, stability, and control over size distribution of CdSe QDs. The characterization of the optical properties of the CdSe QDs was performed using fluorescence and ultraviolet-visible (UV-Vis) spectroscopy. CdSe QDs exhibited a typical absorbance peak at 280 nm and a photoluminescence emission peak at 580 nm. Transmission electron microscopy (TEM) micrographs demonstrated that CdSe QDs having an average size of 6 ± 4 nm were obtained via wet chemistry method. CdSe QDs were immobilized in a blend of PVP and poly(L-lactide-co-ε-caprolactone) (PL-b-CL) copolymer that was electrospun to produce nanofibers. Scanning electron microscopy (SEM), thermal analyses and attenuated total reflectance Fourier-transform infrared spectroscopy (ATR-FTIR) were used to characterize properties of fabricated nanofibers. Both pristine and hybrid nanofibers possessed cylindrical geometry and rough surface features, facilitating increased surface area. Infrared absorption spectra showed a slight shift in absorbance peaks due to interaction of PVP-coated CdSe QDs and nanofiber matrix. The presence of CdSe QDs influenced the fiber diameter and their thermal stability. Further, in vitro biological analyses of hybrid nanofibers showed promising antibacterial effect and decline in cancer cell viability. This study offers a simple approach to obtain hybrid nanomats immobilized with size-controlled PVP-coated CdSe QDs, which have potential applications as biosensors and antibacterial and anticancer cell agents.
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Affiliation(s)
- Viraj P. Nirwan
- Faculty of Technology and Bionics, Rhine-Waal University of Applied Science, Marie-Curie-Straβe 1, 47533 Kleve, Germany
| | - Magdalena Lasak
- Division of Medical Biology, Jan Kochanowski University in Kielce, Uniwersytecka Street 7, 25-406 Kielce, Poland
| | - Karol Ciepluch
- Division of Medical Biology, Jan Kochanowski University in Kielce, Uniwersytecka Street 7, 25-406 Kielce, Poland
| | - Amir Fahmi
- Faculty of Technology and Bionics, Rhine-Waal University of Applied Science, Marie-Curie-Straβe 1, 47533 Kleve, Germany
- Correspondence: ; Tel.: +49-0282-1806-73634
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Fan Y, Miao X, Hou C, Wang J, Lin J, Bian F. High tensile performance of PLA fiber-reinforced PCL composite via a synergistic process of strain and crystallization. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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10
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Fabrication of Phytic Acid/Urea Co-Modified Bamboo Biochar and Its Application as Green Flame Retardant for Polylactic Acid Resins. Polymers (Basel) 2023; 15:polym15020360. [PMID: 36679241 PMCID: PMC9861367 DOI: 10.3390/polym15020360] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/03/2023] [Accepted: 01/04/2023] [Indexed: 01/12/2023] Open
Abstract
It is of great significance to develop green, sustainable additives to improve the thermal stability and flame retardancy of biopolymers. In this work, a synergistic modification of P/N elements to bamboo biochar (mBC) was successfully achieved by grafting a reaction of phytic acid and urea with preoxidized bamboo biochar. Fourier transform infrared spectroscopy, X-ray diffraction, nuclear magnetic resonance and scanning electron microscope determinations of the mBC demonstrated a successive grafting of phytic acid and urea to the originally porous surface. The ground mBC was blended with polylactic acid (PLA) to prepare mBC/PLA composites by extrusion and hot pressing. Mechanical strength studies showed a compromise in rigidity, which might originate from the mBC overdose and its limited miscibility with the resin. The thermogravimetric results supported the fact that the enhancement of thermal stability and flame retardancy of the composites with the mBC dosage, which showed that the mBC dosage in the PLA composites was not only lower than that of the conventional flame retardants, but also outperformed the counterparts using BC modified by inorganic phosphoric acid and urea. The mBC was prone to accelerate the earlier decomposition of the composites (30 °C lower in decomposition) and generate a continuous, dense residual carbon layer, which provides an effective shield resisting the mass and heat transfer between the combustion area and the underlying composite matrix. Only 10 wt% of mBC dosage could achieve a V-0 rating (UL94) for the composite, with a higher limiting oxygen index up to 28.3% compared to 20.7% for that of the virgin PLA; the cone colorimetric results also suggested that the flame retardancy had been greatly improved for all composites. In this work, biobased P-/N-containing bamboo biochar would be expected as a nontoxic biochar-based flame retardant that serves as green filler in polymer composites.
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11
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Pisani S, Genta I, Modena T, Dorati R, Bruni G, Benazzo M, Conti B. A proof of concept to define the parameters affecting poly-L-lactide-co-poly-ε-caprolactone shape memory electrospun nanofibers for biomedical applications. Drug Deliv Transl Res 2023; 13:593-607. [PMID: 35978259 PMCID: PMC9794533 DOI: 10.1007/s13346-022-01218-2] [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] [Accepted: 07/30/2022] [Indexed: 12/31/2022]
Abstract
This study is a proof of concept performed to evaluate process parameters affecting shape memory effect of copolymer poly-L-lactide-co-poly-ε-caprolactone (PLA:PCL) 70:30 ratio based nanofibrous scaffolds. A design of experiment (DOE) statistical approach was used to define the interaction between independent material and process variables related to electrospun scaffold manufacturing, such as polymer solution concentration (w/v%), spinning time (min), and needle size (Gauge), and their influence on Rf% (ability of the scaffold to maintain the induced temporary shape) and Rr% (ability of the scaffold to recover its original shape) outputs. A mathematical model was obtained from DOE useful to predict scaffold Rf% and Rr% values. PLA-PCL 15% w/v, 22G needle, and 20-min spinning time were selected to confirm the data obtained from theoretical model. Subsequent morphological (SEM), chemical-physical (GPC and DSC), mechanical (uniaxial tensile tests), and biological (cell viability and adhesion) characterizations were performed.
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Affiliation(s)
- Silvia Pisani
- grid.419425.f0000 0004 1760 3027Department of Surgical Sciences, Otorhinolaryngology Unit, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Ida Genta
- grid.8982.b0000 0004 1762 5736Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy
| | - Tiziana Modena
- grid.8982.b0000 0004 1762 5736Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy
| | - Rossella Dorati
- grid.8982.b0000 0004 1762 5736Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy
| | - Giovanna Bruni
- grid.8982.b0000 0004 1762 5736Department of Chemistry, Physico-Chemical Section, University of Pavia, Via Taramelli 14, 27100 Pavia, Italy
| | - Marco Benazzo
- grid.419425.f0000 0004 1760 3027Department of Surgical Sciences, Otorhinolaryngology Unit, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, 27100, Pavia, Italy.
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12
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Pekdemir ME, Kök M, Kanca MS, Özen Öner E, Pekdemir S, Inci Ş, Kirbağ S, Tatar B.
B
2
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reinforced polylactic acid/thermoplastic polyethylene glycol shape memory composites. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Mediha Kök
- Department of Physics, Faculty of Science Firat University Elazig Turkey
| | - Muhammed Sait Kanca
- Rare Earth Elements Application and Research Center Munzur University Tunceli Turkey
| | - Ecem Özen Öner
- Department of Physics, Faculty of Science Firat University Elazig Turkey
| | - Sibel Pekdemir
- Department of Chemistry, Faculty of Science Bingöl University Bingöl Turkey
| | - Şule Inci
- Department of Biology, Faculty of Science Firat University Elazig Turkey
| | - Sevda Kirbağ
- Department of Biology, Faculty of Science Firat University Elazig Turkey
| | - Beyhan Tatar
- Department of Physics, Faculty of Science Istanbul University Istanbul Turkey
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13
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Synergistic anticancer effects of metformin and Achillea vermicularis Trin-loaded nanofibers on human pancreatic cancer cell line: An in vitro study. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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14
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Haghdel M, Imanieh MH, Hosseinpour H, Ghasemi Y, Alizadeh AA. Development of Bio-artificial Esophageal Tissue Engineering Utilization for Circumferential Lesion Transplantation: A Narrative Review. IRANIAN JOURNAL OF MEDICAL SCIENCES 2022; 47:406-421. [PMID: 36117582 PMCID: PMC9445863 DOI: 10.30476/ijms.2021.89194.1991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 02/12/2021] [Accepted: 04/06/2021] [Indexed: 11/19/2022]
Abstract
The esophagus is the gastrointestinal tract's primary organ that transfers bolus into the stomach with peristaltic motion. Therefore, its lesions cause a significant disturbance in the nutrition and digestive system. Esophageal disease treatment sometimes requires surgical procedures that involve removal and circumferential full-thickness replacement. Unlike other organs, the esophagus has a limited regeneration ability and cannot be transplanted from donors. There are various methods of restoring the esophageal continuity; however, they are associated with certain flaws that lead to a non-functional recovery. As an exponentially growing science, tissue engineering has become a leading technique for the development of tissue replacement to repair damaged esophageal segments. Scaffold plays a significant role in the process of tissue engineering, as it acts as a template for the regeneration of growing tissue. A variety of scaffolds have been studied to replace the esophagus. Due to the many tissue quality challenges, the results are still inadequate and need to be improved. The success of esophageal tissue regeneration will finally depend on the scaffold's capability to mimic natural tissue properties and provide a qualified environment for regeneration. Thereby, scaffold fabrication techniques are fundamental. This article reviews the recent developments in esophageal tissue engineering for the treatment of circumferential lesions based on scaffold biomaterial engineering approaches.
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Affiliation(s)
- Mobin Haghdel
- Department of Tissue Engineering, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Hadi Imanieh
- Department of Pediatrics Gastroenterology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hamidreza Hosseinpour
- Department of Surgery, Shiraz Laparoscopic Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Younes Ghasemi
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ali Akbar Alizadeh
- Department of Tissue Engineering, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
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15
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El-Taweel SH, Fathy R. Synergistic Effects of Multi-Wall Carbon Nanotubes and Polycaprolactone on the Thermal and Mechanical Properties of Polylactic Acid. J MACROMOL SCI B 2022. [DOI: 10.1080/00222348.2022.2098656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- S. H. El-Taweel
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | - R. Fathy
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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16
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Biocompatible PLA/PCL blends nanocomposites doped with nanographite: Physico-chemical, and thermal behaviour. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03117-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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18
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Pisani S, Genta I, Dorati R, Modena T, Chiesa E, Bruni G, Benazzo M, Conti B. A Design of Experiment (DOE) approach to correlate PLA-PCL electrospun fibers diameter and mechanical properties for soft tissue regeneration purposes. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2021.103060] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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19
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Design and manufacturing a tubular structures based on poly(ɛ-caprolactone) / poly(glycerol-sebacic acid) biodegradable nanocomposite blends: suggested for applications in the nervous, vascular and renal tissue engineering. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-021-02881-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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20
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Pisani S, Genta I, Modena T, Dorati R, Benazzo M, Conti B. Shape-Memory Polymers Hallmarks and Their Biomedical Applications in the Form of Nanofibers. Int J Mol Sci 2022; 23:1290. [PMID: 35163218 PMCID: PMC8835830 DOI: 10.3390/ijms23031290] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 01/20/2022] [Accepted: 01/20/2022] [Indexed: 12/28/2022] Open
Abstract
Shape-Memory Polymers (SMPs) are considered a kind of smart material able to modify size, shape, stiffness and strain in response to different external (heat, electric and magnetic field, water or light) stimuli including the physiologic ones such as pH, body temperature and ions concentration. The ability of SMPs is to memorize their original shape before triggered exposure and after deformation, in the absence of the stimulus, and to recover their original shape without any help. SMPs nanofibers (SMPNs) have been increasingly investigated for biomedical applications due to nanofiber's favorable properties such as high surface area per volume unit, high porosity, small diameter, low density, desirable fiber orientation and nanoarchitecture mimicking native Extra Cellular Matrix (ECM). This review focuses on the main properties of SMPs, their classification and shape-memory effects. Moreover, advantages in the use of SMPNs and different biomedical application fields are reported and discussed.
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Affiliation(s)
- Silvia Pisani
- Otorhinolaryngology Unit, Department of Surgical Sciences, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy or (S.P.); (M.B.)
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (I.G.); (T.M.); (R.D.)
| | - Tiziana Modena
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (I.G.); (T.M.); (R.D.)
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (I.G.); (T.M.); (R.D.)
| | - Marco Benazzo
- Otorhinolaryngology Unit, Department of Surgical Sciences, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy or (S.P.); (M.B.)
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (I.G.); (T.M.); (R.D.)
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21
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Pisani S, Croce S, Mauramati S, Marmonti M, Cobianchi L, Herman I, Dorati R, Avanzini MA, Genta I, Benazzo M, Conti B. Engineered Full Thickness Electrospun Scaffold for Esophageal Tissue Regeneration: From In Vitro to In Vivo Approach. Pharmaceutics 2022; 14:pharmaceutics14020252. [PMID: 35213985 PMCID: PMC8876746 DOI: 10.3390/pharmaceutics14020252] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 01/14/2022] [Accepted: 01/17/2022] [Indexed: 02/01/2023] Open
Abstract
Acquired congenital esophageal malformations, such as malignant esophageal cancer, require esophagectomy resulting in full thickness resection, which cannot be left untreated. The proposed approach is a polymeric full-thickness scaffold engineered with mesenchymal stem cells (MSCs) to promote and speed up the regeneration process, ensuring adequate support and esophageal tissue reconstruction and avoiding the use of autologous conduits. Copolymers poly-L-lactide-co-poly-ε-caprolactone (PLA-PCL) 70:30 and 85:15 ratio were chosen to prepare electrospun tubular scaffolds. Electrospinning apparatus equipped with two different types of tubular mandrels: cylindrical (∅ 10 mm) and asymmetrical (∅ 10 mm and ∅ 8 mm) were used. Tubular scaffolds underwent morphological, mechanical (uniaxial tensile stress) and biological (MTT and Dapi staining) characterization. Asymmetric tubular geometry resulted in the best properties and was selected for in vivo surgical implantation. Anesthetized pigs underwent full thickness circumferential resection of the mid-lower thoracic esophagus, followed by implantation of the asymmetric scaffold. Preliminary in vivo results demonstrated that detached stitch suture achieved better results in terms of animal welfare and scaffold integration; thus, it is to be preferred to continuous suture.
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Affiliation(s)
- Silvia Pisani
- Otorhinolaryngology Unit, Department of Surgical Sciences, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy; (S.M.); (I.H.); (M.B.)
- Correspondence:
| | - Stefania Croce
- Department of Clinical, Surgical, Diagnostic & Pediatric Sciences, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy; (S.C.); (L.C.)
| | - Simone Mauramati
- Otorhinolaryngology Unit, Department of Surgical Sciences, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy; (S.M.); (I.H.); (M.B.)
| | - Marta Marmonti
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (M.M.); (R.D.); (I.G.); (B.C.)
| | - Lorenzo Cobianchi
- Department of Clinical, Surgical, Diagnostic & Pediatric Sciences, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy; (S.C.); (L.C.)
| | - Irene Herman
- Otorhinolaryngology Unit, Department of Surgical Sciences, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy; (S.M.); (I.H.); (M.B.)
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (M.M.); (R.D.); (I.G.); (B.C.)
| | | | - Ida Genta
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (M.M.); (R.D.); (I.G.); (B.C.)
| | - Marco Benazzo
- Otorhinolaryngology Unit, Department of Surgical Sciences, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy; (S.M.); (I.H.); (M.B.)
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (M.M.); (R.D.); (I.G.); (B.C.)
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22
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Conductive polycaprolactone/gelatin/polyaniline nanofibres as functional scaffolds for cardiac tissue regeneration. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2021.105064] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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23
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Senatov F, Zimina A, Chubrik A, Kolesnikov E, Permyakova E, Voronin A, Poponova M, Orlova P, Grunina T, Nikitin K, Krivozubov M, Strukova N, Generalova M, Ryazanova A, Manskikh V, Lunin V, Gromov A, Karyagina A. Effect of recombinant BMP-2 and erythropoietin on osteogenic properties of biomimetic PLA/PCL/HA and PHB/HA scaffolds in critical-size cranial defects model. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2022; 135:112680. [DOI: 10.1016/j.msec.2022.112680] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 01/14/2022] [Accepted: 01/21/2022] [Indexed: 12/28/2022]
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24
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Wang G, Ren H, Chen Q, Zhou M, Xie F, Yan M, Wang Q, Bi H. Eco‐friendly
PCL
@
CDs
biomaterials via phytic acid,
CDs
‐cocatalyzed polymerization for rifapentin delivery. J Appl Polym Sci 2021. [DOI: 10.1002/app.51984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Guoyu Wang
- College of Chemistry and Chemical Engineering Anhui University Hefei China
| | - Huifang Ren
- College of Chemistry and Chemical Engineering Anhui University Hefei China
| | - Qiuyang Chen
- College of Chemistry and Chemical Engineering Anhui University Hefei China
| | - Mingchen Zhou
- College of Chemistry and Chemical Engineering Anhui University Hefei China
| | - Fei Xie
- College of Chemistry and Chemical Engineering Anhui University Hefei China
| | - Manqing Yan
- College of Chemistry and Chemical Engineering Anhui University Hefei China
| | - Qiyang Wang
- College of Chemistry and Chemical Engineering Anhui University Hefei China
| | - Hong Bi
- College of Chemistry and Chemical Engineering Anhui University Hefei China
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25
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Tableted hydrophilic electrospun nanofibers to promote meloxicam dissolution rate. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102878] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Patel PR, Pandey K, Killi N, Gundloori RVN. Manipulating hydrophobicity of polyester nanofiber mats with egg albumin to enhance cell interactions. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25776] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Pratikshkumar R. Patel
- Polymer Science and Engineering CSIR‐National Chemical Laboratory Pune Maharashtra India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh India
| | - Komal Pandey
- Polymer Science and Engineering CSIR‐National Chemical Laboratory Pune Maharashtra India
| | - Naresh Killi
- Polymer Science and Engineering CSIR‐National Chemical Laboratory Pune Maharashtra India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh India
| | - Rathna Venkata Naga Gundloori
- Polymer Science and Engineering CSIR‐National Chemical Laboratory Pune Maharashtra India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh India
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27
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Carazzai R, Brizuela Guerra N, Corbellini Henckes NA, dos Santos de Oliveira F, Obino Cirne-Lima E, Loureiro dos Santos LA. Electrospun natural rubber latex biocomposite for scaffolds in tissue engineering. J BIOACT COMPAT POL 2021. [DOI: 10.1177/08839115211046415] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Fibrous scaffold along with seed cells are essential players for engineered tissue regeneration. Recently, PLGA/epoxidized poly(isoprene) dense membranes have been evaluated for cell growth and have shown satisfactory results. However, porous and fibrous structures suitable for obtaining 3D supports have not yet been evaluated for the PLGA/epoxidized poly(isoprene). The present work aimed to establish the electrospinning conditions for obtaining electrospun membranes with a smaller diameter of fibers and adequate morphology, which were characterized in vitro by their physical, chemical and biological properties. The best electrospun fibers were obtained from the following conditions: an applied voltage of 15 kV, a needle-collector distance of 20 cm and, a flow rate of 5 mL/h. The functional groups of the polymers involved in the blend did not show any changes. The mechanical properties of the electrospun membranes are within the lower limits known to human skin and some soft tissues. The in vitro degradation test showed a loss of mass of approximately 20% in 28 days. Significant adhesion and proliferation of human adipose–derived mesenchymal stem cells were demonstrated, indicating that there was cellular penetration into the scaffold and proliferation. Therefore, the preliminary results suggest that the electrospun PLGA/epoxidized poly(isoprene) membranes have high potential for application as a 3D tissue engineering scaffold.
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Affiliation(s)
- Rafael Carazzai
- Advanced Ceramics and Biomaterials Laboratory, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Nayrim Brizuela Guerra
- Advanced Ceramics and Biomaterials Laboratory, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
- Area of Exact Sciences and Engineering, University of Caxias do Sul, Caxias do Sul, Brazil
| | | | | | - Elizabeth Obino Cirne-Lima
- Embryology and Cell Differentiation Laboratory, Clinics Hospital the Porto Alegre, Porto Alegre, Brazil
- Veterinary Faculty, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
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28
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Dorati R, Chiesa E, Rosalia M, Pisani S, Genta I, Bruni G, Modena T, Conti B. Tubular Electrospun Vancomycin-Loaded Vascular Grafts: Formulation Study and Physicochemical Characterization. Polymers (Basel) 2021; 13:2073. [PMID: 34202454 PMCID: PMC8272178 DOI: 10.3390/polym13132073] [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: 05/27/2021] [Revised: 06/16/2021] [Accepted: 06/18/2021] [Indexed: 02/06/2023] Open
Abstract
This work aimed at formulating tubular grafts electrospun with a size < 6 mm and incorporating vancomycin as an antimicrobial agent. Compared to other papers, the present study succeeded in using medical healthcare-grade polymers and solvents permitted by ICH Topic Q3C (R4). Vancomycin (VMC) was incorporated into polyester synthetic polymers (poly-L-lactide-co-poly-ε-caprolactone and poly lactide-co-glycolide) using permitted solvents; moreover, a surfactant was added to the formulation in order to avoid the precipitation of VMC on fiber surface. A preliminary preformulation study was carried out to evaluate solubility of VMC in different aqueous and organic solvents and its stability. To reduce size of fibers and their orientation, we studied a solvent system based on methylene chloride and acetone (DCM/acetone), at different ratios (80:20, 70:30, and 60:40). Considering conductivity of solutions and their spinnability, solvent system at a 80:20 ratio was selected for the study. SEM images demonstrated that size of fibers, their distribution, and their orientation were affected by the incorporation of VMC and surfactant into polymer solution. Surfactant allowed for the reduction of precipitates of VMC on fiber surface, which are responsible of the high burst release in the first six hours; the release was mainly dependent on graft structure porosity, number of pores, and graft absorbent capability. A controlled release of VMC was achieved, covering a period from 96 to 168 h as a function of composition and structure; the concentration of VMC was significantly beyond VMC minimum inhibitory concentration (MIC, 2 ug/mL). These results indicated that the VMC tubular electrospun grafts not only controlled the local release of VMC, but also avoided onset of antibiotic resistance.
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Affiliation(s)
- Rossella Dorati
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (E.C.); (M.R.); (I.G.); (T.M.); (B.C.)
| | - Enrica Chiesa
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (E.C.); (M.R.); (I.G.); (T.M.); (B.C.)
| | - Mariella Rosalia
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (E.C.); (M.R.); (I.G.); (T.M.); (B.C.)
| | - Silvia Pisani
- Immunology and Transplantation Laboratory, Pediatric Hematology Oncology Unit, Department of Maternal and Children’s Health, Fondazione IRCCS Policlinico S. Matteo, 27100 Pavia, Italy;
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (E.C.); (M.R.); (I.G.); (T.M.); (B.C.)
| | - Giovanna Bruni
- Department of Chemistry, Physical Chemistry Section, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy;
| | - Tiziana Modena
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (E.C.); (M.R.); (I.G.); (T.M.); (B.C.)
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (E.C.); (M.R.); (I.G.); (T.M.); (B.C.)
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Chagas PA, Schneider R, dos Santos DM, Otuka AJ, Mendonça CR, Correa DS. Bilayered electrospun membranes composed of poly(lactic-acid)/natural rubber: A strategy against curcumin photodegradation for wound dressing application. REACT FUNCT POLYM 2021. [DOI: 10.1016/j.reactfunctpolym.2021.104889] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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30
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Pisani S, Dorati R, Genta I, Benazzo M, Conti B, Prina Mello A. A study focused on macrophages modulation induced by the Polymeric Electrospun Matrices (EL-Ms) for application in tissue regeneration: In vitro proof of concept. Int J Pharm 2021; 603:120712. [PMID: 34015377 DOI: 10.1016/j.ijpharm.2021.120712] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/11/2021] [Accepted: 05/12/2021] [Indexed: 12/11/2022]
Abstract
A successful regenerative process has to consider the role of immune system after surgical implantation of a polymer-based matrix due to the reaction of monocytes and macrophages cells after contact with biomaterial. Pro-inflammatory (TNF-alfa, IL-6 and IL-8) and anti-inflammatory (IL-10) cytokines released by macrophages cells are fundamental in acute inflammatory response (2-3 days) to destroy pathogens and help scaffold during regenerative process supporting the up-regulation of ECM and endothelial progenitor cells. Aim of this work was to evaluate the in vitro acute response induced by pre-optimized polymeric electrospun matrices (EL-Ms), after 3 days contact with macrophages (M0) and EL-Ms ability to modulate M1 and/or M2 macrophages polarization. Biological characterization included MTT, LDH and Live/Dead assays, immunological characterization by ELISA for cytokine-expression levels determination. Morphological characterization was carried out by Confocal Laser Scanning Microscopy and Scanning Electron Microscopy. The results showed an initial pro-inflammatory response (after 24 h) characterized by release of TNF-alfa, IL-6 and IL-8 cytokines. A preferential anti-inflammatory response was highlighted after 72 h, demonstrated by higher release of IL-10 and elongation of macrophages in contact with EL-Ms, that is typical of M2 cell polarization. EL-Ms could be used as eligible support to enhance tissue regeneration promoting an anti-inflammatory response.
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Affiliation(s)
- Silvia Pisani
- Immunology and Transplantation Laboratory, Fondazione IRCCS Policlinico S. Matteo, Pavia, Italy.
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, Italy; Polymerix S.r.l., Via Taramelli 24, 27100 Pavia, Italy
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Italy; Polymerix S.r.l., Via Taramelli 24, 27100 Pavia, Italy
| | - Marco Benazzo
- Department of Surgery, Otolaryngologist Section, IRCCS Policlinico S. Matteo, 27100 Pavia, Italy
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Italy; Polymerix S.r.l., Via Taramelli 24, 27100 Pavia, Italy.
| | - Adriele Prina Mello
- LBCAM, Department of Clinical Medicine, Trinity Translational Medicine Institute, Trinity College Dublin, Dublin 8, Ireland; Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, Dublin 2, Ireland.
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31
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Kirillova A, Yeazel TR, Asheghali D, Petersen SR, Dort S, Gall K, Becker ML. Fabrication of Biomedical Scaffolds Using Biodegradable Polymers. Chem Rev 2021; 121:11238-11304. [PMID: 33856196 DOI: 10.1021/acs.chemrev.0c01200] [Citation(s) in RCA: 94] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Degradable polymers are used widely in tissue engineering and regenerative medicine. Maturing capabilities in additive manufacturing coupled with advances in orthogonal chemical functionalization methodologies have enabled a rapid evolution of defect-specific form factors and strategies for designing and creating bioactive scaffolds. However, these defect-specific scaffolds, especially when utilizing degradable polymers as the base material, present processing challenges that are distinct and unique from other classes of materials. The goal of this review is to provide a guide for the fabrication of biodegradable polymer-based scaffolds that includes the complete pathway starting from selecting materials, choosing the correct fabrication method, and considering the requirements for tissue specific applications of the scaffold.
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Affiliation(s)
- Alina Kirillova
- Thomas Lord Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, United States
| | - Taylor R Yeazel
- Thomas Lord Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, United States
| | - Darya Asheghali
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Shannon R Petersen
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Sophia Dort
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Ken Gall
- Thomas Lord Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, United States
| | - Matthew L Becker
- Thomas Lord Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, United States.,Department of Chemistry, Duke University, Durham, North Carolina 27708, United States.,Departments of Biomedical Engineering and Orthopaedic Surgery, Duke University, Durham, North Carolina 27708, United States
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Heidari BS, Chen P, Ruan R, Davachi SM, Al-Salami H, De Juan Pardo E, Zheng M, Doyle B. A novel biocompatible polymeric blend for applications requiring high toughness and tailored degradation rate. J Mater Chem B 2021; 9:2532-2546. [PMID: 33660730 DOI: 10.1039/d0tb02971h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Finding the right balance in mechanical properties and degradation rate of biodegradable materials for biomedical applications is challenging, not only at the time of implantation but also during biodegradation. For instance, high elongation at break and toughness with a mid-term degradation rate are required for tendon scaffold or suture application, which cannot be found in each alpha polyester individually. Here, we hypothesise that blending semi-crystalline poly(p-dioxanone) (PDO) and poly(lactide-co-caprolactone) (LCL) in a specific composition will enhance the toughness while also enabling tailored degradation times. Hence, blends of PDO and LCL (PDO/LCL) were prepared in varying concentrations and formed into films by solvent casting. We thoroughly characterised the chemical, thermal, morphological, and mechanical properties of the new blends before and during hydrolytic degradation. Cellular performance was determined by seeding mouse fibroblasts onto the samples and culturing for 72 hours, before using proliferation assays and confocal imaging. We found that an increase in LCL content causes a decrease in hydrolytic degradation rate, as indicated by induced crystallinity, surface and bulk erosions, and tensile properties. Interestingly, the noncytotoxic blend containing 30% PDO and 70% LCL (PDO3LCL7) resulted in small PDO droplets uniformly dispersed within the LCL matrix and demonstrated a tailored degradation rate and toughening behaviour with a notable strain-hardening effect reaching 320% elongation at break; over 3 times the elongation of neat LCL. In summary, this work highlights the potential of PDO3LCL7 as a biomaterial for biomedical applications like tendon tissue engineering or high-performance absorbable sutures.
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Affiliation(s)
- Behzad Shiroud Heidari
- Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands and the UWA Centre for Medical Research, The University of Western Australia, Perth, Australia.
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Dorati R, Pisani S, Chiesa E, Genta I, Bruni G, Modena T, Conti B. Electrospun tubular vascular grafts to replace damaged peripheral arteries: A preliminary formulation study. Int J Pharm 2021; 596:120198. [PMID: 33540017 DOI: 10.1016/j.ijpharm.2021.120198] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 12/21/2020] [Accepted: 12/22/2020] [Indexed: 12/12/2022]
Abstract
Polymeric tubular vascular grafts represent a likely alternative to autologous vascular grafts for treating peripheral artery occlusive disease. This preliminary research study applied cutting-edge electrospinning technique for manufacturing prototypes with diameter ≤ 6 mm and based on biocompatible and biodegradable polymers such as polylactide-polycaprolactone, polylactide-co-glycolide and polyhydroxyethylmethacrylate combined in different design approaches (layering and blending). Samples were characterized about fiber morphology, diameter, size distribution, porosity, fluid uptake capability, and mechanical properties. Biocompatibility and cell interaction were evaluated by in vitro test. Goal of this preliminary study was to discriminate among the prototypes and select which composition and design approach could better suit tissue regeneration purposes. Results showed that electrospinning technique is suitable to obtain grafts with a diameter < 6 mm and thickness between 140 ± 7-175 ± 4 μm. Scanning electron microscopy analysis showed fibers with suitable micrometric diameters and pore size between 5 and 35 μm. polyhydroxyethylmethacrylate provided high hydrophilicity (≃ 100°) and optimal cell short term proliferation (cell viability ≃ 160%) in accordance with maximum fluid uptake ability (300-350%). Moreover, addition of polyhydroxyethylmethacrylate lowered suture retention strength at value < 1 N. Prototypes obtaining combining polylactide-co-glycolide and polylactide-coglycolide/ polyhydroxyethylmethacrylate with polylactide-polycaprolactone in a bilayered structure showed optimal mechanical behavior resembling native bovine vessel.
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Affiliation(s)
- Rossella Dorati
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; Polymerix s.r.l., Parco Tecnico Scientifico (PTS), Via Taramelli 20, 27100 Pavia, Italy
| | - Silvia Pisani
- Immunology and Transplantation Laboratory, Pediatric Hematology Oncology Unit, Department of Maternal and Children's Health, Fondazione IRCCS Policlinico S. Matteo, 27100 Pavia, Italy
| | - Enrica Chiesa
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; Polymerix s.r.l., Parco Tecnico Scientifico (PTS), Via Taramelli 20, 27100 Pavia, Italy
| | - Giovanna Bruni
- Department of Chemistry, Physical Chemistry Section, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Tiziana Modena
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; Polymerix s.r.l., Parco Tecnico Scientifico (PTS), Via Taramelli 20, 27100 Pavia, Italy
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; Polymerix s.r.l., Parco Tecnico Scientifico (PTS), Via Taramelli 20, 27100 Pavia, Italy
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Hajikhani M, Emam Djomeh Z, Askari G. Lycopene loaded polylactic acid (PLA) and PLA/copolymer electrospun nanofibers, synthesis, characterization, and control release. J FOOD PROCESS PRES 2020. [DOI: 10.1111/jfpp.15055] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Mehdi Hajikhani
- Transport Phenomena Laboratory (TPL) Department of Food Science and Technology University College of Agriculture and Natural Resources University of Tehran Karaj Iran
| | - Zahra Emam Djomeh
- Transport Phenomena Laboratory (TPL) Department of Food Science and Technology University College of Agriculture and Natural Resources University of Tehran Karaj Iran
| | - Gholamreza Askari
- Transport Phenomena Laboratory (TPL) Department of Food Science and Technology University College of Agriculture and Natural Resources University of Tehran Karaj Iran
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New way of anionic ring-opening copolymerization of β-butyrolactone and ε-caprolactone: determination of the reaction course. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-020-02333-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
AbstractPoly(ε-caprolactone)-block-poly(β-butyrolactone) copolymers were prepared in two-step synthesis. Firstly, poly(ε-caprolactone) (PCL) was obtained by anionic ring-opening polymerization of CL initiated with anhydrous KOH activated 12-crown-4 cation complexing agent. Reaction was carried out in tetrahydrofuran solution and argon atmosphere at room temperature. Then, β-butyrolactone (BL) and 18-crown-6 were added to the system, resulting in PCL-block-PBL copolymer, which contains after methylation hydroxyl starting group and methyl ester end group. The main product was contaminated with PCL and PBL homopolymers formed in a side reactions. 13C NMR technique was used for determination of chemical structure of polymers obtained. The course of the studied processes was proposed. MALDI-TOF technique was used to reveal the macromolecules’ architecture where several series were found. The identified series shown that mainly copolymeric macromolecules were formed with scare contribution of homopolymeric polybutyrolactone with trans-crotonate starting groups and polycaprolactone, which is congruent with the proposed reaction mechanism. Moreover, critical approach concerning previously reported PCL-block-PBL copolymer synthesis by use of NaH as initiator was also presented.
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The Effect of Process Parameters on Alignment of Tubular Electrospun Nanofibers for Tissue Regeneration Purposes. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101781] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Chiesa E, Dorati R, Pisani S, Bruni G, Rizzi LG, Conti B, Modena T, Genta I. Graphene Nanoplatelets for the Development of Reinforced PLA-PCL Electrospun Fibers as the Next-Generation of Biomedical Mats. Polymers (Basel) 2020; 12:polym12061390. [PMID: 32575840 PMCID: PMC7362196 DOI: 10.3390/polym12061390] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/17/2020] [Accepted: 06/19/2020] [Indexed: 12/24/2022] Open
Abstract
Electrospun scaffolds made of nano- and micro-fibrous non-woven mats from biodegradable polymers have been intensely investigated in recent years. In this field, polymer-based materials are broadly used for biomedical applications since they can be managed in high scale, easily shaped, and chemically changed to tailor their specific biologic properties. Nonetheless polymeric materials can be reinforced with inorganic materials to produce a next-generation composite with improved properties. Herein, the role of graphene nanoplatelets (GNPs) on electrospun poly-l-lactide-co-poly-ε-caprolactone (PLA-PCL, 70:30 molar ratio) fibers was investigated. Microfibers of neat PLA-PCL and with different amounts of GNPs were produced by electrospinning and they were characterized for their physicochemical and biologic properties. Results showed that GNPs concentration notably affected the fibers morphology and diameters distribution, influenced PLA-PCL chain mobility in the crystallization process and tuned the mechanical and thermal properties of the electrospun matrices. GNPs were also liable of slowing down copolymer degradation rate in simulated physiological environment. However, no toxic impurities and degradation products were pointed out up to 60 d incubation. Furthermore, preliminary biologic tests proved the ability of the matrices to enhance fibroblast cells attachment and proliferation probably due to their unique 3D-interconnected structure.
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Affiliation(s)
- Enrica Chiesa
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12—27100 Pavia, Italy; (E.C.); (R.D.); (B.C.); (T.M.)
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12—27100 Pavia, Italy; (E.C.); (R.D.); (B.C.); (T.M.)
- Polymerix srl, V.le Taramelli 24—27100 Pavia, Italy
| | - Silvia Pisani
- Immunology and Transplantation Laboratory, Pedriatric Hematology Oncology Unit, Department of Maternal and Children’s Health, Fondazione IRCCS Policlinico S. Matteo—27100 Pavia, Italy;
| | - Giovanna Bruni
- Department of Chemistry, Physical Chemistry Section, University of Pavia, Via Taramelli 12/14, 27100 Pavia, PV, Italy;
| | - Laura G. Rizzi
- Directa Plus S.p.a., COMO NexT, Via Cavour, 2—22074 Lomazzo (CO), Italy;
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12—27100 Pavia, Italy; (E.C.); (R.D.); (B.C.); (T.M.)
- Polymerix srl, V.le Taramelli 24—27100 Pavia, Italy
| | - Tiziana Modena
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12—27100 Pavia, Italy; (E.C.); (R.D.); (B.C.); (T.M.)
- Polymerix srl, V.le Taramelli 24—27100 Pavia, Italy
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12—27100 Pavia, Italy; (E.C.); (R.D.); (B.C.); (T.M.)
- Polymerix srl, V.le Taramelli 24—27100 Pavia, Italy
- Correspondence: ; Tel.: +39-0382987371
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Pisani S, Genta I, Dorati R, Kavatzikidou P, Angelaki D, Manousaki A, Karali K, Ranella A, Stratakis E, Conti B. Biocompatible polymeric electrospun matrices: Micro–nanotopography effect on cell behavior. J Appl Polym Sci 2020. [DOI: 10.1002/app.49223] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Silvia Pisani
- Department of Drug SciencesUniversity of Pavia Pavia Italy
| | - Ida Genta
- Department of Drug SciencesUniversity of Pavia Pavia Italy
| | - Rossella Dorati
- Department of Drug SciencesUniversity of Pavia Pavia Italy
- Polymerix s.r.l., Parco Tecnico Scientifico, Via Taramelli 20 Pavia Italy
| | - Paraskevi Kavatzikidou
- Institute of Electronic Structure and LaserFoundation for Research and Technology ‐ Hellas Heraklion, Crete Greece
| | - Despoina Angelaki
- Institute of Electronic Structure and LaserFoundation for Research and Technology ‐ Hellas Heraklion, Crete Greece
| | - Aleka Manousaki
- Institute of Electronic Structure and LaserFoundation for Research and Technology ‐ Hellas Heraklion, Crete Greece
| | - Kanelina Karali
- Institute of Electronic Structure and LaserFoundation for Research and Technology ‐ Hellas Heraklion, Crete Greece
- Department of PhysicsUniversity of Crete Heraklion, Crete Greece
| | - Anthi Ranella
- Institute of Electronic Structure and LaserFoundation for Research and Technology ‐ Hellas Heraklion, Crete Greece
| | - Emmanuel Stratakis
- Institute of Electronic Structure and LaserFoundation for Research and Technology ‐ Hellas Heraklion, Crete Greece
- Department of PhysicsUniversity of Crete Heraklion, Crete Greece
| | - Bice Conti
- Department of Drug SciencesUniversity of Pavia Pavia Italy
- Polymerix s.r.l., Parco Tecnico Scientifico, Via Taramelli 20 Pavia Italy
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Pisani S, Croce S, Chiesa E, Dorati R, Lenta E, Genta I, Bruni G, Mauramati S, Benazzo A, Cobianchi L, Morbini P, Caliogna L, Benazzo M, Avanzini MA, Conti B. Tissue Engineered Esophageal Patch by Mesenchymal Stromal Cells: Optimization of Electrospun Patch Engineering. Int J Mol Sci 2020; 21:ijms21051764. [PMID: 32143536 PMCID: PMC7084816 DOI: 10.3390/ijms21051764] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 02/28/2020] [Accepted: 03/02/2020] [Indexed: 12/16/2022] Open
Abstract
Aim of work was to locate a simple, reproducible protocol for uniform seeding and optimal cellularization of biodegradable patch minimizing the risk of structural damages of patch and its contamination in long-term culture. Two seeding procedures are exploited, namely static seeding procedures on biodegradable and biocompatible patches incubated as free floating (floating conditions) or supported by CellCrownTM insert (fixed conditions) and engineered by porcine bone marrow MSCs (p-MSCs). Scaffold prototypes having specific structural features with regard to pore size, pore orientation, porosity, and pore distribution were produced using two different techniques, such as temperature-induced precipitation method and electrospinning technology. The investigation on different prototypes allowed achieving several implementations in terms of cell distribution uniformity, seeding efficiency, and cellularization timing. The cell seeding protocol in stating conditions demonstrated to be the most suitable method, as these conditions successfully improved the cellularization of polymeric patches. Furthermore, the investigation provided interesting information on patches’ stability in physiological simulating experimental conditions. Considering the in vitro results, it can be stated that the in vitro protocol proposed for patches cellularization is suitable to achieve homogeneous and complete cellularizations of patch. Moreover, the protocol turned out to be simple, repeatable, and reproducible.
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Affiliation(s)
- Silvia Pisani
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (S.P.); (E.C.); (I.G.); (B.C.)
| | - Stefania Croce
- Department of Clinical, Surgical, Diagnostic & Pediatric Sciences, University of Pavia, IRCCS Policlinico S. Matteo, 27100 Pavia, Italy; (S.C.); (L.C.)
| | - Enrica Chiesa
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (S.P.); (E.C.); (I.G.); (B.C.)
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (S.P.); (E.C.); (I.G.); (B.C.)
- Correspondence:
| | - Elisa Lenta
- Department of Paediatric Oncoaematology, IRCCS Policlinico S. Matteo, 27100 Pavia, Italy; (E.L.); (M.A.A.)
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (S.P.); (E.C.); (I.G.); (B.C.)
| | - Giovanna Bruni
- Department of Chemistry, University of Pavia, 27100 Pavia, Italy;
| | - Simone Mauramati
- Department of Surgery, Otolaryngologist section, IRCCS Policlinico S. Matteo, 27100 Pavia, Italy; (S.M.); (M.B.)
| | - Alberto Benazzo
- Department of Surgery, Medical University of Vienna, 1090 Vienna, Austria;
| | - Lorenzo Cobianchi
- Department of Clinical, Surgical, Diagnostic & Pediatric Sciences, University of Pavia, IRCCS Policlinico S. Matteo, 27100 Pavia, Italy; (S.C.); (L.C.)
| | - Patrizia Morbini
- Department of Diagnostic Medicine, IRCCS Policlinico S. Matteo, 27100 Pavia, Italy;
| | - Laura Caliogna
- Orthopaedic and Traumatology, IRCCS Policlinico San Matteo, 27100 Pavia, Italy;
| | - Marco Benazzo
- Department of Surgery, Otolaryngologist section, IRCCS Policlinico S. Matteo, 27100 Pavia, Italy; (S.M.); (M.B.)
| | - Maria Antonietta Avanzini
- Department of Paediatric Oncoaematology, IRCCS Policlinico S. Matteo, 27100 Pavia, Italy; (E.L.); (M.A.A.)
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (S.P.); (E.C.); (I.G.); (B.C.)
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Sakil Mahmud, Long Y, Yang Y, Huang J, Zhang R, Zhu J. The Consequence of Epoxidized Soybean Oil in the Toughening of Polylactide and Micro-Fibrillated Cellulose Blend. POLYMER SCIENCE SERIES A 2020. [DOI: 10.1134/s0965545x2001006x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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KESMEZ Ö. Preparation of anti-bacterial biocomposite nanofibers fabricated by electrospinning method. JOURNAL OF THE TURKISH CHEMICAL SOCIETY, SECTION A: CHEMISTRY 2019. [DOI: 10.18596/jotcsa.590621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Stepanova M, Averianov I, Serdobintsev M, Gofman I, Blum N, Semenova N, Nashchekina Y, Vinogradova T, Korzhikov-Vlakh V, Karttunen M, Korzhikova-Vlakh E. PGlu-Modified Nanocrystalline Cellulose Improves Mechanical Properties, Biocompatibility, and Mineralization of Polyester-Based Composites. MATERIALS 2019; 12:ma12203435. [PMID: 31640122 PMCID: PMC6829302 DOI: 10.3390/ma12203435] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 10/17/2019] [Accepted: 10/18/2019] [Indexed: 01/09/2023]
Abstract
The development of biocompatible composite materials is in high demand in many fields such as biomedicine, bioengineering, and biotechnology. In this study, two series of poly (D,L-lactide) and poly (ε-caprolactone)-based films filled with neat and modified with poly (glutamic acid) (PGlu) nanocrystalline cellulose (NCC) were prepared. An analysis of scanning electron and atomic force microscopies' results shows that the modification of NCC with poly (glutamic acid) favored the better distribution of the nanofiller in the polymer matrix. Investigating the ability of the developed materials to attract and retain calcium ions led to the conclusion that composites containing NCC modified with PGlu induced better mineralization from model solutions than composites containing neat NCC. Moreover, compared to unmodified NCC, functionalization with PGlu improved the mechanical properties of composite films. The subcutaneous implantation of these composite materials into the backs of rats and the further histological investigation of neighboring tissues revealed the better biocompatibility of polyester materials filled with NCC-PGlu.
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Affiliation(s)
- Mariia Stepanova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg 199004, Russia.
| | - Ilia Averianov
- Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg 199004, Russia.
| | - Mikhail Serdobintsev
- St. Petersburg Research Institute of Phtysiopulmonology, St. Petersburg 194064, Russia.
| | - Iosif Gofman
- Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg 199004, Russia.
| | - Natalya Blum
- Interregional Laboratory Center, St. Petersburg 192283, Russia.
| | | | - Yuliya Nashchekina
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg 194064, Russia.
| | - Tatiana Vinogradova
- St. Petersburg Research Institute of Phtysiopulmonology, St. Petersburg 194064, Russia.
| | - Viktor Korzhikov-Vlakh
- Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg 199004, Russia.
- Institute of Chemistry, Saint-Petersburg State University, St. Petersburg 199034, Russia.
| | - Mikko Karttunen
- Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg 199004, Russia.
- Department of Applied Mathematics, The University of Western Ontario, 1151 Richmond str., London, ON N5A 5B7, Canada.
- The Centre for Advanced Materials and Biomaterials Research, The University of Western Ontario, 1151 Richmond str., London, ON N6A 3K7, Canada.
- Department of Chemistry, The University of Western Ontario, 1151 Richmond str., London, ON N6A 3K7, Canada.
| | - Evgenia Korzhikova-Vlakh
- Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg 199004, Russia.
- Institute of Chemistry, Saint-Petersburg State University, St. Petersburg 199034, Russia.
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Pisani S, Dorati R, Chiesa E, Genta I, Modena T, Bruni G, Grisoli P, Conti B. Release Profile of Gentamicin Sulfate from Polylactide- co-Polycaprolactone Electrospun Nanofiber Matrices. Pharmaceutics 2019; 11:E161. [PMID: 30987212 PMCID: PMC6523179 DOI: 10.3390/pharmaceutics11040161] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Revised: 03/28/2019] [Accepted: 03/30/2019] [Indexed: 11/30/2022] Open
Abstract
The advent and growth of resistance phenomena to antibiotics has reached critical levels, invalidating the action of a majority of antibiotic drugs currently used in the clinical field. Several innovative techniques, such as the nanotechnology, can be applied for creating innovative drug delivery systems designed to modify drug release itself and/or drug administration route; moreover, they have proved suitable for overcoming the phenomenon of antibiotic resistance. Electrospun nanofibers, due to their useful structural properties, are showing promising results as antibiotic release devices for preventing bacteria biofilm formation after surgical operation and for limiting resistance phenomena. In this work gentamicin sulfate (GS) was loaded into polylactide-co-polycaprolactone (PLA-PCL) electrospun nanofibers; quantification and in vitro drug release profiles in static and dynamic conditions were investigated; GS kinetic release from nanofibers was studied using mathematical models. A preliminary microbiological test was carried out towards Staphylococcus aureus and Escherichia coli bacteria.
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Affiliation(s)
- Silvia Pisani
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12/14, 27100 Pavia, Italy.
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12/14, 27100 Pavia, Italy.
- Polymerix S.r.l., Via Taramelli 24, 27100 Pavia, Italy.
| | - Enrica Chiesa
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12/14, 27100 Pavia, Italy.
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12/14, 27100 Pavia, Italy.
| | - Tiziana Modena
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12/14, 27100 Pavia, Italy.
- Polymerix S.r.l., Via Taramelli 24, 27100 Pavia, Italy.
| | - Giovanna Bruni
- Department of Chemistry, University of Pavia, Viale Taramelli 12/14, 27100 Pavia, Italy.
| | - Pietro Grisoli
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12/14, 27100 Pavia, Italy.
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12/14, 27100 Pavia, Italy.
- Polymerix S.r.l., Via Taramelli 24, 27100 Pavia, Italy.
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de Farias BS, Sant'Anna Cadaval Junior TR, de Almeida Pinto LA. Chitosan-functionalized nanofibers: A comprehensive review on challenges and prospects for food applications. Int J Biol Macromol 2019; 123:210-220. [DOI: 10.1016/j.ijbiomac.2018.11.042] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 11/05/2018] [Accepted: 11/08/2018] [Indexed: 12/22/2022]
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Electrospun Produced 3D Matrices for Covering of Vascular Stents: Paclitaxel Release Depending on Fiber Structure and Composition of the External Environment. MATERIALS 2018; 11:ma11112176. [PMID: 30400260 PMCID: PMC6265738 DOI: 10.3390/ma11112176] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 10/29/2018] [Accepted: 10/31/2018] [Indexed: 12/26/2022]
Abstract
Paclitaxel is a natural, highly lipophilic anti proliferative drug widely used in medicine. We have studied the release of tritium-labeled paclitaxel (3H-PTX) from matrices destined for the coating of vascular stents and produced by the electrospinning method from the solutions of polycaprolactone (PCL) with paclitaxel (PTX) in hexafluoisopropanol (HFIP) and/or solutions of PCL with PTX and human serum albumin (HSA) in HFIP or HIFP-dimethyl sulphoxide (DMSO) blend. The release of PTX has been shown to depend on the composition of electrospinning solution, as well as the surrounding medium, particularly the concentration of free PTX and PTX-binding biomolecules present in human serum. It was shown that 3D matrices can completely release PTX without weight loss. Two-phase PTX release from optimized 3D matrices was obtained: ~27% of PTX was released in the first day, another 8% were released over the next 26 days. Wherein ~2.8%, ~2.3%, and ~0.25% of PTX was released on day 3, 9, and 27, respectively. Considering PTX toxicity, the rate of its diffusion through the arterial wall, and the data obtained the minimum cytostatic dose of the drug in the arterial wall will be maintained for at least three months.
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Castillejos S, Cerna J, Meléndez F, Castro ME, Aguilar R, Márquez-Beltrán C, González M. Bulk Modification of Poly(lactide) (PLA) via Copolymerization with Poly(propylene glycol) Diglycidylether (PPGDGE). Polymers (Basel) 2018; 10:polym10111184. [PMID: 30961109 PMCID: PMC6290617 DOI: 10.3390/polym10111184] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 10/15/2018] [Accepted: 10/18/2018] [Indexed: 11/05/2022] Open
Abstract
Copolymers of l-lactide and poly(propylene glycol) diglycidyl ether (PPGDGE380) were synthesized by ring opening polymerization (ROP). Stannous octoate was used as the catalyst and 1-dodecanol as the initiator. The effect of the variables on the thermal properties of the copolymers was investigated by differential scanning calorimetry (DSC). Contact angle measurements were made in order to study the wettability of the synthesized copolymers. The copolymers differed widely in their physical characteristics, ranging from weak elastomers to tougher thermoplastics, according to the ratio of l-lactide and PPGDGE380. The results showed that the copolymers were more hydrophilic than neat Poly(lactide) (PLA) and the monomer ratio had a strong influence on the hydrophilic properties.
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Affiliation(s)
- Sandra Castillejos
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Ciudad Universitaria, Puebla 72570, Mexico.
| | - Jorge Cerna
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Ciudad Universitaria, Puebla 72570, Mexico.
| | - Francisco Meléndez
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Ciudad Universitaria, Puebla 72570, Mexico.
| | - María Eugenia Castro
- Instituto de Ciencias de la Universidad Autónoma de Puebla, Benemérita Universidad Autónoma de Puebla, Ciudad Universitaria, Puebla 72570, Mexico.
| | - Rocío Aguilar
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Ciudad Universitaria, Puebla 72570, Mexico.
| | - César Márquez-Beltrán
- Instituto de Física, Benemérita Universidad Autónoma de Puebla, Ciudad Universitaria, Puebla 72570, Mexico.
| | - Maykel González
- Tecnológico de Monterrey, Escuela de Ingeniería y Ciencias, Campus Puebla, Puebla 72453, Mexico.
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47
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Nowlin J, Bismi MA, Delpech B, Dumas P, Zhou Y, Tan GZ. Engineering the hard-soft tissue interface with random-to-aligned nanofiber scaffolds. Nanobiomedicine (Rij) 2018; 5:1849543518803538. [PMID: 30302132 PMCID: PMC6170958 DOI: 10.1177/1849543518803538] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 08/29/2018] [Indexed: 12/14/2022] Open
Abstract
Tendon injuries can be difficult to heal and have high rates of relapse due to stress concentrations caused by scar formation and the sutures used in surgical repair. Regeneration of the tendon/ligament-to-bone interface is critical to provide functional graft integration after injury. The objective of this study is to recreate the tendon-to-bone interface using a gradient scaffold which is fabricated by a one-station electrospinning process. Two cell phenotypes were grown on a poly-ε-caprolactone nanofiber scaffold which possesses a gradual transition from random to aligned nanofiber patterns. We assessed the effects of the polymer concentration, tip-to-collector distance, and electrospinning time on the microfiber diameter and density. Osteosarcoma and fibroblast cells were seeded on the random and aligned sections of scaffolds, respectively. A random-to-aligned cocultured tissue interface which mimicked the native transition in composition of enthesis was created after 96 h culturing. The results showed that the microstructure gradient influenced the cell morphology, tissue topology, and promoted enthesis formation. This study demonstrates a heterogeneous nanofiber scaffold strategy for interfacial tissue regeneration. It provides a potential solution for mimicking transitional interface between distinct tissues, and can be further developed as a heterogeneous cellular composition platform to facilitate the formation of multi-tissue complex systems.
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Affiliation(s)
- John Nowlin
- Department of Mechanical Engineering, Texas Tech University, Lubbock, Texas, USA
| | - Mehzubh A Bismi
- Department of Mechanical Engineering, Texas Tech University, Lubbock, Texas, USA
| | - Baptiste Delpech
- Department of Chemical Engineering, Texas Tech University, Lubbock, Texas, USA
| | - Patrick Dumas
- Department of Biomedical Engineering, Texas Tech University, Lubbock, Texas, USA
| | - Yingge Zhou
- Department of Industrial, Manufacturing & Systems Engineering, Texas Tech University, Lubbock, Texas, USA
| | - George Z Tan
- Department of Industrial, Manufacturing & Systems Engineering, Texas Tech University, Lubbock, Texas, USA
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48
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Horakova J, Mikes P, Lukas D, Saman A, Jencova V, Klapstova A, Svarcova T, Ackermann M, Novotny V, Kalab M, Lonsky V, Bartos M, Rampichova M, Litvinec A, Kubikova T, Tomasek P, Tonar Z. Electrospun vascular grafts fabricated from poly(L-lactide-co-ε-caprolactone) used as a bypass for the rabbit carotid artery. ACTA ACUST UNITED AC 2018; 13:065009. [PMID: 30177582 DOI: 10.1088/1748-605x/aade9d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The study involved the electrospinning of the copolymer poly(L-lactide-co-ε-caprolactone) (PLCL) into tubular grafts. The subsequent material characterization, including micro-computed tomography analysis, revealed a level of porosity of around 70%, with pore sizes of 9.34 ± 0.19 μm and fiber diameters of 5.58 ± 0.10 μm. Unlike fibrous polycaprolactone, the electrospun PLCL copolymer promoted fibroblast and endothelial cell adhesion and proliferation in vitro. Moreover, the regeneration of the vessel wall was detected following implantation and, after six months, the endothelialization of the lumen and the infiltration of arranged smooth muscle cells producing collagen was observed. However, the degradation rate was found to be accelerated in the rabbit animal model. The study was conducted under conditions that reflected the clinical requirements-the prostheses were sutured in the end-to-side fashion and the long-term end point of prosthesis healing was assessed. The regeneration of the vessel wall in terms of endothelialization, smooth cell infiltration and the presence of collagen fibers was observed after six months in vivo. A part of the grafts failed due to the rapid degradation rate of the PLCL copolymer.
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Affiliation(s)
- Jana Horakova
- Department of Nonwovens and Nanofibrous Materials, Faculty of Textile Engineering, Technical University of Liberec, Studentska 1402/2, 460 01 Liberec, Czechia
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49
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Dorati R, Pisani S, Maffeis G, Conti B, Modena T, Chiesa E, Bruni G, Musazzi UM, Genta I. Study on hydrophilicity and degradability of chitosan/polylactide-co-polycaprolactone nanofibre blend electrospun membrane. Carbohydr Polym 2018; 199:150-160. [PMID: 30143115 DOI: 10.1016/j.carbpol.2018.06.050] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Revised: 06/07/2018] [Accepted: 06/12/2018] [Indexed: 12/31/2022]
Abstract
Electrospinning is an interesting technique to produce polymer membranes made of entangled nanofibres. The technique is raising interest in pharmaceutical and biomedical areas. Either electrospun membranes are studied for tissue regeneration purposes, or incorporation of nanoparticles in electrospun membranes can be an opportunity to control the delivery of drug or to obtain dual drug delivery system. In this work suspensions of hydrochloride chitosan salt in copolymer polylactide-co-polycaprolactone (PLA-PCL) solution were electrospun in order to assess an advanced study for developing polymer nanofibre blend membrane loaded with chitosan polymer. The aim of the work was to investigate the properties and stability of chitosan/PLA-PCL electrospun membranes considering their application for tissue regeneration and drug delivery. The electrospun membranes were characterized for their physico-chemical (FT-IR) morphology (SEM) and in vitro biological properties (cytocompatibility and cells engraftment). Results show that homogeneous electrospun PLA-PCL/chitosan blend nanofibres in the range size 800 nm were obtained. Chitosan was loaded inside the nanofibres up to 27.2% (w/w) without modifying nanofibre shape, and only 6% of the loaded chitosan resulted to be on the nanofibre surface. The presence of chitosan in the nanofibres has shown to accelerate the electrospun membranes degradation in vitro.
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Affiliation(s)
- R Dorati
- Department of Drug Science, University of Pavia, Via Taramelli 12, 27100, Pavia, Italy
| | - S Pisani
- Department of Drug Science, University of Pavia, Via Taramelli 12, 27100, Pavia, Italy
| | - G Maffeis
- Phase I Clinical Trial Unit and Experimental Therapy, IRCCS Policlinico S. Matteo, Viale Camillo Golgi 19, 27100, Pavia, Italy
| | - B Conti
- Department of Drug Science, University of Pavia, Via Taramelli 12, 27100, Pavia, Italy.
| | - T Modena
- Department of Drug Science, University of Pavia, Via Taramelli 12, 27100, Pavia, Italy
| | - E Chiesa
- Department of Drug Science, University of Pavia, Via Taramelli 12, 27100, Pavia, Italy
| | - G Bruni
- Department of Chemistry, Chemical Physical Section University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - U M Musazzi
- Department of Pharmaceutical Sciences, University of Milano, Via Colombo 71, 20133, Milano, Italy
| | - I Genta
- Department of Drug Science, University of Pavia, Via Taramelli 12, 27100, Pavia, Italy
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50
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Modifying an Active Compound's Release Kinetic Using a Supercritical Impregnation Process to Incorporate an Active Agent into PLA Electrospun Mats. Polymers (Basel) 2018; 10:polym10050479. [PMID: 30966513 PMCID: PMC6415505 DOI: 10.3390/polym10050479] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 04/23/2018] [Accepted: 04/24/2018] [Indexed: 01/15/2023] Open
Abstract
The main objective of this work was to study the release of cinnamaldehyde (CIN) from electrospun poly lactic acid (e-PLA) mats obtained through two techniques: (i) direct incorporation of active compound during the electrospinning process (e-PLA-CIN); and (ii) supercritical carbon dioxide (scCO2) impregnation of CIN within electrospun PLA mats (e-PLA/CINimp). The development and characterization of both of these active electrospun mats were investigated with the main purpose of modifying the release kinetic of this active compound. Morphological, structural, and thermal properties of these materials were also studied, and control mats e-PLA and e-PLACO2 were developed in order to understand the effect of electrospinning and scCO2 impregnation, respectively, on PLA properties. Both strategies of incorporation of this active compound into PLA matrix resulted in different morphologies that influenced chemical and physical properties of these composites and in different release kinetics of CIN. The electrospinning and scCO2 impregnation processes and the presence of CIN altered PLA thermal and structural properties when compared to an extruded PLA material. The incorporation of CIN through scCO2 impregnation resulted in higher release rate and lower diffusion coefficients when compared to active electrospun mats with CIN incorporated during the electrospinning process.
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