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Petrova VA, Poshina DN, Golovkin AS, Mishanin AI, Zhuravskii SG, Yukina GY, Naumenko MY, Sukhorukova EG, Savin NA, Erofeev AS, Gofman IV, Ivan'kova EM, Dubashynskaya NV, Yakimansky AV, Skorik YA. Electrospun Composites of Chitosan with Cerium Oxide Nanoparticles for Wound Healing Applications: Characterization and Biocompatibility Evaluation In Vitro and In Vivo. Polymers (Basel) 2024; 16:1787. [PMID: 39000644 PMCID: PMC11243935 DOI: 10.3390/polym16131787] [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: 05/17/2024] [Revised: 06/18/2024] [Accepted: 06/20/2024] [Indexed: 07/17/2024] Open
Abstract
Cerium oxide nanoparticles (CeONPs), as part of tissue regeneration matrices, can protect cells from reactive oxygen species and oxidative stress. In addition, they can influence the properties of the scaffold, including its electrospinnability and mechanical strength. In this work, we prepared electrospun fiber mats from a chitosan and polyethylene oxide blend (CS-PEO) with the addition of ceria nanoparticles (CS-PEO-CeONP). The addition of CeONPs resulted in a smaller fiber diameter and higher swelling compared to CS-PEO fiber mats. CeONP-modified fiber mats also had a higher Young's modulus due to the reinforcing effect of the nanoparticles. Both mats had comparable adhesion and cytocompatibility to mesenchymal stem cells, which had a more rounded morphology on CS-PEO-CeONP compared to elongated cells on the CS-PEO mats. Biocompatibility in an in vivo rat model showed no acute toxicity, no septic or allergic inflammation, and no rough scar tissue formation. The degradation of both mats passed the stage of matrix swelling. CS-PEO-CeONP showed significantly slower biodegradation, with most of the matrix remaining in the tissue after 90 days. The reactive inflammation was aseptic in nature with the involvement of multinucleated foreign-body type giant cells and was significantly reduced by day 90. CeONPs induced the formation of the implant's connective tissue capsule. Thus, the introduction of CeONPs influenced the physicochemical properties and biological activity of CS-PEO nanofiber mats.
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Affiliation(s)
- Valentina A Petrova
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi VO 31, 199004 St. Petersburg, Russia
| | - Daria N Poshina
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi VO 31, 199004 St. Petersburg, Russia
| | - Alexey S Golovkin
- Almazov National Medical Research Centre, Akkuratova 2, 197341 St. Petersburg, Russia
| | - Alexander I Mishanin
- Almazov National Medical Research Centre, Akkuratova 2, 197341 St. Petersburg, Russia
| | - Sergei G Zhuravskii
- Hearing and Speech Laboratory, Pavlov First Saint Petersburg State Medical University, L'va Tolstogo 6-8, 197022 St. Petersburg, Russia
| | - Galina Y Yukina
- Laboratory of Pathomorphology, Pavlov First Saint Petersburg State Medical University, L'va Tolstogo 6-8, 197022 St. Petersburg, Russia
| | - Maria Y Naumenko
- Hearing and Speech Laboratory, Pavlov First Saint Petersburg State Medical University, L'va Tolstogo 6-8, 197022 St. Petersburg, Russia
| | - Elena G Sukhorukova
- Laboratory of Pathomorphology, Pavlov First Saint Petersburg State Medical University, L'va Tolstogo 6-8, 197022 St. Petersburg, Russia
| | - Nikita A Savin
- Laboratory of Biophysics, National University of Science and Technology "MISIS", Leninsky 4, 119049 Moscow, Russia
| | - Alexander S Erofeev
- Laboratory of Biophysics, National University of Science and Technology "MISIS", Leninsky 4, 119049 Moscow, Russia
| | - Iosif V Gofman
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi VO 31, 199004 St. Petersburg, Russia
| | - Elena M Ivan'kova
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi VO 31, 199004 St. Petersburg, Russia
| | - Natallia V Dubashynskaya
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi VO 31, 199004 St. Petersburg, Russia
| | - Alexander V Yakimansky
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi VO 31, 199004 St. Petersburg, Russia
| | - Yury A Skorik
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi VO 31, 199004 St. Petersburg, Russia
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2
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Karthik S, Mohan S, Magesh I, Bharathy A, Kolipaka R, Ganesamoorthi S, Sathiya K, Shanmugavadivu A, Gurunathan R, Selvamurugan N. Chitosan nanocarriers for non-coding RNA therapeutics: A review. Int J Biol Macromol 2024; 263:130361. [PMID: 38395284 DOI: 10.1016/j.ijbiomac.2024.130361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 02/02/2024] [Accepted: 02/19/2024] [Indexed: 02/25/2024]
Abstract
Non-coding RNA (ncRNA)-based therapies entail delivering ncRNAs to cells to regulate gene expression and produce proteins that combat infections, cancer, neurological diseases, and bone abnormalities. Nevertheless, the therapeutic potential of these ncRNAs has been limited due to the difficulties in delivering them to specific cellular targets within the body. Chitosan (CS), a biocompatible cationic polymer, interacts with negatively charged RNA molecules to form stable complexes. It is a promising biomaterial to develop nanocarriers for ncRNA delivery, overcoming several disadvantages of traditional delivery systems. CS-based nanocarriers can protect ncRNAs from degradation and target-specific delivery by surface modifications and intracellular release profiles over an extended period. This review briefly summarizes the recent developments in CS nanocarriers' synthesis and design considerations and their applications in ncRNA therapeutics for treating various diseases. We also discuss the challenges and limitations of CS-based nanocarriers for ncRNA therapeutics and potential strategies for overcoming these challenges.
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Affiliation(s)
- S Karthik
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
| | - Sahithya Mohan
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
| | - Induja Magesh
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
| | - Ashok Bharathy
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
| | - Rushil Kolipaka
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
| | - Srinidhi Ganesamoorthi
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
| | - K Sathiya
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
| | - Abinaya Shanmugavadivu
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
| | - Raghav Gurunathan
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
| | - N Selvamurugan
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India.
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Serpelloni S, Williams ME, Caserta S, Sharma S, Rahimi M, Taraballi F. Electrospun Chitosan-Based Nanofibrous Coating for the Local and Sustained Release of Vancomycin. ACS OMEGA 2024; 9:11701-11717. [PMID: 38496925 PMCID: PMC10938330 DOI: 10.1021/acsomega.3c08113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 02/07/2024] [Accepted: 02/13/2024] [Indexed: 03/19/2024]
Abstract
As the population ages, the number of vascular surgery procedures performed increases. Older adults often have multiple comorbidities, such as diabetes and hypertension, that increase the risk of complications from vascular surgery including vascular graft infection (VGI). VGI is a serious complication with significant morbidity, mortality, and healthcare costs. Here, we aimed to develop a nanofibrous chitosan-based coating for vascular grafts loaded with different concentrations of the vancomycin antibiotic vancomycin (VAN). Blending chitosan with poly(vinyl alcohol) or poly(ethylene oxide) copolymers improved solubility and ease of spinning. Thermal gravimetric analysis and Fourier transform infrared spectroscopy confirmed the presence of VAN in the nanofibrous membranes. Kinetics of VAN release from the nanofibrous mats were evaluated using high-performance liquid chromatography, showing a burst followed by sustained release over 24 h. To achieve longer sustained release, a poly(lactic-co-glycolic acid) coating was applied, resulting in extended release of up to 7 days. Biocompatibility assessment using human umbilical vein endothelial cells demonstrated successful attachment and viability of the nanofiber patches. Our study provides insights into the development of a drug delivery system for vascular grafts aimed at preventing infection during implantation, highlighting the potential of electrospinning as a promising technique in the field of vascular surgery.
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Affiliation(s)
- Stefano Serpelloni
- Center
for Musculoskeletal Regeneration, Houston
Methodist Academic Institute, Houston, Texas 77030-2707, United States
- Department
of Electronics, Information and Bioengineering (DEIB), Politecnico di Milano, Milan 20133, Italy
- Department
of Orthopedics and Sport Medicine, Houston
Methodist Hospital, Houston, Texas 77030-2707, United States
| | - Michael Ellis Williams
- Center
for Musculoskeletal Regeneration, Houston
Methodist Academic Institute, Houston, Texas 77030-2707, United States
- Reproductive
Biology and Gynaecological Oncology Group, Swansea University Medical School, Singleton Park, Swansea SA2 8QA, U.K.
| | - Sergio Caserta
- Department
of Chemical Materials and Industrial Production Engineering, University of Naples Federico II, Naples 80138, Italy
| | - Shashank Sharma
- Department
of Cardiovascular Surgery, Houston Methodist
Hospital, Houston, Texas 77030-2707, United States
| | - Maham Rahimi
- Department
of Cardiovascular Surgery, Houston Methodist
Hospital, Houston, Texas 77030-2707, United States
| | - Francesca Taraballi
- Center
for Musculoskeletal Regeneration, Houston
Methodist Academic Institute, Houston, Texas 77030-2707, United States
- Department
of Orthopedics and Sport Medicine, Houston
Methodist Hospital, Houston, Texas 77030-2707, United States
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Piskláková L, Skuhrovcová K, Bártová T, Seidelmannová J, Vondrovic Š, Velebný V. Trends in the Incorporation of Antiseptics into Natural Polymer-Based Nanofibrous Mats. Polymers (Basel) 2024; 16:664. [PMID: 38475347 DOI: 10.3390/polym16050664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 02/24/2024] [Accepted: 02/27/2024] [Indexed: 03/14/2024] Open
Abstract
Nanofibrous materials represent a very promising form of advanced carrier systems that can be used industrially, especially in regenerative medicine as highly functional bandages, or advanced wound dressings. By incorporation of antimicrobial additives directly into the structure of the nanofiber carrier, the functionality of the layer is upgraded, depending on the final requirement-bactericidal, bacteriostatic, antiseptic, or a generally antimicrobial effect. Such highly functional nanofibrous layers can be prepared mostly by electrospinning technology from both synthetic and natural polymers. The presence of a natural polymer in the composition is very advantageous. Especially in medical applications where, due to the presence of the material close to the human body, the healing process is more efficient and without the occurrence of an unwanted inflammatory response. However, converting natural polymers into nanofibrous form, with a homogeneously distributed and stable additive, is a great challenge. Thus, a combination of natural and synthetic materials is often used. This review clearly summarizes the issue of the incorporation and effectiveness of different types of antimicrobial substances, such as nanoparticles, antibiotics, common antiseptics, or substances of natural origin, into electrospun nanofibrous layers made of mostly natural polymer materials. A section describing the problematic aspects of antimicrobial polymers is also included.
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Affiliation(s)
- Lenka Piskláková
- Contipro a.s., Dolní Dobrouč 401, 561 02 Dolní Dobrouč, Czech Republic
- Nanotechnology Centre, Centre for Energy and Environmental Technologies, VŠB-Technical University of Ostrava, 17. Listopadu 2172/15, 708 00 Ostrava, Czech Republic
| | - Kristýna Skuhrovcová
- Contipro a.s., Dolní Dobrouč 401, 561 02 Dolní Dobrouč, Czech Republic
- Centre of Polymer Systems, Tomas Bata University in Zlín, Třída Tomáše Bati 5678, 760 01 Zlín, Czech Republic
| | - Tereza Bártová
- Contipro a.s., Dolní Dobrouč 401, 561 02 Dolní Dobrouč, Czech Republic
| | | | - Štěpán Vondrovic
- Contipro a.s., Dolní Dobrouč 401, 561 02 Dolní Dobrouč, Czech Republic
| | - Vladimír Velebný
- Contipro a.s., Dolní Dobrouč 401, 561 02 Dolní Dobrouč, Czech Republic
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de Freitas CF, Souza PR, Jacinto GS, Braga TL, Ricken YS, Souza GK, Caetano W, Radovanovic E, Arns CW, Rai M, Muniz EC. Silver Nanoparticles In Situ Synthesized and Incorporated in Uniaxial and Core-Shell Electrospun Nanofibers to Inhibit Coronavirus. Pharmaceutics 2024; 16:268. [PMID: 38399322 PMCID: PMC10893522 DOI: 10.3390/pharmaceutics16020268] [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: 12/28/2023] [Revised: 01/28/2024] [Accepted: 02/03/2024] [Indexed: 02/25/2024] Open
Abstract
In the present study, we sought to develop materials applicable to personal and collective protection equipment to mitigate SARS-CoV-2. For this purpose, AgNPs were synthesized and stabilized into electrospinning nanofiber matrices (NMs) consisting of poly(vinyl alcohol) (PVA), chitosan (CHT), and poly-ε-caprolactone (PCL). Uniaxial nanofibers of PVA and PVA/CHT were developed, as well as coaxial nanofibers of PCL[PVA/CHT], in which the PCL works as a shell and the blend as a core. A crucial aspect of the present study is the in situ synthesis of AgNPs using PVA as a reducing and stabilizing agent. This process presents few steps, no additional toxic reducing agents, and avoids the postloading of drugs or the posttreatment of NM use. In general, the in situ synthesized AgNPs had an average size of 11.6 nm, and the incorporated nanofibers had a diameter in the range of 300 nm, with high uniformity and low polydispersity. The NM's spectroscopic, thermal, and mechanical properties were appropriate for the intended application. Uniaxial (PVA/AgNPs and PVA/CHT/AgNPs) and coaxial (PCL[PVA/CHT/AgNPs]) NMs presented virucidal activity (log's reduction ≥ 5) against mouse hepatitis virus (MHV-3) genus Betacoronavirus strains. In addition to that, the NMs did not present cytotoxicity against fibroblast cells (L929 ATCC® CCL-1TM lineage).
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Affiliation(s)
- Camila F. de Freitas
- Department of Chemistry, Federal University of Santa Catarina, Florianópolis 88040-900, Brazil
- Department of Chemistry, State University of Maringá, Av. Colombo, 5790, Maringá 87020-900, Brazil
| | - Paulo R. Souza
- Department of Chemistry, State University of Maringá, Av. Colombo, 5790, Maringá 87020-900, Brazil
| | - Gislaine S. Jacinto
- Laboratory of Virology, Institute of Biology, University of Campinas–UNICAMP, Campinas 13083-970, Brazil
| | - Thais L. Braga
- Department of Chemistry, State University of Maringá, Av. Colombo, 5790, Maringá 87020-900, Brazil
| | - Yara S. Ricken
- Department of Chemistry, Federal University of Santa Catarina, Florianópolis 88040-900, Brazil
| | - Gredson K. Souza
- Chemistry Institute, State University of Campinas, UNICAMP, Rua Josué de Castro Cidade Universitária, Campinas 13083-970, Brazil
| | - Wilker Caetano
- Department of Chemistry, State University of Maringá, Av. Colombo, 5790, Maringá 87020-900, Brazil
| | - Eduardo Radovanovic
- Department of Chemistry, State University of Maringá, Av. Colombo, 5790, Maringá 87020-900, Brazil
| | - Clarice W. Arns
- Laboratory of Virology, Institute of Biology, University of Campinas–UNICAMP, Campinas 13083-970, Brazil
| | - Mahendra Rai
- Department of Microbiology, Nicolaus Copernicus University, 87-100 Torun, Poland
- Department of Chemistry, Federal University of Piauí, Campus Ministro Petronio Portella, Ininga, Teresina 64049-550, Brazil
| | - Edvani C. Muniz
- Department of Chemistry, Federal University of Santa Catarina, Florianópolis 88040-900, Brazil
- Department of Chemistry, Federal University of Piauí, Campus Ministro Petronio Portella, Ininga, Teresina 64049-550, Brazil
- Department of Chemistry, Federal University of Technology-Paraná, Estrada dos Pioneiros, 3131, Londrina 86036-370, Brazil
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Liu T, Liu S, Shi Y, Zhang Z, Ding S, Hou K, Zhang W, Meng X, Li F. Electrospun nanofiber membranes for rapid liver hemostasis via N-alkylated chitosan doped chitosan/PEO. Int J Biol Macromol 2024; 258:128948. [PMID: 38143056 DOI: 10.1016/j.ijbiomac.2023.128948] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 12/11/2023] [Accepted: 12/19/2023] [Indexed: 12/26/2023]
Abstract
The ideal hemostatic agents should be able to stop bleeding quickly and avoid secondary bleeding caused by adhesion with blood clots during dressing change. Herein, a hydrophobic electrospun nanofiber membrane was prepared for achieving hemostasis, rationally targeting both attributes, via doping N-alkylated chitosan (N-CS) grafted with octadecyl into chitosan/polyethylene oxide (PEO). In vitro and in vivo coagulation tests showed that CPNs doped with small amounts of N-CS (CPN31) could significantly shorten hemostasis time and promote the formation of more stable and stronger blood clots. In particular, the whole blood clotting time of CPN31 (58.8 ± 2.2 s) was significantly lower than that of chitosan/PEO (CPN0) nanofiber membrane (67 ± 3.5 s) and the medical sterile gauze (86.7 ± 0.6 s). Furthermore, due to the hemophobic nature of CPNs, blood wetting of the dressing was severely limited and blood can coagulated at the site of liver injury in rats, thus reducing blood loss and allowing rapid removal of the dressing without triggering secondary hemorrhage. The CPN31 exhibited excellent hemostasis properties, easy to remove, blood compatibility, biocompatibility and promoting fibroblast proliferation properties. This hydrophobic CPNs is a promising biological adhesive for hemorrhage control.
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Affiliation(s)
- Tao Liu
- Medical Support Technology Research Department, Academy of Military Sciences, People's Liberation Army, Tianjin 300161, China; Key Laboratory of Industrial Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Shuhan Liu
- Key Laboratory of Industrial Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Yihan Shi
- Medical Support Technology Research Department, Academy of Military Sciences, People's Liberation Army, Tianjin 300161, China
| | - Zhuoran Zhang
- General Hospital of Xinjiang Military Command, Xinjiang 830002, China
| | - Sheng Ding
- Medical Support Technology Research Department, Academy of Military Sciences, People's Liberation Army, Tianjin 300161, China
| | - Kexin Hou
- Medical Support Technology Research Department, Academy of Military Sciences, People's Liberation Army, Tianjin 300161, China
| | - Wen Zhang
- Shandong Academy of Pharmaceutical Sciences, Shandong Engineering Research Center of Novel Sustained and Controlled Release Formulations and Targeted Drug Delivery Systems, Jinan 250101, Shandong Province, China
| | - Xin Meng
- Key Laboratory of Industrial Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Fan Li
- Medical Support Technology Research Department, Academy of Military Sciences, People's Liberation Army, Tianjin 300161, China.
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Sarwar T, Raza ZA, Nazeer MA, Khan A. Fabrication of gelatin-incorporated nanoporous chitosan-based membranes for potential water desalination applications. Int J Biol Macromol 2023; 253:126588. [PMID: 37659503 DOI: 10.1016/j.ijbiomac.2023.126588] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 08/21/2023] [Accepted: 08/27/2023] [Indexed: 09/04/2023]
Abstract
Membrane technology has extensively been used in diverse phenomena such as separation, purification and controlled transportation. Herein, gelatin-incorporated porous chitosan membranes have been prepared using the sol-gel approach for potential water desalination applications. The porogens of poly(ethylene glycol) and Triton X-100 were employed for the mentioned purpose. The prepared porous membranes have been characterized for surface chemical, structural, thermal, mechanical and functional attributes using appropriate analytical approaches. Electron microscopy expressed porous surface morphologies of the resultant films with an average pore size of 14.5 nm. The infrared analysis demonstrated a successful crosslinking of the precursors in the resulting membranes via maleic anhydride. Differential scanning calorimetry analysis disclosed acceptable thermal stability of the test membranes, workable above ambient temperatures. The membrane expressed a water contact of 68.59°, which indicated moderate hydrophilicity, thus allowing controlled transport of the aqueous media. The resultant gelatin/chitosan porous membrane exhibited a porosity of 98 % against kerosene oil. In contrast, the flowability of 7.14 (ethanol), 5.00 (distilled water) and 0.53 (ethylene glycol) mL/min has been recorded against the mentioned liquids. The membrane efficiently purified the local canal water to permissible limits. Such membranes have been qualified for potential applications in water purification systems.
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Affiliation(s)
- Tanzeel Sarwar
- Department of Applied Sciences, National Textile University, Faisalabad 37610, Pakistan
| | - Zulfiqar Ali Raza
- Department of Applied Sciences, National Textile University, Faisalabad 37610, Pakistan.
| | | | - Amina Khan
- Department of Applied Sciences, National Textile University, Faisalabad 37610, Pakistan
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Ailincai D, Cibotaru S, Anisiei A, Coman CG, Pasca AS, Rosca I, Sandu AI, Mititelu-Tartau L, Marin L. Mesoporous chitosan nanofibers loaded with norfloxacin and coated with phenylboronic acid perform as bioabsorbable active dressings to accelerate the healing of burn wounds. Carbohydr Polym 2023; 318:121135. [PMID: 37479445 DOI: 10.1016/j.carbpol.2023.121135] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 06/09/2023] [Accepted: 06/19/2023] [Indexed: 07/23/2023]
Abstract
The paper reports new chitosan-based nanofibers, designed to address the healing of burn wounds. To this aim, mesoporous chitosan fiber mats were prepared by electrospinning using poly(ethylene oxide) as sacrificial additive, followed by loading with norfloxacin and coating with an antifungal agent via dynamic imine bonds. Dynamic vapor sorption experiment proved intra-fiber mesopores around 2.7 nm, and UV-vis, FTIR, and NMR spectroscopy confirmed the norfloxacin embedding and the imination reaction. SEM, AFM and POM techniques displayed semicrystalline nanofibers with average diameter around 170 nm entangled into a non-woven mat. Their mesoporous nature favored a rapid adsorption of fluids up to 17 g/g, and a biodegradation rate fitting the wound healing rate, i.e. up to 30 % mass loss in media of pH characteristic to wound exudate and total degradation in that characteristic to normal dermis. The composite fibers released the NFX and 2FPBA in a controlled manner, and showed antimicrobial activity against gram positive, gram negative and fungal strains. They had no cytotoxic effect on normal human dermal fibroblasts, and showed biocompatibility on experimental rats. The investigation of wound healing ability on second/third-degree burn model in rats revealed wound closure and total restoration of the fully functional dermis and epidermis.
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Affiliation(s)
- Daniela Ailincai
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, Iasi, Romania
| | - Sandu Cibotaru
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, Iasi, Romania
| | - Alexandru Anisiei
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, Iasi, Romania
| | - Corneliu G Coman
- "Grigore T. Popa" University of Medicine and Pharmacy, Iasi, Romania
| | - Aurelian Sorin Pasca
- "Ion Ionescu de la Brad" University, Laboratory of Antimicrobial Chemotherapy, Iasi, Romania
| | - Irina Rosca
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, Iasi, Romania
| | - Andreea-Isabela Sandu
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, Iasi, Romania
| | | | - Luminita Marin
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, Iasi, Romania.
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9
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Abtahi S, Chen X, Shahabi S, Nasiri N. Resorbable Membranes for Guided Bone Regeneration: Critical Features, Potentials, and Limitations. ACS MATERIALS AU 2023; 3:394-417. [PMID: 38089090 PMCID: PMC10510521 DOI: 10.1021/acsmaterialsau.3c00013] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 06/01/2023] [Accepted: 06/02/2023] [Indexed: 03/22/2024]
Abstract
Lack of horizontal and vertical bone at the site of an implant can lead to significant clinical problems that need to be addressed before implant treatment can take place. Guided bone regeneration (GBR) is a commonly used surgical procedure that employs a barrier membrane to encourage the growth of new bone tissue in areas where bone has been lost due to injury or disease. It is a promising approach to achieve desired repair in bone tissue and is widely accepted and used in approximately 40% of patients with bone defects. In this Review, we provide a comprehensive examination of recent advances in resorbable membranes for GBR including natural materials such as chitosan, collagen, silk fibroin, along with synthetic materials such as polyglycolic acid (PGA), polycaprolactone (PCL), polyethylene glycol (PEG), and their copolymers. In addition, the properties of these materials including foreign body reaction, mechanical stability, antibacterial property, and growth factor delivery performance will be compared and discussed. Finally, future directions for resorbable membrane development and potential clinical applications will be highlighted.
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Affiliation(s)
- Sara Abtahi
- NanoTech
Laboratory, School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney 2109, Australia
- Department
of Dental Biomaterials, School of Dentistry, Tehran University of Medical Sciences, Tehran 1416753955, Iran
| | - Xiaohu Chen
- NanoTech
Laboratory, School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney 2109, Australia
| | - Sima Shahabi
- Department
of Dental Biomaterials, School of Dentistry, Tehran University of Medical Sciences, Tehran 1416753955, Iran
| | - Noushin Nasiri
- NanoTech
Laboratory, School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney 2109, Australia
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Andreica BI, Anisiei A, Rosca I, Sandu AI, Pasca AS, Tartau LM, Marin L. Quaternized chitosan/chitosan nanofibrous mats: An approach toward bioactive materials for tissue engineering and regenerative medicine. Carbohydr Polym 2023; 302:120431. [PMID: 36604092 DOI: 10.1016/j.carbpol.2022.120431] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 11/30/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022]
Abstract
Chitosan based nanofibers are emerging biomaterials with a plethora of applications, especially in medicine and healthcare. Herein, binary quaternized chitosan/chitosan fibers are reported for the first time. Their preparation strategy consisted in the electrospinning of ternary chitosan/quaternized chitosan/poly(ethylene oxide) solutions followed by the selective removal of poly(ethylene oxide). Their morphology and performances were systematically investigated and discussed in detail. It was found that the fibers had reversible water vapor adsorption/desorption and showed swelling degrees similar to commercial wound dressings. They presented good mechanical properties and the content of quaternized chitosan modulated their bioadhesion, mucoadhesion and biodegradation rate and conferred them strong antimicrobial activity. Tests on normal human fibroblasts confirmed their safely use in contact with tissues and the biocompatibility investigation on rats showed no harmful effect when subcutaneous implanted. All these proved the binary quaternized chitosan/chitosan fibers as bioactive materials suitable for tissue regeneration, wound healing and drug delivery systems.
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Affiliation(s)
| | - Alexandru Anisiei
- "Petru Poni" Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley, Iasi, Romania
| | - Irina Rosca
- "Petru Poni" Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley, Iasi, Romania
| | - Andreea-Isabela Sandu
- "Petru Poni" Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley, Iasi, Romania
| | - Aurelian Sorin Pasca
- "Ion Ionescu de la Brad" University, Laboratory of Antimicrobial Chemotherapy, Iasi, Romania
| | | | - Luminita Marin
- "Petru Poni" Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley, Iasi, Romania.
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11
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Guo Y, Wang M, Liu Q, Liu G, Wang S, Li J. Recent advances in the medical applications of hemostatic materials. Theranostics 2023; 13:161-196. [PMID: 36593953 PMCID: PMC9800728 DOI: 10.7150/thno.79639] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 11/14/2022] [Indexed: 12/03/2022] Open
Abstract
Bleeding caused by trauma or surgery is a serious health problem, and uncontrollable bleeding can result in death. Therefore, developing safe, effective, and convenient hemostatic materials is important. Active hemostatic agents currently used to investigate the field of hemostasis are divided into four broad categories: natural polymers, synthetic polymers, inorganic materials, and metal-containing materials. Hemostatic materials are prepared in various forms for wound care applications based on the active ingredients used. These materials include nanofibers, gels, sponges, and nanoparticles. Hemostatic materials find their applications in the field of wound care, and they are also used for hemostasis during malignant tumor surgery. Prompt and effective hemostasis can reduce the possibility of the spread of tumor cells with blood. This review discusses the outcomes of current research conducted in the field and the problems persisting in the field of developing hemostatic materials. The review also presents a platform for the further development of hemostatic materials. Bleeding caused by trauma or surgery is a serious health problem, and uncontrollable bleeding can result in death. Therefore, developing safe, effective, and convenient hemostatic materials is important. Active hemostatic agents currently used to investigate the field of hemostasis are divided into four broad categories: natural polymers, synthetic polymers, inorganic materials, and metal-containing materials. Hemostatic materials are prepared in various forms for wound care applications based on the active ingredients used. These materials include nanofibers, gels, sponges, and nanoparticles. Hemostatic materials find their applications in the field of wound care, and they are also used for hemostasis during malignant tumor surgery. Prompt and effective hemostasis can reduce the possibility of the spread of tumor cells with blood. This review discusses the outcomes of current research conducted in the field and the problems persisting in the field of developing hemostatic materials. The review also presents a platform for the further development of hemostatic materials.
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Affiliation(s)
- Yu Guo
- Department of the General Surgery, Jilin University Second Hospital, Changchun, China
| | - Min Wang
- Department of the General Surgery, Jilin University Second Hospital, Changchun, China
| | - Qi Liu
- Department of the General Surgery, Jilin University Second Hospital, Changchun, China
| | - Guoliang Liu
- Department of Operating Theater and Anesthesiology, Jilin University Second Hospital, Changchun, China
| | - Shuang Wang
- Department of the Dermatology, Jilin University Second Hospital, Changchun, China.,✉ Corresponding authors: Shuang Wang, E-mail: , Department of the Dermatology, Jilin University Second Hospital, Changchun, China. Jiannan Li, E-mail: , Department of the General Surgery, Jilin University Second Hospital, Changchun, China
| | - Jiannan Li
- Department of the General Surgery, Jilin University Second Hospital, Changchun, China.,✉ Corresponding authors: Shuang Wang, E-mail: , Department of the Dermatology, Jilin University Second Hospital, Changchun, China. Jiannan Li, E-mail: , Department of the General Surgery, Jilin University Second Hospital, Changchun, China
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12
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Li Y, Dai Y, Tao Q, Xu L. Synthesis and characterization of amino acid-functionalized chitosan/poly(vinyl alcohol) for effective adsorption of uranium. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08587-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Polycaprolactone/Chitosan Composite Nanofiber Membrane as a Preferred Scaffold for the Culture of Mesothelial Cells and the Repair of Damaged Mesothelium. Int J Mol Sci 2022; 23:ijms23179517. [PMID: 36076916 PMCID: PMC9455682 DOI: 10.3390/ijms23179517] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 08/16/2022] [Accepted: 08/19/2022] [Indexed: 11/26/2022] Open
Abstract
Mesothelial cells are specific epithelial cells lining the serosal cavity and internal organs. Nonetheless, few studies have explored the possibility to culture mesothelial cells in a nanostructure scaffold for tissue engineering applications. Therefore, this study aims to fabricate nanofibers from a polycaprolactone (PCL) and PCL/chitosan (CS) blend by electrospinning, and to elucidate the effect of CS on the cellular response of mesothelial cells. The results demonstrate that a PCL and PCL/CS nanofiber membrane scaffold could be prepared with a comparable fiber diameter (~300 nm) and porosity for cell culture. Blending CS with PCL influenced the mechanical properties of the scaffold due to interference of PCL crystallinity in the nanofibers. However, CS substantially improves scaffold hydrophilicity and results in a ~6-times-higher cell attachment rate in PCL/CS. The mesothelial cells maintain high viability in both nanofiber membranes, but PCL/CS provides better maintenance of cobblestone-like mesothelial morphology. From gene expression analysis and immunofluorescence staining, the incorporation of CS also results in the upregulated expression of mesothelial marker genes and the enhanced production of key mesothelial maker proteins, endorsing PCL/CS to better maintain the mesothelial phenotype. The PCL/CS scaffold was therefore chosen for the in vivo studies, which involved transplanting a cell/scaffold construct containing allograft mesothelial cells for mesothelium reconstruction in rats. In the absence of mesothelial cells, the mesothelium wound covered with PCL/CS showed an inflammatory response. In contrast, a mesothelium layer similar to native mesothelium tissue could be obtained by implanting the cell/scaffold construct, based on hematoxylin and eosin (H&E) and immunohistochemical staining.
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Impact of Surface Area on Sensitivity in Autonomously Reporting Sensing Hydrogel Nanomaterials for the Detection of Bacterial Enzymes. CHEMOSENSORS 2022. [DOI: 10.3390/chemosensors10080299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The rapid and selective detection of bacterial contaminations and bacterial infections in a non-laboratory setting using advanced sensing materials holds the promise to enable robust point-of-care tests and rapid diagnostics for applications in the medical field as well as food safety. Among the various possible analytes, bacterial enzymes have been targeted successfully in various sensing formats. In this current work, we focus on the systematic investigation of the role of surface area on the sensitivity in micro- and nanostructured autonomously reporting sensing hydrogel materials for the detection of bacterial enzymes. The colorimetric sensing materials for the detection of β-glucuronidase (ß-GUS) from Escherichia coli (E. coli) were fabricated by template replication of crosslinked pullulan acetoacetate (PUAA) and by electrospinning chitosan/polyethylene oxide nanofibers (CS/PEO NFs), both equipped with the chromogenic substrate 5-bromo-4-chloro-3-indolyl-β-D-glucuronide. The investigation of the dependence of the initial reaction rates on surface area unveiled a linear relationship of rate and thereby time to observe a signal for a given concentration of bacterial enzyme. This knowledge was exploited in nanoscale sensing materials made of CS/PEO NFs with diameters of 295 ± 100 nm. Compared to bulk hydrogel slabs, the rate of hydrolysis was significantly enhanced in NFs when exposed to bacteria suspension cultures and thus ensuring a rapid detection of living E. coli that produces the enzyme β-GUS. The findings afford generalized design principles for the improvement of known and novel sensing materials towards rapid detection of bacteria by nanostructuring in medical and food related settings.
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Tien ND, Geng T, Heyward CA, Reseland JE, Lyngstadaas SP, Blaker JJ, Haugen HJ. Solution blow spinning of highly deacetylated chitosan nanofiber scaffolds for dermal wound healing. BIOMATERIALS ADVANCES 2022; 137:212871. [PMID: 35929246 DOI: 10.1016/j.bioadv.2022.212871] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 05/12/2022] [Accepted: 05/15/2022] [Indexed: 06/15/2023]
Abstract
Biocompatible fibrous scaffolds based on highly deacetylated chitosan were fabricated using high-throughput solution blow spinning. Scanning electron microscopy analysis revealed that the chitosan nanofiber scaffolds had ultrafine and continuous fibers (300-1200 nm) with highly interconnected porous structures (30-75% porosity), mimicking some aspects of the native extracellular matrix in skin tissue. Post-treatment of as-spun nanofibers with aqueous potassium carbonate solution resulted in a fibrous scaffold with a high chitosan content that retained its fibrous structural integrity for cell culture. Analysis of the mechanical properties of the chitosan nanofiber scaffolds in both dry and wet conditions showed that their strength and durability were sufficient for wound dressing applications. Significantly, the wet scaffold underwent remarkable elastic deformation during stretch such that the elongation at break dramatically increased to up to 44% of its original length, showing wavy fiber morphology near the break site. The culture of normal human dermal fibroblast cells onto scaffolds for 1-14 days demonstrated that the scaffolds were highly compatible and a suitable platform for cell adhesion, viability, and proliferation. Secretion profiles of wound healing-related proteins to the cell culture medium demonstrated that chitosan fibers were a promising scaffold for wound healing applications. Overall, the dense fibrous network with high porosity of the chitosan nanofiber scaffold and their mechanical properties indicate that they could be used to design and fabricate new materials that mimic the epidermis layer of natural skin.
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Affiliation(s)
- Nguyen D Tien
- Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, 0317 Oslo, Norway
| | - Tianxiang Geng
- Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, 0317 Oslo, Norway
| | - Catherine A Heyward
- Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, 0317 Oslo, Norway
| | - Janne E Reseland
- Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, 0317 Oslo, Norway
| | - S Petter Lyngstadaas
- Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, 0317 Oslo, Norway
| | - Jonny J Blaker
- Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, 0317 Oslo, Norway; Department of Materials and Henry Royce Institute, The University of Manchester, Manchester M13 9PL, United Kingdom.
| | - Håvard J Haugen
- Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, 0317 Oslo, Norway.
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Advances in Electrospun Hybrid Nanofibers for Biomedical Applications. NANOMATERIALS 2022; 12:nano12111829. [PMID: 35683685 PMCID: PMC9181850 DOI: 10.3390/nano12111829] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 05/18/2022] [Accepted: 05/24/2022] [Indexed: 02/04/2023]
Abstract
Electrospun hybrid nanofibers, based on functional agents immobilized in polymeric matrix, possess a unique combination of collective properties. These are beneficial for a wide range of applications, which include theranostics, filtration, catalysis, and tissue engineering, among others. The combination of functional agents in a nanofiber matrix offer accessibility to multifunctional nanocompartments with significantly improved mechanical, electrical, and chemical properties, along with better biocompatibility and biodegradability. This review summarizes recent work performed for the fabrication, characterization, and optimization of different hybrid nanofibers containing varieties of functional agents, such as laser ablated inorganic nanoparticles (NPs), which include, for instance, gold nanoparticles (Au NPs) and titanium nitride nanoparticles (TiNPs), perovskites, drugs, growth factors, and smart, inorganic polymers. Biocompatible and biodegradable polymers such as chitosan, cellulose, and polycaprolactone are very promising macromolecules as a nanofiber matrix for immobilizing such functional agents. The assimilation of such polymeric matrices with functional agents that possess wide varieties of characteristics require a modified approach towards electrospinning techniques such as coelectrospinning and template spinning. Additional focus within this review is devoted to the state of the art for the implementations of these approaches as viable options for the achievement of multifunctional hybrid nanofibers. Finally, recent advances and challenges, in particular, mass fabrication and prospects of hybrid nanofibers for tissue engineering and biomedical applications have been summarized.
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Korniienko V, Husak Y, Radwan-Pragłowska J, Holubnycha V, Samokhin Y, Yanovska A, Varava J, Diedkova K, Janus Ł, Pogorielov M. Impact of Electrospinning Parameters and Post-Treatment Method on Antibacterial and Antibiofilm Activity of Chitosan Nanofibers. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27103343. [PMID: 35630820 PMCID: PMC9142982 DOI: 10.3390/molecules27103343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 05/11/2022] [Accepted: 05/12/2022] [Indexed: 12/13/2022]
Abstract
Chitosan, a natural biopolymer, is an ideal candidate to prepare biomaterials capable of preventing microbial infections due to its antibacterial properties. Electrospinning is a versatile method ideally suited to process biopolymers with minimal impact on their physicochemical properties. However, fabrication parameters and post-processing routine can affect biological activity and, therefore, must be well adjusted. In this study, nanofibrous membranes were prepared using trifluoroacetic acid and dichloromethane and evaluated for physiochemical and antimicrobial properties. The use of such biomaterials as potential antibacterial agents was extensively studied in vitro using Staphylococcus aureus and Escherichia coli as test organisms. The antibacterial assay showed inhibition of bacterial growth and eradication of the planktonic cells of both E. coli and S. aureus in the liquid medium for up to 6 hrs. The quantitative assay showed a significant reduction in bacteria cell viability by nanofibers depending on the method of fabrication. The antibacterial properties of these biomaterials can be attributed to the structural modifications provided by co-solvent formulation and application of post-treatment procedure. Consequently, the proposed antimicrobial surface modification method is a promising technique to prepare biomaterials designed to induce antimicrobial resistance via antiadhesive capability and the biocide-releasing mechanism.
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Affiliation(s)
- Viktoriia Korniienko
- Biomedical Research Centre, Sumy State University, 2, Rymsky-Korsakov Str., 40007 Sumy, Ukraine; (Y.H.); (V.H.); (Y.S.); (A.Y.); (J.V.); (K.D.)
- Correspondence: (V.K.); (J.R.-P.); (M.P.); Tel.: +86-380504071171 (V.K.); +86-12-628-27-76 (J.R.-P.); +86-37122460705 (M.P.)
| | - Yevheniia Husak
- Biomedical Research Centre, Sumy State University, 2, Rymsky-Korsakov Str., 40007 Sumy, Ukraine; (Y.H.); (V.H.); (Y.S.); (A.Y.); (J.V.); (K.D.)
- Faculty of Chemistry, Silesian University of Technology, 44-100 Gliwice, Poland
| | - Julia Radwan-Pragłowska
- Department of Biotechnology and Physical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24 Street, 31-155 Cracow, Poland;
- Correspondence: (V.K.); (J.R.-P.); (M.P.); Tel.: +86-380504071171 (V.K.); +86-12-628-27-76 (J.R.-P.); +86-37122460705 (M.P.)
| | - Viktoriia Holubnycha
- Biomedical Research Centre, Sumy State University, 2, Rymsky-Korsakov Str., 40007 Sumy, Ukraine; (Y.H.); (V.H.); (Y.S.); (A.Y.); (J.V.); (K.D.)
| | - Yevhen Samokhin
- Biomedical Research Centre, Sumy State University, 2, Rymsky-Korsakov Str., 40007 Sumy, Ukraine; (Y.H.); (V.H.); (Y.S.); (A.Y.); (J.V.); (K.D.)
| | - Anna Yanovska
- Biomedical Research Centre, Sumy State University, 2, Rymsky-Korsakov Str., 40007 Sumy, Ukraine; (Y.H.); (V.H.); (Y.S.); (A.Y.); (J.V.); (K.D.)
| | - Julia Varava
- Biomedical Research Centre, Sumy State University, 2, Rymsky-Korsakov Str., 40007 Sumy, Ukraine; (Y.H.); (V.H.); (Y.S.); (A.Y.); (J.V.); (K.D.)
| | - Kateryna Diedkova
- Biomedical Research Centre, Sumy State University, 2, Rymsky-Korsakov Str., 40007 Sumy, Ukraine; (Y.H.); (V.H.); (Y.S.); (A.Y.); (J.V.); (K.D.)
| | - Łukasz Janus
- Department of Biotechnology and Physical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24 Street, 31-155 Cracow, Poland;
| | - Maksym Pogorielov
- Biomedical Research Centre, Sumy State University, 2, Rymsky-Korsakov Str., 40007 Sumy, Ukraine; (Y.H.); (V.H.); (Y.S.); (A.Y.); (J.V.); (K.D.)
- Institute of Atomic Physics and Spectroscopy, University of Latvia, Jelgavas iela 3, LV-1004 Riga, Latvia
- Correspondence: (V.K.); (J.R.-P.); (M.P.); Tel.: +86-380504071171 (V.K.); +86-12-628-27-76 (J.R.-P.); +86-37122460705 (M.P.)
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Iliou K, Kikionis S, Ioannou E, Roussis V. Marine Biopolymers as Bioactive Functional Ingredients of Electrospun Nanofibrous Scaffolds for Biomedical Applications. Mar Drugs 2022; 20:md20050314. [PMID: 35621965 PMCID: PMC9143254 DOI: 10.3390/md20050314] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 04/30/2022] [Accepted: 05/01/2022] [Indexed: 02/01/2023] Open
Abstract
Marine biopolymers, abundantly present in seaweeds and marine animals, feature diverse structures and functionalities, and possess a wide range of beneficial biological activities. Characterized by high biocompatibility and biodegradability, as well as unique physicochemical properties, marine biopolymers are attracting a constantly increasing interest for the development of advanced systems for applications in the biomedical field. The development of electrospinning offers an innovative technological platform for the production of nonwoven nanofibrous scaffolds with increased surface area, high encapsulation efficacy, intrinsic interconnectivity, and structural analogy to the natural extracellular matrix. Marine biopolymer-based electrospun nanofibrous scaffolds with multifunctional characteristics and tunable mechanical properties now attract significant attention for biomedical applications, such as tissue engineering, drug delivery, and wound healing. The present review, covering the literature up to the end of 2021, highlights the advancements in the development of marine biopolymer-based electrospun nanofibers for their utilization as cell proliferation scaffolds, bioadhesives, release modifiers, and wound dressings.
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Szymańska E, Wojasiński M, Czarnomysy R, Dębowska R, Łopianiak I, Adasiewicz K, Ciach T, Winnicka K. Chitosan-Enriched Solution Blow Spun Poly(Ethylene Oxide) Nanofibers with Poly(Dimethylsiloxane) Hydrophobic Outer Layer for Skin Healing and Regeneration. Int J Mol Sci 2022; 23:ijms23095135. [PMID: 35563526 PMCID: PMC9105710 DOI: 10.3390/ijms23095135] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/29/2022] [Accepted: 04/29/2022] [Indexed: 12/10/2022] Open
Abstract
Chitosan (CS)/poly(ethylene oxide) (PEO)-based nanofiber mats have attracted particular attention as advanced materials for medical and pharmaceutical applications. In the scope of present studies, solution blow spinning was applied to produce nanofibers from PEO and CS and physicochemical and biopharmaceutical studies were carried out to investigate their potential as wound nanomaterial for skin healing and regeneration. Additional coating with hydrophobic poly(dimethylsiloxane) was applied to favor removal of nanofibers from the wound surface. Unmodified nanofibers displayed highly porous structure with the presence of uniform, randomly aligned nanofibers, in contrast to coated materials in which almost all the free spaces were filled in with poly(dimethylsiloxane). Infrared spectroscopy indicated that solution blow technique did not influence the molecular nature of native polymers. Obtained nanofibers exhibited sufficient wound exudate absorbency, which appears beneficial to moisturize the wound bed during the healing process. Formulations displayed greater tensile strength as compared to commercial hydrofiber-like dressing materials comprised of carboxymethylcellulose sodium or calcium alginate, which points toward their protective function against mechanical stress. Coating with hydrophobic poly(dimethylsiloxane) (applied to favor nanofiber removal from the wound surface) impacted porosity and decreased both mechanical properties and adherence to excised human skin, though the obtained values were comparable to those attained for commercial hydrofiber-like materials. In vitro cytotoxicity and irritancy studies showed biocompatibility and no skin irritant response of nanofibers in contact with a reconstituted three-dimensional human skin model, while scratch assay using human fibroblast cell line HDFa revealed the valuable potential of CS/PEO nanofibers to promote cell migration at an early stage of injury.
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Affiliation(s)
- Emilia Szymańska
- Department of Pharmaceutical Technology, Medical University of Bialystok, Mickiewicza 2c, 15-222 Białystok, Poland;
- Correspondence: ; Tel.: +48-8574-856-16
| | - Michał Wojasiński
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, Poland; (M.W.); (I.Ł.); (T.C.)
| | - Robert Czarnomysy
- Department of Synthesis and Technology of Drugs, Medical University of Bialystok, Kilińskiego 1, 15-089 Bialystok, Poland;
| | - Renata Dębowska
- Dr Irena Eris Centre for Science and Research, Armii Krajowej 12, 05-500 Piaseczno, Poland;
| | - Iwona Łopianiak
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, Poland; (M.W.); (I.Ł.); (T.C.)
- Doctoral School No. 1, Warsaw University of Technology, Plac Politechniki 1, 00-661 Warsaw, Poland
| | - Kamil Adasiewicz
- Student Scientific Group, Department of Pharmaceutical Technology, Medical University of Bialystok, Mickiewicza 2c, 15-222 Białystok, Poland;
| | - Tomasz Ciach
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, Poland; (M.W.); (I.Ł.); (T.C.)
- Centre for Advanced Materials and Technologies (CEZAMAT), Warsaw University of Technology, Poleczki 19, 02-822 Warsaw, Poland
| | - Katarzyna Winnicka
- Department of Pharmaceutical Technology, Medical University of Bialystok, Mickiewicza 2c, 15-222 Białystok, Poland;
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Alimohammadi M, Fakhraei O, Moradi A, Kabiri M, Moradi A, Passandideh-Fard M, Tamayol A, Ebrahimzadeh MH, Mousavi Shaegh SA. Controlled release of azithromycin from polycaprolactone/chitosan nanofibrous membranes. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103246] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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21
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Valachová K, El Meligy MA, Šoltés L. Hyaluronic acid and chitosan-based electrospun wound dressings: Problems and solutions. Int J Biol Macromol 2022; 206:74-91. [PMID: 35218807 DOI: 10.1016/j.ijbiomac.2022.02.117] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 02/16/2022] [Accepted: 02/18/2022] [Indexed: 11/05/2022]
Abstract
To date, available review papers related to the electrospinning of biopolymers including polysaccharides for wound healing were focused on summarizing the process conditions for two candidates, namely chitosan and hyaluronic acid. However, most reviews lack the discussion of problems of hyaluronan and chitosan electrospun nanofibers for wound dressing applications. For this reason, it is required to update information by providing a comprehensive overview of all factors which may play a role in the electrospinning of hyaluronic acid and chitosan for applications of wound dressings. This review summarizes the fabricated chitosan and hyaluronic acid electrospun nanofibers as wound dressings in the last years, including methods of preparations of nanofibers and challenges for the electrospinning of both pure chitosan and hyaluronic acid and strategies how to overcome the existing difficulties. Moreover, in this review the biological roles and mechanisms of chitosan and hyaluronic acid in the wound healing process are explained including the advantages of nanofibers for ideal wound management using the common solvents, copolymers enhancing spinning process, and the most biologically active incorporated substances thereby providing drug delivery in wound healing.
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Affiliation(s)
- Katarína Valachová
- Centre of Experimental Medicine of Slovak Academy of Sciences, Dúbravská cesta 9, 84104 Bratislava, Slovakia.
| | - Mahmoud Atya El Meligy
- Department of Chemistry, Polymer Research Group, Faculty of Science, University of Tanta, Tanta 31527, Egypt
| | - Ladislav Šoltés
- Centre of Experimental Medicine of Slovak Academy of Sciences, Dúbravská cesta 9, 84104 Bratislava, Slovakia
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22
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Merchiers J, Reddy NK, Sharma V. Extensibility-Enriched Spinnability and Enhanced Sorption and Strength of Centrifugally Spun Polystyrene Fiber Mats. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02164] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jorgo Merchiers
- Institute for Materials research (IMO-IMOMEC), Hasselt University, B-3590 Diepenbeek, Belgium
- IMEC vzw-Division IMOMEC, Wetenschapspark 1, B-3590 Diepenbeek, Belgium
| | - Naveen K. Reddy
- Institute for Materials research (IMO-IMOMEC), Hasselt University, B-3590 Diepenbeek, Belgium
- IMEC vzw-Division IMOMEC, Wetenschapspark 1, B-3590 Diepenbeek, Belgium
| | - Vivek Sharma
- Department of Chemical Engineering, University of Illinois Chicago, Chicago, Illinois 60607, United States
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Anisiei A, Rosca I, Sandu AI, Bele A, Cheng X, Marin L. Imination of Microporous Chitosan Fibers-A Route to Biomaterials with "On Demand" Antimicrobial Activity and Biodegradation for Wound Dressings. Pharmaceutics 2022; 14:pharmaceutics14010117. [PMID: 35057012 PMCID: PMC8777909 DOI: 10.3390/pharmaceutics14010117] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/20/2021] [Accepted: 12/22/2021] [Indexed: 12/02/2022] Open
Abstract
Microporous chitosan nanofibers functionalized with different amounts of an antimicrobial agent via imine linkage were prepared by a three-step procedure including the electrospinning of a chitosan/PEO blend, PEO removal and acid condensation reaction in a heterogeneous system with 2-formylphenylboronic acid. The fibers’ characterization was undertaken keeping in mind their application to wound healing. Thus, by FTIR and 1H-NMR spectroscopy, it was confirmed the successful imination of the fibers and the conversion degree of the amine groups of chitosan into imine units. The fiber morphology in terms of fiber diameter, crystallinity, inter- and intra-fiber porosity and strength of intermolecular forces was investigated using scanning electron microscopy, polarized light microscopy, water vapor sorption and thermogravimetric analysis. The swelling ability was estimated in water and phosphate buffer by calculating the mass equilibrium swelling. The fiber biodegradation was explored in five media of different pH, corresponding to different stages of wound healing and the antimicrobial activity against the opportunistic pathogens inflicting wound infection was investigated according to standard tests. The biocompatibility and bioadhesivity were studied on normal human dermal fibroblast cells by direct contact procedure. The dynamic character of the imine linkage of the functionalized fibers was monitored by UV-vis spectroscopy. The results showed that the functionalization of the chitosan microporous nanofibers with antimicrobial agents via imine linkage is a great route towards bio-absorbable wound dressings with “on demand” antimicrobial properties and biodegradation rate matching the healing stages.
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Affiliation(s)
- Alexandru Anisiei
- “Petru Poni” Institute of Macromolecular Chemistry, Gr. Ghica Voda Alley, 41A, 700487 Iasi, Romania; (A.A.); (I.R.); (A.-I.S.); (A.B.)
| | - Irina Rosca
- “Petru Poni” Institute of Macromolecular Chemistry, Gr. Ghica Voda Alley, 41A, 700487 Iasi, Romania; (A.A.); (I.R.); (A.-I.S.); (A.B.)
| | - Andreea-Isabela Sandu
- “Petru Poni” Institute of Macromolecular Chemistry, Gr. Ghica Voda Alley, 41A, 700487 Iasi, Romania; (A.A.); (I.R.); (A.-I.S.); (A.B.)
| | - Adrian Bele
- “Petru Poni” Institute of Macromolecular Chemistry, Gr. Ghica Voda Alley, 41A, 700487 Iasi, Romania; (A.A.); (I.R.); (A.-I.S.); (A.B.)
| | - Xinjian Cheng
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430073, China;
| | - Luminita Marin
- “Petru Poni” Institute of Macromolecular Chemistry, Gr. Ghica Voda Alley, 41A, 700487 Iasi, Romania; (A.A.); (I.R.); (A.-I.S.); (A.B.)
- Correspondence:
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Koh KY, Chen Z, Zhang S, Chen JP. Cost-effective phosphorus removal from aqueous solution by a chitosan/lanthanum hydrogel bead: Material development, characterization of uptake process and investigation of mechanisms. CHEMOSPHERE 2022; 286:131458. [PMID: 34284222 DOI: 10.1016/j.chemosphere.2021.131458] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 06/30/2021] [Accepted: 07/05/2021] [Indexed: 06/13/2023]
Abstract
Excessive phosphorus is one of the main reasons leading to eutrophication that causes severe ecosystem imbalance and negative human health impacts. In this study, several chitosan (CS)/lanthanum (La) hydrogel beads were first synthesized and tested for phosphorus removal. The stable cross-linked CS/La hydrogel bead prepared with the optimized conditions of 10 wt% La/CS and 1.5 mL of 5% glutaraldehyde demonstrated exceptional performance in the removal. It removed phosphate effectively from an aqueous solution in the pH range from 2 to 7. The complete phosphate uptake was achieved at contact time of 6 h under the completely mixing batch condition. The experimental maximum adsorption capacity of 107.7 mg g-1 was observed at solution pH 4. The phosphate adsorption was well described by the Freundlich isotherm and the intraparticle surface diffusion model. Furthermore, the adsorbent was effectively regenerated and reused in a five-cycle adsorption-desorption operation. The removal of phosphate can be attributed to electrostatic attraction and ion exchange. Moreover, the bead was capable of removing heavy metals: copper, zinc and lead. This adsorbent may be served as a cost-effective material for the treatment of phosphorus-contaminated water so as to minimize the occurrence of eutrophication.
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Affiliation(s)
- Kok Yuen Koh
- Department of Civil and Environmental Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore, 119260, Singapore; NUS Environmental Research Institute, National University of Singapore, 5A Engineering Drive 1, #02-01, Singapore, 117411, Singapore.
| | - Zhihao Chen
- NUS Environmental Research Institute, National University of Singapore, 5A Engineering Drive 1, #02-01, Singapore, 117411, Singapore
| | - Sui Zhang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117576, Singapore
| | - J Paul Chen
- Department of Civil and Environmental Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore, 119260, Singapore; NUS Environmental Research Institute, National University of Singapore, 5A Engineering Drive 1, #02-01, Singapore, 117411, Singapore.
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Peranidze K, Safronova TV, Kildeeva NR. Fibrous Polymer-Based Composites Obtained by Electrospinning for Bone Tissue Engineering. Polymers (Basel) 2021; 14:96. [PMID: 35012119 PMCID: PMC8747636 DOI: 10.3390/polym14010096] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 12/18/2021] [Accepted: 12/23/2021] [Indexed: 02/07/2023] Open
Abstract
Currently, the significantly developing fields of tissue engineering related to the fabrication of polymer-based materials that possess microenvironments suitable to provide cell attachment and promote cell differentiation and proliferation involve various materials and approaches. Biomimicking approach in tissue engineering is aimed at the development of a highly biocompatible and bioactive material that would most accurately imitate the structural features of the native extracellular matrix consisting of specially arranged fibrous constructions. For this reason, the present research is devoted to the discussion of promising fibrous materials for bone tissue regeneration obtained by electrospinning techniques. In this brief review, we focus on the recently presented natural and synthetic polymers, as well as their combinations with each other and with bioactive inorganic incorporations in order to form composite electrospun scaffolds. The application of several electrospinning techniques in relation to a number of polymers is touched upon. Additionally, the efficiency of nanofibrous composite materials intended for use in bone tissue engineering is discussed based on biological activity and physiochemical characteristics.
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Affiliation(s)
- Kristina Peranidze
- Department of Materials Science, Lomonosov Moscow State University, Leninskie Gory 1, 119991 Moscow, Russia
| | - Tatiana V Safronova
- Department of Materials Science, Lomonosov Moscow State University, Leninskie Gory 1, 119991 Moscow, Russia
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1, 119991 Moscow, Russia
| | - Nataliya R Kildeeva
- Department of Chemistry and Technology of Polymer Materials and Nanocomposites, The Kosygin State University of Russia, Malaya Kaluzhskaya 1, 119071 Moscow, Russia
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26
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Ionescu OM, Iacob AT, Mignon A, Van Vlierberghe S, Baican M, Danu M, Ibănescu C, Simionescu N, Profire L. Design, preparation and in vitro characterization of biomimetic and bioactive chitosan/polyethylene oxide based nanofibers as wound dressings. Int J Biol Macromol 2021; 193:996-1008. [PMID: 34756969 DOI: 10.1016/j.ijbiomac.2021.10.166] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 10/03/2021] [Accepted: 10/21/2021] [Indexed: 12/16/2022]
Abstract
Chitosan-based nanofibers (CS-NFs) are excellent artificial extracellular matrices (ECMs) due to the resemblance of CS with the glycosaminoglycans of the natural ECMs. Despite this excellent feature, the poor electrospinnability and mechanical properties of CS are responsible for important limitations in respect to its biomedical applications. To improve the CS's physico-chemical properties, new bioactive and biomimetic CS-NFs were formulated with polyethylene oxide (PEO), having incorporated different active components (ACs) with important beneficial effects for healing. Manuka honey (trophic and antimicrobial effects), propolis (antimicrobial effects), Calendula officinalis infusion (antioxidant effect, reepithelialization stimulating agent), insulin (trophic effect), and L-arginine (angiogenic effect) were selected as ACs. SEM morphology analysis revealed well-alignment, unidirectional arrays, with small diameters, no beads, and smooth surfaces for developed CS_PEO-ACs NFs. The developed NFs showed good biodegradability (NFs mats lost up to 60% of their initial weight in PBS), increased hemocompatibility (hemolytic index less than 4%), and a reduced cytotoxicity degree (cell viability degree more than 90%). In addition, significant antioxidant and antimicrobial effects were noted for the developed NFs which make them suitable for chronic wounds, due to the role of oxidative stress and infection risk in delaying normal wound healing. The most suitable for wound healing applications seems to be CS_PEO@P_C which showed an improved hemolysis index (2.92 ± 0.16%), is non-toxic (cell viability degree more than 97%), and has also significant radical scavenging effect (DPPH inhibition more than 65%). In addition, CS_PEO@P_C presents increased antimicrobial effects, more noticeably for Staphylococcus aureus strain, which is a key feature in preventing wound infection and delaying the healing process. It can be concluded that the developed CS/PEO-ACs NFs are very promising biomaterials for wound care, especially CS_PEO@P_C.
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Affiliation(s)
- Oana Maria Ionescu
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy of Iași, 16 University Street, Iasi, Romania
| | - Andreea-Teodora Iacob
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy of Iași, 16 University Street, Iasi, Romania
| | - Arn Mignon
- Smart Polymeric Biomaterials, Surface and Interface Engineered Materials, Campus Group T, KU Leuven, Andreas Vesaliusstraat 13, 3000 Leuven, Belgium
| | - Sandra Van Vlierberghe
- Polymer Chemistry and Biomaterials Group, Center of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, S4-bis, 9000 Ghent, Belgium
| | - Mihaela Baican
- Department of Pharmaceutical Physics, Faculty of Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy of Iași, 16 University Street, Iasi, Romania
| | - Maricel Danu
- Department of Natural and Synthetic Polymers, Faculty of Chemical Engineering and Environmental Protection, "Gheorghe Asachi" Technical University of Iaşi, Mangeron Avenue 73, 700050 Iaşi, Romania; "Petru Poni" Institute of Macromolecular Chemistry, Centre of Advanced Research in Bionanoconjugates and Biopolymers, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Constanța Ibănescu
- Department of Natural and Synthetic Polymers, Faculty of Chemical Engineering and Environmental Protection, "Gheorghe Asachi" Technical University of Iaşi, Mangeron Avenue 73, 700050 Iaşi, Romania; "Petru Poni" Institute of Macromolecular Chemistry, Centre of Advanced Research in Bionanoconjugates and Biopolymers, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Natalia Simionescu
- "Petru Poni" Institute of Macromolecular Chemistry, Centre of Advanced Research in Bionanoconjugates and Biopolymers, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; "Prof. Dr. Nicolae Oblu" Emergency Clinical Hospital, 2 Ateneului Street, 700309 Iasi, Romania
| | - Lenuța Profire
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy of Iași, 16 University Street, Iasi, Romania.
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Li R, Zhang M, Wu Y, Tang P, Sun G, Wang L, Mandal S, Wang L, Lang J, Passalacqua A, Subramaniam S, Song G. What We Are Learning from COVID-19 for Respiratory Protection: Contemporary and Emerging Issues. Polymers (Basel) 2021; 13:4165. [PMID: 34883668 PMCID: PMC8659889 DOI: 10.3390/polym13234165] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 11/23/2021] [Accepted: 11/24/2021] [Indexed: 02/07/2023] Open
Abstract
Infectious respiratory diseases such as the current COVID-19 have caused public health crises and interfered with social activity. Given the complexity of these novel infectious diseases, their dynamic nature, along with rapid changes in social and occupational environments, technology, and means of interpersonal interaction, respiratory protective devices (RPDs) play a crucial role in controlling infection, particularly for viruses like SARS-CoV-2 that have a high transmission rate, strong viability, multiple infection routes and mechanisms, and emerging new variants that could reduce the efficacy of existing vaccines. Evidence of asymptomatic and pre-symptomatic transmissions further highlights the importance of a universal adoption of RPDs. RPDs have substantially improved over the past 100 years due to advances in technology, materials, and medical knowledge. However, several issues still need to be addressed such as engineering performance, comfort, testing standards, compliance monitoring, and regulations, especially considering the recent emergence of pathogens with novel transmission characteristics. In this review, we summarize existing knowledge and understanding on respiratory infectious diseases and their protection, discuss the emerging issues that influence the resulting protective and comfort performance of the RPDs, and provide insights in the identified knowledge gaps and future directions with diverse perspectives.
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Affiliation(s)
- Rui Li
- Department of Apparel, Events, and Hospitality Management, Iowa State University, Ames, IA 50010, USA; (R.L.); (M.Z.); (Y.W.); (L.W.)
| | - Mengying Zhang
- Department of Apparel, Events, and Hospitality Management, Iowa State University, Ames, IA 50010, USA; (R.L.); (M.Z.); (Y.W.); (L.W.)
| | - Yulin Wu
- Department of Apparel, Events, and Hospitality Management, Iowa State University, Ames, IA 50010, USA; (R.L.); (M.Z.); (Y.W.); (L.W.)
| | - Peixin Tang
- Department of Biological and Agricultural Engineering, University of California, Davis, CA 95616, USA; (P.T.); (G.S.)
| | - Gang Sun
- Department of Biological and Agricultural Engineering, University of California, Davis, CA 95616, USA; (P.T.); (G.S.)
| | - Liwen Wang
- Department of Apparel, Events, and Hospitality Management, Iowa State University, Ames, IA 50010, USA; (R.L.); (M.Z.); (Y.W.); (L.W.)
| | - Sumit Mandal
- Department of Design, Housing and Merchandising, Oklahoma State University, Stillwater, OK 74078, USA;
| | - Lizhi Wang
- Department of Industrial and Manufacturing Systems Engineering, Iowa State University, Ames, IA 50010, USA;
| | - James Lang
- Department of Kinesiology, Iowa State University, Ames, IA 50010, USA;
| | - Alberto Passalacqua
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50010, USA; (A.P.); (S.S.)
| | - Shankar Subramaniam
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50010, USA; (A.P.); (S.S.)
| | - Guowen Song
- Department of Apparel, Events, and Hospitality Management, Iowa State University, Ames, IA 50010, USA; (R.L.); (M.Z.); (Y.W.); (L.W.)
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Merchiers J, Martínez Narváez CDV, Slykas C, Reddy NK, Sharma V. Evaporation and Rheology Chart the Processability Map for Centrifugal Force Spinning. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01799] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Jorgo Merchiers
- Institute for Materials Research (IMO-IMOMEC), Hasselt University, B-3590 Diepenbeek, Belgium
- IMEC vzw−Division IMOMEC, Wetenschapspark 1, B-3590 Diepenbeek, Belgium
| | | | - Cheryl Slykas
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60608, United States
| | - Naveen K. Reddy
- Institute for Materials Research (IMO-IMOMEC), Hasselt University, B-3590 Diepenbeek, Belgium
- IMEC vzw−Division IMOMEC, Wetenschapspark 1, B-3590 Diepenbeek, Belgium
| | - Vivek Sharma
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60608, United States
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El-Aassar MR, Ibrahim OM, Al-Oanzi ZH. Biotechnological Applications of Polymeric Nanofiber Platforms Loaded with Diverse Bioactive Materials. Polymers (Basel) 2021; 13:3734. [PMID: 34771291 PMCID: PMC8586957 DOI: 10.3390/polym13213734] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 10/23/2021] [Accepted: 10/24/2021] [Indexed: 02/07/2023] Open
Abstract
This review article highlights the critical research and formative works relating to nanofiber composites loaded with bioactive materials for diverse applications, and discusses the recent research on the use of electrospun nanofiber incorporating bioactive compounds such as essential oils, herbal bioactive components, plant extracts, and metallic nanoparticles. Inevitably, with the common advantages of bioactive components and polymer nanofibers, electrospun nanofibers containing bioactive components have attracted intense interests for their applications in biomedicine and cancer treatment. Many studies have only concentrated on the production and performance of electrospun nanofiber loaded with bioactive components; in this regard, the features of different types of electrospun nanofiber incorporating a wide variety of bioactive compounds and their developing trends are summarized and assessed in the present article, as is the feasible use of nanofiber technology to produce products on an industrial scale in different applications.
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Affiliation(s)
- M. R. El-Aassar
- Department of Chemistry, College of Science, Jouf University, Sakaka 75471, Saudi Arabia
- Polymer Materials Research Department, Advanced Technology and New Material Institute, City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Alexandria 21934, Egypt
| | - Omar M. Ibrahim
- Department of Medicine, Division of Oncology, Washington University School of Medicine, St. Louis, MO 63110, USA;
| | - Ziad H. Al-Oanzi
- Department of Clinical Laboratories Sciences, College of Applied Medical Sciences, Jouf University, Sakaka 75471, Saudi Arabia
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Kaur S, Kumari A, Kumari Negi A, Galav V, Thakur S, Agrawal M, Sharma V. Nanotechnology Based Approaches in Phage Therapy: Overcoming the Pharmacological Barriers. Front Pharmacol 2021; 12:699054. [PMID: 34675801 PMCID: PMC8524003 DOI: 10.3389/fphar.2021.699054] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 07/26/2021] [Indexed: 12/12/2022] Open
Abstract
With the emergence and spread of global antibiotic resistance and the need for searching safer alternatives, there has been resurgence in exploring the use of bacteriophages in the treatment of bacterial infections referred as phage therapy. Although modern phage therapy has come a long way as demonstrated by numerous efficacy studies but the fact remains that till date, phage therapy has not received regulatory approval for human use (except for compassionate use).Thus, to hit the clinical market, the roadblocks need to be seriously addressed and gaps mended with modern solution based technologies. Nanotechnology represents one such ideal and powerful tool for overcoming the pharmacological barriers (low stability, poor in-vivo retention, targeted delivery, neutralisation by immune system etc.) of administered phage preparations.In literature, there are many review articles on nanotechnology and bacteriophages but these are primarily focussed on highlighting the use of lytic and temperate phages in different fields of nano-medicine such as nanoprobes, nanosensors, cancer diagnostics, cancer cell targeting, drug delivery through phage receptors, phage display etc. Reviews specifically focused on the use of nanotechnology driven techniques strictly to improve phage therapy are however limited. Moreover, these review if present have primarily focussed on discussing encapsulation as a primary method for improving the stability and retention of phage(s) in the body.With new advances made in the field of nanotechnology, approaches extend from mere encapsulation to recently adopted newer strategies. The present review gives a detailed insight into the more recent strategies which include 1) use of lipid based nano-carriers (liposomes, transfersomes etc.) 2) adopting microfluidic based approach, surface modification methods to further enhance the efficiency and stability of phage loaded liposomes 3) Nano- emulsification approach with integration of microfluidics for producing multiple emulsions (suitable for phage cocktails) with unique control over size, shape and drop morphology 4) Phage loaded nanofibers produced by electro-spinning and advanced core shell nanofibers for immediate, biphasic and delayed release systems and 5) Smart release drug delivery platforms that allow superior control over dosing and phage release as and when required. All these new advances are aimed at creating a suitable housing system for therapeutic bacteriophage preparations while targeting the multiple issues of phage therapy i.e., improving phage stability and titers, improving in-vivo retention times, acting as suitable delivery systems for sustained release at target site of infection, improved penetration into biofilms and protection from immune cell attack. The present review thus aims at giving a complete insight into the recent advances (2010 onwards) related to various nanotechnology based approaches to address the issues pertaining to phage therapy. This is essential for improving the overall therapeutic index and success of phage therapy for future clinical approval.
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Affiliation(s)
- Sandeep Kaur
- Department of Food Science, Mehr Chand Mahajan DAV College for Women, Chandigarh, India
| | - Anila Kumari
- Department of Food Science, Mehr Chand Mahajan DAV College for Women, Chandigarh, India
| | - Anjana Kumari Negi
- Department of Biochemistry, Dr. Rajendra Prasad Government Medical College, Himachal Pradesh, India
| | - Vikas Galav
- Department of Veterinary Pathology, Post Graduate Institute of Veterinary Education and Research (RAJUVAS), Jaipur, India
| | - Shikha Thakur
- Department of Biotechnology, Kumaun University, Uttarakhand, India
| | - Manish Agrawal
- Department of Veterinary Pathology, Post Graduate Institute of Veterinary Education and Research (RAJUVAS), Jaipur, India
| | - Vandana Sharma
- Department of Food Science, Mehr Chand Mahajan DAV College for Women, Chandigarh, India
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Abd El Hady WE, Soliman OAEA, El Sabbagh HM, Mohamed EA. Glutaraldehyde-crosslinked chitosan-polyethylene oxide nanofibers as a potential gastroretentive delivery system of nizatidine for augmented gastroprotective activity. Drug Deliv 2021; 28:1795-1809. [PMID: 34470551 PMCID: PMC8428272 DOI: 10.1080/10717544.2021.1971796] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Nizatidine (NIZ), a histamine H2-receptor antagonist, is soluble and stable in the stomach, however, it exhibits a short half-life and a rapid clearance. Therefore, chitosan (CS) and polyethylene oxide (PEO) nanofibers (NFs) at different weight ratios were prepared by electrospinning and characterized. The selected uncrosslinked and glutaraldehyde-crosslinked NFs were investigated regarding floating, solid-state characteristics, in vitro release, and in vitro cytotoxicity. The cytoprotective activity against ethanol-induced gastric injury in rats was evaluated through macroscopical, histopathological, immunohistochemical, and oxidative stress examinations. NFs based on 8:2 CS:PEO exhibited the smallest diameter (119.17 ± 22.05 nm) and the greatest mucoadhesion (22.82 ± 3.21 g/cm2), so they were crosslinked with glutaraldehyde. Solid-state characterization indicated polymers interaction, a successful crosslinking, and NIZ dispersion in NFs. Crosslinking maintained swollen mats at pH 1.2 (swelling% = 29.47 ± 3.50% at 24 h), retarded their erosion at pH 6.8 (swelling%= 84.64 ± 4.91% vs. 25.40 ± 0.79% for the uncrosslinked NFs at 24 h), augmented the floating up to 24 h vs. 10 min for the uncrosslinked NFs at pH 1.2 and prolonged the drug release (%drug released ≥ 93% at 24 h vs. 4 and 5 h for the uncrosslinked NFs at pHs 1.2 and 6.8, respectively). The viability of Caco-2 cells ≥ 86.87 ± 6.86% revealed NFs biocompatibility and unreacted glutaraldehyde removal. Crosslinking of 8:2 CS:PEO NFs potentiated the antiulcer activity (38.98 vs. 8.67 for the uncrosslinked NFs) as well as it preserved the gastric wall architecture, COX-2 expression, and oxidative stress markers levels of the normal rats.
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Abstract
Abstract
Chitosan is a biopolymer originating from renewable resources, with great properties which make it an attractive candidate for plenty of applications of contemporary interest. By manufacturing chitosan into nanofibers using the electrospinning method, its potential is amplified due to the enhancement of the active surface and the low preparation cost. Many attempts were made with the aim of preparing chitosan-based nanofibers with controlled morphology targeting their use for tissue engineering, wound healing, food packaging, drug delivery, air and water purification filters. This was a challenging task, which resulted in a high amount of data, sometimes with apparent contradictory results. In this light, the goal of the paper is to present the main routes reported in the literature for chitosan electrospinning, stressing the advantages and disadvantages of each of them. Special emphasis is placed on the influence of various electrospinning parameters on the morphological characteristics of the fibers and their suitability for distinct applications.
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Fadil F, Affandi NDN, Misnon MI, Bonnia NN, Harun AM, Alam MK. Review on Electrospun Nanofiber-Applied Products. Polymers (Basel) 2021; 13:2087. [PMID: 34202857 PMCID: PMC8271930 DOI: 10.3390/polym13132087] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/18/2021] [Accepted: 06/18/2021] [Indexed: 11/17/2022] Open
Abstract
Electrospinning technology, which was previously known as a scientific interdisciplinary research approach, is now ready to move towards a practice-based interdisciplinary approach in a variety of fields, progressively. Electrospun nanofiber-applied products are made directly from a nonwoven fabric-based membranes prepared from polymeric liquids involving the application of sufficiently high voltages during electrospinning. Today, electrospun nanofiber-based materials are of remarkable interest across multiple fields of applications, such as in electronics, sensors, functional garments, sound proofing, filters, wound dressing and scaffolds. This article presents such a review for summarizing the current progress on the manufacturing scalability of electrospun nanofibers and the commercialization of electrospun nanofiber products by dedicated companies globally. Despite the clear potential and limitless possibilities for electrospun nanofiber applications, the uptake of electrospinning by the industry is still limited due to the challenges in the manufacturing and turning of electrospun nanofibers into physical products. The recent developments in the field of electrospinning, such as the prominent nonwoven technology, personal views and the potential path forward for the growth of commercially applied products based on electrospun nanofibers, are also highlighted.
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Affiliation(s)
- Fatirah Fadil
- Textile Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam 40450, Selangor, Malaysia; (F.F.); (M.I.M.)
| | - Nor Dalila Nor Affandi
- Textile Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam 40450, Selangor, Malaysia; (F.F.); (M.I.M.)
| | - Mohd Iqbal Misnon
- Textile Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam 40450, Selangor, Malaysia; (F.F.); (M.I.M.)
| | - Noor Najmi Bonnia
- Materials Science and Technology, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam 40450, Selangor, Malaysia;
| | - Ahmad Mukifza Harun
- Faculty Engineering, University Malaysia Sabah, Kota Kinabalu 88400, Sabah, Malaysia
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Li Z, Mei S, Dong Y, She F, Li P, Li Y, Kong L. Multi-Functional Core-Shell Nanofibers for Wound Healing. NANOMATERIALS 2021; 11:nano11061546. [PMID: 34208135 PMCID: PMC8230886 DOI: 10.3390/nano11061546] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 05/28/2021] [Accepted: 06/09/2021] [Indexed: 11/30/2022]
Abstract
Core-shell nanofibers have great potential for bio-medical applications such as wound healing dressings where multiple drugs and growth factors are expected to be delivered at different healing phases. Compared to monoaxial nanofibers, core-shell nanofibers can control the drug release profile easier, providing sustainable and effective drugs and growth factors for wound healing. However, it is challenging to produce core-shell structured nanofibers with a high production rate at low energy consumption. Co-axial centrifugal spinning is an alternative method to address the above limitations to produce core-shell nanofibers effectively. In this study, a co-axial centrifugal spinning device was designed and assembled to produce core-shell nanofibers for controlling the release rate of ibuprofen and hEGF in inflammation and proliferation phases during the wound healing process. Core-shell structured nanofibers were confirmed by TEM. This work demonstrated that the co-axial centrifugal spinning is a high productivity process that can produce materials with a 3D environment mimicking natural tissue scaffold, and the specific drug can be loaded into different layers to control the drug release rate to improve the drug efficiency and promote wound healing.
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Affiliation(s)
- Zhen Li
- Hubei Key Laboratory of Digital Textile Equipment, Wuhan Textile University, Wuhan 430073, China; (Z.L.); (Y.D.)
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia;
- Foshan Green Intelligent Manufacturing Research Institute of Xiangtan University, Foshan 528000, China
| | - Shunqi Mei
- Hubei Key Laboratory of Digital Textile Equipment, Wuhan Textile University, Wuhan 430073, China; (Z.L.); (Y.D.)
- Correspondence: (S.M.); (L.K.)
| | - Yajie Dong
- Hubei Key Laboratory of Digital Textile Equipment, Wuhan Textile University, Wuhan 430073, China; (Z.L.); (Y.D.)
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia;
| | - Fenghua She
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia;
| | - Puwang Li
- South Subtropical Crop Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524091, China;
| | - Yongzhen Li
- Agricultural Product Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524001, China;
| | - Lingxue Kong
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia;
- Correspondence: (S.M.); (L.K.)
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35
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Garcia Garcia CE, Bossard F, Rinaudo M. Electrospun Biomaterials from Chitosan Blends Applied as Scaffold for Tissue Regeneration. Polymers (Basel) 2021; 13:1037. [PMID: 33810406 PMCID: PMC8036406 DOI: 10.3390/polym13071037] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 03/19/2021] [Accepted: 03/24/2021] [Indexed: 12/31/2022] Open
Abstract
Our objective in this work was to summarize the main results obtained in processing pure chitosan and chitosan/hyaluronan complex in view of biomedical applications, taking advantage of their original properties. In addition, an electrospinning technique was selected to prepare nanofiber mats well adapted for tissue engineering in relation to the large porosity of the materials, allowing an exchange with the environment. The optimum conditions for preparation of purified and stable nanofibers in aqueous solution and phosphate buffer pH = 7.4 are described. Their mechanical properties and degree of swelling are given. Then, the prepared biomaterials are investigated to test their advantage for chondrocyte development after comparison of nanofiber mats and uniform films. For that purpose, the adhesion of cells is studied by atomic force microscopy (AFM) using single-cell force spectroscopy, showing the good adhesion of chondrocytes on chitosan. At the end, adhesion and proliferation of chondrocytes in vitro are examined and clearly show the interest of chitosan nanofiber mats compared to chitosan film for potential application in tissue engineering.
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Affiliation(s)
- Christian Enrique Garcia Garcia
- Departamento de Ingeniería Química, Universidad de Guadalajara, Blvd. M. García Barragán #1451, Guadalajara C.P. 44430, Jalisco, Mexico
- Institute of Engineering Universite, Universite Grenoble Alpes, CNRS, LRP 38000 Grenoble, France;
| | - Frédéric Bossard
- Institute of Engineering Universite, Universite Grenoble Alpes, CNRS, LRP 38000 Grenoble, France;
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Costa-Pinto AR, Lemos AL, Tavaria FK, Pintado M. Chitosan and Hydroxyapatite Based Biomaterials to Circumvent Periprosthetic Joint Infections. MATERIALS (BASEL, SWITZERLAND) 2021; 14:804. [PMID: 33567675 PMCID: PMC7914941 DOI: 10.3390/ma14040804] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/23/2021] [Accepted: 02/02/2021] [Indexed: 02/06/2023]
Abstract
Every year, worldwide, millions of people suffering from joint pain undergo joint replacement. For most patients, joint arthroplasty reduces pain and improve function, though a small fraction will experience implant failure. One of the main reasons includes prosthetic joint infection (PJI), involving the prosthesis and adjacent tissues. Few microorganisms (MO) are required to inoculate the implant, resulting in the formation of a biofilm on its surface. Standard treatment includes not only removal of the infected prosthesis but also the elimination of necrotic bone fragments, local and/or systemic administration of antibiotics, and revision arthroplasty with a new prosthesis, immediately after the infection is cleared. Therefore, an alternative to the conventional therapeutics would be the incorporation of natural antimicrobial compounds into the prosthesis. Chitosan (Ch) is a potential valuable biomaterial presenting properties such as biocompatibility, biodegradability, low immunogenicity, wound healing ability, antimicrobial activity, and anti-inflammatory potential. Regarding its antimicrobial activity, Gram-negative and Gram-positive bacteria, as well as fungi are highly susceptible to chitosan. Calcium phosphate (CaP)-based materials are commonly utilized in orthopedic and dentistry for their excellent biocompatibility and bioactivity, particularly in the establishment of cohesive bone bonding that yields effective and rapid osteointegration. At present, the majority of CaP-based materials are synthetic, which conducts to the depletion of the natural resources of phosphorous in the future due to the extensive use of phosphate. CaP in the form of hydroxyapatite (HAp) may be extracted from natural sources as fish bones or scales, which are by-products of the fish food industry. Thus, this review aims to enlighten the fundamental characteristics of Ch and HAp biomaterials which makes them attractive to PJI prevention and bone regeneration, summarizing relevant studies with these biomaterials to the field.
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Affiliation(s)
| | | | | | - Manuela Pintado
- Universidade Católica Portuguesa, CBQF-Centro de Biotecnologia e Química Fina-Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal; (A.L.L.); (F.K.T.)
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37
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Ahmadi S, Hivechi A, Bahrami SH, Milan PB, Ashraf SS. Cinnamon extract loaded electrospun chitosan/gelatin membrane with antibacterial activity. Int J Biol Macromol 2021; 173:580-590. [PMID: 33513421 DOI: 10.1016/j.ijbiomac.2021.01.156] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 01/14/2021] [Accepted: 01/23/2021] [Indexed: 01/11/2023]
Abstract
This study develops chitosan/gelatin nanofiber membranes with sustained release capacity to prevent infection by delivering cinnamon extract (CE) in the implanted site. The effects of the incorporation of CE content (2-6%) on the properties of the nanofibers were evaluated. Morphological studies using SEM indicated that loading the extract did not affect the average diameter of nanofiber mats, which remained around 140-170 nm. TGA and FTIR spectroscopy results confirmed successful CE loading. Furthermore, the results showed that incorporating extract into the nanofibers enhanced their degradation behavior, antibacterial activity, and biocompatibility. Cultured cells attached to and proliferate on the nanofiber membrane with high cell viability capacity until the CE content reached 4%. The extract release profile consisted of a burst release in the first 6 h, followed by a controlled release in the next 138 h. Therefore, CE loaded chitosan/gelatin nanofiber is an excellent construct for biomedical applications.
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Affiliation(s)
- Soroush Ahmadi
- Department of Textile Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Ahmad Hivechi
- Department of Textile Engineering, Amirkabir University of Technology, Tehran, Iran; Department of Tissue Engineering and Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran; Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran; Institute of Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran.
| | - S Hajir Bahrami
- Department of Textile Engineering, Amirkabir University of Technology, Tehran, Iran.
| | - Peiman B Milan
- Department of Tissue Engineering and Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran; Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran; Institute of Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Seyedeh Sara Ashraf
- Institute of Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
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38
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Salazar-Brann SA, Patiño-Herrera R, Navarrete-Damián J, Louvier-Hernández JF. Electrospinning of chitosan from different acid solutions. AIMS BIOENGINEERING 2021. [DOI: 10.3934/bioeng.2021011] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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39
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Sergi R, Cannillo V, Boccaccini AR, Liverani L. A New Generation of Electrospun Fibers Containing Bioactive Glass Particles for Wound Healing. MATERIALS 2020; 13:ma13245651. [PMID: 33322335 PMCID: PMC7763513 DOI: 10.3390/ma13245651] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 12/08/2020] [Accepted: 12/09/2020] [Indexed: 01/10/2023]
Abstract
Chitosan fibers blended with polyethylene oxide (CHIT_PEO) and crosslinked with genipin were fabricated by electrospinning technique. Subsequently, CHIT_PEO bioactive glass composite electrospun mats were fabricated with the aim to achieve flexible structures with adequate mechanical properties and improved biological performance respect to CHIT_PEO fibers, for potential applications in wound healing. Three different compositions of bioactive glasses (BG) were selected and investigated: 45S5 BG, a Sr and Mg containing bioactive glass (BGMS10) and a Zn-containing bioactive glass (BGMS_2Zn). Particulate BGs (particles size < 20 μm) were separately added to the starting CHIT_PEO solution before electrospinning. The two recently developed bioactive glasses (BGMS10 and BGMS_2Zn) showed very promising biological properties in terms of bioactivity and cellular viability; thus, such compositions were added for the first time to CHIT_PEO solution to fabricate composite electrospun mats. The incorporation of bioactive glass particles and their distribution into CHIT_PEO fibers were assessed by SEM and FTIR analyses. Furthermore, CHIT_PEO composite electrospun mats showed improved mechanical properties in terms of Young’s Modulus compared to neat CHIT_PEO fibers; on the contrary, the values of tensile strain at break (%) were comparable. Biological performance in terms of cellular viability was investigated by means of WST-8 assay and CHIT_PEO composite electrospun mats showed cytocompatibility and the desired cellular viability.
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Affiliation(s)
- Rachele Sergi
- Dipartimento di Ingegneria Enzo Ferrari, Università degli Studi di Modena e Reggio Emilia, Via P. Vivarelli 10, 41125 Modena, Italy; (R.S.); (V.C.)
| | - Valeria Cannillo
- Dipartimento di Ingegneria Enzo Ferrari, Università degli Studi di Modena e Reggio Emilia, Via P. Vivarelli 10, 41125 Modena, Italy; (R.S.); (V.C.)
| | - Aldo R. Boccaccini
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Cauerstr. 6, 91058 Erlangen, Germany;
| | - Liliana Liverani
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Cauerstr. 6, 91058 Erlangen, Germany;
- Correspondence: ; Tel.: +49-(0)9131-85-28603
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40
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Chen J, Li X, Liu Q, Wu Y, Shu L, He Z, Ye C, Ma M. Fabrication of multilayered electrospun poly(lactic-co-glycolic acid)/polyvinyl pyrrolidone + poly(ethylene oxide) scaffolds and biocompatibility evaluation. J Biomed Mater Res A 2020; 109:1468-1478. [PMID: 33289293 DOI: 10.1002/jbm.a.37137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 10/28/2020] [Accepted: 11/28/2020] [Indexed: 12/13/2022]
Abstract
Poly(lactic-co-glycolic acid)/polyvinyl pyrrolidone + poly(ethylene oxide) [PLGA/(PVP + PEO)] scaffolds with different polymer concentrations were fabricated using multilayered electrospinning, and their physicochemical properties and biocompatibility were examined to screen for scaffolds with excellent performance in tissue engineering (TE). PLGA solution (15% w/v) was used as the bottom solution, and a mixed solution of 12% w/v PVP + PEO was applied as the surface layer solution. The mass ratios of PVP vs. PEO in each 10 ml surface layer mixed solution were 1.08 g: 0.12 g; 0.96 g: 0.24 g; and 0.84 g: 0.36 g. Compared to the conventional electrospinning method used to fabricate the pure PVP + PEO (0.96 g: 0.24 g, Group A) scaffold and pure PLGA (Group E) scaffold, the multilayer electrospinning technique of alternating sprays of the bottom layer solution and the surface layer solution was adopted to fabricate multilayer nanofiber scaffolds, including PLGA/(PVP + PEO) (1.08 g: 0.12 g, Group B), PLGA/(PVP + PEO) (0.96 g: 0.24 g, Group C), and PLGA/(PVP + PEO) (0.84 g: 0.36 g, Group D). The morphology and characteristics of the five scaffolds were analyzed, and the biocompatibilities of the cell-scaffold composites were assessed through methods including Cell Counting Kit-8 (CCK8) analysis, 4',6-diamidino-2-phenylindole (DAPI) staining, and scanning electron microscopy. Therefore, with a PVP-to-PEO mass ratio of 0.96 g: 0.24 g, an optimal multilayer nanofiber scaffold was fabricated by the multilayer electrospinning technique. The excellent biocompatibility and mechanical properties of the scaffold were confirmed by in vitro experiments, which demonstrated the scaffold's promising application potential in the field of TE.
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Affiliation(s)
- Jiao Chen
- The Affiliated Stomatological Hospital of Guizhou Medical University, Guiyang, China.,Stomatological Hospital of GuiYang, Guiyang, China.,National-Local Joint Engineering Laboratory of Cell Engineering and Biomedicine, Guiyang, China.,Center for Tissue Engineering and Stem Cell Research, Guizhou Medical University, Guiyang, China
| | - Xuanze Li
- Stomatological Hospital of GuiYang, Guiyang, China.,National-Local Joint Engineering Laboratory of Cell Engineering and Biomedicine, Guiyang, China.,Center for Tissue Engineering and Stem Cell Research, Guizhou Medical University, Guiyang, China
| | - Qin Liu
- The Affiliated Stomatological Hospital of Guizhou Medical University, Guiyang, China.,Stomatological Hospital of GuiYang, Guiyang, China.,National-Local Joint Engineering Laboratory of Cell Engineering and Biomedicine, Guiyang, China.,Center for Tissue Engineering and Stem Cell Research, Guizhou Medical University, Guiyang, China
| | - Ying Wu
- The Affiliated Stomatological Hospital of Guizhou Medical University, Guiyang, China.,Stomatological Hospital of GuiYang, Guiyang, China.,National-Local Joint Engineering Laboratory of Cell Engineering and Biomedicine, Guiyang, China.,Center for Tissue Engineering and Stem Cell Research, Guizhou Medical University, Guiyang, China
| | - Liping Shu
- Stomatological Hospital of GuiYang, Guiyang, China.,National-Local Joint Engineering Laboratory of Cell Engineering and Biomedicine, Guiyang, China.,Center for Tissue Engineering and Stem Cell Research, Guizhou Medical University, Guiyang, China
| | - Zhixu He
- Center for Tissue Engineering and Stem Cell Research, Guizhou Medical University, Guiyang, China
| | - Chuan Ye
- Stomatological Hospital of GuiYang, Guiyang, China.,National-Local Joint Engineering Laboratory of Cell Engineering and Biomedicine, Guiyang, China.,Center for Tissue Engineering and Stem Cell Research, Guizhou Medical University, Guiyang, China.,China Orthopaedic Regenerative Medicine Group (CORMed), Hangzhou, China
| | - Minxian Ma
- Stomatological Hospital of GuiYang, Guiyang, China.,National-Local Joint Engineering Laboratory of Cell Engineering and Biomedicine, Guiyang, China.,Center for Tissue Engineering and Stem Cell Research, Guizhou Medical University, Guiyang, China.,Key Laboratory of Adult Stem Cell Transformation Research, Chinese Academy of Medical Sciences, Guiyang, China
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41
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Singh M, Chauhan D, Das AK, Iqbal Z, Solanki PR. PVA
/
PMMA
polymer blended composite electrospun nanofibers mat and their potential use as an anti‐biofilm product. J Appl Polym Sci 2020. [DOI: 10.1002/app.50340] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Manvi Singh
- Special Centre for Nanoscience Jawaharlal Nehru University New Delhi 110067 India
- Department of Pharmaceutics School of Pharmaceutical Education and Research, Jamia Hamdard New Delhi 110062 India
| | - Deepika Chauhan
- Special Centre for Nanoscience Jawaharlal Nehru University New Delhi 110067 India
| | - Ayan K. Das
- Department of Microbiology Hamdard Institute of Medical Sciences and Research, Jamia Hamdard New Delhi 110062 India
| | - Zeenat Iqbal
- Department of Pharmaceutics School of Pharmaceutical Education and Research, Jamia Hamdard New Delhi 110062 India
| | - Pratima R. Solanki
- Special Centre for Nanoscience Jawaharlal Nehru University New Delhi 110067 India
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42
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Saudi S, Bhattarai SR, Adhikari U, Khanal S, Sankar J, Aravamudhan S, Bhattarai N. Nanonet-nano fiber electrospun mesh of PCL-chitosan for controlled and extended release of diclofenac sodium. NANOSCALE 2020; 12:23556-23569. [PMID: 33135713 DOI: 10.1039/d0nr05968d] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Electrospun nanofiber (EN) technology has been used in the past to generate electrostatically charged multilayer-nanofibers. This platform offers versatile applications including in tissue engineering, drug delivery, wound dressings, and high-efficiency particulate air filters. In this study, we synthesized for the first time nanonet-nanofiber electrospun meshes (NNEMs) of polycaprolactone (PCL)-chitosan (CH) using EN technology. The fabricated NNEMs were utilized for high payload delivery and controlled release of a water-soluble drug. Diclofenac Sodium (DS), a hydrophilic anti-inflammatory drug, was selected as a model drug because of its high aqueous solubility and poor compatibility with insoluble polymers. Various compositions of DS drug-loaded NNEMs (DS-NNEMs) were synthesized. The physicochemical properties such as structure, morphology, and aqueous stability and the chemical properties of DS-NNEMs were evaluated. High drug entrapment efficiency and concentration-dependent drug release patterns were investigated for up to 14 days. Furthermore, the biocompatibility of the DS-NNEMs was tested with NIH 3T3 cells. The physicochemical characterization results showed that the DS drug is a key contributing factor in the generation of nanonet-nanofiber networks during electrospinning. DS-NNEMs also enhanced 3T3 cell adhesion, viability, and proliferation in the nanonet-nano fiber network through the controlled release of DS. The presented EN technology-based biodegradable NNEM material is not only limited for the controlled release of hydrophilic anti-inflammatory drugs, but also can be a suitable platform for loading and release of antiviral drugs.
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Affiliation(s)
- Sheikh Saudi
- Department of Nanoengineering, Joint School of Nanoscience and Nanoengineering, North Carolina A&T State University, Greensboro, NC 27401, USA
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43
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Amiri N, Ajami S, Shahroodi A, Jannatabadi N, Amiri Darban S, Fazly Bazzaz BS, Pishavar E, Kalalinia F, Movaffagh J. Teicoplanin-loaded chitosan-PEO nanofibers for local antibiotic delivery and wound healing. Int J Biol Macromol 2020; 162:645-656. [DOI: 10.1016/j.ijbiomac.2020.06.195] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 06/18/2020] [Accepted: 06/19/2020] [Indexed: 02/01/2023]
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44
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Garcia Garcia CE, Soltero Martínez FA, Bossard F, Rinaudo M. Production of Chitosan/Hyaluronan Complex Nanofibers. Characterization and Physical Properties as a Function of the Composition. Polymers (Basel) 2020; 12:E2004. [PMID: 32899169 PMCID: PMC7565965 DOI: 10.3390/polym12092004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 08/31/2020] [Accepted: 09/01/2020] [Indexed: 01/09/2023] Open
Abstract
In this work, optimized conditions for preparation of chitosan and hyaluronan polyelectrolyte complex are proposed. The objective was to produce new biomaterials being biocompatible and bioresorbable in the body as well as approaching the extracellular matrix (ECM) structure. These materials will be tested for chondrocyte development in tissue engineering and wound healing applications. Nanofibers made of the polyelectrolyte complex (PEC) were successfully manufactured by electrospinning, and casted films were used as a model for properties comparison. To our knowledge, it is the first time that stable chitosan/hyaluronan fibers are produced, which were observed to be long-lasting in buffer at pH~7.4. The role of thermal treatment at 120 °C for 4 h is examined to control the degree of swelling by crosslinking of the two polysaccharides by H-bonds and amide bonds formation. The properties of the materials are tested for different PEC compositions at different pH values, based on swelling and solubility degrees, diameters of nanofibers and mechanical performances. The influence of the solvent (acidic potential and composition) utilized to process biomaterials is also examined. Acid formic/water 50/50 v/v is observed to be the more appropriated solvent for the carried-out procedures.
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Affiliation(s)
- Christian Enrique Garcia Garcia
- Departamento de Ingeniería Química-CUCEI. Blvd. M. García Barragán #1451, C.P., Universidad de Guadalajara, Guadalajara, Jalisco 44430, Mexico;
- Université Grenoble Alpes, CNRS, Grenoble INP, LRP, Institute of Engineering University of Grenoble Alpes, 38000 Grenoble, France;
| | - Félix Armando Soltero Martínez
- Departamento de Ingeniería Química-CUCEI. Blvd. M. García Barragán #1451, C.P., Universidad de Guadalajara, Guadalajara, Jalisco 44430, Mexico;
| | - Frédéric Bossard
- Université Grenoble Alpes, CNRS, Grenoble INP, LRP, Institute of Engineering University of Grenoble Alpes, 38000 Grenoble, France;
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45
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Surgutskaia NS, Martino AD, Zednik J, Ozaltin K, Lovecká L, Bergerová ED, Kimmer D, Svoboda J, Sedlarik V. Efficient Cu2+, Pb2+ and Ni2+ ion removal from wastewater using electrospun DTPA-modified chitosan/polyethylene oxide nanofibers. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116914] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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46
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Rodríguez-Sánchez IJ, Fuenmayor CA, Clavijo-Grimaldo D, Zuluaga-Domínguez CM. Electrospinning of ultra-thin membranes with incorporation of antimicrobial agents for applications in active packaging: a review. INT J POLYM MATER PO 2020. [DOI: 10.1080/00914037.2020.1785450] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
| | - Carlos Alberto Fuenmayor
- Instituto de Ciencia y Tecnología de Alimentos, Universidad Nacional de Colombia, Sede Bogotá, Colombia
| | - Dianney Clavijo-Grimaldo
- Departamento de Morfología, Facultad de Medicina, Universidad Nacional de Colombia, Sede Bogotá, Colombia
| | - Carlos Mario Zuluaga-Domínguez
- Departamento de Desarrollo Rural y Agroalimentario, Facultad de Ciencias Agrarias, Universidad Nacional de Colombia, Sede Bogotá, Colombia
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47
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Mulholland EJ. Electrospun Biomaterials in the Treatment and Prevention of Scars in Skin Wound Healing. Front Bioeng Biotechnol 2020; 8:481. [PMID: 32582653 PMCID: PMC7283777 DOI: 10.3389/fbioe.2020.00481] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 04/24/2020] [Indexed: 12/13/2022] Open
Abstract
Electrospinning is a promising method for the rapid and cost-effective production of nanofibers from a wide variety of polymers given the high surface area morphology of these nanofibers, they make excellent wound dressings, and so have significant potential in the prevention and treatment of scars. Wound healing and the resulting scar formation are exceptionally well-characterized on a molecular and cellular level. Despite this, novel effective anti-scarring treatments which exploit this knowledge are still clinically absent. As the process of electrospinning can produce fibers from a variety of polymers, the treatment avenues for scars are vast, with therapeutic potential in choice of polymers, drug incorporation, and cell-seeded scaffolds. It is essential to show the new advances in this field; thus, this review will investigate the molecular processes of wound healing and scar tissue formation, the process of electrospinning, and examine how electrospun biomaterials can be utilized and adapted to wound repair in the hope of reducing scar tissue formation and conferring an enhanced tensile strength of the skin. Future directions of the research will explore potential novel electrospun treatments, such as gene therapies, as targets for enhanced tissue repair applications. With this class of biomaterial gaining such momentum and having such promise, it is necessary to refine our understanding of its process to be able to combine this technology with cutting-edge therapies to relieve the burden scars place on world healthcare systems.
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Affiliation(s)
- Eoghan J. Mulholland
- Gastrointestinal Stem Cell Biology Laboratory, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
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48
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Jhala D, Rather HA, Vasita R. Extracellular matrix mimicking polycaprolactone-chitosan nanofibers promote stemness maintenance of mesenchymal stem cells via spheroid formation. ACTA ACUST UNITED AC 2020; 15:035011. [PMID: 32266877 DOI: 10.1088/1748-605x/ab772e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The development of clinical applications has led to a perpetual increase in the demand for mesenchymal stem cells (MSCs). However, the ex vivo expansion of MSCs while maintaining their stemness and differentiation potential remains an immense challenge. MSCs require high cell density for their intercellular communication and specific physico-chemical cues from the surrounding environment for spheroid formation in order to maintain their stemness. Inadequacy of the traditional in vitro cell culture method (tissue culture plastic surface) to fulfill any of these special requirements is responsible for inducing the loss of stem cell properties of the MSCs over time. In this study, we propose that glucosaminoglycan (GAG) mimicking ultrafine nanofibers could support the spheroid culture for in vitro human MSC expansion. The geometrical and biochemical properties of nanofibers provide biomimicking cues to MSCs, as well as enhance cell-cell interactions and stimulate spheroid formation in MSCs, which subsequently result in increased cell proliferation, enhanced expression of stem cell markers and maintenance of their multilineage differentiation potential. Furthermore, close monitoring of the behavior of MSCs on nanofibers serves as the key to understand their mode of action in niche formation. Interestingly, GAG mimicking substrate stimulated MSCs for long-distance intercellular communication via 'tunneling tubes', their subsequent migration and niche formation. These kinds of cellular interactions over long distances have rarely been observed in MSCs to provide better insight for future studies on MSC niche. Furthermore, PCL-CHT nanofibers were observed to be as conducive to use as tissue culture polystyrene for stem cell expansion. Overall, these polymeric nanofibers provide a more relevant, convenient and more suitable substrate than the conventional monolayer culture for in vitro MSC expansion.
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Affiliation(s)
- Dhwani Jhala
- Biomaterials & Biomimetics Laboratory, School of Life Sciences, Central University of Gujarat, Gandhinagar, India
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Bernabé P, Becherán L, Cabrera-Barjas G, Nesic A, Alburquenque C, Tapia CV, Taboada E, Alderete J, De Los Ríos P. Chilean crab (Aegla cholchol) as a new source of chitin and chitosan with antifungal properties against Candida spp. Int J Biol Macromol 2020; 149:962-975. [DOI: 10.1016/j.ijbiomac.2020.01.126] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 01/13/2020] [Accepted: 01/13/2020] [Indexed: 02/07/2023]
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Singh YP, Dasgupta S, Nayar S, Bhaskar R. Optimization of electrospinning process & parameters for producing defect-free chitosan/polyethylene oxide nanofibers for bone tissue engineering. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2020; 31:781-803. [PMID: 31958253 DOI: 10.1080/09205063.2020.1718824] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Chitosan (CS) nanofibers were electrospun from aqueous chitosan solution using concentrated acetic acid solution as a solvent. Polyethylene oxide (PEO) with varying weight content from 10- 60 wt% was mixed with chitosan solution that acted as a plasticizer to improve spinability of the prepared chitosan solution. With the increase in PEO content from 10-50 wt% the viscosity of the resultant CS/PEO solution was decreased from 0.938 Pa-s to 0.272 Pa-s, whereas higher the concentration of acetic acid lower was the surface tension of resultant chitosan solution. It was found beadless nanofibrous chitosan mat was obtained not less than 85% acetic acid concentration, 50 wt% PEO and at 0.2 wt% NaCl and 5 wt% total polymer concentration. From field emission scanning electron microscopy (FESEM) investigation, it was observed that chitosan fibers with an average diameter of 149 nm were produced at an applied voltage of 22.5 KV, while that varied between 17.5- 25 KV. On the other hand, a minimum of 110 nm of average diameter chitosan nanofiber was obtained at a needle tip to rotor collector distance of 15 cm by the method of electrospining. In terms of solution flow rate, 0.4 mL/h was found to be optimum in obtaining defect-free electrospun fiber with lower average diameter. As a whole, smooth and uniform chitosan nanofibers were obtained from 50/50 CS/PEO solution prepared by using 90% acetic acid and electrospun at 20 kV applied voltage, 15 cm needle tip-to- rotor collector distance with 0.2 mm inner diameter needle and 0.4 mL/h feeding rate. After crosslinking with 1 wt% glutaraldehyde (GTA), the ultimate tensile strength and Young's modulus of chitosan scaffold increased upto 9.47 MPa and 147.75 MPa respectively. From MTT assay and alkaline phosphatase expression analysis upto 11 days of cell culture period it was evident that thus prepared electrospun CS scaffolds supported MG 63 cell proliferation and its differentiation into mature osteoblast.
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Affiliation(s)
- Yogendra Pratap Singh
- Department of Ceramic Engineering, National Institute of Technology, Rourkela, India
| | - Sudip Dasgupta
- Department of Ceramic Engineering, National Institute of Technology, Rourkela, India
| | - Suprabha Nayar
- Materials Science and Technology Division, National Metallurgical Laboratory, Jamshedpur, India
| | - Rakesh Bhaskar
- Department of Biotechnology & Medical Engineering, National Institute of Technology, Rourkela, India
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