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Zhang T, Chen K, Wu X, Xiao X. Preparation of nanofibrous poly (L-lactic acid) scaffolds using the thermally induced phase separation technique in dioxane/polyethylene glycol solution. Des Monomers Polym 2023; 26:77-89. [PMID: 36998721 PMCID: PMC10044164 DOI: 10.1080/15685551.2023.2194175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023] Open
Abstract
Porous nanofibrous poly (L-lactic acid) (PLLA) scaffolds were fabricated in combination with a thermally induced phase separation technique using a dioxane/polyethylene glycol (PEG) system. The effect of factors such as molecular weight of PEG, aging treatment, aging or gelation temperature, and the ratio of PEG to dioxane were investigated. The results revealed that all scaffolds had high porosity, and had a significant impact on the formation of nanofibrous structures. The decrease in the molecular weight and aging or gelation temperature leads to a thinner and more uniform fibrous structure.
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Biernat M, Szwed-Georgiou A, Rudnicka K, Płociński P, Pagacz J, Tymowicz-Grzyb P, Woźniak A, Włodarczyk M, Urbaniak MM, Krupa A, Rusek-Wala P, Karska N, Rodziewicz-Motowidło S. Dual Modification of Porous Ca-P/PLA Composites with APTES and Alendronate Improves Their Mechanical Strength and Cytobiocompatibility towards Human Osteoblasts. Int J Mol Sci 2022; 23:ijms232214315. [PMID: 36430791 PMCID: PMC9692370 DOI: 10.3390/ijms232214315] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 11/14/2022] [Accepted: 11/16/2022] [Indexed: 11/19/2022] Open
Abstract
Synthetic implants are used to treat large bone defects that are often unable to regenerate, for example those caused by osteoporosis. It is necessary that the materials used to manufacture them are biocompatible and resorbable. Polymer-ceramic composites, such as those based on poly(L-lactide) (PLLA) and calcium phosphate ceramics (Ca-P), are often used for these purposes. In this study, we attempted to investigate an innovative strategy for two-step (dual) modification of composites and their components to improve the compatibility of composite components and the adhesion between PLA and Ca-P whiskers, and to increase the mechanical strength of the composite, as well as improve osteological bioactivity and prevent bone resorption in composites intended for bone regeneration. In the first step, Ca-P whiskers were modified with a saturated fatty acid namely, lauric acid (LA), or a silane coupling agent γ-aminopropyltriethoxysilane (APTES). Then, the composite, characterized by the best mechanical properties, was modified in the second stage of the work with an active chemical compound used in medicine as a first-line drug in osteoporosis-sodium alendronate, belonging to the group of bisphosphonates (BP). As a result of the research covered in this work, the composite modified with APTES and alendronate was found to be a promising candidate for future biomedical engineering applications.
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Affiliation(s)
- Monika Biernat
- Biomaterials Research Group, Łukasiewicz Research Network-Institute of Ceramics and Building Materials, Center of Ceramic and Concrete in Warsaw, Cementowa 8, 31-983 Kraków, Poland
- Correspondence: (M.B.); (A.S.-G.)
| | - Aleksandra Szwed-Georgiou
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland
- Correspondence: (M.B.); (A.S.-G.)
| | - Karolina Rudnicka
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland
| | - Przemysław Płociński
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland
| | - Joanna Pagacz
- Biomaterials Research Group, Łukasiewicz Research Network-Institute of Ceramics and Building Materials, Center of Ceramic and Concrete in Warsaw, Cementowa 8, 31-983 Kraków, Poland
| | - Paulina Tymowicz-Grzyb
- Biomaterials Research Group, Łukasiewicz Research Network-Institute of Ceramics and Building Materials, Center of Ceramic and Concrete in Warsaw, Cementowa 8, 31-983 Kraków, Poland
| | - Anna Woźniak
- Biomaterials Research Group, Łukasiewicz Research Network-Institute of Ceramics and Building Materials, Center of Ceramic and Concrete in Warsaw, Cementowa 8, 31-983 Kraków, Poland
| | - Marcin Włodarczyk
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland
| | - Mateusz M. Urbaniak
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland
- Bio-Med-Chem Doctoral School, University of Łódź and Łódź Institutes of the Polish Academy of Sciences, Banacha 12/16, 90-237 Łódź, Poland
| | - Agnieszka Krupa
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland
| | - Paulina Rusek-Wala
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland
- Bio-Med-Chem Doctoral School, University of Łódź and Łódź Institutes of the Polish Academy of Sciences, Banacha 12/16, 90-237 Łódź, Poland
| | - Natalia Karska
- Faculty of Chemistry, University of Gdańsk, Wita-Stwosza 63, 80-308 Gdańsk, Poland
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Dou T, Zhou B, Hu S, Zhang P. Evolution of the structural polymorphs of poly(l-lactic acid) during the in vitro mineralization of its hydroxyapatite nanocomposites by attenuated total reflection fourier transform infrared mapping coupled with principal component analysis. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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4
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Szustakiewicz K, Kryszak B, Dzienny P, Poźniak B, Tikhomirov M, Hoppe V, Szymczyk-Ziółkowska P, Tylus W, Grzymajło M, Gadomska-Gajadhur A, Antończak AJ. Cytotoxicity Study of UV-Laser-Irradiated PLLA Surfaces Subjected to Bio-Ceramisation: A New Way towards Implant Surface Modification. Int J Mol Sci 2021; 22:8436. [PMID: 34445136 PMCID: PMC8395104 DOI: 10.3390/ijms22168436] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 07/30/2021] [Accepted: 08/01/2021] [Indexed: 11/16/2022] Open
Abstract
In this research we subjected samples of poly(L-lactide) (PLLA) extruded film to ultraviolet (193 nm ArF excimer laser) radiation below the ablation threshold. The modified film was immersed in Simulated Body Fluid (SBF) at 37 °C for 1 day or 7 days to obtain a layer of apatite ceramic (CaP) coating on the modified PLLA surface. The samples were characterized by means of optical profilometry, which indicated an increase in average roughness (Ra) from 25 nm for the unmodified PLLA to over 580 nm for irradiated PLLA incubated in SBF for 1 day. At the same time, the water contact angle decreased from 78° for neat PLLA to 35° for irradiated PLLA incubated in SBF, which suggests its higher hydrophilicity. The obtained materials were investigated by means of cell response fibroblasts (3T3) and macrophage-like cells (RAW 264.7). Properties of the obtained composites were compared to the unmodified PLLA film as well as to the UV-laser irradiated PLLA. The activation of the PLLA surface by laser irradiation led to a distinct increase in cytotoxicity, while the treatment with SBF and the deposition of apatite ceramic had only a limited preventive effect on this harmful impact and depended on the cell type. Fibroblasts were found to have good tolerance for the irradiated and ceramic-covered PLLA, but macrophages seem to interact with the substrate leading to the release of cytotoxic products.
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Affiliation(s)
- Konrad Szustakiewicz
- Department of Polymer Engineering and Technology, Faculty of Chemistry, Wrocław University of Science and Technology (WUST), Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland;
| | - Bartłomiej Kryszak
- Department of Polymer Engineering and Technology, Faculty of Chemistry, Wrocław University of Science and Technology (WUST), Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland;
| | - Paulina Dzienny
- Laser and Fiber Electronics Group, Faculty of Electrical Engineering, Wrocław University of Science and Technology, 50-370 Wrocław, Poland; (P.D.); (A.J.A.)
| | - Błażej Poźniak
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, ul. Norwida 25, 50-375 Wrocław, Poland; (B.P.); (M.T.)
| | - Marta Tikhomirov
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, ul. Norwida 25, 50-375 Wrocław, Poland; (B.P.); (M.T.)
| | - Viktoria Hoppe
- Centre for Advanced Manufacturing Technologies, Faculty of Mechanical Engineering, Wrocław University of Science and Technology (WUST), Łukasiewicza 5, 50-370 Wrocław, Poland; (V.H.); (P.S.-Z.)
| | - Patrycja Szymczyk-Ziółkowska
- Centre for Advanced Manufacturing Technologies, Faculty of Mechanical Engineering, Wrocław University of Science and Technology (WUST), Łukasiewicza 5, 50-370 Wrocław, Poland; (V.H.); (P.S.-Z.)
| | - Włodzimierz Tylus
- Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology, 50-370 Wrocław, Poland;
| | - Michał Grzymajło
- Department of Polymer Engineering and Technology, Faculty of Chemistry, Wrocław University of Science and Technology (WUST), Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland;
| | | | - Arkadiusz J. Antończak
- Laser and Fiber Electronics Group, Faculty of Electrical Engineering, Wrocław University of Science and Technology, 50-370 Wrocław, Poland; (P.D.); (A.J.A.)
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Wu L, Chen S, Zhang T, Xiao X. Preparation of drug loading nanofibrous microsphere scaffolds modified by ethanolamine-modified polylactide. INT J POLYM MATER PO 2021. [DOI: 10.1080/00914037.2021.1951727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Linzhao Wu
- Department of Orthopedics Institute, Fuzhou Second Hospital Affiliated to Xiamen University, Fuzhou, China
| | - Shunyu Chen
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, China
| | - Tao Zhang
- Department of Orthopedics Institute, Fuzhou Second Hospital Affiliated to Xiamen University, Fuzhou, China
| | - Xiufeng Xiao
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, China
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Szustakiewicz K, Włodarczyk M, Gazińska M, Rudnicka K, Płociński P, Szymczyk-Ziółkowska P, Ziółkowski G, Biernat M, Sieja K, Grzymajło M, Jóźwiak P, Michlewska S, Trochimczuk AW. The Effect of Pore Size Distribution and l-Lysine Modified Apatite Whiskers (HAP) on Osteoblasts Response in PLLA/HAP Foam Scaffolds Obtained in the Thermally Induced Phase Separation Process. Int J Mol Sci 2021; 22:3607. [PMID: 33808501 PMCID: PMC8036975 DOI: 10.3390/ijms22073607] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 03/26/2021] [Accepted: 03/26/2021] [Indexed: 11/20/2022] Open
Abstract
In this research, we prepared foam scaffolds based on poly(l-lactide) (PLLA) and apatite whiskers (HAP) using thermally induced phase separation technique supported by the salt leaching process (TIPS-SL). Using sodium chloride having a size of (a) 150-315 μm, (b) 315-400 μm, and (c) 500-600 μm, three types of foams with different pore sizes have been obtained. Internal structure of the obtained materials has been investigated using SEM as well as μCT. The materials have been studied by means of porosity, density, and compression tests. As the most promising, the composite prepared with salt size of 500-600 μm was prepared also with the l-lysine modified apatite. The osteoblast hFOB 1.19 cell response for the scaffolds was also investigated by means of cell viability, proliferation, adhesion/penetration, and biomineralization. Direct contact cytotoxicity assay showed the cytocompatibility of the scaffolds. All types of foam scaffolds containing HAP whiskers, regardless the pore size or l-lysine modification induced significant stimulatory effect on the cal-cium deposits formation in osteoblasts. The PLLA/HAP scaffolds modified with l-lysine stimulated hFOB 1.19 osteoblasts proliferation. Compared to the scaffolds with smaller pores (150-315 µm and 315-400 µm), the PLLA/HAP foams with large pores (500-600 µm) promoted more effective ad-hesion of osteoblasts to the surface of the biomaterial.
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Affiliation(s)
- Konrad Szustakiewicz
- Department of Polymer Engineering and Technology, Faculty of Chemistry, Wrocław University of Science and Technology (WUST), Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland; (M.G.); (K.S.); (M.G.); (A.W.T.)
| | - Marcin Włodarczyk
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland; (M.W.); (K.R.); (P.P.)
| | - Małgorzata Gazińska
- Department of Polymer Engineering and Technology, Faculty of Chemistry, Wrocław University of Science and Technology (WUST), Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland; (M.G.); (K.S.); (M.G.); (A.W.T.)
| | - Karolina Rudnicka
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland; (M.W.); (K.R.); (P.P.)
| | - Przemysław Płociński
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland; (M.W.); (K.R.); (P.P.)
| | - Patrycja Szymczyk-Ziółkowska
- Centre for Advanced Manufacturing Technologies, Faculty of Mechanical Engineering, Wrocław University of Science and Technology (WUST), Łukasiewicza 5, 50-370 Wrocław, Poland; (P.S.-Z.); (G.Z.)
| | - Grzegorz Ziółkowski
- Centre for Advanced Manufacturing Technologies, Faculty of Mechanical Engineering, Wrocław University of Science and Technology (WUST), Łukasiewicza 5, 50-370 Wrocław, Poland; (P.S.-Z.); (G.Z.)
| | - Monika Biernat
- Department of Biomaterials, Ceramic and Concrete Division, Łukasiewicz Research Network Institute of Ceramics and Building Materials, 02-676 Warsaw, Poland;
| | - Katarzyna Sieja
- Department of Polymer Engineering and Technology, Faculty of Chemistry, Wrocław University of Science and Technology (WUST), Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland; (M.G.); (K.S.); (M.G.); (A.W.T.)
| | - Michał Grzymajło
- Department of Polymer Engineering and Technology, Faculty of Chemistry, Wrocław University of Science and Technology (WUST), Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland; (M.G.); (K.S.); (M.G.); (A.W.T.)
| | - Piotr Jóźwiak
- Department of Invertebrate Zoology and Hydrobiology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland;
| | - Sylwia Michlewska
- Laboratory of Microscopic Imaging and Specialized Biological Techniques, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland;
| | - Andrzej W. Trochimczuk
- Department of Polymer Engineering and Technology, Faculty of Chemistry, Wrocław University of Science and Technology (WUST), Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland; (M.G.); (K.S.); (M.G.); (A.W.T.)
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Li B, Ma X, Zhao G, Wang G, Zhang L, Gong J. Green fabrication method of layered and open-cell polylactide foams for oil-sorption via pre-crystallization and supercritical CO2-induced melting. J Supercrit Fluids 2020. [DOI: 10.1016/j.supflu.2020.104854] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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8
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Electrochemical DNA Sensor Based on the Copolymer of Proflavine and Azure B for Doxorubicin Determination. NANOMATERIALS 2020; 10:nano10050924. [PMID: 32397677 PMCID: PMC7279264 DOI: 10.3390/nano10050924] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 05/05/2020] [Accepted: 05/08/2020] [Indexed: 01/31/2023]
Abstract
A DNA sensor has been developed for the determination of doxorubicin by consecutive electropolymerization of an equimolar mixture of Azure B and proflavine and adsorption of native DNA from salmon sperm on a polymer film. Electrochemical investigation showed a difference in the behavior of individual drugs polymerized and their mixture. The use of the copolymer offered some advantages, i.e., a higher roughness of the surface, a wider range of the pH sensitivity of the response, a denser and more robust film, etc. The formation of the polymer film and its redox properties were studied using scanning electron microscopy and electrochemical impedance spectroscopy. For the doxorubicin determination, its solution was mixed with DNA and applied on the polymer surface. After that, charge transfer resistance was assessed in the presence of [Fe(CN)6]3-/4- as the redox probe. Its value regularly grew with the doxorubicin concentration in the range from 0.03 to 10 nM (limit of detection 0.01 nM). The DNA sensor was tested on the doxorubicin preparations and spiked samples mimicking blood serum. The recovery was found to be 98-106%. The DNA sensor developed can find application for the determination of drug residues in blood and for the pharmacokinetics studies.
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WITHDRAWN: Green Fabrication Method of Layered and Open-Cell Polylactide Foams for Oil-Sorption via Pre-Crystallization and Supercritical CO2-Induced Melting. J Supercrit Fluids 2020. [DOI: 10.1016/j.supflu.2020.104845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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The Comprehensive Approach to Preparation and Investigation of the Eu 3+ Doped Hydroxyapatite/poly(L-lactide) Nanocomposites: Promising Materials for Theranostics Application. NANOMATERIALS 2019; 9:nano9081146. [PMID: 31405106 PMCID: PMC6724068 DOI: 10.3390/nano9081146] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 08/05/2019] [Accepted: 08/06/2019] [Indexed: 12/13/2022]
Abstract
In response to the need for new materials for theranostics application, the structural and spectroscopic properties of composites designed for medical applications, received in the melt mixing process, were evaluated. A composite based on medical grade poly(L-lactide) (PLLA) and calcium hydroxyapatite (HAp) doped with Eu3+ ions was obtained by using a twin screw extruder. Pure calcium Hap, as well as the one doped with Eu3+ ions, was prepared using the precipitation method and then used as a filler. XRPD (X-ray Powder Diffraction) and IR (Infrared) spectroscopy were applied to investigate the structural properties of the obtained materials. DSC (Differential Scanning Calorimetry) was used to assess the Eu3+ ion content on phase transitions in PLLA. The tensile properties were also investigated. The excitation, emission spectra as well as decay time were measured to determine the spectroscopic properties. The simplified Judd–Ofelt (J-O) theory was applied and a detailed analysis in connection with the observed structural and spectroscopic measurements was made and described.
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Porfireva A, Vorobev V, Babkina S, Evtugyn G. Electrochemical Sensor Based on Poly(Azure B)-DNA Composite for Doxorubicin Determination. SENSORS (BASEL, SWITZERLAND) 2019; 19:E2085. [PMID: 31060322 PMCID: PMC6539792 DOI: 10.3390/s19092085] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 05/02/2019] [Accepted: 05/03/2019] [Indexed: 01/23/2023]
Abstract
A new voltammetric DNA sensor has been developed for doxorubicin determination on the platform of a glassy carbon electrode (GCE) covered with electropolymerized Azure B film and physically adsorbed native DNA. The redox properties of polymeric Azure B were monitored at various pH and scan rates. DNA application decreased the peak currents related to polymeric and monomeric forms of the dye, whereas incubation in doxorubicin solution partially restored the peaks in accordance with the drug and DNA concentration. The relative shift of the cathodic peak current caused by doxorubicin depended on the nominal DNA concentration and its application mode. In optimal conditions, the DNA sensor makes it possible to determine between 0.1 μM to 0.1 nM doxorubicin (limit of detection 7×10-11 M). The DNA sensor was tested on commercial doxorubicin formulations and on artificial samples the mimicked electrolyte content of human serum.
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Affiliation(s)
- Anna Porfireva
- A.M. Butlerov' Chemistry Institute of Kazan Federal University, 18 Kremlevskaya Street, Kazan 420008, Russia.
| | - Vyatseslav Vorobev
- Interdisciplinary Center of Analytical Microscopy of Kazan Federal University, 18 Kremlevskaya Street, Kazan 420008, Russia.
| | - Sofya Babkina
- Analytical Chemistry Department of the Lomonosov' Institute of Fine Chemical Technologies, MIREA - Russian Technological University, 86 Vernadsky Prospect, Moscow 119571, Russia.
| | - Gennady Evtugyn
- A.M. Butlerov' Chemistry Institute of Kazan Federal University, 18 Kremlevskaya Street, Kazan 420008, Russia.
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12
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Electrochemical DNA Sensors with Layered Polyaniline-DNA Coating for Detection of Specific DNA Interactions. SENSORS 2019; 19:s19030469. [PMID: 30678376 PMCID: PMC6387217 DOI: 10.3390/s19030469] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 01/21/2019] [Accepted: 01/22/2019] [Indexed: 12/19/2022]
Abstract
A DNA sensor has been proposed on the platform of glassy carbon electrode modified with native DNA implemented between two electropolymerized layers of polyaniline. The surface layer was assembled by consecutive stages of potentiodynamic electrolysis, DNA drop casting, and second electrolysis, which was required for capsulation of the DNA molecules and prevented their leaching into the solution. Surface layer assembling was controlled by cyclic voltammetry, electrochemical impedance spectroscopy, atomic force, and scanning electron microscopy. For doxorubicin measurement, the DNA sensor was first incubated in the Methylene blue solution that amplified signal due to DNA intercalation and competition with the doxorubicin molecules for the DNA binding sites. The charge transfer resistance of the inner layer interface decreased with the doxorubicin concentration in the range from 1.0 pM to 0.1 μM (LOD 0.6 pM). The DNA sensor was tested for the analysis of spiked artificial urine samples and showed satisfactory recovery in concentration range of 0.05⁻10 μM. The DNA sensor developed can find application in testing of antitumor drugs and some other DNA damaging factors.
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13
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Alizadeh-Osgouei M, Li Y, Wen C. A comprehensive review of biodegradable synthetic polymer-ceramic composites and their manufacture for biomedical applications. Bioact Mater 2018; 4:22-36. [PMID: 30533554 PMCID: PMC6258879 DOI: 10.1016/j.bioactmat.2018.11.003] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Revised: 11/19/2018] [Accepted: 11/19/2018] [Indexed: 12/12/2022] Open
Abstract
The application of various materials in biomedical procedures has recently experienced rapid growth. One area that is currently receiving significant attention from the scientific community is the treatment of a number of different types of bone-related diseases and disorders by using biodegradable polymer-ceramic composites. Biomaterials, the most common materials used to repair or replace damaged parts of the human body, can be categorized into three major groups: metals, ceramics, and polymers. Composites can be manufactured by combining two or more materials to achieve enhanced biocompatibility and biomechanical properties for specific applications. Biomaterials must display suitable properties for their applications, about strength, durability, and biological influence. Metals and their alloys such as titanium, stainless steel, and cobalt-based alloys have been widely investigated for implant-device applications because of their excellent mechanical properties. However, these materials may also manifest biological issues such as toxicity, poor tissue adhesion and stress shielding effect due to their high elastic modulus. To mitigate these issues, hydroxyapatite (HA) coatings have been used on metals because their chemical composition is similar to that of bone and teeth. Recently, a wide range of synthetic polymers such as poly (l-lactic acid) and poly (l-lactide-co-glycolide) have been studied for different biomedical applications, owing to their promising biocompatibility and biodegradability. This article gives an overview of synthetic polymer-ceramic composites with a particular emphasis on calcium phosphate group and their potential applications in tissue engineering. It is hoped that synthetic polymer-ceramic composites such as PLLA/HA and PCL/HA will provide advantages such as eliminating the stress shielding effect and the consequent need for revision surgery.
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Affiliation(s)
| | - Yuncang Li
- School of Engineering, RMIT University, Melbourne, Victoria, 3001, Australia
| | - Cuie Wen
- School of Engineering, RMIT University, Melbourne, Victoria, 3001, Australia
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14
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Hoai TT, Nga NK. Effect of pore architecture on osteoblast adhesion and proliferation on hydroxyapatite/poly(D,L) lactic acid-based bone scaffolds. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2018. [DOI: 10.1007/s13738-018-1365-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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15
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Xiao G, Yin H, Xu W, Lu Y. Modification and cytocompatibility of biocomposited porous PLLA/HA-microspheres scaffolds. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2016; 27:1462-75. [DOI: 10.1080/09205063.2016.1211000] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Guiyong Xiao
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Ji’nan, PR China
- School of Materials Science and Engineering, Shandong University, Ji’nan, PR China
- Suzhou Institute of Shandong University, Shandong University, Suzhou, PR China
| | - Han Yin
- Department of Orthopaedics, The People’s Hospital of Liaocheng, Liaocheng, PR China
| | - Wenhua Xu
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Ji’nan, PR China
- School of Materials Science and Engineering, Shandong University, Ji’nan, PR China
- Suzhou Institute of Shandong University, Shandong University, Suzhou, PR China
| | - Yupeng Lu
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Ji’nan, PR China
- School of Materials Science and Engineering, Shandong University, Ji’nan, PR China
- Suzhou Institute of Shandong University, Shandong University, Suzhou, PR China
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16
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Huang Y, Zhang X, Wu A, Xu H. An injectable nano-hydroxyapatite (n-HA)/glycol chitosan (G-CS)/hyaluronic acid (HyA) composite hydrogel for bone tissue engineering. RSC Adv 2016. [DOI: 10.1039/c5ra26160k] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The aim of the present study was to fabricate an injectable nano-hydroxyapatite (n-HA)/glycol chitosan (G-CS)/hyaluronic acid (HyA) composite hydrogel and investigate its potent application in bone tissue engineering.
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Affiliation(s)
- Yixing Huang
- Department of Orthopaedic Surgery
- Second Affiliated Hospital of Wenzhou Medical University
- Wenzhou
- P.R. China
| | - Xiaolei Zhang
- Department of Orthopaedic Surgery
- Second Affiliated Hospital of Wenzhou Medical University
- Wenzhou
- P.R. China
| | - Aimin Wu
- Department of Orthopaedic Surgery
- Second Affiliated Hospital of Wenzhou Medical University
- Wenzhou
- P.R. China
| | - Huazi Xu
- Department of Orthopaedic Surgery
- Second Affiliated Hospital of Wenzhou Medical University
- Wenzhou
- P.R. China
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17
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