1
|
Popescu-Pelin G, Ristoscu C, Duta L, Pasuk I, Stan GE, Stan MS, Popa M, Chifiriuc MC, Hapenciuc C, Oktar FN, Nicarel A, Mihailescu IN. Fish Bone Derived Bi-Phasic Calcium Phosphate Coatings Fabricated by Pulsed Laser Deposition for Biomedical Applications. Mar Drugs 2020; 18:md18120623. [PMID: 33297346 PMCID: PMC7762251 DOI: 10.3390/md18120623] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 12/03/2020] [Indexed: 11/16/2022] Open
Abstract
We report on new biomaterials with promising bone and cartilage regeneration potential, from sustainable, cheap resources of fish origin. Thin films were fabricated from fish bone-derived bi-phasic calcium phosphate targets via pulsed laser deposition with a KrF * excimer laser source (λ = 248 nm, τFWHM ≤ 25 ns). Targets and deposited nanostructures were characterized by SEM and XRD, as well as by Energy Dispersive X-ray (EDX) and FTIR spectroscopy. Films were next assessed in vitro by dedicated cytocompatibility and antimicrobial assays. Films were Ca-deficient and contained a significant fraction of β-tricalcium phosphate apart from hydroxyapatite, which could contribute to an increased solubility and an improved biocompatibility for bone regeneration applications. The deposited structures were biocompatible as confirmed by the lack of cytotoxicity on human gingival fibroblast cells, making them promising for fast osseointegration implants. Pulsed laser deposition (PLD) coatings inhibited the microbial adhesion and/or the subsequent biofilm development. A persistent protection against bacterial colonization (Escherichia coli) was demonstrated for at least 72 h, probably due to the release of the native trace elements (i.e., Na, Mg, Si, and/or S) from fish bones. Progress is therefore expected in the realm of multifunctional thin film biomaterials, combining antimicrobial, anti-inflammatory, and regenerative properties for advanced implant coatings and nosocomial infections prevention applications.
Collapse
Affiliation(s)
- Gianina Popescu-Pelin
- National Institute for Lasers, Plasma and Radiation Physics, RO-077125 Magurele, Romania; (G.P.-P.); (C.R.); (L.D.); (C.H.)
| | - Carmen Ristoscu
- National Institute for Lasers, Plasma and Radiation Physics, RO-077125 Magurele, Romania; (G.P.-P.); (C.R.); (L.D.); (C.H.)
| | - Liviu Duta
- National Institute for Lasers, Plasma and Radiation Physics, RO-077125 Magurele, Romania; (G.P.-P.); (C.R.); (L.D.); (C.H.)
| | - Iuliana Pasuk
- National Institute of Materials Physics, RO-077125 Magurele, Romania; (I.P.); (G.E.S.)
| | - George E. Stan
- National Institute of Materials Physics, RO-077125 Magurele, Romania; (I.P.); (G.E.S.)
| | - Miruna Silvia Stan
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, RO-050095 Bucharest, Romania;
| | - Marcela Popa
- Microbiology Department, Faculty of Biology, University of Bucharest, RO-060101 Bucharest, Romania; (M.P.); (M.C.C.)
- Research Institute of the University of Bucharest (ICUB), University of Bucharest, RO-050095 Bucharest, Romania
| | - Mariana C. Chifiriuc
- Microbiology Department, Faculty of Biology, University of Bucharest, RO-060101 Bucharest, Romania; (M.P.); (M.C.C.)
- Research Institute of the University of Bucharest (ICUB), University of Bucharest, RO-050095 Bucharest, Romania
- Academy of Romanian Scientists, Ilfov Street no. 3, RO-050711 Bucharest, Romania
| | - Claudiu Hapenciuc
- National Institute for Lasers, Plasma and Radiation Physics, RO-077125 Magurele, Romania; (G.P.-P.); (C.R.); (L.D.); (C.H.)
| | - Faik N. Oktar
- Department of Bioengineering, Faculty of Engineering, Goztepe Campus, University of Marmara, Kadikoy, 34722 Istanbul, Turkey;
- Center for Nanotechnology & Biomaterials Research, Goztepe Campus, University of Marmara, Kadikoy, 34722 Istanbul, Turkey
| | - Anca Nicarel
- Physics Department, University of Bucharest, RO-077125 Magurele, Romania;
| | - Ion N. Mihailescu
- National Institute for Lasers, Plasma and Radiation Physics, RO-077125 Magurele, Romania; (G.P.-P.); (C.R.); (L.D.); (C.H.)
- Correspondence: ; Tel.: +40-214-574-491
| |
Collapse
|
2
|
Cakmak AM, Unal S, Sahin A, Oktar FN, Sengor M, Ekren N, Gunduz O, Kalaskar DM. 3D Printed Polycaprolactone/Gelatin/Bacterial Cellulose/Hydroxyapatite Composite Scaffold for Bone Tissue Engineering. Polymers (Basel) 2020; 12:E1962. [PMID: 32872547 PMCID: PMC7570222 DOI: 10.3390/polym12091962] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 08/26/2020] [Accepted: 08/26/2020] [Indexed: 11/16/2022] Open
Abstract
Three-dimensional (3D) printing application is a promising method for bone tissue engineering. For enhanced bone tissue regeneration, it is essential to have printable composite materials with appealing properties such as construct porous, mechanical strength, thermal properties, controlled degradation rates, and the presence of bioactive materials. In this study, polycaprolactone (PCL), gelatin (GEL), bacterial cellulose (BC), and different hydroxyapatite (HA) concentrations were used to fabricate a novel PCL/GEL/BC/HA composite scaffold using 3D printing method for bone tissue engineering applications. Pore structure, mechanical, thermal, and chemical analyses were evaluated. 3D scaffolds with an ideal pore size (~300 µm) for use in bone tissue engineering were generated. The addition of both bacterial cellulose (BC) and hydroxyapatite (HA) into PCL/GEL scaffold increased cell proliferation and attachment. PCL/GEL/BC/HA composite scaffolds provide a potential for bone tissue engineering applications.
Collapse
Affiliation(s)
- Abdullah M. Cakmak
- Department of Bioengineering, Faculty of Engineering, Marmara University, 34722 Istanbul, Turkey; (A.M.C.); (S.U.); (F.N.O.)
- Center for Nanotechnology & Biomaterials Application and Research (NBUAM), Marmara University, 34722 Istanbul, Turkey; (M.S.); (N.E.)
| | - Semra Unal
- Department of Bioengineering, Faculty of Engineering, Marmara University, 34722 Istanbul, Turkey; (A.M.C.); (S.U.); (F.N.O.)
- Center for Nanotechnology & Biomaterials Application and Research (NBUAM), Marmara University, 34722 Istanbul, Turkey; (M.S.); (N.E.)
- Institute of Neurological Sciences, Marmara University, 34722 Istanbul, Turkey
| | - Ali Sahin
- Department of Biochemistry, School of Medicine/Genetic and Metabolic Diseases Research and Investigation Center, Marmara University, 34722 Istanbul, Turkey;
| | - Faik N. Oktar
- Department of Bioengineering, Faculty of Engineering, Marmara University, 34722 Istanbul, Turkey; (A.M.C.); (S.U.); (F.N.O.)
- Center for Nanotechnology & Biomaterials Application and Research (NBUAM), Marmara University, 34722 Istanbul, Turkey; (M.S.); (N.E.)
| | - Mustafa Sengor
- Center for Nanotechnology & Biomaterials Application and Research (NBUAM), Marmara University, 34722 Istanbul, Turkey; (M.S.); (N.E.)
- Department of Metallurgy and Materials Engineering, Faculty of Technology, Marmara University, 34722 Istanbul, Turkey
| | - Nazmi Ekren
- Center for Nanotechnology & Biomaterials Application and Research (NBUAM), Marmara University, 34722 Istanbul, Turkey; (M.S.); (N.E.)
- Department of Electrical and Electronics Engineering, Faculty of Technology, Marmara University, 34722 Istanbul, Turkey
| | - Oguzhan Gunduz
- Center for Nanotechnology & Biomaterials Application and Research (NBUAM), Marmara University, 34722 Istanbul, Turkey; (M.S.); (N.E.)
- Department of Metallurgy and Materials Engineering, Faculty of Technology, Marmara University, 34722 Istanbul, Turkey
| | - Deepak M. Kalaskar
- UCL Division of Surgery and Interventional Sciences, Royal Free Hospital Campus Rowland Hill Street, London NW3 2PF, UK
| |
Collapse
|
3
|
Topsakal A, Ekren N, Kilic O, Oktar FN, Mahirogullari M, Ozkan O, Sasmazel HT, Turk M, Bogdan IM, Stan GE, Gunduz O. Synthesis and characterization of antibacterial drug loaded β-tricalcium phosphate powders for bone engineering applications. J Mater Sci Mater Med 2020; 31:16. [PMID: 31965360 DOI: 10.1007/s10856-019-6356-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 12/28/2019] [Indexed: 06/10/2023]
Abstract
Powders of β-tricalcium phosphate [β-TCP, β-Ca3(PO4)2] and composite powders of β-TCP and polyvinyl alcohol (PVA) were synthesized by using wet precipitation methods. First, the conditions for the preparation of single phase β-TCP have been delineated. In the co-precipitation procedure, calcium nitrate and diammonium hydrogen phosphate were used as calcium and phosphorous precursors, respectively. The pH of the system was varied in the range 7-11 by adding designed amounts of ammonia solution. The filtered cakes were desiccated at 80 °C and subsequently calcined at different temperatures in the range between 700-1100 °C. Later on, rifampicin form II was used to produce drug-loaded β-TCP and PVA/β-TCP powders. All the synthesized materials have been characterized from morphological (by scanning electron microscopy) and structural-chemical (by X-ray diffraction and Fourier transform infrared spectroscopy) point of view. The drug loading capacity of the selected pure β-TCP powder has been assessed. The biological performance (cytocompatibility in fibroblast cell culture and antibacterial efficacy against Escherichia coli and Staphylococcus aureus) has been tested with promising results. Application perspectives of the designed drug-bioceramic-polymer blends are advanced and discussed.
Collapse
Affiliation(s)
- Aysenur Topsakal
- Center for Nanotechnology and Biomaterials Application and Research (NBUAM), Marmara University, 34722, Istanbul, Turkey
- Department of Metallurgical and Materials Engineering, Faculty of Technology, Marmara University, 34722, Istanbul, Turkey
| | - Nazmi Ekren
- Center for Nanotechnology and Biomaterials Application and Research (NBUAM), Marmara University, 34722, Istanbul, Turkey
- Department of Electric and Electronic Engineering, Faculty of Technology, Marmara University, 34722, Istanbul, Turkey
| | - Osman Kilic
- Center for Nanotechnology and Biomaterials Application and Research (NBUAM), Marmara University, 34722, Istanbul, Turkey
- Department of Electric and Electronic Engineering, Faculty of Engineering, Marmara University, 34722, Istanbul, Turkey
| | - Faik N Oktar
- Center for Nanotechnology and Biomaterials Application and Research (NBUAM), Marmara University, 34722, Istanbul, Turkey
- Department of Bioengineering, Faculty of Engineering, Marmara University, 34722, Istanbul, Turkey
| | - Mahir Mahirogullari
- Center for Nanotechnology and Biomaterials Application and Research (NBUAM), Marmara University, 34722, Istanbul, Turkey
- Department of Orthopedics and Traumatology, Memorial Hospital, 34390, Istanbul, Turkey
| | - Ozan Ozkan
- Bioengineering Division, Graduate School of Science and Engineering, Hacettepe University, Beyte, 06800, Ankara, Turkey
| | - Hilal Turkoglu Sasmazel
- Metallurgical and Materials Engineering Department, Faculty of Engineering, Atilim University, Incek, 06830, Ankara, Turkey
| | - Mustafa Turk
- Bioengineering Division, Engineering Faculty, Kirikkale University, Yahsihan, 71450, Kirikkale, Turkey
| | - Iuliana M Bogdan
- National Institute of Materials Physics, 077125, Magurele, Ilfov, Romania
| | - George E Stan
- National Institute of Materials Physics, 077125, Magurele, Ilfov, Romania
| | - Oguzhan Gunduz
- Center for Nanotechnology and Biomaterials Application and Research (NBUAM), Marmara University, 34722, Istanbul, Turkey.
- Department of Metallurgical and Materials Engineering, Faculty of Technology, Marmara University, 34722, Istanbul, Turkey.
| |
Collapse
|
4
|
Kalkandelen C, Ulag S, Ozbek B, Eroglu GO, Ozerkan D, Kuruca SE, Oktar FN, Sengor M, Gunduz O. 3D Printing of Gelatine/Alginate/β‐Tricalcium Phosphate Composite Constructs for Bone Tissue Engineering. ChemistrySelect 2019. [DOI: 10.1002/slct.201902878] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Cevriye Kalkandelen
- Vocational School of Technical SciencesIstanbul University-CerrahpasaHadimkoy CampusCenter for Nanotechnology & Biomaterials Application and ResearchMarmara UniversityGoztepe Campus 34722 Istanbul Turkey
| | - Songul Ulag
- Center for Nanotechnology & Biomaterials Application and ResearchMarmara UniversityDepartment of Metallurgical and Materials EngineeringMarmara UniversityGoztepe Campus 34722 Istanbul Turkey
| | - Burak Ozbek
- Center for Nanotechnology & Biomaterials Application and ResearchMarmara UniversityDepartment of Metallurgical and Materials EngineeringMarmara UniversityGoztepe Campus 34722 Istanbul Turkey
| | - Gunes O. Eroglu
- Department of Molecular MedicineIstanbul UniversityTurkey Capa Campus 34093 Istanbul Turkey
| | - Dilsad Ozerkan
- Faculty of Engineering & ArchitectureKastamonu UniversityTurkey Kastamonu Campus 37150 Kastamonu Turkey
| | - Serap E. Kuruca
- Istanbul Faculty of PhysiologyIstanbul University, IstanbulTurkey Capa Campus 34093 Istanbul Turkey
| | - Faik N. Oktar
- Center for Nanotechnology & Biomaterials Application and ResearchMarmara UniversityDepartment of Metallurgical and Materials EngineeringMarmara UniversityGoztepe Campus 34722 Istanbul Turkey
- Center for Nanotechnology & Biomaterials Application and Research (NBUAM)Marmara UniversityDepartment of BioengineeringGoztepe Campus 34722 Istanbul Turkey
| | - Mustafa Sengor
- Department of Mechanical EngineeringFaculty of EngineeringBogazici UniversityNorth Campus 34722 Istanbul Turkey
| | - Oguzhan Gunduz
- Center for Nanotechnology & Biomaterials Application and ResearchMarmara UniversityDepartment of Metallurgical and Materials EngineeringMarmara UniversityGoztepe Campus 34722 Istanbul Turkey
- Center for Nanotechnology & Biomaterials Application and Research (NBUAM)Marmara UniversityDepartment of Metallurgical and Materials EngineeringFaculty of TechnologyGoztepe CampusMarmara University 34722 Istanbul Turkey
| |
Collapse
|
5
|
Ege ZR, Akan A, Oktar FN, Lin CC, Kuruca DS, Karademir B, Sahin YM, Erdemir G, Gunduz O. Indocyanine green based fluorescent polymeric nanoprobes for in vitro imaging. J Biomed Mater Res B Appl Biomater 2019; 108:538-554. [PMID: 31087780 DOI: 10.1002/jbm.b.34410] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 03/21/2019] [Accepted: 04/25/2019] [Indexed: 12/11/2022]
Abstract
Indocyanine green (ICG) provides an advantage in the imaging of deep tumors as it can reach deeper location without being absorbed in the upper layers of biological tissues in the wavelengths, which named "therapeutic window" in the tissue engineering. Unfortunately, rapid elimination and short-term stability in aqueous media limited its use as a fluorescence probe for the early detection of cancerous tissue. In this study, stabilization of ICG was performed by encapsulating ICG molecules into the biodegradable polymer composited with poly(l-lactic acid) and poly(ε-caprolactone) via a simple one-step multiaxial electrospinning method. Different types of coaxial and triaxial structure groups were performed and compared with single polymer only groups. Confocal microscopy was used to image the encapsulated ICG (1 mg/mL) within electrospun nanofibers and in vitro ICG uptake by MIA PaCa-2 pancreatic cancer cells. Stability of encapsulated ICG is demonstrated by the in vitro sustainable release profile in PBS (pH = 4 and 7) up to 21 days. These results suggest the potential of the ability of internalization and accommodation of ICG into the pancreatic cell cytoplasm from in vitro implanted ICG-encapsulated multiaxial nanofiber mats. ICG-encapsulated multilayer nanofibers may be promising for the local sustained delivery system to eliminate loss of dosage caused by direct injection of ICG-loaded nanoparticles in systemic administration.
Collapse
Affiliation(s)
- Zeynep R Ege
- Center for Nanotechnology and Biomaterials Applied & Research, Marmara University, Istanbul, Turkey
- Department of Biomedical Engineering, Institute of Science, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Aydin Akan
- Department of Biomedical Engineering, Faculty of Engineering and Architecture, Izmir Katip Celebi University, Izmir, Turkey
| | - Faik N Oktar
- Center for Nanotechnology and Biomaterials Applied & Research, Marmara University, Istanbul, Turkey
- Department of Bioengineering, Faculty of Engineering, Marmara University, Istanbul, Turkey
| | - Chi C Lin
- Department of Chemical and Materials Engineering, Tunghai University, Taichung, Taiwan
| | - Durdane S Kuruca
- Department of Physiology, Faculty of Medicine, University of Istanbul, Istanbul, Turkey
| | - Betul Karademir
- Department of Biochemistry, Faculty of Medicine, Marmara University, Istanbul, Turkey
| | - Yesim M Sahin
- Department of Biomedical Engineering, Faculty of Engineering and Architecture, Arel University, Istanbul, Turkey
| | - Gokce Erdemir
- Faculty of Medicine, Institute of Aziz Sancar Experimental Medicine Research, Istanbul University, Istanbul, Turkey
| | - Oguzhan Gunduz
- Center for Nanotechnology and Biomaterials Applied & Research, Marmara University, Istanbul, Turkey
- Department of Metallurgical and Materials Engineering, Faculty of Technology, Marmara University, Istanbul, Turkey
| |
Collapse
|
6
|
Kalkandelen C, Ozbek B, Ergul NM, Akyol S, Moukbil Y, Oktar FN, Ekren N, Kılıc O, Kılıc B, Gunduz O. Effect of temperature, viscosity and surface tension on gelatine structures produced by modified 3D printer. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1757-899x/293/1/012001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
7
|
Unal S, Ekren N, Sengil AZ, Oktar FN, Irmak S, Oral O, Sahin YM, Kilic O, Agathopoulos S, Gunduz O. Synthesis, characterization, and biological properties of composites of hydroxyapatite and hexagonal boron nitride. J Biomed Mater Res B Appl Biomater 2017; 106:2384-2392. [PMID: 29168913 DOI: 10.1002/jbm.b.34046] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Revised: 09/29/2017] [Accepted: 10/16/2017] [Indexed: 11/08/2022]
Abstract
Hydroxyapatite (HA), obtained from bovine bones, was successfully reinforced with hexagonal boron nitrite (h-BN). h-BN/HA composites, with BN content up to 1.5 wt %, were sintered at various temperatures between 1000 and 1300°C, in air. Well-sintered samples were obtained after sintering at 1200 and 1300°C. The presence of h-BN contributed to dense, fine, and well-crystallized microstructure. The results of X-ray diffraction analysis and FT-IR spectroscopy showed that the produced composites comprised biphasic β-TCP/HCA (HCA: carbonate partially substituted HA). High values of mechanical properties were achieved, namely compression strength 155 MPa for the sample 0.5% h-BN/HA and Vickers microhardness of 716 HV for the samples 1.5% h-BN/HA, both sintered at 1300°C. U2OS human bone osteosarcoma proliferation and cell viability showed no adverse effect in the presence of h-BN/HA, suggesting the potential use of the produced materials as safe biomaterials in bone tissue engineering. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 2384-2392, 2018.
Collapse
Affiliation(s)
- Semra Unal
- Department of Bioengineering, Faculty of Engineering, Marmara University, Istanbul, Turkey.,Advanced Nanomaterials Research Laboratory, Marmara University, Istanbul, Turkey
| | - Nazmi Ekren
- Advanced Nanomaterials Research Laboratory, Marmara University, Istanbul, Turkey.,Department of Electrical and Electronic Engineering, Faculty of Technology, Marmara University, Istanbul, Turkey
| | - Ahmet Z Sengil
- Advanced Nanomaterials Research Laboratory, Marmara University, Istanbul, Turkey.,Department of Medical Microbiology, School of Medicine, Medipol University, Istanbul, Turkey
| | - Faik N Oktar
- Department of Bioengineering, Faculty of Engineering, Marmara University, Istanbul, Turkey.,Advanced Nanomaterials Research Laboratory, Marmara University, Istanbul, Turkey
| | - Ster Irmak
- Department of Nutrition and Dietetics, School of Health Sciences, Istanbul Bilgi University, Istanbul, Turkey
| | - Ozlem Oral
- Sabanci University Nanotechnology Research and Application Center, EFSUN-Center of Excellence for Functional Surfaces and Interfaces for Nano Diagnostic, Istanbul, Turkey
| | - Yesim M Sahin
- Department of Biomedical Engineering, Istanbul Arel University, Istanbul, Turkey
| | - Osman Kilic
- Advanced Nanomaterials Research Laboratory, Marmara University, Istanbul, Turkey.,Department of Electrical and Electronic Engineering, Faculty of Engineering, Marmara University, Istanbul, Turkey
| | - Simeon Agathopoulos
- Department of Materials Science and Engineering, University of Ioannina, Ioannina, Greece
| | - Oguzhan Gunduz
- Advanced Nanomaterials Research Laboratory, Marmara University, Istanbul, Turkey.,Department of Metallurgy and Materials Engineering, Faculty of Technology, Marmara University, Istanbul, Turkey
| |
Collapse
|
8
|
Bozkurt Y, Sahin A, Sunulu A, Aydogdu MO, Altun E, Oktar FN, Ekren N, Gunduz O. Electrospun Nanocomposite Materials, A Novel Synergy of Polyurethane and Bovine Derived Hydroxyapatite. ACTA ACUST UNITED AC 2017. [DOI: 10.1088/1742-6596/829/1/012015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
9
|
Yetmez M, Erkmen ZE, Kalkandelen C, Ficai A, Oktar FN. Sintering effects of mullite-doping on mechanical properties of bovine hydroxyapatite. Mater Sci Eng C Mater Biol Appl 2017; 77:470-475. [PMID: 28532054 DOI: 10.1016/j.msec.2017.03.290] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 11/16/2016] [Accepted: 03/30/2017] [Indexed: 11/24/2022]
Abstract
In this study, sintering effects on microstructural behavior of bovine derived hydroxyapatite doped with powder mullite are considered in the temperature range between 1000°C and 1300°C. Results show that maximum values of both compressive strength and microhardness are achieved in the samples sintered at 1200°C for all mullite additions of 5, 7.5, 10 and 12.5wt%. Moreover, above 1000°C, decomposition of HA and new phase formations such as whitlockite and gehlenite play a major role in both compressive strength and microhardness properties which increase up to 10wt% mullite reinforcement.
Collapse
Affiliation(s)
- M Yetmez
- Department of Mechanical Engineering, Bulent Ecevit University, 67100 Zonguldak, Turkey.
| | - Z E Erkmen
- Department of Metallurgical and Materials Engineering, Marmara University, 34722 Istanbul, Turkey
| | - C Kalkandelen
- Biomedical Engineering Program, Graduate School of Natural and Applied Sciences, Istanbul University, 34320 Istanbul, Turkey; Vocational School of Technical Sciences, Biomedical Devices Technology Department, Istanbul University, 34320 Istanbul, Turkey
| | - A Ficai
- Faculty of Applied Chemistry and Material Science, Politechnica University of Bucharest, Bucharest, Romania
| | - F N Oktar
- Department of Bioengineering, Faculty of Engineering, Marmara University, 34722 Istanbul, Turkey; Advanced Nanomaterials Research Laboratory, Marmara University, 34722 Istanbul, Turkey
| |
Collapse
|
10
|
Komur B, Bayrak F, Ekren N, Eroglu MS, Oktar FN, Sinirlioglu ZA, Yucel S, Guler O, Gunduz O. Starch/PCL composite nanofibers by co-axial electrospinning technique for biomedical applications. Biomed Eng Online 2017; 16:40. [PMID: 28356126 PMCID: PMC5372289 DOI: 10.1186/s12938-017-0334-y] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Accepted: 03/21/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND In this study, starch and polycaprolactone (PCL), composite nanofibers were fabricated by co-axial needle electrospinning technique. Processing parameters such as polymer concentration, flow rate and voltage had a marked influence on the composite fiber diameter. Fourier transform infrared spectroscopy, scanning electron microscopy (SEM), mechanical and physical properties (such as density, viscosity and electrical conductivity) of the composite fibres were evaluated. Moreover, a cell culture test was performed in order to determine their cytotoxicity for wound dressing application. RESULTS The effect of starch ratio in the solution on the properties and morphological structure of the fibers produced was presented. With lower starch concentration values, the fibers have greater ultimate tensile strength characteristic (mostly 4 and 5 wt%). According to SEM results, it can be figured out that the nanofibers fabricated have good spinnability and morphology. The mean diameter of the fibers is about 150 nm. According to results of cell culture study, the finding can be determined that the increase of starch in the fiber also increases the cell viability. CONCLUSIONS Composite nanofibers of starch/PCL have been prepared using a co-axial needle electrospinning technique. PCL was successfully encapsulated within starch. Fiber formation was observed for different ratio of starch. With several test, analysis and measurement performed, some important parameters such as quality and effectuality of each fiber obtained for wound dressing applications were discussed in detail.
Collapse
Affiliation(s)
- B Komur
- Kanuni Sultan Suleyman Training and Research Hospital, Turgut Ozal Street No.1, Halkalı, Kucukcekmece, 34303, Istanbul, Turkey
| | - F Bayrak
- Advanced Nanomaterials Research Laboratory, Department of Metallurgical and Materials Engineering, Marmara University, Goztepe Campus, 34722, Istanbul, Turkey.,Department of Metallurgical and Materials Engineering, Institute of Pure and Applied Sciences, Marmara University, Goztepe Campus, 34722, Istanbul, Turkey
| | - N Ekren
- Advanced Nanomaterials Research Laboratory, Department of Metallurgical and Materials Engineering, Marmara University, Goztepe Campus, 34722, Istanbul, Turkey.,Department of Electrical and Electronics Engineering, Faculty of Technology, Marmara University, Goztepe Campus, 34722, Istanbul, Turkey
| | - M S Eroglu
- Department of Chemical Engineering, Faculty of Engineering, Marmara University, Goztepe Campus, 34722, Istanbul, Turkey
| | - F N Oktar
- Advanced Nanomaterials Research Laboratory, Department of Metallurgical and Materials Engineering, Marmara University, Goztepe Campus, 34722, Istanbul, Turkey.,Department of Bioengineering, Faculty of Engineering, Marmara University, Goztepe Campus, 34722, Istanbul, Turkey
| | | | - S Yucel
- Department of Bioengineering, Faculty of Chemical and Metallurgical Engineering, Yıldız Technical University, Davutpasa Campus, 34220, Istanbul, Turkey
| | - O Guler
- Department of Orthopedics and Traumatology, Faculty of Medicine, Istanbul Medipol University, Halic Campus, 34083, Istanbul, Turkey
| | - O Gunduz
- Advanced Nanomaterials Research Laboratory, Department of Metallurgical and Materials Engineering, Marmara University, Goztepe Campus, 34722, Istanbul, Turkey. .,Department of Metallurgical and Materials Engineering, Faculty of Technology, Marmara University, Goztepe Campus, 34722, Istanbul, Turkey.
| |
Collapse
|
11
|
Oktar FN, Yetmez M, Ficai D, Ficai A, Dumitru F, Pica A. Molecular mechanism and targets of the antimicrobial activity of metal nanoparticles. Curr Top Med Chem 2016; 15:1583-8. [PMID: 25877090 DOI: 10.2174/1568026615666150414141601] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Revised: 01/17/2015] [Accepted: 01/29/2015] [Indexed: 11/22/2022]
Abstract
The emergence of multi-resistant bacteria to drugs is recognized as a major cause of the increasing number of deaths in hospitals. Killing these bacteria require multiple expensive drugs that can have side effects. Metal nanoparticles may provide a new strategy to combat them. Due the antimicrobial and antiviral properties, nanoparticles (NPs) have outstanding biological properties that can be handled properly for desired applications. This review presents antibacterial and antiviral activity of metal NPs, including the molecular mechanisms by which NPs annihilate multidrug-resistant bacteria.
Collapse
Affiliation(s)
| | | | | | | | | | - Alexandra Pica
- Politehnica University of Bucharest, Centre of Micro and Nanotechnology; 1-7 Polizu St., 011061, Bucharest, Romania.
| |
Collapse
|
12
|
Sahin YM, Yetmez M, Oktar FN, Gunduz O, Agathopoulos S, Andronescu E, Ficai D, Sonmez M, Ficai A. Nanostructured biomaterials with antimicrobial properties. Curr Med Chem 2015; 21:3391-404. [PMID: 24606500 DOI: 10.2174/0929867321666140304104950] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 12/12/2013] [Accepted: 12/19/2013] [Indexed: 11/22/2022]
Abstract
The present review is intended to bring together the main advances in the field of nanostructured biomaterials with antimicrobial properties. It is generally accepted that the discovery of antibiotics was of great importance but, nowadays new antimicrobial agents are needed and/or their better administration routes. The limitation of the use of antibiotics is essential because of the following reasons: the excessive use of antibiotics leads to the development of antibiotic resistant microorganisms; there are some alternatives for many types of infections, many of these alternatives being less toxic and do not lead to antibiotic similar resistance. In compliance with the above presented, the use of antibiotic is recommended to be eliminated (when alternatives are available) or to be reduced by using combined therapy when possible or to administrate these drugs through targeted or loco-regional drug delivery systems.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | - Anton Ficai
- Biomedical Engineering Dept., Faculty of Engineering, Istanbul Arel University, Istanbul, Turkey.
| |
Collapse
|
13
|
Carvalho AL, Faria PEP, Grisi MFM, Souza SLS, Taba MJ, Palioto DB, Novaes ABJ, Fraga AF, Ozyegin LS, Oktar FN, Salata LA. Effects of granule size on the osteoconductivity of bovine and synthetic hydroxyapatite: a histologic and histometric study in dogs. J ORAL IMPLANTOL 2007; 33:267-76. [PMID: 17987858 DOI: 10.1563/1548-1336(2007)33[267:eogsot]2.0.co;2] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Two bovine hydroxyapatites (BHAs), one with granule size of 150 to 200 microm and one with granule size of 300 to 329 micro, and 2 synthetic hydroxyapatites (SHAs), with granule size of 150 and 300 microm, respectively, were compared for effectiveness in repairing circumferential bone defects in dogs. The hydroxyapatites (HAs) were characterized through powder x-ray diffraction (XRD) analysis and scanning electron microscopy (SEM). Three trephined bone defects (5.0 mm wide x 4 mm long) were created in the humeruses of 8 dogs. In a random manner, the defects on each side were treated with either BHA with small granules (BHA[s]), BHA with large granules (BHA[L]), SHA with small granules (SHA[s]), SHA with large granules (SHA[L]), or left to heal unaided (bilateral control). Four dogs were sacrificed after 6 and 12 postoperative weeks, respectively. Ground sections of each defect were submitted to histologic and histomorphometric analysis (percentage of area occupied by bone, bone marrow, and biomaterial). As a rule, the HA granules exhibited direct bone contact, regardless of the origin and the size of the granules. Control sites were related and had an increased amount of connective tissue infiltration. At 12 weeks, BHA(s) exhibited improved bone formation compared with SHA(s) and SHA(L). The SHA(s) delivered reduced amounts of bone compared with the remaining groups (control included). The area of bone measured in BHA(s) sites was significantly higher at 12 weeks than 6 weeks. The XRD revealed the tested HA samples to be highly crystalline, while BHA appeared with rougher surface at SEM analysis. The BHA(s) performed better than the SHA(s) and SHA(L), as assessed by the amount of bone measured in both implantation sites at 12 weeks. The BHA's material characteristic itself rather than granules size accounted for the distinctive biological behavior. The increased roughness of the BHAs' surface, as assessed through SEM, seemed to benefit the osteoconduction process.
Collapse
Affiliation(s)
- Alexandre L Carvalho
- Department of Oral and Maxillofacial Surgery and Periodontics, Faculty of Dentistry of Ribeirão Preto, The University of São Paulo at Ribeirão Preto, SP, Brazil
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
14
|
|
15
|
Oktar FN, Yetmez M, Agathopoulos S, Lopez Goerne TM, Goller G, Peker I, Ipeker I, Ferreira JMF. Bond-coating in plasma-sprayed calcium-phosphate coatings. J Mater Sci Mater Med 2006; 17:1161-71. [PMID: 17122932 DOI: 10.1007/s10856-006-0544-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2004] [Accepted: 01/27/2006] [Indexed: 05/12/2023]
Abstract
The influence of bond-coating on the mechanical properties of plasma-spray coatings of hydroxyatite on Ti was investigated. Plasma-spray powder was produced from human teeth enamel and dentine. Before processing the main apatite coating, a very thin layer of Al2O3/TiO2 was applied on super clean and roughened, by Al2O3 blasting, Ti surface as bond-coating. The experimental results showed that bond-coating caused significant increase of the mechanical properties of the coating layer: In the case of the enamel powder from 6.66 MPa of the simple coating to 9.71 MPa for the bond-coating and in the case of the dentine powder from 6.27 MPa to 7.84 MPa, respectively. Both tooth derived powders feature high thermal stability likely due to their relatively high content of fluorine. Therefore, F-rich apatites, such those investigated in this study, emerge themselves as superior candidate materials for calcium phosphate coatings of producing medical devices. The methods of apatite powder production and shaping optimization of powder particles are both key factors of a successful coating. The methods used in this study can be adopted as handy, inexpensive and reliable ways to produce high quality of powders for plasma spray purposes.
Collapse
Affiliation(s)
- F N Oktar
- Department of Industrial Engineering, School of Engineering, Marmara University, Goztepe Campus, Ziverbey, 34722, Kadikoy, Istanbul, Turkey.
| | | | | | | | | | | | | | | |
Collapse
|
16
|
Rocha JHG, Lemos AF, Agathopoulos S, Valério P, Kannan S, Oktar FN, Ferreira JMF. Scaffolds for bone restoration from cuttlefish. Bone 2005; 37:850-7. [PMID: 16153899 DOI: 10.1016/j.bone.2005.06.018] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2005] [Revised: 06/30/2005] [Accepted: 06/30/2005] [Indexed: 11/26/2022]
Abstract
Scaffolds of pure hydroxyapatite suitable for either direct clinical use or tissue-engineering applications were successfully produced via hydrothermal transformation of aragonite, obtained from fresh cuttlefish bones, at 200 degrees C followed by sintering. Beyond low production cost, worldwide availability and natural-biological origin of raw materials, the produced scaffolds have ideal pore size and interconnectivity features suitable for supporting biological activities, such as bone tissue growth and vascularization. Bioactivity in vitro tests were excellent: (a) rapid and pronounced formation of hydroxyapatite occurred when the scaffolds were immersed in simulated body fluid (SBF), and (b) outstanding proliferation of osteoblasts was registered. The produced scaffolds can be machined and shaped very easily at any stage of processing. Therefore, these ceramic scaffolds can satisfy both bioactivity demands and the requirements for shaping of tailor-made individualized implants, especially for randomly damaged bones.
Collapse
Affiliation(s)
- J H G Rocha
- Department of Ceramics and Glass Engineering, University of Aveiro, CICECO, 3810-193 Aveiro, Portugal
| | | | | | | | | | | | | |
Collapse
|
17
|
Oktar FN, Kesenci K, Pişkin E. Characterization of processed tooth hydroxyapatite for potential biomedical implant applications. Artif Cells Blood Substit Immobil Biotechnol 1999; 27:367-79. [PMID: 10427420 DOI: 10.3109/10731199909117706] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
In this study hydroxyapatite (HA) (100-150 microns) derived from freshly-extracted human teeth in laboratory conditions was investigated. Scanning electron microscope (SEM), energy dispersive x-ray spectroscopy (EDXS), wet chemical, ion chromatographic peak method (ICP), atomic absorption, x-ray diffraction and infra-red (IR) were performed separately for HA obtained from dentine and enamel. This naturally derived HA did not differ from synthetic ones. Its production was simple when compared with other methods. Processed tooth HA could safely be used in animal subjects prior to human studies as a graft material after biocompatibility studies fully conducted.
Collapse
Affiliation(s)
- F N Oktar
- Bosphorus University, Biomedical Engineering Institute, Instanbul, Turkey
| | | | | |
Collapse
|