1
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Sharma MB, Kap Ö, Abdelmohsen HAM, Ashton MD, Harper GR, Firlak M, Aaltonen JE, Bolland KA, Bragg R, Deeley S, Francis E, Kazi N, Mapley BL, Oikonomou V, Aljohani AD, Cheneler D, Kilic V, Horzum N, Hardy JG. Poly(2-Hydroxyethyl Methacrylate) Hydrogel-Based Microneedles for Metformin Release. Glob Chall 2023; 7:2300002. [PMID: 37635699 PMCID: PMC10448145 DOI: 10.1002/gch2.202300002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 05/21/2023] [Indexed: 08/29/2023]
Abstract
The release of metformin, a drug used in the treatment of cancer and diabetes, from poly(2-hydroxyethyl methacrylate), pHEMA, hydrogel-based microneedle patches is demonstrated in vitro. Tuning the composition of the pHEMA hydrogels enables preparation of robust microneedle patches with mechanical properties such that they would penetrate skin (insertion force of a single microneedle to be ≈40 N). Swelling experiments conducted at 20, 35, and 60 °C show temperature-dependent degrees of swelling and diffusion kinetics. Drug release from the pHEMA hydrogel-based microneedles is fitted to various models (e.g., zero order, first order, second order). Such pHEMA microneedles have potential application for transdermal delivery of metformin for the treatment of aging, cancer, diabetes, etc.
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Affiliation(s)
- Manoj B. Sharma
- Department of ChemistryLancaster UniversityLancasterLA1 4YBUK
- School of EngineeringLancaster UniversityLancasterLA1 4YWUK
| | - Özlem Kap
- Department of Engineering SciencesIzmir Katip Celebi UniversityIzmir35620Turkey
| | - Hend A. M. Abdelmohsen
- Department of ChemistryLancaster UniversityLancasterLA1 4YBUK
- Department of Pharmaceutics and Industrial PharmacyFaculty of PharmacyAin Shams UniversityAfrican Union Organization StreetAbbassiaCairo11566Egypt
| | - Mark D. Ashton
- Department of ChemistryLancaster UniversityLancasterLA1 4YBUK
| | - Garry R. Harper
- Department of ChemistryLancaster UniversityLancasterLA1 4YBUK
| | - Melike Firlak
- Department of ChemistryLancaster UniversityLancasterLA1 4YBUK
- Department of ChemistryGebze Technical UniversityGebze41400Turkey
| | | | | | - Ryan Bragg
- Department of ChemistryLancaster UniversityLancasterLA1 4YBUK
| | - Sarah Deeley
- Department of ChemistryLancaster UniversityLancasterLA1 4YBUK
| | - Ella Francis
- Department of ChemistryLancaster UniversityLancasterLA1 4YBUK
| | - Nahin Kazi
- Department of ChemistryLancaster UniversityLancasterLA1 4YBUK
| | | | | | - Amal D. Aljohani
- Department of ChemistryLancaster UniversityLancasterLA1 4YBUK
- Department of Chemistry (Female Section)Faculty of ScienceKing Abdulaziz UniversityJeddah‐Rabbigh21589Saudi Arabia
| | - David Cheneler
- School of EngineeringLancaster UniversityLancasterLA1 4YWUK
- Materials Science InstituteLancaster UniversityLancasterLA1 4YBUK
| | - Volkan Kilic
- Department of Electrical and Electronics EngineeringIzmir Katip Celebi UniversityIzmir35620Turkey
| | - Nesrin Horzum
- Department of Engineering SciencesIzmir Katip Celebi UniversityIzmir35620Turkey
| | - John G. Hardy
- Department of ChemistryLancaster UniversityLancasterLA1 4YBUK
- Materials Science InstituteLancaster UniversityLancasterLA1 4YBUK
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2
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Evren G, Er E, Yalcinkaya EE, Horzum N, Odaci D. Electrospun Nanofibers including Organic/Inorganic Nanohybrids: Polystyrene- and Clay-Based Architectures in Immunosensor Preparation for Serum Amyloid A. Biosensors (Basel) 2023; 13:673. [PMID: 37504072 PMCID: PMC10377714 DOI: 10.3390/bios13070673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 06/14/2023] [Accepted: 06/19/2023] [Indexed: 07/29/2023]
Abstract
Diagnostic techniques based on biomolecules have application potential that can be realized in many fields, such as disease diagnosis, bioprocess imaging, food/beverage industries, and environmental pollutant imaging. Successful surface immobilization of biomolecules is critical to increasing the stabilization, sensitivity, and selectivity of biomolecules used in bioassay systems. Nanofibers are good candidates for the immobilization of biomolecules owing to many advantages such as morphology and pore size. In this study, montmorillonite (MMT) clay is modified with poly(amidoamine) (PAMAM) generation 3 (PAMAMG3) and added to polystyrene (PS) solutions, following which PS/MMT-PAMAMG3 nanofibers are obtained using the electrospinning method. The nanofibers are obtained by testing PS% (wt%) and MMT-PAMAMG3% (wt%) ratios and characterized with scanning electron microscopy. Antiserum amyloid A antibody (Anti-SAA) is then conjugated to the nanofibers on the electrode surface via covalent bonds using a zero-length cross linker. Finally, the obtained selective surface is used for electrochemical determination of serum amyloid A (SAA) levels. The linear range of PS/MMT-PAMAM/Anti-SAA is between 1 and 200 ng/mL SAA, and the detection limit is 0.57 ng/mL SAA. The applicability of PS/MMT-PAMAMG3/Anti-SAA is investigated by taking measurements in synthetic saliva and serum both containing SAA.
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Affiliation(s)
- Gizem Evren
- Department of Biochemistry, Faculty of Science, Ege University, Bornova, Izmir 35100, Turkey
| | - Eray Er
- Department of Biochemistry, Faculty of Science, Ege University, Bornova, Izmir 35100, Turkey
| | - Esra Evrim Yalcinkaya
- Department of Chemistry, Faculty of Science, Ege University, Bornova, Izmir 35100, Turkey
| | - Nesrin Horzum
- Department of Engineering Sciences, Izmir Katip Celebi University, Cigli, Izmir 35620, Turkey
| | - Dilek Odaci
- Department of Biochemistry, Faculty of Science, Ege University, Bornova, Izmir 35100, Turkey
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3
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Atik G, Kilic NM, Horzum N, Odaci D, Timur S. Antibody-Conjugated Electrospun Nanofibers for Electrochemical Detection of Methamphetamine. ACS Appl Mater Interfaces 2023; 15:24109-24119. [PMID: 37184103 DOI: 10.1021/acsami.3c02266] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Multifunctional electrospun nanofibers (ENs) with improved properties have increased attention nowadays. Their insoluble forms in water with decreased hydrophobicity are desired for the immobilization of biological molecules. Also, the addition of functional groups on the backbone provides the conjugation of biomolecules onto the surface of ENs via covalent bonds to increase their stability. Here, poly(vinylidene fluoride) (PVDF) was chosen to prepare a platform, which is insoluble in water, and polyethylenimine (PEI) was used to add amine groups on the surface of ENs to bind biological molecules via covalent conjugation. So, PVDF-PEI nanofibers were prepared on a glassy carbon electrode to immobilize an antimethamphetamine antibody (Anti-METH) as a model biomolecule. The obtained PVDF-PEI/Anti-METH was used for the bioelectrochemical detection of methamphetamine (METH), a common illicit drug. Bioelectrochemical detection of METH on PVDF-PEI/Anti-METH-coated electrodes was carried out by voltammetry in the range of 2.0-50 ng/mL METH. Moreover, the effect of dansyl chloride (DNC) derivatization of METH on the sensitivity of PVDF-PEI/Anti-METH was tested. Finally, METH analysis was carried out in synthetic body fluids. The obtained results showed that PVDF-PEI ENs can be adopted as an immobilization matrix for the biorecognition elements of biobased detection systems, and the derivative of METH (METH-DNC) increased the sensitivity of PVDF-PEI/Anti-METH.
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Affiliation(s)
- Gozde Atik
- Department of Biochemistry, Faculty of Science, Ege University, Bornova, 35100 Izmir, Turkey
| | - Nur Melis Kilic
- Department of Biochemistry, Faculty of Science, Ege University, Bornova, 35100 Izmir, Turkey
| | - Nesrin Horzum
- Department of Engineering Sciences and Biocomposite Engineering Graduate Program, İzmir Katip Çelebi University, 35620 Izmir, Turkey
| | - Dilek Odaci
- Department of Biochemistry, Faculty of Science, Ege University, Bornova, 35100 Izmir, Turkey
| | - Suna Timur
- Department of Biochemistry, Faculty of Science, Ege University, Bornova, 35100 Izmir, Turkey
- Central Research Test and Analysis Laboratory Application and Research Center, Ege University, Bornova, 35100 Izmir, Turkey
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4
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Doğan D, Karaduman FR, Horzum N, Metin AÜ. Boron nitride decorated poly(vinyl alcohol)/poly(acrylic acid) composite nanofibers: A promising material for biomedical applications. J Mech Behav Biomed Mater 2023; 141:105773. [PMID: 36934687 DOI: 10.1016/j.jmbbm.2023.105773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 01/18/2023] [Revised: 03/05/2023] [Accepted: 03/07/2023] [Indexed: 03/09/2023]
Abstract
In this study, polyvinyl alcohol (PVA) and polyacrylic acid (PAA) nanofibers loaded with boron nitride nanoparticles (mBN) were fabricated by using electrospinning and crosslinked by heat treatment. The physical, chemical, and mechanical properties, hydrophilic behavior, and degradability of composite nanofibers were evaluated. The mechanical properties such as elastic modulus, elongation percentage at the break, and mechanical strength of PVA/PAA nanofibers improved with mBN loading. The thermal conductivity of composite nanofibers reached 0.12 W/m·K at mBN content of 1.0 wt% due to the continuous heat conduction pathways of mBN. In the meantime, while there was no cytotoxicity recorded for both L929 and HUVEC cell lines for all composite nanofibers, the antimicrobial efficiency improved with the incorporation of mBN compared with PVA/PAA and recorded as 68.8% and 75.1% for Escherichia coli and Staphylococcus aureus, respectively. On this basis, the present work proposes a promising biomaterial for biomedical applications such as dual drug delivery, particularly including both hydrophobic and hydrophilic drugs or wound dressing.
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Affiliation(s)
- Deniz Doğan
- Department of Chemistry, Faculty of Science and Arts, Kırıkkale University, Yahşihan, 71450, Kırıkkale, Turkey
| | - F Rabia Karaduman
- Graduate School of Natural and Applied Sciences, İzmir Katip Çelebi University, İzmir, 35620, Turkey
| | - Nesrin Horzum
- Department of Engineering Sciences, Izmir Katip Çelebi University, Izmir, Turkey
| | - Ayşegül Ülkü Metin
- Department of Chemistry, Faculty of Science and Arts, Kırıkkale University, Yahşihan, 71450, Kırıkkale, Turkey.
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5
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Doǧan V, Isık T, Kılıç V, Horzum N. A field-deployable water quality monitoring with machine learning-based smartphone colorimetry. Anal Methods 2022; 14:3458-3466. [PMID: 36000587 DOI: 10.1039/d2ay00785a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Water quality monitoring is an increasing global concern as the pollution of water sources causes adverse effects on economic growth and human health. Traditional approaches to the detection of pollutants are time-consuming and labor-intensive due to the requirement of sophisticated equipment or laboratory settings. Therefore, portable devices featuring rapid response and easy operation are indispensable in water quality monitoring. Herein, smartphone-based colorimetric pollutant quantification is demonstrated in a machine learning (ML) framework. As a proof of concept, the presence of seven ions in water was analyzed using colorimetric strips. The color variation on the strip indicators was captured under eight lighting conditions with five smartphones, providing robustness against the illumination variation and camera optics for ML classifiers. Color and texture features were extracted from the images to train the classifiers. Among the twenty-three classifiers, K-Nearest Neighbors exhibits the best classification performance, leading to the integration with our custom-designed Android application called Hydro Sens. The proposed approach was also tested with real samples taken from local water sources. The results prove that incorporating color strips with ML with a smartphone application can be used for water quality monitoring, which offers promising alternatives for sophisticated equipment that is especially applicable in resource-limited settings.
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Affiliation(s)
- Vakkas Doǧan
- Department of Electrical and Electronics Engineering, Izmir Katip Celebi University, 35620 Turkey.
| | - Tuǧba Isık
- Department of Mineral Analysis and Technologies, General Directorate of Mineral Research and Exploration (MTA), Ankara, Turkey
| | - Volkan Kılıç
- Department of Electrical and Electronics Engineering, Izmir Katip Celebi University, 35620 Turkey.
| | - Nesrin Horzum
- Department of Engineering Sciences, Izmir Katip Celebi University, 35620 Izmir, Turkey
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Arik N, Horzum N, Truong YB. Development and Characterizations of Engineered Electrospun Bio-Based Polyurethane Containing Essential Oils. Membranes 2022; 12:membranes12020209. [PMID: 35207129 PMCID: PMC8876489 DOI: 10.3390/membranes12020209] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/29/2022] [Accepted: 02/06/2022] [Indexed: 01/27/2023]
Abstract
We report the fabrication of bio-based thermoplastic polyurethane (TPU) fibrous scaffolds containing essential oils (EO). The main goal of this study was to investigate the effects of essential oil type (St. John’s Wort oil (SJWO), lavender oil (LO), and virgin olive oil (OO))/concentration on the electrospinnability of TPU. The effects of applied voltage, flow rate, and end-tip distance on the diameter, morphology, and wettability of the TPU/EO electrospun fibers were investigated. The electrospun TPU/EO scaffolds were characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), contact angle (CA), and Fourier transform infrared spectroscopy (FTIR). The addition of oil resulted in an increase in the fiber diameter, reduction in the surface roughness, and, accordingly, a reduction in the contact angle of the composite fibers. TPU fibers containing SJWO and LO have a more flexible structure compared to the fibers containing OO. This comparative study fills the existing information gap and shows the benefits of the fabrication of essential-oil-incorporated electrospun fiber with morphology and size range with respect to the desired applications, which are mostly wound dressing and food packaging.
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Affiliation(s)
- Nehir Arik
- Department of Biocomposite Engineering Graduate Program, Izmir Katip Celebi University, Izmir 35620, Turkey;
| | - Nesrin Horzum
- Department of Biocomposite Engineering Graduate Program, Izmir Katip Celebi University, Izmir 35620, Turkey;
- Department of Engineering Sciences, Izmir Katip Celebi University, Izmir 35620, Turkey
- Correspondence: ; Tel.: +90-542-761-6775
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7
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Erdem Ç, Isık T, Horzum N, Hazer B, Demir MM. Electrospinning of Fatty Acid‐Based and Metal Incorporated Polymers for the Fabrication of Eco‐Friendly Fibers. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202100438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Çaǧlar Erdem
- Department of Materials Science and Engineering İzmir Institute of Technology İzmir Turkey
| | - Tuǧba Isık
- Department of Mineral Analysis and Technologies General Directorate of Mineral Research and Exploration Ankara Turkey
| | - Nesrin Horzum
- Department of Engineering Sciences İzmir Katip Celebi University İzmir Turkey
| | - Baki Hazer
- Department of Aircraft Airflame Engine Maintenance Kapadokya University Ürgüp Nevşehir Turkey
- Zonguldak Bülent Ecevit University Department of Chemistry Zonguldak Turkey
| | - Mustafa M. Demir
- Department of Materials Science and Engineering İzmir Institute of Technology İzmir Turkey
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8
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Kiliç V, Mercan ÖB, Tetik M, Kap Ö, Horzum N. Non-enzymatic Colorimetric Glucose Detection Based on Au/Ag Nanoparticles Using Smartphone and Machine Learning. ANAL SCI 2021; 38:347-358. [PMID: 34744116 DOI: 10.2116/analsci.21p253] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 10/29/2021] [Indexed: 11/23/2022]
Affiliation(s)
- Volkan Kiliç
- Department of Electrical and Electronics Engineering, Izmir Katip Celebi University
| | - Öykü B Mercan
- Department of Electrical and Electronics Engineering, Izmir Katip Celebi University
| | - Mehmet Tetik
- Department of Biocomposite Engineering, Graduate School of Natural and Applied Sciences, Izmir Katip Celebi University
| | - Özlem Kap
- Department of Engineering Sciences, İzmir Katip Çelebi University
| | - Nesrin Horzum
- Department of Engineering Sciences, İzmir Katip Çelebi University
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9
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Kap Ö, Kılıç V, Hardy JG, Horzum N. Smartphone-based colorimetric detection systems for glucose monitoring in the diagnosis and management of diabetes. Analyst 2021; 146:2784-2806. [PMID: 33949379 DOI: 10.1039/d0an02031a] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Diabetes is a group of metabolic conditions resulting in high blood sugar levels over prolonged periods that affects hundreds of millions of patients worldwide. Measuring glucose concentration enables patient-specific insulin therapy, and is essential to reduce the severity of the disease, potential complications, and related mortalities. Recent advances and developments in smartphone-based colorimetric glucose detection systems are discussed in this review. The importance of glucose monitoring, data collection, transfer, and analysis, via non-invasive/invasive methods is highlighted. The review also presents various approaches using 3D-printed materials, screen-printed electrodes, polymer templates, designs allowing multiple glucose analysis, bioanalytes and/or nanostructures for glucose detection. The positive effects of advances in improving the performance of smartphone-based platforms are introduced along with future directions and trends in the application of emerging technologies in smartphone-based diagnostics.
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Affiliation(s)
- Özlem Kap
- Department of Engineering Sciences, İzmir Katip Çelebi University, 35620 Turkey.
| | - Volkan Kılıç
- Department of Electrical and Electronics Engineering, İzmir Katip Çelebi University, 35620 Turkey
| | - John G Hardy
- Department of Chemistry, Lancaster University, Lancaster, Lancashire LA1 4YB, UK and Materials Science Institute, Lancaster University, Lancaster, Lancashire LA1 4YB, UK
| | - Nesrin Horzum
- Department of Engineering Sciences, İzmir Katip Çelebi University, 35620 Turkey.
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10
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Onak G, Şen M, Horzum N, Ercan UK, Yaralı ZB, Garipcan B, Karaman O. Aspartic and Glutamic Acid Templated Peptides Conjugation on Plasma Modified Nanofibers for Osteogenic Differentiation of Human Mesenchymal Stem Cells: A Comparative Study. Sci Rep 2018; 8:17620. [PMID: 30514892 PMCID: PMC6279782 DOI: 10.1038/s41598-018-36109-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 11/14/2018] [Indexed: 11/21/2022] Open
Abstract
Optimization of nanofiber (NF) surface properties is critical to achieve an adequate cellular response. Here, the impact of conjugation of biomimetic aspartic acid (ASP) and glutamic acid (GLU) templated peptides with poly(lactic-co-glycolic acid) (PLGA) electrospun NF on osteogenic differentiation of human bone marrow-derived mesenchymal stem cells (hMSCs) was evaluated. Cold atmospheric plasma (CAP) was used to functionalize the NF surface and thus to mediate the conjugation. The influence of the CAP treatment following with peptide conjugation to the NF surface was assessed using water contact angle measurements, Fourier-Transform Infrared Spectroscopy (FTIR) and X-ray Photoelectron Spectroscopy (XPS). The effect of CAP treatment on morphology of NF was also checked using Scanning Electron Microscopy (SEM). Both the hydrophilicity of NF and the number of the carboxyl (-COOH) groups on the surface increased with respect to CAP treatment. Results demonstrated that CAP treatment significantly enhanced peptide conjugation on the surface of NF. Osteogenic differentiation results indicated that conjugating of biomimetic ASP templated peptides sharply increased alkaline phosphatase (ALP) activity, calcium content, and expression of key osteogenic markers of collagen type I (Col-I), osteocalcin (OC), and osteopontin (OP) compared to GLU conjugated (GLU-pNF) and CAP treated NF (pNF). It was further depicted that ASP sequences are the major fragments that influence the mineralization and osteogenic differentiation in non-collagenous proteins of bone extracellular matrix.
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Affiliation(s)
- Günnur Onak
- Department of Biomedical Engineering, İzmir Katip Çelebi University, İzmir, 35620, Turkey
| | - Mustafa Şen
- Department of Biomedical Engineering, İzmir Katip Çelebi University, İzmir, 35620, Turkey
| | - Nesrin Horzum
- Department of Engineering Sciences, İzmir Katip Çelebi University, İzmir, 35620, Turkey
| | - Utku Kürşat Ercan
- Department of Biomedical Engineering, İzmir Katip Çelebi University, İzmir, 35620, Turkey
| | - Ziyşan Buse Yaralı
- Department of Biomedical Engineering, İzmir Katip Çelebi University, İzmir, 35620, Turkey
| | - Bora Garipcan
- Institute of Biomedical Engineering, Bogazici University, 34684, İstanbul, Turkey
| | - Ozan Karaman
- Department of Biomedical Engineering, İzmir Katip Çelebi University, İzmir, 35620, Turkey.
- Bonegraft Biomaterials Co., Ege University Technopolis, 35100, Bornova, İzmir, Turkey.
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Arik N, Inan A, Ibis F, Demirci EA, Karaman O, Ercan UK, Horzum N. Modification of electrospun PVA/PAA scaffolds by cold atmospheric plasma: alignment, antibacterial activity, and biocompatibility. Polym Bull (Berl) 2018. [DOI: 10.1007/s00289-018-2409-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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12
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Kılıç V, Alankus G, Horzum N, Mutlu AY, Bayram A, Solmaz ME. Single-Image-Referenced Colorimetric Water Quality Detection Using a Smartphone. ACS Omega 2018; 3:5531-5536. [PMID: 31458756 PMCID: PMC6641965 DOI: 10.1021/acsomega.8b00625] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 05/10/2018] [Indexed: 05/25/2023]
Abstract
In this paper, we present a smartphone platform for colorimetric water quality detection based on the use of built-in camera for capturing a single-use reference image. A custom-developed app processes this image for training and creates a reference model to be used later in real experimental conditions to calculate the concentration of the unknown solution. This platform has been tested on four different water quality colorimetric assays with various concentration levels, and results show that the presented platform provides approximately 100% accuracy for colorimetric assays with noticeable color difference. This portable, cost-effective, and user-friendly platform is promising for application in water quality monitoring.
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Affiliation(s)
- Volkan Kılıç
- Department
of Electrical and Electronics Engineering, Department of Engineering
Sciences, and Department of Material Science and Engineering, Izmir Katip Celebi University, Balatcik Campus, Cigli, Izmir 35620, Turkey
| | - Gazihan Alankus
- Department
of Mechatronics Engineering, Izmir University
of Economics, Balcova, 35330 Izmir, Turkey
| | - Nesrin Horzum
- Department
of Electrical and Electronics Engineering, Department of Engineering
Sciences, and Department of Material Science and Engineering, Izmir Katip Celebi University, Balatcik Campus, Cigli, Izmir 35620, Turkey
| | - Ali Y. Mutlu
- Department
of Electrical and Electronics Engineering, Department of Engineering
Sciences, and Department of Material Science and Engineering, Izmir Katip Celebi University, Balatcik Campus, Cigli, Izmir 35620, Turkey
| | - Abdullah Bayram
- Department
of Electrical and Electronics Engineering, Department of Engineering
Sciences, and Department of Material Science and Engineering, Izmir Katip Celebi University, Balatcik Campus, Cigli, Izmir 35620, Turkey
| | - Mehmet E. Solmaz
- Department
of Electrical and Electronics Engineering, Department of Engineering
Sciences, and Department of Material Science and Engineering, Izmir Katip Celebi University, Balatcik Campus, Cigli, Izmir 35620, Turkey
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13
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Abstract
Enhanced antimicrobial activity and photocatalytic performance are obtained by the calcination and subsequent rapid cooling of the zinc acetate precursor.
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Affiliation(s)
- Nesrin Horzum
- İzmir Katip Çelebi University
- Engineering Sciences Department
- Turkey
| | - Mohamed Elhousseini Hilal
- İzmir Katip Çelebi University
- Materials Science and Engineering Department
- Turkey
- Sultan Moulay Sliman University
- Chemistry and Environment Department
| | - Tuğba Isık
- İzmir Institute of Technology
- Materials Science and Engineering Department
- Turkey
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14
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Abstract
We report the application of machine learning to smartphone-based colorimetric detection of pH values. The strip images were used as the training set for Least Squares-Support Vector Machine (LS-SVM) classifier algorithms that were able to successfully classify the distinct pH values. The difference in the obtained image formats was found not to significantly affect the performance of the proposed machine learning approach. Moreover, the influence of the illumination conditions on the perceived color of pH strips was investigated and further experiments were conducted to study the effect of color change on the learning model. Non-integer pH levels are identified as their nearest integer pH values, whereas the test results for integer pH levels using JPEG, RAW and RAW-corrected image formats captured under different lighting conditions lead to perfect classification accuracy, sensitivity and specificity, which proves that colorimetric detection using machine learning based systems is able to adapt to various experimental conditions and is a great candidate for smartphone-based sensing in paper-based colorimetric assays.
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Affiliation(s)
- Ali Y Mutlu
- Department of Electrical and Electronics Engineering, Izmir Katip Celebi University, Izmir, Turkey
| | - Volkan Kılıç
- Department of Electrical and Electronics Engineering, Izmir Katip Celebi University, Izmir, Turkey
| | | | - Abdullah Bayram
- Department of Materials Science and Engineering, Izmir Katip Celebi University, Izmir, Turkey
| | - Nesrin Horzum
- Department of Engineering Sciences, Izmir Katip Celebi University, Izmir, Turkey
| | - Mehmet E Solmaz
- Department of Electrical and Electronics Engineering, Izmir Katip Celebi University, Izmir, Turkey and Nanoscience and Nanotechnology Programme, Izmir Katip Celebi University, Izmir, Turkey.
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16
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Horzum N, Mete D, Karakuş E, Üçüncü M, Emrullahoğlu M, Demir MM. Rhodamine-Immobilised Electrospun Chitosan Nanofibrous Material as a Fluorescence Turn-On Hg2+Sensor. ChemistrySelect 2016. [DOI: 10.1002/slct.201600027] [Citation(s) in RCA: 11] [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: 11/10/2022]
Affiliation(s)
- Nesrin Horzum
- Department of Engineering Sciences; Izmir Katip Celebi University; 35620 Turkey
| | - Derya Mete
- Department of Chemistry; Izmir Institute of Technology; 35430 Turkey
| | - Erman Karakuş
- Department of Chemistry; Izmir Institute of Technology; 35430 Turkey
| | - Muhammed Üçüncü
- Department of Chemistry; Izmir Institute of Technology; 35430 Turkey
| | | | - Mustafa M. Demir
- Department of Materials Science and Engineering; Izmir Institute of Technology; 35430 Turkey
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Horzum N, Mari M, Wagner M, Fortunato G, Popa AM, Demir MM, Landfester K, Crespy D, Muñoz-Espí R. Controlled surface mineralization of metal oxides on nanofibers. RSC Adv 2015. [DOI: 10.1039/c5ra02140e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Metal oxide/polymer hybrid nanofibers are prepared by in situ formation of metal oxide nanoparticles on surface-functionalized polymer fibers.
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Affiliation(s)
- Nesrin Horzum
- Max Planck Institute for Polymer Research
- 55128 Mainz
- Germany
- Department of Engineering Sciences
- İzmir Katip Çelebi University
| | | | - Manfred Wagner
- Max Planck Institute for Polymer Research
- 55128 Mainz
- Germany
| | | | | | - Mustafa M. Demir
- Department of Material Science and Engineering
- İzmir Institute of Technology
- İzmir
- Turkey
| | | | - Daniel Crespy
- Max Planck Institute for Polymer Research
- 55128 Mainz
- Germany
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18
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Demir MM, Horzum N, Taşdemirci A, Turan K, Güden M. Mechanical interlocking between porous electrospun polystyrene fibers and an epoxy matrix. ACS Appl Mater Interfaces 2014; 6:21901-21905. [PMID: 25485762 DOI: 10.1021/am507029c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
An epoxy matrix filled with nonwoven mats of porous polystyrene (PS) fibers processed by an electrospinning was compression tested at quasi-static (1 × 10(-3) s(-1)) and high strain (315 s(-1)) rates. The electrospun PS fibers with a diameter between 6 and 9 μm, accommodated spherical pores on the surface with the sizes ranging from 0.1 to 0.2 μm. The filling epoxy matrix with 0.2 wt % PS fibers increased the compressive elastic modulus and compressive strength over those of neat epoxy resin. The microscopic observations indicated that the surface pores facilitated the resin intrusions into the fiber, enhancing the interlocking between resin and fibers, and increased the deformation energy expenditure of the polymer matrix.
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Affiliation(s)
- Mustafa M Demir
- Department of Materials Science and Engineering, and §Mechanical Engineering, İzmir Institute of Technology , Urla, 35430 İzmir, Turkey
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Horzum N, Tascioglu D, Özbek C, Okur S, Demir MM. VOC sensors based on a metal oxide nanofibrous membrane/QCM system prepared by electrospinning. NEW J CHEM 2014. [DOI: 10.1039/c4nj00884g] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Demir MM, Horzum N, Özen B, Özçelik S. Hierarchial Coassembly of a Cyanine Dye in Poly(vinyl alcohol) Fibrous Films by Electrospinning. J Phys Chem B 2013; 117:10920-8. [DOI: 10.1021/jp404977d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mustafa M. Demir
- Department of Chemistry, and §Department of Material Science and Engineering, İzmir Institute of Technology, Urla, 35430 İzmir, Turkey
| | - Nesrin Horzum
- Department of Chemistry, and §Department of Material Science and Engineering, İzmir Institute of Technology, Urla, 35430 İzmir, Turkey
| | - Bengisu Özen
- Department of Chemistry, and §Department of Material Science and Engineering, İzmir Institute of Technology, Urla, 35430 İzmir, Turkey
| | - Serdar Özçelik
- Department of Chemistry, and §Department of Material Science and Engineering, İzmir Institute of Technology, Urla, 35430 İzmir, Turkey
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Boyacı E, Horzum N, Çağır A, Demir MM, Eroğlu AE. Electrospun amino-functionalized PDMS as a novel SPME sorbent for the speciation of inorganic and organometallic arsenic species. RSC Adv 2013. [DOI: 10.1039/c3ra43622e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Horzum N, Demir MM, Nairat M, Shahwan T. Chitosan fiber-supported zero-valent iron nanoparticles as a novel sorbent for sequestration of inorganic arsenic. RSC Adv 2013. [DOI: 10.1039/c3ra23454a] [Citation(s) in RCA: 100] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Horzum N, Muñoz-Espí R, Glasser G, Demir MM, Landfester K, Crespy D. Hierarchically structured metal oxide/silica nanofibers by colloid electrospinning. ACS Appl Mater Interfaces 2012; 4:6338-45. [PMID: 23092359 DOI: 10.1021/am301969w] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
We present herein a new concept for the preparation of nanofibrous metal oxides based on the simultaneous electrospinning of metal oxide precursors and silica nanoparticles. Precursor fibers are prepared by electrospinning silica nanoparticles (20 nm in diameter) dispersed in an aqueous solution of poly(acrylic acid) and metal salts. Upon calcination in air, the poly(acrylic acid) matrix is removed, the silica nanoparticles are cemented, and nanocrystalline metal oxide particles of 4-14 nm are nucleated at the surface of the silica nanoparticles. The obtained continuous silica fibers act as a structural framework for metal oxide nanoparticles and show improved mechanical integrity compared to the neat metal oxide fibers. The hierarchically nanostructured materials are promising for catalysis applications, as demonstrated by the successful degradation of a model dye in the presence of the fibers.
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Affiliation(s)
- Nesrin Horzum
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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Horzum N, Taşçıoglu D, Okur S, Demir MM. Humidity sensing properties of ZnO-based fibers by electrospinning. Talanta 2011; 85:1105-11. [DOI: 10.1016/j.talanta.2011.05.031] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2011] [Revised: 05/09/2011] [Accepted: 05/17/2011] [Indexed: 11/26/2022]
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Abstract
Chitosan fibers showing narrow diameter distribution with a mean of 42 nm were produced by electrospinning and utilized for the sorption of Fe(III), Cu(II), Ag(I), and Cd(II) ions from aqueous solutions. The ion concentrations in the supernatant solutions were determined using inductively coupled plasma-mass spectrometry (ICP-MS). The filtration efficiency of the fibers toward these ions was studied by both batch and microcolumn methods. High efficiency in sorption of the metal ions was obtained in the both methods. The effects of sorbent amount (0.10-0.50 mg), shaking time (15-120 min), initial metal ion concentration (10.0-1000.0 μg·L(-1)), and temperature (25 and 50 °C) on the extent of sorption were examined. The sorbent amount did not significantly alter the efficiency of sorption; however, shaking time, temperature, and metal ion concentration were found to have a strong influence on sorption. By virtue of its mechanical integrity, the applicability of the chitosan mat in solid phase extraction under continuous flow looks promising.
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Affiliation(s)
- Nesrin Horzum
- Department of Chemistry, Izmir Institute of Technology, Izmir, Turkey
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Divrikli U, Horzum N, Soylak M, Elci L. Trace heavy metal contents of some spices and herbal plants from western Anatolia, Turkey. Int J Food Sci Technol 2006. [DOI: 10.1111/j.1365-2621.2005.01140.x] [Citation(s) in RCA: 102] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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