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Mǎgeruşan L, Pogǎcean F, Cozar BI, Tripon SC, Pruneanu S. Harnessing Graphene-Modified Electrode Sensitivity for Enhanced Ciprofloxacin Detection. Int J Mol Sci 2024; 25:3691. [PMID: 38612501 PMCID: PMC11012167 DOI: 10.3390/ijms25073691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 03/22/2024] [Accepted: 03/24/2024] [Indexed: 04/14/2024] Open
Abstract
Increased evidence has documented a direct association between Ciprofloxacin (CFX) intake and significant disruption to the normal functions of connective tissues, leading to severe health conditions (such as tendonitis, tendon rupture and retinal detachment). Additionally, CFX is recognized as a potential emerging pollutant, as it seems to impact both animal and human food chains, resulting in severe health implications. Consequently, there is a compelling need for the precise, swift and selective detection of this fluoroquinolone-class antibiotic. Herein, we present a novel graphene-based electrochemical sensor designed for Ciprofloxacin (CFX) detection and discuss its practical utility. The graphene material was synthesized using a relatively straightforward and cost-effective approach involving the electrochemical exfoliation of graphite, through a pulsing current, in 0.05 M sodium sulphate (Na2SO4), 0.05 M boric acid (H3BO3) and 0.05 M sodium chloride (NaCl) solution. The resulting material underwent systematic characterization using scanning electron microscopy/energy dispersive X-ray analysis, X-ray powder diffraction and Raman spectroscopy. Subsequently, it was employed in the fabrication of modified glassy carbon surfaces (EGr/GC). Linear Sweep Voltammetry studies revealed that CFX experiences an irreversible oxidation process on the sensor surface at approximately 1.05 V. Under optimal conditions, the limit of quantification was found to be 0.33 × 10-8 M, with a corresponding limit of detection of 0.1 × 10-8 M. Additionally, the developed sensor's practical suitability was assessed using commercially available pharmaceutical products.
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Affiliation(s)
- Lidia Mǎgeruşan
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat Street, 67-103 Cluj-Napoca, Romania; (F.P.); (B.-I.C.); (S.-C.T.)
| | | | | | | | - Stela Pruneanu
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat Street, 67-103 Cluj-Napoca, Romania; (F.P.); (B.-I.C.); (S.-C.T.)
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Pogăcean F, Varodi C, Măgeruşan L, Pruneanu S. Highly Sensitive Graphene-Based Electrochemical Sensor for Nitrite Assay in Waters. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13091468. [PMID: 37177012 PMCID: PMC10179868 DOI: 10.3390/nano13091468] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 04/21/2023] [Accepted: 04/23/2023] [Indexed: 05/15/2023]
Abstract
The importance of nitrite ions has long been recognized due to their extensive use in environmental chemistry and public health. The growing use of nitrogen fertilizers and additives containing nitrite in processed food items has increased exposure and, as a result, generated concerns about potential harmful health consequences. This work presents the development of an electrochemical sensor based on graphene/glassy carbon electrode (EGr/GC) with applicability in trace level detection of nitrite in water samples. According to the structural characterization of the exfoliated material, it appears as a mixture of graphene oxide (GO; 21.53%), few-layers graphene (FLG; 73.25%) and multi-layers graphene (MLG; 5.22%) and exhibits remarkable enhanced sensing response towards nitrite compared to the bare electrode (three orders of magnitude higher). The EGr/GC sensor demonstrated a linear range between 3 × 10-7 and 10-3 M for square wave voltammetry (SWV) and between 3 × 10-7 and 4 × 10-4 M for amperometry (AMP), with a low limit of detection LOD (9.9 × 10-8 M). Excellent operational stability, repeatability and interference-capability were displayed by the modified electrode. Furthermore, the practical applicability of the sensor was tested in commercially available waters with excellent results.
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Affiliation(s)
- Florina Pogăcean
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Codruţa Varodi
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Lidia Măgeruşan
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Stela Pruneanu
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
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Măgeruşan L, Pogăcean F, Cozar BI, Pruneanu S. Analytical Applicability of Graphene-Modified Electrode in Sunset Yellow Electrochemical Assay. SENSORS (BASEL, SWITZERLAND) 2023; 23:2160. [PMID: 36850755 PMCID: PMC10004213 DOI: 10.3390/s23042160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 02/07/2023] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
Due to the recent increase in average living standards, food safety has caught public attention. It is necessary to conduct a qualitative and quantitative rapid test of prohibited food additives since the inclusion of food additives or the improper usage of synthetic dyes can negatively impact on the human health. Herein, a highly sensitive method for Sunset Yellow detection based on a glassy carbon electrode modified with few-layer graphenes was proposed. The electrochemical behavior of SY at the GR-exf/GCE modified surface was investigated by Cyclic Voltammetry, Square Wave Voltammetry, Electrochemical Impedance Spectroscopy and Amperometry. The influences of pH, scan rate, and interfering species were studied. Under optimized conditions, the developed sensor shows good linearity over a broad SY concentration range, e.g., 0.028-30 µM, with a low limit of detection (LOD = 0.0085 µM) and quantification (LOQ = 0.028 µM) (data obtained by amperometric technique). Furthermore, the modified electrode shows good selectivity, precision and sensitivity and has been successfully applied for SY quantification from commercially available pharmaceutical formulation as well as from candy bars and orange juice.
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Pogăcean F, Varodi C, Măgeruşan L, Stefan-van Staden RI, Pruneanu S. Highly Sensitive Electrochemical Detection of Azithromycin with Graphene-Modified Electrode. SENSORS (BASEL, SWITZERLAND) 2022; 22:6181. [PMID: 36015941 PMCID: PMC9413463 DOI: 10.3390/s22166181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 08/02/2022] [Accepted: 08/12/2022] [Indexed: 06/15/2023]
Abstract
An electrochemical cell containing two graphite rods was filled with the appropriate electrolyte (0.2 M ammonia + 0.2 M ammonium sulphate) and connected to the exfoliation system to synthesize graphene (EGr). A bias of 7 V was applied between the anode and cathode for 3 h. After synthesis, the morphology and structure of the sample was characterized by SEM, XRD, and FTIR techniques. The material was deposited onto the surface of a glassy carbon (GC) electrode (EGr/GC) and employed for the electrochemical detection of azithromycin (AZT). The DPV signals recorded in pH 5 acetate containing 6 × 10-5 M AZT revealed significant differences between the GC and EGr/GC electrodes. For EGr/GC, the oxidation peak was higher and appeared at lower potential (+1.12 V) compared with that of bare GC (+1.35 V). The linear range for AZT obtained with the EGr/GC electrode was very wide, 10-8-10-5 M, the sensitivity was 0.68 A/M, and the detection limit was 3.03 × 10-9 M. It is important to mention that the sensitivity of EGr/GC was three times higher than that of bare GC (0.23 A/M), proving the advantages of using graphene-modified electrodes in the electrochemical detection of AZT.
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Affiliation(s)
- Florina Pogăcean
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103, Donat Street, 400293 Cluj-Napoca, Romania
| | - Codruţa Varodi
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103, Donat Street, 400293 Cluj-Napoca, Romania
| | - Lidia Măgeruşan
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103, Donat Street, 400293 Cluj-Napoca, Romania
| | - Raluca-Ioana Stefan-van Staden
- Laboratory of Electrochemistry and PATLAB, National Institute of Research for Electrochemistry and Condensed Matter, 202 Splaiul Independentei Str., 060021 Bucharest, Romania
- Faculty of Applied Chemistry and Material Science, Politehnica University of Bucharest, 060042 Bucharest, Romania
| | - Stela Pruneanu
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103, Donat Street, 400293 Cluj-Napoca, Romania
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Niculae AR, Stefan-van Staden RI, van Staden JF, Georgescu State R. Sulfur-Doped Graphene-Based Electrochemical Sensors for Fast and Sensitive Determination of (R)-(+)-Limonene from Beverages. SENSORS (BASEL, SWITZERLAND) 2022; 22:5851. [PMID: 35957408 PMCID: PMC9371248 DOI: 10.3390/s22155851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 08/01/2022] [Accepted: 08/04/2022] [Indexed: 06/15/2023]
Abstract
Two sensors based on sulfur-doped graphene, a gold nanoparticle paste modified with 5,10,15,20-tetraphenyl-21H,23H-porphine and 5,10,15,20-tetrakis (pentafluorophenyl chloride)-21H,23H-iron (III) porphyrin, were proposed for the determination of R-limonene in beverages (triple sec liqueur and limoncello). Differential pulse voltammetry was the method used to characterize and validate the proposed sensors. The response characteristics showed that the detection limits for both sensors were 3 × 10-6 mol L-1, while the quantification limits were 1 × 10-5 mol L-1. Both sensors can be used to determine R-limonene in a concentration range between 1 × 10-5-6 × 10-4 mol L-1 for TPP/AuNPs-S-Gr and 1 × 10-5-1 × 10-3 mol L-1 for Fe(TPFPP)Cl/AuNPs-S-Gr. The highest sensitivity (0.7068 µA/mol L-1) was recorded when the TPP/AuNPs-S-Gr sensor was used, proving that the electrocatalytic effect of this electrocatalyst is higher compared to that of Fe(TPFPP)Cl/AuNPs-S-Gr. High recoveries (values greater than 99.00%) and low RSD values (%) (below 5.00%) were recorded for both sensors when used to determine R-limonene in triple sec liqueur and limoncello.
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Affiliation(s)
- Andreea-Roxana Niculae
- Laboratory of Electrochemistry and PATLAB, National Institute of Research for Electrochemistry and Condensed Matter, 202 Splaiul Independentei Str., 060021 Bucharest, Romania
- Faculty of Chemical Engineering and Biotechnologies, Politehnica University of Bucharest, 060021 Bucharest, Romania
| | - Raluca-Ioana Stefan-van Staden
- Laboratory of Electrochemistry and PATLAB, National Institute of Research for Electrochemistry and Condensed Matter, 202 Splaiul Independentei Str., 060021 Bucharest, Romania
- Faculty of Chemical Engineering and Biotechnologies, Politehnica University of Bucharest, 060021 Bucharest, Romania
| | - Jacobus Frederick van Staden
- Laboratory of Electrochemistry and PATLAB, National Institute of Research for Electrochemistry and Condensed Matter, 202 Splaiul Independentei Str., 060021 Bucharest, Romania
| | - Ramona Georgescu State
- Laboratory of Electrochemistry and PATLAB, National Institute of Research for Electrochemistry and Condensed Matter, 202 Splaiul Independentei Str., 060021 Bucharest, Romania
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6
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Stefan-van Staden RI, Gheorghe DC, Ilie-Mihai RM, Tudoran LB, Pruneanu SM. Stochastic biosensors based on N- and S-doped graphene for the enantioanalysis of aspartic acid in biological samples. RSC Adv 2021; 11:23301-23309. [PMID: 35479820 PMCID: PMC9036598 DOI: 10.1039/d1ra02066h] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 06/22/2021] [Indexed: 01/15/2023] Open
Abstract
Metabolomics plays a very important role in cancer mechanism and also in the early diagnosis of cancer. The enantioanalysis of aminoacids found in biological samples may favor the development of new screening tests for the early diagnosis of cancer. Two stochastic biosensors, based on the immobilization of α-hemolysin and hemin in exfoliated reduced graphene modified with nitrogen and sulphur, were proposed for the enantioanalysis of aspartic acid in biological samples (whole blood, urine, saliva, and tissue). The proposed biosensors showed low limits of quantification, high sensitivity, and large linear concentration ranges. The recoveries of d- and l-aspartic acid in biological samples were higher than 95.00%, with a relative standard deviation lower than 1.00%. Stochastic biosensors based on N- and S-doped graphene modified with hemin or α-hemolysin contributed to establishing the metabolomics of gastric cancer by performing the enantioanalysis of aspartic acid in different biological samples.![]()
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Affiliation(s)
- Raluca-Ioana Stefan-van Staden
- Laboratory of Electrochemistry and PATLAB, National Institute of Research for Electrochemistry and Condensed Matter 202 Splaiul Independentei Str. 060021 Bucharest-6 Romania .,Faculty of Applied Chemistry and Material Science, Politehnica University of Bucharest Bucharest Romania
| | - Damaris-Cristina Gheorghe
- Laboratory of Electrochemistry and PATLAB, National Institute of Research for Electrochemistry and Condensed Matter 202 Splaiul Independentei Str. 060021 Bucharest-6 Romania .,Faculty of Applied Chemistry and Material Science, Politehnica University of Bucharest Bucharest Romania
| | - Ruxandra-Maria Ilie-Mihai
- Laboratory of Electrochemistry and PATLAB, National Institute of Research for Electrochemistry and Condensed Matter 202 Splaiul Independentei Str. 060021 Bucharest-6 Romania
| | - Lucian-Barbu Tudoran
- National Institute for Research and Development of Isotopic and Molecular Technologies Donat Street 67-103 Cluj-Napoca Romania
| | - Stela Maria Pruneanu
- National Institute for Research and Development of Isotopic and Molecular Technologies Donat Street 67-103 Cluj-Napoca Romania
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Pogacean F, Ştefan M, Toloman D, Popa A, Leostean C, Turza A, Coros M, Pana O, Pruneanu S. Photocatalytic and Electrocatalytic Properties of NGr-ZnO Hybrid Materials. NANOMATERIALS 2020; 10:nano10081473. [PMID: 32727153 PMCID: PMC7466554 DOI: 10.3390/nano10081473] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 07/21/2020] [Accepted: 07/22/2020] [Indexed: 11/16/2022]
Abstract
N-doped graphene-ZnO hybrid materials with different N-doped graphene:ZnO wt% ratios (1:10; 1:20; 1:30) were prepared by a simple and inexpensive sol-gel method. The materials denoted NGr-ZnO-1 (1:10), NGr-ZnO-2 (1:20), and NGr-ZnO-3 (1:30) were investigated with advanced techniques and their morpho-structural, photocatalytic, and electrocatalytic properties were reported. Hence, pure N-doped graphene sample contains flakes with the size ranging from hundreds of nanometers to micrometers. In the case of all NGr-ZnO hybrid materials, the flakes appear heavily decorated with ZnO nanoparticles, having a cauliflower-like morphology. The X-ray powder diffraction (XRD) investigation of N-doped graphene sample revealed that it was formed by a mixture of graphene oxide, few-and multi-layer graphene. After the ZnO nanoparticles were attached to graphene, major diffraction peaks corresponding to crystalline planes of ZnO were seen. The qualitative and quantitative compositions of the samples were further evidenced by X-ray photoelectron spectroscopy (XPS). In addition, UV photoelectron spectroscopy (UPS) spectra allowed the determination of the ionization energy and valence band maxima. The energy band alignment of the hybrid materials was established by combining UV-Vis with UPS results. A high photocatalytic activity of NGr-ZnO samples against rhodamine B solution was observed. The associated reactive oxygen species (ROS) generation was monitored by electron paramagnetic resonance (EPR)-spin trapping technique. In accordance with bands alignment and identification of radical species, the photocatalytic mechanism was elucidated.
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8
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Myoglobin-silver reduced graphene oxide nanocomposite stochastic biosensor for the determination of luteinizing hormone and follicle-stimulating hormone from saliva samples. Anal Bioanal Chem 2020; 412:5191-5202. [DOI: 10.1007/s00216-020-02663-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 04/02/2020] [Accepted: 04/15/2020] [Indexed: 02/07/2023]
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Stefan-van Staden RI, Ilie-Mihai RM, Gurzu S. Simultaneous Determination of Carcinoembryonic Antigen (CEA), Carbohydrate Antigen 19-9 (CA19-9), and Serum Protein p53 in Biological Samples with Protoporphyrin IX (PIX) Used for Recognition by Stochastic Microsensors. ANAL LETT 2020. [DOI: 10.1080/00032719.2020.1747480] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Raluca-Ioana Stefan-van Staden
- Laboratory of Electrochemistry and PATLAB, National Institute of Research for Electrochemistry and Condensed Matter, Bucharest, Romania
- Faculty of Applied Chemistry and Material Science, Politehnica University of Bucharest, Bucharest, Romania
| | - Ruxandra-Maria Ilie-Mihai
- Laboratory of Electrochemistry and PATLAB, National Institute of Research for Electrochemistry and Condensed Matter, Bucharest, Romania
- Faculty of Applied Chemistry and Material Science, Politehnica University of Bucharest, Bucharest, Romania
| | - Simona Gurzu
- Department of Pathology, George Emil Palade University of Medicine, Pharmacy, Sciences and Technology, Targu-Mures, Romania
- Department of Pathology, Clinical County Emergency Hospital, Targu-Mures, Romania
- Department of Pathology, Research Center (CCAMF), Targu-Mures, Romania
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10
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Stefan-van Staden RI, Ilie-Mihai RM, Pogacean F, Pruneanu S. Graphene-based stochastic sensors for pattern recognition of gastric cancer biomarkers in biological fluids. J PORPHYR PHTHALOCYA 2020. [DOI: 10.1142/s1088424619501293] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
This paper proposes pattern recognition of gastric cancer biomarkers CEA, CA19-9 and p53 in whole blood and urine samples using a stochastic sensor based on exfoliated graphene (E-NGr) paste modified with protoporphyrin IX. The proposed sensor covered large ranges of concentrations: 1 × 10[Formula: see text]–1 × 10[Formula: see text]g/mL for CEA, 1 × 10[Formula: see text]–1 × 102 U/mL for CA19-9, and 0.2–5.0 [Formula: see text]g/mL for p53. These ranges allowed the determination of the three biomarkers from early to latest stages of gastric cancer. Validation of the pattern recognition of gastric cancer biomarkers was accomplished using biological samples: whole blood and urine.
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Affiliation(s)
- Raluca-Ioana Stefan-van Staden
- Laboratory of Electrochemistry and PATLAB, National Institute of Research for Electrochemistry and Condensed Matter, 202 Splaiul Independentei Str., 060021, Bucharest-6, Romania
- Faculty of Applied Chemistry and Material Science, University Politehnica of Bucharest, 060042, Bucharest, Romania
| | - Ruxandra-Maria Ilie-Mihai
- Laboratory of Electrochemistry and PATLAB, National Institute of Research for Electrochemistry and Condensed Matter, 202 Splaiul Independentei Str., 060021, Bucharest-6, Romania
- Faculty of Applied Chemistry and Material Science, University Politehnica of Bucharest, 060042, Bucharest, Romania
| | - Florina Pogacean
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat Street, No. 67-103, RO-400293, Cluj-Napoca, Romania
| | - Stela Pruneanu
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat Street, No. 67-103, RO-400293, Cluj-Napoca, Romania
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Patil R, Bahadur P, Tiwari S. Dispersed graphene materials of biomedical interest and their toxicological consequences. Adv Colloid Interface Sci 2020; 275:102051. [PMID: 31753296 DOI: 10.1016/j.cis.2019.102051] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 09/04/2019] [Accepted: 10/17/2019] [Indexed: 02/07/2023]
Abstract
Graphene is one-atom thick nanocarbon displaying a unique honeycomb structure and extensive conjugation. In addition to high surface area to mass ratio, it displays unique optical, thermal, electronic and mechanical properties. Atomic scale tunability of graphene has attracted immense research interest with a prospective utility in electronics, desalination, energy sectors, and beyond. Its intrinsic opto-thermal properties are appealing from the standpoint of multimodal drug delivery, imaging and biosensing applications. Hydrophobic basal plane of sheets can be efficiently loaded with aromatic molecules via non-specific forces. With intense biomedical interest, methods are evolving to produce defect-free and dispersion stable sheets. This review summarizes advancements in synthetic approaches and strategies of stabilizing graphene derivatives in aqueous medium. We have described the interaction of colloidal graphene with cellular and sub-cellular components, and subsequent physiological signaling. Finally, a systematic discussion is provided covering toxicological challenges and possible solutions on utilizing graphene formulations for high-end biomedical applications.
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Stefan-van Staden RI, Ilie-Mihai RM, Pogacean F, Pruneanu SM. Needle stochastic sensors for on-site fast recognition and quantification of biomarkers for gastric cancer in biological samples. NEW J CHEM 2020. [DOI: 10.1039/d0nj03847d] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
N-Doped graphenes recognised CA19-9, CEA, and p53 in biological samples.
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Affiliation(s)
- Raluca-Ioana Stefan-van Staden
- Laboratory of Electrochemistry and PATLAB
- National Institute of Research for Electrochemistry and Condensed Matter
- 060021 Bucharest-6
- Romania
- Faculty of Applied Chemistry and Material Science
| | - Ruxandra-Maria Ilie-Mihai
- Laboratory of Electrochemistry and PATLAB
- National Institute of Research for Electrochemistry and Condensed Matter
- 060021 Bucharest-6
- Romania
- Faculty of Applied Chemistry and Material Science
| | - Florina Pogacean
- National Institute for Research and Development of Isotopic and Molecular Technologies
- Cluj-Napoca
- Romania
| | - Stela Maria Pruneanu
- National Institute for Research and Development of Isotopic and Molecular Technologies
- Cluj-Napoca
- Romania
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13
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Zaidi SA, Shahzad F, Batool S. Progress in cancer biomarkers monitoring strategies using graphene modified support materials. Talanta 2019; 210:120669. [PMID: 31987212 DOI: 10.1016/j.talanta.2019.120669] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 12/20/2019] [Accepted: 12/21/2019] [Indexed: 12/27/2022]
Abstract
Cancer is the one of the fatal and dreaded disease responsible for huge number of morbidity and mortality across the globe. It is expected that the global burden will increase to 21.7 million fresh cancer cases as compared to present estimate of 18.1 million cancer cases in addition to nearly 9.6 million cancer deaths worldwide. In response to cancerous or certain benign conditions; specific type of tumor or cancer markers (biomarkers) are produced at much higher levels which are secreted into the urine, blood, stool, tumor or other tissues. Therefore, the efficient and early detection of cancer biomarkers is necessary which can offer a reliable way for cancer patient screening and diagnosis. This process not only helps in the evaluation of pathogenic processes but also the prognosis of different cancers and pharmacological responses to therapeutic interventions are secured. Over the past several years, electrochemical detection methods have proved to be the most attractive methods among many, due to the advantages, such as simple instrumentation, portability, low cost and high sensitivity. Furthermore, the modifications of these electrochemical immunosensors by utilizing various types of nanomaterials enable these systems to detect trace amount of target tumor markers. Hence, herein, we intend to review the selective works on electrochemical detection of various biomarkers using wide range of nanomaterials with a particular focus on graphene.
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Affiliation(s)
- Shabi Abbas Zaidi
- Department of Chemistry and Earth Sciences, College of Arts and Sciences, Qatar University, Doha, 2713, Qatar.
| | - Faisal Shahzad
- National Center for Nanotechnology, Department of Metallurgy and Materials Engineering, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, 45650, Pakistan.
| | - Sadaf Batool
- Department of Nuclear Medicine, Nuclear Medicine, Oncology and Radiotherapy Institute (NORI), Islamabad, Pakistan
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14
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Ilie‐Mihai R, Stefan‐van Staden R, Magerusan L, Coros M, Pruneanu S. Enantioanalysis of tryptophan in whole blood samples using stochastic sensors—A screening test for gastric cancer. Chirality 2019; 32:215-222. [DOI: 10.1002/chir.23155] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Revised: 10/29/2019] [Accepted: 10/30/2019] [Indexed: 01/06/2023]
Affiliation(s)
- Ruxandra‐Maria Ilie‐Mihai
- Laboratory of Electrochemistry and PATLAB BucharestNational Institute of Research for Electrochmistry and Condensed Matter Buch arest Romania
- Faculty of Applied Chemistry and Materials ScienceUniversity Politehnica of Bucharest Bucharest Romania
| | - Raluca‐Ioana Stefan‐van Staden
- Laboratory of Electrochemistry and PATLAB BucharestNational Institute of Research for Electrochmistry and Condensed Matter Buch arest Romania
- Faculty of Applied Chemistry and Materials ScienceUniversity Politehnica of Bucharest Bucharest Romania
| | - Lidia Magerusan
- National Institute for Research and Development of Isotopic and Molecular Technologies Cluj‐Napoca Romania
| | - Maria Coros
- National Institute for Research and Development of Isotopic and Molecular Technologies Cluj‐Napoca Romania
| | - Stela Pruneanu
- National Institute for Research and Development of Isotopic and Molecular Technologies Cluj‐Napoca Romania
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15
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Varodi C, Pogacean F, Coros M, Rosu MC, Stefan-van Staden RI, Gal E, Tudoran LB, Pruneanu S, Mirel S. Detection of 8-Hydroxy-2'-Deoxyguanosine Biomarker with a Screen-Printed Electrode Modified with Graphene. SENSORS 2019; 19:s19194297. [PMID: 31590208 PMCID: PMC6806156 DOI: 10.3390/s19194297] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 09/25/2019] [Accepted: 09/29/2019] [Indexed: 12/13/2022]
Abstract
In this work we present the preparation of graphene material by exfoliation of graphite rods via pulses of current in electrolyte, containing a mixture of boric acid (0.05 M) and sodium chloride (0.05 M). The material was morphologically and structurally characterized by SEM/TEM/HR-TEM, XRD and FTIR techniques. TEM investigation of graphene flakes deposited onto carbon-coated grids allowed the visualization of thin and transparent regions, attributed to few-layer graphene (FLG), as well as thick and dark regions attributed to multi-layer graphene (MLG). The mixed composition of the material was additionally confirmed by XRD, which further indicated that the amount of FLG within the sample was around 83%, while MLG was around 17%. The performance of a screen-printed electrode (SPE) modified with graphene (SPE-Gr) was tested for 8-hydroxy-2′-deoxyguanosine detection. The graphene-modified electrode had a higher sensitivity in comparison with that of SPE, both in standard laboratory solutions (phosphate buffered saline—PBS) and in human saliva.
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Affiliation(s)
- Codruta Varodi
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Street, Cluj-Napoca 400293, Romania
| | - Florina Pogacean
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Street, Cluj-Napoca 400293, Romania
| | - Maria Coros
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Street, Cluj-Napoca 400293, Romania
| | - Marcela-Corina Rosu
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Street, Cluj-Napoca 400293, Romania
| | - Raluca-Ioana Stefan-van Staden
- Laboratory of Electrochemistry and PATLAB, National Institute of Research for Electrochemistry and Condensed Matter, 202 Splaiul Independentei Street, Bucharest-6 060021, Romania
- Faculty of Applied Chemistry and Material Science, Politehnica University of Bucharest, Bucharest RO-060042, Romania
| | - Emese Gal
- Department of Chemistry and Chemical Engineering, Hungarian Line of Study, Babes-Bolyai University, 11 Arany János St., Cluj-Napoca 400028, Romania
| | - Lucian-Barbu Tudoran
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Street, Cluj-Napoca 400293, Romania
- Faculty of Biology and Geology, Electron Microscopy Lab, Babes-Bolyai University, 5-7 Clinicilor St., Cluj-Napoca RO-400015, Romania
| | - Stela Pruneanu
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Street, Cluj-Napoca 400293, Romania.
| | - Simona Mirel
- Faculty of Pharmacy, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca 400349, Romania
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16
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Qiao J, Zhang L, Gao S, Li N. Facile Fabrication of Graphene-Supported Pt Electrochemical Sensor for Determination of Caffeine. Appl Biochem Biotechnol 2019; 190:529-539. [PMID: 31396885 DOI: 10.1007/s12010-019-03104-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Accepted: 07/18/2019] [Indexed: 01/07/2023]
Abstract
Because elevated levels of caffeine intake can cause many health complications, it is necessary to develop an accurate, simple, rapid, and cost-effective methodology to quantify caffeine in commonly consumed products. This article discusses electrochemical methods to synthesize platinum-graphene hybrid nanosheets (Pt-GR), and how these methods can be utilized to create a new modified electrode, the platinum-graphene nanohybrid glass carbon electrode (Pt-GR/GCE). The electrochemical behavior of caffeine on Pt-GR/GCE was studied by differential pulse voltammetry (DPV). The results showed that a sensitive oxidation peak was observed at 1.336 V in 0.01 mol L-1 H2SO4 buffer solution, indicating that the Pt-GR/GCE exhibited a good electrooxidation activity towards caffeine. The detection limit is 1.129 × 10-7 mol L-1. The modified electrode was applied to the determination of caffeine in real samples with satisfactory electrocatalytic results.
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Affiliation(s)
- Jie Qiao
- Department of Chemistry, Department of Biochemistry and Molecular Biology, College of Basic Medicine, Shanxi Medical University, Taiyuan, 030001, People's Republic of China.
| | - Liting Zhang
- Department of Chemistry, Department of Biochemistry and Molecular Biology, College of Basic Medicine, Shanxi Medical University, Taiyuan, 030001, People's Republic of China
| | - Shan Gao
- Department of Chemistry, Department of Biochemistry and Molecular Biology, College of Basic Medicine, Shanxi Medical University, Taiyuan, 030001, People's Republic of China
| | - Ningbo Li
- Department of Chemistry, Department of Biochemistry and Molecular Biology, College of Basic Medicine, Shanxi Medical University, Taiyuan, 030001, People's Republic of China
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17
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Pogacean F, Coros M, Mirel V, Magerusan L, Barbu-Tudoran L, Vulpoi A, Stefan-van Staden RI, Pruneanu S. Graphene-based materials produced by graphite electrochemical exfoliation in acidic solutions: Application to Sunset Yellow voltammetric detection. Microchem J 2019. [DOI: 10.1016/j.microc.2019.03.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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