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Umar A, Haque M, Ansari SG, Seo HK, Ibrahim AA, Alhamami MAM, Algadi H, Ansari ZA. Label-Free Myoglobin Biosensor Based on Pure and Copper-Doped Titanium Dioxide Nanomaterials. BIOSENSORS 2022; 12:1151. [PMID: 36551118 PMCID: PMC9775539 DOI: 10.3390/bios12121151] [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: 10/31/2022] [Revised: 12/02/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
In this study, using pure and copper-doped titanium dioxide (Cu-TiO2) nanostructures as the base matrix, enzyme-less label free myoglobin detection to identify acute myocardial infarction was performed and presented. The Cu-TiO2 nanomaterials were prepared using facile sol-gel method. In order to comprehend the morphologies, compositions, structural, optical, and electrochemical characteristics, the pure and Cu-TiO2 nanomaterials were investigated by several techniques which clearly revealed good crystallinity and high purity. To fabricate the enzyme-less label free biosensor, thick films of synthesized nanomaterials were applied to the surface of a pre-fabricated gold screen-printed electrode (Au-SPE), which serves as a working electrode to construct the myoglobin (Mb) biosensors. The interference study of the fabricated biosensor was also carried out with human serum albumin (HSA) and cytochrome c (cyt-c). Interestingly, the Cu-doped TiO2 nanomaterial-based Mb biosensor displayed a higher sensitivity of 61.51 µAcm-2/nM and a lower detection limit of 14 pM with a response time of less than 10 ms.
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Affiliation(s)
- Ahmad Umar
- Department of Chemistry, Faculty of Science and Arts, Najran University, Najran 11001, Saudi Arabia
- Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran 11001, Saudi Arabia
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA
| | - Mazharul Haque
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi 110025, India
| | - Shafeeque G. Ansari
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi 110025, India
| | - Hyung-Kee Seo
- School of Chemical Engineering, Jeonbuk National University, Jeonju 56212, Republic of Korea
| | - Ahmed A. Ibrahim
- Department of Chemistry, Faculty of Science and Arts, Najran University, Najran 11001, Saudi Arabia
- Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran 11001, Saudi Arabia
| | - Mohsen A. M. Alhamami
- Department of Chemistry, Faculty of Science and Arts, Najran University, Najran 11001, Saudi Arabia
| | - Hassan Algadi
- Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran 11001, Saudi Arabia
- Department of Electrical Engineering, College of Engineering, Najran University, Najran 11001, Saudi Arabia
| | - Zubaida A. Ansari
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi 110025, India
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Lima FMR, de Menezes AS, Maciel AP, Sinfrônio FSM, Kubota LT, Damos FS, Luz RCS. Zero-Biased Photoelectrochemical Detection of Cardiac Biomarker Myoglobin Based on CdSeS/ZnS Quantum Dots and Barium Titanate Perovskite. Molecules 2022; 27:molecules27154778. [PMID: 35897951 PMCID: PMC9330231 DOI: 10.3390/molecules27154778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 07/10/2022] [Accepted: 07/21/2022] [Indexed: 02/05/2023] Open
Abstract
Cardiovascular diseases are considered one of the leading causes of premature mortality of patients worldwide. Therefore, rapid diagnosis of these diseases is crucial to ensure the patient's survival. During a heart attack or severe muscle damage, myoglobin is rapidly released in the body to constitute itself as a precise biomarker of acute myocardial infarction. Thus, we described the photoelectrochemical immunosensor development to detect myoglobin. It was based on fluorine-doped tin oxide modified with CdSeS/ZnSe quantum dots and barium titanate (BTO), designated as CdSeS/ZnSQDS/BTO. It was characterized by scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDX), transmission electron microscopy (TEM), X-ray diffraction (XRD), electrochemical impedance spectroscopy (EIS), and amperometry. The anodic photocurrent at the potential of 0 V (vs. Ag/AgCl) and pH 7.4 was found linearly related to the myoglobin (Mb) concentration from 0.01 to 1000 ng mL-1. Furthermore, the immunosensor showed an average recovery rate of 95.7-110.7% for the determination of myoglobin.
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Affiliation(s)
- Fernanda M. R. Lima
- Department of Chemistry, Federal University of Maranhão, São Luís 65080-805, Brazil; (F.M.R.L.); (A.P.M.)
| | - Alan S. de Menezes
- Department of Physics, Federal University of Maranhão, São Luís 65080-805, Brazil;
| | - Adeilton P. Maciel
- Department of Chemistry, Federal University of Maranhão, São Luís 65080-805, Brazil; (F.M.R.L.); (A.P.M.)
| | | | - Lauro T. Kubota
- Institute of Chemistry, State University of Campinas, Campinas 13083-970, Brazil;
| | - Flávio S. Damos
- Department of Chemistry, Federal University of Maranhão, São Luís 65080-805, Brazil; (F.M.R.L.); (A.P.M.)
- Correspondence: (F.S.D.); (R.C.S.L.)
| | - Rita C. S. Luz
- Department of Chemistry, Federal University of Maranhão, São Luís 65080-805, Brazil; (F.M.R.L.); (A.P.M.)
- Correspondence: (F.S.D.); (R.C.S.L.)
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Al Fatease A, Haque M, Umar A, Ansari SG, Alhamhoom Y, Muhsinah AB, Mahnashi MH, Guo W, Ansari ZA. Label-Free Electrochemical Sensor Based on Manganese Doped Titanium Dioxide Nanoparticles for Myoglobin Detection: Biomarker for Acute Myocardial Infarction. Molecules 2021; 26:4252. [PMID: 34299527 PMCID: PMC8306677 DOI: 10.3390/molecules26144252] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 07/08/2021] [Accepted: 07/09/2021] [Indexed: 11/23/2022] Open
Abstract
A label free electrochemical sensor based on pure titanium oxide and manganese (Mn)-doped titanium oxide (TiO2) nanoparticles are fabricated and characterized for the sensitive detection of myoglobin (Mb) levels to analyze the cardiovascular infarction. Pristine and Mn-doped TiO2 nanoparticles were synthesized via the sol-gel method and characterized in order to understand their structure, morphologies, composition and optical properties. The structural properties revealed that the pure- and doped-TiO2 nanoparticles possess different TiO2 planes. FTIR studies confirm the formation of metal oxide nanoparticles by exhibiting a well-defined peak in the range of 600-650 cm-1. The values of the optical band gap, estimated from UV-Vis spectroscopy, are decreased for the Mn-doped TiO2 nanoparticles. UV-Vis spectra in the presence of myoglobin (Mb) indicated interaction between the TiO2 nanoparticles and myoglobin. The SPE electrodes were then fabricated by printing powder film over the working electrode and tested for label-free electrochemical detection of myoglobin (Mb) in the concentration range of 0-15 nM Mb. The fabricated electrochemical sensor exhibited a high sensitivity of 100.40 μA-cm-2/nM with a lowest detection limit of 0.013 nM (0.22 ng/mL) and a response time of ≤10 ms for sample S3. An interference study with cyt-c and Human Serum Albumin (HSA) of the sensors show the selective response towards Mb in 1:1 mixture.
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Affiliation(s)
- Adel Al Fatease
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, Abha 62529, Saudi Arabia;
| | - Mazharul Haque
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (Central University), New Delhi 110025, India; (M.H.); (S.G.A.)
| | - Ahmad Umar
- Department of Chemistry, Faculty of Science and Arts, Najran University, Najran 11001, Saudi Arabia
- Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran 11001, Saudi Arabia
| | - Shafeeque G. Ansari
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (Central University), New Delhi 110025, India; (M.H.); (S.G.A.)
| | - Yahya Alhamhoom
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, Abha 62529, Saudi Arabia;
| | - Abdullatif Bin Muhsinah
- Department of Pharmacognosy, College of Pharmacy, King Khalid University, Abha 61441, Saudi Arabia;
| | - Mater H. Mahnashi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran 29613, Saudi Arabia;
| | - Wenjuan Guo
- Institute of Surface Analysis and Chemical Biology, University of Jinan, Jinan 250022, China;
| | - Zubaida A. Ansari
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (Central University), New Delhi 110025, India; (M.H.); (S.G.A.)
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Samajdar RN, Asampille G, Atreya HS, Bhattacharyya AJ. Hemoglobin Dynamics in Solution vis-à-vis Under Confinement: An Electrochemical Perspective. J Phys Chem B 2020; 124:5771-5779. [PMID: 32551673 DOI: 10.1021/acs.jpcb.0c02372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Confining heme protein in silico often leads to beneficial functionalities such as an enhanced electrochemical response from the heme center. This can be harnessed to design effective biosensors for medical diagnostics. Proteins under confinement, surface confinement on the electrode to be precise, have more ordered and monodisperse structure compared to the protein in bulk solution. As the electrochemical response of a protein comes from those protein molecules that are confined within the electrical double layer across the electrode-electrolyte interface, it is expected that restriction of conformational fluctuations of the polymeric protein will help in enhancement of the electrochemical response. This is probably the prima facie reason for electrochemical response enhancement under confinement. We examine the dynamic features of hemoglobin under confinement vis-à-vis that in bulk solution. We use a variety of spectroscopic techniques across a wide time-space window to establish the following facts: (a) hardening of the protein polypeptide backbone, (b) slowing down of protein diffusion, (c) increase in relaxation times in NMR, and (d) slowing down of dielectric relaxation times under confinement. This indicates an overall quenching of protein dynamics when the protein is confined inside silica matrix. Thus, we hypothesize that along with retention of secondary structure, this quenching of dynamics contributes to the enhancement of electrochemical response observed.
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Affiliation(s)
- Rudra N Samajdar
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India
| | | | - Hanudatta S Atreya
- NMR Research Center, Indian Institute of Science, Bangalore 560012, India
| | - Aninda J Bhattacharyya
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India
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Samajdar RN, Kumar C, Viswanath P, Bhattacharyya AJ. Studying Hemoglobin and a Bare Metal–Porphyrin Complex Immobilized on Functionalized Silicon Surfaces Using Synchrotron X-ray Reflectivity. J Phys Chem B 2019; 123:7492-7503. [DOI: 10.1021/acs.jpcb.9b03085] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Rudra N. Samajdar
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bengaluru 560012, India
| | - Chandan Kumar
- Center for Nano and Soft Matter Science, Bengaluru 560013, India
| | - P. Viswanath
- Center for Nano and Soft Matter Science, Bengaluru 560013, India
| | - Aninda J. Bhattacharyya
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bengaluru 560012, India
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Keçili R. Selective Recognition of Myoglobin in Biological Samples Using Molecularly Imprinted Polymer-Based Affinity Traps. Int J Anal Chem 2018; 2018:4359892. [PMID: 30174693 PMCID: PMC6106809 DOI: 10.1155/2018/4359892] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 05/21/2018] [Accepted: 07/11/2018] [Indexed: 11/18/2022] Open
Abstract
The current work demonstrates the design, characterization, and preparation of molecularly imprinted microspheres for the selective detection of myoglobin in serum samples. The suspension polymerization approach was applied for the preparation of myoglobin imprinted microspheres. For this purpose, N-methacryloylamino folic acid-Nd3+ (MAFol- Nd3+) was chosen as the complex functional monomer. The optimization studies were performed changing the medium pH, temperature, and myoglobin concentration. pH 7.0 was determined as the optimum value where the prepared imprinted microspheres displayed maximum binding for myoglobin. The maximum binding capacity was achieved as 623 mgg-1. In addition, the selectivity studies were conducted. The results confirmed that the imprinted microspheres showed great selectivity towards myoglobin in the existence of hemoglobin, cytochrome c, and lysozyme which were chosen as potentially competing proteins.
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Affiliation(s)
- Rüstem Keçili
- Anadolu University, Yunus Emre Vocational School of Health Services, Department of Medical Services and Techniques, 26470 Eskisehir, Turkey
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Bakirhan NK, Ozcelikay G, Ozkan SA. Recent progress on the sensitive detection of cardiovascular disease markers by electrochemical-based biosensors. J Pharm Biomed Anal 2018; 159:406-424. [PMID: 30036704 DOI: 10.1016/j.jpba.2018.07.021] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 07/07/2018] [Accepted: 07/16/2018] [Indexed: 12/15/2022]
Abstract
Cardiovascular disease is the most reason for deaths in all over the world. Hence, biomarkers of cardiovascular diseases are very crucial for diagnosis and management process. Biomarker detection demand is opened the important way in biosensor development field. Rapid, cheap, portable, precise, selective and sensitive biomarker sensing devices are needed at this point to detect and predict disease. A cardiac biomarker can be orderable as C-reactive protein, troponin I or T, myoglobin, tumor necrosis factor alpha, interleukin-6, interleukin-1, lipoprotein-associated phospholipase, low-density lipoprotein and myeloperoxidase. They are used for prediction of cardiovascular diseases. There are many methods for early diagnosis of cardiovascular diseases, but these have long time process and expensive devices. In recent studies, different biosensors have been developed to remove the problems in this field. Electrochemical devices and developed biosensors have many superiorities than others such as low cost, mobile, reliable, repeatable, need a little amount of solution. In this review, recent studies were presented as details for cardiovascular disease biomarkers detection using electrochemical methods.
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Affiliation(s)
- Nurgul K Bakirhan
- Hitit University, Faculty of Arts and Sciences, Department of Chemistry, Corum, Turkey
| | - Goksu Ozcelikay
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, Tandogan, Ankara, Turkey
| | - Sibel A Ozkan
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, Tandogan, Ankara, Turkey.
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8
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Cheng Y, Yang H, Yang Y, Huang J, Wu K, Chen Z, Wang X, Lin C, Lai Y. Progress in TiO 2 nanotube coatings for biomedical applications: a review. J Mater Chem B 2018; 6:1862-1886. [PMID: 32254353 DOI: 10.1039/c8tb00149a] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Titanium dioxide nanotubes (TNTs) have drawn wide attention and been extensively applied in the field of biomedicine, due to their large specific surface area, good corrosion resistance, excellent biocompatibility, and enhanced bioactivity. This review describes the preparation of TNTs and the surface modification that entrust the nanotubes with better antibacterial property and enhanced osteoblast adhesion, proliferation, and differentiation. Considering the contact between TNTs' surface and surrounding tissues after implantation, the interactions between TNTs (with properties including their diameter, length, wettability, and crystalline phase) and proteins, platelets, bacteria, and cells are illustrated. The state of the art in the applications of TNTs in dentistry, orthopedic implants, and cardiovascular stents are introduced. In particular, the application of TNTs in biosensing has attracted much attention due to its ability for the rapid diagnosis of diseases. Finally, the difficulties and challenges in the practical application of TNTs are also discussed.
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Affiliation(s)
- Yan Cheng
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, P. R. China.
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9
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Samajdar RN, Manogaran D, Yashonath S, Bhattacharyya AJ. Using porphyrin–amino acid pairs to model the electrochemistry of heme proteins: experimental and theoretical investigations. Phys Chem Chem Phys 2018; 20:10018-10029. [DOI: 10.1039/c8cp00605a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Deconstructing the complex electrochemistry of heme proteins into simpler heme–amino acid interactions.
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Affiliation(s)
- Rudra N. Samajdar
- Solid State and Structural Chemistry Unit
- Indian Institute of Science
- Bangalore 560012
- India
| | - Dhivya Manogaran
- Solid State and Structural Chemistry Unit
- Indian Institute of Science
- Bangalore 560012
- India
| | - S. Yashonath
- Solid State and Structural Chemistry Unit
- Indian Institute of Science
- Bangalore 560012
- India
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10
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Matta DP, Tripathy S, Krishna Vanjari SR, Sharma CS, Singh SG. An ultrasensitive label free nanobiosensor platform for the detection of cardiac biomarkers. Biomed Microdevices 2017; 18:111. [PMID: 27864741 DOI: 10.1007/s10544-016-0126-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
We report the fabrication of a label free nano biosensor platform comprising single nanofiber that is derived out of multi-walled carbon nanotubes (MWCNTs) embedded SU-8 photoresist, for the detection of three important human cardiac biomarkers viz., myoglobin (Myo), cardiac Troponin I (cTn I) and Creatine Kinase-MB (CK-MB). These composite nanofibers were synthesized using electrospinning process. Single nanofibers were aligned between pairs of electrodes in-situ during the electrospinning process. The target proteins were detected using chemiresistive detection methodology. Each biomarker was detected using a specific, single, aligned nanofiber, functionalized with its corresponding monoclonal antibody. Chemiresistive detection involves measuring the change in conductance of the functionalized nanofibers upon the binding of the targeted antigen. The minimum detection limits of Myo, CK-MB and cTn I were experimentally found out to be as low as 6, 20 and 50 fg/ml respectively. No response was observed when the nanofibers were exposed to a non-specific protein, demonstrating excellent specificity to the targeted detection. These MWCNTs embedded SU-8 nanofibers based nanobiosensor platform shows great promise in the detection of cardiac markers and other proteins as they have fast response time, high sensitivity and good specificity.
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Affiliation(s)
- Durga Prakash Matta
- Department of Electrical Engineering, Indian Institute of Technology Hyderabad, Telangana, India
| | - Suryasnata Tripathy
- Department of Electrical Engineering, Indian Institute of Technology Hyderabad, Telangana, India
| | | | - Chandra Shekhar Sharma
- Department of Chemical Engineering, Indian Institute of Technology Hyderabad, Telangana, India
| | - Shiv Govind Singh
- Department of Electrical Engineering, Indian Institute of Technology Hyderabad, Telangana, India
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Affiliation(s)
- Khalil Khadim Hussain
- Department of Chemistry and Institute of BioPhysio Sensor Technology (IBST); Pusan National University; Busan 46241 S. Korea
| | - Jong-Min Moon
- Department of Chemistry and Institute of BioPhysio Sensor Technology (IBST); Pusan National University; Busan 46241 S. Korea
| | - Deog-Su Park
- Institute of BioPhysio Sensor Technology (IBST); Pusan National University; Busan 46241 S. Korea
| | - Yoon-Bo Shim
- Department of Chemistry and Institute of BioPhysio Sensor Technology (IBST); Pusan National University; Busan 46241 S. Korea
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12
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Pur MRK, Hosseini M, Faridbod F, Ganjali MR. Highly sensitive label-free electrochemiluminescence aptasensor for early detection of myoglobin, a biomarker for myocardial infarction. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2385-y] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Sensitive point-of-care monitoring of cardiac biomarker myoglobin using aptamer and ubiquitous personal glucose meter. Biosens Bioelectron 2014; 64:161-4. [PMID: 25216451 DOI: 10.1016/j.bios.2014.08.079] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Revised: 08/08/2014] [Accepted: 08/27/2014] [Indexed: 11/20/2022]
Abstract
Myoglobin (Myo), which is one of the early markers to increase after acute myocardial infarction (AMI), plays a major role in urgent diagnosis of cardiovascular diseases. Hence, monitoring of Myo in point-of-care is fundamental. Here, a novel assay for sensitive and selective detection of Myo was introduced using a personal glucose meter (PGM) as readout. In the presence of Myo, the anti-Myo antibody immobilized on the surface of polystyrene microplate could capture the target Myo. Then the selected aptamer against Myo, which was obtained using our screening process, was conjugated with invertase, and such aptamer-invertase conjugates bound to the immobilized Myo due to the Myo/aptamer interaction. Subsequently, the resulting "antibody-Myo-aptamer sandwich" complex containing invertase conjugates hydrolyzed sucrose into glucose, thus establishing direct correlation between the Myo concentration and the amount of glucose measured by PGM. By employing the enzyme amplification, as low as 50 pM Myo could be detected. This assay also showed high selectivity for Myo and was successfully used for Myo detection in serum samples. This work may provide a simple but reliable tool for early diagnosis of AMI in the world, especially in developing countries.
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Mandal SS, Navratna V, Sharma P, Gopal B, Bhattacharyya AJ. Titania nanotube-modified screen printed carbon electrodes enhance the sensitivity in the electrochemical detection of proteins. Bioelectrochemistry 2014; 98:46-52. [DOI: 10.1016/j.bioelechem.2014.03.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Revised: 02/19/2014] [Accepted: 03/10/2014] [Indexed: 10/25/2022]
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15
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Mishra SK, Srivastava AK, Kumar D, Rajesh R. Bio-functionalized Pt nanoparticles based electrochemical impedance immunosensor for human cardiac myoglobin. RSC Adv 2014. [DOI: 10.1039/c4ra00105b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
We report the covalent immobilization of three-dimensional carboxyl-functionalized Pt(MPA) nanoparticles with myoglobin protein antibody by carbodiimide coupling reaction deposited onto an indium-tin-oxide-coated glass plate for the construction of a bioelectrode.
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Affiliation(s)
- Sujeet K. Mishra
- CSIR-National Physical Laboratory
- New Delhi-110012, India
- Department of Applied Chemistry
- Delhi Technological University
- Delhi-110042, India
| | | | - Devendra Kumar
- Department of Applied Chemistry
- Delhi Technological University
- Delhi-110042, India
| | - Rajesh Rajesh
- CSIR-National Physical Laboratory
- New Delhi-110012, India
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