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Gallo-Orive Á, Moreno-Guzmán M, Sanchez-Paniagua M, Montero-Calle A, Barderas R, Escarpa A. Gold Nanoparticle-Decorated Catalytic Micromotor-Based Aptassay for Rapid Electrochemical Label-Free Amyloid-β42 Oligomer Determination in Clinical Samples from Alzheimer's Patients. Anal Chem 2024; 96:5509-5518. [PMID: 38551492 PMCID: PMC11007680 DOI: 10.1021/acs.analchem.3c05665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 02/08/2024] [Accepted: 03/11/2024] [Indexed: 04/10/2024]
Abstract
Micromotor (MM) technology offers a valuable and smart on-the-move biosensing microscale approach in clinical settings where sample availability is scarce in the case of Alzheimer's disease (AD). Soluble amyloid-β protein oligomers (AβO) (mainly AβO42) that circulate in biological fluids have been recognized as a molecular biomarker and therapeutic target of AD due to their high toxicity, and they are correlated much more strongly with AD compared to the insoluble Aβ monomers. A graphene oxide (GO)-gold nanoparticles (AuNPs)/nickel (Ni)/platinum nanoparticles (PtNPs) micromotors (MMGO-AuNPs)-based electrochemical label-free aptassay is proposed for sensitive, accurate, and rapid determination of AβO42 in complex clinical samples such as brain tissue, cerebrospinal fluid (CSF), and plasma from AD patients. An approach that implies the in situ formation of AuNPs on the GO external layer of tubular MM in only one step during MM electrosynthesis was performed (MMGO-AuNPs). The AβO42 specific thiolated-aptamer (AptAβO42) was immobilized in the MMGO-AuNPs via Au-S interaction, allowing for the selective recognition of the AβO42 (MMGO-AuNPs-AptAβO42-AβO42). AuNPs were smartly used not only to covalently bind a specific thiolated-aptamer for the design of a label-free electrochemical aptassay but also to improve the final MM propulsion performance due to their catalytic activity (approximately 2.0× speed). This on-the-move bioplatform provided a fast (5 min), selective, precise (RSD < 8%), and accurate quantification of AβO42 (recoveries 94-102%) with excellent sensitivity (LOD = 0.10 pg mL-1) and wide linear range (0.5-500 pg mL-1) in ultralow volumes of the clinical sample of AD patients (5 μL), without any dilution. Remarkably, our MM-based bioplatform demonstrated the competitiveness for the determination of AβO42 in the target samples against the dot blot analysis, which requires more than 14 h to provide qualitative results only. It is also important to highlight its applicability to the potential analysis of liquid biopsies as plasma and CSF samples, improving the reliability of the diagnosis given the heterogeneity and temporal complexity of neurodegenerative diseases. The excellent results obtained demonstrate the analytical potency of our approach as a future tool for clinical/POCT (Point-of-care testing) routine scenarios.
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Affiliation(s)
- Álvaro Gallo-Orive
- Department
of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, 28802 Alcalá de Henares, Madrid, Spain
- Department
of Chemistry in Pharmaceutical Sciences, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramón y Cajal s/n, 28040 Moncloa-Aravaca, Madrid, Spain
| | - María Moreno-Guzmán
- Department
of Chemistry in Pharmaceutical Sciences, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramón y Cajal s/n, 28040 Moncloa-Aravaca, Madrid, Spain
| | - Marta Sanchez-Paniagua
- Department
of Chemistry in Pharmaceutical Sciences, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramón y Cajal s/n, 28040 Moncloa-Aravaca, Madrid, Spain
| | - Ana Montero-Calle
- Chronic
Disease Programme, UFIEC, Carlos III Health
Institute, 28220 Majadahonda, Madrid, Spain
| | - Rodrigo Barderas
- Chronic
Disease Programme, UFIEC, Carlos III Health
Institute, 28220 Majadahonda, Madrid, Spain
| | - Alberto Escarpa
- Department
of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, 28802 Alcalá de Henares, Madrid, Spain
- Chemical
Research Institute “Andrés M. Del Rio”, University of Alcalá, 28802 Alcalá de Henares, Madrid, Spain
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Gordón Pidal JM, Moreno-Guzmán M, Montero-Calle A, Valverde A, Pingarrón JM, Campuzano S, Calero M, Barderas R, López MÁ, Escarpa A. Micromotor-based electrochemical immunoassays for reliable determination of amyloid-β (1-42) in Alzheimer's diagnosed clinical samples. Biosens Bioelectron 2024; 249:115988. [PMID: 38194814 DOI: 10.1016/j.bios.2023.115988] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 12/22/2023] [Accepted: 12/27/2023] [Indexed: 01/11/2024]
Abstract
Alzheimer's disease (AD), in addition to being the most common cause of dementia, is very difficult to diagnose, with the 42-amino acid form of Aβ (Aβ-42) being one of the main biomarkers used for this purpose. Despite the enormous efforts made in recent years, the technologies available to determine Aβ-42 in human samples require sophisticated instrumentation, present high complexity, are sample and time-consuming, and are costly, highlighting the urgent need not only to develop new tools to overcome these limitations but to provide an early detection and treatment window for AD, which is a top-challenge. In recent years, micromotor (MM) technology has proven to add a new dimension to clinical biosensing, enabling ultrasensitive detections in short times and microscale environments. To this end, here an electrochemical immunoassay based on polypyrrole (PPy)/nickel (Ni)/platinum nanoparticles (PtNPs) MM is proposed in a pioneering manner for the determination of Aβ-42 in left prefrontal cortex brain tissue, cerebrospinal fluid, and plasma samples from patients with AD. MM combines the high binding capacity of their immunorecognition external layer with self-propulsion through the catalytic generation of oxygen bubbles in the internal layer due to decomposition of hydrogen peroxide as fuel, allowing rapid bio-detection (15 min) of Aβ-42 with excellent selectivity and sensitivity (LOD = 0.06 ng/mL). The application of this disruptive technology to the analysis of just 25 μL of the three types of clinical samples provides values concordant with the clinical values reported, thus confirming the potential of the MM approach to assist in the reliable, simple, fast, and affordable diagnosis of AD by determining Aβ-42.
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Affiliation(s)
- José M Gordón Pidal
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Faculty of Sciences, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, Alcalá de Henares, 28802, Madrid, Spain
| | - María Moreno-Guzmán
- Department of Chemistry in Pharmaceutical Sciences, Analytical Chemistry, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramón y Cajal, s/n, 28040, Madrid, Spain
| | - Ana Montero-Calle
- Chronic Disease Programme, UFIEC, Carlos III Health Institute, Majadahonda, Madrid, 28220, Spain
| | - Alejandro Valverde
- Department of Analytical Chemistry, Faculty of Chemistry Science, Complutense University of Madrid, Pza. de las Ciencias 2, Madrid, 28040, Spain
| | - José M Pingarrón
- Department of Analytical Chemistry, Faculty of Chemistry Science, Complutense University of Madrid, Pza. de las Ciencias 2, Madrid, 28040, Spain
| | - Susana Campuzano
- Department of Analytical Chemistry, Faculty of Chemistry Science, Complutense University of Madrid, Pza. de las Ciencias 2, Madrid, 28040, Spain.
| | - Miguel Calero
- Chronic Disease Programme, UFIEC, Carlos III Health Institute, Majadahonda, Madrid, 28220, Spain
| | - Rodrigo Barderas
- Chronic Disease Programme, UFIEC, Carlos III Health Institute, Majadahonda, Madrid, 28220, Spain.
| | - Miguel Ángel López
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Faculty of Sciences, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, Alcalá de Henares, 28802, Madrid, Spain; Chemical Research Institute "Andrés M. Del Rio", University of Alcalá, Madrid, Spain
| | - Alberto Escarpa
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Faculty of Sciences, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, Alcalá de Henares, 28802, Madrid, Spain; Chemical Research Institute "Andrés M. Del Rio", University of Alcalá, Madrid, Spain.
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Gordón Pidal JM, Arruza L, Moreno-Guzmán M, López MÁ, Escarpa A. Micromotor-based dual aptassay for early cost-effective diagnosis of neonatal sepsis. Mikrochim Acta 2024; 191:106. [PMID: 38240873 PMCID: PMC10798920 DOI: 10.1007/s00604-023-06134-x] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Accepted: 12/11/2023] [Indexed: 01/22/2024]
Abstract
Given the long-life expectancy of the newborn, research aimed at improving sepsis diagnosis and management in this population has been recognized as cost-effective, which at early stages continues to be a tremendous challenge. Despite there is not an ideal-specific biomarker, the simultaneous detection of biomarkers with different behavior during an infection such as procalcitonin (PCT) as high specificity biomarker with one of the earliest biomarkers in sepsis as interleukin-6 (IL-6) increases diagnostic performance. This is not only due to their high positive predictive value but also, since it can also help the clinician to rule out infection and thus avoid the use of antibiotics, due to their high negative predictive value. To this end, we explore a cutting-edge micromotor (MM)-based OFF-ON dual aptassay for simultaneous determination of both biomarkers in 15 min using just 2 μL of sample from low-birth-weight neonates with gestational age less than 32 weeks and birthweight below 1000 g with clinical suspicion of late-onset sepsis. The approach reached the high sensitivities demanded in the clinical scenario (LODPCT = 0.003 ng/mL, LODIL6 = 0.15 pg/mL) with excellent correlation performance (r > 0.9990, p < 0.05) of the MM-based approach with the Hospital method for both biomarkers during the analysis of diagnosed samples and reliability (Er < 6% for PCT, and Er < 4% for IL-6). The proposed approach also encompasses distinctive technical attributes in a clinical scenario since its minimal sample volume requirements and expeditious results compatible with few easy-to-obtain drops of heel stick blood samples from newborns admitted to the neonatal intensive care unit. This would enable the monitoring of both sepsis biomarkers within the initial hours after the manifestation of symptoms in high-risk neonates as a valuable tool in facilitating prompt and well-informed decisions about the initiation of antibiotic therapy.These results revealed the asset behind micromotor technology for multiplexing analysis in diagnosing neonatal sepsis, opening new avenues in low sample volume-based diagnostics.
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Affiliation(s)
- José M Gordón Pidal
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Faculty of Sciences, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, Alcalá de Henares, 28802, Madrid, Spain
| | - Luis Arruza
- Department of Neonatology, Instituto del Niño y del Adolescente, Hospital Clínico San Carlos-IdISSC, 28040, Madrid, Spain
| | - María Moreno-Guzmán
- Department of Chemistry in Pharmaceutical Sciences, Analytical Chemistry, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramón y Cajal, S/N, 28040, Madrid, Spain
| | - Miguel Ángel López
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Faculty of Sciences, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, Alcalá de Henares, 28802, Madrid, Spain.
- Chemical Research Institute "Andrés M. Del Rio", University of Alcalá, Madrid, Spain.
| | - Alberto Escarpa
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Faculty of Sciences, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, Alcalá de Henares, 28802, Madrid, Spain.
- Chemical Research Institute "Andrés M. Del Rio", University of Alcalá, Madrid, Spain.
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Grau J, Moreno-Guzmán M, Arruza L, López MÁ, Escarpa A, Chisvert A. Analysis of microsamples by miniaturized magnetic-based pipette tip microextraction: determination of free cortisol in serum and urine from very low birth weight preterm newborns. Analyst 2023; 148:1050-1057. [PMID: 36723348 DOI: 10.1039/d2an02085h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Miniaturized magnetic-based pipette tip microextraction is presented as a sample preparation approach for microsamples. It involves quick dispersion of a diminutive amount of a magnetic sorbent material in a low-volume sample (10 μL) to entrap the target analytes. Next, the dispersion is aspirated using a (semi)automatic pipette through a pipette tip with a small cubic neodymium magnet inside, which retrieves the magnetic sorbent containing the analytes. After discarding the rest of the sample, the sorbent is properly rinsed by aspirating/dispensing deionized water, and then, the analytes are eluted by aspirating/dispensing an appropriate solvent. This approach was employed for the determination of free cortisol in serum and urine from very low birth weight preterm newborns, a vulnerable patient group who present low availability for sampling biological fluids. A magnetic immunosorbent made of a cortisol antibody was employed for the selective extraction, followed by liquid chromatography-tandem mass spectrometry. Good analytical features were obtained, such as limits of detection and quantification of 0.08 and 0.27 ng mL-1, respectively, linearity up to 50 ng mL-1 (R2 > 0.999), RSD values under 15% and relative recoveries between 91 and 111%. The cross-reactivity with other glucocorticoids (i.e., cortisone and prednisolone) was evaluated to show the selectivity of the extraction. Finally, the method applicability was demonstrated towards the determination of free cortisol in the serum and urine samples from low birth weight preterm newborns.
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Affiliation(s)
- José Grau
- GICAPC Research Group, Department of Analytical Chemistry, University of Valencia, 46100 Burjassot, Valencia, Spain.
| | - María Moreno-Guzmán
- Department of Chemistry in Pharmaceutical Sciences, Analytical Chemistry, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain
| | - Luis Arruza
- Division of Neonatology, Child and Teenager Institute, Clínico San Carlos Hospital IdISCC, Madrid, Spain
| | - Miguel Ángel López
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcala, Ctra. Madrid-Barcelona, Km. 33.600, Alcalá de Henares, 28802 Madrid, Spain. .,Chemical Research Institute "Andres M. Del Río", University of Alcala, Ctra. Madrid-Barcelona, Km. 33.600, Alcala de Henares, 28802 Madrid, Spain
| | - Alberto Escarpa
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcala, Ctra. Madrid-Barcelona, Km. 33.600, Alcalá de Henares, 28802 Madrid, Spain. .,Chemical Research Institute "Andres M. Del Río", University of Alcala, Ctra. Madrid-Barcelona, Km. 33.600, Alcala de Henares, 28802 Madrid, Spain
| | - Alberto Chisvert
- GICAPC Research Group, Department of Analytical Chemistry, University of Valencia, 46100 Burjassot, Valencia, Spain.
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Gordón J, Arruza L, Ibáñez MD, Moreno-Guzmán M, López MÁ, Escarpa A. Addition to On the Move-Sensitive Fluorescent Aptassay on Board Catalytic Micromotors for the Determination of Interleukin-6 in Ultra-Low Serum Volumes for Neonatal Sepsis Diagnostics. ACS Sens 2023; 8:403. [PMID: 36622045 PMCID: PMC9887646 DOI: 10.1021/acssensors.2c02731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Gordón J, Arruza L, Ibáñez MD, Moreno-Guzmán M, López MÁ, Escarpa A. On the Move-Sensitive Fluorescent Aptassay on Board Catalytic Micromotors for the Determination of Interleukin-6 in Ultra-Low Serum Volumes for Neonatal Sepsis Diagnostics. ACS Sens 2022; 7:3144-3152. [PMID: 36198198 PMCID: PMC9623581 DOI: 10.1021/acssensors.2c01635] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A graphene oxide/nickel/platinum nanoparticle micromotor (MM)-based fluorescent aptassay is proposed to determine interleukin-6 (IL-6) in serum samples from low-birth-weight infants (gestational age of less than 32 weeks and birthweight below 1000 g) with sepsis suspicion. In this kind of patients, IL-6 has demonstrated good sensitivity and specificity for the diagnosis of sepsis, both for early and late onset sepsis. The approach was based on the adsorption of the aptamer for IL-6 tagged with 6-FAM as a fluorescent label (AptIL-6, λem = 520 nm) on the graphene oxide external layer (MMGO-AptIL-6) inducing fluorescence quenching (OFF state) and a subsequent on-the-move affinity recognition of IL-6 from AptIL-6 (IL-6-AptIL-6 complex) recovering the fluorescence (ON state). An aptamer against IL-6 was selected and developed by the systematic evolution of ligands by exponential enrichment technology. This approach displayed a suitable linear range of 0.07-1000 pg mL-1 (r = 0.995) covering the cut-off and clinical practice levels, allowing direct determination without any dilution and simplifying the analysis as well as exhibiting an excellent sensitivity (LOD = 0.02 pg mL-1) in ultralow volumes of diagnostic clinical samples (2 μL). A high agreement between IL-6 levels obtained from our MM-based approach and the method used by the Hospital was obtained (relative error < 3%). The MM-based aptassay is competitive in comparison with that of the Hospital, in terms of a significant reduction of the sample volume (15 times less) and enhanced sensitivity, employing similar analysis times. These results position MM technology with enough potential to achieve high sensitivities in low sample volumes, opening new avenues in diagnosis based on low sample volumes.
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Affiliation(s)
- José Gordón
- Department
of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, Alcalá de Henares, 28802Madrid, Spain
| | - Luis Arruza
- Department
of Neonatology, Instituto del Niño
y del Adolescente, Hospital
Clínico San Carlos-IdISSC, 28040Madrid, Spain
| | - María Dolores Ibáñez
- Clinical
Laboratory Department, Instituto de Investigación
Sanitaria San Carlos (IdISSC), 28040Madrid, Spain
| | - María Moreno-Guzmán
- Department
of Chemistry in Pharmaceutical Sciences, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramón y Cajal s/n, 28040Madrid, Spain
| | - Miguel Ángel López
- Department
of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, Alcalá de Henares, 28802Madrid, Spain,Chemical
Research Institute “Andres M. Del Rio”, University of Alcalá, 28871Madrid, Spain,
| | - Alberto Escarpa
- Department
of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, Alcalá de Henares, 28802Madrid, Spain,Chemical
Research Institute “Andres M. Del Rio”, University of Alcalá, 28871Madrid, Spain,
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Valverde A, Gordón Pidal JM, Montero-Calle A, Arévalo B, Serafín V, Calero M, Moreno-Guzmán M, López MÁ, Escarpa A, Yáñez-Sedeño P, Barderas R, Campuzano S, Pingarrón JM. Paving the way for reliable Alzheimer's disease blood diagnosis by quadruple electrochemical immunosensing. ChemElectroChem 2022. [DOI: 10.1002/celc.202200055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Alejandro Valverde
- Universidad Complutense de Madrid Facultad de Ciencias Quimicas Analytical Chemistry SPAIN
| | - José M. Gordón Pidal
- Universidad de Alcala Analytical Chemistry, Physical Chemistry and Chemical Engineering SPAIN
| | - Ana Montero-Calle
- Instituto de Salud Carlos III Chronic Disease Programme, UFIEC SPAIN
| | - Beatriz Arévalo
- Universidad Complutense de Madrid Facultad de Ciencias Quimicas Analytical Chemistry SPAIN
| | - Verónica Serafín
- Universidad Complutense de Madrid Facultad de Ciencias Quimicas Analytical Chemistry SPAIN
| | | | | | - Miguel Ángel López
- Universidad de Alcala Analytical Chemsitry, Physical Chemistry and Chemical Engineering SPAIN
| | - Alberto Escarpa
- Universidad de Alcala Analytical Chemistry, Physical Chemistry and Chemical Engineering SPAIN
| | - Paloma Yáñez-Sedeño
- Universidad Complutense de Madrid Facultad de Ciencias Quimicas Analytical Chemistry SPAIN
| | - Rodrigo Barderas
- Instituto de Salud Carlos III Chronic Disease Programme, UFIEC SPAIN
| | - Susana Campuzano
- Universidad Complutense de Madrid Facultad de Ciencias Quimicas Analytical Chemistry SPAIN
| | - José Manuel Pingarrón
- Universidad Complutense de Madrid Química Analítica Av. Complutense s/n 28040 Madrid SPAIN
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Molinero-Fernández Á, Moreno-Guzmán M, López MÁ, Escarpa A. An array-based electrochemical magneto-immunosensor for early neonatal sepsis diagnostic: Fast and accurate determination of C-reactive protein in whole blood and plasma samples. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104913] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Molinero-Fernández Á, Moreno-Guzmán M, López MÁ, Escarpa A. Magnetic Bead-Based Electrochemical Immunoassays On-Drop and On-Chip for Procalcitonin Determination: Disposable Tools for Clinical Sepsis Diagnosis. Biosensors (Basel) 2020; 10:bios10060066. [PMID: 32560303 PMCID: PMC7344519 DOI: 10.3390/bios10060066] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/29/2020] [Accepted: 06/11/2020] [Indexed: 12/28/2022]
Abstract
Procalcitonin (PCT) is a known protein biomarker clinically used for the early stages of sepsis diagnosis and therapy guidance. For its reliable determination, sandwich format magnetic bead-based immunoassays with two different electrochemical detection approaches are described: (i) disposable screen-printed carbon electrodes (SPE-C, on-drop detection); (ii) electro-kinetically driven microfluidic chips with integrated Au electrodes (EMC-Au, on-chip detection). Both approaches exhibited enough sensitivity (limit of detection (LOD) of 0.1 and 0.04 ng mL−1 for SPE-C and EMC-Au, respectively; cutoff 0.5 ng mL−1), an adequate working range for the clinically relevant concentrations (0.5–1000 and 0.1–20 ng mL−1 for SPE-C and EMC-Au, respectively), and good precision (RSD < 9%), using low sample volumes (25 µL) with total assay times less than 20 min. The suitability of both approaches was successfully demonstrated by the analysis of human serum and plasma samples, for which good recoveries were obtained (89–120%). Furthermore, the EMC-Au approach enabled the easy automation of the process, constituting a reliable alternative diagnostic tool for on-site/bed-site clinical analysis.
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Affiliation(s)
- Águeda Molinero-Fernández
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Universidad de Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, Alcalá de Henares, 28871 Madrid, Spain;
| | - María Moreno-Guzmán
- Department of Chemistry in Pharmaceutical Sciences, Analytical Chemistry, Faculty of Pharmacy, Universidad Complutense de Madrid, Avenida Complutense, s/n, 28040 Madrid, Spain;
| | - Miguel Ángel López
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Universidad de Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, Alcalá de Henares, 28871 Madrid, Spain;
- Chemical Research Institute “Andres M. Del Rio”, Universidad de Alcalá, Alcalá de Henares, 28871 Madrid, Spain
- Correspondence: (M.Á.L.); (A.E.)
| | - Alberto Escarpa
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Universidad de Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, Alcalá de Henares, 28871 Madrid, Spain;
- Chemical Research Institute “Andres M. Del Rio”, Universidad de Alcalá, Alcalá de Henares, 28871 Madrid, Spain
- Correspondence: (M.Á.L.); (A.E.)
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Molinero-Fernández Á, Moreno-Guzmán M, Arruza L, López MÁ, Escarpa A. Polymer-Based Micromotor Fluorescence Immunoassay for On-the-Move Sensitive Procalcitonin Determination in Very Low Birth Weight Infants' Plasma. ACS Sens 2020; 5:1336-1344. [PMID: 32204587 DOI: 10.1021/acssensors.9b02515] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A new fluorescence micromotor-based immunoassay (FMIm) has been developed for procalcitonin (PCT) determination as an early sepsis diagnostic analytical tool. The micromotors combine the high binding capacity of the specific antibodies onto their polymeric polypyrrole outer layer (PPy layer), with their magnetic guidance (Ni layer) and self-propulsion by catalytic generation of oxygen bubbles (PtNP inner layer) to actively recognize the PCT antigen. This FMIm allowed a sensitive (LOD = 0.07 ng mL-1) and direct PCT determination in clinical samples from very low-birth-weight infants (VLBWI) with sepsis suspicion, using small volumes of sample (25 μL) in a clinically relevant range of concentrations (0.5-150 ng mL-1). The good agreement between PCT levels obtained by our micromotor-based method and routine immunofluorescence hospital determination demonstrates the feasibility for the analysis in VLBWI samples and its potential as a point-of-care diagnostic tool for sepsis.
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Affiliation(s)
- Águeda Molinero-Fernández
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, 28871 Alcalá de Henares, Madrid, Spain
| | - María Moreno-Guzmán
- Department of Chemistry in Pharmaceutical Sciences, Analytical Chemistry, Faculty of Pharmacy, Universidad Complutense de Madrid, Avenida Complutense, s/n, 28040 Madrid, Spain
| | - Luis Arruza
- Division of Neonatology, Instituto del Niño y del Adolescente, Hospital Clínico San Carlos-IdISSC, 28040 Madrid, Spain
| | - Miguel Ángel López
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, 28871 Alcalá de Henares, Madrid, Spain
- Chemical Research Institute “Andres M. Del Rio”, Universidad de Alcalá, 28871 Alcalá de Henares, Madrid, Spain
| | - Alberto Escarpa
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, 28871 Alcalá de Henares, Madrid, Spain
- Chemical Research Institute “Andres M. Del Rio”, Universidad de Alcalá, 28871 Alcalá de Henares, Madrid, Spain
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Molinero-Fernández Á, Moreno-Guzmán M, Arruza L, López MÁ, Escarpa A. Toward Early Diagnosis of Late-Onset Sepsis in Preterm Neonates: Dual Magnetoimmunosensor for Simultaneous Procalcitonin and C-Reactive Protein Determination in Diagnosed Clinical Samples. ACS Sens 2019; 4:2117-2123. [PMID: 31305070 DOI: 10.1021/acssensors.9b00890] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Early diagnosis of sepsis, combining blood cultures and inflammation biomarkers, continues to be a challenge, especially in very low birth weight (VLBW) infants because of limited availability of blood samples. Traditional diagnostic procedures are cumbersome, not fast enough, and require relatively large volumes of sample. Empiric use of antibiotics, before diagnostic confirmation, is required to decrease mortality, leading to potential antibiotic resistance and side effects in VLBW infants. To solve such a serious problem, a dual magnetoimmunosensor is proposed for simultaneous assessment of two of the most important sepsis biomarkers: procalcitonin (PCT for early phase) and C-reactive protein (CRP for late phase). This "sample-to-result" approach exhibited excellent sensitivity, selectivity, precision, and stability using low sample volumes (<30 μL) and under 20 min of total assay. The analytical usefulness of the approach was demonstrated by analyzing clinically relevant samples of preterm neonates with suspicion of sepsis.
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Affiliation(s)
- Águeda Molinero-Fernández
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, 28871 Alcalá de Henares, Madrid, Spain
| | - María Moreno-Guzmán
- Department of Chemistry in Pharmaceutical Sciences, Analytical Chemistry, Faculty of Pharmacy, Universidad Complutense de Madrid, Avenida Complutense, s/n, 28040 Madrid, Spain
| | - Luis Arruza
- Division of Neonatology, Instituto del Niño y del Adolescente, Hospital Clínico San Carlos-IdISSC, 28040 Madrid, Spain
| | - Miguel Ángel López
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, 28871 Alcalá de Henares, Madrid, Spain
- Chemical Research Institute “Andres M. Del Rio”, Universidad de Alcalá, Madrid, Spain
| | - Alberto Escarpa
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.600, 28871 Alcalá de Henares, Madrid, Spain
- Chemical Research Institute “Andres M. Del Rio”, Universidad de Alcalá, Madrid, Spain
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Molinero-Fernández Á, Jodra A, Moreno-Guzmán M, López MÁ, Escarpa A. Cover Feature: Magnetic Reduced Graphene Oxide/Nickel/Platinum Nanoparticles Micromotors for Mycotoxin Analysis (Chem. Eur. J. 28/2018). Chemistry 2018. [DOI: 10.1002/chem.201801524] [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: 11/09/2022]
Affiliation(s)
- Águeda Molinero-Fernández
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering; University of Alcalá; Carretera Madrid-Barcelona, Km. 33,600 28871 Alcalá de Henares, Madrid Spain
| | - Adrián Jodra
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering; University of Alcalá; Carretera Madrid-Barcelona, Km. 33,600 28871 Alcalá de Henares, Madrid Spain
| | - María Moreno-Guzmán
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering; University of Alcalá; Carretera Madrid-Barcelona, Km. 33,600 28871 Alcalá de Henares, Madrid Spain
| | - Miguel Ángel López
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering; University of Alcalá; Carretera Madrid-Barcelona, Km. 33,600 28871 Alcalá de Henares, Madrid Spain
| | - Alberto Escarpa
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering; University of Alcalá; Carretera Madrid-Barcelona, Km. 33,600 28871 Alcalá de Henares, Madrid Spain
- Chemical Research Institute “Andrés M. del Río” (IQAR); University of Alcalá; Carretera Madrid-Barcelona, Km. 33,600, Alcalá de Henares 28871 Madrid Spain
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13
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Molinero-Fernández Á, Jodra A, Moreno-Guzmán M, López MÁ, Escarpa A. Magnetic Reduced Graphene Oxide/Nickel/Platinum Nanoparticles Micromotors for Mycotoxin Analysis. Chemistry 2018; 24:7172-7176. [DOI: 10.1002/chem.201706095] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Indexed: 12/31/2022]
Affiliation(s)
- Águeda Molinero-Fernández
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering; University of Alcalá; Carretera Madrid-Barcelona, Km. 33,600 28871 Alcalá de Henares, Madrid Spain
| | - Adrián Jodra
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering; University of Alcalá; Carretera Madrid-Barcelona, Km. 33,600 28871 Alcalá de Henares, Madrid Spain
| | - María Moreno-Guzmán
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering; University of Alcalá; Carretera Madrid-Barcelona, Km. 33,600 28871 Alcalá de Henares, Madrid Spain
| | - Miguel Ángel López
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering; University of Alcalá; Carretera Madrid-Barcelona, Km. 33,600 28871 Alcalá de Henares, Madrid Spain
| | - Alberto Escarpa
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering; University of Alcalá; Carretera Madrid-Barcelona, Km. 33,600 28871 Alcalá de Henares, Madrid Spain
- Chemical Research Institute “Andrés M. del Río” (IQAR); University of Alcalá; Carretera Madrid-Barcelona, Km. 33,600, Alcalá de Henares 28871 Madrid Spain
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14
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García-Carmona L, Moreno-Guzmán M, González MC, Escarpa A. Class enzyme-based motors for “on the fly” enantiomer analysis of amino acids. Biosens Bioelectron 2017; 96:275-280. [DOI: 10.1016/j.bios.2017.04.051] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 04/26/2017] [Accepted: 04/29/2017] [Indexed: 01/28/2023]
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15
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Molinero-Fernández Á, Moreno-Guzmán M, López MÁ, Escarpa A. Biosensing Strategy for Simultaneous and Accurate Quantitative Analysis of Mycotoxins in Food Samples Using Unmodified Graphene Micromotors. Anal Chem 2017; 89:10850-10857. [PMID: 28889736 DOI: 10.1021/acs.analchem.7b02440] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A high-performance graphene-based micromotor strategy for simultaneous, fast, and reliable assessment of two highly concerning mycotoxins (fumonisin B1 (FB1) and ocratoxin A (OTA)) has successfully been developed. The assay principle is based on the selective recognition from aptamers to the target mycotoxins and further "on-the-move" fluorescence quenching of the free aptamer in the outer layer of unmodified reduced graphene (rGO; sensing layer) micromotors. Template-prepared rGO/platinum nanoparticles (PtNPs) tubular micromotors were synthesized rapidly and inexpensively by the direct electrodeposition within the conical pores of a polycarbonate template membrane. The new wash-free approach offers using just 1 μL of sample, a simultaneous and rapid "on-the-fly" detection (2 min) with high sensitivity (limits of detection of 7 and 0.4 ng/mL for OTA and FB1, respectively), and high selectivity. Remarkable accuracy (Er < 5%) during the mycotoxin determination in certified reference material as well as excellent quantitative recoveries (96-98%) during the analysis of food samples were also obtained. The excellent results obtained allow envisioning an exciting future for the development of novel applications of catalytic micromotors in unexplored fields such as food safety diagnosis.
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Affiliation(s)
- Águeda Molinero-Fernández
- Department of Analytical Chemistry, Physical Chemistry, and Chemical Engineering, University of Alcalá , Carretera Madrid-Barcelona, Km. 33,600, Alcalá de Henares, E-28871 Madrid, Spain
| | - María Moreno-Guzmán
- Department of Analytical Chemistry, Physical Chemistry, and Chemical Engineering, University of Alcalá , Carretera Madrid-Barcelona, Km. 33,600, Alcalá de Henares, E-28871 Madrid, Spain
| | - Miguel Ángel López
- Department of Analytical Chemistry, Physical Chemistry, and Chemical Engineering, University of Alcalá , Carretera Madrid-Barcelona, Km. 33,600, Alcalá de Henares, E-28871 Madrid, Spain
| | - Alberto Escarpa
- Department of Analytical Chemistry, Physical Chemistry, and Chemical Engineering, University of Alcalá , Carretera Madrid-Barcelona, Km. 33,600, Alcalá de Henares, E-28871 Madrid, Spain.,Chemical Research Institute "Andrés M. del Río" (IQAR), University of Alcalá , Carretera Madrid-Barcelona, Km. 33,600, Alcalá de Henares, E-28871 Madrid, Spain
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16
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García-Carmona L, Moreno-Guzmán M, Martín A, Benito Martínez S, Fernández-Martínez AB, González MC, Lucio-Cazaña J, Escarpa A. Aligned copper nanowires as a cut-and-paste exclusive electrochemical transducer for free-enzyme highly selective quantification of intracellular hydrogen peroxide in cisplatin-treated cells. Biosens Bioelectron 2017; 96:146-151. [PMID: 28494366 DOI: 10.1016/j.bios.2017.04.048] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [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: 02/24/2017] [Revised: 04/18/2017] [Accepted: 04/28/2017] [Indexed: 11/29/2022]
Abstract
The role and reliable quantification of intracellular hydrogen peroxide during cancer therapy constitutes an unexplored and fascinating application. In this work, we report the fabrication of vertically aligned copper nanowires (v-CuNWs) using electrosynthesis on templates, and their application as a cut-and-paste exclusive and flexible electrochemical transducer. This easily adaptable electrodic platform is demonstrated for a fast, simple and free-enzyme selective quantification of intracellular hydrogen peroxide in Cisplatin-treated human renal HK-2 cells. The v-CuNWs sensor was compared with an HRP-enzyme-based biosensor showing excellent correlation and indicates the good selectivity and analytical performance of the v-CuNWs. This sensing approach opens novel avenues for monitoring cell death processes and shows the potential of H2O2 as a cellular damage biomarker, with a clear potency for further developments for in vitro diagnosis and its implication in cancer therapy.
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Affiliation(s)
- Laura García-Carmona
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33,600, Alcalá de Henares, E-28871 Madrid, Spain
| | - María Moreno-Guzmán
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33,600, Alcalá de Henares, E-28871 Madrid, Spain
| | - Aida Martín
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33,600, Alcalá de Henares, E-28871 Madrid, Spain
| | - Selma Benito Martínez
- Department of Systems Biology. University of Alcalá, Alcalá de Henares, E-28871 Madrid, Spain
| | | | - María Cristina González
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33,600, Alcalá de Henares, E-28871 Madrid, Spain
| | - Javier Lucio-Cazaña
- Department of Systems Biology. University of Alcalá, Alcalá de Henares, E-28871 Madrid, Spain
| | - Alberto Escarpa
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcalá, Ctra. Madrid-Barcelona, Km. 33,600, Alcalá de Henares, E-28871 Madrid, Spain.
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Ojeda I, Garcinuño B, Moreno-Guzmán M, González-Cortés A, Yudasaka M, Iijima S, Langa F, Yáñez-Sedeño P, Pingarrón JM. Carbon Nanohorns as a Scaffold for the Construction of Disposable Electrochemical Immunosensing Platforms. Application to the Determination of Fibrinogen in Human Plasma and Urine. Anal Chem 2014; 86:7749-56. [DOI: 10.1021/ac501681n] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Irene Ojeda
- Department
of Analytical Chemistry, Faculty of Chemistry, University Complutense of Madrid, 28040-Madrid, Spain
| | - Belit Garcinuño
- Department
of Analytical Chemistry, Faculty of Chemistry, University Complutense of Madrid, 28040-Madrid, Spain
| | - María Moreno-Guzmán
- Department
of Analytical Chemistry, Faculty of Chemistry, University Complutense of Madrid, 28040-Madrid, Spain
| | - A. González-Cortés
- Department
of Analytical Chemistry, Faculty of Chemistry, University Complutense of Madrid, 28040-Madrid, Spain
| | - Masako Yudasaka
- Nanotube Research Center, National Institute of Advanced Industrial and Technology, Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Sumio Iijima
- Department
of Physics, Meijo University, Shiogamaguchi, Tenpaku-ku, Nagoya 468-8502, Japan
| | - Fernando Langa
- Instituto
de Nanociencia, Nanotecnología y Materiales Moleculares (INAMOL), Universidad de Castilla-La Mancha, 45071-Toledo, Spain
| | - Paloma Yáñez-Sedeño
- Department
of Analytical Chemistry, Faculty of Chemistry, University Complutense of Madrid, 28040-Madrid, Spain
| | - José M. Pingarrón
- Department
of Analytical Chemistry, Faculty of Chemistry, University Complutense of Madrid, 28040-Madrid, Spain
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18
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Campuzano S, Salema V, Moreno-Guzmán M, Gamella M, Yáñez-Sedeño P, Fernández L, Pingarrón J. Disposable amperometric magnetoimmunosensors using nanobodies as biorecognition element. Determination of fibrinogen in plasma. Biosens Bioelectron 2014; 52:255-60. [DOI: 10.1016/j.bios.2013.08.055] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Revised: 08/24/2013] [Accepted: 08/28/2013] [Indexed: 01/10/2023]
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Garcinuño B, Ojeda I, Moreno-Guzmán M, González-Cortés A, Yáñez-Sedeño P, Pingarrón J. Amperometric immunosensor for the determination of ceruloplasmin in human serum and urine based on covalent binding to carbon nanotubes-modified screen-printed electrodes. Talanta 2014; 118:61-7. [DOI: 10.1016/j.talanta.2013.10.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Revised: 09/26/2013] [Accepted: 10/03/2013] [Indexed: 11/28/2022]
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Ojeda I, Moreno-Guzmán M, González-Cortés A, Yáñez-Sedeño P, Pingarrón JM. Electrochemical Magnetic Immunosensors for the Determination of Ceruloplasmin. ELECTROANAL 2013. [DOI: 10.1002/elan.201300269] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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21
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Ojeda I, Moreno-Guzmán M, González-Cortés A, Yáñez-Sedeño P, Pingarrón JM. A disposable electrochemical immunosensor for the determination of leptin in serum and breast milk. Analyst 2013; 138:4284-91. [DOI: 10.1039/c3an00183k] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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22
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Moreno-Guzmán M, Agüí L, González-Cortés A, Yáñez-Sedeño P, Pingarrón JM. Gold nanoparticles/carbon nanotubes/ionic liquid microsized paste electrode for the determination of cortisol and androsterone hormones. J Solid State Electrochem 2012. [DOI: 10.1007/s10008-012-1868-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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23
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Moreno-Guzmán M, González-Cortés A, Yáñez-Sedeño P, Pingarrón JM. Multiplexed Ultrasensitive Determination of Adrenocorticotropin and Cortisol Hormones at a Dual Electrochemical Immunosensor. ELECTROANAL 2012. [DOI: 10.1002/elan.201200070] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Moreno-Guzmán M, Ojeda I, Villalonga R, González-Cortés A, Yáñez-Sedeño P, Pingarrón JM. Ultrasensitive detection of adrenocorticotropin hormone (ACTH) using disposable phenylboronic-modified electrochemical immunosensors. Biosens Bioelectron 2012; 35:82-86. [PMID: 22410481 DOI: 10.1016/j.bios.2012.02.015] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2011] [Revised: 01/16/2012] [Accepted: 02/10/2012] [Indexed: 11/26/2022]
Abstract
This work reports for the first time an electrochemical immunosensor for the determination of adrenocorticotropin hormone (ACTH). The immunoelectrode design involves the use of amino phenylboronic acid for the oriented immobilization of anti-ACTH antibodies onto screen-printed carbon modified electrode surfaces. A competitive immunoassay between the antigen and the biotinylated hormone for the binding sites of the immobilized antibody was performed. The electroanalytical response was generated by using alkaline phosphatase-labelled streptavidin and 1-naphtyl phosphate as the enzyme substrate. The electrochemical oxidation of the enzyme reaction product, 1-naphtol, measured by differential pulse voltammetry was employed to monitor the affinity reaction. Under the optimized working conditions, an extremely low detection limit of 18 pg/L was obtained. Cross-reactivity was evaluated against other hormones (cortisol, estradiol, testosterone, progesterone, hGH and prolactin) and the obtained results demonstrated an excellent selectivity. The developed immunosensor was applied to a human serum sample containing a certified amount of ACTH with good results.
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Affiliation(s)
- María Moreno-Guzmán
- Department of Analytical Chemistry, Faculty of Chemistry, University Complutense of Madrid, 28040 Madrid, Spain
| | - Irene Ojeda
- Department of Analytical Chemistry, Faculty of Chemistry, University Complutense of Madrid, 28040 Madrid, Spain
| | - Reynaldo Villalonga
- Department of Analytical Chemistry, Faculty of Chemistry, University Complutense of Madrid, 28040 Madrid, Spain
| | - Araceli González-Cortés
- Department of Analytical Chemistry, Faculty of Chemistry, University Complutense of Madrid, 28040 Madrid, Spain
| | - Paloma Yáñez-Sedeño
- Department of Analytical Chemistry, Faculty of Chemistry, University Complutense of Madrid, 28040 Madrid, Spain.
| | - José M Pingarrón
- Department of Analytical Chemistry, Faculty of Chemistry, University Complutense of Madrid, 28040 Madrid, Spain
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Moreno-Guzmán M, González-Cortés A, Yáñez-Sedeño P, Pingarrón JM. A disposable electrochemical immunosensor for prolactin involving affinity reaction on streptavidin-functionalized magnetic particles. Anal Chim Acta 2011; 692:125-30. [DOI: 10.1016/j.aca.2011.02.062] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2011] [Revised: 02/17/2011] [Accepted: 02/28/2011] [Indexed: 10/18/2022]
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Eguílaz M, Moreno-Guzmán M, Campuzano S, González-Cortés A, Yáñez-Sedeño P, Pingarrón JM. An electrochemical immunosensor for testosterone using functionalized magnetic beads and screen-printed carbon electrodes. Biosens Bioelectron 2010; 26:517-22. [DOI: 10.1016/j.bios.2010.07.060] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2010] [Revised: 06/29/2010] [Accepted: 07/15/2010] [Indexed: 10/19/2022]
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Moreno-Guzmán M, Eguílaz M, Campuzano S, González-Cortés A, Yáñez-Sedeño P, Pingarrón JM. Disposable immunosensor for cortisol using functionalized magnetic particles. Analyst 2010; 135:1926-33. [PMID: 20577675 DOI: 10.1039/c0an00206b] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [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]
Abstract
A novel electrochemical immunosensor using screen-printed carbon electrodes and functionalized magnetic particles was developed for the determination of cortisol. Anti-cortisol antibody was immobilized onto protein A-modified magnetic particles and a direct competitive immunoassay involving cortisol antigen labeled with alkaline phosphatase (AP) was employed. The resulting conjugate was trapped on the surface of the screen-printed electrode with a small magnet. Cortisol quantification was accomplished by using 1-naphthyl phosphate as AP substrate and differential pulse voltammetry for the detection of the formed 1-naphthol. The variables involved in the preparation of the immunosensor and in the electrochemical detection reaction were optimized. The calibration plot obtained for cortisol exhibited a linear range between 5.0 x 10(-3) and 150 ng mL(-1) (r = 0.993). The limit of detection was 3.5 pg mL(-1), and the EC(50) was 0.19 ng mL(-1). These results demonstrate the high sensitivity achieved with this immunosensor design which compares favourably with other previous reports. The immunosensor also exhibited a high selectivity with respect to other corticosteroid compounds closely related to cortisol. The usefulness of the immunosensor for the analysis of real samples was demonstrated by analyzing certified human sera containing cortisol at two different concentration levels.
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Affiliation(s)
- María Moreno-Guzmán
- Department of Analytical Chemistry, Faculty of Chemistry, University Computense of Madrid, 28040 Madrid, Spain
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