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Parrilla M, Sena-Torralba A, Steijlen A, Morais S, Maquieira Á, De Wael K. A 3D-printed hollow microneedle-based electrochemical sensing device for in situ plant health monitoring. Biosens Bioelectron 2024; 251:116131. [PMID: 38367566 DOI: 10.1016/j.bios.2024.116131] [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: 12/18/2023] [Revised: 01/31/2024] [Accepted: 02/12/2024] [Indexed: 02/19/2024]
Abstract
Plant health monitoring is devised as a new concept to elucidate in situ physiological processes. The need for increased food production to nourish the growing global population is inconsistent with the dramatic impact of climate change, which hinders crop health and exacerbates plant stress. In this context, wearable sensors play a crucial role in assessing plant stress. Herein, we present a low-cost 3D-printed hollow microneedle array (HMA) patch as a sampling device coupled with biosensors based on screen-printing technology, leading to affordable analysis of biomarkers in the plant fluid of a leaf. First, a refinement of the 3D-printing method showed a tip diameter of 25.9 ± 3.7 μm with a side hole diameter on the microneedle of 228.2 ± 18.6 μm using an affordable 3D printer (<500 EUR). Notably, the HMA patch withstanded the forces exerted by thumb pressing (i.e. 20-40 N). Subsequently, the holes of the HMA enabled the fluid extraction tested in vitro and in vivo in plant leaves (i.e. 13.5 ± 1.1 μL). A paper-based sampling strategy adapted to the HMA allowed the collection of plant fluid. Finally, integrating the sampling device onto biosensors facilitated the in situ electrochemical analysis of plant health biomarkers (i.e. H2O2, glucose, and pH) and the electrochemical profiling of plants in five plant species. Overall, this electrochemical platform advances precise and versatile sensors for plant health monitoring. The wearable device can potentially improve precision farming practices, addressing the critical need for sustainable and resilient agriculture in changing environmental conditions.
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Affiliation(s)
- Marc Parrilla
- A-Sense Lab, University of Antwerp, Groenenborgerlaan 171, 2010, Antwerp, Belgium; NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2010, Antwerp, Belgium.
| | - Amadeo Sena-Torralba
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Camino de Vera S/n, 46022, Valencia, Spain
| | - Annemarijn Steijlen
- A-Sense Lab, University of Antwerp, Groenenborgerlaan 171, 2010, Antwerp, Belgium; NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2010, Antwerp, Belgium
| | - Sergi Morais
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Camino de Vera S/n, 46022, Valencia, Spain; Departamento de Química, Universitat Politècnica de València, Camino de Vera S/n, 46022, Valencia, Spain
| | - Ángel Maquieira
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Camino de Vera S/n, 46022, Valencia, Spain; Departamento de Química, Universitat Politècnica de València, Camino de Vera S/n, 46022, Valencia, Spain
| | - Karolien De Wael
- A-Sense Lab, University of Antwerp, Groenenborgerlaan 171, 2010, Antwerp, Belgium; NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2010, Antwerp, Belgium.
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Vanhooydonck A, Caers T, Parrilla M, Delputte P, Watts R. Achieving High-Precision, Low-Cost Microfluidic Chip Fabrication with Flexible PCB Technology. Micromachines (Basel) 2024; 15:425. [PMID: 38675237 PMCID: PMC11051900 DOI: 10.3390/mi15040425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 03/18/2024] [Accepted: 03/19/2024] [Indexed: 04/28/2024]
Abstract
Soft lithography has long remained the state of the art to generate the necessary micropatterning for molded microfluidic (MF) chips. Previous attempts to use printed circuit boards (PCBs) as a cheap and accessible alternative to expensive lithographed molds for the production of PDMS MF chip prototypes have shown their limitations. A more in-depth exploration of using PCBs as a mold substrate and a novel methodology of using flexible PCBs to produce highly accurate MF chips is reported here for the first time. Cross sections highlight the improved accuracy of this method, and peel testing is performed to demonstrate suitable adhesion between the glass substrate and PDMS cast. Positive cell growth viability showcases this novel method as a high-accuracy, high-accessibility, low-cost prototyping method for microfluidic chips while still maintaining all favorable properties provided by the PDMS material.
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Affiliation(s)
- Andres Vanhooydonck
- Faculty of Design Sciences, Department of Product Development, University of Antwerp, Paardenmarkt 94, 2000 Antwerp, Belgium;
| | - Thalissa Caers
- Laboratory for Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, 2610 Antwerp, Belgium; (T.C.); (P.D.)
| | - Marc Parrilla
- A-Sense Lab, University of Antwerp, Groenenborgerlaan 171, 2010 Antwerp, Belgium;
| | - Peter Delputte
- Laboratory for Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, 2610 Antwerp, Belgium; (T.C.); (P.D.)
| | - Regan Watts
- Faculty of Design Sciences, Department of Product Development, University of Antwerp, Paardenmarkt 94, 2000 Antwerp, Belgium;
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Van Echelpoel R, Joosten F, Parrilla M, De Wael K. Progress on the Electrochemical Sensing of Illicit Drugs. Adv Biochem Eng Biotechnol 2024. [PMID: 38273206 DOI: 10.1007/10_2023_239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
Illicit drugs are harmful substances, threatening both health and safety of societies in all corners of the world. Several policies have been developed over time to deal with this illicit drug problem, including supply reduction and harm reduction policies. Both policies require on-site detection tools to succeed, i.e. sensors that can identify illicit drugs in samples at the point-of-care. Electrochemical sensors are highly suited for this task, due to their short analysis times, low cost, high accuracy, portability and orthogonality with current technologies. In this chapter, we evaluate the latest trend in electrochemical sensing of illicit drugs, with a focus on detection of illicit drugs in seizures and body fluids. Furthermore, we will also provide an outlook on the potential of electrochemistry in wearable sensors for this purpose.
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Steijlen ASM, Parrilla M, Van Echelpoel R, De Wael K. Dual Microfluidic Sensor System for Enriched Electrochemical Profiling and Identification of Illicit Drugs On-Site. Anal Chem 2024; 96:590-598. [PMID: 38154077 DOI: 10.1021/acs.analchem.3c05039] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
Electrochemical sensors have emerged as a new analytical tool for illicit drug detection to facilitate ultrafast and accurate identification of suspicious compounds on-site. Drugs of abuse can be identified using their unique voltammetric fingerprint at a given pH. Today, the right buffer solution is manually selected based on drug appearance, and in some cases, a consecutive analysis in two different pH solutions is required. In this work, we present a disposable microfluidic multichannel sensor system that automatically records fingerprints in two pH solutions (e.g., pH 5 and pH 12). This system has two advantages. It will overcome the manual selection of a buffer solution at the right pH, decrease analysis time, and minimize the risk of human errors. Second, the combination of two fingerprints, the superfingerprint, contains more detailed information about the samples, which enhances the selectivity of the analytical technique. First, real-time pH measurements proved that the sample can be brought to the desired pH within a minute. Subsequently, an electrochemical study on the microfluidic platform with 1 mM illicit drug standards of MDMA, cocaine, heroin, and methamphetamine showed that the characteristic voltammetric fingerprints and peak potentials are reproducible, also in the presence of common cutting agents. Finally, the microfluidic concept was validated with real confiscated samples, showing promising results for the user-friendly identification of drugs of abuse. In short, this paper presents a successful proof-of-concept study of a multichannel microfluidic sensor system to enrich the fingerprints of illicit drugs at pH 5 and pH 12, thus providing a low-cost, portable, and rapid identification system of illicit drugs with minimal user intervention.
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Affiliation(s)
- Annemarijn S M Steijlen
- A-Sense Lab, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Marc Parrilla
- A-Sense Lab, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Robin Van Echelpoel
- A-Sense Lab, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Karolien De Wael
- A-Sense Lab, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
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Parrilla M, Detamornrat U, Domínguez-Robles J, Tunca S, Donnelly RF, De Wael K. Wearable Microneedle-Based Array Patches for Continuous Electrochemical Monitoring and Drug Delivery: Toward a Closed-Loop System for Methotrexate Treatment. ACS Sens 2023; 8:4161-4170. [PMID: 37856156 DOI: 10.1021/acssensors.3c01381] [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] [Indexed: 10/20/2023]
Abstract
Wearable devices based on microneedle (MN) technology have recently emerged as tools for in situ transdermal sensing or delivery in interstitial fluid (ISF). Particularly, MN-based electrochemical sensors allow the continuous monitoring of analytes in a minimally invasive manner through ISF. Exogenous small molecules found in ISF such as therapeutic drugs are ideal candidates for MN sensors due to their correlation with blood levels and their relevance for the optimal management of personalized therapies. Herein, a hollow MN array patch is modified with conductive pastes and functionalized with cross-linked chitosan to develop an MN-based voltammetric sensor for continuous monitoring of methotrexate (MTX). Interestingly, the chitosan coating avoids biofouling while enabling the adsorption of MTX at the electrode's surface for sensitive analysis. The MN sensor exhibits excellent analytical performance in vitro with protein-enriched artificial ISF and ex vivo under a Franz diffusion cell configuration. The MN sensor shows a linear range from 25 to 400 μM, which fits within the therapeutic range of high-dose MTX treatment for cancer patients and an excellent continuous operation for more than two days. Moreover, an iontophoretic hollow MN array patch is developed with the integration of both the anode and cathode in the single MN array patch. The ex vivo characterization demonstrates the transdermal on-demand drug delivery of MTX. Overall, the combination of both MN patches represents impactful progress in closed-loop systems for therapeutic drug management in disorders such as cancer, rheumatoid arthritis, or psoriasis.
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Affiliation(s)
- Marc Parrilla
- A-Sense Lab, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Usanee Detamornrat
- School of Pharmacy, Medical Biology Centre, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, U.K
| | - Juan Domínguez-Robles
- School of Pharmacy, Medical Biology Centre, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, U.K
- Department of Pharmacy and Pharmaceutical Technology, University of Seville, 97 Lisburn Road, Seville 41004, Spain
| | - Sensu Tunca
- A-Sense Lab, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Ryan F Donnelly
- School of Pharmacy, Medical Biology Centre, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, U.K
| | - Karolien De Wael
- A-Sense Lab, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
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Truta F, Drăgan AM, Tertis M, Parrilla M, Slosse A, Van Durme F, de Wael K, Cristea C. Electrochemical Rapid Detection of Methamphetamine from Confiscated Samples Using a Graphene-Based Printed Platform. Sensors (Basel) 2023; 23:6193. [PMID: 37448052 DOI: 10.3390/s23136193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 06/29/2023] [Accepted: 07/04/2023] [Indexed: 07/15/2023]
Abstract
Methamphetamine (MAP) is a highly addictive and illegal stimulant drug that has a significant impact on the central nervous system. Its detection in biological and street samples is crucial for various organizations involved in forensic medicine, anti-drug efforts, and clinical diagnosis. In recent years, nanotechnology and nanomaterials have played a significant role in the development of analytical sensors for MAP detection. In this study, a fast, simple, and cost-effective electrochemical sensor is presented that is used for the sensitive detection of MAP in confiscated street samples with a complex matrix. The optimized screen-printed sensor based on a carbon working electrode modified with graphene demonstrated an excellent limit of detection, good sensitivity, and a wide dynamic range (1-500 μM) for the target illicit drug both for standard solutions and real samples (seized samples, tap water, and wastewater samples). It can detect MAP at concentrations as low as 300 nM in real samples. This limit of detection is suitable for the rapid preliminary screening of suspicious samples in customs, ports, airports, and on the street. Furthermore, the sensor exhibits a good recovery rate, indicating its reliability and repeatability. This quality is crucial for ensuring consistent and accurate results during screening processes.
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Affiliation(s)
- Florina Truta
- Department of Analytical Chemistry, Iuliu Hațieganu University of Medicine and Pharmacy, 8 Victor Babes, 400012 Cluj-Napoca, Romania
| | - Ana-Maria Drăgan
- Department of Analytical Chemistry, Iuliu Hațieganu University of Medicine and Pharmacy, 8 Victor Babes, 400012 Cluj-Napoca, Romania
- A-Sense Lab, University of Antwerp, Groenenborgerlaan 171, 2010 Antwerp, Belgium
| | - Mihaela Tertis
- Department of Analytical Chemistry, Iuliu Hațieganu University of Medicine and Pharmacy, 8 Victor Babes, 400012 Cluj-Napoca, Romania
| | - Marc Parrilla
- A-Sense Lab, University of Antwerp, Groenenborgerlaan 171, 2010 Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2010 Antwerp, Belgium
| | - Amorn Slosse
- National Institute for Criminalistics and Criminology (NICC), Vilvoordsesteenweg 100, 1120 Brussels, Belgium
| | - Filip Van Durme
- National Institute for Criminalistics and Criminology (NICC), Vilvoordsesteenweg 100, 1120 Brussels, Belgium
| | - Karolien de Wael
- A-Sense Lab, University of Antwerp, Groenenborgerlaan 171, 2010 Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2010 Antwerp, Belgium
| | - Cecilia Cristea
- Department of Analytical Chemistry, Iuliu Hațieganu University of Medicine and Pharmacy, 8 Victor Babes, 400012 Cluj-Napoca, Romania
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Detamornrat U, Parrilla M, Domínguez-Robles J, Anjani QK, Larrañeta E, De Wael K, Donnelly RF. Transdermal on-demand drug delivery based on an iontophoretic hollow microneedle array system. Lab Chip 2023; 23:2304-2315. [PMID: 37073607 DOI: 10.1039/d3lc00160a] [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] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Transdermal drug delivery has emerged as an alternative administration route for therapeutic drugs, overcoming current issues in oral and parenteral administration. However, this technology is hindered by the low permeability of the stratum corneum of the skin. In this work, we develop a synergic combination of two enhancing technologies to contribute to an improved and on-demand drug delivery through an iontophoretic system coupled with hollow microneedles (HMNs). For the first time, a polymeric HMN array coupled with integrated iontophoresis for the delivery of charged molecules and macromolecules (e.g. proteins) is devised. To prove the concept, methylene blue, fluorescein sodium, lidocaine hydrochloride, and bovine serum albumin-fluorescein isothiocyanate conjugate (BSA-FITC) were first tested in an in vitro setup using 1.5% agarose gel model. Subsequently, the ex vivo drug permeation study using a Franz diffusion cell was conducted, exhibiting a 61-fold, 43-fold, 54-fold, and 17-fold increment of the permeation of methylene blue, fluorescein sodium, lidocaine hydrochloride, and BSA-FITC, respectively, during the application of 1 mA cm-2 current for 6 h. Moreover, the total amount of drug delivered (i.e. in the skin and receptor compartment) was analysed to untangle the different delivery profiles according to the types of molecule. Finally, the integration of the anode and cathode into an iontophoretic hollow microneedle array system (IHMAS) offers the full miniaturisation of the concept. Overall, the IHMAS device provides a versatile wearable technology for transdermal on-demand drug delivery that can improve the administration of personalised doses, and potentially enhance precision medicine.
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Affiliation(s)
- Usanee Detamornrat
- School of Pharmacy, Medical Biology Centre, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK.
| | - Marc Parrilla
- School of Pharmacy, Medical Biology Centre, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK.
- A-Sense Lab, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium.
- NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
| | - Juan Domínguez-Robles
- School of Pharmacy, Medical Biology Centre, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK.
| | - Qonita Kurnia Anjani
- School of Pharmacy, Medical Biology Centre, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK.
| | - Eneko Larrañeta
- School of Pharmacy, Medical Biology Centre, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK.
| | - Karolien De Wael
- A-Sense Lab, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium.
- NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
| | - Ryan F Donnelly
- School of Pharmacy, Medical Biology Centre, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK.
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Dragan AM, Parrilla M, Sleegers N, Slosse A, Van Durme F, van Nuijs A, Oprean R, Cristea C, De Wael K. Investigating the electrochemical profile of methamphetamine to enable fast on-site detection in forensic analysis. Talanta 2023; 255:124208. [PMID: 36628903 DOI: 10.1016/j.talanta.2022.124208] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 12/12/2022] [Accepted: 12/19/2022] [Indexed: 01/06/2023]
Abstract
Methamphetamine (MA) is a synthetic psychoactive drug which is consumed both licitly and illicitly. In some countries it is prescribed for attention-deficit and hyperactivity disorder, and short-term treatment of obesity. More often though, it is abused for its psychostimulant properties. Unfortunately, the spread and abuse of this synthetic drug have increased globally, being reported as the most widely consumed synthetic psychoactive drug in the world in 2019. Attempting to overcome the shortcomings of the currently used on-site methods for MA detection in suspected cargos, the present study explores the potential of electrochemical identification of MA by means of square wave voltammetry on disposable graphite screen-printed electrodes. Hence, the analytical characterization of the method was evaluated under optimal conditions exhibiting a linear range between 50 μM and 2.5 mM MA, a LOD of 16.7 μM, a LOQ of 50.0 μM and a sensitivity of 5.3 μA mM-1. Interestingly, two zones in the potential window were identified for the detection of MA, depending on its concentration in solution. Furthermore, the oxidative pathway of MA was elucidated employing liquid chromatography - mass spectrometry to understand the change in the electrochemical profile. Thereafter, the selectivity of the method towards MA in mixtures with other drugs of abuse as well as common adulterants/cutting agents was evaluated. Finally, the described method was employed for the analysis of MA in confiscated samples and compared with forensic methods, displaying its potential as a fast and easy-to-use method for on-site analysis.
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Affiliation(s)
- Ana-Maria Dragan
- Department of Analytical Chemistry, Faculty of Pharmacy, 'Iuliu Hațieganu' University of Medicine and Pharmacy Cluj-Napoca, Pasteur 6, 400349, Cluj-Napoca, Romania; A-Sense Lab, University of Antwerp, Groenenborgerlaan 171, 2010, Antwerp, Belgium
| | - Marc Parrilla
- A-Sense Lab, University of Antwerp, Groenenborgerlaan 171, 2010, Antwerp, Belgium; NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2010, Antwerp, Belgium
| | - Nick Sleegers
- A-Sense Lab, University of Antwerp, Groenenborgerlaan 171, 2010, Antwerp, Belgium; NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2010, Antwerp, Belgium
| | - Amorn Slosse
- Drugs and Toxicology Department, National Institute for Criminalistics and Criminology (NICC), Vilvoordsesteenweg 100, 1120, Brussels, Belgium
| | - Filip Van Durme
- Drugs and Toxicology Department, National Institute for Criminalistics and Criminology (NICC), Vilvoordsesteenweg 100, 1120, Brussels, Belgium
| | - Alexander van Nuijs
- Toxicological Center, University of Antwerp, Universiteitsplein 1, 2610, Antwerp, Belgium
| | - Radu Oprean
- Department of Analytical Chemistry, Faculty of Pharmacy, 'Iuliu Hațieganu' University of Medicine and Pharmacy Cluj-Napoca, Pasteur 6, 400349, Cluj-Napoca, Romania
| | - Cecilia Cristea
- Department of Analytical Chemistry, Faculty of Pharmacy, 'Iuliu Hațieganu' University of Medicine and Pharmacy Cluj-Napoca, Pasteur 6, 400349, Cluj-Napoca, Romania
| | - Karolien De Wael
- A-Sense Lab, University of Antwerp, Groenenborgerlaan 171, 2010, Antwerp, Belgium; NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2010, Antwerp, Belgium.
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Van Echelpoel R, Parrilla M, Sleegers N, Shanmugam ST, van Nuijs AL, Slosse A, Van Durme F, De Wael K. Validated portable device for the qualitative and quantitative electrochemical detection of MDMA ready for on-site use. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108693] [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: 04/03/2023]
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Joosten F, Parrilla M, van Nuijs AL, Ozoemena KI, De Wael K. Electrochemical detection of illicit drugs in oral fluid: potential for forensic drug testing. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141309] [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: 11/25/2022]
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Montiel NF, Parrilla M, Sleegers N, Van Durme F, van Nuijs AL, De Wael K. Electrochemical sensing of amphetamine-type stimulants (pre)-precursors to fight against the illicit production of synthetic drugs. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141446] [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: 11/03/2022]
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Thiruvottriyur Shanmugam S, Van Echelpoel R, Boeye G, Eliaerts J, Samanipour M, Ching HYV, Florea A, Van Doorslaer S, Van Durme F, Samyn N, Parrilla M, De Wael K. Towards Developing a Screening Strategy for Ecstasy: Revealing the Electrochemical Profile. ChemElectroChem 2021. [DOI: 10.1002/celc.202101198] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Saranya Thiruvottriyur Shanmugam
- A-Sense Lab Department of Bioscience Engineering University of Antwerp Groenenborgerlaan 171 2020 Antwerp Belgium
- NANOlab Center of Excellence University of Antwerp Groenenborgerlaan 171 2020 Antwerp Belgium
| | - Robin Van Echelpoel
- A-Sense Lab Department of Bioscience Engineering University of Antwerp Groenenborgerlaan 171 2020 Antwerp Belgium
- NANOlab Center of Excellence University of Antwerp Groenenborgerlaan 171 2020 Antwerp Belgium
| | - Griet Boeye
- A-Sense Lab Department of Bioscience Engineering University of Antwerp Groenenborgerlaan 171 2020 Antwerp Belgium
- NANOlab Center of Excellence University of Antwerp Groenenborgerlaan 171 2020 Antwerp Belgium
| | - Joy Eliaerts
- National Institute for Criminalistics and Criminology (NICC) Vilvoordsesteenweg 100 1120 Brussels Belgium
| | - Mohammad Samanipour
- Laboratory of Biophysics and Biomedical Physics University of Antwerp Universiteitsplein 1 2610 Wilrijk Belgium
| | - H. Y. Vincent Ching
- Laboratory of Biophysics and Biomedical Physics University of Antwerp Universiteitsplein 1 2610 Wilrijk Belgium
| | - Anca Florea
- A-Sense Lab Department of Bioscience Engineering University of Antwerp Groenenborgerlaan 171 2020 Antwerp Belgium
- NANOlab Center of Excellence University of Antwerp Groenenborgerlaan 171 2020 Antwerp Belgium
| | - Sabine Van Doorslaer
- Laboratory of Biophysics and Biomedical Physics University of Antwerp Universiteitsplein 1 2610 Wilrijk Belgium
| | - Filip Van Durme
- National Institute for Criminalistics and Criminology (NICC) Vilvoordsesteenweg 100 1120 Brussels Belgium
| | - Nele Samyn
- National Institute for Criminalistics and Criminology (NICC) Vilvoordsesteenweg 100 1120 Brussels Belgium
| | - Marc Parrilla
- A-Sense Lab Department of Bioscience Engineering University of Antwerp Groenenborgerlaan 171 2020 Antwerp Belgium
- NANOlab Center of Excellence University of Antwerp Groenenborgerlaan 171 2020 Antwerp Belgium
| | - Karolien De Wael
- A-Sense Lab Department of Bioscience Engineering University of Antwerp Groenenborgerlaan 171 2020 Antwerp Belgium
- NANOlab Center of Excellence University of Antwerp Groenenborgerlaan 171 2020 Antwerp Belgium
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13
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Dragan AM, Parrilla M, Feier B, Oprean R, Cristea C, De Wael K. Analytical techniques for the detection of amphetamine-type substances in different matrices: A comprehensive review. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116447] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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14
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Parrilla M, Vanhooydonck A, Watts R, De Wael K. Wearable wristband-based electrochemical sensor for the detection of phenylalanine in biofluids. Biosens Bioelectron 2021; 197:113764. [PMID: 34753096 DOI: 10.1016/j.bios.2021.113764] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [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: 09/06/2021] [Revised: 10/16/2021] [Accepted: 10/31/2021] [Indexed: 01/08/2023]
Abstract
Wearable electrochemical sensors are driven by the user-friendly capability of on-site detection of key biomarkers for health management. Despite the advances in biomolecule monitoring such as glucose, still, several unmet clinical challenges need to be addressed. For example, patients suffering from phenylketonuria (PKU) should be able to monitor their phenylalanine (PHE) level in a rapid, decentralized, and affordable manner to avoid high levels of PHE in the body which can lead to a profound and irreversible mental disability. Herein, we report a wearable wristband electrochemical sensor for the monitoring of PHE tackling the necessity of controlling PHE levels in PHE hydroxylase deficiency patients. The proposed electrochemical sensor is based on a screen-printed electrode (SPE) modified with a membrane consisting of Nafion, to avoid interferences in biofluids. The membrane also consists of sodium 1,2-naphthoquinone-4-sulphonate for the in situ derivatization of PHE into an electroactive product, allowing its electrochemical oxidation at the surface of the SPE in alkaline conditions. Importantly, the electrochemical sensor is integrated into a wristband configuration to enhance user interaction and engage the patient with PHE self-monitoring. Besides, a paper-based sampling strategy is designed to alkalinize the real sample without the need for sample pretreatment, and thus simplify the analytical process. Finally, the wearable device is tested for the determination of PHE in saliva and blood serum. The proposed wristband-based sensor is expected to impact the PKU self-monitoring, facilitating the daily lives of PKU patients toward optimal therapy and disease management.
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Affiliation(s)
- Marc Parrilla
- A-Sense Lab, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
| | - Andres Vanhooydonck
- Product Development Research Group, Faculty of Design Sciences, University of Antwerp, Ambtmanstraat 1, 2000, Antwerp, Belgium
| | - Regan Watts
- Product Development Research Group, Faculty of Design Sciences, University of Antwerp, Ambtmanstraat 1, 2000, Antwerp, Belgium
| | - Karolien De Wael
- A-Sense Lab, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium.
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15
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Felipe Montiel N, Parrilla M, Beltrán V, Nuyts G, Van Durme F, De Wael K. The opportunity of 6-monoacetylmorphine to selectively detect heroin at preanodized screen printed electrodes. Talanta 2021; 226:122005. [DOI: 10.1016/j.talanta.2020.122005] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/18/2020] [Accepted: 12/10/2020] [Indexed: 01/21/2023]
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16
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Schram J, Parrilla M, Sleegers N, Van Durme F, van den Berg J, van Nuijs ALN, De Wael K. Electrochemical profiling and liquid chromatography-mass spectrometry characterization of synthetic cathinones: From methodology to detection in forensic samples. Drug Test Anal 2021; 13:1282-1294. [PMID: 33624933 DOI: 10.1002/dta.3018] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 02/21/2021] [Accepted: 02/22/2021] [Indexed: 12/15/2022]
Abstract
The emergence of new psychoactive drugs in the market demands rapid and accurate tools for the on-site classification of illegal and legal compounds with similar structures. Herein, a novel method for the classification of synthetic cathinones (SCs) is presented based on their electrochemical profile. First, the electrochemical profile of five common SC (i.e., mephedrone, ethcathinone, methylone, butylone, and 4-chloro-alpha-pyrrolidinovalerophenone) is collected to build calibration curves using square wave voltammetry on graphite screen-printed electrodes (SPEs). Second, the elucidation of the oxidation pathways, obtained by liquid chromatography-high-resolution mass spectrometry, allows the pairing of the oxidation products to the SC electrochemical profile, providing a selective and robust classification. Additionally, the effect of common adulterants and illicit drugs on the electrochemical profile of the SC is explored. Interestingly, a cathodic pretreatment of the SPE allows the selective detection of each SC in presence of electroactive adulterants. Finally, the electrochemical approach is validated with gas chromatography-mass spectrometry by analyzing 26 confiscated samples from seizures and illegal webshops. Overall, the electrochemical method exhibits a successful classification of SC including structural derivatives, a crucial attribute in an ever-diversifying drug market.
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Affiliation(s)
- Jonas Schram
- AXES Research Group, Department of Bioscience Engineering, University of Antwerp, Antwerp, Belgium.,NANOlab Center of Excellence, University of Antwerp, Antwerp, Belgium
| | - Marc Parrilla
- AXES Research Group, Department of Bioscience Engineering, University of Antwerp, Antwerp, Belgium.,NANOlab Center of Excellence, University of Antwerp, Antwerp, Belgium
| | - Nick Sleegers
- AXES Research Group, Department of Bioscience Engineering, University of Antwerp, Antwerp, Belgium.,NANOlab Center of Excellence, University of Antwerp, Antwerp, Belgium
| | - Filip Van Durme
- Drugs and Toxicology Department, National Institute for Criminalistics and Criminology (NICC), Brussels, Belgium
| | - Jorrit van den Berg
- Team Illicit Drugs, The Netherlands Forensic Institute (NFI), The Hague, The Netherlands
| | | | - Karolien De Wael
- AXES Research Group, Department of Bioscience Engineering, University of Antwerp, Antwerp, Belgium.,NANOlab Center of Excellence, University of Antwerp, Antwerp, Belgium
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17
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Fuoco T, Cuartero M, Parrilla M, García-Guzmán JJ, Crespo GA, Finne-Wistrand A. Capturing the Real-Time Hydrolytic Degradation of a Library of Biomedical Polymers by Combining Traditional Assessment and Electrochemical Sensors. Biomacromolecules 2021; 22:949-960. [PMID: 33502851 PMCID: PMC7875459 DOI: 10.1021/acs.biomac.0c01621] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
We have developed an innovative methodology to overcome the lack of techniques for real-time assessment of degradable biomedical polymers at physiological conditions. The methodology was established by combining polymer characterization techniques with electrochemical sensors. The in vitro hydrolytic degradation of a series of aliphatic polyesters was evaluated by following the molar mass decrease and the mass loss at different incubation times while tracing pH and l-lactate released into the incubation media with customized miniaturized electrochemical sensors. The combination of different analytical approaches provided new insights into the mechanistic and kinetics aspects of the degradation of these biomedical materials. Although molar mass had to reach threshold values for soluble oligomers to be formed and specimens' resorption to occur, the pH variation and l-lactate concentration were direct evidence of the resorption of the polymers and indicative of the extent of chain scission. Linear models were found for pH and released l-lactate as a function of mass loss for the l-lactide-based copolymers. The methodology should enable the sequential screening of degradable polymers at physiological conditions and has potential to be used for preclinical material's evaluation aiming at reducing animal tests.
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Affiliation(s)
- Tiziana Fuoco
- Department of Fibre and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen 56-58, SE 100-44 Stockholm, Sweden
| | - Maria Cuartero
- Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen 30, SE-100 44 Stockholm, Sweden
| | - Marc Parrilla
- Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen 30, SE-100 44 Stockholm, Sweden
| | - Juan José García-Guzmán
- Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen 30, SE-100 44 Stockholm, Sweden
| | - Gaston A Crespo
- Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen 30, SE-100 44 Stockholm, Sweden
| | - Anna Finne-Wistrand
- Department of Fibre and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen 56-58, SE 100-44 Stockholm, Sweden
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18
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Teymourian H, Parrilla M, Sempionatto JR, Montiel NF, Barfidokht A, Van Echelpoel R, De Wael K, Wang J. Wearable Electrochemical Sensors for the Monitoring and Screening of Drugs. ACS Sens 2020; 5:2679-2700. [PMID: 32822166 DOI: 10.1021/acssensors.0c01318] [Citation(s) in RCA: 138] [Impact Index Per Article: 34.5] [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: 12/12/2022]
Abstract
Wearable electrochemical sensors capable of noninvasive monitoring of chemical markers represent a rapidly emerging digital-health technology. Recent advances toward wearable continuous glucose monitoring (CGM) systems have ignited tremendous interest in expanding such sensor technology to other important fields. This article reviews for the first time wearable electrochemical sensors for monitoring therapeutic drugs and drugs of abuse. This rapidly emerging class of drug-sensing wearable devices addresses the growing demand for personalized medicine, toward improved therapeutic outcomes while minimizing the side effects of drugs and the related medical expenses. Continuous, noninvasive monitoring of therapeutic drugs within bodily fluids empowers clinicians and patients to correlate the pharmacokinetic properties with optimal outcomes by realizing patient-specific dose regulation and tracking dynamic changes in pharmacokinetics behavior while assuring the medication adherence of patients. Furthermore, wearable electrochemical drug monitoring devices can also serve as powerful screening tools in the hands of law enforcement agents to combat drug trafficking and support on-site forensic investigations. The review covers various wearable form factors developed for noninvasive monitoring of therapeutic drugs in different body fluids and toward on-site screening of drugs of abuse. The future prospects of such wearable drug monitoring devices are presented with the ultimate goals of introducing accurate real-time drug monitoring protocols and autonomous closed-loop platforms toward precise dose regulation and optimal therapeutic outcomes. Finally, current unmet challenges and existing gaps are discussed for motivating future technological innovations regarding personalized therapy. The current pace of developments and the tremendous market opportunities for such wearable drug monitoring platforms are expected to drive intense future research and commercialization efforts.
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Affiliation(s)
- Hazhir Teymourian
- Department of Nanoengineering, University of California San Diego, La Jolla, California 92093, United States
| | - Marc Parrilla
- AXES Research Group, Bioscience Engineering Department, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Juliane R. Sempionatto
- Department of Nanoengineering, University of California San Diego, La Jolla, California 92093, United States
| | - Noelia Felipe Montiel
- AXES Research Group, Bioscience Engineering Department, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Abbas Barfidokht
- Department of Nanoengineering, University of California San Diego, La Jolla, California 92093, United States
| | - Robin Van Echelpoel
- AXES Research Group, Bioscience Engineering Department, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Karolien De Wael
- AXES Research Group, Bioscience Engineering Department, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Joseph Wang
- Department of Nanoengineering, University of California San Diego, La Jolla, California 92093, United States
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19
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Schram J, Parrilla M, Sleegers N, Samyn N, Bijvoets SM, Heerschop MWJ, van Nuijs ALN, De Wael K. Identifying Electrochemical Fingerprints of Ketamine with Voltammetry and Liquid Chromatography–Mass Spectrometry for Its Detection in Seized Samples. Anal Chem 2020; 92:13485-13492. [DOI: 10.1021/acs.analchem.0c02810] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jonas Schram
- AXES Group, Bioscience Engineering Department, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Marc Parrilla
- AXES Group, Bioscience Engineering Department, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Nick Sleegers
- AXES Group, Bioscience Engineering Department, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Nele Samyn
- Drugs and Toxicology Department, National Institute for Criminalistics and Criminology, Vilvoordsesteenweg 100, 1120 Brussels, Belgium
| | - Stefan M. Bijvoets
- Dutch Customs Laboratory, Kingsfordweg 1, Amsterdam, 1043 GN, The Netherlands
| | | | | | - Karolien De Wael
- AXES Group, Bioscience Engineering Department, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
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20
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Wiorek A, Parrilla M, Cuartero M, Crespo GA. Epidermal Patch with Glucose Biosensor: pH and Temperature Correction toward More Accurate Sweat Analysis during Sport Practice. Anal Chem 2020; 92:10153-10161. [PMID: 32588617 PMCID: PMC7467422 DOI: 10.1021/acs.analchem.0c02211] [Citation(s) in RCA: 83] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
![]()
We present an epidermal
patch for glucose analysis in sweat incorporating
for the first time pH and temperature correction according to local
dynamic fluctuations in sweat during on-body tests. This sort of correction
is indeed the main novelty of the paper, being crucial toward reliable
measurements in every sensor based on an enzymatic element whose activity
strongly depends on pH and temperature. The results herein reported
for corrected glucose detection during on-body measurements are supported
by a two-step validation protocol: with the biosensor operating off-
and on-bodily, correlating the results with UV–vis spectrometry
and/or ion chromatography. Importantly, the wearable device is a flexible
skin patch that comprises a microfluidic cell designed with a sweat
collection zone coupled to a fluidic channel in where the needed electrodes
are placed: glucose biosensor, pH potentiometric electrode and a temperature
sensor. The glucose biosensor presents a linear range of response
within the expected physiological levels of glucose in sweat (10–200
μM), and the calibration parameters are dynamically adjusted
to any change in pH and temperature during the sport practice by means
of a new “correction approach”. In addition, the sensor
displays a fast response time, appropriate selectivity, and excellent
reversibility. A total of 9 validated on-body tests are presented:
the outcomes revealed a great potential of the wearable glucose sensor
toward the provision of reliable physiological data linked to individuals
during sport activity. In particular, the developed “correction
approach” is expected to impact into the next generation of
wearable devices that digitalize physiological activities through
chemical information in a trustable manner for both sport and healthcare
applications.
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Affiliation(s)
- Alexander Wiorek
- Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen 30, SE-100 44 Stockholm, Sweden
| | - Marc Parrilla
- Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen 30, SE-100 44 Stockholm, Sweden
| | - María Cuartero
- Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen 30, SE-100 44 Stockholm, Sweden
| | - Gastón A Crespo
- Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen 30, SE-100 44 Stockholm, Sweden
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21
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Cánovas R, Padrell Sánchez S, Parrilla M, Cuartero M, Crespo GA. Cytotoxicity Study of Ionophore-Based Membranes: Toward On-Body and in Vivo Ion Sensing. ACS Sens 2019; 4:2524-2535. [PMID: 31448593 DOI: 10.1021/acssensors.9b01322] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [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: 12/11/2022]
Abstract
We present the most complete study to date comprising in vitro cytotoxicity tests of ion-selective membranes (ISMs) in terms of cell viability, proliferation, and adhesion assays with human dermal fibroblasts. ISMs were prepared with different types of plasticizers and ionophores to be tested in combination with assays that focus on the medium-term and long-term leaching of compounds. Furthermore, the ISMs were prepared in different configurations considering (i) inner-filling solution-type electrodes, (ii) all-solid-state electrodes based on a conventional drop-cast of the membrane, (iii) peeling after the preparation of a wearable sensor, and (iv) detachment from a microneedle-based sensor, thus covering a wide range of membrane shapes. One of the aims of this study, other than the demonstration of the biocompatibility of various ISMs and materials tested herein, is to create an awareness in the scientific community surrounding the need to perform biocompatibility assays during the very first steps of any sensor development with an intended biomedical application. This will foster meeting the requirements for subsequent on-body application of the sensor and avoiding further problems during massive validations toward the final in vivo use and commercialization of such devices.
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Affiliation(s)
- Rocío Cánovas
- Department of Chemistry, School of Engineering Science in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen 30, SE-100 44 Stockholm, Sweden
| | - Sara Padrell Sánchez
- Department of Clinical Science, Intervention and Technology, Karolinska Institutet, and Division of Obstetrics and Gynecology, Karolinska Universitetssjukhuset, SE-141 86 Stockholm, Sweden
| | - Marc Parrilla
- Department of Chemistry, School of Engineering Science in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen 30, SE-100 44 Stockholm, Sweden
| | - María Cuartero
- Department of Chemistry, School of Engineering Science in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen 30, SE-100 44 Stockholm, Sweden
| | - Gastón A. Crespo
- Department of Chemistry, School of Engineering Science in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen 30, SE-100 44 Stockholm, Sweden
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22
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Parrilla M, Guinovart T, Ferré J, Blondeau P, Andrade FJ. A Wearable Paper-Based Sweat Sensor for Human Perspiration Monitoring. Adv Healthc Mater 2019; 8:e1900342. [PMID: 31293084 DOI: 10.1002/adhm.201900342] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [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: 03/15/2019] [Revised: 04/27/2019] [Indexed: 11/10/2022]
Abstract
The fabrication and performance of a wearable paper-based chemiresistor for monitoring perspiration dynamics (sweat rate and sweat loss) are detailed. A novel approach is introduced to measure the amount of aqueous solution in the order of microliters delivered to the sensor by monitoring a linear change in resistance along a conducting paper. The wearable sensor is based on a single-walled carbon nanotubes and surfactant (sodium dodecylbenzenesulfonate) nanocomposite integrated within cellulose fibers of a conventional filter paper. The analytical performance and the sensing mechanism are presented. Monitoring sweat loss in the human body while exercising is demonstrated using the integration of a wireless reader and a user-friendly interface. By addressing the barriers of cost, simplicity, and the truly in situ demanding measurements, this unique wearable sensor is expected to serve in the future in many different applications involving the on-body detection of biofluids, such as a monitoring tool of dehydration levels for athletes as well as a tool for enhancing the sport performance by providing an accurate recovery of the hydration status in daily exercises.
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Affiliation(s)
- Marc Parrilla
- Departament de Química Analítica i Química OrgànicaUniversitat Rovira i Virgili (URV) C/Marcel·l. Domingo 1 43007 Tarragona Spain
| | - Tomàs Guinovart
- Departament de Química Analítica i Química OrgànicaUniversitat Rovira i Virgili (URV) C/Marcel·l. Domingo 1 43007 Tarragona Spain
| | - Jordi Ferré
- Departament de Química Analítica i Química OrgànicaUniversitat Rovira i Virgili (URV) C/Marcel·l. Domingo 1 43007 Tarragona Spain
- Kamleon Ventures SL Av. Països Catalans 18 43007 Tarragona Spain
| | - Pascal Blondeau
- Departament de Química Analítica i Química OrgànicaUniversitat Rovira i Virgili (URV) C/Marcel·l. Domingo 1 43007 Tarragona Spain
| | - Francisco J. Andrade
- Departament de Química Analítica i Química OrgànicaUniversitat Rovira i Virgili (URV) C/Marcel·l. Domingo 1 43007 Tarragona Spain
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23
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Parrilla M, Ortiz-Gómez I, Cánovas R, Salinas-Castillo A, Cuartero M, Crespo GA. Wearable Potentiometric Ion Patch for On-Body Electrolyte Monitoring in Sweat: Toward a Validation Strategy to Ensure Physiological Relevance. Anal Chem 2019; 91:8644-8651. [DOI: 10.1021/acs.analchem.9b02126] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Marc Parrilla
- Department of Chemistry, School of Engineering Science in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen 30, SE-100 44 Stockholm, Sweden
| | - Inmaculada Ortiz-Gómez
- Department of Chemistry, School of Engineering Science in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen 30, SE-100 44 Stockholm, Sweden
- Department of Analytical Chemistry, Campus Fuentenueva, Faculty of Sciences, University of Granada, 18071 Granada, Spain
| | - Rocío Cánovas
- Department of Chemistry, School of Engineering Science in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen 30, SE-100 44 Stockholm, Sweden
| | - Alfonso Salinas-Castillo
- Department of Analytical Chemistry, Campus Fuentenueva, Faculty of Sciences, University of Granada, 18071 Granada, Spain
| | - María Cuartero
- Department of Chemistry, School of Engineering Science in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen 30, SE-100 44 Stockholm, Sweden
| | - Gastón A. Crespo
- Department of Chemistry, School of Engineering Science in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen 30, SE-100 44 Stockholm, Sweden
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24
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Cuartero M, Parrilla M, Crespo GA. Wearable Potentiometric Sensors for Medical Applications. Sensors (Basel) 2019; 19:E363. [PMID: 30658434 PMCID: PMC6359219 DOI: 10.3390/s19020363] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 01/09/2019] [Accepted: 01/15/2019] [Indexed: 01/26/2023]
Abstract
Wearable potentiometric sensors have received considerable attention owing to their great potential in a wide range of physiological and clinical applications, particularly involving ion detection in sweat. Despite the significant progress in the manner that potentiometric sensors are integrated in wearable devices, in terms of materials and fabrication approaches, there is yet plenty of room for improvement in the strategy adopted for the sample collection. Essentially, this involves a fluidic sampling cell for continuous sweat analysis during sport performance or sweat accumulation via iontophoresis induction for one-spot measurements in medical settings. Even though the majority of the reported papers from the last five years describe on-body tests of wearable potentiometric sensors while the individual is practicing a physical activity, the medical utilization of these devices has been demonstrated on very few occasions and only in the context of cystic fibrosis diagnosis. In this sense, it may be important to explore the implementation of wearable potentiometric sensors into the analysis of other biofluids, such as saliva, tears and urine, as herein discussed. While the fabrication and uses of wearable potentiometric sensors vary widely, there are many common issues related to the analytical characterization of such devices that must be consciously addressed, especially in terms of sensor calibration and the validation of on-body measurements. After the assessment of key wearable potentiometric sensors reported over the last five years, with particular attention paid to those for medical applications, the present review offers tentative guidance regarding the characterization of analytical performance as well as analytical and clinical validations, thereby aiming at generating debate in the scientific community to allow for the establishment of well-conceived protocols.
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Affiliation(s)
- María Cuartero
- Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, SE-10044 Stockholm, Sweden.
| | - Marc Parrilla
- Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, SE-10044 Stockholm, Sweden.
| | - Gaston A Crespo
- Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, SE-10044 Stockholm, Sweden.
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25
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Parrilla M, Cuartero M, Padrell Sánchez S, Rajabi M, Roxhed N, Niklaus F, Crespo GA. Wearable All-Solid-State Potentiometric Microneedle Patch for Intradermal Potassium Detection. Anal Chem 2019; 91:1578-1586. [PMID: 30543102 DOI: 10.1021/acs.analchem.8b04877] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A new analytical all-solid-state platform for intradermal potentiometric detection of potassium in interstitial fluid is presented here. Solid microneedles are modified with different coatings and polymeric membranes to prepare both the potassium-selective electrode and reference electrode needed for the potentiometric readout. These microneedle-based electrodes are fixed in an epidermal patch suitable for insertion into the skin. The analytical performances observed for the potentiometric cell (Nernstian slope, limit of detection of 10-4.9 potassium activity, linear range of 10-4.2 to 10-1.1, drift of 0.35 ± 0.28 mV h-1), together with a fast response time, adequate selectivity, and excellent reproducibility and repeatability, are appropriate for potassium analysis in interstitial fluid within both clinical and harmful levels. The potentiometric response is maintained after several insertions into animal skin, confirming the resiliency of the microneedle-based sensor. Ex vivo tests based on the intradermal detection of potassium in chicken and porcine skin demonstrate that the microneedle patch is suitable for monitoring potassium changes inside the skin. In addition, the dimensions of the microneedles modified with the corresponding layers necessary to enhance robustness and provide sensing capabilities (1000 μm length, 45° tip angle, 15 μm thickness in the tip, and 435 μm in the base) agree with the required ranges for a painless insertion into the skin. In vitro cytotoxicity experiments showed that the patch can be used for at least 24 h without any side effect for the skin cells. Overall, the developed concept constitutes important progress in the intradermal analysis of ions related to an electrolyte imbalance in humans, which is relevant for the control of certain types of diseases.
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Affiliation(s)
- Marc Parrilla
- Department of Chemistry, School of Engineering Science in Chemistry, Biochemistry and Health , KTH Royal Institute of Technology , Teknikringen 30 , SE-100 44 Stockholm , Sweden
| | - María Cuartero
- Department of Chemistry, School of Engineering Science in Chemistry, Biochemistry and Health , KTH Royal Institute of Technology , Teknikringen 30 , SE-100 44 Stockholm , Sweden
| | - Sara Padrell Sánchez
- Department of Clinical Science, Intervention and Technology , Karolinska Institutet , K 57 , SE-141 86 Stockholm , Sweden.,Division of Obstetrics and Gynecology , Karolinska Universitetssjukhuset , 14186 Stockholm , Sweden
| | - Mina Rajabi
- Department of Micro and Nanosystems, School of Electrical Engineering and Computer Science , KTH Royal Institute of Technology , Malvinas väg 10 , SE-100 44 Stockholm , Sweden
| | - Niclas Roxhed
- Department of Micro and Nanosystems, School of Electrical Engineering and Computer Science , KTH Royal Institute of Technology , Malvinas väg 10 , SE-100 44 Stockholm , Sweden
| | - Frank Niklaus
- Department of Micro and Nanosystems, School of Electrical Engineering and Computer Science , KTH Royal Institute of Technology , Malvinas väg 10 , SE-100 44 Stockholm , Sweden
| | - Gastón A Crespo
- Department of Chemistry, School of Engineering Science in Chemistry, Biochemistry and Health , KTH Royal Institute of Technology , Teknikringen 30 , SE-100 44 Stockholm , Sweden
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Cánovas R, Parrilla M, Blondeau P, Andrade FJ. A novel wireless paper-based potentiometric platform for monitoring glucose in blood. Lab Chip 2017; 17:2500-2507. [PMID: 28653727 DOI: 10.1039/c7lc00339k] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A novel low-cost, compact and sensitive paper-based platform for the accurate monitoring of glucose in biological fluids is presented. Paper-based working and reference electrodes are combined to build a whole potentiometric cell, which also fits a sampling module for simple and fast determination of glucose in a single drop of blood. The working electrode is built using a platinized filter paper coated with a Nafion membrane that entraps the enzyme glucose oxidase; the reference electrode is made by casting a polyvinylbutyral-based membrane onto a conductive paper. The system works by detecting the hydrogen peroxide generated as a result of the enzymatic reaction. Selectivity is achieved due to the permselective behaviour of Nafion, while a significant enhancement of the sensitivity is reached by exploiting the Donnan-coupled formal potential. Under optimum conditions, a sensitivity of -95.9 ± 4.8 mV per decade in the 0.3-3 mM range is obtained. Validation of the measurements has been performed against standard methods in human serum and blood. Final integration with a wireless reader allows for truly in situ measurements with a less than 2 minute procedure including a two-point calibration, washing and measurement. This low-cost analytical device opens up new prospects for rapid diagnostic results in non-laboratory settings.
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Affiliation(s)
- Rocío Cánovas
- Department of Analytical and Organic Chemistry, Universitat Rovira i Virgili, 43007, Tarragona, Spain.
| | - Marc Parrilla
- Department of Analytical and Organic Chemistry, Universitat Rovira i Virgili, 43007, Tarragona, Spain.
| | - Pascal Blondeau
- Department of Analytical and Organic Chemistry, Universitat Rovira i Virgili, 43007, Tarragona, Spain.
| | - Francisco J Andrade
- Department of Analytical and Organic Chemistry, Universitat Rovira i Virgili, 43007, Tarragona, Spain.
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Affiliation(s)
- Marc Parrilla
- Department of Analytical and Organic Chemistry; Universitat Rovira i Virgili; 43007 Tarragona Spain
| | - Rocío Cánovas
- Department of Analytical and Organic Chemistry; Universitat Rovira i Virgili; 43007 Tarragona Spain
| | - Francisco J. Andrade
- Department of Analytical and Organic Chemistry; Universitat Rovira i Virgili; 43007 Tarragona Spain
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Parrilla M, Cánovas R, Jeerapan I, Andrade FJ, Wang J. A Textile-Based Stretchable Multi-Ion Potentiometric Sensor. Adv Healthc Mater 2016; 5:996-1001. [PMID: 26959998 DOI: 10.1002/adhm.201600092] [Citation(s) in RCA: 119] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Indexed: 11/11/2022]
Abstract
A textile-based wearable multi-ion potentiometric sensor array is described. The printed flexible sensors operate favorably under extreme mechanical strains (that reflect daily activity) while offering attractive real-time noninvasive monitoring of electrolytes such as sodium and potassium.
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Affiliation(s)
- Marc Parrilla
- Department of NanoEngineering; University of California; San Diego, La Jolla CA 92093 USA
| | - Rocío Cánovas
- Department of NanoEngineering; University of California; San Diego, La Jolla CA 92093 USA
| | - Itthipon Jeerapan
- Department of NanoEngineering; University of California; San Diego, La Jolla CA 92093 USA
| | - Francisco J. Andrade
- Departament de Química Analítica i Química Orgànica; Universitat Rovira i Virgili; C/Marcel·lí Domingo 1 Tarragona 43007 Spain
| | - Joseph Wang
- Department of NanoEngineering; University of California; San Diego, La Jolla CA 92093 USA
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Parrilla M, Ferré J, Guinovart T, Andrade FJ. Wearable Potentiometric Sensors Based on Commercial Carbon Fibres for Monitoring Sodium in Sweat. ELECTROANAL 2016. [DOI: 10.1002/elan.201600070] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Guinovart T, Parrilla M, Crespo GA, Rius FX, Andrade FJ. Potentiometric sensors using cotton yarns, carbon nanotubes and polymeric membranes. Analyst 2013; 138:5208-15. [PMID: 23775189 DOI: 10.1039/c3an00710c] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [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 simple and generalized approach to build electrochemical sensors for wearable devices is presented. Commercial cotton yarns are first turned into electrical conductors through a simple dyeing process using a carbon nanotube ink. These conductive yarns are then partially coated with a suitable polymeric membrane to build ion-selective electrodes. Potentiometric measurements using these yarn-potentiometric sensors are demonstrated. Examples of yarns that can sense pH, K(+) and NH4(+) are presented. In all cases, these sensing yarns show limits of detection and linear ranges that are similar to those obtained with lab-made solid-state ion-selective electrodes. Through the immobilization of these sensors in a band-aid, it is shown that this approach could be easily implemented in a wearable device. Factors affecting the performance of the sensors and future potential applications are discussed.
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Affiliation(s)
- Tomàs Guinovart
- Departamento de Química Orgánica y Química Analítica, Universitat Rovira i Virgili, Carrer Marcel-li Domingo s/n, 43007 Tarragona, Spain
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Parrilla M, Lillo C, Herrero-Turrión M, Arévalo R, Aijón J, Lara J, Velasco A. Pax2+ astrocytes in the fish optic nerve head after optic nerve crush. Brain Res 2013; 1492:18-32. [DOI: 10.1016/j.brainres.2012.11.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Revised: 10/31/2012] [Accepted: 11/10/2012] [Indexed: 12/21/2022]
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Fritsch C, Camacho J, Parrilla M. New ultrasound imaging techniques with phase coherence processing. Ultrasonics 2010; 50:122-126. [PMID: 19879617 DOI: 10.1016/j.ultras.2009.09.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2009] [Revised: 09/10/2009] [Accepted: 09/15/2009] [Indexed: 05/28/2023]
Abstract
This work addresses three key subjects to the image quality with phased arrays: timing accuracy, beamforming strategy and post-processing for increased resolution and suppression of grating and side lobes. Timing accuracy is achieved by defining a modular and scalable architecture which guarantees low timing errors, whatever is the system size. The proposed beamforming methodology follows the progressive focusing correction technique, which keeps low focusing errors, provides a high information density and has a simple implementation for real-time imaging in modular architectures. Then, phase coherence imaging is defined to suppress grating and sidelobe indications, simultaneously increasing the lateral resolution.
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Affiliation(s)
- C Fritsch
- Instituto de Automática Industrial, CSIC, La Poveda (Arganda), Madrid, Spain.
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Ibáñez A, Fritsch C, Parrilla M, Villazón J. Monochromatic transfer matrix method for acoustic field simulation thorough media boundaries. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.phpro.2010.01.113] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Clemente D, Porteros A, Arenzana FJ, Aijón J, Parrilla M, Santos-Ledo A, Arévalo R. Characterization of NADPH-diaphorase-positive glial cells of the tench optic nerve after axotomy. Arch Ital Biol 2008; 146:35-52. [PMID: 18666446] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
NADPH-diaphorase (ND) positive cell types were characterized throughout the optic nerve of the tench in normal conditions and after optic nerve transection with survival periods of 1, 3, 7, 14, 30, 60, 120 and 180 days. Astrocytic markers (S100 and glutamine synthetase) and the microglial marker tomato lectin were employed. In the control prechiasmatic optic nerve two types (types I and II) of ND-positive glial cells appeared. All type I cells showed S100 immunoreactivity, whereas only a subpopulation of them were positive to glutamine synthetase. Type II cells only presented S100 immunoreactivity. In the control anterior optic tract, all ND-positive glial cells (type III) presented immunolabeling to S100 and glutamine synthetase. After transection, types I and II did not show any changes in the staining patterns for the glial markers when observed. Two new types of ND-positive glial cells (types IV and V) were observed after axotomy. All type IV cells were S100-immunopositive, and a subpopulation presented glutamine synthetase immunolabeling. Only a subpopulation of type V cells showed glutamine synthetase immunostaining. The presence of type IV or V cells in the lesioned optic nerve occurred simultaneously with significant decreases or absence of type I cells. These data suggest that type I and III cells are astrocytes and type II cells are oligodendrocytes. Types IV and V cells are the result of the activation of type I cells after optic nerve section. The polymorphism observed in ND-positive cells may reflect different cell functions during degenerative and regenerative processes.
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Affiliation(s)
- D Clemente
- Laboratorio de Neurobiología del Desarrollo, Unidad de Neurología Experimental, Hospital Nacional de Parapléjicos, Toledo, Spain
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Fritsch C, Parrilla M, Sánchez T, Martínez O. Beamforming with a reduced sampling rate. Ultrasonics 2002; 40:599-604. [PMID: 12160008 DOI: 10.1016/s0041-624x(02)00181-6] [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] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The beamforming process requires a high delay resolution to avoid the deteriorating effects of the delay quantization lobes on the image dynamic range and signal to noise ratio. Wideband transducers require delay resolutions in the order of 1/16 the signal period. If oversampling is used to achieve this timing resolution, a huge data volume has to be acquired and processed in real time. This is usually avoided by sampling just above the Nyquist rate and interpolating to achieve the required delay resolution. However this increases the hardware complexity. Baseband sampling has been alternatively proposed with sampling rates as low as the transducer frequency or even lower. This approach uses two A/D converters and processing chains for every channel, thus doubling the hardware requirements. Quadrature sampling can be used instead with a single A/D converter, but the sampling rate must be a multiple of four times the transducer frequency, decreasing the application flexibility. Furthermore, it produces relatively high errors in the detected envelope if wideband transducers are used. This work presents a new approach, the selective sampling technique (SST), which keeps the lowest sampling rate required by the imaging process or the signal bandwidth (whatever is larger) and, at the same time, provides a high delay resolution to keep the highest image dynamic range. The SST is based on a second order sampling process which, differently from the mentioned approaches, does not pose any constraints in the time interval between samples and produce lower errors in the detected envelope. The hardware requirements are low (a single A/D converter and processing chain for every transducer element), working at the lowest data rate compatible with the Nyquist criterion, thus reducing the data bandwidth. Furthermore, the sampling points can be also freely chosen, so that the SST simplify the usually required scan conversion process to a simple linear interpolation easily carried out by software in real-time.
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Affiliation(s)
- C Fritsch
- Instituto de Automática Industrial (CSIC), La Poveda, Madrid, Spain.
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Ullate LG, Martínez O, Parrilla M, Izquierdo MAG. 3D beamforming with ultrasonic divided-ring arrays. Ultrasonics 2002; 40:123-127. [PMID: 12159918 DOI: 10.1016/s0041-624x(02)00100-2] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Conventional 2D arrays have a set of squared elements whose inter-element spacing is around lambda/2. This arrangement requires an excessive amount of electronic resources for the generation and processing of ultrasonic signals. In this work, the beam properties of a single divided-ring array are analysed theoretically with the goal of producing volumetric images. Divided-ring arrays are based on a circular pattern, which has a lower periodicity than square arrays, and this property allows increasing the element size while keeping the amplitude of the grating lobes at a reasonably low level. The paper emphasises several advantages of ring arrays, suggesting that these apertures are useful for 3D ultrasonic imaging. First, as the element size may increase, the number of elements can be reduced with little loss of emitting area. Second, ring arrays produce beams of large depth of field in both transmission and reception. This can be used to avoid the complexity associated with dynamic focusing.
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Affiliation(s)
- L G Ullate
- Instituto de Automática Industrial (C.S.I.C.), Madrid, Spain.
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Abstract
B-mode ultrasonic imaging requires that the acquired polar coordinate ultrasound data be converted to the Cartesian format used by digital monitors. Image quality depends on the interpolation algorithm used to this purpose. In this work a selective sampling technique, based on acquiring data at specific points of the scanned area together with a straightforward linear interpolation step, is proposed. Hardware complexity is avoided, because the interpolation task can be carried out by software in real time, concurrently with data acquisition. The performances of the proposed approach are analysed with regard to those provided by other algorithms and some implementation issues are addressed.
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Affiliation(s)
- C Fritsch
- Instituto de Automatica Industrial, Madrid, Spain.
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Parrilla M, Montilla Y, Alvarez C, Quevedo L, Valls O, Banasco J, Pérez D. [Leiomyosarcoma of the vena cava inferior. The correlation: ultrasound and fine-needle puncture biopsy]. G E N 1992; 46:336-40. [PMID: 1340841] [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] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The leiomyosarcoma of the inferior vena cava is a non-frequent tumor, mesenchymal, that has its origin in the smooth muscular tissue of the vascular wall. Its growth is slow and expansive, more frequently found on females. The symptomatology is related to the cava segment where it is located. The diagnosis is performed by ultrasonics, computed tomography and cavography, actually magnetic resonance acquires more and more importance. The treatment is specifically surgery along with radiotherapy and chemotherapy. A case of leiomyosarcoma of the inferior vena cava is presented in which diagnosis was performed using ultrasonics, tomography and cavography confirmed before surgery by biopsy punction with thin needle. In the diagnosis of this pathology it is described the use of intro-surgery ultrasonics.
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Affiliation(s)
- M Parrilla
- Hospital Quirúrgico Hermanos Almeijeiras, Ciudad Habana, Cuba
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41
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Parrilla M, Montilla Y, Rodríguez MA, Quevedo L, Valls O, Pérez D. [Duodenal duplication cyst]. G E N 1992; 46:170-3. [PMID: 1340819] [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] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The duodenal duplication cyst is an uncommon inherited anomaly. Its etiology is related to malformations of the canal in the gastrointestinal duct during the formation of the embryo. It develops in the infancy period or during childhood, it is uncommon in adults. The most frequent finding, is abdominal mass, although it might appear along with obstructive symptoms, recidivante pancreatitis and digestive bleeding. The diagnosis is based on image methods (ultrasonics, radiology, computed tomography, CPRE), nevertheless its identification through ultrasonics is of great value. Therefore we consider important the introduction of a 72-year-old woman case, whose pre-surgery diagnosis was performed with ultrasonics and reaffirmed by all other image methods. We also mention the usefulness of inner-surgery ultrasonics, in the surgery case of this pathology.
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Affiliation(s)
- M Parrilla
- Hospital Quirúrgico Hermanos Ameijeiras, Ciudad Habana, Cuba
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