1
|
Chu J, Zhang Y, Li J, Hong J, Sun L, Wei J. A separation-free paper-based hydrogel device for one-step reactive oxygen species determination by a smartphone. J Mater Chem B 2024. [PMID: 38957936 DOI: 10.1039/d4tb00715h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
Paper-based analytical devices (PADs) are very convenient for determining biomarkers in point-of-care (POC) diagnosis while requiring sample pre-treatment or impurity separation. This study reports a novel hydrogel-coupled, paper-based analytical device (PAD) for separation-free H2O2 colorimetric detection in both aqueous solution and cell lysis with sample-to-answer analysis by directly loading into the sample test zone. By encapsulating an inorganic mimic enzyme and chromogenic substrate into the sodium alginate (SA) hydrogel, amplification of the color signal after catalyzing the substrate could be achieved. Taking advantage of the nanoscale porous structure of the hydrogel and the lateral flow channel of the PAD, large interference fragments or bio-macromolecules are prevented from diffusing into the chromogenic reaction, whereas the small target molecules enter the sensing region to trigger the catalytic reaction. This method demonstrated a rapid and accurate analysis with a limit of detection as low as 0.06 mM and detection selectivity. Our proposed device requires no enzyme and is separation-free, portable, easy-to-fabricate, and low-cost, and may offer a platform for quantitative or qualitative analysis of other analytes in body fluids for POC applications.
Collapse
Affiliation(s)
- Jie Chu
- School of Life Sciences, Henan University, Kaifeng, Henan, 475004, China.
- School of Physical Education and Sport, Henan University, Kaifeng, Henan, 475004, China
| | - Yiyi Zhang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan, 475004, China.
| | - Jingwen Li
- School of Life Sciences, Henan University, Kaifeng, Henan, 475004, China.
- School of Physical Education and Sport, Henan University, Kaifeng, Henan, 475004, China
| | - Jun Hong
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan, 475004, China.
| | - Lin Sun
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan, 475004, China.
| | - Jianshe Wei
- School of Life Sciences, Henan University, Kaifeng, Henan, 475004, China.
- School of Physical Education and Sport, Henan University, Kaifeng, Henan, 475004, China
| |
Collapse
|
2
|
Lachance GP, Gauvreau D, Boisselier É, Boukadoum M, Miled A. Breaking Barriers: Exploring Neurotransmitters through In Vivo vs. In Vitro Rivalry. SENSORS (BASEL, SWITZERLAND) 2024; 24:647. [PMID: 38276338 PMCID: PMC11154401 DOI: 10.3390/s24020647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/11/2024] [Accepted: 01/16/2024] [Indexed: 01/27/2024]
Abstract
Neurotransmitter analysis plays a pivotal role in diagnosing and managing neurodegenerative diseases, often characterized by disturbances in neurotransmitter systems. However, prevailing methods for quantifying neurotransmitters involve invasive procedures or require bulky imaging equipment, therefore restricting accessibility and posing potential risks to patients. The innovation of compact, in vivo instruments for neurotransmission analysis holds the potential to reshape disease management. This innovation can facilitate non-invasive and uninterrupted monitoring of neurotransmitter levels and their activity. Recent strides in microfabrication have led to the emergence of diminutive instruments that also find applicability in in vitro investigations. By harnessing the synergistic potential of microfluidics, micro-optics, and microelectronics, this nascent realm of research holds substantial promise. This review offers an overarching view of the current neurotransmitter sensing techniques, the advances towards in vitro microsensors tailored for monitoring neurotransmission, and the state-of-the-art fabrication techniques that can be used to fabricate those microsensors.
Collapse
Affiliation(s)
| | - Dominic Gauvreau
- Department Electrical Engineering, Université Laval, Québec, QC G1V 0A6, Canada; (G.P.L.); (D.G.)
| | - Élodie Boisselier
- Department Ophthalmology and Otolaryngology—Head and Neck Surgery, Université Laval, Québec, QC G1V 0A6, Canada;
| | - Mounir Boukadoum
- Department Computer Science, Université du Québec à Montréal, Montréal, QC H2L 2C4, Canada;
| | - Amine Miled
- Department Electrical Engineering, Université Laval, Québec, QC G1V 0A6, Canada; (G.P.L.); (D.G.)
| |
Collapse
|