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Li L, Zhou Y, Sun C, Zhou Z, Zhang J, Xu Y, Xiao X, Deng H, Zhong Y, Li G, Chen Z, Deng W, Hu X, Wang Y. Fully integrated wearable microneedle biosensing platform for wide-range and real-time continuous glucose monitoring. Acta Biomater 2024; 175:199-213. [PMID: 38160859 DOI: 10.1016/j.actbio.2023.12.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 12/21/2023] [Accepted: 12/26/2023] [Indexed: 01/03/2024]
Abstract
Wearable microneedle sensors for continuous glucose monitoring (CGM) have great potential for clinical impact by allowing access to large data sets to provide individualized treatment plans. To date, their development has been challenged by the accurate wide linear range tracking of interstitial fluid (ISF) glucose (Glu) levels. Here, we present a CGM platform consisting of a three-electrode microneedle electrochemical biosensor and a fully integrated radio-chemical analysis system. The long-term performance of the robust CGM on diabetic rats was achieved by electrodepositing Prussian blue (PB), and crosslinking glucose oxidase (GOx) and chitosan to form a 3D network using glutaraldehyde (GA). After redox by GOx, PB rapidly decomposes hydrogen peroxide and mediates charge transfer, while the 3D network and graphite powder provide enrichment and release sites for Glu and catalytic products, enabling a sensing range of 0.25-35 mM. Microneedle CGM has high sensitivity, good stability, and anti-interference ability. In diabetic rats, CGM can accurately monitor Glu levels in the ISF in real-time, which are highly consistent with levels measured by commercial Glu meters. These results indicate the feasibility and application prospects of the PB-based CGM for the clinical management of diabetes. STATEMENT OF SIGNIFICANCE: This study addresses the challenge of continuous glucose monitoring system design where the narrow linear range of sensing due to the miniaturization of sensors fails to meet the monitoring needs of clinical diabetic patients. This was achieved by utilizing a three-dimensional network of glutaraldehyde cross-linked glucose oxidase and chitosan. The unique topology of the 3D network provides a large number of sites for glucose enrichment and anchors the enzyme to the sensing medium and the conductive substrate through covalent bonding, successfully blocking the escape of the enzyme and the sensing medium and shortening the electron transfer and transmission path.
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Affiliation(s)
- Lei Li
- National Engineering Research Center for Biomaterials & College of Biomedical Engineering, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Yujie Zhou
- National Engineering Research Center for Biomaterials & College of Biomedical Engineering, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Chenwei Sun
- National Engineering Research Center for Biomaterials & College of Biomedical Engineering, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Zhengming Zhou
- Department of Nutrition and Food Hygiene, West China School of Public Health & West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Jieyu Zhang
- National Engineering Research Center for Biomaterials & College of Biomedical Engineering, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Yuanyuan Xu
- National Engineering Research Center for Biomaterials & College of Biomedical Engineering, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Xuanyu Xiao
- National Engineering Research Center for Biomaterials & College of Biomedical Engineering, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Hui Deng
- West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Yuting Zhong
- National Engineering Research Center for Biomaterials & College of Biomedical Engineering, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Guoyuan Li
- National Engineering Research Center for Biomaterials & College of Biomedical Engineering, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Zhiyu Chen
- National Engineering Research Center for Biomaterials & College of Biomedical Engineering, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Wei Deng
- Department of Orthopedics Pidu District People's Hospital, The Third Affiliated Hospital of Chengdu Medical College Chengdu, Sichuan, 611730, China
| | - Xuefeng Hu
- West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, Sichuan, 610041, China.
| | - Yunbing Wang
- National Engineering Research Center for Biomaterials & College of Biomedical Engineering, Sichuan University, Chengdu, Sichuan, 610065, China.
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Alkahtani SA, Mahmoud AM, Ali R, El-Wekil MM. Sonochemical synthesis of lanthanum ferrite nanoparticle-decorated carbon nanotubes for simultaneous electrochemical determination of acetaminophen and dopamine. Mikrochim Acta 2023; 191:25. [PMID: 38091119 DOI: 10.1007/s00604-023-06110-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 11/19/2023] [Indexed: 12/18/2023]
Abstract
A new nanocomposite consisting of lanthanum ferrite nanoparticles (LaFeO3 NPs) integrated with carbon nanotubes (CNTs) was fabricated via facile sonochemical approach. The engineered nanocomposite was applied to simultaneously determine acetaminophen (ACP) and dopamine (DA) in a binary mixture. The LaFeO3 NPs@CNT probe possesses several advantages such as superior conductivity, large surface area, and more active sites, improving its electrocatalytic activity towards ACP and DA. Under optimized conditions, the anodic peak currents (Ipa) linearly increased with increasing concentration of ACP and DA in the range 0.069-210 µM and 0.15-210 µM, respectively. The sensitivity of LaFeO3 NPs@CNTs/glassy carbon electrode (GCE) for detecting ACP and DA is 7.456 and 5.980 μA·μM-1·cm-2, respectively. The detection limits (S/N = 3) for ACP and DA are 0.02 μM and 0.05 μM, respectively. Advantages of LaFeO3 NPs@CNTs/GCE for the detection of ACP and DA include wide linear ranges, low-detection limits, good selectivity, and long-term stability. The as-fabricated electrode was applied to determine ACP and DA in pharmaceutical formulations and human serum samples with recoveries ranging from 97.7 to 103.3% and an RSD that did not exceed 3.7%, confirming the suitability of the proposed sensor for the determination of ACP and DA in real samples. This study not only presents promising opportunities for enhancing the sensitivity and stability of electrochemical sensors used in the detection of bioanalytes but also significantly contributes to the progress of unique and comprehensive biochemical detection methodologies.
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Affiliation(s)
- Saad A Alkahtani
- Department of Clinical Pharmacy, College of Pharmacy, Najran University, Najran, Saudi Arabia
| | - Ashraf M Mahmoud
- Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran, Saudi Arabia
| | - Ramadan Ali
- Department of Pharmaceutical Chemistry, FacultyofPharmacy, University of Tabuk, 71491, Tabuk, Saudi Arabia.
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Al Azhar University, Assiut Branch, Asyut, 71526, Egypt.
| | - Mohamed M El-Wekil
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt.
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