1
|
Zehra N, Malik AH, Parui R, Hussain S, Krishnan Iyer P. A Conjugated Polymer-Based Portable Smartphone Platform for Sensitive and Point-Of-Care Detection of Monoamine Neurotransmitter. Chem Asian J 2024:e202400544. [PMID: 38865578 DOI: 10.1002/asia.202400544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Revised: 06/11/2024] [Accepted: 06/12/2024] [Indexed: 06/14/2024]
Abstract
The precise and effective detection of neurotransmitters (NTs) is crucial for clinical investigation of neuronal processes, and timely monitoring of NT-related chronic diseases. However, sensitive detection of specific NT with unprecedented selectivity is highly challenging due to similarities in chemical and electronic structures of various interfering neurochemicals. Herein, an anionic conjugated polyelectrolyte Poly[(9,9-bis(4'-sulfonatobutyl)fluorene-co-alt-1,4-phenylene) sodium], PFPS was rationally designed and synthesized for amplified detection and point-of-care (PoC) determination of monoamine neurotransmitter, serotonin (5-Hydroxy tryptamine or 5-HT, also diagnostic biomarker of carcinoid tumor) in human blood plasma. The PFPS displayed a remarkable sensing response with an exceptionally high fluorescence quenching constant of 1.14×105 M-1 and an ultralow detection limit of 0.67 μM or 0.142 ppm, much below the clinical range. Furthermore, a smartphone-enabled portable platform was constructed for real-time onsite detection of 5-HT by quantification of visual fluorescence response of PFPS into RGB values using a color recognizer android application. The smartphone platform could be readily applied for convenient, non-invasive PoC testing of 5-HT levels in complex biological fluids accurately and is expected to revolutionize clinical diagnosis and personalized health care devices.
Collapse
Affiliation(s)
- Nehal Zehra
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, India
- Department of Chemistry, Shia P.G. College, Lucknow, 226020, U.P. India
| | - Akhtar H Malik
- Department of Chemistry, Government Degree College Sopore, Sopore, J & K, 193201, India
| | - Retwik Parui
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, India
| | - Sameer Hussain
- School of Chemistry, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi, China
| | - Parameswar Krishnan Iyer
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, India
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati, 781039., India
- School of Health Science and Technology, Indian Institute of Technology Guwahati, Guwahati, 781039., India
| |
Collapse
|
2
|
Li Z, Shen S, Hussain S, Cui B, Yao J, Su Y, Wang Y, Hao Y, Gao R. Imidazolium-Functionalized Conjugated Polymer for On-Site Visual and Ultrasensitive Detection of Toxic Hexavalent Chromium. Anal Chem 2024; 96:5150-5159. [PMID: 38502727 DOI: 10.1021/acs.analchem.3c05200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
Hexavalent chromium [Cr(VI)] is considered a serious environmental pollutant that possesses a hazardous effect on humans even at low concentrations. Thus, the development of a bifunctional material for ultratrace-selective detection and effective elimination of Cr(VI) from the environment remains highly desirable and scarcely reported. In this work, we explore an imidazolium-appended polyfluorene derivative PF-DBT-Im as a highly sensitive/selective optical probe and a smart adsorbent for Cr(VI) ions with an ultralow detection limit of 1.77 nM and removal efficiency up to 93.7%. In an aqueous medium, PF-DBT-Im displays obvious transformation in its emission color from blue to magenta on exclusively introducing Cr(VI), facilitating naked-eye colorimetric detection. Consequently, a portable sensory device integrated with a smartphone is fabricated for realizing real-time and on-site visual detection of Cr(VI). Besides, the imidazolium groups attached onto side chains of PF-DBT-Im are found to be highly beneficial for achieving selective and efficient elimination of Cr(VI) with capacity as high as 128.71 mg g-1. More interestingly, PF-DBT-Im could be easily regenerated following treatment with KBr and can be recycled at least five times in a row. The main factor behind ultrasensitive response and excellent removal efficiency is found to be anion-exchange-induced formation of a unique ground-state complex between PF-DBT-Im and Cr(VI), as evident by FT-IR, XPS, and simulation studies. Thus, taking advantage of the excellent signal amplification property and rich ion-exchange sites, a dual-functional-conjugated polymer PF-DBT-Im is presented for the concurrent recognition and elimination of Cr(VI) ions proficiently and promptly with great prospects in environmental monitoring and water decontamination.
Collapse
Affiliation(s)
- Zehong Li
- School of Chemistry, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Shenyu Shen
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education, National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Sameer Hussain
- School of Chemistry, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Bo Cui
- School of Chemistry, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Jingbo Yao
- Health Science Center, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Yaqiong Su
- School of Chemistry, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Yue Wang
- School of Chemistry, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Yi Hao
- School of Chemistry, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Ruixia Gao
- School of Chemistry, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| |
Collapse
|
3
|
Deng W, Xu Z, Li N, Lv T, Wang L, Li M, Chen X, Liu B. Rational design of a FA1-targeting anti-interference fluorescent probe for the point-of-care testing of albuminuria. Int J Biol Macromol 2024; 261:129723. [PMID: 38272419 DOI: 10.1016/j.ijbiomac.2024.129723] [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: 12/17/2023] [Revised: 01/14/2024] [Accepted: 01/22/2024] [Indexed: 01/27/2024]
Abstract
Albuminuria is a crucial urine biomarker of human unhealthy events such as kidney diseases, cardiovascular diseases, and diabetes. However, the accurate diagnosis of albuminuria poses a significant challenge owing to the severe interference from urine fluorescence and urine drugs. Here, we report a novel flavone-based fluorescent probe, DMC, by incorporating the FA1-targeting methylquinazoline group into a flavone skeleton with the extend π-conjugation. DMC exhibited a rapid response time, high sensitivity, and selectivity towards human serum albumin (HSA) in urine. Moreover, the red-shifted fluorescence and the FA1-targeted HSA-binding of DMC efficiently mitigated the interference from both urine fluorescence and urine drug metabolites. Furthermore, the establishment of a portable testing system highlighted the potential for point-of-care testing, offering a user-friendly and accurate approach to diagnose A2-level and A3-level albuminuria. We expect that the success of this DMC-based diagnostic platform in real urine samples can signify a significant advancement in early clinical diagnosis of albuminuria and its associated diseases.
Collapse
Affiliation(s)
- Weihua Deng
- College of Material Science and Engineering, Shenzhen University, 518060 Shenzhen, China
| | - Zhongyong Xu
- College of Material Science and Engineering, Shenzhen University, 518060 Shenzhen, China.
| | - Na Li
- College of Material Science and Engineering, Shenzhen University, 518060 Shenzhen, China
| | - Taoyuze Lv
- School of Physics, The University of Sydney, NSW 2006, Australia
| | - Lei Wang
- College of Material Science and Engineering, Shenzhen University, 518060 Shenzhen, China
| | - Mingle Li
- College of Material Science and Engineering, Shenzhen University, 518060 Shenzhen, China
| | - Xiaoqiang Chen
- College of Material Science and Engineering, Shenzhen University, 518060 Shenzhen, China
| | - Bin Liu
- College of Material Science and Engineering, Shenzhen University, 518060 Shenzhen, China.
| |
Collapse
|
4
|
Krishnan S, Jose S, Periyasamy BK, Angayarkanny S, Bensingh RJ. Fluorescent polymer as a biosensing tool for the diagnosis of microbial pathogens. Sci Rep 2024; 14:2203. [PMID: 38272939 PMCID: PMC10810778 DOI: 10.1038/s41598-024-51919-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 01/11/2024] [Indexed: 01/27/2024] Open
Abstract
Diseases and diagnoses are predominant in the human population. Early diagnosis of etiological agents plays a vital role in the treatment of bacterial infections. Existing standard diagnostic platforms are laborious, time-consuming, and require trained personnel and cost-effective procedure, though they are producing promising results. These shortcomings have led to a thirst for rapid diagnostic procedures. Fluorescence-based diagnosis is one of the efficient rapid diagnostic methods that rely on specific and sensitive bacterial detection. Emerging bio-sensing studies on conducting polymers (CPs) are gaining popularity in medical diagnostics due to their promising properties of high fluorescence efficiency, good light stability, and low cytotoxicity. Poly[2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV), is the first identified soluble polymer and model material for understanding the fundamental photophysics of conventional CPs. In this present study, MEH-PPV is used as a fluorescent dye for direct pathogen detection applications by interacting with the microbial cell surface. An optimized concentration of MEH-PPV solution used to confirm the presence of selective bacterial structures. The present study endeavours towards bacterial detection based on the emission from bacteria due to interfacial interaction between polymer and bacterial surface.
Collapse
Affiliation(s)
- Selvi Krishnan
- Central Institute of Petrochemicals Engineering and Technology, Chennai, India
| | - Stephen Jose
- Central Institute of Petrochemicals Engineering and Technology, Chennai, India
| | | | - S Angayarkanny
- Department of Chemistry, Anna University, Chennai, India
| | - R Joseph Bensingh
- Central Institute of Petrochemicals Engineering and Technology, Chennai, India
| |
Collapse
|
5
|
Wu W, Yu S, Forbes DS, Jiang H, Ahmed M, Mei J. Efficient and Modular Biofunctionalization of Thiophene-Based Conjugated Polymers through Embedded Latent Disulfide. J Am Chem Soc 2024; 146:578-585. [PMID: 38157440 DOI: 10.1021/jacs.3c10321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Biofunctionalized conjugated polymers (i.e., carrying enzymes, antibodies, and nucleic acids) are of great interest for many biological applications, yet efficient biofunctionalization of conjugated polymers under biocompatible conditions is challenging. We report a facile strategy to make biofunctionalized conjugated polymers through thiol-ene chemistry with embedded latent disulfide functional groups. This is made possible through the design of a cyclic disulfide-containing dioxythiophene, which can be integrated into a series of conjugated polymers via acid-catalyzed chain-growth polymerization. The utility of such a biofunctionalized polymer with glucose oxidase has been examined in organic electrochemical transistors for the selective sensing of glucose. This work provides a venue for the creation of biofunctional organic semiconductors.
Collapse
Affiliation(s)
- Wenting Wu
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Songyan Yu
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Dylan S Forbes
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Hanning Jiang
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Mustafa Ahmed
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Jianguo Mei
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| |
Collapse
|
6
|
Yang C, Yang Y, Zhao G, Wang H, Dai Y, Huang X. A Low-Cost Microfluidic-Based Detection Device for Rapid Identification and Quantification of Biomarkers-Based on a Smartphone. BIOSENSORS 2023; 13:753. [PMID: 37504151 PMCID: PMC10377552 DOI: 10.3390/bios13070753] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 07/11/2023] [Accepted: 07/20/2023] [Indexed: 07/29/2023]
Abstract
The sensitive and rapid detection of microsamples is crucial for early diagnosis of diseases. The short response times and low sample volume requirements of microfluidic chips have shown great potential in early diagnosis, but there are still shortcomings such as complex preparation processes and high costs. We developed a low-cost smartphone-based fluorescence detection device (Smartphone-BFDD) without precision equipment for rapid identification and quantification of biomarkers on glass capillary. The device combines microfluidic technology with RGB image analysis, effectively reducing the sample volume to 20 μL and detection time to only 30 min. For the sensitivity of the device, we constructed a standard sandwich immunoassay (antibody-antigen-antibody) in a glass capillary using the N-protein of SARS-CoV-2 as a biological model, realizing a low limit of detection (LOD, 40 ng mL-1). This device provides potential applications for different biomarkers and offers wide use for rapid biochemical analysis in biomedical research.
Collapse
Affiliation(s)
- Chonghui Yang
- State Key Laboratory of Biobased Material and Green Papermaking, School of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Yujing Yang
- State Key Laboratory of Biobased Material and Green Papermaking, School of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Gaozhen Zhao
- State Key Laboratory of Biobased Material and Green Papermaking, School of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Huan Wang
- State Key Laboratory of Biobased Material and Green Papermaking, School of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Yang Dai
- State Key Laboratory of Biobased Material and Green Papermaking, School of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Xiaowen Huang
- State Key Laboratory of Biobased Material and Green Papermaking, School of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| |
Collapse
|
7
|
Asci Erkocyigit B, Ozufuklar O, Yardim A, Guler Celik E, Timur S. Biomarker Detection in Early Diagnosis of Cancer: Recent Achievements in Point-of-Care Devices Based on Paper Microfluidics. BIOSENSORS 2023; 13:387. [PMID: 36979600 PMCID: PMC10046104 DOI: 10.3390/bios13030387] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/03/2023] [Accepted: 03/08/2023] [Indexed: 06/18/2023]
Abstract
Microfluidics is very crucial in lab-on-a-chip systems for carrying out operations in a large-scale laboratory environment on a single chip. Microfluidic systems are miniaturized devices in which the fluid behavior and control can be manipulated on a small platform, with surface forces on the platform being greater than volumetric forces depending on the test method used. In recent years, paper-based microfluidic analytical devices (μPADs) have been developed to be used in point-of-care (POC) technologies. μPADs have numerous advantages, including ease of use, low cost, capillary action liquid transfer without the need for power, the ability to store reagents in active form in the fiber network, and the capability to perform multiple tests using various measurement techniques. These benefits are critical in the advancement of paper-based microfluidics in the fields of disease diagnosis, drug application, and environment and food safety. Cancer is one of the most critical diseases for early detection all around the world. Detecting cancer-specific biomarkers provides significant data for both early diagnosis and controlling the disease progression. μPADs for cancer biomarker detection hold great promise for improving cure rates, quality of life, and minimizing treatment costs. Although various types of bioanalytical platforms are available for the detection of cancer biomarkers, there are limited studies and critical reviews on paper-based microfluidic platforms in the literature. Hence, this article aims to draw attention to these gaps in the literature as well as the features that future platforms should have.
Collapse
Affiliation(s)
- Bilge Asci Erkocyigit
- Department of Biotechnology, Institute of Natural Sciences, Ege University, Izmir 35100, Turkey
| | - Ozge Ozufuklar
- Department of Biotechnology, Institute of Natural Sciences, Ege University, Izmir 35100, Turkey
| | - Aysenur Yardim
- Department of Bioengineering, Institute of Natural Sciences, Ege University, Izmir 35100, Turkey
| | - Emine Guler Celik
- Department of Bioengineering, Faculty of Engineering, Ege University, Izmir 35100, Turkey
| | - Suna Timur
- Department of Biochemistry, Faculty of Science, Ege University, Izmir 35100, Turkey
- Central Research Test and Analysis Laboratory Application, Research Center, Ege University, Izmir 35100, Turkey
| |
Collapse
|
8
|
Zeng C, Song C, Xu Z, Qin T, Lv T, Wang L, Chen X, Liu B, Peng X. The first fluorescent sensor for the detection of closantel in meat. Talanta 2023; 258:124413. [PMID: 36871517 DOI: 10.1016/j.talanta.2023.124413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 02/27/2023] [Accepted: 03/01/2023] [Indexed: 03/06/2023]
Abstract
Closantel is widely used in the management of parasitic infestation in livestock, but is contraindicated in humans due to its high toxic to human retina. Thus, development of a fast and selective method for the detection of closantel residues in animal products is highly needed yet still challenging. In the present study, we report a supramolecular fluorescent sensor for closantel detection through a two-step screening process. The fluorescent sensor can detect closantel with a fast response (<10 s), high sensitivity, and high selectivity. The limit of detection is 0.29 ppm, which is much lower than the maximum residue level set by government. Moreover, the applicability of this sensor has been demonstrated in commercial drugs tablets, injection fluids, and real edible animal products (muscle, kidney, and liver). This work provides the first fluorescence analytical tool for accurate and selective determination of closantel, and may inspire more sensor design for food analysis.
Collapse
Affiliation(s)
- Conghui Zeng
- College of Material Science and Engineering, Guangdong Research Center for Interfacial Engineering of Functional Materials, State Key Laboratory of Fine Chemicals, Shenzhen University, Shenzhen, 518060, China
| | - Chao Song
- College of Material Science and Engineering, Guangdong Research Center for Interfacial Engineering of Functional Materials, State Key Laboratory of Fine Chemicals, Shenzhen University, Shenzhen, 518060, China
| | - Zhongyong Xu
- College of Material Science and Engineering, Guangdong Research Center for Interfacial Engineering of Functional Materials, State Key Laboratory of Fine Chemicals, Shenzhen University, Shenzhen, 518060, China
| | - Tianyi Qin
- College of Material Science and Engineering, Guangdong Research Center for Interfacial Engineering of Functional Materials, State Key Laboratory of Fine Chemicals, Shenzhen University, Shenzhen, 518060, China
| | - Taoyuze Lv
- School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Lei Wang
- College of Material Science and Engineering, Guangdong Research Center for Interfacial Engineering of Functional Materials, State Key Laboratory of Fine Chemicals, Shenzhen University, Shenzhen, 518060, China
| | - Xiaoqiang Chen
- College of Material Science and Engineering, Guangdong Research Center for Interfacial Engineering of Functional Materials, State Key Laboratory of Fine Chemicals, Shenzhen University, Shenzhen, 518060, China
| | - Bin Liu
- College of Material Science and Engineering, Guangdong Research Center for Interfacial Engineering of Functional Materials, State Key Laboratory of Fine Chemicals, Shenzhen University, Shenzhen, 518060, China.
| | - Xiaojun Peng
- College of Material Science and Engineering, Guangdong Research Center for Interfacial Engineering of Functional Materials, State Key Laboratory of Fine Chemicals, Shenzhen University, Shenzhen, 518060, China; State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| |
Collapse
|
9
|
Sarkar S, Shil A, Jung YL, Singha S, Ahn KH. Rapid Point-of-Care Quantification of Human Serum Albumin in Urine Based on Ratiometric Fluorescence Signaling Driven by Intramolecular H-Bonding. ACS Sens 2022; 7:3790-3799. [PMID: 36413708 DOI: 10.1021/acssensors.2c01684] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Human serum albumin exerts multifunctions, such as maintaining the oncotic pressure of plasma, carrying hydrophobic molecules, and acting as the most important antioxidant in the blood. Lower serum albumin levels are linked to several cardiovascular diseases, and dysfunction of albumin reabsorption in the kidney is linked to liver disease, renal disorder, and diabetes. Albumin is thus a powerful diagnostic and prognostic marker; however, its quantification in urine by readily affordable tools is challenging owing to its very low concentration. To address this issue, we developed a ratiometric fluorescent probe with multiple advantages through a systematic structure variation of a benzocoumarin fluorophore and, further, a prototype of a smartphone-based point-of-care device. We determined albumin levels in urine and observed that a smoking person has notably higher urine albumin than a nonsmoking person. The cheap device provides a promising tool for albumin-associated disease diagnosis in communities with limited resources.
Collapse
Affiliation(s)
- Sourav Sarkar
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
| | - Anushree Shil
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
| | - Yun Lim Jung
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
| | - Subhankar Singha
- Institute of Advanced Studies and Research, JIS University, Kolkata 700091, India
| | - Kyo Han Ahn
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
| |
Collapse
|
10
|
Wu Y, Zhang Y, Xu Z, Guo X, Yang W, Zhang X, Liao Y, Fan M, Zhang D. A Portable Smartphone-Based System for the Detection of Blood Calcium Using Ratiometric Fluorescent Probes. BIOSENSORS 2022; 12:bios12110917. [PMID: 36354426 PMCID: PMC9687499 DOI: 10.3390/bios12110917] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/18/2022] [Accepted: 10/21/2022] [Indexed: 06/07/2023]
Abstract
Hypocalcemia is a disease that adversely affects the production and reproduction of dairy cows. A portable device for rapid bovine blood calcium sensing has been growing in demand. Herein, we report a smartphone-based ratiometric fluorescence probe (SRFP) platform as a new way to detect and quantify calcium ions (Ca2+) in blood serum. Specifically, we employed a cost-effective and portable smartphone-based platform coupled with customized software that evaluates the response of Ca2+ ions to ratiometric fluorescence probe in bovine serum. The platform consists of a three-dimensional (3D) printed housing and low-cost optical components that excite fluorescent probe and selectively transmit fluorescence emissions to smartphones. The customized software is equipped with a calibration model to quantify the acquired fluorescence images and quantify the concentration of Ca2+ ions. The ratio of the green channel to the red channel bears a highly reproducible relationship with Ca2+ ions concentration from 10 μM to 40 μM in bovine serum. Our detection system has a limit of detection (LOD) of 1.8 μM in bovine serum samples and the recoveries of real samples ranged from 92.8% to 110.1%, with relative standard deviation (RSD) ranging from 1.72% to 4.89%. The low-cost SRFP platform has the potential to enable campesino to rapidly detect Ca2+ ions content in bovine serum on-demand in any environmental setting.
Collapse
|
11
|
Zhang WY, Tian T, Peng LJ, Zhou HY, Zhang H, Chen H, Yang FQ. A Paper-Based Analytical Device Integrated with Smartphone: Fluorescent and Colorimetric Dual-Mode Detection of β-Glucosidase Activity. BIOSENSORS 2022; 12:893. [PMID: 36291030 PMCID: PMC9599113 DOI: 10.3390/bios12100893] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/15/2022] [Accepted: 10/16/2022] [Indexed: 06/16/2023]
Abstract
In this work, indoxyl-glucoside was used as the substrate to develop a cost-effective, paper-based analytical device for the fluorescent and colorimetric dual-mode detection of β-glucosidase activity through a smartphone. The β-glucosidase can hydrolyze the colorless substrate indoxyl-glucoside to release indoxyl, which will be self-oxidized to generate green products in the presence of oxygen. Meanwhile, the green products emit bright blue-green fluorescence under ultraviolet-visible light irradiation at 365 nm. Fluorescent or colorimetric images were obtained by a smartphone, and the red-green-blue channels were analyzed by the Adobe Photoshop to quantify the β-glucosidase activity. Under the optimum conditions, the relative fluorescent and colorimetric signals have a good linear relationship with the activity of β-glucosidase, in the range of 0.01-1.00 U/mL and 0.25-5.00 U/mL, and the limits of detection are 0.005 U/mL and 0.0668 U/mL, respectively. The activities of β-glucosidase in a crude almond sample measured by the fluorescent and colorimetric methods were 23.62 ± 0.53 U/mL and 23.86 ± 0.25 U/mL, respectively. In addition, the spiked recoveries of normal human serum and crude almond samples were between 87.5% and 118.0%. In short, the paper-based device, combined with a smartphone, can provide a simple, environmentally friendly, and low-cost method for the fluorescent and colorimetric dual-mode detection of β-glucosidase activity.
Collapse
Affiliation(s)
- Wei-Yi Zhang
- Chongqing Key Laboratory of High Active Traditional Chinese Drug Delivery System, Chongqing Medical and Pharmaceutical College, Chongqing 401331, China
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China
| | - Tao Tian
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China
| | - Li-Jing Peng
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China
| | - Hang-Yu Zhou
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China
| | - Hao Zhang
- Chongqing Key Laboratory of High Active Traditional Chinese Drug Delivery System, Chongqing Medical and Pharmaceutical College, Chongqing 401331, China
| | - Hua Chen
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China
| | - Feng-Qing Yang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China
| |
Collapse
|
12
|
Abdulmalek S, Nasir A, Jabbar WA, Almuhaya MAM, Bairagi AK, Khan MAM, Kee SH. IoT-Based Healthcare-Monitoring System towards Improving Quality of Life: A Review. Healthcare (Basel) 2022; 10:1993. [PMID: 36292441 PMCID: PMC9601552 DOI: 10.3390/healthcare10101993] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 09/30/2022] [Accepted: 10/06/2022] [Indexed: 11/04/2022] Open
Abstract
The Internet of Things (IoT) is essential in innovative applications such as smart cities, smart homes, education, healthcare, transportation, and defense operations. IoT applications are particularly beneficial for providing healthcare because they enable secure and real-time remote patient monitoring to improve the quality of people's lives. This review paper explores the latest trends in healthcare-monitoring systems by implementing the role of the IoT. The work discusses the benefits of IoT-based healthcare systems with regard to their significance, and the benefits of IoT healthcare. We provide a systematic review on recent studies of IoT-based healthcare-monitoring systems through literature review. The literature review compares various systems' effectiveness, efficiency, data protection, privacy, security, and monitoring. The paper also explores wireless- and wearable-sensor-based IoT monitoring systems and provides a classification of healthcare-monitoring sensors. We also elaborate, in detail, on the challenges and open issues regarding healthcare security and privacy, and QoS. Finally, suggestions and recommendations for IoT healthcare applications are laid down at the end of the study along with future directions related to various recent technology trends.
Collapse
Affiliation(s)
- Suliman Abdulmalek
- Faculty of Electrical & Electronic Engineering Technology, Universiti Malaysia Pahang, Pekan 26600, Malaysia
- Faculty of Engineering and Computing, University of Science & Technology, Aden 8916162, Yemen
| | - Abdul Nasir
- Faculty of Electrical & Electronic Engineering Technology, Universiti Malaysia Pahang, Pekan 26600, Malaysia
| | - Waheb A. Jabbar
- School of Engineering and the Built Environment, Birmingham City University, Birmingham B4 7XG, UK
| | - Mukarram A. M. Almuhaya
- Faculty of Electrical & Electronic Engineering Technology, Universiti Malaysia Pahang, Pekan 26600, Malaysia
| | - Anupam Kumar Bairagi
- Computer Science and Engineering Discipline, Khulna University, Khulna 9208, Bangladesh
| | - Md. Al-Masrur Khan
- Department of ICT Integrated Ocean Smart Cities Engineering, Dong-A University, Busan 49315, Korea
| | - Seong-Hoon Kee
- Department of ICT Integrated Ocean Smart Cities Engineering, Dong-A University, Busan 49315, Korea
| |
Collapse
|
13
|
A Smartphone-Based Biosensor for Non-Invasive Monitoring of Total Hemoglobin Concentration in Humans with High Accuracy. BIOSENSORS 2022; 12:bios12100781. [PMID: 36290919 PMCID: PMC9599156 DOI: 10.3390/bios12100781] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/16/2022] [Accepted: 09/18/2022] [Indexed: 11/16/2022]
Abstract
In this paper, we propose a smartphone-based biosensor for detecting human total hemoglobin concentration in vivo with high accuracy. Compared to the existing biosensors used to measure hemoglobin concentration, the smartphone-based sensor utilizes the camera, memory, and computing power of the phone. Thus, the cost is largely reduced. Compared to existing smartphone-based sensors, we developed a highly integrated multi-wavelength LED module and a specially designed phone fixture to reduce spatial errors and motion artifacts, respectively. In addition, we embedded a new algorithm into our smartphone-based sensor to improve the measurement accuracy; an L*a*b* color space transformation and the “a” parameter were used to perform the final quantification. We collected 24 blood samples from normal and anemic populations. The adjusted R2 of the prediction results obtained from the multiple linear regression method reached 0.880, and the RMSE reached 9.04, which met the accuracy requirements of non-invasive detection of hemoglobin concentration.
Collapse
|
14
|
A Smartphone Integrated Platform for Ratiometric Fluorescent Sensitive and Selective Determination of Dipicolinic Acid. BIOSENSORS 2022; 12:bios12080668. [PMID: 36005063 PMCID: PMC9405621 DOI: 10.3390/bios12080668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 08/02/2022] [Accepted: 08/17/2022] [Indexed: 11/25/2022]
Abstract
A desirable lanthanide-based ratiometric fluorescence probe was designed as a multifunctional nanoplatform for the determination of dipicolinic acid (DPA), a unique bacterial endospore biomarker, with high selectivity and sensitivity. The carbon dots (CDs) with blue emission wavelengths at 470 nm are developed with europium ion (Eu3+) to form Eu3+/CDs fluorescent probes. DPA can specifically combine with Eu3+ and then transfer energy from DPA to Eu3+ sequentially through the antenna effect, resulting in a distinct increase in the red fluorescence emission peak at 615 nm. The fluorescence intensity ratio of Eu3+/CDs (fluorescence intensity at 615 nm/fluorescence intensity at 470 nm) showed good linearity and low detection limit. The developed ratiometric nanoplatform possesses great potential for application in complex matrices owing to its specificity for DPA. In addition, the integration of a smartphone with the Color Picker APP installed enabled point-of-care testing (POCT) with quantitative measurement capabilities, confirming the great potential of the as-prepared measurement platform for on-site testing.
Collapse
|