Article
Chemistry, Analytical
Shyang Pei Hong, Noor Faizah Mohd-Naim, Natasha Ann Keasberry, Minhaz Uddin Ahmed
Summary: A label-free electrochemical immunosensor with enhanced sensitivity and selectivity was developed for the ultra-sensitive detection of beta-lactoglobulin, which showed great improvement at the gold electrode surface. The immunosensor can be utilized for the detection of beta-LG in real food samples with high sensitivity, selectivity, reproducibility and stability.
Article
Chemistry, Analytical
Aysu Arman, Sener Saglam, Aysem Uzer, Resat Apak
Summary: The study presented a sensitive detection method for nitroaromatic explosives using a GC/MWCNTs/PEI electrode coated with gold nanoparticles. The method successfully detected TNT, DNT, 2,4-DNP, PA, and tetryl in a linear range, with detection limits ranging from 15 μg L-1 to 135 μg L-1. This method was also validated against the reference LC-MS method for analyzing explosives in soil samples.
Article
Biochemistry & Molecular Biology
Javid Sharifi, Haniyeh Fayazfar
Summary: The developed carbon nanotube/gold nanoparticle nanocomposite sensor exhibits high sensitivity and efficiency for detecting the antitumor drug doxorubicin hydrochloride. The sensor demonstrates efficient catalytic activity, a wide linear concentration range, and a very low detection limit.
BIOELECTROCHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Wenhao Qian, Tao Song, Mao Ye, Xiaoyu Huang, Yongjun Li, Bingjie Hao
Summary: In this study, a platform for gold nanoparticles (AuNPs) was developed, which maintained good dispersity and inherent physicochemical property. The nanocomposite, consisting of AuNPs and a functional dye, exhibited fluorescence properties and could be used as an efficient electrochemical sensor for glucose determination.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Biochemical Research Methods
Junming Bao, Kejian Ding, Yunfeng Zhu
Summary: DNA methylation plays a crucial role in cell proliferation and differentiation, and aberrant methylation is associated with disease incidence, particularly in tumor development. In this study, we propose an alternative approach for detecting DNA methylation using a biosensor composed of gold nanoparticles, reduced graphene oxide, and graphite carbon nitride. The biosensor can accurately detect methylated DNA fragments and show high sensitivity, specificity, and anti-disturbing ability.
ANALYTICAL BIOCHEMISTRY
(2023)
Article
Biochemical Research Methods
Rossella Svigelj, Ivan Zuliani, Nicolo Dossi, Rosanna Toniolo
Summary: Cow's milk allergy is a common food allergy in children, and this study developed an aptasensor based on electrochemiluminescence for the quantification of beta-LG in real food matrices. The sensor demonstrated high specificity, good sensitivity, portability, and cost effectiveness.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Article
Geochemistry & Geophysics
Felipe de Jesus Barraza-Garcia, Jejanny Lucero Hernandez-Martinez, Florentino Lopez-Urias, Emilio Munoz-Sandoval, Nadia Martinez-Villegas
Summary: This study investigated the stability of multiwalled carbon nanotubes (MWCNTs) in aqueous solutions, and found that their stability is influenced by the concentration and valence of the major water cations. The MWCNTs showed higher stability when suspended in anionic and non-ionic surfactants compared to cationic surfactants. The study also suggests that MWCNTs suspended in cationic surfactants may sediment independently of the type of water, while those suspended in anionic and non-ionic surfactants may remain in the water column.
APPLIED GEOCHEMISTRY
(2022)
Article
Chemistry, Applied
Xiaoning Zhang, Meifeng Li, Yuanping Lv, Xiaoling Sun, Yao Han, Bing Liu, Xiangzhong Zhao, Xiaowen Huang
Summary: The research suggests that gold nanoparticles have the potential to reduce allergic reactions by decreasing the binding capacity of allergens with immunoglobulin E, showing promise for future applications in allergy desensitization.
Article
Chemistry, Analytical
Anna C. R. Moco, Joao A. S. Neto, Dayane D. de Moraes, Pedro H. Guedes, Jessica G. Brussasco, Jose M. R. Flauzino, Luiz F. G. Luz, Marcia M. C. N. Soares, Joao M. Madurro, Ana G. Brito-Madurro
Summary: This study presents a new methodology for constructing screen-printed electrodes for the detection of HIV RNA, utilizing carbon ink and modified gold nanoparticles. The biosensor demonstrated sensitivity in detecting HIV RNA within the clinically relevant concentration range, allowing for quantification of viral load.
MICROCHEMICAL JOURNAL
(2021)
Article
Multidisciplinary Sciences
Indra Gandi Subramani, Veeradasan Perumal, Subash C. B. Gopinath, Norani Muti Mohamed, Mark Ovinis, Lim Li Sze
Summary: A novel label-free non-faradaic capacitive aptasensor was developed in this research to detect the milk allergenic protein beta-lactoglobulin with high specificity and sensitivity. The sensor showed a detection range from 1 ag/ml to 100 fg/ml, with an attomolar detection limit. The fine-tuned CDI-Cu NF/LSG microgap aptasensor has great potential for detecting milk allergens.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Applied
Rongrong Wang, Yu Mao, Lu Wang, Hao Qu, Ying Chen, Lei Zheng
Summary: The histamine sensor based on solution-gated graphene transistors (SGGT) demonstrated high sensitivity, fast and accurate assessment for histamine content in actual fish samples. It shows great potential for application in freshness assessment of various food samples.
Article
Chemistry, Analytical
Pinar Esra Erden, Ceren Kacar Selvi, Esma Kilic
Summary: A novel amperometric tyramine biosensor was fabricated by immobilizing tyrosinase on a glassy carbon electrode modified with a composite film of carbon nanofibers, chitosan, ionic liquid, and gold nanoparticles. The sensor showed high sensitivity and selectivity for tyramine detection, with a linear working range, sensitivity, and detection limit under optimal conditions. This biosensor also demonstrated good selectivity and applicability for detecting tyramine levels in soy sauce samples.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Mohsin Amin, Badr M. M. Abdullah, Stephen R. R. Wylie, Samuel J. J. Rowley-Neale, Craig E. E. Banks, Kathryn A. A. Whitehead
Summary: This study developed a MWCNT-based enzymatic biosensor for the voltammetric detection of cadaverine. The biosensor exhibited high sensitivity and linear concentration dependence, and it was also effective when tested in artificial saliva.
Article
Electrochemistry
Mesfin Zewdu, Taniya Sandhu, Navjeet Kaur, Mulualem Abebe, Femi Olu, Priyanka Sabherwal
Summary: A simple and two-step method for fabricating AuNPs/rGO-MWCNTs nanocomposites without using toxic reducing agents is reported. The synthesized nanocomposite exhibits high electrocatalytic and electron transfer activity, as well as high surface area to volume ratio, making it the best material for fabricating portable and sensitive electrochemical biosensors.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Review
Chemistry, Analytical
Zhaoyuan Gong, Yueming Huang, Xianjing Hu, Jianye Zhang, Qilei Chen, Hubiao Chen
Summary: The presence of pesticide and mycotoxin residues in food poses a potential risk to human health. Traditional detection methods, such as HPLC, lack sensitivity and convenience. In recent years, nanotechnology has facilitated the development of electrochemical biosensors based on nanomaterials, which offer rapid and accurate detection of trace amounts of pesticides and mycotoxins. This review examines English articles on electrochemical biosensors published between 2011 and 2022, focusing on various nanomaterials, including noble metals, magnetic nanoparticles, metal-organic frameworks, carbon nanotubes, graphene, and its derivatives. The roles of these nanomaterials in the detection process are discussed, along with the targeted pesticides and mycotoxins. Despite significant progress, challenges still need to be addressed for further advancements in electrochemical nano-biosensors.
Article
Biophysics
Reza Khodadadi, Manouchehr Eghbal, Hamideh Ofoghi, Alireza Balaei, Ali Tamayol, Karen Abrinia, Amir Sanati-Nezhad, Mohamadmahdi Samandari
Summary: This paper introduces an integrated portable centrifugal microfluidic system that automates cell and fluid manipulation for complete blood counting (CBC) analysis at the point-of-care (POC). The system utilizes a specially designed microfluidic disc for cell separation, solution metering and mixing, and cell counting, and is equipped with a custom script for automated quantification of cells. The proposed method shows a strong correlation with the gold standard hematology analyzer for various blood parameters. The portable system offers simplicity, affordability, and low power consumption, making it a potential solution for improving healthcare delivery in resource-limited settings and remote areas.
BIOSENSORS & BIOELECTRONICS
(2024)
Article
Biophysics
Nabil H. Bhuiyan, Joon S. Shim
Summary: Developing herd immunity is crucial for changing the course of the COVID-19 pandemic. An AI-driven point-of-care testing platform has been proposed for analyzing the body's response to SARS-CoV-2, and it has been successfully used for quantifying viral proteins and antibodies in blood samples. A data-receptive web-based dashboard system has also been developed for real-time analysis of herd immunity progress.
BIOSENSORS & BIOELECTRONICS
(2024)
Article
Biophysics
Alexiane Godain, Timothy M. Vogel, Pascal Fongarland, Naoufel Haddour
Summary: This study provides comprehensive insights into the intricate relationship between shear stress and electroactive biofilms in microbial fuel cells, highlighting the pivotal role of shear stress in influencing the growth kinetics, electrical performance, and physical structure of the biofilms. The study also emphasizes the complexities of extracellular electron transfer mechanisms and the need for complementary metaproteomic analyses.
BIOSENSORS & BIOELECTRONICS
(2024)
Article
Biophysics
Linjie Wang, Yixin Chen, Yang Ji, Shujun Zheng, Fei Wang, Caolong Li
Summary: A paper-based biosensor incorporating surface-enhanced Raman spectroscopy (SERS) and colorimetric detection has been developed for efficient quantification of intracellular glutathione (GSH). The biosensor exhibits excellent selectivity, stability, and precision, with low detection limits in both SERS and colorimetric modes. It has been successfully utilized for intracellular GSH detection and validated against a commercial GSH assay kit.
BIOSENSORS & BIOELECTRONICS
(2024)
Article
Biophysics
Quan Zhou, Jing Wang, Zhen Zhang, Alain Wuethrich, Richard J. Lobb, Matt Trau
Summary: This study presents a biosensor for sensitive detection of EMT-associated biomarkers on extracellular vesicles (EVs) surfaces during targeted therapy. Through longitudinal monitoring of patients, the biosensor shows its ability to identify the EMT-like phenotype switching on circulating EVs during the development of resistance.
BIOSENSORS & BIOELECTRONICS
(2024)
Review
Biophysics
Pratika Rai, Sabrina N. Hoba, Celine Buchmann, Robert J. Subirana-Slotos, Christian Kersten, Tanja Schirmeister, Kristina Endres, Bernd Bufe, Alexey Tarasov
Summary: Proteases have been proposed as potential biomarkers for various pathological conditions. The development of protease biosensors offers a more efficient way to investigate dysregulated proteases. This review article presents different optical and electrochemical detection methods for designing biosensors for all major protease families.
BIOSENSORS & BIOELECTRONICS
(2024)
Article
Biophysics
Chengxin Liu, Xu Shen, Li Yan, Runlian Qu, Yue Wang, Yaqin He, Zixuan Zhan, Piaopiao Chen, Feng Lin
Summary: In this study, a homogeneous rapid electrochemical aptasensor was developed to quantitatively detect CTCs in lung cancer patients. The aptasensor utilized a DNA nanosphere structure and a complementary aptamer to specifically detect mucin 1 as a marker for CTCs. The assay exhibited high specificity and sensitivity, and the results were consistent with other detection methods.
BIOSENSORS & BIOELECTRONICS
(2024)
Article
Biophysics
Danni Xue, Xing Dai, Jialong Zhao, Jiayao Zhang, Huan Liu, Kui Liu, Tao Xu, Chenjie Gu, Xingfei Zhou, Tao Jiang
Summary: In this study, a dual-enhancement SERS substrate based on Ti3C2TX and Ag nanocubes was fabricated for precise quantification of ritonavir and ibrutinib in serum. The formation of numerous electromagnetic hotspots between Ag nanocubes facilitated effective photo-induced charge transfer. The composite substrate showed excellent sensitivity, achieving low detection limits and high recoveries, making it promising for monitoring and identification of clinical blood drug concentration.
BIOSENSORS & BIOELECTRONICS
(2024)
Article
Biophysics
Tenghua Zhang, Zihui Xie, Xiaohe Zheng, Yuxin Liang, Yao Lu, Hankang Zhong, Feiyang Qian, Yuqing Zhu, Ruiting Sun, Yan Sheng, Jiaming Hu
Summary: This study reports a technology based on cationic lipid-polymer hybrid nanoparticles for efficient extracellular vesicle (EV) enrichment and in-situ detection of internal microRNAs. The technology demonstrates high EV enrichment efficiency and sensitive internal RNA detection, making it potentially useful for early pancreatic cancer diagnosis.
BIOSENSORS & BIOELECTRONICS
(2024)
Article
Biophysics
Wenjie Dai, Gaoxu Chen, Xiaoyan Wang, Shujun Zhen, Chengzhi Huang, Lei Zhan, Yuanfang Li
Summary: In this study, a novel metal organic gel (MOG) with dual electrochemiluminescence (ECL) properties was prepared by simple mixing. The MOG exhibited strong and stable anodic and cathodic ECL signals. By utilizing this MOG, an ECL resonance energy transfer (ECL-RET) biosensor was constructed for ultrasensitive detection of a specific gene. The study developed a straightforward technique for obtaining a single luminescent material with dual signals and expanded the analytical application of MOGs in the realm of ECL.
BIOSENSORS & BIOELECTRONICS
(2024)
Article
Biophysics
Lais Canniatti Brazaca, Amanda Hikari Imamura, Rodrigo Vieira Blasques, Jessica Rocha Camargo, Bruno Campos Janegitz, Emanuel Carrilho
Summary: The use of microfluidic paper-based analytical devices (muPADs) for medical diagnosis is a growing trend due to their low cost, easy use, simple manufacturing, and potential for application in low-resource settings. This review focuses on the advances in muPADs for medical diagnostics, discussing their use in detecting various biomarkers in common human biofluids. The challenges of biomarker detection in each sample are examined, along with innovative techniques to overcome these limitations. The commercialization difficulties of muPADs are also considered, along with future trends such as wearable devices and integrated platforms.
BIOSENSORS & BIOELECTRONICS
(2024)
Article
Biophysics
Minghong Jian, Xudong Sun, Hua Zhang, Xiaotong Li, Shasha Li, Zhenxin Wang
Summary: Matrix metalloproteinases (MMPs) are attractive biomarkers for cancer diagnosis and treatment, but their low abundance in biological samples, especially in the early stages of tumors, makes it challenging to precisely analyze MMP activities. In this study, a peptide microarray-based metal-enhanced fluorescence assay (PMMEFA) is proposed as a sensitive and specific method to simultaneously detect MMP-1, -2, -3, -7, -9, and -13 activities. The PMMEFA showed excellent sensitivity and was capable of detecting MMP activities in various matrices.
BIOSENSORS & BIOELECTRONICS
(2024)
Article
Biophysics
Kyung Ho Kim, Eunsu Ryu, Zinah Hilal Khaleel, Sung Eun Seo, Lina Kim, Yong Ho Kim, Hyun Gyu Park, Oh Seok Kwon
Summary: We have developed a novel strategy for discriminative detection of SARS-CoV-2 variants using the plasmonic photothermal effect of gold nanofilms and digital polymerase chain reaction (dPCR) technology. With this method, we were able to detect the delta and omicron variants with high sensitivity within 25 minutes from COVID-19 patients' clinical samples, making it a rapid and accurate point-of-care testing tool.
BIOSENSORS & BIOELECTRONICS
(2024)
Article
Biophysics
Zepeng Kang, Yuanming Wang, Haiyan Song, Xueli Wang, Job Zhang, Zhiguang Zhu
Summary: By designing a wearable and flexible lactic-acid/O2 EBFC with an air-breathing biocathode, the limitations of biocathode are effectively solved. The optimal performance conditions are determined through experiments, and the EBFC is successfully applied to power a low-power device.
BIOSENSORS & BIOELECTRONICS
(2024)
Article
Biophysics
Huayun Chen, Zhiheng You, Yuhui Hong, Xiao Wang, Mingming Zhao, Yushi Luan, Yibin Ying, Yixian Wang
Summary: This study developed a colorimetric sensor array using gas-responsive two-dimensional metal-organic framework (MOF) composites for highly sensitive detection of volatile organic compounds (VOCs). The dye/Zn-2(bim)(4) composites-based sensor arrays showed enhanced sensitivity and anti-interference properties. The findings demonstrate the potential use of dye/Zn-2(bim)(4) sensor arrays for early perception of plant diseases.
BIOSENSORS & BIOELECTRONICS
(2024)