نتایج جستجو برای: electrochemical immunosensor

تعداد نتایج: 52102  

2018
Kanokwan Charoenkitamorn Phan Trong Tue Keiko Kawai Orawon Chailapakul Yuzuru Takamura

In this work, a simple electrochemical immunoassay based on platinum nanoparticles (PtNPs) using open circuit potential (OCP) detection was developed. The detection of human chorionic gonadotropin hormone (hCG) as a model analyte, was demonstrated by direct electrical detection of PtNPs in hydrazine solution using OCP measurement without any application of either potential or current to the sys...

Journal: :Clinical chemistry 2006
Yang Luo Ming Chen Qianjun Wen Meng Zhao Bo Zhang Xiaoyan Li Feng Wang Qing Huang Chunyan Yao Tianlun Jiang Guoru Cai Weiling Fu

BACKGROUND Urinary proteins are predictive and prognostic markers for diabetes nephropathy. Conventional methods for the quantification of urinary proteins, however, are time-consuming, and most require radioactive labeling. We designed a label-free piezoelectric quartz crystal microbalance (QCM) immunosensor array to simultaneously quantify 4 urinary proteins. METHODS We constructed a 2 x 5 ...

2016
He Huang Minghuan Liu Xiangsheng Wang Wenjie Zhang Da-Peng Yang Lianhua Cui Xiansong Wang

It is highly desirable to develop a rapid and simple method to detect pathogens. Combining nanomaterials with electrochemical techniques is an efficient way for pathogen detection. Herein, a novel 3D Ag nanoflower was prepared via a biomineralization method by using bovine serum albumin (BSA) as a template. It was adopted as a sensing interface to construct an electrochemical bacteria immunosen...

Journal: :Clinical chemistry 2007
Dianping Tang Ruo Yuan Yaqin Chai

BACKGROUND Methods based on magnetic bead probes have been developed for immunoassay, but most involve complicated labeling or stripping procedures and are unsuitable for routine use. METHODS We synthesized magnet core/shell NiFe(2)O(4)/SiO(2) nanoparticles and fabricated an electrochemical magnetic controlled microfluidic device for the detection of 4 tumor markers. The immunoassay system co...

2017
Mauro Tomassetti Giovanni Merola Elisabetta Martini Luigi Campanella Gabriella Sanzó Gabriele Favero Franco Mazzei

In this research, we developed a direct-flow surface plasmon resonance (SPR) immunosensor for ampicillin to perform direct, simple, and fast measurements of this important antibiotic. In order to better evaluate the performance, it was compared with a conventional amperometric immunosensor, working with a competitive format with the aim of finding out experimental real advantages and disadvanta...

2014
Urszula Jarocka Róza Sawicka Anna Góra-Sochacka Agnieszka Sirko Wlodzimierz Zagórski-Ostoja Jerzy Radecki Hanna Radecka

This paper concerns the development of an immunosensor for detection of peptides derived from avian influenza hemagglutinin H5. Its preparation consists of successive gold electrode modification steps: (i) modification with 1,6-hexanedithiol and gold colloidal nanoparticles; (ii) immobilization of antibody-binding fragments (Fab') of anti-hemagglutinin H5 monoclonal antibodies Mab 6-9-1 via S-A...

Journal: :Biosensors & bioelectronics 2011
Guosong Lai Jie Wu Chuan Leng Huangxian Ju Feng Yan

An ultrasensitive multiplexed electrochemical immunoassay method was developed for the detection of tumor markers by combining a newly designed trace tag and a disposable immunosensor array. The array was prepared by immobilizing capture antibodies on gold nanoparticles which were assembled on carbon nanotubes-chitosan modified screen-printed carbon electrodes. The trace tag was prepared by loa...

Journal: :Biosensors & bioelectronics 2011
Yunxian Piao Zongwen Jin Dohoon Lee Hye-Jin Lee Hyon-Bin Na Taeghwan Hyeon Min-Kyu Oh Jungbae Kim Hak-Sung Kim

We demonstrate a highly sensitive electrochemical immunosensor based on the combined use of substrate recycling and carbon nanotubes (CNTs) coated with tyrosinase (TYR) and magnetic nanoparticles (MNP). Both TYR and MNP were immobilized on the surface of CNTs by covalent attachment, followed by additional cross-linking via glutaraldehyde treatment to construct multi-layered cross-linked TYR-MNP...

2009
Yeo-Heung Yun Amit Bhattacharya Nelson B. Watts Mark J. Schulz

This paper describes the development of a biosensor based on label-free immunosensing for the detection of the C-terminal telopeptide bone turnover marker from type-1 collagen. A self-assembled monolayer (SAM) of dithiodipropionic acid was deposited on a gold electrode. Then streptavidin and biotinylated anti-human C-terminal telopeptide antibody were successively conjugated on the self-assembl...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید