Results 1 to 10 of about 655 (88)

Construction of a Label-Free Electrochemical Immunosensor Based on Zn-Co-S/Graphene Nanocomposites for Carbohydrate Antigen 19-9 Detection

Nanomaterials, 2021
Nanocomposites of the binary transition metal sulfide Zn-Co-S/graphene (Zn-Co-S@G) were synthesized through a one-step hydrothermal method. They may be useful in the construction of an electrochemical immunosensor for carbohydrate antigen 19-9 (CA19-9 ...
Chia-Wei Su, Jia-Hao Tian, Jin-Jia Ye, Han-Wei Chang, Yu-Chen Tsai   +4 more
doaj   +3 more sources

Label-Free Detection of CA19-9 Using a BSA/Graphene-Based Antifouling Electrochemical Immunosensor

Sensors, 2023
Evaluating the levels of the biomarker carbohydrate antigen 19-9 (CA19-9) is crucial in early cancer diagnosis and prognosis assessment. In this study, an antifouling electrochemical immunosensor was developed for the label-free detection of CA19-9, in ...
Wei Chen, Miaomiao Chi, Miaomiao Wang, Yage Liu, Shu Kong, Liping Du, Jian Wang, Chunsheng Wu   +7 more
doaj   +1 more source

An ultrasensitive electrochemical immunosensor for CA72-4 based on a signal amplification strategy of MoS2 nanoflower-supported Au nanoparticles

Journal of Saudi Chemical Society, 2023
Accurate detection of cancer antigen 72-4 (CA72-4), a tumor-associated glycoprotein, is of great significance for gastric cancer diagnosis and immunotherapy monitoring.
Qinghua Yan, Ruixue Wu, Hongli Chen, Wenbin Nan   +3 more
doaj   +1 more source

Label-free electrochemical immunosensor for highly sensitive COVID-19 spike protein detection

Sensors and Actuators Reports, 2022
The ongoing coronavirus pandemic responsible for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has rapidly increased the rate of global death and infections due to variant mutations (such as Delta and Omicron). While specifically developed
Qingfeng Zhai, Xichu Wang, Chuangang Hu, Lin Zhu, Chenhao Zhang, Liming Dai   +5 more
doaj   +1 more source

Bioengineered Monoclonal Antibody Chitosan–Iron Oxide Bio-Composite for Electrochemical Sensing of Mycobacterium tuberculosis Lipoprotein

Engineering Proceedings, 2023
In this study, an electrochemical immunosensor for the detection of the 19 kDa Mycobacterium tuberculosis lipoprotein LpqH was developed using a monoclonal antibody immobilized on a chitosan-coated iron oxide bio-composite.
Resmond L. Reaño, Glenson R. Panghulan, Clydee Ann T. Hernandez, Jeffrey P. Tamayo   +3 more
doaj   +1 more source

A Label-Free Electrochemical Immunosensor for CEA Detection on a Novel Signal Amplification Platform of Cu2S/Pd/CuO Nanocomposites

Frontiers in Bioengineering and Biotechnology, 2021
Carcinoembryonic antigen (CEA) is regarded as one of the crucial tumor markers for colorectal cancer. In this study, we developed the snowflake Cu2S/Pd/CuO nanocomposite to construct an original label-free electrochemical immunosensor for the ...
Linlin Cao, Linlin Cao, Wen Zhang, Sumei Lu, Sumei Lu, Chengjie Guo, Peijun Wang, Dantong Zhang, Wanshan Ma, Wanshan Ma   +9 more
doaj   +1 more source

Electrochemical Detection of Lactobacillus Rhamnosus in Fermented Food Using Magnetic Immunosensor based on Au-Fe3O4

International Journal of Electrochemical Science, 2022
This study was conducted on the preparation of a high stable and accurate magnetic NPs-based electrochemical immunosensor for the determination of probiotic Lactobacillus rhamnosus (LGG) in fermented foods.
Yin Feng, Yan Liu, Ying Li, Jiamiao Lv, Haiyan Chen   +4 more
doaj   +1 more source

Electrochemical immunosensor based on gold-thionine for detection of subarachnoid hemorrhage biomarker

Frontiers in Bioengineering and Biotechnology, 2023
Introduction: In clinical work, the realization of an early diagnosis of Subarachnoid hemorrhage (SAH) is primarily based on conventional computed tomography (CT), MR angiography, transcranial Doppler (TCD) ultrasound, and neurological assessments ...
Mengyue Wang, Feng Gao, Shoujie Ni, Yanan Song, Yanan Song, Cai Wang, Qian Li, Peng Zhao   +7 more
doaj   +1 more source

An electrochemical immunosensor on a carbon nanofiber/gold nanoparticles platform for the detection of alpha-feto protein cancer biomarker

Sensing and Bio-Sensing Research, 2023
We report an alpha – fetoprotein (AFP) cancer biomarker electrochemical immunosensor detected on a carbon nanofiber (CNF) and gold nanoparticles (AuNPs) platform. Functionalised carbon nanofiber and gold nanoparticles were immobilised through drop drying
Foluke O.G. Olorundare, Dimpo S. Sipuka, Tsholofelo I. Sebokolodi, Sesethu Makaluza, Nyasha Midzi, Tetsuya Kodama, Omotayo A. Arotiba, Duduzile Nkosi   +7 more
doaj   +1 more source

A Bifunctional Nanosilver-Reduced Graphene Oxide Nanocomposite for Label-Free Electrochemical Immunosensing

Frontiers in Chemistry, 2021
A bi-functional material based on silver nanoparticles (AgNPs)-reduced graphene oxide (rGO) composite for both electrode modification and signal generation is successfully synthesized for use in the construction of a label-free electrochemical ...
Supakeit Chanarsa, Supakeit Chanarsa, Jaroon Jakmunee, Jaroon Jakmunee, Kontad Ounnunkad, Kontad Ounnunkad, Kontad Ounnunkad   +6 more
doaj   +1 more source