Type

Journal Article

Authors

Elaine Spain
David C Henshall
Robert J Forster
Felix Rosenow
Peter Kӧrtvelyessy
Tessa Huchtemann
Muejgdan Dogan
Hajo Hamer
Norman Delanty
Hany ElNaggar
and 5 others

Subjects

Engineering

Topics
point of care human cells status epilepticus brain tissue rapid detection microfluidic device cerebrospinal fluid electrochemical detection

"TORNADO" - Theranostic One-Step RNA Detector; microfluidic disc for the direct detection of microRNA-134 in plasma and cerebrospinal fluid. (2017)

Abstract Diagnosis of seizure disorders such as epilepsy currently relies on clinical examination and electroencephalogram recordings and is associated with substantial mis-diagnosis. The miRNA, miR-134 (MIR134 in humans), has been found to be elevated in brain tissue after experimental status epilepticus and in human epilepsy cells and their detection in biofluids may serve as unique biomarkers. miRNAs from unprocessed human plasma and human cerebrospinal fluid samples were used in a novel electrochemical detection based on electrocatalytic platinum nanoparticles inside a centrifugal microfluidic device where the sandwich assay is formed using an event triggered release system, suitable for the rapid point-of-care detection of low abundance biomarkers of disease. The device has the advantage of controlling the rotation speed of the centrifugal device to pump nanoliter volumes of fluid at a set time and manipulate the transfer of liquids within the device. The centrifugal platform improves reaction rates and yields by proposing efficient mixing strategies to overcome diffusion-limited processes and improve mass transport rates, resulting in reduced hybridization times with a limit of detection of 1 pM target concentration. Plasma and cerebrospinal fluid samples (unprocessed) from patients with epilepsy or who experienced status epilepticus were tested and the catalytic response obtained was in range of the calibration plot. This study demonstrates a rapid and simple detection for epilepsy biomarkers in biofluid.
Collections Ireland -> Dublin City University -> PubMed

Full list of authors on original publication

Elaine Spain, David C Henshall, Robert J Forster, Felix Rosenow, Peter Kӧrtvelyessy, Tessa Huchtemann, Muejgdan Dogan, Hajo Hamer, Norman Delanty, Hany ElNaggar and 5 others

Experts in our system

1
Elaine Spain
Dublin City University
Total Publications: 15
 
2
David C Henshall
Royal College of Surgeons in Ireland
Total Publications: 127
 
3
Robert J. Forster
Dublin City University
Total Publications: 92
 
4
Felix Rosenow
Royal College of Surgeons in Ireland
Total Publications: 8
 
5
Norman Delanty
Royal College of Surgeons in Ireland
Total Publications: 49