Imperial College London
Professor Danny O'Hare

ProfessorDannyO'Hare

Faculty of Engineering, Department of Bioengineering

Professor of Biosensor Technology
 
 
 
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Contact

 

+44 (0)20 7594 5173d.ohare

 
 
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Location

 

4.07Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Zhang:2022:10.1021/acssensors.2c01739,
author = {Zhang, S and Chen, Y-C and Riezk, A and Ming, D and Tsvik, L and Sutzl, L and Holmes, A and O'Hare, D},
doi = {10.1021/acssensors.2c01739},
journal = {ACS Sensors},
pages = {3809--3816},
title = {Rapid measurement of lactate in exhaled breath condensate: biosensor optimisation and in-human proof-of-concept},
url = {http://dx.doi.org/10.1021/acssensors.2c01739},
volume = {7},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Lactate concentration is of increasing interest as a diagnostic for sepsis, septic shock, and trauma. Compared with the traditional blood sample media, the exhaled breath condensate (EBC) has the advantages of non-invasiveness and higher user acceptance. An amperometric biosensor was developed and its application in EBC lactate detection was investigated in this paper. The sensor was modified with PEDOT:PSS-PB, and two different lactate oxidases (LODs). A rotating disk electrode and Koutecky–Levich analysis were applied for the kinetics analysis and gel optimization. The optimized gel formulation was then tested on disposable screen-printed sensors. The disposable sensors exhibited good performance and presented a high stability for both LOD modifications. Finally, human EBC analysis was conducted from a healthy subject at rest and after 30 min of intense aerobic cycling exercise. The sensor coulometric measurements showed good agreement with fluorometric and triple quadrupole liquid chromatography mass spectrometry reference methods. The EBC lactate concentration increased from 22.5 μM (at rest) to 28.0 μM (after 30 min of cycling) and dropped back to 5.3 μM after 60 min of rest.
AU  - Zhang,S
AU  - Chen,Y-C
AU  - Riezk,A
AU  - Ming,D
AU  - Tsvik,L
AU  - Sutzl,L
AU  - Holmes,A
AU  - O'Hare,D
DO  - 10.1021/acssensors.2c01739
EP  - 3816
PY  - 2022///
SN  - 2379-3694
SP  - 3809
TI  - Rapid measurement of lactate in exhaled breath condensate: biosensor optimisation and in-human proof-of-concept
T2  - ACS Sensors
UR  - http://dx.doi.org/10.1021/acssensors.2c01739
UR  - http://hdl.handle.net/10044/1/101542
VL  - 7
ER  -
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