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Identification of catecholamine neurotransmitters using a fluorescent electronic tongue

Jafarinejad, S ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. DOI: 10.1021/acschemneuro.9b00537
  3. Publisher: American Chemical Society , 2020
  4. Abstract:
  5. Catecholamine neurotransmitters, specifically, dopamine (DA), epinephrine (EP), and norepinephrine (NE), are known as substantial indicators of various neurological diseases. Developing rapid detection methods capable of simultaneously screening their concentrations is highly desired for early clinical diagnosis of such diseases. To this aim, we have designed an optical sensor array using three fluorescent dyes with distinct emission bands and have monitored variations in their emission profiles upon the addition of DA, EP, and NE in the presence of gold ions. Because of the different reducing power of catecholamines, differently sized gold nanoparticles (GNPs) with different levels of aggregation were generated, resulting in different amounts of spectral overlap between the absorption band of the in situ generated plasmonic GNPs and the emission bands of the fluorescent dyes. These energy-transfer-based fingerprint profiles were used to discriminate the neurotransmitters by applying pattern recognition methods including linear discriminant analysis (LDA) and artificial neural networks (ANN) and to determine their concentration using multiple linear regression (MLR). Our proposed array also showed a good performance in the discrimination of DA, EP, and NE in complex biological media such as human urine. © 2019 American Chemical Society
  6. Keywords:
  7. Catecholamine neurotransmitters ; Fluorescent dyes ; Gold nanoparticles ; Sensor array ; Dopamine ; Epinephrine ; Gold nanoparticle ; Noradrenalin ; Bulk density ; Critical micelle concentration ; Discriminant analysis ; Drug mixture ; Energy transfer ; Human ; Multiple linear regression analysis ; Neurologic disease ; Oxidation ; Pattern recognition ; Priority journal ; Surface plasmon resonance ; Urine sampling
  8. Source: ACS Chemical Neuroscience ; Volume 11, Issue 1 , November , 2020 , Pages 25-33
  9. URL: https://pubs.acs.org/doi/abs/10.1021/acschemneuro.9b00537