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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Direct Visualization of Neurotransmitters in Rat Brain Slices by Desorption Electrospray Ionization Mass Spectrometry Imaging (DESI - MS)

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Fernandes, Anna Maria A. P. ; Vendramini, Pedro H. ; Galaverna, Renan ; Schwab, Nicolas V. ; Alberici, Luciane C. ; Augusti, Rodinei ; Castilho, Roger F. ; Eberlin, Marcos N.
Total Authors: 8
Document type: Journal article
Source: JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY; v. 27, n. 12, p. 1944-1951, DEC 2016.
Web of Science Citations: 9

Mass spectrometry imaging (MSI) of neurotransmitters has so far been mainly performed by matrix-assisted laser desorption/ionization (MALDI) where derivatization reagents, deuterated matrix and/or high resolution, or tandem MS have been applied to circumvent problems with interfering ion peaks from matrix and from isobaric species. We herein describe the application of desorption electrospray ionization mass spectrometry imaging (DESI)-MSI in rat brain coronal and sagittal slices for direct spatial monitoring of neurotransmitters and choline with no need of derivatization reagents and/or deuterated materials. The amino acids gamma-aminobutyric (GABA), glutamate, aspartate, serine, as well as acetylcholine, dopamine, and choline were successfully imaged using a commercial DESI source coupled to a hybrid quadrupole-Orbitrap mass spectrometer. The spatial distribution of the analyzed compounds in different brain regions was determined. We conclude that the ambient matrix-free DESI-MSI is suitable for neurotransmitter imaging and could be applied in studies that involve evaluation of imbalances in neurotransmitters levels. (AU)

FAPESP's process: 10/51677-2 - Development of new mass spectrometry techniques and their general applications in science: chemistry, biochemistry, material sciences, forensics, medicine, food science, pharmaceutical and veterinary medicine
Grantee:Marcos Nogueira Eberlin
Support type: Research Projects - Thematic Grants
FAPESP's process: 11/50400-0 - Mitochondrial energy metabolism, redox state and functionality in cell death and cardiometabolic and neurodegenerative disorders
Grantee:Aníbal Eugênio Vercesi
Support type: Research Projects - Thematic Grants