Publications and protocols



Sample preparation protocol using Tag-ON products, FMP-8, FMP-9 and FMP-10.


Note. Avoid using plastic reservoirs. Prepare all solutions in glass vials as fresh as possible (just before spraying the solution). The present protocol includes the use of a TMsprayer™️ (HTX Technologies, LLC).


  1. Weigh 10 mg of the FMP compound.
  2. Dissolve the compound in 5.5 ml of 70% acetonitrile.
  3. Sonicate the solution for about 1 min.
  4. Fill in the 5 ml loop of the TM sprayer and apply the derivatizing matrix with the following parameters:

      flow rate 80 µl/min, spray nozzle temperature 80o C, spray nozzle velocity 1100mm/min, number of passes 20 (all horizontal), track spacing          2mm, and N2 gas pressure 6 psi (this corresponds to 0.2 mg/cm2).

      Sample is then ready to be analyzed by MS in positive ion mode.


      Use the following table to calculate m/z values of your derivatized compounds.  



Phenolic hydroxyl and amine specific reactive matrix (FMP-8, FMP-9 and FMP-10)


  1. Fridjonsdottir E, Shariatgorji R, Nilsson A, Vallianatou T, Odell LR, Schembri L, Svenningsson P, Fernagut PO, Crossman A, Bezard E, Andrén PE

    Mass spectrometry imaging identifies abnormally elevated brain l-DOPA levels and extrastriatal monoaminergic dysregulation in l-DOPA–induced dyskinesia. Science Advances. 2021 7 (2): eabe5948

  2. Mantas I, Vallianatou T, Yang Y, Shariatgorji R, Kalomoiri M, Fridjonsdottir E, Millan MJ, Zhang X, Andrén PE, Svenningsson P. 

    TAAR1-Dependent and -Independent Actions of Tyramine in Interaction With Glutamate Underlie Central Effects of Monoamine Oxidase Inhibition. Biological Psychiatry. 2020 3223 (20): 32116-8

  3. Shariatgorji M, Nilsson A, Fridjonsdottir E, Vallianatou T, Källback P, Katan L, Sävmarker J, Mantas I, Zhang X, Bezard E, Svenningsson P, Odell LR, Andrén PE. Comprehensive mapping of neurotransmitter networks by MALDI-MS imaging. Nature Methods. 2019 16 (10): 1021-1028


Primary amine specific reactive matrix (DPP-TFB)


  1. Shariatgorji M, Strittmatter N, Nilsson A, Källback P, Alvarsson A, Zhang X, Vallianatou T, Svenningsson P, Goodwin RJ, Andren PE. Simultaneous imaging of multiple neurotransmitters and neuroactive substances in the brain by desorption electrospray ionization mass spectrometry. Neuroimage. 2016 1 (136) 129-38
  2. Shariatgorji M, Nilsson A, Källback P, Karlsson O, Zhang X, Svenningsson P, Andren PE. Pyrylium Salts as Reactive Matrices for MALDI-MS Imaging of Biologically Active Primary Amines. J Am Soc Mass Spectrom. 2015 26 (6):934-9
  3. Shariatgorji M, Nilsson A, Goodwin RJ, Källback P, Schintu N, Zhang X, Crossman AR, Bezard E, Svenningsson P, Andren PE. Direct targeted quantitative molecular imaging of neurotransmitters in brain tissue sections. Neuron. 2014 84 (4):697-707

1996 - 1998

B.A. | State University, Physics