Pharmacokinetic and pharmacometabolomic study of pirfenidone in normal mouse tissues using high mass resolution MALDI-FTICR-mass spectrometry imaging

2015 ◽  
Vol 145 (2) ◽  
pp. 201-211 ◽  
Author(s):  
Na Sun ◽  
Isis E. Fernandez ◽  
Mian Wei ◽  
Yin Wu ◽  
Michaela Aichler ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Mass Spectrometry Imaging ◽  
Normal Mouse ◽  
Mass Resolution ◽  
High Mass ◽  
Fticr Mass Spectrometry ◽  
Mouse Tissues ◽  
High Mass Resolution

scholarly journals High mass resolution MALDI-TOF MS for profiling biomolecules in mixtures

2018 ◽  
Author(s):  
Wenfa Ng
Keyword(s):  
Mass Spectrometry ◽  
Time Of Flight ◽  
High Sensitivity ◽  
Mass Resolution ◽  
High Mass ◽  
Maldi Tof Ms ◽  
Maldi Tof ◽  
Flight Mass Spectrometry ◽  
High Mass Resolution ◽  
Tof Ms

Intact biomolecules carry its identity through its atomic constituents and mass, while fragmented biomolecules require reconstruction for their identity to be retrieved. Hence, for profiling biomolecules in mixtures, the goal would be the gentle ionization of biomolecules by mass spectrometry without inducing fragmentation. Doing so generates an ensemble of ionized intact biomolecules able to be profiled by high sensitivity time-of-flight detector for accurate determination of each biomolecule mass, and thus, identity. Specifically, in time-of-flight detection, high mass resolution determination would require high sensitivity in detecting small differences in time of arrival of biomolecule ions to the detector. While current time-of-flight mass spectrometry provides high mass resolution, greater mass resolution is needed for discriminating different biomolecules in a mixture, where mass differences between biomolecules could be at the sub-Dalton level. With the ability to reliably detect biomolecules with sub-Dalton mass resolution, mass spectrometry with time-of-flight detector such as matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) could find use in identifying the compendium of biomolecules present in a mixture without tedious and time-consuming separation. The larger question would subsequently be coupling sample preparation needs with the conditions conducive for MALDI-TOF MS analysis. Overall, high mass resolution mass spectrometry techniques for profiling biomolecules would find use as an enabling tool in many areas of analytical science and biological sciences such as proteomics and metabolomics.

High mass resolution glow discharge mass spectrometry using an external ion source FT-ICR mass spectrometer

1993 ◽  
Vol 65 (20) ◽  
pp. 2801-2804 ◽  
Author(s):  
Clifford H. Watson ◽  
John. Wronka ◽  
Frank H. Laukien ◽  
Christopher M. Barshick ◽  
John R. Eyler
Keyword(s):  
Mass Spectrometry ◽  
Glow Discharge ◽  
Mass Spectrometer ◽  
Ion Source ◽  
Mass Resolution ◽  
Glow Discharge Mass Spectrometry ◽  
High Mass ◽  
High Mass Resolution ◽  
Ft Icr
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