Figure 2.

MALDI imaging mass spectrometry of (a) GD1d18:1/C18:0 and (b) GM2 d18:1/C18:0 in control and in the groups sacrificed 2, 24, and 72 h after open field blast exposure at 4 and 7 m. In panel a, GD1 is present mainly in gray matter areas (hippocampus, cortex, and hypothalamus), and there is no observable change in the distribution of GD1 between control and blast groups. In panel b, for the controls, the GM2 peak was highly localized in the lateral and the dorsal third ventricles while increases were observed in the hippocampus and thalamus for blast exposure, especially for 4 m 2 and 24 h postblast samples.