MALDI Mass Spectrometry Imaging in a Primary Demyelination Model of Murine Spinal Cord.

Abstract

Destruction of myelin, or demyelination, is a characteristic of traumatic spinal cord injury and pathognomonic for primary demyelinating pathologies such as multiple sclerosis (MS). The regenerative process known as remyelination, which can occur following demyelination, fails as MS progresses. Models of focal demyelination by local injection of gliotoxins have provided important biological insights into the demyelination/remyelination process. Here, injection of lysolecithin to induce spinal cord demyelination is investigated using matrix-assisted laser desorption/ionization mass spectrometry imaging. A segmentation analysis revealed changes to the lipid composition during lysolecithin-induced demyelination at the lesion site and subsequent remyelination over time. The results of this study can be utilized to identify potential myelin-repair mechanisms and in the design of therapeutic strategies to enhance myelin repair.

• Authors: Emily R Sekera, Darpan Saraswat, Kevin J Zemaitis, Fraser J Sim, Troy D Wood
• Journal: Journal of the American Society for Mass Spectrometry (J Am Soc Mass Spectrom) Vol. 31 Issue 12 Pg. 2462-2468 (Dec 02 2020) ISSN: 1879-1123 [Electronic] United States
• PMID: 32926612 (Publication Type: Journal Article)

Chemical References

• Lipids
• Lysophosphatidylcholines

Topics

• Animals
• Demyelinating Diseases (chemically induced, pathology)
• Disease Models, Animal
• Female
• Lipids (analysis)
• Lysophosphatidylcholines (adverse effects)
• Mice, Inbred BALB C
• Myelin Sheath (chemistry, pathology)
• Remyelination
• Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization (methods)
• Spinal Cord (chemistry, pathology)