Is methylprednisolone effective in treating cognitive impairment in DMD?

Chinese researchers studied the potentially positive effects of intraperitoneal corticosteroid injection in a mouse model of Duchenne muscular dystrophy (DMD):

  • the working hypothesis was that methylprednisolone (MP) could improve the cognitive and behavioural disorders observed naturally in these diseased mice,
  • the study included neuropsychological tests, brain tissue analysis and proteomic profiling,
  • MP appears to have had a beneficial effect on cognitive disorders, dendritic arborisation and the re-expression of several proteins of interest (Dp71, GABRA2 and PSD-95).

The authors emphasise the importance of the NF-kB/CCL5 pathway in explaining this phenomenon. Although interesting, these findings are not necessarily transferable to humans.

 

Methylprednisolone Restores Cognitive Impairment in mdx Mice by Inhibiting NF-κB/CCL5-mediated Neuroinflammation. Zhang X, Han Z, Wang L et al. Mol Neurobiol. 2025 Nov 21;63(1):122.