Neurobiological effects of sphingosine 1-phosphate receptor modulation in the cuprizone model.

ABSTRACT: Fingolimod (FTY720) is a sphingosine 1-phosphate (S1P) receptor modulator that regulates lymphocyte trafficking and exerts pleiotropic actions on oligodendrocytes (OLGs) and other neural cells. The purpose of this study was to investigate the role of S1P receptors in a non-T-cell model of demyelination, the cuprizone (cupr) model in C57BL/6 mice. Treatment with FTY720 (1 mg/kg) led to attenuated injury to OLGs, myelin, and axons in the corpus callosum (percentage of myelinated fibers was 44.7% in cupr-water and 63% in cupr-FTY720). Reactive astrogliosis and microgliosis were ameliorated when FTY720 was given from d 1, but astrogliosis was augmented when FTY720 was given from wk 4-9. FTY720 did not promote remyelination in this model. The protective effect of FTY720 was associated with decr

SUBMITTER: Kim HJ 

PROVIDER: S-EPMC3079302 | biostudies-literature | 2011 May

REPOSITORIES: biostudies-literature