Abstract
Concentrations of free dolichol, total non-phosphorylated dolichol, and total phosphorylated dolichol were measured in autopsy specimens of brain and liver from ceroid-lipofuscinosis (CL) and control cases. Levels of non-phosphorylated dolichol, mainly as free dolichol, were increased approximately two-fold in late-infantile CL brain. No increase was observed for CL liver. In late-infantile and juvenile CL brain, the increase in phosphorylated dolichol was at least ten-fold, but no significant difference was found for CL liver. A substantial part of the increase in phosphorylated dolichol in CL brain appeared to be due to lipid-linked oligosaccharides. The results suggest that CL might involve a defect in the metabolism of dolichol-linked oligosaccharides.
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