Cerebrospinal fluid markers in children with cerebral white matter abnormalities

Disorders of the cerebral white matter in children constitute a heterogeneo us group and the diagnostic work is often complicated. Clinical and radiolo gical characteristics can provide diagnostic clues but there is a need for further diagnostic methods. This study focused on assessing neurochemical " markers" in the cerebrospinal fluid considered to reflect damage to white m atter components such as myelin and glial cells as well as neurones with th eir axons and synapses. The aim was to evaluate whether they contributed to the elucidation of pathogenic processes and the direction of further diagn ostic efforts. Seventeen of the 26 cases had increased levels of the glial cell marker ganglioside GD3, indicating gliosis, or of the CNS myelin marke r sulfatide, indicating myelin disturbance. As signs of disturbed maturatio n or sustenance, the nerve cell markers GD1 b, GT1 b and total gangliosides were reduced, as was the synapse marker GD1 a. Increased 5-HIAA indicated increased serotonergic turnover. Children with an increased level of the ax onal marker Tau protein had a progressive disease whereas GD1 a was reduced in the progressive group (n=11). In contrast, GD3 and HVA were increased i n the non-progressive group (n = 15). The chemical profiles were found to b e useful, in combination with clinical and radiological findings, when inve stigating children with white matter abnormalities.