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- W2038605859 abstract "24S-Hydroxycholesterol (24OHC) and 27-hydroxycholesterol (27OHC) are two structurally similar oxysterols of different origins--the former almost exclusively formed in the brain and the latter formed to a lesser extent in the brain than in most other organs. HYPOTHESIS TO BE TESTED: Neuronal damage and/or demyelination causes increased flux of 24OHC from the brain into the cerebrospinal fluid (CSF), whereas a defect blood-brain barrier causes increased flux of 27OHC from the circulation into the CSF.Isotope dilution-mass spectrometry was used to assay the two oxysterols in CSF and plasma from more than 250 patients with different neurological and geriatric diseases.The CSF-levels of the two oxysterols were much more affected by the different diseases than the plasma levels. Patients with active demyelinating diseases had increased levels of 24OHC in CSF with a relatively high 24OHC/27OHC ratio. Patients with meningitis in general had high levels of both steroids with a low 24OHC/27OHC ratio. Patients with Alzheimer's disease had slightly increased levels of 24OHC in CSF with less increase in 27OHC. Patients with multiple sclerosis had a tendency to have higher levels of 24OHC during active periods with a high 24OHC/ 27OHC ratio.Measurements of the two oxysterols in CSF and plasma may add significantly to existing biochemical methods for evaluation of neurological diseases." @default.
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- W2038605859 date "2004-01-18" @default.
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- W2038605859 title "Diagnostic use of cerebral and extracerebral oxysterols" @default.
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- W2038605859 doi "https://doi.org/10.1515/cclm.2004.034" @default.
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