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• W2562554195 endingPage "e0167819" @default.
• W2562554195 startingPage "e0167819" @default.
• W2562554195 abstract "Neuromyelitis optica (NMO) is an inflammatory demyelinating disease of the central nervous system (CNS). Hydroxycholesterols (OHCs), metabolites of CNS cholesterol, are involved in diverse cellular responses to inflammation and demyelination, and may also be involved in the pathogenesis of NMO. We aimed to develop a sensitive and reliable method for the quantitative analysis of three major OHCs (24S-, 25-, and 27-OHCs), and to evaluate their concentration in the cerebrospinal fluid (CSF) and serum of patients with NMO. The levels of the three OHCs in the serum and CSF were measured using liquid chromatography-silver ion coordination ionspray tandem mass spectrometry and liquid chromatography-electrospray ionization tandem mass spectrometry with picolinyl ester derivatization, respectively. The linear range was 5-250 ng/mL for 24S- and 27-OHC, and 0.5-25 ng/mL for 25-OHC in serum, and was 0.1-5 ng/mL for 24S- and 27-OHC, and 0.03-1 ng/mL for 25-OHC in CSF. Precision and accuracy were 0.5%-14.7% and 92.5%-109.7%, respectively, in serum, and were 0.8%-7.7% and 94.5%-119.2%, respectively, in CSF. Extraction recovery was 82.7%-90.7% in serum and 68.4%-105.0% in CSF. When analyzed in 26 NMO patients and 23 control patients, the 25-OHC (0.54 ± 0.96 ng/mL vs. 0.09 ± 0.04 ng/mL, p = 0.032) and 27-OHC (2.68 ± 3.18 ng/mL vs. 0.68 ± 0.25 ng/mL, p = 0.005) were increased in the CSF from NMO patients. When we measured the OHCCSF index that controls the effects of blood-brain barrier disruption on the level of OHC in the CSF, the 27-OHCCSF index was associated with disability (0.723; 95% confidence interval (CI)- 0.181, 0.620; p = 0.002), while the 24-OHCCSF index (0.518; 95% CI- 1.070, 38.121; p = 0.040) and 25-OHCCSF index (0.677; 95% CI- 4.313, 18.532; p = 0.004) were associated with the number of white blood cells in the CSF of NMO patients. Our results imply that OHCs in the CNS could play a role in the pathogenesis of NMO." @default.
• W2562554195 created "2017-01-06" @default.
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• W2562554195 date "2016-12-12" @default.
• W2562554195 modified "2023-10-10" @default.
• W2562554195 title "Hydroxycholesterol Levels in the Serum and Cerebrospinal Fluid of Patients with Neuromyelitis Optica Revealed by LC-Ag+CIS/MS/MS and LC-ESI/MS/MS with Picolinic Derivatization: Increased Levels and Association with Disability during Acute Attack" @default.
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• W2562554195 doi "https://doi.org/10.1371/journal.pone.0167819" @default.
• W2562554195 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5152860" @default.
• W2562554195 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/27942009" @default.
• W2562554195 hasPublicationYear "2016" @default.
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