AI Article Synopsis
- Recent research highlights the importance of clearing neurotoxic proteins through cerebrospinal fluid (CSF) to blood for predicting neurological diseases, introducing new plasma biomarkers.
- The study involved 106 individuals with neurological disorders and examined the relationship between specific plasma biomarkers (like amyloid-β, total-tau, GFAP, and NfL) and brain imaging measures related to CSF clearance and glymphatic function.
- Findings indicate that while plasma levels of neurodegeneration markers correlate with CSF clearance measures, these levels fluctuate throughout the day and are not significantly influenced by sleep quality.
Article Abstract
Clearance of neurotoxic brain proteins via cerebrospinal fluid (CSF) to blood has recently emerged to be crucial, and plasma biomarkers of neurodegeneration were newly introduced to predict neurological disease. This study examines in 106 individuals with neurological disorders associations between plasma biomarkers [40 and 42 amino acid-long amyloid-β (Aβ40 and Aβ42), total-tau, glial fibrillary acidic protein (GFAP), and neurofilament light (NfL)] and magnetic resonance imaging measures of CSF-mediated clearance from brain via extra-vascular pathways (proxy of glymphatic function) and CSF-to-blood clearance variables from pharmacokinetic modeling (proxy of meningeal lymphatic egress). We also examine how biomarkers vary during daytime and associate with subjective sleep quality. Plasma concentrations of neurodegeneration markers associate with indices of glymphatic and meningeal lymphatic functions in individual- and disease-specific manners, vary during daytime, but are unaffected by sleep quality. The results suggest that plasma concentrations of neurodegeneration biomarkers associate with measures of glymphatic and meningeal lymphatic function.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10097687 | PMC |
| http://dx.doi.org/10.1038/s41467-023-37685-5 | DOI Listing |
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