Levels of neurogranin are elevated in the cerebrospinal fluid of people with mild cognitive impairment who carry the apolipoprotein E (APOE) ɛ4 allele, new research has shown. APOE* ɛ4 is the most important genetic risk factor for AD, but the pathophysiological link between the risk allele and AD has remained elusive. Neurogranin is a marker of synaptic injury, and the new data suggest that APOE* ɛ4 carriers are susceptible to synaptic damage manifests as cognitive decline.
References
Sun, X. et al. APOE ɛ4 carriers may undergo synaptic damage conferring risk of Alzheimer's disease. Alzheimers Dement. http://dx.doi.org/10.1016/j.jalz.2016.05.003 (2016)
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Elevated neurogranin levels reveal early synaptic damage in APOE* ɛ4 carriers. Nat Rev Neurol 12, 430 (2016). https://doi.org/10.1038/nrneurol.2016.102
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DOI: https://doi.org/10.1038/nrneurol.2016.102
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