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Throughout neurodegenerative diseases, biomarkers can improve the accuracy of diagnosis , help prognosis, and provide information for clinical trial design
.
Although biomarkers are routinely used for Alzheimer's disease (AD), the development of biomarkers has proven to be more challenging in Parkinson's disease (PD)
diagnosis
Unlike amyloid-β and tau in AD, no radioligand can be used to detect the hallmark pathological protein of Parkinson's disease--α-ynuclein, while the level of α-ynuclein in cerebrospinal fluid (CSF) is in patients and controls There is overlap between
.
So far, no specific blood or CSF biomarkers have been used for the clinical diagnosis or management of PD
.
In recent years, neurofilament light chain protein (NfL) has become a promising biomarker in a variety of neurodegenerative diseases
.
NfL is a neuron-specific component of the axon cytoskeleton, which can enter the extracellular space after axon damage or death; NfL has been quantified in plasma, serum and CSF
Although relatively non-specific, the NfL values in these intervals can be used as candidate biomarkers for nerve axon damage
However, few large-scale studies have performed longitudinal analysis of plasma and cerebrospinal fluid NfL
.
No previous studies have explored the question of whether plasma NfL levels at a single time point can predict longitudinal clinical outcomes
.
Using a large single-center cohort, Whitley W.
They included 615 participants with neurodegenerative diseases, including 152 PD and 200 healthy control participants, and provided plasma and/or cerebrospinal fluid (CSF) NfL samples
.
The Kruskal-Wallis grade test was used to compare the diagnostic groups
They found that there is a great correlation between plasma and cerebrospinal fluid NfL levels (Spearman r = 0.
64, P <0.
001); NfL is the highest in neurocognitive disorders
In general, plasma NfL is a useful prognostic biomarker of PD, which can predict clinical conversion to mild cognitive impairment or dementia
.
.
Original source:
Aamodt WW, Waligorska T, Shen J, et al.
Neurofilament Light Chain as a Biomarker for Cognitive Decline in Parkinson Disease .
Mov Disord.
Published online September 4, 2021:mds.
28779.
doi:10.
1002/mds.
28779Neurofilament Light Chain as a Biomarker for Cognitive Decline in Parkinson Disease in this message