CSF tau correlates with CJD disease severity and cognitive decline

Area of Science:

• Neuroscience
• Neurology
• Biomarker Research

Background:

• Creutzfeldt-Jakob disease (CJD) is the most common human prion disease.
• Clinical diagnosis relies on EEG, MRI, and CSF biomarkers.
• CSF tau, a marker of neuronal damage, correlates with cognitive status in Alzheimer's disease.

Purpose of the Study:

• To investigate the correlation between CSF tau levels and neurological/cognitive decline in familial CJD (fCJD).
• To assess if CSF tau reflects disease severity and cognitive performance in fCJD patients.

Main Methods:

• Consecutive fCJD patients underwent neurological examinations and cognitive tests (MMSE, FAB, NIHSS, CJD-NS, EDSS).
• Cerebrospinal fluid (CSF) tau levels were measured.
• Pearson correlation analysis was used to test the association between CSF tau and clinical scales.

Main Results:

• Fifty-two fCJD patients (35 males, mean age 59.4) were studied.
• Significant negative correlation found between CSF tau and cognitive scores (MMSE, FAB).
• Significant positive correlation found between CSF tau and disease severity scales (CJD-NS, NIHSS, EDSS).

Conclusions:

• CSF tau levels correlate with disease severity and cognitive decline in fCJD.
• Tau may serve as a valuable biomarker indicating the extent of neuronal damage in CJD.