Elevated circulation postsynaptic density protein 95 as a potential biomarker for predicting the diagnosis and

Yan Dong1, Zhangping He1, Haohai Lin1

  • 1Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, China.

BMC Neurology
|December 15, 2025
PubMed

Insights

Plasma PSD95 levels are elevated in patients with cerebral infarction (CI) and correlate with disease severity. This suggests PSD95 may be a useful biomarker for diagnosing and predicting the prognosis of CI.

Area of Science:

  • Biomarkers
  • Neurology
  • Clinical Diagnostics

Background:

  • Cerebral infarction (CI) diagnosis and prognosis require reliable indices.
  • Plasma PSD95 levels are a novel biomarker not yet explored for CI diagnosis or prognosis.

Purpose of the Study:

  • To investigate the correlation between plasma PSD95 levels and clinical characteristics in CI patients.
  • To assess the utility of plasma PSD95 levels in predicting the prognosis of CI.

Main Methods:

  • Enzyme-linked immunosorbent assay (ELISA) was used to measure plasma PSD95 levels in 105 CI patients and 80 controls.
  • Neurological deficits were assessed using the National Institutes of Health Stroke Scale (NIHSS).
  • Statistical analyses examined associations between PSD95, clinical parameters, and outcomes.

Main Results:

  • Plasma PSD95 levels were significantly higher in CI patients than in controls (p < 0.01).
  • In CI patients, PSD95 levels negatively correlated with activated partial thromboplastin time (APTT) (p < 0.05).
  • PSD95 levels positively correlated with NIHSS scores at 6 months post-onset (p < 0.05).

Conclusions:

  • Plasma PSD95 shows potential as a diagnostic biomarker for cerebral infarction.
  • Plasma PSD95 may also serve as a prognostic biomarker for predicting outcomes in CI patients.
Abstract