NeuroMolecular Medicine

, Volume 20, Issue 4, pp 498–503 | Cite as

Plasma β-Amyloids and Tau Proteins in Patients with Vascular Cognitive Impairment

  • Sung-Chun Tang
  • Kai-Chien Yang
  • Chih-Hao Chen
  • Shieh-Yueh Yang
  • Ming-Jang Chiu
  • Chau-Chung Wu
  • Jiann-Shing Jeng
Original Paper


Increases in plasma of β-amyloids (Aβ) and tau proteins have been noted in patients with Alzheimer’s dementia (AD). Our study investigated the associations of plasma Aβ and tau proteins with dementia in stroke patients. This cross-sectional study recruited 24 controls (mean age: 67.4 ± 7.5 years, 33.3% male), 27 stroke patients without dementia (mean age: 70.7 ± 6.9 years, 60.7% male), 34 stroke patients with dementia (mean age: 78.3 ± 5.3 years, 45.5% male, Clinical Dementia Ranking (CDR): 1.46 ± 0.63), and 21 AD patients (mean age: 77.1 ± 9.1 years, 42.9% male, CDR: 1.43 ± 0.60) from a medical center. Dementia was defined as a CDR scale score of ≥ 1. The plasma levels of Aβ-40, Aβ-42, and tau were analyzed using immunomagnetic reduction. One-way analysis of variance was used to compare the differences in measured protein levels between the groups. The results indicated that plasma levels of tau and Aβ-42, but not Aβ-40, in stroke patients were significantly higher than in the controls. After adjustment for age, sex, diabetes mellitus, hypertension, and hyperlipidemia, only plasma level of Aβ-42 remained significantly higher in stroke patients with dementia than in those without dementia (OR 1.85, 1.25–2.75, p = 0.002). In summary, our results suggest that plasma Aβ-42 is a potential biomarker for dementia in stroke patients.


Stroke Vascular dementia Amyloid beta Tau protein 



The authors thank the 3rd core facility at National Taiwan University Hospital for support.


This work was supported by Taiwan Ministry of Science and Technology Grant (105-2314-B-002-001).

Compliance with Ethical Standards

Conflict of interest

The authors declare that they have no conflicts of interest.


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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Sung-Chun Tang
    • 1
  • Kai-Chien Yang
    • 2
    • 3
  • Chih-Hao Chen
    • 1
  • Shieh-Yueh Yang
    • 4
  • Ming-Jang Chiu
    • 1
  • Chau-Chung Wu
    • 2
    • 5
  • Jiann-Shing Jeng
    • 1
  1. 1.Department of NeurologyNational Taiwan University HospitalTaipeiTaiwan
  2. 2.Division of Cardiology, Departments of Internal MedicineNational Taiwan University HospitalTaipeiTaiwan
  3. 3.Department and Graduate Institute of PharmacologyNational Taiwan University, College of MedicineTaipeiTaiwan
  4. 4.MagQu Co. Ltd.New Taipei CityTaiwan
  5. 5.Department & Graduate Institute of Medical Education & Bioethics, College of MedicineNational Taiwan UniversityTaipeiTaiwan

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