Decreased plasma Aβ levels were not associated with post‐stroke cognitive impairment: Biomarkers (non‐neuroimaging) / plasma/serum/urine biomarkers. (7th December 2020)

• Record Type: Journal Article
• Authors: Lu, Wenhui; Zhao, Yi; Shang, Suhang; Chen, Chen; Wang, Jin; Qu, Qiumin
• Is Part Of: Alzheimer's & dementia. Volume 16(2020)Supplement 4
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-12-07
• Subjects: Alzheimer's disease -- Periodicals; Alzheimer Disease -- Periodicals; Dementia -- Periodicals; Démence; Maladie d'Alzheimer; Périodique électronique (Descripteur de forme); Ressource Internet (Descripteur de forme); 616.83
• DOI: 10.1002/alz.039206
• Languages: English
• ISSNs: 1552-5260

Abstract

Abstract: Background: It has been reported that stroke promotes the deposition of Aβ in the brain, which may be associated with post‐stroke cognitive impairment. Considering plasma Aβ is closely related to Aβ deposition in the brain, in the present study, we investigated the relationship between plasma Aβ levels and cognitive dysfunction after stroke. Method: A total of 138 patients of acute ischemic stroke (within 2 weeks of onset) who were hospitalized in the Neurology Department of the first affiliated hospital of Xi 'an Jiaotong University and 138 age‐matched controls were enrolled between Jan1, 2017, and Oct 30, 2018. The Informant Questionnaire on Cognitive Decline in the Elderly (IQCODE) was used to assess the pre‐existing cognitive status. A validated Chinese version of the Mini‐Mental State Examination was used to assess cognition. Fasting venous blood was taken in the morning and plasma Aβ42, Aβ40, sLRP1, and sRAGE levels were measured by ELISA. The relationship between plasma Aβ and cognitive impairment was analyzed using logistic regression analysis. Result: Among acute ischemic stroke 138 patients, 37 patients met the criteria for cognitive impairment, the incidence of cognitive impairment was 26.81%. Plasma Aβ42, sLRP‐1 and Aβ42 /Aβ40 ratio were decreased in the acute ischemic stroke group. While plasma Aβ40, Aβ42, sLRP‐1, sRAGE levels and Aβ42 /Aβ40 ratio had no significant difference between cognitive impairment group and the normal cognitive group. The multivariate analysis showed that plasma Aβ40, Aβ42, sLRP‐1, sRAGE levels and Aβ42 /Aβ40 ratio were not associated with post‐stroke cognitive impairment. Conclusion: Plasma Aβ42, sLRP‐1 and Aβ42 /Aβ40 ratio were decreased after acute ischemic stroke, however, the levels of plasma Aβ and transports were not associated with post‐stroke cognitive impairment.