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Neurological Sciences

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01-01-2020 | Stroke | Original Article

Association of plasma trimethylamine-N-oxide levels with post-stroke cognitive impairment: a 1-year longitudinal study

Authors: Chen Zhu, Guangzong Li, Zhiyu Lv, Jing Li, Xiangming Wang, Jie Kang, Cheng Zhan

Published in: Neurological Sciences | Issue 1/2020

Abstract

Background and aims

Post-stroke cognitive impairment (PSCI) is a clinical condition arising from stroke and causes significant changes to memory, thinking, and behavior. Trimethylamine-N-oxide (TMAO), the metabolite produced by gut microbiota, has mechanistic relevance to atherosclerotic diseases. This study aimed to investigate whether an association existed between elevated plasma TMAO levels and PSCI.

Methods

Consecutive patients with acute ischemic stroke were prospectively enrolled during Jan. 2017 to Dec. 2017. TMAO concentration was measured within 24 h after admission. PSCI was assessed using the Mini-Mental State Examination (MMSE) score after 1 year and defined as MMSE score ≤ 26. Binary logistic regression analysis was used to determine the contribution of TMAO level in the prediction of PSCI.

Results

Of the 256 patients studied (age, 67.1 ± 11.0 years; male, 54.3%), 86 (33.6%) patients were diagnosed as PSCI. The mean TMAO level was 5.6 ± 2.4 μM, with quartile level as follows: < 3.9 μM (first quartile), 3.9–5.1 μM (second quartile), 5.2–7.4 μM (third quartile), and > 7.4 μM (fourth quartile). After controlling for potential confounders, multivariable logistic analysis showed that higher level of plasma TMAO was an independent predictor for cognitive impairment in post-stroke patients (the quartile 1 was used as reference, the quartile 4 odds ratio, 3.304; 95% confidence intervals, 1.335–8.178; P = 0.010).

Conclusions

This study demonstrated that increasing plasma level of TMAO may be associated with PSCI.

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Title: Association of plasma trimethylamine-N-oxide levels with post-stroke cognitive impairment: a 1-year longitudinal study
Authors: Chen Zhu
Guangzong Li
Zhiyu Lv
Jing Li
Xiangming Wang
Jie Kang
Cheng Zhan
Publication date: 01-01-2020
Publisher: Springer International Publishing
Keyword: Stroke
Published in: Neurological Sciences / Issue 1/2020
Print ISSN: 1590-1874
Electronic ISSN: 1590-3478
DOI: https://doi.org/10.1007/s10072-019-04040-w

At a glance: The STEP trials

Springer Medicine

Association of plasma trimethylamine-N-oxide levels with post-stroke cognitive impairment: a 1-year longitudinal study

Abstract

Background and aims

Methods

Results

Conclusions

At a glance: The STEP trials

Springer Medicine

Abstract

Background and aims

Methods

Results

Conclusions

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