4.3 Article

An increased neutrophil-lymphocyte ratio in Alzheimer's disease is a function of age and is weakly correlated with neocortical amyloid accumulation

期刊

JOURNAL OF NEUROIMMUNOLOGY
卷 273, 期 1-2, 页码 65-71

出版社

ELSEVIER
DOI: 10.1016/j.jneuroim.2014.05.005

关键词

Haematology; Neuroinflammation; Alzheimer's disease; Neocortical amyloid burden; Diagnosis

资金

  1. Science Industry and Endowment Fund
  2. National Health and Medical Research Council (NH&MRC) via the Dementia Collaborative Research Centres programme (DCRC2)
  3. Commonwealth Scientific and Industrial Research Organisation (CSIRO)
  4. Victorian Government's Operational Infrastructure Support programme
  5. Pfizer International

向作者/读者索取更多资源

Inflammation is a hallmark of Alzheimer's disease (AD). Whether directly involved in the pathogenesis, or a downstream consequence of neuronal death, the blood neutrophil-lymphocyte ratio (NLR) is reported to be a putative, non-invasive peripheral biomarker for AD. The aim of this study was to re-evaluate the diagnostic utility of longitudinal measures of the NLR. The NLR was stable across all time-points and weakly correlated with neocortical amyloid burden (R = 0.21 at baseline, 0.27 at 18 months, 0.20 at 36 months and 0.10 at 54 months). Cross-sectionally, the NLR was significantly elevated in AD participants as compared to HC participants at baseline (p < 0.0001), 18 months (p < 0.0001), 36 months (p = 0.002) and at 54 months (p = 0.007), however only prior to adjustment for age, sex and APOEs4 allele status (p > 0.05 at all timepoints except for 18 months; p <0.0001). Longitudinally, the NLR was not significantly different between HC and AD participants (p > 0.05) adjusted for age, sex and APOEs4 allele status. Comparing the NLR between cognitive transition groups over time (transition towards an AD type dementia), there was no significant difference in the NLR levels between those participants, who did not transition and those participants who did transition, or those in the stable AD group after adjusting for age, sex and APOE epsilon 4 allele status (p > 0.05). Despite inflammation being a hallmark in AD and previous reports showing that the NLR can discriminate HC from AD patients, our results suggest that the sensitivity of the NLR itself is not robust enough for diagnostic utility. We identified significant relationships cross sectionally (p <0.05 at baseline, 18 months and 36 months) between the NLR and neocortical amyloid burden, but this relationship was lost after longitudinal analyses (p > 0.5). The NLR also had limited association with cognitive decline, although in our cohort, the number of participants transitioning was relatively small. In conclusion, the NLR may reflect AD-related inflammatory processes in the periphery, but age and sex are dominant covariates which need to be controlled for in population-based screening. (C) 2014 Elsevier B.V. All rights reserved.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.3
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据