Ratio of Aβ42/P-tau181p in CSF is associated with aberrant default mode network in AD.

Ratio of Aβ42/P-tau181p in CSF is associated with aberrant default mode network in AD.
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CSF中Aβ42/P-TAU181P的比率与AD中的异常默认模式网络有关。

DOI:
10.1038/srep01339
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发表时间:
2013
期刊:
影响因子:
4.6
通讯作者:
Wahlund LO
Wahlund LO
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Li X;Li TQ;Andreasen N;Wiberg MK;Westman E;Wahlund LO

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默认模式网络(DMN)与阿尔茨海默病(AD)特别相关,因为其结构容易受到淀粉样蛋白沉积的影响。脑脊液 (CSF) 中 β-淀粉样蛋白 1-42 (Aβ42) 水平降低、总 tau 蛋白 (T-tau) 和苏氨酸 181 位磷酸化 tau (P-tau181p) 水平升高,已被确定为 AD 诊断和预后的有效生物标志物。然而,CSF 生物标志物与 DMN 变化之间的关系仍不清楚。在本研究中,我们研究了 DMN 内的功能连接与 CSF 中 Aβ42/P-tau181p 比率之间的相关性。我们发现 Aβ42/P-tau181p 的比率与左侧楔前叶/楔叶 DMN 内的功能连接呈中度正相关。这一发现表明 DMN 内的大脑功能连接受到 AD 早期病理变化的影响。这可能有助于更好地了解 AD 病理进展并改善 AD 诊断。
The default mode network (DMN) is particularly relevant to Alzheimer's disease (AD) since its structures are vulnerable to deposition of amyloid. Decreased levels of β-amyloid1-42 (Aβ42) and increased total tau protein (T-tau) and tau phosphorylated at position threonine 181 (P-tau181p) in cerebrospinal fluid (CSF) have been established as valid biomarkers for the diagnosis and prognosis of AD. However, the relationship between CSF biomarkers and change in the DMN is still unknown. In this study we investigated the correlation between the functional connectivity within the DMN and the ratio of Aβ42/P-tau181p in the CSF. We found that the ratio of Aβ42/P-tau181p was moderately positively correlated with the functional connectivity within the DMN in the left precuneus/cuneus. This finding implicates that the brain functional connectivity within DMN is affected by pathological changes at early stage in AD. This may provide a better understanding of AD pathology progression and improve AD diagnosis.
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