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Cerebrospinal Fluid YKL-40 and Neurogranin in Familial Alzheimer's Disease: A Pilot Study.
Journal of Alzheimer’s Disease ( IF 3.4 ) Pub Date : 2020-01-01 , DOI: 10.3233/jad-191261
Steinunn Thordardottir 1, 2 , Ove Almkvist 3 , Charlotte Johansson 1, 2 , Henrik Zetterberg 4, 5, 6, 7 , Kaj Blennow 4, 7 , Caroline Graff 1, 2
Affiliation  

BACKGROUND YKL-40 and neurogranin are promising additional cerebrospinal fluid (CSF) biomarkers for Alzheimer's disease (AD) which reflect different underlying disease mechanisms. OBJECTIVE To compare the levels of CSF YKL-40 and neurogranin between asymptomatic carriers of familial AD (FAD) mutations (MC) and non-carriers (NC) from the same families. Another objective was to assess changes in YKL-40 and neurogranin, from the presymptomatic to clinical phase of FAD. METHODS YKL-40 and neurogranin, as well as Aβ42, total tau-protein, and phospho-tau, were measured in the CSF of 14 individuals carrying one of three FAD mutations, APPswe (p.KM670/671NL), APParc (p.E693G), and PSEN1 (p.H163Y), as well as in 17 NC from the same families. Five of the MC developed mild cognitive impairment (MCI) during follow-up. RESULTS In this pilot study, there was no difference in either CSF YKL-40 or neurogranin when comparing the presymptomatic MC to the NC. YKL-40 correlated positively with expected years to symptom onset and to age in both the MC and the NC, while neurogranin had no correlation to either variable in either of the groups. A subgroup of the participants underwent more than one CSF sampling in which half of the MC developed MCI during follow-up. The longitudinal data showed an increase in YKL-40 levels in the MC as the expected symptom onset approached. Neurogranin remained stable over time in both the MC and the NC. CONCLUSION These findings support a positive correlation between progression from presymptomatic to symptomatic AD and levels of CSF YKL-40, but not neurogranin.

中文翻译:

家族性阿尔茨海默氏病中的脑脊髓液YKL-40和神经颗粒素:一项初步研究。

背景技术YKL-40和神经颗粒蛋白有望用于阿尔茨海默氏病(AD)的其他脑脊液(CSF)生物标志物,其反映出不同的潜在疾病机制。目的比较无症状家族性AD(FAD)突变(MC)和非家族性(NC)无症状携带者之间的CSF YKL-40和神经颗粒素水平。另一个目标是评估从症状发生前到FAD临床阶段的YKL-40和神经颗粒素的变化。方法在14名携带三种FAD突变之一的人(分别为APPswe(p.KM670 / 671NL),APParc(p.p. 254))的CSF中测量了YKL-40和神经颗粒素以及Aβ42,总tau蛋白和磷酸化tau蛋白。 E693G)和PSEN1(第H163Y页),以及来自相同家族的17个NC。5名MC在随访期间发生了轻度认知障碍(MCI)。结果在这项初步研究中,比较症状前的MC和NC,CSF YKL-40或神经颗粒蛋白无差异。在MC和NC中,YKL-40与症状发作的预期年限和年龄均呈正相关,而在两组中神经颗粒素与任一变量均无相关性。一小组参与者进行了一次以上的脑脊液采样,其中一半的MC在随访期间发展为MCI。纵向数据显示,随着预期症状发作的临近,MC中YKL-40水平增加。随着时间的推移,神经颗粒素在MC和NC中均保持稳定。结论这些发现支持从症状前到症状性AD的进展与脑脊液YKL-40水平的正相关,而与神经颗粒蛋白没有关系。在MC和NC中,YKL-40与症状发作的预期年限和年龄均呈正相关,而在两组中神经颗粒素与任一变量均无相关性。一小组参与者进行了一次以上的脑脊液采样,其中一半的MC在随访期间发展为MCI。纵向数据显示,随着预期症状发作的临近,MC中YKL-40水平增加。随着时间的推移,神经颗粒素在MC和NC中均保持稳定。结论这些发现支持从症状前到症状性AD的进展与脑脊液YKL-40水平的正相关,而与神经颗粒蛋白没有关系。在MC和NC中,YKL-40与症状发作的预期年限和年龄均呈正相关,而在两组中神经颗粒素与任一变量均无相关性。一小组参与者进行了一次以上的脑脊液采样,其中一半的MC在随访期间发展为MCI。纵向数据显示,随着预期症状发作的临近,MC中YKL-40水平增加。随着时间的推移,神经颗粒素在MC和NC中均保持稳定。结论这些发现支持从症状前到症状性AD的进展与脑脊液YKL-40水平的正相关,而与神经颗粒蛋白没有关系。一小组参与者进行了一次以上的脑脊液采样,其中一半的MC在随访期间发展为MCI。纵向数据显示,随着预期症状发作的临近,MC中YKL-40水平增加。随着时间的推移,神经颗粒素在MC和NC中均保持稳定。结论这些发现支持从症状前到症状性AD的进展与脑脊液YKL-40水平的正相关,而与神经颗粒蛋白没有关系。一小组参与者进行了一次以上的脑脊液采样,其中一半的MC在随访期间发展为MCI。纵向数据显示,随着预期症状发作的临近,MC中YKL-40水平增加。随着时间的推移,神经颗粒素在MC和NC中均保持稳定。结论这些发现支持从症状前到症状性AD的进展与脑脊液YKL-40水平的正相关,而与神经颗粒蛋白没有关系。
更新日期:2020-06-17
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