Predictive Value of Cerebrospinal Fluid Biomarkers for Tap Test Responsiveness in Patients With Suspected Idiopathic Normal Pressure Hydrocephalus

Frontiers in Aging Neuroscience

Jinwu Zhu¹  Yubing Wu²  Xing Liu²  Yan Xing²  Chenhui Yang²  Jie Sun²  Jie Zhang²  Shuangyan Kong²  Zhe Shi²  Rongrong Hua²  Ying Zhou²  Chunyan Liu²  Jian Li²  Lijuan Liu²  Nan Liu²  Qiong Yang²  Lidong Wang²  Yanfeng Li³ 

[1] Aviation Medical Engineering Center of Aviation General Hospital, Beijing, China;Department of Neurology, Aviation General Hospital, Beijing, China;Department of Neurology, Peking Union Medical College Hospital, Beijing, China;

关键词: idiopathic normal pressure hydrocephalus;    cerebrospinal fluid biomarkers;    tap test;    tau;    Aβ;   

DOI  :  10.3389/fnagi.2021.665878

来源: DOAJ

【 摘 要 】

Background: The value of cerebrospinal fluid (CSF) biomarkers for assessing idiopathic normal pressure hydrocephalus (iNPH) must be determined. This prospective study aimed to reveal the correlation between CSF biomarkers and clinical symptoms of iNPH and the predictive value of these biomarkers for tap test responsiveness.Methods: Thirty-nine patients with suspected iNPH were recruited, contributed qualified CSF, and underwent a tap test and unified pre- and post-test evaluations of the neurological function.Results: The analysis of biomarkers from the patients’ CSF showed decreased levels of tau and its phosphorylated form, especially in the tap test (+) group. The responsiveness of the tap test was also related to the number of combined symptoms (p < 0.01), and a correlation was found between the end pressure or pressure difference in CSF and tap test responsiveness (p < 0.05). The results of the binary logistic regression analysis showed that P (tap test responsiveness) = 1/1 + e∧ − (−5.505 + 55.314 * ratio of p/T-tau − 1.586 * numbers of combined symptoms). The combined indicators (−5.505 + 0.553 * percentage of p/T-tau − 1.586 * numbers of combined symptoms) resulted in the highest sensitivity and specificity of 94.12% and 72.73%, respectively.Conclusions: CSF biomarkers may be assessed to judge tap test responsiveness, which is beneficial for the feasibility of a clinical application.

【 授权许可】

Unknown