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Chinese Journal of Experimental and Clinical Infectious Diseases(Electronic Edition) ›› 2018, Vol. 12 ›› Issue (03): 292-295. doi: 10.3877/cma.j.issn.1674-1358.2018.03.018

Special Issue:

• Clinical Research Article • Previous Articles     Next Articles

Lemple-Zie complexity in patients with general paresis of insane and asymptomatic neurosyphilis

Meijuan Jiang1, Wurong Li1, Wenqing Wu1,(), Yuming Huang1, Dongmei Xu1, Sumei Wang1, Kaiyu Qin1, Xiayang Ma1   

  1. 1. Department of Neurology, Beijing Ditan Hospital, Capital Medical University, Beijing 00015, China
  • Received:2017-12-27 Online:2018-06-15 Published:2018-06-15
  • Contact: Wenqing Wu
  • About author:
    Corresponding author: Wu Wenqing, Email:

Abstract:

Objective

To analyze the characteristics of Lemple-Zie complexity (LZC) in patients with general paresis of insane (GPI) and asymptomatic neurosyphilis (AN) using the nonlinear dynamic method.

Methods

Electroencephalogram (EEG) of 42 GPI patients and 43 AN patients with eyes closed in rest state in Beijing Ditan Hospital, Capital Medical University from July 2015 to October 2017 were recorded. The EEG date of each lead was selected for LZC analysis by Matlab 7.0 software, and the changes of LZC values between the two groups were compared.

Results

The LZC values in all leads, bilateral hemispheres and the whole brain in the GPI group were lower than those in AN group, in which the LZC values of bilateral frontal areas (F3, F4), bilateral temporal areas (T5, T6) and the right central area (C4) decreased, with significant differences (F3: 0.417 ± 0.116 vs. 0.468 ± 0.128, t = 2.792, P = 0.043; F4: 0.413 ± 0.115 vs. 0.463 ± 0.130, t = 2.753, P = 0.045; T5: 0.398 ± 0.117 vs. 0.457 ± 0.128, t = 2.711, P = 0.047; T6: 0.395 ± 0.115 vs. 0.456 ± 0.128, t = 2.766, P = 0.044; C4: 0.405 ± 0.120 vs. 0.462 ± 0.125, t = 3.017, P = 0.031).

Conclusions

LZC value could be taken as a more sensitive index of changes of the cognitive function. With the decline of the cognitive function, the LZC values of frontal and temporal areas of the patients with GPI may decrease in the same direction, which may provide a valuable forecasting basis for early diagnosis and prognosis assessment of GPI.

Key words: Neurosyphilis, General paresis of insane, Asymptomatic neurosyphilis, Electroencephalogram, Lemple-Zie complexity

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