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Repeater F-waves in amyotrophic lateral sclerosis: electrophysiologic indicators of upper or lower motor neuron involvement?
Clinical Neurophysiology ( IF 4.7 ) Pub Date : 2020-01-01 , DOI: 10.1016/j.clinph.2019.09.030
Emel Oguz Akarsu 1 , Nermin Gorkem Sirin 1 , Elif Kocasoy Orhan 1 , Bahar Erbas 2 , Hava Ozlem Dede 1 , Mehmet Baris Baslo 1 , Halil Atilla Idrisoglu 1 , Ali Emre Oge 1
Affiliation  

OBJECTIVE To extract insight about the mechanism of repeater F-waves (Frep) by exploring their correlation with electrophysiologic markers of upper and lower motor neuron dysfunction in amyotrophic lateral sclerosis (ALS). METHODS The correlations of Frep parameters with clinical scores and the results of neurophysiological index (NI), MScanfit MUNE, F/M amplitude ratio (F/M%), single and paired-pulse transcranial magnetic stimulation (TMS), and triple stimulation technique (TST) studies, recorded from abductor digiti minimi (ADM) and abductor pollicis brevis (APB) muscles of 35 patients with ALS were investigated. RESULTS Frep parameters were correlated with NI and MScanfit MUNE in ADM muscle and F/M% in both muscles. None of the Frep parameters were correlated with clinical scores or TST and TMS measures. While the CMAP amplitudes were similar in the two recording muscles, there was a more pronounced decrease of F-wave persistence in APB, probably heralding the subsequent split hand phenomenon. CONCLUSION Our findings suggest that the presence and density of Freps are primarily related to the degree of lower motor neuron loss and show no correlation with any of the relatively extensive set of parameters for upper motor neuron dysfunction. SIGNIFICANCE Freps are primarily related to lower motor neuron loss in ALS.

中文翻译:

肌萎缩侧索硬化中的中继器 F 波:上或下运动神经元受累的电生理指标?

目的 通过探索转发器 F 波 (Frep) 与肌萎缩侧索硬化 (ALS) 上下运动神经元功能障碍电生理标志物的相关性,深入了解其机制。方法 Frep参数与临床评分及神经生理指数(NI)、MScanfit MUNE、F/M振幅比(F/M%)、单脉冲和双脉冲经颅磁刺激(TMS)、三重刺激技术结果的相关性(TST) 研究,从 35 名 ALS 患者的小指外展肌 (ADM) 和拇短外展肌 (APB) 肌肉中记录。结果 Frep 参数与 ADM 肌肉中的 NI 和 MScanfit MUNE 以及两种肌肉中的 F/M% 相关。没有一个 Frep 参数与临床评分或 TST 和 TMS 测量相关。虽然两个记录肌肉的 CMAP 幅度相似,但 APB 中 F 波持久性的降低更为明显,这可能预示着随后的分手现象。结论 我们的研究结果表明,Frep 的存在和密度主要与下运动神经元丢失的程度有关,并且与任何相对广泛的上运动神经元功能障碍参数集无关。意义 Freps 主要与 ALS 中的下运动神经元丢失有关。结论 我们的研究结果表明,Frep 的存在和密度主要与下运动神经元丢失的程度有关,并且与任何相对广泛的上运动神经元功能障碍参数集无关。意义 Freps 主要与 ALS 中的下运动神经元丢失有关。结论 我们的研究结果表明,Frep 的存在和密度主要与下运动神经元丢失的程度有关,并且与任何相对广泛的上运动神经元功能障碍参数集无关。意义 Freps 主要与 ALS 中的下运动神经元丢失有关。
更新日期:2020-01-01
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