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  • Title: Motor unit number estimation in evaluating disease progression in patients with amyotrophic lateral sclerosis.
    Author: Ahn SW, Kim SH, Oh DH, Kim SM, Park KS, Hong YH, Kwon OS, Sung JJ, Lee KW.
    Journal: J Korean Med Sci; 2010 Sep; 25(9):1359-63. PubMed ID: 20808681.
    Abstract:
    We investigated the availability of motor unit number estimation (MUNE) as a quantitative method to assess the severity and clinical progression of amyotrophic lateral sclerosis (ALS). The 143 ALS patients were evaluated by statistical MUNE and the revised amyotrophic lateral sclerosis functional rating scale (ALSFRS-R). By using mean values of MUNE according to disease duration, regression equation between mean MUNE and disease duration was presented as a formula. The individual MUNE ratio was calculated by dividing individual MUNE value by mean MUNE value. All patients were classified into 2 groups (MUNE ratio <1 vs. MUNE ratio >or=1) according to the MUNE ratio. Comparison between the 2 groups revealed that the patients in MUNE ratio <1 group or MUNE ratio >or=1 group were respectively assigned to rapid progression or slow progression. We recommended informative mean values of MUNE and best regression equation in ALS patients according to disease duration. These values allow us to evaluate the severity and rapidity of progression in ALS.
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