4.2 Article

Temporal muscle thickness and survival in patients with amyotrophic lateral sclerosis

期刊

NEUROLOGICAL RESEARCH
卷 44, 期 11, 页码 1006-1010

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TAYLOR & FRANCIS LTD
DOI: 10.1080/01616412.2022.2096004

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Temporal muscle thickness (TMT); MRI biomarker; amyotrophic lateral sclerosis (ALS); muscle loss; sarcopenia; survival

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Temporal muscle thickness (TMT) has shown potential prognostic relevance in patients with Amyotrophic Lateral Sclerosis (ALS), correlating with functional rating and compound motor action potential. TMT may serve as a promising surrogate biomarker for survival and functional status in ALS.
Temporal muscle thickness (TMT) is a new potential MRI biomarker, which has shown prognostic relevance in neuro-oncology. We aim at investigating the potential prognostic value of TMT in patients with Amyotrophic Lateral Sclerosis (ALS). We retrospectively evaluated 30 ALS patients, whose clinical, Magnetic Resonance Imaging (MRI) and Electrodiagnostic testing (EDX) data were available, in comparison to age-matched 30 healthy subjects. TMT calculated on T1-weighted MR images was significantly lower in ALS patients than in healthy subjects (p < 0.001), correlating with the ALS Functional Rating Scale (FRS) (p:0.018) and compound motor action potential (CMAP) (p:0.012) in the patients group. Multivariate analysis of overall survival (OS) showed that the only parameters that remained significant were TMT (p:0.002, OR 0.45, 95%vCI: 0.28-0.75) and ALS FRS-R (p:0.023, OR: 0.80, 95%CI: 0.67-0.92). TMT seems to be a promising surrogate biomarker of survival and functional status in ALS. Our data deserve further investigations in multicenter and prospective trials.

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