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- Title
Temporalis Muscle Thickness as an Indicator of Sarcopenia Is Associated With Long-term Motor Outcomes in Parkinson's Disease.
- Authors
Chung, Seok Jong; Kim, Yun Joong; Yoo, Han Soo; Jung, Jin Ho; Baik, KyoungWon; Lee, Hye Sun; Lee, Yang Hyun; Hong, Ji-Man; Sohn, Young H; Lee, Phil Hyu
- Abstract
<bold>Background: </bold>To investigate the relationship between temporalis muscle thickness (TMT) at baseline as a surrogate marker for sarcopenia and long-term motor outcomes in patients with Parkinson's disease (PD).<bold>Methods: </bold>We enrolled 249 patients with drug-naïve early-stage PD (119 males and 130 females, follow-up > 3 years). Baseline TMT of each patient was measured on the axial plane of T1-weighted images. The association between baseline TMT and long-term motor outcomes in PD was assessed using Cox regression models for levodopa-induced dyskinesia, wearing-off, and freezing of gait and a linear mixed model for the longitudinal increases in levodopa-equivalent dose per body weight over time. Statistical analyses were performed separately for sex if an interaction effect between TMT and sex was assumed.<bold>Results: </bold>TMT differed substantially between the sexes, and male PD patients had higher TMT (6.69 ± 1.39 mm) than female PD patients (5.64 ± 1.34 mm, p < .001). Cox regression models demonstrated that baseline TMT was not associated with the risk of developing levodopa-induced dyskinesia, wearing-off, or freezing of gait during the follow-up period. The linear mixed model was applied separately for sex and demonstrated that higher TMT at baseline was associated with slower increases in levodopa-equivalent dose per body weight in male PD patients, but not in female PD patients.<bold>Conclusions: </bold>This study demonstrated that baseline TMT could be an indicator of the longitudinal requirement for dopaminergic medications in male patients with PD, suggesting that sarcopenia may have a detrimental effect on disease progression in PD in a sex-specific manner.
- Subjects
TEMPORALIS muscle; PARKINSON'S disease; SARCOPENIA; GAIT disorders; SUBTHALAMIC nucleus; TREATMENT effectiveness; SKELETAL muscle physiology; DRUG therapy for Parkinson's disease; RESEARCH; NEUROLOGICAL disorders; BODY weight; ANTIPARKINSONIAN agents; RESEARCH methodology; MOVEMENT disorders; DOPA; EVALUATION research; COMPARATIVE studies; RESEARCH funding; DISEASE complications
- Publication
Journals of Gerontology Series A: Biological Sciences & Medical Sciences, 2021, Vol 76, Issue 12, p2242
- ISSN
1079-5006
- Publication type
journal article
- DOI
10.1093/gerona/glab082