Abstract
BackgroundSkeletal muscle wasting is likely to play an important role in the Huntington's disease (HD) pathogenesis. Our aim was to analyze the body composition, and specifically fat-free mass (FFM), as an indirect marker of skeletal muscle in patients with HD, and its association with HD severity and energy balance. MethodsCross-sectional, case–control study. Body composition was analyzed using bioelectrical impedance. Information was collected as regards of the anthropometrics, disease severity [Unified Huntington Disease Rating (UHDRS) and Total functional capacity (TFC) scores], CAG repeats, protein catabolism, energy intake and energy expenditure. ResultsTwenty two patients with HD [mean age 50.3±15.6, mean UHDRS of 27.9±23.7, median TFC of 11 (IQR: 7; 13); median body mass index 23.6 (IQR: 26.8; 22.5)], and 18 controls were included. Both groups were similar in terms of age, gender, body mass index, body composition, physical activity level, and protein catabolism. FFM was correlated with energy intake (r=0.73, p<0.001), resting energy expenditure (r=0.64, p=0.001) and physical activity (r=0.54, p=0.003), but not with CAG repeats, or HD severity. ConclusionsOur results do not support the presence of significant muscle wasting in patients with early-moderate Huntington's disease. However, to prevent muscle wasting in HD, dietary strategies, in addition to physical exercise, should be further investigated.
Published Version
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