Association Between Body Mass Index and Disease Severity in Chinese Spinocerebellar Ataxia Type 3 Patients
Cerebellum (London, England)(2018)
摘要
Spinocerebellar ataxia type 3 (SCA3), the most common subtype of SCA worldwide, is caused by mutation of CAG repeats expansion in ATXN3 . Body mass index (BMI) is an important modulatory factor in the progression of neurodegenerative disorders such as Huntington disease and amyotrophic lateral sclerosis. However, its relevance in SCA3 is not well understood. In this study, BMI was investigated in 134 molecularly confirmed SCA3 patients and 136 healthy controls from China. The multivariable linear regression models were performed to establish the putative risk factors for BMI, and whether BMI could affect the severity of ataxia. We found that BMI was significantly lower in the case group than that in the control group. The age at onset (positive correlation) and severity of ataxia (negative correlation) were the risk factors affecting BMI. Conversely, BMI along with the disease duration, the age at onset, and the numbers of CAG repeats could also have influence on the severity of ataxia. In conclusion, SCA3 patients had lower BMI than matched controls and BMI is a predictor of disease progression in SCA3. Nutritional intervention to promote weight gain could be a promising strategy to impede SCA3 progression.
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关键词
Age at onset,Body mass index,Machado-Joseph disease,Spinocerebellar ataxia type 3
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