期刊
MULTIPLE SCLEROSIS AND RELATED DISORDERS
卷 45, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.msard.2020.102388
关键词
Multiple sclerosis; Corpus callosum; Brain atrophy; Corpus callosum index; Fractional anisotropy
资金
- Bayer Schering Pharma
- Biogen Idec
- Eisai Inc.
- Mitsubishi Tanabe Pharma Corporation
- Novartis Pharma
- Astellas Pharma Inc.
- Takeda Pharmaceutical Company Limited
- Asahi Kasei Medical Co.
- Daiichi Sankyo
- Nihon Pharmaceutical
- Ministry of Education, Culture, Sports, Science and Technology of Japan [22229008, 26293205]
- Ministry of Health, Welfare and Labor of Japan
- LSI Medience
- JSPS KAKENHI [17K09772]
Objectives: Recent studies suggest that parameters of the corpus callosum (CC), such as the CC index (CCI) and fractional anisotropy (FA) of the CC, may be related to the degree of brain volume loss (BVL) in MS patients; however, cutoff values that determine the degree of BVL have not been set. Methods: Seventy-five MS patients and 21 healthy controls (HCs) underwent volumetric MRI examinations. MS patients were also evaluated for T2 lesion load, the CCI, and FA of the CC. Among the 75 MS patients, 20 had undergone cognitive assessments with the Symbol Digit Modalities Test (SDMT). After 75 MS patients were categorized into mild, moderate, or severe BVL subgroups according to our previous report, we performed receiver operating characteristic analysis to determine the cutoff values of CCI and FA, categorizing the MS patients into the three subgroups. Results: The volume of the CC was significantly reduced in MS patients compared to that in HCs. The CCI and FA were significantly associated with EDSS, disease duration, clinical phenotype, T2-lesion load, and whole brain volume. The FA was significantly correlated with the SDMT score. We identified optimal cutoff values for the CCI and FA of 0.32 (85% sensitivity, 92% specificity) and 0.39 (100% sensitivity, 92% specificity), respectively, which discriminated the severe BVL group from others, and 0.385 (84% sensitivity, 74% specificity) and 0.45 (81% sensitivity, 89% specificity), respectively, which discriminated the mild BVL group from others. Conclusion: The CCI and FA cutoff values may be useful for evaluating the degree of MS brain atrophy in clinical practice.
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