期刊
MULTIPLE SCLEROSIS AND RELATED DISORDERS
卷 63, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.msard.2022.103929
关键词
Multiple sclerosis; Cognitive deficits; Apathy; Depression; Behavioural disorders; Cognitive dysfunctions
In this longitudinal study, researchers found that apathy is an early marker of cognitive decline in multiple sclerosis patients, while depression and education level are not associated with cognitive decline.
Background: Cognitive dysfunctions are highly prevalent in multiple sclerosis (MS) and negatively impact occupational and social functioning. Objective: In the present longitudinal study, we aimed at modeling cognitive changes and at assessing whether apathy could be a predictor of cognitive decline in MS. Methods: We assessed 67 people with MS at two-time points (baseline, T0; 4-year follow-up, T1), by means of several clinical, behavioural, and cognitive measures. We used a delta approach to measure cognitive decline during the follow-up period. We applied a mixed factorial design and a linear regression model to explore factors associated with cognitive changes over time. Results: A higher level of apathy at baseline predicted the progressive cognitive decline at follow-up, whereas a higher level of depression did not. Among demographic and clinical characteristics, only low education level was significantly associated with cognitive decline over time. Interestingly, participants with persistent apathy (diagnosis of apathy at T0 and T1, A+A+) and those who developed apathy (A-A+) showed poorer inhibitory control and a larger decline in executive functioning during the 4-year follow-up than participants who had never received the diagnosis of apathy (A-A-). Conclusion: Apathy represents an early marker of cognitive decline in MS. These findings have important clinical and prognostic implications.
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