The Global Cognition, Frontal Lobe Dysfunction and Behavior Changes in Chinese Patients with Multiple System Atrophy

Area of Science:

• Neurology
• Neuroscience
• Cognitive Science

Background:

• Limited studies exist on cognitive function in multiple system atrophy (MSA) patients.
• Cognitive impairment is increasingly recognized as a significant feature of neurodegenerative diseases.

Purpose of the Study:

• To investigate the prevalence and patterns of cognitive impairment in Chinese patients with multiple system atrophy (MSA).
• To identify factors associated with cognitive deficits in MSA patients.

Main Methods:

• 110 MSA patients and 55 healthy controls were assessed using Addenbrooke's Cognitive Examination-Revised (ACE-R), Frontal Assessment Battery (FAB), Frontal Behavioral Inventory (FBI), and Unified MSA Rating Scale (UMSARS).
• Statistical analyses, including binary logistic regression, were employed to determine predictors of cognitive dysfunction.

Main Results:

• 32.7% of MSA patients exhibited global cognitive deficits, with verbal fluency and visuospatial abilities most affected.
• 41.6% showed frontal lobe dysfunction, primarily impacting inhibitory control.
• Low education (<9 years) and severe motor symptoms (UMSARS ≥40) were significant predictors of both global cognitive deficits and frontal lobe dysfunction.

Conclusions:

• Cognitive impairment is common in Chinese MSA patients, manifesting as global deficits and frontal lobe dysfunction.
• Factors such as low education level and disease severity are associated with cognitive impairment in MSA.
• Cognitive assessment should be considered integral to MSA diagnosis, not an exclusion criterion.