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Updated: May 30, 2026

Network Analysis of the Default Mode Network Using Functional Connectivity MRI in Temporal Lobe Epilepsy
Published on: August 5, 2014
Correlation analysis of 25(OH)D with cognitive function in epilepsy patients: A cross-sectional study
Xin Du1, Bingbing Wang2, Li Shao1
1Department of Neurology, The Municipal Hospital Affiliated to Xuzhou Medical University, Xuzhou City, China.
Low vitamin D levels are linked to cognitive impairment in epilepsy patients. Serum 25(OH)D may serve as an early screening biomarker for this condition.
Area of Science:
- Neurology
- Biochemistry
- Clinical Diagnostics
Background:
- Epilepsy is frequently associated with cognitive dysfunction.
- Vitamin D deficiency is prevalent in various neurological conditions.
- The role of vitamin D in epilepsy-related cognitive impairment requires further elucidation.
Purpose of the Study:
- To investigate the association between serum 25(OH)D levels and cognitive function in epilepsy patients.
- To identify potential biomarkers for cognitive dysfunction in epilepsy.
Main Methods:
- A study involving 68 epilepsy patients and 30 healthy controls.
- Measurement of serum 25(OH)D levels and cognitive assessment using the Montreal Cognitive Assessment (MOCA) Scale.
- Comparison of cognitive scores and 25(OH)D levels between epileptic and healthy groups, and between cognitively normal and impaired epileptic subgroups.
Main Results:
- Epilepsy patients exhibited significantly lower 25(OH)D and MOCA scores compared to healthy controls.
- Patients with cognitive impairment had lower 25(OH)D and MOCA scores than those without.
- Serum 25(OH)D level was identified as an independent risk factor for cognitive impairment in epilepsy (OR=0.704, P=0.014).
- Receiver Operating Characteristic (ROC) curve analysis showed high diagnostic accuracy for serum 25(OH)D in identifying epilepsy with cognitive impairment (AUC=0.924).
Conclusions:
- Reduced vitamin D levels are significantly associated with cognitive impairment in epilepsy.
- Serum 25(OH)D may serve as a valuable biomarker for the early detection of cognitive impairment in epilepsy patients.
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