Remnant cholesterol and mild cognitive impairment: A cross-sectional study

Area of Science:

• Cardiovascular Health
• Neurology
• Biochemistry

Background:

• Emerging evidence links elevated remnant cholesterol (RC) to various health conditions.
• Understanding the role of RC in cognitive health, particularly mild cognitive impairment (MCI), is crucial.

Purpose of the Study:

• To investigate the association between plasma RC levels and the incidence of MCI.
• To explore the relationship between plasma RC and specific cognitive domains in individuals with MCI.

Main Methods:

• A cross-sectional study involving 36 MCI patients and 38 healthy controls (HC).
• Plasma RC was calculated using the formula: Total Cholesterol - HDL-C - LDL-C.
• Cognitive function was assessed using MoCA, AVLT, DSST, TMT, and ROCF.

Main Results:

• MCI patients exhibited significantly higher plasma RC levels compared to HC (median difference: 8.13 mg/dl).
• Elevated plasma RC was positively associated with an increased risk of MCI (OR = 1.05).
• Higher RC levels correlated with impaired performance in DSST, ROCF-Long Delayed Recall, AVLT-Immediate Recall, and TMT-A.

Conclusions:

• Plasma remnant cholesterol is associated with mild cognitive impairment.
• Further large-scale longitudinal studies are warranted to confirm these findings and elucidate the causal relationship.