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Lp(a) lipoprotein in cerebrovascular disease and dementia
K Urakami1, T Mura, K Takahashi
1Division of Neurology, Institute of Neurological Sciences, Yonago, Japan.
Insights
Elevated lipoprotein(a) [Lp(a)] levels are linked to coronary heart disease. This study found higher Lp(a) in vascular dementia and large artery occlusion cerebral infarction, suggesting Lp(a) may indicate vascular contributions to cognitive impairment.
Area of Science:
- Cardiovascular Science
- Neurology
- Lipid Metabolism
Background:
- Lipoprotein(a) [Lp(a)] is an established independent risk factor for coronary heart disease (CHD).
- The role of Lp(a) in cerebrovascular disease (CVD) and dementia requires further elucidation.
- Understanding Lp(a) associations can aid in differentiating vascular dementia from other forms of cognitive decline.
Purpose of the Study:
- To investigate the association between Lp(a) levels and different types of cerebrovascular disease and dementia.
- To determine if Lp(a) can serve as a biomarker to distinguish vascular dementia (VD) from dementia of the Alzheimer type (DAT).
Main Methods:
- Comparative analysis of Lp(a) concentrations in patient cohorts with CHD, various types of cerebral infarction, VD, DAT, and age-matched controls.
- Statistical evaluation to identify significant differences in Lp(a) levels across disease categories.
Main Results:
- Significantly elevated Lp(a) concentrations were observed in patients with CHD, large artery occlusion cerebral infarction, and VD compared to controls.
- Lp(a) levels were not significantly elevated in small artery occlusion cerebral infarction, intracerebral hemorrhage, or DAT.
- A notable difference in Lp(a) levels was found between VD and DAT patients.
Conclusions:
- Lipoprotein(a) is implicated in the pathogenesis of vascular dementia (VD) and potentially other cerebrovascular diseases (CVD).
- Elevated Lp(a) may serve as a valuable indicator for distinguishing vascular dementia from Alzheimer's type dementia.
- Further research into Lp(a) as a therapeutic target for vascular cognitive impairment is warranted.
Abstract:
Lp(a) lipoprotein has been considered an independent risk factor in the development of coronary heart disease (CHD). We examined the role of Lp(a) in patients with cerebrovascular disease (CVD) and those with dementia. The Lp(a) concentration in patients with CHD, those with cerebral infarction due to a large artery occlusion and those with vascular dementia (VD) was significantly higher than that of age-matched control subjects. However, the Lp(a) concentration was not high in cerebral infarction due to a small artery occlusion, intracerebral hemorrhage and dementia of the Alzheimer type (DAT). The present results suggest that Lp(a) should cause VD as well as CVD, and that Lp(a) should be one of the indicators that distinguish VD from DAT.