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Plasma lipoproteins in cortical infarction versus transient ischaemic attacks: a case control study
M C Boutron1, M Giroud, P Gras
1Registre Bourguignon des Cancers Digestifs, Faculté de Médecine, Dijon, France.
Journal of Neurology
|January 1, 1993
Summary
Plasma lipid profiles, including cholesterol and lipoproteins, are altered in patients experiencing cortical infarction or transient ischemic attacks (TIA). These changes in lipid levels and lipoprotein distribution may indicate risk for these cerebrovascular events.
Area of Science:
- Cardiovascular Science
- Neurology
- Biochemistry
Background:
- Plasma lipid abnormalities are associated with ischemic stroke.
- Cortical infarction and transient ischemic attacks (TIA) are specific types of ischemic events with potentially distinct underlying mechanisms.
Purpose of the Study:
- To investigate the relationship between plasma lipid profiles and the risk of cortical infarction and TIA.
- To identify specific lipid and lipoprotein differences between patients with these conditions and matched controls.
Main Methods:
- Case-control study comparing 61 cortical infarction cases and 35 TIA cases with matched controls.
- Analysis of plasma lipids including total cholesterol, triglycerides, very-low-density lipoprotein (VLDL), low-density lipoprotein (LDL), high-density lipoprotein (HDL), and their associated apolipoproteins (Apo).
- Detailed examination of lipoprotein size distribution and LDL weight.
Main Results:
- Cortical infarction cases showed increased total cholesterol, VLDL, LDL, triglycerides, Apo B, LDL-Apo B, Apo-A1, and altered HDL size. Decreased HDL-ApoE and low-weight LDL were also observed.
- A novel finding was a decreased HDL-ApoE/total ApoE ratio in cortical infarction patients.
- TIA cases differed with low HDL levels and normal Apo-A1, HDL size distribution, and LDL characteristics.
Conclusions:
- Plasma lipid and lipoprotein alterations observed in cortical infarction patients align with known stroke risk factors.
- TIA exhibits distinct lipid profile changes, particularly concerning LDL distribution and weight, differentiating it from cortical infarction.
- These findings highlight specific lipid markers that may aid in differentiating and understanding the pathophysiology of cortical infarction and TIA.