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The relationship between carotid plaque composition and neurologic symptoms
The Journal of Surgical Research
|July 1, 1987
Summary
Carotid plaques with higher lipid and cholesterol content are more common in symptomatic patients, suggesting increased instability. Lipid-lowering treatments may be beneficial for asymptomatic patients with such plaques.
Area of Science:
- Vascular Biology
- Biochemistry
- Medical Diagnostics
Background:
- Carotid plaque composition influences stability and embolization risk.
- Increased lipid concentration is a key factor in plaque vulnerability.
Purpose of the Study:
- To investigate the relationship between carotid plaque composition and clinical symptoms.
- To determine if lipid content and collagen characteristics correlate with plaque instability.
Main Methods:
- Prospective analysis of 35 carotid bifurcation plaques from 31 patients.
- Quantification of plaque total lipid, cholesterol, collagen (pepsin-soluble and insoluble), and Ca2+.
- Analysis of preoperative serum lipid and plasma lipoprotein levels.
Main Results:
- Symptomatic plaques showed significantly higher total lipid and cholesterol content (P < 0.001).
- Increased pepsin-soluble collagen (PSC) was observed in symptomatic plaques (P < 0.05), indicating higher metabolic activity.
- Symptomatic patients had higher mean plasma low-density lipoprotein cholesterol levels (P < 0.05).
Conclusions:
- Higher lipid and cholesterol content in carotid plaques are associated with symptomatic disease.
- Increased pepsin-soluble collagen suggests heightened metabolic activity in unstable plaques.
- Consider plaque removal or lipid-lowering therapy for asymptomatic patients with lipid-rich plaques identified via ultrasound.