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Serum lipids and high density lipoprotein cholesterol in peripheral vascular disease
Insights
Peripheral vascular diseases (PVD) are linked to higher triglyceride levels and a reduced high-density lipoprotein (HDL) ratio. This HDL ratio may be a better indicator of vascular risk than absolute HDL cholesterol levels.
Area of Science:
- Cardiology
- Vascular Medicine
- Biochemistry
Background:
- Peripheral vascular diseases (PVD) are associated with lipid abnormalities.
- Understanding the relationship between serum lipids, high-density lipoprotein (HDL) cholesterol, and PVD is crucial for risk assessment.
Purpose of the Study:
- To investigate serum lipid and HDL cholesterol concentrations in patients with PVD compared to controls.
- To determine if the HDL ratio is a more sensitive marker for vascular risk than absolute HDL cholesterol levels.
Main Methods:
- Serum lipid profiles, including triglycerides and cholesterol, were measured.
- High-density lipoprotein (HDL) cholesterol and HDL ratio were calculated.
- Patients with PVD (n=32) were compared to control subjects (n=38).
Main Results:
- Hypertriglyceridaemia was more prevalent in PVD patients.
- Mean serum triglyceride levels were significantly higher in male PVD patients.
- The HDL ratio was significantly reduced in both male and female PVD patients.
- Smoking was associated with lower HDL levels and ratios in controls.
Conclusions:
- The HDL ratio is a more sensitive indicator of vascular risk in PVD than absolute HDL cholesterol concentration.
- Elevated triglycerides and reduced HDL ratio are significant findings in PVD.
- Smoking may contribute to the reduced HDL ratio observed in PVD patients.
Abstract:
Serum lipids and high density lipoprotein (HDL) cholesterol concentrations were measured in 32 patients with peripheral vascular diseases (PVD) and 38 control subjects. Hypertriglyceridaemia (> 1.8 mmol/l) was significantly more common in PVD patients of both sexes than among controls but mean serum triglyceride levels were significantly higher only among males. Hypercholesterolaemia (> 7 mmol/l) was not more common in PVD patients nor did mean serum total cholesterol or HDL cholesterol levels differ significantly from control subjects. The HDL ratio, however, was significantly reduced in both males and females with PVD. These results suggest that expressing the amount of cholesterol carried in HDL in relative terms is a better index of vascular risk than is its absolute concentration. The HDL cholesterol level and the HDL ratio were both significantly lower in controls who smoked than in non-smokers; this may explain the reduced HDL ratio in PVD patients, most of whom were smokers.