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[Hyperlipidemia in uremic patients in dialysis]
Insights
Hemodialysis patients with hyperlipidemia show increased atherosclerosis risk due to abnormal lipid profiles, including low high-density lipoprotein-cholesterol (HDL-C) and high apoprotein B (apo B). Normolipidemic patients on hemodialysis have a lower risk, irrespective of cholesterol levels.
Area of Science:
- Cardiovascular Medicine
- Nephrology
- Clinical Chemistry
Context:
- Hemodialysis patients often exhibit dyslipidemia, a known risk factor for cardiovascular disease.
- Understanding lipid abnormalities in this population is crucial for managing atherosclerosis risk.
Purpose:
- To compare serum lipid and apoprotein concentrations in hemodialysis patients versus normal controls.
- To identify specific lipid-related risk factors for atherosclerosis in hemodialysis patients.
Summary:
- Serum cholesterol, triglycerides, high-density lipoprotein-cholesterol (HDL-C), apoprotein A (apo A), and apoprotein B (apo B) were measured.
- Hyperlipidemia was found in 59.4% of hemodialysis patients.
- All patients had low HDL-C; hyperlipidemic patients exhibited elevated apo B and a low apo A/apo B ratio, indicating increased atherosclerosis risk.
Impact:
- Hyperlipidemic hemodialysis patients face substantial atherosclerosis risk due to specific lipid abnormalities.
- Normolipidemic hemodialysis patients, despite potential cholesterol variations, show a lower risk profile.
- Findings aid in risk stratification and targeted interventions for cardiovascular health in hemodialysis populations.
Abstract:
Serum concentrations of cholesterol, triglycerides, high density lipoprotein-cholesterol (HDL-C), apoproteins (apo) A and B were compared in 36 hemodialysis patients and in 20 normal controls. Hyperlipidemia was present in 22 patients (59.4%); 15 of them had simple hypertriglyceridemia and 7 had combined hyperlipidemia (i.e., hypertriglyceridemia and hypercholesterolemia). All hemodialysis patients, whether normo- or hyperlipidemic, had normal apo A and low HDL-C serum concentrations. Positive risk factors for atherosclerosis other than low HDL-C (high serum apo B concentration and low apo A/apo B ratio) were present in hyperlipidemic patients only, with no difference between those with simple hypertriglyceridemia and combined hyperlipidemia. These results suggest that the risk for atherosclerosis related to lipid abnormalities may be considered as substantial in hyperlipidemic hemodialysis patients, but not in normolipidemic ones, regardless of the cholesterolemic values.