Related Experiment Videos
Cholesterol and heart disease: current concepts in pathogenesis and treatment
Insights
Lowering high cholesterol through diet and medication significantly reduces coronary heart disease (CHD) events. Effective treatments include diet therapy and hypolipidemic drugs, often used in combination for greater effect.
Area of Science:
- Cardiovascular Science
- Lipid Metabolism
Background:
- Hypercholesterolemia is a modifiable risk factor for coronary heart disease (CHD).
- CHD is a leading cause of death and disability among Black populations.
- Lipid profiles in Black populations may vary by socioeconomic status.
Purpose of the Study:
- To review plasma lipids and their association with coronary heart disease.
- To discuss the impact of socioeconomic factors on lipid profiles in Black individuals.
- To summarize findings on cholesterol-lowering interventions for CHD prevention.
Main Methods:
- Review of major plasma lipids and their relationship to CHD.
- Analysis of findings from the Lipid Research Clinics Coronary Primary Prevention Trial and the National Heart, Lung and Blood Institute Type II Coronary Intervention Study.
- Discussion of diet therapy and hypolipidemic drug mechanisms.
Main Results:
- Lowering cholesterol levels demonstrably decreases coronary heart disease events.
- Diet therapy can reduce blood cholesterol by 10-15%.
- Combination therapy (diet and drugs) can lower cholesterol by 30% or more, reducing CHD events by 2% for every 1% cholesterol decrease.
Conclusions:
- Effective management of hypercholesterolemia is crucial for CHD prevention.
- Both diet and pharmacological interventions play vital roles in reducing lipid levels.
- Aggressive cholesterol reduction strategies are associated with significant decreases in CHD event rates.
Abstract:
One of the modifiable risk factors associated with coronary heart disease (CHD) is hypercholesterolemia. This paper reviews the major plasma lipids and how they relate to coronary heart disease. Among blacks, CHD is the leading cause of death and disability. Blacks, in general, have been found to have lower low density lipoprotein (LDL), lower very low density lipoprotein (VLDL), and higher high density lipoprotein (HDL) levels than whites, but there is some evidence to suggest that lipid and lipoprotein profiles may differ in middle and upper socioeconomic subgroups of the black population from those reported for lower socioeconomic groups.The results of the Lipid Research Clinics Coronary Primary Prevention Trial and the National Heart, Lung and Blood Institute Type II Coronary Intervention Study have shown that lowering cholesterol levels in persons with high blood cholesterol will decrease the rate of coronary heart disease events.Diet therapy is the mainstay of treatment, and may lower blood cholesterol levels by 10 to 15 percent. For those unresponsive to diet therapy alone, a number of hypolipidemic drugs are available; some drugs (cholestyramine and colestipol) work by increasing the clearance of lipoprotein and others (clofibrate, nicotinic acid, and probucol) decrease the production of lipoproteins. The combination of diet and drugs may result in a decrease in cholesterol levels of 30 percent or more. For each 1 percent that cholesterol is decreased, there is a 2 percent decrease in coronary heart disease events.