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Distribution of lipoprotein phenotypes, cholesterol, and lipids in inner-city blacks
1Renaissance Health Care Network, Drew Hamilton Clinic, Harlem Hospital Center Department of Ambulatory Care, New York, New York.
Insights
Black inner-city residents showed a higher prevalence of Type IIA lipoprotein phenotype compared to the general US population. This finding suggests potential implications for coronary heart disease risk and treatment strategies.
Area of Science:
- Cardiovascular Health
- Lipid Metabolism
- Public Health
Background:
- Lipoprotein phenotypes are crucial indicators of cardiovascular risk.
- Previous research indicates variations in lipoprotein profiles across different populations.
- Understanding these variations is essential for targeted health interventions.
Purpose of the Study:
- To analyze lipoprotein phenotypes in a predominantly black, inner-city population.
- To compare the distribution of lipoprotein phenotypes with the general US population.
- To assess potential implications for coronary heart disease (CHD) risk.
Main Methods:
- Blood samples from 189 patients (aged 7-88) at Drew Hamilton Clinic (1987-1988) were analyzed.
- Lipoprotein levels including total cholesterol, HDL, LDL, and triglycerides were measured.
- Phenotype distributions were compared between the study group and US general population data.
Main Results:
- Sixty-seven percent of the study population exhibited Type IIA phenotype, significantly higher than the estimated 10% in the general US population.
- Type IV (24% vs. 45%), Type IIB (9% vs. 40%), and Type V (0% vs. 5%) phenotypes were less frequent in the study group compared to the general population.
- Types I and III were rare in both groups.
Conclusions:
- A significantly increased frequency of Type IIA lipoprotein phenotype was observed in this black, inner-city cohort.
- This elevated Type IIA prevalence may necessitate tailored treatment strategies for this population.
- The findings highlight the importance of considering population-specific lipoprotein profiles for predicting coronary heart disease risk.
Abstract:
Lipoprotein phenotypes total cholesterol, high-density lipoprotein (HDL), low-density lipoprotein (LDL), and triglyceride levels were obtained from blood samples of 189 patients attending the Drew Hamilton Clinic in Central Harlem, New York, between 1987 and 1988. The study population ranged in age from 7 to 88 years; 135 of the patients were females and 54 were males. A difference in distribution of lipoprotein phenotypes was observed compared with the general population of the United States. Sixty-seven percent of blacks in this study were Type IIA compared with an estimated 10% of the general US population. Differences also were observed for blacks versus the general US population for Type IV (24% versus 45%), Type IIB (9% versus 40%), and Type V (0% versus 5%). Types I and III were rare in both groups (0% versus < 1%). The increased frequency of Type IIA among this predominantly black inner-city population may have implications for treatment strategies and prognostic value for predicting the risk of coronary heart disease.