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Lipoprotein Particle Profiles by Nuclear Magnetic Resonance Spectroscopy in Medically-Underserved HIV-Infected
Barbara Swanson1, Beverly E Sha, Joyce K Keithley
1Rush University College of Nursing, Chicago, Illinois.
Insights
HIV-infected ethnic minorities often have dyslipidemia, increasing cardiovascular risk. Nuclear magnetic resonance (NMR) profiling revealed more individuals outside target ranges than standard tests, highlighting potential CHD risks.
Area of Science:
- Cardiology
- Infectious Diseases
- Public Health
Background:
- HIV infection is linked to dyslipidemia and heightened cardiovascular event risk.
- Medically-underserved HIV-infected ethnic minorities face health disparities and require focused lipid status research.
- Standard lipid panels may not fully capture cardiovascular risk in this population.
Purpose of the Study:
- To characterize the lipid profile of medically-underserved, ethnically diverse HIV-infected individuals.
- To compare standard lipid panels with nuclear magnetic resonance (NMR)-derived lipoprotein particle profiles.
- To assess cardiovascular risk in this population using advanced lipid analysis.
Main Methods:
- Recruitment of 132 participants from a randomized controlled trial for a dietary supplement intervention.
- Collection of sociodemographic, clinical, and behavioral data.
- Analysis of fasting lipid status using standard lipid panels and NMR-derived lipoprotein particle profiles.
Main Results:
- A higher percentage of participants (50%) fell outside target ranges using NMR-derived LDL particle cutoffs compared to standard NCEP LDL cholesterol cutoffs (24%).
- Antiretroviral therapy, particularly protease inhibitor regimens, correlated with elevated LDL particle concentration.
- NMR profiling identified a greater proportion of individuals at risk than conventional methods.
Conclusions:
- Medically-underserved, asymptomatic HIV-infected minorities may face elevated coronary heart disease (CHD) risk.
- NMR-derived lipoprotein values provide a more sensitive assessment of cardiovascular risk in this population.
- Findings underscore the need for targeted cardiovascular risk management strategies in diverse HIV-infected groups.
Abstract:
BACKGROUND: HIV infection is associated with dyslipidemia and increased risk for cardiovascular events. Few studies have described lipid status in medically-underserved, HIV-infected ethnic minorities, a group that is characterized by health disparities. OBJECTIVE: The objective was to characterize the lipid profile of a medically-underserved, largely ethnic minority sample of HIV-infected persons using standard lipid panels and nuclear magnetic resonance (NMR) -derived lipoprotein particle profiles. METHODS: Participants were recruited from a randomized controlled trial of a dietary supplement to manage HIV-related dyslipidemia (N=132). At the initial screening visit, sociodemographic, clinical, and behavioral data were collected, and fasting peripheral venous blood specimens were obtained and lipid status was analyzed using the standard lipid panel and the NMR-derived lipoprotein particle profile. RESULTS: Using NMR-derived LDL particle cutoffs, a higher percentage of participants was outside the target range (50%) than when standard LDL cholesterol NCEP cutoffs were used (24%). Antiretroviral therapy, especially protease inhibitor-containing regimens, was associated with higher LDL particle concentration. CONCLUSION: Substantial numbers of medically-underserved, asymptomatic HIV-infected minorities may be at increased risk for CHD based on NMR-derived lipoprotein values.
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