Dysfunctional HDL and progression of atherosclerosis in HIV-1-infected and -uninfected adults.

TitleDysfunctional HDL and progression of atherosclerosis in HIV-1-infected and -uninfected adults.
Publication TypeJournal Article
Year of Publication2013
AuthorsKelesidis T, Yang OO, Kendall MA, Hodis HN, Currier JS
JournalLipids Health Dis
Date Published2013
KeywordsAdult, Atherosclerosis, California, Carotid Arteries, Carotid Intima-Media Thickness, CD4 Lymphocyte Count, Cholesterol, HDL, Disease Progression, European Continental Ancestry Group, Female, HIV Infections, HIV Protease, HIV Protease Inhibitors, HIV-1, Humans, Male, Middle Aged, Oxidation-Reduction, Prospective Studies, Retrospective Studies, Rhodamines, Waist Circumference

BACKGROUND: HDL function rather than absolute level may be a more accurate indicator for risk of developing atherosclerosis. Dysfunctional HDL has increased redox activity and reduced antioxidant properties, but it is unknown whether abnormal HDL function is associated with progression of atherosclerosis in HIV-1-infected subjects.

FINDINGS: We retrospectively measured serum HDL function in 91 subjects from a prospective 3-year study of carotid artery intima-media thickness (CIMT), which enrolled triads of risk factor-matched persons that were HIV-1-uninfected (n=36) or HIV-1+ with (n=29) or without (n=26) protease inhibitor (PI)-based therapy for ≥ 2 years. HDL function was assessed using a biochemical assay that measures the oxidation of dihydrorhodamine 123 (DHR oxidation rate, DOR), in which higher DOR readout corresponds to dysfunctional HDL phenotype.There were no significant associations between DOR and HIV-1 infection. In univariate analysis of 55 HIV-1-infected subjects, greater waist circumference and lower serum HDL were significantly associated with higher baseline levels of DOR (p=0.01). These subjects had significant increases in levels of DOR over time (3 years) that were associated with white race (p=0.03), higher nadir CD4 count (p<0.001), and lower baseline CIMT (p<0.001). Lower baseline HDL levels, but not function of HDL (p>0.1) (DOR), were significantly associated (p=0.02) with progression of CIMT.

CONCLUSION: In a small matched cohort study of HIV-1-infected subjects who had a low cardiovascular risk profile, HDL function changed over time and was independently associated with anthropometric parameters of obesity but not with progression of CIMT.

Alternate JournalLipids Health Dis
PubMed ID23510548
PubMed Central IDPMC3602051
Grant List5R01HL095126 / HL / NHLBI NIH HHS / United States
AI056933 / AI / NIAID NIH HHS / United States
AI068634 / AI / NIAID NIH HHS / United States
AI28697 / AI / NIAID NIH HHS / United States