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Changes in Lipids and Lipoprotein Particle Concentrations After Interruption of Antiretroviral Therapy

Lampe, FC; Duprez, DA; KullerMd, LH; Tracy, R; Otvos, J; Stroes, E; Cooper, DA; ... INSIGHT SMART Study Grp, ; + view all (2010) Changes in Lipids and Lipoprotein Particle Concentrations After Interruption of Antiretroviral Therapy. JAIDS-J ACQ IMM DEF , 54 (3) 275 - 284. 10.1097/QAI.0b013e3181d32158.

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Abstract

Background: The effect of interruption of antiretroviral therapy (ART) on lipoprotein particle subclasses has not been studied. We examined short-term changes in lipids and lipoprotein particles among 332 HIV-infected individuals randomized to interrupt or continue ART in the "Strategies for Management of Antiretroviral Therapy" trial.Methods: Lipids and lipoprotein particles measured by nuclear magnetic resonance spectroscopy were compared between randomized groups at month 1; associations with inflammatory and coagulation markers (high sensitivity C-reactive protein; interleukin 6; amyloid A; amyloid P; D-dimer; prothrombin fragment 1 + 2) were assessed.Results: Compared with continuation of ART, treatment interruption resulted in substantial declines in total, low-density lipoprotein (LDL) and high-density lipoprotein (HDL) cholesterol, and triglyceride, at month 1 but had little net effect on total/HDL cholesterol ratio [baseline-adjusted mean difference [95% confidence interval (CI)] interruption versus continuation arms: -0.10 (-0.59 to 0.38); P = 0.67]. ART interruption resulted in declines in total, large, and medium very low density lipoprotein (VLDL) particle concentrations (VLDL-p) and total and medium HDL-p. However, there was no change in small HDL-p [baseline-adjusted percentage difference between arms: -4.6% (-13.1%, +5.1%); P = 0.35], small LDL-p [-5.0% (-16.9%, +8.6%); P = 0.45], or other LDL-p subclasses. Changes in lipid parameters on ART interruption did not differ according to baseline ART class (protease inhibitor versus non-nucleoside reverse transcriptase inhibitor) but were negatively associated both with changes in HIV viral load and with changes in inflammatory and coagulation markers, particularly D-dimer.Conclusions: These results suggest that ART interruption does not favorably influence overall lipid profile: there was little net effect on total/HDL cholesterol ratio, and no change in small LDL-p or small HDL-p, the lipoprotein particle subclasses most consistently linked to coronary risk. Short-term declines in lipid parameters after ART interruption were not associated with class of ART and may be linked to increases in viral replication, inflammation and coagulation.

Type: Article
Title: Changes in Lipids and Lipoprotein Particle Concentrations After Interruption of Antiretroviral Therapy
DOI: 10.1097/QAI.0b013e3181d32158
Keywords: antiretroviral therapy interruption, coagulation markers, inflammatory markers, lipids, lipoprotein particle subclasses, LOW-DENSITY-LIPOPROTEIN, MAGNETIC-RESONANCE-SPECTROSCOPY, CYCLE STRUCTURED INTERMITTENT, CORONARY-ARTERY DISEASE, HIV-INFECTED PATIENTS, CARDIOVASCULAR-DISEASE, IMMUNE ACTIVATION, RANDOMIZED-TRIAL, NAIVE PATIENTS, RISK
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Pop Health Sciences > Institute for Global Health
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Pop Health Sciences > Institute for Global Health > Infection and Population Health
URI: http://discovery.ucl.ac.uk/id/eprint/106395
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