Comparison of P-Triglyceride Levels among Patients with Human Immunodeficiency Virus on Randomized Treatment with Ritonavir, Indinavir or Ritonavir/Saquinavir

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Abstract
This study compared the alterations in p-triglyceride (PT) in 111 protease inhibitor (PI)-naive patients on randomized treatment with either indinavir (800 mg 3 times daily), ritonavir (600 mg twice daily) or ritonavir/saquinavir (400 mg each twice daily) and 2 nucleoside reverse transcriptase inhibitors (NRTIs). PT (non-fasting) was measured at regular intervals until week 48. PT levels were evaluated in relation to PI regime, CD4 cell count and prior NRTI experience. The effect on PT levels of changing PI regime was analysed. For 24 patients fasting and non-fasting PT values were correlated. In the ritonavir-containing arms PT levels increased significantly (median PT at baseline: 1.80 mmol/l; week 36: 2.3 mmol/l; p < 0.001). In the indinavir arm no significant rise in PT levels was observed. Comparing the PI arms at week 48 showed significantly higher levels of PT in the ritonavir-containing arms than in the indinavir arm (p < 0.001). There was a high correlation between fasting and non-fasting PT values (p < 0.001, p = 0.88). A significant decline in PT values when changing PI treatment was observed (n = 13, p = 0.016). Ritonavir-containing regimens caused a rapid and sustained elevation of PT values, while indinavir did not significantly affect PT levels.

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