Indinavir did not further increase mean triglyceride levels in HIV-infected patients treated with nucleoside reverse transcriptase inhibitors: an analysis of three randomized clinical trials

Metabolic abnormalities in human immunodeficiency virus patients with protease inhibitor-based therapy

CONTEXT

Several studies have reported metabolic abnormalities in patients taking protease inhibitor (PI) based therapy from several parts of the world. But there is no prospective study in India after switching from PI sparing regimen to PI based regimen.

AIMS

To assess whether North-East Indian Human Immunodeficiency Virus (HIV) patients also develop similar metabolic abnormalities to PI.

SETTINGS AND DESIGN

This prospective study was conducted in Anti-retroviral therapy (ART) Centre of Excellence, at a tertiary care Medical Institute.

MATERIALS AND METHODS

Fifty-five patients taking PI based ART were taken for the study. These patients were started on Ritonavir based therapy, after treatment with first line drugs had failed according to National AIDS Control Organization (NACO) guidelines 2008. Glucose and lipid profiles were evaluated. American Diabetes Association (ADA) and NCEP ATP III criteria were used to categorize glucose and lipid abnormalities. International Diabetes Federation (IDF) 2006 cut-off was used for waist circumference and blood pressure.

STATISTICAL ANALYSIS USED

Paired t-test was done whenever applicable.

RESULTS

There was a significant increase in waist circumference after 6 months of 2(nd) line ART from 78.0 cm to 80.2 cm (P value < 0.001). There was significant increase in both systolic and diastolic blood pressure after 6 months. In 29.8% of patients blood pressure rose to hypertensive level after 6 months. Total cholesterol, triglyceride and low density lipoprotein cholesterol also rose significantly after 6 months but not high density lipoprotein cholesterol.

CONCLUSIONS

Our study showed that North-Eastern Indian patients also develop metabolic abnormalities to protease inhibitors similar to people of other races.

Indinavir/ritonavir remains an important component of HAART for the treatment of HIV/AIDS, particularly in resource-limited settings

For over a decade, indinavir has been approved for the treatment of HIV/AIDS; however, following the introduction of new protease inhibitors (PIs) with improved safety and pharmacologic profiles, its use in developed countries has become almost obsolete. In contrast, in resource-limited settings where the majority of people living with HIV/AIDS reside, indinavir is part of the most affordable PI-based highly active antiretroviral treatment regimen. A major drawback of indinavir use is renal toxicity, but low-dose indinavir plus ritonavir (400/100 mg) twice daily is both efficacious and tolerable. Similar low dosing levels in children have also proven successful, but data in pregnant women remains limited. Due to its low cost and proven efficacy indinavir remains a key component of HIV/AIDS treatment in resource-limited settings.

Dyslipidemia in an Asian population after treatment for two years with protease inhibitor-containing regimens

There are limited data about dyslipidemia in Asian patients treated with combination antiretroviral therapy. To assess the relative association of different protease-inhibitor-containing regimens with the degree of dyslipidemia, fasting lipid levels were compared during 110 weeks in 250 nucleoside-experienced but protease-inhibitor-naïve Thai patients beginning treatment with 5 protease-inhibitor-containing regimens. Regimens were (1) stavudine, didanosine, and saquinavir; (2) zidovudine, lamivudine, and saquinavir; (3) zidovudine, lamivudine, and indinavir; (4) zidovudine, lamivudine, and ritonavir-boosted indinavir; and (5) efavirenz and ritonavir-boosted indinavir. Triglyceride levels were available for all patients; total cholesterol and high-densitylipoprotein cholesterol levels were available for patients receiving indinavir. The strongest predictors of dyslipidemia after beginning protease-inhibitor-based therapy were treatment regimen and baseline dyslipidemia. Triglycerides, total cholesterol, and high-density-lipoprotein cholesterol changes from baseline to week 110 were significant in patients taking ritonavir-boosted indinavir. Efavirenz and ritonavir-boosted indinavir were associated with significant high-density-lipoprotein cholesterol increases compared with other regimens. Non-stavudine-containing non-boosted protease-inhibitor-based highly active antiretroviral treatment regimens had the least association with dyslipidemia.