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Optimal fosamprenavir regimen to prevent lipid abnormalities
Emanuela Lattuada1, Massimiliano Lanzafame, Carmela Grosso
1Infectious Disease Unit, G.B. Rossi Hospital, Verona, Italy.
Acta Bio-Medica : Atenei Parmensis
|June 29, 2010
Summary
This study on HIV patients found that while fosamprenavir boosted regimens were effective for immune and viral response, higher ritonavir doses correlated with increased cholesterol and triglyceride levels. Further research into lipid management is warranted.
Area of Science:
- Infectious Diseases
- Pharmacology
- Cardiovascular Health
Background:
- Human Immunodeficiency Virus (HIV) infection requires long-term antiretroviral therapy (ART).
- Fosamprenavir, a protease inhibitor, is often boosted with ritonavir to enhance its efficacy.
- Understanding the impact of different boosted regimens on metabolic parameters like lipid levels is crucial for patient management.
Purpose of the Study:
- To evaluate the effect of varying fosamprenavir boosted regimens on plasma lipid profiles in treatment-naive, HIV-seropositive patients.
- To assess the immuno-virological response and safety of these regimens over 18 months.
- To identify potential correlations between ritonavir dosage and changes in lipid levels.
Main Methods:
- A cohort of 48 naive, HIV-monoinfected patients were initiated on ART with different fosamprenavir boosted regimens.
- Plasma lipid levels (cholesterol, LDL, triglycerides) were monitored over an 18-month period.
- Immuno-virological status and adverse events were assessed regularly.
Main Results:
- All patients achieved significant immuno-virological response with no ART regimen changes or adverse events reported.
- A statistically significant difference in lipid levels was observed among the groups.
- Patients receiving higher doses of ritonavir exhibited significantly elevated cholesterol (including LDLs) and triglyceride levels.
Conclusions:
- Fosamprenavir boosted regimens demonstrate good efficacy and safety in naive HIV patients.
- Higher ritonavir doses in boosted regimens are associated with adverse effects on lipid metabolism.
- Careful monitoring of lipid profiles is recommended for HIV patients on boosted protease inhibitor therapy, particularly with higher ritonavir doses.
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