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Published on: May 9, 2025
[Tenofovir as a strategy to avoid or limit adverse effects]
1Unidad de Enfermedades Infecciosas, Hospital General Universitario de Alicante, Alicante, España. portilla_joa@gva.es
Substituting thymidine analogues like stavudine and zidovudine with tenofovir DF improves lipoatrophy and metabolic profiles in patients. This switch maintains antiretroviral therapy efficacy while mitigating adverse effects.
Area of Science:
- Pharmacology
- Virology
- Metabolic Medicine
Context:
- Thymidine analogues (stavudine, zidovudine) used in antiretroviral therapy can cause mitochondrial DNA depletion, leading to adverse effects like lipodystrophy.
- Lipoatrophy, a significant side effect, lacks specific treatments and is linked to thymidine analogue exposure.
Purpose:
- To evaluate the effects of substituting thymidine analogues with tenofovir DF on lipoatrophy and other antiretroviral therapy-related side effects.
- To assess the impact of this substitution on body fat distribution, metabolic profiles, and hemoglobin levels.
Summary:
- Prospective observational studies and randomized clinical trials involving over 2000 patients show that switching from thymidine analogues to tenofovir DF increases total body fat, particularly in the face and extremities.
- This substitution improves lipid and metabolic profiles and elevates hemoglobin levels upon discontinuation of zidovudine.
- Antiviral and immunological efficacy of the antiretroviral therapy is maintained or enhanced.
Impact:
- The substitution strategy is strongly recommended for antiretroviral therapy due to robust scientific data demonstrating improved lipoatrophy and metabolic outcomes.
- This approach offers a viable solution for managing adverse effects associated with thymidine analogue use in HIV treatment.
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