Related Experiment Video
Updated: Jul 20, 2026

19:57
An Affordable HIV-1 Drug Resistance Monitoring Method for Resource Limited Settings
Published on: March 30, 2014
[Resistance to antiretroviral therapy]
A Alberdi Leniz1, M Tuset Creus, M Martín Conde
1Servicio de Farmacia, Hospital Clínic i Provincial, 08036 Barcelona. alberdi.leniz@cofb.net
Summary
Understanding HIV drug resistance is key to effective treatment. This review details resistance mechanisms, contributing factors, and interpretation of resistance tests for better patient outcomes.
Area of Science:
- Virology and Pharmacology
- Antiretroviral Therapy (ART) Resistance Mechanisms
- Drug Resistance in HIV Infection
Context:
- High rates of virologic failure (50%) and resistance (up to 80%) in HIV-positive patients under treatment.
- Significant resistance rates (around 10%) observed even in treatment-naive patients.
- Complex interplay of viral, patient, and therapeutic factors contributes to ART resistance.
Purpose:
- To elucidate the mechanisms and patterns of antiretroviral drug resistance across different drug classes.
- To identify key factors influencing the development of resistance to antiretroviral therapy (ART).
- To provide a comprehensive understanding of resistance testing interpretation.
Summary:
- A review of 94 selected reports identified factors in resistance development and test interpretation, alongside specific resistance patterns for antiretroviral drug families.
- Detailed enzymatic mechanisms, mutation classifications, and nomenclature associated with ART resistance were described.
- The influence of specific mutations on treatment success or failure was analyzed.
Impact:
- Enhanced understanding of antiretroviral resistance mechanisms and patterns is crucial for predicting treatment outcomes.
- Pharmacists can play an integral role in managing and preventing ART resistance through informed therapeutic strategies.
- Knowledge of resistance facilitates personalized treatment approaches and improves patient management in HIV care.
Related Concept Videos
Retrovirus Life Cycles
Retroviruses have a single-stranded RNA genome that undergoes a special form of replication. Once the retrovirus has entered the host cell, an enzyme called reverse transcriptase synthesizes double-stranded DNA from the retroviral RNA genome. This DNA copy of the genome is then integrated into the host’s genome inside the nucleus via an enzyme called integrase. Consequently, the retroviral genome is transcribed into RNA whenever the host’s genome is transcribed, allowing the retrovirus to...
Retroviruses
Retroviruses and retrotransposons both insert copies of their genetic elements into the genome of the host cell. Thus, the viral genes are passed on when the host genome is replicated or translated. A typical retroviral DNA sequence contains 3-4 genes that encode the different proteins required for its structural assembly and function as a molecular parasite. This DNA is transcribed into a single mRNA, which is very similar in structure to conventional mRNAs, i.e., it is capped at the 5’...
Inhibitors of Viral Protein Synthesis
Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...
Antiviral Nucleoside Inhibitors
Antiviral Nucleoside InhibitorsAntiviral nucleoside inhibitors are structural analogs of natural nucleosides that interfere with viral DNA or RNA synthesis. These compounds selectively target viral polymerases due to their resemblance to host nucleosides, thereby disrupting viral genome replication.Mechanism of Acyclovir ActionAcyclovir is a guanosine analog with a three-carbon acyclic side chain. It selectively targets herpes simplex virus type 1 (HSV-1), herpes simplex virus type 2 (HSV-2),...
Inhibitors of Virion Maturation and Assembly
As part of their replication cycle, certain viruses synthesize long precursor proteins called polyproteins within infected host cells. In human immunodeficiency virus (HIV), two major polyproteins are produced: Gag and Gag-Pol. The Gag polyprotein supplies the structural components of the virus, while Gag-Pol includes essential viral enzymes such as reverse transcriptase, integrase, and protease. After synthesis, these polyproteins move to the host cell membrane, where they assemble into an...
Antiprotozoal Agents
Leishmaniasis is a widespread parasitic disease caused by several Leishmania species. It affects millions of people each year and remains a major public health problem in endemic regions. First-line treatment relies on pentavalent antimonials, including meglumine antimoniate and sodium stibogluconate. Even so, how these drugs work has not been fully clear, especially their interaction with parasite-specific biochemical pathways. One key target is trypanothione reductase (TR), an enzyme that...

