Mitochondrial Toxicity Associated with Nucleoside Reverse Transcriptase Inhibitor Therapy

Area of Science:

• Biochemistry
• Pharmacology
• Toxicology

Background:

• Nucleoside reverse transcriptase inhibitors (NRTIs) are a cornerstone of antiviral therapy.
• NRTIs are associated with a spectrum of severe toxicities, including lactic acidosis, myopathy, and neuropathy.

Purpose of the Study:

• To review the mitochondrial biology and pathophysiology of NRTI-induced toxicity.
• To discuss the clinical manifestations and management strategies for these adverse effects.

Main Methods:

• Literature review of mitochondrial biology.
• Analysis of the mechanism of NRTI-induced DNA polymerase gamma inhibition.
• Review of clinical case studies and management guidelines.

Main Results:

• NRTI-induced mitochondrial toxicity is a unifying mechanism for diverse side effects.
• Inhibition of mitochondrial DNA polymerase gamma by NRTIs disrupts mitochondrial function.
• Clinical manifestations range from metabolic disorders to neuromuscular and cardiac issues.

Conclusions:

• Mitochondrial toxicity is the central mechanism underlying NRTI-related adverse events.
• Understanding this mechanism is crucial for clinical management and the development of safer therapeutics.
• Early recognition and intervention can mitigate the severity of NRTI-induced toxicities.