Advances in understanding drug-induced neuropathies

Area of Science:

• Neuroscience
• Pharmacology
• Toxicology

Background:

• Peripheral neuropathy is a frequent neurotoxic adverse effect of common medications.
• This neuropathy can limit drug dosage for critical conditions like malignancy and HIV.
• Epidemiological data confirm associations between certain drugs and neuropathy.

Purpose of the Study:

• To review drug-induced neurotoxic peripheral neuropathies.
• To discuss mechanisms and potential preventative strategies for drug-induced neuropathy.

Main Methods:

• Review of epidemiological evidence and case reports.
• Analysis of mechanisms of neuropathy for specific drug classes.
• Discussion of diagnostic advancements, such as lactate levels.

Main Results:

• HMG-CoA reductase inhibitors (statins) can cause axonal or small-fibre neuropathy, which typically resolves upon drug withdrawal.
• Oxaliplatin induces transient dysesthesia and axonal polyneuropathy.
• Thalidomide is linked to painful axonal sensorimotor neuropathy, which may not improve after discontinuation.
• Nucleoside reverse transcriptase inhibitors cause sensory neuropathy, potentially via mitochondrial DNA replication interference.
• Lactate levels may differentiate nucleoside analogue-induced neuropathy from HIV-induced neuropathy.

Conclusions:

• Drug-induced peripheral neuropathy is a significant clinical concern.
• Understanding the specific mechanisms of drug-induced neuropathy is crucial for developing preventative measures.
• Advances in understanding and diagnosis, like lactate level analysis, contribute to managing this condition.