Paracetamol (acetaminophen) poisoning: The early years

Area of Science:

• Toxicology
• Pharmacology
• Hepatology

Background:

• Paracetamol (acetaminophen) was introduced without toxicity studies, leading to widespread self-poisoning and acute liver damage.
• Delayed liver function abnormalities and lack of initial treatment complicated patient management.
• The discovery of paracetamol's hepatotoxicity mechanism and effective treatments marked significant advancements.

Purpose of the Study:

• To review the history and advancements in managing paracetamol (acetaminophen) overdose.
• To discuss the evolution of treatment strategies and the search for novel biomarkers.
• To highlight the persistent challenges in treating late-presenting paracetamol poisoning.

Main Methods:

• Historical review of paracetamol (acetaminophen) toxicity and treatment.
• Analysis of the development and refinement of N-acetylcysteine therapy.
• Exploration of emerging biomarkers for paracetamol-induced liver injury.

Main Results:

• The Rumack-Matthew nomogram improved risk stratification for paracetamol overdose.
• N-acetylcysteine (NAC) emerged as the primary treatment, with improved administration protocols reducing adverse effects.
• Novel biomarkers like microRNAs and paracetamol-protein adducts show promise for early detection.

Conclusions:

• N-acetylcysteine remains the cornerstone of paracetamol (acetaminophen) overdose treatment, especially when administered early.
• Despite treatment advances, late-presenting cases and the need for improved biomarkers remain critical challenges.
• Continued research into novel biomarkers and late-stage interventions is essential for improving outcomes in paracetamol poisoning.