Artemisinin
Why in news?
Artemisinin is in the news mainly for two opposite trends: reassuring data from some regions and growing concern about resistance in others. It also features in discussions on next-generation malaria drugs that may eventually supplement or replace artemisinin-based therapies.
About the trends
- A recent genetic surveillance study from Iran reported that malaria parasites there do not carry Kelch13 (K13) mutations known to confer artemisinin resistance, suggesting that artemisinin-based combination therapies (ACTs) remain highly effective in that region.
- This reassures policymakers that current treatment protocols can continue, while underlining the need for ongoing molecular surveillance to catch any emergence of resistance early.​
- At the same time, global reports highlight evidence of partial resistance to artemisinin derivatives in multiple African countries, where parasites clear more slowly from patients’ blood but ACTs still cure most cases if the partner drug remains effective.
- The World Health Organization continues to recommend ACTs as first- and second-line treatment for uncomplicated malaria, stressing that regular therapeutic efficacy studies are essential to track both artemisinin and partner-drug performance.​
New malaria treatments beyond artemisinin
- Drug-development news has focused on next-generation therapies designed to work even when parasites show artemisinin resistance.
- A large Phase III trial of a new combination, KLU156 (ganaplacide plus lumefantrine), showed cure rates above 99% and activity against parasites with K13 mutations linked to artemisinin resistance,
- It offeres a promising future alternative to standard ACTs.​
About Artemisinin
Artemisinin is a powerful antimalarial drug derived from the sweet wormwood plant (Artemisia annua), discovered in the 1970s and still central to malaria treatment today.
Origin and Discovery
- Source: Extracted from the leaves of Artemisia annua, also known as sweet wormwood.
- Discovery: Identified in the 1970s by Chinese scientist Tu Youyou, whose work earned her the 2015 Nobel Prize in Physiology or Medicine.
- Traditional Roots: The plant had been used in Chinese medicine for centuries to treat fevers, which guided modern scientific exploration.
Medical Use
- Primary Role: Artemisinin and its derivatives (artesunate, artemether, dihydroartemisinin) are frontline treatments for malaria, especially caused by Plasmodium falciparum.
- Mechanism: It works by producing free radicals inside malaria parasites, damaging their proteins and membranes, leading to parasite death.
- Administration: Often used in Artemisinin-based Combination Therapies (ACTs) to prevent resistance and improve effectiveness.
Global Importance
- Malaria Control: Artemisinin-based therapies have saved millions of lives worldwide, especially in Africa and Asia.
- Resistance Concerns: Recent studies show emerging resistance in parts of Africa, raising alarms for global health.
- WHO Guidelines: ACTs remain the gold standard, but monitoring resistance is critical for future strategies.
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