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How a Brazilian snake's venom led to a widely used blood pressure drug

By · Via Times of India · Published by Everything Blog

In short

In 1965, Sergio Ferreira discovered that venom from *Bothrops jararaca* contained substances that enhanced blood-vessel-dilating bradykinin by inhibiting angiotensin-converting enzyme. Although scientists successfully isolated the ACE-inhibiting peptide teprotide from the venom, the molecule could not be administered orally for routine treatment. To overcome this limitation, researchers engineered a chemical compound that mimicked the venom's activity in a stable tablet form. This intensive chemical design led to the 1981 approval of captopril, creating a major drug class that treats hypertension, heart failure, and kidney conditions.

Key points

  • Angiotensin-converting enzyme typically narrows blood vessels by producing angiotensin II…: Angiotensin-converting enzyme typically narrows blood vessels by producing angiotensin II while breaking down blood-vessel-relaxing bradykinin.
  • Captopril was created through chemical design in the laboratory rather than through the d…: Captopril was created through chemical design in the laboratory rather than through the direct administration of raw snake venom.
  • The biological blueprint provided by snake venom helped establish ACE inhibitors as stand…: The biological blueprint provided by snake venom helped establish ACE inhibitors as standard treatments for hypertension, heart failure, and kidney disease.

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Long before modern medical science emerged, nature held answers to healing, protection and healthy living within its bounds. Across several communities and spiritual cosmologies, the natural world has been viewed as the guide for the human world, as have the species that reside in it. Among the myriad spcies that have been a major subject of scientifc study, the animal venom has held serious importance. Therefore, native to parts of South American, including Brazil, a pit viper that possesses harmful venom was researched in the 1960s. The snake in question was Bothrops jararaca, commonly known as the Brazilian lancehead or jararaca.

(Image credit: Canva)

As researchers investigated its biolgical effects, they discovered compounds that would help shape the evolution of a new class of medicine, soemthing that would go on to change the use of western drugs in cardiovascular medicine, as this pit viper went on to change the treatment of blood pressure. With this seminal discovery, a research led a new pathway for a harmful substance to become a paramount drug. This work contributd to the

development of captopril,…

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