Pesquisadores mexicanos desenvolvem antibióticos a partir de veneno e pimentas

08 de maio de 2026

Reportado por IA

Cientistas da Universidade Nacional Autônoma do México criaram três novos antibióticos usando compostos extraídos do veneno de escorpião e de pimentas habanero. O esforço visa o combate à tuberculose e a outras bactérias que se tornaram resistentes aos tratamentos atuais.

Pesquisadores da Universidade Nacional Autônoma do México identificaram novas abordagens para combater a resistência bacteriana. Eles produziram três antibióticos derivados diretamente do veneno de escorpião e de pimentas habanero.

Study finds madecassic acid, a Centella compound used in skincare, can inhibit drug-resistant E. coli in lab tests

21 de abril de 2026 Reportado por IA Imagem gerada por IA Verificado

Researchers at the University of Kent, working with University College London, report that madecassic acid—a compound derived from the medicinal herb Centella asiatica and widely used in skincare—can inhibit the growth of antibiotic-resistant E. coli by targeting a bacterial respiratory system not found in humans or other animals.

Ancient bacterium in Romanian ice cave resists modern antibiotics

Scientists have discovered a 5,000-year-old bacterium in a Romanian ice cave that resists several contemporary antibiotics. The microbe, isolated from permafrost, carries over 100 resistance genes and could inhibit dangerous superbugs. This finding highlights natural evolution of resistance and potential biotechnological applications.

Tobacco plants engineered to produce five psychedelic drugs

01 de abril de 2026 Reportado por IA

Scientists at the Weizmann Institute of Science in Israel have modified tobacco plants to produce five powerful psychedelic compounds typically found in mushrooms, plants, and toads. The technique uses temporary genetic changes to create a sustainable source for research and potential medicines. Experts say this could simplify production compared to chemical synthesis or harvesting from nature.

Saúde

Scientists engineer bacteria to consume cancer tumors internally

Saúde

Scientists uncover viral proteins targeting bacterial cell wall enzyme

América

Chilean scientists develop ulmo honey patch for wounds

Scorpions reinforce claws and stingers with metals

Researchers at the University of Queensland have discovered that many scorpion species strengthen their claws and stingers using blends of iron, zinc, and manganese. The metals concentrate in the tips and cutting edges, making these weapons tougher, similar to a steel-capped boot. The findings come from examining 18 species worldwide.

Antibiotics accumulate in Brazilian river and fish during dry season

21 de março de 2026 Reportado por IA

Researchers have detected multiple antibiotics in Brazil's Piracicaba River, accumulating in water, sediment, and fish, especially in the dry season. A banned drug, chloramphenicol, was found in lambari fish sold for consumption. Experiments with the aquatic plant Salvinia auriculata showed it can remove some antibiotics but may alter fish exposure.

quinta-feira, 30 de abril de 2026, 04:37h