Popular sugar substitute linked to brain cell damage and stroke risk

Erythritol, a widely used sugar substitute found in many low-carb and sugar-free products, may not be as harmless as once believed. New research from the University of Colorado Boulder reveals that even small amounts of erythritol can harm brain blood vessel cells, promoting constriction, clotting, and inflammation—all of which may raise the risk of stroke.

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Turning wood into pharmaceutical ingredients

Production of hazardous waste during drug manufacturing is a serious concern for the pharmaceutical industry. Typically, large amounts of flammable solvents are used during these processes, which usually require several steps to make structurally complex drugs. Researchers now report a method to produce pharmaceutically relevant compounds in just two or three steps, with water as the only waste product, using renewable woodchips as starting material.

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Mapping international drug use through the world's largest wastewater study

A seven-year project monitoring illicit drug use in 37 countries via wastewater samples shows that cocaine use was skyrocketing in Europe in 2017 and Australia had a serious problem with methamphetamine.

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Single mutation dramatically changes structure and function of bacteria's transporter proteins

Swapping a single amino acid in a simple bacterial protein changes its structure and function, revealing the effects of complex gene evolution, finds a new study. The study — conducted using E. coli bacteria — can help researchers to better understand the evolution of transporter proteins and their role in drug resistance.

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Transient and long-term disruption of gut microbes after antibiotics

Antibiotic treatment is known to disrupt the community structure of intestinal microbes — the 500 to 1,000 bacterial species that have a mainly beneficial influence in humans. A study now has tracked this disruption at the level of a strain of microbes replacing another strain of the same species in 30 individuals — all of them young, healthy adults who would be expected to have stable microbial communities.

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