Investigators at Washington University in St. Louis and Umea University have reported that the small molecule PS-757 was effective in culture and animal models against Streptococcus pyogenes, a gram-positive pathogen responsible for more than 500,000 deaths per year globally.

Researchers led by Emanuel Hanski at the Hebrew University of Jerusalem have identified a class of molecules that inhibit endoplasmic reticulum (ER) stress and could decrease mortality in mice infected with Streptococcus pyogenes, also known as the group A streptococci.