Gut instinct: Bile acid-triggered bacterial adaptation characterized

An international team has shown how the Salmonella protein RamR senses bile acids present in the gut, leading to the activation of a multidrug efflux system that helps bacterial cells to get rid of toxins. This system helps the bacteria to survive and colonize this habitat despite harsh conditions. These findings could form the basis for new therapeutic approaches aimed at combating bacterial infection.

Prescribing healthy food in Medicare/Medicaid is cost effective, could improve health

A team of researchers modeled the health and economic effects of healthy food prescriptions in Medicare and Medicaid. The study finds that health insurance coverage to offset the cost of healthy food for Medicare and/or Medicaid participants would be highly cost effective after five years and improve health outcomes.

How attention helps the brain perceive an object

The ability of the brain to ignore extraneous visual information is critical to how we work and function, but the processes governing perception and attention are not fully understood. Scientists have long theorized that attention to a particular object can alter perception by amplifying certain neuronal activity and suppressing the activity of other neurons (brain ”noise”). Now, scientists have confirmed this theory by showing how too much background noise from neurons can interrupt focused attention and cause the brain to struggle to perceive objects.