Mice lacking irisin didn’t exhibit the cognition improvements that typically follow exercise, and in mouse models of Alzheimer’s disease, treatment with the hormone reduced cognitive decline.
Long-term administration of the antidepressant fluoxetine was tied to decreased concentrations of about 100 different brain lipids in adolescent macaques, hinting at a potential mechanism underlying the drug’s rare but severe side-effects.
Shoring up the tissues that separate neurons and other brain cells from the circulatory system in fruit flies and mice can prolong life in the presence of a tumor.
Research on microneedle patches for vaccine delivery has grown in popularity in recent years, due to their exceptional compliance and low invasiveness.
As fires blanket growing swathes of the West, scientists are beginning to understand more about how their smoke affects the transmission and severity of COVID-19 and other illnesses, and how it differs from that of other types of air pollution.
The Scientist spoke with Rachel Zeig-Owens, the director of epidemiology for the World Trade Center Health Program, about what scientists have learned after two decades of studying illness and disease among survivors.
The SARS-CoV-2 variant was first detected in January, but its rising prevalence and potential resistance to vaccines has garnered it special attention from the World Health Organization.
A study suggests that mutations in the gene that encodes the T1R1/T1R3 taste receptor allowed primates that relied on insects for protein to transition to eating leaves and fruit.
Leiden University’s Carel ten Cate tracked down 34-year-old duck recordings—and the man who made them—to verify that musk ducks are capable of vocal learning, an ability that hadn’t been thought to exist in waterfowl.
