Health | WPN World People News

Waning donor support for food assistance is seeing increasing food insecurity. Malnutrition and the susceptibility to tuberculosis (TB) are directly linked.

Scientists studying dynamin use an artificial membrane (orange) to analyze the protein’s action. In the first image, dynamin has squeezed the membrane to create two vesicle-like structures (lower right). In the second image, taken seconds later, dynamin has severed the membrane to release these structures.

Activity of a regulator protein called CD33 (green) clogs removal of brain-damaging debris, beta-amyloid protein (red), by support cells, microglia. Left: Microglia of normal control mice (A”) show more CD33 and less beta-amyloid than mice in which CD33 expression is experimentally knocked-out (B”). Right: Little beta-amyloid can be seen in microglia of a mouse line in which CD33 is over-expressed (C”), compared to microglia of mice in which CD33 is experimentally inactivated (D”). Evidence from post-mortem human brains indicates that CD33 is similarly over-active in Alzheimer’s disease, suggesting that a treatment that impedes it might help treat or prevent the disease.