Circadian Clock Times Immune Response
The molecular response of an organism -- be it mouse or man -- to pathogenic invasion is controlled by circadian rhythms, researchers found. In mice exposed to infection at the highest and lowest time of activity in the 24-hour light-dark cycle of an immune protein known as toll-like receptor 9 (TLR9), those whose exposure was at the nadir of TLR9 expression had much more severe sepsis, according to Erol Fikrig, MD, ... (read more)