Commentary for Development of the Circadian Clockwork in the Kidney: Molecular Origin of the Kidney Clock

Increasing evidence suggests that a functional circadian clock in the kidney contributes to the regulation of renal function including blood pressure and sodium balance. When does this kidney clock begin ticking? Meszaros et al. provide the first evidence that the endogenous molecular machinery of the circadian clock begins oscillating in the late fetal kidney. These findings have important implications for our understanding of how homeostasis is maintained in early life.