An Iron Requirement For the Synchronous Progression of Colonic Cells Following Fasting and Refeeding

Abstract
Dietary Fe is a major co-factor in the colonic hyperplasia following fasting and refeeding. The Fe component serves to remove a fasting induced colonic G1 cycle block and produce the resultant synchronous progression of cells through the cycle. Deleting Fe from the refed diet results in no colonic hyperplasia and/or synchronous progression of cells. Colonic steady state cell renewal and its use as a possible tool for the study of in vivo steady state cell renewal is discussed.
Keywords