Rapid Regulation of Intestinal Divalent Metal (Cation) Transporter 1 (DMT1/DCT1) and Ferritin mRNA Expression in Response to Excess Iron Loading in Iron-Deficient Rats

Abstract

We determined the effects of excess iron on the expression of duodenal divalent metal transporter 1 (DMT1) and ferritin (Ft) in iron-deficient rats which had increased iron absorption. DMT1 mRNA was down-regulated and Ft mRNA was up-regulated 2 h after administering the iron. However, more than 2 h was needed for Ft protein synthesis to occur in the duodenal mucosa.

• divalent metal transporter 1 (DMT1)/DCT1
• ferritin
• iron deficiency
• excess iron