Effect of Chromium Supplementation of GLUT4 Transporters
GLUT4 is the principle glucose transporter, responsible for facilitating the movement of glucose into the cell.1 A recent study found that longissimus muscle biopsies from cattle supplemented chromium propionate had an increase in internalized GLUT4s after a 147-day feeding period (Figure 1),2 which indicated these animals had more sufficient insulin sensitivity compared to the controls at day 147. The decrease of GLUT4 density on day 147 in the control animals have been an indication of decreased insulin sensitivity or insulin resistance occurring.
