GCG and Parkinson disease: We found that up-regulation of DMT1 in PD mice could be suppressed by L. lactis MG1363-pMG36e-GLP-1, indicating that the iron-suppression of L. lactis MG1363-pMG36e-GLP-1 might be mediated via suppression of DMT1, instead of TfR1, which is consistent with the previous report [34].