STAT3 and type 2 diabetes mellitus: JMT promoted the polarization of macrophages from the M1 to the M2 phenotype in both bone marrow-derived macrophages and those infiltrating the sciatic nerve, which was mediated through the suppression of abnormal activation of the JAK2/STAT3 signaling pathway.<h4>Conclusions</h4>JMT promotes the polarization of macrophages from the M1 to M2 phenotype and alleviates neuroinflammation in T2DM rats with DPN, which is associated with inhibition of the JAK2/STAT3 signaling pathway.