MFN2 and type 2 diabetes mellitus: The Drp1 expression increased in renal arteries of type 2 diabetes patients and in aorta of db/db mice compared with that in the control patients and mice treated with exogenous H2S, whereas the Mfn-2 expression decreased in kidney arteries from patients with type 2 diabetes and aortic arteries from db/db mice compared with that in the control patients and mice treated with exogenous H2S (Fig. 7a, b).