硫化氢治疗可通过增加胰岛素受体敏感性而促进葡萄糖摄取并且改善2型糖尿病患者的肾脏病变

Department of Physiology and Pathophysiology, Fudan University Shanghai Medical College, 138 Yi Xue Yuan Road, Shanghai 200032, China

Aims: To examine if hydrogen sulfide (H₂S) can promote glucose uptake and provide amelioration in type 2 diabetes. Results: Treatment with sodium hydrosulfide (NaHS, an H₂S donor) increased glucose uptake in both myotubes and adipocytes. The H₂S gas solution showed similar effects. The NaHS effects were blocked by an siRNA-mediated knockdown of the insulin receptor (IR). NaHS also increased phosphorylation of the IR, PI3K, and Akt. In Goto-Kakizaki (GK) diabetic rats, chronic NaHS treatment (30 μmol·kg^-1·day^-1) decreased fasting blood glucose, increased insulin sensitivity, and increased glucose tolerance with increased phosphorylation of PI3K and Akt in muscles. Similar insulin-sensitizing effects of NaHS treatment were also observed in Wistar rats. Moreover, glucose uptake was reduced in the cells with siRNA-mediated knockdown of the H₂S-generating enzyme cystathionine γ-lyase in the presence or absence of exogenous H₂S. Moreover, chronic NaHS treatment reduced oxygen species and the number of crescentic glomeruli in the kidney of GK rats. Innovation and Conclusion: This study provides the first piece of evidence for the insulin-sensitizing effect of NaHS/H₂S in the both in vitro and in vivo models of insulin resistance. Rebound Track: This work was rejected during a standard peer review and rescued by the Rebound Peer Review (Antoxid Redox Signal 16: 293-296, 2012) with the following serving as open reviewers: Jin-Song Bian, Samuel Dudley, Hideo Kimura, and Xian Wang. Antioxid. Redox Signal. 19, 5-23. © 2013, Mary Ann Liebert, Inc.