Objective To explore the protective effect of co-treatment with antioxidants 4-hydroxy-2,2,6,6-tetra-methylpiperidine 1-oxyl (TEMPOL) and reduced glutathione (GSH) in pancreatic injury induced by intermittent hypoxia (IH) in mice. Methods Fifty male C57BL/6J mice were randomly divided into control group(CON), IH group (IH), IH+TEM-POL group (IH+TEMPOL), IH+GSH group (IH+GSH) and IH+TEMPOL+GSH group (IH+TEMPOL+GSH). After successful-ly prepared animal model, the insulin resistance (IR) level, pancreatic malondialdehyde (MDA) level,superoxide dismutase (SOD) activity,glutathione reductase (GR) concentration and pancreatic β-cell apoptosis were detected in five groups. Re-sults The blood glucose level was significantly increased in IH group than that in CON group (P<0.01), but which was sig-nificantly decreased in IH+TEMPOL+GSH group than that of IH group (P<0.01). The MDA content was significantly higher in the IH group than that in CON group (4.48±0.25 vs 1.94±0.21, P<0.01), but SOD activity and GR content were signifi-cantly lower in IH group than those of CON group (61.52±3.33 vs 100.05± 7.26,107.81±7.54 vs 170.54±4.90,P<0.01). The level of MDA was significantly lower in IH+TEMPOL+GSH group (2.07±0.35) than that in IH group. The levels of SOD and GR were significantly higher in IH+TEMPOL+GSH group (96.68±5.85 and 166.87±5.75) than those of IH group (P<0.01). The apoptotic rate of pancreaticβcells was significantly increased in IH group than that in CON group (2.43±0.07 vs 0.54± 0.06, P<0.01), but it was significantly lower in IH+TEMPOL+GSH group (0.56 ± 0.06) than that in IH group (P<0.01). There were no significantly differences in all above indexes between IH group, IH+TEMPOL group and IH+GSH group ( P>0.05). Conclusion The co-treatment with the antioxidant TEMPOL and GSH can obviously protect IH-induced pancreatic injury in mice. However, there was no significant protective effect of TEMPOL or GSH alone on pancreatic injury.%目的：探讨抗氧化剂氮氧化物4-羟基-2,2,6,6-四甲基哌啶（TEMPOL）和还原型谷胱甘肽（GSH）对间歇低氧（IH）小鼠胰腺损伤的保护作用。方法雄性C57BL/6J小鼠50只按随机数字表法随机均分为正常对照（CON）组、IH组、IH+TEMPOL组、IH+GSH组和IH+TEMPOL+GSH组。成功制备动物模型后，测定各组小鼠胰岛素抵抗（IR）水平，胰腺组织中丙二醛（MDA）、超氧化物歧化酶（SOD）、谷胱甘肽还原酶（GR）的含量及胰腺β细胞的凋亡率。结果 IH组血糖水平高于CON组，IH+TEMPOL+GSH组血糖水平低于IH组（P<0.01）。IH组胰腺组织中MDA（μmol/g蛋白）水平高于CON组（4.48±0.25 vs 1.94±0.21），IH组的SOD（U/mg蛋白）和GR（mg/g蛋白）水平低于CON组（61.52±3.33 vs 100.05±7.26，107.81±7.54 vs 170.54±4.90，P<0.01）；IH+TEMPOL+GSH组MDA水平（2.07±0.35）低于IH组，IH+TEMPOL+GSH组SOD及GR水平（96.68±5.85和166.87±5.75）高于IH组（P<0.01）。IH组较胰腺β细胞凋亡率（%）高于CON组（2.43±0.07 vs 0.54±0.06），IH+TEMPOL+GSH组凋亡率（0.56±0.06）低于IH组（P<0.01）。IH组、IH+TEM-POL组和IH+GSH组与间上述各种指标差异均无统计学意义（均P>0.05）。结论抗氧化剂TEMPOL联合GSH对IH所致小鼠胰腺损伤具有明显的保护作用，而单独应用抗氧化剂TEMPOL或GSH对IH所致胰腺损伤无明显的保护作用。
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