改良的胃旁路术对GK大鼠非肥胖2型糖尿病的糖代谢影响研究

摘要

Objective To verify the feasibility and effectiveness of modified gastric bypass surgery in the treatment of non-obese type 2 diabetic mellitus(T2DM ) GK rats .Methods Forty male GK rats were randomly divided into four groups (n=10) ,the group A served as the modified gastric bypass ,group B as the Roux-en-Y gastric bypass ,group C as the sham operation and group D as the blank control group .Fasting blood glucose(FBG) ,glycosylated hemoglobin(HbA1c) and fasting serum insulin(FINS) in each group were detected at preoperative 1 week ,postoperative 1 ,2 ,4 ,8 ,12 weeks .Results The rat body mass at postoperative 1 week in the group A and B was significantly decreased compared with the group D ,and began to recover at postoperative 4 weeks , the rat body mass at the same time point had no statistical difference between the group A and B (P>0 .05) .FPG ,FINS and HbA1c at preoperative 1 week had no statistical difference among various groups (P>0 .05) .FPG and FINS at postoperative 1 week had no statistical difference among various groups (P>0 .05) .FPG and FINS at postoperative 2 ,4 ,8 ,12 weeks had no statistical difference between the group A and B(P>0 .05) ,which had no statistical difference between the group A with the group C and D (P>0 .05) . HbA1c at postoperative 4 weeks had no statistical difference among various groups (P>0 .05);which at postoperative 12 weeks had no statistical difference between the group A and B (P>0 .05) ,while which had no statistical difference between the group A with the group C and D(P>0 .05) .Conclusion The modified gastric bypass surgery has the improvement effect on glycometabolism of rat non-obese T2DM ,which is similar to that of Roux-en-Y gastric bypass surgery .%目的 验证改良的胃旁路术治疗GK大鼠非肥胖2型糖尿病的可行性和有效性.方法 将40只雄性GK大鼠分为4组,每组10只.A组为改良的胃旁路组,B组为Roux-en-Y胃旁路组,C组为假手术组,D组为空白对照组.分别检测各组术前1周及术后1、2、4、8、12周空腹血糖(FPG)、糖化血红蛋白(HbA1c)、空腹血清胰岛素(FINS)水平.结果 术后1周A组、B组大鼠体质量较D组明显下降,术后4周开始恢复,相同时间点A组、B组大鼠体质量比较差异无统计学意义(P>0.05).术前1周各组大鼠FPG、FINS、HbA1c比较,差异无统计学意义(P>0.05).术后1周各组大鼠FPG、FINS比较,差异无统计学意义(P>0.05);术后2、4、8、12周A组、B组大鼠FPG、FINS比较差异无统计学意义(P>0.05),而A组与C组、D组比较差异有统计学意义(P<0.05).术后4周各组HbA1c比较差异无统计学意义(P>0.05),术后12周A组、B组比较差异无统计学意义(P>0.05),而A组与C组、D组比较差异有统计学意义(P<0.05).结论 改良的胃旁路术对大鼠非肥胖2型糖尿病的糖代谢具有改善作用,与Roux-en-Y胃旁路术相似.