针刺研究2017，Vol.42Issue(6)：482-488,7.DOI:10.13702/j.1000-0607.2017.06.003
电针对糖尿病胃轻瘫大鼠胃窦Cajal间质细胞超微结构及干细胞因子-kit信号途径的影响
Effects of Electroacupuncture on Ultrastructure of Interstitial Cells of Cajal and Stem Cell Factor-kit Signal Pathway of Gastric Antrum in Diabetic Gastroparesis Rats
摘要
Abstract
Objective To observe the effects of electroacupuncture (EA) on gastrointestinal motility and the ultrastructure of interstitial cells of Cajal (ICC) and the expressions of c-kit receptor protein and stem cell factor (SCF) mRNA in diabetic gastroparesis (DGP) rats,so as to explore its mechanism.Methods Fifty SD rats were randomly divided into normal,model,acupoint,non-acupoint and metoclopramide groups (n =10 rats/group).DGP model was established by intraperitoneal injection of streptozotocin (STZ,2％),and raised with high-sugar high-fat diet irregularly.EA (sparse-dense,10 Hz/50 Hz,2 mA,20 min) was applied at "Zusanli" (ST 36),"Liangmen" (ST 21) and "Sanyinjiao" (SP 6),and the corresponding non-acupoints of the 3 acupoints,daily for 15 days.The rats in metoclopramide group received intragastric administration of metoclopramide (1.7％,1 mL/100 g) for 15 days,once a day.Blood sugar was determined with One Touch blood glucose test paper.The gastric emptying rate (GER) and the intestinal propulsion rate (IPR) were measured by intragastric phenol red.The ultrastructure of ICC was detected by transmission electron microscopy.The expression levels of c-kit receptor protein and SCF mRNA of gastric antrum were examined respectively by Western blot and RT-PCR.Results Compared with the normal group,the blood glucose significantly increased in the model group (P＜0.01),while the GER,IRP and the expression level of SCF mRNA in the gastric antrum significantly decreased (P＜0.01),and the ultrastructure of ICC appeared apoptosis-like changes.The blood glucose of the EA group was obviously decreased compared with that of the model group (P ＜ 0.05);the GER and IRP significantly increased(P＜0.05,P＜0.01);the expression level of SCF mRNA increased (P＜0.01),the number of ICC increased and its ultrastructure was repaired.There was some relief on ICC ultrastructure in the acupoint group compared with that in the nonacupoint group;and SCF mRNA increased (P＜0.05).There was no significant difference on c-kit receptor expression among all the modeling groups (P＞0.05).Conclusion EA at ST 36,etc.can regulate the blood glucose and improve gastrointestinal emptying in DGP rats.The mechanism may be related to up-regulating SCF mRNA,repairing ICC ultrastructure,restoring the pacing function,and improving gastrointestinal motility.关键词
电针/糖尿病胃轻瘫/胃肠动力/SCF-kit/Cajal间质细胞Key words
Electroacupuncture/Diabetic gastroparesis/Gastrointestinal motility/SCF-kit/Interstitial cells of Cajal (ICC)分类
医药卫生引用本文复制引用
张程程,林亚平,彭艳,岳增辉,陈海交,杨建文,刘薇薇,刘丽..电针对糖尿病胃轻瘫大鼠胃窦Cajal间质细胞超微结构及干细胞因子-kit信号途径的影响[J].针刺研究,2017,42(6):482-488,7.基金项目
国家自然科学基金项目(No.81403487) （No.81403487）
湖南省教育厅青年基金(No.14 B 128) （No.14 B 128）
