摘要
目的:探讨电针大鼠胃经穴后提取的血清对胃黏膜细胞表皮生长因子受体(epidermal growth factor receptor,EGFR)后信息物质磷脂酶Cγ-1(phospholipase Cγ-1,PLCγ-1)、蛋白激酶C(protein kinase C,PKC)和c-myc表达的影响。方法:60只大鼠随机分为正常组、胃经组、胆经组、胃经+PD153035组和胆经+PD153035组,采用水浸束缚法制作胃黏膜损伤大鼠模型,链霉蛋白酶消化法分离胃黏膜细胞,分别用EGFR抑制剂PD153035和血清孵育胃黏膜细胞,应用酶联免疫吸附法检测PLCγ-1活性,同位素掺入法检测PKC活性,逆转录聚合酶链反应法检测c-myc的表达水平。结果:正常组大鼠胃黏膜细胞PLCγ-1、PKC和c-myc有微弱表达;胃经组和胆经组大鼠胃黏膜细胞PLCγ-1、PKC和c-myc呈现较强表达,其中胃经组大鼠表达最强烈,两组相比,差异有统计学意义(P<0.01);胃经+PD153035组和胆经+PD153035组大鼠胃黏膜细胞PLCγ-1、PKC和c-myc的表达较弱,胃经组与胃经+PD153035组相比,差异有统计学意义(P<0.01)。结论:电针胃经穴后提取的血清能诱导大鼠胃黏膜细胞EGFR后信息物质的活化,提示存在经脉-脏腑的特异性联系。
Objective: To study the effects of serum derived from rats treated with electroacupuncture at stomach meridian acupoints on the expressions of epidermal growth factor receptor (EGFR) signaling substances phospholipase Cγ-1 (PLCγ-1), protein kinase C (PKC) and c-myc in gastric mucosal cells.
Methods: Sixty rats were randomly divided into normal group, stomach meridian group, gallbladder meridian group, stomach meridian plus PD153035 group and gallbladder meridian plus PD153035 group. Waterimmersion and restrained stress methods were adopted for inducing gastric mucosal injury in the rats. Gastric mucosal cells were separated by using pronase digestion method, and incubated by PD153035, a EGFR inhibitor, and 100 ml/L serum. The expression of PLCγ-1 in the gastric mucosal cells was tested by enzyme linked-immunosorbent assay (ELISA), while the expression of PKC by isotope incorporate assay and the expression of c-myc by reverse transcription polymerase chain reaction assay (RT-PCR).
Results: In gastric mucosal cells, weak expressions of PLCγ-1, PKC and c-myc were seen in the normal group, and relatively strong expressions of PLCγ-1, PKC and c-myc were seen in the stomach meridian group and the gallbladder meridian group, among which, the expressions of PLCγ-1, PKC and c-myc in the stomach meridian group were the strongest, and there was a significant difference between the stomach meridian group and the gallbladder meridian group (P〈0.01). Relative weak expressions of PLCγ-1, PKC and c-myc were seen in the stomach meridian plus PD153035 group and the gallbladder meridian plus PD153035 group, and there was a significant difference between the stomach meridian group and the stomach meridian plus PD153035 group ( P〈0.01).
Conclusions: The serum derived from the rats treated with electroacupuncture at stomach meridian acupoints can activate the EGFR singling pathway, and this provides an evidence for the theory of "relative particularity between meridians and viscer
出处
《中西医结合学报》
CAS
2007年第3期338-342,共5页
Journal of Chinese Integrative Medicine
基金
教育部高等学校博士学科点专项科研基金资助项目(No.20050541003)
湖南省教育厅资助项目(No.05C364)