缪刺电针足三里穴、阳陵泉穴对CCI大鼠背根神经节P2X_3受体表达的影响

目的观察缪刺电针和患侧电针足三里穴、阳陵泉穴对坐骨神经慢性缩窄性损伤(CCI)模型大鼠痛阈和背根神经节P2X3受体表达的影响。方法通过机械刺激法和热辐射法测定大鼠机械缩足反射阈值(MWT)和热缩足反射潜伏期(TWL),采用Western blotting法观察大鼠造模侧L4-L6DRG上P2X3受体蛋白的表达。结果①与假模组比较,CCI术后各组大鼠在各时间点MWT和TWL明显降低(P均<0.001);电针7天后,与模型对照组相比,缪刺电针组和患侧电针组MWT和TWL升高(P均<0.05);缪刺电针组和患侧电针组MWT和TWL差异无统计学意义(P均>0.05);②CCI术后第14天,与假模组相比,各组大鼠P2X3受体蛋白表达上调(P均<0.05),与模型对照组相比,电针能够明显减少P2X3受体蛋白的表达(P均<0.001),缪刺电针组与患侧电针组相比,差异没有显著性(P>0.05)。结论缪刺电针和患侧电针足三里穴、阳陵泉穴,均可下调CCI大鼠DRG神经元中P2X3受体蛋白的表达,减轻CCI大鼠机械性痛觉过敏和热痛觉过敏。

Instant effect of moxibustion at different points on electrogastrogram of patients with functional dyspepsia

Objective： To observe different effects of moxibustion at Zusanli （ST 36） and Yanglingquan （GB 34） on electrogastrogram （EGG） of patients with functional dyspepsia （FD）. Methods： A total of 65 cases were randomized into a Zusanli （ST 36） group （n=33） and a Yanglingquan （GB 34） group （n=32） by random serial number, to receive moxibustion therapy to the corresponding point respectively. The 8-lead EGG was used before and after treatment to collect EGG parameter of the gastric body, antrum of stomach, lesser curvature and greater curvature, including the dominant frequency, slow wave percentage, average frequency, response area and motility index. Results： After treatment, the dominant frequency and slow wave percentage were improved in nearly the whole stomach area in Zusanli （ST 36） group, showing statistical significances （both P〈0.05）; the slow wave percentage and average frequency were improved in stomach body and antrum of stomach in Yanglingquan （GB 34） group, showing statistical significances （both P〈0.05）; moxibustion at Zusanli （ST 36） had a significantly higher influence on EGG than Yanglingquan （GB 34）, in which the lifting of slow wave percentage was significantly higher than Yanglingquan （GB 34） group （P〈0.05）. Conclusion： Moxibustion at Zusanli （ST 36） and Yanglingquan （GB 34） has the effect of adjusting abnormal EGG pattern in FD patients. Compared with Yanglingquan （GB 34）, Zusanli （ST 36） has a superior effect in improving EGG in stomach area.

Effect of electroacupuncture on JAK2/STAT3 pathway in synovial tissues of rats with rheumatoid arthritis

Objective: To observe the effect of electroacupuncture (EA) on Janus kinase 2/signal transducer and activator of transcription 3 (JAK2/STAT3) pathway in knee joint synovial tissues of rats with rheumatoid arthritis (RA) and to explore the action mechanism of EA on RA. Methods: Twelve of the 48 SPF male Sprague-Dawley (SD) rats were assigned to a normal group by the random number table method. The remaining 36 rats were subjected to RA model preparation by intradermal injection of the Freund's complete adjuvant into the right hind foot pad of each rat under sterile conditions. After the model was successfully prepared, rats were then divided into a model group, a drug group and an EA group according to a random number table method (n=12). Rats in the drug group were treated with 2 mL aqueous solution of tripterygium glycosides [8.1 mg/(kg?bw)];rats in the EA group were treated with EA at bilateral Yanglingquan (GB 34) and Zusanli (ST 36), for 30 min each time;rats in the normal group and the model group were placed in a special rat fixation tank for 30 min each time, and received the same dose of normal saline as those in the drug group. Rats in all groups received intervention once a day for 4 weeks. Diameter of rat ankle joint and rat arthritis index were measured before and after the intervention. At the end of the experiment, the expressions of phospho-JAK2 and phospho-STAT3 were determined by immunohistochemistry. Quantitative real-time polymerase chain reaction (RT-qPCR) was used to detect JAK2 and STAT3 mRNAs expressions. Results: After the model was produced, the arthritis index >2 was considered successful in model preparation. Compared with the model group, the ankle joint diameters and arthritis indexes of rats in the drug group and the EA group were significantly lower (all P<0.01);immunohistochemical staining cells with phospho-JAK2 and phospho-STAT3 were significantly decreased (all P<0.01);the expression levels of JAK2 and STAT3 mRNAs were decreased with statistical differences (all P<0.01). There were no significant differences between the EA group and the drug group (all P>0.05). Conclusion: EA can alleviate the inflammatory response of RA rats, improve their pathological conditions, reduce the expressions of phospho-JAK2 and phospho-STAT3 in the synovial tissue of knee joint, and decrease the expressions of JAK2 and STAT3 mRNAs. The therapeutic effect of EA is comparable to that of the tripterygium glycosides. The mechanism of EA treatment may be related to the inactivation of the JAK2/STAT3 pathway.