温和灸对寒湿凝滞型原发性痛经大鼠下丘脑BDNF/TrkB信号通路蛋白表达的影响  

Effects of Mild Moxibustion on Proteins Expression of BDNF/TrkB Signaling Pathway in Hypothalamus of Primary Dysmenorrhea Rats with Cold and Dampness Stagnation Syndrome

作　　者：孟祥云 高飞 王迪 梁玉磊 张璇 孙艳秋 邢彦雪 赵志国 李新华 MENG Xiangyun;GAO Fei;WANG Di;LIANG Yulei;ZHANG Xuan;SUN Yanqiu;XING Yanxue;ZHAO Zhiguo;LI Xinhua(Hebei University of Chinese Medicine,Shijiazhuang 050200,China)

机构地区：[1]河北中医药大学,河北石家庄050200

出　　处：《中国中医药信息杂志》2024年第3期127-131,共5页Chinese Journal of Information on Traditional Chinese Medicine

基　　金：国家自然科学基金(82104740);河北省自然科学基金(H2022423368);河北省高等学校科学技术研究项目(ZD2019099)。

摘　　要：目的观察温和灸对寒湿凝滞型原发性痛经(PD)大鼠的镇痛效果及对下丘脑BDNF/TrkB信号通路蛋白表达的影响,探讨其治疗痛经的作用机制。方法将32只Wistar雌性未孕大鼠随机分为空白组、模型组、西药组和温和灸组,每组8只。除空白组外,其余组采用苯甲酸雌二醇腹腔注射联合冰水浴+缩宫素腹腔注射建立寒湿凝滞型PD大鼠模型,造模第8日起,温和灸组选取“神阙”“关元”温和灸10 min,西药组予布洛芬溶液灌胃,连续4 d。观察大鼠扭体潜伏期并计算扭体评分,Western blot和PCR检测下丘脑组织c-fos、脑源性神经营养因子(BDNF)、酪氨酸激酶受体B(TrkB)蛋白及mRNA表达。结果与空白组比较,模型组大鼠扭体潜伏期缩短、扭体评分增加(P<0.01),下丘脑组织c-fos、BDNF、TrkB蛋白和mRNA表达升高(P<0.01,P<0.05);与模型组比较,温和灸组大鼠扭体潜伏期延长、扭体评分降低(P<0.01),下丘脑组织c-fos、BDNF、TrkB蛋白和mRNA表达升高(P<0.01,P<0.05)。结论温和灸可有效改善寒湿凝滞型PD大鼠疼痛状态,其机制可能与下调c-fos表达、抑制BDNF/TrkB信号通路激活,从而抑制疼痛信号传递,调节疼痛发生和维持有关。Objective To observe the analgesic effects of mild moxibustion on primary dysmenorrhea(PD)rats with cold and dampness stagnation syndrome and its effect on BDNF/TrkB signaling pathway in hypothalamus;To explore its mechanism for the treatment of PD.Methods A total of 32 Wistar non-pregnant female rats were randomly divided into blank group,model group,Western medicine group and mild moxibustion group,with 8 rats in each group.Except for the blank group,the other groups received estradiol benzoate intraperitoneal injection combined with ice bath treatment+oxytocin intraperitoneal injection to establish PD with cold and dampness stagnation syndrome model.The mild moxibustion group received treatment at“Shenque”and“Guanyuan”from the eighth day of modeling for 10 min,and the Western medicine group was given ibuprofen solution intragastically for 4 days.The latency period of rats twisting was observed and the twisting score was calculated,Western blot and PCR were used to detect the expressions of c-fos,BDNF,TrkB protein and mRNA in hypothalamic tissue.Results Compared with the blank group,the model group showed a shortened latency period and an increased twisting score(P<0.01),the expressions of c-fos,BDNF,TrkB protein and mRNA in hypothalamic tissue increased(P<0.01,P<0.05).Compared with the model group,the mild moxibustion group had a longer latency period and lower twisting score(P<0.01),while the expressions of c-fos,BDNF,TrkB protein and mRNA in hypothalamic tissue increased(P<0.01,P<0.05).Conclusion Mild moxibustion may effectively improve the pain state of PD rats with cold and dampness stagnation syndrome.This mechanism may be related to downregulating c-fos expression,inhibiting BDNF/TrkB signaling pathway activation,thereby inhibiting pain signal transmission,regulating pain occurrence and maintenance.

关 键 词：原发性痛经 寒湿凝滞型 温和灸 疼痛 c-fos BDNF/TrkB信号通路 大鼠 

分 类 号：R245.8[医药卫生—针灸推拿学]